Compressor valve train, compressor, refrigerator

Abstract

The application provides a compressor air valve group, a compressor and a refrigerator. The compressor air valve group comprises a suction valve plate, the suction valve plate comprises a body, a suction valve tongue is arranged on the body, the suction valve tongue has a sealing part covering a cylinder suction port and a connecting part between the sealing part and the body, and the sealing part has a fan ring arc segment which matches the shape of the cylinder suction port. The compressor air valve group, the compressor and the refrigerator provided by the application can make the best use of the area of the cylinder bore, ensure the suction area and improve the suction efficiency, so as to improve the refrigerating capacity and energy efficiency of the compressor.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of compressor manufacturing, and particularly relates to a compressor air valve group, a compressor and a refrigerator. BACKGROUND

[0002] The refrigerator compressor is a core power element of the refrigerator, and accounts for more than 80% of the power consumption of the refrigerator system. The operation performance and reliability of the air valve of the refrigerator compressor are the key to the design of the compressor. At present, the valve group assembly structure of the reciprocating compressor in the industry is mostly a single-hole tongue spring valve, and the refrigerating capacity is usually small. With the increasing requirements for the energy efficiency and noise of the compressor, the design of the air valve is crucial to the noise and performance, and the existing air valve group structure has the problems that the natural frequency of the suction valve tongue is low, the response of the suction air valve is insufficient, the refrigerant backflow leakage is caused, and the air intake is insufficient, so that the refrigerating capacity and energy efficiency of the compressor are low. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to provide a compressor air valve group, a compressor and a refrigerator. Since the sealing part of the suction valve tongue has a fan ring arc segment matched with the shape of the cylinder suction port, the area of the cylinder bore can be maximally utilized, the suction area is ensured, and the suction efficiency is improved, thereby improving the refrigerating capacity and energy efficiency of the compressor.

[0004] In order to solve the above problems, the present application provides a compressor air valve group, comprising a suction valve piece, the suction valve piece comprising a body, the body being provided with a suction valve tongue, the suction valve tongue having a sealing part covering the cylinder suction port and a connecting part between the sealing part and the body, the sealing part having a fan ring arc segment, and the fan ring arc segment being matched with the shape of the cylinder suction port.

[0005] Preferably, the width of the connecting part is the same as the maximum diameter of the fan ring arc segment.

[0006] Preferably, the connecting part is provided with a rigidity adjusting hole, and the area between the rigidity adjusting hole and the sealing part forms the fan ring arc segment.

[0007] Preferably, the connecting part is further provided 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.

[0008] Preferably, the number of the first exhaust holes is multiple, and the multiple first exhaust holes are symmetrical about the geometric symmetry line of the suction valve tongue.

[0009] Preferably, the compressor air valve group further comprises a valve plate, the valve plate being located on one side of the suction valve piece, and the valve plate being provided with a second exhaust hole corresponding to the first exhaust hole and a first suction hole corresponding to the fan ring arc segment.

[0010] Preferably, a partition rib is arranged in the first suction hole.

[0011] Preferably, the compressor valve group further comprises a first exhaust valve plate and a first gasket, the first exhaust valve plate is between the valve plate and the first gasket, and the first exhaust valve plate has a plurality of first exhaust valve tongues corresponding to the plurality of first exhaust holes.

[0012] Preferably, the compressor valve group further comprises a second exhaust valve plate and a second gasket, the second exhaust valve plate is between the first gasket and the second gasket, and the second exhaust valve plate has a plurality of second exhaust valve tongues corresponding to the plurality of first exhaust valve tongues.

[0013] Preferably, the thickness of the first gasket and / or the second gasket after being assembled with the cylinder is h, and 0.3mm≤h≤0.5mm.

[0014] The application further provides a compressor comprising the compressor valve assembly.

[0015] The application further provides a refrigerator comprising the compressor.

[0016] The compressor valve group, the compressor, and the refrigerator provided by the application can maximize the use of the area of the cylinder bore, ensure the maximum area of the suction port when the suction port is used for suction, ensure the suction area, reduce the suction resistance, and further improve the suction efficiency, thereby improving the refrigerating capacity and energy efficiency of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is an exploded structural schematic view of the compressor valve group of the embodiment of the application;

[0018] Figure 2 Fig. 2 is a structural schematic view of the suction valve plate; Figure 1

[0019] Figure 3 Fig. 3 is a structural schematic view of the valve plate; Figure 1

[0020] Figure 4 Fig. 4 is a rear view of the valve plate; Figure 3

[0021] Figure 5 Fig. 5 is a structural schematic view of the first exhaust valve plate or the second exhaust valve plate; Figure 1

[0022] Figure 6 Fig. 6 is a structural schematic view of the first gasket or the second gasket; and Figure 1 ​​​​Structure diagram of the first gasket or the second gasket.

[0023] Reference signs are indicated as:

[0024] 1, suction valve piece; 11, body; 12, suction valve tongue; 121, sealing part; 122, connecting part; 123, rigidity adjusting hole; 124, first exhaust hole; 2, valve plate; 21, second exhaust hole; 22, first suction hole; 221, partition rib; 23, first sealing line; 31, first exhaust valve piece; 311, first exhaust valve tongue; 32, first gasket; 33, second exhaust valve piece; 331, second exhaust valve tongue; 34, second gasket; 4, cylinder head. DETAILED DESCRIPTION

[0025] Reference is made in conjunction with Figures 1 to 6 As shown, according to the embodiment of the present application, a compressor valve group for controlling suction and exhaust of a piston compressor is provided, comprising a suction valve piece 1, the suction valve piece 1 comprising a body 11, the body 11 being configured with a suction valve tongue 12, the suction valve tongue 12 having a sealing part 121 covering a cylinder suction port and a connecting part 122 between the sealing part 121 and the body 11, the sealing part 121 having a fan ring arc segment, the fan ring arc segment matching the shape of the cylinder suction port (not shown in the figure), under the action of negative pressure in the cylinder, the fan ring arc segment will open towards the cylinder suction port when the compressor is in the suction process, thereby forming intake. In this technical solution, since the fan ring arc segment matching the shape of the cylinder suction port is adopted, the area of the cylinder bore can be maximally utilized, the area of the suction port when the suction port is suctioned is maximized in the limited cylinder bore area, the suction area is ensured, the suction resistance is reduced, and the suction efficiency is improved, which is beneficial to improving the refrigerating capacity and energy efficiency of the compressor. However, the single-hole tongue spring valve in the prior art adopts a simple circular or rectangular sealing part, which wastes the cylinder bore area, that is, the circular shape of the large round head sealing part and the shape of the cylinder suction port do not match, which leads to such area waste, and further brings size conflicts and difficulties to other structures on the suction valve piece 1.

[0026] It can be understood that the opening angle of the sealing portion 121 and the response rate of opening or closing will be affected by the rigidity of the connecting portion 122. As a specific embodiment, preferably, the width of the connecting portion 122 is the same as the maximum diameter of the fan ring arc segment, so as to ensure the improvement of the rigidity of the connecting portion 122, and the improvement of the rigidity of the connecting portion 122 will undoubtedly improve 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 due to its high natural frequency (corresponding to high rigidity, which can be adjusted by adjusting the thickness to make the rigidity reasonable, and the natural frequency is also maintained to be high), thereby avoiding the phenomenon of refrigerant backflow caused by the late closing of the suction valve tongue 12 in the prior art, and further improving the refrigerating capacity and energy efficiency of the compressor.

[0027] As described above, the connecting portion 122 (i.e. the suction valve tongue 12) with large rigidity has the advantage of high response rate, but when the rigidity is too large, it will cause obstacles to the smooth opening of the suction valve tongue 12. Therefore, as a preferred mode, a rigidity adjusting hole 123 is formed on the connecting portion 122, and the area between the rigidity adjusting hole 123 and the sealing portion 121 forms the fan ring arc segment. By setting the rigidity adjusting hole 123 with different sizes, the rigidity of the suction valve tongue 12 can be directly determined. It can be understood that the size and shape of the rigidity adjusting hole 123 can be reasonably determined according to the displacement and model of the compressor, for example, the rigidity adjusting hole 123 can be circular.

[0028] Further, a first exhaust hole 124 is further formed on the connecting portion 122, and the position of the first exhaust hole 124 is adapted to the position of the exhaust port of the cylinder. The setting of the first exhaust hole 124 can optimize the structure of the suction valve piece 1 and make full use of the area space, and further optimize the rigidity of the suction valve tongue 12. Further, the number of the first exhaust hole 124 is multiple, and the multiple first exhaust holes 124 are symmetrical about the geometric symmetry line of the suction valve tongue 12, so as to ensure the balance stability of the posture of the suction valve tongue 12 in the opening or closing process, prevent the phenomenon of refrigerant backflow caused by the imbalance of the posture of the suction valve tongue 12 in the opening or closing process, and more importantly, the design of the multiple first exhaust holes 124 can produce more favorable technical effects on the matched exhaust valve tongue, which will be described in detail later.

[0029] The compressor air valve valve group further comprises a valve plate 2, which is located on one side of the air inlet 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 air inlet hole 22 corresponding to the fan ring arc segment. The valve plate 2 is consistent with the valve plate in the prior art in function, and is adjusted adaptively to the structural improvement of the air inlet valve plate 1 in structure, so as to form corresponding air inlet passages or exhaust passages at the cylinder head position, for example, corresponding to the first air inlet hole 22 and the second exhaust hole 21 respectively. Further, the first air inlet hole 22 is provided with a partition rib 221, which is beneficial to improving the strength of the valve plate 2. On the side of the valve plate 2 facing the air inlet valve plate 1, the periphery of the first air inlet hole 22 is further provided with a first sealing line 23, which plays a sealing role for the air valve and makes the air valve easier to open. On the side of the valve plate 2 away from the air inlet valve plate 1, the periphery of the second exhaust hole 21 is further provided with a second sealing line.

[0030] Preferably, the compressor valve group further comprises a first exhaust valve plate 31 and a first gasket 32, the first exhaust valve plate 31 is between the valve plate 2 and the first gasket 32, and the first exhaust valve plate 31 has a plurality of first exhaust valve tongues 311, and the plurality of first exhaust valve tongues 311 are arranged one-to-one with the plurality of first exhaust holes 124. More preferably, the compressor valve group further comprises a second exhaust valve plate 33 and a second gasket 34, the second exhaust valve plate 33 is between the first gasket 32 and the second gasket 34, and the second exhaust valve plate 33 has a plurality of second exhaust valve tongues 331, and the plurality of second exhaust valve tongues 331 are arranged one-to-one with the plurality of first exhaust valve tongues 311. Thus, a double-layer structure of the valve assembly on the exhaust valve plate is formed. Due to the double-layer structure, the corresponding lift of each layer of the exhaust valve plate 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 plate in the prior art will be much larger than the lift of the valve tongue in the double-layer structure in the present application. Specifically, when the first exhaust valve tongue 311 reaches the second exhaust valve tongue 331 under the action of the exhaust pressure during the operation of the valve group, the first exhaust valve tongue 311 and the second exhaust valve tongue 331 exchange momentum, the speed of the first exhaust valve tongue 311 decreases rapidly and the rigidity is large, and the second exhaust valve tongue 331 then hits the lift limiter (not shown in the figure) on the cylinder head 4 with a large acceleration. Since the lift of the first exhaust valve tongue 311 and the second exhaust valve tongue 331 is small, the impact speed of the two and the impact speed of the second exhaust valve tongue 331 and the cylinder head 4 are small, thereby effectively reducing the noise generated by the impact. It should be further clarified that the single-hole exhaust valve tongue in the prior art is improved to a structure of a plurality of exhaust valve tongues in this technical solution, so that a plurality of exhaust valve tongues with smaller sizes can be used to control the refrigerant exhaust of the cylinder, and smaller sizes have higher response speed due to shorter connecting arms, which can effectively ensure the refrigerating capacity during high-speed operation of the compressor and improve the performance of the compressor. As shown in FIG. Figure 5 The number of the first exhaust valve tongue 311 and the second exhaust valve tongue 331 is 3.

[0031] The thickness of the first gasket 32 and the second gasket will form the lift limit of the first exhaust valve tongue 311 and the second exhaust valve tongue 331, respectively. Preferably, the thickness of the first gasket 32 and / or the second gasket 34 after assembly with the cylinder is h, 0.3mm≤h≤0.5mm, to prevent too large impact force caused by too large thickness and too small opening height caused by too small thickness from limiting the refrigerant flow area. It can be understood that the first gasket 32 and the second gasket 34 are both configured with holes corresponding to the suction and exhaust of the compressor, and the specific shape and size thereof can be the same or designed separately.

[0032] The foregoing suction valve plate can be made of 0.1 mm valve plate steel, for example.

[0033] According to the embodiments of the present application, there is also provided a compressor comprising the compressor valve assembly described above.

[0034] According to the embodiments of the present application, there is also provided a refrigerator comprising the compressor described above. Those skilled in the art will readily understand that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0035] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above merely describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and variations without departing from the technical principles of the present application, and these improvements and variations shall be considered as falling within the protection scope of the present application.

Claims

1. A compressor valve assembly, characterized in that, The system includes an intake valve plate (1), which includes a body (11) on which an intake valve tongue (12) is constructed. The intake valve tongue (12) has a sealing part (121) covering the intake port of the cylinder and a connecting part (122) between the sealing part (121) and the body (11). The sealing part (121) has a fan-shaped arc segment that matches the shape of the intake port of the cylinder. The system also includes a valve plate (2), which is located on one side of the intake valve plate (1). The valve plate (2) has a first intake hole (22) corresponding to the fan-shaped arc segment. The first intake hole (22) has a partition rib (221) inside. The system also 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) has a plurality of first exhaust valve tongues (32). 11) The connecting part (122) is also provided with a first exhaust hole (124), and a plurality of first exhaust valve tongues (311) are provided in a one-to-one correspondence with a plurality of first exhaust holes (124); it also includes a second exhaust valve plate (33) and a second gasket (34), the second exhaust valve plate (33) is located between the first gasket (32) and the second gasket (34), the second exhaust valve plate (33) has a plurality of second exhaust valve tongues (331), and the plurality of second exhaust valve tongues (331) are provided in a one-to-one correspondence with a plurality of first exhaust valve tongues (311). When the valve group is running, when the first exhaust valve tongue (311) impacts the second exhaust valve tongue (331) under the action of exhaust pressure, the first exhaust valve tongue (311) and the second exhaust valve tongue (331) exchange momentum; the thickness of the first gasket (32) and the second gasket (34) after assembly with the cylinder is h, 0.3mm≤h≤0.5mm.

2. The air valve assembly according to claim 1, characterized in that, The width of the connecting part (122) is the same as the maximum diameter of the fan ring arc segment.

3. The air valve assembly according to claim 1 or 2, characterized in that, The connecting part (122) is provided with a stiffness adjustment hole (123), and the area between the stiffness adjustment hole (123) and the sealing part (121) forms the fan ring arc segment.

4. The air valve assembly according to claim 3, characterized in that, The position of the first exhaust port (124) is adapted to the position of the exhaust port of the cylinder.

5. The air valve assembly according to claim 4, characterized in that, The number of the first exhaust holes (124) is multiple, and the multiple first exhaust holes (124) are symmetrical about the geometric symmetry line of the intake valve tongue (12).

6. The air valve assembly according to claim 5, characterized in that, The valve plate (2) is also provided with a second exhaust hole (21) corresponding to the first exhaust hole (124).

7. A compressor comprising a valve assembly, characterized in that, The valve assembly is the compressor valve assembly according to any one of claims 1 to 6.

8. A refrigerator, comprising a compressor, characterized in that, The compressor is the compressor described in claim 7.

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