Exhaust structure for compressor, pump body structure with exhaust structure and compressor

Abstract

The utility model relates to an exhaust structure for a compressor, a pump body structure with the exhaust structure and the compressor. The exhaust structure for the compressor comprises a cover sealing piece, a silencing cover, a screw rod, a valve plate and a spring, the silencing cover is arranged on one end face of the cover sealing piece, the silencing cover and the cover sealing piece form a silencing cavity, the end face, connected with the silencing cover, of the cover sealing piece is sunken in the axial direction to form a valve seat groove, and the end, away from the silencing cover, of the valve seat groove penetrates through the cover sealing piece and is provided with an air inlet hole. The inner side wall of the valve seat groove obliquely and outwards penetrates through the covering and sealing piece to be provided with an exhaust channel communicating with the silencing cavity. The screw rod is in threaded connection to the silencing cover in the axial direction, and one end of the screw rod extends into the silencing cavity and is coaxial with the valve seat groove; the air inlet is covered with the valve plate, the screw is movably sleeved with the spring, one end of the spring abuts against the silencing cover, and the other end of the spring abuts against and is fixed to the valve plate. The problems that the valve plate is poor in sealing and prone to breakage can be solved, and the performance of the compressor is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field especially is related to a kind of exhaust structure for compressor and the pump body structure and compressor with it. BACKGROUND

[0002] The working principle of rotary compressor is to use piston to be sleeved on eccentrically designed crankshaft, piston and cylinder form a crescent-shaped variable-volume compression chamber, then use slider to isolate the compression chamber of cylinder into two independent spaces of suction and exhaust. High-temperature and high-pressure gas on exhaust side is communicated through the exhaust hole of cylinder and the exhaust hole of bearing to realize exhaust.

[0003] Among them, the exhaust hole of bearing needs to be opened and closed control. Common way is to open long strip valve seat groove on bearing, and open exhaust hole in valve seat groove, in this way, one end of long strip valve piece is riveted and fixed in valve seat groove, the other end of valve piece covers exhaust hole, and the limit plate is used to limit the pop-up end of valve piece. However, since valve piece adopts seesaw structure type, long-term use can easily cause valve piece to cause poor sealing problem to exhaust hole, affect the performance of compressor, and in the process of exhaust, valve piece is in the state of buckling, and the risk of fracture caused by metal fatigue is prone to occur. In addition, the difficulty of opening valve seat groove for long strip valve piece on bearing is also relatively large. SUMMARY

[0004] Therefore, the utility model discloses a kind of exhaust structure for compressor and the pump body structure and compressor with it, to overcome the deficiency of prior art, can improve the problem such as valve piece poor sealing, easy to break, effectively improve the performance of compressor.

[0005] To achieve the above object, the utility model embodiment provides a kind of exhaust structure for compressor, including cover seal, muffler cover, screw rod, valve piece, spring;The muffler cover is located in one of the end faces of the cover seal, and the muffler cover and the cover seal form a muffling cavity, the end face of the cover seal is connected with the muffling cavity is recessed along the axial direction and forms a valve seat groove, the end of the valve seat groove away from the muffling cavity is provided with an air inlet hole penetrating the cover seal, and the inner side wall of the valve seat groove is inclined outward and provided with an exhaust passage communicating with the muffling cavity by opening through the cover seal;The screw rod is threadedly connected on the muffling cover along the axial direction, and one end of the screw rod extends into the muffling cavity and is coaxially arranged with the valve seat groove;The valve piece is covered on the air inlet hole, the spring is movably sleeved on the screw rod, one end of the spring is abutted on the muffling cover, and the other end of the spring is abutted on the valve piece and is fixedly connected with the valve piece;

[0006] When the air inlet hole is impacted by high-pressure gas, the valve plate moves away from the air inlet hole and compresses the spring, so that the air inlet hole is communicated with the exhaust passage.

[0007] Therefore, according to the exhaust structure for the compressor, the valve seat groove is arranged on the cover sealing piece in the axial direction, and the screw rod is arranged on the sound attenuation cover, so that the spring can be sleeved on the screw rod. In this way, one end of the spring can abut against the inside of the sound attenuation cover, and the other end of the spring abuts against the valve plate, so that when the exhaust structure is not working, the valve plate can be sealed in the air inlet hole of the valve seat groove by the action force of the spring. The problem of poor sealing of the traditional valve plate can be improved. In addition, when the air inlet hole is impacted by high-pressure gas, the valve plate is opened and moves away from the air inlet hole, so that the exhaust passage on the inner side wall of the valve seat groove can be communicated with the air inlet hole. High-pressure gas can enter the sound attenuation cavity from the exhaust passage to achieve the exhaust effect. In this way, the valve plate moves up and down as a whole and does not deform, and the problem of easy deformation and fracture of the traditional valve plate can be improved, thereby effectively improving the service life and performance of the exhaust structure.

[0008] As an embodiment, the valve seat groove is a cylindrical groove structure, and the valve plate is a circular plate structure. Therefore, according to the exhaust structure for the compressor, the structure of the valve seat groove is designed as a cylindrical groove structure, which is conducive to reducing the processing difficulty of the valve seat groove.

[0009] As an embodiment, the axis of the air inlet hole overlaps with the axis of the valve seat groove, the diameter of the air inlet hole is smaller than the diameter of the valve plate, and the diameter of the valve plate is smaller than the inner diameter of the valve seat groove.

[0010] As an embodiment, a threaded hole is arranged on the sound attenuation cover, and the threaded hole is coaxially arranged with the valve seat groove. The screw rod includes a screw cap and a threaded segment coaxially arranged, the threaded segment is threadedly connected in the threaded hole, and the threaded segment extends into the sound attenuation cavity and is coaxially arranged with the valve seat groove.

[0011] As an embodiment, the screw cap abuts against the sound attenuation cover, and a gasket is arranged between the screw cap and the sound attenuation cover.

[0012] As an embodiment, at least a part of the end of the screw rod extending into the sound attenuation cavity extends into the valve seat groove.

[0013] As an embodiment, the sound attenuation cover is provided with an exhaust hole penetrating through the sound attenuation cover and communicating with the sound attenuation cavity.

[0014] As an implementation form, the exhaust passage is a diagonal passage structure, and a plurality of exhaust passages are arranged on the inner side wall of the valve seat groove in a spaced manner.

[0015] The utility model embodiment second aspect provides a pump body structure, it includes any one of above embodiment for compressor according to the pump body structure of utility model embodiment, can improve the problem such as valve piece bad sealing, easy to break, effectively improve the performance of compressor.

[0016] The utility model embodiment third aspect provides a compressor, it includes any one of above embodiment pump body structure. According to the compressor of utility model embodiment, can improve the problem such as valve piece bad sealing, easy to break, effectively improve the performance of compressor.

[0017] In order to better understand and implement, the utility model is explained in detail below in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is one of structure schematic view of the exhaust structure for compressor of utility model embodiment;

[0019] Figure 2 It is the structure schematic view of the exhaust structure for compressor of utility model embodiment No. 2;

[0020] Figure 3 It is the exploded schematic view of the exhaust structure for compressor of utility model embodiment;

[0021] Figure 4 It is the cross section schematic view of the exhaust structure for compressor of utility model embodiment;

[0022] Figure 5 It is the structure schematic view of cover seal piece of utility model embodiment;

[0023] Figure 6 It is the structure schematic view of pump body structure of utility model embodiment;

[0024] Figure 7 It is the cross section schematic view of pump body structure of utility model embodiment.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 10, cover seal piece;11, valve seat groove;12, inlet hole;13, exhaust passage;20, soundproof cover;21, soundproof cavity;22, screw hole;30, screw;31, nut;32, threaded section;40, valve piece;50, spring;60, cylinder;61, exhaust gap;70, lower bearing;80, crankshaft;100, exhaust structure;200, pump body structure. Detailed Implementation

[0027] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention.

[0028] In related technologies, the working principle of a rotary compressor is to utilize a piston mounted on an eccentrically designed crankshaft. The piston and cylinder form a crescent-shaped variable displacement compression chamber, and a slider is used to isolate the cylinder's compression chamber into two independent spaces: intake and exhaust. High-temperature, high-pressure gas on the exhaust side is exhausted by connecting the cylinder's exhaust port to the bearing's exhaust port. The bearing's exhaust port requires opening and closing control. A common method is to create a long, narrow valve seat groove on the bearing, with an exhaust port within this groove. One end of the long, narrow valve plate is then riveted and fixed in the valve seat groove, while the other end covers the exhaust port. A limiting plate restricts the valve plate's spring-loaded end. However, because the valve plate uses a seesaw structure, long-term use can easily lead to poor sealing of the exhaust port, affecting compressor performance. Furthermore, during exhaust, the valve plate is in a bent, tilted state, increasing the risk of metal fatigue and breakage. In addition, creating a valve seat groove on the bearing for the long, narrow valve plate is relatively difficult.

[0029] Therefore, this utility model provides an exhaust structure for a compressor, a pump body structure having the same, and a compressor. The exhaust structure for a compressor, the pump body structure having the same, and the compressor according to this utility model can improve problems such as poor valve sealing and easy breakage, effectively improving the performance of the compressor.

[0030] Please see Figures 1 to 5The utility model discloses a first aspect provides a kind of exhaust structure 100 for compressor, including cover seal piece 10, muffler cover 20, screw rod 30, valve piece 40, spring 50;The muffler cover 20 is located in one of the end surface of the cover seal piece 10, and the muffler cover 20 is formed with the cover seal piece 10 and forms sound attenuation cavity 21, the end surface of the cover seal piece 10 is connected with the muffler cover 20 recessed and is formed with valve seat groove 11 along axial direction, the one end of valve seat groove 11 away from the muffler cover 20 is equipped with air inlet hole 12, and the inside wall of valve seat groove 11 is inclined to the outside and is opened with the exhaust passage 13 of the communication sound attenuation cavity 21 in the cover seal piece 10;The screw rod 30 is connected in the muffler cover 20 along axial direction, and one end of the screw rod 30 is inserted into the sound attenuation cavity 21 and is coaxially arranged with the valve seat groove 11;The valve piece 40 is covered in the air inlet hole 12, the spring 50 is movably sleeved in the screw rod 30, one end of the spring 50 is abutted on the muffler cover 20, and the other end of the spring 50 is pressed on the valve piece 40 and is fixedly connected with the valve piece 40;When the air inlet hole 12 is impacted by high-pressure gas, the valve piece 40 moves away from the air inlet hole 12 and compresses the spring 50, so that the air inlet hole 12 is communicated with the exhaust passage 13.

[0031] Wherein, the utility model discloses valve seat groove 11 is the groove body structure of cylindrical shape, the valve piece 40 is circular piece structure. Thus, according to the utility model embodiment's exhaust structure 100 for compressor, by the structure design of valve seat groove 11 is the groove body structure of cylindrical shape, it is favorable to reduce the machining difficulty of valve seat groove 11.

[0032] Optionally, in some embodiments of the utility model, the axis of the air inlet hole 12 overlaps with the axis of the valve seat groove 11, the diameter of the air inlet hole 12 is smaller than the diameter of the valve piece 40, and the diameter of the valve piece 40 is smaller than the inner diameter of the valve seat groove 11. In addition, the muffler cover 20 is provided with an exhaust hole communicating with the sound attenuation cavity 21.

[0033] Optionally, in some embodiments of the utility model, the muffler cover 20 is provided with a threaded hole 22, and the threaded hole 22 is coaxially arranged with the valve seat groove 11. The screw rod 30 includes a screw cap 31 and a threaded segment 32 arranged coaxially, the threaded segment 32 is screwed into the threaded hole 22, and the threaded segment 32 is inserted into the sound attenuation cavity 21 and arranged coaxially with the valve seat groove 11. The screw cap 31 is abutted on the muffler cover 20, and a gasket is arranged between the screw cap 31 and the muffler cover 20. It can be understood that, in these embodiments, the projection of the threaded segment 32 of the screw rod 30 in the axial direction overlaps with the valve seat groove 11, so that the cooperation between the valve piece 40 and the spring 50 can open and close the air inlet hole 12.

[0034] Further, the end of the screw rod 30 extending into the muffling cavity 21 extends at least partially into the valve seat groove 11. It can be understood that the end face of the end of the screw rod 30 extending into the valve seat groove 11 serves as a structure abutting against the valve plate 40, and is conducive to the up-and-down movement of the valve plate 40 being always located in the valve seat groove 11. It can be understood that the end of the screw rod 30 extending into the valve seat groove 11 cannot exceed the opening of the exhaust passage 13 on the inner side wall of the valve seat groove 11, so as to avoid the valve plate 40 being unable to open the exhaust passage 13 and the air inlet hole 12 when the valve plate 40 moves in a direction away from the air inlet hole 12 and abuts against the end face of the screw rod 30, thereby affecting the exhaust function.

[0035] Optionally, in some embodiments of the utility model, the exhaust passage 13 is a diagonal passage structure, and a plurality of exhaust passages 13 are arranged on the inner side wall of the valve seat groove 11 at intervals. It can be understood that the number of the exhaust passages 13 of the utility model can be one or a plurality.

[0036] The utility model embodiment second aspect provides a kind of pump body structure 200, it includes the pump body structure 200 for compressor according to any one of the above embodiments of the utility model embodiment, can improve the problem such as valve plate 40 poor sealing, easy to break, effectively improve the performance of compressor.

[0037] As shown in Figure 6 And 7 The utility model embodiment pump body structure 200 is single cylinder structure, it further includes cylinder 60, lower bearing 70, crankshaft 80, the middle part of the cylinder 60 is perforated with compression cavity, the end of the cover sealing piece 10 away from the muffling cover 20 is located at the axial one end of the cylinder 60 to close the axial one end of the compression cavity of the cylinder 60, the cylinder 60 is opened with the exhaust gap 61 of the compression cavity and the air inlet hole 12;The lower bearing 70 is located at the axial other end of the cylinder 60 to cover the axial other end of the compression cavity;The crankshaft 80 is threaded in the muffling cover 20, cover sealing piece 10, cylinder 60, lower bearing 70.

[0038] So that it is understood that, in some embodiments of the utility model, pump body structure 200 can also be double cylinder structure, that is, the number of cylinder 60 is two, and is not limited to single cylinder structure of the above embodiment.

[0039] The utility model embodiment third aspect provides a kind of compressor, it includes the pump body structure 200 of any one of the above embodiments. According to the compressor of the utility model embodiment, it can improve the problem such as valve plate 40 poor sealing, easy to break, effectively improve the performance of compressor.

[0040] In the description of the utility model, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0041] The above-described embodiments only express several embodiments of the utility model, the description is more specific and detailed, but it cannot be understood as limiting the utility model for compressor exhaust structure, pump body structure and compressor range with it. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model.

Claims

1. An exhaust structure for a compressor, characterized in that, include: Includes sealing cap, silencer cover, screw, valve plate, and spring; The muffler cover is disposed on one end face of the cover seal, and the muffler cover and the cover seal form a muffler cavity. The end face of the cover seal connected to the muffler cover is recessed in the axial direction to form a valve seat groove. The end of the valve seat groove away from the muffler cover passes through the cover seal and has an air inlet hole. The inner sidewall of the valve seat groove is inclined outward and passes through the cover seal to form an exhaust channel communicating with the muffler cavity. The screw is threaded on the muffler cover in the axial direction, and one end of the screw extends into the muffler cavity and is coaxially arranged with the valve seat groove. The valve plate is disposed on the air inlet hole. The spring is movably sleeved on the screw. One end of the spring abuts against the muffler cover, and the other end of the spring abuts against the valve plate and is fixedly connected to the valve plate. When the air inlet is impacted by high-pressure gas, the valve plate moves away from the air inlet and compresses the spring, so that the air inlet is connected to the exhaust passage.

2. The exhaust structure for a compressor according to claim 1, characterized in that: The valve seat groove is a cylindrical groove structure, and the valve plate is a circular plate structure.

3. The exhaust structure for a compressor according to claim 2, characterized in that: The axis of the air inlet overlaps with the axis of the valve seat groove. The diameter of the air inlet is smaller than the diameter of the valve plate, and the diameter of the valve plate is smaller than the inner diameter of the valve seat groove.

4. The exhaust structure for a compressor according to claim 1, characterized in that: The silencer cover is provided with a threaded hole, which is coaxially arranged with the valve seat groove; the screw includes a nut and a threaded section arranged coaxially, the threaded section is threadedly connected to the threaded hole, and the threaded section extends into the silencer cavity and is coaxially arranged with the valve seat groove.

5. The exhaust structure for a compressor according to claim 4, characterized in that: The nut abuts against the muffler cover, and a gasket is provided between the nut and the muffler cover.

6. The exhaust structure for a compressor according to claim 1, characterized in that: At least a portion of the end of the screw that extends into the silencing cavity extends into the valve seat groove.

7. The exhaust structure for a compressor according to claim 1, characterized in that: The muffler cover has an exhaust port that connects to the muffler cavity.

8. The exhaust structure for a compressor according to claim 1, characterized in that: The exhaust channel has an oblique channel structure, and several exhaust channels are spaced apart on the inner sidewall of the valve seat groove.

9. A pump body structure, characterized in that: Includes the exhaust structure for the compressor as described in any one of claims 1 to 8.

10. A compressor, characterized in that: Includes the pump body structure as described in claim 9.

Images