CN213335038U - Heat pump unit and heat pump system - Google Patents
Heat pump unit and heat pump system Download PDFInfo
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- CN213335038U CN213335038U CN202022045498.7U CN202022045498U CN213335038U CN 213335038 U CN213335038 U CN 213335038U CN 202022045498 U CN202022045498 U CN 202022045498U CN 213335038 U CN213335038 U CN 213335038U
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Abstract
The utility model discloses a heat pump set and heat pump system. The heat pump unit comprises a compressor, a first heat exchanger, a throttling device, a second heat exchanger, a circulating water outlet interface and a circulating water return interface, wherein a first refrigerant pipe and a first heat exchange pipe are arranged in the first heat exchanger, and a second refrigerant pipe and a second heat exchange pipe are arranged in the second heat exchanger, and the heat pump unit further comprises: the waste heat recovery heat exchanger is provided with a third refrigerant pipe and a third heat exchange pipe, and the auxiliary heat exchanger is provided with a fourth heat exchange pipe and a fifth heat exchange pipe; the compressor, the first refrigerant pipe, the throttling device, the third refrigerant pipe and the second refrigerant pipe are connected together; the first heat exchange tube is connected between the fourth heat exchange tube and the fifth heat exchange tube, the second heat exchange tube is connected between the circulating water outlet interface and the water mixing tank, and the third heat exchange tube is connected between the fifth heat exchange tube and the water mixing tank. The energy consumption is reduced, the heat exchange efficiency is improved, and the operation stability of the heat pump system is improved.
Description
Technical Field
The utility model relates to a heat pump technical field especially relates to a heat pump set and heat pump system.
Background
At present, a heat pump system adopting a heat pump technology for heating is widely popularized and used due to environmental protection and low energy consumption. A heat pump heating system is generally configured with a refrigeration circuit and a user side radiator, where the refrigeration circuit includes a compressor, an evaporator, a throttling device, and a condenser connected together, and a refrigerant in the condenser is used to exchange heat with a heat exchange medium flowing into the user side radiator to meet a heating requirement. For example, chinese patent No. 2012104600138 discloses a heat pump heating system. However, in the actual use process, after the refrigerant in the condenser is exchanged with the heat exchange medium, the refrigerant contains more residual heat, which results in higher energy consumption; in addition, the temperature of the circulating water output from the evaporator is low and the circulating water directly enters the water heat exchange channel in the condenser, so that the load fluctuation of the condenser is large easily, and the stability of the refrigeration system is influenced. How to design a heat pump system that the energy consumption is low, heat exchange efficiency and operating stability are the utility model discloses the technical problem that will solve.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provided are a heat pump unit and a heat pump system, which can reduce energy consumption and improve heat exchange efficiency so as to improve the operation stability of the heat pump system.
The technical scheme that the utility model provides a, a heat pump set, including compressor, first heat exchanger, throttling arrangement, second heat exchanger, circulation play water interface and circulation return water interface, be provided with the first refrigerant pipe and the first heat exchange tube of interconversion in the first heat exchanger, be provided with the second refrigerant pipe and the second heat exchange tube of interconversion in the second heat exchanger, still include: the heat exchanger comprises a water mixing tank, a waste heat recovery heat exchanger and an auxiliary heat exchanger, wherein a third refrigerant pipe and a third heat exchange pipe which exchange heat with each other are arranged in the waste heat recovery heat exchanger, and the auxiliary heat exchanger is provided with a fourth heat exchange pipe and a fifth heat exchange pipe which exchange heat with each other;
the compressor, the first refrigerant pipe, the throttling device, the third refrigerant pipe and the second refrigerant pipe are connected together to form a refrigeration loop; the first heat exchange tube is connected between the fourth heat exchange tube and the fifth heat exchange tube, the second heat exchange tube is connected between the circulating water outlet interface and the water mixing tank, the third heat exchange tube is connected between the fifth heat exchange tube and the water mixing tank, and the circulating water return interface is respectively connected with the water mixing tank and the fourth heat exchange tube.
Furthermore, an auxiliary electric heater is arranged on a pipeline between the first heat exchange pipe and the fourth heat exchange pipe.
Furthermore, an auxiliary electric heater is arranged on a pipeline between the circulating water return interface and the fourth heat exchange pipe.
Further, a first electric flow regulating valve is arranged between the circulating water return interface and the water mixing tank.
Further, a second electric flow regulating valve is arranged between the third heat exchange pipe and the water mixing tank; or a third electric flow regulating valve is arranged between the circulating water return interface and the fourth heat exchange tube.
The utility model also provides a heat pump system, include: the circulating water pump and the radiator are connected together, and the heat pump unit is also included; the circulating water pump and the radiator are connected between a circulating water outlet interface and a circulating water return interface of the heat pump unit.
Compared with the prior art, the utility model discloses an advantage is with positive effect: the heat pump unit and the heat pump system provided by the utility model have the advantages that by adding the water mixing tank, the waste heat recovery heat exchanger and the auxiliary heat exchanger, the waste heat recovery heat exchanger can further utilize the heat of the refrigerant flowing out of the second heat exchanger to heat the heat exchange medium, so that the preheating of the refrigerant is fully utilized, and the heat exchange efficiency is improved; simultaneously, carry out the heat transfer to the heat transfer medium that first heat exchanger flowed in and flowed out between auxiliary heat exchanger, on the one hand can reduce the heat transfer medium temperature that flows in first heat exchanger, in order to avoid the high temperature and lead to the refrigerant in the first refrigerant pipe excessively to gasify and cause the refrigerant admission capacity of compressor excessively low and lead to the efficiency to reduce, on the other hand is to flowing out and exchanging heat each other between the heat transfer medium of inflow, in order to effectual recycle the heat of the heat transfer medium of inflow, and then more effectual improvement heat exchange efficiency, in order to improve heat pump system's operating stability.
Drawings
Fig. 1 is a schematic diagram of the heat pump system of the present invention.
Detailed Description
As shown in fig. 1, the heat pump system of the present embodiment includes a heat pump unit 100, a circulating water pump 300, and at least one radiator 200. Wherein, heat pump set 100 includes compressor 1, first heat exchanger 2, throttling arrangement 3, second heat exchanger 4, circulation water outlet 101 and circulation return water interface 102, is provided with interconversion's first refrigerant pipe 21 and first heat exchange tube 22 in the first heat exchanger 2, is provided with interconversion's second refrigerant pipe 41 and second heat exchange tube 42 in the second heat exchanger 4, and heat pump set 100 still includes: the mixed water tank 5, the waste heat recovery heat exchanger 6 and the auxiliary heat exchanger 7, wherein the waste heat recovery heat exchanger 6 is provided with a third refrigerant pipe 61 and a third heat exchange pipe 62 which exchange heat with each other, and the auxiliary heat exchanger 7 is provided with a fourth heat exchange pipe 71 and a fifth heat exchange pipe 72 which exchange heat with each other.
The compressor 1, the first refrigerant pipe 21, the throttling device 3, the third refrigerant pipe 61 and the second refrigerant pipe 41 are connected together to form a refrigeration loop; the first heat exchange tube 22 is connected between the fourth heat exchange tube 71 and the fifth heat exchange tube 72, the second heat exchange tube 42 is connected between the circulating water outlet 101 and the water mixing tank 5, the third heat exchange tube 62 is connected between the fifth heat exchange tube 72 and the water mixing tank 5, and the circulating water return interface 102 is connected with the water mixing tank 5 and the fourth heat exchange tube 71 respectively. In addition, the circulating water pump 300 and the radiator 200 are connected between the circulating water outlet interface 101 and the circulating water return interface 102.
In the actual use process, after entering the second heat exchanger 4 for heat exchange, the heat exchange medium is changed into a high-temperature heat exchange medium (generally at 45-55 degrees) and is output from the circulating water outlet 101, and flows into the radiator 200 under the action of the circulating water pump 300 to heat the room. The temperature of the cooled heat exchange medium flowing out of the radiator 200 is still high (generally about 40 ℃), so that the heat exchange medium flowing back to the circulating water return interface 102 is divided into two parts, one part flows into the water mixing tank 5, and the other part flows into the auxiliary heat exchanger 7.
The fourth heat exchange tube 71 in the auxiliary heat exchanger 7 conveys the heat exchange medium conveyed from the circulating water return interface 102 to the first heat exchanger 2, so as to realize that a relatively high-temperature heat exchange environment is manufactured for the first refrigerant tube 21 in the first heat exchanger 2, and the heat exchange medium flowing out of the first heat exchanger 2 is reduced in temperature (generally at 15-20 ℃) and flows into the fifth heat exchange tube 72 to exchange heat with the heat exchange medium in the fourth heat exchange tube 71. Therefore, on one hand, the temperature of the heat exchange medium output by the fourth heat exchange tube 71 is reduced, and further the refrigerant is prevented from being seriously gasified due to excessive heating of the first refrigerant tube 21; on the other hand, the temperature of the heat exchange medium output by the fifth heat exchange pipe 72 is increased (generally about 25 ℃), so that the heat of the heat exchange medium is fully utilized. The auxiliary heat exchanger 7 is configured, so that the heat of the heat exchange medium can be fully utilized on the premise of meeting the requirement of manufacturing the first heat exchanger 2 at the appropriate temperature, and the heat recovery utilization rate is improved. In addition, the heating temperature of the refrigerant in the first heat exchanger 2 is reasonable, and the phenomenon that the energy efficiency of the compressor 1 is reduced due to over-gasification is avoided.
Meanwhile, the temperature of the refrigerant, which is heat-exchanged and output from the second refrigerant pipe 41 in the second heat exchanger 4, is still high (generally about 60 degrees), in order to make full use of the residual heat of the refrigerant. The heat exchange medium output from the fifth heat exchange tube 72 enters the waste heat recovery heat exchanger 6, so that the heat exchange medium flowing through the third heat exchange tube 62 further absorbs the waste heat of the refrigerant flowing out of the second heat exchanger 4.
Like this, the heat transfer medium temperature of export in the follow third heat exchange tube 62 further promotes (generally about 30 degrees), but still is less than the heat transfer medium temperature that the circulation return water interface 102 carried, the heat transfer medium of export in the third heat exchange tube 62 enters into in the muddy water tank 5 will mix the back with the heat transfer medium of direct follow circulation return water interface 102 transport to make the heat transfer medium temperature of muddy water tank 5 output be less than the heat transfer medium temperature that the circulation return water interface 102 carried, and then increase the temperature between refrigerant and the heat transfer medium in second heat exchanger 4, and then more effective improvement heat exchange efficiency.
Further, in order to better start the heat pump system to reduce the starting difficulty and starting time, an auxiliary electric heater 8 is disposed on the pipeline between the first heat exchanging pipe 22 and the fourth heat exchanging pipe 71. Specifically, because the external environment temperature is lower in winter, and when the heat pump system starts for the first time, the temperature of the heat exchange medium flowing into the first heat exchanger 2 is lower, leading to the refrigerant in the first heat exchanger 2 being unable to be well heat-exchanged and gasified, and the heat exchange medium flowing into the first heat exchanger 2 is heated in an electric heating mode by adding the auxiliary electric heater 8, and then the compressor 1 is started, the ambient temperature of the first refrigerant pipe 21 is higher than the outdoor environment, so that the compressor 1 can be started quickly and efficiently. Meanwhile, after the compressor 1 is started, the auxiliary electric heater 8 is powered off, so that the compressor 1 is used for driving the refrigerant to circularly flow to heat the heat exchange medium. Thus, it is possible to avoid the temperature such as the slow heating efficiency at the initial stage of the start-up difficult heating of the compressor 1 due to the excessively low outdoor ambient temperature. Meanwhile, the auxiliary electric heater 8 can be arranged on a pipeline between the circulating water return interface 102 and the fourth heat exchange pipe 71. The auxiliary electric heater 8 may be an electric heating plate or an electric heating wire, which is not limited or described herein.
Furthermore, a first electric flow regulating valve 91 is arranged between the circulating water returning interface 102 and the water mixing tank 5. Specifically, the flow rate of the heat exchange medium directly flowing into the water mixing tank 5 from the circulating water returning interface 102 can be adjusted by the first electric flow adjusting valve 91. Similarly, a second electric flow-regulating valve 92 is arranged between the third heat exchange pipe 62 and the water mixing tank 5; or, a third electric flow regulating valve (not shown) is arranged between the circulating water return interface 102 and the fourth heat exchange pipe 71. Specifically, taking the example in which the second electric throttle valve 92 is provided between the third heat exchange pipe 62 and the water mixing tank 5, the opening degree of the first electric throttle valve 91 and/or the second electric throttle valve 92 is adjusted according to the return air temperature of the compressor 1. When the temperature of the return air of the compressor 1 is low, the opening degree of the first electric flow regulating valve 91 is reduced and the opening degree of the second electric flow regulating valve 92 is increased so as to increase the heat exchange medium entering the first heat exchanger 2 and ensure that enough heat heats the refrigerant in the first refrigerant pipe 21; on the contrary, the opening degree of the first electric flow regulating valve 91 is increased and the opening degree of the second electric flow regulating valve 92 is decreased to decrease the heat exchange medium entering the first heat exchanger 2, so that the waste heat of the heat exchange medium is reasonably and fully utilized.
The water mixing tank, the waste heat recovery heat exchanger and the auxiliary heat exchanger are additionally arranged, wherein the waste heat recovery heat exchanger can further utilize the heat of the refrigerant flowing out of the second heat exchanger to heat a heat exchange medium, so that the refrigerant is fully utilized for preheating, and the heat exchange efficiency is improved; simultaneously, carry out the heat transfer to the heat transfer medium that first heat exchanger flowed in and flowed out between auxiliary heat exchanger, on the one hand can reduce the heat transfer medium temperature that flows in first heat exchanger, in order to avoid the high temperature and lead to the refrigerant in the first refrigerant pipe excessively to gasify and cause the refrigerant admission capacity of compressor excessively low and lead to the efficiency to reduce, on the other hand is to flowing out and exchanging heat each other between the heat transfer medium of inflow, in order to effectual recycle the heat of the heat transfer medium of inflow, and then more effectual improvement heat exchange efficiency, in order to improve heat pump system's operating stability.
Claims (6)
1. The utility model provides a heat pump set, includes compressor, first heat exchanger, throttling arrangement, second heat exchanger, circulation play water interface and circulation return water interface, be provided with the first refrigerant pipe and the first heat exchange tube of interconversion in the first heat exchanger, be provided with the second refrigerant pipe and the second heat exchange tube of interconversion in the second heat exchanger, its characterized in that still includes: the heat exchanger comprises a water mixing tank, a waste heat recovery heat exchanger and an auxiliary heat exchanger, wherein a third refrigerant pipe and a third heat exchange pipe which exchange heat with each other are arranged in the waste heat recovery heat exchanger, and the auxiliary heat exchanger is provided with a fourth heat exchange pipe and a fifth heat exchange pipe which exchange heat with each other; the compressor, the first refrigerant pipe, the throttling device, the third refrigerant pipe and the second refrigerant pipe are connected together to form a refrigeration loop; the first heat exchange tube is connected between the fourth heat exchange tube and the fifth heat exchange tube, the second heat exchange tube is connected between the circulating water outlet interface and the water mixing tank, the third heat exchange tube is connected between the fifth heat exchange tube and the water mixing tank, and the circulating water return interface is respectively connected with the water mixing tank and the fourth heat exchange tube.
2. The heat pump unit according to claim 1, wherein an auxiliary electric heater is arranged on a pipeline between the first heat exchange pipe and the fourth heat exchange pipe.
3. The heat pump unit according to claim 1, wherein an auxiliary electric heater is arranged on a pipeline between the circulating water return interface and the fourth heat exchange pipe.
4. The heat pump unit of claim 1, wherein a first electric flow regulating valve is arranged between the circulating water return interface and the water mixing tank.
5. The heat pump unit according to claim 1, wherein a second electric flow regulating valve is arranged between the third heat exchange pipe and the water mixing tank; or a third electric flow regulating valve is arranged between the circulating water return interface and the fourth heat exchange tube.
6. A heat pump system, comprising: a circulating water pump and a radiator which are connected together, and is characterized by further comprising a heat pump unit according to any one of claims 1-5; the circulating water pump and the radiator are connected between a circulating water outlet interface and a circulating water return interface of the heat pump unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022045498.7U CN213335038U (en) | 2020-09-18 | 2020-09-18 | Heat pump unit and heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022045498.7U CN213335038U (en) | 2020-09-18 | 2020-09-18 | Heat pump unit and heat pump system |
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| CN213335038U true CN213335038U (en) | 2021-06-01 |
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| CN202022045498.7U Active CN213335038U (en) | 2020-09-18 | 2020-09-18 | Heat pump unit and heat pump system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI762426B (en) * | 2021-10-18 | 2022-04-21 | 世界先進積體電路股份有限公司 | Cold water circulation system |
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- 2020-09-18 CN CN202022045498.7U patent/CN213335038U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI762426B (en) * | 2021-10-18 | 2022-04-21 | 世界先進積體電路股份有限公司 | Cold water circulation system |
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