KR101755453B1

KR101755453B1 - Air-con check valve for vehicle

Info

Publication number: KR101755453B1
Application number: KR1020110074789A
Authority: KR
Inventors: 고현배
Original assignee: 현대자동차 주식회사
Priority date: 2011-07-27
Filing date: 2011-07-27
Publication date: 2017-07-07
Also published as: KR20130014652A

Abstract

A vehicle air conditioner check valve is disclosed. The air conditioner check valve for a vehicle according to an embodiment of the present invention includes a housing mounted through a flange in a suction port of an air conditioner compressor and having at least one valve hole formed on an outer circumferential surface thereof, And a resilient member mounted between the housing and the valve body for exerting an elastic force to the valve body, the valve body opening the valve hole when the valve is closed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air conditioner check valve for a vehicle, and more particularly, to a vehicle air conditioner check valve for preventing a vibration caused by a pressure difference applied to a check valve and noise.

Generally, an air conditioner system installed in a vehicle includes an expansion valve, an evaporator, a compressor, and a condenser as main components.

The expansion valve is supplied with liquid refrigerant of high temperature and high pressure and throttles, and is made into a low-temperature and low-pressure liquid refrigerant and sent to the evaporator. The evaporator evaporates the low-temperature and low-pressure refrigerant and generates cold air by the evaporation heat.

The compressor is operated by driving the engine. The low-temperature and high-pressure gaseous refrigerant discharged from the evaporator is compressed into gaseous refrigerant of high temperature and high pressure and sent to a condenser. The condensed refrigerant is returned to the high- Cooling and condensing.

The compressor is provided with a suction port through which the low-temperature low-pressure gaseous refrigerant discharged from the evaporator is sucked. A check valve 100 is mounted on the suction port, as shown in FIG.

The check valve 100 includes a housing 130 fixedly installed in the suction port and an elastic member 150 elastically supported in the housing 130 so as to be elastically supported in the longitudinal direction of the housing 130 The valve body 140 is coupled to the upper end of the housing 130 to prevent the valve body 140 from separating from the housing 130. The valve body 140 is coupled to the suction port and the housing 130, And a flange 120 connecting the flange 120 and the flange 120.

Here, the housing 130 is formed with a bottom surface in a cylindrical portion, and the cylindrical portion has a structure in which a plurality of valve holes 160 are formed at regular intervals along the circumferential direction.

The valve hole 160 has a plurality of holes having the same cross-sectional area, and they are formed at intervals of about 120 degrees.

The check valve 100 configured as described above discharges the refrigerant to the valve hole 160 as the valve body 140 is lowered by the pressure of the elastic member 150 due to the pressure of the refrigerant discharged from the evaporator, The refrigerant moves to the suction chamber of the compressor.

However, when the conventional check valve 100 is switched from the closed state to the open state, the refrigerant flowing into the check valve 100 through the flange 120 flows into the check valve 100, , So that the downward movement amount of the elastic member 150 is also weak.

Accordingly, the valve body 140 is rotated by a small gap between the lower end of the flange 120 and the upper end of the valve body 140, and the low pressure of the refrigerant and the force of the elastic member 150 collide with each other, There is a problem that noise due to the pressure difference occurs as the refrigerant is discharged.

When the check valve 100 is blocked, an external pressure is applied to the valve hole 160 and a pressure difference is generated. Due to the pressure difference applied to the valve hole 160, There is a problem that a phenomenon occurs, noise is generated, and an uncomfortable feeling is given to a passenger.

In the embodiments of the present invention, by changing the valve body mounted inside the check valve to the shape of the disk, even when the valve is shut off, the valve hole is opened and the vibration of the valve body due to the pressure difference generated in the left and right valve holes And to provide a vehicle air conditioner check valve that prevents noise from occurring.

Further, by changing the structure of the elastic member, it is possible to easily increase the load when the check valve is shut off, prevent the noise of the elastic member due to the pressure difference applied to the valve hole, Valve.

An air conditioner check valve according to an embodiment of the present invention includes a housing having a suction port of the air conditioner compressor mounted through a flange and having at least one valve hole formed on an outer circumferential surface thereof, A valve body that selectively opens and closes the valve hole and an elastic member that is mounted between the housing and the valve body and exerts an elastic force to the valve body, Can be opened.

In the above air conditioner check valve for a vehicle, the valve body may have a shape of a plate moving along the inner circumferential surface of the housing.

In the automotive air conditioner check valve, the elastic member may be formed of bellows in which the crests and valleys are continuously provided in the longitudinal direction.

In the automotive air conditioner check valve, the mountains and the valleys may be formed to have a gradually increasing width from the top to the bottom.

In the automotive air conditioner check valve, the elastic member may be formed such that the diameter of its cross section gradually increases from the upper portion to the lower portion.

In the automotive air conditioner check valve, a stopper for supporting the valve body may be formed at a lower end of the flange.

In the automotive air conditioner check valve, the flange may be formed with a fitting groove into which the upper end of the housing is fitted.

In the embodiments of the present invention, by changing the valve body mounted inside the check valve to the shape of the disk, when the valve is closed, the valve hole is opened and the valve body is shaken due to the pressure difference generated in the left and right valve holes Thereby preventing noise from occurring.

Further, by changing the structure of the elastic member, it is possible to easily increase the load when the check valve is closed, to prevent the noise of the elastic member due to the pressure difference applied to the valve hole, and to reduce the manufacturing cost with a simple structure.

1 is a cross-sectional view of a vehicle air-conditioner check valve according to the prior art.
2 is a perspective view of a vehicle air conditioner check valve according to an embodiment of the present invention.
3 is an exploded perspective view of a vehicle air conditioner check valve according to an embodiment of the present invention.
4 is a cross-sectional view of a vehicle air conditioner check valve according to an embodiment of the present invention;
5 is a cross-sectional view illustrating an open air check valve for a vehicle according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. .

4 is a cross-sectional view of a vehicle air-conditioner check valve according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view illustrating a vehicle air-conditioner check valve according to an embodiment of the present invention. Sectional view with the air conditioner check valve open.

Referring to the drawings, a vehicle air conditioner check valve 10 according to an embodiment of the present invention is mounted inside a suction port of an air conditioner compressor, so that a valve body 40 mounted inside a valve is not a conventional cap It is possible to prevent the vibration of the valve body 40 due to the pressure difference generated in the left and right valve holes 60 and thus the noise due to the opening of the valve hole 60, .

Further, by changing the structure of the elastic member 50, it is possible to easily increase the load when the valve is closed, to prevent the noise of the elastic member 50 due to the pressure difference applied to the valve hole 60, And a structure capable of reducing manufacturing costs.

The air conditioner check valve 10 according to the embodiment of the present invention includes a housing 30, a valve body 40, and an elastic member 50. The structure will be described below.

The housing 30 is mounted inside the suction port of the air conditioner compressor, and the upper end thereof is connected to the flange 20 provided at the suction port.

At least one or more valve holes 60 are formed at equal intervals on the outer circumferential surface of the housing 30, the lower end is closed, and the upper end connected to the flange 20 has an open cylindrical structure.

The valve body 40 is slidably installed in the housing 30 and selectively opens and closes the valve hole 60 formed on the outer circumferential surface of the housing 30.

This valve body 40 opens the valve hole 60 formed in the outer circumferential surface of the housing 30 when the valve is interrupted and the shape of the valve body 40 slides along the inner peripheral surface of the housing 30 And may be formed of a circular plate.

The elastic member 50 is installed between the housing 30 and the valve body 40 and exerts an elastic force to the valve body 40. [

The elastic member 50 may be in the form of a bellows whose shape is continuously provided along the longitudinal direction of the housing 30 and the mountain 51 and the valley 53, (53) may be formed so that its width gradually increases from the upper portion to the lower portion.

The elastic member (50) is formed such that the diameter of its cross section gradually increases from the top to the bottom.

The reason for implementing the bellows type in which the width and the diameter are gradually increased is that the time required for shutting off the air conditioner check valve 10 is shortened and the load can be increased easily and the noise due to the pressure difference applied to the valve hole 60 In order to prevent the occurrence.

The material of the elastic member 50 may include stainless steel, a shape memory alloy, a heat-resistant rubber, and the like. In an embodiment of the present invention, the elastic member 50 may be made of stainless steel.

The valve body 40 of the air conditioner check valve 10 according to the embodiment of the present invention can be supported by the stopper 70 formed on the flange 20 while being elastically supported by the elastic member 50 .

The stopper 70 is formed at the lower end of the flange 20 and functions to support the valve body 40 so as not to protrude outward when the valve body 40 is slid.

The flange 20 may be formed with a fitting groove 80 to be connected to the housing 30.

The fitting groove 80 is formed in a lower portion of the flange 20 and is formed in a bent shape and is connected to the upper end of the housing 30.

Hereinafter, the operation and operation of the air conditioner check valve according to the embodiment of the present invention will be described in detail.

The refrigerant discharged from the evaporator flows into the inside of the air conditioner check valve 10 through the flange 20 and the valve body 40 is opened by the pressure of the refrigerant The valve hole 60 is opened by lowering the force of the elastic member 50.

The refrigerant is discharged to the opened valve hole (60), and the discharged refrigerant moves to the suction chamber of the compressor.

After the valve hole 60 is opened and the refrigerant is discharged as described above, the valve body 40 is lifted again by the restoring force of the elastic member 50 to block the valve hole 60, And is supported by a stopper 70 formed at a lower portion of the flange 20.

The valve body 40 is formed in the shape of a circular plate and opens the valve hole 60 even when the valve body 40 is blocked. A pressure difference is also generated in the opened left and right valve holes 60.

The generated pressure difference acts not as the valve body 40 but as the elastic member 50 having the shape of the bellows, so that the vibration of the valve body 40 is minimized and the noise can be prevented.

Since the resilient member 50 has a bellows shape in which the diameter and the diameter of the resilient member 50 are gradually increased, the load is increased when the valve is closed, and the incomplete motion of the elastic member 50 can be prevented.

As described above, in the vehicle air conditioner check valve 10 according to the embodiment of the present invention, since the valve body 40 mounted inside is changed into the shape of a disc, even when the valve is shut off, the valve hole 60 It is possible to prevent the valve body 40 from shaking due to the pressure difference generated in the left and right valve holes 60 and thus the noise.

Further, by changing the structure of the elastic member 50, it is possible to easily increase the load when the valve is closed, to prevent the noise of the elastic member 50 due to the pressure difference applied to the valve hole 60, The manufacturing cost can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Of course.

10 ... Car air conditioner check valve 20 ... Flange
30 ... housing 40 ... valve body
50 ... elastic member 51 ... mountain
53 ... valley 60 ... valve hole
70 ... stopper 80 ... fitting groove

Claims

A housing mounted through a flange in a suction port of an air conditioner compressor and having at least one valve hole formed on an outer circumferential surface thereof;
A valve body slidably installed in the housing and selectively opening and closing the valve hole; And
A bellows which is mounted between the housing and the valve body and exerts an elastic force to the valve body and is continuously provided with mountains and valleys having a gradually increasing diameter in a longitudinal direction from an upper portion to a lower portion, And an elastic member,
Wherein the valve body opens the valve hole when the valve is closed.

The method according to claim 1,
Wherein the valve body is in the shape of a plate moving along the inner circumferential surface of the housing.

delete

The method according to claim 1,
Wherein the resilient member is formed such that its diameter gradually increases from the upper portion to the lower portion.

The method according to claim 1,
And a stopper for supporting the valve body is formed at a lower end of the flange.

The method according to claim 1,
Wherein the flange is formed with a fitting groove into which the upper end of the housing is fitted.