CN203249530U - Microchannel flat tube and heat exchanger with same - Google Patents

Microchannel flat tube and heat exchanger with same Download PDF

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Publication number
CN203249530U
CN203249530U CN 201320138141 CN201320138141U CN203249530U CN 203249530 U CN203249530 U CN 203249530U CN 201320138141 CN201320138141 CN 201320138141 CN 201320138141 U CN201320138141 U CN 201320138141U CN 203249530 U CN203249530 U CN 203249530U
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China
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flat
flat tube
tube
micro
channel
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CN 201320138141
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Chinese (zh)
Inventor
汪峰
何国平
张亚春
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Zhejiang Dunan Thermal Technology Co Ltd
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Zhejiang Dunan Thermal Technology Co Ltd
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Priority to CN 201320138141 priority Critical patent/CN203249530U/en
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Abstract

The utility model discloses a microchannel flat tube and a heat exchanger with the same. The microchannel flat tube comprises a flat tube body, wherein a hollow expanding tube channel is formed in the center of the flat tube body, and a plurality of refrigerant microchannel holes distributed axially are formed in the tube wall of the flat tube body. According to the microchannel flat tube and the heat exchanger with the same, due to the fact that at least one ventilating port is axially formed in the tube wall of the flat tube body, and due to the fact that the expanding tube channel of the hollow portion of the flat tube is communicated with the outside world through the ventilating port, air enters the expanding tube channel of the hollow portion from the ventilating port in the air inlet side, and flows out from the ventilating port in the leeward side after heat exchange is carried out with the inner surface of the flat tube, therefore, the area of heat exchange is enlarged, heat exchange effects are also enhanced, the heat exchanger is made to be high in heat exchange factor, and water drainage and frost removing are also facilitated.

Description

A kind of micro-channel flat and have the heat exchanger of this flat tube
Technical field
The utility model relates to a kind of micro-channel flat and uses the heat exchanger of this flat tube.
Background technology
Existing air cooling heat exchanger product, mainly contain two kinds of micro-channel parallel flow heat exchanger and copper pipe fin type heat exchangers, micro-channel heat exchanger is full aluminium heater, has efficient high, and is lightweight, the coolant injection amount is few, the advantages such as compact conformation, but because this structure drainage is difficult, exist a heat pamp short when being used for heat pump, long problem of defrost time fails to solve, and is therefore not yet universal.For example as evaporimeter or heat pump, when the heat exchanger height dimension very little, and lengthwise dimension is when very large, parallel-flow heat exchanger has to adopt the mode of flat tube horizontal positioned, because flat tube is horizontally disposed, condensed water can't in time be discharged, produce the frosting problem, cause heat exchange property significantly to be decayed.Although and copper pipe fin type defrost problem is little, the copper pipe material price is high, density is large, so that the shortcoming such as copper pipe fin type heat exchanger is compared parallel-flow heat exchanger and had again that cost is high, weight is large and the refrigerant side coefficient of heat transfer is low.
In the number of patent application fin that to be 201010250407.1 application for a patent for invention use micro-channel flat Inserting Tube plate heat interchanger, although can solve the fin drainage problem, but because flat tube thinner thickness, and flat tube has a plurality of microchannels aperture, so that flat tube be difficult to insert in the fin, unless the flat pipe hole size on the fin is strengthened, make the gap between it and the flat tube larger, but this technical scheme can affect again the welding of flat tube and fin, increases thermal resistance.Therefore the method is implemented difficulty.
The utility model content
Technical problem to be solved in the utility model just provides a kind of micro-channel flat, makes heat exchanger not only have the efficient coefficient of heat transfer but also be beneficial to draining and defrosting.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of micro-channel flat, comprise the flat tube body, it is characterized in that: described flat tube body center is the expand tube passage of hollow, offers several axially holes, cold-producing medium microchannel of trend in the tube wall of described flat tube body.
Preferably, described flat tube body tube wall is provided with the ventilating opening that at least one radially moves towards vertically, and described ventilating opening makes the expand tube passage be communicated with the flat tube body exterior.
Preferably, the same radial section at the flat tube body is provided with two ventilating openings.
Preferably, two of the same radial section of flat tube body ventilating openings are symmetricly set on flat tube body width two ends.
Preferably, two of the same radial section of flat tube body ventilating openings are crisscross arranged in flat tube body thickness direction both sides.
Preferably, two of the same radial section of flat tube body ventilating openings are arranged on flat tube body thickness direction one side simultaneously.
Preferably, the width of described flat tube body is L, and thickness is W, 0.1≤W/L≤1.
Preferably, the hydraulic diameter scope in hole, described single microchannel is between 0.4mm to 2mm.
Preferably, outer contour shape is comprised of the straight line of flat tube body thickness direction both sides and the arc-shaped edges of flat tube body width both sides on the described flat tube body radial section.
In addition, the utility model provides a kind of heat exchanger, and micro-channel flat is wherein used above-mentioned micro-channel flat.
The utility model is owing to being provided with vertically at least two ventilating openings on the tube wall of flat tube body, so that the expand tube passage of flat tube hollow space communicates with the external world by ventilating opening, wind enters the expand tube passage of hollow space from the inlet side ventilating opening, carry out flowing out from the leeward side ventilating opening after the heat exchange with the flat tube inner surface, therefore improved heat exchange area, also strengthened heat transfer effect, made heat exchanger not only have the efficient coefficient of heat transfer but also be beneficial to draining and defrosting.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Fig. 1 is the micro-channel flat perspective view of embodiment 1;
Fig. 2 is the micro-channel flat planar structure schematic diagram of embodiment 1;
Fig. 3 is the B-B cross-sectional view among Fig. 2;
Fig. 4 is the micro-channel flat perspective view of embodiment 2;
Fig. 5 is the micro-channel flat planar structure schematic diagram of embodiment 2;
Fig. 6 is the B-B cross-sectional view among Fig. 5;
Fig. 7 is micro-channel flat ventilating opening place cross-sectional view among the embodiment 3;
Fig. 8 is the flat tube body radial section schematic diagram of embodiment 4;
Fig. 9 is the flat tube body radial section schematic diagram of embodiment 5;
Figure 10 is for using the micro-channel heat exchanger planar structure schematic diagram of this flat tube;
Figure 11 is the A-A cross-sectional view among Figure 10;
Figure 12 is the syndeton schematic diagram (Figure 10 circled) of micro-channel flat and header.
The specific embodiment
Fig. 1 to Fig. 9 shows micro-channel flat 1 of the present utility model, this micro-channel flat 1 comprises flat tube body 10, described flat tube body 10 centers are the expand tube passage 11 of hollow, offer several axially holes, cold-producing medium microchannel 12 of trend in the tube wall of described flat tube body 10.Described flat tube body 10 tube walls are provided with at least one ventilating opening that radially moves towards 13 vertically, and described ventilating opening 13 makes expand tube passage 11 and 10 outside connections of flat tube body.The width of described flat tube body 10 is L, and thickness is W, 0.1≤W/L≤1, and the hydraulic diameter scope in hole, single microchannel 12 is between 0.4mm to 2mm.Same radial section at flat tube body 10 is provided with two ventilating openings 13.
Specify embodiment 1 of the present utility model below in conjunction with Fig. 1 to Fig. 3, two ventilating openings 13 of flat tube body 10 same radial sections wherein are symmetricly set on flat tube body 10 width two ends.
Specify embodiment 2 of the present utility model below in conjunction with Fig. 4 to Fig. 6, be from the different of embodiment 1, two ventilating openings 13 of flat tube body 10 same radial sections wherein are crisscross arranged in flat tube body 10 thickness direction both sides.
Specify embodiment 3 of the present utility model below in conjunction with Fig. 7, be from the different of embodiment 1, two ventilating openings 13 of flat tube body 10 same radial sections wherein are arranged on flat tube body 10 thickness directions one side simultaneously.
In above-described embodiment on the flat tube body radial section outer contour shape be oval.
Specify embodiment 4 of the present utility model below in conjunction with Fig. 8, wherein outer contour shape is comprised of the straight line of flat tube body thickness direction both sides and the arc-shaped edges of flat tube body width both sides on flat tube body 10 radial sections, and two straight lines are parallel to each other.
Specify embodiment 5 of the present utility model below in conjunction with Fig. 9, it is from the different of embodiment 4, two straight lines of outer contour shape and non-parallel on flat tube body 10 radial sections, but a minute fork is the splayed setting.
Outer contour shape is taked the structure in embodiment 4 and 5 on flat tube body 10 radial sections, and one can. and reduce windage, its two contact area that can increase wind and flat tube reduces the dead band.
To heat exchanger shown in Figure 12, it uses is the micro-channel flat in above-described embodiment such as Figure 10, and the two ends of micro-channel flat 1 are separately positioned in the first header 2, the second header 3, and micro-channel flat 1 is provided with the fin 20 with shutter between any two.Cold-producing medium flows to the second header 3 of the other end through the hole, cold-producing medium microchannel 12 of micro-channel flat 1 from the first header 2 of an end, because the expand tube passage 11 of flat tube hollow space communicates with the external world by ventilating opening 13, wind enters the expand tube passage 11 of the part of hollow from the inlet side ventilating opening, carry out flowing out from the leeward side ventilating opening after the heat exchange with the flat tube inner surface.

Claims (10)

1. micro-channel flat, comprise flat tube body (10), it is characterized in that: described flat tube body (10) center is the expand tube passage (11) of hollow, offers several axially holes, cold-producing medium microchannel (12) of trend in the tube wall of described flat tube body (10).
2. a kind of micro-channel flat according to claim 1, it is characterized in that: described flat tube body (10) tube wall is provided with at least one ventilating opening that radially moves towards (13) vertically, and described ventilating opening (13) is communicated with expand tube passage (11) and flat tube body (10) outside.
3. a kind of micro-channel flat according to claim 2, it is characterized in that: the same radial section at flat tube body (10) is provided with two ventilating openings (13).
4. a kind of micro-channel flat according to claim 3, it is characterized in that: two ventilating openings (13) of the same radial section of flat tube body (10) are symmetricly set on flat tube body (10) width two ends.
5. a kind of micro-channel flat according to claim 3, it is characterized in that: two ventilating openings (13) of the same radial section of flat tube body (10) are crisscross arranged in flat tube body (10) thickness direction both sides.
6. a kind of micro-channel flat according to claim 3, it is characterized in that: two ventilating openings (13) of the same radial section of flat tube body (10) are arranged on flat tube body (10) thickness direction one side simultaneously.
7. a kind of micro-channel flat according to claim 1, it is characterized in that: the width of described flat tube body (10) is L, thickness is W, 0.1≤W/L≤1.
8. a kind of micro-channel flat according to claim 1, it is characterized in that: the hydraulic diameter scope in hole, described single microchannel (12) is between 0.4mm to 2mm.
9. a kind of micro-channel flat according to claim 1, it is characterized in that: outer contour shape is comprised of the straight line of flat tube body thickness direction both sides and the arc-shaped edges of flat tube body width both sides on the described flat tube body radial section.
10. a heat exchanger comprises micro-channel flat (1), it is characterized in that: described micro-channel flat right to use requires the micro-channel flat in 1 to 9.
CN 201320138141 2013-03-25 2013-03-25 Microchannel flat tube and heat exchanger with same Active CN203249530U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320138141 CN203249530U (en) 2013-03-25 2013-03-25 Microchannel flat tube and heat exchanger with same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320138141 CN203249530U (en) 2013-03-25 2013-03-25 Microchannel flat tube and heat exchanger with same

Publications (1)

Publication Number Publication Date
CN203249530U true CN203249530U (en) 2013-10-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104949395A (en) * 2014-03-28 2015-09-30 浙江盾安人工环境股份有限公司 Heat pump type microchannel heat exchanger
CN105091413A (en) * 2014-05-06 2015-11-25 美的集团股份有限公司 Heat exchanger
CN105865225A (en) * 2016-04-01 2016-08-17 海信(山东)空调有限公司 Microchannel heat exchanger and air conditioner
CN106705498A (en) * 2015-08-05 2017-05-24 丹佛斯微通道换热器(嘉兴)有限公司 Heat exchanger

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104949395A (en) * 2014-03-28 2015-09-30 浙江盾安人工环境股份有限公司 Heat pump type microchannel heat exchanger
CN105091413A (en) * 2014-05-06 2015-11-25 美的集团股份有限公司 Heat exchanger
CN105091413B (en) * 2014-05-06 2017-10-13 美的集团股份有限公司 Heat exchanger
CN106705498A (en) * 2015-08-05 2017-05-24 丹佛斯微通道换热器(嘉兴)有限公司 Heat exchanger
CN106705498B (en) * 2015-08-05 2019-04-09 丹佛斯微通道换热器(嘉兴)有限公司 Heat exchanger
CN105865225A (en) * 2016-04-01 2016-08-17 海信(山东)空调有限公司 Microchannel heat exchanger and air conditioner
CN105865225B (en) * 2016-04-01 2018-03-30 海信(山东)空调有限公司 A kind of micro-channel heat exchanger and air conditioner

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