CN201104053Y

CN201104053Y - Pipe fin type reducing heat exchanger and outdoor unit of air-conditioner equipped with the same

Info

Publication number: CN201104053Y
Application number: CNU2007200300641U
Authority: CN
Inventors: 康月; 杜顺祥; 高思云
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Shandong Air Conditioning Co Ltd
Priority date: 2007-10-30
Filing date: 2007-10-30
Publication date: 2008-08-20
Anticipated expiration: 2017-10-30

Abstract

The utility model provides a finned tube type reducing heat exchanger and an outdoor unit of an air conditioner provided with the heat exchanger. The utility model solves the problems of the prior art of low heat exchanging efficiency and low ability to exchange heat. The technical proposal of the utility model is as follows: the finned tube type reducing heat exchanger comprises an inside drain U-shaped pipe, an outside drain U-shaped pipe and a super-cooling section on the lower part of the heat exchanger. The utility model is characterized in that the pipe diameters of the inside drain U-shaped pipe and the outside drain U-shaped pipe are different. By adopting the technical proposal that the inside drain U-shaped pipe is larger than the outside drain U-shaped pipe, an imported refrigerating medium is high temperature high pressure air. The adoption of the pipe with a larger inside diameter can effectively reduce the pressure lost and increase the flow rate; at the rear section of the stream, the volume of the refrigerating medium is greatly reduced; the pipe with a smaller inside diameter can enhance the heat exchange, the heat exchange ability of the heat exchanger is integrally increased.

Description

Fin-tube type reducing heat exchanger and the air-conditioner outdoor unit of this heat exchanger is installed

Technical field

The utility model relates to heat exchanger of air conditioner outdoor unit, relates in particular to the architecture advances of off-premises station heat exchanger.

Background technology

Inside and outside row U type pipe all is the copper pipe that adopts identical caliber in the heat exchanger of air conditioner, but because the different heat transfer boundary condition of inside and outside row.The inside and outside row's heat transfer boundary condition of fin-tube type heat exchanger has tangible difference, exists following deficiency: 1. owing to have evident difference before and after the coefficient of heat transfer, cause inhomogeneous heat exchange, reduced heat exchange efficiency.2. because inside and outside row U type pipe caliber is identical, causing effluxing U type pipe flow velocity can not improve, and is difficult to improve exchange capability of heat.3. because inside and outside row U type pipe caliber is identical, cause fin area not have otherness to change, heat exchange area is raising not, and it is insufficient especially to efflux U type heat transfer outside a tube.How to make heat exchanger can give full play to its exchange capability of heat, be necessary to change the inside and outside row's of dual-row heat exchanger structural parameters, to improve exchange capability of heat.

The utility model content

The utility model provides a kind of fin-tube type reducing heat exchanger and the air-conditioner outdoor unit of this heat exchanger has been installed, and the heat exchange efficiency that it can solve the prior art existence is low, and exchange capability of heat is difficult to problems such as raising.

In order to reach the purpose that solves the problems of the technologies described above, the technical solution of the utility model is, a kind of fin-tube type reducing heat exchanger, and it comprises inside and outside row U type pipe, the super cooled sect of heat exchanger bottom is characterized in that described inside and outside row U type pipe caliber difference.

In the technical solution of the utility model, also have following technical characterictic: row U type pipe caliber is greater than effluxing U type pipe in described.

In the technical solution of the utility model, also have following technical characterictic: row U type pipe caliber is preferably 8.0mm in described, effluxes U type pipe caliber and is preferably 7.0mm.

In the technical solution of the utility model, also have following technical characterictic: row's U type pipe is with to efflux between the U type pipe tube pitch identical in described.

In the technical solution of the utility model, also have following technical characterictic: the super cooled sect outlet of heat exchanger bottom connects capillary.

In the technical solution of the utility model, also have following technical characterictic: described capillary is a two-way, and one the tunnel connects the outlet of interior row U type pipe; Another road connection effluxes the outlet of U type pipe.

In the technical solution of the utility model, also have following technical characterictic: described inside and outside row U type pipe is an inner screw thread copper pipe.

In the technical solution of the utility model, also have following technical characterictic: the described U of effluxing type pipe caliber is greater than interior row U type pipe.

The utility model compared with prior art has the following advantages and good effect:

1. row U type pipe is greater than the technical scheme that effluxes U type pipe in adopting, the import cold-producing medium is a high temperature and high pressure gas, adopt internal diameter can effectively reduce the pressure loss than bassoon, improve flow, at the stream back segment, refrigerant volume reduces greatly, and internal diameter can enhanced heat exchange than tubule, and integral body has improved the heat exchanger exchange capability of heat.

2. because to efflux U type bore less, improve flow velocity, improved exchange capability of heat.

3. be provided with the two-way capillary in the super cooled sect outlet,, can regulate each road flow, make flow even, improved heat exchange efficiency by regulating capillary pipe length.

4. it is little to efflux U type pipe caliber, can increase the area of dissipation of outside fin, can improve exchange capability of heat equally.

Description of drawings

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

Fig. 1 is the utility model fin-tube type reducing heat exchanger structure schematic diagram.

1. heat exchanger; 2. interior row U type pipe; 3. efflux U type pipe; 4. super cooled sect; 5. inlet tube; 6. outlet; 7. capillary.

The specific embodiment

Referring to Fig. 1, heat exchanger 1 effluxes U type pipe 3 and adopts φ 7.0 inner screw thread copper pipes, and interior row U type pipe 2 adopts φ 8.0 inner screw thread copper pipes.Interior row U type pipe 2 is identical with the spacing that effluxes between the U type pipe 3, and spacing is 21mm.

Super cooled sect 4 outlets of heat exchanger 1 bottom are connected with capillary 7, and capillary 7 is a two-way, and one the tunnel connects 2 outlets of interior row U type pipe; Another road connection effluxes 3 outlets of U type pipe.Thereby can regulate flow, to reach the uniform purpose of flow by regulating the length of two-way capillary 7.Two capillaries all are external diameter 3.0mm, and internal diameter is 1.5mm, length 500mm.

The utility model is by changing the diameter of inside and outside row U type copper pipe, and from waiting heat to arrange and a synergistic principle flow path redesigns, improved the heat exchange efficiency of heat exchanger, and verified identical result from test.

The above, it only is preferred embodiment of the present utility model, be not to be the restriction of the utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.

Claims

1. fin-tube type reducing heat exchanger, it comprises inside and outside row U type pipe, the super cooled sect of heat exchanger bottom is characterized in that described inside and outside row U type pipe caliber difference.

2. fin-tube type reducing heat exchanger according to claim 1 is characterized in that described interior row U type pipe caliber is greater than effluxing U type pipe.

3. fin-tube type reducing heat exchanger according to claim 2 is characterized in that described interior row U type pipe caliber is preferably 8.0mm, effluxes U type pipe caliber and is preferably 7.0mm.

4. fin-tube type reducing heat exchanger according to claim 3, it is characterized in that described in row's U type pipe with to efflux between the U type pipe tube pitch identical.

5. fin-tube type reducing heat exchanger according to claim 4 is characterized in that the super cooled sect outlet of heat exchanger bottom connects capillary.

6. fin-tube type reducing heat exchanger according to claim 5 is characterized in that described capillary is a two-way, and one the tunnel connects the outlet of interior row U type pipe; Another road connection effluxes the outlet of U type pipe.

7. fin-tube type reducing heat exchanger according to claim 6 is characterized in that described inside and outside row U type pipe is an inner screw thread copper pipe.

8. fin-tube type reducing heat exchanger according to claim 1 is characterized in that the described U of effluxing type pipe caliber is greater than interior row U type pipe.

9. an air-conditioner outdoor unit is characterized in that being equipped with any described fin-tube type reducing of the claim heat exchanger in the aforesaid right requirement.