Screw structure for air conditioner compressor

Abstract

The screw structure comprises a male rotor and a female rotor, the two ends of the male rotor and the two ends of the female rotor are connected with rotating rods, and the outer side of the male rotor and the outer side of the female rotor are sleeved with a shell. The shell is connected with a cover body; the shell and the cover body are symmetrically arranged; the two sides of the shell and the two sides of the cover are each provided with a notch matched with the corresponding rotating rod. Sealing grooves are formed in the fitting surfaces of the shell and the cover body; a sealing strip is connected to the sealing groove in the shell; the shell and the cover body are connected with connecting plates; threaded holes which are communicated with each other are formed in the two connecting plates; and the shell and the cover body are fixedly connected through a connecting plate. According to the utility model, the rotors are placed in the shell, the two connecting plates are inserted through the slots, and the two connecting plates are fixedly connected through the connecting screws, so that the shell and the cover body are tightly attached, and the integrity of the two rotors is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning compressors, in particular to a screw structure used for air-conditioning compressors. Background Art

[0002] The screw air compressor is a type of positive displacement compressor. The air is compressed by the volume change of the teeth of the yin and yang rotors that mesh with each other in parallel in the casing. The yin and yang rotors rotate in the casing that precisely matches them, causing the gas between the rotor teeth to continuously produce periodic volume changes and be pushed from the suction side to the discharge side along the rotor axis, completing the three working processes of suction, compression, and exhaust.

[0003] However, the rotor in the existing air compressor is placed in the compressor housing and needs to be installed separately, which makes the disassembly and assembly complicated, and the sealing of the rotor part cannot be guaranteed. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art and proposes a screw structure for an air-conditioning compressor.

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

[0006] A screw structure for an air-conditioning compressor comprises a male rotor and a female rotor, wherein both ends of the male rotor and the female rotor are connected with rotating rods, and a shell is sleeved on the outer side of the male rotor and the female rotor; a cover body is connected to the shell; the shell and the cover body are symmetrically arranged; and notches matching the rotating rod are provided on both sides of the shell and the cover body; sealing grooves are provided on the fitting surfaces of the shell and the cover body; and a sealing strip is connected to the sealing groove on the shell; connecting plates are connected to the shell and the cover body; two connecting plates are provided with interconnecting threaded holes; and the shell and the cover body are fixedly connected by the connecting plate.

[0007] Preferably, the connecting plate is provided with a connecting groove communicating with the notch; and the diameter of the connecting groove matches the rotating rod.

[0008] Preferably, a limiting block is connected to the connecting plate fixedly connected to the shell; a slot matching the limiting block is provided on the connecting plate fixedly connected to the cover body; and the two connecting plates are plugged and fixed by the limiting block.

[0009] Preferably, the threaded holes are arranged at the four corners of the connecting plate; an annular groove is provided on the connecting plate; the annular groove is sleeved at the opening of the threaded hole; and the diameter of the annular groove is not less than the diameter of the threaded hole.

[0010] Preferably, adjacent surfaces of the two connecting plates are provided with annular grooves; and a sealing ring is connected to the annular groove on the shell.

[0011] Preferably, the sealing groove is circumferentially arranged on adjacent surfaces and notches of the shell and the cover; and the sealing groove is trapezoidal.

[0012] Compared with the prior art, the utility model provides a screw structure for an air-conditioning compressor, which has the following beneficial effects:

[0013] The screw structure for the air-conditioning compressor places a rotor in a shell, plugs two connecting plates through slots, and connects the two connecting plates with screws for fixed connection, so that the shell and the cover body fit tightly together to ensure the integrity of the two rotors; at the same time, a sealing strip is provided between the shell and the cover body to ensure the sealing between the shell and the cover body, and a sealing ring is added at the threaded hole to facilitate the use of the rotor while enhancing the overall sealing effect.

[0014] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a partial structural schematic diagram of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the cover body of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the connecting plate of the utility model;

[0020] Figure 6 It is a structural schematic diagram of another connecting plate of the utility model.

[0021] In the figure: 10, male rotor; 11, female rotor; 12, rotating rod; 20, housing; 21, cover; 22, sealing groove; 23, sealing strip; 24, notch; 31, connecting plate; 32, connecting groove; 33, limit block; 34, slot; 35, threaded hole; 36, annular groove; 37, sealing ring. DETAILED DESCRIPTION

[0022] The following will refer to Figure 1-6, the specific implementation of the screw structure for the air-conditioning compressor in the utility model is introduced, including a male rotor 10 and a female rotor 11, and the two ends of the male rotor and the female rotor are connected with a rotating rod 12, and the outer side of the male rotor and the female rotor is sleeved with a shell 20; the shell 20 is connected with a cover body 21; the shell 20 and the cover body 21 are symmetrically arranged; and both sides of the shell 20 and the cover body 21 are provided with notches 24 matching the rotating rod 12; to ensure the sealing performance after the shell 20 and the cover body 21 are connected, the fitting surfaces of the shell 20 and the cover body 21 are provided with sealing grooves 22; and the sealing strip 23 is connected to the sealing groove 22 on the shell 20; to facilitate the tight connection between the shell 20 and the cover body 21, the shell 20 and the cover body 21 are connected with connecting plates 31; the two connecting plates 31 are provided with interconnecting threaded holes 35; the shell 20 and the cover body 21 are fixedly connected by connecting bolts of the connecting plate 31.

[0023] In order to be suitable for the rotor, a connecting groove 32 communicating with the notch 24 is provided on the connecting plate 31 ; and the diameter of the connecting groove 32 matches the rotating rod 12 .

[0024] To facilitate the connection between the two connecting plates 31, a limiting block 33 is connected to the connecting plate 31 fixedly connected to the shell 20; a slot 34 matching the limiting block 33 is provided on the connecting plate 31 fixedly connected to the cover body 21; the two connecting plates 31 are plugged and fixed by the limiting block 33. When in use, the two connecting plates 31 can be plugged and matched and then bolted.

[0025] The threaded holes 35 are arranged at the four corners of the connecting plate 31; in order to ensure the closedness of the screw connection, an annular groove 36 is provided on the connecting plate 31; the annular groove 36 is sleeved at the opening of the threaded hole 35; and the diameter of the annular groove 36 is not less than the diameter of the threaded hole 35; and the adjacent surfaces of the two connecting plates 31 are provided with annular grooves 36; and a sealing ring 37 is connected to the annular groove 36 located on the shell 20; the sealing groove 22 is arranged around the adjacent surfaces of the shell 20 and the cover body 21 and the notch 24; and the sealing groove 22 is trapezoidal; the overall sealing is increased by arranging the sealing ring 37 to ensure the normal use of the rotors.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screw structure for an air-conditioning compressor, comprising a male rotor (10) and a female rotor (11), wherein both ends of the male rotor and the female rotor are connected to a rotating rod (12), characterized in that: The outer sides of the male rotor and the female rotor are sleeved with a shell (20); a cover body (21) is connected to the shell (20); the shell (20) and the cover body (21) are symmetrically arranged; and notches (24) matching the rotating rod (12) are provided on both sides of the shell (20) and the cover body (21); sealing grooves (22) are provided on the mating surfaces of the shell (20) and the cover body (21); and a sealing strip (23) is connected to the sealing groove (22) on the shell (20); connecting plates (31) are connected to the shell (20) and the cover body (21); two connecting plates (31) are provided with interconnecting threaded holes (35); and the shell (20) and the cover body (21) are fixedly connected via the connecting plates (31).

2. A screw structure for an air-conditioning compressor according to claim 1, characterized in that: The connecting plate (31) is provided with a connecting groove (32) which is in communication with the notch (24); and the diameter of the connecting groove (32) matches that of the rotating rod (12).

3. The screw structure for an air-conditioning compressor according to claim 1, characterized in that: The connection plate (31) fixedly connected to the housing (20) is connected to a limiting block (33); the connection plate (31) fixedly connected to the cover body (21) is provided with a slot (34) matching the limiting block (33); the two connection plates (31) are plugged and fixed via the limiting blocks (33).

4. The screw structure for an air-conditioning compressor according to claim 1, characterized in that: The threaded holes (35) are arranged at four corners of the connecting plate (31); an annular groove (36) is provided on the connecting plate (31); the annular groove (36) is sleeved at the opening of the threaded hole (35); and the diameter of the annular groove (36) is not less than the diameter of the threaded hole (35).

5. The screw structure for an air-conditioning compressor according to claim 1, characterized in that: Adjacent surfaces of the two connecting plates (31) are each provided with an annular groove (36); and a sealing ring (37) is connected to the annular groove (36) located on the housing (20).

6. The screw structure for an air-conditioning compressor according to claim 1, characterized in that: The sealing groove (22) is arranged around the shell (20) and the cover (21). On the adjacent surface and the notch (24); and the sealing groove (22) is trapezoidal.

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