Compression structure for rotary compressor, rotary compressor, air conditioner

Abstract

The present invention provides a compression structure for a rotary compressor, a rotary compressor, and an air conditioner, which relate to the technical field of compressors and solve the technical problem in the prior art that the force exerted by the gas on the high-pressure side on the vane is much greater than the force exerted by the gas on the low-pressure side on the vane. The compression structure for a rotary compressor includes a flange having a guide channel and a vane having a stress-bearing slot hole, wherein the guide channel and the stress-bearing slot hole are connected, and the high-pressure refrigerant can flow to the stress-bearing slot hole through the guide channel, and the inner side wall of the stress-bearing slot hole is subjected to the combined force of the high-pressure refrigerant in a direction perpendicular to the vane toward the high-pressure side of the vane. The present invention is used to improve the stress condition of the vane to improve the performance of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compression structure for a rotary compressor, a rotary compressor and an air conditioner. Background Art

[0002] The rotary compressor is a new type of compressor. Its motor does not need to convert the rotary motion of the rotor into the reciprocating motion of the rolling piston. Instead, it directly drives the rotating rolling piston to rotate to complete the compression of the refrigerant vapor. The rolling piston of the rotary compressor is connected to the crankshaft, and the rolling piston is always in contact with the sliding vane. When the crankshaft drives the rolling piston to rotate in the cylinder, the rolling piston can drive the sliding vane to reciprocate in the sliding vane groove. The sliding vane divides the cylinder into a low-pressure side and a high-pressure side. When the compressor is working, the rolling piston squeezes the gas on the high-pressure side, and the gas enters the low-pressure side through the air inlet, and the gas in the high-pressure side is discharged from the cylinder through the air outlet.

[0003] The applicant has found that the prior art has at least the following technical problems:

[0004] When the compressor is working, the gas pressure on the high-pressure side is usually greater than the gas pressure on the low-pressure side, so the force exerted by the gas on the high-pressure side on the vane may be greater than the force exerted by the gas on the low-pressure side on the vane, which may affect the service life of the vane and reduce the reliability of the compressor. Summary of the invention

[0005] The object of the present invention is to provide a compression structure for a rotary compressor, a rotary compressor, and an air conditioner, so as to improve the force of the sliding vane and improve the reliability of the compressor. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a compression structure for a rotary compressor, comprising a flange having a guide channel and a sliding vane having a stress-bearing slot hole, wherein the guide channel and the stress-bearing slot hole are communicated, and high-pressure refrigerant can flow to the stress-bearing slot hole through the guide channel, and the inner side wall of the stress-bearing slot hole is subjected to the combined force of the high-pressure refrigerant in a direction perpendicular to the sliding vane toward the high-pressure side of the sliding vane.

[0008] Furthermore, the guide channel is provided on at least one of the flanges on the upper and lower sides of the sliding plate.

[0009] Furthermore, the guide channels are provided on the flanges on the upper and lower sides of the sliding plate, and the two guide channels are respectively connected to the corresponding stress-bearing slots on the sliding plate.

[0010] Furthermore, the circumferential side wall of the stress-bearing slot hole that is subjected to the force toward the high-pressure side of the sliding vane is the high-pressure side wall, the circumferential side wall of the stress-bearing slot hole that is subjected to the force toward the low-pressure side of the sliding vane is the low-pressure side wall, the bottom surface of the stress-bearing slot hole is subjected to the force toward the high-pressure side of the sliding vane, and the resultant force of the high-pressure side wall and the bottom surface of the stress-bearing slot hole subjected to the high-pressure refrigerant in a direction perpendicular to the sliding vane is greater than the resultant force of the low-pressure side wall subjected to the high-pressure refrigerant in a direction perpendicular to the sliding vane.

[0011] Furthermore, the stress-bearing slot hole is arranged to be inclined toward the high-pressure side of the sliding vane.

[0012] Furthermore, the acute angle range R between the axis of the stress-bearing slot and the horizontal plane is 0°<R<90°.

[0013] Furthermore, the circumferential side wall of the stress-bearing slot hole that is subjected to the force toward the high-pressure side of the sliding vane is the high-pressure side wall, the circumferential side wall of the stress-bearing slot hole that is subjected to the force toward the low-pressure side of the sliding vane is the low-pressure side wall, the bottom surface of the stress-bearing slot hole is subjected to the force toward the low-pressure side of the sliding vane, and the resultant force of the high-pressure refrigerant on the low-pressure side wall and the bottom surface of the stress-bearing slot hole in a direction perpendicular to the sliding vane is smaller than the resultant force of the high-pressure refrigerant on the high-pressure side wall in a direction perpendicular to the sliding vane.

[0014] Furthermore, the stress-bearing slot hole includes a first stress-bearing slot hole and a second stress-bearing slot hole, the first stress-bearing slot hole is connected to the guide channel and is inclined toward the high-pressure side of the sliding vane, the second stress-bearing slot hole is inclined toward the low-pressure side of the sliding vane, and the first stress-bearing slot hole is connected to the circumferential hole wall of the second stress-bearing slot hole.

[0015] Furthermore, the guide channel includes a vertical channel and a transverse channel connected to the vertical channel, the vertical channel is connected to the stress-bearing slot hole, and the transverse channel extends to the outer side surface of the flange.

[0016] A rotary compressor comprises the compression structure for the rotary compressor.

[0017] An air conditioner comprises the compression structure for a rotary compressor.

[0018] The present invention provides a compression structure for a rotary compressor. Due to the design of the guide channel on the flange and the stress-bearing slot hole on the sliding vane, the high-pressure refrigerant can flow into the stress-bearing slot hole, and since the inner side wall of the stress-bearing slot hole is subjected to the combined force of the high-pressure refrigerant in a direction perpendicular to the sliding vane toward the high-pressure side of the sliding vane, part of the pressure of the high-pressure side gas on the sliding vane can be offset, thereby improving the stress condition of the sliding vane and improving the reliability of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a compression structure for a rotary compressor (a lower flange is provided with a flow guide channel) provided in an embodiment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of a compression structure for a rotary compressor (the upper flange is provided with a flow guide channel) provided in an embodiment of the present invention;

[0022] Figure 3 It is a structural schematic diagram of a compression structure for a rotary compressor (both the upper flange and the lower flange are provided with a flow guide channel) provided in an embodiment of the present invention;

[0023] Figure 4 It is a structural schematic diagram of another compression structure for a rotary compressor (the lower flange is provided with a guide channel) provided in an embodiment of the present invention.

[0024] In the figure, 1-flange; 11-lower flange; 12-upper flange; 2-flow guide channel; 3-sliding vane; 4-stress-bearing slot hole; 41-first stress-bearing slot hole; 42-second stress-bearing slot hole; 5-high-pressure side of sliding vane; 6-low-pressure side of sliding vane. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0026] See also Figure 1-Figure 4The present invention provides a compression structure for a rotary compressor, comprising a flange 1 having a guide channel 2 and a vane 3 having a stress-bearing slot 4, wherein the guide channel 2 and the stress-bearing slot 4 are connected, and a high-pressure refrigerant can flow to the stress-bearing slot 4 through the guide channel 2, and an inner side wall of the stress-bearing slot 4 is subjected to a combined force of the high-pressure refrigerant in a direction perpendicular to the vane 3 toward a high-pressure side 5 of the vane. In the prior art, when the compressor is working, since the gas pressure on the high-pressure side is usually greater than the gas pressure on the low-pressure side, it is possible that the force exerted by the high-pressure side gas on the vane is greater than the force exerted by the low-pressure side gas on the vane, causing uneven force on the vane 3, which may affect the service life of the vane and reduce the reliability of the compressor; and the compression structure for the rotary compressor provided by the present invention, due to the design of the guide channel 2 on the flange 1 and the force-bearing slot hole 4 on the vane 3, allows the high-pressure refrigerant to flow into the force-bearing slot hole 4, and since the inner side wall of the force-bearing slot hole 4 is subjected to the combined force of the high-pressure refrigerant in a direction perpendicular to the vane 3 toward the high-pressure side 5 of the vane, part of the pressure of the high-pressure side gas on the vane 3 can be offset, which is used to reduce the uneven force on the high-pressure side and the low-pressure side of the vane 3 to a certain extent, improve the force condition of the vane 3, and improve the reliability of the compressor.

[0027] In addition, under the premise of ensuring the strength of the sliding vane, the larger the surface area of ​​the stress-bearing slot hole 4, the better, so that the resultant force of the high-pressure refrigerant on the inner wall of the stress-bearing slot hole 4 in the direction perpendicular to the sliding vane 3 is relatively larger (the larger the surface area of ​​the stress-bearing slot hole 4, the greater the pressure of the high-pressure gas on the stress-bearing slot hole 4, and the greater the force decomposed in the horizontal direction, which can offset more the gas force of the high-pressure side on the sliding vane 3), which can improve the stress condition of the sliding vane.

[0028] As an optional implementation of the embodiment of the present invention, at least one of the flanges 1 on the upper and lower sides of the sliding vane 3 is provided with a guide channel 2. Figure 1 , the guide channel 2 may be provided only on the lower flange 11 of the compression structure, see Figure 2 , the guide channel 2 may be provided only on the upper flange 12 of the compression structure, see Figure 3 , the lower flange 11 and the upper flange 12 of the compression structure can be provided with a guide channel 2, when the flanges 1 on the upper and lower sides of the slide 3 are provided with a guide channel 2, the two guide channels 2 are respectively connected to the corresponding force slots 4 on the slide 3, such as Figure 3 shown.

[0029] As an optional implementation method of the present invention, the circumferential side wall of the stress-bearing slot hole 4 that is subjected to the force in the direction of the high-pressure side 5 of the vane is the high-pressure side wall, the circumferential side wall of the stress-bearing slot hole 4 that is subjected to the force in the direction of the low-pressure side 6 of the vane is the low-pressure side wall, the bottom surface of the stress-bearing slot hole 4 is subjected to the force in the direction of the high-pressure side 5 of the vane, and the resultant force of the high-pressure refrigerant on the high-pressure side wall and the bottom surface of the stress-bearing slot hole 4 in the direction perpendicular to the vane 3 is greater than the resultant force of the high-pressure refrigerant on the low-pressure side wall in the direction perpendicular to the vane 3, so as to achieve that the resultant force of the high-pressure refrigerant on the inner side wall of the stress-bearing slot hole 4 in the direction perpendicular to the vane 3 is directed toward the high-pressure side 5 of the vane. For specific implementation methods, please refer to Figure 1-Figure 3 , the force-bearing slot hole 4 can be inclined toward the high-pressure side of the vane, and the acute angle range R between the axis of the force-bearing slot hole 4 and the horizontal plane is 0°<R<90°. In addition, the force-bearing slot hole 4 structure can also be other structures, as long as it is ensured that the inner wall of the force-bearing slot hole 4 is subjected to the combined force of the high-pressure refrigerant in the direction perpendicular to the vane 3 toward the high-pressure side 5 of the vane.

[0030] See also Figure 3 The acute angle between the stress-bearing slot hole 4 arranged at the top and the horizontal plane can be different from the acute angle between the stress-bearing slot hole 4 arranged at the bottom and the horizontal plane.

[0031] As an optional implementation method of an embodiment of the present invention, the circumferential side wall of the stress-bearing slot hole 4 that is subjected to the force in the direction toward the high-pressure side 5 of the vane is the high-pressure side wall, the circumferential side wall of the stress-bearing slot hole 4 that is subjected to the force in the direction toward the low-pressure side 6 of the vane is the low-pressure side wall, the bottom surface of the stress-bearing slot hole 4 is subjected to the force in the direction toward the low-pressure side 6 of the vane, and the resultant force of the high-pressure refrigerant on the low-pressure side wall and the bottom surface of the stress-bearing slot hole 4 in the direction perpendicular to the vane 3 is smaller than the resultant force of the high-pressure refrigerant on the high-pressure side wall in the direction perpendicular to the vane 3. This enables the inner side wall of the stress-bearing slot hole 4 to be subjected to the resultant force of the high-pressure refrigerant in the direction perpendicular to the vane 3 toward the high-pressure side 5 of the vane. For specific implementation methods, please refer to Figure 4 The force-bearing slot hole 4 may include a first force-bearing slot hole 41 and a second force-bearing slot hole 42. The first force-bearing slot hole 41 is connected to the guide channel 2 and is inclined toward the high-pressure side of the sliding vane. The second force-bearing slot hole 42 is inclined toward the low-pressure side of the sliding vane. The first force-bearing slot hole 41 is connected to the circumferential hole wall of the second force-bearing slot hole 42. Figure 4 It is shown that the force-bearing slot hole 4 is provided on the lower flange 11, and the force-bearing slot hole 4 can also be provided on the upper flange 11, and the flow guide channel 2 can also be provided on both the lower flange 11 and the upper flange 12, and the two flow guide channels 2 are respectively connected with the corresponding force-bearing slot holes 4 on the sliding vane 3. In addition, the force-bearing slot hole 4 structure can also be other structures, as long as it is ensured that the inner side wall of the force-bearing slot hole 4 is subjected to the combined force of the high-pressure refrigerant in the direction perpendicular to the sliding vane 3 toward the high-pressure side 5 of the sliding vane.

[0032] As an optional implementation method of the present invention, see Figure 1-Figure 4The guide channel 2 includes a vertical channel and a transverse channel connected to the vertical channel, the vertical channel is connected to the stress-bearing slot hole 4, and the transverse channel extends to the outer side of the flange 1. The structure of the guide channel 2 can also be other structures as long as it can achieve the goal of guiding the high-pressure refrigerant to the stress-bearing slot hole 4.

[0033] Embodiment 1:

[0034] See also Figure 1 A compression structure for a rotary compressor comprises a lower flange 11 on which a guide channel 2 is arranged and a vane 3 on which a force-bearing slot hole 4 is arranged, the guide channel 2 and the force-bearing slot hole 4 are connected, the force-bearing slot hole 4 can be inclined toward the high-pressure side of the vane, and the acute angle range R between the axis of the force-bearing slot hole 4 and the horizontal plane is 0°<R<90°, and the inner side wall of the force-bearing slot hole 4 is subjected to the resultant force of the high-pressure refrigerant in a direction perpendicular to the vane 3 toward the high-pressure side 5 of the vane.

[0035] Embodiment 2:

[0036] See also Figure 2 A compression structure for a rotary compressor comprises an upper flange 12 on which a guide channel 2 is arranged and a vane 3 on which a force-bearing slot hole 4 is arranged, the guide channel 2 and the force-bearing slot hole 4 are connected, the force-bearing slot hole 4 can be inclined toward the high-pressure side of the vane, and the acute angle range R between the axis of the force-bearing slot hole 4 and the horizontal plane is 0°<R<90°, and the inner side wall of the force-bearing slot hole 4 is subjected to the resultant force of the high-pressure refrigerant in a direction perpendicular to the vane 3 toward the high-pressure side 5 of the vane.

[0037] Embodiment 3:

[0038] See also Figure 3 A compression structure for a rotary compressor, wherein an upper flange 12 and a lower flange 11 are both provided with a guide channel 2, a force-bearing slot hole 4 is provided on a sliding vane 3, and the two guide channels 2 are respectively connected with the corresponding force-bearing slot holes 4 on the sliding vane 3; the force-bearing slot hole 4 can be inclined toward the high-pressure side of the sliding vane, and the acute angle range R between the axis of the force-bearing slot hole 4 and the horizontal plane is 0°<R<90°, and the inner side wall of the force-bearing slot hole 4 is subjected to the resultant force of the high-pressure refrigerant in a direction perpendicular to the sliding vane 3 toward the high-pressure side 5 of the sliding vane.

[0039] Embodiment 4:

[0040] See also Figure 4 The difference from Example 1 is the structure of the stress-bearing slot hole 4. The stress-bearing slot hole 4 includes a first stress-bearing slot hole 41 and a second stress-bearing slot hole 42. The first stress-bearing slot hole 41 is connected to the guide channel 2 and is inclined toward the high-pressure side of the sliding vane. The second stress-bearing slot hole 42 is inclined toward the low-pressure side of the sliding vane. The first stress-bearing slot hole 41 is connected to the circumferential hole wall of the second stress-bearing slot hole 42.

[0041] Embodiment 5:

[0042] The difference from Example 2 is the structure of the stress-bearing slot hole 4. The stress-bearing slot hole 4 includes a first stress-bearing slot hole 41 and a second stress-bearing slot hole 42. The first stress-bearing slot hole 41 is connected to the guide channel 2 and is inclined toward the high-pressure side of the sliding vane, and the second stress-bearing slot hole 42 is inclined toward the low-pressure side of the sliding vane. The circumferential hole wall of the first stress-bearing slot hole 41 is connected to that of the second stress-bearing slot hole 42.

[0043] Embodiment 6:

[0044] The difference from Example 3 is the structure of the stress-bearing slot hole 4. The stress-bearing slot hole 4 includes a first stress-bearing slot hole 41 and a second stress-bearing slot hole 42. The first stress-bearing slot hole 41 is connected to the guide channel 2 and is inclined toward the high-pressure side of the sliding vane, and the second stress-bearing slot hole 42 is inclined toward the low-pressure side of the sliding vane. The circumferential hole wall of the first stress-bearing slot hole 41 is connected to that of the second stress-bearing slot hole 42.

[0045] Embodiment 7:

[0046] A rotary compressor comprises any compression structure for a rotary compressor described in any one of embodiments 1-6.

[0047] Embodiment 8:

[0048] An air conditioner comprises any compression structure for a rotary compressor in embodiments 1-6.

[0049] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A compression structure for a rotary compressor, characterized in that: It comprises a flange (1) on which a flow guide channel (2) is provided and a sliding plate (3) on which a force bearing slot hole (4) is provided, wherein: The guide channel (2) and the stress-bearing slot hole (4) are connected, and the high-pressure refrigerant can flow to the stress-bearing slot hole (4) through the guide channel (2), and the inner wall of the stress-bearing slot hole (4) is subjected to the combined force of the high-pressure refrigerant in a direction perpendicular to the sliding vane (3) toward the high-pressure side (5) of the sliding vane; The circumferential side wall of the force-bearing slot hole (4) that is subjected to the force in the direction of the high-pressure side (5) of the sliding vane is the high-pressure side wall, and the circumferential side wall of the force-bearing slot hole (4) that is subjected to the force in the direction of the low-pressure side (6) of the sliding vane is the low-pressure side wall. The bottom surface of the force-bearing slot hole (4) is subjected to the force in the direction of the high-pressure side (5) of the sliding vane. The resultant force of the high-pressure refrigerant on the high-pressure side wall and the bottom surface of the force-bearing slot hole (4) in a direction perpendicular to the sliding vane (3) is greater than the resultant force of the high-pressure refrigerant on the low-pressure side wall in a direction perpendicular to the sliding vane (3); The stress-bearing slot hole (4) is arranged obliquely toward the high-pressure side of the sliding vane.

2. The compression structure for a rotary compressor according to claim 1, characterized in that: The guide channel (2) is provided on at least one of the flanges (1) on the upper and lower sides of the sliding plate (3).

3. The compression structure for a rotary compressor according to claim 2, characterized in that: The guide channels (2) are arranged on the flanges (1) on the upper and lower sides of the slide (3), and the two guide channels (2) are respectively connected to the corresponding force-bearing slot holes (4) on the slide (3).

4. The compression structure for a rotary compressor according to claim 1, characterized in that: The acute angle range R between the axis of the stress-bearing slot hole (4) and the horizontal plane is 0°<R<90°.

5. The compression structure for a rotary compressor according to any one of claims 1 to 3, characterized in that: The circumferential side wall of the stress-bearing slot hole (4) that is subjected to the force in the direction toward the high-pressure side (5) of the sliding vane is the high-pressure side wall, and the circumferential side wall of the stress-bearing slot hole (4) that is subjected to the force in the direction toward the low-pressure side (6) of the sliding vane is the low-pressure side wall. The bottom surface of the stress-bearing slot hole (4) is subjected to the force in the direction toward the low-pressure side (6) of the sliding vane, and the resultant force of the high-pressure refrigerant on the low-pressure side wall and the bottom surface of the stress-bearing slot hole (4) in a direction perpendicular to the sliding vane (3) is smaller than the resultant force of the high-pressure refrigerant on the high-pressure side wall in a direction perpendicular to the sliding vane (3).

6. The compression structure for a rotary compressor according to claim 5, characterized in that: The stress-bearing slot hole (4) comprises a first stress-bearing slot hole (41) and a second stress-bearing slot hole (42); the first stress-bearing slot hole (41) is connected to the guide channel (2) and is inclined toward the high-pressure side of the sliding vane; the second stress-bearing slot hole (42) is inclined toward the low-pressure side of the sliding vane; the first stress-bearing slot hole (41) is connected to the circumferential hole wall of the second stress-bearing slot hole (42).

7. The compression structure for a rotary compressor according to any one of claims 1 to 3, characterized in that: The guide channel (2) comprises a vertical channel and a transverse channel connected to the vertical channel, the vertical channel is connected to the stress-bearing slot hole (4), and the transverse channel extends to the outer side surface of the flange (1).

8. A rotary compressor, characterized in that: The invention comprises a compression structure for a rotary compressor as described in any one of claims 1 to 7.

9. An air conditioner, characterized in that: The invention comprises a compression structure for a rotary compressor as described in any one of claims 1 to 7.

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