CN2896087Y - Domestic air-conditioner - Google Patents
Domestic air-conditioner Download PDFInfo
- Publication number
- CN2896087Y CN2896087Y CNU2006200331857U CN200620033185U CN2896087Y CN 2896087 Y CN2896087 Y CN 2896087Y CN U2006200331857 U CNU2006200331857 U CN U2006200331857U CN 200620033185 U CN200620033185 U CN 200620033185U CN 2896087 Y CN2896087 Y CN 2896087Y
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- aluminium flat
- flat conduit
- micropore aluminium
- collector
- propane
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Abstract
The utility model discloses a domestic air-conditioner that propane is used as refrigerating fluid and the invention has high safety performance. The domestic air-conditioner comprises a totally enclosed compressor, a condenser, a capillary pipe, an evaporator and a connecting pipe to constitute a system loop, a multiple compact heat exchanger made of millipore aluminum flat pipe is used to reduce approximately 85% of the refrigerant charge, and for the thermal physical property, the heat conductivity coefficient of propane is higher than R22 and the flowed friction is lower than R22, the millipore heat exchanger is favorable for the heat exchange property of propane and the safety is sharply increased. Meanwhile, the domestic air-conditioner, that propane is used as refrigerating fluid, has profound meaning for environmental protection.
Description
Technical field
The utility model relates to a kind of air-conditioner, and especially a kind of is the domestic air conditioner of cold-producing medium with propane.
Background technology
At present, along with " depletion of the ozone layer " problem progressively is resolved, another environmental problem " greenhouse effects " is more outstanding.For eliminating the destruction of cold-producing medium to ozone layer, the domestic air conditioning alternative refrigerant is mainly selected HFC class cold-producing medium such as R407C and R410A etc. for use at present, according to " Kyoto Protocol ", the HFC cold-producing medium belongs to the greenhouse gases of restricted discharge, and using the HFC cold-producing medium is not ideal scheme.Be the protection environment, using the new refrigerant that does not destroy environment has been the domestic air conditioning development trend, and from domestic air conditioning alternative refrigerants development prospect, natural refrigerant causes the concern of academic and enterprise, wherein CO
2With hydrocarbon be material more likely, selecting the natural refrigerant cold-producing medium is optimal scheme.Because CO
2The substitute technology complexity, the cost height, refrigeration EER (ENERGY EFFICIENCYRATIO-Energy Efficiency Ratio) and the cold-producing medium that adopts at present have big gap, from large-scale application suitable distance are arranged.And hydrocarbon has been widely applied at small-type refrigeration appliances such as refrigerators as cold-producing medium, cost does not increase substantially, EER is better than alternative cold-producing medium, should say with hydrocarbon and be arranged fine development prospect as cold-producing medium, but because hydrocarbon belongs to flammable cold-producing medium, therefore hydrocarbon uses and is subjected to very big influence, is the cold-producing medium that is subjected to very big dispute.Propane (cold-producing medium numbering R290) is a kind of in the natural refrigerant, it is very approaching with the R22 characteristic of using at present, and thermal performance is better than R22 and R410A, but because propane belongs to flammable cold-producing medium, in use have safety problem, therefore the use of flammable cold-producing medium is restricted always.Propane is real two green refrigerant, and cost is low, is the main component of liquefied petroleum gas, to environment and body harmless.
The condition of the burning of propane is as follows:
1, the aerial concentration of propane should be between the burning bound, burning lower limit 2.1% (about 39g/m
3), the burning upper limit 9.5% (about 177g/m
3);
2, naked light, spark, static and reach suitable energy and temperature;
More than two conditions must possess simultaneously, just can cause propane burning.If reduce the charging amount of propane in air-conditioning, even it is leaked at confined space, also can't reach the burning lower limit, can improve greatly with propane is the security of the air-conditioning of cold-producing medium.Propane air-conditioning system performance is better than existing R22 air-conditioning system, is better than or suitable with R410 air-conditioning system performance, will select to produce significant impact to the R22 substitute if can further test with theoretical research.
Since propane belongs to flammable cold-producing medium, explosion limit is arranged, thereby adopt it safety requirements will be arranged, need closed processes in order to avoid occur the measures such as electric spark except automatically controlled part as refrigeration machine, reduce charging amount, even it is safe basic its propane to be leaked also can not reach explosion limit to be only.The external at present caliber that reduces heat-transfer pipe that normally adopts reduces charging amount, but principal mode still adopts the pipe type heat exchanger, thereby its internal capacity that reduces is limited.In addition, drag relationship when the heat exchange efficiency of heat exchanger and pipe outer air circulation and circulation is bigger, under circulation area one stable condition of facining the wind, the caliber that reduces heat-transfer pipe can cause tube pitch from too small, thereby increased air from air flowing collateral resistance between the heat-transfer pipe, and then influencing air quantity, air side performance decline can cause the air-conditioning overall performance to descend, and finally influences the heat exchange effect.
The utility model content
Technical problem to be solved in the utility model provide a kind of safe, be the domestic air conditioner of cold-producing medium with propane.
The technical scheme that its technical problem that solves the utility model adopts is: this domestic air conditioner comprises the system circuit that fully closed compressor, condenser, capillary, evaporimeter and connecting pipe thereof constitute, and condenser and evaporimeter adopt the multiple stream compact heat exchanger of being made by the micropore aluminium flat conduit.
Further be, above-mentioned multiple stream compact heat exchanger comprises backplate, fin, the micropore aluminium flat conduit, blocking cap, right collector, inlet tube, dividing plate, outlet, left side collector, the micropore aluminium flat conduit is many groups, be arranged in parallel between the micropore aluminium flat conduit on the same group, the two ends of micropore aluminium flat conduit connect right collector and left collector respectively, separate and to form polyphone by being arranged on dividing plate on right collector and the left collector between micropore aluminium flat conduit of adjacent each group, blocking cap is arranged on the end of right collector and left collector, fin is arranged between the micropore aluminium flat conduit, and inlet tube and outlet are separately positioned on the right collector or left collector at polyphone passage two ends.
Further be, above-mentioned condenser is respectively organized the micropore aluminium flat conduit on the micropore aluminium flat conduit from the arrival end to the port of export number successively decreases successively, and evaporimeter is respectively organized the micropore aluminium flat conduit on the micropore aluminium flat conduit from the arrival end to the port of export number increases progressively successively.
The beneficial effects of the utility model are: because air-conditioning system fills cold-producing medium and the heat exchanger internal capacity is directly proportional, behind the multiple stream compact heat exchanger of employing by the making of micropore aluminium flat conduit, with comparing of the pipe type heat exchanger of traditional φ 9.52mm heat-transfer pipe, because aluminium flat conduit is extremely thin, the about 1.9mm of tube wall, internal capacity is very little, uses this heat exchanger, compare with φ 9.52mm pipe type heat exchanger, refrigerant charge can reduce about 85% at most.Because the voltage endurance capability of aluminum pipe is littler than copper pipe, because of R22 operating pressure height, therefore, can not use the aluminum heat exchanger in the R22 system.By contrast, because the operating pressure ratio R22 of propane is low, can use the aluminum heat exchanger fully for 60 ℃ in condensation temperature.And aspect thermophysical property, propane thermal conductivity ratio R22 height, flow resistance is littler than R22, uses the performance that the micropore heat exchanger more helps the propane heat exchange property instead.After changing domestic air conditioning pipe type heat exchanger commonly used into multiple stream compact heat exchanger, can significantly reduce refrigerant charge.In identical air-conditioning system, result of the test shows propane charging amount half (about 46%) less than R22 at present, and the cabinet-type air conditioner that is 5000W with present common refrigerating capacity is an example, and indoor and outdoor all adopts the pipe type heat exchanger of φ 9.52, about the about 1600g of R22 charging amount.If do not add change, use propane instead with existing system, charging amount is about 1600 * 46%=736g, the cold-producing medium that wherein is present in condenser and evaporimeter is about 736 * 90%=662.4g, if change condenser and evaporimeter into suitable with it multiple stream compact heat exchanger, the content of propane in condenser and evaporimeter is the highest in theory can be reduced to 745.2 * 15%=99.36g, add the content in compressor and the pipeline, the charging amount of actual propane in air-conditioning of the present utility model is about: 99.36+ (736-662.4)=172.96g.This result significantly improves the security of air-conditioning of the present utility model with many national flammable refrigerant charge upper limit 150g that use on refrigerator, refrigerator-freezer that allow are very approaching in the world.From security consideration, foreign standard regulation, the flammable cold-producing medium scope of application should be lower than 20% of burning lower limit, and promptly the propane air-conditioning should be less than 39g/m
3* 20%=7.8g/m
3Calculate with room height 3m, the usable floor area of the cabinet-type air conditioner of the 5000w of filled 172.96g is not less than 194.58 ÷, 7.8 ÷, 3 ≈ 7.39m
2If adopt common existing pipe type heat exchanger, press 736g propane charging amount and calculate, need the cabinet-type air conditioner usable floor area to be not less than 736 ÷, 7.8 ÷, 3 ≈ 31.45m
2General 5000W refrigerating capacity air-conditioning usable floor area is greater than 20m
2, obviously, use this type of multiple stream compact heat exchanger after, the security of propane air-conditioning is improved greatly.If in the smaller window air conditioner of refrigerating capacity, use propane as cold-producing medium, because R22 charging amount own is little, if adopt compact heat exchanger, will make the propane charging amount reduce to suitable with refrigerator (cabinet), be that the domestic air conditioner of cold-producing medium has high security with propane thereby make it.
Description of drawings
Fig. 1 is the outline drawing of the pipe type heat exchanger of existing domestic air conditioning use.
Fig. 2 is the exploded view of multiple stream compact heat exchanger of the present utility model.
Fig. 3 is the profile of micropore aluminium flat conduit of the present utility model.
Fig. 4 is the schematic flow sheet of cold-producing medium in the multiple stream compact heat exchanger of the present utility model.
Fig. 5 is the schematic flow sheet that adopts multiple stream compact heat exchanger air-conditioning system.
Be labeled as among the figure: backplate 1, fin 2, micropore aluminium flat conduit 3, blocking cap 4, right collector 5, inlet tube 6, dividing plate 7, outlet 8, left collector 9, condenser 10, compressor 11, capillary 12, evaporimeter 13.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As Fig. 1～shown in Figure 5, domestic air conditioner of the present utility model, adopt propane as cold-producing medium, air-conditioner comprises the system circuit that fully closed compressor 11, condenser 10, capillary 12, evaporimeter 13 and connecting pipe thereof constitute, condenser 10 and evaporimeter 13 adopt the multiple stream compact heat exchanger of being made by micropore aluminium flat conduit 3, thereby the charging amount of its propane is reduced significantly, improve the security of its use.Micropore aluminium flat conduit 3 is an existing product, experiment showed, that the performance of the heat exchanger that adopts 3 making of micropore aluminium flat conduit is better than existing pipe type heat exchanger.
Multiple stream compact heat exchanger comprises backplate 1, fin 2, micropore aluminium flat conduit 3, blocking cap 4, right collector 5, inlet tube 6, dividing plate 7, outlet 8, left collector 9, micropore aluminium flat conduit 3 is many groups, be arranged in parallel between the micropore aluminium flat conduit 3 on the same group, the two ends of micropore aluminium flat conduit 3 connect right collector 5 and left collector 9 respectively, form polyphone by dividing plate 7 separations that are arranged on right collector 5 and the left collector 9 between the micropore aluminium flat conduit of adjacent each group.Blocking cap 4 is arranged on the end of right collector 5 and left collector 9, plays the effect of right collector 5 of sealing and left collector 9.Fin 2 is arranged between the micropore aluminium flat conduit 3, and the cold-producing medium that air flows through in fin 2 and the micropore aluminium flat conduit 3 carries out exchange heat, plays the effect that increases heat exchange area, improves heat exchange efficiency.Inlet tube 6 and outlet 8 are different according to flow circuits, are separately positioned on the right collector 5 or left collector 9 at flow channel two ends.
According to system's inner refrigerant rule that specific volume changes in cyclic process, condenser 10 is respectively organized micropore aluminium flat conduit 3 on the micropore aluminium flat conduit 3 from the arrival end to the port of export number successively decreases successively, and evaporimeter 13 is respectively organized micropore aluminium flat conduit 3 on the micropore aluminium flat conduit 3 from the arrival end to the port of export number increases progressively successively.
Embodiment: as shown in Figure 5, domestic air conditioner of the present utility model adopts propane as cold-producing medium, and air-conditioner comprises the system circuit that compressor 11, condenser 10, capillary 12, evaporimeter 13 and connecting pipe thereof constitute.Propane is 4 flow processs in condenser 10 and evaporimeter 12, wherein condenser 10 is divided into 4 groups of totally 27 micropore aluminium flat conduits 3, each flow process is one group, successively decrease successively from the flow through number of micropore aluminium flat conduit 3 of the outlet that enters the mouth, be respectively 13 pipes, 8 pipes, 4 pipes and 2 pipes, when meeting the condensation of refrigerant heat exchange, change liquid state into, the rule that specific volume reduces gradually by gaseous state; Evaporimeter 13 is divided into 4 groups of totally 18 micropore aluminium flat conduits 3, each flow process is one group, increase progressively successively from the flow through number of micropore aluminium flat conduit 3 of the outlet that enters the mouth, be respectively 2,4,5,7, to meet cold-producing medium is gradually become overheated gas by gas-liquid two-phase rule.In the refrigeration system, each parts connects by the aluminum pipe or the copper pipe of routine.When copper pipe links to each other with the aluminum heat exchanger, can when all using aluminum pipe, can adopt flame brazing method to link together by usual Lip river gram ring or method for welding, these all be the usual connected modes that adopts, and repeat no more here.
Claims (3)
1, domestic air conditioner, comprise the system circuit that fully closed compressor (11), condenser (10), capillary (12), evaporimeter (13) and connecting pipe thereof constitute, it is characterized in that: condenser (10) adopts by micropore aluminium flat conduit (3) with evaporimeter (13) and is connected the multiple stream compact heat exchanger of making.
2, domestic air conditioner as claimed in claim 1, it is characterized in that: multiple stream compact heat exchanger comprises backplate (1), fin (2), micropore aluminium flat conduit (3), blocking cap (4), right collector (5), inlet tube (6), dividing plate (7), outlet (8), left side collector (9), micropore aluminium flat conduit (3) is many groups, be arranged in parallel between the micropore aluminium flat conduit (3) on the same group, the two ends of micropore aluminium flat conduit (3) connect right collector (5) and left collector (9) respectively, form polyphone by dividing plate (7) separation that is arranged on right collector (5) and the left collector (9) between micropore aluminium flat conduit of adjacent each group, blocking cap (4) is arranged on the end of right collector (5) and left collector (9), fin (2) is arranged between the micropore aluminium flat conduit (3), and inlet tube (6) and outlet (8) are separately positioned on the right collector (5) or left collector (9) at polyphone passage two ends.
3, domestic air conditioner as claimed in claim 1 or 2, it is characterized in that: condenser (10) is respectively organized the micropore aluminium flat conduit (3) on the micropore aluminium flat conduit (3) from the arrival end to the port of export number successively decreases successively, and evaporimeter (13) is respectively organized increasing progressively successively of micropore aluminium flat conduit (3) number on the micropore aluminium flat conduit (3) from the arrival end to the port of export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200331857U CN2896087Y (en) | 2006-02-24 | 2006-02-24 | Domestic air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200331857U CN2896087Y (en) | 2006-02-24 | 2006-02-24 | Domestic air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2896087Y true CN2896087Y (en) | 2007-05-02 |
Family
ID=38065663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200331857U Expired - Fee Related CN2896087Y (en) | 2006-02-24 | 2006-02-24 | Domestic air-conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2896087Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243026A (en) * | 2010-05-11 | 2011-11-16 | 王庆鹏 | Micro-pore type air heat exchanger structure and typical heating air conditioner application form |
-
2006
- 2006-02-24 CN CNU2006200331857U patent/CN2896087Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243026A (en) * | 2010-05-11 | 2011-11-16 | 王庆鹏 | Micro-pore type air heat exchanger structure and typical heating air conditioner application form |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SICHUAN CHANGHONG ELECTRIC CO.,LTD. Free format text: FORMER OWNER: SICHUAN CHANGHONG ELECTRIC APPLIANCE CO., LTD. Effective date: 20090703 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090703 Address after: No. 35, Mian Xing East Road, hi tech Zone, Sichuan, Mianyang Province: 621000 Patentee after: Sichuan Changhong Air-Coditioning Co., Ltd. Address before: No. 35, Mian Xing East Road, hi tech Zone, Sichuan, Mianyang Province: 621000 Patentee before: Sichuan Changhong Electrical Appliance Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070502 Termination date: 20150224 |
|
| EXPY | Termination of patent right or utility model |