CN107829901A - A kind of automobile air conditioner compressor suction and exhaust structure - Google Patents

Abstract

The invention discloses a suction and exhaust structure of an automobile air-conditioning compressor, which comprises a cylinder body, a main shaft, a swash plate, a rear cover and a piston. A valve plate is arranged between the body, the valve plate is provided with a valve plate hole communicating with the through hole of the cylinder body, the valve plate hole is connected with the low pressure cavity of the back cover, and the main shaft is close to one end of the back cover A hollow part is provided, an air suction port is opened on the hollow part, a communication hole is opened at the rear end of the cylinder bore, and a valve plate exhaust hole is opened on the valve plate to communicate with the high-pressure chamber of the back cover. The suction and exhaust structure of the above-mentioned automotive air-conditioning compressor has an air intake passage processed on the main shaft and the cylinder body, and the installation of the suction valve plate can be eliminated, which not only simplifies the installation process, improves production efficiency; Failure, improve the service life of the compressor.

Description

Suction and discharge structure of automobile air-conditioning compressor

technical field

The automobile air-conditioning compressor of the present invention particularly relates to a suction and discharge structure of the automobile air-conditioning compressor.

Background technique

Automobile air-conditioning compressor is composed of clutch, front cover, cylinder block, rear cover, swash plate shaft parts, pistons, sliding shoes, suction and exhaust parts, etc. The power is output to the clutch through the automobile engine. After the clutch is energized, the swash plate shaft assembly is driven to rotate, and the piston sliding shoes reciprocate under the drive of the swash plate. The components control the entry and exit of high-temperature and high-pressure gas and low-temperature and low-pressure gas, so that the gas circulates, and cooling and heating are realized through the condenser, evaporator, expansion valve and pipelines of the air conditioning system. The engine speed of the car is normally running at 1800 rpm, so the compressor speed is also around 1800 rpm, so the suction and exhaust valves need to be opened and closed about 1800 times per minute. The mechanical properties of its materials are very high. Once the suction and exhaust valves are damaged, it cannot open and close the suction and exhaust, and the gas will not flow, making the air conditioning system unable to cool and heat.

Contents of the invention

The object of the present invention is to provide a suction and discharge structure of an automobile air-conditioning compressor to solve the problem in the prior art that the suction and discharge valves of the automobile air-conditioning compressor need to be frequently switched on and off.

For reaching this purpose, the present invention adopts following technical scheme:

An automobile air-conditioning compressor suction and exhaust structure, which includes a cylinder block, a main shaft, a swash plate, a back cover and a piston, the swash plate is fixed on the main shaft, the back cover is fixed on the rear end of the cylinder body, and the The piston can be reciprocatingly arranged in the cylinder hole of the cylinder body, the swash plate is connected to the piston in transmission, wherein a cylinder through hole is opened on the cylinder body, and the rear cover is connected to the cylinder body A valve plate is arranged between the body, the valve plate is provided with a valve plate hole communicating with the through hole of the cylinder body, the valve plate hole is connected with the low pressure cavity of the back cover, and the main shaft is close to one end of the back cover A hollow part is provided, an air suction port is opened on the hollow part, a communication hole is opened at the rear end of the cylinder hole, and a valve plate exhaust hole is opened on the valve plate to communicate with the high-pressure chamber of the back cover. When the piston moves upwards for exhaust, the suction port is not connected to the communication hole, and when the piston moves downward for suction, the suction port communicates with the inclined hole communication hole.

In particular, the suction port adopts a square hole.

In particular, the communication holes are oblique holes.

In particular, the cylinder adopts a split structure, including a connected front cylinder and a rear cylinder.

The beneficial effect of the present invention is that, compared with the prior art, the suction and exhaust structure of the automobile air-conditioning compressor has an intake passage processed on the main shaft and the cylinder body, and the installation of the suction valve plate can be eliminated, which not only simplifies the installation process, but also Improve production efficiency; and reduce the failure of the compressor caused by the problem of the valve plate, and improve the service life of the compressor.

Description of drawings

Fig. 1 is the structural representation of the suction and discharge structure of the automobile air-conditioning compressor provided by the specific embodiment of the present invention;

Fig. 2 is a structural schematic diagram of the main shaft of the suction and discharge structure of the automobile air-conditioning compressor provided by the specific embodiment of the present invention.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

Please refer to Fig. 1 and Fig. 2, in the present embodiment, a kind of automobile air-conditioning compressor suction and discharge structure comprises front cylinder block 1, rear cylinder block 2, main shaft 3, swash plate 4, rear cover 5 and piston 6, The front cylinder body 1 and the rear cylinder body 2 are connected to form a cylinder body, a main shaft 3 and a swash plate 4 are arranged in the cylinder body, the swash plate 4 is fixed on the main shaft 3, and the rear cover 5 is fixed on the rear The rear end of the cylinder body 2, and the rear cover low-pressure chamber 50 and the rear cover high-pressure chamber 51 are arranged on the rear cover, the piston 6 can be reciprocatingly arranged in the cylinder bore 7 of the cylinder block, and the swash plate 4 is in transmission connection with the piston 6, a cylinder through hole 8 is provided on the cylinder body, a valve plate 9 is provided between the rear cover 5 and the rear cylinder body 2, and a valve plate 9 is provided on the valve plate 9 The valve plate hole 10 communicated with the cylinder body through hole 8, the valve plate hole 10 communicates with the back cover low-pressure chamber 50, the end of the main shaft 3 near the back cover 5 is provided with a hollow part 30, the hollow The air suction square hole 31 is opened on the part 30, the inclined hole 70 is opened at the rear end of the cylinder hole 7, and the valve plate exhaust hole 11 communicating with the high pressure chamber 51 of the back cover is opened on the valve plate 9.

When the piston 6 moves downward to inhale air, the low-temperature and low-pressure gas of the air-conditioning system enters the cylinder body, passes through 8 through holes 8 of the cylinder body, passes through the valve plate hole 10, reaches the low-pressure chamber 50 of the rear cover, and enters the rear of the main shaft 3 at the same time. The hollow part 30 at the end passes through the suction square hole 31 and the inclined hole 70 on the main shaft 3, and the gas is sucked into the cylinder hole 7; when the piston 6 moves upward to exhaust, the air suction square hole 31 and the inclined hole 70 on the main shaft 3 They are not connected, so that after the gas is compressed, it is discharged from the valve plate exhaust hole 11 into the high pressure chamber 51 of the back cover, and returns to the air conditioning system to complete the cycle, so that the compressor generates cooling and heating.

The above embodiments have only set forth the basic principles and characteristics of the present invention, the present invention is not limited by the above-mentioned examples, and on the premise of not departing from the spirit and scope of the present invention, the present invention also has various changes and changes, and these changes and changes all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. A car air-conditioning compressor suction and exhaust structure, which comprises a cylinder block, a main shaft, a swash plate, a back cover and a piston, the swash plate is fixed on the main shaft, and the back cover is fixed on the rear end of the cylinder body , the piston can be reciprocatingly arranged in the cylinder hole of the cylinder, the swash plate is connected with the piston transmission, it is characterized in that the cylinder through hole is opened on the cylinder, the rear cover A valve plate is arranged between the cylinder body and a valve plate hole communicated with the through hole of the cylinder body is opened on the valve plate. One end of the back cover is provided with a hollow part, and an air suction port is opened on the hollow part, a communication hole is opened at the rear end of the cylinder hole, and a valve plate row connected with the high pressure chamber of the back cover is opened on the valve plate. The air hole, when the piston moves upwards for exhaust, the suction port is not connected with the communication hole, and when the piston moves downward for suction, the suction port communicates with the inclined hole communication hole. 2. The suction and discharge structure of the automobile air-conditioning compressor according to claim 1, wherein the suction port adopts a square hole. 3. The suction and discharge structure of the automobile air-conditioning compressor according to claim 1 or 2, characterized in that the communication holes are oblique holes. 4. The suction and discharge structure of the automobile air-conditioning compressor according to claim 1, wherein the cylinder body adopts a split structure, comprising a connected front cylinder body and a rear cylinder body.