CN220101542U - Compressor and refrigeration equipment - Google Patents
Compressor and refrigeration equipment Download PDFInfo
- Publication number
- CN220101542U CN220101542U CN202321134841.2U CN202321134841U CN220101542U CN 220101542 U CN220101542 U CN 220101542U CN 202321134841 U CN202321134841 U CN 202321134841U CN 220101542 U CN220101542 U CN 220101542U
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- compressor
- cylinder
- lower bearing
- return pipe
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 12
- 238000003860 storage Methods 0.000 claims abstract description 69
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000003921 oil Substances 0.000 abstract description 167
- 239000010687 lubricating oil Substances 0.000 abstract description 43
- 238000005299 abrasion Methods 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 description 24
- 239000000314 lubricant Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 7
- 238000005461 lubrication Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The technical scheme of the utility model discloses a compressor and refrigeration equipment, wherein the compressor comprises a shell, a pump body assembly and an oil return pipe, the pump body assembly is arranged on the shell, a space is reserved between the pump body assembly and the bottom of the shell, and a liquid storage cavity is formed; the oil return pipe is arranged in the shell and is provided with a first end and a second end, the first end is communicated with the liquid storage cavity, and the second end is communicated with the pump body component. According to the technical scheme, the lubricating oil deposited at the bottom of the liquid storage cavity of the compressor can return to the pump body assembly through the oil return pipe, and the lubricating oil is conveyed to other parts of the compressor through the oil path channels in the crankshaft and the oil feeding blade shell, so that friction force among parts in the compressor is reduced, movement among the parts is smoother, and abrasion of the parts is reduced. Thereby improving reliability of the compressor while reducing the possibility of the compressor failing.
Description
Technical Field
The utility model relates to the technical field of refrigeration equipment, in particular to a compressor and refrigeration equipment.
Background
The compressor is a driven fluid machine that lifts low pressure gas to high pressure gas and is the heart of the refrigeration system. The low-temperature low-pressure refrigerant gas is sucked from the air suction pipe, the motor is operated to drive the piston to compress the low-temperature low-pressure refrigerant gas, and then the high-temperature high-pressure refrigerant gas is discharged to the air discharge pipe to provide power for refrigeration cycle.
Inside the compressor pump body, generally need pour into the lubricating oil that is used for lubricating into to through the oil circuit passageway in bent axle and the blade casing that oils, carry lubricating oil to other spare parts of compressor, with the frictional force that reduces between the inside spare part of compressor, make the motion between each spare part more smooth, reduce the wearing and tearing of spare part. However, due to the long-term operation of the compressor, certain lubricating oil is discharged along with vaporized refrigerant in the pump body of the compressor, and returns to the liquid storage cavity of the compressor through a pipeline, so that the lubricating oil in the pump body of the compressor is reduced, the compressor mechanism is easily worn in a high-temperature and high-pressure environment, the reliability of the compressor is reduced, and meanwhile, the frequent faults of the compressor are also caused.
Disclosure of Invention
The utility model mainly aims to provide a compressor, which aims to return lubricating oil deposited at the bottom of a liquid storage cavity into a pump body assembly.
The technical scheme of the utility model provides a compressor, which comprises the following components:
a housing;
the pump body assembly is arranged on the shell, and a liquid storage cavity is formed between the pump body assembly and the bottom of the shell;
the oil return pipe is arranged in the shell and is provided with a first end and a second end, the first end is communicated with the liquid storage cavity, and the second end is communicated with the pump body assembly.
In an embodiment, the pump body assembly comprises a cylinder and a lower bearing, wherein the lower bearing is arranged on one side of the cylinder, which is close to the liquid storage cavity, and is connected with the cylinder; the lower bearing is provided with an air inlet channel, the air inlet channel is communicated with the air inlet of the cylinder and the liquid storage cavity, and the second end of the air inlet channel is arranged in a penetrating mode so as to be communicated with the air inlet of the cylinder.
In one embodiment, the oil return pipe has an outer diameter R 1 The diameter of the air inlet channel is R 2 ，R 1 And R is R 2 The method meets the following conditions: r is R 1 Less than 0.15R 2 And is greater than 0.04R 2 。
In one embodiment, from theThe distance from the center of the second end port to one side surface of the lower bearing close to the cylinder is H 1 ，H 1 Not more than 20mm and not less than 0mm.
In an embodiment, the intake passage is inclined toward the axis of the housing in a direction from the lower bearing to the cylinder, and the second end extends in an intake direction of the intake passage and passes out of the intake passage.
In an embodiment, the pump body assembly further comprises an oil cover, a crankshaft and an oil applying blade shell, wherein the oil cover is arranged on one side of the lower bearing away from the cylinder and is connected with the lower bearing to form an oil storage tank; the crankshaft sequentially penetrates through and is connected with the air cylinder and the lower bearing, and the oil feeding blade shell is arranged in the oil storage tank and is connected with one end of the crankshaft.
In an embodiment, the pump body assembly further comprises an oil cover and a crankshaft, wherein the oil cover is arranged on one side of the lower bearing away from the cylinder and is connected with the lower bearing to form an oil storage tank; the crankshaft sequentially passes through the cylinder and the lower bearing and is arranged in the oil storage tank in a penetrating manner;
the distance from the lower surface of the lower bearing to the upper surface of the oil cover is H 2 The distance from the lower surface of the crankshaft to the upper surface of the oil cover is H 3 ，H 2 And H is 3 The method meets the following conditions: h 3 Not more than 0.33H 2 And is not less than 0.05H 2 。
In one embodiment, the housing comprises a top cover, a bottom cover, and a main housing connecting the top cover and the bottom cover; the oil cover is provided with an avoidance port, and the oil return pipe penetrates through the oil cover from the avoidance port and is welded, bonded or clamped with the oil cover or the main shell.
In an embodiment, the compressor further includes an air suction pipe penetrating the housing and communicating with the liquid storage chamber, and a minimum area of a cross section of the air suction pipe sectioned by a plane in a radial direction thereof is S 1 The first end has a cross-sectional area S of an inner diameter taken by a plane in a radial direction thereof 2 ，S 1 And S is equal to 2 The method meets the following conditions: s is S 2 Not greater than 0.20S 1 And is not less than 0.01S 1 。
In one embodiment, the oil return pipe has an inner diameter R 3 ，R 3 The method meets the following conditions: r is R 3 Not more than 4mm and not less than 1mm.
In one embodiment, the housing comprises a top cover, a bottom cover, and a main housing connecting the top cover and the bottom cover; a distance H from the center of the first end port to the upper surface of the bottom cover 4 ，H 4 Not more than 10mm and not less than 0.5mm.
In one embodiment, the oil return pipe is an elbow.
In one embodiment, the first end is welded or bonded to the upper surface of the bottom cover.
In one embodiment, the oil return pipe is a straight pipe.
The present utility model also provides a refrigeration appliance including a compressor, the compressor including:
a housing;
the pump body assembly is arranged on the shell, and a liquid storage cavity is formed between the pump body assembly and the bottom of the shell;
the oil return pipe is arranged in the shell and is provided with a first end and a second end, the first end is communicated with the liquid storage cavity, and the second end is communicated with the pump body assembly.
According to the technical scheme, the compressor is provided, the liquid storage cavity is formed in the shell and between the pump body assembly and the bottom of the shell, the oil return pipe is arranged in the shell, one end of the oil return pipe is communicated with the liquid storage cavity, and the other end of the oil return pipe is communicated with the pump body assembly. The lubricating oil deposited at the bottom of the liquid storage cavity can return to the pump body assembly through the oil return pipe, and is conveyed to other parts of the compressor through the crankshaft and the oil path channel in the oil feeding blade shell, so that friction force between the parts inside the compressor is reduced, movement among the parts is smoother, and abrasion of the parts is reduced. Thereby improving reliability of the compressor while reducing the possibility of the compressor failing.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a compressor according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of a compressor in another embodiment of the present utility model;
FIG. 3 is a schematic view of the pump body assembly of FIG. 1;
FIG. 4 is a schematic view of the lower bearing of FIG. 1;
FIG. 5 is a schematic view of the oil cover of FIG. 1;
FIG. 6 is an enlarged view of a portion of FIG. 1 at A;
FIG. 7 is a partial enlarged view at B in FIG. 1;
FIG. 8 is an enlarged view of a portion of FIG. 2 at C;
FIG. 9 is a schematic view of the oil return pipe in FIG. 2;
FIG. 10 is a schematic view of the oil return pipe of FIG. 1;
FIG. 11 is a schematic view of an oil return pipe according to another embodiment of the present utility model;
FIG. 12 is a schematic view of an oil return pipe according to still another embodiment of the present utility model;
fig. 13 is a schematic structural view of a pump body assembly according to another embodiment of the present utility model.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 10 | Compressor | 110 | Top cover |
| 100 | Shell body | 120 | Main shell |
| 200 | Pump body assembly | 130 | Bottom cover |
| 300 | Oil return pipe | 140 | Liquid storage cavity |
| 400 | Air suction pipe | 210 | Cylinder |
| 500 | Motor stator | 220 | Upper bearing |
| 600 | Motor rotor | 230 | Lower bearing |
| 300a | First end | 240 | Crankshaft |
| 300b | Second end | 250 | Oil cover |
| 211 | Air inlet | 260 | Oiling blade shell |
| 231 | Air inlet channel | 252 | Avoidance port |
| 251 | Oil storage tank |
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
Referring to fig. 1 and 2, the present utility model provides a compressor 10, which includes a housing 100, a pump assembly 200 and an oil return pipe 300, wherein the pump assembly 200 is disposed on the housing 100, and a liquid storage chamber 140 is formed between the pump assembly 200 and the bottom of the housing 100; the oil return pipe 300 is disposed in the housing 100, and the oil return pipe 300 has a first end 300a and a second end 300b, wherein the first end 300a is communicated with the liquid storage cavity 140, and the second end 300b is communicated with the pump body assembly 200.
Specifically, the compressor 10 includes a housing 100, a pump body assembly 200, and an oil return tube 300. The housing 100 has a high pressure chamber and a liquid storage chamber 140 therein, and the liquid storage chamber 140 is a low pressure chamber. The pump body assembly 200 is disposed in the high-pressure chamber, and the liquid storage chamber 140 is formed between the pump body assembly 200 and the bottom of the housing 100. The pump body assembly 200 is generally filled with lubricating oil for lubrication, and the lubricating oil is delivered to other parts of the compressor 10 through the crankshaft 240 and the oil path in the oil blade housing 260, so as to reduce friction between the parts in the compressor 10, make movement between the parts smoother, and reduce abrasion of the parts. The liquid storage chamber 140 stores refrigerant, the refrigerant enters different components through an air inlet channel in the shell 100, and the refrigerant is vaporized into high-pressure gaseous refrigerant after being compressed by the pump body component 200 and is discharged from an exhaust port of the compressor 10. However, due to the long-term operation of the compressor 10, some lubrication oil will be discharged from the pump body assembly 200 with the vaporized refrigerant. Through the piping, the refrigerant and the lubricant are returned to the reservoir 140, and the lubricant is deposited to the bottom of the reservoir 140. With the long-term operation of the compressor 10, the lubrication oil inside the pump body assembly 200 may be reduced, thereby causing the internal parts of the compressor 10 to be easily worn out in a high-temperature and high-pressure environment, thereby reducing the reliability of the compressor 10, and also causing frequent malfunctions of the compressor 10.
In order to return the lubricating oil deposited at the bottom of the liquid storage chamber 140 into the pump body assembly 200, a return oil pipe 300 is provided in the housing 100. The oil return pipe 300 has a first end 300a and a second end 300b, the first end 300a is communicated with the liquid storage cavity 140, and the second end 300b is communicated with the pump body assembly 200. The lubricating oil at the bottom of the liquid storage cavity 140 can flow into the oil return pipe 300 from the first end 300a and enter the pump body assembly 200 from the second end 300b, so that the lubricating oil deposited at the bottom of the liquid storage cavity 140 is returned into the pump body assembly 200, and the lubricating oil is conveyed to other parts of the compressor 10 through the crankshaft 240 and the oil path channels in the oil applying vane housing 260, so that friction force among the parts inside the compressor 10 is reduced, movement among the parts is smoother, and abrasion of the parts is reduced. Thereby improving the reliability of the compressor 10 while reducing the likelihood of failure of the compressor 10.
In one embodiment, the pump body assembly 200 includes a cylinder 210 and a lower bearing 230, wherein the lower bearing 230 is disposed on one side of the cylinder 210 near the liquid storage chamber 140 and is connected to the cylinder 210; the lower bearing 230 is provided with an air inlet channel 231, the air inlet channel 231 is communicated with the air inlet 211 of the cylinder 210 and the liquid storage cavity 140, and the second end 300b penetrates through the air inlet channel 231 to be communicated with the air inlet 211 of the cylinder 210.
Referring to fig. 3 and 4, the pump body assembly 200 includes a cylinder 210 and a lower bearing 230, the lower bearing 230 is disposed on one side of the cylinder 210 close to the liquid storage chamber 140, an outer wall of the lower bearing 230 is fixedly connected with an inner wall of the housing 100, and one side of the lower bearing 230 far from the liquid storage chamber 140 is connected with the cylinder 210 to support the cylinder 210. The cylinder 210 has an intake port 211 for refrigerant to enter the interior of the cylinder 210. The lower bearing 230 is provided with an air inlet channel 231, the air inlet channel 231 penetrates through two opposite side surfaces of the lower bearing 230 and is communicated with the air inlet 211 of the cylinder 210 and the liquid storage cavity 140, and the refrigerant in the liquid storage cavity 140 can enter the cylinder 210 from the air inlet 211 through the air inlet channel 231. The air intake passage 231 may extend in the axial direction of the housing 100, may be inclined toward the inside of the housing 100 in the direction from the lower bearing 230 to the cylinder 210, or may extend in a meandering manner from the lower surface of the lower bearing 230 to the upper surface of the lower bearing 230. The port of the intake passage 231 may be circular, polygonal, or arc-shaped. The second end 300b of the oil return pipe 300 is disposed through the air intake channel 231, and a port of the second end 300b may be located in the air intake channel 231 or may pass through the air intake channel 231. The second end 300b communicates with the intake port 211, and when the compressor 10 is operated, the pressure near the intake port 211 is low, and the pressure in the reservoir chamber 140 is higher than the intake port 211, and simultaneously the refrigerant near the intake port 211 flows, and the lubricating oil at the bottom of the reservoir chamber 140 is returned to the inside of the cylinder 210 by the pressure difference and pulsation between the reservoir chamber 140 and the intake port 211.
In one embodiment, the oil return pipe 300 has an outer diameter R 1 The diameter of the intake passage 231 is R 2 ，R 1 And R is R 2 The method meets the following conditions: r is R 1 Less than 0.15R 2 And is greater than 0.04R 2 。
Referring to fig. 3 and 9, when R 1 Less than or equal to 0.04R 2 When the outer diameter of the oil return pipe 300 is too small, the oil returnsThe oil return efficiency of the pipe 300 is low and is easily blocked by impurities coming from the pipe with the lubricating oil, thereby disabling the oil return pipe 300. R is R 1 Greater than or equal to 0.15R 2 When the outer diameter of the oil return pipe 300 is too large, the lubricating oil in the liquid storage chamber 140 is insufficient to fill the oil return pipe 300, so that oil cannot be returned to the cylinder 210 in time. Meanwhile, the refrigerant in the liquid storage chamber 140 also enters the air inlet 211 from the air inlet channel 231, the outer diameter of the oil return pipe 300 is too large, so that the refrigerant is extruded into the air inlet channel of the refrigerant, the refrigerant is prevented from entering the cylinder 210, and the normal operation of the compressor 10 is affected. When R is 1 Less than 0.15R 2 And is greater than 0.04R 2 When the oil return pipe 300 is used, the capillary action is achieved, the lubricating oil at the bottom of the liquid storage cavity 140 can be returned to the cylinder 210, and the normal entering of the refrigerant into the cylinder 210 is not affected.
In one embodiment, the distance from the center of the port at the second end 300b to the side of the lower bearing 230 near the cylinder 210 is H 1 ，H 1 Not more than 20mm and not less than 0mm.
Referring to fig. 6, the distance from the center of the port of the second end 300b to the side of the lower bearing 230 near the cylinder 210 is H 1 When H 1 When the diameter is smaller than 0mm, the port of the second end 300b is located in the air inlet channel 231, and the lubricating oil cannot smoothly reach the cylinder 210, so that the oil return effect of the oil return pipe 300 is affected. When H is 1 Equal to 0mm, the port of the second end 300b is flush with the upper surface of the lower bearing 230 and lubrication oil just enters the air inlet 211 at the second end 300 b. When H is 1 If the diameter is greater than 20mm, the second end 300b may be too high to exceed the edge of the air inlet 211, and may not directly enter the air inlet 211, and the lubricating oil may be damaged to the lower bearing 230 by long-term dropping of the lubricating oil from the second end 300b to the upper surface of the lower bearing 230. Meanwhile, the length of the oil return pipe 300 is increased, and the oil return difficulty and the production cost of the oil return pipe 300 are increased.
In an embodiment, the air intake passage 231 is inclined toward the axis of the housing 100 in the direction from the lower bearing 230 to the cylinder 210, and the second end 300b extends in the air intake direction of the air intake passage 231 and passes out of the air intake passage 231.
Referring to fig. 3, an intake passage 231 is formed between the lower bearing 230 and the cylinder 210In a direction toward the inside of the housing 100, the port of the air intake passage 231 located at the lower surface of the lower bearing 230 is close to the housing 100, and the other port of the air intake passage 231 located at the upper surface of the lower bearing 230 is far from the housing 100 than the port of the lower surface. The part of the pipe section of the oil return pipe 300 positioned in the liquid storage cavity 140 is close to the shell 100, so that interference with other parts is avoided. Another part of the pipe section of the oil return pipe 300 located in the pump body assembly 200 is placed in the intake direction of the intake passage 231, and the port of the second end 300b is closer to the intake port 211 and enters the cylinder 210 with the lubricating oil. The second end 300b passes out of the air inlet channel 231, i.e. H 1 Not greater than 20mm and greater than 0mm.
In one embodiment, the pump body assembly 200 further includes an oil cap 250, a crankshaft 240, and an upper oil vane housing 260, wherein the oil cap 250 is disposed at a side of the lower bearing 230 remote from the cylinder 210 and is connected to the lower bearing 230 to form an oil reservoir 251; crankshaft 240 passes through and connects cylinder 210 and lower bearing 230 in sequence, and oil blade housing 260 is disposed in oil reservoir 251 and connected to one end of crankshaft 240.
Referring to fig. 1 and 3, the pump body assembly 200 further includes an oil cap 250, a crankshaft 240, and an oil blade housing 260, wherein the oil cap 250 is disposed on a side of the lower bearing 230 away from the cylinder 210 and is connected to the lower bearing 230 to form an oil reservoir 251. The lubricant in the pump body assembly 200 is dropped and stored in the lubricant reservoir 251, and at the same time, the lubricant in the lubricant reservoir 251 can be supplied to other parts to reduce friction and wear of the respective parts. Crankshaft 240 is a mechanical element for converting linear motion to rotary motion and is typically comprised of an elongated metal shaft and a plurality of eccentrics. The pump body assembly 200 further includes an upper bearing 220, and the cylinder 210 is disposed between the upper bearing 220 and the lower bearing 230, and connects the upper bearing 220 and the lower bearing 230. Crankshaft 240 sequentially passes through and connects cylinder 210, upper bearing 220, and lower bearing 230, and crankshaft 240 is configured to drive a rotary piston within cylinder 210 and rotate the rotary piston to compress a refrigerant. The upper bearing 220 and the lower bearing 230 support the crankshaft 240. The crankshaft 240 is connected to an end of the liquid storage chamber 140 near the oil blade housing 260, the oil blade housing 260 is a mechanical device for transporting lubricating oil or other fluid, and the oil blade housing 260 is disposed in the oil storage tank 251, and is used for spraying the lubricating oil in the oil storage tank 251 to various parts of the compressor 10, so as to reduce friction and abrasion of various parts, and reduce noise and energy loss.
The compressor 10 further includes a motor stator 500 and a motor rotor 600, wherein the motor rotor 600 is sleeved at one end of the crankshaft 240 far away from the oiling blade housing 260, and the motor rotor 600 is tightly held by cold pressing or hot sleeving and is provided with the crankshaft 240. The motor stator 500 is provided at the outer circumference of the motor rotor 600 and fixedly connected to the inner wall of the housing 100. The motor rotor 600 rotates with respect to the motor stator 500 to transmit a rotational force to the rotary piston of the cylinder 210 to compress the refrigerant.
In one embodiment, the pump body assembly 200 further comprises an oil cover 250 and a crankshaft 240, wherein the oil cover 250 is arranged on one side of the lower bearing 230 away from the cylinder 210 and is connected with the lower bearing 230 to form an oil storage tank 251; crankshaft 240 sequentially passes through and connects cylinder 210 and lower bearing 230, and is disposed in oil reservoir 251; the distance H from the lower surface of the lower bearing 230 to the upper surface of the oil cover 250 2 The distance from the lower surface of the crankshaft 240 to the upper surface of the oil cover 250 is H 3 ，H 2 And H is 3 The method meets the following conditions: h 3 Not more than 0.33H 2 And is not less than 0.05H 2 。
Referring to fig. 13, the distance H from the lower surface of the lower bearing 230 to the upper surface of the oil cover 250 2 When the lower surface of the lower bearing 230 is a plane, the distance from the plane to the upper surface of the oil cover 250 is H 2 The method comprises the steps of carrying out a first treatment on the surface of the When the lower surface of the lower bearing 230 has a plurality of planes, the distance from the plane having the largest area to the upper surface of the oil cover 250 is H 2 . An oil path is formed in the crankshaft 240 to deliver the lubricant in the lubricant reservoir 251 to various portions of the compressor 10 to reduce friction and wear of various parts. When H is 3 Greater than 0.33H 2 When the distance between the crankshaft 240 and the oil cover 250 is long, and when the level of the lubricating oil in the oil reservoir 251 is low, the crankshaft 240 cannot timely convey the lubricating oil in the oil reservoir 251 to various parts of the compressor 10, which may cause friction and wear of various parts. When H is 3 Less than 0.05H 2 The distance between crankshaft 240 and oil cover 250 is relatively short when compressor 10 is in operation, due to the mechanical natureVibration, crankshaft 240 may interfere with or collide with the oil cover. Meanwhile, since the distance between the lower surface of the crankshaft 240 and the upper surface of the oil cover 250 is too short, it is difficult for lubrication oil to enter the crankshaft 240 and to be delivered to various portions of the compressor 10.
In one embodiment, the case 100 includes a top cover 110, a bottom cover 130, and a main case 120 connecting the top cover 110 and the bottom cover 130; the oil cover 250 is provided with a relief port 252, and the oil return pipe 300 passes through the oil cover 250 from the relief port 252 and is welded, adhered or clamped with the oil cover 250 or the main housing 120.
Referring to fig. 1, 2 and 5, the housing 100 is generally cylindrical, and the housing 100 includes a top cover 110, a bottom cover 130 and a main housing 120, wherein a top end of the main housing 120 is connected to the top cover 110, and a bottom end of the main housing 120 is connected to the bottom cover 130. The main housing 120 is coupled to the top cover 110 and the bottom cover 130 by welding, and the housing 100 may be integrally formed. The portion of the return line 300 located in the reservoir 140 may be welded, glued or clamped to the main housing 120. The edge of the cover opening of the oil cover 250 is provided with a turned edge, the oil cover 250 is connected to the lower surface of the lower bearing 230 through the turned edge, and the turned edge is provided with an avoidance opening 252 for the oil return pipe 300 to pass through. The escape port 252 communicates with the intake passage 231 so that the refrigerant in the liquid storage chamber 140 enters the intake passage 231 from the escape port 252. The avoiding port 252 may be a through port or a notch, and serves to avoid the oil return pipe 300 and allow the refrigerant to pass through. The oil return pipe 300 may be welded, glued or snapped with the oil cap 250. The oil return pipe 300 may be welded to the inner wall of the relief port 252 or to the outer wall of the oil cap 250.
In an embodiment, the compressor 10 further includes a suction pipe 400, the suction pipe 400 penetrates the housing 100 and communicates with the liquid storage chamber 140, and a minimum area of a cross section of the suction pipe 400 cut by a plane in a radial direction thereof is S 1 The first end 300a has a cross-sectional area S of an inner diameter taken by a plane in a radial direction thereof 2 ，S 1 And S is equal to 2 The method meets the following conditions: s is S 2 Not greater than 0.20S 1 And is not less than 0.01S 1 。
The compressor 10 further includes an air suction pipe 400, and the air suction pipe 400 penetrates through the casing 100 and is communicated with the liquid storage cavity 140. Manufacturing processThe refrigerant and the lubricant enter the liquid storage chamber 140 through the suction pipe 400, the refrigerant enters the cylinder 210 through the intake runner, and the lubricant is deposited to the bottom of the liquid storage chamber 140. The size of the cross-section of the suction pipe 400, which is sectioned by the plane of the radial direction thereof, represents the effective diameter of the suction pipe 400; the area size of the cross section of the inner diameter of the first end 300a, which is sectioned by the plane of the radial direction thereof, represents the inner diameter size of the oil return pipe 300. When S is 2 Less than 0.01S 1 When the inner diameter of the oil return pipe 300 is too small, the oil from the air suction pipe 400 is more, and the oil return efficiency of the oil return pipe 300 is low, so that the oil at the bottom of the liquid storage chamber 140 cannot be returned to the cylinder 210 in time. When S is 2 Greater than 0.20S 1 When the inner diameter of the oil return pipe 300 is too large, the lubricating oil in the reservoir 140 is insufficient to fill the oil return pipe 300 first, and thus the oil cannot be returned into the cylinder 210.
In one embodiment, the oil return pipe 300 has an inner diameter R 3 ，R 3 The method meets the following conditions: r is R 3 Not more than 4mm and not less than 1mm.
Referring to fig. 7-12, the oil return pipe 300 has an inner diameter R 3 When R is 3 When the diameter of the oil return pipe 300 is smaller than 1mm, the oil return efficiency of the oil return pipe 300 is low, lubricating oil at the bottom of the liquid storage cavity 140 cannot be timely returned to the cylinder 210, and the oil return pipe 300 is easy to be blocked by impurities along with the lubricating oil from the pipeline, so that the oil return pipe 300 is invalid. When R is 3 If the diameter of the oil return pipe 300 is larger than 4mm, the lubricating oil in the liquid storage chamber 140 is insufficient to fill the oil return pipe 300, so that the oil cannot be returned to the cylinder 210 in time. When R is 3 When the diameter of the oil return pipe 300 is not more than 4mm and not less than 1mm, the oil return pipe 300 has capillary action, can return the lubricating oil at the bottom of the liquid storage cavity 140 to the cylinder 210, and can not be blocked by impurities along with the lubricating oil from the pipeline.
In one embodiment, the case 100 includes a top cover 110, a bottom cover 130, and a main case 120 connecting the top cover 110 and the bottom cover 130; a distance H from the center of the port of the first end 300a to the upper surface of the bottom cover 130 4 ，H 4 Not more than 10mm and not less than 0.5mm.
Referring to fig. 7 and 8, the port of the first end 300a of the oil return pipe 300 may face the bottom cover 130, the firstThe end surface of the end 300a is parallel to the upper surface of the bottom cover 130 or forms an acute angle with the upper surface of the bottom cover 130. The port of the first end 300a of the oil return pipe 300 may also be directed toward the main housing 120, and the end surface of the first end 300a is perpendicular to the upper surface of the bottom cover 130. The port of the first end 300a of the oil return pipe 300 may also be directed toward the top cover 110, with the end surface of the first end 300a being parallel to the upper surface of the bottom cover 130, or forming an obtuse angle with the upper surface of the bottom cover 130. A distance H from the center of the port of the first end 300a to the upper surface of the bottom cover 130 4 ，H 4 Not more than 10mm and not less than 0.5mm.
In the case where the port of the first end 300a of the oil return pipe 300 is directed toward the bottom cover 130, when H 4 When the distance between the port of the first end 300a and the bottom cover 130 is smaller than 0.5mm, it is difficult for the lubricant to enter the oil return pipe 300, which causes difficulty. When H is 4 When the distance between the port of the first end 300a and the bottom cover 130 is greater than 10mm, the liquid level of the lubricating oil in the liquid storage cavity 140 needs to be higher than 10mm to return the lubricating oil, so that the lubricating oil in the liquid storage cavity 140 cannot return the lubricating oil in time.
When H in the case where the port of the first end 300a of the oil return pipe 300 is directed toward the main housing 120 4 When the diameter of the oil return pipe 300 is smaller than 0.5mm, the oil return efficiency of the oil return pipe 300 is low, lubricating oil at the bottom of the liquid storage cavity 140 cannot be timely returned to the cylinder 210, and the oil return pipe 300 is easy to be blocked by impurities coming from a pipeline along with the lubricating oil, so that the oil return pipe 300 is invalid. When H is 4 When the diameter of the oil return pipe 300 is larger than 10mm, the lubricating oil in the liquid storage cavity 140 is insufficient to fill the oil return pipe 300, so that oil cannot be returned to the cylinder 210 in time.
When H in the case where the port of the first end 300a of the oil return pipe 300 is directed toward the top cover 110 4 When the diameter is smaller than 0.5mm, the inner diameter of the oil return pipe 300 is too small, and the oil return efficiency of the oil return pipe 300 is low. When H is 4 When the distance between the port of the first end 300a and the bottom cover 130 is greater than 10mm, the liquid level of the lubricating oil in the liquid storage cavity 140 needs to be higher than 10mm to return the lubricating oil, so that the lubricating oil in the liquid storage cavity 140 cannot return the lubricating oil in time.
In one embodiment, the oil return pipe 300 is an elbow.
Referring to fig. 9 to 11, the oil return pipe 300 is an elbow, and may be that a first end 300a of the oil return pipe 300 is an elbow, a second end 300b, and a pipe section between the first end 300a and the second end 300b are straight pipes; alternatively, the first end 300a and the second end 300b may be bent pipes, and the pipe section between the first end 300a and the second end 300b may be a straight pipe; it is also possible that the second end 300b is an elbow, and the first end 300a and the pipe section between the first end 300a and the second end 300b are straight pipes. The oil return pipe 300 may be a spiral bent pipe.
In one embodiment, the first end 300a is welded or adhered to the upper surface of the bottom cover 130.
The oil return pipe 300 is an elbow, the port of the first end 300a faces the side wall of the shell 100, and the outer wall of the first end 300a is welded or bonded with the upper surface of the bottom cover 130, so that the oil return pipe 300 is fixed on the bottom cover 130, and the oil return pipe 300 shakes in the liquid storage cavity 140, thereby affecting the stability of the compressor 10.
In one embodiment, the oil return tube 300 is a straight tube.
Referring to fig. 12, the oil return pipe 300 is a straight pipe, and the straight pipe is disposed along the axial direction of the housing 100, one end of the straight pipe is connected to the liquid storage chamber 140, and the other end of the straight pipe is connected to the cylinder 210. The end surface of the first end 300a of the straight pipe is parallel to the upper surface of the bottom cover 130 and has a distance of 0.5mm to 10 mm.
The present utility model also proposes a refrigeration device, which includes a compressor 10, where the specific structure of the compressor 10 refers to the above embodiment, and since the refrigeration device adopts all the technical solutions of all the above embodiments, at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail herein.
The refrigerating apparatus may be classified into a compression refrigerating apparatus, an absorption refrigerating apparatus, a vapor injection refrigerating apparatus, a heat pump refrigerating apparatus, an electric heating refrigerating apparatus, and the like. The refrigeration equipment mainly comprises a compressor 10, an expansion valve, an evaporator, a condenser, accessories and pipelines. Such as a refrigerator, an air conditioner, etc.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.
Claims (14)
1. A compressor, comprising:
a housing;
the pump body assembly is arranged on the shell, and a liquid storage cavity is formed between the pump body assembly and the bottom of the shell; the pump body assembly comprises a cylinder and a lower bearing, and the lower bearing is arranged on one side of the cylinder, which is close to the liquid storage cavity, and is connected with the cylinder; the lower bearing is provided with an air inlet channel which is communicated with an air inlet of the cylinder and the liquid storage cavity;
the oil return pipe is arranged in the shell and is provided with a first end and a second end, the first end is communicated with the liquid storage cavity, and the second end is arranged in the air inlet channel in a penetrating mode so as to be communicated with the air inlet of the air cylinder.
2. The compressor of claim 1, wherein the oil return pipe has an outer diameter R 1 The diameter of the air inlet channel is R 2 ，R 1 And R is R 2 The method meets the following conditions: r is R 1 Less than 0.15R 2 And is greater than 0.04R 2 。
3. The compressor of claim 1, wherein a distance from a center of the second end port to a side of the lower bearing adjacent to the cylinder is H 1 ，H 1 Not more than 20mm and not less than 0mm.
4. A compressor as claimed in claim 3 wherein said inlet passage is inclined toward the axis of said housing in the direction from said lower bearing to said cylinder, said second end extending in the inlet direction of said inlet passage and out of said inlet passage.
5. The compressor of claim 1, wherein the pump body assembly further comprises an oil cap, a crankshaft, and an oil blade housing, the oil cap being provided on a side of the lower bearing remote from the cylinder and connected to the lower bearing to form an oil reservoir; the crankshaft sequentially penetrates through the air cylinder and the lower bearing, and the oil feeding blade shell is arranged in the oil storage tank and connected to one end of the crankshaft.
6. The compressor of claim 1, wherein the pump body assembly further comprises an oil cap and a crankshaft, the oil cap being provided at a side of the lower bearing remote from the cylinder and connected to the lower bearing to form an oil reservoir; the crankshaft sequentially passes through the cylinder and the lower bearing and is arranged in the oil storage tank in a penetrating manner;
the distance from the lower surface of the lower bearing to the upper surface of the oil cover is H 2 The distance from the lower surface of the crankshaft to the upper surface of the oil cover is H 3 ，H 2 And H is 3 The method meets the following conditions: h 3 Not more than 0.33H 2 And is not less than 0.05H 2 。
7. The compressor of claim 5 or 6, wherein the housing includes a top cover, a bottom cover, and a main housing connecting the top cover and the bottom cover; the oil cover is provided with an avoidance port, and the oil return pipe penetrates through the oil cover from the avoidance port and is welded, bonded or clamped with the oil cover or the main shell.
8. The compressor of claim 1, further comprising a suction pipe penetrating the housing and communicating with the liquid storage chamber, the suction pipe having a minimum area S of a cross section taken by a plane in a radial direction thereof 1 The first end has a cross-sectional area S of an inner diameter taken by a plane in a radial direction thereof 2 ，S 1 And S is equal to 2 The method meets the following conditions: s is S 2 Not greater than 0.20S 1 And is not less than 0.01S 1 。
9. The compressor of claim 8, wherein,the inner diameter R of the oil return pipe 3 The method meets the following conditions: r is R 3 Not more than 4mm and not less than 1mm.
10. The compressor of claim 1, wherein the housing includes a top cover, a bottom cover, and a main housing connecting the top cover and the bottom cover; a distance H from the center of the first end port to the upper surface of the bottom cover 4 ，H 4 Not more than 10mm and not less than 0.5mm.
11. The compressor of claim 10, wherein the oil return pipe is an elbow.
12. The compressor of claim 11, wherein the first end is welded or bonded to an upper surface of the bottom cover.
13. The compressor of claim 10, wherein the oil return tube is a straight tube.
14. A refrigeration device comprising a compressor as claimed in any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321134841.2U CN220101542U (en) | 2023-05-11 | 2023-05-11 | Compressor and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321134841.2U CN220101542U (en) | 2023-05-11 | 2023-05-11 | Compressor and refrigeration equipment |
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| Publication Number | Publication Date |
|---|---|
| CN220101542U true CN220101542U (en) | 2023-11-28 |
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ID=88869771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321134841.2U Active CN220101542U (en) | 2023-05-11 | 2023-05-11 | Compressor and refrigeration equipment |
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| Country | Link |
|---|---|
| CN (1) | CN220101542U (en) |
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2023
- 2023-05-11 CN CN202321134841.2U patent/CN220101542U/en active Active
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