Valve plate assembly, pump body assembly and compressor

Abstract

The application provides a valve plate assembly, a pump body assembly and a compressor. The valve plate assembly comprises a valve plate, a first side and a second side oppositely arranged, and an exhaust hole and an air suction hole penetrating through the first side and the second side; the air flow direction in the exhaust hole is from the first side to the second side, and the air flow direction in the air suction hole is from the second side to the first side; a groove is arranged on the first side; the exhaust hole and the air suction hole are arranged on the groove bottom. The first side of the valve plate is provided with a groove, and the second side is not provided with a groove, the concave structure of the exhaust valve port in the traditional valve plate is cancelled, and the problems of difficult polishing and high cost in the manufacturing process do not exist on the exhaust side. The first side is provided with a large-area groove, the clearance volume in the exhaust process is not affected, the difficulty of polishing the valve port is reduced, the qualified rate of the part is improved, and the machining quality of the part is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of compressors, and particularly relates to a valve plate assembly, a pump body assembly and a compressor. BACKGROUND

[0002] A valve group is a basic component for a compressor to realize its compression function, and the performance of the valve group directly affects the performance, noise and vibration of the compressor. A valve plate is an important component of the valve group, and controls the suction and outflow of refrigerant together with a suction valve plate and a discharge valve plate during the operation of the compressor.

[0003] At present, a commonly used valve plate of a compressor is a concave valve plate. The concave valve plate is concave at a discharge valve port to install a discharge valve plate and a lift limiter while ensuring its own strength, and can reduce the residual volume during the discharge process. In the processing of the concave valve plate, an additional process of grinding the discharge valve port is needed. Since the space is small and the processing precision is extremely high, the processing of the part is difficult, the qualified rate is low, and the cost is high. Moreover, the suction valve plate used in combination with the concave valve plate consumes more materials than the discharge valve plate. Since the commonly used material of the valve plate is very expensive, the use of the concave valve plate increases the cost of the compressor to some extent. SUMMARY

[0004] Therefore, the application provides a valve plate assembly, a pump body assembly and a compressor, which can solve the problem of high manufacturing cost of the valve plate due to the concave structure on the discharge side in the prior art.

[0005] In order to solve the above problems, the application provides a valve plate assembly, which comprises:

[0006] a valve plate comprising a first side and a second side arranged oppositely, and a discharge hole and a suction hole penetrating through the first side and the second side; the flow direction of the gas flow in the discharge hole is from the first side to the second side, and the flow direction of the gas flow in the suction hole is from the second side to the first side;

[0007] a groove is arranged on the first side; the discharge hole and the suction hole are arranged on the groove bottom position.

[0008] Optionally, the valve plate assembly further comprises a suction valve plate, the suction valve plate is arranged in the groove and covers the suction hole.

[0009] Optionally, the groove bottom surface comprises a limiting groove, and the suction valve plate is arranged in the limiting groove in a matched manner.

[0010] Optionally, the discharge hole is arranged on the limiting groove position, and a through hole corresponding to the position of the discharge hole is arranged on the suction valve plate.

[0011] Optionally, the air suction valve plate is provided with a gap with the inner circumferential wall of the limiting groove, and the gap is 0.01-1.0 mm.

[0012] Optionally, the valve plate assembly further comprises an air exhaust valve plate, which is arranged on the side of the second side and covers the air exhaust hole.

[0013] According to another aspect of the present application, a pump body assembly is provided, comprising the valve plate assembly as described above.

[0014] Optionally, the pump body assembly further comprises a piston cylinder, and the cylinder top of the piston cylinder is provided with an opening; the first side of the valve plate covers and seals the opening of the cylinder top, and the groove is matched with the chamber of the piston cylinder.

[0015] Optionally, the pump body assembly further comprises a piston which is slidingly matched in the piston cylinder, and when the piston runs to the outer dead point, the top part of the piston extends into the groove.

[0016] According to another aspect of the present application, a compressor is provided, comprising the valve plate assembly as described above or the pump body assembly as described above.

[0017] The valve plate assembly provided by the present application comprises: a valve plate comprising a first side and a second side arranged oppositely, and an air exhaust hole and an air suction hole penetrating through the first side and the second side; the air flow direction in the air exhaust hole is from the first side to the second side, and the air flow direction in the air suction hole is from the second side to the first side; the first side is provided with a groove; the air exhaust hole and the air suction hole are arranged at the groove bottom of the groove.

[0018] In the present application, the groove is arranged on the first side of the valve plate, and no groove is arranged on the second side, the lower concave structure of the air exhaust valve port in the traditional valve plate is cancelled, and there is no problem of difficult polishing and high cost in the manufacturing process on the air exhaust side. The large-area groove arranged on the first side does not affect the clearance volume in the air exhaust process, and can also reduce the difficulty of polishing the valve port, improve the qualified rate of parts, and improve the processing quality of parts. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is an exploded structural view of the valve plate assembly of the embodiment of the present application;

[0020] Fig. 2 It is a structural schematic view of the compressor of the embodiment of the present application;

[0021] Fig. 3 It is a local internal schematic view of the compressor of the embodiment of the present application;

[0022] Fig. 4 It is a state view of the valve plate assembly and the piston operation matching of the embodiment of the present application.

[0023] Reference signs are indicated as:

[0024] 1, valve plate; 11, first side; 12, groove; 13, limiting groove; 14, exhaust hole; 15, suction hole; 16, second side; 2, cylinder head; 3, piston cylinder; 4, piston; 5, exhaust valve plate; 6, suction valve plate; 61, through hole. DETAILED DESCRIPTION

[0025] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions will be clearly and completely described below with reference to the specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0026] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in other than the order illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0027] Reference should be made to Figs. 1 to 4 As shown, according to the embodiments of the present application, a valve plate assembly comprises:

[0028] The valve plate 1 comprises a first side 11 and a second side 16 arranged oppositely, and an exhaust hole 14 and a suction hole 15 penetrating through the first side 11 and the second side 16; the flow direction of the gas flow in the exhaust hole 14 is from the first side 11 to the second side 16, and the flow direction of the gas flow in the suction hole 15 is from the second side 16 to the first side 11.

[0029] The first side 11 is provided with a groove 12; the exhaust hole 14 and the suction hole 15 are both arranged at the groove bottom position of the groove 12.

[0030] The application sets the groove 12 on the first side 11 of the valve plate 1, and does not set the groove 12 on the second side 16, cancels the concave structure of the exhaust valve port in the traditional valve plate 1, and the second side 16 where the exhaust valve piece 5 is located does not have the problem of difficult polishing and high cost in the manufacturing process. The first side 11 is provided with a large-area groove 12, which does not affect the residual volume in the exhaust process, and can also reduce the difficulty of polishing the valve port, improve the qualified rate of parts, and improve the processing quality of parts.

[0031] The application utilizes the area of the air inlet hole 15 being larger than the area of the exhaust hole 14, sets a larger-area groove 12 on the first side 11 where the exhaust valve piece 5 is located, facilitates machining and polishing, and also facilitates setting the air inlet valve piece 6 with a more appropriate size, reduces the loss of valve piece material, and reduces the cost.

[0032] In some embodiments, the valve plate assembly further comprises an air inlet valve piece 6, which is arranged in the groove 12 and covers the air inlet hole 15.

[0033] When the valve plate assembly comprises the air inlet valve piece 6, the air inlet valve piece 6 is arranged in the groove 12 and covers the air inlet hole 15, opens the air inlet hole 15 in the air intake process of the compressor, and is in a closed state otherwise; preferably, a limiting groove 13 is arranged on the groove bottom surface of the groove 12, and the air inlet valve piece 6 is matchedly arranged in the limiting groove 13.

[0034] Here, matching means that the shape of the air inlet valve piece 6 is the same as that of the limiting groove 13, and the thickness is also the same, that is, the air inlet valve piece 6 is just assembled in the limiting groove 13, so that the entire groove bottom surface of the groove 12 is relatively flat; the matched arrangement of the air inlet valve piece 6 and the limiting groove 13 can facilitate the installation of the air inlet valve piece 6 and does not affect the residual volume when the compressor piston 4 operates.

[0035] In some embodiments, the exhaust hole 14 is arranged at the position of the limiting groove 13, and the air inlet valve piece 6 is provided with a through hole 61 corresponding to the position of the exhaust hole 14.

[0036] The exhaust hole 14 is also arranged at the position of the limiting groove 13, which further reduces the axial thickness of the exhaust hole 14 and the residual volume of the exhaust; based on the matching of the air inlet valve piece 6 and the limiting groove 13, the through hole 61 is arranged on the air inlet valve piece 6 to facilitate the exhaust.

[0037] In some embodiments, the air inlet valve piece 6 and the inner circumferential wall of the limiting groove 13 are provided with a gap, and the size of the gap is 0.01-1.0 mm.

[0038] The air inlet valve piece 6 and the inner circumferential wall of the limiting groove 13 have a gap, which facilitates the installation of the air inlet valve piece 6, but in order to reduce the residual volume, the above-mentioned appropriate gap range is set.

[0039] In some embodiments, the valve plate assembly further comprises an exhaust valve flap 5 arranged on the side of the second side 16 and covering the exhaust hole 14.

[0040] The second side 16 of the valve plate 1, i.e. the installation side of the exhaust valve flap 5, does not need to be concave on the side, so there is no process of grinding the exhaust valve port and the operation difficulty problem of arranging the exhaust valve flap 5 in the traditional concave exhaust valve port; the application directly assembles the exhaust valve flap 5 and the corresponding lift limiter and the like on the side of the second side 16 of the valve plate 1, which is convenient and easy to operate, reduces the difficulty of part assembly, improves the quality of part processing, and improves the performance of the valve group and the compressor and reduces the cost.

[0041] Correspondingly, a lift limiter can be arranged on the other side of the exhaust valve flap 5 to limit the lift of the exhaust valve flap 5 and prevent it from failing due to excessive deformation.

[0042] In the application, the lift limiter can also not be arranged, and the cylinder cover 2 can be directly used to limit the lift function of the exhaust valve flap 5.

[0043] According to another aspect of the application, a pump body assembly is provided, comprising the valve plate assembly as described above.

[0044] In some embodiments, the pump body assembly further comprises a piston cylinder 3, the cylinder top of the piston cylinder 3 is arranged in an open manner; the first side 11 of the valve plate 1 covers and covers the cylinder top opening, and the groove 12 is matched and directly opposite to the chamber of the piston cylinder 3.

[0045] The application uses the valve plate 1 as the top cover of the cylinder, and the groove 12 is directly opposite to the chamber, which can ensure the reliability of the reciprocating motion of the piston 4 in the cylinder, and the whole structure is convenient to assemble and maintain; preferably, the pump body assembly further comprises a piston 4 slidingly fitted in the piston cylinder 3, and when the piston 4 runs to the outer dead point, the top part of the piston 4 extends into the groove 12.

[0046] Wherein, the position farthest from the crankshaft center of the piston 4 is called the outer dead point. The position closest to the crankshaft center of the piston 4 is called the inner dead point. When the piston 4 runs to the outer dead point, it can extend into the groove 12, which can increase the actual intake amount of the compressor, improve its refrigerating capacity, and improve its performance.

[0047] According to another aspect of the application, a compressor is provided, comprising the valve plate assembly as described above or the pump body assembly as described above.

[0048] In the application, the suction valve flap 6 and the exhaust valve flap 5 are cut into tongue spring parts that only realize the opening and closing functions, without extra edge design, and holes or other structures are arranged at the roots of the valve flaps to realize the positioning function, which greatly reduces the material usage and reduces the cost of the compressor.

[0049] In the present application, the groove 12 structure is arranged on the side where the suction valve plate 6 is located. Since the area of the suction hole 15 is larger than that of the exhaust hole 14, the machining difficulty of arranging the groove 12 on the side where the suction valve plate 6 is located is smaller than that of arranging the groove 12 on the side where the exhaust valve plate 5 is located. In addition, the exhaust valve plate 5 is directly attached to a larger plane, and the suction valve plate 6 is arranged in a larger groove 12, which is convenient for assembly. The suction valve plate 6 only needs a tongue spring part, and the material usage and cost are greatly reduced. Finally, the concave on the side where the suction valve plate 6 is located increases the stroke of the piston 4. The concave amount can be adjusted to adjust the stroke of the piston 4, so as to change the displacement of the compressor, and improve the refrigerating capacity and performance of the compressor.

[0050] Those skilled in the art can easily understand that the above-mentioned various embodiments can be freely combined and superimposed without conflict.

[0051] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, which should be regarded as the protection scope of the present application.

Claims

1. A valve plate assembly, characterized by The valve plate (1) comprises a first side (11) and a second side (16) arranged oppositely, and an exhaust hole (14) and an air intake hole (15) penetrating through the first side (11) and the second side (16); the air flow direction in the exhaust hole (14) is from the first side (11) to the second side (16), and the air flow direction in the air intake hole (15) is from the second side (16) to the first side (11); A groove (12) is arranged on the first side (11); the exhaust hole (14) and the air intake hole (15) are arranged on the groove bottom of the groove (12); The valve plate assembly further comprises an air intake valve plate (6), which is arranged in the groove (12) and covers the air intake hole (15); the groove bottom surface of the groove (12) comprises a limiting groove (13), and the air intake valve plate (6) is matchedly arranged in the limiting groove (13); the groove (12) is matchedly and oppositely arranged with the chamber of the piston cylinder (3) of the pump body assembly. The exhaust hole (14) is arranged at the position of the limiting groove (13), and the air intake valve plate (6) is provided with a through hole (61) corresponding to the position of the exhaust hole (14).

2. The valve plate assembly of claim 1, wherein, The air intake valve plate (6) and the inner circumferential wall of the limiting groove (13) are provided with a gap, and the size of the gap is 0.01-1.0 mm.

3. Valve plate assembly according to claim 1 or 2, characterized in that The valve plate assembly further comprises an exhaust valve plate (5), which is arranged on the side surface of the second side (16) and covers the exhaust hole (14).

4. The valve plate assembly of claim 1, wherein, The valve plate assembly comprises any one of claims 1-4.

5. A pump body assembly characterized by, The pump body assembly further comprises a piston cylinder (3), and the cylinder top of the piston cylinder (3) is arranged in an open manner; the first side (11) of the valve plate (1) is attached to and covers the cylinder top.

6. The pump body assembly of claim 5, wherein, The pump body assembly further comprises a piston (4) slidingly fitted in the piston cylinder (3), and when the piston (4) runs to the outer dead point, the top portion of the piston (4) extends into the groove (12).

7. The pump body assembly of claim 6, wherein, The valve plate assembly comprises any one of claims 1-4 or the pump body assembly comprises any one of claims 5-7.

8. A compressor characterized by, ​

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