CN201589465U

CN201589465U - Variable-channel mixed flow heat exchanger

Info

Publication number: CN201589465U
Application number: CN2009202958486U
Authority: CN
Inventors: 贾庆贤; 杨九铭; 张智; 赵夫峰; 间昭顺
Original assignee: Guangdong Midea Electric Appliances Co Ltd
Current assignee: Guangdong Midea Group Wuhu Air Conditioning Equipment Co Ltd
Priority date: 2009-12-26
Filing date: 2009-12-26
Publication date: 2010-09-22
Anticipated expiration: 2019-12-26

Abstract

A variable-channel mixed flow heat exchanger comprises a refrigerant pipe and a fin tightly sleeved outside the refrigerant pipe. A long U pipe or a U-shaped elbow of the refrigerant pipe is slantingly inserted into the fin; a flow path on one side of the long U pipe or the U-shaped elbow is divided into more than one section; a first racking pipe arranged on the uppermost surface of the leeward side of each section of the flow path is an inlet pipe communicated with a first flute-shaped pipe; the last racking pipe arranged on the lowermost surface of the windward side of each section of the flow path is an outlet pipe communicated with a second flute-shaped pipe; refrigerants flow into the inlet pipe from the first flute-shaped pipe and finally flow to the second flute-shaped pipe from the outlet pipe; a flow path on the other side of the long U pipe or the U-shaped elbow is divided into more than two sections; and the second flute-shaped pipe inside the former flow path is communicated with a first flute-shaped pipe inside a latter flow path. The variable-channel mixed flow heat exchanger has the advantages of simple and reasonable structure, and capabilities of effectively reducing pressure drop on the inner side of the refrigerant pipe and making full use of the heat exchange performance of each portion of the heat exchanger, thereby improving overall heat exchange efficiency of the heat exchanger and having wide applicable scope.

Description

A kind of flexible road mixed-flow heat exchanger

Technical field

The utility model relates to a kind of heat exchanger, particularly a kind of flexible road mixed-flow heat exchanger.

Background technology

In recent years, along with the fierceness of the competition in air-conditioning market and the raising of national standard, the energy-conservation requirement of air-conditioner more and more comes into one's own.Two rows and the above fin-tube type heat exchanger of two rows are heat exchanger structures the most frequently used in the air-conditioning, and the long U of traditional heat exchanger manages common employing and directly is inserted into every row's heat exchanger, perhaps has only several oblique cuttings that carry out according to the stream needs; In order to reduce the inboard pressure drop of pipe, adopt a plurality of streams usually.This heat exchanger causes each stream refrigerant flow inequality because stream too much adopts current divider usually easily, each part heat exchange of heat exchanger is differed greatly, and then make the heat exchange property of heat exchanger integral body not high relatively.

The utility model content

The purpose of this utility model aim to provide a kind of simple and reasonable, can effectively reduce the inboard pressure drop of refrigerant pipe, give full play to the heat exchange property of the every part of heat exchanger, thereby improve the whole heat exchange efficiency of heat exchanger, flexible road mixed-flow heat exchanger applied widely, to overcome weak point of the prior art.

A kind of flexible road mixed-flow heat exchanger by this purpose design, comprise refrigerant pipe and tightly be enclosed within the outer fin of refrigerant pipe, its architectural feature is that the long U pipe of refrigerant pipe or return bend oblique cutting are in fin, the flow process of long U pipe or return bend opposite side is divided into more than one section, every section interior uppermost first comb of leeward side of flow process is an inlet pipe, inlet pipe communicates with first bourdon's tube, and nethermost last comb of windward side in every section flow process goes out pipe and communicates with second bourdon's tube for going out pipe; Cold-producing medium flows to inlet pipe from first bourdon's tube, flows to second bourdon's tube from going out pipe at last.

The flow process of described long U pipe or return bend opposite side is divided into more than two sections, and first bourdon's tube in second bourdon's tube in the last flow process and back one flow process communicates.

The cross section of described refrigerant pipe is circle, ellipse or flat tube shape.

The cross section of described refrigerant pipe is circular, and its opening diameter is 4mm, 5mm, 6mm, 6.35mm, 7mm, 7.94mm or 9.52mm.

The utility model adopts flexible road series parallel type mode, effectively reduce the inboard pressure drop of refrigerant pipe, solution too much causes the uneven problem of each stream heat exchange of heat exchanger because of stream, give full play to the heat exchange property of the every part of heat exchanger, thereby has higher heat exchange efficiency, can effectively reduce the cost of product, improve competitiveness of product.According to concrete designing requirement, the caliber of the refrigerant pipe in same flow process or the different flow process both can be identical, also can be inequality; The cross section of its pipe both can be identical, also can be inequality; The sheet of every row's fin is wide both can be identical, also can be inequality, and it has bigger flexibility and stronger adaptive capacity.

The utility model can be widely used on the condenser and evaporimeter of various air-conditioners.

Description of drawings

Fig. 1 is the main TV structure schematic diagram of the utility model first embodiment.

Fig. 2 is the left TV structure schematic diagram of Fig. 1.

Fig. 3 is the right TV structure schematic diagram of Fig. 1.

Fig. 4 is the structural representation of the utility model second embodiment.

Fig. 5 is the left TV structure schematic diagram of Fig. 4.

Fig. 6 is the right TV structure schematic diagram of Fig. 4.

Among the figure: 1 is refrigerant pipe, and 1.1 is first comb, and 1.2 is last comb, and 2 is fin, and 3.1 is first bourdon's tube, and 3.2 is second bourdon's tube, and dotted arrow is represented the flow direction of cold-producing medium, and solid arrow is represented airflow direction.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described.

First embodiment

Referring to Fig. 1-Fig. 3, this flexible road mixed-flow heat exchanger comprises that refrigerant pipe 1 reaches the fin 2 that tightly is enclosed within outside the refrigerant pipe 1, and the long U pipe of refrigerant pipe or return bend oblique cutting are in fin.

When refrigerant pipe adopts the direct bending and forming of straight tube, just be long U pipe; When refrigerant pipe is two straight tubes, connect in the end of these two straight tubes with regard to adopting return bend.

When the flow process of long U pipe or return bend opposite side is one section, every section interior uppermost first comb 1.1 of leeward side of flow process is an inlet pipe, inlet pipe communicates with first bourdon's tube 3.1, and nethermost last comb 1.2 of windward side in every section flow process goes out pipe and communicates with second bourdon's tube 3.2 for going out pipe; Cold-producing medium flows to inlet pipe from first bourdon's tube 3.1, flows to second bourdon's tube 3.2 from going out pipe at last.

When the flow process of long U pipe or return bend opposite side was two sections, first bourdon's tube in second bourdon's tube in the last flow process and back one flow process communicated.The cold-producing medium of the last flow process second interior bourdon's tube of a flow process in the past flows in first bourdon's tube of back one flow process, then flow to the inlet pipe of back one flow process, at last from second bourdon's tube 3.2 that pipe flows to back one flow process that goes out of back one flow process from first bourdon's tube 3.1 of back one flow process.

The cross section of refrigerant pipe 1 is circle, ellipse or flat tube shape; Its cast can be identical, also can be the combination of different casts.The cross section that has only provided refrigerant pipe 1 among the figure is circular structure.

When the cross section of refrigerant pipe 1 is circular, its opening diameter is 4mm, 5mm, 6mm, 6.35mm, 7mm, 7.94mm or 9.52mm; Its caliber can be identical, also can be the different tube diameters combination.

Be that caliber is identical in this example.The sheet of every row's fin is wide can be identical, also can be inequality.Be that sheet is wide identical in this example.

Present embodiment adopts the structure of 2 row refrigerant pipes, and flow process wherein is divided into 4 sections, can adjust accordingly performance heat exchanger optimum performance in actual applications according to demand.

Second embodiment

Referring to Fig. 4-Fig. 6, present embodiment adopts the structure of 4 row refrigerant pipes.

All the other are not stated part and see first embodiment, no longer repeat.

Claims

1. flexible road mixed-flow heat exchanger, comprise refrigerant pipe (1) and tightly be enclosed within the outer fin (2) of refrigerant pipe, it is characterized in that the long U pipe of refrigerant pipe or return bend oblique cutting are in fin, the flow process of long U pipe or return bend opposite side is divided into more than one section, every section interior uppermost first comb of leeward side (1.1) of flow process is an inlet pipe, inlet pipe communicates with first bourdon's tube (3.1), nethermost last comb of windward side (1.2) in every section flow process goes out pipe and communicates with second bourdon's tube (3.2) for going out pipe; Cold-producing medium flows to inlet pipe from first bourdon's tube, flows to second bourdon's tube from going out pipe at last.

2. flexible road according to claim 1 mixed-flow heat exchanger is characterized in that the flow process of described long U pipe or return bend opposite side is divided into more than two sections, and first bourdon's tube in second bourdon's tube in the last flow process and back one flow process communicates.

3. flexible road according to claim 1 mixed-flow heat exchanger is characterized in that the cross section of described refrigerant pipe (1) is circle, ellipse or flat tube shape.

4. flexible road according to claim 1 mixed-flow heat exchanger, the cross section that it is characterized in that described refrigerant pipe (1) is for circular, and its opening diameter is 4mm, 5mm, 6mm, 6.35mm, 7mm, 7.94mm or 9.52mm.