Multifunctional heat pump heating unit

Abstract

The utility model discloses a multifunctional heat pump heating unit which comprises a compressor, a four-way valve, a heat exchanger, a hot water tank, a liquid storage tank, an electronic expansion valve and an evaporator, an output port of the compressor is communicated with an inlet of the four-way valve, a port A of the four-way valve is communicated with a three-way valve, one outlet of the three-way valve is communicated with a refrigerant inlet of the heat exchanger, and the other outlet of the three-way valve is communicated with a refrigerant outlet of the liquid storage tank. A refrigerant outlet of the heat exchanger and an outlet of the condenser are respectively communicated with the inside of the liquid storage tank, an output port of the liquid storage tank is communicated with an inlet of the electronic expansion valve, an outlet of the electronic expansion valve is communicated with an inlet of the evaporator, and a fan is arranged on one side of the evaporator. An outlet of the evaporator is communicated with a C port of the four-way valve, and a B port of the four-way valve is communicated with a backflow port of the compressor. By the adoption of the technical scheme, the technical problem that an existing pump heating unit is only provided with a heat exchanger to supply hot water for heat supply and cannot supply hot water for heat supply after the heat exchanger goes wrong is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump heating, in particular to a multifunctional heat pump heating unit. Background Art

[0002] The existing heat pump heating units generally use one heat exchanger for heat exchange. As shown in the structure of the specification appendix Figure 1 The refrigerant (high temperature) output by the compressor 1 enters from the refrigerant inlet of the plate heat exchanger 3 through the four-way valve 2 and exits from the refrigerant outlet (the refrigerant exchanges heat in the plate heat exchanger, and the normal temperature water enters the plate heat exchanger through the water inlet for internal heat exchange and exits as the heated water through the water outlet). The refrigerant output from the plate heat exchanger 3 passes through the electronic expansion valve 6 and the evaporator 7, then enters the four-way valve 2 and returns to the compressor 1. When a problem occurs in the heat exchanger of this kind of heat pump heating unit, it cannot be used. Therefore, how to design a multifunctional heat pump heating unit that can achieve multiple heat exchange structures has become an urgent technical problem to be solved. Summary of the Utility Model

[0003] In order to overcome the existing technical defects, the purpose of the utility model is to provide a multifunctional heat pump heating unit to solve the above technical problems.

[0004] The technical solution adopted by the utility model to solve the technical problems is as follows:

[0005] According to one aspect of the utility model, a multifunctional heat pump heating unit is designed, including: a compressor, a four-way valve, a heat exchanger, a hot water tank, a liquid storage tank, an electronic expansion valve, and an evaporator. The output port of the compressor is connected to the inlet of the four-way valve through a pipeline. The A port of the four-way valve is connected to a three-way valve through a pipeline. One of the outlets of the three-way valve is connected to the refrigerant inlet of the heat exchanger through a pipeline, and the other outlet is connected to the inlet of the condenser provided on the hot water tank through a pipeline. The refrigerant outlet of the heat exchanger and the outlet of the condenser are respectively connected to the inside of the liquid storage tank through pipelines. The output port of the liquid storage tank is connected to the inlet of the electronic expansion valve through a pipeline. The outlet of the electronic expansion valve is connected to the inlet of the evaporator through a pipeline. A blower is provided on one side of the evaporator. The outlet of the evaporator is connected to the C port of the four-way valve through a pipeline. The B port of the four-way valve is connected to the return port of the compressor through a pipeline.

[0006] With the above technical solution, the first mode of this heat pump heating unit is as follows: The refrigerant output by the compressor passes through the four-way valve, three-way valve, heat exchanger, liquid storage tank, electronic expansion valve, and evaporator, and then enters the four-way valve and returns to the compressor. Heat exchange is carried out through the heat exchanger to supply hot water for heating. The second mode is: The refrigerant output by the compressor passes through the four-way valve, three-way valve, condenser on the hot water tank, liquid storage tank, electronic expansion valve, and evaporator, and then enters the four-way valve and returns to the compressor. Heat exchange is carried out between the condenser and the water in the hot water tank to supply hot water for heating. The third mode is: The refrigerant output by the compressor passes through the four-way valve and three-way valve. Then, a part passes through the heat exchanger and enters the liquid storage tank, and another part passes through the condenser on the hot water tank and enters the liquid storage tank. Then, the refrigerant passes through the electronic expansion valve and evaporator, and then enters the four-way valve and returns to the compressor. Heat exchange is carried out through the heat exchanger and heat exchange is carried out between the condenser and the water in the hot water tank. The two paths are used to supply hot water for heating. Thus, multiple modes can be used to supply hot water for heating. When the heat exchanger has problems, heat exchange can be carried out through the condenser and the hot water tank structure to supply hot water for heating, solving the technical problem that the existing pump heating unit only uses the heat exchanger to supply hot water for heating and cannot supply hot water for heating when the heat exchanger has problems.

[0007] In order to better solve the above technical defects, the present utility model also has a better technical solution:

[0008] In some embodiments, a first solenoid valve is connected and communicated on the pipeline between the heat exchanger and the liquid storage tank, and a second solenoid valve is connected and communicated on the pipeline between the condenser and the liquid storage tank.

[0009] In some embodiments, a first solenoid valve is connected and communicated on the pipeline between the heat exchanger and the three-way valve, and a second solenoid valve is connected and communicated on the pipeline between the condenser and the three-way valve.

[0010] In some embodiments, the condenser is constituted by an annular heat exchange tube arranged on the outer side wall or inside of the hot water tank.

[0011] In some embodiments, the heat exchanger is a plate heat exchanger.

[0012] In some embodiments, the heat exchanger is a surface heat exchanger or a mixing heat exchanger or a regenerative heat exchanger. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the current heating unit;

[0014] Figure 2 It is a schematic structural diagram of a multifunctional heat pump heating unit according to an embodiment provided by the present utility model;

[0015] Reference Signs:

[0016] 1. Compressor; 2. Four-way valve; 3. Heat exchanger; 4. Hot water tank; 41. Condenser; 5. Liquid storage tank; 6. Electronic expansion valve; 7. Evaporator; 71. Fan; 8. Three-way valve; 91. First solenoid valve; 92. Second solenoid valve. Detailed implementation manners

[0017] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the detailed implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0018] In the description of the present utility model, it should be understood that for the orientation descriptions, such as up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0019] Words such as connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0020] Reference Figure 2 As shown, a multifunctional heat pump heating unit provided by the present utility model includes: a compressor 1, a four-way valve 2, a heat exchanger 3, a hot water tank 4, a liquid storage tank 5, an electronic expansion valve 6, and an evaporator 7. A condenser 41 is provided on the hot water tank 4. Among them, the outer wall of the hot water tank 4 or the annular heat exchange tube provided inside constitutes the condenser 41. The hot water tank 4 is used to receive and store normal temperature water and output the hot water generated after heat exchange.

[0021] The output port of the compressor 1 is connected to the inlet of the four-way valve 2 through a pipeline. The A port of the four-way valve 2 is connected to the three-way valve 8 through a pipeline. One of the outlets on the three-way valve 8 is connected to the refrigerant inlet of the heat exchanger 3 through a pipeline. The other outlet on the three-way valve 8 is connected to the inlet of the condenser 41 provided on the hot water tank 4 through a pipeline. The refrigerant outlet of the heat exchanger 3 and the outlet of the condenser 41 are respectively connected to the inside of the liquid storage tank 5 through pipelines. The output port of the liquid storage tank 5 is connected to the inlet of the electronic expansion valve 6 through a pipeline. The outlet of the electronic expansion valve 6 is connected to the inlet of the evaporator 7 through a pipeline. A fan 71 is provided on one side of the evaporator 7. The outlet of the evaporator 7 is connected to the C port of the four-way valve 2 through a pipeline. The B port of the four-way valve 2 is connected to the return port of the compressor 1 through a pipeline. The three-way valve 8 is a manual three-way valve or an electromagnetic three-way valve

[0022] A first electromagnetic valve 91 is connected and communicated on the pipeline between the heat exchanger 3 and the liquid storage tank 5 or on the pipeline between the heat exchanger 3 and the three-way valve 8. In this embodiment, it is preferably that the first electromagnetic valve 91 is connected and communicated on the pipeline between the heat exchanger 3 and the liquid storage tank 5. A second electromagnetic valve 92 is connected and communicated on the pipeline between the condenser 41 and the liquid storage tank 5 or on the pipeline between the condenser 41 and the three-way valve 8. In this embodiment, it is preferably that the second electromagnetic valve 92 is connected and communicated on the pipeline between the condenser 41 and the liquid storage tank 5.

[0023] The heat exchanger 3 is a plate heat exchanger, a surface heat exchanger, a hybrid heat exchanger or a regenerative heat exchanger. In this embodiment, it is preferably that the heat exchanger 3 is a plate heat exchanger.

[0024] It also includes a conventional control circuit board, which is electrically connected to components such as the compressor, the first electromagnetic valve, the second electromagnetic valve, and the fan to control the start and stop of each component.

[0025] In the first mode of this heat pump heating unit: the refrigerant output by the compressor 1 passes through the four-way valve 2, the three-way valve 8, the heat exchanger 3, the first electromagnetic valve 91, the liquid storage tank 5, the electronic expansion valve 6, and the evaporator 7 and then enters the four-way valve 2 and returns to the compressor 1. Heat exchange is carried out through the heat exchanger 3 to realize the supply of hot water for heating. In the second mode: the refrigerant output by the compressor 1 passes through the four-way valve 2, the three-way valve 8, the condenser 41 on the hot water tank 4, the second electromagnetic valve 92, the liquid storage tank 5, the electronic expansion valve 6, and the evaporator 7 and then enters the four-way valve 2 and returns to the compressor 1. Heat exchange is carried out between the condenser 41 and the water in the hot water tank 4 to realize the supply of hot water for heating. In the third mode: the refrigerant output by the compressor 1 passes through the four-way valve 2 and the three-way valve 8. Then, a part of the refrigerant passes through the heat exchanger 3 and the first electromagnetic valve 91 and enters the liquid storage tank 5, and another part of the refrigerant passes through the condenser 41 on the hot water tank 4 and the second electromagnetic valve 92 and enters the liquid storage tank 5. The refrigerant in the liquid storage tank 5 passes through the electronic expansion valve 6 and the evaporator 7 and then enters the four-way valve 2 and returns to the compressor 1. Heat exchange is carried out through the heat exchanger 3 and heat exchange is carried out between the condenser 41 and the water in the hot water tank 4, and the two ways realize the supply of hot water for heating.

[0026] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A multifunctional heat pump heating unit, characterized in that, Including: A compressor, a four-way valve, a heat exchanger, a hot water tank, a liquid storage tank, an electronic expansion valve, and an evaporator. The output port of the compressor is connected to the inlet of the four-way valve through a pipeline. The A port of the four-way valve is connected to a three-way valve through a pipeline. One of the outlets on the three-way valve is connected to the refrigerant inlet of the heat exchanger through a pipeline, and the other outlet is connected to the inlet of the condenser provided on the hot water tank through a pipeline. The refrigerant outlet of the heat exchanger and the outlet of the condenser are respectively connected to the inside of the liquid storage tank through pipelines. The output port of the liquid storage tank is connected to the inlet of the electronic expansion valve through a pipeline. The outlet of the electronic expansion valve is connected to the inlet of the evaporator through a pipeline. A blower is provided on one side of the evaporator. The outlet of the evaporator is connected to the C port of the four-way valve through a pipeline. The B port of the four-way valve is connected to the return port of the compressor through a pipeline.

2. The multifunctional heat pump heating unit according to claim 1, characterized in that, A first solenoid valve is connected and communicated on the pipeline between the heat exchanger and the liquid storage tank. A second solenoid valve is connected and communicated on the pipeline between the condenser and the liquid storage tank.

3. A multifunctional heat pump heating unit according to claim 1, characterized in that, A first solenoid valve is connected and communicated on the pipeline between the heat exchanger and the three-way valve. A second solenoid valve is connected and communicated on the pipeline between the condenser and the three-way valve.

4. A multifunctional heat pump heating unit according to claim 1 or 2 or 3, characterized in that, The condenser is constituted by an annular heat exchange pipe provided on the outer side wall or inside of the hot water tank.

5. A multifunctional heat pump heating unit according to claim 1 or 2 or 3, characterized in that, The heat exchanger is a plate heat exchanger.

6. A multifunctional heat pump heating unit according to claim 1 or 2 or 3, characterized in that, The heat exchanger is a surface heat exchanger, a hybrid heat exchanger, or a regenerative heat exchanger.

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