One-way valve, exhaust assembly and scroll compressor

Abstract

The utility model relates to the technical field of compressors, in particular to a one-way valve, an exhaust assembly and a scroll compressor, the one-way valve comprises a valve seat and a valve plate, the valve seat is provided with a first ventilation channel, the valve seat is provided with a placing surface on the side where the exhaust end of the first ventilation channel is located, and a supporting structure is arranged in the first ventilation channel. When the valve plate is located at the closing position, the placing face and the supporting structure are used for bearing the valve plate, and the valve plate closes the first ventilation channel. When the valve plate is in the opening position, the valve plate is far away from the placing surface and the supporting structure, and the valve plate opens the first ventilation channel. The placing surface and the supporting structure can jointly support the valve plate, the circumferential direction and the center position of the bottom wall of the valve plate can be supported, the supporting range of the valve plate is enlarged, the stress of the valve plate is more dispersed and uniform, the valve plate can be designed to be thin, and the situation that the valve plate is deformed or fractured due to stress is reduced.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a one-way valve, an exhaust assembly, and a scroll compressor. Background Technology

[0002] Scroll compressors are widely used in refrigeration, air conditioning, heat pumps and other fields. When they stop, if the refrigerant flow is not controlled, the refrigerant will flow in reverse, causing the scroll to reverse and damaging the scroll and thrust plate. Therefore, it is crucial to prevent reverse reversal by using a one-way valve.

[0003] In related technologies, the one-way valve plate of a large-horsepower compressor has a large area. During the operation of the compressor, the valve plate is subjected to a large force, and the valve plate needs a certain thickness. If the valve plate is too thick, it is easy to become a floating valve, which will aggravate noise, valve plate wear, etc. If the valve plate is made thin, the force on the valve plate will increase with the increase of area. If the valve plate is not thick enough, it is very easy to be damaged, deformed or broken. Utility Model Content

[0004] The purpose of this invention is to provide a one-way valve, an exhaust assembly, and a scroll compressor to solve the problem in related technologies where the valve plate thickness of the one-way valve is improperly designed, making it easily damaged, deformed, or broken.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] In a first aspect, this utility model provides a one-way valve, the one-way valve comprising:

[0007] A valve seat is provided with a first ventilation channel. The first ventilation channel has an air inlet end and an air outlet end that are arranged opposite to each other. The valve seat is provided with a placement surface on the side where the air outlet end of the first ventilation channel is located. A support structure is provided inside the first ventilation channel.

[0008] A valve plate having an open position and a closed position;

[0009] When the valve plate is in the closed position, the placement surface and the support structure are used to support the valve plate, and the valve plate closes the first ventilation channel;

[0010] When the valve plate is in the open position, the valve plate is away from the placement surface and the support structure, and the valve plate opens the first ventilation channel.

[0011] In one embodiment, the support structure includes one or more support plates connected to the wall of the first ventilation channel;

[0012] When there are multiple support plates, the multiple support plates are connected to each other and intersected.

[0013] In one embodiment, the top of the support structure is flush with the placement surface.

[0014] In one embodiment, the one-way valve can be mounted on an assembly having a vent and a transition chamber. The transition chamber has an inlet and an outlet disposed opposite to each other. The vent is located at the inlet of the transition chamber, and the flow area of ​​the inlet of the transition chamber is larger than the flow area of ​​the vent. The valve seat is located at the outlet of the transition chamber, and the first vent passage is connected to the outlet of the transition chamber.

[0015] In one embodiment, the flow area at the exhaust end of the transition chamber is equal to or greater than the flow area of ​​the first ventilation channel.

[0016] In one embodiment, the assembly is provided with a mounting groove, the mounting groove is located at the exhaust end of the transition cavity, and the valve seat is located within the mounting groove.

[0017] In one embodiment, the one-way valve can be mounted on the assembly, and the one-way valve further includes a valve cover, which is disposed on both sides of the valve plate, and the valve cover is disposed on the valve plate and / or the assembly. A movable chamber is provided between the valve cover and the valve plate, and the valve plate is disposed in the movable chamber.

[0018] In one embodiment, the one-way valve further includes a guide member disposed between the valve cover and the valve seat, and the guide member extends in the exhaust direction of the first venting channel. The side of the valve plate can slide along the guide member to switch between the open position and the closed position.

[0019] In one embodiment, a plurality of guides are provided, and the plurality of guides are spaced apart circumferentially on the valve plate.

[0020] In one embodiment, one of the guide and the valve plate is provided with a limiting groove, and the other is provided with a limiting protrusion, the limiting protrusion being able to extend into the limiting groove and slide along the limiting groove.

[0021] In one embodiment, the one-way valve has an exhaust path for discharging gas from the first vent passage, the exhaust path including one or any combination of a first exhaust path, a second exhaust path, a third exhaust path, a fourth exhaust path, a fifth exhaust path, and a sixth exhaust path.

[0022] The valve plate has a closing part and a second venting channel. The closing part can close the first venting channel. The second venting channel is located outside the closing part. The top of the valve cover is provided with a third venting channel. When the valve plate is in the open position, the third venting channel corresponds to and is connected to the second venting channel. The second venting channel and the third venting channel can form the first exhaust path.

[0023] A first vent hole is provided on the side wall of the valve cover. When the valve plate is in the open position, the first vent hole is connected to the movable chamber, and the movable chamber and the first vent hole can form a second exhaust path.

[0024] A second vent hole is provided on the side wall of the valve seat. When the valve plate is in the open position, the second vent hole is connected to the movable chamber, and the movable chamber and the second vent hole can form a third exhaust path.

[0025] A first venting gap is provided between the valve cover and the valve seat. When the valve plate is in the open position, the first venting gap is connected to the movable chamber, and the movable chamber and the first venting gap can form a fourth exhaust path.

[0026] The assembly is provided with an exhaust groove, which is located around the valve seat. When the valve plate is in the open position, the exhaust groove is connected to the movable chamber, and the movable chamber and the exhaust groove can form the fifth exhaust path.

[0027] There is a second venting gap between the valve cover and the assembly. When the valve plate is in the open position, the second venting gap is connected to the movable chamber, and the movable chamber and the second venting gap can form the sixth exhaust path.

[0028] In one embodiment, the valve cover is provided with a fourth venting channel, the position of which corresponds to the position of the closing part. The fourth venting channel is connected to the movable chamber, and the air intake through the fourth venting channel can exert a force on the closing part toward the supporting structure.

[0029] Secondly, this utility model provides an exhaust assembly, including an assembly and a one-way valve as described in any of the above-mentioned solutions, wherein the one-way valve is disposed on the assembly.

[0030] Thirdly, this utility model provides a scroll compressor, including the exhaust assembly in the above-mentioned scheme, wherein the assembly is a stationary scroll plate.

[0031] The beneficial effects of this utility model are as follows:

[0032] This utility model provides a one-way valve, an exhaust assembly, and a scroll compressor. The one-way valve can be installed on the assembly. When gas needs to be discharged from the assembly, the gas enters the first ventilation channel. Under the action of gas pressure, the valve plate can move away from the placement surface to open the first ventilation channel for exhaust. After exhaust, the gas pressure inside the assembly will drop significantly. Under its own weight and pressure difference, the valve plate can be supported on the placement surface and the support structure, thereby closing the first ventilation channel. The placement surface and the support structure can jointly support the bottom wall of the valve plate. The bottom wall of the valve plate can be supported both circumferentially and at its center to reduce the valve plate being damaged by excessive pressure. This reduces the design requirements for the valve plate thickness, allowing the valve plate to be designed to be thinner. Through the joint support of the placement surface and the support structure in the first ventilation channel, the support range of the valve plate is increased, making the force on the valve plate more evenly distributed and reducing the possibility of deformation or breakage of the valve plate under stress. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the one-way valve in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram showing the position of the one-way valve on the assembly in an embodiment of this utility model;

[0035] Figure 3 This is an exploded view of the one-way valve and assembly in an embodiment of this utility model;

[0036] Figure 4 This is a cross-sectional view of the one-way valve and assembly at the guide position in an embodiment of this utility model;

[0037] Figure 5 This is a cross-sectional view of the one-way valve and assembly at the third venting channel position in an embodiment of this utility model;

[0038] Figure 6 This is a schematic diagram showing the position of the ventilation gap in an embodiment of this utility model;

[0039] Figure 7 This is a top view of the assembly in an embodiment of the present utility model;

[0040] Figure 8 This is a schematic diagram of the valve seat being installed on the assembly in an embodiment of this utility model.

[0041] In the picture:

[0042] 1. Valve seat; 11. First venting channel; 12. Placement surface; 13. Support structure; 131. Support plate;

[0043] 2. Valve plate; 21. Limiting protrusion; 22. Closure part; 23. Second venting channel;

[0044] 3. Valve cover; 31. Third vent passage; 32. Fourth vent passage;

[0045] 4. Movable chamber;

[0046] 5. Guide component; 51. Limiting groove;

[0047] 6. Assembly parts; 61. Vent; 62. Transition cavity; 63. Mounting slot; 64. Exhaust slot. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0049] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0052] like Figures 1 to 3As shown, an embodiment of the first aspect of this utility model provides a one-way valve, which includes a valve seat 1 and a valve plate 2. The valve seat 1 is provided with a first ventilation channel 11, which has an inlet end and an outlet end arranged opposite to each other. The valve seat 1 is provided with a placement surface 12 on the side where the outlet end of the first ventilation channel 11 is located, and a support structure 13 is provided inside the first ventilation channel 11.

[0053] The valve plate 2 has an open position and a closed position. When the valve plate 2 is in the closed position, the placement surface 12 and the support structure 13 support the valve plate 2, and the valve plate 2 closes the first venting channel 11. When the valve plate 2 is in the open position, the valve plate 2 moves away from the placement surface 12 and the support structure 13, and the valve plate 2 opens the first venting channel 11.

[0054] The first ventilation channel 11 refers to the ventilation channel connecting the top and bottom sides of the valve seat 1. The cross-sectional shape of the first ventilation channel 11 may be, but is not limited to, circular or polygonal. The first ventilation channel 11 may be, but is not limited to, a straight channel or a curved channel.

[0055] The placement surface 12 refers to the surface on the valve seat 1 used to place the valve plate 2. The placement surface 12 can be a flat surface or a curved surface, as long as it can fit against the bottom of the valve plate 2 to close and seal the first ventilation channel 11.

[0056] The placement surface 12 and the support structure 13 are used to support the valve disc 2. When the valve disc 2 is placed on the valve seat 1, the placement surface 12 and the support structure 13 can jointly support the bottom wall of the valve disc 2. The bottom wall of the valve disc 2 is supported both circumferentially and at its center, thus reducing the risk of damage to the valve disc 2 due to excessive pressure. It should be noted that the support structure 13 can be flush with the placement surface 12, supporting the valve disc 2 simultaneously. Alternatively, there can be a slight height difference between the support structure 13 and the placement surface 12, allowing the support structure 13 to support the placement surface 12 sequentially. For example, the height of the support structure 13 can be slightly lower than the placement surface 12. When the valve disc 2 is closed under less force, the valve disc 2 can first adhere to the placement surface 12. A slight air gap between the support structure 13 and the valve disc 2 increases the interaction area between the gas and the valve disc 2 when the valve disc 2 is opened, enabling the valve disc 2 to open quickly and with high sensitivity. When the valve plate 2 is closed and the force increases, causing a slight elastic deformation, both the placement surface 12 and the support structure 13 can support the valve plate 2, preventing excessive deformation and damage. The top of the support structure 13 and the placement surface 12 can be combined to form a plane or a smooth curved surface, or they can form a stepped surface or other irregularly shaped surface. The shapes of the placement surface 12 and the support structure 13 should be adapted to the shape of the valve plate 2 to support it.

[0057] When valve plate 2 closes the first ventilation channel 11, it means that when valve plate 2 is subjected to the force of airflow towards the placement surface 12, valve plate 2 can abut against the placement surface 12 and the support structure 13, thereby closing and sealing the first ventilation channel 11, and the first ventilation channel 11 no longer exhausts air.

[0058] When the valve plate 2 opens the first ventilation channel 11, it means that when the valve plate 2 is subjected to a force on the side away from the placement surface 12, it can overcome its own weight and move away from the placement surface 12 and the support structure 13, thereby opening the first ventilation channel 11, which can exhaust gas towards the valve plate 2.

[0059] The valve plate 2 being away from the placement surface 12 and the support structure 13 means that the valve plate 2 can move relative to the valve seat 1. The movement of the valve plate 2 relative to the valve seat 1 can be, but is not limited to, flipping, swinging, or sliding up and down. The direction in which the valve plate 2 is away from the placement surface 12 and the support structure 13 can be, but is not limited to, the exhaust direction of the first venting channel 11, or an oblique direction intersecting the exhaust direction of the first venting channel 11, as long as it can open or close the first venting channel 11.

[0060] With this configuration, a one-way valve can be installed on the assembly 6. When the gas in the assembly 6 needs to be discharged, the gas enters the first ventilation channel 11. Under the action of gas pressure, the valve plate 2 can move away from the placement surface 12 to open the first ventilation channel 11 for exhaust. After the exhaust is completed, the air pressure inside the assembly 6 will decrease significantly. Under its own weight and pressure difference, the valve plate 2 can abut against the placement surface 12 and the support structure 13, thereby closing and sealing the first ventilation channel 11. The placement surface 12 and the support structure 13 can jointly support the bottom wall of the valve plate 2. The bottom wall of the valve plate 2 can be supported in both the circumferential and central positions to reduce the valve plate 2 from being damaged by excessive pressure. This reduces the design requirements for the thickness of the valve plate 2, allowing the valve plate 2 to be designed to be thinner. Through the joint support of the placement surface 12 and the support structure 13 in the first ventilation channel 11, the support range of the valve plate 2 is increased, making the force on the valve plate 2 more evenly distributed. This reduces the possibility of deformation or breakage of the valve plate 2 under stress and avoids the noise and increased wear caused by an excessively thick valve plate 2. This solves the problem of improper design of the valve plate 2 thickness in the one-way valve in related technologies, which makes it easy to be damaged, deformed or broken.

[0061] like Figures 1 to 3 As shown, in some embodiments, the support structure 13 includes one or more support plates 131, which are connected to the wall of the first ventilation channel 11. That is, the support plate 131 can extend along the airflow direction of the first ventilation channel 11. By connecting with the wall of the first ventilation channel 11, the support plate 131 can be stably mounted in the first ventilation channel 11.

[0062] When there are multiple support plates 131, the multiple support plates 131 are interconnected and intersecting to form multi-point support. Furthermore, the multiple support plates 131, through their intersecting connections, can also form structural supports with each other, improving the overall structural stability of the support structure 13 and enabling it to withstand greater forces. Moreover, when there are multiple support plates 131, each support plate 131 can be designed with a thinner dimension, increasing the support range while reducing the throttling of gas at the first ventilation channel 11, thus allowing for smoother gas flow.

[0063] Optionally, the support plate 131 can be a straight plate or an arc plate, etc. The cross-sectional shape formed by connecting multiple support plates 131 can be, but is not limited to, a cross, a star, an X, a Y, a V, or a W, as long as it can support the valve plate 2 at the first ventilation channel 11.

[0064] For example, two support plates 131 can be provided, and the two support plates 131 are arranged in a cross shape. The side wall of each support plate 131 is connected to the wall of the first ventilation channel 11. The two support plates 131 can be arranged at 90° to each other, which can distribute the force of the valve plate 2 to the two support plates 131. The two support plates 131 can increase the design thickness, and the number of support plates 131 is small, which can reduce the impact on the flow area of ​​the first ventilation channel 11, and take into account both the support performance of the support structure 13 and the flow performance of the first ventilation channel 11.

[0065] like Figures 1 to 3 As shown, in some embodiments, the top of the support structure 13 is flush with the placement surface 12 so that the bottom of the valve plate 2 can be designed as a flat or smooth curved surface, avoiding the formation of a stepped structure between the support structure 13 and the placement surface 12, reducing the alignment and insertion operation between the valve plate 2 and the support structure 13, making the force on the valve plate 2 on the placement surface 12 and the support structure 13 and at the joint position of the placement surface 12 and the support structure 13 more uniform, and reducing damage caused by uneven force on the valve plate 2.

[0066] like Figures 3 to 7As shown, in some embodiments, a one-way valve can be installed on the assembly 6. The assembly 6 is provided with a vent 61 and a transition cavity 62. The transition cavity 62 has an inlet end and an outlet end arranged opposite to each other. The vent 61 is located at the inlet end of the transition cavity 62. The flow area of ​​the inlet end of the transition cavity 62 is larger than that of the vent 61. The valve seat 1 is located at the outlet end of the transition cavity 62, and the first venting channel 11 is connected to the outlet end of the transition cavity 62. With this arrangement, the gas discharged from the vent 61 on the assembly 6 can first enter the transition cavity 62 through the inlet end of the transition cavity 62. Compared with the vent 61 directly connecting to the first venting channel 11, the transition cavity 62 can form an expansion space below the first venting channel 11, increasing the gas flow rate and reducing the throttling effect of the support structure 13 on the overall gas path of the first venting channel 11 and the transition cavity 62. This ensures the overall gas flow rate of the overall gas path of the first venting channel 11 and the transition cavity 62, and improves or even eliminates the throttling effect of the one-way valve on the gas.

[0067] It should be noted that, taking a scroll compressor as an example, assembly 6 can be a stationary scroll plate. The flow area of ​​the vent 61 of the stationary scroll plate needs to match the compressor's working principle and performance requirements. For example, the size of the vent 61 affects the volume change of the compression chamber and the gas flow characteristics. Increasing or decreasing the size of the vent 61 may lead to over-compression or under-compression, thereby increasing power consumption. The flow area of ​​the vent 61 affects the gas flow characteristics. Decreasing the size of the vent 61 may increase gas flow resistance and reduce compression efficiency. Increasing the size of the vent 61 may cause gas leakage, affecting the compressor's sealing and efficiency. The design of the vent 61 also needs to ensure a smooth exhaust process and avoid vibration and noise caused by uneven exhaust. Therefore, this embodiment mainly reduces the throttling effect of the support structure 13 on the overall gas path of the first vent 11 and the transition cavity 62 by designing the transition cavity 62 without changing the flow area of ​​the vent 61. This ensures the overall gas flow of the overall gas path of the first vent 11 and the transition cavity 62, and improves or even eliminates the throttling effect of the one-way valve on the gas.

[0068] Optionally, the assembly 6 may include a housing and a telescopic tube. The telescopic tube may be installed on the housing. One end of the telescopic tube is connected to the vent 61, and the other end is connected to the first venting channel 11. The inner cavity of the telescopic tube can form a transition cavity 62. The assembly 6 may be equipped with a driving component such as a motor, cylinder, or hydraulic cylinder. The driving component is connected to the telescopic tube for transmission, which can drive the telescopic tube to extend or shorten, thereby adjusting the effective height of the transition cavity 62 and thus coping with higher or lower vortex displacement as needed.

[0069] In some embodiments, the flow area of ​​the exhaust end of the transition cavity 62 is equal to or greater than the flow area of ​​the first ventilation channel 11. When the flow area of ​​the exhaust end of the transition cavity 62 is less than the flow area of ​​the first ventilation channel 11, the transition cavity 62 can also form a certain expansion effect because the flow area of ​​the inlet end of the transition cavity 62 is greater than the flow area of ​​the vent 61, which can increase the gas flow rate to a certain extent. When the flow area of ​​the exhaust end of the transition cavity 62 is equal to or greater than the flow area of ​​the first ventilation channel 11, the transition cavity 62 can form a better transition expansion effect, further increase the gas flow rate, reduce the throttling effect of the support structure 13 on the overall gas path of the first ventilation channel 11 and the transition cavity 62, and better ensure the overall gas flow rate of the overall gas path of the first ventilation channel 11 and the transition cavity 62.

[0070] like Figures 3 to 5 As shown, in some embodiments, the assembly 6 is provided with an installation groove 63, which is located at the exhaust end of the transition chamber 62. The valve seat 1 is located in the installation groove 63, that is, the valve seat 1 can be built into the assembly 6. This not only improves the connection stability between the valve seat 1 and the assembly 6, but also allows the assembly 6 to shield and protect the valve seat 1. Moreover, the valve seat 1 can be designed as a flat plate, and the installation groove 63 can be directly used as the movable chamber 4 for the valve seat 1 to be installed and move with the valve plate 2, thus reducing the overall volume of the one-way valve.

[0071] like Figures 1 to 3 As shown, in some embodiments, the valve seat 1 can be mounted on the assembly 6. The one-way valve also includes a valve cover 3, which is disposed on both sides of the valve plate 2, with the valve cover 3 mounted on the valve seat 1 and / or the assembly 6. The valve cover 3 can be mounted on or directly connected to the valve seat 1, or it can also be mounted on or connected to the assembly 6, or it can be mounted on or connected to both the valve seat 1 and the assembly 6, and supported and positioned by both the valve seat 1 and the assembly 6. There is a movable chamber 4 between the valve cover 3 and the valve seat 1, and the valve plate 2 is disposed in the movable chamber 4. With this arrangement, the valve seat 1 can be disposed on one side of the valve plate 2 to limit and support one side of the valve plate 2 during its movement, and the valve cover 3 can be disposed on the other side of the valve plate 2 to limit and support the other side of the valve plate 2 during its movement. This allows the valve plate 2 to move within the movable chamber 4, opening or closing the first venting channel 11 and ensuring the stability of the valve plate 2's movement.

[0072] The valve cover 3 and valve seat 1 can be, but are not limited to, plate-like or shell-like structures, and can be respectively positioned on both sides of the valve plate 2 for support and positioning. When the valve cover 3 is mounted on the valve seat 1, the connection between the valve seat 1 and the valve cover 3 can be detachable. For example, the connection between the valve cover 3 and the valve seat 1 includes one or more of the following: bolt connection, snap-fit ​​connection, magnetic connection, or adhesive connection, which facilitates disassembly, assembly, and maintenance. Optionally, the valve cover 3 and the valve seat 1 can be bolted together, with the tail of the bolt passing through the valve cover 3 and threadedly connected to the valve seat 1, thereby pressing and fastening the valve cover 3 onto the valve seat 1 or the assembly 6, thus keeping the valve cover 3 and the valve seat 1 in a fixed position.

[0073] like Figures 3 to 5 As shown, the one-way valve also includes a guide 5, which is disposed between the valve cover 3 and the valve seat 1. The guide 5 extends in the exhaust direction of the first venting channel 11. The side of the valve plate 2 can slide along the guide 5 to switch between the open and closed positions. With this configuration, the guide 5 can slide and guide the valve plate 2 in the exhaust direction of the first venting channel 11. When the valve plate 2 needs to switch from the open position to the closed position, the valve plate 2 slides along the guide 5 closer to the first venting channel 11 on the valve seat 1. When the valve plate 2 needs to switch from the closed position to the open position, the valve plate 2 slides along the guide 5 away from the first venting channel 11 on the valve seat 1, reducing the movement offset of the valve plate 2. The opening and closing action of the valve plate 2 is more stable and accurate.

[0074] Optionally, the guide 5 can be an independent component, or the guide 5 can be fixedly mounted on the valve seat 1, or the guide 5 can be fixedly mounted on the valve cover 3, as long as it can guide the valve plate 2.

[0075] like Figures 3 to 5 As shown, in some embodiments, multiple guide members 5 are provided, and the multiple guide members 5 are arranged at intervals in the circumference of the valve plate 2. The multiple guide members 5 can limit and guide the valve plate 2 at multiple points, improve the stability of the valve plate 2 movement, and reduce the deviation.

[0076] For example, two guide members 5 can be provided. The two guide members 5 can be symmetrically arranged around the valve plate 2, and can be respectively arranged on both sides of the center of the valve plate 2. While realizing multi-point limiting and guiding, the friction between the valve plate 2 and the guide members 5 is reduced. Moreover, the symmetrical arrangement of the two guide members 5 can make the valve plate 2 more evenly stressed.

[0077] Optionally, the guide member 5 can be a block boss structure, which can be set on the valve seat 1. The joint between the block boss structure and the valve seat 1 can be integrally formed, which can increase the overall structural strength of the block boss structure and the valve seat 1.

[0078] Alternatively, in some other embodiments, a single guide member 5 may be provided. The guide member 5 is an annular platform structure, which is disposed around the circumference of the valve plate 2. That is, the annular strip structure can be a continuous ring, which can surround the circumference of the valve plate 2 to form a movable chamber 4, thereby providing more uniform and stable circumferential positioning of the valve plate 2. If there is a need for ventilation on the guide member 5, a corresponding ventilation channel can also be provided.

[0079] like Figures 1 to 3 As shown, in some embodiments, one of the guide member 5 and the valve plate 2 is provided with a limiting groove 51, and the other is provided with a limiting protrusion 21. The limiting protrusion 21 can extend into the limiting groove 51 for circumferential limiting and can slide along the limiting groove 51. When the valve plate 2 moves relative to the guide member 5, the limiting protrusion 21 can slide in the limiting groove 51. The limiting protrusion 21 fits against the side wall of the limiting groove 51, reducing the circumferential rotation of the valve plate 2.

[0080] Optionally, a limiting groove 51 may be provided on the guide member 5, and a limiting protrusion 21 may be provided on the valve plate 2. The limiting protrusion 21 extends into the limiting groove 51 for sliding connection. The limiting groove 51 may be a vertically arranged strip groove. The limiting protrusion 21 extends radially outward on the side wall of the valve plate 2. The joint between the limiting protrusion 21 and the valve plate 2 is integrally formed. The limiting protrusion 21 on the valve plate 2 can improve the overall structural strength of the valve plate 2 and reduce damage to the structure of the valve plate 2. The limiting groove 51 may extend from the end of the guide member 5 near the placement surface 12 to the end of the guide member 5 near the valve cover 3, and a relatively long guiding distance may be provided.

[0081] Optionally, a limiting protrusion 21 may be provided on the guide member 5, and a limiting groove 51 may be provided on the valve plate 2. The limiting protrusion 21 may be a vertically arranged strip protrusion, and the limiting groove 51 may be an opening groove opened on the side wall of the valve plate 2. The limiting protrusion 21 may be provided on the inner wall of the guide member 5, which reduces the design requirements for the thickness of the guide member 5 and reduces the overall volume of the valve seat 1.

[0082] In some embodiments, the one-way valve has an exhaust path for discharging gas from the first vent passage 11. The exhaust path includes one or any combination of a first exhaust path, a second exhaust path, a third exhaust path, a fourth exhaust path, a fifth exhaust path, and a sixth exhaust path.

[0083] The valve plate 2 has a closing part 22 and a second venting channel 23. The closing part 22 can close the first venting channel 11. The second venting channel 23 is located on the outside of the closing part 22. The top of the valve cover 3 is provided with a third venting channel 31. When the valve plate 2 is in the open position, the third venting channel 31 corresponds to and is connected to the second venting channel 23. The second venting channel 23 and the third venting channel 31 can form a first exhaust path, that is, the gas discharged from the exhaust end of the first venting channel 11 can be discharged to the outside through the second venting channel 23 and the third venting channel 31 in sequence.

[0084] A first vent hole is provided on the side wall of the valve cover 3. When the valve plate 2 is in the open position, the first vent hole is connected to the movable chamber 4. The movable chamber 4 and the first vent hole can form a second exhaust path. That is, when the valve plate 2 is open, the gas discharged from the exhaust end of the first vent channel 11 can be discharged to the outside through the movable chamber 4 and the first vent hole in sequence.

[0085] A second vent hole is provided on the side wall of the valve seat 1. When the valve plate 2 is in the open position, the second vent hole is connected to the movable chamber 4. The movable chamber 4 and the second vent hole can form a third exhaust path. That is, when the valve plate 2 is open, the gas discharged from the exhaust end of the first vent channel 11 can be discharged to the outside through the movable chamber 4 and the second vent hole in sequence.

[0086] A first venting gap is provided between the valve cover 3 and the valve seat 1. When the valve plate 2 is in the open position, the first venting gap is connected to the movable chamber 4. The movable chamber 4 and the first venting gap can form a fourth exhaust path. That is, when the valve plate 2 is open, the gas discharged from the exhaust end of the first venting channel 11 can be discharged to the outside through the movable chamber 4 and the first venting gap in sequence.

[0087] The assembly 6 is provided with an exhaust groove 64, which is located around the valve seat 1. When the valve plate 2 is in the open position, the exhaust groove 64 is connected to the movable chamber 4. The movable chamber 4 and the exhaust groove 64 can form a fifth exhaust path. That is, when the valve plate 2 is open, the gas discharged from the exhaust end of the first venting channel 11 can be discharged to the outside through the movable chamber 4 and the exhaust groove 64 in sequence. The fifth exhaust path can be combined with one or more of the second, third, and fourth exhaust paths. That is, the exhaust groove 64 can be connected to the movable chamber 4 through the first vent, the second vent, and the first vent gap. Of course, the fifth exhaust path can also exhaust independently, as long as the exhaust groove 64 is connected to the movable chamber 4 through pipelines or other means.

[0088] There is a second vent gap H between the valve cover 3 and the assembly 6. When the valve plate 2 is in the open position, the second vent gap H is connected to the movable chamber 4. The movable chamber 4 and the second vent gap H can form a sixth exhaust path. That is, when the valve plate 2 is open, the gas discharged from the exhaust end of the first vent channel 11 can be discharged to the outside through the movable chamber 4 and the second vent gap H in sequence. Similarly, the sixth exhaust path can be combined with one or more of the second, third and fourth exhaust paths. That is, the second vent gap H can be connected to the movable chamber 4 through the first vent hole, the second vent hole and the first vent gap. Of course, the sixth exhaust path can also exhaust independently. It is sufficient to ensure that the exhaust groove 64 is connected to the movable chamber 4 through pipelines or other means.

[0089] With this configuration, when valve plate 2 is in the open position, the first venting channel 11 can vent through one or any combination of the first, second, third, fourth, fifth, and sixth venting paths. This increases the adjustment range of the overall venting area of ​​the one-way valve, and the multiple venting paths are set more flexibly. It also reduces the mutual constraints in the flow area design between the first venting channel 11, the second venting channel 23, and the third venting channel 31. The venting area can be supplemented by multiple venting paths, reducing throttling.

[0090] For example, if only the first exhaust path is provided, when the ventilation area of ​​the vent 61 needs to be increased, the first ventilation channel 11 on the valve seat 1 and the closing part 22 on the valve plate 2 must be enlarged, and the areas of the second ventilation channel 23 on the valve plate 2 and the third ventilation channel 31 on the valve cover 3 will be correspondingly reduced, thus causing a throttling phenomenon. In this embodiment, by providing the second, third, fourth, fifth, and sixth exhaust paths, the effective exhaust flow area can be increased, reducing the throttling phenomenon caused by the reduction in the area of ​​the second ventilation channel 23 and the third ventilation channel 31. It also avoids the situation where the flow area of ​​the valve cover 3 and the valve plate 2 needs to be increased to reduce throttling, thus reducing the overall space occupied by the check valve. When the second, third, fourth, fifth, and sixth exhaust paths can meet the exhaust requirements of the check valve, the first exhaust path may not be provided.

[0091] Optionally, the height of the valve seat 1 is higher than the depth of the mounting groove 63. The valve seat 1 separates the valve cover 3 from the surface of the assembly 6. The side wall of the valve seat 1 is open, and a second venting gap H can be formed between the bottom wall of the valve cover 3 and the surface of the assembly 6.

[0092] Optionally, the assembly 6 may be, but is not limited to, a housing or cover structure. The assembly 6 may be a static scroll or other parts such as a silencer cover.

[0093] Optionally, the areas of the first ventilation channel 11, the second ventilation channel 23, and the third ventilation channel 31 are larger than the exhaust area of ​​the vent 61. The gas flow area can be increased or decreased by adjusting the dimensions of the first ventilation channel 11, the second ventilation channel 23, and the third ventilation channel 31.

[0094] Optionally, the third venting channel 31 is positioned corresponding to the second venting channel 23 on the valve plate 2. The third venting channel 31 and the second venting channel 23 have the same shape, and the size of the third venting channel 31 is equal to or smaller than the size of the second venting channel 23, so that the valve cover 3 can cover the valve plate 2, and the airflow between the third venting channel 31 and the second venting channel 23 is smooth.

[0095] Optionally, both the closing part 22 and the first venting channel 11 can be circular structures. The closing part 22 is the area on the valve plate 2 responsible for closing the first venting channel 11. The second venting channel 23 is opened on the valve plate 2 and surrounds the circumference of the closing part 22. The second venting channel 23 can be a side opening groove provided on the side wall of the valve plate 2, or it can be a multi-segment arc-shaped hole provided on the valve plate 2.

[0096] In some embodiments, a fourth venting channel 32 is provided on the valve cover 3. The position of the fourth venting channel 32 corresponds to the position of the closing part 22. The fourth venting channel 32 is connected to the movable chamber 4. The air intake of the fourth venting channel 32 can exert a force on the closing part 22 toward the placement surface 12. That is, after the exhaust is completed, the air pressure in the assembly 6 decreases, and the valve plate 2 falls under its own weight and pressure difference. The fourth venting channel 32 can return the intake air. The airflow of the fourth venting channel 32 can exert a force on the closing part 22 toward the placement surface 12 to push the valve plate 2 as a whole toward the valve seat 1. The closing part 22 of the valve plate 2 closes and abuts against the first venting channel 11.

[0097] In this embodiment, the fourth venting channel 32 may include one or more through holes, the size and position of which can be preset according to the sensitivity required for the valve plate 2 to close the first venting channel 11. For example, the fourth venting channel 32 may be provided with one through hole, which may be positioned corresponding to the middle position of the closing portion 22 of the valve plate 2.

[0098] like Figures 3 to 8As shown, an embodiment of the second aspect of this utility model provides an exhaust assembly, including a fitting 6 and a one-way valve as described in any of the above embodiments. When the gas in the fitting 6 needs to be discharged, the gas enters the first ventilation channel 11, and the valve plate 2 can move away from the placement surface 12 under the action of gas pressure to open the first ventilation channel 11 and discharge the gas. After exhaust is completed, the air pressure inside the assembly 6 will decrease significantly. Under its own weight and pressure difference, the valve plate 2 can abut against the placement surface 12 and the support structure 13, thereby closing and sealing the first ventilation channel 11. The placement surface 12 and the support structure 13 can jointly support the bottom wall of the valve plate 2. The bottom wall of the valve plate 2 can be supported in both the circumferential and central positions to reduce the valve plate 2 from being damaged by excessive pressure. This reduces the design requirements for the thickness of the valve plate 2, allowing the valve plate 2 to be designed to be thinner. Through the joint support of the placement surface 12 and the support structure 13 in the first ventilation channel 11, the support range of the valve plate 2 is increased, making the force on the valve plate 2 more evenly distributed. This reduces the possibility of deformation or breakage of the valve plate 2 under stress, and also avoids the noise and increased wear caused by an excessively thick valve plate 2. This ensures the stability of the exhaust assembly's exhaust operation and unidirectional anti-reverse airflow.

[0099] Because it includes the one-way valve described above, the exhaust assembly of this utility model embodiment has all the advantages and beneficial effects of the above embodiments, which will not be repeated here.

[0100] like Figures 3 to 8 As shown, an embodiment of the third aspect of this utility model provides a scroll compressor, including the exhaust assembly in any of the above embodiments. The assembly 6 can be configured as a stationary scroll plate, and the vent 61 on the assembly 6 is configured as a scroll exhaust port. When the machine stops, the one-way valve can close in time to effectively control the flow direction of the refrigerant, reduce the reverse flow of refrigerant caused by air intake, and also reduce the throttling phenomenon, so that the compressor power and energy efficiency remain stable.

[0101] Since it includes the exhaust assembly described above, the scroll compressor of this utility model embodiment has all the advantages and beneficial effects of the above embodiments, which will not be repeated here.

[0102] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A one-way valve, characterized in that, The one-way valve includes: Valve seat (1), the valve seat (1) is provided with a first ventilation channel (11), the first ventilation channel (11) has an air inlet end and an exhaust end arranged opposite to each other, the valve seat (1) is provided with a placement surface (12) on the side where the exhaust end of the first ventilation channel (11) is located, and a support structure (13) is provided in the first ventilation channel (11). Valve plate (2), the valve plate (2) having an open position and a closed position; When the valve plate (2) is in the closed position, the placement surface (12) and the support structure (13) are used to support the valve plate (2), and the valve plate (2) closes the first ventilation channel (11). When the valve plate (2) is in the open position, the valve plate (2) is away from the placement surface (12) and the support structure (13), and the valve plate (2) opens the first ventilation channel (11). The one-way valve can be installed on the assembly (6), which is provided with a vent (61) and a transition chamber (62). The transition chamber (62) has an inlet end and an outlet end arranged opposite to each other. The vent (61) is located at the inlet end of the transition chamber (62). The flow area of ​​the inlet end of the transition chamber (62) is greater than the flow area of ​​the vent (61). The valve seat (1) is located at the outlet end of the transition chamber (62), and the first venting channel (11) is connected to the outlet end of the transition chamber (62).

2. The one-way valve according to claim 1, characterized in that, The support structure (13) includes one or more support plates (131), which are connected to the wall of the first ventilation channel (11); When there are multiple support plates (131), the multiple support plates (131) are connected to each other and intersected.

3. The one-way valve according to claim 1, characterized in that, The top of the support structure (13) is flush with the placement surface (12).

4. The one-way valve according to claim 1, characterized in that, The flow area of ​​the exhaust end of the transition cavity (62) is equal to or greater than the flow area of ​​the first ventilation channel (11).

5. The one-way valve according to claim 1, characterized in that, The assembly (6) is provided with an installation groove (63), which is located at the exhaust end of the transition cavity (62), and the valve seat (1) is located in the installation groove (63).

6. The check valve according to any one of claims 1-3, characterized in that, The one-way valve can be installed on the assembly (6). The one-way valve also includes a valve cover (3). The valve cover (3) is installed on the valve seat (1) and / or on the assembly (6). There is a movable chamber (4) between the valve cover (3) and the valve seat (1). The valve plate (2) is installed in the movable chamber (4).

7. The one-way valve according to claim 6, characterized in that, The one-way valve also includes a guide (5), which is disposed between the valve cover (3) and the valve seat (1). The guide (5) extends in the exhaust direction of the first venting channel (11). The side of the valve plate (2) can slide along the guide (5) to switch between the open position and the closed position.

8. The one-way valve according to claim 7, characterized in that, Multiple guide members (5) are provided, and the multiple guide members (5) are arranged circumferentially at intervals on the valve plate (2).

9. The one-way valve according to claim 7, characterized in that, One of the guide (5) and the valve plate (2) is provided with a limiting groove (51), and the other is provided with a limiting protrusion (21). The limiting protrusion (21) can extend into the limiting groove (51) and slide along the limiting groove (51).

10. The one-way valve according to claim 6, characterized in that, The one-way valve has an exhaust path for discharging gas from the first vent passage (11). The exhaust path includes one or any combination of a first exhaust path, a second exhaust path, a third exhaust path, a fourth exhaust path, a fifth exhaust path, and a sixth exhaust path. The valve plate (2) has a closing part (22) and a second ventilation channel (23). The closing part (22) can close the first ventilation channel (11). The second ventilation channel (23) is located outside the closing part (22). The top of the valve cover (3) is provided with a third ventilation channel (31). When the valve plate (2) is in the open position, the third ventilation channel (31) corresponds to and is connected to the second ventilation channel (23). The second ventilation channel (23) and the third ventilation channel (31) can form the first exhaust path. A first vent hole is provided on the side wall of the valve cover (3). When the valve plate (2) is in the open position, the first vent hole is connected to the movable chamber (4), and the movable chamber (4) and the first vent hole can form a second exhaust path. A second vent hole is provided on the side wall of the valve seat (1). When the valve plate (2) is in the open position, the second vent hole is connected to the movable chamber (4), and the movable chamber (4) and the second vent hole can form a third exhaust path. A first ventilation gap is provided between the valve cover (3) and the valve seat (1). When the valve plate (2) is in the open position, the first ventilation gap is connected to the movable chamber (4). The movable chamber (4) and the first ventilation gap can form a fourth exhaust path. The assembly (6) is provided with an exhaust groove (64), which is located around the valve seat (1). When the valve plate (2) is in the open position, the exhaust groove (64) is connected to the movable chamber (4), and the movable chamber (4) and the exhaust groove (64) can form the fifth exhaust path. There is a second venting gap between the valve cover (3) and the assembly (6). When the valve plate (2) is in the open position, the second venting gap is connected to the movable chamber (4). The movable chamber (4) and the second venting gap can form the sixth exhaust path.

11. The one-way valve according to claim 10, characterized in that, The valve cover (3) is provided with a fourth ventilation channel (32), the position of the fourth ventilation channel (32) is corresponding to the position of the closing part (22), the fourth ventilation channel (32) is connected to the movable chamber (4), and the air intake of the fourth ventilation channel (32) can exert a force on the closing part (22) toward the support structure (13).

12. An exhaust assembly, characterized in that, It includes the assembly (6) and the one-way valve according to any one of claims 1-11, the one-way valve being disposed on the assembly (6).

13. A scroll compressor, characterized in that, Includes the exhaust assembly as described in claim 12, wherein the fitting (6) is a static vortex disk.

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