CN209116593U - A kind of high pressure resistant gas cooler - Google Patents
A kind of high pressure resistant gas cooler Download PDFInfo
- Publication number
- CN209116593U CN209116593U CN201821896665.5U CN201821896665U CN209116593U CN 209116593 U CN209116593 U CN 209116593U CN 201821896665 U CN201821896665 U CN 201821896665U CN 209116593 U CN209116593 U CN 209116593U
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- Prior art keywords
- tube
- coolant channel
- fin
- gas cooler
- collector tube
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Abstract
The utility model discloses a kind of high pressure resistant gas coolers, including entrance collector tube, outlet collector tube, coolant channel and fin, multiple coolant channels independent of each other are equipped between entrance collector tube and outlet collector tube, each coolant channel is made of straight tube and U-shaped connecting tube, multiple fins are arranged in parallel in vertical straight tube direction, it is characterized in that, entrance collector tube, outlet collector tube and coolant channel are stainless steel material；The pipe outside diameter range of straight tube is 4.8mm-5.2mm；The wall thickness of straight tube is 0.5mm-0.6mm；One or more cold bridges gap is equipped in each fin, the direction in cold bridge gap is perpendicular to refrigerant flow direction.The cold bridge gap that the utility model passes through the coolant channel of stainless steel material and is arranged on fin, reduces the weight of gas cooler while promoting the refrigeration performance of air-conditioning.Therefore, the utility model has the distinguishing feature for saving space reduction energy consumption.
Description
Technical field
The utility model relates to railway vehicle air conditioner fields, more particularly, to a kind of high pressure resistant gas cooler.
Background technique
Most of refrigerant that current track vehicle air conditioning uses is R407C and R410A, as transition refrigerant, they
ODP value is 0, but GWP value is still very high, and greenhouse effects can be aggravated by being largely discharged into atmosphere.Montreal protocol
Kigali's amendment is, it is specified that various countries finally realize the reduction of HFCs baseline level 80%-85%, it means that R407c, R410a
Equal HFCs substance will be substituted.Germany railway runs giant Deutsche Bahn and calls supplier development with natural refrigerant
For the air-conditioner set of refrigerant, DB target be the year two thousand twenty on new car all using natural refrigerant air-conditioning.CO2 is as nature work
Matter, has that environmental-friendly, specific refrigerating effect is big, produces the apparent advantages such as at low cost, heat-transfer effect is good, these advantages but also
It becomes the focus of countries in the world scientist research, it is more likely that becomes next-generation refrigerant.
It is exactly that operating pressure is very high using the feature that CO2 is apparent as the air-conditioning system of refrigerant, high-voltage end design makes
With pressure not less than 14Mpa or so, this is proposed very high requirement for the pipe-line systems component such as heat exchanger.Rail vehicle is empty
The space of tune is limited, heat exchange amount require it is very high, for component when running environment is more complicated more particularly to high speed railway car
The limitation of weight is also very stringent.
It is found by being retrieved to the prior art, present aluminum micro-channel heat exchanger is relatively common for CO2 air-conditioning
Gas cooler, but aluminium pressure resistance performance is poor, and the complex environment of rail vehicle is easy to bring it about corrosion etc. now
As.
The prior art is there are also copper pipe aluminum fin heat exchanger, including entrance collector tube and outlet collector tube, entrance collector tube and
Between outlet collector tube and in order to keep its bearing capacity high, using the copper pipe of 5mm or less caliber, the tube wall of this copper pipe is thicker,
Gas converting heat area reduces in managing, and in order to reach heat transfer requirements, necessarily causes volume excessive and heavier-weight.Therefore, urgently
Need to improve the device or method of heat exchange efficiency.
Summary of the invention
The purpose of the utility model is to overcome drawbacks described above of the existing technology, provide a kind of high pressure resistant gas cooling
Device optimizes from many aspects, not only improves heat exchange efficiency, but also achievees the purpose that reduce gas cooler weight.
To achieve the above object, the technical solution of the utility model is as follows:
A kind of high pressure resistant gas cooler, including entrance collector tube, outlet collector tube, coolant channel and fin, entrance
Multiple coolant channels independent of each other are equipped between collector tube and outlet collector tube, each coolant channel is by straight tube and U-shaped
Connecting tube is constituted, and multiple fins are arranged in parallel in vertical straight tube direction, which is characterized in that
Entrance collector tube, outlet collector tube and coolant channel are stainless steel material；The pipe outside diameter range of straight tube is
4.8mm-5.2mm；The wall thickness of straight tube is 0.5mm-0.6mm；
One or more cold bridges gap is equipped in each fin, the direction in cold bridge gap is perpendicular to refrigerant flow direction.
Further, the width in the cold bridge gap is 2mm~5mm.
Further, the operation length for shortening single coolant channel increases the quantity of coolant channel.
Further, the operation length of the single coolant channel shortens 40%~60%.
Further, the entrance collector tube, outlet collector tube and coolant channel use electrophoretic process.
Further, the fin is vertical fins or corrugated fin.
Further, the fin is aluminium material, and uses electrophoretic process.
It can be seen from the above technical proposal that the utility model passes through for high-pressure gas refrigerant (such as CO2 Trans-critical cycle
Gas cooler) the requirement to weight of high pressure feature and rail vehicle, using the material of stainless steel, and to stainless steel
The wall thickness and caliber of material pipeline are studied in detail, and can adapt to the demand of high-pressure gas refrigerant pressure not with acquisition
It becomes rusty steel pipe road, in addition, further increasing setting for cold bridge gap and/or multiple flow passages short route on the basis of reducing weight
Meter, improves heat exchange efficiency in the case where not increasing heat exchanger volume, promotes the refrigeration performance of air-conditioning.
Detailed description of the invention
Fig. 1 is the main view of the gas cooler in one specific embodiment of the utility model；
Fig. 2 is the left view of gas cooler shown in Fig. 1；
Fig. 3 is the right view of gas cooler shown in Fig. 1；
Fig. 4 is the structural schematic diagram of conventional refrigerant condenser；
Fig. 5 is the structural schematic diagram of the Section A-A along Fig. 1；
Fig. 6 is the structural schematic diagram of a coolant channel in Fig. 5；
Fig. 7 is the partial structure diagram of the fin in Fig. 5；
1 is metal plate supporter in figure, 2 coolant channels, be 3 is straight tube, and 4 be connecting tube, 5 is entrance collector tube, 6 is
Mouth collector tube, 7 be cold bridge gap, and 8 be U-shaped connecting tube, and 9 be fin, and 10 be through-hole.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in further detail.
It should be noted that in following specific embodiments, when the embodiments of the present invention is described in detail, in order to
The structure of the utility model is clearly showed that in order to illustrate, spy does not draw to the structure in attached drawing according to general proportion, goes forward side by side
Gone partial enlargement, deformation and simplify processing, therefore, should be avoided in this, as the restriction to the utility model to understand.
Embodiment one
In following specific embodiment of the present utility model, Fig. 1~3 are please referred to.As shown, a kind of high pressure resistant gas
Cooler, including entrance collector tube, outlet collector tube, coolant channel and fin, between entrance collector tube and outlet collector tube
Equipped with multiple coolant channels independent of each other, each coolant channel is made of straight tube and U-shaped connecting tube, vertical straight tube direction
Multiple fins are arranged in parallel.The arrangement mode makes the flow direction of the coolant in the straight tube in every heat exchange row in cross-counterflow, increases
Heat exchange efficiency.Entry and exit collector tube plays the role of the distribution of heat exchanger inlet and outlet refrigerant, connecting tube and air conditioning pipe system phase
Even.
The utility model improves the material of entrance collector tube, outlet collector tube and coolant channel, preferably
Stainless steel material.In order to guarantee that stainless steel tube can adapt to the pressure of the 10MPa or more of CO2 air-conditioning, while ensuring heat exchange efficiency,
It is calculated by simulation, it is preferable that the pipe outside diameter range of straight tube is 4.8mm-5.2mm；The wall thickness of straight tube is 0.5mm-0.6mm.From
It is said in performance, the heating conduction of stainless steel tube is than the difference of copper pipe, but the tube wall of stainless steel tube is thin, comprehensively considers pipe two sides
Convective heat transfer resistance uses the thermal resistance of stainless steel tube heat exchanger its thermal resistance and copper pipe heat exchanger using Compressed CO_2 gas as refrigerant
There is no significant difference, but have apparent advantage using its weight of stainless steel tube heat exchanger and reliability, exchanges heat compared to ad eundem
The condenser of amount, total weight reduce by 15%, and burst pressure can accomplish 42Mpa, much higher than the pressure-bearing of copper tube and fin heat exchanger
Ability.It the use of the copper pipe gas cooler weight of ad eundem is at present 33kg, and the gas cooler of the utility model only weighs
28kg。
In order to avoid stainless steel material is got rusty, can be handled using electrophoretic process mode.
In order to improve heat exchange efficiency, with reference to Fig. 5 and Fig. 7, for the utility model using segmentation fin, fin centre is one reserved
Or multiple several millimeters of cold bridge gap, the direction in cold bridge gap is perpendicular to refrigerant flow direction.Cold bridge gap can cut off cold bridge, keep away
Exempting from the biggish temperature glide of refrigerant side influences the heat transfer effect of refrigerant flow downstream, and is capable of increasing refrigerant outlet
Degree of supercooling promotes the refrigeration performance of air-conditioning, can make the performance boost 5%-10% of gas cooler in this way.It is preferred that
Ground, the width in cold bridge gap are 2 millimeters~5 millimeters.
In order to further decrease the overall weight of gas cooler, it is preferable that the material of fin is also aluminum material, and through electricity
Swimming processing.Fin shape can be any fin of the prior art, such as can be vertical fins or corrugated fin.
Embodiment two
Different from embodiment one is, embodiment two is on the basis of example 1 using the single coolant channel of shortening
Operation length, the design method of quantity that increases coolant channel further increase heat exchange efficiency, reduce refrigerant gas
Process loss.There are two types of specific implementations.
First way is compared with reference to Fig. 5 with Fig. 4, and the quantity for the straight tube for including in each coolant channel in Fig. 5 subtracts
One times few, correspondingly, the quantity of coolant channel doubles, this kind of mode is mentioned in the case where guaranteeing that overall dimensions are constant
High heat exchange efficiency.
The second way is compared with Fig. 4, and the quantity for the straight tube for including in each coolant channel is constant, straight by shortening
The length of pipe shortens the operation length of single coolant channel, meanwhile, increase the quantity of coolant channel, i.e., by shortening gas
The width of cooler, and increase the mode of height of gas cooler and improve heat exchange efficiency under same volume.
In above two mode, the operation length optimization of single coolant channel shortens 40%~60%.In this way, refrigeration
The flow resistance of agent entirety can reduce 40%-50%, have active influence to the integrally cooling effect of air-conditioning system.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its inventive concept is subject to equivalent substitution or change, should all cover the protection scope of the utility model it
It is interior.
Claims (7)
1. a kind of high pressure resistant gas cooler, including entrance collector tube, outlet collector tube, coolant channel and fin, entrance collection
Multiple coolant channels independent of each other are equipped between liquid pipe and outlet collector tube, each coolant channel is connected by straight tube and U-shaped
Adapter tube is constituted, and multiple fins are arranged in parallel in vertical straight tube direction, which is characterized in that
Entrance collector tube, outlet collector tube and coolant channel are stainless steel material；The pipe outside diameter range of straight tube is 4.8mm-
5.2mm；The wall thickness of straight tube is 0.5mm-0.6mm；
One or more cold bridges gap is equipped in each fin, the direction in cold bridge gap is perpendicular to refrigerant flow direction.
2. high pressure resistant gas cooler according to claim 1, which is characterized in that the width in the cold bridge gap is 2mm
~5mm.
3. high pressure resistant gas cooler according to claim 1, which is characterized in that shorten the process of single coolant channel
Length increases the quantity of coolant channel.
4. high pressure resistant gas cooler according to claim 3, which is characterized in that the process of the single coolant channel
Length shortens 40%~60%.
5. high pressure resistant gas cooler according to claim 1, which is characterized in that the entrance collector tube, outlet liquid collecting
Pipe and coolant channel use electrophoretic process.
6. high pressure resistant gas cooler according to claim 1, which is characterized in that the fin is vertical fins or ripple
Fin.
7. high pressure resistant gas cooler according to claim 1, which is characterized in that the fin is aluminium material, and is used
Electrophoretic process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821896665.5U CN209116593U (en) | 2018-11-16 | 2018-11-16 | A kind of high pressure resistant gas cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821896665.5U CN209116593U (en) | 2018-11-16 | 2018-11-16 | A kind of high pressure resistant gas cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209116593U true CN209116593U (en) | 2019-07-16 |
Family
ID=67205532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821896665.5U Active CN209116593U (en) | 2018-11-16 | 2018-11-16 | A kind of high pressure resistant gas cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209116593U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323487A (en) * | 2018-11-16 | 2019-02-12 | 中车大连机车研究所有限公司 | A kind of high pressure resistant gas cooler |
| WO2020093490A1 (en) * | 2018-11-08 | 2020-05-14 | 中车大连机车研究所有限公司 | Gas cooler for co2 transcritical cycle air conditioner |
-
2018
- 2018-11-16 CN CN201821896665.5U patent/CN209116593U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020093490A1 (en) * | 2018-11-08 | 2020-05-14 | 中车大连机车研究所有限公司 | Gas cooler for co2 transcritical cycle air conditioner |
| CN109323487A (en) * | 2018-11-16 | 2019-02-12 | 中车大连机车研究所有限公司 | A kind of high pressure resistant gas cooler |
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