Refrigerating system in half-full liquid supply mode

Abstract

The utility model discloses a refrigerating system in a semi-full liquid supply mode, which comprises a compressor, the output end of the compressor is fixedly connected with a condenser, the output end of the condenser is fixedly connected with a liquid storage device, the output end of the liquid storage device is fixedly connected with a plate heat exchanger, and the output end of the bottom of the plate heat exchanger is provided with an evaporation component. The output end of the plate heat exchanger is fixedly connected to the input end of the compressor, the top of the low-pressure circulation barrel is connected with an electronic liquid level meter in a penetrating mode, and a fixing component is arranged at the penetrating position of the electronic liquid level meter and the low-pressure circulation barrel. The bolt is connected to the front face of the fixing box in a penetrating mode, the two clamping arms rotate around the hinged position under the traction of the tension spring by unscrewing the bolt, the electronic liquid level meter is fixedly clamped, an operator can disassemble the electronic liquid level meter conveniently through the design, compared with bolt fixing, the disassembling time of the electronic liquid level meter is shortened, and the disassembling efficiency of the electronic liquid level meter is improved. And an operator can conveniently disassemble and clean the detection rod of the electronic liquid level instrument.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a refrigeration system with a half-full liquid supply mode. Background Art

[0002] The half-full liquid supply method is a design method for the liquid supply system. In the field of refrigeration, the refrigerant is in a half-full liquid state in the evaporator through the full liquid supply method of the low-pressure circulation barrel and the refrigerant circulation pump. After the refrigerant in the evaporator evaporates, it returns to the low-pressure circulation barrel. After separation, the gaseous refrigerant is sucked away by the compressor. After the liquid refrigerant reaches the set liquid level, the refrigerant circulation pump is started to send the liquid refrigerant to the evaporator for forced circulation. The refrigerant circulation pump is started according to the reading of the electronic liquid level gauge of the low-pressure circulation barrel to open and close. The traditional electronic liquid level gauge generally uses a thread inserted on the top of the low-pressure circulation barrel. The electronic liquid level gauge needs to regularly clean the sticky impurities on its surface. The process of thread insertion, fixing and disassembly is time-consuming. In order to realize the rapid disassembly and cleaning of the electronic liquid level gauge, a new type of refrigeration system with a half-full liquid supply method that can quickly disassemble the electronic liquid level gauge is required. Utility Model Content

[0003] The purpose of the utility model is to provide a refrigeration system with a half-full liquid supply mode to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a refrigeration system with a half-full liquid supply method, comprising a compressor, the output end of the compressor is fixedly connected to a condenser, the output end of the condenser is fixedly connected to a liquid reservoir, the output end of the liquid reservoir is fixedly connected to a plate heat exchanger, the bottom output end of the plate heat exchanger is provided with an evaporation component, the input end of the plate heat exchanger is fixedly connected to a low-pressure circulation barrel, the bottom output end of the low-pressure circulation barrel is fixedly connected to a forced circulation component, the output end of the plate heat exchanger is fixedly connected to the input end of the compressor, the top of the low-pressure circulation barrel is interspersed with an electronic liquid level gauge, and the intersection of the electronic liquid level gauge and the low-pressure circulation barrel is provided with a fixing component for fixing the electronic liquid level gauge.

[0005] Preferably, the fixing component includes a fixing box, which is fixedly connected to the top of the low-pressure circulation barrel, and the electronic liquid level gauge is inserted and connected to the top of the fixing box. The side thread of the fixing box is inserted and connected with a bolt, and the threaded end of the bolt is inserted and connected with a groove block in the inner cavity of the fixing box. The inner cavity of the groove block is symmetrically hinged with a clamping arm, the electronic liquid level gauge is inserted and connected to the adjacent side of the clamping arm, and the top end of the bolt is fixedly connected with a frustum block on the adjacent side of the clamping arm.

[0006] Preferably, a tension spring is provided at one end of the adjacent side of the clamping arm away from the truncated cone block, and a rubber pad for alleviating the clamping force is fixedly connected to the clamping side of the clamping arm.

[0007] Preferably, the evaporation component comprises an evaporator, an input end of the evaporator is fixedly connected to an expansion valve, an input end of the expansion valve is fixedly connected to a solenoid valve, and an input end of the solenoid valve is fixedly connected to an output end of the plate heat exchanger.

[0008] Preferably, the forced circulation component includes a circulation pump, the output end of the circulation pump is fixedly connected to a stop check valve, the output end of the stop check valve is fixedly connected to the input end of the evaporator, and the input end of the circulation pump is fixedly connected to the output end of the low-pressure circulation barrel.

[0009] Preferably, an oil throttle valve for controlling the flow of oil is provided at the connection between the plate heat exchanger and the low-pressure circulation barrel, and a filter is provided at the connection between the plate heat exchanger and the liquid reservoir.

[0010] Preferably, an oil separator for separating oil and impurities is provided at the connection between the output end of the compressor and the condenser, and the output end of the oil separator is fixedly connected to the input end of the compressor.

[0011] Preferably, limiting rods are symmetrically arranged at the top of the inner cavity of the fixing box and on the sides of the clamping arms.

[0012] Preferably, a sealing ring is provided at the intersection of the electronic liquid level gauge and the inner wall of the low-pressure circulation barrel.

[0013] Technical effects and advantages of the utility model:

[0014] The utility model provides a fixing box on the top of the low-pressure circulation barrel, the front of the fixing box is connected with bolts, and the electronic liquid level meter is inserted into the inner cavity of the low-pressure circulation barrel. The user loosens the bolts, and the two clamping arms rotate around the hinges with the slot block under the traction of the tension spring to fix the electronic liquid level meter. This design is convenient for the operator to disassemble the electronic liquid level meter. Compared with bolt fixing, it reduces the disassembly time of the electronic liquid level meter and is convenient for the operator to disassemble and clean the detection rod of the electronic liquid level meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a refrigeration system of the utility model with a half-full liquid supply mode.

[0016] Figure 2 It is a structural schematic diagram of the low-pressure circulation barrel of the utility model.

[0017] Figure 3 It is a longitudinal sectional view of the fixing component of the utility model.

[0018] Figure 4 It is a cross-sectional view of the fixing component of the utility model.

[0019] In the figure: 1. compressor; 2. oil separator; 3. condenser; 4. liquid storage tank; 5. filter; 6. plate heat exchanger; 7. solenoid valve; 8. expansion valve; 9. evaporator; 10. low-pressure circulation barrel; 11. oil throttle valve; 12. circulation pump; 13. stop check valve; 14. fixing box; 15. groove block; 16. clamping arm; 161. rubber pad; 17. electronic liquid level gauge; 18. bolt; 19. frustum block; 20. tension spring; 21. limit rod; 22. sealing ring. DETAILED DESCRIPTION

[0020] 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.

[0021] The utility model provides Figure 1-4 A refrigeration system with a half-full liquid supply mode is shown, comprising a compressor 1, the output end of the compressor 1 is fixedly connected to a condenser 3, the output end of the condenser 3 is fixedly connected to a liquid reservoir 4, the output end of the liquid reservoir 4 is fixedly connected to a plate heat exchanger 6, and the bottom output end of the plate heat exchanger 6 is provided with an evaporation component;

[0022] Specifically, the evaporation component includes an evaporator 9, the input end of the evaporator 9 is fixedly connected to an expansion valve 8, the input end of the expansion valve 8 is fixedly connected to a solenoid valve 7, the input end of the solenoid valve 7 is fixedly connected to the output end of the plate heat exchanger 6, and an oil separator 2 for separating oil and impurities is provided at the connection between the output end of the compressor 1 and the condenser 3, and the output end of the oil separator 2 is fixedly connected to the input end of the compressor 1.

[0023] The input end of the plate heat exchanger 6 is fixedly connected to a low-pressure circulation barrel 10, and the bottom output end of the low-pressure circulation barrel 10 is fixedly connected to a forced circulation component;

[0024] Specifically, the forced circulation component includes a circulation pump 12, the output end of the circulation pump 12 is fixedly connected to a stop check valve 13, the output end of the stop check valve 13 is fixedly connected to the input end of the evaporator 9, and the input end of the circulation pump 12 is fixedly connected to the output end of the low-pressure circulation barrel 10;

[0025] It should be noted that the evaporator 9 has a dry liquid supply method through the expansion valve 8, and also includes a full liquid supply method through the low-pressure circulation barrel 10 and the refrigerant circulation pump 12, so that the refrigerant is in a half-full liquid state in the evaporator 9, achieving the purpose of using less refrigerant and ensuring the refrigeration effect, and there is no need to worry about the liquid return problem when using the low-pressure circulation barrel 10, which is safe and reliable.

[0026] The output end of the plate heat exchanger 6 is fixedly connected to the input end of the compressor 1, and an electronic liquid level gauge 17 is inserted and connected to the top of the low-pressure circulation barrel 10. A fixing member for fixing the electronic liquid level gauge 17 is provided at the insertion point of the electronic liquid level gauge 17 and the low-pressure circulation barrel 10;

[0027] Specifically, the fixing member includes a fixing box 14, the fixing box 14 is fixedly connected to the top of the low-pressure circulation barrel 10, the electronic liquid level gauge 17 is inserted and connected to the top of the fixing box 14, the side thread of the fixing box 14 is inserted and connected with a bolt 18, the threaded end of the bolt 18 and the inner cavity of the fixing box 14 are inserted and connected with a groove block 15, the inner cavity of the groove block 15 is symmetrically hinged with a clamping arm 16, the electronic liquid level gauge 17 is inserted and connected to the adjacent side of the clamping arm 16, and the top of the bolt 18 and the adjacent side of the clamping arm 16 are fixedly connected with a truncated cone block 19;

[0028] It should be noted that there is a rectangular platform on the top of the low-pressure circulation barrel 10, and the top is connected to the fixing box 14 by welding. The model of the electronic liquid level meter 17 is WKTZ-136R.

[0029] A tension spring 20 is provided at one end of the adjacent side of the clamping arm 16 away from the truncated cone block 19, and a rubber pad 161 for relieving the clamping force is fixedly connected to the clamping side of the clamping arm 16. A sealing ring 22 is provided at the intersection of the electronic liquid level gauge 17 and the inner wall of the low-pressure circulation barrel 10, and a limit rod 21 is symmetrically provided at the top of the inner cavity of the fixed box 14 and on the side of the clamping arm 16.

[0030] An oil throttle valve 11 for controlling the flow of oil is provided at the connection between the plate heat exchanger 6 and the low-pressure circulation barrel 10 , and a filter 5 is provided at the connection between the plate heat exchanger 6 and the liquid reservoir 4 .

[0031] It should be noted that the mixture of liquid refrigerant and refrigeration oil is controlled to enter the plate heat exchanger 6 by adjusting the oil throttle valve 11. At the same time, since the other side of the plate heat exchanger 6 is the refrigerant with a higher temperature after condensation, the oil-liquid mixture is heated so that the refrigeration oil is subjected to the expansion pressure of liquid vaporization and the suction pressure of the compressor 1 and returns to the compressor 1, thus solving the oil return problem of the half-full liquid supply method.

[0032] In actual use, a fixing box 14 is provided on the top of the low-pressure circulation barrel 10, and a bolt 18 is inserted and connected to the front of the fixing box 14. The electronic liquid level gauge 17 is inserted into the inner cavity of the low-pressure circulation barrel 10. The user rotates the bolt 18 clockwise, and the frustum block 19 moves away from the slot block 15. The two clamping arms 16 rotate around the hinge between them and the slot block 15 under the traction of the tension spring 20 to fix and clamp the electronic liquid level gauge 17. When disassembling, the bolt 18 is rotated counterclockwise, and the frustum block 19 moves toward the slot block 15. The clamping arms 16 rotate away from each other, and the electronic liquid level gauge 17 is released. This design is convenient for the operator to disassemble the electronic liquid level gauge 17. Compared with the fixation with the bolt 18, the disassembly time of the electronic liquid level gauge 17 is reduced, and it is convenient for the operator to disassemble and clean the detection rod of the electronic liquid level gauge 17.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigeration system with a half-full liquid supply method, comprising a compressor (1), the output end of the compressor (1) being fixedly connected to a condenser (3), the output end of the condenser (3) being fixedly connected to a liquid storage device (4), characterized in that: The output end of the liquid storage device (4) is fixedly connected to a plate heat exchanger (6), and the bottom output end of the plate heat exchanger (6) is provided with an evaporation component. The input end of the plate heat exchanger (6) is fixedly connected to a low-pressure circulation barrel (10), and the bottom output end of the low-pressure circulation barrel (10) is fixedly connected to a forced circulation component. The output end of the plate heat exchanger (6) is fixedly connected to the input end of the compressor (1). The top of the low-pressure circulation barrel (10) is interlaced with an electronic liquid level gauge (17), and a fixing component for fixing the electronic liquid level gauge (17) is provided at the intersection of the electronic liquid level gauge (17) and the low-pressure circulation barrel (10).

2. A refrigeration system with a half-full liquid supply method according to claim 1, characterized in that: The fixing component comprises a fixing box (14), wherein the fixing box (14) is fixedly connected to the top of the low-pressure circulation barrel (10), the electronic liquid level gauge (17) is inserted and connected to the top of the fixing box (14), the side thread of the fixing box (14) is inserted and connected to a bolt (18), the threaded end of the bolt (18) is inserted and connected to a groove block (15) located in the inner cavity of the fixing box (14), the inner cavity of the groove block (15) is symmetrically hinged with a clamping arm (16), the electronic liquid level gauge (17) is inserted and connected to the adjacent side of the clamping arm (16), and the top end of the bolt (18) is fixedly connected to a truncated cone block (19) located in the adjacent side of the clamping arm (16).

3. A refrigeration system with a half-full liquid supply method according to claim 2, characterized in that: A tension spring (20) is provided at one end of the adjacent side of the clamping arm (16) away from the truncated cone block (19), and a rubber pad (161) for alleviating clamping force is fixedly connected to the clamping side of the clamping arm (16).

4. A refrigeration system with a half-full liquid supply method according to claim 1, characterized in that: The evaporation component comprises an evaporator (9), the input end of the evaporator (9) is fixedly connected to an expansion valve (8), the input end of the expansion valve (8) is fixedly connected to a solenoid valve (7), and the input end of the solenoid valve (7) is fixedly connected to the output end of the plate heat exchanger (6).

5. A refrigeration system with a half-full liquid supply method according to claim 4, characterized in that: The forced circulation component comprises a circulation pump (12), the output end of the circulation pump (12) is fixedly connected to a stop check valve (13), the output end of the stop check valve (13) is fixedly connected to the input end of the evaporator (9), and the input end of the circulation pump (12) is fixedly connected to the output end of the low-pressure circulation barrel (10).

6. A refrigeration system with a half-full liquid supply method according to claim 1, characterized in that: An oil throttle valve (11) for controlling the flow of oil is provided at the connection between the plate heat exchanger (6) and the low-pressure circulation barrel (10), and a filter (5) is provided at the connection between the plate heat exchanger (6) and the liquid storage tank (4).

7. A refrigeration system with a half-full liquid supply method according to claim 1, characterized in that: An oil separator (2) for separating oil and impurities is provided at the connection between the output end of the compressor (1) and the condenser (3), and the output end of the oil separator (2) is fixedly connected to the input end of the compressor (1).

8. A refrigeration system with a half-full liquid supply method according to claim 3, characterized in that: A limiting rod (21) is symmetrically arranged at the top of the inner cavity of the fixing box (14) and on the side of the clamping arm (16).

9. A refrigeration system with a half-full liquid supply method according to claim 3, characterized in that: A sealing ring (22) is provided at the intersection between the electronic liquid level meter (17) and the inner wall of the low-pressure circulation barrel (10).

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