CN102645056A - Refrigerating device for flammable refrigerant - Google Patents
Refrigerating device for flammable refrigerant Download PDFInfo
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- CN102645056A CN102645056A CN2011100448423A CN201110044842A CN102645056A CN 102645056 A CN102645056 A CN 102645056A CN 2011100448423 A CN2011100448423 A CN 2011100448423A CN 201110044842 A CN201110044842 A CN 201110044842A CN 102645056 A CN102645056 A CN 102645056A
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Abstract
The invention relates to a refrigerating device for flammable refrigerant. The refrigerating device comprises a compressor, an outdoor heat exchanger, an expansion mechanism, an indoor heat exchanger and an oil separator. The high-pressure outlet of the compressor is communicated with the inlet of the oil separator. The outlet of the oil separator, the outdoor heat exchanger, the expansion mechanism, the indoor heat exchanger and the low-pressure inlet of the compressor are sequentially communicated. An oil return pipe which is communicated with the internal part of the compressor is arranged on the oil separator. The entire refrigerating system is filled with the flammable refrigerant. The refrigerating system additionally comprises a liquid storage device. The liquid storage device is serially connected between the third port of a four-way valve and the low-pressure inlet of the compressor. The flammable refrigerant can be flammable refrigerant such as R290, R1270, R161 and R152a. The refrigerating device for the flammable refrigerant has the characteristics of simple and reasonable structure, low manufacturing cost, reliable operation, high heat exchange efficiency and wide application scope.
Description
Technical field
The present invention relates to a kind of refrigeration system, particularly a kind of refrigerating plant that is used for flammable cold-producing medium.
Background technology
The R22 cold-producing medium is classified as the cold-producing medium that time limit is progressively eliminated by " Montreal is agreed " book.Europe, Japan begin to turn to the R410A cold-producing medium to substitute already, and the U.S. also will forbid that in 2010 R22 uses in new refrigeration product.China has also accelerated the paces that R22 eliminates, and will be frozen in the average level in 2009～2010 years in 2013, will reach 10% the requirement of cutting down baseline values in 2015.More domestic main brand also begin to release the environment-friendly air conditioner of R410A as cold-producing medium at present.Yet the GWP value of R410A is also bigger than R22, and " Kyoto Protocol " classified R410A as the greenhouse gases of controlled discharge, so R410A never is long-range replacement scheme.
As HCFC (like R22), the alternative refrigerant of HFC (like R410A, R407C)), carbon-hydrogen refrigerant industry are the most paid close attention to.But, when carbon-hydrogen refrigerant is used for air-conditioner system, a very important problem is arranged, be exactly that it has high combustibility, must limit the cold-producing medium enclosed volume of the air-conditioning system that adopts carbon-hydrogen refrigerant.Therefore, be necessary to reduce significantly the amount of refrigerant in the compressor housing in the air-conditioning system, thereby make the cold-producing medium enclosed volume of air-conditioning system also be able to reduce.Inner at compressor; Except more cold-producing medium is contained in the inner space; The more cold-producing medium that also can dissolve in the lubricating oil, therefore, mixing when compressor adopts with immiscible lubricating oil or the part of cold-producing medium (refers to that oil and cold-producing medium dissolve each other down at the partial condition of refrigeration system operation; Insoluble under the partial condition) lubricating oil the time, can significantly reduce the amount of refrigerant in the lubricating oil.
But during lubricating oil that immiscible lubricating oil of this employing or part mix, lubricating oil can be discharged to the outdoor heat converter and indoor heat converter of air-conditioning system along with the blast pipe of the cold-producing medium after the compression from compressor; And in the pipeline of outdoor heat converter and indoor heat converter, form oil film; Thereby have influence on the heat exchange efficiency of outdoor heat converter and indoor heat converter, reduce the efficiency of air-conditioning system, and; Because cold-producing medium is with lubricating oil is immiscible or partly mix; The lubricating oil that is discharged in outdoor heat converter and the indoor heat converter is difficult to along with cold-producing medium is got back in the compressor, and this will cause the inner lubricating oil content of compressor constantly to reduce, make compressor lubricated and sealing effectiveness worse and worse; Have influence on the Performance And Reliability of compressor, finally cause compressor damage.
Summary of the invention
The object of the invention aim to provide a kind of simple and reasonable, cost of manufacture is low, reliable, the refrigerating plant that is used for flammable cold-producing medium that heat exchange efficiency is high, applied widely, to overcome weak point of the prior art.
A kind of refrigerating plant that is used for flammable cold-producing medium by this purpose design; Comprise compressor, outdoor heat converter, expansion mechanism and indoor heat converter; Its architectural feature is also to comprise oil eliminator; The high-pressure outlet of compressor communicates with the import of oil eliminator, and the low-pressure inlet of the outlet of oil eliminator, outdoor heat converter, expansion mechanism, indoor heat converter and compressor communicates successively, and oil eliminator is provided with the oil return pipe that communicates with compressor inside; Be filled with flammable cold-producing medium in the whole refrigeration system, be filled with lubricating oil insoluble with this flammable cold-producing medium or that part mixes in the compressor.
Refrigeration system also comprises cross valve; The outlet of oil eliminator communicates with first interface of cross valve; Second interface of cross valve communicates with an end of outdoor heat converter; The other end of outdoor heat converter communicates with an end of indoor heat converter through behind the expansion mechanism, and the other end of indoor heat converter communicates with the 4th interface of cross valve, and the 3rd interface of cross valve communicates with the low-pressure inlet of compressor.
Refrigeration system also comprises reservoir, and this reservoir is serially connected between the low-pressure inlet of the 3rd interface and compressor of cross valve.
The present invention is provided with the oil eliminator with Oil-gas Separation effect at the air exit place of compressor; This oil eliminator is provided with and is used for the lubricating oil of separating is sent back to the inner oil return pipe of compressor; Prevent that through oil eliminator lubricating oil from entering into outdoor heat converter and indoor heat converter in a large number, and can the lubricating oil of separating be turned back to the inside of compressor, thereby guarantee that compressor inside has enough lubricating oil; And be lowered into two devices simultaneously: the oil mass of the lubricating oil in evaporimeter and the condenser; So, in the refrigeration system of using strong combustible refrigerant, can use lubricating oil immiscible or that only partly mix with cold-producing medium; Thereby can significantly reduce the amount of refrigerant that is dissolved in the lubricating oil; Make amount of refrigerant in the refrigeration system satisfy the requirement for restriction of refrigerant charge, the security reliability when guaranteeing the operation of compressor, and guaranteed the heat exchange efficiency of outdoor heat converter and indoor heat converter.
Flammable cold-producing medium among the present invention can adopt R290, R1270, R161 and R152a etc., its have simple and reasonable, cost of manufacture is low, reliable, heat exchange efficiency is high, advantage of wide range of application.
Description of drawings
Fig. 1 is one embodiment of the invention structural representation.
Among the figure: 1 is compressor, and 2 is oil eliminator, and 3 is cross valve, and 4 is outdoor heat converter, and 5 is expansion mechanism, and 6 is indoor heat converter, and 7 is reservoir, and 8 is oil return pipe.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Referring to Fig. 1; Originally the refrigerating plant that is used for flammable cold-producing medium; Comprise compressor 1, outdoor heat converter 4, expansion mechanism 5 and indoor heat converter 6 and oil eliminator 2; The high-pressure outlet of compressor 1 communicates with the import of oil eliminator 2, and the low-pressure inlet of the outlet of oil eliminator 2, outdoor heat converter 4, expansion mechanism 5, indoor heat converter 6 and compressor 1 communicates successively, and oil eliminator 2 is provided with the oil return pipe 8 that communicates with compressor 1 inside.Be filled with flammable cold-producing medium in the whole refrigeration system, whole system is included in the tube connector between aforementioned each parts certainly, is filled with lubricating oil insoluble with this flammable cold-producing medium or that part mixes in the compressor 1.
Below only be as single cold or Dan Nuanyong; When it need not only freeze but also heat; Refrigeration system also comprises cross valve 3; The outlet of oil eliminator 2 communicates with the first interface a of cross valve 3, and the second interface b of cross valve 3 communicates with an end of outdoor heat converter 4, and the other end of outdoor heat converter 4 communicates with an end of indoor heat converter 6 through expansion mechanism 5 backs; The other end of indoor heat converter 6 communicates with the 4th interface d of cross valve 3, and the 3rd interface c of cross valve 3 communicates with the low-pressure inlet of compressor 1.
For the operational effect and the stability that improve refrigeration system, refrigeration system also comprises reservoir 7, and this reservoir 7 is serially connected between the low-pressure inlet of the 3rd interface c and compressor 1 of cross valve 3.
Claims (3)
1. refrigerating plant that is used for flammable cold-producing medium; Comprise compressor (1), outdoor heat converter (4), expansion mechanism (5) and indoor heat converter (6); It is characterized in that also comprising oil eliminator (2); The high-pressure outlet of compressor (1) communicates with the import of oil eliminator (2), and the low-pressure inlet of the outlet of oil eliminator (2), outdoor heat converter (4), expansion mechanism (5), indoor heat converter (6) and compressor (1) communicates successively, and oil eliminator (2) is provided with the oil return pipe (8) that communicates with compressor (1) inside; Be filled with flammable cold-producing medium in the whole refrigeration system, be filled with lubricating oil insoluble with this flammable cold-producing medium or that part mixes in the compressor (1).
2. the refrigerating plant that is used for flammable cold-producing medium according to claim 1; It is characterized in that also comprising cross valve (3); The outlet of oil eliminator (2) communicates with first interface (a) of cross valve (3); Second interface (b) of cross valve (3) communicates with an end of outdoor heat converter (4); The other end of outdoor heat converter (4) communicates with an end of indoor heat converter (6) through expansion mechanism (5) back, and the other end of indoor heat converter (6) communicates with the 4th interface (d) of cross valve (3), and the 3rd interface (c) of cross valve (3) communicates with the low-pressure inlet of compressor (1).
3. the refrigerating plant that is used for flammable cold-producing medium according to claim 1 and 2 is characterized in that also comprising reservoir (7), and this reservoir (7) is serially connected between the low-pressure inlet of the 3rd interface (c) and compressor (1) of cross valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100448423A CN102645056A (en) | 2011-02-16 | 2011-02-16 | Refrigerating device for flammable refrigerant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100448423A CN102645056A (en) | 2011-02-16 | 2011-02-16 | Refrigerating device for flammable refrigerant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102645056A true CN102645056A (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100448423A Pending CN102645056A (en) | 2011-02-16 | 2011-02-16 | Refrigerating device for flammable refrigerant |
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| CN (1) | CN102645056A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776228A (en) * | 2004-11-19 | 2006-05-24 | Lg电子株式会社 | Compressor oil recovering apparatus and multi-unit air conditioner equiped with the same |
| JP2007170769A (en) * | 2005-12-26 | 2007-07-05 | Hitachi Ltd | Air conditioner |
| CN200965365Y (en) * | 2006-09-28 | 2007-10-24 | 四川长虹电器股份有限公司 | Split-type air conditioning unit |
| WO2009059488A1 (en) * | 2007-11-09 | 2009-05-14 | Guang Dong Mei Zhi Refrigeration Equipment Co., Ltd | A rotary compressor with low pressure in its shell and methods for controlling its cold media and oil and application thereof |
-
2011
- 2011-02-16 CN CN2011100448423A patent/CN102645056A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776228A (en) * | 2004-11-19 | 2006-05-24 | Lg电子株式会社 | Compressor oil recovering apparatus and multi-unit air conditioner equiped with the same |
| JP2007170769A (en) * | 2005-12-26 | 2007-07-05 | Hitachi Ltd | Air conditioner |
| CN200965365Y (en) * | 2006-09-28 | 2007-10-24 | 四川长虹电器股份有限公司 | Split-type air conditioning unit |
| WO2009059488A1 (en) * | 2007-11-09 | 2009-05-14 | Guang Dong Mei Zhi Refrigeration Equipment Co., Ltd | A rotary compressor with low pressure in its shell and methods for controlling its cold media and oil and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 熊爱凌: "小型热泵式空调制冷剂R290及其润滑油混合物特性研究", 《中国优秀博士/硕士学位论文全文数据库》 * |
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Application publication date: 20120822 |