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    • 专利摘要:
    As part of an air compressor capable of accepting an item for replacement other than an item recommended by the manufacturer to improve safety, an air compressor is provided, by way of example. comprising a compressor body for compressing air, an item to be replaced in detail, for example, a belt for suction (2), a suction filter (5), a separator element (18) and an oil filter ( 3) used during the operation of the compressor body (1), comprising a controller (17) for calculating the service time of the item to be replaced, from an operation time of the compressor body, distinguishing whether the item to be replaced is a manufacturer's recommended item, determine whether the service time of the item to be replaced, which is distinguished as a manufacturer's recommended item, exceeds a preset first reference time, and determine whether the service of the item to be replaced, which is distinguished é as being that which is not the article recommended by the manufacturer, exceeds a second reference time which has been ...
    公开号:BE1018918A3
    申请号:E2009/0110
    申请日:2009-02-25
    公开日:2011-11-08
    发明作者:Kazuhiro Teramoto
    申请人:Hitachi Ind Equipment Sys；
    IPC主号:
    专利说明:

    AIR COMPRESSOR
    Background of the invention
    The present invention relates to an air compressor together with articles to be replaced, which are used during the operation of the compressor body.
    Periodic replacement of items to be replaced (spare parts) is essential for an air compressor to use the air compressor in a safe and efficient condition for an extended period of time. As specific examples of articles to be replaced for an oil-filled air compressor (in detail, oil is dispensed into the working chamber of the air compressor body), the following examples can be provided: a belt for transmitting power between a compressor body and a motor, a suction filter provided in the suction side of the compressor body, to remove impurities from the intake air, lubrication for dispensing into the compressor body, a separator element for removing lubricating oil from the compressed air produced from the compressor body, an oil filter for removing impurities from the lubricating oil, and the like . It is best to replace these items in a manner dependent on replacement interval periods stipulated in a service manual.
    In addition, up to now, it has been proposed a vehicle air conditioner comprising adding and recording means for adding operating times of a compressor, a maintenance interval period setting means for previously set up maintenance periods (for example, cleaning periods or replacement interval periods for a dust filter, packing, seals, pipes, belts and the like) appropriate for parts for which the interviews are necessary, a comparison means for comparing an operating time recorded in the adding and recording means with a maintenance interval period provided from the maintenance period setting means, and a display means displaying the situation when the operating time becomes equal to a maintenance interval period (see, for example, JP-A-8-48133 patent 1)). The conventional technology mentioned above is adapted to improve the maintenance execution speed by displaying the situation as the maintenance interval period ends, so it is possible to reduce breakdowns caused by less maintenance.
    In addition, it has been proposed, for example, a motor-driven heat pump including a timer for counting the engine oil service time (in detail, the additional running time of an engine until the oil is changed), a display control means for controlling a display unit in accordance with a service time of the engine oil, and a function limit means for limiting the operating time of the engine in accordance with engine service delay (see, for example, JP-A-2004-286243 (Patent Document 2)). In this conventional technology, the "check" character is displayed on the display unit when the engine oil service time reaches 9800 hours (in other words, the time at which the engine is running). change of oil for engine is necessary is near), and after that, when the service time of the engine oil reaches 10000 hours (ie, comes to the time at which the engine oil change is necessary), the character "L8" ("late") which indicates an operating condition to limit the function of the engine, together with the character "check", are displayed and the speed of the engine is limited. In other words, although the engine oil change has not yet been realized after the time required to change the engine oil, the operation of the engine according to a prolonged time is performed by the limitation function. engine operation without stopping engine operation to more or less satisfy the user's request.
    In addition, it is possible to allow the user to recognize the time requiring maintenance in view of not only the character "check" but also the function of limiting the operation of the engine.
    The conventional technology mentioned above has caused the following problems. That is, the articles to be replaced include two types, namely, articles recommended by the manufacturer and substitutes (in other words, those other than the articles recommended by the manufacturer), and in general, substitutes possess shorter replacement interval periods compared to the manufacturer's recommended items, although they are inexpensive. In addition, in conventional technology, if the display delay of an expiration of a replacement interval period (or a limitation of the operating function due to the expiration of the replacement interval period) is set on the basis of the replacement period of an item recommended by the manufacturer, this time would be late in the case of the use of a substitute thereof. Thus, there would be a possibility of longer use of the surrogate beyond the replacement interval period inherent to the surrogate. Thus, there is a possibility for improvements in security.
    Summary of the invention
    An object of the present invention is to provide an air compressor capable of accepting items to be replaced, other than items recommended by the manufacturer, to improve the safety thereof.
    For this purpose, according to the first aspect of the present invention, there is provided an air compressor incorporating a compressor body for compressing air, and an article to be replaced, which is used during the operation of the body. compressor, and further comprising service time calculation means for calculating a service time of the article to be replaced, on the basis of an operating time of the compressor body, a distinguishing means for distinguishing if the article to be replaced is an article recommended by the manufacturer or not, a means for determining whether or not the service time of the article to be replaced exceeds a first preset reference time in the case the service time of the article to be replaced which is distinguished as being a manufacturer's recommended item, but determine whether or not the service time exceeds a second reference time previously set to be shorter than the first reference time in the case of the service time of the article to be replaced, which has been distinguished as the one other than the article recommended by the manufacturer, and alarm means for issuing an alarm when the determining means determines that the service time exceeds the associated reference time.
    In the first aspect of the present invention, if, for example, an article to be replaced is not an article recommended by the manufacturer, an alarm is issued based on a reference time (interval period of replacement) that is shorter than that of the manufacturer's recommended article, so that the user can be allowed to recognize an expiration of the replacement interval period. As a result, the use of an article to be replaced can be prevented for an excessively long time, although the article to be replaced is different from that recommended by the manufacturer. It is thus possible to improve security.
    In order to obtain the objects mentioned above, according to a second aspect of the present invention, there is provided an air compressor incorporating a compressor body for compressing air, and an article to be replaced, which is used during operation of the compressor body, and further comprising service time calculating means for calculating a service time of the article to be replaced, based on a running time of the compressor body , a distinguishing means for distinguishing whether the article to be replaced is an article recommended by the manufacturer or not, a means of determining whether or not the service period of the article to be replaced exceeds a first pre-set reference time in the case of the service period of the article to be replaced that is distinguished as the article recommended by the manufacturer, but determine whether or not the service time exceeds a second pre-set reference time to be shorter than the first reference period in the case of the service period of the item to be replaced, which has been distinguished as the one other than the article recommended by the manufacturer, and operation control means for limiting the running time of the compressor or stopping the operation of the compressor body when the determining means determines that the operating time exceeds the associated reference time.
    In the second aspect of the present invention, if the article to be replaced is not an article recommended by the manufacturer, the operating time of the compressor is limited or the operation of the compressor is stopped, based on the delay of reference (replacement interval period) which is shorter than that of the manufacturer's recommended item, so that the user can be allowed to recognize an expiration of the replacement interval period and also to encourage the user to replace the article to be replaced by a new article. As a result, the use of an article to be replaced can be prevented for an excessively long time, although the article to be replaced is different from that recommended by the manufacturer, so that it is possible to improve security.
    In order to obtain the objects mentioned above, according to a third aspect of the present invention, there is provided an air compressor incorporating a compressor body for compressing air and a plurality of articles to be replaced, which are used during the operation of the compressor body, and further comprising service time calculation means for respectively calculating service times of the items to be replaced, based on a period of operation of the body of the compressor. compressor, a distinguishing means for respectively distinguishing whether or not the articles to be replaced are articles recommended by the manufacturer, a determining means multiplying a service period of an article intended to be replaced which is distinguished as being a article recommended by the manufacturer, with a first preset factor, or multiplying a service time of an article intended to be replaced laced which is distinguished as being different from the manufacturer's recommended article, with a second preset factor to be greater than the first factor, and calculating a total time from service times, as parameters, of the plurality of items to be replaced which are multiplied by the factors, to determine whether or not the total delay exceeds a preset reference time, and operation control means to limit the operating time of the compressor or to stop operation of the compressor body if the total delay is determined to exceed the reference time.
    In the third aspect of the present invention, since the total time is calculated from the service times, as parameters, of the plurality of items to be replaced, which are multiplied by the factors greater than those of manufacturer-recommended items, in the case of items to be replaced which are not manufacturer-recommended items, and then that the total time is compared to the reference time, it may be said that the reference time is relatively shorter in the case of an article to be replaced, which is not an article recommended by the manufacturer, than that in the case of an article to be replaced which is an article recommended by the manufacturer. In addition, the operating time of the compressor is limited or the operation of the compressor body is stopped, based on the reference time mentioned above, and accordingly, it is possible to allow the user to recognize a problem. expiration of a maintenance interval period, and prompting the user to replace an item to be replaced with a new item. Thus, in the present invention, although an article to be replaced is not an article recommended by the manufacturer, it is possible to prevent the article to be replaced from being used, for an excessively long time, so that it is possible to improve security.
    According to a fourth aspect of the present invention, there is provided an air compressor as described in the second or third aspect of the present invention, wherein the operation control means preferably reduces a desired value. discharge pressure of the compressor body to limit the operating time of the compressor.
    According to a fifth aspect of the present invention, there is provided an air compressor as described in any of the aspects, from the second to the fourth, of the present invention, preferably further comprising an inverter for controlling in a variable manner the speed of the compressor body, wherein the operation control means reduces the upper limit of the variable speed control range of the compressor body to limit the operating time of the compressor.
    According to a sixth aspect of the present invention, there is provided an air compressor as described in any one of the aspects, second to fifth, of the present invention, wherein if the determining means determines that the reference time is exceeded by an excess value, the operation control means preferably limits the operating time of the compressor on the basis of the excess value.
    According to a seventh aspect of the present invention, there is provided an air compressor as described in any one aspect, from the first to the sixth, of the present invention, wherein the article to be replaced is any of the following items, namely, a belt for transmitting power between the compressor body and a motor, a suction filter provided on the suction side of the compressor body, for removing impurities from the air of the compressor body. intake, a lubricating oil for dispensing into the compressor body, a separator element for separating the lubricating oil from the compressed air produced in the compressor body, and an oil filter for removing impurities from the compressor; lubricating oil.
    According to an eighth aspect of the present invention, there is provided an air compressor as described in any one aspect, from the first to the seventh, of the present invention, wherein the article to be replaced incorporates an integrated circuit chip storing therein identification data and adapted to perform a data processing, and the distinguishing means distinguishes whether or not the article to be replaced is an article recommended by the manufacturer, based on the identification data stored in the integrated circuit chip incorporated in the article to be replaced.
    According to the present invention, it is possible to accept the article to be replaced, which is not an article recommended by the manufacturer, and thus to improve security.
    Brief description of the figures
    Fig. 1 is a schematic view illustrating an example of the configuration of an air compressor to which the present invention is applied; Fig. 2 is a block diagram illustrating a functional configuration of a control device relating to the replacement delay display control according to a first embodiment of the present invention; Fig. 3 is a view showing an example of an adjustment table in the control device of the first embodiment of the present invention; Fig. 4 is a block diagram illustrating a functional configuration of a control device relating to operation control in a second embodiment of the present invention; Fig. 5 is a flowchart for explaining the contents of a method relating to control of operation of the controller in the second embodiment of the present invention; Fig. 6 is a view showing an example of an adjustment table in the controller in the second embodiment of the present invention; Fig. 7 is a view for explaining control operating characteristics of the controller in the second embodiment of the present invention, namely, relationships between a service time and a desired discharge pressure with respect to articles to be replaced, are represented; Fig. 8 is a view for explaining operating control characteristics of the controller in a variant form of the present invention, namely, relationships between a duty cycle and a maximum speed of a compressor body, concerning articles to be replaced, are represented; Fig. 9 is a block diagram illustrating a functional configuration of the control device relating to operation control in a third embodiment of the present invention; Fig. 10 is a flow chart for explaining the contents of a method relating to control of operation of the controller in the third embodiment of the present invention; and Fig. 11 is a view illustrating an example of a control table in the controller in the third embodiment of the present invention.
    Detail of the description and preferred embodiments
    An explanation of a first embodiment of the present invention with reference to Figures 1 and 2 will be provided.
    The configuration of an air compressor, as an example, to which the present invention is applied, is shown in Figure 1 which is a schematic view.
    With reference to FIG. 1, the oil-fed compressor incorporates a compressor body 1 for compressing air, a motor 3 transmitting power through a belt 2, to drive the compressor body. 1, an inverter 4 for controlling the speed of the engine 3, a suction filter 5 provided on the intake side of the compressor body 1, to remove impurities from the intake air, a throttle lever 6 provided on the intake side of the compressor body 1, an oil reservoir 7 provided on the discharge side of the compressor body 1, for first separating the lubricating oil from the compressed air, a separating element 8 for separating secondly the lubricating oil of the compressed air separated in the oil reservoir 7, and an intercooler 11 introducing therein the compressed air separated by the separating element 8, via a valve of regula 9 and a non-return valve 10 for cooling the compressed air.
    The lubricating oil separated by the separating element 8 is distributed to the intake side of the compressor body 1. In the meantime, the separated lubricating oil in the oil reservoir 7 is distributed to components (such as bearings and a working chamber) inside the compressor body 1 via, for example, an oil cooler 12 for cooling the lubricating oil and an oil filter 13 for removing impurities from the oil lubrication. In addition, there is provided a bypass system bypassing the oil cooler 12, and a temperature control valve (three-way valve) 14 for a regular ratio of a flow rate of the lubricating oil flowing to the oil cooler 12. oil cooler 12 and a flow rate of the lubricating oil flowing into the bypass system, arranged in the upstream connection part of the bypass system. The temperature control valve 14 regulates the ratio of the cooled flow rate to the bypass flow rate in accordance with a temperature of the lubricating oil from the oil reservoir 7 to adjust the temperature of the lubricating oil for It is noted that the intermediate cooler 11 and the oil cooler 12 are air-cooled heat exchangers, and are adapted to be cooled by blown-in cooling air. from a cooling fan 15.
    In addition, a pressure sensor 16 for detecting a discharge pressure of the compressor body 1 is provided downstream of the intermediate cooler 11 and the pressure sensor 16 distributes a detection signal to a control device 17.
    The controller 17 calculates, as the first function (operation control), a difference between a detected value of a discharge pressure sensed by and distributed from the pressure sensor 16 and a predetermined desired value which has been set. previously, and distributes a speed instruction signal that has been created based on the deviation, to the inverter 4. The inverter 4 distributes a frequency dependent on the speed instruction signal to the motor 3 in order to control variably the speed of the motor 3 (ie, the speed of the compressor body 1).
    In addition, if, for example, the detected value of the discharge pressure is increased to a predetermined upper limit value which was previously set after the speed of the compressor body 1 is reduced to the limit value. lower the variable control range, the controller 17 closes the throttle lever 6 while maintaining the speed of the compressor body 1 to the lower limit value (operation without load). Further, if, for example, the detected value of the discharge pressure is reduced during unloaded operation, to a predetermined lower limit which has been previously set, the controller 17 opens the throttle lever. intake 6 (operation with load). Further, if, for example, the duration of operation time without load exceeds a predetermined preset time, the controller 17 stops the compressor body 1.
    In addition, the control device 17 is adapted for, as a second function (replacement time display control), to distinguish whether or not a plurality of items to be replaced, mounted on the air compressor. , (in detail, the belt 2, the suction filter 5, the separator element 8 and the oil filter 13) are the articles recommended by the manufacturer, and to calculate their service times on the basis of a duration of operating the compressor body 1 to issue an alarm if the service time of any of the items to be replaced exceeds an associated reference time (replacement interval period). A detailed explanation will be made hereinafter of the replacement time display command mentioned above.
    Fig. 2 is a block diagram showing the functional configuration of the controller 17 regarding the replacement time display control.
    With reference to FIG. 2, the control device 17 comprises a communication unit 18, a service time calculation unit 19, a storage unit 20, a distinction control unit 21, a determination unit 22, a display control unit 23 and a display unit 24.
    The belt 2, the suction filter 5, the separator element 8 and the oil filter 13 incorporate integrated circuit chips 2a, 5a, 8a, 13a, respectively.
    Each of the integrated circuit chips 2a, 5a, 8a, 13a includes a memory storing therein identification data (in detail, indicating, for example, type data such as a belt, a suction filter, a an oil filter, a separator element or the like, a manufacturer's serial number inherent in the associated article, identification data provided by a manufacturer's recommended article and the like), an antenna for wireless data communication, and a control and calculation unit for controlling reading and writing and data communication.
    The communication unit 18 in the control device 17 carries out a wireless communication with the integrated circuit chip 2a of the belt 2, the integrated circuit chip 5a of the suction filter 5, the integrated circuit chip 8a of the separator element 8 and the integrated circuit chip 13a of the suction filter 13 in the air compressor. In detail, it transmits instructions for transmitting identification data to the integrated circuit chips 2a, 5a, 8a, 13a, and, accordingly, receives the identification data transmitted from the integrated circuit chips 2a, 5a, 8a and 13a.
    The service time calculation unit 19 in the control device 17 determines whether the manufacturer's serial number of each of the articles to be replaced, which has been received through the communication unit 18, coincide with the manufacturer's serial number last stored in the storage unit 20. If, for example, it does not coincide with the manufacturer's serial number of the last time (in other words, the article intended to to be replaced has already been replaced), the identification data stored in the storage unit 20 is rewritten in the identification data (in particular, the serial number by the manufacturer) that has been received via of the communication unit 18. In addition, respective operating times of the compressor body 1 are added, on the basis of signals sent to, for example, the inverter 4, and the operating time thus added. is stored as an item service time to be replaced in the storage unit 20 with respect to the identification data (in particular, type of data and the manufacturer's serial number). In the meantime, if, for example, the serial number by the manufacturer coincides with the manufacturer's serial number of the last time (in other words, an article intended to be replaced has not yet been replaced), the service delay calculating unit 19 reads therein the last stored service time stored in the storage unit 20, as the initial value, and adds the operating time of the compressor body 1 to this initial value, and rewrite the time thus summed as service time of an article to be replaced in the storage unit 20.
    The distinction control unit 21 in the control device 17 distinguishes whether or not each of the articles to be replaced is an article recommended by the manufacturer, based on the identification data of the article to be replaced. , which were received through the communication unit 18, and then set a reference time for the article to be replaced with reference to a setting table. Particularly, in view of the data on the adjustment table as shown in Fig. 3, if it is distinguished that, for example, the belt 2 is the article recommended by the manufacturer, the running time is set at 12000 hours, but if it is distinguished that the belt 2 is a substitute (ie, which is not a manufacturer's recommended item), the reference time is set to 10000 hours, which is shorter than the reference time mentioned above. In addition, if it is distinguished that the suction filter 5 is an article recommended by the manufacturer, the reference time is set to 8000 hours, but if it is distinguished that it is a substitute, the reference time is set at 7000 hours, which is shorter than the reference time mentioned above. In addition, in the case of the distinction that the separator element 8 is an article recommended by the manufacturer, the reference time thereof is set to 6000 hours, but in the case of the distinction that it is a substitute , the reference time is set to 5000 hours, which is shorter than the first reference time. Moreover, in the case of the distinction that the oil filter 13 is an article recommended by the manufacturer, the reference time thereof is set at 6000 hours, but in the case of the distinction that it is a substitute , the reference time is set to 4000 hours, which is shorter than the first reference time. It is noted that if, for example, an article to be replaced which does not have an integrated circuit chip is mounted in the air compressor, the discriminator 21 can not receive identification data by through the communication unit 18, and accordingly, it is determined that the article to be replaced is not an article recommended by the manufacturer.
    The determining unit 22 in the controller 17 compares the service time of each item to be replaced, which is calculated by the service time calculation unit 19, to the reference time of each item to be replaced, which is set in the distinction setting unit 21. Then, if, for example, the service time of an article to be replaced exceeds the reference time, the determining unit 22 distributes an instruction of display to the display control unit 23 which displays, for example, a type of the article to be replaced on a display unit (for example, a liquid crystal monitor) together with a message indicating expiration of the replacement interval period, in response to the display instruction.
    In this embodiment which is configured as described above, the controller 17 distinguishes, based on identification data received from an integrated circuit chip of an article to be replaced, if the article to be replaced is an article recommended by the manufacturer or not. Then, it determines whether the service time of the article to be replaced, which is distinguished as a manufacturer's recommended article, exceeds the first preset reference time or not, and determines whether the service time of the article to be replaced, which is distinguished as being that which is not an article recommended by the manufacturer, exceeds the second preset reference time which is shorter than the first reference time, or not. Then, if, for example, it is determined that the service time of the article to be replaced, which is distinguished as the article recommended by the manufacturer, exceeds the first reference time, or if it is determined that the article to be replaced, which is distinguished as being that which is not the article recommended by the manufacturer, exceeds the second reference time, the control device 17 displays the expiration of the interval period replacement of the article to be replaced. Thus, in this embodiment, an alarm is issued in view of the reference time (replacement interval period) depending on whether an item to be replaced is an item recommended by the manufacturer or not to allow the item to be replaced. user to know the expiration of the alternate interval period. Thus, it is possible to prevent an article to be replaced from being used for a longer time, although the article to be replaced is one that is not an article recommended by the manufacturer, and so it is possible to improve security.
    It is noted in the first embodiment mentioned above that, although an explanation has been made of the display unit 24 which displays, for example, a message indicating the expiration of the interval period of replacing, as a means of alarm, the present invention should not be limited thereto, i.e., for example, a buzzer or a lamp may be used, instead thereof. Such an example variant may nevertheless have effects and technical advantages similar to those indicated above.
    An explanation will be made of a second embodiment of the present invention with reference to FIGS. 4 to 7. In this embodiment, if the service time of any one or a plurality of articles for to be replaced exceeds the associated reference time, the running time of the compressor is gradually limited, based on the excess value. It is noted that like reference numerals are used to indicate pieces identical to those explained in the first embodiment in order to shorten their explanation appropriately.
    Fig. 4 is a block diagram showing the functional configuration of a control device with respect to the operation control in the embodiment. Referring to FIG. 4, the control device 25 comprises the communication unit 18, the service delay calculation unit 19, the storage unit 20, a distinction control unit 26, a control unit determination 27 and an operation control unit 28.
    Fig. 5 is a flow chart showing process steps with respect to the operation control of the controller 25. Further, Fig. 6 is a view showing an operating control characteristic of the controller 25, indicating the relationship between the service time of an article to be replaced and a desired value of discharge pressure.
    First, in step 100, the discriminating adjustment unit 26 distinguishes whether or not each of the articles to be replaced (in detail, the belt 2, the suction filter 5, the separator element 8 or the oil filter 13) is an article recommended by the manufacturer, on the basis of identification data of each article, received via the communication unit 18, and sets a reference time Ai and time of excess Bi, Ci, Di (where Ai <Bi <Di), with reference to a setting table that has been stored previously. Particularly, for example, with reference to, for example, an adjustment table as shown in FIG. 7, if the belt 2 is distinguished as being a manufacturer's recommended article, the reference time Al = 12000 hours, the excess time BI = 13000 hours, Cl = 14000 hours, and DI = 15000 hours are set, but if it is distinguished as a substitute, generally shorter times are set, namely, the reference time Al = 10000 hours, and the excess times BI = 11000 hours, Cl = 12000 hours and DI = 13000 hours. In addition, if the suction filter 5 is distinguished as being a manufacturer's recommended article, the reference time A2 = 8000 hours, and excess time B2 = 8500 hours, C2 = 9000 hours and D2 = 9500 hours are set, but if it is distinguished as a substitute, generally shorter times are set, namely, A2 = 7000 hours, periods of excess B2 = 8500 hours, C2 = 8000 hours and D2 = 8500 hours. In addition, if the separator element 8 is distinguished as the article recommended by the manufacturer, the reference time A3 = 6000 hours, the times exceeded B3 6500 hours, C3 = 7000 hours and D3 = 7500 hours are set, but if it is distinguished as a substitute, shorter times are generally set, namely, the reference time A3 = 5000 hours, the excess time B3 = 5800 hours, C3 = 6000 hours and D3 = 6500 hours . In addition, if the oil filter 13 is distinguished as being a manufacturer's recommended article, the reference time A4 = 6000 hours, and the excess times B4 = 6500 hours, C4 = 7000 hours and D4 = 7500 hours. set, but if it is distinguished as a substitute, generally shorter times are set, namely, the reference time A4 = 4000 hours, the excess times B4 = 4250 hours, C4 = 4500 hours and D4 = 4750 hours.
    In addition, in step 101, the service time calculation unit 19 calculates the service times Ti of the articles to be replaced respectively (in detail, the service time T1 of the belt 2, the service time). T2 of the suction filter 5, the operating time T3 of the separator element 8 and the operating time T4 of the oil filter 13) from the operating time of the compressor body 1.
    In addition, in step 102, the determining unit 27 compares the service time Ti of each of the articles to be replaced, calculated by the service time calculation unit 19, to a set reference time Ai. by the discriminating adjustment unit 26 to determine, for example, whether each of the service times Ti of the article to be replaced is longer than the associated reference time Ti or not. If, for example, all the duty times are not longer than the respective reference times A1, the determination in step 102 is satisfied, and step 103 is performed. In step 103, the operation control unit 28 sets a desired value of the discharge pressure to P1 in order to achieve normal operation of the air compressor. Further, a difference between the desired value PI and a detected value of the discharge pressure is calculated, and then a speed instruction signal based on this difference is distributed to the inverter 4. In addition, the values upper and lower limit of the discharge pressure are set on the basis of the desired value PI of the discharge pressure as a reference to open and close the throttle lever 6 in a manner dependent on these values of limit. In the meantime, if, for example, the service time of any one of the article to be replaced exceeds the excess time associated with step 102, the determination mentioned above is not satisfied. and accordingly, step 104 is performed.
    In step 104, the determining unit 27 determines whether the service times Ti of all the items to be replaced are longer than the respective excess times Bi or not. For example, if the service times of all articles to be replaced are not longer than the respective excess times Bi, the determination at step 104 is satisfied, and accordingly, step 105 is performed . In step 105, the operation control unit 28 sets a desired value of the discharge pressure to P2 (where P2 <PI) in order to achieve a limit of the operating time at a first stage. In addition, the difference between the desired pressure P2 of the discharge pressure and a detected value of the discharge pressure is calculated, and a speed instruction signal produced on the basis of the difference is distributed to the inverter. 4. In addition, the upper limit value and the lower limit value of the discharge pressure are set on the basis of the desired value P2 of the discharge pressure as a reference in order to open and close the throttle 6 depending on the upper and lower limit values. In the meantime, if, for example, the service time Ti of any of the articles to be replaced exceeds the associated excess time Bi in step 104, the determination is not satisfied, and accordingly step 106 is performed.
    In step 106, the determining unit 27 determines whether the service times Ti of all articles to be replaced are longer than the respective excess times Ci or not. For example, if the service times of all items to be replaced are not longer than the respective excess times Ci, the determination in step 106 is satisfied, and accordingly, step 107 is performed . In step 107, the operation control unit 28 sets a desired value of the discharge pressure to P3 (where P3 <P2) in order to achieve a limit of the operating time to a second stage. Further, a difference between the desired value P3 of the discharge pressure and a detected value of the discharge pressure is calculated, and a speed instruction signal obtained on the basis of the difference is distributed to the inverter 4. In addition, the upper limit value and the lower limit value of the discharge pressure are set on the basis of the desired value P3 of the discharge pressure as a reference, and the inlet throttle 6 is open and closed based on these limit values. In the meantime, if, for example, the service time Ti of any of the articles to be replaced exceeds the associated excess time B i at step 106, the determination is not satisfied, and accordingly step 108 is performed.
    In step 108, the determining unit 27 determines whether the service times Ti of all articles to be replaced are longer than the respective excess times D1 or not. If, for example, the service times Ti of all articles to be replaced are not longer than the respective times D1, the determination in step 108 is satisfied, and accordingly, step 109 is performed . In step 109, the operation control unit 28 sets a desired value of the discharge pressure to P4 (where P4 <P3) in order to achieve a limit of the operating time to a third stage. Further, a difference between the desired value P4 of the discharge pressure and a detected value of the discharge pressure is calculated, and a speed instruction signal obtained on the basis of this difference is distributed to the inverter 4. Further, the upper limit value and the lower limit value of the discharge pressure are set on the basis of the desired value P4 of the discharge pressure as a reference, and, therefore, the throttle lever. admission 6 is open and closed based on these upper and lower limit values. Meanwhile, if, for example, the service time of any of the articles to be replaced exceeds the associated excess time Di in step 108, the determination is not satisfied, and accordingly, step 110 is performed. In step 110, the operation control unit 28 stops the operation of the compressor body 1.
    In this embodiment configured as described above, the controller 25 determines whether the service time Ti of the article to be replaced, which is distinguished as being a manufacturer's recommended item, exceeds the first reference time preset Ai or not, similarly to the control unit 17 in the first embodiment, but determines whether or not the service time Ti of the article to be replaced, which is distinguished as being that which is not an item recommended by the manufacturer, exceeds the second reference time Ai which has been preset to be shorter than the first reference time. Further, if, for example, it is determined that the service time Ti of any of the articles to be replaced exceeds the associated reference time Ti, the compressor operating time is progressively limited in a manner dependent on the excess value. Thus, in this embodiment, the running time of the compressor is limited based on the reference time (replacement interval period) depending on whether an article to be replaced is an article recommended by the manufacturer or not, to allow the user to know the expiration of the replacement interval period, so it is possible to encourage the user to replace the article to be replaced a new article. Thus, although the article to be replaced is not an article recommended by the manufacturer, it is possible to prevent the article to be replaced from being used for a longer time, and thus it is possible to improve security.
    It is noted that an explanation has been made of, in this second embodiment, the configuration, as an example, in which the controller 25 progressively reduces the desired value of the discharge pressure, i.e. to P2 to P3 to P4, to gradually limit the running time of the compressor. The present invention should not be limited to this configuration. Namely, for example, as shown in FIG. 8, the maximum speed of the compressor body 1 (in other words, the upper limit value of the variable speed control range) controlled by the inverter 4 can to be gradually reduced, namely, NI to N2 to N3 to N4, in order to gradually limit the running time of the compressor. In addition, for example, the desired value of the discharge pressure and the maximum speed of the compressor body can both be progressively reduced so as to progressively limit the operating time of the compressor. Even in these variant embodiments of the embodiment, effects and technical advantages similar to those indicated above can be obtained.
    Furthermore, in the second embodiment, although the configuration has been explained in which if the service time Ti of any of the articles to be replaced exceeds the reference time Ai, the controller 25 gradually limits the operating time of the compressor depending on the excess value, and furthermore if it exceeds the excess time Di, the control device 25 stops the operation of the compressor, the present invention should not be limited to this configuration. Namely, for example, the compressor body itself can be stopped if the service time Ti of any of the articles to be replaced exceeds the associated reference time Ai. Even in this variant form of the embodiment, effects and technical advantages similar to those indicated above can be obtained.
    Further, although no explanation has been particularly provided in the second embodiment, the controller 25 may control the display of the replacement interval period expiration, similarly to the controller 17 in the first embodiment.
    An explanation will be made of a third embodiment of the present invention with reference to FIGS. 9 to 11. In this embodiment, the total time is calculated from the service times of a plurality of articles for to be replaced as parameters, and the operating time of the compressor body is limited if the total time exceeds a reference time. It is noted that, in this embodiment, like reference numerals are used to indicate similar pieces to those explained in the second embodiment or the like to shorten their explanation appropriately.
    Fig. 9 is a block diagram showing a functional configuration relating to the operation control in this embodiment. In FIG. 9, a control device 29 comprises the communication unit 18, the service time calculation unit 19, the storage unit 20, a distinction control unit 30, a total determination unit 31 and the operation control unit 28.
    Fig. 10 is a flow chart showing process steps relating to operation control in this embodiment.
    First, in step 200, the discriminator setting unit 30 discriminates whether items to be replaced (in detail, the belt 2, the suction filter 5, the separator element 8 and the oil filter 13) are articles recommended by the manufacturer or not, based on identification data received via the communication unit 18, and sets weighting factors Ki for the article to be replaced, in reference to an adjustment table that has been stored previously. Particularly, as in an adjustment table shown in Fig. 11, if the belt 2 is distinguished as a manufacturer's recommended article, the weighting factor K1 is set to 0.8, but if it is distinguished as a substitute , the weighting factor K i is set to 2.0, which is greater than the value mentioned above. Furthermore, if the suction filter 5 is distinguished as a manufacturer's recommended article, a weighting factor K2 is set to 0.6, but if it is distinguished as a substitute, the weighting factor K2 is set at 1.0 which is greater than the value mentioned above. In addition, if the separator element 8 distinguished as a manufacturer's recommended article, a weighting factor K3 is set to 0.8, but if it is distinguished as a substitute, the weighting factor K3 is set to 2.0 which is greater than the value mentioned above. In addition, if the oil filter 13 is distinguished as a manufacturer's recommended article, a weighting factor K4 is set to 1.0, but if it is distinguished as a substitute, the weighting factor K4 is set at 3.0, which is greater than the aforesaid value.
    Then, in step 201, the service delay calculation unit 19 calculates the service times Ti of the articles to be replaced (in detail, the service time T1 of the belt 2, the service time T2 of the suction filter 5, the operating time T3 of the separating element 8 and the operating time T4 of the oil filter 13) from the operating time of the compressor body 1.
    Then, in step 202, the total determination unit 31 multiplies the service times Ti of the items to be replaced calculated by the service delay calculation unit 19, respectively, by the weighting factors Ki set by the distinction setting unit 30, and then calculates the total time that is obtained by summing the thus multiplied values. In addition, it determines whether the total time is longer than a preset reference time At or not. For example, if the total time is not longer than the reference time At, the determination in step 202 is true, and accordingly, in step 203, the operation control unit 28 controls the compressor which thus performs a normal operation. In the meantime, if, for example, the total time exceeds the reference time At, the determination in step 202 is false, and accordingly, step 204 is performed.
    In step 204, the total determination unit 31 determines whether the total time is longer than a preset excess time Bt (where Bt> At) or not. If the total time is not longer than the excess time Bt, the determination in step 204 is true, and accordingly, in step 205, the operation control unit 28 controls the compressor in order to achieve a limit of the operating time at a first stage. Meanwhile, if the total time exceeds the excess time Bt, the determination in step 102 is false, and accordingly, step 206 is performed.
    In step 206, the total determination unit 31 determines whether the total time is longer than a preset excess time Ct (where Ct> Bt) or not. If, for example, the total time is not longer than the time of excess
    Ct, the determination in step 206 is true, and accordingly, in step 207, the operation control unit 28 controls the compressor to achieve a second operation time limit. Meanwhile, if the total time exceeds the excess time Ct, the determination at step 206 is false, and accordingly, step 208 is performed.
    In step 208, the total determination unit 31 determines whether the total time is longer than a preset excess time Dt (where Dt> Ct) or not. If, for example, the total time is not longer than the excess time Dt, the determination in step 208 is true, and accordingly, in step 209, the operation control unit 28 controls the compressor to achieve a limit of the operating time at a third stage. Meanwhile, if, for example, the total time exceeds the excess time Dt, the determination in step 208 is false, and accordingly, in step 210, the operation control unit 28 stops operation of the compressor body 1.
    In this embodiment having the configuration as described above, the controller 29 multiplies the service time Ti of the article to be replaced defines as being an item recommended by the manufacturer by the first factor. pre-set weight Ki, and multiplies the duty time Ti of the distinguished replacement article as different from that recommended by the manufacturer by the second preset weight factor Ki which is greater than the first, and calculates the total time (ΣΚΐ * Τϊ ) from the service times of a plurality of items to be replaced that have been multiplied by the weighting factors Ki, as parameters, and determines whether the total time (ΣΚϊ * Τΐ) exceeds the reference time At or not. In addition, if, for example, it is determined that the total time (EKi * Ti) exceeds the reference time At, the running time of the compressor is progressively limited, depending on the excess value. Accordingly, in this embodiment, the operating time of the compressor is limited to time when the total time, which is calculated according to whether each of the articles to be replaced is an article recommended by the manufacturer or not, exceeds the time of reference, and as a result, the user can know the opportunity at which the maintenance time for the compressor has arrived in order to encourage the user to replace an article to be replaced with a new article. Thus, although an article to be replaced is one that is not an article recommended by the manufacturer, it can be prevented from being used for a longer time, and thus it is possible to improve security.
    It is noted in the above-mentioned third embodiment that an explanation has been made of the example in which the service times of articles to be replaced, each multiplied by the weighting factor Ki, are summed to obtain the total time. However, the present invention is not limited to this method. Namely, the calculation can be done in another way, ie, another formula can be used, as long as the service times Ti of the articles to be replaced, each multiplied by the weighting factor, are used. as parameters. Even in this variant form of the embodiment, effects and technical advantages similar to those as described above can be obtained.
    Further, in the third embodiment as described above, although an explanation has not been particularly realized, the controller 29 may also perform the expiration time display command. the replacement interval period.
    In addition, in the first to third embodiments, although an explanation has not been particularly realized, the controller can transmit the service times to the integrated circuit chip to write these. in the integrated circuit chips of the article to be replaced. In this variant form, although, for example, an article to be replaced second-hand is further mounted in the compressor, the controller acquires the past service time stored in the integrated circuit chip of the article to be replaced second-hand, and, accordingly, the controller 17 can calculate the service time in view of the time spent as an initial value.
    In addition, in the first to third embodiments, an explanation has been made of the configuration in which the controller receives identification data stored in the IC chip of the article to be replaced, and distinguishes whether the article to be replaced is an article recommended by the manufacturer or not, on the basis of the identification data received. The present invention should not be limited thereto. That is, the controller can discriminate whether an article to be replaced is an item recommended by the manufacturer or not, based on bar codes, holograms or the like provided to the item to be replaced. and read by a reader. In addition, with respect to an article to be replaced on which an integrated circuit chip, bar codes or the like can not be directly applied (eg, lubricating oil), integrated circuit chip or the bar codes may be applied to, for example, an accessory of the article to be replaced (for example, a container in which the lubricating oil is reserved). In addition, for example, the controller can discriminate whether an article to be replaced is an item recommended by the manufacturer or not, based on data entered from a keyboard. Even in these alternative examples, effects and technical advantages similar to those as described above can be obtained.
    It is noted that, as indicated above, an explanation has been made, as an example, of the oil-fed air compressor in which the speed of the compressor body is variably controlled, as subject to which the present invention is applied. The present invention should not be limited to this air compressor. Namely, the present invention can be applied to an air compressor that is operated while the speed of a compressor body is fixed. In addition, the present invention can also be applied to, for example, an oil-free air compressor. Even in these variant forms, effects and technical advantages similar to those as described above can be obtained.
    The person skilled in the art must furthermore understand that, although the foregoing description has been made on embodiments of the invention, the invention is not limited thereto and various changes and modifications may be made without to depart from the spirit of the invention and the scope of the appended claims.
    权利要求:
    Claims (15)
    [1]
    An air compressor comprising a compressor body (1) for compressing air, and an article to be replaced (2, 5, 8, 13) used during operation of the compressor body (1), said compressor comprising: service time calculating means (19) for calculating a service time (Ti) of the article to be replaced, based on an operating time of the compressor body (1), distinguishing means (21, 26, 30) for discriminating whether the article to be replaced (2, 5, 8, 13) is an article recommended by the manufacturer or not, a means of determining (22, 27, 31 ) to determine whether or not the service life (Ti) of the article to be replaced (2, 5, 8, 13), which has been distinguished as the article recommended by the manufacturer, is not longer than a first reference time (Ai), and determining whether or not the service time (Ti) of the article to be replaced (2, 5, 8, 13), which has been distinguished as being that which is not the manufacturer's recommended article, is not longer than a second reference time (Ai) which has been preset to be shorter than the first time reference means (Ai), and alarm means for issuing an alarm when the determining means (22, 27, 31) determines that the reference time (Ai) is exceeded.
    [2]
    An air compressor comprising a compressor body (1) for compressing air, and an article to be replaced (2, 5, 8, 13) used during operation of the compressor body (1), said compressor comprising: service time calculating means (19) for calculating a service time (Ti) of the article to be replaced (2, 5, 8, 13), based on a duration of operation of the compressor body (1), a distinguishing means (21, 26, 30) for distinguishing whether the article to be replaced (2, 5, 8, 13) is an article recommended by the manufacturer or not, a determining means (22, 27, 31) for determining whether or not the service time (Ti) of the article to be replaced (2, 5, 8, 13), which has been distinguished as the article recommended by the manufacturer, is not longer than a first reference time (Ai), and determine whether or not the service period (Ti) of the article to be replaced (2, 5, 8, 13), which has been distinguished as being that which is not the article recommended by the manufacturer, is not longer than a second reference time (Ai) which has been preset to be shorter than the first reference time (Ai), and operation control means (28) to limit the running time of the compressor or stop the compressor if the determining means (22, 27, 31 ) determines that the reference time (Ai) is exceeded.
    [3]
    An air compressor comprising a compressor body (1) for compressing air, and a plurality of articles for replacement (2, 5, 8, 13) used during operation of the compressor body ( 1), said compressor comprising: service time calculation means (19) for calculating service times (Ai) of articles to be replaced (2, 5, 8, 13), based on a time of operation of the compressor body, a distinguishing means (21, 26, 30) for distinguishing whether or not the articles to be replaced (2, 5, 8, 13) are manufacturer's recommended articles, respectively, a means for determining (22, 27, 31) multiplying service times (Ai) of articles to be replaced (2, 5, 8, 13), which have been distinguished as the articles recommended by the manufacturer, by a first factor preset (Ki), and multiplying the service times (Ai) of items to be replaced és (2, 5, 8, 13), which have been distinguished as being those which are not items to be replaced, by a second factor (Ki) which has been preset to be greater than the first factor (Ki ), and calculating a total time (EKi * Ti) from the service times (Ti) of the plurality of articles to be replaced (2, 5, 8, 13), which are multiplied by these factors (Ki) , as parameters, to determine whether or not the total time (SKi * Ti) exceeds a preset reference time (At), and operation control means (28) to limit the compressor run time or stop the compressor if the determining means (22, 27, 31) determines that the reference time (At) is exceeded.
    [4]
    An air compressor according to claim 2, wherein said operating control means (28) reduces a desired value of the discharge pressure (P4) of the compressor body (1) to limit the operating time of the compressor. .
    [5]
    An air compressor according to claim 3, wherein said operating control means (28) reduces a desired value of the discharge pressure (P4) of the compressor body (1) to limit the operating time of the compressor .
    [6]
    An air compressor according to claim 2, further comprising an inverter (4) for variably controlling the speed of the compressor body (1), wherein said operating control means (28) reduces the upper limit value of a variable speed control range of the compressor body (1) in order to limit the operating time of the compressor.
    [7]
    The air compressor according to claim 3, further comprising an inverter (4) for variably controlling the speed of the compressor body (1), wherein said operating control means (28) reduces the limit value greater than a variable speed control range of the compressor body (1) to limit the operating time of the compressor.
    [8]
    An air compressor according to claim 2, wherein said operating control means (28) limits, when the determining means (21, 27, 31) determines that the reference time (Δt) is exceeded, the duration compressor operation progressively on the basis of the excess value.
    [9]
    An air compressor according to claim 3, wherein said operating control means (28) limits, when the determining means (21, 27, 31) determines that the reference time (Δt) is exceeded, the duration compressor operation progressively on the basis of the excess value.
    [10]
    An air compressor according to claim 1, wherein said article to be replaced (2, 5, 8, 13) has an integrated circuit chip (2a, 5a, 8a, 13a) for storing therein identifying data and for processing data, and said distinguishing means (21, 26, 30) distinguishes whether or not the article to be replaced (2, 5, 8, 13) is a manufacturer's recommended article, based on identification data stored in the integrated circuit chip (2a, 5a, 8a, 13a) of the article to be replaced (2, 5, 8, 13).
    [11]
    An air compressor according to claim 2, wherein said article to be replaced (2, 5, 8, 13) has an integrated circuit chip (2a, 5a, 8a, 13a) for storing therein identification data and for processing data, and said distinguishing means (21, 26, 30) distinguishes whether or not the article to be replaced (2, 5, 8, 13) is an article recommended by the manufacturer on the basis of identification data stored in the integrated circuit chip (2a, 5a, 8a, 13a) of the article to be replaced (2, 5, 8, 13).
    [12]
    The air compressor according to claim 3, wherein said article to be replaced (2, 5, 8, 13) has an integrated circuit chip (2a, 5a, 8a, 13a) for storing therein identification data and for processing data, and said distinguishing means (21, 26, 30) distinguishes whether or not the article to be replaced (2, 5, 8, 13) is an article recommended by the manufacturer on the basis of identification data stored in the integrated circuit chip (2a, 5a, 8a, 13a) of the article to be replaced (2, 5, 8, 13).
    [13]
    An air compressor according to claim 1, wherein said article to be replaced (2, 5, 8, 13) is any one of a belt (2) for transmitting power between the compressor body ( 1) and a motor (3), a suction filter (5) provided on the suction side of the compressor body (1), for removing impurities from the intake lubricating oil distributed in the compressor body (1). ), a separating element (8) for separating the lubricating oil from the compressed air discharged from the compressor body (1), and an oil filter (13) for removing impurities from the lubricating oil.
    [14]
    An air compressor according to claim 2, wherein said article to be replaced (2, 5, 8, 13) is any one of a belt (2) for transmitting power between the compressor body ( 1) and a motor (3), a suction filter (5) provided on the suction side of the compressor body (1), to remove impurities from the intake air, the lubricating oil distributed in the body compressor (1), a separating element (8) for separating the lubricating oil from the compressed air discharged from the compressor body (1), and an oil filter (13) for removing impurities from the lubricating oil.
    [15]
    The air compressor according to claim 3, wherein said article to be replaced (2, 5, 8, 13) is any one of a belt (2) for transmitting power between the compressor body ( 1) and a motor (3), a suction filter (5) provided on the suction side of the compressor body (1), to remove impurities from the intake air, the lubricating oil distributed in the body compressor (1), a separating element (8) for separating the lubricating oil from the compressed air discharged from the compressor body (1), and an oil filter (13) for removing impurities from the lubricating oil.
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    CN101660518A|2010-03-03|
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    US20120143379A1|2012-06-07|
    JP2010053791A|2010-03-11|
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