CN217421480U

CN217421480U - Automobile air conditioner compressor rear cover based on Tesla valve

Info

Publication number: CN217421480U
Application number: CN202221111505.1U
Authority: CN
Inventors: 郑�勋; 韦村; 张文裕; 郭军涛; 谢运富; 蒋延桂
Original assignee: Guangxi Guangyu New Energy Automobile Air Conditioning Compressor Co ltd
Current assignee: Guangxi Guangyu New Energy Automobile Air Conditioning Compressor Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-09-13
Anticipated expiration: 2032-05-09

Abstract

The utility model relates to a car air conditioner compressor back cover based on tesla valve, including the back cover main part, the terminal surface depression that back cover main part and compressor cylinder body are connected is equipped with the exhaust chamber, and the back cover main part outside is equipped with the exhaust passage who communicates with the exhaust chamber; at least 3 Tesla valve units are arranged in the exhaust cavity, the Tesla valve units are arranged in an annular array by taking the central axis of the rear cover main body as a circle center, and the exhaust cavity between the adjacent Tesla valve units extends towards one side of the circle center of the rear cover main body to form an air inlet cavity; the exhaust passage is equipped with the cushion chamber with the exhaust chamber junction, the cushion chamber is to keeping away from exhaust chamber one side extension and with exhaust chamber intercommunication. The utility model discloses utilize the theory of operation of tesla valve, make the high-pressure mist in the back lid of discharging circulate along a direction, reduce the energy loss in the exhaust process, avoid high-pressure mist air current pulsation to produce the noise, eliminate air conditioning system abnormal sound.

Description

Automobile air conditioner compressor rear cover based on Tesla valve

Technical Field

The utility model belongs to the technical field of vehicle air conditioner compressor, a vehicle air conditioner compressor's back lid is related to, in particular to lid behind vehicle air conditioner compressor based on tesla valve.

Background

As shown in fig. 1, in a conventional piston type automotive air conditioning compressor, a main shaft 101 drives a swash plate 104 to rotate under the action of external power, and then drives a shoe 105 to drive a piston 106 to reciprocate in a cylinder hole of a rear cylinder block 102, so as to achieve the suction, compression, expansion and exhaust functions of the compressor, and generated high-pressure gas enters an air conditioning system pipeline from an exhaust port of a rear cover 103 to achieve heat exchange.

In an automobile air conditioning system, an air conditioning compressor periodically sucks and exhausts air, and a suction and exhaust valve sheet is also periodically opened and closed, so that the speed and pressure of refrigerant mixed gas in a pipeline are also periodically changed, and the periodic change of the speed and pressure of the gas is called as airflow pulsation in engineering technology. The traditional solution is that a helmholtz silencer, a pore plate, a sound insulation pad and a liquid storage tank are arranged on a low-pressure pipeline of the air conditioning system, and components such as an airflow pulsation attenuator are added to eliminate abnormal sound, but the effect is not obvious, and the complexity and the production cost of the air conditioning system are increased.

Disclosure of Invention

The utility model aims at providing a lid behind vehicle air conditioner compressor based on tesla valve, its theory of operation that utilizes tesla valve makes the high-pressure gas mixture who discharges into in the back lid along a direction circulation, reduces the energy loss in the exhaust process, avoids high-pressure gas mixture air current pulsation to produce the noise, eliminates air conditioning system abnormal sound, the effectual problem that prior art exists of having solved.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a rear cover of an automobile air conditioner compressor based on a Tesla valve comprises a rear cover main body, wherein an exhaust cavity is concavely arranged on the end surface of the rear cover main body connected with a compressor cylinder body, and an exhaust channel communicated with the exhaust cavity is arranged on the outer side of the rear cover main body; the exhaust cavity is internally provided with at least 3 Tesla valve units, the Tesla valve units are arranged in an annular array with the central axis of the rear cover main body as the circle center, and the exhaust cavity between the adjacent Tesla valve units extends towards one side of the circle center of the rear cover main body to be provided with an air inlet cavity.

The utility model discloses a further technical scheme is: the exhaust passage is equipped with the cushion chamber with the exhaust chamber junction, the cushion chamber is to keeping away from exhaust chamber one side extension and with exhaust chamber intercommunication.

The utility model discloses a further technical scheme is: and 5 Tesla valve units are arranged in the exhaust cavity.

The utility model relates to a lid has following beneficial effect owing to adopt above-mentioned structure behind vehicle air conditioner compressor based on tesla valve:

1. the utility model discloses a set up a plurality of tesla valve units in the exhaust chamber of compressor rear cover, utilize the theory of operation of tesla valve, make the high-pressure gas mixture who discharges into in the rear cover circulate along a direction, reduce the energy loss in the exhaust process, avoid high-pressure gas mixture air current pulsation to produce the noise, eliminate air conditioning system abnormal sound;

2. the utility model discloses an exhaust passage is equipped with the cushion chamber with the chamber junction that exhausts for exhaust passage's air inlet department is the toper, and high-pressure gas mixture can get into exhaust passage by toper air inlet both sides, improves high-pressure gas mixture's velocity of flow.

The following describes a rear cover of a compressor of an air conditioner for a vehicle based on a tesla valve with reference to the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic diagram of a conventional piston type automotive air conditioning compressor;

fig. 2 is a schematic perspective view of a rear cover of an automotive air conditioning compressor based on a tesla valve according to the present invention;

FIG. 3 is a front view of the rear cover of the compressor of the air conditioner for a vehicle based on a Tesla valve of the present invention;

FIG. 4 is a schematic flow diagram of the high pressure mixed gas discharged into the exhaust chamber;

FIG. 5 is an enlarged view at A in FIG. 4;

FIG. 6 is a schematic view of the counterclockwise high pressure mixed gas stream P of FIG. 5 with the flow direction changed to the aft direction;

the reference numbers illustrate: 1-rear cover main body, 2-exhaust cavity, 3-exhaust channel, 4-Tesla valve unit, 5-air inlet cavity, 6-buffer cavity, 101-main shaft, 102-rear cylinder block, 103-rear cover, 104-inclined plate, 105-slipper and 106-piston;

wherein: arrow K is the high pressure mixed gas flow in a clockwise direction and arrow P is the high pressure mixed gas flow in a counter-clockwise direction.

Detailed Description

As shown in fig. 2 to 6, the utility model relates to a car air conditioner compressor back cover based on tesla valve, which comprises a back cover main body 1, wherein the end surface of the side of the back cover main body 1 connected with the compressor cylinder body is provided with an exhaust cavity 2 in a concave manner, and the outer side of the back cover main body 1 is provided with an exhaust passage 3 communicated with the exhaust cavity 2; at least 3 tesla valve units 4 are arranged in the exhaust cavity 2, and in the embodiment, 5 tesla valve units 4 are arranged in the exhaust cavity 2; of course, in actual practice, the number of tesla valve units 4 may be set according to the actual size of the rear cover.

The utility model discloses a tesla valve unit 4 is the setting of centre of a circle annular array with the axis of hou gai main part 1, exhaust chamber 2 between the adjacent tesla valve unit 4 extends to the centre of a circle one side of hou gai main part 1 and is equipped with the chamber of admitting air 5, chamber 5 of admitting air docks with back cylinder body 102 respectively, the high-pressure mist after the compression gets into exhaust chamber 2 by the chamber 5 of admitting air in the back cylinder body 102, and utilize the theory of operation of tesla valve to make the high-pressure mist that gets into in the exhaust chamber 2 circulate to exhaust passage 3 along an orientation, reduce the energy loss in the exhaust process, avoid high-pressure mist air current pulsation to produce the noise, eliminate air conditioning system abnormal sound.

Additionally, the utility model discloses an exhaust passage 3 is equipped with cushion chamber 6 with 2 junctions in exhaust chamber, cushion chamber 6 to keeping away from exhaust chamber 2 one side extend and with exhaust chamber 2 intercommunication, cushion chamber 6 and exhaust chamber 2 are located exhaust passage 3 both sides respectively promptly for exhaust passage 3's air inlet department is the toper, and high-pressure mist can get into exhaust passage 3 by toper air inlet both sides, improves high-pressure mist's velocity of flow.

As shown in fig. 4, after the high-pressure mixed gas compressed in the rear cylinder 102 enters the intake chamber 5, a high-pressure mixed gas flow K in a clockwise direction and a high-pressure mixed gas flow P in a counterclockwise direction are generated.

According to the principle of a Tesla valve, when the discharged high-pressure mixed gas flows clockwise, the fluid is converged, and the flow velocity of the converged flow is increased along with the reduction of the contact area, and the acceleration means the pressure reduction along the flow direction; when the discharged high-pressure mixed gas flows counterclockwise, the fluid is divergent, the pressure increases along the flow direction, and this pressure rise condition is called an adverse pressure gradient, which is called an adverse condition because the flow velocity of the fluid micro-cluster is reduced as the pressure increases along the flow direction, and then a backflow is formed after flowing for a certain distance, and the backflow further causes vortex and energy loss. Simply speaking, divergent flow is difficult to maintain and experiences much greater resistance than convergent flow.

As shown in fig. 5, after the high-pressure mixed air flow K in the clockwise direction enters the tesla valve unit, the high-pressure mixed air flow K is divided into a clockwise main flow K1 and a clockwise sub-flow K2, and it is obvious that the flow rate of the clockwise sub-flow K2 is small because the fluid of the clockwise sub-flow K2 must pass through an unnecessary curved path to reach the mixing point B, that is, most of the fluid is trapped by the clockwise main flow K1 and undergoes a small obstruction to flow nearly straight to the mixing point B; after entering the tesla valve unit, the high-pressure mixed gas flow P with the counterclockwise direction is divided into two parts, namely a counterclockwise main flow P1 and a counterclockwise branch flow P2, on the basis of a divergent flow.

As analyzed above, when the fluid flows counterclockwise, the fluid is divergent, an adverse pressure gradient is generated, the fluid forms a backflow after flowing for a certain distance, as shown in fig. 6, the counterclockwise branch P2 adjusts the flow direction after flowing to the mixing point B, and the flow is turned by about 180 degrees to be mixed with the high-pressure mixed airflow K flowing clockwise at the mixing point B, so as to form a clockwise airflow; since the high-pressure mixed airflow P flowing counterclockwise is a divergent flow, the counterclockwise main airflow P1 loses a certain energy when flowing to the mixing point B, and changes the flow direction by 180 degrees after being mixed with the high-pressure mixed airflow K flowing clockwise to form a clockwise airflow. According to the principle, the high-pressure mixed gas entering the rear cover flows in one direction under the action of the Tesla valve, so that the energy loss in the exhaust process is reduced, the noise generated by the airflow pulsation of the high-pressure mixed gas is avoided, and the abnormal sound of an air conditioning system is eliminated.

The above embodiments are only preferred embodiments of the present invention, the structure of the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. A rear cover of an automobile air conditioner compressor based on a Tesla valve comprises a rear cover main body (1), wherein an exhaust cavity (2) is concavely arranged on the end surface of the rear cover main body (1) connected with a compressor cylinder body, and an exhaust channel (3) communicated with the exhaust cavity (2) is arranged on the outer side of the rear cover main body (1); the method is characterized in that: be equipped with in the exhaust chamber (2) and be equipped with 3 tesla valve unit (4) at least, just tesla valve unit (4) are the setting of centre of a circle annular array with the axis of lid main part (1) after, and exhaust chamber (2) between adjacent tesla valve unit (4) are equipped with air inlet chamber (5) to the extension of the centre of a circle one side of back lid main part (1).

2. The tesla valve-based automotive air conditioning compressor rear cover according to claim 1, characterized in that: exhaust passage (3) and exhaust chamber (2) junction are equipped with cushion chamber (6), cushion chamber (6) extend and communicate with exhaust chamber (2) to keeping away from exhaust chamber (2) one side.

3. The tesla valve-based automotive air conditioning compressor rear cover according to any one of claims 1 or 2, characterized in that: and 5 Tesla valve units (4) are arranged in the exhaust cavity (2).