CN112483406B - Scroll compressor and air conditioner - Google Patents
Scroll compressor and air conditioner Download PDFInfo
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- CN112483406B CN112483406B CN202011430495.3A CN202011430495A CN112483406B CN 112483406 B CN112483406 B CN 112483406B CN 202011430495 A CN202011430495 A CN 202011430495A CN 112483406 B CN112483406 B CN 112483406B
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- 239000003921 oil Substances 0.000 claims abstract description 288
- 239000010687 lubricating oil Substances 0.000 claims abstract description 50
- 239000003507 refrigerant Substances 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000000670 limiting effect Effects 0.000 claims description 53
- 230000007246 mechanism Effects 0.000 claims description 39
- 230000006835 compression Effects 0.000 claims description 38
- 238000007906 compression Methods 0.000 claims description 38
- 238000010521 absorption reaction Methods 0.000 claims description 27
- 238000003860 storage Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 abstract description 5
- 238000007667 floating Methods 0.000 description 18
- 238000005299 abrasion Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 239000011796 hollow space material Substances 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012208 gear oil Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/023—Lubricant distribution through a hollow driving shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/025—Lubrication; Lubricant separation using a lubricant pump
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
本公开提供一种涡旋压缩机和空调器，涡旋压缩机包括：油泵结构、吸油组件、导油部以及油池，所述油池位于所述涡旋压缩机的底部内部，所述吸油组件设置于所述油池中，所述吸油组件的材料密度大于润滑油的密度、且小于制冷剂的密度，使得所述吸油组件悬浮于制冷剂的液面上，所述导油部的一端与所述吸油组件连通、另一端与所述油泵结构的内部连通，所述吸油组件能从所述油池中吸取润滑油、并通过所述导油部导流至所述油泵结构中。根据本公开能够保证低温启动时油泵吸入的为润滑油而非液态制冷剂，避免轴承等接触部位磨损加剧，可实现低温启动润滑，有效提升压缩机低温启动性能及可靠性。
The present disclosure provides a scroll compressor and an air conditioner. The scroll compressor includes: an oil pump structure, an oil suction assembly, an oil guide part, and an oil pool. The oil pool is located inside the bottom of the scroll compressor. The oil suction assembly is arranged in the oil pool. The material density of the oil suction assembly is greater than the density of the lubricating oil and less than the density of the refrigerant, so that the oil suction assembly is suspended on the liquid surface of the refrigerant. One end of the oil guide part is connected to the oil suction assembly, and the other end is connected to the inside of the oil pump structure. The oil suction assembly can absorb lubricating oil from the oil pool and guide it to the oil pump structure through the oil guide part. According to the present disclosure, it can be ensured that the oil pump sucks lubricating oil instead of liquid refrigerant during low-temperature startup, avoiding aggravated wear of contact parts such as bearings, achieving low-temperature startup lubrication, and effectively improving the low-temperature startup performance and reliability of the compressor.
Description
Technical Field
The present disclosure relates to the field of compressors, and in particular, to a scroll compressor and an air conditioner.
Background
The vortex compressor has the characteristics of simple structure, small volume, light weight, low noise, high mechanical efficiency, stable operation and the like. In order to ensure lubrication and cooling, a high-speed scroll compressor is generally provided with an oil pump at the end of a rotating shaft for pumping lubricating oil accumulated in an oil sump at the bottom of the compressor. In order to ensure continuous and stable oil suction, the position of the opening portion of the oil pump is generally set low, so as to avoid abnormal wear of the contact mating portion of the compressor caused by the failure of the oil pump to pump lubricating oil when the amount of oil in the compressor is reduced.
However, when the ambient temperature is low, the refrigerant in the compressor is easy to become liquid and accumulate in the bottom oil pool of the compressor together with the lubricating oil, the refrigerant and the lubricating oil are not mixed, obvious layering occurs, the lubricating oil accumulates in the upper layer of the bottom oil pool after standing because the density of the oil is smaller than that of the refrigerant, and the refrigerant accumulates in the lower layer of the bottom oil pool. At this time, the opening of the oil pump is completely immersed in the refrigerant, and when the compressor is started at a low temperature, the oil pump is used for delivering the liquid refrigerant to the bearings and other sliding parts, which results in the increase of wear of the contact mating parts in the compressor and seriously affects the operation reliability of the compressor.
Because the scroll compressor in the prior art has the technical problems that when the compressor is started at low temperature, lubricating oil at the bottom of an oil pool floats above liquid refrigerant, and the oil pump cannot pump the lubricating oil to cause abrasion of a contact matching part and the like, the scroll compressor and the air conditioner are researched and designed.
BRIEF SUMMARY OF THE PRESENT DISCLOSURE
Therefore, the technical problem to be solved by the present disclosure is to overcome the defect that in the prior art, when the compressor is started at a low temperature, the lubricating oil at the bottom of the oil sump floats above the liquid refrigerant, and the oil pump cannot pump the lubricating oil, so that the contact matching part is worn, thereby providing a scroll compressor and an air conditioner.
In order to solve the above-described problems, the present disclosure provides a scroll compressor including:
Oil pump structure, oil absorption subassembly, lead oily portion and oil sump, the oil sump is located scroll compressor's bottom is inside, the oil absorption subassembly set up in the oil sump, the material density of oil absorption subassembly is greater than the density of lubricating oil, and is less than the density of refrigerant, makes the oil absorption subassembly suspend in the liquid level of refrigerant, the one end of oil guide portion with oil absorption subassembly intercommunication, the other end with the inside intercommunication of oil pump structure, the oil absorption subassembly can follow absorb lubricating oil in the oil sump, and pass through lead oily portion water conservancy diversion to in the oil pump structure.
In some embodiments, the oil absorbing assembly further comprises a limiting structure, wherein the limiting structure can limit the oil absorbing assembly, so that the oil absorbing assembly only moves in the vertical direction.
In some embodiments, the oil suction assembly includes a cylindrical portion and an oil suction pipe having one end communicating with the interior of the cylindrical portion and the other end opening upwardly into a layer of lubricating oil in the oil sump.
In some embodiments, the cylinder portion has a bottom surface capable of receiving lubricating oil thereon, and the oil suction pipe is a bent pipe section structure.
In some embodiments, the oil guide part comprises a hollow cylinder structure, the cylinder part is arranged in a hollow space of the hollow cylinder structure, the oil pump structure comprises a pump body, the pump body is connected with the upper end of the cylinder structure, and the interior of the pump body is communicated with the interior of the cylinder structure, so that oil enters the interior of the pump body through the interior of the cylinder structure.
In some embodiments, when the device further comprises a limiting structure, the limiting structure comprises a limiting groove formed in a position of the cylinder structure in the circumferential direction along the axial direction, and the position, where the oil suction pipe is connected with the cylinder part, of the limiting groove is clamped in the limiting groove, so that the cylinder part and the oil suction pipe can move along the direction of the limiting groove, and the limiting groove extends along the vertical direction.
In some embodiments, a limit part is further connected to the bottom of the cylinder structure, and the limit part is located below the cylinder part, and/or the cylinder structure and the pump body are integrally formed.
In some embodiments, the spacing portion is a disk-shaped structure.
In some embodiments, the oil guide portion includes a hose, and the oil suction assembly includes a floating oil suction body such that the floating oil suction body is located at an upper end of a refrigerant liquid surface, the floating oil suction body is communicated with one end of the hose, and the other end of the hose is communicated to an inside of the oil pump structure.
In some embodiments, when further comprising a spacing structure, the spacing structure comprises a spacing shelf disposed in the oil sump, the spacing shelf having an interior space extending in a vertical direction, the floating oil absorption body disposed in the interior space.
In some embodiments, the oil pump structure comprises a pump body and a compression mechanism, wherein a containing space for containing the compression mechanism therein is arranged in the pump body, a conducting groove is formed in the bottom of the pump body, the lower end of the conducting groove is communicated with the oil guiding part and sucks oil from the oil guiding part, and the oil enters the compression mechanism through the conducting groove.
In some embodiments, an oil storage tank is further formed on the upper end face of the bottom of the pump body, the oil storage tank is of a sinking tank structure, and the oil discharged by the compression mechanism reaches the oil storage tank;
the scroll compressor further includes a crankshaft having a crankshaft hole therein, and the oil reservoir is capable of communicating with the interior of the crankshaft hole to suck oil through the oil reservoir and into the crankshaft hole.
In some embodiments, a lower end of the crankshaft is provided with a drive structure that is coupled to the compression mechanism to drive the compression mechanism in operation.
In some embodiments, the driving structure is disposed in the crankshaft hole and is located at the lower end of the crankshaft, the pump body is connected to the lower end of the crankshaft, and a pump shell is further disposed between the upper end surface of the pump body and the lower end surface of the crankshaft;
the pump housing has an accommodating hole for accommodating a portion of the driving structure to pass through the accommodating hole to be connected with the compression mechanism to drive the compression mechanism to operate.
The present disclosure also provides an air conditioner comprising the scroll compressor of any one of the preceding claims.
The scroll compressor and the air conditioner provided by the present disclosure have the following beneficial effects:
According to the oil suction device, the oil suction component is arranged in the oil pool, the material density of the oil suction component is larger than that of lubricating oil and smaller than that of refrigerant, the oil suction component can move freely in the axial direction of the pump body and is always located above the liquid level of the refrigerant, the sucked lubricating oil is effectively led into the oil pump structure through the oil guiding function of the oil guiding part, oil suction is completed, the suction inlet of the oil pump of the compressor is always located in the lubricating oil, the structure can ensure that the sucked lubricating oil is not liquid refrigerant when the oil pump is started at low temperature, the abrasion aggravation of contact parts such as bearings is avoided, the low-temperature starting lubrication can be realized, and the low-temperature starting performance and reliability of the compressor are effectively improved.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a scroll compressor according to a first embodiment of the present disclosure;
fig. 2 is a schematic diagram of an oil pump according to a first embodiment of the disclosure;
FIG. 3 is an exploded view of an oil pump according to a first embodiment of the present disclosure;
Fig. 4 is a schematic diagram of the pump body structure of the oil pump according to the first embodiment of the disclosure;
Fig. 5 is a schematic view of a suction inlet structure of an oil pump according to a first embodiment of the present disclosure;
Fig. 6 is a schematic diagram of an oil pump according to a second embodiment of the present disclosure.
The reference numerals are expressed as:
01. The oil pump comprises a shell component, a fixed scroll component, a movable scroll component, a 04, an anti-rotation mechanism, a 05, an upper supporting component, a 06, a crankshaft, a 061, a driving structure, 062, a crankshaft hole, 07, a rotor component, 08, a motor, 09, a lower supporting component, 10, an oil pump structure, 11, an oil pool, 101, a pump shell, 102, a pump body, 103, a compression mechanism, 105, a limiting part, 1021, a containing space, 1022, an oil storage tank, 1023, a cylinder structure, 1024, a limiting groove, 1025, a conducting groove, 1041, a cylinder part, 1042, an oil suction pipe, 106, a hose, 107, a floating oil suction body, 108 and a limiting frame.
Detailed Description
As shown in fig. 1-6, the present disclosure provides a scroll compressor comprising:
Oil pump structure 10, oil absorption subassembly, lead oily portion and oil sump 11, oil sump 11 is located scroll compressor's bottom is inside, oil absorption subassembly set up in oil sump 11, oil absorption subassembly's material density is greater than the density of lubricating oil, and is less than the density of refrigerant, makes oil absorption subassembly suspension in the liquid level of refrigerant, lead oily portion one end with oil absorption subassembly intercommunication, the other end with oil pump structure's inside intercommunication, oil absorption subassembly can follow oil sump 11 absorbs lubricating oil, and through lead oily portion water conservancy diversion to in the oil pump structure 10.
According to the oil suction device, the oil suction component is arranged in the oil pool, the material density of the oil suction component is larger than that of lubricating oil and smaller than that of refrigerant, the oil suction component can move freely in the axial direction of the pump body and is always located above the liquid level of the refrigerant, the sucked lubricating oil is effectively led into the oil pump structure through the oil guiding function of the oil guiding part, oil suction is completed, the suction inlet of the oil pump of the compressor is always located in the lubricating oil, the structure can ensure that the sucked lubricating oil is not liquid refrigerant when the oil pump is started at low temperature, the abrasion aggravation of contact parts such as bearings is avoided, the low-temperature starting lubrication can be realized, and the low-temperature starting performance and reliability of the compressor are effectively improved.
The present disclosure provides a volumetric oil pump mounted on a compressor for low temperature start lubrication, characterized in that the oil pump has a movable oil suction assembly and an oil pump body accommodating the oil suction assembly, the oil suction assembly can move freely in the axial direction of the pump body, the oil pump oil suction assembly is made of a material having a density smaller than that of a liquid refrigerant and a density greater than that of the oil, such as polypropylene, to ensure that the oil suction assembly is always located at the interface of the refrigerant and the lubricating oil.
In some embodiments, the oil absorbing assembly further comprises a limiting structure, wherein the limiting structure can limit the oil absorbing assembly, so that the oil absorbing assembly only moves in the vertical direction. According to the oil suction device, the limiting structure is arranged, the oil suction assembly can be limited to move only in the vertical direction, the limiting structure has the main effect of limiting the circumferential movement of the suction inlet, so that the oil suction assembly can only move in the vertical direction, the situation that oil cannot be sucked is prevented, and on the other hand, the side walls in other directions of the suction section can form an oil pump suction passage, and oil leakage is prevented.
In a first embodiment, as shown in figures 1-5,
In some embodiments, the oil suction assembly includes a cylindrical portion 1041 and an oil suction pipe 1042, one end of the oil suction pipe 1042 communicates with the interior of the cylindrical portion 1041, and the other end is opened to extend upward into the lubricating oil layer in the oil sump 11. This is a preferred configuration of the first embodiment of the present disclosure, and the oil suction unit is constituted by a structure of a cylindrical portion and an oil suction pipe which are capable of moving up and down in the oil pool along with the rise or fall of the interface between the refrigerant liquid surface and the oil, and the oil in the lubricating oil layer is sucked from above the oil-refrigerant interface through the oil suction pipe and introduced into the cylindrical portion.
In some embodiments, the cylinder 1041 has a bottom surface capable of receiving lubricant thereon, and the oil suction pipe 1042 has a bent pipe section structure. The cylinder part has a bottom surface structure, can store lubricating oil in its bottom surface upper end, prevents that lubricating oil from falling and can't accomplish the condition of effective oil absorption, and the oil suction pipe is preferably the return bend structure, can make through the ascending opening formation of bending up opening, absorbs oil from the lubricating oil reservoir effectively.
In some embodiments, the oil guide part comprises a hollow cylinder structure 1023, the cylinder 1041 is disposed in a hollow space of the hollow cylinder structure 1023, the oil pump structure comprises a pump body 102, the pump body 102 is connected with the upper end of the cylinder structure 1023, and the interior of the pump body 102 is communicated with the interior of the cylinder structure 1023, so that oil enters the interior of the pump body 102 through the interior of the cylinder structure 1023. The oil guide part is a preferable structural form of the oil guide part in the first embodiment of the disclosure, namely, the hollow cylinder structure is used for accommodating the cylinder part of the oil suction assembly in the hollow space of the cylinder structure, and the oil suction assembly is guided to move along the hollow space of the cylinder structure, so that the oil sucked by the oil suction assembly can be conducted to the inside of the pump body through the cylinder structure.
In some embodiments, when the limiting structure is further included, the limiting structure includes a limiting groove 1024 formed at a position of the cylindrical structure 1023 in the circumferential direction along the axial direction, and the position where the oil suction pipe 1042 meets the cylindrical portion 1041 is clamped in the limiting groove 1024, so that the cylindrical portion 1041 and the oil suction pipe 1042 can move along the direction of the limiting groove 1024, and the limiting groove 1024 extends along the vertical direction. The limiting structure is a further preferable structural form of the limiting structure, and through the limiting groove formed in the side wall of the cylindrical structure along the axial direction, the oil suction pipe can be clamped and limited in the limiting groove, so that the cylindrical part and the oil suction pipe move integrally and can only move along the vertical direction of the limiting groove, the oil suction is effectively ensured, and the oil cannot be sucked due to the transverse movement.
In some embodiments, a limiting part 105 is further connected to the bottom of the cylinder structure 1023, where the limiting part 105 is located below the cylinder part 1041, and/or the cylinder structure 1023 and the pump body 102 are integrally formed. The oil suction device has the advantages that the limiting part is arranged at the bottom of the cylinder structure in a connecting mode, the limiting effect can be effectively achieved on the lower movement position of the cylinder part of the oil suction assembly, the cylinder part is prevented from being separated from the cylinder structure, the cylinder structure and the pump body can be integrally formed in the manufacturing process, and the structure of compressing the pump body can be formed while oil guiding is achieved.
In some embodiments, the limiting portion 105 is a disk-shaped structure, and/or the limiting portion 105 is fixedly connected to the cylindrical structure 1023. This is the preferred structural form of the spacing portion of the present disclosure, enhancing the spacing action on the spacing assembly.
The following is a further detailed description with reference to the accompanying drawings:
As shown in fig. 1, the scroll compressor mainly comprises a shell assembly 01, a fixed scroll assembly 02, a movable scroll assembly 03, an anti-rotation mechanism 04, an upper support assembly 05, a crankshaft 06, a rotor assembly 07, a motor 08, a lower support assembly 09, an oil pump structure 10 and the like. The motor 08 is fixed to the middle of the housing 01, and the upper support assembly 05 is fixed to the upper portion of the housing 01 by welding or the like. The phase angle difference of the fixed vortex disc assembly 02 and the movable vortex disc assembly 03 is 180 degrees, the fixed vortex disc assembly and the movable vortex disc assembly 03 are oppositely arranged on the upper support assembly 05, the movable vortex disc moves under the drive of the crankshaft 06, and under the restriction of the anti-rotation mechanism 04, the movable vortex disc moves in a translational motion around the center of the crankshaft in a fixed radius, and is meshed with the fixed vortex disc to form a series of crescent closed cavities which are isolated from each other and have continuously-changing volumes. When the compressor is in operation, the rotor assembly 07 drives the crankshaft 06 to rotate, drives the movable vortex disk 03 to move, and the refrigerant entering from the outside of the compressor is sucked into a crescent suction cavity formed by the movable vortex disk 03 and the fixed vortex disk 02, is discharged into the shell through a vent hole on the fixed vortex disk 02 after being compressed, and is discharged out of the compressor through a vent pipe. The bottom of the compressor is an oil pool space 11 for containing lubricating oil in the compressor, and an oil pump structure 10 is arranged at the lower end of a crankshaft of the compressor and used for extracting the lubricating oil accumulated in the oil pool to lubricate and cool parts such as a bearing, a pump body and the like of the compressor.
The specific structure of the oil pump will now be described, and as shown in fig. 2 and 3, a schematic structural diagram of the oil pump structure 10 of the present invention is shown, and a driving structure 061 is installed at the lower end portion of the crankshaft 06 for driving the oil pump structure 10 to operate. The oil pump structure 10 comprises a pump housing 101 for supporting a crank assembly and separating an oil pump space, a pump body 102, as shown in fig. 4, provided with a containing space 1021 for containing an oil pump compression mechanism and an oil storage tank 1022 for containing high-pressure oil, provided with a suction section (a cylindrical structure 1023) at the lower end of the pump body, provided with a limit groove 1024 on the side wall for limiting the position of the suction port, a compression mechanism 103 for positive displacement compression, including but not limited to a gear oil pump as shown in the figure, an oil suction assembly made of a material having a smaller density than the liquid refrigerant and a larger density than the oil, such as polypropylene, and the like, and an oil suction pipe 1042 extending from the side wall of the pump body, provided with an end bent upward to ensure that the opening of the oil suction pipe is higher than the bottom of the suction port, and a limit part 105 mounted at the bottom of the oil suction assembly for limiting the axial position of the oil suction assembly.
The operation of the floating oil pump will now be described, in which the refrigerant inside the compressor is condensed into a liquid state and accumulated in the oil sump 11 at the bottom of the compressor together with the lubricating oil when the compressor is in a low-temperature start-up state. Because the density of the lubricating oil is smaller than that of the liquid refrigerant, obvious layering occurs between the lubricating oil and the refrigerant, the lubricating oil floats above the refrigerant, because the density of the material of the suction inlet is smaller than that of the liquid refrigerant and larger than that of the oil, the suction inlet floats at the interface of the liquid refrigerant and the lubricating oil, the axial position of the suction inlet freely changes along with the height of the liquid level of the refrigerant, and because the suction inlet is provided with a bent pipe section which is bent upwards, the opening section of the suction inlet is always in the lubricating oil, the suction of the suction inlet is ensured to be the lubricating oil during low-temperature starting of the compressor, and abrasion caused by oil shortage of each friction pair is avoided.
In the second embodiment, as shown in fig. 6,
In some embodiments, the oil guiding part comprises a hose 106, and the oil absorbing assembly comprises a floating oil absorbing body 107, so that the floating oil absorbing body 107 is located at the upper end of the refrigerant liquid surface, the floating oil absorbing body 107 is communicated with one end of the hose 106, and the other end of the hose 106 is communicated to the inside of the oil pump structure. The floating oil absorption body is preferably a floating ball structure. This is a preferred form of embodiment of the present disclosure, in which the oil suction assembly is constituted by a structure of a floating oil suction body capable of moving up and down in the oil pool as the interface between the refrigerant liquid surface and the oil rises and falls, and the oil in the lubricating oil layer can be sucked from above the oil-refrigerant interface through the floating oil suction body and introduced into a hose which guides the oil into the oil pump structure.
In some embodiments, when a limit structure is further included, the limit structure includes a limit frame 108, the limit frame 108 is disposed in the oil pool, the limit frame 108 has an inner space extending in a vertical direction, and the floating oil absorption body 107 is disposed in the inner space. The limiting frame is preferably of a hollow rectangular structure. The limiting structure is a further preferable structural form of the limiting structure in the second embodiment of the disclosure, and the floating oil absorption body can be clamped and arranged and limited in the limiting structure by arranging the limiting frame, so that the floating oil absorption body can only move along the vertical direction of the limiting groove, the oil is effectively ensured to be sucked, and the oil cannot be sucked due to transverse movement.
As shown in fig. 6, an alternative embodiment of the oil pump structure 10 is specifically described as comprising a pump housing 101 for supporting a crankshaft assembly and partitioning an oil pump space, a pump body 102 having an inner space for accommodating a compression mechanism and a suction passage, a compression mechanism 103 for performing positive displacement compression, wherein the pump body suction passage is in communication with a light hose 106, which is freely bendable, a floating oil suction body 107 made of a material having a lower density than a liquid refrigerant and a higher density than the oil, such as polypropylene, is in communication with the end of the hose 106, and a stopper 108 for restricting the position of the floating oil suction body 107 so as to be movable only in the axial direction.
When the compressor is started at low temperature, the refrigerant and the refrigerating oil in the shell are obviously layered, and the lubricating oil floats above the refrigerant. Because the density of the material of the suction inlet is smaller than that of the liquid refrigerant and larger than that of the oil, the suction inlet floats at the interface of the liquid refrigerant and the lubricating oil at the moment, the axial position of the suction inlet freely changes along with the liquid level height of the refrigerant in the limit frame, the suction of the lubricating oil during low-temperature starting of the compressor is ensured, and the abrasion of each friction pair caused by oil shortage is avoided.
In some embodiments, the oil pump structure includes a pump body 102 and a compression mechanism 103, a containing space 1021 for containing the compression mechanism 103 therein is provided in the pump body 102, a conducting groove 1025 is provided at the bottom of the pump body 102, and the lower end of the conducting groove 1025 is communicated with the oil guiding part and sucks oil from the oil guiding part, and the oil is introduced into the compression mechanism 103 through the conducting groove 1025. The compression mechanism is preferably a gear oil pump. This is a preferred form of construction of the oil pump structure of the present disclosure, whereby the pump body and the compression mechanism cooperate to form an internal low pressure to draw oil from the oil sump into the oil pump structure, and the conduction groove draws oil from the oil guide into the compression mechanism.
In some embodiments, an oil storage tank 1022 is further provided on the bottom upper end surface of the pump body 102, the oil storage tank 1022 is of a sink structure, and the compression mechanism 103 discharges oil to the oil storage tank 1022;
The scroll compressor further includes a crankshaft 06, the crankshaft 06 has a crankshaft hole 062 therein, and the oil reservoir 1022 is capable of communicating with the interior of the crankshaft hole 062 to suck oil through the oil reservoir 1022 and into the crankshaft hole 062.
The oil storage tank is arranged on the upper end face of the bottom of the pump body, oil pumped by the compression mechanism can be stored and pumped into a crankshaft hole of the crankshaft, and the transmission effect of lubricating oil in the crankshaft hole is completed.
In some embodiments, a lower end of the crankshaft 06 is provided with a driving structure 061, which is connected to the compression mechanism 103 to drive the compression mechanism 103 to operate. The compression mechanism in the pump body can be driven to operate through the driving structure at the lower end of the crankshaft, the driving structure is preferably fixedly arranged in a crankshaft hole of the crankshaft, and integrally rotates along with rotation of the crankshaft, so that the compression mechanism is driven to operate.
In some embodiments, the driving structure 061 is disposed in the crank hole 062 and located at the lower end of the crank shaft 06, the pump body 102 is connected to the lower end of the crank shaft 06, and a pump casing 101 is further disposed between the upper end surface of the pump body 102 and the lower end surface of the crank shaft 06;
The pump housing 101 has an accommodation hole through which a portion accommodating the driving structure 061 passes to interface with the compression mechanism 103 to drive the compression mechanism 103 to operate.
This is a further preferred form of construction of the present disclosure, through which a closed space of the oil pump structure can be formed to facilitate formation of low pressure to suck oil, and the driving structure is penetrated into the pump body through the receiving hole to drive the compression mechanism to operate.
The present disclosure also provides an air conditioner comprising the scroll compressor of any one of the preceding claims.
The foregoing description of the preferred embodiments of the present disclosure is not intended to limit the disclosure, but is intended to cover any modifications, equivalents, and alternatives falling within the spirit and principles of the present disclosure. The foregoing is merely a preferred embodiment of the present disclosure, and it should be noted that, for a person of ordinary skill in the art, several improvements and modifications can be made without departing from the technical principles of the present disclosure, and these improvements and modifications should also be considered as the protection scope of the present disclosure.
Claims (8)
1. A scroll compressor is characterized by comprising:
The oil pump structure (10), the oil absorption subassembly, lead oily portion and oil sump (11), oil sump (11) are located the bottom inside of scroll compressor, the oil absorption subassembly set up in oil sump (11), the material density of oil absorption subassembly is greater than the density of lubricating oil, and is less than the density of refrigerant for the oil absorption subassembly floats on the liquid surface of refrigerant, the one end of oil guide portion with oil absorption subassembly intercommunication, the other end with oil pump structure's inside intercommunication, the oil absorption subassembly can draw lubricating oil from oil sump (11) and through lead oily portion water conservancy diversion to in oil pump structure (10);
the oil absorption assembly is characterized by further comprising a limiting structure, wherein the limiting structure can limit the oil absorption assembly, so that the oil absorption assembly only moves in the vertical direction;
The oil suction assembly comprises a cylinder part (1041) and an oil suction pipe (1042), wherein one end of the oil suction pipe (1042) is communicated with the inside of the cylinder part (1041), and the other end of the oil suction pipe is opened and extends upwards into a lubricating oil layer in the oil tank (11);
The cylinder part (1041) is provided with a bottom surface capable of containing lubricating oil thereon, and the oil suction pipe (1042) is of a bent pipe section structure;
The oil pump comprises a pump body (102), wherein the pump body (102) is connected with the upper end of the cylinder structure (1023), and the interior of the pump body (102) is communicated with the interior of the cylinder structure (1023) so that oil enters the interior of the pump body (102) through the interior of the cylinder structure (1023);
The limiting structure comprises a limiting groove (1024) which is formed in a position of the circular direction of the cylinder structure (1023) along the axial direction, and the position, where the oil suction pipe (1042) is connected with the cylinder part (1041), of the limiting groove (1024) is clamped, so that the cylinder part (1041) and the oil suction pipe (1042) can move along the direction of the limiting groove (1024), and the limiting groove (1024) extends along the vertical direction.
2. The scroll compressor of claim 1, wherein:
The bottom of the cylinder structure (1023) is also connected with a limiting part (105), the limiting part (105) is positioned below the cylinder part (1041), and/or the cylinder structure (1023) and the pump body (102) are integrally formed.
3. The scroll compressor of claim 2, wherein:
The limiting part (105) is in a disc-shaped structure, and/or the limiting part (105) is fixedly connected with the cylindrical structure (1023).
4. A scroll compressor as claimed in any one of claims 1 to 3, wherein:
The oil pump structure comprises a pump body (102) and a compression mechanism (103), wherein an accommodating space (1021) for accommodating the compression mechanism (103) is formed in the pump body (102), a conducting groove (1025) is formed in the bottom of the pump body (102), the lower end of the conducting groove (1025) is communicated with the oil guiding part and sucks oil from the oil guiding part, and the oil enters the compression mechanism (103) through the conducting groove (1025).
5. The scroll compressor of claim 4, wherein:
An oil storage tank (1022) is further formed in the upper end face of the bottom of the pump body (102), the oil storage tank (1022) is of a sinking tank structure, and oil discharged by the compression mechanism (103) reaches the oil storage tank (1022);
The scroll compressor further comprises a crankshaft (06), wherein a crankshaft hole (062) is formed in the crankshaft (06), and the oil storage tank (1022) can be communicated with the interior of the crankshaft hole (062) so as to suck oil through the oil storage tank (1022) and enter the crankshaft hole (062).
6. The scroll compressor of claim 5, wherein:
The lower end of the crankshaft (06) is provided with a driving structure (061), and the driving structure is connected with the compression mechanism (103) to drive the compression mechanism (103) to operate.
7. The scroll compressor of claim 6, wherein:
The driving structure (061) is arranged in the crank hole (062) and is positioned at the lower end of the crank shaft (06), the pump body (102) is connected and arranged at the lower end of the crank shaft (06), and a pump shell (101) is further arranged between the upper end face of the pump body (102) and the lower end face of the crank shaft (06);
The pump housing (101) has a receiving hole through which a portion of the driving structure (061) passes to interface with the compression mechanism (103) to drive the compression mechanism (103) to operate.
8. An air conditioner, characterized in that:
Comprising the scroll compressor of any one of claims 1-7.
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| CN202011430495.3A CN112483406B (en) | 2020-12-07 | 2020-12-07 | Scroll compressor and air conditioner |
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| CN202011430495.3A CN112483406B (en) | 2020-12-07 | 2020-12-07 | Scroll compressor and air conditioner |
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| CN115199551B (en) * | 2022-08-10 | 2024-11-05 | 苏州英华特涡旋技术股份有限公司 | Silencing cover assembly and oil supply structure comprising same |
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| CN214196669U (en) * | 2020-12-07 | 2021-09-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0542689U (en) * | 1991-11-06 | 1993-06-11 | ダイキン工業株式会社 | Hermetic compressor |
| JPH08312560A (en) * | 1995-05-17 | 1996-11-26 | Matsushita Electric Ind Co Ltd | Electric compressor |
| JPH09126173A (en) * | 1995-11-02 | 1997-05-13 | Matsushita Refrig Co Ltd | Rotary type compressor |
| JP2001214860A (en) * | 2000-02-03 | 2001-08-10 | Sanyo Electric Co Ltd | Refrigerant compressor |
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| CN214196669U (en) * | 2020-12-07 | 2021-09-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor and air conditioner |
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