CN1097711C - Oil-balancing self-control device for multiple refrigeration compressors - Google Patents
Oil-balancing self-control device for multiple refrigeration compressors Download PDFInfo
- Publication number
- CN1097711C CN1097711C CN 99109589 CN99109589A CN1097711C CN 1097711 C CN1097711 C CN 1097711C CN 99109589 CN99109589 CN 99109589 CN 99109589 A CN99109589 A CN 99109589A CN 1097711 C CN1097711 C CN 1097711C
- Authority
- CN
- China
- Prior art keywords
- oil
- equalizing pipe
- compressor
- outlet
- flow controller
- 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.)
- Expired - Fee Related
Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 35
- 239000003921 oil Substances 0.000 claims description 133
- 230000008676 import Effects 0.000 claims description 8
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 2
- 239000012774 insulation material Substances 0.000 claims description 2
- 235000003642 hunger Nutrition 0.000 description 6
- 230000037351 starvation Effects 0.000 description 6
- 235000015927 pasta Nutrition 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000010725 compressor oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 101100188554 Arabidopsis thaliana OCT5 gene Proteins 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000032258 transport Effects 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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
-
- 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
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The automatic oil balancing controller for several refrigerating compressors consists of several compressors, oil separator, non-return valve, flow restrictor and oil storage bag. The structure is characterized in that: the shell of each compressor is provided with an oil outlet and is connected with an oil storage pocket. The outlets of the oil storage bags are connected with the first oil equalizing pipe and the second oil equalizing pipe in a staggered manner. The exhaust port of each compressor is connected with an oil separator and a one-way valve. The outlet of each oil separator is connected with a throttler, then enters the air suction port of the compressor and is connected with each oil equalizing pipe in a staggered manner. Compared with the prior art, the invention has the advantages of low cost, simple structure and reliable performance. The oil-balancing device is suitable for oil balancing among a plurality of refrigeration compressors.
Description
(1) technical field
The present invention relates to the equal oily self-con-tained unit of the oil balancing device of refrigeration compressor, particularly many refrigeration compressors.
(2) background technology
In refrigeration system, during compressor operating, must there be a small part refrigeration oil to return continuously and from cylinder, be forced out with cold-producing medium, enter in the pipeline and condenser and evaporimeter of refrigeration system.When refrigeration oil can not return compressor continuously, be bound to cause the compressor pasta to descend, so that the refrigeration oil exhaustion, the compressor oil starvation occurs and burn phenomenon.So guarantee that it is one of most important problem in the refrigerant system design that refrigeration oil returns compressor continuously.In having only the freon refrigeration system of a compressor, as long as adopt measures necessary, as adopt rational circuit design, after each position of system forms stable oil mass distribution, refrigeration oil can waltz through compressor suction duct and return crankcase, makes compressor keep the operate as normal pasta.And in the wide freon refrigeration system of load variations, use the separate unit compressor only to adopt start and stop control and energy adjustment measure often can not adapt to the needs of the acute variation of loading.So multiple compressors use in parallel in same refrigeration system, not only can be widened the range of capacity of refrigeration system, reduce starting current, prolong the service life of compressor, can also simplify system significantly, reduce cost of investment.But, in same refrigeration system, use the multiple compressors parallel connection, exist the problem that can refrigeration oil return each compressor smoothly.For this reason, the Mitsuo Ogawa etc. of Japan is at Panasonic's technical report of nineteen ninety-five, and Vol.41 has delivered " big capacity air conditioning method in parallel " among the No.5oct.P507.It is to be connected with bigger oil equalizing pipe of caliber and the less oil equalizing pipe of caliber between two compressor housings, on the blast pipe of every compressor, set up simultaneously an oil eliminator, most of refrigeration oil is after oil eliminator separates, return compressor suction duct by the decompression capillary flow, enter the oil mass of system pipeline and evaporimeter with minimizing, and make all oil of each compressor chamber.Adopt the shortcoming of this equal oily method to be: when compressor during more than two, each compressor chamber connects thick oil equalizing pipe and balance pipe, not only can give produce, transportation make troubles, maintenance, change accessory and bring very big inconvenience.And work as two compressor volumes not simultaneously, and for guaranteeing the pasta unanimity, require the setting height(from bottom) of compressor also inconsistent, give like this to install and bring difficulty again.In addition, the KunieSekigami of Japan, Kouji Nagae. is at the freezing magazine Vol.70 of nineteen ninety-five, delivered " the big capacity W type building air-conditioner system that has unit, a plurality of indoor and outdoor " among the No812Jun.P628.It is on each compressor exhaust pipe oil eliminator to be set, and oil eliminator joins with the magnetic valve that is provided with and forms the oil circuit balance pipe, again by the switching that oil surface sensor comes information control magnetic valve is set in the compressor, with control refrigeration oil pasta.When the compressor rich oil, corresponding closed electromagnetic valve is opened during oil starvation, and the refrigeration oil in the preceding oil eliminator is compressor oil-supplying backward, and vice versa.Adopt the shortcoming of the equal oily method of this kind to be: could realize after need proposing to be provided with in the compressor oil surface sensor requirement to manufacturer, need simultaneously to be used with magnetic valve, its reliability depends on the quality of oil surface sensor and magnetic valve, thereby cost is increased substantially.
(3) summary of the invention
At the shortcoming that exists in the above-mentioned prior art, goal of the invention of the present invention provides the low oil sharing automatic controller for multiple refrigeration compressors of a kind of cost.It is not only manufactured easily, transports, keeps in repair, changes accessory conveniently, and compressor is installed any specific (special) requirements of Wu.
In order to reach above-mentioned goal of the invention, technical scheme of the present invention realizes as follows: oil sharing automatic controller for multiple refrigeration compressors, it is made up of oil eliminator, check valve, flow controller, the store oil bag worn for the compressor of hydraulic oil and each compressor in many casings.Its design feature is, the housing of described each compressor is provided with oil-out and joins with set import, and the outlet of each store oil bag is staggered joins with set oil equalizing pipe one and oil equalizing pipe two respectively.The exhaust outlet and the oil eliminator of each compressor join, the upper outlet and the check valve inlet of oil eliminator are joined, the outlet of each check valve with go the blast pipe of condenser to join, the following outlet and the flow controller import of each oil eliminator are joined, come the air intake duct of flash-pot and the air entry of compressor separately to join and draw adapter, each flow controller outlet is joined with each adapter.Each is taken over to interlock and joins with oil equalizing pipe two and oil equalizing pipe one respectively, and oil equalizing pipe two is provided with oil-filled mouthful.Each is taken over oil equalizing pipe one or oil equalizing pipe two linkage sections and is provided with flow controller.
The present invention under the situation of not setting up oil surface sensor, magnetic valve, only uses movement-less parts such as pipeline, flow controller owing to adopt the combining structure and the annexation of above-mentioned each element, parts, can make many refrigeration compressors all oily automatically.Compared with prior art, it not only has simple in structure, dependable performance, and maintenance, transportation, replacing accessory are conveniently installed the characteristics of no specific (special) requirements to compressor.And increase cost hardly.Be applicable to the equal oil between many, the refrigeration compressor of multi-form, different sizes.
(4) description of drawings
The invention will be further described below in conjunction with accompanying drawing and concrete embodiment.
Accompanying drawing is a structure connection layout of the present invention.
(5) specific embodiment
Referring to accompanying drawing, oil sharing automatic controller for multiple refrigeration compressors, it is made up of oil eliminator 3, check valve 2, flow controller 4, the store oil bag 6 worn for the compressor 5 of hydraulic oil and each compressor 5 in four casings.On the housing of described each compressor 5, be provided with oil-out and join with 6 imports of store oil bag.The outlet of each store oil bag 6 is staggered joins with set oil equalizing pipe 1 and oil equalizing pipe 2 10 respectively.The exhaust outlet of each compressor 5 and oil eliminator 3 join, and the upper outlet of oil eliminator 3 and check valve 2 imports are joined.The outlet of each check valve 2 with go the blast pipe of condensation to join.The following outlet of each oil eliminator 3 and flow controller 4 imports are joined.Come the air intake duct of flash-pot and the air entry of compressor 5 separately to join and draw and take over 1.Each flow controller 4 outlet is joined with each adapter 1.Each is taken over 1 staggered pipe and joins with oil equalizing pipe 2 10 and oil equalizing pipe 1 respectively.Oil equalizing pipe 2 10 is provided with oil-filled device 8.Each is taken over 1 and is provided with flow controller 11 with oil equalizing pipe 1 and oil equalizing pipe 2 10 linkage sections.It is to be provided with the stop valve 7 that just uses when assembly unit is connected with each store oil bag 6 linkage section that oil equalizing pipe 1, oil equalizing pipe 2 10 take over 1 with each.The outer wall of oil equalizing pipe 1 and oil equalizing pipe 2 10 is contained by insulation material.Described flow controller 4 and flow controller 11 comprise use capillary, choke valve or damping orifice plate.
Use when of the present invention, each stop valve 7 is opened.During compressor 5 operations, the cold-producing medium high steam enters condenser behind oil eliminator 3, check valve 2.The refrigeration oil that is separated in separator 3 returns after flow controller 4 step-downs separately in the compressor 5.The end is together entered in condenser, evaporimeter and the system pipeline with cold-producing medium through check valve 2 by oil eliminator 3 isolated oil.After each position of system exists an even oil mass to distribute, come the oil of flash-pot, return each compressor 5 through air intake duct.Owing to return the oil mass of each compressor 5 can not evenly the phenomenon of certain compressor 5 rich oil or oil starvation appear promptly.When certain compressor 5 rich oil, when promptly surpassing compressor 5 operate as normal oil levels, refrigeration oil then along set oil-out on its housing flow into store oil bag 6 and the oil equalizing pipe 1 or oil equalizing pipe 2 10 that are attached thereto in.The refrigeration oil of in oil equalizing pipe 1 or oil equalizing pipe 2 10, storing, its pressure is approximately the pressure at expulsion of compressor 5, under the effect of pressure reduction, get back in the air intake duct of oil starvation compressor 5 through flow controller 11 again, the compressor 5 of oil starvation continuously is recovered to the unnecessary refrigeration oil of rich oil compressor 5, make its oil level go back up to normal work oil level scope, guarantee every compressor 5 operate as normal.In whole equal oily self-con-tained unit, if when part compressor 5 work is only arranged, the oil that retains in the system will be got back in the compressor 5 that is turning round.When the rich oil phenomenon occurring, in the rich oil compressor 5 unnecessary oil will be stored in store oil bag 6 and the oil equalizing pipe 1 or oil equalizing pipe 2 10 that are attached thereto in.After originally out-of-work compressor 5 starts, petrol starvation can occur in the short time, this moment is because the low-pressure suction of air intake duct, supplies required refrigeration oil from the store oil bag 6 of rich oil compressor 5 and oil equalizing pipe 1 or oil equalizing pipe 2 10.
According to above-mentioned embodiment, if the adapter 1 of each compressor 5 and each flow controller 11 on each oil equalizing pipe 1 or oil equalizing pipe 2 10 linkage sections are taken down and it are arranged on store oil bag 6 outlet sections of each compressor 5, make in oil equalizing pipe 1 and the oil equalizing pipe 2 10 all to be in low pressure, also can obtain effect same.
Claims (4)
1. oil sharing automatic controller for multiple refrigeration compressors, it is the oil eliminator of being worn for the compressor of hydraulic oil (5) and each compressor (5) by in many casings (3), check valve (2), flow controller (4), store oil bag (6) is formed, it is characterized in that, the housing of described each compressor (5) is provided with oil-out and joins with set import, the outlet of each store oil bag (6) is staggered joins with set oil equalizing pipe one (9) and oil equalizing pipe two (10) respectively, exhaust outlet of each compressor (5) and oil eliminator (3) join, the upper outlet of oil eliminator (3) and check valve (2) import are joined, the outlet of each check valve (2) with go the blast pipe of condenser to join, following outlet of each oil eliminator (3) and flow controller (4) import are joined, come the air intake duct of flash-pot and the air entry of compressor (5) separately to join and draw adapter (1), each flow controller (4) outlet is joined with each adapter (1), each is taken over, and (1) is staggered to join with oil equalizing pipe two (10) and oil equalizing pipe one (9) respectively, oil equalizing pipe two (10) is provided with oil-filled mouthful (8), and each is taken over (1) and is provided with flow controller (11) with oil equalizing pipe one (9) or oil equalizing pipe two (10) linkage sections.
2. according to the described oil sharing automatic controller for multiple refrigeration compressors of claim 1, it is characterized in that: described each flow controller (11) also can be located at the linkage section of each store oil bag (6) and oil equalizing pipe one (9) or oil equalizing pipe two (10).
3. according to claim 1 or 2 described oil sharing automatic controller for multiple refrigeration compressors, it is characterized in that: described flow controller (4) and flow controller (11) comprise use capillary, choke valve, damping orifice plate.
4. according to the described oil sharing automatic controller for multiple refrigeration compressors of claim 3, it is characterized in that: described oil equalizing pipe one (9), oil equalizing pipe two (10) are equipped with stop valve (7) with each adapter (1) and each store oil bag (6) company's stage, and the outer wall of oil equalizing pipe one (9) and oil equalizing pipe two (10) is contained by insulation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99109589 CN1097711C (en) | 1999-07-13 | 1999-07-13 | Oil-balancing self-control device for multiple refrigeration compressors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99109589 CN1097711C (en) | 1999-07-13 | 1999-07-13 | Oil-balancing self-control device for multiple refrigeration compressors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1280284A CN1280284A (en) | 2001-01-17 |
| CN1097711C true CN1097711C (en) | 2003-01-01 |
Family
ID=5273999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99109589 Expired - Fee Related CN1097711C (en) | 1999-07-13 | 1999-07-13 | Oil-balancing self-control device for multiple refrigeration compressors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1097711C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344915C (en) * | 2003-02-27 | 2007-10-24 | 东芝开利株式会社 | Refrigeration cycle apparatus |
| JP4464333B2 (en) * | 2005-08-12 | 2010-05-19 | 三星電子株式会社 | Compressor oil leveling device and refrigerator |
| KR101266657B1 (en) | 2006-10-17 | 2013-05-28 | 엘지전자 주식회사 | air conditioner |
| EP2646762B1 (en) * | 2010-12-02 | 2016-03-30 | Carrier Corporation | Oil compensation in a refrigeration circuit |
| CN102200360B (en) * | 2011-01-28 | 2013-08-14 | 大连三洋压缩机有限公司 | Oil equalization system of compressor |
| CN102650479A (en) * | 2011-02-23 | 2012-08-29 | 珠海格力电器股份有限公司 | Multi-connected air conditioning unit and oil circuit system thereof |
-
1999
- 1999-07-13 CN CN 99109589 patent/CN1097711C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1280284A (en) | 2001-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TONGFANG CO., LTD.; QINGHUA UNIVERSITY Free format text: FORMER NAME OR ADDRESS: TSINGHUA TONGFANG CO., LTD.; QINGHUA UNIVERSITY |
|
| CP03 | Change of name, title or address |
Address after: 100083 A, block 2907, Tongfang science and Technology Plaza, Beijing Co-patentee after: Tsinghua University Patentee after: Tongfang Co., Ltd. Address before: 100083 A, block 2907, Tongfang science and Technology Plaza, Beijing Co-patentee before: Tsinghua University Patentee before: Qinghua Tongfang Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030101 Termination date: 20120713 |