Air suction on-off valve and swash plate type variable displacement compressor

Abstract

The utility model discloses an air suction on-off valve and a swash plate type variable displacement compressor, which comprise a valve body, an air suction valve, an air suction valve and an air suction valve, the valve plate is arranged in the opening and closing cavity through a rotating shaft, the valve plate divides the interior of the opening and closing cavity into an upper cavity and a lower cavity, and a pressure regulating hole communicating the upper cavity with the lower cavity is further formed in the valve plate; the limiting table is arranged in the upper cavity and keeps making contact with the valve block, and the limiting table and the valve block are arranged in parallel. The air suction opening and closing valve is simple in structure, opening and closing of the air suction opening and closing valve are more flexible through the opening and closing structure that the rotating shaft is linked with the valve plate, noise generated under the high-frequency opening and closing condition is effectively avoided, meanwhile, the design is matched with the limiting table to form a backflow blocking mechanism, the risk of refrigerant leakage is remarkably reduced, and the service life of the air suction opening and closing valve is prolonged. Therefore, the service life of the compressor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of suction opening and closing valve and rotary swash plate type variable displacement compressor in the technical field of automobile air conditioner refrigeration compressor. BACKGROUND

[0002] In recent years, with the rapid development of automobile industry, as the core component of improving driving comfort, the performance of its refrigeration compressor directly affects the vehicle energy efficiency, NVH (noise, vibration, sound roughness) control and reliability. However, driven by the tightening global energy efficiency regulations and the trend of lightweight and intelligentization of automobiles, automobile air conditioner compressor manufacturers are facing multiple challenges of cost reduction, energy efficiency improvement, vibration and noise reduction. In the design of traditional automobile air conditioner compressor, built-in spring structure is generally used to control the opening and closing of valve body and vibration buffering. However, when the automobile air conditioner is running, the compressor needs to adapt to frequent variable working conditions (such as low-speed idle, high-speed cruising, etc.). Under the condition of small flow at the suction side, the traditional built-in spring structure needs to rely on high pressure to open the valve port, which causes the valve body to open and close frequently. This intermittent airflow not only aggravates the wear of the valve plate, but also causes airflow pulsation, which reduces the stability of the system. Especially in the compact design of automobile air conditioner, pulsation is easy to resonate with pipeline and shell, amplifying low-frequency vibration, which directly affects the comfort and NVH performance in the car. Therefore, a kind of suction opening and closing valve and rotary swash plate type variable displacement compressor is proposed. SUMMARY

[0003] The purpose of the utility model is to provide a kind of suction opening and closing valve and rotary swash plate type variable displacement compressor to solve the problems raised in the above background.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: a kind of suction opening and closing valve, comprising:

[0005] valve body, the valve body has vertical through opening and closing cavity;

[0006] valve plate, which is provided in the opening and closing cavity by a rotating shaft, the valve plate separates the opening and closing cavity into upper chamber and lower chamber, and a pressure regulating hole is formed in the valve plate to communicate the upper and lower chambers;And

[0007] limiting table, the limiting table is provided in the upper chamber and in contact with the valve plate, and the limiting table and the valve plate are arranged in parallel.

[0008] As a further scheme of the utility model: the valve body also has a limiting sliding groove vertically symmetrically distributed in the opening and closing cavity.

[0009] As a further scheme of the utility model: the outer circumferential side of the limiting table has a limiting part extending outward, the number of the limiting part is two, and the two limiting parts are symmetrically arranged.

[0010] As a further scheme of the utility model: the outer circumferential surface of the limiting table is provided with two clamping grooves, and the positions of the two clamping grooves are respectively below the two limiting parts.

[0011] As a further scheme of the utility model: the number of the rotating shafts is two, the two rotating shafts are arranged side by side, and the two rotating shafts are both provided with valve pieces.

[0012] As a further scheme of the utility model: the rotating shaft is arranged in the clamping groove, and the two ends of the rotating shaft are respectively extended into the two limiting sliding grooves, and the limiting parts of the limiting table are respectively arranged in the two limiting sliding grooves.

[0013] As a further scheme of the utility model: the two valve pieces are both semicircular, and the two semicircular valve pieces are oppositely arranged, and when the two valve pieces are combined, the diameter of the outer circle is greater than the inner diameter of the limiting table.

[0014] As a further scheme of the utility model: the valve piece is made of spring steel.

[0015] A rotary swash plate type variable displacement compressor, comprising a suction opening and closing valve.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] The application realizes the opening and closing of the suction opening and closing valve through the linkage of the rotating shaft and the valve piece, so that the opening and closing of the suction opening and closing valve is more flexible, and the noise problem generated under high-frequency opening and closing is effectively avoided. At the same time, the design cooperates with the limiting table to form a barrier backflow mechanism, significantly reduces the risk of refrigerant leakage, and prolongs the service life of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the suction opening and closing valve of the utility model;

[0019] Figure 2 It is a top view schematic view of the suction opening and closing valve of the utility model;

[0020] Figure 3 It is a closed schematic view of the suction opening and closing valve of the utility model;

[0021] Figure 4 It is an open schematic view of the suction opening and closing valve of the utility model;

[0022] Figure 5 It is a sectional view schematic view of the suction opening and closing valve of the utility model;

[0023] Figure 6 It is a schematic view of the limiting table of the utility model;

[0024] Figure 7 It is a schematic view of the compressor of the utility model;

[0025] In the figure: 1, valve body; 2, opening and closing cavity; 3, limiting sliding groove; 4, rotating shaft; 5, valve piece; 6, pressure regulating hole; 7, limiting table. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-7 In the embodiments of the present application, an air suction opening and closing valve comprises:

[0028] The valve body 1 has a vertically penetrating opening and closing cavity 2;

[0029] The valve piece 5 is arranged in the opening and closing cavity 2 through the rotating shaft 4, the valve piece 5 divides the opening and closing cavity 2 into an upper chamber and a lower chamber, and the valve piece 5 is further provided with a pressure regulating hole 6 for communicating the upper and lower chambers; and

[0030] The limiting table 7 is arranged in the upper chamber and in contact with the valve piece 5, and the limiting table 7 and the valve piece 5 are arranged in parallel.

[0031] Specifically, the opening and closing cavity 2 penetrates the entire valve body 1, facilitating the external airflow to enter the interior of the compressor through the opening and closing cavity 2. The opening and closing cavity 2 has an air inlet and an air outlet. The valve piece 5 divides the opening and closing cavity 2 into an upper chamber and a lower chamber. The chamber adjacent to the air inlet is the upper chamber, and the chamber adjacent to the air outlet is the lower chamber. The valve piece 5 fixed in the opening and closing cavity 2 through the rotating shaft 4 can close the opening and closing cavity 2. The outer diameter of the limiting table 7 is matched with the inner diameter of the opening and closing cavity 2, so that the limiting table 7 can be well fixed in the interior of the opening and closing cavity 2 and limit the movement direction of the valve piece 5. The limiting table 7 is located at the position of the valve piece 5 close to the air inlet of the opening and closing cavity 2.

[0032] Through the technical scheme, when the external airflow enters the inside of the opening and closing cavity 2 through the air inlet of the opening and closing cavity 2, the airflow first contacts the valve piece 5, the airflow exerts pressure on the valve piece 5 to make the valve piece 5 deform, at this time, the valve piece 5 deforms in a direction away from the air inlet, thus a gap is formed between the valve piece 5 and the limiting table 7, the airflow passes through the gap and then enters the inside of the compressor through the air outlet, and then the limiting table 7 limits the valve piece 5 to tilt in a direction towards the air inlet after resetting, which can block the airflow backflow, reduce the refrigerant leakage and increase the service life of the compressor, and meanwhile, when the suction opening and closing valve works, the upper cavity chamber has a pressure greater than the lower cavity chamber, at this time, in order to ensure the smooth airflow, a pressure regulating hole 6 is formed in the valve piece 5, the pressure regulating hole 6 is a through hole with a diameter of 0.3-0.4 mm, which can eliminate the instantaneous pressure of the upper cavity chamber, and when the work is completed, the valve piece 5 resets due to the pressure, but at this time, the lower cavity chamber has a pressure greater than the upper cavity chamber, and the through hole can be used to eliminate the instantaneous pressure of the lower cavity chamber.

[0033] Please refer to Figure 3 In an embodiment, preferably, the valve body 1 further has a limiting sliding groove 3 vertically and symmetrically arranged in the opening and closing cavity 2, the limiting sliding groove 3 provides mounting positions for the rotating shaft 4 and the limiting table 7, and prevents the rotating shaft 4 and the limiting table 7 from rotating.

[0034] Please refer to Figure 6 In an embodiment, preferably, the limiting table 7 has two limiting portions extending outward on the outer circumferential side, the two limiting portions are symmetrically designed and respectively arranged in the two limiting sliding grooves 3, the limiting table 7 is fixed, the outer circumferential surface of the limiting table 7 is provided with two clamping grooves, the two clamping grooves are respectively arranged below the two limiting portions, the rotating shaft 4 has two rotating shafts 4, the two rotating shafts 4 are arranged side by side and fixedly connected, the rotating shaft 4 arranged side by side is arranged in the clamping groove and has two ends arranged in the two limiting sliding grooves 3, the valve piece 5 is arranged on the two rotating shafts 4, the valve piece 5 and the rotating shaft 4 are fixedly connected, the valve piece 5 is provided with an initial fixed position, the position does not change no matter how the valve piece 5 deforms, the rotating shaft 4 and the valve piece 5 are combined, the opening and closing is flexible, and the noise problem generated in the high-frequency opening and closing is avoided.

[0035] Please refer to Figure 2 In an embodiment, preferably, the two valve pieces 5 are semicircular and arranged oppositely, the diameter of the outer circle of the two valve pieces 5 combined is greater than the inner diameter of the limiting table 7, when the two valve pieces 5 are in the initial state and are not subjected to pressure, the outer circular edge of the valve piece 5 contacts the limiting table 7 to seal and block the airflow backflow.

[0036] Please refer to Figure 1 In one embodiment, the valve plate 5 is preferably made of spring steel, which has elasticity, and can be reset to achieve the effect of closing when no pressure is applied to the valve plate 5.

[0037] Please refer to Figure 7 In one embodiment, the valve plate 5 is preferably made of spring steel, which has elasticity, and can be reset to achieve the effect of closing when no pressure is applied to the valve plate 5.

[0038] Although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0039] Therefore, the above description is only the preferred embodiment of the present application, and is not intended to limit the scope of the present application; that is, any equivalent transformation made within the scope of the claims of the present application is within the protection scope of the claims of the present application.

Claims

1. An aspirating on-off valve characterized by, The application relates to an air suction opening and closing valve. The valve body has a vertical through opening and closing cavity; The valve piece is arranged in the opening and closing cavity through a rotating shaft, the valve piece divides the opening and closing cavity into an upper cavity and a lower cavity, and a pressure regulating hole for connecting the upper cavity and the lower cavity is arranged on the valve piece; and The limiting table is arranged in the upper cavity and is in contact with the valve piece, and the limiting table and the valve piece are arranged in parallel.

2. The aspirating on-off valve according to claim 1, characterized in that The valve body also has limiting sliding grooves vertically and symmetrically arranged in the opening and closing cavity.

3. The aspirating on-off valve according to claim 2, characterized in that The outer circumferential side of the limiting table has two outwardly extending limiting parts, and the two limiting parts are symmetrically arranged.

4. The aspirating on-off valve according to claim 3, characterized in that Two clamping grooves are arranged on the outer circumferential surface of the limiting table, and the positions of the two clamping grooves are respectively below the two limiting parts.

5. The aspirating on-off valve according to claim 4, characterized in that The number of the rotating shafts is two, the two rotating shafts are arranged side by side, and the two rotating shafts are respectively provided with valve pieces.

6. The aspirating on-off valve according to claim 5, characterized in that The rotating shafts are arranged in the clamping grooves, and the two ends of the rotating shafts respectively extend into the two limiting sliding grooves, and the limiting parts of the limiting table are respectively arranged in the two limiting sliding grooves.

7. The aspirating on-off valve according to claim 5, wherein The two valve pieces are semicircular, and the two semicircular valve pieces are oppositely arranged, and when the two valve pieces are combined, the diameter of the outer circle is greater than the inner diameter of the limiting table.

8. The aspirating on-off valve according to claim 1, wherein The valve piece is made of spring steel.

9. A rotary swash plate variable displacement compressor characterized by, The application also relates to an air suction opening and closing valve.

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