CN103453696A - Heat exchanger for carbon dioxide air-conditioning system - Google Patents
Heat exchanger for carbon dioxide air-conditioning system Download PDFInfo
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- CN103453696A CN103453696A CN2013104299893A CN201310429989A CN103453696A CN 103453696 A CN103453696 A CN 103453696A CN 2013104299893 A CN2013104299893 A CN 2013104299893A CN 201310429989 A CN201310429989 A CN 201310429989A CN 103453696 A CN103453696 A CN 103453696A
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Abstract
The invention belongs to the technical field of air conditioners, and relates to a heat exchanger for a carbon dioxide air-conditioning system. The heat exchanger comprises a distributor, a header pipe and a copper pipe which are successively connected to one another, wherein one end of the header pipe is used for distributing refrigerating fluid of the inlet and the outlet of the heat exchanger and is connected with a system; the other end of the header pipe is connected with the coiled copper pipe; a plurality of fins are perpendicularly arranged on the copper pipe; a refrigerating fluid side of the heat exchanger passes through the copper pipe; and an air side of the heat exchanger penetrates in the fins in parallel. The heat exchanger with the small pipe diameter is quite easy to machine technologically, and requirements on pressure resistance and properties can be met. In addition, the heat exchanger is suitable for the volume-limited inside environment of an automobile, resists pressure, and is simple in structure.
Description
Technical field
What the present invention relates to is a kind of device of air-conditioning technical field, specifically a kind of heat exchanger for carbon dioxide air conditioning system.
Background technology
Under the overall background extensively be taken seriously at greenhouse effects, each air conditioner industry has started the upsurge that substitutes existing cold-producing medium, R22 traditional in the family expenses air-conditioning is owing to having certain ODP and higher GWP value, will be gradually by R410A, other environmental protection refrigerants such as R290 substitute, and car air-conditioner is also also unexceptional, there is higher GWP value in traditional Refrigerant for Automobile R134a, more easily produce greenhouse effects, the environmental protection refrigerant that substitutes car air-conditioner has HFO1234yf, carbon dioxide etc., but the HFO1234yf price is comparatively expensive, the price that carbon dioxide is cheap with it, safe and harmless, the many advantages such as environmental protection are subject to the favor of extensive businessman, if use carbon dioxide air conditioning system, the problem that must face is very high evaporation, condensing pressure, traditional vehicle is not sufficient to bear so high pressure with micro-channel heat exchanger, thereby improve by modes such as optimization headers, burst pressure must increase considerably header and flat tube thickness improves voltage endurance capability, this makes the weight of heat exchanger further increase, simultaneously due to HVAC limited space in automobile, the evaporimeter of structure optimization while especially using as to(for) parallel-flow heat exchanger is difficulty comparatively.
Through the retrieval to prior art, find, Chinese patent literature CN101142452, open day 2008-03-12, disclose a kind of refrigeration system, comprising: compressor at least drives cold-producing medium under the first mode of system operation along fluid passage; First Heat Exchanger is positioned at the downstream of compressor in first mode along fluid passage; The second heat exchanger is positioned at the upstream of compressor in first mode along fluid passage; With pressure regulator or expansion gear, it is positioned at the downstream of First Heat Exchanger and the upstream of the second heat exchanger in first mode along fluid passage; Wherein: in described First Heat Exchanger and the second heat exchanger, at least one comprises flat tube heat exchanger.But defect and the deficiency of this technology be, the flat tube structure of its snakelike flat pipe heat exchanger with the more difficult realization of copper, and is not enough to bear in air conditioning for automobiles the high pressure while being used as condenser with its voltage endurance capability of aluminium on technique.
Summary of the invention
The present invention is according to the inadequate problem of traditional aluminum parallel-flow heat exchanger voltage endurance capability in the existing automobile-used carbon dioxide system of above-mentioned prior art, a kind of heat exchanger for carbon dioxide air conditioning system is proposed, the small-pipe diameter heat exchanger used, be very easy to processing on technique, and can meet withstand voltage and requirement performance; Be applicable to the limited environment inside car of volume, simple for structure in the time of withstand voltage.
The present invention is achieved by the following technical solutions, the present invention includes: the distributor, header and the copper pipe that connect successively, wherein: an end of header is carry out the distribution of heat exchanger inlet and outlet cold-producing medium and be connected with system, other end terminal pad around copper pipe, some fins vertically are set on copper pipe, this heat exchanger refrigerant side flows through through copper pipe, and air side is parallel through fin.
The caliber of described copper pipe is below 5mm.
Described fin is aluminum.
Technique effect
Small-pipe diameter heat exchanger of the present invention is for automobile-used carbon dioxide system, because the withstand voltage properties of copper is better than aluminium, small-pipe diameter heat exchanger can meet the burst pressure needs that carbon dioxide system is higher, the heat exchanger of fin-tube type structure of the present invention, due to simple in structure, is compared the easier implementation structure densification of parallel-flow heat exchanger and miniaturization.
The accompanying drawing explanation
Fig. 1 is heat exchanger front view of the present invention;
Fig. 2 is heat exchanger right view of the present invention;
In figure: 1 header, 2 copper pipes, 3 aluminium fins, 4 distributors.
The specific embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented take technical solution of the present invention under prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the present embodiment comprises: the distributor 4, header 1 and the copper pipe 2 that connect successively, wherein: an end of header 1 is carry out the distribution of heat exchanger inlet and outlet cold-producing medium and be connected with system, other end terminal pad around copper pipe 2, some fins 3 vertically are set on copper pipe 2, this heat exchanger refrigerant side flows through through copper pipe 2, and air side is parallel through fin 3.
The caliber of described copper pipe 2 is below 5mm.
Described fin 3 is aluminum.
There is higher GWP value in traditional Refrigerant for Automobile R134a, more easily produce greenhouse effects, the environmental protection refrigerant that substitutes car air-conditioner has HFO1234yf, carbon dioxide etc., but the HFO1234yf price is comparatively expensive, the price that carbon dioxide is cheap with it, safe and harmless, the many advantages such as environmental protection are subject to the favor of extensive businessman, use carbon dioxide air conditioning system, the problem that must face is very high evaporation, condensing pressure, traditional vehicle is not sufficient to bear so high pressure with micro-channel heat exchanger, thereby improve by modes such as optimization headers, burst pressure must increase considerably header and flat tube thickness improves voltage endurance capability, this makes the weight of heat exchanger further increase, simultaneously due to HVAC limited space in automobile, the evaporimeter of structure optimization while especially using as to(for) parallel-flow heat exchanger is difficulty comparatively, therefore the present embodiment proposes a kind of heat exchanger be more suitable for for carbon dioxide air conditioning system for vehicle.
The described small-pipe diameter heat exchanger of the present embodiment is for automobile-used carbon dioxide system, because the withstand voltage properties of copper is better than aluminium, small-pipe diameter heat exchanger can meet the burst pressure needs that carbon dioxide system is higher, in addition, the heat exchanger of fin-tube type structure, due to simple in structure, is compared the easier implementation structure densification of parallel-flow heat exchanger and miniaturization.
Tradition aluminum parallel-flow heat exchanger bearing capacity is on average at 40 kilograms, and use small-pipe diameter heat exchanger can realize 450 kilograms withstand voltage, and tube wall is in the situation that the thinner requirement that just can meet burst pressure, in addition, air conditioning for automobiles is focused on weight and two aspects of performance, from performance, compare, the heat exchange property of comparing micro-channel heat exchanger is better, but can arrive the level of original micro-channel heat exchanger by the small-pipe diameter heat exchanger after optimizing, for the voltage endurance capability of optimizing parallel-flow heat exchanger must increase the wall thickness of header, can make like this weight of heat exchanger that certain increase is arranged, and due to complex structure, thereby the miniaturization that is difficult to real heat exchanger is used in the space inner limited at automotive hvac, the parallel-flow heat exchanger that can meet performance and requirement of withstand voltage is of a size of 310x240x65mm, wherein the header caliber is 17mm, its gross weight reaches 2.81kg, and the described small-pipe diameter heat exchanger of the present embodiment that can meet performance and requirement of withstand voltage is of a size of 211x200x78mm, wherein the copper pipe caliber is 5mm, its gross weight is 1.5kg.
Under the GB operating mode, experimental data from carbon dioxide real vehicle air-conditioning system, the high-pressure of system can reach 10700kPa when normal operation, this pressure has surpassed the pressure limit that traditional parallel-flow heat exchanger can be loaded, therefore can not re-use parallel-flow heat exchanger as condenser, and small-pipe diameter heat exchanger can bear so large high pressure, and normal operation, therefore when carbon dioxide is used as car air conditioner refrigerant, it is very promising that small-pipe diameter heat exchanger is used as condenser.
Claims (2)
1. the heat exchanger for carbon dioxide air conditioning system, it is characterized in that, comprise: the distributor, header and the copper pipe that connect successively, wherein: an end of header is carry out the distribution of heat exchanger inlet and outlet cold-producing medium and be connected with system, other end terminal pad around copper pipe, some fins vertically are set on copper pipe, and this heat exchanger refrigerant side flows through through copper pipe, and air side is parallel through fin;
The caliber of described copper pipe is below 5mm;
Described fin is aluminum.
2. heat exchanger according to claim 1, is characterized in that, described heat exchanger is of a size of 211x200x78mm, and wherein the copper pipe caliber is 5mm, and its gross weight is 1.5kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104299893A CN103453696A (en) | 2013-09-18 | 2013-09-18 | Heat exchanger for carbon dioxide air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104299893A CN103453696A (en) | 2013-09-18 | 2013-09-18 | Heat exchanger for carbon dioxide air-conditioning system |
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| CN103453696A true CN103453696A (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013104299893A Pending CN103453696A (en) | 2013-09-18 | 2013-09-18 | Heat exchanger for carbon dioxide air-conditioning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341149A (en) * | 2018-11-08 | 2019-02-15 | 中车大连机车研究所有限公司 | A kind of CO2Trans critical cycle idle call gas cooler |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07234039A (en) * | 1994-02-25 | 1995-09-05 | Hitachi Ltd | Air conditioner |
| JPH09145198A (en) * | 1995-11-17 | 1997-06-06 | Sanyo Electric Co Ltd | Heat exchanger |
| JP2004279029A (en) * | 2004-07-02 | 2004-10-07 | Hitachi Ltd | Indoor unit |
| JP2005009827A (en) * | 2003-06-20 | 2005-01-13 | Matsushita Electric Ind Co Ltd | Fin tube type heat exchanger and heat pump device |
| CN1697958A (en) * | 2001-12-21 | 2005-11-16 | 贝洱两合公司 | Heat exchanger |
| CN201268217Y (en) * | 2008-09-24 | 2009-07-08 | 华南理工大学 | Carbon dioxide parallel flow integrated heat radiating device for automobile |
| CN102119314A (en) * | 2008-08-07 | 2011-07-06 | 三电株式会社 | Heat exchanger and heat pump device using same |
| CN102192619A (en) * | 2010-03-15 | 2011-09-21 | Lg电子株式会社 | Heat exchanger for air conditioner |
| CN102564194A (en) * | 2010-12-09 | 2012-07-11 | 日立电线株式会社 | Heat Pump Water Heater, Evaporator And Heat Conduction Pipe With Grooves On Inner Surface |
| CN102918348A (en) * | 2010-05-31 | 2013-02-06 | 三电有限公司 | Heat exchanger and heat pump that uses same |
-
2013
- 2013-09-18 CN CN2013104299893A patent/CN103453696A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07234039A (en) * | 1994-02-25 | 1995-09-05 | Hitachi Ltd | Air conditioner |
| JPH09145198A (en) * | 1995-11-17 | 1997-06-06 | Sanyo Electric Co Ltd | Heat exchanger |
| CN1697958A (en) * | 2001-12-21 | 2005-11-16 | 贝洱两合公司 | Heat exchanger |
| JP2005009827A (en) * | 2003-06-20 | 2005-01-13 | Matsushita Electric Ind Co Ltd | Fin tube type heat exchanger and heat pump device |
| JP2004279029A (en) * | 2004-07-02 | 2004-10-07 | Hitachi Ltd | Indoor unit |
| CN102119314A (en) * | 2008-08-07 | 2011-07-06 | 三电株式会社 | Heat exchanger and heat pump device using same |
| CN201268217Y (en) * | 2008-09-24 | 2009-07-08 | 华南理工大学 | Carbon dioxide parallel flow integrated heat radiating device for automobile |
| CN102192619A (en) * | 2010-03-15 | 2011-09-21 | Lg电子株式会社 | Heat exchanger for air conditioner |
| CN102918348A (en) * | 2010-05-31 | 2013-02-06 | 三电有限公司 | Heat exchanger and heat pump that uses same |
| CN102564194A (en) * | 2010-12-09 | 2012-07-11 | 日立电线株式会社 | Heat Pump Water Heater, Evaporator And Heat Conduction Pipe With Grooves On Inner Surface |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341149A (en) * | 2018-11-08 | 2019-02-15 | 中车大连机车研究所有限公司 | A kind of CO2Trans critical cycle idle call gas cooler |
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Application publication date: 20131218 |