CN203231590U - Novel micro-channel heat exchanger - Google Patents
Novel micro-channel heat exchanger Download PDFInfo
- Publication number
- CN203231590U CN203231590U CN 201320183209 CN201320183209U CN203231590U CN 203231590 U CN203231590 U CN 203231590U CN 201320183209 CN201320183209 CN 201320183209 CN 201320183209 U CN201320183209 U CN 201320183209U CN 203231590 U CN203231590 U CN 203231590U
- Authority
- CN
- China
- Prior art keywords
- spiral plate
- heat exchanger
- plate heat
- header
- heat exchange
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000004080 punching Methods 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000003416 augmentation Effects 0.000 description 1
- 230000002457 bidirectional Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a novel micro-channel heat exchanger comprising an upper header, a spiral plate heat-exchanging inlet section, a lower header, a plurality of flat tubes arranged between the upper header and the lower header, and fins between adjacent flat tubes. The spiral plate heat-exchanging inlet section is arranged in the upper header. The cold fluid inlet pipeline of the spiral plate heat-exchanging inlet section is communicated with a device provided gas and liquid refrigerants inside. A plurality of punched holes are distributed in the cold fluid outlet pipeline of the spiral plate heat-exchanging inlet section. The cold fluid outlet pipeline is communicated with one end of every flat tube, and the other end of every flat tube is communicated with the lower header. The spiral plate heat-exchanging inlet section arranged in the upper header and micro-channels are overlaid to exchange heat, refrigerant flowing distance is lengthened, heat exchanging is complete, and accordingly the refrigerant flow entering the flat tubes is even and stable; the ratio of the liquid-refrigerant entering the micro-channels of each set of the flat tubes is relatively reasonable, and heat exchanging effect of the heat exchanger can be improved significantly.
Description
Technical field
The utility model relates to the heat exchanger technical field, particularly a kind of micro-channel heat exchanger of built-in spiral plate heat exchange entrance.
Background technology
Micro-channel heat exchanger is efficient with heat exchange property, the advantage of compact conformation, just progressively is applied to commerce, family expenses refrigerating and air conditioning industry, and relative research receives more and more concerns of industry, becomes a research focus in this field.
Use has obtained some progress to micro-channel heat exchanger as condenser in the Refrigeration ﹠ Air-Conditioning industry.But micro-channel evaporator because relate to the even shunting of gas-liquid two-phase and the heat pump operating mode under technical problems such as the eliminating large-scale popularization not as yet of defrosting water.When micro-channel heat exchanger used as evaporimeter, cold-producing medium is easy maldistribution in each heat exchanger tube, caused to occur " dry blowing " and " overfeeding " phenomenon between each heat exchanger tube.And the inhomogeneities that cold-producing medium distributes is very big to the performance impact of system, and flow distribution is inhomogeneous in the pipe will cause local frosting relatively more serious and be difficult for melting.Therefore, how making the flow that enters the cold-producing medium in the flat tube uniform and stable, and make the ratio of the liquid refrigerant in the microchannel that enters every group of flat tube relatively reasonable, is key issue to be solved in the utility model.
Discover that the factor that influences micro-channel heat exchanger is more, distributing pipe structural parameters, heat exchanger flat tube size, refrigerant inlet state etc. all can have influence on the uniformity that cold-producing medium distributes in the heat exchanger.Existing a large amount of patents is launched research around the flow distribution of refrigerant control of micro-channel heat exchanger.As Chinese patent ZL201110175979.2 " a kind of micro-channel heat exchanger ", be provided with inlet tube in lower header, carried out improvement by a small margin, so effect is faint.ZL200910002434.4 " loop structure of bidirectional microchannel heat exchanger ", this patent has all added dividing plate at separating tube and discharge inside, a lot of loop structures have been divided into, the heat exchange property of micro-channel heat exchanger increases along with the increase of flow process number, but when flow process acquired a certain degree, heat exchange property no longer improved.Meanwhile, the pressure drop meeting increases sharply along with the increase of flow process number.
Summary of the invention
The utility model is at the deficiencies in the prior art part, provide a kind of novel micro-channel heat exchanger: by being arranged on spiral plate heat exchange entrance in the header and the stack heat exchange of microchannel, the cold-producing medium flow process lengthens, heat exchange is abundant, thereby guaranteed that the refrigerant flow that enters in the flat tube is uniform and stable, and make the ratio of the liquid refrigerant in the microchannel that enters every group of flat tube relatively reasonable, the heat exchange effect of heat exchanger is significantly improved.
A kind of novel micro-channel heat exchanger of the utility model, it comprises header, spiral plate heat exchange entrance, lower header, be arranged on several flat tubes between header and the lower header and be arranged on fin between the adjacent flat tube; Described spiral plate heat exchange entrance is arranged in the header, the cold fluid entrance of spiral plate heat exchange entrance with in have the device of gas-liquid two-phase cold-producing medium to be connected, scatter a plurality of punching hole on the cold fluid outlet conduit of spiral plate heat exchange entrance, the cold fluid outlet conduit is communicated with an end of every flat tube respectively, and the other end of every flat tube is communicated with lower header.
When micro-channel heat exchanger during as evaporimeter, enter spiral plate heat exchange entrance through the gas-liquid two-phase cold-producing medium behind the expansion valve, after process spiral plate heat exchange entrance carried out pre-heat exchange, the punching hole injection from the cold fluid outlet conduit entered header, flows into each root flat tube then equably.Cold-producing medium evaporation heat absorption, cooling tube is the higher air of temperature outward, reaches the effect of refrigeration, and cold-producing medium is by the lower header outflow heat exchanger subsequently.
The utility model has following some beneficial effect with respect to prior art:
1. by the stack heat exchange of spiral plate heat exchange entrance and microchannel, the cold-producing medium flow process lengthens, and heat exchange is abundant, the flow that has guaranteed to enter the cold-producing medium in the flat tube is uniform and stable, the heat exchange efficiency of heat exchanger is significantly improved, thereby improve the air-conditioning system Energy Efficiency Ratio, satisfy the requirement of energy-saving and emission-reduction.
2. because the gas-liquid two-phase cold-producing medium has carried out pre-heat exchange in preposition spiral plate heat exchange entrance, thereby make the ratio of the liquid refrigerant in the microchannel that enters every group of flat tube relatively reasonable, optimize the heat exchange effect widely, leaving air temp is evenly distributed, improved amenity.
3. this novel micro-channel heat exchanger can be strengthened intraductal heat transfer, makes heat exchanger compactness, efficient, and refrigerant charge reduces, and is conducive to environmental protection when reducing the heat exchanger cost.
Description of drawings
Fig. 1 is the utility model micro-channel heat exchanger structure chart.
Fig. 2 is spiral plate heat exchange entrance structure chart.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, this novel micro-channel heat exchanger comprises header 1, spiral plate heat exchange entrance 2, cold fluid entrance 21, cold fluid outlet 22, punching hole 221, lower header 3, flat tube 4, fin 5.
Described flat tube 4 has some to be arranged between header 1 and the lower header 2, and described fin 5 is arranged between the adjacent flat tube 4.Be provided with spiral plate heat exchange entrance 2 in the last header 1, the cold fluid entrance 21 of spiral plate heat exchange entrance 2 with in have the device of gas-liquid two-phase cold-producing medium to be connected, the cold fluid of spiral plate heat exchange entrance 2 exports 22 pipelines and scatter a plurality of punching hole 221 thereon after suitably lengthening, and be communicated with an end of every flat tube 4 respectively, the other end of every flat tube 4 is connected with lower header 3.
When micro-channel heat exchanger during as evaporimeter, refrigerant flow direction is shown in solid arrow among the figure.Enter spiral plate heat exchange entrance 2 through the gas-liquid two-phase cold-producing medium behind the expansion valve, after process spiral plate heat exchange entrance 2 carried out pre-heat exchange, the punching hole injection that exports on 22 pipelines from cold fluid entered header 1, flows into each root flat tube 4 then equably.In flat tube 4, cold-producing medium evaporation heat absorption, the outer higher air of temperature of cooling tube reaches refrigeration, fin 5 augmentation of heat transfers.Cold-producing medium is by lower header 3 outflow heat exchangers subsequently.
A kind of micro-channel heat exchanger of the utility model can be realized the even separatory of cold-producing medium, effectively improves heat exchange property, has good application prospects.
Claims (1)
1. novel micro-channel heat exchanger, it is characterized in that described micro-channel heat exchanger comprises header, spiral plate heat exchange entrance, lower header, be arranged on several flat tubes between header and the lower header and be arranged on fin between the adjacent flat tube; Described spiral plate heat exchange entrance is arranged in the header, the cold fluid entrance of spiral plate heat exchange entrance with in have the device of gas-liquid two-phase cold-producing medium to be connected, scatter a plurality of punching hole on the cold fluid outlet conduit of spiral plate heat exchange entrance, the cold fluid outlet conduit is communicated with an end of every flat tube respectively, and the other end of every flat tube is communicated with lower header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320183209 CN203231590U (en) | 2013-04-12 | 2013-04-12 | Novel micro-channel heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320183209 CN203231590U (en) | 2013-04-12 | 2013-04-12 | Novel micro-channel heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203231590U true CN203231590U (en) | 2013-10-09 |
Family
ID=49287713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320183209 Expired - Fee Related CN203231590U (en) | 2013-04-12 | 2013-04-12 | Novel micro-channel heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203231590U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299963A (en) * | 2015-11-30 | 2016-02-03 | 惠州学院 | Parallel flow heat exchanger |
| CN108712852A (en) * | 2018-07-12 | 2018-10-26 | 厦门大学 | A kind of microchannel heat sink of gas-liquid two-phase mixing jetting |
-
2013
- 2013-04-12 CN CN 201320183209 patent/CN203231590U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299963A (en) * | 2015-11-30 | 2016-02-03 | 惠州学院 | Parallel flow heat exchanger |
| CN108712852A (en) * | 2018-07-12 | 2018-10-26 | 厦门大学 | A kind of microchannel heat sink of gas-liquid two-phase mixing jetting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20160412 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |