Compressor structure, compressor and refrigeration equipment

Abstract

The invention discloses a compressor structure, a compressor and refrigeration equipment, and the compressor structure comprises an air cylinder seat which is provided with an air cylinder seat end face and a first cylinder hole; the filler block is made of plastic, the filler block extends from the first end face to the second end face in the thickness direction, the filler block is assembled on the air cylinder seat, the first end face is tightly attached to the end face of the air cylinder seat, the filler block is provided with a second cylinder hole aligned with the first cylinder hole, and the second cylinder hole penetrates from the first end face to the second end face; the air suction valve plate comprises a tongue piece, the tongue piece extends from the fixed end to the movable end, and a protruding tongue tip is arranged on the edge of the movable end of the tongue piece. The air suction valve plate is clamped on the second end face of the filler block through the valve plate, and an air suction hole is formed in the position, corresponding to the movable end of the tongue piece, of the valve plate; the second end face of the filler block is provided with a limiting groove at the edge of the second cylinder hole. The structure is simple, the filler block formed through plastic injection molding is diversified in scheme, easy to select and reliable to assemble, the air suction heat efficiency of the compressor is greatly improved, the piston abrasion risk is reduced, and the service life of the air suction valve plate is prolonged.

Description

Technical Field

[0001] The present invention is used in the field of compressors, and particularly relates to a compressor structure, a compressor and a refrigeration device. Background Art

[0002] Refrigerator compressors are usually reciprocating piston compressors. The refrigerant is pushed by the reciprocating motion of the piston to achieve a refrigeration cycle. Piston-type refrigerator compressors usually use parts such as suction valve plates, discharge valve plates and valve plates to control the flow of the refrigerant and achieve the functions of suction and discharge. When the refrigerant is compressed in the compressor cylinder, the temperature of the refrigerant rises sharply, and its heat is conducted out through the cylinder block made of metal and dissipated inside the compressor housing. In order to improve the gas path efficiency of piston-type refrigerator compressors, people hope that the heat generated during the gas compression process will not be dissipated inside the compressor housing to reduce suction superheat; at the same time, the thickness of the valve plate needs to be designed as thin as possible to reduce the reduction of the suction volume caused by the rigidity of the gas valve. The valve plate is formed by punching and grinding from a coil, and there is a possibility of tiny cracks in the edge of the valve plate at the micro scale.

[0003] An overly thin valve plate thickness results in a reduced valve plate life, and it is prone to breakage failure when encountering strong impacts. Especially when there are micro cracks in the edge of the valve plate, the cracks are likely to grow due to the impact force on the edge and finally lead to breakage failure. Therefore, avoiding the impact on the valve tongue edge can effectively reduce the risk of valve tongue breakage failure. Usually, a limit plate is used to control the lift of the discharge valve plate to prevent the discharge valve plate from opening too much. For conventional compressors, the pressure difference acting on the suction valve plate is small, the lift is low, and the force of the valve tongue hitting the valve plate is small, so it is not easy to have breakage failure. Therefore, a lift control device is usually not provided for the suction valve plate.

[0004] With the upgrading of domestic and international energy consumption standards, refrigerator compressors are rapidly becoming frequency-converting. Affected by the pressure of material costs, while the compressors are rapidly miniaturized, higher speeds are also being adopted to achieve larger cooling capacities with small compressors and further reduce costs. Excessively high speeds cause the temperature of the cylinder head of the variable-frequency compressor to rise sharply, and a large amount of harmful heat is dissipated inside the compressor housing. The housing size of the miniaturized compressor is getting smaller and smaller, making it difficult to quickly convect heat with the environment to reduce the housing temperature, resulting in a sharp increase in suction superheat; at the same time, the impact force on the valve plate increases sharply. Especially for the suction valve plate without a lift limiter, under the action of an ultra-high-speed variable-frequency compressor, the gas pressure difference on both sides of the tongue of the suction valve plate changes rapidly, resulting in an excessive lift. While strongly slapping the valve plate, the excessive lift will also cause the suction valve plate to slap the end face of the piston, resulting in excessive force on the edge of the suction valve plate and breakage failure. Some compressors are also equipped with a suction valve plate lift limiter, but it is impossible to avoid the direct contact between the valve tongue edge and the limiter, resulting in crack growth and even fracture failure due to the continuous action of the impact force on the edge micro-cracks.

[0005] In summary, the problems existing in the related art urgently need to be solved. Summary of the Invention

[0006] An object of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a compressor structure, a compressor, and a refrigeration device.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0008] In a first aspect, a compressor structure includes:

[0009] A cylinder block seat, provided with a cylinder block seat end face and a first cylinder bore;

[0010] A lining block, made of plastic, the lining block extends from a first end face to a second end face in the thickness direction, the lining block is assembled on the cylinder block seat, and the first end face is tightly attached to the cylinder block seat end face, the lining block is provided with a second cylinder bore aligned with the first cylinder bore, and the second cylinder bore penetrates from the first end face to the second end face;

[0011] An intake valve plate, including a tongue piece, the tongue piece extends from a fixed end to a movable end, and a protruding tongue tip is provided at the edge of the movable end of the tongue piece;

[0012] A valve plate, clamping the intake valve plate to the second end face of the lining block, and an intake hole is provided at a position corresponding to the movable end of the tongue piece on the valve plate;

[0013] Wherein, a limiting groove for cooperating with the tongue tip to limit the lift of the tongue piece is provided at the edge of the second cylinder bore on the second end face of the lining block, and the limiting groove stops before extending to the first end face.

[0014] In combination with the first aspect, in some implementation manners of the first aspect, a limiting boss for cooperating with the tongue tip is provided at the bottom of the limiting groove, and a first relief groove for avoiding the edge of the tongue tip is provided at the periphery of the limiting boss at the bottom of the limiting groove.

[0015] In combination with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the tongue tip is bent away from the lining block from the edge of the tongue piece, and the bending angle of the tongue tip is the same as the maximum angle when the tongue piece is opened.

[0016] In combination with the first aspect and the above implementation manners, in some implementation manners of the first aspect, a second relief groove is provided at a position corresponding to the tongue tip on the valve plate, and the bottom of the second relief groove is an inclined surface corresponding to the bent tongue tip.

[0017] Combined with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the suction valve plate further includes an outer frame, the outer frame is provided with a profiling hole corresponding to the tongue piece, the tongue piece is disposed in the profiling hole, and the fixed end of the tongue piece is fixedly connected to the outer frame.

[0018] Combined with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the cylinder block is provided with an exhaust silencing cavity and a throttle pipe installation hole, the throttle pipe installation hole extends from the end face of the cylinder block to the exhaust silencing cavity, a throttle pipe is provided in the throttle pipe installation hole, a throttle hole is provided inside the throttle pipe, and the throttle pipe is a plastic pipe.

[0019] Combined with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the throttle pipe and the lining block are integrally made of plastic, the throttle pipe extends from the first end face into the throttle pipe installation hole, and the lining block is provided with an exhaust hole communicating with the throttle pipe.

[0020] Combined with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the throttle pipe is provided with a primary pipe hole and a secondary pipe hole, and the aperture of the secondary pipe hole is smaller than the aperture of the primary pipe hole.

[0021] In a second aspect, a compressor includes the compressor structure according to any one of the implementation manners in the first aspect.

[0022] In a third aspect, a refrigeration device includes the compressor according to any one of the implementation manners in the second aspect.

[0023] At least one of the technical solutions in the above technical solutions has the following advantages or beneficial effects: In the present invention, a lining block with a certain thickness is provided on the end face of the cylinder block of the cylinder block. When the piston moves upward to compress the refrigerant vapor, at the end stage of compression, the temperature of the refrigerant gas reaches the highest. At this time, the high-temperature refrigerant gas is enclosed in the second cylinder hole of the lining block, avoiding the direct conduction of the heat of the high-temperature refrigerant to the cylinder block and greatly reducing the harmful heat conduction. When encountering extreme working conditions, the temperature of the cylinder head is too high, resulting in a significant reduction in the viscosity of the lubricating oil. For the lining block made of plastic, due to the thermal expansion and contraction, the inner diameter of its second cylinder hole expands and separates from the outer cylindrical surface of the piston top, avoiding the occurrence of dry friction caused by the reduction of the lubricating oil viscosity and effectively protecting the wear life of the compressor under harsh working conditions.

[0024] At the corresponding position of the tip of the tongue piece on the edge of the second cylinder hole of the lining block, a tongue piece lift limit groove is provided. The lining block is integrally made of high-strength plastic. Therefore, when the tongue piece reaches the maximum lift, the tip of the tongue piece contacts the limit groove made of plastic material, playing a buffering role and greatly reducing the impact force generated when the tip of the tongue piece contacts the lift limit groove, and well protecting the reliability of the suction valve plate.

[0025] The structure of the present invention is simple. The lining block formed by plastic injection molding has various schemes and is easy to select. The assembly is reliable, greatly improving the suction thermal efficiency of the compressor, significantly reducing the risk of piston wear, and protecting the service life of the suction valve plate.

[0026] The additional aspects and advantages of the present invention will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0027] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0028] Figure 1 is an exploded view of the structure of an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of the structure of the cylinder block of an embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of the structure of the lining block of an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of the structure of the lining block assembled on the cylinder block of an embodiment of the present invention;

[0032] Figure 5 is a schematic diagram of the structure of the tongue piece of an embodiment of the present invention;

[0033] Figure 6 is a schematic diagram of the mating structure of the tip of the tongue piece and the limiting groove of an embodiment of the present invention;

[0034] Figure 7 is a schematic diagram of the valve plate structure of the tongue piece of an embodiment of the present invention;

[0035] Figure 8 is a schematic diagram of the structure of the valve plate on which the suction valve plate of an embodiment of the present invention is assembled;

[0036] Figure 9 is a schematic diagram of the mating structure of the second relief groove of the suction valve plate and the valve plate of an embodiment of the present invention;

[0037] Figure 10 、 Figure 11 is a schematic diagram of the structure of two lining block embodiments of the throttle tube of the present invention adopting different throttling schemes.

[0038] Among them, the cylinder block 100, the cylinder block end face 101, the first cylinder bore 102, the exhaust silencing cavity 103, the throttle tube mounting hole 104;

[0039] The suction valve plate 200, the tongue piece 201, the tip 202, the outer frame 203;

[0040] Lining block 300, first end face 301, second end face 302, second cylinder hole 303, limit groove 304, limit boss 305, first relief groove 306, exhaust hole 307;

[0041] Valve plate 400, suction hole 401, second relief groove 402;

[0042] Piston 500;

[0043] Throttle pipe 600, primary pipe hole 601, secondary pipe hole 602. Detailed implementation manners

[0044] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0045] In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for the convenience of describing the technical solution of the present invention, rather than indicating or implying that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention.

[0046] In the present invention, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and "greater than", "less than", "exceeding", etc. are understood as not including the present number; "above", "below", "within", etc. are understood as including the present number. In the description of the present invention, if there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0047] In the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, or integrally formed; they can be mechanically connected, or electrically connected or capable of communicating with each other; they can be the internal connection of two components or the interaction relationship between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in the present invention in combination with the specific content of the technical solution.

[0048] See Figures 1 - 5, an embodiment of the present invention provides a compressor structure, including a cylinder block 100, a suction valve plate 200, a lining block 300 and a valve plate 400. Among them, the cylinder block 100 can be cast from gray cast iron, and the cylinder block 100 is provided with a cylinder block end face 101 and a first cylinder bore 102.

[0049] The lining block 300 is made of plastic and has a certain thickness. The lining block 300 extends from a first end face 301 to a second end face 302 along the thickness direction. The lining block 300 is assembled on the cylinder block 100, and the first end face 301 is closely attached to the cylinder block end face 101. The lining block 300 is provided with a second cylinder bore 303 aligned with the first cylinder bore 102. The second cylinder bore 303 penetrates from the first end face 301 to the second end face 302. After the lining block 300 and the cylinder block 100 are assembled into an integral body, the first cylinder bore 102 and the second cylinder bore 303 are docked to jointly define a cylinder bore that cooperates with the piston 500. During operation, the piston 500 moves along the cylinder bore and continuously compresses the refrigerant gas sucked into the cylinder bore.

[0050] The suction valve plate 200 includes a tongue piece 201. The tongue piece 201 extends from a fixed end to a movable end. The tongue piece 201 is made of an elastic sheet material, and a protruding tongue tip 202 is provided at the edge of the movable end of the tongue piece 201. The valve plate 400 clamps the suction valve plate 200 to the second end face 302 of the lining block 300. The valve plate 400 is provided with a suction hole 401 at a position corresponding to the movable end of the tongue piece 201. The tongue piece 201 is straight in the natural state and adheres to one end of the suction hole 401 facing the cylinder bore to close the suction hole 401. When the compressor sucks air, the piston 500 moves backward along the cylinder bore, and the movable end of the tongue piece 201 is opened toward the cylinder bore under the action of the pressure difference on both sides, conducting the suction hole 401.

[0051] Among them, the second end face 302 of the lining block 300 is provided with a limit groove 304 at the edge of the second cylinder bore 303 to cooperate with the tongue tip 202 to limit the lift of the tongue piece 201. The limit groove 304 stops before extending to the first end face 301. In other words, the bottom of the limit groove 304 is the plastic material of the lining block 300. The front end of the tongue piece 201 is provided with a protruding tongue tip 202, which cooperates with the limit groove 304 of the lining block 300 to control the lift of the tongue piece 201, reduce the impact force of the tongue piece 201 hitting the valve plate 400, and avoid breaking and failing due to excessive impact force.

[0052] See Figures 1 - 5, in the present invention, a lining block 300 with a certain thickness is provided on the end face 101 of the cylinder block 100 of the cylinder block. When the piston 500 moves upward to compress the refrigerant vapor, at the end stage of compression, the temperature of the refrigerant gas reaches the highest. At this time, the high-temperature refrigerant gas is enclosed in the second cylinder hole 303 of the lining block 300, avoiding the direct conduction of the heat of the high-temperature refrigerant to the cylinder block 100 and greatly reducing the harmful heat conduction. When encountering extreme working conditions, the temperature of the cylinder head is too high, resulting in a significant reduction in the viscosity of the lubricating oil. For the lining block 300 made of plastic, due to the effect of thermal expansion and contraction, the inner diameter of its second cylinder hole 303 expands and separates from the outer cylindrical surface of the top of the piston 500, avoiding the occurrence of dry friction caused by the reduction of the lubricating oil viscosity and effectively protecting the wear life of the compressor under harsh working conditions.

[0053] At the corresponding position of the tip 202 of the tongue piece 201 on the edge of the second cylinder hole 303 of the lining block 300, a tongue piece limiting groove 304 is provided. The whole lining block 300 is made of high-strength plastic. Therefore, when the tongue piece 201 reaches the maximum lift, the tip 202 contacts the limiting groove 304 made of plastic material, playing a buffering role and greatly reducing the impact force generated when the tip 202 contacts the lift limiting groove 304, and well protecting the reliability of the suction valve plate 200.

[0054] The structure of the present invention is simple. The lining block 300 formed by plastic injection molding has various schemes and is easy to select, with reliable assembly, greatly improving the suction heat efficiency of the compressor, greatly reducing the wear risk of the piston 500, and protecting the service life of the suction valve plate 200.

[0055] In some embodiments, referring to Figure 4 、 Figure 6 , in order to improve the stress condition of the edge of the tip 202 and avoid the growth of microcracks induced by the contact between the edge of the tip 202 and the limiting groove 304, a limiting boss 305 matching with the tip 202 is provided at the bottom of the limiting groove 304. The size of the limiting boss 305 is smaller than the contour size of the tip 202, and a first avoidance groove 306 for avoiding the edge of the tip 202 is provided at the bottom of the limiting groove 304 around the limiting boss 305. Therefore, the edges of the tip 202 are all located in the first avoidance groove 306, and when colliding, the edges of the tip 202 can be avoided from contacting the limiting groove 304, thus avoiding the influence of the edge microcracks on the reliability of the valve tongue due to the impact force.

[0056] Furthermore, referring to Figure 5 、 Figure 6, when the tongue tip 202 is opened, the lift at the forefront is the largest, and it will contact the limit groove 304 first, resulting in a point contact phenomenon at the edge of the forefront, which will break the tongue tip 202. To avoid the tongue tip 202 being broken due to point contact, the tongue tip 202 is bent away from the lining block 300 from the edge of the tongue piece 201, and the bending angle of the tongue tip 202 is the same as the maximum angle when the tongue piece 201 is opened. Assuming that the opening angle is 5° when the tongue piece 201 is opened to the maximum lift, the bending angle of the tongue tip 202 is also 5°. Therefore, when the tongue piece 201 reaches the maximum lift, the tongue tip 202 just forms a 0° angle state, and the contact with the limit groove 304 becomes a surface contact.

[0057] In some embodiments, referring to Figures 7 - 9 , the valve plate 400 is provided with a second avoidance groove 402 at the position corresponding to the tongue tip 202. The bottom of the second avoidance groove 402 is an inclined surface corresponding to the bent tongue tip 202, and the inclination angle is the same as the bending angle of the tongue tip 202. The contact between the tongue tip 202 and the second avoidance groove 402 becomes a surface contact, avoiding the impact force on the edge microcracks and affecting the reliability of the valve tongue.

[0058] In some embodiments, referring to Figure 1 , the suction valve sheet 200 further includes an outer frame 203. The outer frame 203 and the tongue piece 201 are both in the shape of thin sheets. The outer frame 203 is provided with a profiling hole corresponding to the tongue piece 201, and the tongue piece 201 is arranged in the profiling hole. The fixed end of the tongue piece 201 is fixedly connected to the outer frame 203. In this embodiment, the suction valve sheet 200 is composed of the outer frame 203 and the tongue piece 201. The tongue piece 201 is sleeved in the outer frame 203. The independent tongue piece 201 is convenient for improving the grinding and polishing quality and reducing the possibility of microcracks existing on the edge of the tongue piece 201.

[0059] Excessively high rotational speed will also cause a sharp increase in the compressor exhaust pulsation, affecting the vibration and noise performance of the small compressor. Therefore, different exhaust throttling schemes need to be set according to the cooling capacity of the product and the requirements for noise and vibration.

[0060] In some embodiments, referring to Figures 1 - 4 , the cylinder block 100 is provided with an exhaust silencing cavity 103 and a throttle pipe installation hole 104. The exhaust silencing cavity 103 is integrally formed on the cylinder block 100. The throttle pipe installation hole 104 extends from the cylinder block end face 101 to the exhaust silencing cavity 103. A throttle pipe 600 is provided in the throttle pipe installation hole 104, and a throttle hole is provided inside the throttle pipe 600. The throttle pipe 600 is arranged upstream of the exhaust silencing cavity 103, that is, between the cylinder head of the compressor and the exhaust silencing cavity 103, and plays a role in attenuating the exhaust pulsation through the internal throttle hole, reducing the vibration and noise of the compressor.

[0061] Further, the throttle tube 600 is made of plastic. Since the refrigerant in the exhaust system is in a high-temperature state, especially for a variable-frequency compressor with an ultra-high rotational speed, the exhaust temperature is even higher. By providing the throttle tube 600 made of plastic, the harmful heating of the exhaust system to the cylinder bore can be reduced, effectively isolating the transfer of the high temperature of the exhaust system to the cylinder bore, greatly reducing the suction superheat, and significantly improving the suction efficiency.

[0062] Among them, the throttle tube 600 can also be separately manufactured or integrally formed with the lining block 300. In some embodiments, referring to Figure 1 , Figure 3 , Figure 4 , Figure 10 , Figure 11 , the throttle tube 600 and the lining block 300 are integrally made of plastic. The throttle tube 600 extends from the first end face 301 into the throttle tube mounting hole 104. The lining block 300 is provided with an exhaust hole 307 communicating with the throttle tube 600. In this embodiment, the throttle tube 600 can be assembled with the lining block 300 on the cylinder block 100 together, which is more convenient for disassembly and assembly, and the positioning of the throttle tube 600 can be realized through the assembly of the lining block 300 on the cylinder block 100.

[0063] The existing cylinder block 100 is made of cast iron and is manufactured by machining, and the scheme lacks flexibility.

[0064] Among them, the throttle tube 600 is internally provided with multi-stage stepped holes. For example, in the embodiments shown in Figure 10 , Figure 11 , the throttle tube 600 is provided with a first-stage tube hole 601 and a second-stage tube hole 602. The aperture of the second-stage tube hole 602 is smaller than that of the first-stage tube hole 601. The first-stage tube hole 601 has a longer length and a larger inner diameter and is an exhaust hole. The second-stage tube hole 602 has a very short length and a very small inner diameter and is a throttle hole, which plays a role in attenuating the exhaust pulsation, reducing the vibration and noise of the compressor. The exhaust pulsations of compressor models with different refrigeration capacities are different. The larger the displacement, the larger the exhaust pulsation, and the smaller the displacement, the smaller the exhaust pulsation. Therefore, the throttle holes of the throttle tube 600 have different lengths and inner diameters. When the exhaust pulsation of the compressor model is large, a scheme with a longer throttle hole length and a smaller inner diameter is selected. On the contrary, when the exhaust pulsation of the compressor model is small, a scheme with a shorter throttle hole length and a smaller inner diameter is selected. Different design schemes of the lining block 300 can be selected according to the size of the compressor exhaust pulsation and the high or low rotational speed of the compressor to adjust the length and inner diameter of the throttle hole. Since the lining block 300 is injection-molded from plastic, it is very convenient to replace the scheme, and it is not necessary to machine different cylinder blocks 100 as in the traditional cylinder block 100, effectively reducing the production difficulty and saving the production and manufacturing cost.

[0065] The embodiment of the present invention also provides a compressor, including the compressor structure in any of the above embodiments.

[0066] An embodiment of the present invention further provides a refrigeration device, including the compressor in any of the above embodiments.

[0067] In the description of this specification, the descriptions with reference to the terms "example", "embodiment" or "some embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0068] Certainly, the present invention is not limited to the above embodiments. Those skilled in the art can also make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A compressor structure, characterized in that, Comprising: A cylinder block, provided with a cylinder block end face and a first cylinder bore; A lining block, made of plastic, the lining block extending from a first end face to a second end face in the thickness direction, the lining block being assembled to the cylinder block and the first end face being in close contact with the cylinder block end face, the lining block being provided with a second cylinder bore aligned with the first cylinder bore, the second cylinder bore penetrating from the first end face to the second end face; An intake valve plate, including a tongue piece, the tongue piece extending from a fixed end to a movable end, and a protruding tongue tip being provided at the edge of the movable end of the tongue piece; A valve plate, clamping the intake valve plate to the second end face of the lining block, the valve plate being provided with an intake hole at a position corresponding to the movable end of the tongue piece; Wherein, a limiting groove for cooperating with the tongue tip to limit the lift of the tongue piece is provided at the edge of the second cylinder bore on the second end face of the lining block, and the limiting groove stops before extending to the first end face.

2. The compressor structure according to claim 1, wherein, A limiting boss for cooperating with the tongue tip is provided at the bottom of the limiting groove, and a first relief groove for avoiding the edge of the tongue tip is provided at the periphery of the limiting boss at the bottom of the limiting groove.

3. The compressor structure according to claim 1, wherein The tongue tip is bent away from the lining block from the edge of the tongue piece, and the bending angle of the tongue tip is the same as the maximum angle when the tongue piece is opened.

4. The compressor structure according to claim 3, wherein, A second relief groove is provided at the position corresponding to the tongue tip on the valve plate, and the bottom of the second relief groove is an inclined plane corresponding to the bent tongue tip.

5. The compressor structure according to claim 1, characterized in that, The intake valve plate further includes an outer frame, the outer frame being provided with a profiling hole corresponding to the tongue piece, the tongue piece being disposed in the profiling hole, and the fixed end of the tongue piece being fixedly connected to the outer frame.

6. The compressor structure according to claim 1, characterized in that, The cylinder block is provided with an exhaust silencing cavity and a throttle pipe mounting hole, the throttle pipe mounting hole extending from the cylinder block end face to the exhaust silencing cavity, a throttle pipe being provided in the throttle pipe mounting hole, a throttle hole being provided inside the throttle pipe, and the throttle pipe being a plastic pipe.

7. The compressor structure according to claim 6, characterized in that, The throttle pipe and the lining block are integrally made of plastic, the throttle pipe extending into the throttle pipe mounting hole from the first end face, and the lining block being provided with an exhaust hole communicating with the throttle pipe.

8. The compressor structure according to claim 6, characterized in that, The throttle pipe is provided with a primary pipe hole and a secondary pipe hole, and the aperture of the secondary pipe hole is smaller than the aperture of the primary pipe hole.

9. A compressor, characterized in that, Including the compressor structure according to any one of claims 1 to 8.

10. A refrigeration device, characterized in that, Including the compressor according to claim 9.

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