• 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:
    The invention relates to a device for increasing the source temperature of a source of a heat pump system having a heating circuit and a source circuit connected to the source, the device comprising: (a) a first heat exchanger which is set up to be arranged between the heating circuit and the source circuit , (b) a second heat exchanger, which is also arranged to be arranged between the heating circuit and the source circuit, and (c) a control system, which is connected to the first heat exchanger and the second heat exchanger and is arranged to be connected to the heat pump to be connected in order to control an additional electrical heater of the heat pump, the control system comprising: (i) a first control function for transferring heat via the first heat exchanger from the heating circuit to the source circuit and (ii) a second control function for switching on the additional electrical heater and transferring the heat generated thereby over the second heat exchanger from the heating circuit to the source circuit. Furthermore, the invention also comprises a heat pump system with a heat pump and such a device.
    公开号:CH715659B1
    申请号:CH00852/19
    申请日:2019-06-20
    公开日:2020-06-30
    发明作者:Benken Hans-Georg
    申请人:Dr Ing Hans Georg Benken；
    IPC主号:
    专利说明:

    The invention relates to a device for increasing the source temperature of a source of a heat pump system by transferring heat from the heating circuit to a source circuit connected to the source and a heat pump system with a heat pump and such a device.
    Heat pump systems are known devices from the prior art, with which the heat stored in the environment can be used to heat a building. Air, soil and groundwater are generally considered as sources of the environment. If, for example, the ground is used as a source, a so-called source circuit of the heat pump system is arranged in the ground, which is connected to a heat pump, in particular a so-called brine-water heat pump, of the heat pump system. The source circuit has pipes in the ground through which a mixture of water and antifreeze, the so-called brine, circulates. The brine absorbs the heat from the earth and transports it to the heat pump. The pipes can be arranged in the ground, for example in the form of deep holes or flat collectors. The source circuit of the heat pump system has a source circuit flow and a source circuit return. In the source circuit flow, the heat extracted from the ground is transported to the heat pump, where it is passed to a heating circuit for giving off heat in a building via, for example, a heater. In the source circuit return line, the brine that has given off its heat is led back into the ground in order to absorb further heat and use it to heat the building.
    Heat pump systems known from the prior art cannot be operated as efficiently as would be desirable.
    [0004] DE 10 2014 008 836 discloses a method and device for operating a heat recovery system with a heat pump, with which the efficiency of heat pump systems can be increased.
    The invention has for its object to increase the source temperature of the source of a heat pump system by the device required for the implementation of this method is designed as a multifunctional assembly with which with only one control system to increase the source temperature both the removal of heat the heating circuit and regeneration of the source by converting electricity into heat is possible.
    The above object is achieved by a device for increasing the source temperature of a source of a heat pump with a heating circuit and a source circuit connected to the source according to claim 1 and a heat pump system according to claim 8. Features that are described in connection with the device according to the invention also apply in connection with the heat pump system according to the invention.
    According to a first aspect, the invention achieves the object by a device for increasing the source temperature of a source of a heat pump system with a heating circuit and a source circuit connected to the source, the device comprising: (a) a first heat exchanger which is set up for this purpose to be arranged between the heating circuit and the source circuit, (b) a second heat exchanger which is designed to be arranged between the heating circuit and the source circuit, and (c) a control system which is connected to the first heat exchanger and the second heat exchanger and is set up to be connected to the heat pump in order to control an additional electrical heating of the heat pump, the control system comprising: (i) a first control function for transferring heat via the first heat exchanger from the heating circuit to the source circuit and (ii ) a second control function for switching on the additional electric heating and transmission gene of the heat generated by the second heat exchanger from the heating circuit in the source circuit.
    The device according to the invention can use the first heat exchanger and the first control function to determine a quantity of heat to be determined from the heating circuit and direct it to the source circuit in order to increase the temperature of the source.
    Through a limited supply of heat, in particular by means of a controllable circulation pump, the annual coefficient of performance can be increased as an efficiency of the heat pump.
    The device according to the invention can further convert the current into heat by means of the additional heating, in particular built into the heat pump, which can be formed, for example, by electric heating elements, with the second heat exchanger and the second control function, which can be supplied to the source circuit, to increase the efficiency of the heat pump.
    [0011] The control system can have at least one processor and at least one memory in which the control functions are stored. The processor can be designed to perform the control functions.
    In particular, the device is set up not to intervene in the regulation of a heat pump in normal operation. The normal operation of a heat pump is characterized by charging processes for heating and domestic water heating.
    In an advantageous embodiment of the invention, the control system is set up to be connected to a first temperature sensor in a source circuit flow of the source circuit and / or a second temperature sensor in a source circuit return of the source circuit. In addition, the control system can be set up to communicate with the first temperature sensor and / or the second temperature sensor. This allows the temperature spread in the source circuit to be determined. The control system can be set up to take into account the determined temperature spread in the source circuit in the first control function and / or the second control function, in accordance with the amount of heat provided for a limited removal in accordance with the first control function and / or the amount of current supplied to the additional heating to regulate the second control function.
    In a further advantageous embodiment of the invention, the control system has a third control function for determining a target temperature of the source circuit return based on a measured temperature in the source circuit flow and a measured temperature in the source circuit return. The control system can accordingly be set up to set the target temperature of the source circuit return and / or the source circuit advance by executing the first control function and / or executing the second control function. In other words, the control system can regulate the first heat exchanger and / or the second heat exchanger on the basis of the calculated setpoint temperature of the source circuit return and thus influence the source circuit supply. To determine the target temperature of the source circuit return and / or the source circuit flow, an efficiency determined by the control system can be used as parameters, for example.
    In a still further advantageous embodiment of the invention, the control system has a fourth control function for controlling the target temperature on the basis of a current electricity price, a temporarily available electricity and / or an energy source of the electricity, for example only electricity from renewable energies. The current electricity price and the energy source, for example renewable energies, of the electricity are thus parameters which influence the determination of the target temperature or regulation of the target temperature. For example, in areas where electricity can be obtained more cheaply at night than during the day, the second control function can preferably be carried out in order to enable the heat pump system to operate more cheaply. For example, it is also possible to carry out the second control function only when it is available and / or only with electricity generated from renewable energies, in order to increase the ecological balance of the heat pump.
    In a further advantageous embodiment of the invention, the device has a fifth control function for diverting all heat from the heating circuit into the source circuit in a start-up phase of the heat pump. The start-up phase can include a period from the switching on of the compressor to the point in time at which the temperature in the heating circuit flow of the heat pump is at least 1 degree, in particular at least 2 degrees, higher than the temperature in the heating.
    [0017] As a result, the temperature which is still insufficient in the start-up phase for heating the building is used to heat the source, and thus the efficiency of the heat pump is increased.
    In a further advantageous embodiment of the invention, the device has a circulation pump which is connected to the first heat exchanger. The circulation pump enables the amount of heat to be transferred to be limited.
    In a further embodiment of the invention, the circulation pump is arranged in a second line which is set up to be connected to a heating circuit return of the heating circuit.
    In a further preferred embodiment of the invention, the device has a sixth control function for operating at least one source pump in the source circuit and one heating circuit pump in the heating circuit after the heat pump has been switched off. In particular, one compressor of the heat pump, in the case of a cascade connection, all compressors of the heat pump is switched off. In particular, the circulation pump can also continue to be operated after the heat pump has been switched off by means of the sixth control function. As a result, an otherwise unused residual heat from the heating circuit can be used to heat the source in order to enable higher efficiency at a later time of operation of the heat pump.
    The device can have two separate modules, wherein a first module can comprise the first heat exchanger and the second heat exchanger and the second module can comprise the control system. The modules can be functional independently of one another.
    In a further preferred embodiment, the first heat exchanger, the second heat exchanger and the control system are arranged in a common housing. This creates a compact and easily replaceable assembly.
    In a more preferred embodiment, the device is designed as a retrofit system for heat pump systems. In particular, this means that the device is a self-contained system, which is set up to be arranged on any heat pumps.
    In a further preferred embodiment, an output of the first heat exchanger is less than an output of the second heat exchanger. This provides a particularly economical device since the first heat exchanger only has to be able to remove small amounts of heat from the heating circuit, while larger amounts of heat can be conducted into the source with the second heat exchanger.
    According to a second aspect, the invention solves the problem by a heat pump system with a heat pump and a device according to the invention for increasing the source temperature of a source of the heat pump, the heat pump system having a source circuit connected or connectable to the heat pump with a source circuit return and a source circuit Flow and a heating circuit connected or connectable to the heat pump with a heating circuit return and a heating circuit flow, the source circuit being connected to a source or being designed to be connected to a source.
    In a further preferred embodiment, the control system is connected to a first temperature sensor in the source circuit flow and / or a second temperature sensor in the source circuit return.
    In yet another preferred embodiment, the first temperature sensor and / or the second temperature sensor can detect temperature changes of 0.5 K, in particular 0.3 K and furthermore in particular 0.1 K. The accuracy in the detection of the temperature changes enables a high increase in efficiency by means of the first control function.
    [0028] In a particularly advantageous embodiment of the invention, the source circuit is connected to an additional heat store. In one embodiment of the heat pump as a brine / water heat pump, an additional heat store can be arranged (in order to also be able to store heat at a higher temperature and to be able to emit it later if necessary). In other embodiments of the heat pump, such as an air / water heat pump, an additional heat store must be arranged (so that the heat pump system does not lose any heat generated by transmission according to FIG. 3 or conversion according to FIG. 4).
    The heat stored in the additional heat accumulator can, for example in an air / water heat pump in cold night hours with a low air temperature, be gradually fed back to the source circuit of the heat pump system and thus increase the temperature in the source circuit of the heat pump and increase its efficiency.
    The storage of heat in the additional heat store and the subsequent release of this heat to the source circuit can be controlled by a seventh control function of the control system.
    The first control function and / or second control function can also be set up to conduct the heat removed from the heating circuit into the additional heat store and / or the source. The additional heat storage means that the heat can be stored efficiently.
    Preferably, the heat pump is a brine-water heat pump. This is particularly advantageous for the execution of the second control function. Other embodiments of the heat pump are possible. In heat pump systems with a brine / water heat pump, the heat generated is stored inexpensively in geothermal probes and in a surrounding soil without additional effort.
    In other designs such as air / water or water / water heat pumps, the heat transferred into the source circuit must preferably be stored in an additional heat store connected to it.
    The invention is explained in more detail below with the aid of the accompanying drawings. Elements with the same function and / or mode of operation are each provided with the same reference symbols in the figures. Show it:<tb> Fig. 1 <SEP> is a schematic view of an embodiment of a device according to the invention and<tb> Fig. 2 <SEP> is a schematic view of an embodiment of a heat pump system according to the invention in a first operating mode,<tb> Fig. 3 <SEP> is a schematic view of the exemplary embodiment from FIG. 2 in a second operating mode, and<tb> Fig. 4 <SEP> is a schematic view of the exemplary embodiment from FIG. 2 in a third operating mode.
    The lines used for a particular mode of operation for the transport of heat are shown in bold. Control loops of the control system are shown in dotted lines.
    Fig. 1 shows a schematic view of an embodiment of a device 10 according to the invention with a housing 11. In the housing 11, a first module 12 and a second module 13 are arranged. The first module 12 has a first heat exchanger 20 and a second heat exchanger 30. A circulation pump 22 is connected to the first heat exchanger 20. The second module 13 has a control system 40 with a processor 41 and a memory 42. A first, second, third, fourth, fifth, sixth and seventh control function are stored in the memory 42. The connection of the first heat exchanger 20 and the second heat exchanger 30 to the control system 40 is explained with reference to FIG. 2.
    Fig. 2 shows a schematic view of an embodiment of a heat pump system 80 according to the invention with a heat pump 70 and a device 10 according to FIG. 1. The first mode of operation corresponds to normal operation of the heat pump system 80 without executing the first or second control function of the control system 40. Shown is normal operation without heat transfer, only the existing temperature values of source circuit flow 52 and source circuit return 54 are transferred to the added control system 40. Temperature values 53, 55 arranged in the source circuit 50 continuously transmit temperature values in a source circuit flow 52 and source circuit return 54 of the source circuit 50 to the control system 40 via the control circuit shown in dotted lines. The control system 40 has a third control function for determining a target temperature of the source circuit return 54 on the basis, in particular, only of the measured temperature in the source circuit lead 52 and the measured temperature in the source circuit return 54. If the determined target value is undershot, the control system 40 can perform a seventh and / or a first and / or a second control function.
    In Fig. 3, which shows a schematic view of the heat pump system according to the invention from Fig. 2 in a second mode of operation, the case is shown in which a setpoint was undershot and the control system 40, the first control function for transferring heat via the first Executes heat exchanger 20 from the heating circuit 60 in the source circuit 50.
    The heat pump system 80 has a source circuit 50 which is connected to a source 51, which can be, for example, the ground. The source circuit 50 is connected via a source circuit flow 52 and a source circuit return 54 to the heat pump 70, which has an additional heater 71. A first temperature sensor 53 is arranged in the source circuit flow 52 and a second temperature sensor 55 is arranged in the source circuit return 54. A source pump 56 is also arranged in the source circuit lead 52. In addition, a three-way valve 21 (in connection with the heat exchanger 20) and a three-way valve 34 (in connection with the heat exchanger 30) are arranged in the source circuit supply line 52.
    The heat pump system 80 also has a heating circuit 60 which is connected to a heater 61, which can be, for example, underfloor heating in a building. The heating circuit 60 is connected to the heat pump 70 via a heating circuit flow 62 and a heating circuit return 63. A heating circuit pump 64 is also arranged in the heating circuit flow 62.
    The first heat exchanger 20 is connected via line 23 (with the three-way valve 21) and line 24 to the source flow 52. The heat exchanger 20 is connected to the heating circuit flow 62 via the line 25, in which a circulation pump 22 is arranged, and is connected to the heating circuit return 63 via the line 26.
    Via the first heat exchanger 20, heat can be removed from the heating circuit 60 and fed to the source circuit 50, so that the efficiency of the heat pump system 80 can be increased. This can be done according to a first control function stored in the memory 42 of the control system 40.
    The process of transferring heat from the heating circuit flow 62 into the source circuit 50 via the heat exchanger 20 is ended as soon as a setpoint value specified by the control system 40 in the source circuit return 54 has been reached.
    In Fig. 4, which shows a schematic view of the heat pump system according to the invention from Fig. 2 in a third mode of operation, it can be seen how the regeneration of the source 51 possible by converting electricity into heat takes place by means of the second control function. FIG. 4 thus shows the regeneration of the source 51 by transferring heat that is generated solely by the additional electrical heater 71 of the heat pump 70. The compressor of the heat pump 70 is out of operation, the source pump 56 and the heating circuit pump 64 operate as in normal operation. The control system 40 causes the additional electrical heater 71 to be switched on, the three-way valve 31 in the heating circuit 60 to be switched over (this separates the heating 61 from the heat pump 70) and the three-way valve 34 in the source circuit 50 to be switched over (the heat can be derived from the medium in the source circuit 50 in Heat exchanger 30 are added and passed directly to the source 51). For this purpose, the control system 40 initiates the connection of the additional electrical heating integrated in the heat pump 70 (this is in particular the only possible access of the control system to the otherwise independent control of the heat pump 70).
    The heat exchanger 30 required for this is connected to the heating circuit 60 via the line 32 as soon as the three-way valve 31 switches and thus separates the heater 61 from a supply of heat from the heat pump 70. The heated water is returned to the heat pump 70 via the line 33 and the heating circuit return 63.
    The connection between the heat exchanger 30 and the source circuit 50 is established in that the three-way valve 34 in line source 52 releases line 35 to the heat exchanger. The heat transferred in the heat exchanger is conducted via line 36 to source circuit 50 and from there via source circuit return 54 to source 51. This source 51 can be an earth probe system or an additional heat store suitable for absorbing this heat.
    In the same way, it is also possible to regenerate the source 51 by removing heat at an even lower temperature from the heating circuit flow 62 of the heat pump 70 during the start-up phase. This takes place by means of a fifth control function of the control system 40. The process is ended as soon as the temperature in the heating circuit flow 62 is a few degrees above the temperature in the heater 61, the three-way valve 31 is then switched back to the heater.
    Another possibility for the regeneration of the source 51 offers the use of residual heat from the entire heat pump system after the charging processes for heating and hot water heating ended by switching off the compressor of the heat pump 70. The process is the same as the process described above in the start-up phase, for which the sixth control function of the control system 40 is responsible. The process ends as soon as the heat that can still be used is removed from the system.
    A great advantage results from the combination of all components for all functions in a compact unit. There is no additional effort for the generation of heat for the regeneration of the heat source, which would hardly be worthwhile in most systems given the relatively small amounts of heat when using heat in the start-up phase and after the heat pump has been switched off.
    Reference list
    10 device 11 housing 12 first module 13 second module 20 first heat exchanger 21 three-way valve 22 circulation pump 23 line 24 line 30 second heat exchanger 31 three-way valve 32 line 33 line 34 three-way valve 35 line 36 line 40 control system 41 processor 42 memory 50 source circuit 51 source 52 Source circuit flow 53 first temperature sensor 54 source circuit return 55 second temperature sensor 56 source pump 60 heating circuit 61 heating 62 heating circuit flow 63 heating circuit return 64 heating circuit pump 70 heat pump 71 additional heating 80 heat pump system
    权利要求:
    Claims (10)
    [1]
    1. Device (10) for increasing the source temperature of a source (51) of a heat pump system (80) with a heating circuit (60) and a source circuit (50) connected to the source (51), the device (10) comprising:(a) a first heat exchanger (20) which is set up to be arranged between the heating circuit (60) and the source circuit (50),(b) a second heat exchanger (30) which is arranged to be arranged between the heating circuit (60) and the source circuit (50), and(c) a control system (40) which is connected to the first heat exchanger (20) and the second heat exchanger (30) and is designed to be connected to the heat pump (70) by an additional electrical heater (71) of the heat pump (70) to be controlled, the control system (40) having:(i) a first control function for transferring heat via the first heat exchanger (20) from the heating circuit (60) to the source circuit (50) and(ii) a second control function for switching on the additional electrical heater (71) and transferring the heat generated thereby via the second heat exchanger (30) from the heating circuit (60) to the source circuit (50).
    [2]
    2. Device (10) according to claim 1, characterized in that the control system (40) is set up with a first temperature sensor (53) in a source circuit flow (52) of the source circuit (50) and / or a second temperature sensor (55 ) to be connected in a source circuit return (54) of the source circuit (50).
    [3]
    The device (10) according to claim 2, characterized in that the control system (40) has a third control function for determining a target temperature of the source circuit return (54) based on, in particular only, a measured temperature in the source circuit supply (52) and one measured temperature in the source circuit return (54).
    [4]
    4. Device (10) according to one of the preceding claims, characterized in that the device has a further control function for diverting all heat from the heating circuit (60) in a start-up phase of the heat pump (70) to the source circuit (50).
    [5]
    Device (10) according to one of the preceding claims, characterized in that the device (10) has a circulating pump (22) in a line (25) which is connected to the first heat exchanger (20).
    [6]
    Device (10) according to one of the preceding claims, characterized in that the first heat exchanger (20), the second heat exchanger (30) and the control system (40) are arranged in a common housing (11).
    [7]
    7. Device (10) according to one of the preceding claims, characterized in that the device (10) is designed as a self-contained retrofit system for heat pump systems (80).
    [8]
    8. heat pump system (80) with a heat pump (70) and a device (10) for increasing the source temperature of a source (51) of the heat pump system (80) according to any one of claims 1 to 7, wherein the heat pump system (80) one with the heat pump (70) connected or connectable source circuit (50) with a source circuit return (54) and a source circuit flow (52) and a heating circuit (60) connected or connectable to the heat pump (70) with a heating circuit return (63) and a heating circuit flow (62), the source circuit (50) being connected to a source (51) or being designed to be connected to a source (51).
    [9]
    9. Heat pump system (80) according to claim 8, characterized in that the source circuit (50) is connected to an additional heat store.
    [10]
    10. Heat pump system (80) according to claim 9, characterized in that the device (10) has an additional control function for storing heat in the additional heat store and for subsequently giving this heat to the source system (50).
    类似技术:
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    同族专利:
    公开号 | 公开日
    AT16718U1|2020-07-15|
    DE202019101161U1|2019-04-02|
    引用文献:
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    US7210303B2|2003-12-04|2007-05-01|Carrier Corporation|Transcritical heat pump water heating system using auxiliary electric heater|
    DE102014008836B4|2013-11-04|2019-02-21|Hans-Georg Benken|Method and device for operating heat recovery systems with heat pump|
    AT516313B1|2014-06-20|2016-06-15|Hans-Georg Benken|Method and device for operating heat recovery systems with heat pump and heat exchanger|
    DE102014205030A1|2014-03-18|2015-09-24|MAHLE Behr GmbH & Co. KG|air conditioning|
    KR101626712B1|2015-02-23|2016-06-01|한밭대학교산학협력단|Constant-Temperature System with High Efficient Heat-Recovery|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE202019101161.0U|DE202019101161U1|2019-02-28|2019-02-28|Device for increasing a source temperature of a source of a heat pump and heat pump system with device|
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