Suction valve plate, valve plate assembly and compressor

Abstract

The present invention relates to the technical field of compressors, and provides an intake valve plate, a valve plate assembly, and a compressor, wherein the intake valve plate comprises: a valve plate body, wherein the valve plate body is provided with at least one mounting hole; a valve tongue structure, wherein the shape of the valve tongue structure is adapted to the shape of the mounting hole, and the valve tongue structure comprises a connected root, an arm, and a tongue, wherein part of the root is fixedly connected to the valve plate body, and the remaining root does not contact the hole wall of the mounting hole, and the arm does not contact the hole wall of the mounting hole, and the tongue does not contact the hole wall of the mounting hole; wherein the width of 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. In the technical solution of the present invention, the refrigerant can flow directly into the cylinder through the first through hole, thereby reducing the fluctuation of the intake pressure and the pressure in the cylinder during the intake process, reducing the intake loss, and being beneficial to improving the efficiency of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to an air intake valve plate, a valve plate assembly and a compressor. Background Art

[0002] Currently, the suction valve plate of a compressor plays a crucial role in compressor operation, ensuring unidirectional refrigerant flow. However, in related technologies, the stiffness of the suction valve plate is relatively constant, resulting in high energy consumption during compressor operation. Summary of the Invention

[0003] The present invention aims to at least solve the technical problem in the prior art or related art that the compressor consumes a lot of energy during operation.

[0004] In view of this, the technical solution of the first aspect of the present invention provides an air intake valve plate.

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

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

[0007] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides an intake valve plate, including: a valve plate body, at least one mounting hole is provided on the valve plate body; a valve tongue structure, the shape of the valve tongue structure is adapted to the shape of the mounting hole, the valve tongue structure includes a connected root, an arm and a tongue, part of the root is fixedly connected to the valve plate body, and the rest of the root does not contact the hole wall of the mounting hole, and the arm does not contact the hole wall of the mounting hole, and the tongue does not contact the hole wall of the mounting hole; wherein, the width of 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; the local contour of the tongue is arc-shaped, and sub-holes are provided at both ends of the side where the root is connected to the valve plate body, and the minimum distance between the first through hole and the virtual circle corresponding to the arc-shaped local contour is less than the maximum spacing 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 vertical distance between the center of the circle corresponding to the arc-shaped contour in the tongue and the line connecting the two sub-holes.

[0008] The intake valve disc according to the present invention comprises a valve disc body and a valve tongue structure. The valve disc body serves as the basic structure of the entire valve disc. Mounting holes and a valve tongue structure are provided in the valve disc body to ensure sufficient strength and rigidity during operation. There are one or more mounting holes, each of which is provided with a valve tongue structure shaped to match the mounting hole. Movement of the valve tongue structure enables the valve disc to be opened and closed, regulating the flow of air.

[0009] Specifically, the valve tongue structure includes a root, an arm and a tongue connected in sequence. The root part is fixedly connected to the valve plate body to ensure the overall stability of the valve tongue. The arm is used to connect the root and the tongue to adjust the valve opening. The tongue is in direct contact with the airflow and is used to open or close the airway.

[0010] By limiting the relative positions between the various parts of the valve tongue structure and the mounting hole, specifically, the root part does not contact the wall of the mounting hole, and the other part is connected to the valve plate body, and neither the arm nor the tongue contacts the wall of the mounting hole, the valve tongue structure is allowed to move freely in the hole, reducing wear.

[0011] It should be emphasized that the dividing line between the arm and the root is the position with the smallest width, that is, the width of the position where the arm is connected to the root is the minimum width of the valve tongue structure. By setting the first through hole on the arm, the weight of the valve tongue structure can be reduced and the inertia can be reduced. At the same time, the first through hole also promotes the circulation of airflow and reduces resistance.

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

[0013] Furthermore, the arm in the valve tongue structure is the key "lever" part connecting the root and the tongue, and is responsible for transmitting force and movement. Since the arm 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 in the arm, which effectively reduces the mass of this area, reduces the overall weight and moment of inertia of the valve tongue, and reduces the inertial resistance of the valve tongue when opening and closing, making the valve plate more responsive and opening faster, reducing the vibration and impact generated during the movement, and improving the durability of the valve plate and the entire valve group. More importantly, the first through hole can reduce energy consumption, especially in high-frequency reciprocating compressors.

[0014] The arm serves as the "force transmitting rod" of the valve tongue and is usually an area prone to stress concentration and fatigue. The first through hole can change the local stress field and achieve stress redistribution. By subtracting some material through the through hole, stress concentration in a small area is avoided and the starting point of cracks is reduced.

[0015] In addition, the first through hole on the arm is not only a structural feature, but also provides an additional channel for the flow of refrigerant. During the suction process, the refrigerant can flow into the cylinder or the back of the valve plate through the through hole, alleviating the local pressure difference, helping to reduce the back pressure of the valve plate, reducing the opening resistance, improving the flow efficiency, increasing the effective flow area, reducing the vibration noise of the valve plate, and achieving 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 arm stiffness, and makes the elastic deformation characteristics of the valve tongue more suitable for the dynamic response during the intake 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] Furthermore, the local contour of the tongue is defined as an arc, with its center defining the geometric center of the arc. Sub-holes are located at both ends of the side where the root connects to the valve disc, forming a line connecting the two sub-holes. The point where the arm connects to the root, the arm-root junction, is one of the most vulnerable points in the valve tongue structure. The first through-hole is located in the arm and has a minimum distance from the arm-root junction. This is achieved by proportionally limiting the minimum distance between the arm-root junction and the first through-hole to the shortest perpendicular distance between the tongue's center and the sub-holes. The minimum distance between the arm-root junction and the first through-hole is set to no less than 1 / 6 of the shortest perpendicular distance between the center of the tongue's arc-shaped contour and the two sub-holes. The arm-root junction is a stress concentration point in the valve tongue structure and a potential fatigue crack initiation site. This area is ensured to maintain a sufficient distance from the first through-hole to avoid localized strength reduction due to the proximity of the through-holes. By using proportional constraints based on the geometric relationship between the tongue's arc center and the distance between the sub-holes, the design's spatial layout is rationalized, maintaining the overall stiffness and toughness of the valve disc.

[0018] The distance between the center of the arc contour and the line connecting the sub-holes reflects the geometric dimensions and structural characteristics of the tongue. Based on this geometric characteristic, the shortest distance between the arm root connection and the first through hole is defined to ensure the structural coordination of various parts of the valve plate and avoid local excessive weakening.

[0019] It can be understood that by maintaining a reasonable distance between the arm root connection and the first through hole, the stability and flexibility of the valve tongue structure movement are promoted, and the through hole and the arm root connection are avoided to be too close, resulting in uneven stiffness, which in turn affects the deformation and response of the valve plate during opening.

[0020] The tongue's local contour is arc-shaped and can be described by a virtual circle. This local contour coincides with the corresponding virtual circle. The minimum distance between the first through-hole and the virtual circle is the closest distance from the edge of the first through-hole to the boundary of the virtual circle corresponding to the arc. The maximum spacing between the arm and the mounting hole wall is the maximum distance between the outer wall of the arm and the mounting hole wall, reflecting the maximum clearance of the arm within the mounting hole.

[0021] By limiting 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 spacing between the arm and the wall of the mounting hole, the first through-hole is ensured to be sufficiently close to the tongue arc contour while not exceeding the maximum clearance between the arm and the mounting hole. In other words, the first through-hole does not extend beyond the mounting hole of the arm, avoiding structural conflicts. Furthermore, if the first through-hole is too far from the virtual circle, the material of the local arm may be too thick, resulting in excessive stiffness, which may affect the dynamic response of the valve disc. If the distance is too close, the arm may be too thin, which may easily cause stress concentration or fatigue failure. It can be understood that by limiting this distance to less than the maximum spacing between the arm and the wall of the mounting hole, a balance between stiffness and strength is achieved.

[0022] It's important to emphasize that the tongue is positioned opposite the intake hole and needs to be open during intake, but closed in all other situations. Therefore, the tongue needs to completely cover the intake hole to ensure normal operation of the compressor. In this solution, by limiting the minimum distance between the first through hole and the virtual circle corresponding to the arc-shaped local contour to less than the maximum distance between the arm and the wall of the mounting hole, the opening range of the first through hole can be limited while ensuring 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 of the arm is not less than 0.125 times the maximum width of the arm.

[0024] In this technical solution, the width of the narrow arm portion created by the first through-hole in the arm is limited to a minimum width greater than or equal to 0.125 times the maximum arm width. This prevents the first through-hole from being too close to the arm boundary, thus avoiding localized stress concentration or cracking caused by close proximity under impact, vibration, or high-stress conditions. Maintaining a certain margin helps maintain the overall rigidity of the arm and avoids localized weakening caused by the through-hole being too close to the edge.

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

[0026] Of course, it also helps to maintain the integrity of the fluid channel in the arm, avoid the through hole being too close to the boundary, which will lead to increased flow resistance or enhanced turbulence, maintain a reasonable distance, ensure smooth flow of refrigerant, and reduce airflow disturbances.

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

[0028] In this technical solution, the sub-holes are located at both ends of the root portion where it connects to the valve disc body. The spacing between the root portion and a portion of the mounting hole wall is the minimum distance between the root portion and the mounting hole wall (i.e., the width of the gap between the root portion and the mounting hole wall). By limiting the diameter of the sub-holes to be larger than this local spacing between the root portion and the mounting hole wall, the flexibility and deformation capacity of the root structure are enhanced.

[0029] Specifically, the larger diameter of the sub-holes means that the sub-hole openings at both ends of the root are wider, which is conducive to the local elastic deformation of the root.

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

[0031] In addition, the root is the key stress-bearing part of the valve disc. The sub-hole has a larger aperture and a more uniform stress distribution, which reduces the stress concentration caused by sharp edges or narrow gaps, delays the occurrence of fatigue cracks, and increases the service life of the valve disc.

[0032] In some technical solutions, optionally, a side of the first through hole close to the tongue portion has an arc-shaped contour.

[0033] In this technical solution, the first through hole is located on the side close to the tongue, and its hole edge or contour is designed to be an arc shape rather than 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 profile is easy to process, especially through processes such as drilling, milling or laser cutting, which reduces processing difficulty and reduces the risk of manufacturing defects such as cracks and burrs.

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

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

[0037] In this technical solution, the outer surfaces of the root, arm, and tongue are designed to be parallel to the inner surface of the mounting hole in certain 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. It can be understood that parallel surface contact 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 offsetting or shaking during operation, and improving the assembly accuracy and movement stability of the valve plate.

[0038] Of course, the design of the parallel surface conforms to the conventional machining process, which makes it easy to control the size and form and position tolerances. During assembly, the valve plate can be smoothly inserted into the mounting hole, which reduces the difficulty of assembly, reduces manufacturing costs, and improves assembly efficiency.

[0039] It can be understood that the parallel surfaces cooperate to ensure that the valve plate can rise and fall or swing freely in the predetermined direction in the hole, avoiding jamming or excessive resistance, and helping the valve plate to quickly respond to changes in airflow pressure and achieve efficient suction action.

[0040] In some technical solutions, optionally, the valve tongue structure is a symmetrical structure, and the symmetry line of the valve tongue structure passes through the center of the tongue portion whose local contour is in the shape of an arc.

[0041] In this solution, the symmetry of the valve tongue structure is limited, that is, the shape and size of the valve tongue structure are completely mirrored about a central symmetry line, and the symmetry line passes through the center of the local arc contour of the tongue, that is, the arc shape of the tongue is evenly distributed on both sides of the symmetry line, forming complete geometric symmetry.

[0042] On this basis, the symmetrical structure ensures that the force and stress of the valve tongue are evenly distributed when it is subjected to force, and no unbalanced load or bending deformation will occur due to structural asymmetry. The symmetry line passes through the center of the tongue, further ensuring that the force on the tongue arc is even, reducing stress concentration, improving the overall stiffness and durability of the valve disc, and extending its service life.

[0043] Of course, the symmetrical valve tongue structure ensures balanced movement when opening and closing, avoiding deflection or jamming. The center of the tongue serves as the passing point of the symmetry line, ensuring that the forces on both sides of the valve tongue are consistent and the movement trajectory is smooth, thereby improving the opening sensitivity and sealing performance of the valve disc and reducing noise and vibration.

[0044] In some technical solutions, optionally, the number of the mounting hole 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 connected to the mounting hole.

[0045] In this solution, a single mounting hole design is adopted, and there is only one mounting hole on the valve plate body, which is used to fix and position the valve tongue structure. The valve tongue structure is connected to the valve plate body through the mounting hole to ensure the movement and positioning of the valve tongue. The second through hole is arranged on the valve plate body and is connected to the mounting hole to form a flow path. Specifically, the second through hole serves as an exhaust hole, which is responsible for exhausting the air in the 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, the number of valve tongue structures is at least two, each valve tongue structure is correspondingly arranged in a mounting hole, a third through hole is provided on the valve plate body, and the third through hole is provided in the two mounting holes; wherein, at least two valve tongue structures are symmetrical about the axis of symmetry, and the axis of symmetry passes through the axis of the third through hole.

[0047] In this embodiment, there are two or more mounting holes, each of which is interconnected. Each mounting hole houses a valve tongue, enabling multi-point control or multi-channel fluid regulation. A third through-hole is provided between the two mounting holes. This third through-hole serves as a vent, located on the valve disc body, specifically between the two mounting holes. This provides more uniform pressure on the valve disc during venting. At least two valve tongue structures are symmetrically arranged about an axis of symmetry, which passes through the axis of the third through-hole, ensuring structural and force symmetry.

[0048] The multiple mounting holes and multiple valve tongue structures disperse the load and reduce single-point stress concentration. The symmetrically arranged valve tongue structure makes the force uniform, avoids structural deformation and fatigue damage, and improves the mechanical strength and life of the valve plate.

[0049] Each valve tongue structure corresponds to a separate mounting hole, and the movements are independent and coordinated to avoid interference. The symmetrical valve tongue structure ensures the balance of valve opening and closing, reduces vibration and noise, and improves response sensitivity and sealing performance.

[0050] It should be noted that the valve body can be divided into two schemes based on the number of mounting holes. In one scheme, the valve body is provided with a second through hole, which is connected to the mounting hole and serves as a vent. In the other scheme, the valve body is provided with a third through hole, which is located between the two mounting holes and serves as a vent.

[0051] A second aspect of the present application provides a valve plate assembly, comprising: a valve plate; and any one of the above-mentioned intake valve plates, arranged on one side of the valve plate.

[0052] The valve plate assembly provided in this application includes a valve plate and an intake valve plate arranged on one side of the valve plate, wherein the valve plate serves as the basic structure of the valve plate assembly, is used to position the intake valve plate, and withstand the airflow pressure, and the intake valve plate is installed on one side of the valve plate, and is responsible for controlling the intake flow of the refrigerant and realizing the opening and closing functions.

[0053] Since the valve plate assembly includes any of the above-mentioned intake valve plates, it has the beneficial effects of any of the above-mentioned intake valve plates, which will not be described in detail here.

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

[0055] The compressor provided in this application is used to compress gas (such as refrigerant) to achieve cooling or heating functions.

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

[0057] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 A schematic structural diagram of an air intake valve plate according to an embodiment of the present invention is shown;

[0059] Figure 2 A schematic structural diagram of an air intake valve plate according to an embodiment of the present invention is shown;

[0060] Figure 3 A schematic structural diagram of an air intake valve plate according to an embodiment of the present invention is shown;

[0061] Figure 4 A schematic structural diagram of an air intake valve plate according to an embodiment of the present invention is shown;

[0062] Figure 5 A schematic structural diagram of an air intake valve plate according to an embodiment of the present invention is shown;

[0063] Figure 6 A schematic structural diagram of an air intake valve plate according to an embodiment of the present invention is shown;

[0064] Figure 7 A schematic structural diagram of an air intake valve plate according to an embodiment of the present invention is shown;

[0065] Figure 8 A schematic structural diagram of a valve plate assembly according to an embodiment of the present invention is shown;

[0066] Figure 9 A schematic structural diagram of a compressor according to an embodiment of the present invention is shown.

[0067] in, Figures 1 to 9 The corresponding relationship between the reference numerals and component names is as follows:

[0068] 100: Inhalation valve disc; 102: Valve disc 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: Axis of symmetry; 116: Virtual circle;

[0069] 200: valve plate assembly; 202: valve plate;

[0070] 300: Compressor. DETAILED DESCRIPTION

[0071] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

[0072] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0073] Refer to the following Figures 1 to 9 Some embodiments according to the present invention are described.

[0074] like Figure 1 and Figure 2 As shown, this embodiment provides an intake valve disc 100, comprising a valve disc body 102 and a valve tongue structure 104. The valve disc body 102 serves as the basic structure of the entire valve disc. Mounting holes 1022 and the valve tongue structure 104 are provided on the valve disc body 102 to ensure sufficient strength and rigidity during operation. There are one or more mounting holes 1022, and a valve tongue structure 104 of a matching shape is disposed within each mounting hole 1022. Movement of the valve tongue structure 104 enables the valve disc to open and close, regulating the flow of air.

[0075] Specifically, the valve tongue structure 104 includes a root 1042, an arm 1044 and a tongue 1046 connected in sequence. Part of the root 1042 is fixedly connected to the valve plate body 102 to ensure the overall stability of the valve tongue. The arm 1044 is used to connect the root 1042 and the tongue 1046 to adjust the valve opening. The tongue 1046 is in direct contact with the airflow to open or close the airway.

[0076] By limiting the relative positions between the various parts of the valve tongue structure 104 and the mounting hole 1022, specifically, part of the root 1042 does not contact the wall of the mounting hole 1022, and the other part is connected to the valve plate body 102, and the arm 1044 and the tongue 1046 do not contact the wall of the mounting hole 1022, thereby allowing the valve tongue structure 104 to move freely in the hole, reducing wear.

[0077] It should be emphasized that the dividing line between the arm 1044 and the root 1042 is the position with the smallest width, that is, the width of the position where the arm 1044 is connected to the root 1042 is the minimum width of the valve tongue structure 104. By setting the first through hole 106 on the arm 1044, the weight of the valve tongue structure 104 can be reduced and the inertia can be reduced. At the same time, the first through hole 106 also promotes the circulation of airflow and reduces resistance.

[0078] The shape of the first through hole 106 can be any shape, for example Figure 1 The trapezoid shown, and Figure 3 The circle shown, Figure 4 The rectangle shown can even be Figure 6 The triangle-like shape shown.

[0079] Furthermore, the arm portion 1044 in the valve tongue structure 104 is the key "lever" portion connecting the root portion 1042 and the tongue portion 1046, and is responsible for transmitting force and movement. Since the arm portion 1044 is usually long and relatively slender, its mass has a greater impact on the inertia of the valve tongue as a whole. The first through hole 106 is opened in the arm portion 1044, which effectively reduces the mass of this area, reduces the overall weight and moment of inertia of the valve tongue, reduces the inertial resistance of the valve tongue when opening and closing, makes the valve plate more responsive and opens faster, reduces the vibration and impact generated during the movement, and improves the durability of the valve plate and the entire valve group. More importantly, the first through hole 106 can reduce energy consumption, especially in high-frequency reciprocating compressors 300.

[0080] The arm 1044 serves as the "force transmitting rod" of the valve tongue, which is usually a stress concentration and fatigue-prone area. The first through hole 106 can change the local stress field and realize stress redistribution. By subtracting part of the material through the through hole, stress concentration in a small area is avoided and the starting point of cracks is reduced.

[0081] In addition, the first through hole 106 on the arm 1044 is not only a structural feature, but also provides an additional channel for the flow of refrigerant. During the suction process, the refrigerant can flow into the cylinder or the back of the valve plate through the through hole, alleviating the local pressure difference, helping to reduce the back pressure of the valve plate, reducing the opening resistance, improving the flow efficiency, increasing the effective flow area, reducing the vibration noise of the valve plate, and achieving quieter operation.

[0082] 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 1044, and makes the elastic deformation characteristics of the valve tongue more suitable for the dynamic response during the intake process. Combined with the hollow design, the overall stiffness of the valve tongue is reduced, but still maintains sufficient strength to increase the lift height.

[0083] In some embodiments, the width of the narrow arm portion created by the first through hole 106 on the arm portion 1044 can be optionally limited to a minimum width greater than or equal to 0.125 times the maximum width of the arm portion 1044. This prevents the first through hole 106 from being too close to the edge of the arm portion 1044, thereby preventing local stress concentration or cracking caused by the proximity under impact, vibration, or high stress conditions. Maintaining a certain margin helps maintain the overall rigidity of the arm portion 1044 and avoids localized weakening caused by the through hole being too close to the edge.

[0084] In addition, when the first through hole 106 is close to a boundary or edge, a stress concentration area is easily formed around the hole. By setting a minimum distance (i.e., 0.125 times the maximum width), it is ensured that there is a sufficient material buffer zone around the through hole, thereby reducing stress concentration and extending fatigue life.

[0085] Of course, it also helps to maintain the integrity of the fluid channel of the arm 1044, avoid the through hole and the boundary being too close to each other, thereby increasing the flow resistance or enhancing the turbulence, and maintain a reasonable distance to ensure smooth flow of the refrigerant and reduce airflow disturbances.

[0086] In some embodiments, the tongue portion 1046 may optionally be defined as a partially arc-shaped contour, with the center of the arc defining the geometric center of the arc. Sub-holes 108 are provided at both ends of the side where the root portion 1042 connects to the valve disc body 102, with a line connecting the two sub-holes 108. The location where the arm portion 1044 connects to the root portion 1042, i.e., the arm-root connection, is one of the thinnest and weakest points of the valve tongue structure 104. The first through-hole 106 is located in the arm portion 1044 and is at its 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 between the center of the tongue 1046 and the sub-hole 108, the shortest distance between the location where the arm 1044 connects to the root 1042 and the first through-hole 106 is set to no less than 1 / 6 of the shortest perpendicular distance between the center of the circle corresponding to the arc-shaped contour of the tongue 1046 and the two sub-holes 108. The arm root connection is a stress concentration point and potential fatigue crack initiation location in the valve tongue structure 104. This ensures that this area maintains a sufficient distance from the first through-hole 106 to avoid local strength reduction due to the close proximity of the through-holes. By proportionally limiting the geometric relationship between the center of the tongue 1046 arc and the spacing between the sub-holes 108, the design's spatial layout is rationalized, maintaining the overall stiffness and toughness of the valve disc.

[0087] The distance between the center of the arc contour and the line connecting the sub-holes 108 reflects the geometric dimensions and structural characteristics of the tongue 1046. Based on this geometric characteristic, the shortest distance between the arm root connection and the first through hole 106 is defined to ensure structural coordination of various parts of the valve plate and avoid local excessive weakening.

[0088] It can be understood that by maintaining a reasonable distance between the arm root connection and the first through hole 106, the stability and flexibility of the valve tongue structure movement are promoted, and the through hole and the arm root connection are avoided to be too close, resulting in uneven stiffness, which in turn affects the deformation and response of the valve plate during opening.

[0089] In some embodiments, optionally, as Figure 1 As shown, sub-holes 108 are located at both ends of the side where root portion 1042 connects to valve plate body 102. The spacing between root portion 1042 and a portion of the wall of mounting hole 1022 represents the minimum distance between a portion of root portion 1042 and the wall of mounting hole 1022 (i.e., the width of the gap between root portion 1042 and the wall of mounting hole 1022). By limiting the diameter of sub-holes 108 to be larger than this local spacing between root portion 1042 and the wall of mounting hole 1022, the flexibility and deformability of the root portion 1042 structure are enhanced.

[0090] Specifically, the sub-holes 108 have larger diameters, which means that the sub-holes 108 at both ends of the root 1042 have wider openings, which facilitates the local elastic deformation of the root 1042 .

[0091] Since the distance between the root 1042 and the wall of the mounting hole 1022 is small, if the aperture of the sub-hole 108 is smaller than the distance, the root 1042 may be too rigid, resulting in insufficient rigidity of the valve tongue structure during movement, or limited deformation. The larger aperture design of the sub-hole 108 makes the root 1042 have a certain flexibility, which can better withstand the stress and deformation in the reciprocating motion and reduce fatigue damage.

[0092] In addition, the root 1042 is the key stress-bearing part of the valve disc. The sub-hole 108 has a larger aperture, and the stress distribution is more uniform, which reduces the stress concentration caused by sharp edges or narrow gaps, delays the occurrence of fatigue cracks, and increases the service life of the valve disc.

[0093] In some embodiments, the tongue portion 1046 may optionally have a local arc-shaped profile, which can be described by a virtual circle 116. This local profile 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 corresponding virtual circle 116. The maximum distance between the arm portion 1044 and the wall of the mounting hole 1022 is the maximum distance between the outer wall of the arm portion 1044 and the wall of the mounting hole 1022, reflecting the maximum clearance of the arm portion 1044 within the mounting hole 1022.

[0094] By limiting 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 wall of the mounting hole 1022, the first through-hole 106 is ensured to be sufficiently close to the arc contour of the tongue portion 1046 while not exceeding the maximum clearance between the arm 1044 and the mounting hole 1022. In other words, the first through-hole 106 does not extend beyond the mounting hole 1022 of the arm 1044, thus avoiding structural interference. Furthermore, if the first through-hole 106 is too far from the virtual circle 116, the material of the arm 1044 may be excessively thick, resulting in excessive stiffness and affecting the dynamic response of the valve disc. If the distance is too close, the arm 1044 may be excessively thin, which may lead to stress concentration or fatigue failure. It can be understood that by limiting this distance to less than the maximum spacing between the arm 1044 and the wall of the mounting hole 1022, a balance between stiffness and strength is achieved.

[0095] It should be emphasized that tongue portion 1046 is positioned opposite the intake hole and needs to be open during intake, but closed in all other states. Therefore, tongue portion 1046 needs to completely cover the intake hole to facilitate normal operation of compressor 300. In this embodiment, by limiting the minimum distance between first through hole 106 and virtual circle 116 corresponding to the arc-shaped partial contour to be less than the maximum distance between arm portion 1044 and the wall of mounting hole 1022, the opening range of first through hole 106 can be limited while ensuring normal operation of compressor 300.

[0096] In some embodiments, optionally, the opening edge or contour of the first through hole 106 on the side close to the tongue 1046 is designed to be an arc shape rather than a straight line or a polygon, which can effectively disperse stress and prevent the hole edge from becoming a crack starting point.

[0097] In addition, the arc profile is easy to process, especially through processes such as drilling, milling or laser cutting, which reduces processing difficulty and reduces the risk of manufacturing defects such as cracks and burrs.

[0098] Of course, the arc shape helps maintain the material continuity and strength of the hole edge area and avoids local deformation caused by geometric discontinuity.

[0099] In some embodiments, optionally, by designing the outer surfaces of the root 1042, the arm 1044, and the tongue 1046 to be parallel to the inner surface of the mounting hole 1022 in certain 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 parallelism can achieve a good fit 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 offsetting or shaking during operation, and improving the assembly accuracy and movement stability of the valve plate.

[0100] Of course, the design of the parallel surface conforms to the conventional machining process, and is easy to control the size and shape and position tolerances. During assembly, the valve plate can be smoothly inserted into the mounting hole 1022, which reduces the assembly difficulty, reduces the manufacturing cost, and improves the assembly efficiency.

[0101] It can be understood that the parallel surfaces cooperate to ensure that the valve plate can rise and fall or swing freely in the predetermined direction in the hole, avoiding jamming or excessive resistance, and helping the valve plate to quickly respond to changes in airflow pressure and achieve efficient suction action.

[0102] In some embodiments, optionally, the valve tongue structure 104 is limited to be symmetrical, that is, the shape and size of the valve tongue structure 104 are completely mirrored about a central symmetry line, and the symmetry line passes through the center of the local arc contour of the tongue 1046, that is, the arc shape of the tongue 1046 is evenly distributed on both sides of the symmetry line, forming complete geometric symmetry.

[0103] On this basis, the symmetrical structure ensures that when the valve tongue is subjected to force, the force and stress are evenly distributed, and no unbalanced load or bending deformation will occur due to structural asymmetry. The symmetry line passes through the center of the tongue 1046, further ensuring that the arc of the tongue 1046 is subjected to uniform force, reducing stress concentration, improving the overall stiffness and durability of the valve disc, and extending its service life.

[0104] Of course, the symmetrical valve tongue structure 104 moves in a balanced manner when opening and closing to avoid deflection or jamming. The center of the tongue 1046 serves as the point through which the symmetry line passes, ensuring that the forces on both sides of the valve tongue are consistent and the movement trajectory is smooth, thereby improving the opening sensitivity and sealing performance of the valve plate and reducing noise and vibration.

[0105] Furthermore, a single mounting hole 1022 is designed, and 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 set 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, responsible for exhausting the single mounting hole 1022.

[0106] Further, if Figure 5 and Figure 6As shown, there are two or more mounting holes 1022, and the multiple mounting holes 1022 are interconnected. Each mounting hole 1022 is equipped with a valve tongue, achieving multi-point control or multi-channel fluid regulation. The third through hole 112 is provided between the 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 the two mounting holes 1022. This provides more uniform pressure on the valve plate during exhaust. The at least two valve tongue structures 104 are symmetrically arranged about a symmetry axis 114, which passes through the axis of the third through hole 112, ensuring structural and force symmetry.

[0107] The multiple mounting holes 1022 and the multiple valve tongue structures 104 disperse the load, reduce single-point stress concentration, make the force uniform, avoid structural deformation and fatigue damage, and improve the mechanical strength and life of the valve plate.

[0108] Each valve tongue structure 104 corresponds to a separate mounting hole 1022, and the movements are independent and coordinated to avoid interference. The symmetrical valve tongue structure 104 ensures the balance of the opening and closing of the valve plate, reduces vibration and noise, and improves response sensitivity and sealing performance.

[0109] It should be noted that two solutions can be implemented based on the number of mounting holes 1022. In one solution, the valve body 102 is provided with a second through hole 110 that communicates with the mounting hole 1022 and serves as a vent. In another solution, the valve body 102 is provided with a third through hole 112 that is disposed between the two mounting holes 1022 and serves as a vent.

[0110] like Figure 8 As shown, the present application provides an embodiment of a valve plate assembly 200, including a valve plate 202 and an intake valve plate 100 arranged on one side of the valve plate 202, wherein the valve plate 202 serves as the basic structure of the valve plate assembly 200, is used to position the intake valve plate 100, and withstand the air flow pressure, and the intake valve plate 100 is installed on one side of the valve plate 202, and is responsible for controlling the intake flow of the refrigerant to realize the opening and closing functions.

[0111] Since the valve plate assembly 200 includes any of the above-mentioned intake valve plates 100 , it has the beneficial effects of any of the above-mentioned intake valve plates 100 , which will not be described in detail here.

[0112] like Figure 9 As shown, the present application provides an embodiment of a compressor 300 for compressing gas (such as refrigerant) to achieve cooling or heating functions.

[0113] Since the compressor 300 includes any of the above-mentioned valve plate assemblies 200 , it has the beneficial effects of any of the above-mentioned valve plate assemblies 200 , which will not be described in detail here.

[0114] In a specific embodiment, a high-performance hollow double-intake valve plate used in a reciprocating refrigerator compressor includes a valve plate body 102, a mounting hole 1022, a flow hole, an exhaust avoidance hole (i.e., a second through hole 110 and a third through hole 112), and a hollow double-intake reed. The exhaust avoidance hole is located between the two intake valve plates, and the hollow double intake reed includes two intake reeds with a hollow structure in the middle, wherein 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 reciprocating refrigerator compressor uses a hollow double intake valve plate to always keep the intake muffler and the cylinder connected during the intake process, the refrigerant can flow directly into the cylinder through the hollow structure (i.e., the first through hole 106), reducing the intake pressure and the pressure fluctuation in the cylinder during the intake process, reducing the intake loss, and helping to improve the efficiency of the compressor. At the same time, the hollow structure is conducive to reducing the stiffness of the valve plate and increasing the lift height of the valve plate during the intake process. During the opening of the valve plate, the refrigerant can also flow into the cylinder through the intake port and the hollow structure, increasing the effective flow area and improving the intake flow rate; the hollow shape can be any specified shape (such as circular, rectangular, etc.).

[0115] like Figure 7 As shown, B is the farthest distance between the center of the tongue and the hollow structure.

[0116] The distance between the hollow boundary and the valve arm edge is DR-ER≥0.25DR. Figure 7 The distance from the symmetry line of the valve tongue structure, ER is the edge distance of the hollow structure Figure 7 The distance between the symmetry lines of the valve tongue structure.

[0117] The distance between the hollow boundary and the stress concentration part of the valve plate is 1 / 6A≤C. Where A is the distance between the center of the tongue and the line connecting the two sub-holes. C is the distance from the edge of the hollow structure to Figure 7 The distance at which the width of the middle valve tongue structure is the smallest.

[0118] The distance between the hollow boundary and the air inlet is 0<GR-FR<HR-DR. Among them, GR is the distance between the edge of the hollow structure and the air inlet. Figure 7 The distance from the center of the tongue to the center of the circle, FR is the radius of the tongue, and HR is the distance from the mounting hole to the symmetry line.

[0119] 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 "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0120] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0121] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0122] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An air intake valve plate, characterized in that: include: A valve plate body, wherein the valve plate body is provided with at least one mounting hole; A valve tongue structure, wherein the shape of the valve tongue structure is adapted to the shape of the mounting hole, and the valve tongue structure comprises a connected root portion, an arm portion, and a tongue portion, wherein a portion of the root portion is fixedly connected to the valve plate body, and the remaining portion of the root portion does not contact the hole wall of the mounting hole, the arm portion does not contact the hole wall of the mounting hole, and the tongue portion does not contact the hole wall of the mounting hole; The width of 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; The first through hole is used to provide an additional channel for the flow of refrigerant; The local 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 the virtual circle corresponding to the arc-shaped local 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 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 portion and the line connecting the two sub-holes; The number of the mounting holes is at least two, and at least two of the mounting holes are connected. The number of the valve tongue structures is at least two, and each of the valve tongue structures is correspondingly arranged in one of the mounting holes. A third through hole is provided on the valve plate body, and the third through hole is arranged between the two mounting holes. The third through hole serves as an exhaust hole.

2. The air intake valve plate according to claim 1, characterized in that: The shortest distance between the inner surface of the first through hole and the outer wall of the arm portion is not less than 0.125 times the maximum width of the arm portion.

3. The air intake valve plate according to claim 1, characterized in that: The diameter of the sub-hole is larger than the distance between a portion of the root and a portion of the hole wall of the mounting hole.

4. The air intake valve plate according to claim 1, characterized in that: A side of the first through hole close to the tongue portion has an arc-shaped contour.

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

6. The air intake valve plate according to any one of claims 1 to 5, characterized in that: The valve tongue structure is a symmetrical structure, and the symmetry line of the valve tongue structure passes through the center of the tongue portion whose local contour is in the shape of an arc.

7. The air intake valve plate according to any one of claims 1 to 5, characterized in that: At least two of the valve tongue structures are symmetrical about an axis of symmetry, and the axis of symmetry passes through an axis of the third through hole.

8. A valve plate assembly, characterized in that: include: Valve plate; The air intake valve disc according to any one of claims 1 to 7, arranged on one side of the valve plate.

9. A compressor, characterized in that: include: The valve plate assembly according to claim 8.

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