Refrigerating system with heat regenerator

Abstract

The utility model discloses a refrigerating system with a heat regenerator, which belongs to the technical field of single electronic expansion valve systems and comprises a refrigerant water heat exchanger and an air side heat exchanger, one end of the refrigerant water heat exchanger is connected with a C port of a four-way valve through a four-way valve connecting pipe C, a D port of the four-way valve is connected with a compressor through an exhaust pipe, and the air side heat exchanger is connected with the compressor. An S opening of the four-way valve is connected with the heat regenerator through a four-way valve connecting pipe B. The other end of the refrigerant water heat exchanger is connected with a one-way valve assembly, and one end of the air side heat exchanger is connected with a valve assembly. The heat regenerator can be fully utilized for heat exchange in the refrigerating mode and the heating mode through the single electronic expansion valve, and the two electronic expansion valves can be used for heat exchange in the refrigerating mode and the heating mode through the design that the electronic expansion valves are connected with the one-way valves in parallel.

Description

Technical Field

[0001] The utility model relates to the technical field of single electronic expansion valve systems, in particular to a refrigeration system with a heat regenerator. Background Art

[0002] The single electronic expansion valve system is a control system used to control the flow of fluids, usually used to adjust the pressure or flow of fluids. In the single electronic expansion valve system, an electronic expansion valve is used to adjust the pressure or flow of fluids, thereby achieving control of the system. Conventional single electronic expansion valve systems cannot fully utilize the heat exchange effect of the regenerator, and can only have a heat recovery effect in one of the cooling or heating modes.

[0003] Therefore, it is necessary to develop a refrigeration system with a heat regenerator. Utility Model Content

[0004] The purpose of the utility model is to provide a refrigeration system with a regenerator. By designing a one-way valve assembly, a single electronic expansion valve can be used to fully utilize the regenerator for heat exchange in both cooling and heating modes. By designing an electronic expansion valve in parallel with a one-way valve, two electronic expansion valves can be used to respectively realize heat exchange with the regenerator in cooling and heating modes, so as to solve the problem of poor heat exchange or refrigeration effect of the conventional electronic expansion valve system proposed in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a refrigeration system with a regenerator, comprising a refrigerant water heat exchanger and an air side heat exchanger, one end of the refrigerant water heat exchanger is connected to the C port on the four-way valve through a four-way valve pipe C, the D port on the four-way valve is connected to the compressor through an exhaust pipe, and the S port on the four-way valve is connected to the regenerator through a four-way valve pipe B;

[0006] The other end of the refrigerant water heat exchanger is connected to a one-way valve assembly, and one end of the air side heat exchanger is connected to a valve assembly.

[0007] Preferably, one end of the compressor is connected to the regenerator through a return air pipe, a connecting pipe A is provided at one end of the regenerator, and a connecting pipe B is provided at the other end of the regenerator.

[0008] Preferably, the other end of the connecting pipe A is connected to one end of the electronic expansion valve A, and the other end of the air-side heat exchanger is connected to the E port on the four-way valve through the four-way valve pipe A.

[0009] Preferably, the one-way valve assembly includes one-way valve A, one-way valve B, one-way valve C and one-way valve D, and the one-way valve A, one-way valve B, one-way valve C and one-way valve D are interconnected.

[0010] Preferably, the one-way valve assembly is an electronic expansion valve B, one end of the electronic expansion valve B is connected to one end of the one-way valve E, and the electronic expansion valve B and the one-way valve E are connected to the regenerator.

[0011] Preferably, the valve assembly is a one-way valve F, one end of the one-way valve F is connected to one end of the electronic expansion valve C, and the one-way valve F and the electronic expansion valve C are connected to one end of the air-side heat exchanger.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] By designing a one-way valve assembly, a single electronic expansion valve can be used to fully utilize the regenerator for heat exchange in both cooling and heating modes.

[0014] By designing an electronic expansion valve in parallel with a check valve, two electronic expansion valves can be used to realize heat exchange with a regenerator in cooling and heating modes respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of the first embodiment provided by the utility model;

[0016] Figure 2 This is a structural schematic diagram of embodiment 2 provided by the utility model.

[0017] In the figure: 1. compressor; 2. four-way valve; 3. refrigerant water heat exchanger; 4. one-way valve assembly; 41. one-way valve A; 42. one-way valve B; 43. one-way valve C; 44. one-way valve D; 5. electronic expansion valve A; 6. air-side heat exchanger; 7. regenerator; 101. exhaust pipe; 102. return air pipe; 201. four-way valve connection pipe A; 202. four-way valve connection pipe B; 203. four-way valve connection pipe C; 71. connecting pipe A; 72. connecting pipe B; 8. electronic expansion valve B; 9. one-way valve E; 10. one-way valve F; 11. electronic expansion valve C. DETAILED DESCRIPTION

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

[0019] Embodiment 1:

[0020] The utility model provides the following technical solutions: Refrigeration system with regenerator, please refer to Figure 1, including a refrigerant water heat exchanger 3 and an air side heat exchanger 6, one end of the refrigerant water heat exchanger 3 is connected to the C port on the four-way valve 2 through the four-way valve pipe C203, the D port on the four-way valve 2 is connected to the compressor 1 through the exhaust pipe 101, the S port on the four-way valve 2 is connected to the regenerator 7 through the four-way valve pipe B202, one end of the compressor 1 is connected to the regenerator 7 through the return air pipe 102, one end of the regenerator 7 is provided with a connecting pipe A71, and the other end of the regenerator 7 is provided with a connecting pipe B72;

[0021] The other end of the refrigerant water heat exchanger 3 is connected to a one-way valve assembly 4, one end of the air side heat exchanger 6 is connected to a valve assembly, the other end of the connecting pipe A71 is connected to one end of the electronic expansion valve A5, and the other end of the air side heat exchanger 6 is connected to the E port on the four-way valve 2 through the four-way valve pipe A201;

[0022] The one-way valve assembly 4 includes a one-way valve A41, a one-way valve B42, a one-way valve C43 and a one-way valve D44, and the one-way valve A41, the one-way valve B42, the one-way valve C43 and the one-way valve D44 are connected to each other.

[0023] Working principle: When the utility model is used, the heating working mode is: the four-way valve 2 is not energized, the D port is connected to the C port, the E port is connected to the S port, the exhaust gas of the compressor 1 is connected to the D port on the four-way valve 2 through the exhaust pipe 101, and enters the refrigerant water heat exchanger 3 through the C port and the four-way valve pipe A201 for condensation and heat exchange. The cooled refrigerant enters the regenerator 7 through the one-way valve A41 and the connecting pipe B72, and comes out from the connecting pipe A71 after heat exchange with the return air. After throttling by the electronic expansion valve A5, it enters the air side heat exchanger 6 through the one-way valve C43 for evaporation. The evaporated gaseous refrigerant is connected to the E port of the four-way valve 2 through the four-way valve pipe A201, and enters the regenerator 7 from the four-way valve pipe B202 after passing through S. The further superheated gas returns to the compressor 1 from the return air pipe 102.

[0024] Refrigeration working mode: the four-way valve 2 is energized, the D port is connected to the E port, the C port is connected to the S port, the exhaust gas of the compressor 1 is connected to the D port of the four-way valve 2 through the exhaust pipe 101, and enters the air side heat exchanger 6 through the E port and the four-way valve pipe A201 for condensation and heat exchange. The cooled refrigerant enters the regenerator 7 through the one-way valve D44 and the connecting pipe B72, and comes out from the connecting pipe A71 after heat exchange with the return air. After throttling by the electronic expansion valve A5, it enters the refrigerant water heat exchanger 3 through the one-way valve B42 for evaporation. The evaporated gaseous refrigerant is connected to the C port of the four-way valve 2 through the four-way valve pipe C203, and enters the regenerator 7 from the four-way valve pipe B202 after passing through S. The further superheated gas returns to the compressor 1 from the return air pipe 102.

[0025] Through the one-way valve assembly design, only one electronic expansion valve is needed for cooling mode and heating mode, and the heat exchanger can be used for both modes.

[0026] Embodiment 2:

[0027] The utility model provides the following technical solutions: Refrigeration system with regenerator, please refer to Figure 2 , including a refrigerant water heat exchanger 3 and an air side heat exchanger 6, one end of the refrigerant water heat exchanger 3 is connected to the C port on the four-way valve 2 through the four-way valve pipe C203, the D port on the four-way valve 2 is connected to the compressor 1 through the exhaust pipe 101, the S port on the four-way valve 2 is connected to the regenerator 7 through the four-way valve pipe B202, one end of the compressor 1 is connected to the regenerator 7 through the return air pipe 102, one end of the regenerator 7 is provided with a connecting pipe A71, and the other end of the regenerator 7 is provided with a connecting pipe B72;

[0028] The other end of the refrigerant water heat exchanger 3 is connected to a one-way valve assembly 4, one end of the air side heat exchanger 6 is connected to a valve assembly, the other end of the connecting pipe A71 is connected to one end of the electronic expansion valve A5, and the other end of the air side heat exchanger 6 is connected to the E port on the four-way valve 2 through the four-way valve pipe A201;

[0029] The one-way valve assembly 4 is an electronic expansion valve B8, one end of the electronic expansion valve B8 is connected to one end of the one-way valve E9, and the electronic expansion valve B8 and the one-way valve E9 are connected to the regenerator 7;

[0030] The valve assembly is a one-way valve F10 , one end of which is connected to one end of the electronic expansion valve C11 , and the one-way valve F10 , the electronic expansion valve C11 and one end of the air-side heat exchanger 6 are connected.

[0031] Working principle: When the utility model is used, in the heating working mode: the four-way valve 2 is not energized, the electronic expansion valve B8 is closed, and the electronic expansion valve C11 adjusts the opening according to demand.

[0032] Refrigeration working mode: four-way valve 2 is energized, electronic expansion valve C11 is closed, and electronic expansion valve B8 adjusts its opening according to demand.

[0033] By designing an electronic expansion valve in parallel with a check valve, two electronic expansion valves can be used to realize heat exchange with a regenerator in cooling and heating modes respectively.

[0034] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A refrigeration system with a regenerator, comprising a refrigerant water heat exchanger (3) and an air side heat exchanger (6), characterized in that: One end of the refrigerant water heat exchanger (3) is connected to the C port on the four-way valve (2) through a four-way valve pipe C (203), the D port on the four-way valve (2) is connected to the compressor (1) through an exhaust pipe (101), and the S port on the four-way valve (2) is connected to the regenerator (7) through a four-way valve pipe B (202); The other end of the refrigerant water heat exchanger (3) is connected to a one-way valve assembly (4), and one end of the air side heat exchanger (6) is connected to a valve assembly.

2. The refrigeration system with a regenerator according to claim 1, characterized in that: One end of the compressor (1) is connected to the regenerator (7) via a return air pipe (102); one end of the regenerator (7) is provided with a connecting pipe A (71); and the other end of the regenerator (7) is provided with a connecting pipe B (72).

3. The refrigeration system with a regenerator according to claim 2, characterized in that: The other end of the connecting pipe A (71) is connected to one end of the electronic expansion valve A (5), and the other end of the air-side heat exchanger (6) is connected to the E port on the four-way valve (2) through the four-way valve pipe A (201).

4. The refrigeration system with a regenerator according to claim 1, characterized in that: The one-way valve assembly (4) comprises a one-way valve A (41), a one-way valve B (42), a one-way valve C (43) and a one-way valve D (44), wherein the one-way valve A (41), the one-way valve B (42), the one-way valve C (43) and the one-way valve D (44) are interconnected.

5. The refrigeration system with a regenerator according to claim 1, characterized in that: The one-way valve assembly (4) is an electronic expansion valve B (8), one end of the electronic expansion valve B (8) is connected to one end of the one-way valve E (9), and the electronic expansion valve B (8) and the one-way valve E (9) are connected to the regenerator (7).

6. The refrigeration system with a regenerator according to claim 1, characterized in that: The valve assembly is a one-way valve F (10), one end of which is connected to one end of an electronic expansion valve C (11), and the one-way valve F (10) and the electronic expansion valve C (11) are connected to one end of an air-side heat exchanger (6).

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