Low-temperature single-machine piston unit with air-cooled condenser and liquid accumulator

Abstract

The utility model discloses a low-temperature single-machine piston unit with an air-cooled condenser and a liquid storage device, which comprises a gas-liquid separator used for separating refrigerant steam and non-evaporated refrigerant liquid and inputting the refrigerant steam into a compressor; the oil separator is used for separating oil and refrigerant steam in the compressor; the air-cooled condenser is used for re-condensing the separated refrigerant steam to form refrigerant liquid; the liquid storage device is used for storing refrigerant liquid; and the drying filter is used for drying impurities and moisture in the refrigerant liquid and supplying the refrigerant liquid to the refrigeration house again. According to the low-temperature single-machine piston unit, refrigerant steam and unevaporated refrigerant liquid in a refrigeration house can be compressed, separated, condensed, dried and reused, the working stability and reliability of the low-temperature single-machine piston unit can be improved, and the service life of the low-temperature single-machine piston unit is prolonged.

Description

Technical Field

[0001] The utility model relates to a low-temperature single-machine piston unit with an air-cooled condenser and a liquid storage device. Background Art

[0002] Low-temperature single-unit piston units are currently widely used in supermarkets, cold storage and other projects.

[0003] Due to structural design defects, the low-temperature single-unit piston unit in the prior art cannot effectively recycle the refrigerant, and the refrigerant recovery efficiency is low, which affects the service life of the low-temperature single-unit piston unit. Utility Model Content

[0004] The utility model aims to address the deficiencies in the prior art and to provide a technical solution for a low-temperature single-unit piston unit with an air-cooled condenser and a liquid storage device, which can not only compress, separate, condense and dry the refrigerant vapor and the unevaporated refrigerant liquid in the cold storage for reuse, but also improve the working stability and reliability of the low-temperature single-unit piston unit and extend its service life.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A low-temperature single-unit piston unit with an air-cooled condenser and a liquid storage device, characterized in that:

[0007] a gas-liquid separator, which is connected to the cold storage and the compressor through a first delivery pipe and a second delivery pipe respectively, and is used to separate the refrigerant vapor from the unevaporated refrigerant liquid, and input the refrigerant vapor into the compressor;

[0008] an oil separator, the oil separator being connected to the compressor via a third delivery pipe and being used for separating the oil and refrigerant vapor inside the compressor;

[0009] an air-cooled condenser, the air-cooled condenser being connected to the oil separator via a fourth delivery pipe and being used for re-condensing the separated refrigerant vapor into a refrigerant liquid;

[0010] a liquid accumulator, the liquid accumulator being connected to the air-cooled condenser via a fifth delivery pipe and being used for storing refrigerant liquid;

[0011] and a drying filter, which is connected to the liquid storage device and the cold storage through the sixth delivery pipe and the seventh delivery pipe respectively, and is used to dry impurities and moisture in the refrigerant liquid and supply it back to the cold storage. Through the design of the above structure, not only can the refrigerant vapor and the unevaporated refrigerant liquid in the cold storage be compressed, separated, condensed and dried for reuse, but also the working stability and reliability of the low-temperature single-unit piston unit can be improved, and its service life can be extended.

[0012] Furthermore, the liquid reservoir is a horizontal liquid reservoir.

[0013] Furthermore, it also includes a bracket, and the gas-liquid separator, oil separator, air-cooled condenser and liquid reservoir are all installed on the bracket. The bracket can improve the stability and reliability of the installation of the gas-liquid separator, oil separator, air-cooled condenser and liquid reservoir, and facilitate the routing of each delivery pipe.

[0014] Furthermore, the air-cooled condenser is provided with heat exchange tubes, heat exchange fins, a guide box, a driving mechanism and a cleaning mechanism. The guide boxes are distributed in parallel inside the air-cooled condenser. Heat exchange tubes are distributed between two adjacent guide boxes in the same horizontal plane. Heat exchange tubes are provided with heat exchange fins. Heat exchange tubes are provided between two upper and lower adjacent guide boxes. A water tank is provided on the top of the air-cooled condenser. The water tank is connected to the cleaning mechanism through a hose. The driving mechanism is connected to the cleaning mechanism. The cleaning mechanism moves along the inside of the air-cooled condenser to clean the heat exchange tubes and heat exchange fins. The refrigerant vapor separated by the oil separator is input The heat exchange tube exchanges heat with the air through the heat exchange fins, so that the steam condenses to form refrigerant liquid. The combined design of the guide box and the heat exchange tube can avoid the problem of blockage of a single heat exchange tube causing circulation without affecting the normal flow of the refrigerant. The horizontally distributed heat exchange tubes, the vertically distributed heat exchange tubes and the guide box cooperate to form an S-shaped structure, which is conducive to the flow of the refrigerant and improves the heat exchange efficiency. Water is input into the cleaning mechanism through the water tank. A water pump can be set in the water tank. The dust and impurities on the surface of the heat exchange tubes and heat exchange fins can be removed through the cleaning mechanism to improve the heat exchange efficiency of the air-cooled condenser.

[0015] The lower moving plate is fixedly connected to the upper moving plate by the limit bar, and the lower moving plate is fixedly connected to the lower moving plate by the side plate. The second motor and the second baffle are arranged on the top surface of the upper moving plate, and the second motor is connected to the second baffle through the rotating shaft. Cleaning rods are evenly arranged between the upper moving plate and the lower moving plate, and a brush is arranged on the outer circumferential side surface of the cleaning rod. The top end of the cleaning rod passes through the upper moving plate, and the cleaning rod is connected to the rotating shaft through a bevel gear set. The side plate improves the stability and reliability of the installation between the upper moving plate and the lower moving plate. The rotating shaft is driven to rotate by the second motor, and then the various cleaning rods can be driven to rotate synchronously through the bevel gear set, so that the brush cleans the heat exchange tubes and the heat exchange fins. The limiting strips and the guide grooves improve the stability and reliability of the upper moving plate and the lower moving plate when moving.

[0016] Furthermore, the driving mechanism includes a first motor, a screw and a first baffle. The first motor and the first baffle are arranged in the air-cooled condenser. The first motor is connected to the first baffle through a screw. A booster block is provided on the bottom surface of the upper movable plate. The screw is connected to the booster block. The screw is driven to rotate by the first motor, and then the upper movable plate and the lower movable plate can be driven to move synchronously through the booster block, thereby realizing horizontal movement of the entire cleaning mechanism and cleaning each heat exchange tube and heat exchange fin.

[0017] Furthermore, spray pipes are symmetrically provided on both sides of the upper movable plate, and a water inlet pipe is provided on the top surface of the upper movable plate. The water inlet pipes are respectively connected to the spray pipe and the hose. The water in the water tank is transported to the water inlet pipe through the hose. The water inlet pipe is sprayed through the spray pipe to improve the cleaning efficiency of the heat exchange tube and the heat exchange fin.

[0018] Furthermore, rollers are provided on the bottom surface of the lower moving plate, and the rollers can not only support the lower moving plate, but also reduce the friction force when the moving plate moves.

[0019] Furthermore, a water storage tank is provided at the bottom of the air-cooled condenser, and a water outlet is provided on the water storage tank. Cleaned sewage can flow into the water storage tank and be discharged through the water outlet via an external pipe.

[0020] Furthermore, an air inlet and an air outlet are respectively provided on both sides of the air-cooled condenser. A fan, a first filter and a protective cover are provided at the air inlet, and a second filter is provided at the air outlet. The fan generates wind to achieve air flow, and the first filter and the second filter can filter dust and impurities.

[0021] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0022] 1. The utility model can not only compress, separate, condense and dry the refrigerant vapor and the unevaporated refrigerant liquid in the cold storage for reuse, but also improve the working stability and reliability of the low-temperature single-unit piston unit and extend its service life.

[0023] 2. The refrigerant vapor separated by the oil separator is input into the heat exchange tube, and heat is exchanged with the air through the heat exchange fins to condense the vapor to form refrigerant liquid. The combined design of the guide box and the heat exchange tube can avoid the problem of blockage of a single heat exchange tube and the normal flow of the refrigerant. The horizontally distributed heat exchange tubes, the vertically distributed heat exchange tubes and the guide box form an S-shaped structure, which is conducive to the flow of the refrigerant and improves the heat exchange efficiency. Water is input into the cleaning mechanism through the water tank. A water pump can be set in the water tank. The dust and impurities on the surface of the heat exchange tube and the heat exchange fin can be removed through the cleaning mechanism to improve the heat exchange efficiency of the air-cooled condenser.

[0024] 3. The second motor drives the rotating shaft to rotate, and then the bevel gear set can drive each cleaning rod to rotate synchronously, so that the brush cleans the heat exchange tube and heat exchange fin. The limit strip and guide groove improve the stability and reliability of the upper and lower moving plates when moving. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] Figure 1 This is a rendering of a low-temperature single-unit piston unit with an air-cooled condenser and a liquid reservoir in the utility model;

[0027] Figure 2 for Figure 1 A top view of

[0028] Figure 3 This is a rendering of the air inlet side of the air-cooled condenser in the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the air outlet side of the air-cooled condenser in the utility model;

[0030] Figure 5 This is a schematic diagram of the internal structure of the air-cooled condenser in the utility model;

[0031] Figure 6 It is a structural schematic diagram of the cleaning mechanism in the utility model.

[0032] In the figure: 1-air-cooled condenser; 2-liquid storage tank; 3-oil separator; 4-gas-liquid separator; 5-drying filter; 6-bracket; 7-protective cover; 8-first delivery pipe; 9-second delivery pipe; 10-third delivery pipe; 11-fourth delivery pipe; 12-fifth delivery pipe; 13-sixth delivery pipe; 14-seventh delivery pipe; 15-water tank; 16-fan; 17-air inlet; 18-first filter screen; 19-air outlet; 20-second filter screen; 2 1- flow guide box; 22- heat exchange tube; 23- heat exchange fin; 24- first motor; 25- screw; 26- first baffle; 27- cleaning mechanism; 28- water trough; 29- water outlet; 30- upper movable plate; 31- lower movable plate; 32- cleaning rod; 33- brush; 34- second motor; 35- rotating shaft; 36- bevel gear set; 37- second baffle; 38- water inlet pipe; 39- spray pipe; 40- roller; 41- side plate; 42- booster block. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0036] like Figures 1 to 6 As shown, the utility model is a low-temperature single-unit piston unit with an air-cooled condenser 1 and a liquid reservoir 2, including a gas-liquid separator 4, an oil separator 3, the air-cooled condenser 1, the liquid reservoir 2 and a drying filter 5. The low-temperature single-unit piston unit also includes a bracket 6. The gas-liquid separator 4, the oil separator 3, the air-cooled condenser 1 and the liquid reservoir 2 are all installed on the bracket 6. The bracket 6 can improve the stability and reliability of the installation of the gas-liquid separator 4, the oil separator 3, the air-cooled condenser 1 and the liquid reservoir 2, and facilitate the routing of each delivery pipe.

[0037] The gas-liquid separator 4 is connected to the cold storage and the compressor through the first delivery pipe 8 and the second delivery pipe 9 respectively, and is used to separate the refrigerant vapor and the unevaporated refrigerant liquid, and input the refrigerant vapor into the compressor.

[0038] The oil separator 3 is connected to the compressor via a third delivery pipe 10 and is used for separating the oil and refrigerant vapor inside the compressor.

[0039] The air-cooled condenser 1 is connected to the oil separator 3 via a fourth delivery pipe 11, so as to re-condense the separated refrigerant vapor into refrigerant liquid.

[0040] The air-cooled condenser 1 is provided with heat exchange tubes 22, heat exchange fins 23, guide boxes 21, driving mechanisms and cleaning mechanisms 27. The guide boxes 21 are arranged in parallel inside the air-cooled condenser 1. Heat exchange tubes 22 are arranged between two adjacent guide boxes 21 in the same horizontal plane. Heat exchange fins 23 are arranged on the heat exchange tubes 22. Heat exchange tubes 22 are arranged between two upper and lower adjacent guide boxes 21. A water tank 15 is arranged on the top of the air-cooled condenser 1. The water tank 15 is connected to the cleaning mechanism 27 through a hose. The driving mechanism is connected to the cleaning mechanism 27. The cleaning mechanism 27 moves along the inside of the air-cooled condenser 1 to clean the heat exchange tubes 22 and the heat exchange fins 23. The refrigerant separated by the oil separator 3 Steam is input into the heat exchange tube 22, and heat is exchanged with the air through the heat exchange fins 23, so that the steam is condensed to form a refrigerant liquid. The combined design of the guide box 21 and the heat exchange tube 22 can avoid the problem of a single heat exchange tube 22 being blocked and causing the refrigerant to be unable to flow, and at the same time does not affect the normal flow of the refrigerant. The transversely distributed heat exchange tubes 22, the vertically distributed heat exchange tubes 22 and the guide box 21 cooperate to form an S-shaped structure, which is beneficial to the flow of the refrigerant and improves the heat exchange efficiency. Water is input into the cleaning mechanism 27 through the water tank 15. A water pump can be set in the water tank 15. The cleaning mechanism 27 can remove dust and impurities on the surface of the heat exchange tube 22 and the heat exchange fin 23, thereby improving the heat exchange efficiency of the air-cooled condenser 1.

[0041] The cleaning mechanism 27 includes an upper movable plate 30, a lower movable plate 31, a second motor 34, a rotating shaft 35 and a cleaning rod 32. A guide groove is provided on the inner wall of the air-cooled condenser 1. The upper movable plate 30 and the lower movable plate 31 move along the guide groove through a limit bar. The upper movable plate 30 is fixedly connected to the lower movable plate 31 through a side plate 41. The second motor 34 and the second baffle plate 37 are arranged on the top surface of the upper movable plate 30. The second motor 34 is connected to the second baffle plate 37 through a rotating shaft 35. The cleaning rods 32 are evenly arranged between the upper movable plate 30 and the lower movable plate 31. The outer surface of the cleaning rods 32 A brush 33 is provided on the circumferential side surface, and the top end of the cleaning rod 32 passes through the upper movable plate 30. The cleaning rod 32 is connected to the rotating shaft 35 through a bevel gear set 36. The side plate 41 improves the stability and reliability of the installation between the upper movable plate 30 and the lower movable plate 31. The rotating shaft 35 is driven to rotate by the second motor 34, and then the bevel gear set 36 can drive each cleaning rod 32 to rotate synchronously, so that the brush 33 cleans the heat exchange tube 22 and the heat exchange fin 23. The limit strip and the guide groove improve the stability and reliability of the upper movable plate 30 and the lower movable plate 31 when moving.

[0042] The driving mechanism includes a first motor 24, a screw 25 and a first baffle 26. The first motor 24 and the first baffle 26 are arranged in the air-cooled condenser 1. The first motor 24 is connected to the first baffle 26 through the screw 25. A booster block 42 is provided on the bottom surface of the upper movable plate 30. The screw 25 is connected to the booster block 42. The screw 25 is driven to rotate by the first motor 24, and then the upper movable plate 30 and the lower movable plate 31 can be driven to move synchronously through the booster block 42, thereby realizing the horizontal movement of the entire cleaning mechanism 27 and cleaning each heat exchange tube 22 and heat exchange fin 23.

[0043] Spray pipes 39 are symmetrically provided on both sides of the upper movable plate 30, and a water inlet pipe 38 is provided on the top surface of the upper movable plate 30. The water inlet pipe 38 is respectively connected to the spray pipe 39 and the hose. The water in the water tank 15 is transported to the water inlet pipe 38 through the hose. The water inlet pipe 38 is sprayed through the spray pipe 39 to improve the cleaning efficiency of the heat exchange tube 22 and the heat exchange fin 23.

[0044] A roller 40 is provided on the bottom surface of the lower moving plate 31 , and the roller 40 can not only support the lower moving plate 31 , but also reduce the friction force when the moving plate moves.

[0045] A water trough 28 is provided at the bottom of the air-cooled condenser 1 , and a water outlet 29 is provided on the water trough 28 . Cleaned sewage can flow into the water trough 28 and be discharged through the water outlet 29 via an external pipe.

[0046] An air inlet 17 and an air outlet 19 are respectively provided on both sides of the air-cooled condenser 1. A fan 16, a first filter 18 and a protective cover 7 are provided at the air inlet 17. A second filter 20 is provided at the air outlet 19. The fan 16 generates wind force to achieve air flow. The first filter 18 and the second filter 20 can filter dust and impurities. A protective cover 7 is provided on the outside of the air inlet 17 to protect the fan 16.

[0047] The liquid storage tank 2 is connected to the air-cooled condenser 1 through the fifth delivery pipe 12 and is used to store the refrigerant liquid. The liquid storage tank 2 is a horizontal liquid storage tank 2.

[0048] The drying filter 5 is connected to the liquid storage 2 and the cold storage through the sixth delivery pipe 13 and the seventh delivery pipe 14, respectively, and is used to dry impurities and moisture in the refrigerant liquid and supply it back to the cold storage. Through the design of the above structure, not only can the refrigerant vapor and the unevaporated refrigerant liquid in the cold storage be compressed, separated, condensed and dried for reuse, but also the working stability and reliability of the low-temperature single-unit piston unit can be improved, and its service life can be extended.

[0049] When the utility model is actually used, the refrigerator steam and the unevaporated refrigerant liquid in the cold storage flow into the gas-liquid separator, are separated by the gas-liquid separator, the liquid sinks, and the steam enters the compressor; after being compressed by the compressor, they are discharged into the oil separator, and the oil separator separates the oil inside the compressor and the compressed refrigerant steam; the separated refrigerant steam enters the air-cooled condenser, is re-condensed into the refrigerant liquid and flows into the liquid storage device, and is finally supplied back to the cold storage after the impurities and moisture are removed by the drying filter.

[0050] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A low-temperature single-unit piston unit with an air-cooled condenser and a liquid reservoir, characterized in that: include a gas-liquid separator, the gas-liquid separator being connected to the cold storage and the compressor respectively through a first delivery pipe and a second delivery pipe, for separating refrigerant vapor from unevaporated refrigerant liquid, and inputting the refrigerant vapor into the compressor; an oil separator, the oil separator being connected to the compressor via a third delivery pipe and being used for separating oil and refrigerant vapor inside the compressor; An air-cooled condenser, wherein the air-cooled condenser is connected to the oil separator through a fourth delivery pipe, and is used to re-condense the separated refrigerant vapor to form a refrigerant liquid; the air-cooled condenser is provided with heat exchange tubes, heat exchange fins, a guide box, a driving mechanism and a cleaning mechanism, the guide boxes are distributed in parallel inside the air-cooled condenser, heat exchange tubes are distributed between two adjacent guide boxes in the same horizontal plane, the heat exchange tubes are all provided with the heat exchange fins, the heat exchange tubes are provided between two upper and lower adjacent guide boxes, a water tank is provided on the top of the air-cooled condenser, the water tank is connected to the cleaning mechanism through a hose, the driving mechanism is connected to the cleaning mechanism, and the cleaning mechanism moves along the inside of the air-cooled condenser to clean the heat exchange tubes and the heat exchange fins; a liquid accumulator, the liquid accumulator being connected to the air-cooled condenser via a fifth delivery pipe and being used for storing the refrigerant liquid; and a drying filter, wherein the drying filter is connected to the liquid storage device and the cold storage through a sixth delivery pipe and a seventh delivery pipe respectively, and is used for drying impurities and moisture in the refrigerant liquid and supplying the refrigerant liquid back to the cold storage.

2. A low-temperature single-unit piston unit with an air-cooled condenser and a liquid receiver according to claim 1, characterized in that: The liquid storage device is a horizontal liquid storage device.

3. A low-temperature single-unit piston unit with an air-cooled condenser and a liquid receiver according to claim 1, characterized in that: It also includes a bracket, and the gas-liquid separator, the oil separator, the air-cooled condenser and the liquid storage device are all installed on the bracket.

4. A low-temperature single-unit piston unit with an air-cooled condenser and a liquid receiver according to claim 1, characterized in that: The cleaning mechanism comprises an upper movable plate, a lower movable plate, a second motor, a rotating shaft and a cleaning rod, a guide groove is provided on the inner wall of the air-cooled condenser, the upper movable plate and the lower movable plate move along the guide groove through a limit bar, the upper movable plate is fixedly connected to the lower movable plate through a side plate, the second motor and the second baffle are arranged on the top surface of the upper movable plate, the second motor is connected to the second baffle through the rotating shaft, the cleaning rods are evenly arranged between the upper movable plate and the lower movable plate, a brush is provided on the outer circumferential side surface of the cleaning rod, the top end of the cleaning rod passes through the upper movable plate, and the cleaning rod is connected to the rotating shaft through a bevel gear set.

5. A low-temperature single-unit piston unit with an air-cooled condenser and a liquid receiver according to claim 4, characterized in that: The driving mechanism includes a first motor, a screw and a first baffle. The first motor and the first baffle are arranged in the air-cooled condenser. The first motor is connected to the first baffle through the screw. A booster block is provided on the bottom surface of the upper movable plate, and the screw is connected to the booster block.

6. A low-temperature single-unit piston unit with an air-cooled condenser and a liquid receiver according to claim 4, characterized in that: Spray pipes are symmetrically arranged on both sides of the upper movable plate, and a water inlet pipe is arranged on the top surface of the upper movable plate, and the water inlet pipes are respectively connected with the spray pipes and the hose.

7. A low-temperature single-unit piston unit with an air-cooled condenser and a liquid receiver according to claim 4, characterized in that: Rollers are arranged on the bottom surface of the lower movable plate.

8. A low-temperature single-unit piston unit with an air-cooled condenser and a liquid receiver according to claim 1, characterized in that: A water collection tank is provided at the bottom of the air-cooled condenser, and a water outlet hole is provided on the water collection tank.

9. A low-temperature single-unit piston unit with an air-cooled condenser and a liquid receiver according to claim 1, characterized in that: An air inlet and an air outlet are respectively arranged on both sides of the air-cooled condenser, a fan, a first filter and a protective cover are arranged at the air inlet, and a second filter is arranged at the air outlet.

Images