Double-temperature-zone heat pump control system

Abstract

The utility model provides a double-temperature-zone heat pump control system, which comprises a compressor, a heat pump, a temperature sensor and a controller, the heat exchanger is provided with a first heat exchange channel and a second heat exchange channel; the inflow end of a medium channel of the first condenser communicates with an exhaust port of the compressor, and the outflow end of the medium channel of the first condenser communicates with the inflow end of the first heat exchange channel; the inflow end of a medium channel of the second condenser communicates with the outflow end of the first heat exchange channel, the outflow end of the medium channel of the second condenser communicates with the inflow end of the second heat exchange channel through a first throttling device, and the outflow end of the second heat exchange channel communicates with an air inlet of the compressor through an evaporation assembly. The utility model provides a double-temperature-zone heat pump control system which can stably realize the temperature control of double temperature zones, can enable the temperature of the two temperature zones to be different, and can ensure the stability of temperature regulation and control.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a dual-temperature zone heat pump control system. Background Art

[0002] Conventional single compressor heat pump systems can only achieve one condensing temperature output for hot air or hot water. Even if two condensers are used, the condensing temperatures of the two condensers are relatively close, making it difficult to achieve dual-temperature zone control.

[0003] Some patents of dual-zone heat pumps are also disclosed in the prior art, such as the application number: 201720478955.7, the patent name is a single-unit dual-zone heat pump water heater, including a waste heat recovery system, a water circulation system, a heat pump circulation system, and a heat exchange system for respectively realizing heat exchange between the waste heat recovery system, the water circulation system and the heat pump circulation system. In this scheme, the water in the low-temperature zone is first heated, and then the water in the low-temperature zone flows into the high-temperature zone for secondary heating, thereby realizing the control of the dual temperature zones. However, in this scheme, the two temperature zones are connected, which increases the efficiency of the heat exchange between the two temperature zones, making it inconvenient to perform stable temperature control of the two temperature zones.

[0004] Therefore, a solution that can stably regulate the two temperature zones is needed to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes a dual-temperature zone heat pump control system, which can stably realize the temperature control of the dual temperature zones and can differentiate the temperatures of the two temperature zones. Among them, the first temperature zone and the second temperature zone are in an isolated relationship, and the temperature of the first temperature zone is only affected by the first condenser; the temperature of the second temperature zone is only affected by the second condenser. The first condenser in this scheme realizes the heating of the first temperature zone, and the first condenser realizes the heating of the second temperature zone. Since the first condenser and the second condenser are arranged in series, in order to ensure the differentiation of the heating temperature, a heat exchanger is arranged between the first condenser and the second condenser. The heat exchanger is used to perform heat exchange on the medium flowing out of the first condenser, so that the temperature of the medium flowing into the second condenser changes, thereby realizing the difference in temperature between the first temperature zone and the second temperature zone, and the stability of temperature control can be ensured.

[0006] Specifically, the utility model proposes a dual-temperature zone heat pump control system, comprising:

[0007] a compressor having an air inlet and an air outlet;

[0008] A heat exchanger having a first heat exchange channel and a second heat exchange channel;

[0009] a first condenser, wherein an inflow end of a medium channel of the first condenser is connected to an exhaust port of the compressor, and an outflow end of a medium channel of the first condenser is connected to an inflow end of the first heat exchange channel;

[0010] The second condenser, the inlet end of the medium channel of the second condenser is connected to the outlet end of the first heat exchange channel, the outlet end of the medium channel of the second condenser is connected to the inlet end of the second heat exchange channel through the first throttling device, and the outlet end of the second heat exchange channel is connected to the air inlet of the compressor through the evaporation component.

[0011] Preferably, a liquid storage tank is provided between the evaporation component and the outflow end of the second heat exchange channel.

[0012] Preferably, an outlet pipe is provided on the outflow end of the medium channel of the second condenser, and the outlet pipe is connected to the inflow end of the second heat exchange channel through a first branch pipe, and a first solenoid valve and a first throttling device are provided on the first branch pipe.

[0013] Preferably, the outflow end of the second heat exchange channel is connected to the liquid storage tank via a one-way valve.

[0014] Preferably, the outlet pipe is connected to the liquid storage tank via a second branch pipe, and a second solenoid valve is provided on the second branch pipe.

[0015] Preferably, the evaporation component includes an evaporator and a flash tank, the inlet end of the flash tank is connected to the outlet end of the liquid storage tank through a first pipeline, the flash tank is connected to the inlet end of the medium channel of the evaporator through a second pipeline, and the outlet end of the medium channel of the evaporator is used to be connected to the air inlet of the compressor.

[0016] Preferably, the second pipeline is plugged into the bottom of the cavity of the flash tank.

[0017] Preferably, a gas-liquid separator is provided between the outflow end of the medium channel of the evaporator and the air inlet of the compressor.

[0018] Preferably, the flash tank is connected to the air supply port of the compressor via a third pipeline, and a third solenoid valve is provided on the third pipeline.

[0019] Preferably, the third pipeline is plugged into the top of the cavity of the flash tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required to be used in the embodiments or the description of the prior art will be briefly introduced below.

[0021] Figure 1Schematic diagram of the structure of the dual-temperature zone heat pump control system proposed in this embodiment.

[0022] The reference numerals in the accompanying drawings are as follows:

[0023] 11-compressor; 12-heat exchanger; 13-first condenser; 14-second condenser; 15-first throttling device; 16-liquid storage tank; 17-lead-out pipe; 18-first branch pipe; 19-first solenoid valve; 20-check valve; 21-second branch pipe; 22-second solenoid valve; 23-evaporator; 24-flash tank; 25-first pipeline; 26-second pipeline; 27-gas-liquid separator; 28-third pipeline; 29-third solenoid valve; 30-second throttling device; 31-first temperature zone; 32-second temperature zone. DETAILED DESCRIPTION

[0024] The technical solution of the present application is further described below in conjunction with specific embodiments, but the present application is not limited to these embodiments.

[0025] like Figure 1 As shown, this embodiment proposes a dual-temperature zone heat pump control system, including:

[0026] A compressor 11, wherein the compressor 11 has an air inlet and an air outlet;

[0027] The heat exchanger 12 has a first heat exchange channel and a second heat exchange channel; wherein the first heat exchange channel and the second heat exchange channel are not marked in the drawings.

[0028] A first condenser 13, wherein an inflow end of a medium channel of the first condenser 13 is connected to an exhaust port of the compressor 11, and an outflow end of the medium channel of the first condenser 13 is connected to an inflow end of the first heat exchange channel;

[0029] The second condenser 14, the inlet end of the medium channel of the second condenser 14 is connected to the outlet end of the first heat exchange channel, the outlet end of the medium channel of the second condenser 14 is connected to the inlet end of the second heat exchange channel through the first throttling device 15, and the outlet end of the second heat exchange channel is connected to the air inlet of the compressor 11 through the evaporation component.

[0030] The technical effect of this solution is that it can stably realize the temperature control of the dual temperature zones and can differentiate the temperatures of the two temperature zones.

[0031] In this solution, the first temperature zone 31 and the second temperature zone 32 are isolated from each other. The temperature of the first temperature zone 31 is only affected by the first condenser 13 , and the temperature of the second temperature zone 32 is only affected by the second condenser 14 .

[0032] The first condenser 13 in this solution realizes heating of the first temperature zone 31, and the first condenser 13 realizes heating of the second temperature zone 32. Since the first condenser 13 and the second condenser 14 are arranged in series, in order to ensure the difference in heating temperature, a heat exchanger 12 is arranged between the first condenser 13 and the second condenser 14. The heat exchanger 12 is used to perform heat exchange on the medium flowing out of the first condenser 13, so that the temperature of the medium flowing into the second condenser 14 is changed, thereby realizing the difference in temperature between the first temperature zone 31 and the second temperature zone 32, and ensuring the stability of temperature control.

[0033] Furthermore, a liquid storage tank 16 is provided between the evaporation component and the outflow end of the second heat exchange channel.

[0034] As an implementation mode of this embodiment, an outlet pipe 17 is provided on the outflow end of the medium channel of the second condenser 14, and the outlet pipe 17 is connected to the inflow end of the second heat exchange channel through a first branch pipe 18, and the first branch pipe 18 is provided with a first solenoid valve 19 and a first throttling device 15.

[0035] In this solution, the flow rate of the medium in the heat exchanger 12 is adjusted by adjusting the first throttling device 15 , thereby adjusting the temperature difference between the first temperature zone 31 and the second temperature zone 32 .

[0036] As an implementation of this embodiment, the outflow end of the second heat exchange channel is connected to the liquid storage tank 16 via a one-way valve 20. In this solution, the one-way valve 20 is provided to prevent the medium from flowing back.

[0037] As an implementation mode of this embodiment, the outlet pipe 17 is connected to the liquid storage tank 16 through a second branch pipe 21 , and a second solenoid valve 22 is provided on the second branch pipe 21 .

[0038] When the first solenoid valve 19 is closed and the second solenoid valve 22 is opened, the medium flowing out of the second condenser 14 directly flows into the liquid storage tank 16 to keep the first temperature zone 31 and the second temperature zone 32 at the same target temperature.

[0039] As an implementation mode of this embodiment, the evaporation component includes an evaporator 23 and a flash tank 24, the inlet end of the flash tank 24 is connected to the outlet end of the liquid storage tank 16 through a first pipeline 25, the flash tank 24 is connected to the inlet end of the medium channel of the evaporator 23 through a second pipeline 26, and the outlet end of the medium channel of the evaporator 23 is used to connect to the air inlet of the compressor 11.

[0040] Furthermore, a second throttling device 30 is provided on the second pipeline 26 .

[0041] As an implementation of this embodiment, the second pipeline 26 is plugged into the bottom of the cavity of the flash tank 24. This solution is used to allow the liquid medium in the flash tank 24 to flow into the evaporator 23 through the second pipeline 26 and the second throttling device 30.

[0042] As an implementation of this embodiment, a gas-liquid separator 27 is provided between the outflow end of the medium channel of the evaporator 23 and the air inlet of the compressor 11. The medium flowing out of the evaporator 23 flows into the compressor 11 through the gas-liquid separator 27, which can prevent the liquid medium from flowing into the compressor 11, thereby ensuring the stability of the operation of the compressor 11.

[0043] As an implementation of this embodiment, the flash tank 24 is connected to the air supply port of the compressor 11 through a third pipeline 28, and a third solenoid valve 29 is provided on the third pipeline 28. Further, the third pipeline 28 is plugged into the top of the cavity of the flash tank 24.

[0044] When the air intake of the compressor 11 is insufficient, the third solenoid valve 29 is opened to supply air to the air supply port of the compressor 11 through the third pipeline 28 , so that the compressor 11 can work stably.

[0045] The working process of the dual-zone heat pump control system in this scheme is as follows:

[0046] When the first temperature zone 31 and the second temperature zone 32 are set to the same target temperature, the first solenoid valve 19 is closed and the second solenoid valve 22 is opened. After the refrigerant comes out of the second condenser 14, it enters the liquid storage tank 16 through the second solenoid valve 22. At this time, no refrigerant flows through the right channel of the intermediate heat exchanger 12.

[0047] When the target temperature of the second temperature zone 32 needs to be lower than that of the first temperature zone 31, the first solenoid valve 19 is opened and the second solenoid valve 22 is closed. The flow rate and temperature of the refrigerant entering the heat exchanger 12 are controlled by adjusting the opening of the first throttling device 15, thereby controlling the condensation temperature difference between the second condenser 14 and the first condenser 13, thereby achieving the purpose of making the output temperature of the second temperature zone 32 lower than that of the first temperature zone 31.

[0048] For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the utility model, which all fall within the protection scope of the utility model.

Claims

1. A dual-temperature zone heat pump control system, characterized in that: include: A compressor (11), the compressor (11) having an air inlet and an air outlet; A heat exchanger (12), wherein the heat exchanger (12) has a first heat exchange channel and a second heat exchange channel; A first condenser (13), wherein an inflow end of a medium channel of the first condenser (13) is connected to an exhaust port of the compressor (11), and an outflow end of the medium channel of the first condenser (13) is connected to an inflow end of the first heat exchange channel; A second condenser (14), wherein the inlet end of the medium channel of the second condenser (14) is connected to the outlet end of the first heat exchange channel, the outlet end of the medium channel of the second condenser (14) is connected to the inlet end of the second heat exchange channel via a first throttling device (15), and the outlet end of the second heat exchange channel is connected to the air inlet of the compressor (11) via an evaporation component.

2. The dual-temperature zone heat pump control system according to claim 1, characterized in that: A liquid storage tank (16) is provided between the evaporation component and the outflow end of the second heat exchange channel.

3. The dual-temperature zone heat pump control system according to claim 2, characterized in that: An outlet pipe (17) is provided at the outlet end of the medium channel of the second condenser (14), and the outlet pipe (17) is connected to the inlet end of the second heat exchange channel through a first branch pipe (18), and the first branch pipe (18) is provided with a first solenoid valve (19) and a first throttling device (15).

4. The dual-temperature zone heat pump control system according to claim 3, characterized in that: The outflow end of the second heat exchange channel is connected to the liquid storage tank (16) via a one-way valve (20).

5. The dual-temperature zone heat pump control system according to claim 3 or 4, characterized in that: The outlet pipe (17) is connected to the liquid storage tank (16) via a second branch pipe (21), and a second solenoid valve (22) is provided on the second branch pipe (21).

6. The dual-temperature zone heat pump control system according to claim 2, characterized in that: The evaporation assembly comprises an evaporator (23) and a flash tank (24); the inflow end of the flash tank (24) is connected to the outflow end of the liquid storage tank (16) via a first pipeline (25); the flash tank (24) is connected to the inflow end of the medium channel of the evaporator (23) via a second pipeline (26); the outflow end of the medium channel of the evaporator (23) is used to connect to the air inlet of the compressor (11).

7. The dual-temperature zone heat pump control system according to claim 6, characterized in that: The second pipeline (26) is plugged into the bottom of the cavity of the flash tank (24).

8. The dual-temperature zone heat pump control system according to claim 6, characterized in that: A gas-liquid separator (27) is provided between the outflow end of the medium channel of the evaporator (23) and the air inlet of the compressor (11).

9. The dual-temperature zone heat pump control system according to claim 6, characterized in that: The flash tank (24) is connected to the air supply port of the compressor (11) via a third pipeline (28), and a third solenoid valve (29) is provided on the third pipeline (28).

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