Evacuating and gas injecting device of refrigerating system

Abstract

The utility model discloses an evacuating and gas injecting device of a refrigerating system, which comprises the refrigerating system and a controller, the refrigerating system is connected with a three-way pipe, two ends of the three-way pipe are provided with connecting flanges, one end of one connecting flange is connected with an evacuating pipeline, one end of the other connecting flange is connected with a gas injecting pipeline, and the other end of the connecting flange is connected with a gas injecting pipeline. An evacuation unit is arranged at one end of the evacuation pipeline, a gas injection unit is arranged at one end of the gas injection pipeline, two connecting sleeves are arranged on the surface of the connecting flange, connecting plates are arranged on the two sides of each connecting sleeve, and mounting plates are fixedly connected to the upper ends of the two connecting sleeves; fixing bolts are arranged in the two mounting plates, and the outer surfaces of the fixing bolts are in threaded connection with self-locking pieces. By arranging a connecting plate, a connecting sleeve, a mounting plate, a fixing bolt, a self-locking piece and a sealing gasket, the connecting flange can be conveniently mounted in a sealed mode, meanwhile, dismounting is convenient, and later-period dismounting of the three-way pipe is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuuming and gas injection equipment for refrigeration systems, in particular to a vacuuming and gas injection device for refrigeration systems. Background Art

[0002] The evacuation and gas injection of the refrigeration system of the existing air conditioner or refrigerator are independent valves. It is necessary to use manpower to remove the evacuation valve after evacuation and then install the gas injection valve. The vacuum degree of the air conditioner will be affected during the valve replacement process, resulting in low refrigeration capacity and high power of the air conditioner, affecting energy efficiency. The evacuation and gas injection device of the refrigeration system with application number "CN202320150291.7" connects the evacuation unit and the filling unit to the refrigeration system through an intermediate connector. The intermediate connector is connected to the refrigeration system through a quick-connect connector. The intermediate connector and the evacuation unit, the filling unit and the refrigeration system can be selectively connected, so that the refrigeration system can be in an evacuation state or a gas injection state, thereby avoiding the reduction of the vacuum degree of the refrigeration system due to manual removal of the evacuation valve in the prior art, thereby affecting the refrigeration capacity of the refrigeration system.

[0003] However, when the above solution is used, the intermediate connector is connected to the pipeline through the flange connection end. However, after long-term use, the flange connection end of the intermediate connector needs to be repaired and replaced, and the screws on the flange connection end need to be removed one by one, which is time-consuming and laborious. Utility Model Content

[0004] The purpose of the utility model is to provide a vacuum gas injection device for a refrigeration system, which can solve the problem that the screws on the flange connection end need to be removed one by one, which is time-consuming and labor-intensive.

[0005] To achieve the above-mentioned purpose, a vacuuming and gas injection device for a refrigeration system is provided, comprising: a refrigeration system and a controller, wherein the refrigeration system is connected to a three-way pipe, and connecting flanges are arranged at both ends of the three-way pipe, one end of one of the connecting flanges is connected to a vacuuming pipeline, and one end of the other connecting flange is connected to a gas injection pipeline, one end of the vacuuming pipeline is provided with a vacuuming unit, one end of the gas injection pipeline is provided with a gas injection unit, and the interior of the three-way pipe is provided with a vacuuming valve and a gas injection valve;

[0006] Two connecting sleeves are arranged on the surface of the connecting flange, connecting plates are arranged on both sides of the connecting sleeves, the upper ends of the two connecting sleeves are fixedly connected with mounting plates, fixing bolts are arranged inside the two mounting plates, and the outer surfaces of the fixing bolts are threadedly connected with self-locking parts.

[0007] According to the evacuation and gas injection device for a refrigeration system, the connecting sleeve is rotatably connected to the connecting plate.

[0008] According to the evacuation and gas injection device for a refrigeration system, one side of each of the two connecting sleeves is fixedly connected with a sealing gasket.

[0009] According to the evacuation and gas injection device for a refrigeration system, the evacuation unit is an air extraction pump.

[0010] According to the evacuation and gas injection device for a refrigeration system, the gas injection unit is a gas injection tank.

[0011] The purpose of the utility model is to provide a vacuum gas injection device for a refrigeration system, the main innovations are:

[0012] 1. The vacuum gas injection device of the refrigeration system is convenient for sealing and installing the connecting flange by arranging a connecting plate, a connecting sleeve, a mounting plate, fixing bolts, a self-locking part, and a sealing gasket, and is convenient for disassembly, and also convenient for disassembly of the tee pipe at a later time.

[0013] 2. The evacuation and gas injection device of the refrigeration system facilitates the evacuation or gas injection state of the refrigeration system by setting a three-way pipe, a gas injection valve and an evacuation valve, thereby avoiding the reduction of the vacuum degree of the refrigeration system due to manual removal of the evacuation valve in the prior art, thereby affecting the refrigeration capacity of the refrigeration system.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1 A three-dimensional diagram of an evacuation and gas injection device for a refrigeration system proposed by the utility model;

[0017] Figure 2 This is a structural schematic diagram of a connecting flange and a connecting sleeve of a vacuum gas injection device for a refrigeration system proposed by the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the structure of the fixing bolts of the evacuation and gas injection device of the refrigeration system.

[0019] Legend:

[0020] 1. Evacuation unit; 2. Gas injection unit; 3. Refrigeration system; 4. Evacuation pipeline; 5. Gas injection pipeline; 6. Tee pipe; 7. Connecting flange; 8. Controller; 9. Evacuation valve; 10. Gas injection valve; 11. Connecting plate; 12. Connecting sleeve; 13. Mounting plate; 14. Fixing bolts; 15. Self-locking parts; 16. Sealing gasket. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-3 The utility model embodiment is a vacuuming and gas injection device for a refrigeration system, which includes a refrigeration system 3 and a controller 8. The refrigeration system 3 is connected to a three-way pipe 6. Both ends of the three-way pipe 6 are provided with connecting flanges 7. One end of one connecting flange 7 is connected to a vacuuming pipeline 4, and one end of the other connecting flange 7 is connected to a gas injection pipeline 5. One end of the vacuuming pipeline 4 is provided with a vacuuming unit 1, and one end of the gas injection pipeline 5 is provided with a gas injection unit 2. The interior of the three-way pipe 6 is provided with a vacuuming valve 9 and a gas injection valve 10. By providing the three-way pipe 6, the gas injection valve 10, and the vacuuming valve 9, it is convenient to realize that the refrigeration system 3 is in a vacuuming state or a gas injection state, thereby avoiding the reduction of the vacuum degree of the refrigeration system 3 due to manual removal of the vacuuming valve in the prior art, thereby affecting the refrigeration capacity of the refrigeration system 3;

[0023] Two connecting sleeves 12 are provided on the surface of the connecting flange 7, and connecting plates 11 are provided on both sides of the connecting sleeves 12. The upper ends of the two connecting sleeves 12 are fixedly connected with mounting plates 13, and fixing bolts 14 are provided inside the two mounting plates 13. The outer surfaces of the fixing bolts 14 are threadedly connected with self-locking parts 15. By arranging the connecting plates 11, connecting sleeves 12, mounting plates 13, fixing bolts 14, self-locking parts 15 and sealing gaskets 16, it is convenient to seal and install the connecting flange 7, and it is also convenient to disassemble, which facilitates the disassembly of the tee pipe 6 at a later time.

[0024] The connecting sleeve 12 is rotatably connected to the connecting plate 11, and a sealing gasket 16 is fixedly connected to one side of the two connecting sleeves 12. The evacuation unit 1 is an air pump, and the air injection unit 2 is an air injection tank.

[0025] Working principle: This evacuation and gas injection device for a refrigeration system is composed of a connecting sleeve 12 mounted on the surface of a connecting flange 7, a fixing bolt 14 inserted into a connecting plate 13, a self-locking piece 15 screwed on the surface of the fixing bolt 14, and one end of the fixing bolt 14 is fixed so that it does not rotate. The self-locking piece 15 is then turned to rotate the connecting sleeve 12 and seal and fix the connecting flange 7. When in use, under the control of a controller 8, the gas injection valve 10 is opened and the evacuation valve 9 is closed to achieve gas injection, and the gas evacuation is achieved by closing the gas injection valve 10 and opening the evacuation valve 9.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A vacuum gas injection device for a refrigeration system, characterized in that: include: A refrigeration system (3) and a controller (8), wherein the refrigeration system (3) is connected to a three-way pipe (6), both ends of the three-way pipe (6) are provided with connecting flanges (7), one end of one of the connecting flanges (7) is connected to an evacuation pipe (4), and one end of the other connecting flange (7) is connected to an injection pipe (5), one end of the evacuation pipe (4) is provided with an evacuation unit (1), one end of the injection pipe (5) is provided with an injection unit (2), and an evacuation valve (9) and an injection valve (10) are provided inside the three-way pipe (6); Two connecting sleeves (12) are arranged on the surface of the connecting flange (7), connecting plates (11) are arranged on both sides of the connecting sleeves (12), the upper ends of the two connecting sleeves (12) are fixedly connected with mounting plates (13), fixing bolts (14) are arranged inside the two mounting plates (13), and the outer surfaces of the fixing bolts (14) are threadedly connected with self-locking parts (15).

2. The evacuation and gas injection device for a refrigeration system according to claim 1, characterized in that: The connecting sleeve (12) is rotatably connected to the connecting plate (11).

3. The evacuation and gas injection device for a refrigeration system according to claim 1, characterized in that: One side of the two connecting sleeves (12) is fixedly connected with a sealing gasket (16).

4. The evacuation and gas injection device for a refrigeration system according to claim 1, characterized in that: The evacuation unit (1) is an air pump.

5. The evacuation and gas injection device for a refrigeration system according to claim 1, characterized in that: The gas injection unit (2) is a gas injection tank.

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