CN103277943A

CN103277943A - Heat exchanger

Info

Publication number: CN103277943A
Application number: CN2013102121059A
Authority: CN
Inventors: 向运明
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-31
Filing date: 2013-05-31
Publication date: 2013-09-04

Abstract

The invention relates to a heat exchanger comprising heat exchange tubes and heat exchange fins. The heat exchange fins are unequal in width, each side edge of each fin comprises a curve, and radiuses of curvature are nonidentical. The heat exchanger fins are equal in size along a specific direction, and raw materials can be utilized fully. Tube pitch (distance between each tube and one adjacent tube in the same layer of heat exchange tubes) of the heat exchanger can be designed to non-equidistant distribution, and the heat exchanger can be combined by the heat exchange tubes of different tube diameters. The heat exchanger fully conforms to flow field distribution of a wall-mounted air-conditioning indoor unit; in areas with large pressure difference and high air velocity, the width of the heat exchange fins is large, the tube pitch of the heat exchange tubes is small, and air heat exchange is sufficient; and in areas with small pressure difference, the width of the heat exchange fins is small, the tube pitch of the heat exchange tubes is large, damping in decreased, and certain air velocity is maintained. After air flows through an evaporator, temperature difference of each area is small, heat exchange is sufficient, and condensation caused by large temperature difference is avoided. The heat exchanger does not need to be bent, the heat exchange fins need not to be cut at bent positions, and accordingly noise and abnormal sound caused by over-high local air velocity at kerfs of normal bent evaporators are prevented.

Description

A kind of heat exchanger

Technical field

The present invention relates to a kind of heat exchanger, can improve the indoor apparatus of air conditioner flow field, reduce air-conditioning noise, promote heat exchange efficiency, belong to refrigeration technology field.

Background technology

Present wall hanging type air conditioner indoor unit, its body width of the heat-exchanger fin of employing equate, because requirement and the spatial constraints in indoor apparatus of air conditioner air channel, indoor apparatus of air conditioner front evaporator device also needs to bend 1 time or repeatedly.This just comes with some shortcomings: 1. the heat exchanger sheet is wide equates, so air damping is equal substantially on the whole everywhere for evaporimeter.Learnt that by the indoor apparatus of air conditioner flow field analysis pressure reduction of its windward side of evaporimeter diverse location and lee face does not wait during air-conditioning work, the local air velocity height that pressure reduction is big, air quantity is big; The local air velocity that pressure reduction is little is low, and air quantity is little, and heat exchanger utilizes insufficient.2. the bending heat exchanger need cut heat exchange fin, and there is the slit in the place that causes bending, and air damping is little, flow velocity is very big, and noise increases, and air heat exchange is insufficient, the inabundant condensation of airborne water is separated out under refrigerating state, may cause condensation to blow problems such as water.

Summary of the invention

The present invention is directed to the deficiencies in the prior art, adopt the heat exchanger of new departure.As shown in Figure 1, heat exchanger is made up of heat exchanger tube 1 and heat exchange fin 2.

The main part burst of the heat exchange fin of heat exchanger of the present invention is wide not to be identical, the pressure reduction of windward side and lee face relation when working according to heat exchanger, and the local heat exchange fin that pressure reduction is big is wideer, strengthens heat exchange, increases damping; The local heat exchange fin that pressure reduction is little is narrower, reduces damping, keeps certain flow rate.As shown in Figure 2, the wide size a of sheet, b, c, d are nonidentical.

The heat exchange fin dual-side of heat exchanger of the present invention or be curve on one side wherein, and curve curvature radius is not identical, but change with the position is different.As Fig. 2, the side w1 of heat exchange fin and w2 are curve, and radius of curvature is not constant, and radius of curvature changes with the position is different.

Through suitable design, the heat exchange fin of heat exchanger equates in a certain specific direction size.As Fig. 3, the horizontal size at any place of heat exchange fin main part is identical in the horizontal direction, equates as L1, L2 on Fig. 3, L3, L4, be equivalent to the side w1 along continuous straight runs translation certain distance of heat exchange fin after, w2 overlaps fully with the heat exchange fin side.When heat exchange fin gets off from the raw material stamping-out, can take full advantage of raw material by arranging as shown in Figure 4, avoid waste.

The heat exchanger tube of heat exchanger can be designed to one or more layers according to the exchange capability of heat demand, is the heat exchanger of two-layer heat exchanger tube as Fig. 5.

The pipe of heat exchanger tube can be designed to equate apart from (in one deck heat exchanger tube, the distance between pipe and the adjacent tubes) in the heat exchanger, is convenient to make and assembling.But the pressure reduction of heat exchanger windward side and lee face does not wait, and the air velocity that flows through heat exchanger is variant, in order to take full advantage of heat exchanger, can adjust the pipe distance of heat exchanger, and the ground square tube distance that flow velocity is high is little, and the ground square tube distance that flow velocity is low is big.As Fig. 6, pipe does not wait apart from j1, j2, j3.

The diameter of each heat exchanger tube of heat exchanger can be designed to identical, is convenient to make and assembling.But in order to improve heat exchange efficiency and to take full advantage of raw material, the combination that can arrange different tube diameters.Such as at the high bigger heat exchanger tube of local placement diameter of air velocity, improve exchange capability of heat, and suitably improve damping air velocity is more evenly distributed; And at the low less heat exchanger tube of local placement diameter of air velocity, save material, and reduce damping, improve air velocity.As Fig. 5, caliber φ k1, φ k2 difference.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the example of heat exchanger of the present invention.

Fig. 2 is that its sheet of fin of heat exchanger of the present invention is wide nonidentical, and the nonidentical schematic diagram of fin side curvature.

Fig. 3 is the example that heat exchanger along continuous straight runs size of the present invention equates.

Fig. 4 is the schematic diagram of arranging of heat exchange fin stamping-out from the raw material of heat exchanger of the present invention.

Fig. 5 is the schematic diagram that heat exchanger of the present invention adopts the heat exchanger tube of 2 layers of heat exchanger tube and different-diameter to arrange.

Fig. 6 is the layout schematic diagram of the different pipe of the heat exchanger tube distance of heat exchanger of the present invention.

1. heat exchanger tubes, 2. heat exchange fin among the figure.

The specific embodiment

As shown in Figure 1, heat exchanger windward side and lee face are curved surface, heat exchanger comprises heat exchanger tube 1 and heat exchange fin 2, heat exchanger tube 1 is long U-shaped pipe, and this heat exchanger adopts two-layer heat exchange tube design, and all long U-shaped pipe calibers are identical, the pipe of heat exchanger tube is apart from (in one deck heat exchanger tube in the heat exchanger, distance between pipe and the adjacent tubes) nonidentical, as Fig. 6, pipe does not wait apart from j1, j2, j3; Both sides w1 and the w2 of heat exchange fin 2 are curve, and its curvature constantly changes, and as Fig. 3, overlap with w2 behind the w1 along continuous straight runs translation certain distance.When heat exchange fin gets off from the raw material stamping-out, can take full advantage of raw material by arranging as shown in Figure 4, avoid waste.

Present embodiment is used for the front evaporator device of wall hanging type air conditioner indoor unit, the Flow Field Distribution situation of the wall hanging type air conditioner indoor unit of fully having fitted, and the zone big at pressure reduction, that air velocity is high, the sheet of heat exchange fin is roomy, and the pipe of heat exchanger tube makes the abundant heat exchange of air apart from little; In the little zone of pressure reduction, the sheet of heat exchange fin is wide little, and the pipe of heat exchanger tube reduces damping apart from big, keeps certain air velocity, takes full advantage of raw material.Air is flowed through behind the evaporimeter, and each space temperature variation is littler, and heat exchange is abundant, the condensation problem of avoiding the temperature difference to cause greatly.The present embodiment heat exchanger need not bend, so need not cut at bending place heat exchanging fin, avoids the different mail topic of the excessive noise that causes of local air flow velocity at common bending evaporimeter joint-cutting place.

Claims

1. a heat exchanger comprises heat exchanger tube and heat exchange fin, and the width that it is characterized in that the heat exchange fin main part is not to wait width.

2. a heat exchanger comprises heat exchanger tube and heat exchange fin, it is characterized in that the heat exchanger fin dual-side or wherein on one side its main part comprise curve, and curve curvature radius is not identical, but changes with the position is different.

3. according to claim 1 or 2 described heat exchangers, it is characterized in that: heat exchanger fin equates along size on the specific direction.

4. according to claim 1 or 2 described heat exchangers, it is characterized in that: the heat exchanger tube of heat exchanger is arranged can be designed to one or more layers.

5. according to claim 1 or 2 described heat exchangers, it is characterized in that: the pipe of heat exchanger tube is designed to not be equally spaced apart from (in one deck heat exchanger tube, the distance between pipe and the adjacent tubes) in the heat exchanger.

6. according to claim 1 or 2 described heat exchangers, it is characterized in that: each heat exchange tube design of heat exchanger becomes the combination of different tube diameters.