Air suction valve plate, valve plate assembly and compressor

Abstract

The invention relates to the technical field of compressors, and provides an air suction valve plate, a valve plate assembly and a compressor, the air suction valve plate comprises a valve plate body, and at least one mounting hole is formed in the valve plate body; the shape of the valve tongue structure is matched with that of the mounting hole, the valve tongue structure comprises a root part, an arm part and a tongue part which are connected, part of the root part is fixedly connected with the valve plate body, the other part of the root part is not in contact with the hole wall of the mounting hole, the arm part is not in contact with the hole wall of the mounting hole, and the tongue part is not in contact with the hole wall of the mounting hole; wherein the width of the position, connected with the root part, of the arm part is the minimum width of the valve flap structure, and the arm part is provided with a first through hole. According to the technical scheme, the refrigerant can directly flow into the air cylinder through the first through hole, fluctuation of air suction pressure and pressure in the cylinder in the air suction process is reduced, air suction loss is reduced, and the efficiency of the compressor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and more particularly, to a suction valve plate, a valve plate assembly and a compressor. Background Art

[0002] At present, the suction valve plate of a compressor plays an important role during the operation of the compressor, and can achieve the unidirectional flow of the refrigerant. In the related art, the stiffness of the suction valve plate is relatively constant, resulting in high energy consumption during the operation of the compressor. Summary of the Invention

[0003] The present invention aims to at least solve the technical problem of high energy consumption during the operation of the compressor existing in the prior art or related art.

[0004] In view of this, a first aspect of the technical solution of the present invention provides a suction valve plate.

[0005] A second aspect of the technical solution of the present invention provides a valve plate assembly.

[0006] A third aspect of the technical solution of the present invention provides a compressor.

[0007] To achieve the above object, a technical solution of the present invention provides a suction valve plate, including: a valve plate body, on which at least one mounting hole is provided; a valve tongue structure, the shape of the valve tongue structure being adapted to the shape of the mounting hole, the valve tongue structure including a connected root portion, an arm portion and a tongue portion, a part of the root portion being fixedly connected to the valve plate body, the remaining part of the root portion not contacting the hole wall of the mounting hole, and the arm portion not contacting the hole wall of the mounting hole, and the tongue portion not contacting the hole wall of the mounting hole; wherein, the width at the position where the arm portion is connected to the root portion is the minimum width of the valve tongue structure, and the arm portion is provided with a first through hole; a partial contour of the tongue portion is arc-shaped, and sub-holes are provided at both ends of the side where the root portion is connected to the valve plate body, the minimum distance between the first through hole and a virtual circle corresponding to the arc-shaped partial contour is less than the maximum distance between the arm portion and the hole wall of the mounting hole; the shortest distance between the position where the arm portion is connected to the root portion and the first through hole is not less than 1 / 6 of the shortest vertical distance between the center of the circle corresponding to the arc-shaped contour in the tongue portion and the line connecting the two sub-holes.

[0008] The suction valve plate according to the present invention includes a valve plate body and a valve tongue structure. The valve plate body serves as the basic structure of the overall valve plate. The mounting hole and the valve tongue structure are provided on the valve plate body to ensure that the valve plate has sufficient strength and stiffness during the working process. The number of the mounting holes is one or more, and a valve tongue structure with a shape adapted to the mounting hole is arranged in the mounting hole. The movement of the valve tongue structure can realize the opening and closing of the valve plate and adjust the on-off of the air flow.

[0009] Specifically, the valve tongue structure includes a root part, an arm part, and a tongue part that are connected in sequence. A part of the root part is fixedly connected to the valve plate body to ensure the overall stability of the valve tongue. The arm part is used to connect the root part and the tongue part and plays a role in regulating the opening degree of the valve. The tongue part is directly in contact with the air flow and is used to open or close the air passage.

[0010] By defining the relative positions between the various parts of the valve tongue structure and the mounting hole, specifically, a part of the root part does not contact the hole wall of the mounting hole, and the other part is connected to the valve plate body. Neither the arm part nor the tongue part contacts the hole wall of the mounting hole, thereby allowing the valve tongue structure to move freely within the hole and reducing wear.

[0011] It should be emphasized that the boundary line between the arm part and the root part is the position with the smallest width, that is, the width at the position where the arm part is connected to the root part is the minimum width of the valve tongue structure. By providing a first through hole on the arm part, the weight of the valve tongue structure can be reduced, the inertia can be lowered, and at the same time, the air flow can be promoted under the action of the first through hole, reducing the resistance.

[0012] During the suction process, under the action of the first through hole, the suction muffler and the cylinder are always kept connected. The refrigerant can directly flow into the cylinder through the first through hole, reducing the fluctuations of the suction pressure and the cylinder pressure during the suction process, reducing the suction loss, which is beneficial to improving the efficiency of the compressor. At the same time, the first through hole is beneficial to reducing the stiffness of the valve plate and increasing the lift height of the valve plate during the suction process. During the opening process of the valve plate, the refrigerant can also flow into the cylinder through the suction port and the first through hole, increasing the effective flow area and improving the suction flow rate.

[0013] Furthermore, the arm part in the valve tongue structure is the key "lever" part connecting the root part and the tongue part, undertaking the role of transmitting force and motion. Since the arm part is usually long and relatively slender, its mass has a greater impact on the overall inertia of the valve tongue. The first through hole is opened on the arm part, effectively reducing the mass in this area, lowering the overall weight and moment of inertia of the valve tongue, reducing the inertial resistance when the valve tongue opens and closes, making the valve plate respond more sensitively and open more quickly, reducing the vibration and impact generated during the movement process, and enhancing the durability of the valve plate and the entire valve group. More importantly, under the action of the first through hole, the energy consumption can be reduced, especially significantly in high-frequency reciprocating compressors.

[0014] As the "force transmission rod" of the valve tongue, the arm part is usually the area prone to stress concentration and fatigue. The first through hole can change the local stress field, achieve stress redistribution, subtract part of the material through the through hole, avoid stress concentration in a certain small area, and reduce the crack initiation point.

[0015] In addition, the first through-hole on the arm is not only a structural feature but also provides an additional channel for refrigerant flow. During the suction process, the refrigerant can partially flow into the cylinder or the back of the valve plate through the through-hole, relieving the local pressure difference, helping to reduce the back pressure of the valve plate, lowering the opening resistance, improving the flow efficiency, increasing the effective flow area, reducing the vibration noise of the valve plate, and achieving a quieter operation.

[0016] Of course, the first through-hole makes the cross-sectional shape of this area more complex, changes the local stiffness distribution, moderately reduces the stiffness of the arm, makes the elastic deformation characteristics of the valve tongue more suitable for the dynamic response during the suction process. Combined with the hollow design, the overall stiffness of the valve tongue is reduced, but it still maintains sufficient strength to increase the lift height.

[0017] In addition, the local contour of the tongue is defined as an arc shape, and the center of the circle determines the geometric center of the arc. Sub-holes are provided at both ends of the side where the root is connected to the valve plate body, and a connection line is formed between these two sub-holes. The position where the arm is connected to the root, that is, the arm-root connection, is one of the weakest points of the valve tongue structure. The first through-hole is located on the arm and there is a shortest distance from the arm-root connection. By limiting the ratio of the shortest distance between the arm-root connection and the first through-hole to the shortest perpendicular distance from the center of the arc of the tongue to the connection line of the sub-holes, that is, the shortest distance between the position where the arm is connected to the root and the first through-hole is not less than 1 / 6 of the shortest perpendicular distance from the center of the arc-shaped contour of the tongue to the connection line between the two sub-holes. The arm-root connection is the stress concentration point and the potential starting position of fatigue cracks of the valve tongue structure. Ensuring a sufficient distance between this area and the first through-hole can avoid the reduction of local strength caused by the proximity of the through-hole. By making a proportional limit based on the geometric relationship between the center of the arc of the tongue and the distance between the sub-holes, the reasonable spatial layout of the design is guaranteed, and the overall stiffness and toughness of the valve plate are maintained.

[0018] The distance between the center of the arc contour and the connection line of the sub-holes reflects the geometric dimensions and structural characteristics of the tongue. Based on this geometric feature, the shortest distance between the arm-root connection and the first through-hole is limited to ensure the coordination of the structures of each part of the valve plate and avoid local over-weakening.

[0019] It can be understood that by maintaining a reasonable distance between the arm-root connection and the first through-hole, it is beneficial to the stability and flexibility of the movement of the valve tongue structure, and can avoid the uneven stiffness caused by the too-close distance between the through-hole and the arm-root connection, thereby affecting the deformation and response during the opening process of the valve plate.

[0020] Among them, the local contour of the tongue is in an arc shape, and this local contour can be described by a virtual circle, that is, this local contour coincides with the corresponding virtual circle. The minimum distance between the first through-hole and the virtual circle is the shortest distance from the edge of the first through-hole to the boundary of the virtual circle corresponding to this arc. The maximum distance between the arm and the wall of the mounting hole is the maximum distance between the outer wall of the arm and the wall of the mounting hole, which reflects the maximum gap of the arm in the mounting hole.

[0021] By restricting the minimum distance between the first through-hole and the virtual circle corresponding to the arc-shaped local contour to be less than the maximum distance between the arm and the hole wall of the mounting hole, it is ensured that the first through-hole is close enough to the arc contour of the tongue, but does not exceed the maximum clearance range between the arm and the mounting hole. That is to say, the first through-hole does not exceed the mounting hole of the arm, avoiding structural conflicts. In addition, if the first through-hole is too far from the virtual circle, it may cause the local material of the arm to be too thick and the stiffness to be too large, affecting the dynamic response of the valve plate. If the distance is too close, it may cause the local part of the arm to be too thin, prone to stress concentration or fatigue failure. It can be understood that by defining this distance to be less than the maximum distance between the arm and the hole wall of the mounting hole, the balance between stiffness and strength is achieved.

[0022] It should be emphasized that the tongue is arranged opposite to the suction hole and needs to be opened during suction and close the suction hole in other states. Therefore, the tongue needs to completely cover the suction hole to facilitate the normal operation of the compressor. In this solution, by restricting the minimum distance between the first through-hole and the virtual circle corresponding to the arc-shaped local contour to be less than the maximum distance between the arm and the hole wall of the mounting hole, the opening range of the first through-hole can be restricted on the basis of ensuring the normal operation of the compressor.

[0023] In some technical solutions, optionally, the shortest distance between the inner surface of the first through-hole and the outer wall surface of the arm is not less than 0.125 times the maximum width of the arm.

[0024] In this technical solution, by restricting the width of the narrow arm part generated by setting the first through-hole on the arm, restricting its shortest width to be greater than or equal to 0.125 times the maximum width of the arm, the first through-hole will not be too close to the boundary of the arm, avoiding local stress concentration or cracks caused by too close distance under impact, vibration or high stress conditions. By maintaining a certain margin, it helps to maintain the overall stiffness of the arm and avoid local weakening caused by the through-hole position being too close to the edge.

[0025] In addition, when the first through-hole is close to the boundary or edge, it is easy to form a stress concentration area around the hole. By setting the minimum distance (i.e., 0.125 times the maximum width), it is ensured that there is enough material buffer around the through-hole, thereby reducing stress concentration and prolonging the fatigue life.

[0026] Of course, it also helps to maintain the integrity of the fluid channel of the arm, avoid the through-hole being too close to the boundary, resulting in an increase in flow resistance or enhanced turbulence, maintain a reasonable distance, ensure smooth refrigerant flow, and reduce air flow disturbance.

[0027] In some technical solutions, optionally, the aperture of the sub-hole is greater than the distance between a part of the root and a part of the hole wall of the mounting hole.

[0028] In this technical solution, the sub-holes are holes located at both ends of the side where the root is connected to the valve disc body. The distance between the root and a part of the hole wall of the mounting hole is the minimum distance between the local part of the root and the hole wall of the mounting hole (i.e., the width of the gap between the root and the hole wall of the mounting hole). By restricting the aperture of the sub-holes to be larger than this local distance between the root and the hole wall of the mounting hole, the flexibility and deformation ability of the root structure are enhanced.

[0029] Specifically, the relatively large aperture of the sub-holes means that the openings of the sub-holes at both ends of the root are wider, which helps the local elastic deformation of the root.

[0030] Since the distance between the root and the hole wall of the mounting hole is relatively small, if the aperture of the sub-holes is smaller than this distance, the root may be too rigid, resulting in insufficient rigidity or limited deformation during the movement of the valve tongue structure. The design of the relatively large aperture of the sub-holes enables the root to have a certain degree of flexibility, which can better withstand the stress and deformation in the reciprocating motion and reduce fatigue damage.

[0031] In addition, the root is the key stress-bearing part of the valve disc. With a relatively large aperture of the sub-holes, the stress distribution is more uniform, reducing stress concentration caused by sharp edges or narrow gaps, delaying the occurrence of fatigue cracks, and improving the service life of the valve disc.

[0032] In some technical solutions, optionally, the contour of one side of the first through-hole close to the tongue is arc-shaped.

[0033] In this technical solution, on the side of the first through-hole close to the tongue, the edge or contour of its hole opening is designed as an arc shape instead of a straight line or polygon, which can effectively disperse stress and prevent the hole edge from becoming the starting point of cracks.

[0034] In addition, the arc contour is easy to machine, especially through processes such as drilling, milling, or laser cutting, reducing the processing difficulty and the risk of manufacturing defects such as cracks and burrs.

[0035] Of course, the arc shape helps to maintain the material continuity and strength in the hole edge area and avoid local deformation caused by geometric discontinuity.

[0036] In some technical solutions, optionally, the outer surface of a part of the root is parallel to the inner surface of a part of the hole wall of the mounting hole; and / or the outer surface of the arm part is parallel to the inner surface of a part of the hole wall of the mounting hole; and / or the outer surface of the tongue is parallel to the inner surface of a part of the hole wall of the mounting hole.

[0037] In this technical solution, the outer surfaces of the root part, the arm part, and the tongue part are designed to be parallel to the inner surface of the mounting hole in some areas. This parallel design is partial, that is, only some surfaces meet this condition, which can ensure the stable positioning of the valve plate in the mounting hole. It can be understood that the contact of parallel surfaces or approximate parallelism can achieve a good fit between the valve plate and the mounting hole, which is beneficial to the positioning and guiding of the valve plate in the mounting hole, preventing the valve plate from shifting or shaking during operation, and improving the assembly accuracy and motion stability of the valve plate.

[0038] Of course, the design of parallel surfaces conforms to the conventional process of machining, which is easy to control the dimensional and geometric tolerances. During assembly, the valve plate can be smoothly inserted into the mounting hole, reducing the assembly difficulty, lowering the manufacturing cost, and improving the assembly efficiency.

[0039] It can be understood that the parallel surface fit ensures that the valve plate can freely lift or swing in the hole along a predetermined direction, avoiding jamming or excessive resistance, which helps the valve plate to quickly respond to the change of air flow pressure and achieve an efficient suction action.

[0040] In some technical solutions, optionally, the valve tongue structure is a symmetric structure, and the symmetry line of the valve tongue structure passes through the center of the tongue part with a locally circular arc-shaped contour.

[0041] In this solution, by restricting the symmetry of the valve tongue structure, that is, the shape and size of the valve tongue structure are completely mirror-imaged with respect to a central symmetry line, and the symmetry line passes through the center of the locally circular arc contour of the tongue part, that is, the circular arc shape of the tongue part is evenly distributed on both sides of the symmetry line, forming a complete geometric symmetry.

[0042] On this basis, the symmetric structure ensures that when the valve tongue is stressed, the force and stress are evenly distributed, and there will be no eccentric load or bending deformation due to the asymmetric structure. The symmetry line passes through the center of the tongue part, further ensuring the uniform force on the circular arc of the tongue part, reducing stress concentration, improving the overall stiffness and durability of the valve plate, and extending the service life.

[0043] Of course, when the symmetric valve tongue structure is opened and closed, the action is balanced, avoiding yaw or jamming. The center of the tongue part is the passing point of the symmetry line, ensuring that the forces on both sides of the valve tongue are consistent, the movement trajectory is smooth, improving the opening sensitivity and sealing performance of the valve plate, and reducing noise and vibration.

[0044] In some technical solutions, optionally, the number of mounting holes is one, the valve tongue structure is correspondingly arranged in the mounting hole, and a second through hole is provided on the valve plate body, and the second through hole is communicated with the mounting hole.

[0045] In this solution, a single mounting hole is designed. There is only one mounting hole on the valve disc body, which is used to fix and position the valve tongue structure. The valve tongue structure is connected to the valve disc body through the mounting hole to ensure the movement and positioning of the valve tongue. The second through-hole is provided on the valve disc body and is connected to the mounting hole to form a flow path. Specifically, the second through-hole serves as an exhaust hole and is responsible for exhausting air inside a single mounting hole.

[0046] In some technical solutions, optionally, the number of mounting holes is at least two. At least two mounting holes are connected to each other. The number of valve tongue structures is at least two. Each valve tongue structure is correspondingly arranged in one mounting hole. A third through-hole is provided on the valve disc body, and the third through-hole is provided between two mounting holes. Among them, at least two valve tongue structures are symmetric about a symmetry axis, and the symmetry axis passes through the axis of the third through-hole.

[0047] In this solution, the number of mounting holes is two or more, and multiple mounting holes are connected to each other. Each mounting hole is equipped with a valve tongue to achieve multi-point control or multi-channel fluid regulation. The third through-hole is provided between two mounting holes. The third through-hole serves as an exhaust hole and is located on the valve disc body, specifically provided between two mounting holes, making the pressure on the valve disc more uniform during exhaust. Among them, at least two valve tongue structures are symmetrically arranged about a symmetry axis, and the symmetry axis passes through the axis of the third through-hole to ensure structural and force symmetry.

[0048] Multiple mounting holes and multiple valve tongue structures disperse the load, reduce stress concentration at a single point. The symmetrically arranged valve tongue structures make the force uniform, avoid structural deformation and fatigue damage, and improve the mechanical strength and service life of the valve disc.

[0049] Each valve tongue structure corresponds to a separate mounting hole, with independent and coordinated movement, avoiding interference. The symmetric valve tongue structures ensure the balance of the valve disc opening and closing, reduce vibration and noise, and improve response sensitivity and sealing performance.

[0050] It should be added that the part of the valve disc body corresponding to the number of mounting holes can be divided into two solutions. In one solution, a second through-hole is provided on the valve disc body, and the second through-hole is connected to the mounting hole and serves as an exhaust hole. In another solution, a third through-hole is provided on the valve disc body, and the third through-hole is provided between two mounting holes and serves as an exhaust hole.

[0051] The second aspect of this application provides a valve disc assembly, including: a valve plate; any one of the above suction valve discs, which is arranged on one side of the valve plate.

[0052] According to the valve disc assembly provided by this application, it includes a valve plate and a suction valve disc arranged on one side of the valve plate. Among them, the valve plate serves as the basic structure of the valve disc assembly, which is used to position the suction valve disc and bear the air flow pressure. The suction valve disc is installed on one side of the valve plate and is responsible for controlling the refrigerant suction flow rate to achieve the opening and closing functions.

[0053] Since the valve plate assembly includes any one of the above-mentioned suction valve plates, it has the beneficial effects of any one of the above-mentioned suction valve plates, which will not be elaborated here.

[0054] The third aspect of the present application provides a compressor, including: any one of the above-mentioned valve plate assemblies.

[0055] The compressor provided by the present application is used to compress a gas (such as refrigerant) to achieve a refrigeration or heating function.

[0056] Since the compressor includes any one of the above-mentioned valve plate assemblies, it has the beneficial effects of any one of the above-mentioned valve plate assemblies, which will not be elaborated here.

[0057] The additional aspects and advantages of the present invention will become apparent in the following description section, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 The structural schematic diagram of the suction valve plate according to an embodiment of the present invention is shown; Figure 2 The structural schematic diagram of the suction valve plate according to an embodiment of the present invention is shown; Figure 3 The structural schematic diagram of the suction valve plate according to an embodiment of the present invention is shown; Figure 4 The structural schematic diagram of the suction valve plate according to an embodiment of the present invention is shown; Figure 5 The structural schematic diagram of the suction valve plate according to an embodiment of the present invention is shown; Figure 6 The structural schematic diagram of the suction valve plate according to an embodiment of the present invention is shown; Figure 7 The structural schematic diagram of the suction valve plate according to an embodiment of the present invention is shown; Figure 8 The structural schematic diagram of the valve plate assembly according to an embodiment of the present invention is shown; Figure 9 The structural schematic diagram of the compressor according to an embodiment of the present invention is shown.

[0059] Wherein, Figures 1 to 9 The corresponding relationship between the reference numerals and the component names in the drawings is as follows: 100: suction valve plate; 102: valve plate body; 1022: mounting hole; 104: valve tongue structure; 1042: root; 1044: arm; 1046: tongue; 106: first through hole; 108: sub-hole; 110: second through hole; 112: third through hole; 114: symmetry axis; 116: virtual circle; 200: valve plate assembly; 202: valve plate; 300: Compressor. Detailed implementation manners

[0060] In order to more clearly understand the above objects, features and advantages of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0061] In the following description, many specific details are set forth in order to fully understand the present application. However, the embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited to the limitations of the specific embodiments disclosed below.

[0062] The following refers to Figures 1 to 9 Describe some embodiments according to the present invention.

[0063] As Figure 1 and Figure 2 shown, this embodiment provides an intake valve plate 100, which includes a valve plate body 102 and a valve tongue structure 104. The valve plate body 102 serves as the basic structure of the overall valve plate. An installation hole 1022 and a valve tongue structure 104 are provided on the valve plate body 102 to ensure that the valve plate has sufficient strength and stiffness during operation. The number of the installation holes 1022 is one or more. A valve tongue structure 104 with a shape adapted thereto is provided in the installation hole 1022. The movement of the valve tongue structure 104 can realize the opening and closing of the valve plate and regulate the on-off of the air flow.

[0064] Specifically, the valve tongue structure 104 includes a root portion 1042, an arm portion 1044 and a tongue portion 1046 that are connected in sequence. A part of the root portion 1042 is fixedly connected to the valve plate body 102 to ensure the overall stability of the valve tongue. The arm portion 1044 is used to connect the root portion 1042 and the tongue portion 1046 and plays a role in regulating the opening degree of the valve. The tongue portion 1046 is directly in contact with the air flow and is used to open or close the air passage.

[0065] By defining the relative positions between the respective parts of the valve tongue structure 104 and the installation hole 1022, specifically, a part of the root portion 1042 does not contact the hole wall of the installation hole 1022, and the other part is connected to the valve plate body 102. Neither the arm portion 1044 nor the tongue portion 1046 contacts the hole wall of the installation hole 1022, thereby allowing the valve tongue structure 104 to move freely in the hole and reducing wear.

[0066] It should be emphasized that the boundary line between the arm portion 1044 and the root portion 1042 is the position with the minimum width, that is, the width at the position where the arm portion 1044 is connected to the root portion 1042 is the minimum width of the valve tongue structure 104. By providing the first through hole 106 on the arm portion 1044, the weight of the valve tongue structure 104 can be reduced, the inertia can be decreased, and at the same time, the air flow can be promoted under the action of the first through hole 106, and the resistance can be reduced.

[0067] Among them, the shape of the first through hole 106 can be any shape, for example Figure 1 the trapezoid-like shape shown, or Figure 3 the circular shape shown, or Figure 4 the rectangular shape shown, or even Figure 6 the triangle-like shape shown.

[0068] Furthermore, the arm portion 1044 in the valve tongue structure 104 is the key "lever" part connecting the root portion 1042 and the tongue portion 1046, and undertakes the role of transmitting force and motion. Since the arm portion 1044 is usually long and relatively slender, its mass has a greater impact on the overall inertia of the valve tongue. The first through hole 106 is opened on the arm portion 1044, effectively reducing the mass of this area, lowering the overall weight and moment of inertia of the valve tongue, reducing the inertial resistance when the valve tongue opens and closes, making the valve disc respond more sensitively and open more quickly, reducing the vibration and impact generated during the movement, and enhancing the durability of the valve disc and the entire valve group. More importantly, the energy consumption can be reduced under the action of the first through hole 106, especially in the high-frequency reciprocating compressor 300.

[0069] As the "force transmission rod" of the valve tongue, the arm portion 1044 is usually the area where stress concentration and fatigue are prone to occur. The first through hole 106 can change the local stress field, realize the redistribution of stress, subtract part of the material through the through hole, avoid stress concentration in a certain small area, and reduce the crack initiation point.

[0070] In addition, the first through hole 106 on the arm portion 1044 is not only a structural feature, but also provides an additional channel for the refrigerant flow. During the suction process, the refrigerant can flow into the cylinder or the back of the valve disc through the through hole part, relieve the local pressure difference, help reduce the back pressure of the valve disc, lower the opening resistance, improve the flow efficiency, increase the effective flow area, reduce the vibration noise of the valve disc, and achieve a quieter operation.

[0071] Of course, the first through hole 106 makes the cross-sectional shape of this area more complex, changes the local stiffness distribution, moderately reduces the stiffness of the arm portion 1044, makes the elastic deformation characteristics of the valve tongue more suitable for the dynamic response during the suction process. Combining with the hollow design, the overall stiffness of the valve tongue is reduced, but still maintains sufficient strength, and the lift height is increased.

[0072] In some embodiments, optionally, the width of the narrow arm portion formed by the first through hole 106 provided on the arm portion 1044 is restricted such that its shortest width is greater than or equal to 0.125 times the maximum width of the arm portion 1044, so that the first through hole 106 is not too close to the boundary of the arm portion 1044, avoiding local stress concentration or crack initiation due to the proximity under impact, vibration or high stress conditions. By maintaining a certain margin, it helps to maintain the overall stiffness of the arm portion 1044 and avoid local weakening caused by the through hole being too close to the edge.

[0073] In addition, when the first through hole 106 is close to the boundary or edge, a stress concentration area is likely to form around the hole. By setting a minimum distance (i.e., 0.125 times the maximum width), it ensures that there is enough material buffer around the through hole, thereby reducing stress concentration and extending the fatigue life.

[0074] Of course, it also helps to maintain the integrity of the fluid channel of the arm portion 1044, avoid an increase in flow resistance or enhanced turbulence due to the through hole being too close to the boundary, maintain a reasonable distance, ensure smooth refrigerant flow, and reduce air flow disturbance.

[0075] In some embodiments, optionally, the local profile of the tongue portion 1046 is defined as an arc shape, and the center of the circle determines the geometric center of the arc. Sub-holes 108 are provided at both ends of the side where the root portion 1042 is connected to the valve plate body 102, and a connection line is formed between these two sub-holes 108. The position where the arm portion 1044 is connected to the root portion 1042, i.e., the arm root connection, is one of the weakest points of the valve tongue structure 104. The first through hole 106 is located on the arm portion 1044 and there is a shortest distance from the arm root connection. By proportionally limiting the shortest distance between the arm root connection and the first through hole 106 and the shortest perpendicular distance from the center of the circle of the arc-shaped profile of the tongue portion 1046 to the connection line of the sub-holes 108, it is defined that the shortest distance between the position where the arm portion 1044 is connected to the root portion 1042 and the first through hole 106 is not less than 1 / 6 of the shortest perpendicular distance between the center of the arc-shaped profile of the tongue portion 1046 and the connection line between the two sub-holes 108. The arm root connection is the stress concentration point and the potential fatigue crack initiation position of the valve tongue structure 104. Ensuring that there is enough distance between this area and the first through hole 106 can avoid a reduction in local strength due to the proximity of the through hole. By making a proportional limit based on the geometric relationship between the center of the arc of the tongue portion 1046 and the distance between the sub-holes 108, it ensures a reasonable spatial layout of the design and maintains the overall stiffness and toughness of the valve plate.

[0076] The distance between the center of the arc profile and the connection line of the sub-holes 108 reflects the geometric dimensions and structural characteristics of the tongue portion 1046. Based on this geometric feature, the shortest distance between the arm root connection and the first through hole 106 is limited to ensure the coordination of the structures of each part of the valve plate and avoid local over-weakening.

[0077] It can be understood that by maintaining a reasonable distance between the connection of the arm root and the first through hole 106, it is beneficial to the stability and flexibility of the movement of the valve tongue structure, and it can avoid the uneven stiffness caused by the too close distance between the through hole and the connection of the arm root, thereby affecting the deformation and response during the opening process of the valve disc.

[0078] In some embodiments, optionally, as Figure 1 shown, the sub-hole 108 is a hole located at both ends of the side where the root 1042 is connected to the valve disc body 102. The distance between the root 1042 and a part of the hole wall of the mounting hole 1022 is the minimum distance between the local part of the root 1042 and the hole wall of the mounting hole 1022 (i.e., the width of the gap between the root 1042 and the hole wall of the mounting hole 1022). By restricting the aperture of the sub-hole 108 to be larger than this local distance between the root 1042 and the hole wall of the mounting hole 1022, the flexibility and deformation ability of the root 1042 structure are enhanced.

[0079] Specifically, the larger aperture of the sub-hole 108 means that the openings of the sub-holes 108 at both ends of the root 1042 are wider, which helps the local elastic deformation of the root 1042.

[0080] Since the distance between the root 1042 and the hole wall of the mounting hole 1022 is relatively small, if the aperture of the sub-hole 108 is smaller than this distance, the root 1042 may be too rigid, resulting in insufficient rigidity or limited deformation during the movement of the valve tongue structure. The design of the larger aperture of the sub-hole 108 makes the root 1042 have a certain flexibility, and it can better withstand the stress and deformation in the reciprocating motion, reducing fatigue damage.

[0081] In addition, the root 1042 is a key stress-bearing part of the valve disc. The larger aperture of the sub-hole 108 makes the stress distribution more uniform, reduces the stress concentration caused by sharp edges or narrow gaps, delays the occurrence of fatigue cracks, and improves the service life of the valve disc.

[0082] In some embodiments, optionally, the local contour of the tongue portion 1046 is arc-shaped, and this local contour can be described by a virtual circle 116, that is, this local contour coincides with the corresponding virtual circle 116. The minimum distance between the first through hole 106 and the virtual circle 116 is the closest distance from the edge of the first through hole 106 to the boundary of the virtual circle 116 corresponding to this arc. The maximum distance between the arm portion 1044 and the hole wall of the mounting hole 1022 is the maximum distance between the outer wall of the arm portion 1044 and the hole wall of the mounting hole 1022, which reflects the maximum gap of the arm portion 1044 in the mounting hole 1022.

[0083] By restricting the minimum distance between the first through-hole 106 and the virtual circle 116 corresponding to the arc-shaped local contour to be less than the maximum spacing between the arm 1044 and the hole wall of the mounting hole 1022, it is ensured that the first through-hole 106 is close enough to the arc contour of the tongue 1046, but does not exceed the maximum clearance range between the arm 1044 and the mounting hole 1022. That is to say, the first through-hole 106 does not exceed the mounting hole 1022 of the arm 1044, avoiding structural conflicts. In addition, if the first through-hole 106 is too far from the virtual circle 116, it may cause the local material of the arm 1044 to be too thick and the stiffness to be too large, affecting the dynamic response of the valve plate. If the distance is too close, it may cause the local part of the arm 1044 to be too thin, prone to stress concentration or fatigue failure. It can be understood that by defining this distance to be less than the maximum spacing between the arm 1044 and the hole wall of the mounting hole 1022, the balance of stiffness and strength is achieved.

[0084] It should be emphasized that the tongue 1046 is arranged opposite to the suction hole and needs to be opened during suction and close the suction hole in other states. Therefore, the tongue 1046 needs to completely cover the suction hole to facilitate the normal operation of the compressor 300. In this solution, by restricting the minimum distance between the first through-hole 106 and the virtual circle 116 corresponding to the arc-shaped local contour to be less than the maximum spacing between the arm 1044 and the hole wall of the mounting hole 1022, the opening range of the first through-hole 106 can be restricted on the basis of ensuring the normal operation of the compressor 300.

[0085] In some embodiments, optionally, on the side of the first through-hole 106 close to the tongue 1046, the edge or contour of its hole opening is designed as an arc shape instead of a straight line or polygon, which can effectively disperse stress and prevent the hole edge from becoming the starting point of cracks.

[0086] In addition, the arc contour is easy to machine, especially through processes such as drilling, milling or laser cutting, reducing the processing difficulty and the risk of manufacturing defects such as cracks and burrs.

[0087] Of course, the arc shape helps to maintain the material continuity and strength in the hole edge area, avoiding local deformation caused by geometric discontinuity.

[0088] In some embodiments, optionally, the outer surfaces of the root 1042, the arm 1044, and the tongue 1046 are designed to be parallel to the inner surface of the mounting hole 1022 in some areas. This parallel design is local, that is, only part of the surface meets this condition, which can ensure the stable positioning of the valve plate in the mounting hole 1022. It can be understood that parallel surface contact or approximate parallel can achieve good cooperation between the valve plate and the mounting hole 1022, which is beneficial to the positioning and guiding of the valve plate in the mounting hole 1022, preventing the valve plate from shifting or shaking during operation, and improving the assembly accuracy and motion stability of the valve plate.

[0089] Of course, the design of the parallel surfaces conforms to the conventional process of machining, making it easy to control the dimensional and geometric tolerances. During assembly, the valve plate can be smoothly inserted into the mounting hole 1022, reducing the assembly difficulty, lowering the manufacturing cost, and improving the assembly efficiency.

[0090] It can be understood that the parallel surface fit ensures that the valve plate can freely lift or swing along a predetermined direction within the hole, avoiding jamming or excessive resistance, which helps the valve plate quickly respond to changes in air flow pressure and achieve an efficient suction action.

[0091] In some embodiments, optionally, the limiting valve tongue structure 104 is symmetric, that is, the shape and size of the valve tongue structure 104 are completely mirror-imaged with respect to a central symmetry line. The symmetry line passes through the center of the local arc contour of the tongue portion 1046, that is, the arc shape of the tongue portion 1046 is evenly distributed on both sides of the symmetry line, forming a complete geometric symmetry.

[0092] On this basis, the symmetric structure ensures that when the valve tongue is stressed, the force and stress are evenly distributed, and there will be no eccentric load or bending deformation due to asymmetric structure. The symmetry line passes through the center of the tongue portion 1046, further ensuring the uniform force on the arc of the tongue portion 1046, reducing stress concentration, improving the overall stiffness and durability of the valve plate, and extending the service life.

[0093] Of course, when the symmetric valve tongue structure 104 opens and closes, the movement is balanced, avoiding yaw or jamming. The center of the tongue portion 1046, as the point through which the symmetry line passes, ensures that the forces on both sides of the valve tongue are consistent, the movement trajectory is smooth, enhancing the opening sensitivity and sealing performance of the valve plate, and reducing noise and vibration.

[0094] Furthermore, in the design of a single mounting hole 1022, there is only one mounting hole 1022 on the valve plate body 102, which is used to fix and position the valve tongue structure 104. The valve tongue structure 104 is connected to the valve plate body 102 through the mounting hole 1022 to ensure the movement and positioning of the valve tongue. The second through-hole 110 is provided on the valve plate body 102 and is connected to the mounting hole 1022 to form a flow path. Specifically, the second through-hole 110 serves as an exhaust hole and is responsible for exhausting the air within the single mounting hole 1022.

[0095] Furthermore, as Figure 5 and Figure 6As shown, the number of mounting holes 1022 is two or more, and the multiple mounting holes 1022 are interconnected. Each mounting hole 1022 is equipped with a valve tongue to achieve multi-point control or multi-channel fluid regulation. The third through-hole 112 is provided between two mounting holes 1022. The third through-hole 112 serves as an exhaust hole and is located on the valve plate body 102, specifically between two mounting holes 1022, making the pressure on the valve plate more uniform during exhaust. Among them, at least two valve tongue structures 104 are symmetrically arranged about a symmetry axis 114, and this symmetry axis 114 passes through the axis of the third through-hole 112 to ensure structural and force symmetry.

[0096] The multiple mounting holes 1022 and the multiple valve tongue structures 104 disperse the load, reduce the stress concentration at a single point, make the force uniform, avoid structural deformation and fatigue damage, and improve the mechanical strength and service life of the valve plate.

[0097] Each valve tongue structure 104 corresponds to a separate mounting hole 1022, with independent and coordinated movement, avoiding interference. The symmetric valve tongue structures 104 ensure the balance of the valve plate opening and closing, reduce vibration and noise, and improve the response sensitivity and sealing performance.

[0098] It should be added that according to the number of mounting holes 1022, it can be divided into two schemes. In one scheme, a second through-hole 110 is provided on the valve plate body 102, and the second through-hole 110 is connected to the mounting hole 1022 and serves as an exhaust hole. In another scheme, a third through-hole 112 is provided on the valve plate body 102, and the third through-hole 112 is arranged between two mounting holes 1022 and serves as an exhaust hole.

[0099] As Figure 8 shown, the present application provides an embodiment of a valve plate assembly 200, including a valve plate 202 and a suction valve plate 100 provided on one side of the valve plate 202. Among them, the valve plate 202 serves as the basic structure of the valve plate assembly 200 for positioning the suction valve plate 100 and bearing the air flow pressure, while the suction valve plate 100 is installed on one side of the valve plate 202 and is responsible for controlling the suction flow rate of the refrigerant to achieve the opening and closing functions.

[0100] Since the valve plate assembly 200 includes any one of the above-mentioned suction valve plates 100, it has the beneficial effects of any one of the above-mentioned suction valve plates 100, which will not be elaborated here.

[0101] As Figure 9 shown, the present application provides an embodiment of a compressor 300 for compressing gas (such as refrigerant) to achieve refrigeration or heating functions.

[0102] Since the compressor 300 includes any one of the above-mentioned valve plate assemblies 200, it has the beneficial effects of any one of the above-mentioned valve plate assemblies 200, which will not be elaborated here.

[0103] In a specific embodiment, a high-performance hollow double-suction valve plate for a reciprocating refrigerator compressor includes a valve plate body 102, mounting holes 1022, flow holes, exhaust avoidance holes (i.e., the second through-hole 110 and the third through-hole 112), and a hollow double-suction reed. The exhaust avoidance holes are located between the two suction valve plates. The hollow double-suction reed includes two suction reeds with a hollow structure in the middle. The shape of the hollow structure (i.e., the first through-hole 106) is not limited and can be circular, triangular, or polygonal. Since the hollow double-suction valve plate for a reciprocating refrigerator compressor always keeps the suction silencer and the cylinder connected during the suction process, the refrigerant can directly flow into the cylinder through the hollow structure (i.e., the first through-hole 106), reducing the suction pressure and the pressure fluctuation in the cylinder during the suction process, reducing the suction loss, which is beneficial to improving the compressor efficiency. At the same time, the hollow structure is beneficial to reducing the stiffness of the valve plate and increasing the lift height of the valve plate during the suction process. During the opening process of the valve plate, the refrigerant can also flow into the cylinder through the suction port and the hollow structure, increasing the effective flow area and improving the suction flow rate. The hollow shape can be any specified shape (such as circular, rectangular, etc.).

[0104] As Figure 7 shown, B is the maximum distance between the center of the tongue and the hollow structure.

[0105] The distance between the hollow boundary and the valve arm edge, DR - ER ≥ 0.25DR. Wherein, DR is the distance from the edge of the arm part Figure 7 to the symmetry line of the valve tongue structure in the middle, and ER is the distance from the edge of the hollow structure Figure 7 to the symmetry line of the valve tongue structure in the middle.

[0106] The distance between the hollow boundary and the stress concentration part of the valve plate, 1 / 6A ≤ C. Wherein, A is the distance between the center of the tongue and the connection line of the two sub-holes. C is the distance from the edge of the hollow structure Figure 7 to the position with the minimum width of the valve tongue structure in the middle.

[0107] The distance between the hollow boundary and the suction port, 0 < GR - FR < HR - DR. Wherein, GR is the distance from the edge of the hollow structure Figure 7 to the center of the tongue in the middle, FR is the radius of the tongue, and HR is the distance from the mounting hole to the symmetry line.

[0108] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "plural" refers to two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0109] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as a limitation of the present invention.

[0110] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific 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.

[0111] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intake valve disc, characterized in that, Comprising: A valve disc body, on which there is provided at least one mounting hole; A valve tongue structure, the shape of the valve tongue structure being adapted to the shape of the mounting hole, the valve tongue structure including a connected root, arm and tongue, a part of the root being fixedly connected to the valve disc body, the rest of the root not contacting the hole wall of the mounting hole, and the arm not contacting the hole wall of the mounting hole, and the tongue not contacting the hole wall of the mounting hole; Wherein, the width at the position where the arm is connected to the root is the minimum width of the valve tongue structure, and the arm is provided with a first through hole; a partial contour of the tongue is arc-shaped, and sub-holes are provided at both ends of one side where the root is connected to the valve disc body, and the minimum distance between the first through hole and a virtual circle corresponding to the arc-shaped partial contour is less than the maximum distance between the arm and the hole wall of the mounting hole; the shortest distance between the position where the arm is connected to the root and the first through hole is not less than 1 / 6 of the shortest perpendicular distance between the center of the circle corresponding to the arc-shaped contour in the tongue and the connection line between the two sub-holes.

2. The suction valve sheet according to claim 1, wherein, The shortest distance between the inner surface of the first through hole and the outer wall surface of the arm is not less than 0.125 times the maximum width of the arm.

3. The suction valve plate according to claim 1, wherein, The aperture of the sub-hole is larger than the distance between a part of the root and a part of the hole wall of the mounting hole.

4. The suction valve plate according to claim 1, wherein, The contour of the first through hole on the side close to the tongue is arc-shaped.

5. The intake valve disc according to claim 1, characterized in that The outer surface of a part of the root is parallel to the inner surface of a part of the hole wall of the mounting hole; and / or The outer surface of the arm is parallel to the inner surface of a part of the hole wall of the mounting hole; and / or The outer surface of the tongue is parallel to the inner surface of a part of the hole wall of the mounting hole.

6. The suction valve plate according to any one of claims 1 to 5, characterized in that The valve tongue structure is a symmetric structure, and the symmetry axis of the valve tongue structure passes through the center of the tongue with an arc-shaped partial contour.

7. The suction valve sheet according to any one of claims 1 to 5, characterized in that, The number of the mounting holes is one, the valve tongue structure is correspondingly arranged in the mounting hole, and a second through hole is provided on the valve disc body, and the second through hole is communicated with the mounting hole.

8. The suction valve plate according to any one of claims 1 to 5, characterized in that, The number of the mounting holes is at least two, at least two mounting holes are communicated with each other, the number of the valve tongue structures is at least two, each valve tongue structure is correspondingly arranged in one mounting hole, and a third through hole is provided on the valve disc body, and the third through hole is arranged between the two mounting holes; Wherein, at least two valve tongue structures are symmetric about a symmetry axis, and the symmetry axis passes through the axis of the third through hole.

9. A valve plate assembly, characterized in that, Comprising: A valve plate; The intake valve disc according to any one of claims 1 to 8, provided on one side of the valve plate.

10. A compressor, characterized in that, Comprising: The valve disc assembly according to claim 9.

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