• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An air handling unit (10) comprising a first air channel (12) for cooling air comprising an air inlet (16) and an air outlet (18), a second air channel (14) for heated air comprising an air inlet (20) and an air outlet (22); a heat recovery system (24) arranged in connection with the first (12) and the second air duct (14) in an area between these inlets and outlets arranged to transfer heat between the heated and cooled air flow flowing in the air ducts (12,14); The heat pump assembly (26) comprises a first heat exchanger unit (28) arranged to cool the air flowing in the first air duct (12), and the first heat exchanger unit (26) disposed in the air flow direction 12) flowing air, wherein the second heat transfer unit (30) is arranged in connection with the first air channel (12) in the direction of air flow before the heat recovery system (24). The invention also relates to a method for operating an air handling unit and a method for upgrading an air handling unit.
    公开号:FI20185475A1
    申请号:FI20185475
    申请日:2018-05-23
    公开日:2019-11-24
    发明作者:Rainer Mannersuo
    申请人:At Air Oy；
    IPC主号:
    专利说明:

    The invention relates to an air treatment unit according to the preamble of claim 1, comprising a first air duct for chilled air, comprising an air inlet and an air outlet for the air, and a second air duct for heating the air inlet and air outlet. a heat recovery system arranged in connection with the first and second air ducts arranged in the area between these inlets and outlets to transfer heat between the heated and cooled air streams in the air ducts and the heat pump assembly.
    The invention also relates to a method for operating an air handling unit and a method for upgrading an air handling unit.
    A ventilation unit comprising an exhaust duct and an inlet duct is known from the prior art, in which heat is exchanged in the exhaust air duct and in the supply air duct through the heat exchanger. In cold conditions, there is a risk of condensation and freezing of the exhaust air humidity in the heat exchanger or in the ventilation unit in general. The risk of freezing increases as the outdoor temperature decreases and the efficiency of the ventilation unit pa20 decreases. It is known to improve the efficiency of a ventilation machine by adapting it to a ventilation unit. with an exhaust heat pump where heat is transferred from the exhaust air to the supply air. This may increase the risk of freezing.
    EP 2783165 B1 discloses a ventilation unit for controlling indoor air in a building. The system comprises a first air duct for supplying air from the outdoor space to the unit for air treatment and for further supplying the treated air to the indoor air space of the building. The first air duct is equipped with a fan. The system also comprises a second air duct for supplying exhaust air from the interior to the unit for treating exhaust air and for further treated waste air to the exterior of the building. The other air duct is equipped with a fan. The system comprises 30 regenerative exhaust air supply air heat exchangers arranged in connection with the first and second air ducts to transfer heat between the exhaust air and the supply air. The system also includes water-to-air heat exchangers in both the first air duct and the second air duct, which are optionally connected to the system's cold water or hot water circuits. A water-to-air heat exchanger in a second, i.e. exhaust air duct
    20180523 2
    20185475 prh 23 -05-2018 is located downstream of the exhaust air supply air heat exchanger. The system further includes a heat pump arranged to transfer heat between the cold water and hot water circuits. According to the publication, in order to prevent the freezing of the equipment, the regenerative exhaust air supply air heat exchanger is rotated at a lower speed, whereby the exhaust air does not transfer heat normally to the supply air and the freezing of the exhaust air is prevented.
    WO2017217904 Ä1 air conditioning unit utilizing a heat pump. Here, the use of a heat pump system to reverse the freezing of heat recovery is disclosed.
    The above-mentioned solutions have the problem of e.g. the fact that preventing the heat recovery system from freezing causes a reduction in heat recovery efficiency.
    The object of the invention is to improve the state of the art by providing an air handling unit which minimizes the problems of the prior art.
    The objectives of the invention are mainly achieved by the more detailed disclosure of the independent claim and other claims. Other additional features of the invention will be apparent from the appended claims and from the following description of embodiments of the figures.
    Advantages of the invention are e.g. it provides a more efficient, more efficient anti-freeze in the heat recovery system, and the efficiency of the apparatus and method.
    The air handling unit of the invention comprises a first air duct for cooling air, comprising an air inlet and an air outlet, a second air duct for heated air, comprising an air inlet 25 and an air outlet, and a heat recovery system arranged in between the heated and cooled air, and the heat pump assembly. The heat pump assembly comprises a first heat exchanger unit arranged to cool the air in the first air duct and is arranged in connection with the first air duct after the heat recovery system, and
    20180523 2
    Preferably, the heat pump assembly comprises a heat pump, and the first heat exchange unit is a heat pump evaporator, and the heat pump assembly comprises a heat accumulator arranged to heat the heat pump, and the heat accumulator is connected to the second heat exchanger.
    The heat pump assembly comprises a heat pump, and the first heat exchanger unit of the heat pump assembly is a heat pump evaporator and the second heat exchanger unit is a condenser of the heat pump assembly.
    The heat pump assembly comprises a third heat exchanger unit connected to a heat transfer connection with the heat accumulator.
    The second heat exchanger unit and the third heat exchanger unit are connected to the hot water heater by ducts so that they are connected in parallel with one another.
    The use of an air handling unit involves a method of operating an air handling unit, the air handling unit comprising a first air duct for cooling air, comprising an air inlet and an air outlet, a second air duct for heated air, including an air inlet and outlet an area arranged to transfer heat in the air passages between the heated and cooled 20 air streams of filings, and a heat pump assembly, the method of supplying cooled air through a first air duct and passing heated air through a second air duct. In the method, the heat pump assembly transfers heat from the air to be cooled in the first air duct, 25 downstream of the heat recovery system, and returns heat to the air to be cooled in the first air duct through the heat pump assembly at a point prior to the heat sink.
    [0016] In a preferred embodiment of the invention, heat is transferred from filing until the first air passage from the air into the heat pump unit työai30 pressure so that the working fluid is vaporized in the first air conduit arranged in the first of heat exchange and introduced into the second of heat exchange in heat pump by means of heat from the first air duct filing, but the air magic appropriate so that the working fluid is condensed in the first air channel arranged in the second heat transfer unit .
    According to a preferred embodiment of the invention, heat is optionally transferred from the heat sink to the air in the second air duct, downstream of the heat recovery system, and to the air flowing in the first air duct, prior to the heat recovery system.
    In a method according to an embodiment of the invention, for upgrading an existing air treatment unit, the existing air treatment unit comprising a first air duct for cooling air, comprising an air inlet and an air outlet, a second air duct for heated air, a first air outlet and a in an area between these inlets and outlets arranged to transfer heat between the heated and cooled air in the air ducts, and the still existing air treatment unit comprising a post-heating device in connection with the second air duct, the method the evaporator of the unit after the heat recovery system in the air flow direction, and further by installing a condenser of the heat pump unit in the first air channel of the air handling unit before the heat recovery system in the direction of air flow.
    According to one embodiment of the invention, the reform comprises installing a temperature transmitter or meter in connection with the second air duct, in the air flow direction before the reheater to measure the air temperature in the air duct, and configuring the heat pump assembly to maintain the dehumidifying temperature in the second air duct.
    BRIEF DESCRIPTION OF THE DRAWINGS In the following, the invention and its operation will be described with reference to the accompanying schematic drawings in which: ilmankäsittelykoneikosta,
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    20185475 prh 23 -05-2018 Fig. 4 is a flow chart illustrating a method for controlling the temperature of a heat accumulator, and Fig. 5 is a schematic representation of another embodiment of a machine assembly according to the invention.
    Fig. 1 schematically shows a reduced embodiment of the air treatment unit 10 according to the invention, showing only the essential elements of the air treatment unit according to the invention, which achieve the desired technical effect in the simplest form. The figure shows an air-conditioning unit 10 comprising a first air duct 12 for air to be cooled. Such a duct can also be called an exhaust air duct. Under the conditions where the effect of the invention can be achieved, moist air is flowing in the first air duct, and in most cases this is exhaust air from the room to be ventilated; naturally, there is no significant risk of freezing in completely or very dry air. The first air duct comprises an air inlet 16 through which air to be cooled is arranged to flow to a first air duct and an air outlet 18 through which air to be cooled is arranged to flow out of the first air duct after air treatment. The air treatment unit 10 further comprises a second air duct 14 for heated air. Such a channel can also be called a supply air20 lying channel. In most cases, when the effect of the invention is realized, the air to be cooled is exhaust air and the air to be heated is supply air. The second air duct 14 also comprises an air inlet 20 through which heated air is arranged to flow to a second air duct 14 for air treatment and an air outlet 22 through which the heated air is arranged to flow out of the second air duct 14 after air treatment.
    The air handling unit 10 further comprises a heat recovery system arranged in connection with the first 12 and the second air ducts 14 in the area between these inlets 16, 20 and the outlets 18,22 arranged to transfer heat between the heated and cooled air flows in the air ducts. In practice, a heat recovery system can be implemented in many ways by means of a heat exchanger or heat exchangers. According to a preferred embodiment of the invention, the heat recovery system 24 is so-called. plate heat exchanger consisting of parallel20180523 2
    20185475 prh 23 from -05 to 2018 from disposed discs spaced relative to each other and forming flow paths for heated and cooled airflow, one for heated and every other for cooled airflow.
    According to another preferred embodiment of the invention, the heat recovery system 24 is so-called. regenerative rotary heat exchanger (not shown).
    The heat recovery system can also be implemented by an indirect heat recovery system having first heat duct 12 and second air duct 14 having separate heat exchangers, wherein the heat exchangers are interconnected by a separate heat transfer medium circuit shown in Fig. 2. , with the help of the heat recovery system 24, these are in heat transfer communication with each other.
    The air handling unit 10 comprises, as an integral part, a heat pump assembly 26 arranged to transfer heat in the first air duct 12 from the filing air so that it receives heat from the air at a point downstream of the heat recovery system 24 and discharges heat into the air. before the heat recovery system 24. The heat pump assembly 26 is provided in heat transfer communication with the first air duct 12 at two different points in the air duct, whereby the heat recovery system 20 24 is coupled between these points. The heat pump assembly 26 comprises a first heat exchanger unit 28 arranged to cool the filing air in the first air duct 12 and fitted in contact with the first air duct downstream of the heat recovery system 24. The heat pump assembly 24 further comprises a second heat exchanger unit 30 arranged to heat filing air 12 in the first air channel 12 and arranged in connection with the first air channel prior to the heat recovery system 24. The heat pump assembly 26 thus transfers heat from the This provides that the temperature of the air entering the heat recovery system via the first air duct 30 can be raised sufficiently high on a case-by-case basis to minimize the risk of freezing in the heat recovery system 24. This can be accomplished without interfering with the air flow through the second air duct 14, whereby the pressure conditions of the space to be ventilated are not altered as a result of keeping the heat recovery system melted. The heat pump assembly 26 may be arranged in a heat transfer connection with the first air duct 12 with the filing air
    20180523 2
    20185475 prh 23 -05-2018 with different but known arrangements. The heat pump assembly 26 comprises a heat pump, the main components of which are known to be a vaporizer, a compressor, a condenser and an expansion valve / throttle, for transferring heat from a lower temperature to a higher temperature by a suitable working fluid. Both the heat pump vaporizer and the condenser, one or both, may be directly or indirectly connected to the first air duct of the air treatment unit 10. Figures 1 and 2 thus show a basic idea according to an embodiment of the invention. Both the first and second air ducts are provided with a suitable fan 32,34 to provide air flow. Each fan is provided downstream of the heat recovery system 24.
    An example of the operation of an air handling unit is shown below. When the temperature of the supply air (air flowing in the second air channel 14) drops below a case-by-case first cut-off temperature, for example +2 ° C, the water vapor contained in the exhaust air may condense on the cold surfaces 15 of the heat recovery system. If the supply air temperature continues to fall below a case-by-case second cut-off temperature, for example 0 ° C, the condensed water begins to freeze in the heat recovery system 24. Ice formation is detectable or identifiable by temperature measurement or pressure difference in the first air channel 12 between its fan and heat recovery system. Freezing can be prevented or at least 20 minimized by transferring heat from the exhaust air to the pump unit working fluid (directly or indirectly) downstream of the heat recovery system 24, thereby introducing the dehumidified heat back into the exhaust air prior to the heat recovery system 24. This causes the exhaust air to cool.
    Fig. 3 shows an air treatment unit 10 according to a preferred embodiment of the invention, in which utilization of the heat pump unit 26 has been taken further than in the embodiment of Figs. 1 and 2. The air handling unit 10 shown in Figure 3 comprises components similar to the embodiment shown in Figure 1, as well as some features that further improve the operation of the air handling unit. The air handling unit 10 shown in Figure 3 also comprises a first air duct 12 for cooled air and a second air duct 14 for heated air. The first air duct comprises an air inlet 16 through which air to be cooled is arranged to flow into the first air duct. Typically, outdoor air is drawn into the unit through the inlet. The first air channel 14 also comprises an air outlet20180523 2
    20185475 prh 23 -05-2018, through which the air to be cooled is arranged to flow out of the first air duct after air treatment. The air outlet may be connected, for example, to a separate supply air duct (not shown) through which the supply air is led to the premises to be ventilated. In the embodiment of FIG. when the unit is in operation, a heat recovery system 24, a supply air fan 34, and a third heat exchanger unit 46 of the heat pump unit 24 fitted after the air inlet 20 10.
    The heat pump assembly 26 comprises a first heat exchanger unit 28 in a first air duct 12 after a heat recovery system 24 and a second heat exchanger unit 30 in a first air duct 24 prior to a heat recovery system 15, as previously described with respect to the to the second air channel downstream of the heat recovery system 24. In the embodiment of Fig. 3, the heat pump assembly 26 comprises a heat pump 44. The heat pump comprises a vaporizer 20, which in this embodiment is the first heat exchanger unit 28 of the heat pump assembly 26, thereby transferring heat directly from the exhaust air to the working fluid 44 of the heat pump 44. To raise the working fluid pressure above the evaporation pressure, the heat pump 44 is provided with a compressor 42. The heat pump condenser 40 is fitted to a heat pump 48 of the heat pump 25. The heat pump also comprises an expansion valve 50 where the working fluid expands to a lower pressure. The operating principle of a heat pump is well known to those skilled in the art and is therefore not described in further detail herein. The evaporator 28 of the heat pump 44 is fitted to the air treatment unit 10 in the first air duct 12 after the heat recovery system 24 and the heat pump 44 transfers heat from the exhaust air flowing through the first air duct to the heater. Preferably, the heat accumulator comprises a thermally insulated container containing an aqueous heat transfer medium such as a water-antifreeze mixture. This may be, for example, a water-glycol mixture. Since the heat accumulator is advantageously based on the use of water and its heat storage capacity, it can be referred to hereinafter as the hot water accumulator 48. The hot water accumulator 48 is
    20180523 2
    20185475 prh 23 -05-2018 connected to the flow connection with both the second heat exchanger unit 30 and the third heat exchanger unit 46. Of these, the second heat exchanger unit 30 arranged to heat filing air in the first air duct 12 in its downstream direction prior to the heat recovery system 24. The power of the second heat exchanger unit 30 can be advantageously controlled by adjusting the temperature of the heat transfer medium to the heat exchanger unit.
    The third heat exchanger unit 46, in turn, is arranged in connection with the second air duct to heat filing air (supply air) in the second air duct 14 downstream of the heat recovery system 24. In this way, the supply air temperature can be increased by the heat transfer unit 46 of the col10 mannequin from where the heat recovery system 24 has first been able to raise it. The third heat exchanger unit can thus also be called a post-heating heat exchanger. The second heat exchanger unit 30 and the third heat exchanger unit 46 are connected to the hot water heater 48 by ducting 52 so that their heat transfer power to the air 15 can be independently controlled using the heat stored in the hot water heater 48. This is implemented in Figure 3 with the second heat exchanger unit 30 and the third heat exchanger unit 46 connected in parallel to the duct system 52.
    The operation of the air treatment unit according to the invention and the method which can be carried out therein are described in more detail below.
    When the air handling unit is operational, air flows through its first 12 and second air ducts 14, cooling air in the first air duct 12 (exhaust air) and heating air in the second air duct 14 (supply air) by means of a heat recovery system 24. In a heat recovery system, heat is transferred from the exhaust air to the supply air. In the embodiment of Figure 3, the temperature of the heat accumulator 48 is maintained at a desired level by supplying heat to the accumulator through the first air duct 12 from the filing air. This is done by the heat pump 44. In the method, the temperature of the heat accumulator 48 is preferably maintained at 40-50 ° C. The temperature level is kept only high enough to allow the desired operation of the second and third heat exchanger units, excessively high temperature 30 is known to reduce the heat coefficient of the heat pump.
    A method for controlling the temperature of the heat accumulator 48, which constitutes a subprocess of the assembly according to the invention, is illustrated as a flow chart in Figure 4. The method determines a lower limit and an upper limit for the temperature of the heat
    20180523 2
    20185475 prh 23 -05-2018 in I. Heat accumulator 48 is provided with at least one temperature transmitter and in processing step II, the temperature of the accumulator is measured by means of temperature transmitter 54. Next, the method includes a decision step III comparing the temperature measured from the heat reservoir with the determined lower temperature limit of the heat reservoir, in particular whether the measured temperature is lower than the lower temperature limit. If the measured temperature is not lower than the lower temperature limit, return to treatment stage II. If the measured temperature is lower than the lower temperature limit, the treatment step IV is taken, in which the heat pump 44, in particular its compressor 42, is started or, if it is running, the operating state is maintained.
    With the heat pump 44 running, heat from the exhaust air is transferred to the hot water reservoir10. 48. Next, the method comprises a decision step V comparing the temperature measured from the heat reservoir with the determined upper temperature limit of the heat reservoir, in particular whether the measured temperature is higher or equal. If the measured temperature is not greater than or equal to the upper limit of temperature, return to treatment step IV. If the measured temperature is greater than or equal to the upper limit of the temperature 15, the processing step VI is carried out, in which the heat pump 44, in particular its compressor 42, is stopped. After this, we go back to processing step I.
    The operation of the heat pump 44 is thus controlled based on the temperature measured from the heat reservoir. The heat pump may be controlled either by on / off control, or the heat pump drive motor may be speed controlled so that its power is substantially infinitely variable and thus even continuously running. The heat generated from the exhaust air in this manner is available through the accumulator 48 in the second 30 and the third heat exchanger unit 46.
    In a situation where the risk of freezing of the heat recovery system 24 is increased or ice formation has begun, the second heat transfer unit 30 of the heat pump assembly 26 is activated to operate. The second heat exchanger unit can be considered passive in situations where there is no risk of freezing. This is the case, for example, as when the temperature of the air entering the heat recovery system 24 via the second air channel 14 is greater than 0 ° C.
    In a situation where the risk of freezing of the heat recovery system 24 has increased or ice formation has begun, the second heat transfer unit 30 of the heat pump assembly 26 is controlled to transfer heat in the first air duct 12 to the filing air, with heat transfer through the heat transfer unit. Since said second heat exchanger unit is in the air flow direction prior to the heat recovery system 24, air enters the heat recovery system
    20180523 2
    20185475 prh 23 -05-2018, respectively, and thus the temperature of the air leaving the heat recovery system 24 is higher and also the temperature of the heat transfer surfaces of the heat recovery system 24 is higher than in a situation where no heat is transferred from the second heat transfer unit 30. In this way, the temperature level of the heat recovery system 24 can be changed by adjusting the power of the second heat exchanger unit 30 so as to minimize or eliminate the risk of freezing.
    The heating power of the third heat exchanger unit 46 is adjusted such that the air temperature at outlet 22 is at a desired level. A third heat exchanger unit 46 is arranged to transfer heat from the hot water heater 48 to the supply air prior to outlet 10 opening 22. The heat available from the hot water heater is used primarily to heat the air The heat recovered from the exhaust air in this way is available for both after-heating of the air (third heat exchanger unit 46) and for keeping the heat recovery system defrosted (second heat exchanger unit 30).
    The embodiment of Figure 3 illustrates how, according to one embodiment of the invention, the first air duct 12 has an air humidifier 39 in an air flow direction before a second heat exchanger unit 30. Its purpose is to introduce additional moisture into the exhaust air before the air is supplied to the second heat exchanger unit 30. is preferably configured to introduce liquid water into the air, whereby the heat of evaporation of water is introduced into the process by means of another heat exchanger unit 30. When the humidifier is in operation, the heat transferred by the second heat exchange unit is stored in the water vapor contained in both air and air. Some of the heat is also used to evaporate the water. In the heat recovery system 24, the water vapor condenses, whereupon the heat released keeps the heat recovery system 24 molten and which heat is also transferred through the heat recovery system 24 to the supply air in the second air duct 14.
    When a certain power is thus transferred to the humid air, only part of the power 30 is used to raise the temperature of the air, and part of the latent heat is bound to the water vapor, the heat transferred to the heat recovery system 24 can be transmitted at lower temperatures. This reduces the heat loss of the unit. At the same time, the water condensing on the surfaces of the heat recovery system 24 also serves as a surface cleaning agent.
    20180523 2
    The control unit comprises a computer or other storage medium comprising commands which, when executed by the computer, causes the computer to implement the method of controlling the temperature of the heat storage medium 48 according to the invention. The computer or other storage medium preferably comprises: also commands that, when executed on a computer, cause the computer to execute the method of the invention to prevent the heat recovery system from freezing.
    Figure 5 shows an embodiment of the invention. Preferably, a method for upgrading an existing air handling unit is described herein.
    Here, the existing Air Handling Unit 10 comprises a first air duct 12 for air to be cooled. Under the conditions where the effect of the invention can be achieved, moist air is flowing in the first air duct, and in most cases this is exhaust air from the room to be ventilated; naturally, there is no significant risk of freezing in completely or very dry air. The first air duct 12 comprises an air outlet 15 through which air to be cooled is arranged to flow to the first air duct and an air outlet 18 through which air to be cooled is arranged to flow out of the first air duct after air treatment. The air treatment unit 10 further comprises a second air duct 14 for heated air. Such a duct can also be called a supply air duct. In most cases, when the effect of the invention occurs, the air to be cooled is the exhaust air of the building and the heated air is the supply air of the building. The second air duct 14 also comprises an air inlet 20 through which the heated air is arranged to flow into the second air duct 14 for treating air and an air outlet 22 through which the heated air is arranged to flow out of the second air duct 14 after the concept of air.
    The existing air handling unit 10 further comprises a heat recovery system 24 arranged in connection with the first 12 and second air ducts 14 in the area between these inlets 16, 20 and outlets 18,22 arranged to transfer heat between the heated and cooled air streams 30 in the air ducts. In practice, the existing heat recovery system may be implemented using any suitable heat exchanger or heat exchangers. The existing machine assembly comprises a fan 32,34 in connection with both the first and second air ducts to provide air flow. Further, the existing air treatment unit 10 comprises, in connection with the second air duct 14, an air after-heating device 500 which may be
    20180523 2
    20185475 prh 23 -05-2018 connected, for example, to a building's liquid heating system using district heating or the building's own heat production plant as the heat source.
    The existing air handling unit is modernized by applying the method of installing a heat pump unit 26 in the air handling unit as follows. The first air duct 12 is fitted with a heat pump unit evaporator 28 'after the heat recovery system 24 in the direction of air flow that occurs when the unit is operating normally. During operation, the so-called. the working fluid is evaporated and possibly also superheated, whereby the exhaust air transfers heat to the working material. Further, the method of upgrading the air handling unit includes installing a condenser 30 'of the heat pump unit 26 in connection with the first air duct 12 prior to the heat recovery system 24 in the direction of air flow that occurs when the unit is running.
    After the upgrade, freezing of the heat recovery system 24 of the existing AHU can be avoided and at the same time the efficiency of the AHU can be improved by means of a heat pump assembly.
    Preferably, in the reform, a temperature transmitter or meter 502 is installed in connection with the second air duct 14, in the air flow direction prior to the reheater 500, to measure the air temperature in the air duct, and the heat pump is configured to maintain a second air duct weapons in degrees Celsius.
    The heat pump configuration comprises preferably installing a heat pump unit control unit 504 in an air treatment unit according to the method of the invention. The control unit comprises a computer or other storage medium comprising commands that, when executed by a computer, cause the heat pump to operate in a second air duct. 500 in a predefined area.
    If the heat recovery system is multistage, the second heat exchanger unit 30 is provided at least prior to the last step of the heat recovery system in the first air duct in the direction of the filing air.
    It should be noted that only some of the most preferred embodiments of the invention have been described above. Thus, it is to be understood that the invention is not limited to the above embodiments, but can be applied in many ways within the scope defined by the appended claims. The features disclosed in connection with the various embodiments may be provided by the invention
    20180523 2 also, in the context of other embodiments, use other entities and / or combine different features, if desired and technically possible.
    权利要求:
    Claims (11)
    [1]
    Pate requirement
    An air treatment unit (10) comprising a first air duct (12) for cooling air, comprising an air inlet (16) and an air outlet (18),
    A second air duct (14) for heated air comprising an air inlet (20) and an air outlet (22), and a heat recovery system (24) arranged in connection with the first (12) and second air duct (14) arranged to transfer heat to the air duct 12,14) between the heated and cooled air vents and the heat pump assembly
    10 (26), characterized in that the heat pump assembly (26) comprises a first heat exchanger unit (28) arranged to cool the filing air in the first air duct (12) and that the first heat exchanger unit (26) is arranged in connection with the first air duct downstream of the heat recovery system wherein the heat pump assembly (26) comprises a second heat exchanger unit (30) arranged to heat filing air in the first air channel (12), and that the second heat exchanger unit (30) is arranged in connection with the first air channel (12) prior to the heat recovery system (24).
    [2]
    Air treatment unit (10) according to claim 1, characterized in that
    The heat pump assembly (26) comprises a heat pump (44), and the heat pump assembly (26) comprises a heat accumulator (48) arranged to heat the heat pump, and the heat accumulator (48) is coupled to the second heat transfer unit (30).
    25
    [3]
    Air treatment unit (10) according to claim 1, characterized in that the heat pump unit (26) comprises a heat pump (44) and that the first heat exchanger unit (28) of the heat pump unit is a heat pump evaporator and the second heat exchanger unit (30) is a heat pump unit.
    30
    [4]
    Air treatment unit (10) according to claim 2, characterized in that the heat pump unit (26) comprises a third heat exchanger unit (46) arranged in a second air channel downstream of the heat recovery system connected to the heat exchanger (48).
    20180523 2
    20185475 prh 23 -05- 2018
    [5]
    Air treatment unit (10) according to Claim 4, characterized in that the air treatment unit (10) comprises a heat accumulator (48), and that the second heat exchanger unit (30) and the third heat exchanger unit (46) are connected to the heat accumulator (48). are parallel to each other.
    [6]
    A method of operating an air handling unit (10), the air handling unit comprising a first air duct (12) for cooling air comprising an air inlet (16) and an air outlet (18), a second air duct (14) for heated air, including an air inlet (20) 22), and
    A heat recovery system (24) arranged in connection with the first and second air ducts (12,14) arranged in an area between these inlets and outlets arranged to transfer heat between the heated and cooled air in the air ducts and a heat pump assembly (26) and the heated air is passed through 15 second air ducts (14), and heat from the air to be cooled is transferred to the heated air by a heat recovery system (24), characterized in that the heat pump means (26) transfers heat from the first air duct (12) applying heat to the first air duct 20 (12) through the heat pump assembly (26) to the filing air in a magical manner in the air flow direction prior to the heat a retrieval system (24).
    [7]
    Method according to Claim 6, characterized in that heat is transferred from the filing air in the first air channel (12),
    After the 25 recovery system, heat is transferred to the heat accumulator (48) and the heat accumulator (48) in the first air duct (12) in the filing air, air flow direction prior to the heat recovery system (24).
    [8]
    Method according to claim 6, characterized in that heat is transferred from the filing air in the first air duct (12) directly to the working material of the heat pump assembly (26) by evaporating the working material with a first heat exchanger unit (28) fitted to the first air duct in the first air duct, a wipe to the air so that the working fluid is condensed on the first air duct (12) by a second heat transfer unit (30), which is heated.
    20180523 2
    20185475 prh 23 -05- 2018
    [9]
    Method according to claim 7, characterized in that the heat is transferred from the heat reservoir (48) to the filing air in the second air duct (14), downstream of the heat recovery system (24), and in the first
    5 in the duct (12) to the filing air, in the direction of air flow before the heat recovery system (24).
    [10]
    A method for upgrading an air treatment unit, the existing air treatment unit (10) comprising a first air duct (12) for cooling air
    10 comprising an air inlet (16) and an air outlet (18), a second air duct (14) for heated air comprising an air inlet (20) and an air outlet (22), and a heat recovery system (24) arranged in connection with the first and second air ducts and outlets arranged to transfer heat between the heated and cooled air in the air ducts, and the still existing air treatment unit (10) comprises a post-heating device (500) in connection with the second air duct (14), characterized in that the method installing a heat pump pump evaporator (28 ') in the first air duct (12) of the air handling unit, downstream of the heat recovery system (24), and further so that the air handling unit first the condenser of the heat pump unit (26) is installed in the primary air duct before the heat recovery system (24) in the direction of air flow.
    [11]
    A method for upgrading an air treatment unit according to claim 10, characterized in that the replacement comprises installing a temperature transmitter or meter (502) in connection with the second air duct (14) to measure the temperature of the duct air in the air duct before the after heater (500) and to maintain the heat pump unit. the temperature of the air in the air duct before the reheater (500) within a predetermined range.
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP3572738A2|2019-11-27|
    EP3572738B1|2021-06-23|
    EP3572738A3|2020-01-15|
    PL3572738T3|2021-12-20|
    FI128644B|2020-09-30|
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    EP1616133B1|2003-04-23|2008-10-22|Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.|Combined fluid-air evaporator and novel switching concept for a heat pump in a ventilating apparatus|
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    EP19174893.8A| EP3572738B1|2018-05-23|2019-05-16|An air handling assembly and a method of upgrading an air handling assembly|
    PL19174893T| PL3572738T3|2018-05-23|2019-05-16|An air handling assembly and a method of upgrading an air handling assembly|
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