CN107763422A - A kind of lubricating system of oil stream switch and the refrigeration system with it - Google Patents
A kind of lubricating system of oil stream switch and the refrigeration system with it Download PDFInfo
- Publication number
- CN107763422A CN107763422A CN201610688055.5A CN201610688055A CN107763422A CN 107763422 A CN107763422 A CN 107763422A CN 201610688055 A CN201610688055 A CN 201610688055A CN 107763422 A CN107763422 A CN 107763422A
- Authority
- CN
- China
- Prior art keywords
- oil
- switch
- float
- oil stream
- float chamber
- 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.)
- Granted
Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 15
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 9
- 239000003921 oil Substances 0.000 claims abstract description 134
- 238000007667 floating Methods 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 239000010724 circulating oil Substances 0.000 claims abstract description 7
- 239000000446 fuel Substances 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000010687 lubricating oil Substances 0.000 description 15
- 239000012530 fluid Substances 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 244000144985 peep Species 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
- F16N7/40—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems in a closed circulation system
-
- 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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Level Indicators Using A Float (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The present invention relates to a kind of oil stream switch, oil stream switch includes the floating ball device being connected on circulating oil path and the floating liquid-level switch part being arranged in the floating ball device, wherein described floating ball device includes oil inlet and oil-out and the float chamber being arranged between the oil inlet and the oil-out, the floating liquid-level switch part is arranged in the float chamber, and the floating ball device is provided with the passage connected with the float chamber.The false alarm of oil level switch can be avoided according to the oil stream of present invention switch, while mitigate disturbance of the level fluctuation to ball float so as to reduce the friction between ball float and loop bar.Further, the lubricating system of the refrigeration system with above-mentioned oil stream switch is also disclosed.
Description
Technical field
The present invention relates to oil lubrication technical field.In particular it relates to a kind of oil stream switchs and with its refrigeration system
Lubricating system.
Background technology
In refrigeration systems, refrigeration oil has lubrication, sealing and a function such as noise reduction, therefore lubricant level gives warning in advance
It is one of key factor for ensureing system reliability.It is currently used to be used to judge that the method whether oil level is less than predetermined oil level is
Using float-ball type oil level switch or photo-electric oil level switch.Specifically, float type level switch is a kind of mechanical liquid level
Switch, is to float ball float using the buoyancy of ball float in a liquid, there is magnet built in one in ball float, once liquid level is inadequate, is floated
Ball will sink, and the state of the contact in reed pipe can change because of the change in magnetic field, and originally off-state will close,
Originally closure state will disconnect, so as to provide the signal that liquid level is less than fuel allowance liquid level.Photoelectric liquid level switch is a kind of
Electronic type liquid-level switch, it is come work, when having oil, what Light-Emitting Diode was sent using optical principle and electronic technology
Light can come bounce back in the prism, and the light that electronic induction part can receive bounce back illustrates that oil level is normal, and one
Denier oil level is less than prism, light will be scattered in oil groove can not bounce back come, it is whether abnormal so as to perceive oil level.Using
When, once the liquid level in oil groove or oil tank is less than the liquid level of reserved oil mass, liquid-level switch is issued by low oil level signal, and controller exists
Arrestment is run after receiving the signal of oil level switch, so as to which the oil starvation operation being likely to occur to equipment is protected.
In use, it is found that float type level switch and photoelectric liquid level switch all have one disadvantage in that, be exactly once
There is bubble in liquid, two kinds of switches all can not perceive whether liquid level meets the requirements exactly.And in refrigeration systems, refrigerant is past
Toward can be dissolved in by a certain percentage in oil solution, once temperature or pressure change, being dissolved in that the refrigerant of oil solution has can
It can start to evaporate, produce foam, this, which can cause the density of oil solution to decline, makes the ball float of float type level switch not float, and enters
And oil level switch will provide a wrong liquid level signal.Likewise, for photoelectric liquid level switch, because oil solution foams,
The light sent from photoelectric liquid-level switch can not successfully go back to optoelectronic switch in the prism, also result in false alarm.
The content of the invention
The present invention be in order to solve the above-mentioned problems in the prior art at least in part, propose a kind of oil stream switch and
Lubricating system with its refrigeration system.
According to an aspect of the present invention, a kind of oil stream switch is disclosed, wherein oil stream switch includes being connected to circulation
Floating ball device on oil circuit and the floating liquid-level switch part being arranged in the floating ball device, wherein the floating ball device include into
Hydraulic fluid port and oil-out and the float chamber being arranged between the oil inlet and the oil-out, the floating liquid-level switch part are set
Put in the float chamber, the floating ball device is provided with the passage connected with the float chamber.
According to the present invention, oil stream switch is arranged on the circulating oil path of compressor, when there is oil stream to be switched through oil stream, floated
Fluid is full of in ball room, ball float will overcome self gravitation to float in the presence of buoyancy, and now oil stream switch remains closed.Together
When, once oil-free is by the way that the oil in float chamber will be returned in oil pipe in the presence of self gravitation in oil circuit.Now, buoyancy
Gradually lose, final ball float falls back to lower position, and oil stream switches off.As long as it follows that there is oil stream in circulating oil path
Dynamic, fluid will be full of float chamber, therefore be not in the state that oil stream switches off, so as to effectively prevent various originals
The false alarm caused by.
Alternatively, the oil inlet bottom of the floating ball device is provided with oil stream hole, with using oil stream momentum or
Oil stream changes partial drop of pressure caused by flow direction to make oil be full of float chamber.
Alternatively, it is provided between the float chamber and the oil-out for the logical of ball float indoor gas emptying
Road.
Alternatively, the floating liquid-level switch part further comprises the float switch seat being fixedly installed in the float chamber
And the ball float that can be moved with float chamber's height of liquid level relative to the float switch seat.
Alternatively, the float switch seat threaded connection is fixed in the float chamber, and the switch base is also with described
Ball float string sets loop bar thereon.
Alternatively, the float chamber is additionally provided with the peep hole for observing liquid level and ball float working condition.
Alternatively, the dry-reed tube switch triggered by the ball float, the tongue tube are provided with the float switch seat
Data signal caused by switch is outwards transmitted via the signal wire on the float switch seat.
Alternatively, the float chamber is integrally formed as monomer part with the floating ball device.
According to this new other side, a kind of lubricating system of refrigeration system is disclosed, wherein the lubricating system
Opened using compressor, Fuel Tanking Unit, the oil stream switch, filter and oil circulating pump, the oil stream of circulation line connection
The downstream for being arranged on the Fuel Tanking Unit is closed, the oil inlet of the oil stream switch connects with the oil-out of the Fuel Tanking Unit, institute
State oil circulating pump to be used to the grease pump after filtering being back in compressor, it is characterised in that the oil stream switch is according to this hair
Bright oil stream switch.
Brief description of the drawings
From the description to exemplary embodiment of the present invention below in conjunction with the accompanying drawings, above and other aspect of the invention will
Become more apparent upon and be easier to understand, in the accompanying drawings：
Fig. 1 schematically shows the refrigeration system general arrangement according to the present invention；
Fig. 2 schematically shows the one embodiment for the oil stream switch for being connected to oil circuit；
Fig. 3 schematically shows another embodiment of oil stream switch；
Fig. 4 schematically shows another embodiment of oil stream switch；
Fig. 5 schematically shows oil stream switch tank connected with oil storage.
Description of reference numerals：
1st, compressor 2,8 check valves 3, oil storage tank 5, filter
4th, 9 angle valves 6, oil pump 7, floating ball device
10th, fuel feeding magnetic valve 7-1, oil inlet 7-2, oil-out
7-3, passage 7-4, float switch 7-5, visor 7-6, ball float
7-7, oil stream hole
Embodiment
The preferred embodiment of the present invention is illustrated referring to the drawings.It is it should be noted that used herein
Term " on ", " under ", "front", "rear", "left", "right" and similar statement for illustrative purposes only, not limit.
Shown in Fig. 1-2 according to the present invention refrigeration system, wherein the refrigeration system include be used for compression refrigerant with
The compressor 1 of kind of refrigeration cycle is carried out, after wherein the lubricating oil in compressor 1 separates in the oil eliminator of compressor 1, passes through pipe
Road and check valve 2 are oriented to oil storage tank 3, then are connected via pipeline with the oil inlet 7-1 of floating ball device 7.And then lubricating oil is from floating
The oil-out 7-2 of ball device 7 flows out to angle valve 4, then is directed into check valve 8 or oil pump 6 after being filtered via filter 5, from
And return to the lubricating oil after filtering in compressor 1 through fuel feeding magnetic valve 10, the circulation lube system of refrigeration system is formed with this
System.
In actual use, it is necessary to monitor the oil level in oil storage tank 3 to ensure to there is enough lubricating oil to feed compression
Machine 1.According to the present invention, the oil level monitoring in oil storage tank 3 is realized by the floating ball device 7 being connected on lubricant passage way.It is such as attached
Shown in Fig. 2, wherein the floating ball device 7 has the oil inlet 7-1 that is connected with the flowline of oil storage tank 3, and enter with angle valve 4
The oil-out 7-2 of oil pipe connection.Floating ball device 7 includes the float chamber being arranged on pipeline and for example, by threadingly
The float switch 7-4 being fixed in float chamber.Wherein float switch 7-4 is formed with loop bar, and ball float 7-6 strings are located on loop bar
To be fluctuated in float chamber relative to the fluid level condition in oil storage tank 3 relative to loop bar, it is preferable that set on float switch seat
Put with the dry-reed tube switch triggered by the ball float, data signal caused by dry-reed tube switch is via the float switch seat
On signal wire outwards transmit, while the effect between ball float 7-6 and loop bar due to lubricating oil can also reduce friction.Float chamber
On be provided with the visor 7-5 of working condition for observing liquid level and ball float.Preferably, between float chamber and oil-out 7-2
Small-bore passage 7-3 is provided with, due to pressure difference be present between entrance 7-1 and outlet 7-2, in the presence of passage 7-3, can be made
The top gas emptying of float chamber, makes float chamber hydraulically full as much as possible.It is provided with the bottom of the oil inlet pipe of floating ball device 7
Oil stream hole 7-7, after lubricating oil enters from oil inlet 7-1, partial drop of pressure caused by the momentum or elbow of oil stream can be utilized
Float chamber is set to be full of lubricating oil, while this structure can make oil level switch 7-4 shorter, so that stability is more preferable.
Referring to accompanying drawing 5, the floating ball device 7 being connected with oil storage tank 3 illustrated therein is.Wherein as illustrated, floating ball device 7
Setting height(from bottom) h can be adjusted as needed.The needs be mainly according to reserved in oil storage tank 3 lubricating oil number come it is true
It is fixed., may be different using the oil mass for then reserving lubricating oil in different systems for the compressor of different model.Therefore, may be used
To make the height and position that ball float closes reserve liquid with the lubricating oil in oil storage tank 3 by adjusting the setting height(from bottom) h of floating ball device 7
Face maintains an equal level.Wherein lubricating oil reserves liquid level when referring to occur low oil level alarm, it can also be ensured that compressor can normal boot-strap simultaneously
Minimum lubricants capacity lubricating oil being recovered in oil storage tank 3.
In operation, the lubricating oil discharged in compressor 1 flows in the presence of oil pump 6 in circulating oil path.When from
When the lubricating oil of oil storage tank 3 flows through floating ball device 7, lubricating oil is full of float chamber so that ball float 7-6 overcomes in the presence of buoyancy
Gravity floats, so as to keep oil stream switch to be constantly in closure state.Once oil-free will be by, oil in float chamber in oil pipe
Returned in the presence of self gravitation in oil pipe, now, ball float 7-6 buoyancy will gradually be lost, and final ball float 7-6 will be fallen back to
Lower position, now oil stream switch off.It follows that switched according to the oil stream of the present invention, as long as oil in lubricant passage way be present
Flowing, fluid will be full of float chamber, be not in the state that oil stream switches off, so as to effectively prevent therefore
False alarm caused by a variety of causes.
Another embodiment that the oil stream according to the present invention shown in Figure 3 switchs.Wherein float chamber fills with ball float
Put and be integrally formed as monomer part, float chamber is arranged on the side of the oil-piping of floating ball device, and float chamber passes through oil stream hole 7-7 and oil
The oil inlet 7-1 of pipeline is connected.Float switch is fixedly mounted in float chamber for example, by threaded connection, and in float chamber
Side is provided with the visor 7-5 for observing liquid level, is connected between float chamber and the oil-out 7-2 of oil-piping by passage 7-3,
So that the air in float chamber can empty.According to a preferred embodiment of the invention, the integration of part is realized, so as to
It is easy to floating ball device being assembled in circulating oil path.
Another embodiment that the oil stream according to the present invention shown in Figure 4 switchs.Wherein float chamber fills with ball float
Put and be integrally formed as monomer part, float chamber is arranged on the side of the oil-piping of floating ball device, and float chamber passes through oil stream hole 7-7 and oil
The oil inlet 7-1 of pipeline is connected.Float switch is fixedly mounted in float chamber for example, by threaded connection, and in float chamber
Side is provided with the visor 7-5 for observing liquid level.According to a preferred embodiment of the invention, the entirety of part is equally realized
Change, so as to be easy to that floating ball device is assembled in circulating oil path.
The present invention is illustrated by above-mentioned embodiment, but it is to be understood that, above-mentioned embodiment is
For the purpose illustrated and illustrated, and it is not intended to limit the invention in the range of described embodiment.In addition this area
Technical staff can also make it is understood that the invention is not limited in above-mentioned embodiment according to the teachings of the present invention
More kinds of variants and modifications, these variants and modifications are all fallen within scope of the present invention.
Claims (9)
1. a kind of oil stream switch, it is characterised in that oil stream switch includes floating ball device and the setting being connected on circulating oil path
Floating liquid-level switch part in the floating ball device, wherein the floating ball device includes oil inlet and oil-out and is arranged on
Float chamber between the oil inlet and the oil-out, the floating liquid-level switch part is arranged in the float chamber, described
Floating ball device is provided with the passage connected with the float chamber.
2. oil stream switch as claimed in claim 1, it is characterised in that set in the oil inlet bottom of the floating ball device
There is oil stream hole, to change partial drop of pressure caused by flow direction using the momentum of oil stream or oil stream to make oil be full of float chamber.
3. oil stream switch as claimed in claim 1, it is characterised in that be provided between the float chamber and the oil-out
For the passage of ball float indoor gas emptying.
4. oil stream switch as claimed in claim 1, it is characterised in that the floating liquid-level switch part further comprises that fixation is set
Put the float switch seat in the float chamber and can be moved with float chamber's height of liquid level relative to the float switch seat
Ball float.
5. oil stream switch as claimed in claim 4, it is characterised in that the float switch seat threaded connection is fixed on described floating
In ball room, the switch base also sets loop bar thereon with the ball float string.
6. oil stream switch as claimed in claim 1, it is characterised in that the float chamber is additionally provided with for observing liquid level and floating
The visor of ball working condition.
7. oil stream switch as claimed in claim 1, it is characterised in that be provided with the float switch seat by the ball float
The dry-reed tube switch of triggering, data signal caused by the dry-reed tube switch via the signal wire on the float switch seat to
Outer transmission.
8. oil stream switch as claimed in claim 1, it is characterised in that the float chamber is integrally formed as with the floating ball device
Monomer part.
9. a kind of lubricating system of refrigeration system, wherein the lubricating system connected using circulation line compressor, storage
Oily device, oil stream switch, filter and oil circulating pump, the oil stream switch is arranged on the downstream of the Fuel Tanking Unit, described
The oil inlet of oil stream switch connects with the oil-out of the Fuel Tanking Unit, and the oil circulating pump is used for the grease pump after filtering
It is back in compressor, it is characterised in that the oil stream switch is the oil stream switch as any one of claim 1-8.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688055.5A CN107763422B (en) | 2016-08-17 | 2016-08-17 | Oil flow switch and lubricating system of refrigerating system with same |
| TW106126897A TWI787194B (en) | 2016-08-17 | 2017-08-09 | Oil flow switch and lubrication system with the same for a refrigeration system |
| KR1020197007581A KR102380931B1 (en) | 2016-08-17 | 2017-08-16 | Oil flow switch and lubrication system with it for refrigeration system |
| US16/325,685 US11293590B2 (en) | 2016-08-17 | 2017-08-16 | Oil flow switch and lubrication system with the same for a refrigeration system |
| JP2019510283A JP2019526773A (en) | 2016-08-17 | 2017-08-16 | Same lubrication system as oil flow switch and refrigeration system |
| EP17761375.9A EP3500806A1 (en) | 2016-08-17 | 2017-08-16 | Oil flow switch and lubrication system with the same for a refrigeration system |
| PCT/US2017/047219 WO2018035265A1 (en) | 2016-08-17 | 2017-08-16 | Oil flow switch and lubrication system with the same for a refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688055.5A CN107763422B (en) | 2016-08-17 | 2016-08-17 | Oil flow switch and lubricating system of refrigerating system with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107763422A true CN107763422A (en) | 2018-03-06 |
| CN107763422B CN107763422B (en) | 2023-06-06 |
Family
ID=61262866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610688055.5A Active CN107763422B (en) | 2016-08-17 | 2016-08-17 | Oil flow switch and lubricating system of refrigerating system with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107763422B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286842A (en) * | 2018-04-03 | 2018-07-17 | 珠海格力电器股份有限公司 | Ejector, ejector backflow device and method and heat pump system |
| CN109267197A (en) * | 2018-10-26 | 2019-01-25 | 浙江恒远化纤集团有限公司 | A kind of elasticizer |
| CN111365898A (en) * | 2020-04-03 | 2020-07-03 | 常州微能节能科技有限公司 | Method for promoting oil return of refrigerating machine oil of Freon circulation system |
| CN111879665A (en) * | 2020-06-19 | 2020-11-03 | 西安交通大学 | Device and method for measuring diffusion property of refrigerant/lubricating oil system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4533802A (en) * | 1984-06-12 | 1985-08-06 | Alcan Aluminun Corporation | Liquid flow switch and method of using same |
| US5901559A (en) * | 1998-09-09 | 1999-05-11 | Ac&R Components, Inc. | Electromechanical regulator |
| US6125642A (en) * | 1999-07-13 | 2000-10-03 | Sporlan Valve Company | Oil level control system |
| CN101949487A (en) * | 2010-08-05 | 2011-01-19 | 恒天重工股份有限公司 | Lubricate flow detector |
| CN205065002U (en) * | 2015-09-21 | 2016-03-02 | 天津市法斯克制冷设备有限公司 | Oil flow switch |
-
2016
- 2016-08-17 CN CN201610688055.5A patent/CN107763422B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4533802A (en) * | 1984-06-12 | 1985-08-06 | Alcan Aluminun Corporation | Liquid flow switch and method of using same |
| US5901559A (en) * | 1998-09-09 | 1999-05-11 | Ac&R Components, Inc. | Electromechanical regulator |
| US6125642A (en) * | 1999-07-13 | 2000-10-03 | Sporlan Valve Company | Oil level control system |
| CN101949487A (en) * | 2010-08-05 | 2011-01-19 | 恒天重工股份有限公司 | Lubricate flow detector |
| CN205065002U (en) * | 2015-09-21 | 2016-03-02 | 天津市法斯克制冷设备有限公司 | Oil flow switch |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286842A (en) * | 2018-04-03 | 2018-07-17 | 珠海格力电器股份有限公司 | Ejector, ejector backflow device and method and heat pump system |
| CN108286842B (en) * | 2018-04-03 | 2023-08-18 | 珠海格力电器股份有限公司 | Ejector, ejector reflux device and method and heat pump system |
| CN109267197A (en) * | 2018-10-26 | 2019-01-25 | 浙江恒远化纤集团有限公司 | A kind of elasticizer |
| CN109267197B (en) * | 2018-10-26 | 2024-02-27 | 浙江恒远化纤集团有限公司 | Elasticizer |
| CN111365898A (en) * | 2020-04-03 | 2020-07-03 | 常州微能节能科技有限公司 | Method for promoting oil return of refrigerating machine oil of Freon circulation system |
| CN111879665A (en) * | 2020-06-19 | 2020-11-03 | 西安交通大学 | Device and method for measuring diffusion property of refrigerant/lubricating oil system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107763422B (en) | 2023-06-06 |
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Effective date of registration: 20180814 Address after: Longtian Town, Fogang County, Qingyuan, Guangdong Applicant after: YORK GUANGZHOU AIR CONDITIONING AND REFRIGERATION Co.,Ltd. Applicant after: YORK (WUXI) AIR CONDITIONING AND REFRIGERATION Co.,Ltd. Applicant after: JOHNSON CONTROLS TECHNOLOGY Co. Address before: 214000 D District, Wuxi new area, Jiangsu Province, block 22 Applicant before: JOHNSON CONTROLS AIR CONDITIONING AND REFRIGERATION (WUXI) Co.,Ltd. Applicant before: YORK (WUXI) AIR CONDITIONING AND REFRIGERATION Co.,Ltd. Applicant before: JOHNSON CONTROLS TECHNOLOGY Co. |
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