CN203857713U

CN203857713U - Heat exchanger and air conditioner

Info

Publication number: CN203857713U
Application number: CN201420212874.9U
Authority: CN
Inventors: 江悄悄
Original assignee: Guangdong Midea Group Wuhu Air Conditioning Equipment Co Ltd
Current assignee: Guangdong Midea Group Wuhu Air Conditioning Equipment Co Ltd
Priority date: 2014-04-28
Filing date: 2014-04-28
Publication date: 2014-10-01
Anticipated expiration: 2024-04-28

Abstract

The utility model discloses a heat exchanger which comprises at least three rows of U-shaped pipes. The pipe diameters of the at least three rows of U-shaped pipes are different and sequentially increase in the flowing direction of refrigerants. Compared with a traditional evaporator, the heat exchanger can better adapt to changes of density and pressure in the evaporating process of the refrigerants, the refrigerants can be in a state with a high heat exchange coefficient whether in a liquid state or a gas state, flowing resistance can be effectively lowered, and heat exchange capacity and energy efficiency of the air conditioner are improved.

Description

Heat exchanger and air-conditioner

Technical field

The utility model relates to air-conditioning technical field, relates in particular to a kind of heat exchanger and air-conditioner.

Background technology

At present, in conventional Fin and tube evaporator, mostly adopt the long U pipe that caliber is identical.But, in the evaporimeter of this structure, because cold-producing medium density in evaporimeter heat absorption evaporation process increases gradually, the pressure loss increases, cannot ensure that cold-producing medium is all in uniform rate of circulating flow state in the time of gaseous state and liquid state, and then affect the exchange capability of heat of evaporimeter, increased the flow resistance in flow of refrigerant process simultaneously.

Utility model content

Main purpose of the present utility model is to provide the flow resistance of a kind of effective reduction cold-producing medium in flow process, improves heat exchanger and the air-conditioner of exchange capability of heat and air-conditioning efficiency.

In order to achieve the above object, the utility model proposes a kind of heat exchanger, comprising: the U-shaped pipe of at least three rows, the caliber difference between the U-shaped pipe of described at least three row.

Preferably, described heat exchanger is evaporimeter, and along the flow direction of cold-producing medium, the caliber of respectively arranging U-shaped pipe increases successively.

Preferably, described heat exchanger comprises that U1, U2, U3 tri-arrange U-shaped pipe, and along the flow direction of cold-producing medium, the caliber of the U-shaped pipe of described three row is respectively Φ 7, Φ 7.94, Φ 9.52.

Preferably, described heat exchanger also comprises input pipe, distributor and discharge, and described input pipe connects U1 pipe through distributor, by distributor, cold-producing medium is divided into some branch roads, and the cold-producing medium of each branch road is successively by corresponding U1, U2, U3 pipe; The outlet of each branch road is connected to described discharge by U3 pipe.

Preferably, for each branch road, respectively arrange between U-shaped pipe and connect by short U pipe.

Preferably, respectively arrange spacing between U-shaped pipe identical.

The utility model also proposes a kind of air-conditioner, comprises heat exchanger as above.

A kind of heat exchanger and the air-conditioner that the utility model proposes, comprise: the U-shaped pipe of at least three rows, caliber difference between the U-shaped pipe of described at least three row, compare conventional evaporator, can better adapt to cold-producing medium density in evaporation process changes and pressure variation, ensure that no matter cold-producing medium is can be in a state that the coefficient of heat transfer is high in the time of liquid state or gaseous state, and can effectively reduce flow resistance, thereby improve the exchange capability of heat of evaporimeter and the efficiency of air-conditioning.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model heat exchanger preferred embodiment;

Fig. 2 is the caliber contrast schematic diagram of the U-shaped pipe of three rows of the utility model heat exchanger.

In order to make the technical solution of the utility model clearer, clear, be described in further detail below in conjunction with accompanying drawing.

Detailed description of the invention

Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.

As shown in Figure 1, the utility model preferred embodiment proposes a kind of heat exchanger, especially refer to evaporimeter, this heat exchanger comprises: heat exchanger body 14, input pipe 11, distributor 12 and discharge 13, cold-producing medium is entered by input pipe 11, through distributor 12, cold-producing medium is divided into some branch roads and enters heat exchanger body 14, each branch road gathers to discharge 13 and exports afterwards.

In the present embodiment, heat exchanger body 14 is made up of the fin of growing U-shaped pipe and be enclosed within on U-shaped pipe, comprises the U-shaped pipe of at least three rows in heat exchanger body 14, the caliber difference between the U-shaped pipe of described at least three row.Be used in combination by the U-shaped pipe of different tube diameters thus, and ensure that each evaporation flow process is all more than three long U-shaped pipe, compare conventional evaporator, can better adapt to cold-producing medium density in evaporation process changes and pressure variation, ensure no matter cold-producing medium is can be in a state that the coefficient of heat transfer is higher in the time of liquid state or gaseous state, and can effectively reduce flow resistance, thereby improve the exchange capability of heat of evaporimeter and the efficiency of air-conditioning.

Particularly, in the present embodiment, each U-shaped pipe can adopt copper pipe.

As a kind of embodiment, along the flow direction of cold-producing medium, from the inner side of heat exchanger to outside, the caliber of respectively arranging U-shaped pipe increases successively.

The present embodiment is arranged U-shaped pipe and is given an example with U1, U2, U3 tri-, and wherein, U1 is positioned at the input side of cold-producing medium, i.e. the U-shaped pipe of row in heat exchanger, and U3 is positioned at the outlet side of cold-producing medium, and heat exchanger outermost is arranged U-shaped pipe, and U2 pipe is between U1 pipe and U3 pipe.Input pipe 11 connects U1 pipe through distributor 12, cold-producing medium enters from input pipe 11, be divided into some branch roads (1in, 2in by distributor 12 ... n in) enter vaporizer body heat absorption evaporation, the cold-producing medium of each branch road is successively by corresponding U1, U2, U3 pipe; Outlet (1out, the 2out of last each branch road ... n out) be aggregated into discharge 13 by U3 pipe and export (OUT), flow out evaporimeter, finish evaporation process.

For each branch road, respectively arrange between U-shaped pipe and connect by short U pipe.As a kind of embodiment, the spacing of respectively arranging between U-shaped pipe can be identical.

As shown in Figure 2, as a kind of preferred version, the caliber that the U1 of heat exchanger, U2, U3 tri-arrange U-shaped pipe is respectively Φ 7, Φ 7.94, Φ 9.52.Copper pipe by three kinds of different tube diameters is used in combination, and ensure that each evaporation flow process is all three long U-shaped pipes, cold-producing medium is successively by Φ 7, Φ 7.94, Φ 9.52, so compare conventional evaporator, can better adapt to cold-producing medium density in evaporation process changes and pressure variation, ensure that no matter cold-producing medium is can be in a state that the coefficient of heat transfer is high in the time of liquid state or gaseous state, and can effectively reduce flow resistance, thereby improve the exchange capability of heat of evaporimeter and the efficiency of air-conditioning.

The present embodiment heat exchanger is especially applicable to using air-cooled ducted air conditioner, seat at light-duty commercial platform to hang dual-purpose indoor set, embedded indoor unit of air conditioner etc.

In addition, the utility model also proposes a kind of air-conditioner, comprises heat exchanger as above, and its design feature please refer to above-described embodiment, does not repeat them here.

The utility model embodiment heat exchanger and air-conditioner, adopt the U-shaped pipe of at least three row's different tube diameters, and along the flow direction of cold-producing medium, the caliber of the U-shaped pipe of each row increases successively, compare conventional evaporator, can better adapt to cold-producing medium density in evaporation process and change and pressure variation, ensure no matter cold-producing medium is can be in a state that the coefficient of heat transfer is high in the time of liquid state or gaseous state, and can effectively reduce flow resistance, thereby improve the exchange capability of heat of evaporimeter and the efficiency of air-conditioning.

Above are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or flow process conversion that utilizes the utility model description and accompanying drawing content to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. a heat exchanger, is characterized in that, comprising: the U-shaped pipe of at least three rows, the caliber difference between the U-shaped pipe of described at least three row.

2. heat exchanger according to claim 1, is characterized in that, described heat exchanger is evaporimeter, and along the flow direction of cold-producing medium, the caliber of respectively arranging U-shaped pipe increases successively.

3. heat exchanger according to claim 1 and 2, is characterized in that, described heat exchanger comprises that U1, U2, U3 tri-arrange U-shaped pipe, and along the flow direction of cold-producing medium, the caliber of the U-shaped pipe of described three row is respectively Φ 7, Φ 7.94, Φ 9.52.

4. heat exchanger according to claim 3, it is characterized in that, described heat exchanger also comprises input pipe, distributor and discharge, and described input pipe connects U1 pipe through distributor, by distributor, cold-producing medium is divided into some branch roads, the cold-producing medium of each branch road is successively by corresponding U1, U2, U3 pipe; The outlet of each branch road is connected to described discharge by U3 pipe.

5. heat exchanger according to claim 4, is characterized in that, for each branch road, respectively arranges between U-shaped pipe and connects by short U pipe.

6. heat exchanger according to claim 4, is characterized in that, respectively arranges spacing between U-shaped pipe identical.

7. an air-conditioner, is characterized in that, comprising: the heat exchanger in claim 1-6 described in any one.