• 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:
    Heat production plant including a heat accumulator comprising: a heat accumulator (10) of the stratified type; a heat generator (11); a delivery circuit between said heat generator (11) and said heat accumulator (10); a first return circuit between said heat generator (11) and said heat accumulator (10); characterized in that said first return circuit draws water from said heat accumulator (10) through a first withdrawal pipeline (25) placed at a first height, until a predetermined temperature is reached and said delivery circuit sends water to said heat accumulator (10) through a conduit (15) for placing at a second height, where said first height is greater than said second height; and to comprise a second return circuit which draws water from said heat accumulator (10) through a second withdrawal duct (13) located at a third height, after reaching said predetermined temperature, where said first height is greater than said third height.
    公开号:CH714689A2
    申请号:CH00208/19
    申请日:2019-02-19
    公开日:2019-08-30
    发明作者:Paolino Dino；Plebani Massimo；Ghidotti Gianluigi
    申请人:Quality Life Environmental Tech Sa；
    IPC主号:
    专利说明:

    Description [0001] The present invention refers to a heat production plant including a heat accumulator. [0002] In a house or in an industry, thermal energy is required for various needs.
    [0003] For optimum efficiency and maximum versatility of use, it is customary to combine a heat accumulator with a heat generator.
    [0004] There are different types of heat accumulators.
    [0005] A particular stratified heat accumulator is described in documents EP 0 861 985 and EP 1 076 219.
    [0006] This is an accumulator that exploits the natural tendency of water to stratify according to temperature. Cold water has a density greater than hot water and therefore tends to settle on the bottom of any container, as occurs in all accumulators with the heating system stopped. In this case, the device includes stratifiers made up of appropriate discs, with vertical channels and lateral channels, arranged in a column that maintain optimal stratification even with the system running.
    [0007] Each flow of water that is introduced into the accumulator automatically positions itself at the height where there is already water with the same temperature.
    [0008] The object of the present invention is to provide a hot water production system including a heat accumulator which quickly heats the heat accumulator.
    [0009] Another purpose is to provide a hot water production system including a heat accumulator that has lower consumption than the known art.
    [0010] In accordance with the present invention, these aims and others are achieved by a heat production plant comprising a heat accumulator comprising: a stratified type heat accumulator; a heat generator; a delivery circuit between said heat generator and said heat accumulator; a first return circuit between said heat generator and said heat accumulator; characterized in that said first return circuit draws water from said heat accumulator through a first sampling line placed at a first height, until reaching a predetermined temperature and said delivery circuit sends water to said heat accumulator through a pipeline input placed at a second height, where said first height is higher than said second height; and comprising a second return circuit which draws water from said heat accumulator through a second sampling line placed at a third height, after reaching said predetermined temperature, where said first height is higher than said third height.
    [0011] Further characteristics of the invention are described in the dependent claims.
    [0012] The characteristics and advantages of the present invention will become clear from the following detailed description of a practical embodiment thereof, illustrated by way of non-limiting example in the accompanying drawings, in which:
    fig. 1 schematically shows a heat production plant including a heat accumulator for the production of technical water, according to the present invention;
    fig. 2 schematically shows a heat production plant including a heat accumulator for the production of domestic hot water, according to the present invention;
    fig. 3 schematically shows a heat production plant including a heat accumulator for heating, according to the present invention.
    [0013] Referring to the attached figures, a heat production plant including a heat accumulator, according to the present invention, in particular for the production of technical water comprises a heat accumulator 10 of the stratified type and a heat generator 11 of the heat pump type.
    [0014] The heat accumulator 10 comprises inside a lower stratification column 12 having a connection with the outside by means of a conduit 13 located at about half the height of the accumulator 10, and an upper stratification column 14 having an external connection by means of a conduit 15 located at about half the height of the accumulator 10.
    [0015] Normally the pipes 13 and 15, unlike the attached figures drawn by way of example, are placed at the same height and at about half the height of the accumulator 10, and may also not be connected directly to the stratification columns.
    [0016] The heat accumulator 10 also includes an upper outlet pipe 16, placed at the top of the accumulator 10, for the withdrawal of hot water, and a lower outlet pipe 17, placed at the base of the accumulator 10.
    CH 714 689 A2 [0017] The heat accumulator 10 provides for the presence of three thermal probes for measuring the temperature of the water inside it, a top 20, a central 21 and a bottom 22.
    [0018] In accordance with the present invention, the accumulator 10 comprises a further connection with the outside through a conduit 25 placed at a height of about 3/4 of the entire height of the accumulator 10.
    [0019] The pipeline 25 is connected to a three-way valve 26, connected, in line, to the return connection 27 of the heat generator 11, and the intermediate outlet is connected to the pipeline 13 of the lower stratification column 12.
    [0020] The delivery 28 of the heat generator 11 is connected to the pipeline 15 of the upper stratification column 14.
    [0021] In the case of the production of domestic hot water to the plant in fig. 1 an exchanger 30 is added, which draws technical water from the upper outlet pipe 16, placed at the top of the accumulator 10, aided by a pump 31, and discharges it into the accumulator 10 through the pipe 13 of the lower stratification column 12.
    [0022] Domestic hot water is drawn from the outlet pipes 32 and 33 of the exchanger 30.
    [0023] In the case of a heating system to the system in fig. 1 there is added a delivery 35 of hot water connected to the pipeline 15 of the upper stratification column 14, including a three-way valve 36 in line with a pump 37 and with the intermediate outlet connected to the pipeline 13; and a return flow 38 connected to the conduit 13 of the lower stratification column 12.
    [0024] In an accumulator of the prior art, in the absence of the further connection with the outside of the pipeline 25, the withdrawal of the water from the accumulator 10 for the generator 11 always takes place from the pipeline 13, at a lower temperature than the water taken from the pipeline 25 due to the stratification of the water.
    [0025] The operation of the invention is evident to those skilled in the art from what has been described and in particular it is the following.
    For the three-way valve 26, for example, a thermostatic valve calibrated for example at 40 ° C can be used.
    As an alternative to the three-way valve 26, other means can be used which allow water to be withdrawn from the pipeline 25, until a predetermined temperature is reached and from the pipeline 13 after the predetermined temperature has been reached, such as for example thermostatic regulators.
    [0028] On return 27 of the heat generator 11, the water coming from the pipeline 25 is presented as long as this water reaches 40 ° C after which the water is brought from the pipeline 13 of the lower stratification column 12.
    Alternatively, a three-way valve controlled by a microprocessor programmed for the purpose can be used.
    [0030] The value of the calibration temperature of the valve 26 can be between 30 ° and 50 ° C, and in the case of the use of a microprocessor, the calibration temperature can vary according to the conditions indicated by the temperature sensors present in the facility.
    [0031] Suppose now that the water of the entire accumulator is cold and the sensors 20-22 indicate a temperature of 20 ° C, and you want to heat the water, to bring the sensor 20 to 50 °.
    [0032] The heat generator 11 receives water from the pipeline 25 at a temperature of 20 ° C, and in the case of a heat pump the water at its outlet 28 and at the inlet 15 of the upper stratification column 14 will be 26 ° C , therefore the sensor 20, due to the stratification, will indicate 26 ° C, and the sensor 21 will still indicate 20 ° C.
    [0033] Subsequently, the water withdrawn from the pipeline 25 for the heat generator will probably be at 23 ° C, or more, therefore water warmer than the water present in the pipeline 13 (which will still be 20 ° C).
    [0034] The temperature at the inlet of the heat generator 11 will be 23 ° C and the outlet will be 29 ° C.
    [0035] Therefore, the sensor 20 will be at 29 ° C, the inlet temperature of the heat pump 11 will probably be 24.5 ° C (and not yet 20 if taken from the pipe 13) and the outlet temperature from the heat pump 11 and inlet to conduit 15 will be 30.5 ° C.
    [0036] The process will continue in this way until the temperature of 40 ° C is reached at the thermostatic valve 26.
    [0037] The operation will be equivalent to what described above also in the case of production of domestic hot water and in the case of a heating system.
    [0038] The withdrawal of the water from the pipeline 25 for the heat generator will always be at a temperature higher than the water temperature at the height of the pipeline 13, because, due to the stratification, the hot water will always go towards the top of the accumulator 10.
    [0039] Upon reaching the temperature of 40 ° C at the thermostatic valve 26, the water will be withdrawn from the pipeline 13 in order to work with the heat pump with greater efficiency.
    [0040] In this way it will be possible to complete the heating of the water in the lower part of the accumulator.
    CH 714 689 A2 [0041] Withdrawal from the pipeline 25 allows to decrease the temperature difference by making the heat pump outlet temperature rise faster.
    [0042] The operating time of the heat pump 11 with respect to traditional technologies is halved, with considerable energy savings, and the defrosting cycle decreases.
    [0043] The height of the position of the pipeline 25 must be chosen so that it is higher than the height of the pipeline 13 to access the water at a temperature higher than the temperature present at the pipeline 13. At the same time it must not be placed too far high to prevent too hot water from being drawn and the accumulator cannot be heated correctly.
    [0044] For the convenience of building the system, you can think of an external pipe 25 at the best height for the system, but you can place a tube inside the accumulator 10 to position the water intake at the most appropriate height.
    [0045] The height of the conduit 25 was chosen in an example of construction of the 3A system of the total height of the accumulator 25, but the height could be between 5/8 and 7/8 of the total height of the accumulator 10 and in any case at a height greater than that of the conduit 13.
    [0046] The heights of the positioning of the pipes refer to the base of the heat accumulator 10.
    [0047] The sensor 21 manages the temperature in the central zone and is linked to that required by heating in climate. Sensor 22 detects the temperature in the lower part of the accumulator, the sensors are used to monitor the operation of the system.
    权利要求:
    Claims (10)
    [1]
    1. Heat production plant including a heat accumulator comprising: a heat accumulator (10) of the stratified type;
    a heat generator (11);
    a delivery circuit between said heat generator (11) and said heat accumulator (10); a first return circuit between said heat generator (11) and said heat accumulator (10); characterized in that said first return circuit draws water from said heat accumulator (10) through a first sampling pipe (25) placed at a first height, until reaching a predetermined temperature and said delivery circuit sends water to said heat accumulator (10) by means of an inlet pipe (15) placed at a second height, where said first height is higher than said second height; and comprising a second return circuit which draws water from said heat accumulator (10) through a second sampling pipe (13) placed at a third height, after reaching said predetermined temperature, where said first height is higher than said third height.
    [2]
    2. Plant according to claim 1 characterized in that it comprises means for withdrawing water from said first pipeline (25) until reaching a predetermined temperature and from said second pipeline (13) after reaching said predetermined temperature.
    [3]
    System according to one of the preceding claims, characterized in that said first height is located between 5/8 and 7/8 of the total height of said heat accumulator (10).
    [4]
    4. Plant according to one of the preceding claims, characterized in that said predetermined temperature is comprised between 30 ° and 50 ° C.
    [5]
    Plant according to one of the preceding claims, characterized in that said heat accumulator (10) comprises an upper stratification column (14) having a first connection with the outside by means of a first conduit (15) located at about half of the the height of said heat accumulator (10) and a lower stratification column (12) having a second connection with the outside by means of a second conduit (13) placed at about half the height of said heat accumulator (10).
    [6]
    6. Plant according to claim 5 characterized in that said return circuit draws water from said heat accumulator (10) from said sampling pipe (25) and sends it to a first three-way valve (26) connected in line , to the return connection (27) of said heat generator (11), and the intermediate outlet of said first three-way valve (26) is connected to said second conduit (13).
    [7]
    System according to claim 5 characterized in that said delivery circuit sends water to said heat accumulator (10) to said first conduit (15).
    [8]
    8. Plant according to claim 5 characterized in that said heat accumulator (10) comprises a third conduit (16) placed at the top of said heat accumulator (10), and said plant comprises a heat exchanger (30) which it receives water from said third pipeline (16) and feeds it to said second pipeline (13).
    CH 714 689 A2
    [9]
    System according to claim 5 characterized in that it comprises a hot water delivery line (35) connected to said first pipeline (15), which sends water to a second three-way valve (36) connected in line with a pump (37) and having an intermediate outlet connected to said second conduit (13); and a return flow (38) connected to said second conduit (13).
    [10]
    10. Plant according to claim 1 characterized in that said heat generator (11) is a heat pump.
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    同族专利:
    公开号 | 公开日
    IT201800002920A1|2019-08-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    IT1398061B1|2010-02-04|2013-02-07|Thermorossi Spa|WATER-BASED ACCUMULATOR DEVICE, PARTICULARLY PRIMARY WATER|
    AT510578B1|2010-11-22|2012-05-15|Vaillant Group Austria Gmbh|LAYERS MEMORY|
    DE102014202846A1|2014-02-17|2015-08-20|Siemens Aktiengesellschaft|Method and device for unloading a thermal stratified storage tank|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT102018000002920A|IT201800002920A1|2018-02-21|2018-02-21|HEAT PRODUCTION PLANT INCLUDING A HEAT ACCUMULATOR|
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