CN217354747U - Pump body assembly, compressor and air conditioner with pump body assembly and compressor - Google Patents
Pump body assembly, compressor and air conditioner with pump body assembly and compressor Download PDFInfo
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- CN217354747U CN217354747U CN202220654338.9U CN202220654338U CN217354747U CN 217354747 U CN217354747 U CN 217354747U CN 202220654338 U CN202220654338 U CN 202220654338U CN 217354747 U CN217354747 U CN 217354747U
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- compressor
- pump body
- crankshaft
- body assembly
- mounting hole
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- 238000005299 abrasion Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 18
- 239000010687 lubricating oil Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 7
- 238000005461 lubrication Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000010726 refrigerant oil Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The application provides a pump body assembly which comprises a flange structure, wherein a mounting hole is formed in the flange structure; a counter bore coaxial with the mounting hole is arranged on the end face of the flange structure and is communicated with the mounting hole; the diameter of the mounting hole is D1; the bore diameter of the counter bore is D2; wherein D2/D1 is more than or equal to 1.45 and less than or equal to 1.7. According to the pump body assembly, the compressor and the air conditioner with the compressor, abrasion between the crankshaft thrust surface and the flange structure can be effectively prevented.
Description
Technical Field
The application belongs to the technical field of air conditioners, and particularly relates to a pump body assembly, a compressor and an air conditioner with the same.
Background
At present, the household air conditioner market has the largest air conditioner carrying a rolling rotor type compressor, and the number of times of crankshaft abrasion faults in compressor faults per year is the largest. The failure is mainly caused by insufficient lubrication of the sliding part of the crankshaft. For example, the crankshaft of the single cylinder rolling rotor compressor is composed of a long shaft, a short shaft and an eccentric shaft, and the parts needing lubrication in common comprise the periphery of the long shaft and the short shaft, the side surface of the eccentric part, the lower thrust surface of the eccentric part and the like. In the rotary compressor, the friction power consumption accounts for about 8% of the total power consumption, wherein the friction loss between the lower thrust surface of the crankshaft and the flange end surface of the auxiliary bearing accounts for 3-6% of the whole friction power consumption, and because a hydrodynamic lubrication oil film is difficult to form due to the reasons of large pressure and the like, the friction pair of the crankshaft thrust part of the compressor is frequently abraded and even fails. In order to meet the requirements of oil supply and sufficient lubrication of a crankshaft oil circuit to a friction pair of a lower thrust surface of an eccentric part of a crankshaft, at present, the oil supply circuit of the crankshaft is optimized, a counter bore is further arranged in the center of a shaft hole of the lower flange end surface, the counter bore is in direct contact with the lower thrust surface of the crankshaft, the counter bore can play a role of temporarily storing lubricating oil, and the arrangement size of the counter bore has great influence on the friction state between the crankshaft thrust surface and the flange surface.
Therefore, how to provide a pump body assembly capable of effectively preventing the abrasion between the thrust surface of the crankshaft and the flange structure becomes a problem which needs to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem that this application will be solved lies in providing a pump body subassembly, compressor and have air conditioner, can effectively prevent the wearing and tearing between crankshaft thrust surface and the flange structure.
In order to solve the above problems, the present application provides a pump body assembly, which includes a flange structure, wherein a mounting hole is formed on the flange structure; a counter bore coaxial with the mounting hole is arranged on the end face of the flange structure and is communicated with the mounting hole; the diameter of the mounting hole is D 1 (ii) a The bore diameter of the counter bore is D 2 (ii) a Wherein D is more than or equal to 1.45 2 /D1≤1.7。
Further, the counter bore is a flexible counter bore, D is more than or equal to 1.5 2 /D 1 ≤1.65。
Furthermore, the pump body assembly further comprises a crankshaft, the crankshaft is mounted in the mounting hole and comprises an eccentric part, the surface of the eccentric part, which is opposite to the flange structure, is a thrust surface, and the diameter of the thrust surface is D3; wherein D is more than or equal to 0.75 2 /D 3 ≤0.85。
Further, the counter bore is a flexible counter bore, D is more than or equal to 0.75 2 /D 3 ≤0.8。
Further, the eccentric amount e of the eccentric portion; the outer diameter of the eccentric part is D4;
further, the counter bore is a flexible counter bore,
further, the maximum depth of the counterbore is H1; wherein, H is more than or equal to 0.15 1 /D 2 ≤0.4。
Further, 0.2 is less than or equal to H 1 /D 2 ≤0.3。
Further, the flange structure comprises a lower flange, and a counter bore is arranged on the upper surface of the lower flange.
Further, the flexible counter bore comprises a first section and a second section which are communicated in sequence; the first section is positioned at one axial end of the mounting hole; the second section is located on the circumferential outer side of the mounting hole.
According to still another aspect of the present application, there is provided a compressor, including a pump body assembly, the pump body assembly being the above pump body assembly.
According to still another aspect of the present application, there is provided an air conditioner including a compressor, the compressor being the above-mentioned compressor.
The application provides a pump body subassembly, compressor and air conditioner that has, this application sets up through the ratio between the aperture to the aperture of mounting hole and the aperture of counter bore, can guarantee that pump body subassembly effectively prevents wearing and tearing between bent axle thrust surface and the flange structure. This application can effectively prevent wearing and tearing between bent axle thrust surface and the flange structure.
Drawings
FIG. 1 is a cross-sectional view of a flange configuration according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of a flange configuration of an embodiment of the present application;
FIG. 3 is a schematic view of a flange structure and a crankshaft mounting structure according to an embodiment of the present application;
FIG. 4 is a schematic structural view of a pump body assembly according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a compressor according to an embodiment of the present application;
FIG. 6 is a graph illustrating the effect of D2/D3 on compressor energy efficiency ratio and crankshaft thrust surface wear life of an embodiment of the present application;
FIG. 7 is a graph of the effect of H1/D2 on crankshaft short axis contact stress for an embodiment of the present application.
The reference numerals are represented as:
1. a flange structure; 11. a lower flange; 12. an upper flange; 13. mounting holes; 14. a counter bore; 2. a crankshaft; 21. an eccentric portion; 3. a housing; 4. a motor; 5. a liquid separator; 6. a cylinder; 7. a roller; 8. and (4) sliding a sheet.
Detailed Description
Referring to fig. 1-7 in combination, a pump body assembly comprises a flange structure 1, wherein a mounting hole 13 is formed in the flange structure 1; a counter bore 14 which is coaxial with the mounting hole 13 is arranged on the end face of the flange structure 1, and the counter bore 14 is communicated with the mounting hole 13; the diameter of the mounting hole 13 is D1; the bore diameter of the counterbore 14 is D2; wherein D2/D1 is more than or equal to 1.45 and less than or equal to 1.7. 13 diameter D1(mm) of mounting hole of flange structure 1 in this application, flange structure 1's counter bore 14 diameter D2(mm), wherein flange counter bore 14 diameter needs reasonable setting, 14 diameter undersize of counter bore will lead to the less oil mass that is not enough to satisfy to play the lubrication optimization to 2 thrust faces of bent axle in the 14 cavities of counter bore, 14 diameters of counter bore too big cause 2 thrust faces of bent axle and 11 effective area of contact of lower flange to reduce easily, and then aggravate the wearing and tearing of both contact faces. By limiting the ratio of D2/D1, within the range, the lubricating oil can be stored in a sufficient gap between the counterbore 14 and the outer wall of the short shaft of the crankshaft 2, and the effective contact area between the lower thrust surface of the crankshaft 2 and the end surface of the flange is not too small due to the fact that the diameter of the counterbore 14 is not too large, so that abrasion of the contact surfaces is aggravated; can also prevent; D2/D1 is in the range, the application can effectively prevent the abrasion between the thrust surface of the crankshaft 2 and the flange structure 1. The flange structure 1 comprises a lower flange 11 and an upper flange 12, and a mounting hole 13 is a shaft hole; the counter bore 14 is opened on the end face of the lower flange 11, and the center of the shaft hole of the end face of the lower flange 11 is opened with the counter bore 14.
The application also discloses a plurality of embodiments, the counter bore 14 is a flexible counter bore, and D2/D1 is more than or equal to 1.5 and less than or equal to 1.65. The compliant counterbore refers to a compliant slotted counterbore. The flexible counter bore refers to a support wall with a thin wall thickness (in principle, an outer side groove forming the thin support wall can be a ring groove or a rectangular groove, and the ring groove is generally selected on the premise of convenient processing), and the support wall allows certain flexible deformation. The abrasion of the wall of the shaft hole to the contact part of the crankshaft (especially the root part of the crankshaft close to the end surface of the flange) in the operation process is reduced.
The application also discloses some embodiments, the pump body assembly further comprises a crankshaft 2, the crankshaft 2 is installed in the installation hole 13, the crankshaft 2 comprises an eccentric part 21, a surface of the eccentric part 21 opposite to the flange structure 1 is a thrust surface, and the diameter of the thrust surface is D3; wherein D2/D3 is more than or equal to 0.75 and less than or equal to 0.85.
The application also discloses a plurality of embodiments, the counter bore 14 is a flexible counter bore, and D2/D3 is more than or equal to 0.75 and less than or equal to 0.8. The flexible counter bore is referred to as a flexible slotted counter bore. D2/D3 has the influence to compressor energy efficiency ratio and bent axle 2 thrust surface wearing and tearing life, and the ratio of undersize can make bent axle 2 thrust surface and lower flange 11 effective area of contact bigger, but also leads to the increase of friction consumption between the two, and too big ratio reduces both effective area of contact, and then reduces friction consumption, and effective area of contact reduces, also makes bent axle 2 thrust surface and lower flange 11 wear aggravation between, influences bent axle 2 life. When the ratio is between 0.75 and less than or equal to D2/D3 and less than or equal to 0.8, the long-term operation reliability and the better energy efficiency ratio of the compressor can be ensured. When the ratio is between 0.75 and not more than D2/D3 and not more than 0.8, the energy efficiency ratio of the compressor reaches the highest level.
The application also discloses some embodiments, the eccentricity e of the eccentric portion 21; the outer diameter of the eccentric portion 21 is D4;
the present application also discloses embodiments, wherein the counterbore 14 is a flexible counterbore,
the flexible counter bore is referred to as a flexible slotted counter bore.
The present application also discloses embodiments in which the maximum depth of the counterbore 14 is H1; wherein, H1/D2 is more than or equal to 0.15 and less than or equal to 0.4. The depth of the counter bore 14 on the flange structure 1 is H1(mm), and within the range, the adverse effect of the over-depth or over-shallow depth of the counter bore 14 on the contact stress of the short shaft of the crankshaft 2 and the shaft hole of the lower flange 11 can be prevented, such as the over-depth of the counter bore 14, the insufficient support length of the short shaft and the large contact stress. The ratio range of the depth of the flange counter bore 14 to the diameter of the counter bore 14 is limited to be 0.15-0. 1/D2-0.4. Within the limited range of the ratio, the depth of the counter bore 14 can be ensured to be within a reasonable range, so that the contact stress of the short shaft and the shaft hole of the crankshaft 2 is within an acceptable range. Experiments prove that compared with a compressor which does not limit the diameter and the depth of the counter bore 14 in the prior art, the compressor which limits the diameter and the depth of the counter bore 14 of the lower flange 11 according to the technical scheme of the application has the energy efficiency which is 3.5 percent higher than that of the traditional compressor.
The application also discloses some embodiments, 0.2 ≦ H1/D2 ≦ 0.3. H1/D2 has an effect on the short axis contact stress of the crankshaft 2, and too small or too large of a ratio adversely affects the short axis contact stress. When the ratio is more than or equal to 0.20 and less than or equal to 0.30 of H1/D2, the compressor can be ensured to have higher reliability and energy efficiency ratio.
The present application also discloses embodiments, the flange structure 1 comprises a lower flange 11, and a counter bore 14 is arranged on the upper surface of the lower flange 11. This application is through the limited relation to between 11 terminal surface shaft hole center counter bores 14 apertures of lower flange, degree of depth and flange shaft hole diameter, and in this limited relation within range, make its counter bore 14 full play temporarily store the effect of lubricating oil under guaranteeing structural strength condition, optimize the lubricated effect to 2 lower thrust surfaces of bent axle, and then promote the whole energy efficiency performance of compressor.
The application also discloses some embodiments, the flexible counter bore comprises a first section and a second section which are communicated in sequence; the first section is located at one axial end of the mounting hole 13; the second segment is located circumferentially outside the mounting hole 13. The second segment may be an annular structure extending around the circumferential direction of the mounting hole 13, or may be an axially extending strip-shaped structure located on the outer circumferential side of the mounting hole 13. Thus, a thin support wall is formed on the outer peripheral side of the mounting hole 13, which allows a certain flexible deformation, and reduces the wear of the wall of the shaft hole against the portion contacting the crankshaft (especially the root portion of the crankshaft near the flange end surface) during operation.
According to an embodiment of the present application, there is provided a compressor, including a pump body assembly, the pump body assembly being the above pump body assembly. The compressor can be a rolling rotor compressor; further, the compressor can be a rolling rotor type double-cylinder double-stage compressor; it can also be a single-cylinder rotor compressor. The compressor comprises a shell 3, wherein a motor 4, a pump body assembly, lubricating oil and the like are arranged in the shell 3. Wherein the pump body assembly comprises a crankshaft 2, an upper flange 12, a lower flange 11, a cylinder 6, a roller 7, a sliding vane 8 and the like.
The rolling rotor compressor is composed of a housing 3, a motor 4 composed of a stator assembly and a rotor assembly, a pump assembly for compressing refrigerant, and a refrigerant oil for lubricating and sealing. Generally speaking, low-pressure refrigerant from a refrigeration system enters a pump body assembly after passing through a liquid storage device arranged outside a shell 3, is compressed into high-temperature and high-pressure refrigerant in the pump body assembly, is discharged into the shell 3, flows through a motor 4 and dissipates heat, and enters a condenser through an exhaust pipe on an upper cover of the shell 3, so that the refrigerant compression process of the whole refrigeration cycle is completed.
The compressor mainly comprises a crankshaft 2, a rolling piston (or a roller 7), a liquid separator 5, a cylinder 6, a slide sheet 8, a spring and main and auxiliary bearings covering two end faces of the cylinder 6. The circulation mode of the lubricating oil in the pump body in the working process of the compressor is as follows: and the lubricating oil at the bottom of the compressor shell 3 is immersed in the lower end face of the cylinder 6 of the pump body assembly. The rotor of the motor 4 drives the crankshaft 2 to rotate, and at the moment, the crankshaft 2 also synchronously drives the oil guide sheet assembled at the central oil hole of the crankshaft to rotate. The rotation of the oil guide plate with a spiral structure causes lubricating oil to flow into the central oil hole from the bottom of the short shaft of the crankshaft 2 and rise along the peripheral ridge of the oil guide plate, and the lubricating oil flows into the short shaft oil guide hole of the crankshaft 2, the eccentric part 21 oil guide hole of the crankshaft 2 and the long shaft oil guide hole of the crankshaft 2 in sequence. Then the lubricating oil respectively flows through the end face counter bore 14 and the shaft hole oil groove of the lower flange 11, the vertical groove of the eccentric part 21 of the crankshaft 2 and the inner hole spiral oil groove of the upper flange 12 to complete the lubrication between the short shaft of the crankshaft 2 and the lower flange 11, between the eccentric part 21 of the crankshaft 2 and the roller 7, and between the long shaft of the crankshaft 2 and the upper flange 12.
In addition, the lubricating oil for lubricating the lower thrust surface of the crankshaft 2 at the heavy spot part is mainly divided into:
1. part of lubricating oil flowing through the vertical oil groove of the eccentric part 21 of the crankshaft 2 flows to the contact part of the lower thrust surface of the crankshaft 2 and the lower flange 11 through the annular groove of the eccentric part 21 of the crankshaft 2;
2. lubricating oil from a short shaft oil hole of the crankshaft 2 is temporarily stored in a counter bore 14 on the end face of the lower flange 11, and further the lower thrust surface of the crankshaft 2 is lubricated.
This application is through limiting 11 terminal surface shaft hole center counter bores 14 apertures of flange down, the ratio relation between degree of depth and flange shaft hole diameter, realize the rationalization that counter bores 14 apertures and degree of depth set up, make its abundant interim oil storage function and optimize the lubricated effect of thrust surface under 2 crankshafts, solved among the prior art because thrust surface and 11 terminal surfaces of lower flange are used pressure great relatively under 2 crankshafts, lead to the difficult dynamic pressure lubricating oil film that forms this time, consequently need fully guarantee the problem of the lubricating oil supply here.
According to an embodiment of the application, an air conditioner is provided, which comprises a compressor, wherein the compressor is the compressor.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (11)
1. The pump body assembly is characterized by comprising a flange structure (1), wherein a mounting hole (13) is formed in the flange structure (1); a counter bore (14) coaxial with the mounting hole (13) is arranged on the end face of the flange structure (1), and the counter bore (14) is communicated with the mounting hole (13); the diameter of the mounting hole (13) is D1; the bore diameter of the counter bore (14) is D2; wherein D is more than or equal to 1.45 2 /D 1 ≤1.7。
2. The pump body assembly according to claim 1, wherein the counterbore (14) is a flexible counterbore; 1.5. ltoreq. D 2 /D 1 ≤1.65。
3. The pump block assembly according to claim 1, further comprising a crankshaft (2), the crankshaft (2) being mounted in the mounting hole (13); the crankshaft (2) comprises an eccentric part (21), and the surface of the eccentric part (21) opposite to the flange structure (1) is a pushing surface; the diameter of the thrust surface is D 3 (ii) a Wherein D is more than or equal to 0.75 2 /D 3 ≤0.85。
4. The pump block assembly of claim 3, wherein the counterbore (14) is a compliant counterbore, 0.75 ≦ D 2 /D 3 ≤0.8。
5. The pump body of claim 3-an assembly characterized by the eccentricity e of the eccentric portion (21); the outer diameter of the eccentric part (21) is D 4 ；
6. The pump body assembly according to claim 5, wherein the counterbore (14) is a flexible counterbore,
7. the pump body assembly according to claim 1, wherein the maximum depth of the counterbore (14) is H1; wherein, H1/D2 is more than or equal to 0.15 and less than or equal to 0.4.
8. The pump body assembly of claim 7, wherein 0.2H 1/D2 0.3.
9. The pump body assembly of claim 2, wherein the compliant counterbore includes a first section and a second section in serial communication; the first section is positioned at one axial end of the mounting hole (13); the second section is located circumferentially outside the mounting hole (13).
10. A compressor comprising a pump block assembly, characterized in that it is a pump block assembly according to any one of claims 1 to 9.
11. An air conditioner comprising a compressor, wherein said compressor is as recited in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220654338.9U CN217354747U (en) | 2022-03-24 | 2022-03-24 | Pump body assembly, compressor and air conditioner with pump body assembly and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220654338.9U CN217354747U (en) | 2022-03-24 | 2022-03-24 | Pump body assembly, compressor and air conditioner with pump body assembly and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217354747U true CN217354747U (en) | 2022-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220654338.9U Withdrawn - After Issue CN217354747U (en) | 2022-03-24 | 2022-03-24 | Pump body assembly, compressor and air conditioner with pump body assembly and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217354747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607610A (en) * | 2022-03-24 | 2022-06-10 | 珠海格力电器股份有限公司 | Pump body assembly, compressor and air conditioner with pump body assembly and compressor |
-
2022
- 2022-03-24 CN CN202220654338.9U patent/CN217354747U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607610A (en) * | 2022-03-24 | 2022-06-10 | 珠海格力电器股份有限公司 | Pump body assembly, compressor and air conditioner with pump body assembly and compressor |
| CN114607610B (en) * | 2022-03-24 | 2024-09-06 | 珠海格力电器股份有限公司 | Pump body assembly, compressor and air conditioner with pump body assembly |
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