Exhaust valve plate, exhaust limiting plate and rotor compressor

Abstract

The utility model discloses an exhaust valve plate, exhaust limit plate and rotor compressor, the exhaust valve plate comprises a fixed part and an opening and closing part, the opening and closing part is provided with an arc-shaped valve plate end, the thickness of the valve plate end is gradually thinned from one end close to the fixed part to one end far away from the fixed part, and the opening and closing part is provided with an arc-shaped valve plate end. A regular profiling part is arranged on the periphery of the end head of the valve plate; the exhaust limiting plate comprises a mounting part and a stop limiting part, the stop limiting part is arranged to tilt upwards from the end close to the mounting part to the other end, the stop limiting part is used for lift limiting of the opening and closing part, and airflow lines are arranged on the face, facing the exhaust valve plate, of the stop limiting part; through the arrangement, the opening and closing resistance in the air suction and exhaust process can be obviously reduced, energy consumption is directly reduced, and the efficiency of the compressor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration compressors, in particular to an exhaust valve sheet, an exhaust limit plate and a rotor compressor. Background Art

[0002] Refrigeration compressor is one of the most important components of refrigeration equipment. Although there are many types, they basically increase the refrigerant from low pressure to high pressure through suction, compression and exhaust, and make the refrigerant circulate continuously, so that the system can continuously discharge internal heat to the external environment to achieve the effect of refrigeration.

[0003] During the operation of the refrigeration compressor, exhaust is one of the factors that affect its efficiency. Exhaust usually requires the cooperation of the exhaust valve plate and the exhaust limit plate. The valve plate and the limit plate of the traditional rotary compressor are riveted together with the upper cylinder cover through rivets, and the exhaust valve plate is mostly a sheet structure with uniform thickness. During the compression movement, the valve plate produces suction and exhaust action through the circular movement of the piston in the cylinder, and the valve plate bears the high-pressure, high-frequency, and high-load up and down opening and closing action; it is easy to generate noise and vibration from the exhaust valve plate hitting. At the same time, it will also form fluid resistance, affecting the performance of the compressor. Summary of the invention

[0004] The utility model aims to provide an exhaust valve sheet, an exhaust limit plate and a rotor compressor in view of the problems existing in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] On the one hand, the utility model provides an exhaust valve plate, which includes a fixed part and an opening and closing part, and the opening and closing part is provided with an arc-shaped valve plate end head, and the thickness of the valve plate end head is gradually thinner from one end close to the fixed part to the end away from the fixed part.

[0007] The exhaust valve plate can optimize the exhaust efficiency and effect by improving its shape and size. Specifically, through the design of the gradually thinner valve plate end, compared with the traditional valve plate, during the operation of the compressor, the opening and closing resistance of the suction and exhaust process can be significantly reduced, which directly reduces energy consumption and improves the efficiency of the compressor.

[0008] Furthermore, the average thickness of the exhaust valve sheet is between 0.2 and 0.5 mm, and the thinnest thickness of the end of the valve sheet is not less than 0.1 mm.

[0009] Furthermore, the thickness of the valve plate end is gradually thinned from 0.35 mm to 0.15 mm.

[0010] Furthermore, a regular profiling portion is provided on the outer periphery of the valve plate end, and the profiling portion is used to improve the gas flow path and air flow resistance, so as to optimize the noise generated during the suction and exhaust process.

[0011] Furthermore, the contoured portion is a lace-shaped structure, a sawtooth-shaped structure or a fish-fin-shaped structure arranged along the outer periphery of the valve plate end, and the sawtooth-shaped structure or the fish-fin-shaped structure is arranged symmetrically with respect to the center.

[0012] On the other hand, the utility model provides an exhaust limit plate, which includes a mounting portion and a stop limit portion, wherein the stop limit portion is upwardly tilted from one end close to the mounting portion to the other end, the mounting portion is connected to the fixed portion, and the stop limit portion is used for limiting the lift of the opening and closing portion.

[0013] Furthermore, the side of the stop limiter facing the exhaust valve plate is provided with airflow lines. Such lines make the exhaust limiter plate more capable of reducing fluid resistance and reducing the high-frequency noise generated by the flapping vibration of the valve plate; thus, the efficiency of the compressor can be improved, the noise can be reduced, the overall performance of the compressor can be optimized, and the user experience can be improved.

[0014] In some embodiments, the airflow patterns are a plurality of shallow grooves arranged along the width direction of the exhaust limiting plate, the depth of the shallow grooves is 0.2 to 0.45 mm, and adjacent shallow grooves are arranged at intervals of 0.9 to 1.2 mm.

[0015] In some embodiments, the air flow pattern is a concave-convex structure or an etched mesh structure.

[0016] The utility model also provides a rotary compressor, which is provided with a cylinder and an upper cylinder cover arranged on the cylinder, the upper cylinder cover is provided with a mounting groove, the mounting groove is provided with an exhaust hole, the exhaust valve plate and the exhaust limit plate are installed in the mounting groove, and the valve plate end cover is arranged on the exhaust hole.

[0017] Compared with the prior art, the beneficial effects of the utility model are: 1. Through the design of the gradually thinner valve plate end, the resistance of opening and closing during the suction and exhaust process can be significantly reduced during the operation of the compressor, which makes it easier to open, directly reduces energy consumption, and improves the efficiency of the compressor; 2. The setting of the contoured portion on the outer peripheral edge of the exhaust valve plate can improve the gas flow path and airflow resistance to optimize the noise generated during the suction and exhaust process; 3. Compared with ordinary limit plates, this exhaust limit plate with a texture on the lower surface has the ability to reduce fluid resistance and reduce the high-frequency noise generated by the flapping and vibration of the valve plate; thereby improving the efficiency of the compressor, reducing noise, optimizing the overall performance of the compressor, and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of an exhaust valve plate of the utility model;

[0019] Figure 2 This is a structural schematic diagram of an exhaust limit plate of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection between the exhaust valve plate and the exhaust limit plate of the utility model;

[0021] Figure 4 It is a schematic diagram of installing the exhaust valve plate and the exhaust limit plate in the rotor compressor of the utility model;

[0022] In the figure: 1. Exhaust valve plate; 101. Fixed part; 102. Opening and closing part; 103. Valve plate end; 104. Profiling part; 2. Exhaust limit plate; 201. Mounting part; 202. Stop limit part; 203. Shallow groove; 204. Overflow hole; 3. Riveted parts; 4. Upper cylinder cover; 5. Mounting groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] On the one hand, the utility model provides an exhaust valve plate, such as Figure 1 As shown, the exhaust valve plate 1 includes a fixed part 101 and an opening and closing part 102. The opening and closing part 102 is provided with an arc-shaped valve plate end 103. The thickness of the valve plate end 103 is gradually thinner from one end close to the fixed part 101 to the end away from the fixed part 101.

[0026] The exhaust valve plate can optimize the exhaust efficiency and effect by improving its shape and size. Specifically, through the design of the gradually thinner valve plate end, compared with the traditional valve plate, during the operation of the compressor, the opening and closing resistance of the suction and exhaust process can be significantly reduced, which directly reduces energy consumption and improves the efficiency of the compressor.

[0027] That is to say, the end of the exhaust valve plate 1 has a gradually thinning design along the opening direction, so that when the airflow hits the opening and closing part 102 from bottom to top, the force required to open it will be smaller due to the thinner size component of the valve plate end 103, which makes it easier to open. Moreover, in the process of the valve plate end 103 opening upward, the opening amplitude gradually increases upward. This gradually thinning design is more in line with its opening characteristics.

[0028] Furthermore, the average thickness of the exhaust valve plate 1 is 0.2-0.5 mm, and the thinnest thickness of the valve plate end 103 is not less than 0.1 mm. Preferably, the average thickness of the exhaust valve plate 1 is about 0.3 mm. Due to the tapered design at the end, the thickness at the edge will be smaller, but it cannot be too small to avoid adverse effects on its strength and service life.

[0029] Preferably, the thickness of the valve plate end 103 is gradually thinned from 0.35 mm to 0.15 mm, taking into account thinness, strength and flexibility, and the thin end is easier to open.

[0030] Furthermore, a regular profiling portion 104 is provided on the outer periphery of the valve plate end 103. The profiling portion 104 is used to improve the gas flow path and air flow resistance, so as to optimize the noise generated during the suction and exhaust process.

[0031] Furthermore, the contoured portion 104 is a lace-shaped structure, a sawtooth-shaped structure or a fish-fin-shaped structure arranged along the periphery of the valve plate end, and the sawtooth-shaped structure or the fish-fin-shaped structure is arranged symmetrically in the center. This regular symmetrical arrangement is not only beautiful and easy to manufacture, but also allows the gas to flow regularly without chaotically overflowing upwards, and has a certain guiding effect.

[0032] For example, the fin-shaped edge facilitates the opening and closing of the exhaust valve, eliminates fluid resistance, and actively improves the noise directly generated by valve vibration. This design can be widely used in refrigeration equipment, refrigeration appliances, and air pump valve groups.

[0033] In the present invention, the exhaust valve sheet 1 may be designed as a simple thinning, may be simply provided with a contoured portion, or may be provided with both a thinning and a contoured portion.

[0034] On the other hand, the utility model provides an exhaust limit plate, such as Figure 2As shown, the exhaust limit plate 2 includes a mounting portion 201 and a stop limit portion 202. The stop limit portion 202 is tilted upward from one end close to the mounting portion 201 to the other end. The mounting portion 201 is connected to the fixed portion 101 through a rivet 3 and fixed together on the valve plate or the upper cylinder head. The stop limit portion 202 is used to limit the lift of the opening and closing portion 102, thereby limiting the maximum opening angle of the exhaust valve plate 1.

[0035] Furthermore, the stop limiter 202 is provided with airflow textures on one side facing the exhaust valve plate 1. Compared with ordinary limit plates, this exhaust limit plate with textures on the lower surface has the ability to reduce fluid resistance and reduce the high-frequency noise generated by the flapping vibration of the valve plate; thus, the compressor efficiency can be improved, the noise can be reduced, the overall performance of the compressor can be optimized, and the user experience can be improved.

[0036] In some embodiments, the airflow pattern is a plurality of shallow grooves 203 arranged along the width direction of the exhaust limit plate 2, the depth of the shallow grooves 203 is 0.2-0.45 mm, and the adjacent shallow grooves 203 are arranged at intervals of 0.9-1.2 mm. Preferably, the depth of the shallow grooves 203 is about 0.3 mm, and the intervals are about 1 mm.

[0037] In some embodiments, the air flow pattern may also be a concave-convex structure or an etched mesh structure.

[0038] In some embodiments, the stop and limit portion of the exhaust limit plate 2 may also be inlaid with shock-absorbing and noise-reducing damping materials to enhance the buffering and vibration-reducing capabilities.

[0039] The utility model also provides a rotor compressor, combined with Figure 3 and Figure 4 As shown, the rotary compressor is provided with a cylinder and an upper cylinder cover 4 arranged on the cylinder, the upper cylinder cover 4 is provided with a mounting groove 5, the mounting groove 5 is provided with an exhaust hole, the exhaust valve plate 1 and the exhaust limit plate 2 are connected and fixed in the mounting groove by a rivet 35, the valve plate end 103 is covered on the exhaust hole, when there is airflow to exhaust upward, it will push the opening and closing part of the exhaust valve plate 1 opener, and the valve plate end 103 will be tilted upward to abut against the stop limit part 202. In this process, due to the thinning design of the valve plate end 103 and the setting of the fish fin-shaped edge, the valve plate end 103 is easier to open and the airflow resistance will be smaller. In combination with the shallow groove 203 set below the stop limit part 202, the fluid resistance is further reduced and the overall noise will be smaller.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust valve plate, characterized in that: The exhaust valve plate comprises a fixed part and an opening and closing part. The opening and closing part is provided with an arc-shaped valve plate end. The thickness of the valve plate end is gradually reduced from an end close to the fixed part to an end far away from the fixed part.

2. The exhaust valve sheet according to claim 1, characterized in that: The average thickness of the exhaust valve sheet is between 0.2 and 0.5 mm, and the thinnest thickness of the end of the valve sheet is not less than 0.1 mm.

3. The exhaust valve sheet according to claim 1, characterized in that: The thickness of the valve plate end is gradually reduced from 0.35 mm to 0.15 mm.

4. The exhaust valve sheet according to claim 1, characterized in that: The outer periphery of the valve plate end is provided with a regular profiling portion.

5. The exhaust valve sheet according to claim 4, characterized in that: The contoured portion is a lace-shaped structure, a sawtooth-shaped structure or a fish-fin-shaped structure arranged along the outer periphery of the valve plate end, and the sawtooth-shaped structure or the fish-fin-shaped structure is arranged symmetrically with respect to the center.

6. An exhaust limit plate for an exhaust valve sheet according to any one of claims 1 to 5, characterized in that: The exhaust limit plate includes a mounting portion and a stop limit portion, wherein the stop limit portion is tilted upward from one end close to the mounting portion to the other end, the mounting portion is connected to the fixed portion, and the stop limit portion is used for limiting the lift of the opening and closing portion.

7. The exhaust limiting plate according to claim 6, characterized in that: A side of the stop limit portion facing the exhaust valve sheet is provided with airflow patterns.

8. The exhaust limiting plate according to claim 7, characterized in that: The airflow patterns are a plurality of shallow grooves arranged along the width direction of the exhaust limiting plate, the depth of the shallow grooves is 0.2 to 0.45 mm, and adjacent shallow grooves are arranged at intervals of 0.9 to 1.2 mm.

9. The exhaust limiting plate according to claim 7, characterized in that: The airflow pattern is a concave-convex structure or an etched mesh structure.

10. A rotary compressor provided with the exhaust limit plate as claimed in claim 6, characterized in that: The rotary compressor is provided with a cylinder and an upper cylinder cover arranged on the cylinder, the upper cylinder cover is provided with a mounting groove, the mounting groove is provided with an exhaust hole, the exhaust valve plate and the exhaust limit plate are installed in the mounting groove, and the valve plate end cover is arranged on the exhaust hole.

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