Cold and hot double-effect heat pump system

Abstract

The invention discloses a cold and hot double-effect heat pump system, and relates to the field of heat pump equipment, in particular to a cold and hot double-effect energy-saving heat pump. The system comprises a refrigerant circulation loop, a hot liquid flow path and a cold liquid flow path. The refrigerant circulation loop comprises a refrigerant circulation loop formed by sequentially connecting a compressor, an auxiliary condenser assembly, a condenser assembly, a drying filter, a throttling device, an evaporator assembly and a gas-liquid separator. According to the hot liquid flow path, to-be-heated liquid enters a second liquid coil pipe of the condenser assembly through a hot liquid water return opening of the condenser assembly, and flows out of a hot liquid outlet of the condenser assembly after being heated through heat exchange. According to the cold liquid flow path, liquid to be cooled enters a second liquid coil pipe of the evaporator assembly through a cold liquid water return opening of the evaporator assembly, and flows out of a cold liquid outlet of the evaporator assembly after being cooled through heat exchange. According to the system, a heat source and a cold source are provided, cold is collected while hot water is produced, or heat is collected while cold water is produced. Therefore, energy is fully utilized, energy consumption is reduced, cost is reduced, cold water and hot water can be conveniently used at the same time, and the characteristics of dual purposes of one machine, double effects of cold water and hot water, energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The invention relates to the field of heat pump equipment, in particular to a cooling and heating dual-effect energy-saving heat pump system. Background Art

[0002] Heat pump technology is a new energy technology that has attracted much attention worldwide in recent years. The familiar "pump" is a mechanical device that can increase potential energy, such as a water pump that mainly pumps water from a low level to a high level. A "heat pump" is a device that can obtain low-level heat energy from the air, water or soil in nature, and provide high-level heat energy that can be used by people through electrical energy.

[0003] The current heat pump technology produces cold or hot water by absorbing or emitting energy into the surrounding air. At present, the existing heat pump systems on the market only produce hot water or cold water when working. There is no breakthrough technology that produces hot water while collecting cold water, that is, producing cold water at the same time, or vice versa, collecting heat while producing cold water, that is, producing hot water at the same time. Therefore, so far, there is no perfect circulation equipment on the market that can produce hot and cold water at the same time. Summary of the invention

[0004] In order to overcome the defects in the prior art, the embodiments of the present invention provide a dual-effect heat pump system for producing hot liquid and cold liquid at the same time.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a double-effect heat pump system, comprising a refrigerant circulation circuit, a hot liquid flow path and a cold liquid flow path; The refrigerant circulation circuit comprises a refrigerant circulation circuit formed by sequentially connecting a compressor, an auxiliary condenser assembly, a condenser assembly, a drying filter, a throttling device, an evaporator assembly, and a gas-liquid separator; The hot liquid flow path is that the liquid to be heated enters the second liquid coil of the condenser assembly through the hot liquid return port of the condenser assembly, and flows out from the hot liquid outlet of the condenser assembly after being heated by heat exchange.

[0006] The cold liquid flow path is for the liquid to be cooled to enter the second liquid coil of the evaporator component through the cold liquid return port of the evaporator component, and then flow out from the cold liquid outlet of the evaporator component after cooling through heat exchange. Preferably, the condenser assembly comprises a shell, a refrigerant coil, a second liquid coil and an antifreeze heat storage coolant filled inside.

[0007] Preferably, the refrigerant enters from the refrigerant inlet at the upper part of the condenser assembly and flows out from the refrigerant outlet at the lower part of the condenser assembly; the liquid to be heated enters from the hot liquid return port at the lower part of the condenser assembly and flows out from the hot liquid outlet at the upper part of the condenser assembly.

[0008] Preferably, the evaporator assembly comprises a shell, a refrigerant coil, a second liquid coil and an antifreeze and cold storage coolant filled inside.

[0009] Preferably, the refrigerant enters from the refrigerant inlet at the lower part of the evaporator assembly and flows out from the refrigerant outlet at the upper part of the evaporator assembly; the liquid to be cooled enters from the cold liquid return port at the upper part of the evaporator assembly and flows out from the cold liquid outlet at the lower part of the evaporator assembly.

[0010] Preferably, the auxiliary condenser assembly is provided between the compressor and the condenser assembly, and the auxiliary condenser assembly is composed of a micro-fin heat exchanger and a fan.

[0011] Preferably, auxiliary electric heating is added at the lower position of the condenser assembly.

[0012] Due to the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art: A compressor, a condenser assembly and an evaporator assembly are used to collect cold water while producing hot liquid, or to collect heat while producing cold liquid to produce hot liquid. At the same time, the imbalance of heat exchange in the system is balanced by starting and stopping the micro condenser to improve system efficiency. In this way, energy is fully utilized, energy consumption is reduced, costs are reduced, and the simultaneous use of hot and cold water is facilitated, realizing the first integrated heat pump hot and cold water machine.

[0013] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of a dual-effect heat pump system in an embodiment of the present invention.

[0017] The figure markings of the above drawings are: 1. compressor; 2. auxiliary condenser assembly; 3. condenser assembly; 31. hot liquid return port; 32. hot liquid outlet; 4. drying filter; 5. throttling device; 6. evaporator assembly; 61. cold liquid return port; 62. cold liquid outlet; 7. gas-liquid separator. Implementation

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1: See Figure 1 As shown, a dual-effect heat pump system for detecting heat and cooling, characterized in that it includes a refrigerant circulation circuit, a hot liquid flow path and a cold liquid flow path; The refrigerant circulation circuit comprises a refrigerant circulation circuit formed by connecting a compressor 1, an auxiliary condenser assembly 2, a condenser assembly 3, a drying filter 4, a throttling device 5, an evaporator assembly 6, and a gas-liquid separator 7 in sequence; The hot liquid flow path is that the liquid to be heated enters the second liquid coil of the condenser assembly 3 through the hot liquid return port 31 of the condenser assembly 3, and flows out from the hot liquid outlet 32 ​​of the condenser assembly 3 after being heated by heat exchange.

[0020] The cold liquid flow path is that the liquid to be cooled enters the second liquid coil of the evaporator assembly 6 through the cold liquid return port 61 of the evaporator assembly 6, and flows out from the cold liquid outlet 62 of the evaporator assembly 6 after being cooled by heat exchange.

[0021] The condenser assembly comprises a shell, a refrigerant coil, a second liquid coil and an antifreeze heat storage coolant filled inside.

[0022] The refrigerant enters from the refrigerant inlet at the upper part of the condenser assembly and flows out from the refrigerant outlet at the lower part of the condenser assembly; the liquid to be heated enters from the hot liquid return port at the lower part of the condenser assembly and flows out from the hot liquid outlet at the upper part of the condenser assembly.

[0023] The evaporator assembly comprises a shell, a refrigerant coil, a second liquid coil and an antifreeze and cold storage coolant filled inside.

[0024] The refrigerant enters from the refrigerant inlet at the lower part of the evaporator assembly and flows out from the refrigerant outlet at the upper part of the evaporator assembly; the liquid to be cooled enters from the cold liquid return port at the upper part of the evaporator assembly and flows out from the cold liquid outlet at the lower part of the evaporator assembly.

[0025] The auxiliary condenser assembly is arranged between the compressor and the condenser assembly, and the auxiliary condenser assembly is composed of a micro-fin heat exchanger and a fan.

[0026] Auxiliary electric heating is added at the lower position of the condenser assembly.

[0027] The operation method of the dual-effect heat pump system includes the following contents: Hot and cold dual effect mode: First, the compressor 1 compresses the refrigerant to form a refrigerant with a raised temperature after compression. The high-temperature refrigerant flows through the refrigerant coil in the condenser assembly 3 to release heat, causing the antifreeze heat storage coolant in the condenser assembly 3 to heat up. The refrigerant after heat exchange passes through the drying filter 4 and enters the throttling device 5 to become a low-temperature and low-pressure refrigerant and directly flows into the refrigerant coil in the evaporator assembly 6. The low-temperature and low-pressure refrigerant absorbs heat to cool the antifreeze heat storage coolant in the evaporator assembly 6. The low-temperature and low-pressure refrigerant flows through the gas-liquid separator 7, and finally the refrigerant returns to the compressor 1.

[0028] The liquid to be heated enters the second liquid coil of the condenser assembly 3 through the hot liquid return port 31 of the condenser assembly 3, and flows out from the hot liquid outlet 32 ​​of the condenser assembly 3 after being heated by heat exchange with the antifreeze heat storage refrigerant in the condenser assembly 3.

[0029] The liquid to be cooled enters the second liquid coil of the evaporator assembly 6 through the cold liquid return port 61 of the evaporator assembly 6, and flows out from the cold liquid outlet 62 of the evaporator assembly 6 after being cooled by heat exchange with the antifreeze and cold storage refrigerant in the evaporator assembly 6.

[0030] When the system is mainly producing hot liquid and supplemented by cold storage, the system operates as above.

[0031] When the system is mainly used to produce cold nights and supplemented by heat storage, when the temperature of the condenser assembly reaches the set temperature, the fan of the auxiliary condenser assembly 2 arranged between the compressor 1 and the condenser assembly 3 is turned on to supercool the refrigerant to balance the imbalance of heat exchange in the system and improve system efficiency.

[0032] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A dual-effect heat pump system, characterized in that: It includes a refrigerant circulation circuit, a hot liquid flow path and a cold liquid flow path; The refrigerant circulation circuit comprises a refrigerant circulation circuit formed by sequentially connecting a compressor, a subcooler assembly, a condenser assembly, a drying filter, a throttling device, an evaporator assembly, and a gas-liquid separator; The hot liquid flow path is that the liquid to be heated enters the second liquid coil of the condenser assembly through the hot liquid return port of the condenser assembly, and flows out from the hot liquid outlet of the condenser assembly after being heated by heat exchange; The cold liquid flow path is for the liquid to be cooled to enter the second liquid coil of the evaporator assembly through the cold liquid return port of the evaporator assembly, and to flow out from the cold liquid outlet of the evaporator assembly after being cooled by heat exchange.

2. A dual-effect heat pump system according to claim 1, characterized in that: The condenser assembly comprises a shell, a refrigerant coil, a second liquid coil and an antifreeze heat storage coolant filled inside.

3. A dual-effect heat pump system according to claim 1, characterized in that: The refrigerant enters from the refrigerant inlet at the upper part of the condenser assembly and flows out from the refrigerant outlet at the lower part of the condenser assembly; the liquid to be heated enters from the hot liquid return port at the lower part of the condenser assembly and flows out from the hot liquid outlet at the upper part of the condenser assembly.

4. A dual-effect heat pump system according to claim 1, characterized in that: The evaporator assembly comprises a shell, a refrigerant coil, a second liquid coil and an antifreeze and cold storage coolant filled inside.

5. A dual-effect heat pump system according to claim 1, characterized in that: The refrigerant enters from the refrigerant inlet at the lower part of the evaporator assembly and flows out from the refrigerant outlet at the upper part of the evaporator assembly; the liquid to be cooled enters from the cold liquid return port at the upper part of the evaporator assembly and flows out from the cold liquid outlet at the lower part of the evaporator assembly.

6. A dual-effect heat pump system according to claim 1, characterized in that: The auxiliary condenser assembly is arranged between the compressor and the condenser assembly, and the auxiliary condenser assembly is composed of a micro-fin heat exchanger and a fan.

7. A dual-effect heat pump system according to claim 1, characterized in that: Auxiliary electric heating is added at the lower position of the condenser assembly.

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