EP2413067A1 - Ölabscheider - Google Patents

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Publication number
EP2413067A1
EP2413067A1 EP10761443A EP10761443A EP2413067A1 EP 2413067 A1 EP2413067 A1 EP 2413067A1 EP 10761443 A EP10761443 A EP 10761443A EP 10761443 A EP10761443 A EP 10761443A EP 2413067 A1 EP2413067 A1 EP 2413067A1
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EP
European Patent Office
Prior art keywords
refrigerant
pipe
tubular outer
oil
oil separator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10761443A
Other languages
English (en)
French (fr)
Other versions
EP2413067A4 (de
Inventor
Akira Sakano
Kenichiro Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanden Corp
Original Assignee
Sanden Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanden Corp filed Critical Sanden Corp
Publication of EP2413067A1 publication Critical patent/EP2413067A1/de
Publication of EP2413067A4 publication Critical patent/EP2413067A4/de
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B04C5/103—Bodies or members, e.g. bulkheads, guides, in the vortex chamber
    • 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
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/02—Centrifugal separation of gas, liquid or oil

Definitions

  • the present invention relates to an oil separator which separates refrigeration machine oil mixed in refrigerant discharged from a compressor, and specifically, to an oil separator suitable to be disposed in a refrigeration circuit of an air conditioning system for a vehicle.
  • an oil separator having a function for separating refrigeration machine oil mixed in refrigerant discharged from a compressor and returning the separated refrigeration machine oil to the compressor.
  • a conventional oil separator because the outer shape and the length dimension are large, the mounting position to an automobile has been limited, and further, because the structure is relatively complicated and the cost is high, it has not been so common to separate oil in refrigerant discharged from a compressor by an oil separator disposed outside the compressor and to return the separated refrigeration machine oil to the compressor. Therefore, an oil separating mechanism incorporated integrally into a compressor itself has been common, but in such a case, the function for oil separation has been limited.
  • refrigerant HFO1234yf etc. planned to be used from the viewpoint of preventing global warmth
  • its temperature for separation into two layers of refrigerant and refrigeration machine oil in a high temperature region is relatively low as compared with a conventional refrigerant HFC134a
  • oil return to a compressor in a refrigeration circuit may deteriorate
  • performance of refrigeration system may be considered to deteriorate from its refrigerant property, it is considered to be necessary to decrease the amount of oil to be circulated in the refrigeration circuit itself, improve the efficiency of the air conditioning system and realize a performance level nearly equal to that of HFC134a.
  • Patent document 1 a compressor built-in type oil separator aiming its compact structure has been considered.
  • a structure is employed wherein the outer tube is divided into a whirl flow separation part relatively small in cross section of flow path and a whirl flow inversion chamber relatively large in cross section of flow path, as the refrigerant and the oil are flowing from the whirl flow separation part varying the cross-sectional area of flow path to the whirl flow inversion chamber, its flow speed is reduced, and it is aimed that the oil dropped down to the bottom of the outer tube can be stably accumulated.
  • Patent document 1 JP-A-2005-180808
  • Patent document 1 there is a description of a structural example which employs an improvement for enlarging the pipe diameter of the entrance of the outlet pipe provided as a return pipe in order to reduce the pressure loss in return flow to the outlet pipe of the separator, this causes the oil to be liable to enter into the outlet pipe further easily, and the amount of oil flowing out from the outlet pipe toward outside (for example, toward a condenser in the refrigeration circuit) may increase.
  • an object of the present invention is to provide an oil separator which can separate refrigerant and refrigeration machine oil with extremely high efficiency, which can effectively prevent the outflow of separated oil towards the refrigerant discharge path side, and which can reduce pressure loss in the flow of refrigerant.
  • another object of the present invention is to provide an oil separator which can realize a compact structure without making it large-sized especially in the radial direction while achieving an excellent separation performance, which can spatially improve mounting property in case of being mounted as a sole body, and which can be easily designed to be integrated with another device.
  • an oil separator according to the present invention comprises:
  • the refrigeration machine oil having a greater mass is separated from the refrigerant by centrifugal separation in the helical flow of the refrigerant containing refrigeration machine oil in the tubular outer pipe, in the downflow direction of this helical flow two refrigerant inversion parts of the first refrigerant inversion part and the second refrigerant inversion part are provided, and by inverting the flow direction of refrigerant in relation to vertical direction at each refrigerant inversion part, the refrigerant is separated from the refrigerant containing refrigeration machine oil (as viewed from the oil side, the refrigeration machine oil is separated from the refrigerant containing refrigeration machine oil).
  • the refrigerant separated at the first refrigerant inversion part enters into the refrigerant outlet pipe from the first refrigerant inflow port, and is flowed out from the external outflow port to outside of the oil separator through the refrigerant outlet pipe, and the refrigerant separated at the second refrigerant inversion part enters into the refrigerant return pipe from the second refrigerant inflow port, and is flowed out from the external outflow port to outside of the oil separator through the refrigerant return pipe, the refrigerant communication port and successively the refrigerant outlet pipe.
  • the separation of refrigeration machine oil and refrigerant is carried out at two steps in the axial direction of the tubular outer pipe, and as compared with a conventional single-step separation, the efficiency of separation can be improved.
  • the part exhibiting a reflector function is provided between the refrigerant return pipe and the inner surface of the tubular outer pipe, namely, between the first refrigerant inversion part and the second refrigerant inversion part, and it can be prevented by the reflector effect due to the part exhibiting a reflector function that the refrigeration machine oil stored in the oil storage part at the bottom of the tubular outer pipe flows out into the refrigerant outlet pipe through the first refrigerant inflow port by splashing up, etc.
  • this part exhibiting a reflector function also exhibits a function for temporarily contracting the cross-sectional area of flow path with respect to the downflow of the helical flow of the refrigerant containing refrigeration machine oil
  • this part exhibiting a reflector function also exhibits a function for temporarily contracting the cross-sectional area of flow path with respect to the downflow of the helical flow of the refrigerant containing refrigeration machine oil
  • the efficiency for separation as the whole of the oil separator can be greatly improved. Further, because the separation due to the above-described two-step refrigerant inversion and the inflow operation of the separated refrigerant from both refrigerant inversion parts into the discharge path are performed, as compared with a conventional single-step case, reduction of resistance at the refrigerant inversion parts can be expected, and whereby reduction of resistance of flow path and pressure loss as the whole of the oil separator becomes possible.
  • the diameter of the tubular outer pipe may be a constant diameter, and because in this tubular outer pipe two refrigerant inversion parts of the first refrigerant inversion part and the second refrigerant inversion part and the part exhibiting a reflector function therebetween can be formed, there is no portion enlarged in outer diameter of oil separator and it is not necessary to make it partially large-sized in the radial direction as in the aforementioned Patent document 1, and therefore, a compact structure can be realized particularly in the radial direction. Therefore, spatially, the mounting property in case of being mounted as a sole body, in particular, the space efficiency, can be improved. Further, a tubular outer pipe having a constant diameter may be employed, it also becomes possible to facilitate integration with another device, for example, a condenser disposed at a downstream position of a compressor in a refrigeration circuit.
  • the refrigerant return pipe comprises a tubular pipe having a constant diameter which extends upwardly from the second refrigerant inversion part
  • the part exhibiting a reflector function comprises a bevel part which extends from an upper end of this tubular pipe toward an obliquely downward direction and which is enlarged in diameter as located at a lower position.
  • the refrigerant return pipe comprises a bell mouth type pipe which extends upwardly from the second refrigerant inversion part and which is enlarged in diameter as located at an upper position, and the part exhibiting a reflector function is formed from the bell mouth type pipe.
  • the refrigerant return pipe comprises a tubular pipe part having a constant diameter which extends upwardly from the second refrigerant inversion part and a bell mouth type pipe part which extends upwardly from an upper end of the tubular pipe part and which is enlarged in diameter as located at an upper position, and the part exhibiting a reflector function is formed from the bell mouth type pipe part.
  • the refrigerant outlet pipe and the refrigerant return pipe are formed as an integrated tubular pipe having a connection part therebetween, an opening as the first refrigerant inflow port is formed on a pipe wall of the refrigerant outlet pipe positioned above the connection part, and the part exhibiting a reflector function comprises a bevel part which extends from the connection part or the vicinity thereof toward an obliquely downward direction and which is enlarged in diameter as located at a lower position.
  • the refrigerant return pipe comprises a first bell mouth type pipe part which extends upwardly from the second refrigerant inversion part and which is enlarged in diameter as located at an upper position, and a second bell mouth type pipe part which is connected to an upper end of the first bell mouth type pipe part and which is contracted in diameter as located at an upper position, a lower end of the refrigerant outlet pipe is connected to an upper end of the refrigerant return pipe at a connection part to form an integrated pipe structure, an opening as the first refrigerant inflow port is formed on a pipe wall of the refrigerant outlet pipe positioned above the connection part, and the part exhibiting a reflector function is formed from the first bell mouth type pipe part.
  • the refrigerant return pipe comprises a tubular pipe part having a constant diameter which extends upwardly from the second refrigerant inversion part, a first bell mouth type pipe part which extends upwardly from an upper end of the tubular pipe part and which is enlarged in diameter as located at an upper position, and a second bell mouth type pipe part which is connected to an upper end of the first bell mouth type pipe part and which is contracted in diameter as located at an upper position, a lower end of the refrigerant outlet pipe is connected to an upper end of the refrigerant return pipe at a connection part to form an integrated pipe structure, an opening as the first refrigerant inflow port is formed on a pipe wall of the refrigerant outlet pipe positioned above the connection part, and the part exhibiting a reflector function is formed from the first bell mouth type pipe part.
  • the above-described refrigerant outlet pipe or refrigerant return pipe may be fixed relative to the tubular outer pipe at a predetermined figure and at a predetermined position by a certain manner.
  • a structure may be employed wherein at least the refrigerant return pipe is supported relative to the inner surface of the tubular outer pipe via a bracket at a condition where a path for refrigerant containing refrigeration machine oil is ensured.
  • the refrigeration machine oil separated by the oil separator and temporarily stored in the oil storage part according to the present invention is returned to a portion needing lubrication in the system, in particular, returned to a compressor, for example, a crank chamber in the compressor.
  • a compressor for example, a crank chamber in the compressor.
  • an oil return tube for returning refrigeration machine oil stored in the oil storage part to a compressor is connected to the oil separator.
  • the position for disposing the oil separator according to the present invention is not particularly restricted as long as it is an exit side of a compressor, and for example, an embodiment can be employed wherein the oil separator is disposed between a compressor and a condenser in a refrigeration circuit having the compressor, the condenser, an expansion mechanism and an evaporator in this order.
  • a structure may be employed wherein the oil separator is built in a header pipe of the condenser, and the external outflow port of the refrigerant outlet pipe is opened toward inside of the header pipe.
  • the oil separator according to the present invention in particular, its tubular outer pipe, can also be formed integrally with another device or a part of another device.
  • a structure may be employed wherein the header pipe and the tubular outer pipe are formed integrally by extrusion molding.
  • oil separator is excellent in mounting property and space efficiency for disposition as well as in performance
  • it is particularly suitable to be provided in a refrigeration circuit of an air conditioning system for a vehicle. For example, even in case being mounted in an engine room, it can be mounted efficiently without causing a waste dead space.
  • the oil separator of the present invention in the oil separator separating refrigeration machine oil and refrigerant basically by centrifugal separation, since the refrigerant inversion parts for inverting the flow direction of separated refrigerant in relation to the vertical direction are provided at two steps, the separated refrigerant can be discharged from both refrigerant inversion parts through the refrigerant outlet pipe and it can be effectively prevented by the part exhibiting a reflector function that the oil temporarily stored in the oil storage part at the bottom portion is returned into the separated refrigerant by splashing up and the like, an excellent separation performance capable of separating refrigeration machine oil and refrigerant with an extremely high efficiency can be exhibited.
  • the oil separator because it is not necessary to provide a part enlarged in pipe diameter to the tubular outer pipe, a compact structure can be realized particularly by avoiding a large-sized configuration in the radial direction, and in case where the oil separator is mounted as a sole body, it can be mounted without causing a waste dead space, for example, along a part of another device, and therefore, it can be mounted at a good space efficiency.
  • Such an excellent space efficiency of the oil separator according to the present invention in case of applying it to an air conditioning system for a vehicle, may contribute to increase of design freedom of the vehicle, and further, to reduction of amount of material for a vehicle body, lightening in weight thereof, etc.
  • Fig. 1 shows schematic structure and operation of an oil separator according to an embodiment of the present invention.
  • symbol 1 indicates an oil separator
  • the oil separator 1 separates discharged refrigerant from a compressor 2 (high-temperature and high-pressure gas refrigerant), which contains refrigeration machine oil, into refrigeration machine oil and refrigerant, and returns the separated refrigerant to, for example, a condenser disposed at a downstream side in a refrigeration circuit, and returns the separated refrigeration machine oil into, for example, a crank case of compressor 2 through an oil return tube 3.
  • a compressor 2 high-temperature and high-pressure gas refrigerant
  • Oil separator 1 has a tubular outer pipe 4 which is disposed on a outlet side of compressor 2 so as to extend in a vertical direction substantially at a constant diameter and at a configuration of a straight pipe, and an inlet pipe 6 provided at an upper part of the tubular outer pipe 4 for introducing refrigerant containing refrigeration machine oil, discharged from compressor 2, into the tubular outer pipe 4 in such a manner as to produce a downward helical flow 5 of the refrigerant containing refrigeration machine oil along an inner surface of the tubular outer pipe 4.
  • the refrigerant introduction angle of this inlet pipe 6 relative to tubular outer pipe 4 is set at an angle that does not decrease the speed of the refrigerant, which has been introduced into tubular outer pipe 4, in the circumferential direction of the tubular outer pipe so much, for example, set at an angle close to the tangential direction of the inner circumferential surface of tubular outer pipe 4.
  • the refrigerant containing refrigeration machine oil introduced into tubular outer pipe 4 flows down along the inner surface of tubular outer pipe 4 while depicting helical flow 5, and at that time, a part of refrigeration machine oil greater in mass is centrifugally separated from refrigerant, and the separated refrigeration machine oil flows downward moving on and along the inner surface of tubular outer pipe 4 by its self-weight.
  • This oil separator 1 further has a refrigerant outlet pipe 11 which has an external outflow port 7 at an upper end side for flowing out the separated refrigerant to outside of tubular outer pipe 4, has a section extending in the axial direction of tubular outer pipe 4 at a central position of tubular outer pipe 4, and has a first refrigerant inflow port 10 at a lower end side of the section for flowing in refrigerant therein, which has been separated from refrigerant containing refrigeration machine oil having flowed down in the helical flow 5 and the flow direction of which has been inverted in relation to vertical direction at a first refrigerant inversion part 8, and has a refrigerant return pipe 16 which extends in an axial direction of tubular outer pipe 4 at a central position of tubular outer pipe 4, below this refrigerant outlet pipe 11, has a refrigerant communication port 12 at an upper end side for being confronted with or connected to a lower end of refrigerant outlet pipe 11 (in this depicted example, being confronted at
  • the above-described external outflow port 7 of refrigerant outlet pipe 11 is formed at an end of the upper portion of refrigerant outlet pipe 11 which is formed in a curved pipe. Further, oil separator 1 has an oil storage part 17, which is formed at a bottom portion of tubular outer pipe 4, capable of temporarily storing refrigeration machine oil separated from refrigerant.
  • part exhibiting a reflector function 18 for preventing refrigeration machine oil stored in oil storage part 17 from flowing out into refrigerant outlet pipe 11 is provided between refrigerant return pipe 16 and the inner surface of tubular outer pipe 4.
  • part exhibiting a reflector function 18 is formed at an upper portion side of refrigerant return pipe 16 and formed as a bell mouth type pipe which is enlarged in diameter as located at an upper position.
  • symbol 20 indicates a support bracket for fixing refrigerant outlet pipe 11 at a predetermined position relative to the inner surface of tubular outer pipe 4
  • symbol 21 indicates a support bracket for fixing refrigerant return pipe 16 at a predetermined position relative to the inner surface of tubular outer pipe 4.
  • oil separator 1 In oil separator 1 according to this embodiment constituted as described above, since two refrigerant inversion parts of first refrigerant inversion part 8 and second refrigerant inversion part 13 are provided in the downflow direction of helical flow 5 of refrigerant containing refrigeration machine oil and refrigerant separated and inverted in order at the two-step refrigerant inversion is introduced in the external discharge direction through refrigerant outlet pipe 11, the efficiency of separation can be greatly improved as compared with a conventional single-step separation.
  • first refrigerant inversion part 8 and second refrigerant inversion part 13 it can be prevented by the reflector effect due to the part exhibiting a reflector function 13 that the refrigeration machine oil temporarily stored in oil storage part 17 flows out into refrigerant outlet pipe 11 through first refrigerant inflow port 10 by splashing up, etc. of refrigerant in the upward direction due to the disturbance, etc. of refrigerant at second refrigerant inversion part 13.
  • the return flow of the oil returned again to oil storage part 17 by this reflector effect is indicated by symbol 19 in Fig. 1 .
  • this part exhibiting a reflector function 18 also functions for temporarily contracting the cross-sectional area of flow path with respect to the downflow of helical flow 5 of the refrigerant containing refrigeration machine oil as shown in the figure, it can be achieved to improve the inversion and separation performance of refrigerant at first refrigerant inversion part 8 positioned at an upstream side of part exhibiting a reflector function 18, and because the flow speed is temporarily increased by the temporary contraction of the cross-sectional area of flow path, the centrifugal separation performance due to the helical flow at a downstream side of part exhibiting a reflector function 18 is improved, and further, the flow speed is rapidly changed by the enlargement in cross-sectional area of flow path after the temporary contraction of the cross-sectional area of flow path, and therefore, it may be also expected to improve the inversion and separation performance of refrigerant at second refrigerant inversion part 13. Therefore, the efficiency for separation as the whole of oil separator 1 can be greatly improved, as compared with a conventional structure at a
  • tubular outer pipe 4 is formed as a straight pipe shape with a substantially constant diameter and first refrigerant inversion part 8, second refrigerant inversion part 13 and part exhibiting a reflector function 18 are formed in the straight pipe-shape tubular outer pipe 4, it is not necessary to provide a diameter-enlarged pipe portion to tubular outer pipe 4 defining the outline of the oil separator, in particular, a structure compact in the radial direction and good in space efficiency can be realized, and the mounting property into a place limited in space (for example, into an engine room of a vehicle) can be improved.
  • various structures can be employed for the refrigerant return pipe, the part exhibiting a reflector function, and the connection structure between the refrigerant outlet pipe and the refrigerant return pipe. Hereinafter, some structural examples thereof will be shown.
  • the refrigerant return pipe 35 is formed as constant-diameter tubular pipe extending upwardly from second refrigerant inversion part 36, and a part exhibiting a reflector function 37 is formed as a bevel part which extends from an upper end of this tubular pipe toward an obliquely downward direction and which is enlarged in diameter as located at a lower position.
  • a part exhibiting a reflector function 37 formed as a bevel part the inflow of the oil splashed up from a lower position to a portion around refrigerant return pipe 35 can be prevented efficiently.
  • substantially the entire length of the refrigerant return pipe 45 comprises a bell mouth type pipe which extends upwardly from a second refrigerant inversion part 46 and which is enlarged in diameter as located at an upper position, and the part exhibiting a reflector function is formed from the bell mouth type pipe.
  • the refrigerant return pipe 45 and the part exhibiting a reflector function are formed as an identical pipe. In the structure of such a part exhibiting a reflector function, the reflector effect can be exhibited over a relatively long zone in the vertical direction.
  • refrigerant outlet pipe 53 and refrigerant return pipe 54 are provided relatively to tubular outer pipe 52 similarly in the aforementioned embodiment, refrigerant outlet pipe 53 and refrigerant return pipe 54 are formed as an integrated tubular pipe having a connection part 55 therebetween, and an opening 56 as the first refrigerant inflow port is formed on a pipe wall of refrigerant outlet pipe 53 positioned above this connection part 55. Then, a part exhibiting a reflector function 57 is formed as a structure comprising a bevel part which extends from the connection part 55 or the vicinity thereof toward an obliquely downward direction and which is enlarged in diameter as located at a lower position.
  • Symbol 58 indicates a support bracket for fixing the above-described integrated tubular pipe at a predetermined position relatively to the inner surface of tubular outer pipe 52. Because refrigerant outlet pipe 53 and refrigerant return pipe 54 are formed as an integrated tubular pipe, supporting by support bracket 58 becomes easy, and the number of support bracket s 58 may be small.
  • refrigerant return pipe 64 comprises a first bell mouth type pipe part 66 which extends upwardly from second refrigerant inversion part 65 and which is enlarged in diameter as located at an upper position, and a second bell mouth type pipe part 67 which is connected to an upper end of the first bell mouth type pipe part 66 and which is contracted in diameter as located at an upper position, and a lower end of refrigerant outlet pipe 63 is connected to an upper end of refrigerant return pipe 64 at a connection part 68 to form an integrated pipe structure.
  • An opening 69 as the first refrigerant inflow port is formed on a pipe wall of refrigerant outlet pipe 63 positioned above this connection part 68. Then, the part exhibiting a reflector function is formed from the above-described first bell mouth type pipe part 66.
  • Refrigerant outlet pipe 63 and refrigerant return pipe 64 formed as an integrated tubular pipe are fixed at predetermined positions relatively to the inner surface of tubular outer pipe 62 by support brackets 70.
  • the part exhibiting a reflector function can be formed by first bell mouth type pipe part 66 over a relatively long zone, and by second bell mouth type pipe part 67, it becomes possible to perform the refrigerant inversion at the first refrigerant inversion part more smoothly and to promote the flow path contraction effect relative to the downward helical flow, and therefore, a more smooth as a whole can be expected.
  • Fig. 6 depicts an oil separator 71 according to a modification of the structure shown in Fig. 5 , as compared with the structure shown in Fig. 5 , refrigerant return pipe 72 comprises a tubular pipe part 74 having a constant diameter which extends upwardly from second refrigerant inversion part 73, a first bell mouth type pipe part 75 which extends upwardly from an upper end of the tubular pipe part 74 and which is enlarged in diameter as located at an upper position, and a second bell mouth type pipe part 76 which is connected to an upper end of the first bell mouth type pipe part 75 and which is contracted in diameter as located at an upper position.
  • Tubular outer pipe 77, an inlet pipe (omitted in the figure), refrigerant outlet pipe 78, opening 79 and support brackets 80 are substantially the same in structure as those shown in Fig. 5 .
  • the position for disposing the oil separator according to the present invention is not particularly restricted as long as it is an exit side of a compressor, and for example, as shown in Fig. 7 , an oil separator 86 can be disposed between a compressor 81 and a condenser 82 in a refrigeration circuit 85 having the compressor 81, the condenser 82, an expansion mechanism 83 and an evaporator 84 in this order.
  • a structure can be employed wherein oil separator 86 is built in a header pipe of condenser 82, and the external outflow port of the refrigerant outlet pipe is opened toward the inside of the header pipe.
  • oil separator 91 into a header pipe 93 of a condenser 92 and to form the header pipe 93 and a tubular outer pipe 94 of the oil separator 91 integrally, in particular, to integrally form by extrusion molding.
  • symbol 95 indicates heat exchange tubes of condenser 92 connected to header pipe 93
  • symbol 96 indicates a lid portion of header pipe 93
  • symbol 97 indicates an inlet pipe of oil separator 91
  • symbol 98 indicates a refrigerant outlet pipe of oil separator 91, respectively
  • a part of the integrally formed tubular outer pipe 94 forms a partition wall 99 between oil separator 91 and the tube-side inside of header pipe 93.
  • the oil separator according to the present invention can be applied to any use for separating refrigeration machine oil from refrigerant discharged from a compressor, and in particular, it is suitable to be disposed in a refrigeration circuit, especially, between a compressor and a condenser in a refrigeration circuit of an air conditioning system for a vehicle.

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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)
  • Cyclones (AREA)
EP10761443.0A 2009-04-08 2010-04-08 Ölabscheider Withdrawn EP2413067A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009093930A JP2010243108A (ja) 2009-04-08 2009-04-08 油分離器
PCT/JP2010/002560 WO2010116739A1 (ja) 2009-04-08 2010-04-08 油分離器

Publications (2)

Publication Number Publication Date
EP2413067A1 true EP2413067A1 (de) 2012-02-01
EP2413067A4 EP2413067A4 (de) 2013-04-17

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EP10761443.0A Withdrawn EP2413067A4 (de) 2009-04-08 2010-04-08 Ölabscheider

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US (1) US20120037554A1 (de)
EP (1) EP2413067A4 (de)
JP (1) JP2010243108A (de)
WO (1) WO2010116739A1 (de)

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EP2392881B1 (de) * 2010-06-04 2013-01-02 Thermofin GmbH Wärmeübertrager für phasenwechselndes Kältemittel mit horizontalem Verteiler- und Sammlerrohr
CN103438626B (zh) * 2013-08-21 2015-12-16 广东五星太阳能股份有限公司 一种高温热泵储液器及采用该储液器的高温热泵热水机
KR101634729B1 (ko) * 2015-12-21 2016-06-29 한삼코라(주) 회전여과입수관을 구비한 스테인리스 물탱크
EP3803233B1 (de) 2018-06-02 2024-03-06 Carrier Corporation Wassergekühlter wärmetauscher
EP3795257A1 (de) * 2019-09-19 2021-03-24 X'Pole Precision Tools Inc. Multizyklonstaubfiltervorrichtung

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EP2413067A4 (de) 2013-04-17
US20120037554A1 (en) 2012-02-16
WO2010116739A1 (ja) 2010-10-14

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