Exhaust non-return structure for compressor and compressor

Abstract

The invention provides an exhaust non-return structure for a compressor and the compressor, the exhaust non-return structure for the compressor comprises a valve seat and a valve plate assembly, the valve seat is communicated with an exhaust runner of the compressor, the valve seat is provided with a matched non-return structure, the valve plate assembly is arranged on the valve seat in a lifting mode, and the valve plate assembly is provided with an exhaust port; when the compressor exhausts air and the valve plate assembly is in a jacking state, the non-return structure is matched to be staggered with the exhaust port, so that the exhaust flow channel is in an open state; and when the compressor stops exhausting, the valve plate assembly is in an initial falling state and is matched with the non-return structure to block the exhaust port, so that the exhaust runner is in a closed state. The problem that in the prior art, a valve plate of an exhaust check valve of a compressor is prone to breakage is solved.

Description

Technical Field

[0001] The invention relates to the field of compressors, and in particular to an exhaust check structure for a compressor and a compressor. Background Art

[0002] The existing scroll compressor exhaust check method usually adopts the valve plate and valve seat limiting method. The valve plate opens and closes the exhaust port by axial reciprocating motion along the valve seat. When a large-displacement scroll compressor operates under under-compression conditions such as high frequency and high pressure difference, the operating state of the valve plate is unstable and the impact frequency increases. During the frequent and irregular reciprocating motion of a single circular valve plate, the valve plate is prone to tilt and scratch the valve seat, which can easily lead to fatigue fracture of the valve plate. Summary of the invention

[0003] The main purpose of the present invention is to provide an exhaust check valve structure for a compressor and a compressor, so as to solve the problem that the valve plate of the exhaust check valve of the compressor is easy to break in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an exhaust check structure for a compressor, the exhaust check structure comprising a valve seat and a valve plate assembly, the valve seat being connected to the exhaust flow channel of the compressor, the valve seat having a matching check structure, the valve plate assembly being liftably arranged on the valve seat, wherein the valve plate assembly has an exhaust port; when the compressor is exhausting, the valve plate assembly is in a lifted state, and the matching check structure is staggered with the exhaust port so that the exhaust flow channel is in an open state; when the compressor stops exhausting, the valve plate assembly is in a returned initial state, and the matching check structure blocks the exhaust port so that the exhaust flow channel is in a closed state.

[0005] Further, the exhaust port is arranged on the peripheral side of the valve plate assembly, and a matching check structure is provided on the peripheral side of the valve seat.

[0006] Furthermore, the peripheral side wall of the valve seat provides a matching check structure, and the periphery of the valve plate assembly has a flange structure extending toward the valve seat, and at least a portion of the flange structure is provided with an exhaust port and cooperates with the matching check structure.

[0007] Furthermore, the peripheral side wall of the valve seat has an accommodating space for at least a portion of the flange structure to extend into.

[0008] Furthermore, an annular cavity is formed on the peripheral side wall of the valve seat, and the annular cavity is at least communicated with the top surface of the valve seat, and the annular cavity provides an accommodating space.

[0009] Furthermore, the extension length H1 of the flange structure is smaller than the depth H2 of the annular clamp cavity.

[0010] Furthermore, the valve plate assembly also includes a top plate, and the flange structure is arranged around the circumference of the top plate. When the valve plate assembly is in an initial state of falling back, the top plate blocks the top opening of the annular clamp cavity.

[0011] Furthermore, the valve plate assembly also includes a filter device, which is arranged at the exhaust port.

[0012] Furthermore, a snap-fit ​​structure is provided at the edge of the exhaust port, and the filter device is snap-fitted with the snap-fit ​​structure.

[0013] Furthermore, the exhaust check structure also includes a valve cover, which has a stop structure. The stop structure and the valve seat are spaced apart in the direction of movement of the valve plate assembly, and both the stop structure and the valve seat can limit the stop of the valve plate assembly; when the valve plate assembly is in a raised state, the valve plate assembly contacts the stop structure; when the valve plate assembly is in an initial state of falling back, the top plate of the valve plate assembly contacts the valve seat.

[0014] Furthermore, the side of the valve cover has a connecting portion, which is used to be fixed to the valve seat; and / or the side of the valve cover also has a side exhaust hole for avoiding the exhaust port; and / or the top of the valve cover also has a top through hole for assisting the valve plate assembly to fall back.

[0015] Furthermore, the exhaust port is arranged at the top of the valve plate assembly, and the end of the valve seat facing the top of the valve plate assembly has a matching check structure. When the valve plate assembly is in a raised state, the matching check structure and the exhaust port are spaced apart, and when the valve plate assembly is in an initial state of falling back, the matching check structure and the exhaust port are fitted.

[0016] According to another aspect of the present invention, a compressor is provided, comprising a stator assembly and the above-mentioned exhaust check structure, wherein the stator assembly has an exhaust flow channel; the exhaust check structure is arranged at the end of the exhaust flow channel and communicates with the exhaust flow channel.

[0017] Furthermore, the stator disk assembly has a throttling channel, and the throttling channel communicates the annular clamping cavity of the valve seat of the exhaust check structure with the suction side of the stator disk assembly.

[0018] Furthermore, the stator disk assembly further includes a throttle pin, at least a portion of which is located in the throttle passage.

[0019] By applying the technical solution of the present invention, the exhaust port of the valve plate assembly is matched with the matching check structure of the valve seat to realize the opening and closing of the exhaust channel, thereby reducing the wear of the valve plate assembly and extending the service life of the exhaust check structure. Specifically, when gas flows out of the exhaust flow channel, the valve plate assembly rises under the pressure of the gas, so that the exhaust port and the matching check structure are staggered, and the gas can flow out from the exhaust port, so that the exhaust flow channel is in an open state. When no gas flows out of the exhaust flow channel, the valve plate assembly falls back, and the matching check structure blocks the exhaust port, so that the exhaust flow channel is in a closed state. In this way, the valve plate assembly changes the matching state of the exhaust port and the matching check structure by lifting and lowering. Compared with the traditional solution of setting the exhaust port on the valve seat and closing and opening the exhaust port by changing the matching state of the valve plate and the exhaust port, the setting method of this embodiment avoids the wear of the valve plate assembly during the lifting process and the situation that the tilting leads to the fracture, thereby avoiding scratching the valve seat and damaging the valve plate assembly itself, ensuring the stable operation of the valve plate assembly, thereby improving the reliability of the valve plate assembly, and then improving the reliability of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 A schematic diagram showing the structure of the exhaust check structure and the static disk assembly of the present invention when the exhaust flow channel is in an open state;

[0022] Figure 2 A schematic diagram of the structure of the exhaust check structure and the static disk assembly when the exhaust flow channel is in a closed state is shown;

[0023] Figure 3 An axonometric view of the exhaust check structure and the stator assembly is shown;

[0024] Figure 4 A schematic diagram showing the structure of the valve plate assembly when no filter device is installed;

[0025] Figure 5 A schematic diagram of the structure of the valve plate assembly is shown;

[0026] Figure 6 Shows Figure 5 A schematic diagram of the structure from another angle;

[0027] Figure 7 A schematic structural diagram of a filtering device is shown;

[0028] Figure 8 A schematic diagram of the structure of the valve seat is shown;

[0029] Fig. 9 A schematic diagram showing the structure of the valve seat from another angle;

[0030] Fig.10 A top view of the valve seat is shown;

[0031] Fig.11 A schematic diagram of the structure of the valve cover is shown;

[0032] Fig.12 Shows Fig.11 A structural diagram from another angle;

[0033] Fig.13 A schematic structural diagram of a static disk assembly is shown.

[0034] The above drawings include the following reference numerals:

[0035] 10. Valve seat; 11. Annular clamping cavity; 20. Valve plate assembly; 21. Flanging structure; 211. Exhaust port; 22. Filter device; 23. Top plate; 24. Clamping structure; 30. Valve cover; 31. Stop structure; 32. Connecting part; 33. Side exhaust hole; 34. Top through hole; 40. Static disk assembly; 41. Throttle pin; 42. Exhaust flow channel; 43. Throttle channel. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0038] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0039] In order to solve the problem that a valve plate of an exhaust check valve of a compressor is easily broken in the prior art, the present invention provides an exhaust check structure for a compressor and a compressor.

[0040] like Figures 1 to 13As shown, the exhaust check structure includes a valve seat 10 and a valve plate assembly 20, the valve seat 10 is connected to the exhaust flow channel 42 of the compressor, the valve seat 10 has a matching check structure, and the valve plate assembly 20 can be raised and lowered on the valve seat 10, wherein the valve plate assembly 20 has an exhaust port 211; when the compressor is exhausting, the valve plate assembly 20 is in a raised state, and the matching check structure is staggered with the exhaust port 211, so that the exhaust flow channel 42 is in an open state; when the compressor stops exhausting, the valve plate assembly 20 is in a falling initial state, and the matching check structure blocks the exhaust port 211, so that the exhaust flow channel 42 is in a closed state.

[0041] In this embodiment, the exhaust port 211 of the valve plate assembly 20 is matched with the matching check structure of the valve seat 10 to realize the opening and closing of the exhaust channel, thereby reducing the wear of the valve plate assembly 20 and extending the service life of the exhaust check structure. Specifically, when gas flows out of the exhaust flow channel 42, under the action of the gas pressure, the valve plate assembly 20 rises, so that the exhaust port 211 and the matching check structure are staggered, and the gas can flow out from the exhaust port 211, so that the exhaust flow channel 42 is in an open state. When no gas flows out of the exhaust flow channel 42, the valve plate assembly 20 falls back, and the matching check structure blocks the exhaust port 211, so that The exhaust flow channel 42 is in a closed state. In this way, the valve plate assembly 20 changes the matching state of the exhaust port 211 and the matching check structure by lifting. Compared with the traditional scheme of setting the exhaust port 211 on the valve seat 10, the exhaust port 211 is closed and opened by changing the matching state of the valve plate and the exhaust port 211. The setting method of this embodiment avoids the valve plate assembly 20 from being worn and tilted during the lifting process, thereby avoiding scratching the valve seat 10 and damaging the valve plate assembly 20 itself, ensuring the stable operation of the valve plate assembly 20, thereby improving the reliability of the valve plate assembly 20 and further improving the reliability of the compressor.

[0042] like Figure 4 As shown, in this embodiment, the exhaust port 211 is arranged on the peripheral side of the valve plate assembly 20, and the peripheral side of the valve seat 10 has a matching check structure, so that when the valve plate assembly 20 is lifted or lowered relative to the valve seat 10, the exhaust port 211 is lifted or lowered relative to the matching check structure, thereby changing the matching state between the exhaust port 211 and the matching check structure. When the exhaust port 211 rises, the exhaust port 211 and the matching check structure are staggered, so that the exhaust port 211 is opened, allowing gas to pass through, playing a role of exhaust; when the exhaust port 211 falls, the matching check structure blocks the exhaust port 211, so that the exhaust port 211 is closed, and gas cannot pass through, playing a role of checking.

[0043] like Figure 8 , Fig. 9 , Fig.10 As shown, in this embodiment, the peripheral side wall of the valve seat 10 provides a matching check structure, such as Figure 4As shown, the periphery of the valve plate assembly 20 has a flange structure 21 extending toward the valve seat 10, as shown in FIG. Figure 1 , Figure 2 , Figure 3 As shown, at least a portion of the flange structure 21 is provided with an exhaust port 211 and cooperates with the matching check structure, that is, at least a portion of the valve plate assembly 20 is arranged above the valve seat 10, and the flange structure 21 is located at one end of the valve plate assembly 20 close to the valve seat 10, so that when the valve plate assembly 20 rises, the flange structure 21 rises accordingly, and the exhaust port 211 rises accordingly, that is, the exhaust port 211 moves in a direction away from the matching check structure, so that the exhaust port 211 is staggered with the matching check structure, and the exhaust port 211 is opened; when the valve plate assembly 20 falls back, the flange structure 21 falls back accordingly, and the exhaust port 211 falls back accordingly, that is, the exhaust port 211 moves in a direction close to the matching check structure, so that the matching check structure blocks the exhaust port 211, and the exhaust port 211 is closed. The flange structure 21 of this embodiment is arranged on the circumferential side of the valve plate assembly 20 and is annular in shape, which increases the contact area with the matching check structure, thereby improving the stability of the operation of the valve plate assembly 20 and avoiding the wear of the single circular valve plate due to overturning and movement, thereby increasing the service life of the valve plate assembly 20.

[0044] like Figure 8 As shown, in this embodiment, the peripheral side wall of the valve seat 10 has an accommodation space for at least a portion of the flange structure 21 to extend into, so that the exhaust port 211 can extend into the accommodation space to achieve a non-return function. In other words, when the flange structure 21 falls back, the exhaust port 211 can extend into the accommodation space of the valve seat 10, thereby achieving the blocking of the exhaust port 211 and further achieving the non-return function.

[0045] like Fig. 9 As shown, in this embodiment, the circumferential side wall of the valve seat 10 is formed with an annular clamping cavity 11, and the annular clamping cavity 11 is at least connected to the top surface of the valve seat 10, and the annular clamping cavity 11 provides an accommodating space, so that the annular clamping cavity 11 serves as a matching check structure, and when the flange structure 21 falls back, it can extend into the annular clamping cavity 11 to realize the check function. Specifically, the annular clamping cavity 11 is arranged along the circumference of the valve seat 10, and the opening of the annular clamping cavity 11 is upward, at least part of the flange structure 21 is located in the annular clamping cavity 11, the flange structure 21 is matched with the annular clamping cavity 11 in a clearance, and the flange structure 21 is embedded in the annular clamping cavity 11, so that the flange structure 21 can reciprocate in the annular clamping cavity 11, so that the valve plate assembly 20 can be lifted and lowered along the axial direction of the valve seat 10, thereby changing the matching state of the exhaust port 211 and the annular clamping cavity 11, thereby realizing the exhaust and check functions of the exhaust check structure.

[0046] like Figure 2As shown, in this embodiment, the extension length H1 of the flanging structure 21 is less than the depth H2 of the annular clamping cavity 11. That is to say, the flanging structure 21 can completely extend into the annular clamping cavity 11 in its length direction. In this way, when the valve plate assembly 20 falls back, the flanging structure 21 can completely extend into the annular clamping cavity 11 to ensure that the exhaust port 211 is blocked by the annular clamping cavity 11. In this embodiment, the flanging structure 21 is arranged as an annular shape similar to the outer shape of the annular clamping cavity 11, and the diameter of the flanging structure 21 is between the inner diameter and the outer diameter of the annular clamping cavity 11, so that the flanging structure 21 can just be located inside the annular clamping cavity 11; H1 < H2, that is, when the valve plate assembly 20 falls back, the upper end of the flanging structure 21 can abut against the upper end of the annular clamping cavity 11 to close the exhaust port 211, and at the same time, it is beneficial to streamline the volume of the exhaust check structure and reduce its occupied space. Of course, if necessary, H1 > H2 can also be set, but it should be noted that the exhaust port 211 is set at a lower position of the flanging structure 21 to ensure that when the valve plate assembly 20 falls back, the exhaust port 211 can still be located inside the annular clamping cavity 11, so that the valve seat 10 can block the exhaust port 211 to ensure the check function.

[0047] As Figure 5 shown, in this embodiment, the valve plate assembly 20 further includes a top plate 23, and the flanging structure 21 is arranged around the circumferential side of the top plate 23. When the valve plate assembly 20 is in the initial state of falling back, the top plate 23 blocks the top opening of the annular clamping cavity 11, so that the valve plate assembly 20 can achieve the check function when it falls back. Specifically, the valve plate assembly 20 is arranged in a cylindrical shape, the top plate 23 is arranged in a circular shape, and an annular flanging structure 21 is arranged along the edge of the top plate 23. The flanging structure 21 extends downward. When the valve plate assembly 20 is in the initial state of falling back, the flanging structure 21 is located inside the annular clamping cavity 11, and the lower surface of the top plate 23 is close to the top opening of the annular clamping cavity 11. On the one hand, the annular clamping cavity 11 blocks the exhaust port 211 on the flanging structure 21. On the other hand, the top plate 23 blocks the gas discharge channel of the lower valve seat 10. In this way, when there is no gas discharged from the compressor, the exhaust channel is in a closed state, avoiding the gas outside the exhaust channel from flowing back into the exhaust channel.

[0048] Preferably, the exhaust ports 211 are arranged in multiple numbers and are spaced apart, so as to not only ensure the contact area between the flanging structure 21 and the annular clamping cavity 11, ensure the stable operation of the valve plate assembly 20 during work, and avoid the fracture of the valve plate assembly 20, but also ensure the exhaust area, so that the valve plate assembly 20 can exhaust smoothly. In this embodiment, the exhaust ports 211 are arranged in two numbers and are symmetrically arranged on the circumferential side surface of the flanging structure 21. Of course, the number of the exhaust ports 211 is not limited to this, and can also be arranged in three, four, etc., and are spaced apart from each other to ensure the strength of the flanging structure 21.

[0049] As Figure 6As shown, in this embodiment, the valve plate assembly 20 further includes a filter device 22, which is disposed at the exhaust port 211. The filter device 22 is disposed so that when the exhaust check structure is exhausted, the lubricating oil discharged with the gas flows downward along the side wall of the annular clamp cavity 11 through the exhaust port 211 and is intercepted by the filter device 22 and gathers at the bottom of the annular clamp cavity 11. Figure 7 As shown, the shape of the filter device 22 of this embodiment is consistent with the shape of the exhaust port 211. The filter device 22 is in the shape of an arc-shaped sheet and is arranged at the position of the exhaust port 211. The area of ​​the filter device 22 is not less than the area of ​​the exhaust port 211, so that the filter device 22 can cover the exhaust port 211 to ensure the oil filtering effect. Optionally, the filter device 22 can be arranged in a filter net.

[0050] In this embodiment, a snap-fit ​​structure 24 is provided at the edge of the exhaust port 211, and the filter device 22 is snap-fitted with the snap-fit ​​structure 24. The exhaust port 211 of this embodiment is arranged in an arc shape along the circumference of the flange structure 21, and the exhaust port 211 forms an arc-shaped notch at one end of the flange structure 21 away from the top plate 23. The edge of the exhaust port 211, that is, the edge of the flange structure 21, is provided with a snap-fit ​​structure 24. The snap-fit ​​structure 24 can be specifically provided as a slot provided at the edge of the flange structure 21. The filter device 22 is in an arc-shaped sheet shape, so that the edge of the filter device 22 is embedded in the slot, thereby fixing the filter device 22 and the flange structure 21. Of course, the fixing method of the filter device 22 and the flange structure 21 is not limited to this, and the filter device 22 and the flange structure 21 can also be fixed by welding or riveting.

[0051] like Fig.11 , Fig.12 As shown, in the present embodiment, the exhaust check structure further includes a valve cover 30, and the valve cover 30 has a stop structure 31. The stop structure 31 and the valve seat 10 are spaced apart in the direction of movement of the valve plate assembly 20, and both the stop structure 31 and the valve seat 10 can limit the stop of the valve plate assembly 20; when the valve plate assembly 20 is in a raised state, the valve plate assembly 20 contacts the stop structure 31; when the valve plate assembly 20 is in an initial state of falling back, the top plate 23 of the valve plate assembly 20 contacts the valve seat 10. A stop structure 31 is provided at the top of the valve cover 30. The valve plate assembly 20 is located inside the valve cover 30 and the valve seat 10 and can move axially along the valve seat 10. When the valve plate assembly 20 moves axially, the stop structure 31 of the valve cover 30 is provided above the valve plate assembly 20, thereby preventing the flange structure 21 from escaping from the annular clamping cavity 11. The annular clamping cavity 11 of the valve seat 10 is provided below the valve plate assembly 20, thereby preventing the valve plate assembly 20 from falling into the exhaust passage and affecting the normal operation of the compressor. Preferably, the stop structure 31 is provided at the top of the valve cover 30, and the height of the valve cover 30 is used to limit the movable distance of the valve plate assembly 20.

[0052] In this embodiment, the side of the valve cover 30 has a connecting portion 32, and the side of the corresponding valve seat 10 is also provided with a connecting structure. The connecting portion 32 is used to be fixed with the connecting structure of the valve seat 10. Specifically, the connecting portion 32 and the connecting structure are both arranged along the axial direction of the valve seat 10, and the connecting portion 32 and the connecting structure are axially aligned. The connecting portion 32 and the connecting structure of this embodiment are both arranged as stud hole structures, and are symmetrically arranged in two. The valve seat 10 and the valve cover 30 are fixed by bolts, and then the valve seat 10 is fixed to the stator assembly 40. The length of the connecting portion 32 is not limited, and a stud hole structure can be provided, so that the bolts pass through the stud hole structure to fix the valve cover 30.

[0053] In this embodiment, the side of the valve cover 30 also has a side exhaust hole 33 for avoiding the exhaust port 211, and the area of ​​the side exhaust hole 33 is not less than the area of ​​the exhaust port 211 to ensure that the gas exhausted from the exhaust port 211 can be smoothly discharged to the outside of the exhaust check structure. Specifically, the structure of the valve cover 30 is similar to the outer structure of the valve plate assembly 20, and is cylindrical. The cylinder has an upper end face and a peripheral side face. The middle of the cylinder is a cylindrical cavity, and the diameter of the cavity is not less than the diameter of the annular clamp cavity 11, so as to ensure that the valve plate assembly 20 can be smoothly lifted and lowered. The stud hole structure protrudes from the peripheral side face of the cylinder, and the peripheral side face of the cylinder is provided with a side exhaust hole 33. The stop structure 31 of the valve cover 30 is located at the upper end face of the cylinder. When the gas in the exhaust flow channel 42 impacts the valve plate assembly 20, the valve plate assembly 20 rises, and the exhaust port 211 is aligned with the side exhaust hole 33, and the gas is discharged from the exhaust check structure. When the gas is no longer discharged from the exhaust flow channel 42, the valve plate assembly 20 falls back, and the valve plate assembly 20 blocks the exhaust flow channel 42. Of course, the side exhaust hole 33 may not be aligned with the exhaust port 211 of the valve plate assembly 20 when it rises, and it is sufficient to ensure that the side exhaust hole 33 is sufficient to discharge the gas in the exhaust port 211.

[0054] In this embodiment, the top of the valve cover 30 also has a top through hole 34 for assisting the valve plate assembly 20 to fall back. Specifically, the upper end surface of the valve cover 30 is a hollow circular surface, the middle of the circular surface is the top through hole 34, and the edge of the top through hole 34 is a stop structure 31. When the compressor stops and no gas is discharged from the exhaust flow channel 42, on the one hand, the valve plate assembly 20 loses the impact of the exhaust pressure and falls back due to gravity. On the other hand, the high-pressure refrigerant at one end of the valve cover 30 away from the valve seat 10 acts on the top plate 23 of the valve plate assembly 20 through the top through hole 34 of the valve cover 30, assisting the valve plate assembly 20 to fall back to the initial state, so that the exhaust channel is closed.

[0055] The present invention further provides a compressor, comprising a stator assembly 40 and the above-mentioned exhaust check structure, wherein the stator assembly 40 has an exhaust flow channel 42; the exhaust check structure is arranged at the end of the exhaust flow channel 42 and communicates with the exhaust flow channel 42. The stator assembly 40 of this embodiment is horizontally arranged in an annular shape inside the compressor, and the exhaust check structure is arranged above the stator assembly 40. Gas flows out from the exhaust flow channel 42 of the stator assembly 40 to the exhaust check structure, and the exhaust pressure affects the lifting and lowering of the exhaust check structure to realize the opening and closing of the exhaust flow channel 42.

[0056] When the stator assembly 40 is exhausted, the end of the exhaust flow channel 42 is in an open state, and the lubricating oil is easily discharged by the gas, causing the oil discharge rate of the compressor to increase, and aggravating the wear of the stator assembly 40 and the moving plate assembly. Fig.13 As shown, in this embodiment, the stator assembly 40 has a throttling channel 43, and the throttling channel 43 connects the annular clamping cavity 11 of the valve seat 10 of the exhaust check structure with the suction side of the stator assembly 40, so that the lubricating oil intercepted by the filter device 22 can flow back to the suction side of the stator assembly 40, thereby lubricating the entire volute of the compressor. Specifically, in this embodiment, the throttling channel 43 is set at the position where the bottom of the annular clamping cavity 11 of the valve seat 10 is connected to the stator assembly 40. The throttling channel 43 passes through the stator assembly 40. The extension direction of the throttling channel 43 does not have to be perpendicular to the upper surface of the stator assembly 40, and can be set at an angle. One end of the throttling channel 43 is located at the bottom of the annular clamping cavity 11, and the other end extends to the edge position of the suction side of the stator assembly 40. In this way, the oil droplets mixed in the gas discharged from the exhaust flow channel 42 flow into the throttling channel 43 along the annular clamping cavity 11 under the interception of the filter device 22, and the high-pressure oil droplets pass through the throttling channel 43 of the stator assembly 40, and the throttling channel 43 is throttled. The flow is depressurized to form low-pressure gas which enters the suction side of the stator plate assembly 40 to lubricate the entire vortex gear of the compressor, thereby realizing oil supply circulation, ensuring that the vortex gear is fully lubricated, solving the problem of oil shortage and wear of the vortex gear, and reducing the oil discharge rate of the compressor. The vortex gear includes the vortex gear of the stator plate assembly 40 and the vortex gear of the moving plate assembly of the compressor; when the compressor stops, gas is no longer discharged from the exhaust flow channel 42, and the exhaust pressure disappears. The high-pressure refrigerant at the end of the valve plate assembly 20 away from the stator plate assembly 40 acts on the top plate 23 of the valve plate assembly 20 through the top through hole 34 of the valve cover 30, and the valve plate assembly 20 falls back downward, and the exhaust flow channel 42 is closed.

[0057] like Fig.13As shown, in this embodiment, the stator assembly 40 further includes a throttle pin 41, at least a portion of which is located in the throttle channel 43, thereby playing a role of throttling and reducing pressure, converting high-pressure oil droplets intercepted by the filter device 22 into low-pressure oil droplets, and leading them back to the suction side of the stator assembly 40, thereby achieving circulating lubrication of the entire scroll gear. The length of the throttle channel 43 in this embodiment is greater than the length of the throttle pin 41, and the throttle pin 41 is arranged in the throttle channel 43 to achieve throttling and reducing pressure of the lubricating oil.

[0058] In an embodiment not shown in the figure, different from the above-mentioned exhaust check structure, the above-mentioned exhaust port 211 is arranged on the peripheral side of the valve plate assembly 20, while the exhaust port 211 of this embodiment is arranged on the top of the valve plate assembly 20. In this embodiment, the exhaust port 211 is arranged on the top of the valve plate assembly 20, and the end of the valve seat 10 facing the top of the valve plate assembly 20 has a matching check structure. When the valve plate assembly 20 is in the lifting state, the matching check structure is arranged at a distance from the exhaust port 211, and when the valve plate assembly 20 is in the initial state of falling back, the matching check structure is in contact with the exhaust port 211. That is to say, only the setting position of the exhaust port 211 in this embodiment is different from that in the above-mentioned embodiment. When the exhaust flow channel 42 is exhausted, the valve plate assembly 20 is impacted by the exhaust pressure and rises, so that the exhaust port 211 on the top of the valve plate assembly 20 is away from the exhaust check structure of the valve seat 10, and the gas is discharged through the exhaust port 211 to realize the exhaust function. When the compressor stops, the valve plate assembly 20 falls back to prevent the gas outside the exhaust check structure from flowing back to the exhaust flow channel 42, thereby realizing the check function. Specifically, the top plate 23 of the valve plate assembly 20 can be set as a hollow annular plate, the hollow part is used as the exhaust port 211, the top plate 23 of the valve seat 10 is used as a matching check structure, and a through hole is set on the edge of the top plate 23 of the valve seat 10. When the exhaust pressure impacts, the valve plate assembly 20 rises, the valve plate assembly 20 rises, and the annular plate is away from the top plate 23 of the valve seat 10 to achieve exhaust; when the exhaust pressure disappears, the valve plate assembly 20 falls back, the annular plate is superimposed on the top plate 23 of the valve seat 10, and the top plate 23 of the valve plate assembly 20 and the top plate 23 of the valve seat 10 block each other, so that the exhaust port 211 of the top plate 23 of the valve plate assembly 20 and the through hole of the top plate 23 of the valve seat 10 are closed to achieve check. Of course, the setting method of the exhaust port 211 and the matching check structure is not limited to this, and the position of the exhaust port 211 and the position of the matching check structure can be flexibly set, and can cooperate with each other to achieve the exhaust and check functions.

[0059] In this embodiment, when the compressor operates normally, the working states of the exhaust check structure and the stator plate assembly 40 are as follows: when the compressor is running, the valve plate assembly 20 starts to move upward under the action of the exhaust pressure, and the valve plate assembly 20 is in a lifted state. The gas exhausted in the exhaust flow channel 42 is discharged from the side exhaust hole of the valve cover 30 through the exhaust port 211. Due to the large contact area between the flange structure 21 and the matching check structure and the guiding effect of the matching check structure, the valve plate assembly 20 maintains steady-state operation. At the same time, the high-pressure oil droplets mixed in the gas discharged from the exhaust flow channel 42 are intercepted by the filter device 22, accumulated at the bottom of the annular clamp cavity 11, and enter the suction side of the stator plate assembly 40 along the throttling channel 43 of the stator plate assembly 40 to lubricate the entire vortex tooth.

[0060] It should be noted that, the multiple in the above embodiments refers to at least two.

[0061] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0062] 1. Solve the problem of easy breakage of the valve plate of the compressor exhaust check valve in the prior art;

[0063] 2. By arranging the exhaust port of the valve plate assembly and the matching check structure of the valve seat, the exhaust passage can be opened and closed, thereby reducing the wear of the valve plate assembly and extending the service life of the exhaust check structure;

[0064] 3. The oil droplets mixed in the gas discharged from the exhaust flow channel are intercepted by the filter device and flow into the throttling channel along the annular clamp cavity. The high-pressure oil droplets pass through the throttling channel of the stator disk assembly, throttle and reduce the pressure, forming low-pressure gas that enters the suction side of the stator disk assembly to lubricate the entire volute of the compressor, thereby realizing the oil supply cycle, ensuring that the volute is fully lubricated, solving the problem of oil shortage and wear of the volute, and reducing the oil discharge rate of the compressor.

[0065] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0066] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0067] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An exhaust check structure for a compressor, characterized in that: The exhaust check structure comprises: A valve seat (10), the valve seat (10) being in communication with an exhaust flow passage (42) of the compressor, the valve seat (10) having a matching check structure; A valve plate assembly (20), the valve plate assembly (20) being arranged on the valve seat (10) in a liftable manner, wherein the valve plate assembly (20) has an exhaust port (211); When the compressor is exhausting air, the valve plate assembly (20) is in a raised state and the matching check structure is staggered from the exhaust port (211), so that the exhaust flow channel (42) is in an open state; When the compressor stops exhausting, the valve plate assembly (20) is in a falling initial state, and the matching non-return structure blocks the exhaust port (211), so that the exhaust flow channel (42) is in a closed state.

2. The exhaust check structure according to claim 1, characterized in that: The exhaust port (211) is arranged on the peripheral side of the valve plate assembly (20), and the peripheral side of the valve seat (10) has the matching check structure.

3. The exhaust check structure according to claim 1, characterized in that: The peripheral side wall of the valve seat (10) provides the matching check structure, and the peripheral edge of the valve plate assembly (20) has a flange structure (21) extending toward the valve seat (10), and at least a portion of the flange structure (21) is provided with the exhaust port (211) and cooperates with the matching check structure.

4. The exhaust check structure according to claim 3, characterized in that: The peripheral side wall of the valve seat (10) has an accommodating space into which at least a portion of the flange structure (21) extends.

5. The exhaust check structure according to claim 4, characterized in that: An annular cavity (11) is formed on the peripheral side wall of the valve seat (10), and the annular cavity (11) is at least communicated with the top surface of the valve seat (10), and the annular cavity (11) provides the accommodating space.

6. The exhaust check structure according to claim 5, characterized in that: The extension length H1 of the flange structure (21) is smaller than the depth H2 of the annular clamping cavity (11).

7. The exhaust check structure according to claim 5, characterized in that: The valve plate assembly (20) further comprises a top plate (23), and the flange structure (21) is arranged around the circumference of the top plate (23). When the valve plate assembly (20) is in an initial state of falling back, the top plate (23) blocks the top opening of the annular clamp cavity (11).

8. The exhaust check structure according to claim 1, characterized in that: The valve plate assembly (20) further comprises a filtering device (22), wherein the filtering device (22) is arranged at the exhaust port (211).

9. The exhaust check structure according to claim 8, characterized in that: A snap-fit ​​structure (24) is provided at the edge of the exhaust port (211), and the filter device (22) is snap-fitted with the snap-fit ​​structure (24).

10. The exhaust check structure according to any one of claims 1 to 9, characterized in that: The exhaust check structure further comprises a valve cover (30), the valve cover (30) having a stop structure (31), the stop structure (31) and the valve seat (10) being arranged at intervals in the direction of movement of the valve plate assembly (20), and the stop structure (31) and the valve seat (10) are both capable of limiting and stopping the valve plate assembly (20); When the valve plate assembly (20) is in a raised state, the valve plate assembly (20) is in contact with the stop structure (31); When the valve plate assembly (20) is in an initial state of falling back, the top plate (23) of the valve plate assembly (20) is in contact with the valve seat (10).

11. The exhaust check structure according to claim 10, characterized in that: The side of the valve cover (30) has a connecting portion (32), and the connecting portion (32) is used to be fixed to the valve seat (10); and / or The side of the valve cover (30) further comprises a side exhaust hole (33) for avoiding the exhaust port (211); and / or The top of the valve cover (30) also has a top through hole (34) for assisting the valve plate assembly (20) to fall back.

12. The exhaust check structure according to claim 1 or 8 or 9, characterized in that: The exhaust port (211) is arranged at the top of the valve plate assembly (20), and one end of the valve seat (10) facing the top of the valve plate assembly (20) has a matching check structure. When the valve plate assembly (20) is in a raised state, the matching check structure and the exhaust port (211) are spaced apart, and when the valve plate assembly (20) is in an initial state of falling back, the matching check structure and the exhaust port (211) are in contact.

13. A compressor, characterized in that: include: A stator assembly (40), wherein the stator assembly (40) has an exhaust flow passage (42); An exhaust check structure as claimed in any one of claims 1 to 12, wherein the exhaust check structure is arranged at the end of the exhaust flow passage (42) and is in communication with the exhaust flow passage (42).

14. A compressor according to claim 13, characterized in that: The stator disk assembly (40) has a throttling channel (43), and the throttling channel (43) connects the annular clamping cavity (11) of the valve seat (10) of the exhaust check structure with the suction side of the stator disk assembly (40).

15. A compressor according to claim 14, characterized in that: The stator assembly (40) further comprises a throttle pin (41), at least a portion of which is located in the throttle passage (43).

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