Front-row rotary vane type automobile air conditioner compressor

Abstract

The utility model discloses a front-row cyclone rotary vane type automobile air conditioner compressor which comprises a front cover, an exhaust hole is formed in the front cover, a one-way valve is arranged in the exhaust hole, one end of the exhaust hole is a square hole, the other end of the exhaust hole is a round hole, a mounting groove is formed in the connecting position of the square hole and the round hole, and the one-way valve comprises a supporting frame, a connecting shaft and a round valve plate. A through hole corresponding to the valve plate is formed in the supporting frame, a valve seat is arranged at one end of the through hole, the one-way valve is inserted into the installation groove, a sealing piece and a sealing plate which are used for sealing the connection position of the one-way valve and the installation groove are further arranged on the concave ring, and the valve plate abuts against the valve seat under the action of self weight. And the structure of the front cover is not influenced, so that the front cover can be kept in a relatively regular shape, and the processing of the front cover is facilitated.

Description

Technical Field

[0001] This utility model relates to a front-exhaust rotary vane type automotive air conditioning compressor. Background Technology

[0002] Patent CN205349739U discloses a front cover structure for an automotive rotary vane air conditioning compressor. The structure includes a disc-shaped front cover with a recessed rear surface forming the front wall of the compressor cavity. A forward-protruding rotating shaft mounting platform is located in the center of the front side of the front cover. A rotating shaft mounting cavity, coaxially connected to the front wall of the compressor cavity, is located within the rotating shaft mounting platform. An air intake hole, perpendicular to the rotating shaft mounting cavity, is located on one circumferential side of the front cover, connecting the outer circumferential surface of the front cover and the front wall of the compressor cavity. A check valve structure is installed within the air intake hole to control unidirectional airflow from the outside to the inside. This invention offers advantages such as simple structure, easy installation, reduced vehicle noise, and improved vehicle passenger comfort.

[0003] The front cover of this structure can also be used as a front cover for a front exhaust rotary vane automotive air conditioning compressor by changing the direction of the one-way valve instead of the intake port. However, the one-way valve structure of the front cover in the above structure is relatively bulky, which will lead to the irregularity of the overall structure of the front cover and increase the difficulty of processing the front cover. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a front exhaust rotary vane automotive air conditioning compressor with a simple one-way valve structure that is easy to process.

[0005] The technical solution of this utility model is: a front exhaust rotary vane type automotive air conditioning compressor, including a front cover, an exhaust hole provided on the front cover, a one-way valve provided in the exhaust hole, a square hole at one end of the exhaust hole connected to the outside of the front cover, a round hole at one end of the exhaust hole connected to the inside of the front cover, a mounting groove provided at the connection between the square hole and the round hole, and the bottom of the mounting groove penetrating the concave ring inside the front cover.

[0006] The one-way valve includes a support frame, a connecting shaft rotatably connected to the upper end of one side of the support frame, and a circular valve plate disposed below the connecting shaft and fixed to the connecting shaft. The valve plate has a frustum-shaped cross section. The support frame is provided with a through hole corresponding to the valve plate. A concave, bowl-shaped valve seat corresponding to the valve plate is also provided on the side of the through hole facing the valve plate.

[0007] The one-way valve is inserted into the mounting groove. The concave ring is also provided with a sealing element and a sealing plate to seal the connection between the one-way valve and the mounting groove. The valve plate abuts against the valve seat under its own weight.

[0008] Furthermore, a first sealing ring is provided on the outer periphery of the valve plate.

[0009] Furthermore, the valve seat is provided with a second sealing ring and a third sealing ring.

[0010] Furthermore, the support frame is an annular support frame, and a fourth sealing ring is provided on each side of the support frame.

[0011] Furthermore, the height and width of the square hole are both greater than the inner diameter of the round hole and the outer diameter of the valve plate.

[0012] Furthermore, a filter screen is fixed to the outer end of the square hole.

[0013] Furthermore, the bottom surface of the sealing plate is flush with the bottom surface of the concave ring.

[0014] The beneficial effects of this utility model are as follows: the exhaust port in this utility model is a small hole, which will not affect the structure of the front cover, allowing the front cover to maintain a relatively regular shape and facilitating its processing; the exhaust port is designed with a square hole with a thicker outer end and a round hole with a thinner inner end, which facilitates the opening and closing of the valve plate, and the inner end of the support frame is reliably supported, preventing the support frame from deforming under negative pressure inside the compressor; the one-way valve can effectively prevent air from entering through the exhaust port under negative pressure inside the compressor, and the one-way valve has a flat valve body, which will not occupy too much installation space, and its structure is simple and not prone to failure; the one-way valve installation method of being inserted and fixed inside the front cover can also prevent the one-way valve from falling off due to accidental collision. Attached Figure Description

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

[0016] Figure 2 yes Figure 1 Enlarged view of section A in the middle;

[0017] Figure 3 This is a schematic diagram of the bottom structure of this utility model.

[0018] In the diagram: 1. Front cover; 2. One-way valve; 3. Square hole; 4. Round hole; 5. Mounting groove; 6. Concave ring; 7. Support frame; 8. Connecting shaft; 9. Valve plate; 10. Valve seat; 11. Seal; 12. Sealing plate; 13. First sealing ring; 14. Second sealing ring; 15. Third sealing ring; 16. Fourth sealing ring; 17. Filter screen. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0020] Combination Figure 1-3 As shown, a front-exhaust rotary vane automotive air conditioning compressor includes a front cover 1, on which an exhaust port is provided, and a one-way valve 2 is provided inside the exhaust port;

[0021] The exhaust hole is connected to the outer side of the front cover 1 by a square hole 3, and the exhaust hole is connected to the inner side of the front cover 1 by a round hole 4. A mounting groove 5 is provided at the connection between the square hole 3 and the round hole 4. The bottom of the mounting groove 5 passes through the concave ring 6 inside the front cover 1.

[0022] The one-way valve 2 includes a support frame 7, a connecting shaft 8 rotatably connected to the upper end of one side of the support frame 7, and a circular valve plate 9 disposed below the connecting shaft 8 and fixed to the connecting shaft 8. The valve plate 9 has a frustum-shaped cross section. The support frame 7 is provided with a through hole corresponding to the valve plate 9. A concave, bowl-shaped valve seat 10 corresponding to the valve plate 9 is also provided on the side of the through hole facing the valve plate 9.

[0023] The one-way valve 2 is inserted into the mounting groove 5. The concave ring 6 is also provided with a sealing element 11 and a sealing plate 12 to seal the connection between the one-way valve 2 and the mounting groove 5. The valve plate 9 is set to abut against the valve seat 10 under its own weight.

[0024] Compared to existing technologies, the exhaust port of the above structure is a small hole, which will not affect the structure of the front cover 1, allowing the front cover 1 to maintain a relatively regular shape and facilitating its processing. The exhaust port is designed with a square hole 3 with a thicker outer end and a round hole 4 with a thinner inner end to facilitate the opening and closing of the valve plate 9, and the inner end of the support frame 7 is reliably supported, preventing deformation of the support frame 7 under negative pressure inside the compressor. The one-way valve 2 can effectively prevent air from entering through the exhaust port under negative pressure inside the compressor, and the one-way valve 2 has a flat valve body, which will not occupy too much installation space. Its structure is simple and not prone to failure. The installation method of the one-way valve 2 being inserted and fixed inside the front cover 1 can also prevent the one-way valve 2 from falling off due to accidental collision.

[0025] In another embodiment, such as Figure 2 As shown, the valve plate 9 is provided with a first sealing ring 13 on its outer periphery.

[0026] In another embodiment, such as Figure 2 As shown, the valve seat 10 is provided with a second sealing ring 14 and a third sealing ring 15.

[0027] In the above structure, the three sealing rings are used to ensure the sealing of the connection between the valve plate 9 and the valve seat 10 when the one-way valve 2 is closed. On the other hand, the elastic sealing rings ensure that the valve plate 9 can be reliably inserted into the valve seat 10, avoiding any gap between the valve plate 9 and the valve seat 10 when the valve is closed.

[0028] In another embodiment, such as Figure 2 As shown, the support frame 7 is an annular support frame 7, and a fourth sealing ring 16 is provided on both sides of the support frame 7 to ensure the sealing of the connection between the support frame 7 and the mounting groove 5.

[0029] In another embodiment, combined Figure 1and Figure 2 As shown, the height and width of the square hole 3 are both greater than the inner diameter of the round hole 4 and the outer diameter of the valve plate 9, so as to facilitate the opening and closing of the valve plate 9.

[0030] In another embodiment, such as Figure 1 As shown, a filter screen 17 is also fixed to the outer end of the square hole 3 to prevent foreign objects from entering the interior of the square hole 3.

[0031] In another embodiment, combined Figure 1-3 As shown, the bottom surface of the sealing plate 12 is flush with the bottom surface of the concave ring 6 to avoid affecting the installation of internal components of the compressor.

Claims

1. A front exhaust spiral vane type automobile air conditioning compressor comprising a front cover (1), characterized in that, The front cover (1) is provided with an exhaust hole, the exhaust hole is provided with a one-way valve (2), one end of the exhaust hole communicating with the outside of the front cover (1) is a square hole (3), the other end of the exhaust hole communicating with the inside of the front cover (1) is a round hole (4), the connecting part of the square hole (3) and the round hole (4) is provided with a mounting groove (5), the bottom of the mounting groove (5) penetrates the concave ring (6) in the inside of the front cover (1); The one-way valve (2) comprises a support frame (7), a connecting shaft (8) rotatably connected to the upper end of one side of the support frame (7), and a circular valve plate (9) arranged below the connecting shaft (8) and fixed with the connecting shaft (8), the cross section of the valve plate (9) is in the shape of a truncated cone, the support frame (7) is provided with a through hole corresponding to the valve plate (9), and the side of the through hole facing the valve plate (9) is further provided with a valve seat (10) corresponding to the valve plate (9) and concave in the shape of a bowl; The one-way valve (2) is inserted into the mounting groove (5), the concave ring (6) is further provided with a sealing element (11) and a closing plate (12) closing the connecting part of the one-way valve (2) and the mounting groove (5), and the valve plate (9) abuts against the valve seat (10) under the action of gravity.

2. A front-bleed-lobe automotive air-conditioning compressor as set forth in claim 1, characterized in that, The outer periphery of the valve plate (9) is provided with a first sealing ring (13).

3. A front-vented automobile air conditioner compressor of the scroll type as set forth in claim 2, characterized in that, The valve seat (10) is provided with a second sealing ring (14) and a third sealing ring (15).

4. A front-vented automobile air conditioner compressor of the scroll type as set forth in claim 3, characterized in that, The support frame (7) is an annular support frame (7), and the support frame (7) is further provided with a fourth sealing ring (16) on each side.

5. A front-vented automobile air conditioner compressor of the scroll type as set forth in claim 4, characterized in that, The height and width of the square hole (3) are greater than the inner diameter of the round hole (4) and the outer diameter of the valve plate (9).

6. A front-vented lobed bladed automobile air conditioner compressor as set forth in claim 5 wherein, The outer end of the square hole (3) is further fixed with a filter screen (17).

7. A front-vented lobed bladed automobile air conditioner compressor as set forth in claim 6 wherein, The bottom surface of the closing plate (12) is flush with the bottom surface of the concave ring (6).

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