CN111022299A

CN111022299A - Compressor air valve group, compressor and refrigerator

Info

Publication number: CN111022299A
Application number: CN201911216253.1A
Authority: CN
Inventors: 熊克强; 魏会军; 张率华; 申婷; 严耀宗
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai; Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-04-17

Abstract

The invention provides a compressor air valve group, a compressor and a refrigerator. The air valve set of the compressor comprises an air suction valve plate, wherein the air suction valve plate comprises a body, an air suction valve tongue is constructed on the body, the air suction valve tongue is provided with a sealing part covering an air suction port of an air cylinder and a connecting part arranged between the sealing part and the body, the sealing part is provided with a sector ring arc section, and the sector ring arc section is matched with the air suction port of the air cylinder in shape. According to the compressor air valve group, the compressor and the refrigerator, the sector ring arc section of the sealing part of the air suction valve tongue is matched with the shape of the air suction port of the air cylinder, so that the area of the cylinder hole of the air cylinder can be utilized to the maximum extent, the air suction area is ensured, the air suction efficiency is improved, and the refrigerating capacity and the energy efficiency of the compressor are improved.

Description

Compressor air valve group, compressor and refrigerator

Technical Field

The invention belongs to the technical field of compressor manufacturing, and particularly relates to a compressor air valve group, a compressor and a refrigerator.

Background

The refrigerator compressor is a core power element of the refrigerator, accounts for more than 80% of the power consumption of a refrigerator system, and the running performance and reliability of an air valve of the refrigerator compressor are the key points of the design of the compressor. The valve group component structure of the reciprocating compressor in the industry at present is mostly a single-hole reed valve, and the refrigerating capacity is usually smaller. Along with the requirements on the energy efficiency and the noise of the compressor are higher and higher, the design of the air valve is crucial to the noise and the performance, the natural frequency of an air suction valve tongue of the conventional air valve group structure is lower, the air suction valve has insufficient response to cause the backflow leakage of a refrigerant, and the air inflow is insufficient to cause the refrigerating capacity and the energy efficiency of the compressor to be lower.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to provide a compressor air valve set, a compressor and a refrigerator, wherein the sealing portion of the suction valve tongue has a sector ring arc section matched with the shape of the air suction port of the air cylinder, so that the area of the cylinder hole of the air cylinder can be utilized to the maximum extent, the air suction area is ensured, the air suction efficiency is further improved, and the improvement of the refrigeration capacity and the energy efficiency of the compressor is facilitated.

In order to solve the problems, the invention provides a compressor air valve group, which comprises an air suction valve plate, wherein the air suction valve plate comprises a body, an air suction valve tongue is constructed on the body, the air suction valve tongue is provided with a sealing part for covering an air suction port of an air cylinder and a connecting part positioned between the sealing part and the body, the sealing part is provided with a sector ring arc section, and the sector ring arc section is matched with the air suction port of the air cylinder in shape.

Preferably, the width of the connecting portion is the same as the maximum diameter of the sector ring arc section.

Preferably, the connecting portion is configured with a rigidity adjusting hole, and an area between the rigidity adjusting hole and the sealing portion forms the sector ring arc section.

Preferably, the connecting portion is further configured with a first exhaust hole, and the position of the first exhaust hole is adapted to the position of the exhaust port of the cylinder.

Preferably, the number of the first exhaust holes is plural, and the plural first exhaust holes are symmetrical with respect to a geometric symmetry line of the suction flap.

Preferably, the compressor air valve group further comprises a valve plate, the valve plate is located on one side of the air suction valve plate, and a second air exhaust hole corresponding to the first air exhaust hole and a first air suction hole corresponding to the fan ring arc section are formed in the valve plate.

Preferably, a separation rib is arranged in the first air suction hole.

Preferably, the compressor air valve group further comprises a first exhaust valve plate and a first gasket, the first exhaust valve plate is located between the valve plate and the first gasket, the first exhaust valve plate is provided with a plurality of first exhaust valve tongues, and the first exhaust valve tongues are arranged in one-to-one correspondence with the first exhaust holes.

Preferably, the compressor air valve group further comprises a second air vent valve plate and a second gasket, the second air vent valve plate is located between the first gasket and the second gasket, the second air vent valve plate is provided with a plurality of second air vent valve tongues, and the plurality of second air vent valve tongues and the plurality of first air vent valve tongues are arranged in a one-to-one correspondence manner.

Preferably, the thickness of the first gasket and/or the second gasket after being assembled with the cylinder is h, and h is more than or equal to 0.3mm and less than or equal to 0.5 mm.

The invention also provides a compressor, which comprises the compressor air valve assembly.

The invention also provides a refrigerator comprising the compressor.

According to the compressor air valve group, the compressor and the refrigerator, the fan-ring arc sections matched with the air suction ports of the air cylinders in shape are adopted, so that the area of the cylinder holes of the air cylinders can be utilized to the maximum extent, the maximum area of the air suction ports during air suction is ensured in the limited area of the cylinder holes of the air cylinders, the air suction area is ensured, the air suction resistance is reduced, the air suction efficiency is improved, and the refrigerating capacity and the energy efficiency of the compressor are improved.

Drawings

FIG. 1 is an exploded view of a valve train of a compressor according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the suction valve plate shown in FIG. 1;

FIG. 3 is a schematic structural view of the valve plate of FIG. 1;

FIG. 4 is a rear view of the valve plate of FIG. 3;

FIG. 5 is a schematic structural diagram of the first exhaust valve plate or the second exhaust valve plate in FIG. 1;

fig. 6 is a schematic structural diagram of the first gasket or the second gasket in fig. 1.

The reference numerals are represented as:

1. an air suction valve plate; 11. a body; 12. an intake valve flap; 121. a sealing part; 122. a connecting portion; 123. a stiffness adjustment aperture; 124. a first exhaust port; 2. a valve plate; 21. a second vent hole; 22. a first air-intake hole; 221. separating ribs; 23. a first seal line; 31. a first exhaust valve plate; 311. a first exhaust valve tongue; 32. a first gasket; 33. a second vent valve plate; 331. a second exhaust valve tongue; 34. a second gasket; 4. and a cylinder head.

Detailed Description

Referring to fig. 1 to 6 in combination, according to an embodiment of the present invention, there is provided a compressor valve assembly for controlling air suction and air exhaust of a piston compressor, including a suction valve plate 1, where the suction valve plate 1 includes a body 11, a suction valve tongue 12 is configured on the body 11, the suction valve tongue 12 has a sealing portion 121 covering an air suction port of a cylinder, and a connecting portion 122 between the sealing portion 121 and the body 11, the sealing portion 121 has a sector ring arc section, the sector ring arc section matches with a shape of the air suction port (not shown) of the cylinder, and when the compressor is in a suction process, under the action of negative pressure in the cylinder, the sector ring arc section is opened toward the air suction port of the cylinder, so as to form air suction. In the technical scheme, because the shape-matched fan-ring arc section of the air cylinder air suction port is adopted, the area of the air cylinder hole can be utilized to the maximum extent, the maximum area of the air suction port in the limited area of the air cylinder hole is ensured, the air suction area is ensured, the air suction resistance is reduced, the air suction efficiency is further improved, the refrigerating capacity and the energy efficiency of the compressor are favorably improved, and the single-hole reed valve in the prior art is beneficial to improving the refrigerating capacity and the energy efficiency of the compressor because a simple circular or similar rectangular sealing part is adopted to form waste, namely, the waste of the area is caused by the mismatching of the circular shape of the large round head sealing part and the air suction port of the air cylinder in the shape, and further, the conflict and the difficulty in the size are brought by constructing other structures on.

It will be appreciated that the opening angle of the seal 121 and the response rate of opening or closing will be affected by the stiffness of the connection 122. As a specific implementation manner, preferably, the width of the connecting portion 122 is the same as the maximum diameter of the sector ring arc section, so that the increase of the rigidity of the connecting portion 122 can be ensured, and the increase of the rigidity of the connecting portion 122 will undoubtedly increase the response rate of the suction valve tongue 12, especially when the compressor cylinder is in high-frequency operation, the suction valve tongue 12 can open or close the suction port more timely because of having a higher natural frequency (the corresponding rigidity is higher, the rigidity can be made reasonable by adjusting the thickness, and the natural frequency is also maintained to be higher), and especially can avoid the refrigerant backflow leakage phenomenon caused by the untimely closing of the suction valve tongue 12 in the prior art, thereby improving the refrigeration capacity and energy efficiency of the compressor.

As described above, the connection portion 122 having a large rigidity (i.e., the suction valve tongue 12) has an advantage of a large response rate, but when the rigidity is too large, it may cause an obstacle to the smooth opening of the suction valve tongue 12, and therefore, as a preferable mode, the connection portion 122 is configured with the rigidity adjusting hole 123, and an area between the rigidity adjusting hole 123 and the sealing portion 121 forms the sector arc section, and the rigidity of the suction valve tongue 12 can be directly determined by providing the rigidity adjusting hole 123 with different sizes, and it can be understood that the size and shape of the rigidity adjusting hole 123 may be reasonably determined according to the displacement, model, and the like of the compressor, for example, the shape of the rigidity adjusting hole 123 may be a circle.

Further, a first exhaust hole 124 is further configured on the connecting portion 122, the position of the first exhaust hole 124 is adapted to the position of an exhaust port of the cylinder, and the arrangement of the first exhaust hole 124 enables the suction valve plate 1 to be more optimized in structure, the area and the space thereof to be fully utilized, and on the other hand, the rigidity of the suction valve tongue 12 can be further optimized. Further, the number of the first exhaust holes 124 is plural, and the plural first exhaust holes 124 are symmetrical with respect to the geometric symmetry line of the suction valve tongue 12, so that the balance stability of the posture of the suction valve tongue 12 in the opening or closing process can be ensured, and the refrigerant backflow phenomenon caused by untimely closing due to the unbalance of the posture of the suction valve tongue 12 in the opening or closing process is prevented, and more importantly, the design of the plural first exhaust holes 124 can produce more favorable technical effects on the exhaust valve tongue matched therewith, which will not be repeated herein and will be explained in detail later.

The compressor air valve group further comprises a valve plate 2, the valve plate 2 is located on one side of the air suction valve plate 1, a second air exhaust hole 21 corresponding to the first air exhaust hole 124 and a first air suction hole 22 corresponding to the sector ring arc section are formed in the valve plate 2, the valve plate 2 is consistent with a valve plate in the prior art in function, and the structure of the valve plate 2 is adaptive to the structural improvement of the air suction valve plate 1, so that a corresponding air suction channel or an air exhaust channel is formed at the position of a cylinder head of a cylinder, for example, the corresponding first air suction hole 22 and the second air exhaust hole 21 are respectively formed. Furthermore, a partition rib 221 is arranged in the first air suction hole 22, which is beneficial to improving the strength of the valve plate 2. On one side of the valve plate 2 facing the air suction valve plate 1, a first sealing line 23 is further arranged on the peripheral side of the first air suction hole 22, so that the air valve is sealed and can be opened more easily. And a second sealing line is further arranged on one side of the valve plate 2 departing from the air suction valve plate 1 and on the peripheral side of the second exhaust hole 21.

Preferably, the compressor air valve group further includes a first exhaust valve plate 31 and a first gasket 32, the first exhaust valve plate 31 is located between the valve plate 2 and the first gasket 32, the first exhaust valve plate 31 is provided with a plurality of first exhaust valve tongues 311, and the first exhaust valve tongues 311 are in one-to-one correspondence with the first exhaust holes 124. More preferably, the compressor air valve set further includes a second air vent flap 33 and a second gasket 34, the second air vent flap 33 is located between the first gasket 32 and the second gasket 34, the second air vent flap 33 is provided with a plurality of second air vent flaps 331, and the plurality of second air vent flaps 331 and the plurality of first air vent flaps 311 are arranged in a one-to-one correspondence manner. Thus, a double-layer structure of the air valve assembly on the exhaust valve sheet is formed, and due to the double-layer structure, the corresponding lift of each layer of exhaust valve sheet corresponding to the first exhaust valve tongue 311 and the second exhaust valve tongue 331 is reduced, that is, the lift of the exhaust valve tongue on the single-layer exhaust valve sheet adopted in the prior art is far greater than that of the double-layer structure valve tongue in the present application, specifically, when the air valve assembly operates, when the first exhaust valve tongue 311 reaches the second exhaust valve tongue 331 under the action of the exhaust pressure, momentum exchange occurs between the first exhaust valve tongue 311 and the second exhaust valve tongue 331, the speed of the first exhaust valve tongue 311 is rapidly reduced, the rigidity is greater, the second exhaust valve tongue 331 then rushes towards a lift limiter (not shown in the figure) on the cylinder head 4 with greater acceleration, and because the first exhaust valve tongue 311 and the second exhaust valve tongue 331 are both smaller, the impact between the two and the impact speed between the second exhaust valve tongue 331 and the cylinder head 4 are both small, thereby effectively reducing the noise generated by the impact. It is further clear that, in the technical scheme, the existing single-hole exhaust valve tongues are improved into a structure with a plurality of exhaust valve tongues, so that the control on the exhaust of the air cylinder refrigerant can be realized by adopting a plurality of exhaust valve tongues with smaller sizes, and the smaller size has higher response speed due to the fact that the smaller size has shorter connecting arms, so that the refrigerating capacity of the compressor during high-speed operation can be effectively ensured, and the performance of the compressor is improved. As shown in fig. 5, the number of the first exhaust valve tongues 311 and the second exhaust valve tongues 331 is 3.

The thicknesses of the first gasket 32 and the second gasket are used for respectively limiting the lift of the first exhaust valve tongue 311 and the second exhaust valve tongue 331, preferably, the thickness of the first gasket 32 and/or the second gasket 34 after being assembled with the cylinder is h, h is greater than or equal to 0.3mm and less than or equal to 0.5mm, and it is prevented that the flow area of the refrigerant is limited because the impact force caused by too large thickness is too small and too large opening height is too small, and it can be understood that the first gasket 32 and the second gasket 34 are both provided with orifices corresponding to the suction and exhaust of the compressor, and the specific shapes and the sizes thereof can be the same, or can be respectively and independently designed.

The suction valve plate can be made of 0.1mm valve plate steel, for example.

According to an embodiment of the invention, a compressor is also provided, which comprises the compressor air valve assembly.

According to an embodiment of the invention, a refrigerator is also provided, which comprises the compressor. It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a compressor air valve valves, its characterized in that, includes suction valve block (1), suction valve block (1) includes body (11), be constructed suction valve tongue (12) on body (11), suction valve tongue (12) have the sealing (121) that cover the cylinder induction port and be in sealing (121) with connecting portion (122) between body (11), sealing (121) have fan ring segmental arc, fan ring segmental arc with the shape phase-match of cylinder induction port.

2. An air valve block according to claim 1, characterized in that the width of the connecting portion (122) is the same as the maximum diameter of the sector ring arc.

3. Valve group according to claim 1 or 2, characterized in that the connection portion (122) is configured with a stiffness adjustment aperture (123), the area between the stiffness adjustment aperture (123) and the sealing portion (121) forming the sector ring arc.

4. A valve manifold according to claim 3, characterized in that the connecting part (122) is further provided with a first exhaust hole (124), and the position of the first exhaust hole (124) is adapted to the position of the exhaust port of the cylinder.

5. The valve group according to claim 4, characterized in that the number of the first exhaust holes (124) is plural, and the plural first exhaust holes (124) are symmetrical about the geometric symmetry line of the suction flap (12).

6. The valve group according to claim 5, characterized by further comprising a valve plate (2), wherein the valve plate (2) is arranged on one side of the suction valve plate (1), and the valve plate (2) is provided with a second exhaust hole (21) corresponding to the first exhaust hole (124) and a first suction hole (22) corresponding to the sector ring arc.

7. The valve group according to claim 6, wherein a separation rib (221) is provided in the first suction hole (22).

8. The air valve group according to claim 6, further comprising a first exhaust valve plate (31) and a first gasket (32), wherein the first exhaust valve plate (31) is located between the valve plate (2) and the first gasket (32), the first exhaust valve plate (31) is provided with a plurality of first exhaust valve tongues (311), and the plurality of first exhaust valve tongues (311) and the plurality of first exhaust holes (124) are arranged in a one-to-one correspondence manner.

9. The air valve group according to claim 8, further comprising a second air vent valve plate (33) and a second gasket (34), wherein the second air vent valve plate (33) is located between the first gasket (32) and the second gasket (34), the second air vent valve plate (33) is provided with a plurality of second air vent valve tongues (331), and the plurality of second air vent valve tongues (331) and the plurality of first air vent valve tongues (311) are arranged in a one-to-one correspondence manner.

10. Valve group according to claim 9, characterized in that the first gasket (32) and/or the second gasket (34) have a thickness h, 0.3mm ≦ h ≦ 0.5mm after assembly with the cylinder.

11. A compressor comprising a valve assembly, wherein the valve assembly is a compressor valve assembly according to any one of claims 1 to 10.

12. A refrigerator comprising a compressor, characterized in that the compressor is the compressor of claim 11.