Compressor air suction valve plate, airflow control assembly, compressor and refrigeration equipment

Abstract

The invention provides a compressor air suction valve plate, an airflow control assembly, a compressor and refrigeration equipment, and relates to the technical field of compressors. And the at least two valve flaps are arranged in the air inlet holes and cover part of the air inlet holes, the multiple valve flaps are arranged in the circumferential direction of the air inlet holes at intervals, one ends of the valve flaps are connected with the valve plate base body, the other ends of the valve flaps extend towards the centers of the air inlet holes, and the valve flaps can swing in the axial direction of the air inlet holes under the action of suction airflow so as to open or close the air inlet holes covering part of the air inlet holes. The multiple valve tongues share airflow pressure together, stress is prevented from being concentrated at one point, the risk of fatigue damage is reduced, and the service life of the valve tongues is prolonged. And meanwhile, the single-time air suction amount can be improved, and the refrigerating capacity and energy efficiency of the compressor are improved.

Description

Technical Field

[0001] This application relates to the field of compressor technology, and more specifically, to a compressor suction valve plate, an airflow control assembly, a compressor, and a refrigeration device. Background Technology

[0002] As the core power component of a refrigeration system, the compressor's performance determines the overall system's operating efficiency and reliability. Typically, the design of the suction valve plate needs to balance strength, elasticity, and dynamic response characteristics. The suction valve tongue completes its periodic bending movement through its own elastic deformation. However, traditional suction valve plate designs have significant limitations. The suction port area is often small, which directly leads to increased flow resistance during the suction phase, limiting the refrigerant flow rate per unit time. This results in a decrease in actual cooling capacity output, and to achieve the target cooling effect, the system is forced to increase its operating frequency or extend its operating time, leading to increased energy consumption.

[0003] Therefore, how to increase the refrigerant flow rate drawn in by traditional suction valve plates per unit time has become an urgent technical problem to be solved. Summary of the Invention

[0004] This application aims to at least solve the technical problem of limited refrigerant flow rate drawn in by conventional suction valves per unit time.

[0005] Therefore, the first aspect of this application provides a compressor intake valve plate.

[0006] A second aspect of this application provides an airflow control component.

[0007] A third aspect of this application provides a compressor.

[0008] The fourth aspect of this application provides a refrigeration device.

[0009] In view of this, the first aspect of this application proposes a compressor intake valve plate, comprising: a valve plate base including an intake port; at least two valve tongues disposed in the intake port and covering a portion of the intake port, the plurality of valve tongues being spaced apart along the circumferential direction of the intake port, one end of the valve tongue being connected to the valve plate base, and the other end extending toward the center of the intake port, the valve tongues being able to swing along the axial direction of the intake port under the action of the intake airflow to open or close the covered portion of the intake port.

[0010] The compressor intake valve plate provided in this application includes a valve plate base and at least two valve tongues. The valve plate base has an intake port, which is the channel through which gas flows in during the compressor's intake process. The intake port can be of any shape. The valve plate base is made of a thin metal sheet with a certain strength and elasticity to ensure structural stability under frequent airflow impacts. At least two valve tongues are provided within the intake port, and multiple valve tongues are spaced apart along the circumferential direction of the intake port, that is, arranged at intervals around the axis of the intake port, thereby partially covering the intake port with the valve tongues. One end of each valve tongue is fixedly connected to the valve plate base, and the valve tongue and the valve plate base are integrally formed. The other end of the valve tongue extends towards the center of the intake port, forming a cantilevered swing end. The compressor suction valve is mounted on the valve plate, specifically on the side of the valve plate facing the compression chamber. When air enters the compression chamber, the intake airflow passes through the intake port on the valve plate and blows towards the swinging end of the valve tongue. Under the action of the intake airflow, the airflow pressure overcomes the elastic restoring force of the valve tongue, pushing it to swing axially along the intake port, thereby opening or closing the intake port of the covered portion. The intake port and intake hole are correspondingly arranged. When gas is compressed in the compression chamber, the internal pressure of the compression chamber is greater than the external ambient pressure. The swinging end of the valve tongue abuts against the valve plate, always blocking the intake port of the valve plate, thus ensuring that the refrigerant in the compression chamber does not flow out from the intake hole. Each valve tongue promotes unidirectional airflow, preventing backflow of already drawn-in gas due to pressure changes.

[0011] Multiple valve tongues are spaced circumferentially around the intake port. Compared to a traditional single valve tongue, this distributes the total coverage area of ​​the intake port across multiple valve tongues. Each valve tongue is smaller, lighter, and has lower inertia, making it easier to swing quickly under the influence of the intake airflow, resulting in higher sensitivity. Simultaneously, multiple valve tongues share the airflow pressure, avoiding stress concentration at a single point, reducing the risk of fatigue damage, and extending the valve tongue's service life. This also increases the single intake volume, thereby improving the compressor's cooling capacity and energy efficiency. In contrast, independently positioned valve tongues are often fixed at different locations on the base, leading to uneven coverage of the intake port and instability in the intake process. This application, with multiple valve tongues evenly distributed around the same intake port and positioned within the same intake port, improves the uniformity of intake, enhances the compressor's operational stability, and provides more reliable flow control and a longer service life during the intake process.

[0012] Optionally, in some embodiments, the valve tongue includes a first valve tongue, a second valve tongue, and a third valve tongue, which are disposed in the air inlet and connected to the valve plate base respectively; the first valve tongue and the second valve tongue are symmetrically distributed with respect to the center line of the third valve tongue.

[0013] In this embodiment, the valve tongue includes a first valve tongue, a second valve tongue, and a third valve tongue, all of which are disposed within the air inlet, with one end connected to the valve plate base. The first, second, and third valve tongues are all cantilever structures, with one end fixed to the valve plate base and the other end extending towards the center of the air inlet. Normally, they rely on their own elasticity to partially cover the air inlet, preventing gas backflow. The first and second valve tongues are symmetrically distributed about the center line of the third valve tongue, meaning they are arranged in mirror images on either side of the center line of the third valve tongue. When the intake airflow acts on the valve tongues, the airflow thrust on the first and second valve tongues is similar in magnitude and symmetrical in direction, resulting in consistent swing strokes. This ensures synchronous or near-synchronous opening, reducing airflow deviation caused by one valve tongue moving first. The third valve tongue is located at the center of symmetry, balancing the movements of the first and second valve tongues. The coordinated action of these three valve tongues creates three evenly distributed flow openings when the air inlet is open. The symmetrical distribution design of the first, second, and third valve tongues makes the force and movement of each valve tongue more balanced under the action of the intake airflow, improves the opening and closing synchronization and sealing uniformity, improves the flow distribution of the intake channel, enhances the operating stability of the compressor intake valve plate, and further improves the compressor's cooling capacity and energy efficiency.

[0014] Optionally, in some embodiments, the angle between the centerline of the first valve tongue and the centerline of the second valve tongue is greater than or equal to 100° and less than or equal to 140°.

[0015] In this embodiment, the first and second valve tongues are symmetrically distributed around the centerline of the third valve tongue. That is, in the circumferential layout, the third valve tongue is at a reference position, with the first and second valve tongues distributed on either side of the reference position, forming a specific angle between them. This angle is limited to 100° to 140°. When the angle is smaller (e.g., close to 100°) or larger (e.g., close to 140°), the circumferential spacing between the first and second valve tongues is relatively compact, and the total area covered by all three is relatively large, resulting in better sealing continuity when closed, which helps reduce refrigerant leakage. Simultaneously, while retaining the synchronicity of movement and uniformity of sealing provided by the symmetrical distribution, it expands the design freedom of the circumferential layout of the valve tongues. When the angle is in the middle value, the three angles formed between the centerlines of the first, second, and third valve tongues are equal in size, and the first, second, and third valve tongues are centrally symmetrically arranged. During intake, the airflow pushes the valve tongue to form three channels with smaller differences in area and shape, resulting in a more uniform flow field and further improving operational stability and service life.

[0016] Optionally, the angle between the centerline of the first valve tongue and the centerline of the second valve tongue is greater than or equal to 110° and less than or equal to 130°.

[0017] Optionally, the angle between the centerline of the first valve tongue and the centerline of the second valve tongue is 120°.

[0018] Optionally, in some embodiments, the centerline of the third valve tongue is perpendicular to one of the contour edges of the valve plate substrate.

[0019] In this embodiment, the centerline of the third valve tongue refers to the center extension line along the length of the third valve tongue, and the center extension line is perpendicular to one of the contour edges of the valve tongue base. The position of the third valve tongue is easier to determine, and the symmetrical distribution orientation of the first and second valve tongues can also be determined accordingly. Therefore, this application provides a clear positioning reference for the valve tongue layout, improves assembly consistency and production efficiency, and ensures the uniformity of airflow distribution, opening and closing synchronization, and sealing reliability of the intake valve plate during operation.

[0020] Optionally, in some embodiments, the valve tongue includes: a tongue root portion connected to the valve plate base, the width at both ends of the tongue root portion being greater than the width of the middle region of the tongue root portion; and a tongue portion, wherein multiple tongue portions extend toward the center of the air inlet.

[0021] In this embodiment, the valve tongue includes a tongue root and a tongue portion. The tongue root is the connection between the valve tongue and the valve plate base. The width at both ends of the tongue root is greater than the width of the middle area, providing a larger contact area at the connection point. This ensures the connection strength between the valve tongue and the valve plate base, making it less prone to tearing during repeated oscillations. Simultaneously, the narrowing area in the middle reduces the bending stiffness of the tongue root during oscillation, making it easier for the valve tongue to oscillate axially around the root under the action of airflow. The tongue portion is located at the end of the tongue root extending towards the center of the air inlet. The tongue portion of each valve tongue points towards the axial direction of the air inlet, and the tongue portions are distributed circumferentially, collectively covering part of the air inlet. The tongue root's wide-at-both-ends and narrow-in-the-middle shape design improves oscillation flexibility while ensuring the connection strength with the valve plate base. Furthermore, the arrangement of multiple tongue portions extending towards the center of the air inlet ensures more even force distribution and a more regular airflow channel during opening and closing, contributing to improved response speed, sealing stability, and airflow efficiency of the compressor's suction valve plate, and extending its service life.

[0022] Optionally, in some embodiments, the air intake is formed by multiple curves, and at least a portion of the multiple valve tongues matches the edge shape of the air intake; the air intake has a centrally symmetrical structure.

[0023] In this embodiment, the air intake is formed by multiple curves, and at least a portion of the multiple valve tongues matches the edge shape of the air intake. The curves surround the air intake so that the overall contour of the air intake matches the contour of the valve tongues. When three valve tongues are provided, the air intake is formed by three curves, meaning the number of valve tongues is the same as the number of curves. Since multiple valve tongues are located within the same air intake, it means that one curve forms a slit with the edges of two adjacent valve tongues, and the three curves and three valve tongues together form three slits. Therefore, the coverage area of ​​the three valve tongues is defined by three curves, rather than using two curves for each valve tongue to match the edges on both sides separately. Based on this, the compressor suction valve plate of this application is a one-piece structure formed by laser cutting, requiring only three cuts to form an air intake that accommodates three valve tongues. Compared to the scheme of independently setting multiple valve tongues, this also reduces the reversing angle during cutting and lowers the manufacturing difficulty. By forming the air intake hole with three curves and matching at least part of the three valve tongues with the shape of the corresponding curves, the number of curves required is significantly reduced, the number of cuts is reduced, and the cutting difficulty is reduced while ensuring sealing and regular airflow channels, thereby reducing the processing cost of the compressor intake valve plate.

[0024] Optionally, the centerline of the air intake port coincides with the centerline of the third valve tongue.

[0025] Optionally, in some embodiments, the compressor intake valve plate further includes: an exhaust port disposed on the valve plate base; and a flow passage disposed on the valve plate base, wherein the flow area of ​​the flow passage is smaller than the flow area of ​​the intake port.

[0026] In this embodiment, the compressor intake valve plate also includes an exhaust port and a flow passage. The exhaust port is located on the center line of the third valve tongue and communicates with the exhaust port of the compressor exhaust valve plate. When the pressure inside the compression chamber is high, the pressure can be released to the outside through the exhaust port, exhaust port, and compressor exhaust valve plate. The function of the flow passage is to introduce gas into the compression chamber under specific operating conditions or during the transition phase of valve tongue opening and closing. The flow area of ​​the flow passage is smaller than that of the intake port. The flow area refers to the cross-sectional area calculated according to the cross section perpendicular to the fluid flow direction, preventing internal pressure fluctuations caused by excessive gas introduction. In other words, the flow passage is an auxiliary airflow channel, allowing the airflow to enter the compression chamber smoothly and improving the operating stability of the compressor.

[0027] The compressor suction valve plate also includes: a fixing part, which is provided on the valve plate base to mount the compressor suction valve plate on the valve plate, and the valve plate is provided with a mounting part; and a positioning part, which is provided on the edge of the valve plate base, and the shape of the positioning part is adapted to the shape of the mounting part.

[0028] In this embodiment, the compressor suction valve plate further includes a fixing part and a positioning part. The fixing part is disposed on the valve plate base and is used to install and fix the compressor suction valve plate onto the valve plate. The fixing part can be in the form of a through hole, a screw hole, or a welded positioning post, etc., to connect with fasteners or mating structures on the valve plate, keeping the valve plate stable during operation and preventing displacement due to airflow impact or mechanical vibration. The positioning part is disposed on the edge of the valve plate base, and its shape is adapted to the shape of the mounting part, used to quickly and accurately position the valve plate base during installation. The positioning part is a notch, and the shape of the notch is V-shaped, U-shaped, or semi-circular notch. The valve plate is provided with protrusions corresponding to the notch, so that the compressor suction valve plate can be quickly positioned when installed onto the valve plate, reducing assembly difficulty.

[0029] Based on the same technical concept, a second aspect of this application proposes an airflow control assembly, including a compressor intake valve plate as proposed in the first aspect; a compressor exhaust valve plate; and a valve plate including an intake port and an exhaust port, wherein the compressor intake valve plate and the compressor exhaust valve plate are respectively connected to both sides of the valve plate, and the number and location of the intake ports correspond to the position of the valve tongue; wherein the compressor intake valve plate is used to open or close the intake port, and the compressor exhaust valve plate is used to open or close the exhaust port.

[0030] The airflow control assembly provided in this application includes a compressor suction valve plate as proposed in the first aspect, and therefore has all the beneficial effects of a compressor suction valve plate.

[0031] Meanwhile, the airflow control assembly also includes a valve plate and a compressor exhaust valve. The valve plate is the basic carrier of the airflow control assembly, including an intake port and an exhaust port. The compressor intake valve and compressor exhaust valve are connected to opposite sides of the valve plate, separating the intake and exhaust air paths to avoid mutual interference. Specifically, the compressor intake valve is located on the side facing the crankcase, and the compressor exhaust valve is located on the side away from the crankcase. The number and location of the intake ports correspond to the position of the valve tongue. When the valve tongue swings away from the position covering the intake port, the corresponding intake port opens, and gas enters the compression chamber through the intake port. When the valve tongue returns to cover the intake port, the intake port closes, preventing gas backflow. During the compressor's exhaust stroke, the working chamber volume decreases, and the internal gas is compressed to form high pressure. The high-pressure refrigerant is ejected in a pulse form, and the exhaust port is open, allowing the refrigerant to directly enter the silencer connected to the exhaust port, avoiding strong impacts within the valve plate or sealed space, while simultaneously balancing the internal pressure of the compressor. The airflow control component enables unidirectional intake and exhaust, preventing gas backflow and backflow, ensuring stable intake direction and volumetric efficiency, while avoiding pressure loss in the compression chamber and improving the smooth operation of the compressor.

[0032] Based on the same technical concept, a third aspect of this application proposes a compressor, including an airflow control component as proposed in the second aspect.

[0033] The compressor provided according to this application includes the airflow control component as proposed in the second aspect, and therefore has all the beneficial effects of the airflow control component.

[0034] Based on the same technical concept, a fourth aspect of this application proposes a refrigeration device, including a compressor as proposed in the third aspect.

[0035] The refrigeration equipment provided according to this application includes the compressor as proposed in the third aspect, and therefore has all the beneficial effects of a compressor.

[0036] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0037] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0038] Figure 1 A schematic diagram of the compressor suction valve plate in one embodiment of this application is shown;

[0039] Figure 2 A schematic diagram of the airflow control component in one embodiment of this application is shown;

[0040] Figure 3 A schematic diagram of the airflow rate of a single valve plate in one embodiment of this application is shown;

[0041] Figure 4 A schematic diagram of the suction flow rate of the compressor suction valve plate in one embodiment of this application is shown.

[0042] in:

[0043] 100 Compressor suction valve plate, 10 Valve plate base, 11 Inlet port, 2 Valve tongue, 21 First valve tongue, 22 Second valve tongue, 23 Third valve tongue, 24 Tongue root, 25 Tongue part, 3 Exhaust port, 4 Flow hole, 5 Fixing part, 6 Positioning part, 200 Airflow control assembly, 20 Compressor exhaust valve plate, 30 Valve plate, 31 Inlet port, 32 Exhaust port. Detailed Implementation

[0044] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0046] The following reference Figures 1 to 4 This application describes a compressor suction valve plate, an airflow control assembly, a compressor, and a refrigeration device according to some embodiments thereof.

[0047] like Figure 1 As shown, an embodiment of this application provides a compressor intake valve 100, including: a valve base 10, including an intake port 11; at least two valve tongues 2, disposed in the intake port 11 and covering part of the intake port 11, the plurality of valve tongues 2 being spaced apart along the circumferential direction of the intake port 11, one end of the valve tongue 2 being connected to the valve base 10, and the other end extending toward the center of the intake port 11, the valve tongue 2 being able to swing along the axial direction of the intake port 11 under the action of the intake airflow, so as to open or close the covered part of the intake port 11.

[0048] The compressor suction valve 100 provided in this application includes a valve base 10 and at least two valve tongues 2. The valve base 10 has an air inlet 11, which is a channel for gas to flow in during the compressor's suction process. The air inlet can be of any shape. The valve base 10 is made of a thin metal sheet with a certain strength and elasticity to ensure structural stability under frequent airflow impacts. At least two valve tongues 2 are provided within the air inlet 11. Multiple valve tongues 2 are spaced apart along the circumferential direction of the air inlet 11, that is, arranged spaced around the axis of the air inlet 11, thereby partially covering the air inlet 11. One end of each valve tongue 2 is fixedly connected to the valve base 10, and the valve tongue 2 and the valve base 10 are integrally formed. The other end of the valve tongue 2 extends towards the center of the air inlet 11, forming a cantilevered swing end. The compressor suction valve plate 100 is mounted on the valve plate 30 and positioned on the side of the valve plate 30 facing the compression chamber. When air enters the compression chamber, the intake airflow blows through the intake port on the valve plate 30 towards the swing end of the valve tongue 2. Under the action of the intake airflow, the airflow pressure overcomes the elastic restoring force of the valve tongue 2, pushing the valve tongue 2 to swing along the axial direction of the intake port 11, thereby opening or closing the intake port 11 of the covered portion. The intake port and intake port 11 are correspondingly arranged. When the gas is compressed in the compression chamber, the internal pressure of the compression chamber is greater than the external ambient pressure. The swing end of the valve tongue 2 abuts against the valve plate 30, always blocking the intake port of the valve plate 30, thereby ensuring that the refrigerant in the compression chamber will not flow out from the intake port 11. Each valve tongue 2 can promote unidirectional airflow and prevent the gas that has been drawn in from flowing back due to pressure changes.

[0049] Multiple valve tongues 2 are spaced circumferentially around the intake port 11. Compared to a traditional single valve tongue, the total coverage area of ​​the intake port 11 is distributed across multiple valve tongues 2. Each valve tongue 2 is smaller, lighter, and has lower inertia, making it easier to swing quickly under the influence of the intake airflow, resulting in higher sensitivity. Simultaneously, multiple valve tongues 2 share the airflow pressure, avoiding stress concentration at a single point, reducing the risk of fatigue damage, and extending the service life of the valve tongues 2. This also increases the single intake volume, thereby improving the compressor's cooling capacity and energy efficiency. Compared to multiple valve tongues 2 being independently positioned, which are often fixed at different locations on the base, leading to uneven coverage of the intake port 11 and instability in the intake process, this application uses valve tongues 2 evenly distributed around the same intake port 11, with multiple valve tongues 2 positioned within the same intake port 11. This improves the uniformity of the intake, enhances the compressor's operational stability, and enables the compressor to achieve more reliable flow control and a longer service life during the intake process.

[0050] Alternatively, in some embodiments, such as Figure 1 As shown, the valve tongue 2 includes a first valve tongue 21, a second valve tongue 22 and a third valve tongue 23. The first valve tongue 21, the second valve tongue 22 and the third valve tongue 23 are disposed in the air inlet 11 and are respectively connected to the valve plate base 10; the first valve tongue 21 and the second valve tongue 22 are symmetrically distributed with respect to the center line of the third valve tongue 23.

[0051] In this embodiment, the valve tongue 2 includes a first valve tongue 21, a second valve tongue 22, and a third valve tongue 23. All three valve tongues are located within the air inlet 11, with one end connected to the valve plate base 10. Each valve tongue is a cantilever structure, with one end fixed to the valve plate base 10 and the other end extending towards the center of the air inlet 11. Normally, they elastically cover part of the air inlet 11, preventing gas backflow. The first valve tongue 21 and the second valve tongue 22 are symmetrically distributed about the centerline of the third valve tongue 23, meaning they are arranged in a mirror image on either side of the centerline of the third valve tongue 23. When the intake airflow acts on the valve tongue 2, the airflow thrust on the first valve tongue 21 and the second valve tongue 22 is similar in magnitude and symmetrical in direction, resulting in a consistent swing stroke. This ensures synchronous or near-synchronous opening, reducing airflow deviation caused by the first valve tongue 2 moving first on one side. The third valve tongue 23 is located at the center of symmetry and can balance the movement of the first valve tongue 21 and the second valve tongue 22. The coordinated action of the three valves creates three evenly distributed flow ports when the air intake port 11 is open. Through the symmetrical distribution design of the first valve tongue 21, the second valve tongue 22 and the third valve tongue 23, the force and movement of each valve tongue 2 under the action of the intake airflow are more balanced, improving the opening and closing synchronization and sealing uniformity, improving the flow distribution of the intake channel, improving the operating stability of the compressor intake valve plate 100, and further improving the compressor's cooling capacity and energy efficiency.

[0052] Alternatively, in some embodiments, such as Figure 1 As shown, the angle between the centerline of the first valve tongue 21 and the centerline of the second valve tongue 22 is greater than or equal to 100° and less than or equal to 140°.

[0053] In this embodiment, the first valve tongue 21 and the second valve tongue 22 are symmetrically distributed around the centerline of the third valve tongue 23. That is, in the circumferential layout, the third valve tongue 23 is at a reference position, and the first valve tongue 21 and the second valve tongue 22 are distributed on either side of the reference position, forming a specific angle between them. This angle is limited to 100° to 140°. When the angle is smaller (e.g., close to 100°) or larger (e.g., close to 140°), the circumferential spacing between the first valve tongue 21 and the second valve tongue 22 is relatively compact, and the total circumference of the air inlet 11 covered by all three is relatively large. This results in better sealing continuity when closed, which helps reduce refrigerant leakage. Simultaneously, while retaining the synchronicity of movement and uniformity of sealing brought about by the symmetrical distribution, the design freedom of the circumferential layout of the valve tongue 2 is broadened. When the included angles are at their midpoint, the three included angles formed by the centerlines of the first valve tongue 21, the second valve tongue 22, and the third valve tongue 23 are of equal size, and the first valve tongue 21, the second valve tongue 22, and the third valve tongue 23 are centrally symmetrically arranged. During intake, the airflow pushes the three channels formed by the valve tongue 2 to have smaller differences in area and shape, resulting in a more uniform flow field and further improving operational stability and service life.

[0054] Optionally, the angle between the centerline of the first valve tongue 21 and the centerline of the second valve tongue 22 is greater than or equal to 110° and less than or equal to 130°.

[0055] Optionally, the angle between the centerline of the first valve tongue 21 and the centerline of the second valve tongue 22 is equal to 120°.

[0056] Alternatively, in some embodiments, such as Figure 1 As shown, the centerline of the third valve tongue 23 is perpendicular to one of the contour edges of the valve plate base 10.

[0057] In this embodiment, the centerline of the third valve tongue 23 refers to the center extension line along the length direction of the third valve tongue 23, and the center extension line is perpendicular to one of the contour edges of the valve tongue 2 base. The position of the third valve tongue 23 is easier to determine, and the symmetrical distribution orientation of the first valve tongue 21 and the second valve tongue 22 can also be determined accordingly. Therefore, this application provides a clear positioning reference for the layout of the valve tongue 2, improves assembly consistency and production efficiency, and ensures the uniformity of airflow distribution, opening and closing synchronization, and sealing reliability of the intake valve plate during operation.

[0058] Alternatively, in some embodiments, such as Figure 1As shown, the valve tongue 2 includes: a tongue root portion 24, which is connected to the valve plate base 10, and the width of both ends of the tongue root portion 24 is greater than the width of the middle area of ​​the tongue root portion 24; and a tongue portion 25, with multiple tongue portions 25 extending toward the center of the air inlet 11.

[0059] In this embodiment, the valve tongue 2 includes a tongue root portion 24 and a tongue portion 25. The tongue root portion 24 is the connection part between the valve tongue 2 and the valve plate base 10. The width at both ends of the tongue root portion 24 is greater than the width of the middle area, providing a larger contact area at the connection, thereby ensuring the connection strength between the valve tongue 2 and the valve plate base 10 and making it less prone to tearing during repeated swinging. At the same time, the narrowing area in the middle can reduce the bending stiffness of the tongue root portion 24 during swinging, making it easier for the valve tongue 2 to swing axially around the root portion under the action of airflow. The tongue portion 25 is located at the end of the tongue root portion 24 extending towards the center of the air inlet 11. The tongue portion 25 of each valve tongue 2 points in the axial direction of the air inlet 11, and the tongue portions 25 are distributed circumferentially, collectively covering part of the air inlet 11. By using the shape design of the tongue root 24, which is wide at both ends and narrow in the middle, the connection strength with the valve plate base 10 is ensured while the swing flexibility is improved. The arrangement of multiple tongues 25 extending towards the center of the air inlet 11 makes the valve tongue 2 more evenly stressed and the airflow channel more regular during the opening and closing process. This helps to improve the response speed, sealing stability and airflow efficiency of the compressor intake valve plate 100 and extend its service life.

[0060] Alternatively, in some embodiments, such as Figure 1 As shown, the air intake 11 is formed by multiple curves, and at least a portion of the multiple valve tongues 2 matches the edge shape of the air intake 11; the air intake 11 has a centrally symmetrical structure.

[0061] In this embodiment, the air intake 11 is formed by multiple curves, and at least a portion of the multiple valve tongues 2 matches the edge shape of the air intake 11. The curve arrangement ensures that the overall contour of the air intake 11 matches the contour of the valve tongues 2. The air intake 11 has a centrally symmetrical structure, making it easier to install multiple valve tongues 2 and resulting in a more uniform intake airflow. When three valve tongues 2 are provided, the air intake 11 is formed by three curves, meaning that the number of valve tongues 2 is the same as the number of curves. Since multiple valve tongues 2 are located within the same air intake 11, it means that one curve forms a slit with the edges of two adjacent valve tongues 2, and the three curves and three valve tongues 2 together form three slits. Therefore, the coverage area of ​​the three valve tongues 2 is defined by three curves, rather than using two curves for each valve tongue 2 to match the edges on both sides separately. Based on this, the compressor intake valve plate 100 of this application is a one-piece structure formed by laser cutting. Only three cuts are needed to form the intake hole 11 that accommodates three valve tongues 2. Compared with the scheme of setting multiple valve tongues 2 independently, it also reduces the reversing angle during cutting and reduces the process difficulty. By forming the intake hole 11 by three curves and matching at least part of the three valve tongues 2 with the shape of the corresponding curves, the number of curves required is significantly reduced while ensuring sealing and regular airflow channels, reducing the number of cuts, reducing the cutting difficulty, and thus reducing the processing cost of the compressor intake valve plate 100.

[0062] Optionally, the centerline of the air intake 11 coincides with the centerline of the third valve tongue 23.

[0063] Alternatively, in some embodiments, such as Figure 1 and Figure 2 As shown, the compressor intake valve plate 100 also includes: an exhaust port 3, disposed on the valve plate base 10; and a flow passage 4, disposed on the valve plate base 10, wherein the flow area of ​​the flow passage 4 is smaller than the flow area of ​​the intake port 11.

[0064] In this embodiment, the compressor intake valve plate 100 also includes an exhaust port 3 and a flow passage 4. The exhaust port 3 is located on the center line of the third valve tongue 23 and is connected to the exhaust port 32 of the compressor exhaust valve plate 20. When the pressure inside the compression chamber is high, the pressure can be released to the outside through the exhaust port 3, the exhaust port 32, and the compressor exhaust valve plate 20. The function of the flow passage 4 is to introduce gas into the compression chamber under specific operating conditions or during the opening and closing transition of the valve tongue 2. The flow area of ​​the flow passage 4 is smaller than that of the intake port 11. The flow area refers to the flow cross-sectional area calculated according to the cross section perpendicular to the fluid flow direction, to prevent internal pressure fluctuations caused by excessive gas introduction. That is, the flow passage 4 is an auxiliary airflow channel, which allows the airflow to enter the compression chamber smoothly and improves the operating stability of the compressor.

[0065] Optionally, such as Figure 1 and Figure 2As shown, the compressor suction valve plate 100 also includes: a fixing part 5, which is provided on the valve plate base 10 to mount the compressor suction valve plate 100 on the valve plate 30, and the valve plate 30 is provided with a mounting part; and a positioning part 6, which is provided on the edge of the valve plate base 10, and the shape of the positioning part 6 is adapted to the shape of the mounting part.

[0066] In this embodiment, the compressor suction valve plate 100 further includes a fixing part 5 and a positioning part 6. The fixing part 5 is disposed on the valve plate base 10 and is used to install and fix the compressor suction valve plate 100 on the valve plate 30. The fixing part 5 can be in the form of a through hole, a screw hole, or a welded positioning post, etc., to connect with fasteners or mating structures on the valve plate 30, maintain the stability of the valve plate position during operation, and avoid displacement due to airflow impact or mechanical vibration. The positioning part 6 is disposed on the edge of the valve plate base 10. The shape of the positioning part 6 is adapted to the shape of the mounting part, and is used to quickly and accurately position the valve plate base 10 during installation. The positioning part 6 is a notch, and the shape of the notch is V-shaped, U-shaped, or semi-circular notch. The valve plate 30 is provided with a protrusion corresponding to the notch, so that the compressor suction valve plate 100 can be quickly positioned when installed on the valve plate 30, reducing assembly difficulty.

[0067] Based on the same technical concept, such as Figure 1 and Figure 2 As shown, the second aspect of this application proposes an airflow control assembly 200, including a compressor suction valve 100 as proposed in the first aspect; a compressor discharge valve 20; and a valve plate 30, including a suction port 31 and a discharge port 32. The compressor suction valve 100 and the compressor discharge valve 20 are respectively connected to both sides of the valve plate 30. The number and position of the suction ports 31 correspond to the position of the valve tongue 2. The compressor suction valve 100 is used to open or close the suction port 31, and the compressor discharge valve 20 is used to open or close the discharge port 32.

[0068] The airflow control assembly 200 provided in this application includes the compressor suction valve 100 as proposed in the first aspect, and therefore has all the beneficial effects of the compressor suction valve 100.

[0069] Meanwhile, the airflow control assembly 200 also includes a valve plate 30 and a compressor exhaust valve plate 20. The valve plate 30 is the basic carrier of the airflow control assembly 200, including an intake port 31 and an exhaust port 32. The compressor intake valve plate 100 and the compressor exhaust valve plate 20 are respectively connected to both sides of the valve plate 30, so that the intake and exhaust air paths are arranged separately on both sides of the valve plate 30 to avoid mutual interference. Specifically, the compressor intake valve plate 100 is located on the side facing the crankcase, and the compressor exhaust valve plate 20 is located on the side away from the crankcase. The number and location of the intake ports 31 correspond to the position of the valve tongue 2. When the valve tongue 2 swings away from the position covered by the intake port 11, the corresponding intake port 31 opens, and gas enters the compression chamber through the intake port 11. When the valve tongue 2 returns to cover the intake port 11, the intake port 31 closes, preventing gas backflow. During the compressor's discharge stroke, the working chamber volume decreases, and the internal gas is compressed to form high pressure. High-pressure refrigerant is ejected in a pulsed manner. The discharge port 32 is open, allowing the refrigerant to directly enter the silencer connected to the discharge port 32, preventing strong impacts within the valve plate 30 or the sealed space, and simultaneously balancing the internal pressure of the compressor. The airflow control component 200 enables unidirectional intake and exhaust, preventing gas backflow and ensuring stable intake direction and volumetric efficiency. It also avoids pressure loss in the compression chamber, improving the compressor's operational stability.

[0070] Based on the same technical concept, such as Figure 2 As shown, a third aspect of this application proposes a compressor, including an airflow control assembly 200 as proposed in the second aspect.

[0071] The compressor provided according to this application includes the airflow control component 200 as proposed in the second aspect, and therefore has all the beneficial effects of the airflow control component 200.

[0072] Based on the same technical concept, a fourth aspect of this application proposes a refrigeration device, including a compressor as proposed in the third aspect.

[0073] The refrigeration equipment provided according to this application includes the compressor as proposed in the third aspect, and therefore has all the beneficial effects of a compressor. The refrigeration equipment includes either a refrigerator or an air conditioner.

[0074] In a specific application, such as Figure 1 and Figure 2As shown, this application proposes a suction valve (compressor suction valve 100) for use in a compressor, comprising: a body (valve base 10) for connection with a valve plate 30; multiple valve tongues 2, which are connected to the body via connecting arms (tongue root 24) and serve to seal and bend; an exhaust port 3 and a flow passage 4; the heads of the multiple valve tongues 2 all point towards the center of the body; the multiple valve tongues 2 are perpendicular to the lower edge of the body; the first valve tongue 21 and the second valve tongue 22 are symmetrically distributed around the center line of the third valve tongue 23, and the first valve tongue 21 and the second valve tongue 22 are set at an angle of 50° to 60° with the left and right edges of the suction valve; and the exhaust port 3 is distributed on the center line of the third valve tongue 23.

[0075] Table 1

[0076]

[0077] At 72Hz, the cooling capacity of this application is 420.23W, an increase of 5.99W compared to the Base application's 414.24W. The maximum suction valve velocity is 3.98m / s, a decrease of 15.7% compared to the Base application's 4.72m / s; the maximum lift is 3.76mm, a decrease of 14.0% compared to the Base application's 4.37mm. At 27Hz, the indicated efficiency of this application (2.487) is almost equivalent to the Base application's 2.486, but the cooling capacity is increased by 5.52W. The maximum suction valve velocity is 2.79m / s, a decrease of 7.3% compared to the Base application's 3.01m / s; the maximum lift is 2.86mm, a decrease of 12.0% compared to the Base application's 3.25mm. In the three-valve design of this application, there are two data points: the maximum speed of the intake valve plate and the maximum lift of the intake valve plate. For example, at a frequency of 72Hz, the maximum speed of the intake valve plate of the first and second valve tongues is 3.98m / s, and the maximum lift of the intake valve plate is 3.76mm; the maximum speed of the intake valve plate of the third valve tongue is 3.37m / s, and the maximum lift of the intake valve plate is 1.88mm. Similarly, at a frequency of 27Hz, the maximum speed of the intake valve plate of the first and second valve tongues is 2.79m / s, and the maximum lift of the intake valve plate is 2.86mm; the maximum speed of the intake valve plate of the third valve tongue is 2.38m / s, and the maximum lift of the intake valve plate is 2.39mm.

[0078] like Figure 3 and Figure 4 As shown, at a frequency of 72Hz, the flow rate curve of this application is significantly improved in reducing backflow compared to the Base application. This is due to the increased stiffness caused by the short valve tongue length, which suppresses backflow.

[0079] In this application, the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0080] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above 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 one or more embodiments or examples.

[0081] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A compressor suction valve plate, characterized in that, include: Valve plate base, including air inlet; At least two valve tongues are disposed in the air inlet and cover part of the air inlet. A plurality of valve tongues are spaced apart along the circumferential direction of the air inlet. One end of the valve tongue is connected to the valve plate base, and the other end extends toward the center of the air inlet. The valve tongue can swing along the axial direction of the air inlet under the action of the intake airflow to open or close the covered part of the air inlet.

2. The compressor suction valve plate according to claim 1, characterized in that, The valve tongue includes a first valve tongue, a second valve tongue, and a third valve tongue, which are disposed in the air inlet and connected to the valve plate base respectively. The first valve tongue and the second valve tongue are symmetrically distributed about the center line of the third valve tongue.

3. The compressor suction valve plate according to claim 2, characterized in that, The angle between the centerline of the first valve tongue and the centerline of the second valve tongue is greater than or equal to 100° and less than or equal to 140°.

4. The compressor suction valve plate according to claim 2, characterized in that, The centerline of the third valve tongue is perpendicular to one of the contour edges of the valve plate substrate.

5. The compressor suction valve plate according to claim 1, characterized in that, The valve tongue includes: The base of the tongue is connected to the valve plate base, and the width at both ends of the base of the tongue is greater than the width of the middle area of ​​the base of the tongue. The tongue portion, and multiple tongue portions, extend toward the center of the air inlet.

6. The compressor suction valve plate according to claim 1, characterized in that, The air inlet is formed by multiple curves, and at least a portion of the multiple valve tongues matches the edge shape of the air inlet; The air intake has a centrally symmetrical structure.

7. The compressor suction valve plate according to any one of claims 1 to 6, characterized in that, Also includes: An exhaust port is provided on the valve plate base; An overflow hole is provided on the valve plate base, and the flow area of ​​the overflow hole is smaller than the flow area of ​​the air inlet hole.

8. An airflow control component, characterized in that, include: The compressor intake valve plate as described in any one of claims 1 to 7; Compressor exhaust valve plate; The valve plate includes an intake port and an exhaust port. The compressor intake valve plate and the compressor exhaust valve plate are respectively connected to the two sides of the valve plate. The number and position of the intake port correspond to the position of the valve tongue. The compressor intake valve is used to open or close the intake port, and the compressor exhaust valve is used to open or close the exhaust port.

9. A compressor, characterized in that, Includes the airflow control component as described in claim 8.

10. A refrigeration device, characterized in that, Includes the compressor as described in claim 9.

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