Medium compression assembly of rotor compressor core and core
By setting an air storage groove on the surface of the sliding vane, the problems of jamming and impact caused by excessive friction of the sliding vane are solved, the stable movement of the sliding vane and piston is achieved, the abnormal noise of the rotary compressor is reduced, and the user experience is improved.
Patent Information
- Application Number
- CN202520566017.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-27
AI Technical Summary
In existing rotary compressor cores, excessive friction between the vanes and the vane slots causes the vanes to jam, separate, and collide, resulting in air leakage between the intake chamber and the compression chamber, increasing abnormal noise, and affecting the user experience.
A gas storage groove is set on the surface of the slide to store gas medium to reduce the pressure difference on both sides of the slide. The gas medium in the gas storage groove balances the pressure of the slide, reduces friction, and prevents the slide from separating from and colliding with the piston.
It effectively reduces the friction between the slider and the slider slot, prevents the slider from getting stuck and impacted, avoids air leakage between the air intake chamber and the compression chamber, reduces abnormal noise from the movement, and improves the user experience.
Smart Images
Figure CN223781659U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of compressor technology, and in particular to a media compression assembly of a rotary compressor core and a core having the media compression assembly of the rotary compressor core. Background Technology
[0002] Rotary compressors utilize the compression of gas within the compressor core. Inside the cylinder of the compressor core, the vanes and piston remain in a stopped state, together dividing the cylinder chamber into an intake chamber connected to the intake port and a compression chamber connected to the exhaust port. As the piston rotates inside the cylinder, it cyclically increases the volume of the intake chamber and decreases the volume of the compression chamber, thereby changing the gas pressure in the intake and compression chambers. This causes the gas medium to be drawn into the intake chamber by the negative pressure in the intake chamber, while the gas medium in the compression chamber is compressed and discharged outside the compressor core.
[0003] In existing technologies, during operation, the pressure on the side of the vane near the intake port continuously decreases while the pressure on the side near the exhaust port continuously increases, creating a pressure difference between the two sides of the vane. Under the pressure of the gas medium, the vane presses against the groove wall of the vane slot. When the pressure between the vane and the groove wall of the vane slot is too high, the friction between them becomes excessive. This friction causes the vane to become stuck relative to the vane slot, preventing it from moving towards the piston in time to maintain a stop. This results in the vane continuously separating from and colliding with the piston, causing air leakage between the compressor's intake and compression chambers. This leads to very low compressor efficiency and increased abnormal noise within the compressor, negatively impacting the user experience of the rotary compressor. Utility Model Content
[0004] The purpose of this application is to reduce the frictional force experienced by the vane when it moves relative to the vane slot, to prevent the vane from separating from and colliding with the piston, thereby avoiding air leakage between the intake chamber and the compression chamber, and to reduce abnormal noise from the motor, thus improving the user experience of the rotary compressor.
[0005] To achieve the above objectives, this application provides a media compression assembly for a rotary compressor core.
[0006] This application further provides a rotor compressor core.
[0007] The media compression assembly of the rotary compressor core according to this application includes: a cylinder and a piston, the cylinder having a mounting hole extending axially along the cylinder, a chamber formed within the mounting hole, the piston disposed within the cylinder and adapted to rotate along the inner peripheral wall of the mounting hole, a vane slot provided on the inner peripheral wall of the mounting hole, the chamber communicating with an inlet and an outlet, the inlet and the outlet being spaced apart circumferentially along the cylinder, the vane slot being located between the inlet and the outlet; an elastic element and a slide, the slide being slidably disposed within the vane slot, and the slide... The slide plate extends into the chamber to abut against the piston. The elastic element is elastically deformable and disposed between the bottom of the slide plate and the slide plate slot. The slide plate has a first sidewall near the air inlet and a second sidewall near the exhaust port. The first sidewall and the second sidewall are arranged opposite to each other and spaced apart along the circumference of the cylinder. The first sidewall is provided with an air storage groove. The air storage groove communicates with the exhaust chamber of the rotary compressor and is mutually blocked from the chamber. The air storage groove is used to store gas medium to reduce the pressure difference between the first sidewall and the second sidewall.
[0008] According to the media compression assembly of the rotary compressor core of this application, by setting an air storage groove on the surface of the vane, the gas medium in the air storage groove can reduce the pressure difference between the first side wall and the second side wall of the vane, and prevent the vane from moving towards the first side wall and squeezing the groove wall of the vane slot. This can reduce the friction force on the vane during movement. Compared with the prior art, it can prevent the vane from getting stuck when moving towards the piston, thereby avoiding separation and collision between the vane and the piston, preventing cross-contamination between the intake chamber and the compression chamber, and reducing abnormal noise in the core, thus improving the user experience of the rotary compressor.
[0009] In some examples of this application, along the sliding direction of the slide, the slide has a first end away from the piston and a second end close to the piston, one end of the gas storage groove forms an opening on the end wall of the first end, and the other end extends toward the second end.
[0010] In some examples of this application, the slide is configured such that when the length of the slide extending into the cavity reaches the maximum extension length, the wall of the air storage groove near the mounting hole is radially spaced from the inner peripheral wall of the mounting hole.
[0011] In some examples of this application, the gas storage groove is located near the centerline of the slide plate, and / or the gas storage groove is located near the edge of the slide plate; wherein the centerline of the slide plate extends along the sliding direction of the slide plate.
[0012] In some examples of this application, the thickness of the sliding plate is H1, and the depth of the gas storage tank is H2. H1 and H2 satisfy the relationship: H2≤1 / 2H1.
[0013] In some examples of this application, the slide slot includes a guide groove and a limiting groove. The limiting groove and the mounting hole are radially spaced apart along the cylinder. The guide groove communicates between the mounting hole and the limiting groove. The limiting groove is used to limit the elastic element, and the guide groove is used to guide the slide. The width of the limiting groove is greater than the width of the guide groove. On the side of the slide near the air inlet, a first clearance slope is inclined between the groove wall of the guide groove and the groove wall of the limiting groove, and / or, on the side of the slide near the exhaust port, a second clearance slope is inclined between the groove wall of the guide groove and the groove wall of the limiting groove.
[0014] In some examples of this application, the sliding plate is provided with the avoidance slope on both the side near the air inlet and the side near the exhaust outlet, and the inclination angle between the first avoidance slope and the groove wall of the guide groove is smaller than the inclination angle between the second avoidance slope and the groove wall of the guide groove.
[0015] In some examples of this application, along the radial direction of the cylinder, the distance between the edge of the first clearance slope near the guide groove and the inner wall of the mounting hole is L1, and the distance between the edge of the second clearance slope near the guide groove and the inner wall of the mounting hole is L2. L1 and L2 satisfy the relationship: L1 < L2.
[0016] In some examples of this application, the distance L1 between the edge of the first clearance slope near the guide groove and the inner wall of the mounting hole, and the distance L2 between the edge of the second clearance slope near the guide groove and the inner wall of the mounting hole, satisfy the following relationships: 3mm≤L2-L1≤10mm; 12.9mm≤L2≤30mm.
[0017] The rotor compressor core according to this application includes: a medium compression assembly, the medium compression assembly being the aforementioned medium compression assembly; a drive shaft extending into the cylinder and passing through the piston, the drive shaft being used to drive the piston to rotate along the inner peripheral wall of the mounting hole; and an end cover assembly including at least one end cover, the end cover being disposed on the axial end wall of the cylinder along the axial direction of the cylinder, the end cover being used to cover the mounting hole, and each end cover being provided with a support bearing, the support bearing being used to support the drive shaft.
[0018] According to the rotor compressor core of this application, the core is disposed inside the rotor compressor and is provided with a medium compression assembly. By providing an air storage groove on the surface of the vane of the medium compression assembly, the gas medium in the air storage groove can reduce the pressure between the vane and the groove wall of the vane slot, thereby reducing the friction force on the vane during movement. Compared with the prior art, it can prevent the vane from getting stuck when moving towards the piston, thereby minimizing the separation and impact between the vane and the piston, preventing air leakage between the intake chamber and the compression chamber, and reducing abnormal noise in the core, thus improving the user experience of the rotor compressor. Attached Figure Description
[0019] Figure 1 This is a top view of the media compression assembly according to an embodiment of this application when the length of the slide extending into the cavity reaches the maximum extension length;
[0020] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;
[0021] Figure 3 This is a top view of the media compression assembly according to an embodiment of this application when the length of the slide extending into the cavity reaches the minimum extension length;
[0022] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle;
[0023] Figure 5 This is a front view of a first embodiment of the slider in this application;
[0024] Figure 6 This is a top view of a first embodiment of the slider in this application;
[0025] Figure 7 This is a front view of a second embodiment of the slider in this application;
[0026] Figure 8 This is a top view of a second embodiment of the slider in this application.
[0027] In the diagram, 100 represents the media compression component;
[0028] 1. Cylinder; 11. Mounting hole; 12. Chamber; 121. Intake chamber; 122. Compression chamber; 13. Sliding vane slot; 131. Guide groove; 132. Limiting groove; 133. First clearance slope; 134. Second clearance slope; 14. Inlet;
[0029] 2. Piston; 3. Elastic element;
[0030] 4. Sliding vane; 41. First sidewall; 42. Second sidewall; 43. Gas storage tank; 44. Clearance groove. Detailed Implementation
[0031] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.
[0032] like Figures 1-8 As shown in the illustration, this application discloses a medium compression assembly 100 for a rotary compressor core. The medium compression assembly 100 is disposed within the core, which is located inside the rotary compressor. The rotary compressor utilizes the core to compress a gaseous medium. It should be noted that the gaseous medium can be a refrigerant or other types of gas, and the rotary compressor can be applied to refrigeration systems or gas systems. Furthermore, the rotary compressor also includes a closed housing, with the core installed within the housing. The cavity between the core and the housing forms the exhaust chamber of the rotary compressor, through which the gaseous medium compressed by the core is discharged to the outside of the rotary compressor.
[0033] According to an embodiment of this application, a medium compression assembly 100 includes a cylinder 1, a piston 2, an elastic element 3, and a slide 4. The cylinder 1 has a mounting hole 11 extending axially along the cylinder 1. A chamber 12 is formed within the mounting hole 11. The piston 2 is disposed within the cylinder 1 and adapted to rotate along the inner peripheral wall of the mounting hole 11, wherein the outer diameter of the piston 2 is smaller than the diameter of the mounting hole 11 to ensure that the cylinder 1 has sufficient space to accommodate the gas medium.
[0034] The inner peripheral wall of the mounting hole 11 is provided with a sliding plate slot 13, which extends radially along the cylinder 1. The chamber 12 is connected to an air inlet 14 and an exhaust port, which are spaced apart circumferentially along the cylinder 1. The sliding plate slot 13 is located between the air inlet 14 and the exhaust port. In some embodiments, both the air inlet 14 and the exhaust port are located on the inner peripheral wall of the mounting hole 11. In other embodiments, at least one of the air inlet 14 and the exhaust port is located on other components of the movement, such as on the end cap of the movement. Both the air inlet 14 and the exhaust port connect the chamber 12 to the outside of the movement. The air inlet 14 allows the gas medium to flow from outside the movement into the chamber 12, and the exhaust port allows the compressed gas medium to flow from the chamber 12 out of the movement.
[0035] like Figure 1 , Figure 3As shown, the slide plate 4 is slidably disposed in the slide plate slot 13, and the slide plate 4 extends into the chamber 12 to stop against the piston 2. The slide plate 4 and the piston 2 together divide the chamber 12 to form an intake chamber 121 and a compression chamber 122. The intake chamber 121 is connected to the intake port 14, and the compression chamber 122 is connected to the exhaust port. The piston 2 increases the volume of the intake chamber 121 and decreases the volume of the compression chamber 122 so that the medium compression assembly 100 continuously draws in and compresses the gas medium. After each medium compression cycle, the piston 2 can reset the volume of the intake chamber 121 and the compression chamber 122 to ensure that the medium compression cycle can be repeated.
[0036] The elastic element 3 is elastically deformable and disposed between the bottom of the slide plate 4 and the slide plate slot 13, wherein, for example... Figure 1 , Figure 3 As shown, the elastic element 3 can be a helical spring. When the piston 2 moves close to the slide plate 4, the piston 2 drives the slide plate 4 to slide into the slide plate slot 13. At this time, the slide plate 4 squeezes the helical spring. The helical spring generates elastic force after being compressed. When the piston 2 moves away from the slide plate 4, the elastic force of the elastic element 3 can drive the slide plate 4 to move out of the slide plate slot 13 so that the slide plate 4 and the piston 2 can maintain a stop state.
[0037] like Figures 1-4 As shown, the vane 4 has a first sidewall 41 near the air inlet 14 and a second sidewall 42 near the exhaust port. The first sidewall 41 and the second sidewall 42 of the vane 4 are arranged opposite to each other and spaced apart along the circumference of the cylinder 1. The first sidewall 41 of the vane 4 is subjected to the gas pressure in the air inlet chamber 121, and the second sidewall 42 of the vane 4 is subjected to the gas pressure in the compression chamber 122. The first sidewall 41 of the vane 4 is provided with an air storage groove 43, which is connected to the exhaust chamber of the rotary compressor. The exhaust chamber is the exhaust chamber mentioned above, and the air storage groove 43 is mutually blocked from the chamber 12. The air storage groove 43 is used to store gas medium to reduce the pressure difference between the first sidewall 41 and the second sidewall 42 of the vane 4.
[0038] The gas storage tank 43 is connected to the vane slot 13, and the outer peripheral wall of the cylinder 1 is provided with a connecting port, which is connected to the vane slot 13. That is, the vane slot 13 is connected to the exhaust chamber through the connecting port. This allows the gas storage tank 43 and the exhaust chamber to be indirectly connected. The gas medium compressed by the mechanism in the exhaust chamber can flow into the gas storage tank 43 along the vane slot 13. At this time, the gas pressure in the gas storage tank 43 is about the exhaust pressure of the rotary compressor, and the gas pressure in the gas storage tank 43 is greater than the gas pressure in the intake chamber 121. The gas medium stored in the gas storage tank 43 can increase the average pressure of the gas medium on the first side wall 41 of the vane 4, thereby increasing the pressure of the gas medium on the first side wall 41 of the vane 4, and thus reducing the pressure difference between the first side wall 41 and the second side wall 42 of the vane 4. This design can minimize the risk of the slider 4 losing its balance during movement. The slider 4 is less likely to shift towards the first sidewall from the second sidewall, which can reduce the pressure between the first sidewall 41 of the slider 4 and the inner wall of the slider slot 13, thereby reducing the friction of the first sidewall 41 of the slider 4.
[0039] Furthermore, the gas storage tank 43 and the chamber 12 are mutually blocked, so the gas medium in the gas storage tank 43 cannot flow into the chamber 12, which can prevent the gas pressure in the chamber 12 from being affected and can also minimize the pressure drop in the gas storage tank 43.
[0040] Therefore, by setting an air storage groove 43 on the surface of the vane 4, the gas medium in the air storage groove 43 can reduce the pressure difference between the first side wall 41 and the second side wall 42 of the vane 4, and prevent the vane 4 from moving towards the first side wall 41 and squeezing the groove wall of the vane slot 13. This can reduce the friction force on the vane 4 when it moves. Compared with the prior art, it can prevent the vane 4 from getting stuck when it moves towards the piston 2, thereby avoiding the separation and collision between the vane 4 and the piston 2, preventing the air inlet chamber 121 and the compression chamber 122 from leaking air, and reducing abnormal noise in the core, thus improving the user experience of the rotary compressor.
[0041] like Figures 6-8As shown, in some embodiments of this application, along the sliding direction of the slide vane 4 (i.e., the radial direction of the cylinder 1), the slide vane 4 has a first end away from the piston 2 and a second end close to the piston 2. One end of the gas storage groove 43 forms an opening on the end wall of the first end of the slide vane 4. This arrangement makes it easier for the gas storage groove 43 to obtain the gas medium, thereby making it easier for the gas storage groove 43 to store the gas medium to balance the pressure difference between the first side wall 41 and the second side wall 42 of the slide vane 4. The other end of the gas storage groove 43 extends toward the second end of the slide vane 4. The gas storage groove 43 can occupy as much surface area as possible on the first side wall 41, thereby making the volume of the gas storage groove 43 larger, the gas storage groove 43 can store more gas medium, and the pressure difference between the first side wall 41 and the second side wall 42 can be smaller.
[0042] like Figure 1 , Figure 2 As shown, in some embodiments of this application, the slide 4 is configured such that when the length of the slide 4 extending into the chamber 12 reaches its maximum extension length, the groove wall of the air storage groove 43 near the mounting hole 11 and the inner peripheral wall of the mounting hole 11 are radially spaced apart along the cylinder 1. Specifically, when the centerline of the slide 4 intersects the central axis of the piston 2, the length of the slide 4 extending into the chamber 12 reaches its maximum or minimum extension length, and the centerline of the slide 4 extends along the sliding direction of the slide 4.
[0043] When the length of the slide plate 4 extending into the chamber 12 is at its maximum, the length of the part of the slide plate 4 located in the slide plate slot 13 is at its minimum. At this time, by setting the groove wall of the gas storage groove 43 and the inner peripheral wall of the mounting hole 11 at intervals, the gas medium is difficult to flow between the air inlet chamber 121 and the gas storage groove 43 through the gap between the slide plate 4 and the slide plate slot 13. This can prevent the gas from leaking into the gas storage groove 43, which would cause a decrease in the average pressure on the first side wall 41 of the slide plate 4. This can effectively reduce the pressure difference between the first side wall 41 and the second side wall 42 of the slide plate 4.
[0044] like Figure 2As shown, in some embodiments of this application, when the length of the slide plate 4 extending into the chamber 12 reaches the maximum extension length, the distance between the groove wall of the gas storage groove 43 near the mounting hole 11 and the inner peripheral wall of the mounting hole 11 is L3. L3 satisfies the relationship: 20mm≥L3≥2mm. That is to say, the minimum distance between the groove wall of the gas storage groove 43 and the inner peripheral wall of the mounting hole 11 is not less than 2mm and not more than 20mm. The gap between the slide plate 4 and the slide plate slot 13 can be fully sealed. This setting can further prevent gas from flowing between the gas storage groove 43 and the air inlet chamber 121. Furthermore, when the piston 2 rotates to other positions, the length of the portion of the slide plate 4 that extends into the chamber 12 is shorter and the length that extends into the slide plate slot 13 is longer. The distance between the wall of the gas storage groove 43 and the inner peripheral wall of the mounting hole 11 is greater than 2mm. In other words, when the piston 2 rotates to other positions, the gas storage groove 43 and the air intake chamber 121 are blocked, thereby preventing gas leakage from the gas storage groove 43.
[0045] like Figure 3 , Figure 4 As shown, in some specific embodiments of this application, the vane 4 is further configured such that when the length of the vane 4 extending into the chamber 12 reaches its minimum extension length, that is, when the length of the vane 4 extending into the vane slot 13 is at its maximum, the first end wall of the vane 4 and the bottom of the vane slot 13 are radially spaced apart along the cylinder 1. This arrangement allows for a sufficiently large accommodating space between the first end wall of the vane 4 and the bottom of the vane slot 13, enabling the compressed elastic element 3 to extend into the gap between the first end wall of the vane 4 and the bottom of the vane slot 13, thus preventing damage to the elastic element 3 due to excessive compression. Simultaneously, by preventing the vane 4 from contacting the bottom of the vane slot 13, it prevents the vane 4 from impacting the bottom of the vane slot 13 and generating abnormal noise, thereby further improving the user experience of the rotary compressor.
[0046] like Figure 4 As shown, further, when the piston 2 completes one compression cycle and the length of the slide 4 extending into the chamber 12 reaches the minimum extension length, the distance between the first end wall of the slide 4 and the bottom of the slide slot 13 is L4, which satisfies the relationship: L4≥0.1mm. Furthermore, the upper limit of the distance L4 between the first end wall of the slide 4 and the bottom of the slide slot 13 can be set according to the actual structural dimensions of the media compression assembly 100.
[0047] Furthermore, such as Figure 5 , Figure 7As shown, the first end wall of the slide plate 4 is provided with a relief groove 44. The relief groove 44 extends toward the second end of the slide plate 4. The relief groove 44 is used to avoid and position the elastic element 3. The relief groove 44 can prevent the elastic element 3 from slipping, thereby ensuring that the direction of the elastic force on the slide plate 4 is consistent, making the movement direction of the slide plate 4 more accurate and improving the working stability of the medium compression assembly 100.
[0048] In some embodiments of this application, such as Figure 5 , Figure 6 As shown, the gas storage tank 43 is positioned near the centerline of the sliding plate 4, or as... Figure 7 , Figure 8 As shown, the air storage groove 43 is located near the edge of the vane 4. In some other embodiments, the first sidewall 41 of the vane 4 is provided with multiple air storage grooves 43, some of which are located near the centerline of the vane 4, and others are located near the edge of the vane 4. The location of the air storage grooves 43 can be set according to the actual structure and size of the vane 4 and the operating conditions of the rotary compressor.
[0049] Furthermore, when the first sidewall 41 of the vane 4 is provided with multiple air storage slots 43, any two air storage slots 43 have the same structural dimensions, or at least two air storage slots 43 have different structural dimensions. Also, when the first sidewall 41 of the vane 4 is provided with multiple air storage slots 43, the multiple air storage slots 43 are symmetrically arranged on both sides of the centerline of the vane 4, or each air storage slot 43 is set at a suitable position on the first sidewall 41 of the vane 4 according to the actual operating conditions of the rotary compressor.
[0050] like Figure 6 , Figure 8 As shown, in some embodiments of this application, the thickness of the sliding plate 4 is H1, and the depth of the gas storage groove 43 is H2. H1 and H2 satisfy the relationship: H2≤1 / 2H1. This design can prevent the thickness of the sliding plate 4 at the gas storage groove 43 from being too thin, and can minimize the risk of the sliding plate 4 breaking under pressure when the medium compression assembly 100 is in operation, thereby improving the operational reliability of the medium compression assembly 100.
[0051] like Figure 2 , Figure 4 As shown, in some embodiments of this application, the slide slot 13 includes a guide groove 131 and a limiting groove 132. The limiting groove 132 and the mounting hole 11 are arranged radially apart along the cylinder 1. The guide groove 131 communicates between the mounting hole 11 and the limiting groove 132. The limiting groove 132 is used to limit the elastic member 3, and the guide groove 131 is used to guide the slide 4. The groove width of the limiting groove 132 is greater than the groove width of the guide groove 131.
[0052] On the side of the sliding vane 4 near the air inlet 14 ( Figure 4On the left side of the middle slide plate 4, a first clearance slope 133 is inclined between the groove wall of the guide groove 131 and the groove wall of the limiting groove 132, and / or, on the side of the slide plate 4 near the exhaust port ( Figure 4 On the right side of the middle slide 4, a second clearance slope 134 is inclined between the groove wall of the guide groove 131 and the groove wall of the limiting groove 132. The first clearance slope 133 and the second clearance slope 134 can be formed by removing part of the groove wall of the guide groove 131. By setting the first clearance slope 133 and the second clearance slope 134, the contact area between the slide 4 and the groove wall of the guide groove 131 can be reduced, thereby reducing the friction between the slide 4 and the groove wall of the guide groove 131, and further preventing the slide 4 from getting stuck and causing abnormal noise in the movement.
[0053] Furthermore, the gap between the first clearance slope 133 and the slide plate 4 can be used to store gas medium. Setting the first clearance slope 133 can make the gas storage space of the slide plate slot 13 on the side of the slide plate 4 near the air inlet 14 larger, and the gap between the first clearance slope 133 and the slide plate 4 is connected to the gas storage groove 43. The contact area between the gas medium in the slide plate slot 13 and the slide plate 4 is larger, which can further increase the gas pressure on the first side wall 41 of the slide plate 4, thereby further reducing the pressure difference between the first side wall 41 and the second side wall 42 of the slide plate 4, and further preventing abnormal noise from being generated in the rotary compressor.
[0054] Furthermore, when both the side of the slide plate 4 near the air inlet 14 and the side near the exhaust port are provided with clearance slopes, the gap volume between the first clearance slope 133 and the slide plate 4 should be larger than the gap volume between the second clearance slope 134 and the slide plate 4. The contact area between the first clearance slope 133 and the gas medium in the slide plate slot 13 is larger. This allows the pressure provided by the gas medium flowing into the slide plate slot 13 in the exhaust chamber within the gap between the first clearance slope 133 and the slide plate 4 to be greater than the pressure provided within the gap between the second clearance slope 134 and the slide plate 4. This further reduces the pressure difference between the first sidewall 41 and the second sidewall 42 of the slide plate 4.
[0055] like Figure 4As shown, when the connection between the first clearance slope 133 and the limiting groove 132, and the connection between the second clearance slope 134 and the limiting groove 132 are symmetrically arranged on both sides of the slide slot 13 along the width direction of the slide slot 13 (i.e., from the circumferential direction of the cylinder 1), the inclination angle between the first clearance slope 133 and the groove wall of the guide groove 131 is smaller than the inclination angle between the second clearance slope 134 and the groove wall of the guide groove 131. The size of the space enclosed by the first clearance slope 133 and the slide 4 is larger than the size of the space enclosed by the second clearance slope 134 and the slide 4. Furthermore, the size of the structural area of the first side wall 41 of the slide 4 opposite to the first clearance slope 133 is larger than the size of the structural area of the second side wall 42 opposite to the second clearance slope 134. This achieves the technical effect that the pressure provided by the gas medium in the gap between the first clearance slope 133 and the slide 4 is greater than the pressure provided in the gap between the second clearance slope 134 and the slide 4.
[0056] According to some specific embodiments of this application, the inclination angle between the first clearance slope 133 and the groove wall of the guide groove 131 is α, and the inclination angle between the second clearance slope 134 and the groove wall of the guide groove 131 is β. α and β satisfy the relationship: 0 < α < β < 45°. In some preferred embodiments, the inclination angle α between the first clearance slope 133 and the groove wall of the guide groove 131 can be set to 10°, and the inclination angle β between the second clearance slope 134 and the groove wall of the guide groove 131 can be set to 15°. Such settings can make the gap volume between the first clearance slope 133 and the slider 4 and the gap volume between the second clearance slope 134 and the slider 4 more suitable.
[0057] By ensuring that the inclination angle between the first clearance slope 133 and the groove wall of the guide groove 131, and the inclination angle between the second clearance slope 134 and the groove wall of the guide groove 131 meet the above-mentioned range, the size of the space enclosed by the first clearance slope 133 and the slider 4, and the size of the space enclosed by the second clearance slope 134 and the slider 4 can be more suitable, thereby reducing the pressure difference between the first side wall 41 and the second side wall 42 of the slider 4.
[0058] like Figure 2As shown, in some embodiments of this application, along the radial direction of cylinder 1, the distance between the edge of the first clearance slope 133 near the guide groove 131 and the inner wall of the mounting hole 11 is L1, and the distance between the edge of the second clearance slope 134 near the guide groove 131 and the inner wall of the mounting hole 11 is L2. L1 and L2 satisfy the relationship: L1 < L2. To ensure that the slider 4 meets the design requirements of the PV value in the reliability index, by setting the edge of the first clearance slope 133 near the guide groove 131 and the inner wall of the mounting hole 11 to be spaced apart, and the edge of the second clearance slope 134 near the guide groove 131 and the inner wall of the mounting hole 11 to be spaced apart, it can be ensured that when the slider 4 slides, both the first sidewall 41 and the second sidewall 42 have a sufficiently long contact area with the inner wall of the guide groove 131. It should be noted that the PV value of the slider 4 refers to the product of the pressure on the first sidewall 41 or the second sidewall 42 of the slider 4 and the average speed of the slider 4.
[0059] Furthermore, during the operation of the media compression assembly 100, the gas pressure in the compression chamber 122 is greater than the gas pressure in the intake chamber 121, and the gas load on the second sidewall 42 of the slide vane 4 is greater than the gas load on the first sidewall 41. The PV value requirement of the second sidewall 42 of the slide vane 4 is higher than the PV value of the first sidewall 41 of the slide vane 4. By making the distance L2 between the edge of the second clearance slope 134 near the guide groove 131 and the inner wall of the mounting hole 11 greater than the distance L1 between the edge of the first clearance slope 133 near the guide groove 131 and the inner wall of the mounting hole 11, the PV value requirement of the slide vane 4 can be met, thereby making the media compression assembly 100 more reliable.
[0060] Furthermore, in some embodiments of this application, the distance L1 between the edge of the first clearance slope 133 near the guide groove 131 and the inner wall of the mounting hole 11, and the distance L2 between the edge of the second clearance slope 134 near the guide groove 131 and the inner wall of the mounting hole 11 satisfy the following relationships: 3mm≤L2-L1≤10mm; 12.9mm≤L2≤30mm. This arrangement ensures that the gas pressure on the first sidewall 41 of the slide plate 4 is basically the same as the gas pressure on the second sidewall 42, thereby meeting the reliability requirements of the medium compression assembly 100.
[0061] Based on this, this application further discloses a rotor compressor core, which is disposed within the rotor compressor. According to an embodiment of this application, the core includes: a medium compression assembly 100, a drive shaft, and an end cover assembly. The medium compression assembly 100 is the same as the medium compression assembly 100 described in the above embodiment. The drive shaft extends into the cylinder 1 and passes through the piston 2. The drive shaft drives the piston 2 to rotate along the inner peripheral wall of the mounting hole 11. Specifically, the drive shaft can be constructed as a crankshaft. The drive shaft is connected to the motor of the rotor compressor. When the drive shaft is driven by the motor, it drives the piston 2 to rotate along the inner peripheral wall of the mounting hole 11. When the piston 2 rotates, it draws gaseous medium into the cylinder 1 of the core and discharges the compressed gaseous medium into the exhaust chamber outside the core.
[0062] The end cap assembly includes at least one end cap, which is disposed along the axial direction of the cylinder 1 on the axial end wall of the cylinder 1. In some specific embodiments, the end cap assembly includes two end caps. Along the axial direction of the cylinder 1, the cylinder 1 has two opposing axial end walls, one end cap being disposed on the outer side of one axial end wall of the cylinder 1, and the other end cap being disposed on the outer side of the other axial end wall of the cylinder 1. The end caps are used to cover the mounting hole 11, preventing gas medium in the chamber 12 from leaking out of the mechanism through the opening formed by the mounting hole 11 on the axial end wall of the cylinder 1. Each end cap is provided with a support bearing for supporting the drive shaft.
[0063] According to the embodiment of this application, the mechanism is disposed in a rotary compressor and is provided with a medium compression assembly 100. By providing an air storage groove 43 on the surface of the slide plate 4 of the medium compression assembly 100, the pressure difference on both sides of the slide plate 4 is reduced. The gas medium in the air storage groove 43 can reduce the pressure difference between the first side wall 41 and the second side wall 42 of the slide plate 4, and prevent the slide plate 4 from moving towards the first side wall 41 and causing it to squeeze the groove wall of the slide plate slot 13. This can reduce the friction force on the slide plate 4 when it moves. Compared with the prior art, it can prevent the slide plate 4 from getting stuck when it moves towards the piston 2, thereby avoiding the separation and collision of the slide plate 4 and the piston 2, preventing the air inlet chamber 121 and the compression chamber 122 from mixing, and reducing abnormal noise in the mechanism, thereby improving the user experience of the rotary compressor.
[0064] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.
Claims
1. A medium compression assembly for a rotary compressor core, characterized in that, include: A cylinder and a piston, the cylinder having a mounting hole extending axially along the cylinder, a chamber formed within the mounting hole, the piston disposed within the cylinder and adapted to rotate along the inner peripheral wall of the mounting hole, a sliding plate slot provided on the inner peripheral wall of the mounting hole, the chamber communicating with an air inlet and an exhaust port, the air inlet and the exhaust port being spaced apart circumferentially along the cylinder, and the sliding plate slot being located between the air inlet and the exhaust port; The cylinder comprises an elastic element and a sliding plate, the sliding plate being slidably disposed within the sliding plate slot and extending into the chamber to abut against the piston, the elastic element being elastically deformable and disposed between the sliding plate and the bottom of the sliding plate slot, the sliding plate having a first sidewall near the air inlet and a second sidewall near the exhaust port, the first sidewall and the second sidewall being circumferentially opposite to and spaced apart from each other, the first sidewall having an air storage groove communicating with the exhaust chamber of the rotary compressor, and the air storage groove being mutually blocked from the chamber, the air storage groove being used to store a gas medium to reduce the pressure difference between the first sidewall and the second sidewall.
2. The medium compression assembly of the rotary compressor core according to claim 1, characterized in that, Along the sliding direction of the slide, the slide has a first end away from the piston and a second end close to the piston, and one end of the gas storage groove forms an opening on the end wall of the first end, while the other end extends toward the second end.
3. The medium compression assembly of the rotary compressor core according to claim 2, characterized in that, The slide is configured such that when the length of the slide extending into the cavity reaches the maximum extension length, the wall of the air storage groove near the mounting hole is radially spaced from the inner peripheral wall of the mounting hole.
4. The medium compression assembly of the rotary compressor core according to claim 2, characterized in that, The gas storage tank is positioned close to the centerline of the sliding plate, and / or, The gas storage tank is located near the edge of the sliding plate; The centerline of the slider extends along the sliding direction of the slider.
5. The medium compression assembly of the rotary compressor core according to any one of claims 1-4, characterized in that, The thickness of the sliding plate is H1, and the depth of the gas storage tank is H2. H1 and H2 satisfy the relationship: H2≤1 / 2H1.
6. The medium compression assembly of the rotary compressor core according to claim 1, characterized in that, The slide slot includes a guide groove and a limiting groove. The limiting groove and the mounting hole are arranged radially apart along the cylinder. The guide groove is connected between the mounting hole and the limiting groove. The limiting groove is used to limit the elastic element. The guide groove is used to guide the slide. The width of the limiting groove is greater than the width of the guide groove. On the side of the slide near the air inlet, a first clearance slope is inclined between the groove wall of the guide groove and the groove wall of the limiting groove, and / or, On the side of the slide plate near the exhaust port, a second clearance slope is inclined between the groove wall of the guide groove and the groove wall of the limiting groove.
7. The medium compression assembly of the rotary compressor core according to claim 6, characterized in that, The sliding plate is provided with the avoidance slope on both the side near the air inlet and the side near the exhaust outlet. The inclination angle between the first avoidance slope and the groove wall of the guide groove is smaller than the inclination angle between the second avoidance slope and the groove wall of the guide groove.
8. The medium compression assembly of the rotary compressor core according to claim 7, characterized in that, Along the radial direction of the cylinder, the distance between the edge of the first clearance slope near the guide groove and the inner wall of the mounting hole is L1, and the distance between the edge of the second clearance slope near the guide groove and the inner wall of the mounting hole is L2. L1 and L2 satisfy the relationship: L1 < L2.
9. The medium compression assembly of the rotary compressor core according to claim 7, characterized in that, The distance L1 between the edge of the first clearance slope near the guide groove and the inner wall of the mounting hole, and the distance L2 between the edge of the second clearance slope near the guide groove and the inner wall of the mounting hole satisfy the following relationships: 3mm≤L2-L1≤10mm; 12.9mm≤L2≤30mm.
10. A rotor compressor core, characterized in that, include: A media compression assembly, wherein the media compression assembly is the media compression assembly according to any one of claims 1-9; A drive shaft extends into the cylinder and passes through the piston, the drive shaft being used to drive the piston to rotate along the inner peripheral wall of the mounting hole; An end cap assembly, comprising at least one end cap, wherein the end cap is disposed on the axial end wall of the cylinder along the axial direction of the cylinder, the end cap is used to cover the mounting hole, and each end cap is provided with a support bearing for supporting the drive shaft.