CN108679889B - Refrigerating system and oil separator - Google Patents
Refrigerating system and oil separator Download PDFInfo
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- CN108679889B CN108679889B CN201810942529.3A CN201810942529A CN108679889B CN 108679889 B CN108679889 B CN 108679889B CN 201810942529 A CN201810942529 A CN 201810942529A CN 108679889 B CN108679889 B CN 108679889B
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- oil separator
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- 238000000926 separation method Methods 0.000 claims abstract description 99
- 238000005057 refrigeration Methods 0.000 claims abstract description 28
- 230000005484 gravity Effects 0.000 claims abstract description 18
- 238000005192 partition Methods 0.000 claims description 51
- 238000001816 cooling Methods 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 26
- 239000000203 mixture Substances 0.000 abstract description 20
- 230000000694 effects Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention relates to an oil separator and a refrigerating system, wherein the oil separator comprises: a housing having an interior cavity; the volume adjusting mechanism is arranged in the shell and divides the inner cavity into a separation cavity with variable volume and an oil collecting cavity with variable volume, and the oil collecting cavity is positioned in the gravity direction of the separation cavity; and the centrifugal oil separating piece is rotatably arranged in the separation cavity, and oil drops are settled into the oil collecting cavity in the gravity direction of the separation cavity under the action of gravity, so that the oil separating work of the gas-liquid mixture is completed. And moreover, the volume-adjustable oil collecting cavity is formed in the shell through the volume adjusting mechanism, and the oil collecting cavity can be adjusted to different volumes according to actual requirements. For different working conditions of the same refrigeration system, a plurality of oil separators are not required to be arranged for various working conditions in the refrigeration system, and the oil separators can adapt to different requirements for the volume of the oil collecting cavity under different working conditions by only adjusting the volume adjusting mechanism, so that the universality of the oil separators is good.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a refrigeration system and an oil separator.
Background
The oil separator is a main component in the refrigeration system and is used for separating a mixture of gas and liquid phases and has the function of oil storage, and a certain volume of oil is stored at the bottom of the oil separator so as to prepare the oil required by the operation of a compressor in the refrigeration system.
Generally, refrigeration systems are various, each refrigeration system has different working condition requirements, and oil separators with different oil storage volumes are required to be selected according to different working conditions, so that corresponding oil separators are required to be arranged under each working condition, a plurality of oil separators with different oil storage volumes are required to be arranged in the refrigeration system, one oil separator cannot be used under the working conditions, and the universality of the oil separators is poor.
Disclosure of Invention
Accordingly, it is necessary to provide an oil separator with good versatility against the problem of poor versatility of a general oil separator.
An oil separator comprising:
a housing having an interior cavity;
the volume adjusting mechanism is arranged in the shell and divides the inner cavity into a separation cavity with variable volume and an oil collecting cavity with variable volume, and the oil collecting cavity is positioned in the gravity direction of the separation cavity; and
the centrifugal oil separating piece is rotatably arranged in the separating cavity.
In the oil separator, the volume adjusting mechanism is arranged in the shell, the inner cavity of the shell is divided into the separation cavity with adjustable volume and the oil collecting cavity with adjustable volume, the centrifugal oil separating piece is arranged in the separation cavity, after the gas-liquid mixture is introduced into the separation cavity, oil drops are separated under the action of the centrifugal oil separating piece, and the oil drops are settled into the oil collecting cavity in the gravity direction of the separation cavity under the action of gravity, so that the oil separating work of the gas-liquid mixture is completed. And moreover, the volume-adjustable oil collecting cavity is formed in the shell through the volume adjusting mechanism, and the oil collecting cavity can be adjusted to different volumes according to actual requirements. Therefore, for different working conditions of the same refrigeration system, a plurality of oil separators are not required to be arranged for various working conditions in the refrigeration system, different requirements for the volume of the oil collecting cavity under different working conditions can be met by only adjusting the volume adjusting mechanism, the universality of the oil separators is good, the development cost of refrigeration products can be saved, the development and purchasing period is shortened, and the speed of putting the refrigeration products into the market is improved. In one embodiment, the volume adjustment mechanism includes a partition that divides the inner chamber into the separation chamber and the oil collecting chamber on both sides of the partition, and a transmission member that provides a driving force for the partition to change the volumes of the separation chamber and the oil collecting chamber.
In one embodiment, the transmission part comprises a load-increasing and load-decreasing bin which is positioned in the oil collecting cavity and connected with the partition piece, a pressure adjusting cavity is formed between the load-increasing and load-decreasing bin and the partition piece, and the partition piece changes the volumes of the separation cavity and the oil collecting cavity according to the pressure in the pressure adjusting cavity.
In one embodiment, the transmission part further comprises a medium injection pipe and a medium flow medium outflow pipe which are both communicated with the pressure regulating cavity, and the medium injection pipe and the medium outflow pipe are both arranged on the load increasing and reducing bin in a telescopic mode.
In one embodiment, the device further comprises a first controller and a volume sensor, wherein the volume sensor is arranged in the oil collecting cavity and used for detecting the actual volume of the oil collecting cavity, the first controller controls the pressure regulating cavity to reduce pressure when the actual volume is larger than a target volume, and the first controller controls the pressure regulating cavity to increase pressure when the actual volume is smaller than the target volume.
In one embodiment, the separator is provided with an air inlet communicated with the separation cavity, the oil separator further comprises a telescopic air inlet pipe, one end of the telescopic air inlet pipe is located in the oil collecting cavity and connected with the air inlet of the separator, and the other end of the telescopic air inlet pipe is located outside the shell.
In one embodiment, the volume adjusting mechanism further comprises a fixing rod fixed in the inner cavity along the axial direction of the shell, and the volume adjusting mechanism is slidably sleeved outside the fixing rod and moves along the fixing rod.
In one embodiment, the volume adjusting mechanism further comprises an elastic piece, the elastic piece is sleeved outside the fixing rod, one end of the elastic piece is fixed relative to the fixing rod, and the other end of the elastic piece is abutted to the volume adjusting mechanism and stretches along the fixing rod under the action of the volume adjusting mechanism.
In one embodiment, the centrifugal separator further comprises a cooling oil separator, wherein the cooling oil separator is arranged in the separation cavity and is positioned on an air outlet path of the gas discharged by the centrifugal oil separator.
In one embodiment, the centrifugal oil separator further comprises an air outlet plate, wherein the air outlet plate is arranged in the separation cavity and divides the separation cavity into a main separation cavity and a standby separation cavity, the centrifugal oil separator is arranged in the main separation cavity, the cooling oil separator is arranged in the standby separation cavity, and an air passing port which is communicated with the main separation cavity and the standby separation cavity is formed in the air outlet plate.
In one embodiment, the cooling oil distributing part further comprises a second controller and an oil content sensor, wherein the shell is provided with an air outlet communicated with the standby separation cavity, the oil content sensor is arranged at the air outlet and used for detecting the actual oil content of air at the air outlet, and the second controller is used for controlling the cooling oil distributing part to start working when the actual oil content exceeds the standard oil content.
In one embodiment, the centrifugal oil separator is connected with the volume adjusting mechanism, and the centrifugal oil separator and the volume adjusting mechanism synchronously move in the inner cavity.
In one embodiment, the oil suction device further comprises an oil suction plate arranged on the cavity wall of the inner cavity, the oil suction plate is positioned on a centrifugal path of oil drops generated by the centrifugal separation of the centrifugal oil separation piece, and the oil collection cavity is positioned in the gravity direction of the oil drops in the oil suction plate.
The invention also provides a refrigerating system which comprises a compressor, an evaporator, a condenser and the oil separator, wherein an air outlet of the compressor is connected with the condenser, an air suction port of the compressor is connected with the evaporator, the condenser is connected with the evaporator, and the oil separator is arranged between the compressor and the condenser.
Drawings
FIG. 1 is a schematic cross-sectional view of an oil separator according to an embodiment of the present invention;
FIG. 2 is a schematic partial cross-sectional view of the oil separator of FIG. 1;
FIG. 3 is a schematic view of a portion of the oil separator shown in FIG. 1;
fig. 4 is a schematic diagram of a refrigeration system according to an embodiment of the invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1-3, in an embodiment of the present invention, an oil separator 100 is provided, which includes a housing 10 having an inner cavity, a volume adjusting mechanism 30 and a centrifugal oil separating member 50, wherein the volume adjusting mechanism 30 is disposed in the housing 10 and separates the inner cavity to form a separating cavity 11 with a variable volume and an oil collecting cavity 13 with a variable volume, the centrifugal oil separating member 50 is rotatably disposed in the separating cavity 11, and the oil collecting cavity 13 is located in a gravity direction of the separating cavity 11. When the centrifugal oil separating member 50 rotates in the separation cavity 11, the liquid in the gas-liquid mixture in the separation cavity 11 can be centrifugally thrown out, and the thrown liquid is settled into the oil collecting cavity 13 in the gravity direction of the separation cavity 11 under the action of gravity, so that the oil separating work of the gas-liquid mixture is completed.
And, through the volume adjustable oil receiving chamber 13 of formation volume in shell 10 of volume adjustment mechanism 30, oil receiving chamber 13 can adjust to different volumes according to actual demand. Thus, for different working conditions of the same refrigeration system 200, a plurality of oil separators 100 are not required to be arranged for various working conditions in the refrigeration system 200, and different requirements for the volume of the oil collecting cavity 13 under different working conditions can be met by only adjusting the volume adjusting mechanism 30, so that the oil separators 100 are good in universality, the development cost of refrigeration products can be saved, the development and purchase period is shortened, and the speed of putting the refrigeration products into the market is improved.
In some embodiments, the volume adjustment mechanism 30 includes a partition 32 and a transmission member 34, the partition 32 dividing the interior chamber into a separation chamber 11 and a collection chamber 13 on either side of the partition 32, the transmission member 34 providing a driving force to the partition 32 that varies the volumes of the separation chamber 11 and the collection chamber 13. The partition 323 moves in the inner cavity of the housing 10 by the transmission member 34, so that the volumes of the separation chamber 11 and the oil collecting chamber 13 on both sides of the partition 323 are changed. Specifically, when the partition 32 reciprocates in the axial direction of the casing 10, the volume of the separation chamber 11 decreases when the partition 32 moves in the direction approaching the separation chamber 11, the volume of the oil collecting chamber 13 adjacent to the separation chamber 11 increases, and when the partition 32 moves in the direction approaching the oil collecting chamber 13, the volume of the oil collecting chamber 13 decreases, the volume of the separation chamber 11 adjacent to the oil collecting chamber 13 increases, and by moving the position of the partition 32 in the casing 10, the oil collecting chamber 13 of different volumes can be formed.
In some embodiments, the partition 32 is provided with an air inlet 321, the housing 10 is provided with an air outlet 12, and the air inlet 321 and the air outlet 12 are respectively located at two sides of the centrifugal oil separator 50 and are both communicated with the separation cavity 11. The centrifugal oil separating member 50 drives the gas-liquid mixture entering from the air inlet 321 to centrifugally rotate, oil in the gas-liquid mixture is thrown out and enters the oil collecting cavity 13 under the action of gravity, and the separated gas continues to move upwards to be discharged from the air outlet 12, so that the function of separating oil in the gas-liquid mixture is realized. Optionally, an air outlet 12 is formed in the top of the shell 10, and the air outlet 12 is communicated with the separation cavity 11 and is used for discharging gas after gas-liquid separation; the bottom of the casing 10 is provided with an oil return port, which is communicated with the oil receiving cavity and is used for discharging oil in the oil receiving cavity to the compressor 210.
Further, the oil separator 100 includes a telescopic air intake pipe 20, one end of the telescopic air intake pipe 20 is located in the oil receiving chamber 13 and connected to the air intake of the partition 32, and the other end of the telescopic air intake pipe 20 is located outside the housing 10. In this way, one end of the telescopic air inlet pipe 20 passes through the casing 10 to enter the oil collecting cavity and is connected to the air inlet 321 of the partition 32, when the partition 32 moves along the axial direction of the casing 10, the telescopic air inlet pipe 20 can move along with the partition 32 through self expansion, and the air-liquid mixture is introduced into the separation cavity 11 through the telescopic air inlet pipe 20, so that the function of adjusting the volume through moving and adjusting the oil collecting cavity 13 is not interfered.
In some embodiments, the transmission component 34 includes a load-reducing chamber 341 located in the oil-receiving chamber 13 and connected to the partition 32, a pressure-adjusting chamber 342 is formed between the load-reducing chamber 341 and the partition 32, and the partition 32 changes the volumes of the separation chamber 11 and the oil-receiving chamber 13 according to the pressure in the pressure-adjusting chamber 342, that is, when the pressure in the pressure-adjusting chamber 342 increases and decreases, the partition 32 moves in a direction approaching and separating from the separation chamber 11, respectively, and the position of the partition 32 is adjusted by changing the pressure in the pressure-adjusting chamber 342. As shown in fig. 1, specifically, when the pressure in the pressure regulating chamber 342 is increased, the partition 32 moves upward against gravity under the action of high pressure, and the volume of the oil collecting chamber 13 becomes large; when the pressure in the pressure regulating chamber 342 is reduced, the partition 32 moves downward, and the volume of the oil collecting chamber 13 becomes smaller.
Further, the transmission member 34 includes a medium injection pipe 343 and a medium outflow pipe 345, both of which are communicated with the pressure adjusting chamber 343, and the medium injection pipe 343 and the medium outflow pipe 345 are telescopically disposed on the load reducing chamber 341. In this way, when the load reducing chamber 341 and the partition 32 move together, the medium injection pipe 343 and the medium outflow pipe 345 can adaptively expand and contract along with the load reducing chamber 341 without affecting the movement of the load reducing chamber 341.
Also, the medium injection pipe 343 may allow high-pressure fluid to pass into the pressure adjustment chamber 342, and the medium outflow pipe 345 may allow high-pressure fluid to flow out of the pressure adjustment chamber 342. When the medium injection pipe 343 allows high fluid to flow into the pressure adjusting chamber 342 and the medium outflow pipe 345 is closed, the load-reducing chamber 341 and the partition 32 move upward under the impact of the high-pressure fluid, the volume of the oil receiving chamber 13 becomes large, and the medium injection pipe 343 and the medium outflow pipe 345 are correspondingly elongated. When both the medium injection pipe 343 and the medium outflow pipe 345 are closed, the high-pressure fluid pressure in the pressure regulating chamber 342 is not changed any more, the partition 32 remains balanced and stationary, and the volume of the oil collecting chamber 13 remains unchanged. When the medium injection pipe 343 is closed and the medium outflow pipe 345 is opened to allow the high-pressure fluid to flow out, the pressure in the pressure adjusting chamber 342 is reduced, the partition 32 is lowered to move downward, the volume of the oil receiving chamber 13 is reduced, and the medium injection pipe 343 and the medium outflow pipe 345 follow the partition 32 to move downward and compress. Thus, when the refrigeration condition changes due to the change of the refrigeration coincidence, the position of the partition 32 is controlled by controlling the opening and closing of the medium injection pipe 343 and the medium outflow pipe 345.
Specifically, the transmission component 34 further includes a flow loading valve 347 and a flow unloading valve 349, where the flow loading valve 347 and the flow unloading valve 349 are respectively disposed on the medium injection pipe 343 and the medium outflow pipe 345, when the volume of the oil collecting cavity 13 needs to be increased, the flow loading valve 347 is opened, the flow unloading valve 349 is closed, and high-pressure fluid is continuously injected into the pressure regulating cavity 342 to drive the partition 32 to move towards the direction approaching the separation cavity 11; when the volume of the oil collecting cavity 13 needs to be reduced, the flow loading valve 347 is closed, the flow unloading valve 349 is opened, the high-pressure fluid in the pressure regulating cavity 342 is discharged, the pressure in the pressure regulating cavity 342 is reduced, and the partition 32 is driven to be certain in a direction away from the separation cavity 11.
In some embodiments, the oil separator 100 includes a first controller (not shown) and a volume sensor 61, the volume sensor 61 being disposed in the oil receiving chamber 13 for detecting an actual volume of the oil receiving chamber 13, the first controller controlling the pressure regulating chamber 342 to reduce the pressure when the actual volume is greater than a target volume, so as to move the partition 32 in a reverse direction toward the oil receiving chamber 13, thereby reducing the volume of the oil receiving chamber 13 to the target volume; when the actual volume is smaller than the target volume, the first controller controls the pressure adjustment chamber 342 to increase the pressure, so that the partition 32 moves in a direction toward the separation chamber 11, and the volume of the oil collection chamber 13 increases to the target volume.
Specifically, the first controller controls the pressure within the pressure regulating chamber 342 by controlling the flow charge valve 347 and the flow relief valve 349. The first controller controls the flow charge valve 347 to open and the flow relief valve 349 to close to boost pressure and vice versa.
In some embodiments, the volume adjustment mechanism 30 includes a fixed rod 35 fixed within the housing 10 along the axial direction of the housing 10, the divider 32 slidably fits over the fixed rod 35, and moves along the fixed rod 35, the fixed rod 35 providing a path of movement for the divider 32, guiding the divider 32 to move in the axial direction of the housing 10.
Further, the volume adjusting mechanism 30 further includes an elastic member 36, the elastic member 36 is sleeved outside the fixing rod 35, one end of the elastic member 36 is fixed relative to the fixing rod 35, and the other end of the elastic member 36 abuts against the volume adjusting mechanism 30 and stretches under the action of the volume adjusting mechanism 30. When the high-pressure fluid is injected into the volume adjusting chamber 342 to raise the pressure of the pressure adjusting chamber 342 to be higher than the elasticity of the elastic member 36, the volume adjusting mechanism 30 moves in the direction approaching the separation chamber 11, compresses the elastic member 36, and increases the volume of the oil receiving chamber 13; when the high-pressure fluid in the volume adjusting mechanism 30 flows out to reduce the pressure in the pressure adjusting chamber 342, the volume adjusting mechanism 30 is driven by the restoring force of the deformation of the compression elastic member 36 to move in a direction away from the separation chamber 11, and the volume of the oil collecting chamber 13 is reduced. The elastic member 36 is used for buffering the volume adjusting mechanism 30 moving toward the separation chamber 11 and storing energy for the volume adjusting mechanism 30 moving away from the separation chamber 11.
In some embodiments, the centrifugal oil separating member 50 is connected with the volume adjusting mechanism 30, and the centrifugal oil separating member 50 and the volume adjusting mechanism 30 move synchronously in the inner cavity, so that the volumes of the separation chamber 11 and the oil collecting chamber 13 can be flexibly changed when the centrifugal oil separating member 50 and the volume adjusting mechanism 30 move synchronously. Specifically, the volume adjusting mechanism 30 further includes a connecting member 40, the connecting member 40 is slidably sleeved outside the fixing rod 35, the partition member 32 and the centrifugal oil separating member 50 are both disposed on the connecting member 40, one end of the elastic member 36 is abutted against the connecting member 40, the other end of the elastic member 36 is fixed relative to the fixing rod 35, the partition member 32, the centrifugal oil separating member 50 and the connecting member 40 synchronously move along the fixing rod 35, and meanwhile, the elastic member 36 is extruded or released by the connecting member 40 to buffer the movement of the transmission member 34 and the centrifugal oil separating member 50. It will be appreciated that in other embodiments, the centrifugal separator 50 may not move synchronously with the separator 32, but the separator 32 alone may move between the centrifugal separator 50 and the bottom of the housing, as not limited herein.
In some embodiments, the oil separator 100 further includes an oil absorbing plate 70 disposed on a wall of the inner cavity of the housing 10, where the oil absorbing plate 70 is located on a centrifugal path of oil droplets generated by the centrifugation of the centrifugal oil separator 50, and is used to absorb the oil droplets thrown from the centrifugal oil separator 50, so as to prevent the separated oil from being thrown to the inner wall of the housing 10 to generate secondary splashing, which results in poor separation effect. And, the oil collecting cavity 13 is located in the gravity direction of the oil drop in the oil absorbing plate 70, the oil drop absorbed in the oil absorbing plate 70 is separated from the oil absorbing plate 70 and is settled in the oil collecting cavity 13 under the action of gravity, and the oil drop separated from the gas-liquid mixture is collected in the oil collecting cavity 13.
In some embodiments, the oil separator 100 further includes a cooling oil separator 90, where the cooling oil separator 90 is disposed in the separation chamber 11 and is located in the outlet path of the gas discharged from the centrifugal oil separator 50. The cooling oil separating piece 90 is used for secondary separation, the gas-liquid mixture separated by the centrifugal oil separating piece 50 flows through the cooling oil separating piece 90, the gas-liquid mixture at the cooling oil separating piece 90 is rapidly cooled, liquid therein is cooled and then separated by sedimentation, the liquid automatically falls into the oil collecting cavity 13 under the action of gravity, and the gas continuously flows upwards and is discharged from the air outlet 12, so that the gas-liquid separation is completed, the oil separation effect is further improved, and the purpose of high-efficiency separation is achieved. Specifically, the cooling oil separating member 90 is disposed above the oil absorbing plate 70, and the liquid separated and settled in the cooling oil separating member 90 can be diluted by the oil absorbing plate 70 and then enter the oil receiving cavity 13.
Further, the oil separator 100 further includes an air outlet plate 80, the air outlet plate 80 is disposed in the separation chamber 11 and separates the separation chamber 11 into a main separation chamber 112 and a standby separation chamber 114, the centrifugal oil separator 50 is disposed in the main separation chamber 112, the cooling oil separator 90 is disposed in the standby separation chamber 114, the air outlet plate 80 is provided with an air passing port 81 communicating the main separation chamber 112 and the standby separation chamber 114, and the housing 10 is provided with an air outlet 12 communicating with the standby separation chamber 114. Thus, when the gas-liquid mixture in the main separation chamber 112 enters the standby separation chamber 114 from the gas passing port 81 on the gas outlet plate 80 after the separation is completed, the secondary separation can be performed by the cooling oil separating member 90 in the standby separation chamber 114, so as to improve the separation effect. Specifically, the cooling oil separator 90 is a heat exchanger, and is used for cooling the gas-liquid mixture. Specifically, the air outlet plate 80 is disposed at one end of the fixing rod 35 away from the partition 32, one end of the oil suction plate 70 communicates with the oil receiving chamber 13, and the other end of the oil suction plate 70 is provided with the air outlet plate 80.
In some embodiments, the oil separator 100 further includes a second controller (not shown) and an oil content sensor 63, wherein the oil content sensor 63 is disposed at the gas outlet 12 and is configured to detect an actual oil content of the gas at the gas outlet 12, and the second controller controls the cooling oil separator 90 to start operating when the actual oil content exceeds a standard oil content. After the gas-liquid mixture is separated by the centrifugal oil separating piece 50, if the oil content at the gas outlet 12 is high, the cooling oil separating piece 90 can be started to perform secondary separation work if the oil content is not satisfactory, so that the oil content of the gas at the gas outlet 12 is further reduced, and the separation effect is ensured.
In the oil separator 100, the volume adjusting mechanism 30 is disposed in the housing 10, and divides the inner cavity of the housing 10 into the separation chamber 11 with adjustable volume and the oil collecting chamber 13 with adjustable volume, a centrifugal oil separating member is disposed in the separation chamber 11, after the gas-liquid mixture is introduced into the separation chamber 11, oil drops are separated under the action of the centrifugal oil separating member 50, and the oil drops are settled into the oil collecting chamber 13 in the gravity direction of the separation chamber 11 under the action of gravity, so as to complete the oil separating operation of the gas-liquid mixture. And, through the volume adjustable oil receiving chamber 13 of formation volume in shell 10 of volume adjustment mechanism 30, oil receiving chamber 13 can adjust to different volumes according to actual demand. Thus, for different working conditions of the same refrigeration system 200, a plurality of oil separators 100 are not required to be arranged for various working conditions in the refrigeration system 200, and different requirements for the volume of the oil collecting cavity 13 under different working conditions can be met by only adjusting the volume adjusting mechanism 30, so that the oil separators 100 are good in universality, the development cost of refrigeration products can be saved, the development and purchase period is shortened, and the speed of putting the refrigeration products into the market is improved.
As shown in fig. 4, in an embodiment of the present invention, there is further provided a refrigeration system 200, including a compressor 210, a condenser 230, an evaporator 250 and the oil separator 100 described above, wherein an exhaust port of the compressor 210 is connected to the condenser 230, an intake port of the compressor 210 is connected to the evaporator 250, the condenser 230 is connected to the evaporator 250, and the oil separator 100 is disposed between the compressor 210 and the condenser 230. The gas-liquid mixture in the compressor 210 enters the oil separator 100, the gas discharged after the gas-liquid mixture is separated by the oil separator 100 enters the condenser 230, then enters the evaporator 250 through the throttling part 270 by the condenser 230, finally enters the compressor 210 through the air suction port by the evaporator 250, and a refrigeration cycle is completed. Under different refrigeration working conditions, the volume of the oil collecting cavity 13 can be adjusted by only adjusting the volume adjusting mechanism 30 in the oil separator 100, so that different requirements on the oil storage volume under different working conditions can be met, and the universality of the oil separator 100 is higher.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (14)
1. An oil separator (100), characterized by comprising:
a shell (10) with an inner cavity, wherein an air outlet (12) is formed in the shell (10);
the volume adjusting mechanism (30) is arranged in the shell (10), the volume adjusting mechanism (30) comprises a partition (32) and a transmission part (34), the partition (32) divides the inner cavity into a separation cavity (11) which is positioned at two sides of the partition (32) and has a variable volume and an oil collecting cavity (13) which has a variable volume, the oil collecting cavity (13) is positioned in the gravity direction of the separation cavity (11), and the transmission part (34) provides a driving force for changing the volumes of the separation cavity (11) and the oil collecting cavity (13) for the partition (32); the transmission part (34) comprises a load-reducing bin (341) which is positioned in the oil collecting cavity (13) and connected with the partition piece (32), a pressure adjusting cavity (342) is formed between the load-reducing bin (341) and the partition piece (32), and the partition piece (32) changes the volumes of the separation cavity (11) and the oil collecting cavity (13) according to the pressure in the pressure adjusting cavity (342); and
a centrifugal oil separator (50) rotatably disposed in the separation chamber (11);
the separation piece (32) is provided with an air inlet (321), and the air inlet (321) and the air outlet (12) are respectively positioned at two sides of the centrifugal oil separation piece (50) and are communicated with the separation cavity (11).
2. The oil separator (100) according to claim 1, wherein an oil return port is provided at the bottom of the housing (10), and the oil return port is communicated with the oil receiving chamber (13) for discharging oil in the oil receiving chamber (13) to the compressor (210).
3. The oil separator (100) of claim 1, wherein the transmission member (34) further comprises a medium injection tube (343) and a medium outflow tube (345) each in communication with the pressure regulating chamber (342), and wherein the medium injection tube (343) and the medium outflow tube (345) are each telescopically disposed on the load-and-unload chamber (341).
4. An oil separator (100) according to claim 3, wherein the transmission member (34) further comprises a flow loading valve (347) and a flow unloading valve (349), the flow loading valve (347) and the flow unloading valve (349) are respectively arranged on the medium injection pipe (343) and the medium outflow pipe (345), when the volume of the oil collecting cavity (13) needs to be increased, the flow loading valve (347) is opened, the flow unloading valve (349) is closed, high-pressure fluid is continuously injected into the pressure regulating cavity (342), and the separator (32) is driven to move towards the direction approaching the separation cavity (11); when the volume of the oil collecting cavity (13) needs to be reduced, the flow loading valve (347) is closed, the flow unloading valve (349) is opened, high-pressure fluid in the pressure regulating cavity (342) is discharged, the pressure in the pressure regulating cavity (342) is reduced, and the partition piece (32) is driven to move in a direction away from the separation cavity (11).
5. The oil separator (100) of claim 1, further comprising a first controller and a volume sensor (61), the volume sensor (61) being disposed within the oil receiving chamber (13) for detecting an actual volume of the oil receiving chamber (13), the first controller controlling depressurization within the pressure regulating chamber (342) when the actual volume is greater than a target volume, the first controller controlling depressurization within the pressure regulating chamber (342) when the actual volume is less than the target volume.
6. The oil separator (100) according to claim 1, wherein the partition (32) is provided with the air inlet (321) communicated with the separation cavity (11), the oil separator (100) further comprises a telescopic air inlet pipe (20), one end of the telescopic air inlet pipe (20) is located in the oil collecting cavity (13) and is connected with the air inlet (321) of the partition (32), and the other end of the telescopic air inlet pipe (20) is located outside the shell (10).
7. The oil separator (100) according to claim 1 or 2, further comprising a fixed rod (35) fixed in the inner cavity along the axial direction of the housing (10), wherein the volume adjusting mechanism (30) is slidably sleeved outside the fixed rod (35) and moves along the fixed rod (35).
8. The oil separator (100) according to claim 7, wherein the volume adjusting mechanism (30) further comprises an elastic member (36), the elastic member (36) is sleeved outside the fixed rod (35), one end of the elastic member (36) is fixed relative to the fixed rod (35), and the other end of the elastic member (36) is abutted to the volume adjusting mechanism (30) and stretches along the fixed rod (35) under the action of the volume adjusting mechanism (30).
9. The oil separator (100) according to claim 1 or 2, further comprising a cooling oil separator (90), wherein the cooling oil separator (90) is disposed in the separation chamber (11) and is located in an outlet path of the gas discharged from the centrifugal oil separator (50).
10. The oil separator (100) according to claim 9, further comprising an air outlet plate (80), wherein the air outlet plate (80) is arranged in the separation chamber (11) and separates the separation chamber (11) into a main separation chamber (112) and a standby separation chamber (114), the centrifugal oil separator (50) is arranged in the main separation chamber (112), the cooling oil separator (90) is arranged in the standby separation chamber (114), and an air port (81) for communicating the main separation chamber (112) with the standby separation chamber (114) is formed in the air outlet plate (80).
11. The oil separator (100) according to claim 10, further comprising a second controller and an oil content sensor (63), wherein the housing (10) is provided with the air outlet (12) in communication with the backup separation chamber (114), the oil content sensor (63) is provided at the air outlet (12) and is used for detecting the actual oil content of the air at the air outlet (12), and the second controller controls the cooling oil separator (90) to start working when the actual oil content exceeds a standard oil content.
12. The oil separator (100) of claim 1, wherein the centrifugal oil separator (50) is connected to the volume adjustment mechanism (30), and wherein the centrifugal oil separator (50) and the volume adjustment mechanism (30) move synchronously within the internal cavity.
13. The oil separator (100) according to claim 1, further comprising an oil suction plate (70) provided on a wall of the inner chamber, the oil suction plate (70) being located on a centrifugal path of oil droplets generated by centrifugation of the centrifugal oil separation member (50), the oil collection chamber (13) being located in a gravitational direction in which the oil droplets in the oil suction plate (70) drop.
14. A refrigeration system (200) comprising a compressor (210), an evaporator (250), a condenser (230) and an oil separator (100) according to any of claims 1-13, wherein an exhaust port of the compressor (210) is connected to the condenser (230), an intake port of the compressor (210) is connected to the evaporator (250), the condenser (230) is connected to the evaporator, and the oil separator (100) is arranged between the compressor (210) and the condenser (230).
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| CN201810942529.3A CN108679889B (en) | 2018-08-17 | 2018-08-17 | Refrigerating system and oil separator |
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| CN201810942529.3A CN108679889B (en) | 2018-08-17 | 2018-08-17 | Refrigerating system and oil separator |
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| CN108679889B true CN108679889B (en) | 2023-11-28 |
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| CN112177897B (en) * | 2020-08-24 | 2022-04-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Horizontal liquid separator and compressor |
| CN112097426B (en) * | 2020-09-07 | 2024-04-19 | 珠海格力电器股份有限公司 | Gas-liquid separator, air conditioning system and control method thereof |
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