Exhaust structure and compressor

Abstract

The application discloses an exhaust structure and a compressor, wherein the exhaust structure comprises an exhaust valve seat, an exhaust valve sheet and a lift limiter; the exhaust valve seat is provided with an exhaust port; one end of the exhaust valve sheet is fixedly installed on the exhaust valve seat, and the other end of the exhaust valve sheet can move close to or away from the exhaust valve seat to open or close the exhaust port; the exhaust valve sheet is provided with a shunt hole penetrating through the exhaust valve sheet, and the shunt hole is arranged in a staggered mode with the exhaust port; and the lift limiter is installed on the exhaust valve seat and located on the side of the exhaust valve sheet away from the exhaust valve seat, so as to limit the opening range of the exhaust valve sheet. The exhaust structure of the technical scheme avoids vortex generated between the exhaust valve sheet and the exhaust valve seat due to too much compressed gas, and reduces the exhaust resistance. In addition, under the condition that the sectional area of the exhaust port is unchanged, the exhaust passage on the exhaust valve sheet is increased, the flow rate of the exhaust port is improved, and the working energy efficiency of the compressor is improved.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to an exhaust structure and a compressor. Background Technology

[0002] Compressor energy efficiency is one of the important factors affecting the energy efficiency of air conditioners, and the compressor exhaust structure is one of the key aspects of compressor energy efficiency optimization.

[0003] In related technologies, during the compression and discharge process of a rotary compressor, the compressed gas forms vortices of varying sizes at corners or dead zones. The generation of these vortices impedes the flow field, directly affecting the gas flow rate at the exhaust port and increasing flow resistance. Simultaneously, due to the obstruction of the exhaust valve plate, the compressed gas escapes to both sides after impacting the valve plate, leading to increased exhaust resistance and impacting compressor efficiency. Summary of the Invention

[0004] The main objective of this invention is to propose an exhaust structure that aims to reduce compressor exhaust resistance loss, increase exhaust outlet flow rate, improve exhaust effect, and thereby improve the compressor's working efficiency.

[0005] To achieve the above objectives, the present invention provides an exhaust structure comprising:

[0006] An exhaust valve seat, wherein the exhaust valve seat is provided with an exhaust port;

[0007] An exhaust valve plate, one end of which is fixedly mounted to the exhaust valve seat, and the other end which can move closer to or further away from the exhaust valve seat to open or close the exhaust port; the exhaust valve plate is provided with a diversion hole penetrating the exhaust valve plate, the diversion hole being offset from the exhaust port; and

[0008] A lift limiter is installed on the exhaust valve seat and located on the side of the exhaust valve plate opposite to the exhaust valve seat, in order to limit the opening range of the exhaust valve plate.

[0009] In one embodiment of the present invention, the end of the exhaust valve plate that is fixedly connected to the exhaust valve seat is defined as the fixing part, the part of the exhaust valve plate that covers the exhaust port is defined as the sealing part, and the diversion hole is located between the sealing part and the fixing part.

[0010] In one embodiment of the present invention, the lift limiter is provided with a flow guide channel that penetrates the lift limiter, and the flow guide channel is connected to the flow diversion hole.

[0011] In one embodiment of the present invention, the flow guiding channel includes a flow guiding groove communicating with the flow splitting hole and a flow guiding hole communicating with the flow guiding groove. The flow guiding groove is located on the surface of the lift limiter near the exhaust valve plate, and the flow guiding hole passes through the upper and lower sides of the lift limiter and is located above the exhaust port.

[0012] In one embodiment of the present invention, the lift limiter includes a connecting part and an upturned part. The connecting part and the fixing part of the exhaust valve plate are fixedly installed on the exhaust valve seat by rivets. The upturned part is upturned in a direction away from the exhaust valve seat and is correspondingly provided with the cover part. The guide hole is located in the upturned part.

[0013] In one embodiment of the present invention, the exhaust valve seat is provided with an annular boss on the outer periphery of the exhaust port, and when the exhaust valve plate closes the exhaust port, the exhaust valve plate is sealed to the annular boss.

[0014] The diameter of the exhaust port is defined as d1, and the inner diameter of the contact area between the annular boss and the exhaust valve plate is defined as d2, satisfying d2-d1>0.6mm.

[0015] In one embodiment of the present invention, when the exhaust valve plate closes the exhaust port, the center of the cover portion is collinear with the central axis of the exhaust port, and the distance between the end of the diversion hole near the cover portion and the center of the cover portion is defined as L1, satisfying L1 > 0.5d2.

[0016] In one embodiment of the present invention, the direction from the fixing part to the sealing part of the exhaust valve plate is defined as the length direction. On the cross-section perpendicular to the length direction of the exhaust valve plate, the opening width of the diversion hole is defined as W1, and the width of the exhaust valve plate is defined as W2, satisfying W1 / W2≤0.5.

[0017] In one embodiment of the present invention, when the exhaust valve plate closes the exhaust port, the plane on which the upper surface of the exhaust valve plate is located is the first projection plane. In the projection of the lift limiter on the first projection plane, the distance between the end of the guide groove away from the guide hole and the center of the guide hole is L3, the distance between the end of the diversion hole away from the cover and the center of the cover is L2, and the distance between the end of the diversion hole close to the cover and the center of the cover is L1, satisfying 0.5(L2-L1)≤L3≤L2.

[0018] In one embodiment of the present invention, in the thickness direction of the lift limiter, the depth of the end of the guide groove away from the guide hole is defined as H2, the depth of the end of the guide groove close to the guide hole is defined as H1, and the thickness of the lift limiter is H3, satisfying H1≤H2≤H3.

[0019] In one embodiment of the present invention, the cross-sectional shape of the diversion hole in the cross-section perpendicular to the thickness direction of the exhaust valve plate is a rounded rectangle, an ellipse, a trapezoid, or a multi-hole shape.

[0020] And / or, in a cross-section perpendicular to the thickness direction of the lift limiter, the cross-sectional shape of the guide groove is rectangular, rounded rectangular, or trapezoidal.

[0021] In one embodiment of the present invention, the flow channel is a through hole that runs through the upper and lower sides of the lift limiter.

[0022] To achieve the above objectives, the present invention also provides a compressor including the aforementioned exhaust structure. The exhaust structure includes:

[0023] An exhaust valve seat, wherein the exhaust valve seat is provided with an exhaust port;

[0024] An exhaust valve plate, one end of which is fixedly mounted to the exhaust valve seat, and the other end which can move closer to or further away from the exhaust valve seat to open or close the exhaust port; the exhaust valve plate is provided with a diversion hole penetrating the exhaust valve plate, the diversion hole being offset from the exhaust port; and

[0025] A lift limiter is installed on the exhaust valve seat and located on the side of the exhaust valve plate opposite to the exhaust valve seat, in order to limit the opening range of the exhaust valve plate.

[0026] In the exhaust structure of this invention, one end of the exhaust valve plate is fixedly installed on the exhaust valve seat, while the other end can move closer to or further away from the exhaust valve seat to open or close the exhaust port of the exhaust valve seat. This allows the exhaust valve plate to close the exhaust port when the compressor is not discharging, preventing gas leakage. When the compressor is discharging, the exhaust valve plate is opened by the compressed gas discharged from the exhaust port, allowing the flow divider on the exhaust valve plate to connect with the gap between the exhaust valve plate and the exhaust valve seat. This enables a portion of the compressed gas to be discharged from the flow divider, preventing excessive compressed gas from generating eddies between the exhaust valve plate and the exhaust valve seat, thus reducing exhaust resistance. Furthermore, by increasing the exhaust channel on the exhaust valve plate while keeping the cross-sectional area of ​​the exhaust port unchanged, the flow velocity at the exhaust port is increased, thereby improving the compressor's operating efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of an embodiment of the exhaust structure of the present invention;

[0029] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0030] Figure 3 This is a schematic diagram of the structure of the exhaust valve seat in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the combined structure of the lift limiter and the exhaust valve plate in an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the exhaust valve plate in an embodiment of the present invention;

[0033] Figure 6 This is a top view of the exhaust valve plate in an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of different cross-sectional shapes of the diversion hole of the exhaust valve plate in the embodiments of the present invention;

[0035] Figure 8 This is a schematic diagram of the lift limiter in an embodiment of the present invention;

[0036] Figure 9 This is a cross-sectional view of the lift limiter in an embodiment of the present invention;

[0037] Figure 10 This is a cross-sectional view of an embodiment of the present invention in which the flow guide channel in the lift limiter has a through-hole structure;

[0038] Figure 11 This is a top view of the lift limiter in an embodiment of the present invention;

[0039] Figure 12 This is a schematic diagram of different cross-sectional shapes of the guide groove of the lift limiter in the embodiments of the present invention;

[0040] Figure 13 A comparison diagram of the airflow simulation at the center cross-section of an exhaust valve plate without a diversion orifice and an exhaust valve plate without a diversion orifice.

[0041] Explanation of icon numbers:

[0042] label name label name 100 exhaust valve seat 300 Lift limit switch 101 exhaust port 310 Connection part 110 Annular boss 320 Upward curve 200 exhaust valve plate 301 diversion channel 201 Diverter orifice 301a Guide channel 210 Fixing part 301b Guide hole 220 Cover section 400 rivet

[0043] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0045] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0046] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0047] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0048] This invention proposes an exhaust structure for use in compressors, aiming to reduce compressor exhaust resistance loss, increase exhaust outlet flow rate, and improve compressor operating efficiency.

[0049] In embodiments of the present invention, such as Figures 1 to 2 As shown, the exhaust structure includes an exhaust valve seat 100, an exhaust valve plate 200, and a lift limiter 300.

[0050] The exhaust valve seat 100 is provided with an exhaust port 101; one end of the exhaust valve plate 200 is fixedly installed on the exhaust valve seat 100, and the other end can move close to or away from the exhaust valve seat 100 to open or close the exhaust port 101; the exhaust valve plate 200 is provided with a diversion hole 201 that passes through the exhaust valve plate 200, and the diversion hole 201 is offset from the exhaust port 101; the lift limiter 300 is installed on the exhaust valve seat 100 and is located on the side of the exhaust valve plate 200 away from the exhaust valve seat 100, so as to limit the opening range of the exhaust valve plate 200.

[0051] The exhaust structure in this embodiment is applied in a compressor. An exhaust valve seat 100 has an exhaust port 101, and an exhaust valve plate 200 is provided on the exhaust valve seat 100. One end of the exhaust valve plate 200 is fixedly connected to the exhaust valve seat 100, and the other end can move relative to the exhaust valve seat 100 to open or close the exhaust port 101. During compressor operation, the compressed high-temperature, high-pressure gas can force open the exhaust valve plate 200 that is closing the exhaust port 101 to achieve the exhaust function. When the compressor finishes exhausting, the exhaust valve plate 200 moves towards the exhaust valve seat 100 to close the exhaust port 101, preventing external air from entering the compressor cylinder and ensuring a sealing effect. A lift limiter 300 is provided on the side of the exhaust valve plate 200 away from the exhaust valve seat 100. This lift limiter 300 is used to limit the opening range of the exhaust valve plate 200 to prevent the exhaust valve plate 200 from deforming excessively due to gas impact. In this embodiment, a diversion hole 201 is provided on the exhaust valve plate 200, penetrating the exhaust valve plate 200. During the compressor's exhaust process, the exhaust valve plate 200 is opened to a certain degree by the compressed air. Part of the compressed gas coming out of the exhaust port 101 is discharged through the gap between the exhaust valve plate 200 and the exhaust valve seat 100, while another part can pass through the diversion hole 201 and be discharged away from the exhaust valve seat 100. This avoids excessive compressed gas generating eddies between the exhaust valve plate 200 and the exhaust valve seat 100, reducing exhaust resistance. At the same time, after the compressed gas impacts the exhaust valve plate 200, it escapes along both sides of the exhaust valve plate 200, causing a portion of the compressed gas to be discharged through the diversion hole 201. With the cross-sectional area of ​​the exhaust port 101 remaining unchanged, the exhaust passage on the exhaust valve plate 200 is increased, thereby increasing the effective flow area of ​​the compressed gas, reducing wind resistance, and increasing the flow velocity at the exhaust port 101, thus improving the compressor's working efficiency.

[0052] The diverter orifice 201 is offset from the exhaust port 101, ensuring that the diverter orifice 201 does not communicate with the exhaust port 101 when the exhaust valve plate 200 closes it. This prevents gas leakage from the compression cylinder when the compressor is not discharging gas, and also prevents external air from entering the compression cylinder. The location of the diverter orifice 201 can be determined based on actual conditions. For example, the diverter orifice 201 can be located near the fixed end of the exhaust valve plate 200, or it can be located away from the fixed end of the exhaust valve plate 201. The specific location is not limited here, as long as a portion of the compressed gas exiting the exhaust port 101 can be discharged through the diverter orifice 201 during compressor discharge, and the diverter orifice 201 blocks gas leakage when the compressor is not discharging gas.

[0053] Understandably, when the compressor is not discharging, the discharge valve plate 200 is fitted against the discharge valve seat 100 to seal the discharge port 101, and the diverter hole 201 is fitted against the wall of the discharge valve seat 100. At this time, the diverter hole 201 is blocked and no discharge is possible. When the compressor is discharging, the end of the discharge valve plate 200 that seals the discharge port 101 is opened by the compressed gas. At this time, the end of the discharge valve plate 200 away from the fixed end deforms in a direction away from the discharge valve seat 100, causing the diverter hole 201 to move away from the wall of the discharge valve seat 100. This allows the gap between the diverter hole 201 and the discharge valve plate 200 and the discharge valve seat 100 to open, thereby allowing some compressed gas to be discharged from the diverter hole 201, achieving the purpose of reducing turbulence and increasing the discharge area.

[0054] In practical applications, the cross-sectional shape of the diversion orifice 201 can be determined according to the actual situation, referring to... Figure 7 The shape of the diversion orifice 201 can be rounded rectangle, ellipse, trapezoid, or multi-hole shape, etc. The shape of the diversion orifice 201 can be reasonably designed according to the actual size of the exhaust valve plate 200, with the ultimate goal of ensuring the flow rate while also considering the reliability of the exhaust valve plate 200. The number of diversion orifices 201 can also be determined according to the actual situation, such as one, two, or more.

[0055] In practical applications, refer to Figure 13 By comparing the airflow simulation diagrams of the center cross-sections of exhaust valve plates 200 with and without diversion holes 201 under the same conditions (such as the same compressor specifications, the same compression frequency, and the same motor power), it can be seen that the exhaust valve plate 200 with diversion holes 201 (such as...) has a lower airflow rate than the exhaust valve plate 200 without diversion holes 201. Figure 13 Compared to the exhaust valve plate 300 without a diversion orifice 201 (as shown in Figure g), Figure 13 The eddy phenomenon in Figure f is somewhat reduced and the eddy intensity is somewhat decreased.

[0056] In the exhaust structure of this invention, one end of the exhaust valve plate 200 is fixedly installed on the exhaust valve seat 100, and the other end can move closer to or further away from the exhaust valve seat 200 to open or close the exhaust port 101 of the exhaust valve seat 100. This allows the exhaust valve plate 200 to close the exhaust port 101 when the compressor is not discharging, preventing gas leakage. When the compressor is discharging, the exhaust valve plate 200 is opened by the compressed gas discharged from the exhaust port 101, making the flow divider hole 201 on the exhaust valve plate 200 and the gap between the exhaust valve plate 200 and the exhaust valve seat 100 open. This allows a portion of the compressed gas to be discharged from the flow divider hole 201, preventing excessive compressed gas from generating eddies between the exhaust valve plate 200 and the exhaust valve seat 100, thus reducing exhaust resistance. Furthermore, by increasing the exhaust passage on the exhaust valve plate 200 without changing the cross-sectional area of ​​the exhaust port 101, the flow velocity at the exhaust port 101 is increased, thereby improving the compressor's operating efficiency.

[0057] In one embodiment of the present invention, reference is made to... Figures 1 to 7 The end of the exhaust valve plate 200 that is fixedly connected to the exhaust valve seat 100 is defined as the fixing part 210, and the part of the exhaust valve plate 200 that covers the exhaust port 101 is defined as the sealing part 220. The diversion hole 201 is located between the sealing part 220 and the fixing part 210.

[0058] Understandably, when the exhaust valve plate 200 closes the exhaust port 101, the exhaust valve plate 200 is abutting against the exhaust valve seat 100. When the compressor discharges, the portion of the exhaust valve plate 200 corresponding to the exhaust port 101 is opened by the compressed gas discharged from the exhaust port 101. At this time, the exhaust valve plate 200 deforms, the fixing part 210 remains fixedly connected to the exhaust valve seat 100, and the sealing part 220 is pushed by the compressed gas to a position spaced apart from the exhaust valve seat 100. That is, the gap between the exhaust valve plate 200 and the exhaust valve seat 100 gradually increases from the fixing part 210 toward the sealing part 220. At this time, the compressed gas discharged from the exhaust port 101 impacts the exhaust valve plate. After 200, the airflow is more easily discharged towards the gap between the larger sealing portion 220 and the exhaust valve seat 100, while the airflow on the side of the fixed portion 210 with a smaller gap from the exhaust valve seat 100 is not easy to flow out. As a result, the airflow is more likely to generate vortices near the fixed portion 210. Based on this, in this embodiment, the diversion hole 201 is set between the sealing portion 220 and the fixed portion 210, so that the airflow that escapes between the sealing portion 220 and the fixed portion 210 can be quickly discharged from the diversion hole 201. Compared with setting the diversion hole 201 on the side of the sealing portion 220 away from the fixed portion 210, the generation of vortices can be further reduced and the exhaust resistance can be reduced.

[0059] In one embodiment of the present invention, reference is made to... Figure 1 and Figure 2 as well as Figures 8 to 12 The lift limiter 300 is provided with a flow guide channel 301 that penetrates the surface of the lift limiter 300 near the exhaust valve plate 200 and the surface away from the exhaust valve plate 200, and the flow guide channel 301 is connected to the diversion hole 201.

[0060] The lift limiter 300 is located on the side of the exhaust valve plate 200 opposite to the exhaust valve seat 100. Its purpose is to limit the opening of the exhaust valve plate 200 when the compressor is discharging, preventing excessive deformation of the exhaust valve plate 200 and ensuring its service life. Understandably, when the compressor is not discharging, the exhaust valve plate 200 closes the exhaust port 101. The lift limiter 300 is spaced apart from the exhaust valve plate 200. When the compressor is discharging, the sealing part 220 of the exhaust valve plate 200 is opened a certain distance by the compressed gas (the sealing part 220 is positioned between the lift limiter 300 and the exhaust valve seat 100). Gas between the exhaust valve plate 200 and the exhaust valve seat 100 can flow from the diversion hole 201 to the gap between the lift limiter 300 and the exhaust valve plate 200 and be discharged. When the compressed gas... When the cap 220 is brought to contact with the lift limiter 300, the side of the diversion hole 201 away from the exhaust valve seat 100 contacts the lift limiter 300. In this embodiment, a guide channel 301 is provided on the lift limiter 300, which passes through the lift limiter 300 and is connected to the diversion hole 201, thereby forming an airflow channel that connects the exhaust port 101, the diversion hole 201 and the guide channel 301, so that compressed gas can be discharged from the exhaust port 101, the diversion hole 201 and the guide channel 301 in sequence.

[0061] In practical applications, the structure of the flow channel 301 of the lift limiter 300 can be determined according to the actual situation. For example, it can be a through hole structure, a guide groove + through hole structure, or the lift limiter 300 can be set as a hollow structure.

[0062] In one embodiment, reference is made to Figure 10 The flow channel 301 is a through hole structure that runs through the upper and lower sides of the lift limiter 300. At this time, the flow channel 301 can be set directly to correspond to the position of the diversion hole 201, so that the airflow flows out from the diversion hole 201 and is discharged directly from the flow channel 301, further reducing wind resistance.

[0063] In one embodiment, reference is made to Figure 1 and Figure 2 as well as Figure 8 and Figure 9The flow channel 301 includes a flow groove 301a communicating with the flow divider 201 and a flow guide hole 301b communicating with the flow groove 301a. The flow groove 301a is located on the surface of the lift limiter 300 near the exhaust valve plate 200, and the flow guide hole 301b penetrates the upper and lower sides of the lift limiter 300 and is located above the exhaust port 101. In this embodiment, the flow channel 301 is formed by the flow groove 301a and the flow guide hole 301b communicating. At this time, the exhaust port 101, the flow divider 201, the flow groove 301a and the flow guide hole 301b are connected to form an airflow channel. The airflow flowing out of the exhaust port 101 passes through the flow divider 201, the flow groove 301a and the flow guide hole 301b in sequence and is discharged.

[0064] Understandably, when the compressor discharges, the cover 220 is impacted by the airflow and moves to abut against the lift limiter 300. By setting the guide hole 301b above the exhaust port 101, the impact contact area between the cover 220 and the lift limiter 300 is reduced, thereby reducing the impact between the cover 220 and the lift limiter 300, which in turn reduces the impact noise between the exhaust valve plate 200 and the lift limiter 300. Meanwhile, since the diversion hole 201 is located between the cover part 220 and the fixing part 210, and the guide hole 301b is located above the exhaust port 101, the guide groove 301a is set on the surface of the lift limiter 300 near the exhaust valve plate 200. At least part of the guide groove 301a overlaps with the diversion hole 201. At the same time, the guide groove 301a extends along the length direction of the lift limiter 300 to the guide hole 301b to ensure the conduction function between the diversion hole 201 and the guide hole 301b.

[0065] Furthermore, the guide groove 301a extends along the length of the lift limiter 300, which further reduces the contact area between the lift limiter 300 and the exhaust valve plate 200, reduces the impact area between the two, reduces wear between the two, and extends the service life of the exhaust valve plate 200.

[0066] In practical applications, refer to Figure 12 The cross-sectional shape of the flow guide 301a can be determined according to the actual situation, such as a rectangle, a rounded rectangle, or a trapezoid. The selection of the shape of the flow guide 301a of the lift limiter 300 can be reasonably designed by comprehensively considering the area of ​​the diversion hole 201 of the exhaust valve plate 200 and its own structural size. The ultimate goal is to ensure the flow rate while taking into account the reliability of the lift limiter 300.

[0067] In one embodiment of the present invention, reference is made to... Figure 1 and Figure 2 as well as Figures 8 to 12The lift limiter 300 includes a connecting part 310 and an upturned part 320. The connecting part 310 and the fixing part 210 of the exhaust valve plate 200 are fixedly installed on the exhaust valve seat 100 by rivets 400. The upturned part 320 is correspondingly provided with the cover part 220, and the upturned part 320 is upturned in a direction away from the exhaust valve seat 100. The guide hole 301b is located in the upturned part 320, and the guide groove 301a is located on the side of the guide hole 301b near the connecting part 310.

[0068] This embodiment illustrates the structure of the lift limiter 300. The lift limiter 300 has a connecting portion 310 corresponding to the fixing portion 210 of the exhaust valve plate 200, and an upward-curving portion 320 corresponding to the sealing portion 220. The connecting portion 310 and the fixing portion 210 are fixedly installed to the exhaust valve seat 100 by rivets 400, ensuring the reliable connection between the lift limiter 300, the exhaust valve plate 200, and the exhaust valve seat 100. The upward-curving portion 320 curves away from the exhaust valve seat 100, creating sufficient space between the upward-curving portion 320 and the exhaust valve seat 100 for the sealing portion 220 to move. Understandably, in the height direction of the exhaust structure, the upturned part 320 extends upward in an arc shape, making the surface of the lift limiter 300 facing the exhaust valve plate 200 arc-shaped. This allows it to better match the shape of the exhaust valve plate 200 after it is deformed by the compressed gas, reducing the impact wear between the two. At the same time, it allows the airflow that hits the exhaust valve plate 200 to be discharged along the wall of the exhaust valve plate 200, reducing the generation of turbulence.

[0069] Optionally, the guide hole 301b is located on the upturned portion 320, and the guide groove 301a is located on the side of the guide hole 301b near the connecting portion 310, so that the guide groove 301a connects the diversion hole 201 and the guide hole 301b, thereby allowing the airflow located on the side of the exhaust port 101 near the fixing portion 210 to flow smoothly out from the diversion hole 201, the guide groove 301a and the guide hole 301b.

[0070] In one embodiment of the present invention, reference is made to... Figures 6 to 11 When the exhaust valve plate 200 closes the exhaust port 101, the plane on the upper surface of the exhaust valve plate 200 is defined as the first projection plane. In the projection of the lift limiter 300 on the first projection plane, the distance between the end of the guide groove 301a away from the guide hole 301b and the center of the guide hole 301b is L3, the distance between the end of the diversion hole 201 away from the cover part 220 and the center of the cover part 220 is L2, and the distance between the end of the diversion hole 201 close to the cover part 220 and the center of the cover part 220 is L1, satisfying 0.5(L2-L1)≤L3≤L2.

[0071] In this embodiment, on the first projection plane, the distance L3 between the end of the guide channel 301a away from the center of the guide hole 301b and the center of the guide hole 301b is the farthest distance between the guide channel 301a and the center of the guide hole 301b. The distance L2 between the end of the diversion hole 201 away from the center of the cover part 220 and the center of the cover part 220 is the farthest distance between the diversion hole 201 and the center of the cover part 220. The distance L1 between the end of the diversion hole 201 close to the center of the cover part 220 and the center of the cover part 220 is the closest distance between the diversion hole 201 and the center of the cover part 220. Then, L2-L1 is the opening length of the diversion hole 201 in the length direction. By satisfying 0.5(L2-L1)≤L3≤L2 for L1, L2, and L3, both the airflow of the lift limiter 300 and the structural strength and reliability of the lift limiter 300 are guaranteed.

[0072] In one embodiment of the present invention, reference is made to... Figures 6 to 11 In the thickness direction of the lift limiter 300, the depth of the end of the guide groove 301a away from the guide hole 301b is defined as H2, the depth of the end of the guide groove 301a close to the guide hole 301b is defined as H1, and the thickness of the lift limiter 300 is defined as H3, satisfying H1≤H2≤H3.

[0073] Understandably, the depth of the guide groove 301a on the lift limiter 300 can remain constant along the curvature of the lift limiter 300 itself, or it can vary. The depth H2 at the end of the guide groove 301a furthest from the guide hole 301b is the inlet depth of the guide groove 301a, and the depth H1 at the end of the guide groove 301a closest to the guide hole 301b is the outlet depth of the guide groove 301a. The thickness H3 of the lift limiter 300 satisfies H1≤H2≤H3, ensuring both the airflow rate and the structural strength and reliability of the lift limiter 300.

[0074] Optionally, when H1=H2=H3, both the guide groove 301a and the guide hole 301b are through holes that penetrate the upper and lower sides of the lift limiter 300.

[0075] In one embodiment of the present invention, reference is made to... Figures 1 to 7 The exhaust valve seat 100 has an annular boss 110 on the outer periphery of the exhaust port 101. When the cover part 220 closes the exhaust port 101, the exhaust valve plate 200 is sealed to the annular boss 110.

[0076] In this embodiment, to ensure the sealing effect of the exhaust structure when the compressor is not venting, an annular boss 110 is provided on the outer periphery of the exhaust port 101. The exhaust valve plate 200 abuts against the annular boss 110 to achieve a sealing effect, preventing gas leakage. It can be understood that the annular boss 110 surrounds the outer periphery of the exhaust port 101 and protrudes from the upper surface of the exhaust valve seat 100. When the exhaust valve plate 200 is sealed to the annular boss 110, the exhaust valve plate 200 can completely seal the outer periphery of the exhaust port 101, ensuring a better gas leakage prevention effect.

[0077] In practical applications, the surface of the annular boss 110 away from the exhaust valve seat 100 can be set as an arc surface. When the compressor exhausts, the exhaust valve plate 200 disengages from the annular boss 110. At this time, the arc surface of the annular boss 110 is smoother than the right-angled surface structure, which plays a certain guiding role for the compressed gas and can reduce the generation of eddies and reduce noise.

[0078] In one embodiment, reference is made to Figures 1 to 7 Let d1 be the diameter of the exhaust port 101, and d2 be the inner diameter of the contact area between the annular boss 110 and the exhaust valve plate 200, satisfying d2-d1>0.6mm. It can be understood that the annular boss 110 surrounds the outer circumference of the exhaust port 101. When the exhaust valve plate 200 covers the annular boss 110, the exhaust valve plate 200 and the upper surface of the annular boss 110 are in sealed contact. When the upper surface of the annular boss 110 is flat, the contact area between the exhaust valve plate 200 and the annular boss 110 is an annular contact surface, and d2 is the inner diameter of the annular contact surface. When the upper surface of the annular boss 110 is curved, the contact area between the exhaust valve plate 200 and the annular boss 110 is an annular contact line, and d2 is the diameter of the annular contact line. The requirement that d2-d1>0.6mm ensures the spacing between the annular boss 110 and the exhaust port 101, thereby guaranteeing the sealing effect of the exhaust valve plate 200 on the exhaust port 101.

[0079] In practical applications, the annular boss 110 can be configured as a cylindrical structure. In this case, the inner diameter d2 of the contact area between the annular boss 110 and the exhaust valve plate 200 is the inner diameter of the annular boss 110. Optionally, the dimensions d2-d1 can be determined according to the actual situation, such as 0.61mm, 0.63mm, 0.65mm, 0.68mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1mm, etc.

[0080] Furthermore, when the exhaust valve plate 200 closes the exhaust port 101, the center of the cover portion 220 is collinear with the central axis of the exhaust port 101. The distance between the end of the diversion hole 201 near the cover portion 220 and the center of the cover portion 220 is defined as L1, which satisfies L1 > 0.5d2.

[0081] Understandably, when the exhaust valve plate 200 closes the exhaust port 101, the exhaust valve plate 200 is sealed to the upper surface of the annular boss 110. At this time, the center of the cover portion 220 is collinear with the central axis of the annular boss 110. By ensuring that the distance L1 between the end of the diversion hole 201 near the cover portion 220 and the center of the cover portion 220 and the inner diameter d2 of the contact area between the annular boss 110 and the exhaust valve plate 200 satisfies L1 > 0.5d2, there is no overlapping area between the diversion hole 201 and the annular boss 110. The diversion hole 201 and the annular boss 110 are completely offset. Thus, when the compressor is not discharging, the diversion hole 201 and the exhaust port 101 are blocked, and the airflow will not leak from the diversion hole 201, ensuring a better sealing effect.

[0082] In one embodiment of the present invention, reference is made to... Figures 1 to 7 The direction from the fixing part 210 to the sealing part 220 of the exhaust valve plate 200 is defined as the length direction. On the cross section perpendicular to the length direction of the exhaust valve plate 200, the opening width of the diversion hole 201 is defined as W1, and the width of the exhaust valve plate 200 is defined as W2, satisfying W1 / W2≤0.5.

[0083] In this embodiment, the opening width of the diversion orifice 201 is limited. The opening width W1 of the diversion orifice 201 cannot be too large or too small. If the opening width W1 of the diversion orifice 201 is too large, the structural reliability of the exhaust valve plate 200 will deteriorate. If the opening width W1 of the diversion orifice 201 is too small, the airflow will decrease and the effect of reducing eddies will be worse. Therefore, the opening width W1 of the diversion orifice 201 and the width W2 of the exhaust valve plate 200 satisfy W1 / W2≤0.5, which can ensure both the gas flow and the structural reliability of the exhaust valve plate 200.

[0084] It should be noted that the opening width W1 of the diversion hole 201 is the opening width dimension on the cross-section (the cross-section perpendicular to the length direction of the exhaust valve plate 200) perpendicular to the center of the cover portion 220 of the exhaust valve plate 200 to the central axis of the rivet hole, and the width W2 of the exhaust valve plate 200 is the width dimension on the cross-section (the cross-section perpendicular to the length direction of the exhaust valve plate 200) perpendicular to the center of the cover portion 220 of the exhaust valve plate 200 to the central axis of the rivet hole. W1 and W2 are dimensions on the same cross-section.

[0085] Optionally, the ratio of the opening width W1 of the diversion hole 201 to the width W2 of the exhaust valve plate 200 can be determined according to the actual situation, such as 0.5, 0.4, 0.3, 0.2, etc., which can ensure the flow rate while taking into account the reliability of the exhaust valve plate 200.

[0086] The present invention also proposes a compressor, which includes an exhaust structure. The specific structure of the exhaust structure is as described in the above embodiments. Since the compressor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0087] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An exhaust structure, characterized in that, The exhaust structure, used in compressors, includes: An exhaust valve seat, wherein the exhaust valve seat is provided with an exhaust port; An exhaust valve plate, one end of which is fixedly mounted to the exhaust valve seat, and the other end which can move closer to or further away from the exhaust valve seat to open or close the exhaust port; the exhaust valve plate is provided with a diversion hole penetrating the exhaust valve plate, the diversion hole being offset from the exhaust port; and A lift limiter is installed on the exhaust valve seat and located on the side of the exhaust valve plate opposite to the exhaust valve seat, in order to limit the opening range of the exhaust valve plate; The lift limiter is provided with a flow guide channel that runs through the lift limiter. The flow guide channel includes a flow guide groove that communicates with the flow divider and a flow guide hole that communicates with the flow guide groove. The flow guide groove is located on the surface of the lift limiter near the exhaust valve plate. The flow guide hole runs through the upper and lower sides of the lift limiter and is located above the exhaust port. In the thickness direction of the lift limiter, the depth of the end of the guide groove away from the guide hole is defined as H2, and the depth of the end of the guide groove close to the guide hole is defined as H1, satisfying: H1≤H2; The exhaust valve seat is provided with an annular boss on the outer periphery of the exhaust port. When the exhaust valve plate closes the exhaust port, the exhaust valve plate is sealed to the annular boss. The diameter of the exhaust port is defined as d1, and the inner diameter of the contact area between the annular boss and the exhaust valve plate is defined as d2, satisfying d2-d1>0.6mm.

2. The exhaust structure as described in claim 1, characterized in that, The end of the exhaust valve plate that is fixedly connected to the exhaust valve seat is defined as the fixed part, and the part of the exhaust valve plate that covers the exhaust port is defined as the sealing part. The diversion hole is located between the sealing part and the fixed part.

3. The exhaust structure as described in claim 2, characterized in that, The lift limiter includes a connecting part and an upturned part. The connecting part and the fixing part of the exhaust valve plate are fixedly installed on the exhaust valve seat by rivets. The upturned part is upturned in a direction away from the exhaust valve seat and is correspondingly provided with the cover part. The guide hole is located in the upturned part.

4. The exhaust structure as described in claim 2 or 3, characterized in that, When the exhaust valve plate closes the exhaust port, the center of the cover portion is collinear with the central axis of the exhaust port. The distance between the end of the diversion hole near the cover portion and the center of the cover portion is defined as L1, which satisfies L1>0.5d2.

5. The exhaust structure as described in claim 2 or 3, characterized in that, The direction from the fixing part to the sealing part of the exhaust valve plate is defined as the length direction. On the cross-section perpendicular to the length direction of the exhaust valve plate, the opening width of the diversion hole is defined as W1, and the width of the exhaust valve plate is defined as W2, satisfying W1 / W2≤0.

5.

6. The exhaust structure as described in claim 2 or 3, characterized in that, When the exhaust valve plate closes the exhaust port, the plane containing the upper surface of the exhaust valve plate is defined as the first projection plane. In the projection of the lift limiter on the first projection plane, the distance between the end of the guide groove away from the guide hole and the center of the guide hole is L3, the distance between the end of the diversion hole away from the cover and the center of the cover is L2, and the distance between the end of the diversion hole close to the cover and the center of the cover is L1, satisfying 0.5(L2-L1)≤L3≤L2.

7. The exhaust structure as described in any one of claims 1 to 3, characterized in that, The thickness of the lift limiter is H3, which satisfies H2≤H3.

8. The exhaust structure as described in any one of claims 1 to 3, characterized in that, In a cross-section perpendicular to the thickness direction of the exhaust valve plate, the cross-sectional shape of the diversion hole is a rounded rectangle, an ellipse, a trapezoid, or a multi-hole shape; And / or, in a cross-section perpendicular to the thickness direction of the lift limiter, the cross-sectional shape of the guide groove is rectangular, rounded rectangular, or trapezoidal.

9. A compressor, characterized in that, Includes the exhaust structure as described in any one of claims 1 to 8.

Images