CN2534543Y

CN2534543Y - Easy-to-defrost high efficiency heat-exchange tube

Info

Publication number: CN2534543Y
Application number: CN 02207678
Authority: CN
Inventors: 柯朝阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-14
Filing date: 2002-03-14
Publication date: 2003-02-05
Anticipated expiration: 2012-03-14

Abstract

The utility model provides an easy-defrosting high-efficient heat-exchanger tube and is applied to the delivery of all cooling media, which comprises a hollow tube body having a cooling-medium flowing channel, a plurality of heat-exchanging fins that are outwards and downwards inclined from the outer surface of the hollow tube body at intervals and present a radiation shape with different lengths. The heat-exchanging fin can increase the heat-exchanging area and effectively enhance the heat transmission efficiency; at the same time, the heat-exchanging fin can also reduce the contact area of the ice and the frost and can easily remove the frost.

Description

The high efficiency heat-exchange tube of easy-to-defrost

(1) technical field

The utility model relates to a kind of heat-exchange tube, particularly relates to a kind of being applicable to and carries various cold mediums, utilizes heat exchange action to regulate the high efficiency heat-exchange tube of easy-to-defrost of temperature.

(2) background technology

Be provided with the heat-exchange tube that to carry cold medium in the general heat-exchange apparatus as freezer, because cold medium flows and the altitude temperature difference effect that high temperature gas flow produced of managing the external space in the heat-exchange tube, absorb the high heat energy that high temperature gas flow is carried secretly by heat exchange action, can reach the purpose of timely adjustment temperature.

Consult Fig. 1, existing heat-exchange tube 1 comprises that one has the hollow tube 11 of a cold medium runner 110, its material is generally steel, this hollow tube 11 can be by a fixture 12 (for example U-bolt that conforms to these hollow tube 11 shapes), and this hollow tube 11 of clamping and spiral shell are located on the angle bar 13 of ceiling (not shown) in the heat-exchanging chamber.But because the outside wall surface of this hollow tube 11 is to belong to the plain tube face, wherein the heat exchange action of cold medium of Liu Donging and extraneous high thermal current only depends on this hollow tube 11 tube wall transmission, make that the contact area of heat exchange action is limited and cause the heat exchange action effect to be difficult to promote, and when heat exchange action, condensation effects also can be supervened, the high thermal current that carries high humility is met and is coldly made temperature decrease and condense into the globule, even frosting becomes ice again in this hollow tube outside wall surface, reduces the contact area of heat exchange and reduces heat exchanger effectiveness.

So, as if the adjusting temperature efficiency of desiring to reach higher, the quantity that then must increase heat-exchange tube 1 in the heat-exchanging chamber is to increase the contact area of heat exchange, the demand of cold medium is heightened, and increase heat-exchange tube expensive steel material cost, set up cost burdens such as expense, pipeline lengthening, electric energy loss.

Consult Fig. 2, the material of another kind of existing heat-exchange tube 2 is a light weight, ductility is good and be shaped easy aluminium, comprise that one has the hollow tube 20 of a cold medium flowing space 21, and it is a plurality of from the outward extending equal length heat exchange fin 22 of these hollow tube 20 outer walls, by this heat exchange fin 22 contact area of heat exchange action is increased, heat transfer area increases and just can effectively promote heat exchanger effectiveness reaching preferable thermoregulation effect, and has that the cold medium demand reduces and advantage such as the body consumables cost is cheap.Yet, because should be from the formation of the outward extending heat exchange fin 22 of hollow tube 20 outer walls, because of shape relation makes setting up of this heat-exchange tube 2 fixing difficult.

In addition, heat exchange action mainly is to occur in the end of this heat exchange fin 22 and part occurs in other zones of this heat exchange fin 22.Though the heat exchange area increase can improve heat exchanger effectiveness, but because the evolving path of flowing through of extraneous high thermal current is indefinite, the probability of heat exchange fin 22 ends of this equal in length of desire contact-impact is very little, so the high thermal current of carrying high humility secretly is after contacting wherein a slice heat exchange fin 22, have when not touched these hollow tube 20 outside wall surface by the air-flow of exchange humidity if continue diffusion fully as yet, to make the moisture frosting on these hollow tube 20 outside wall surface, in addition, heat exchange fin 22 towards the top just pools the globule earlier when aqueous vapor does not condense into frost, be easy to flow on hollow tube 20 surfaces by heat exchange fin 22 surfaces towards the top, and form a frosting layer at this, hollow tube 20 is all coated, except that causing heat exchanger effectiveness significantly reduces, also produce shape because of this radial heat exchange fin and make shortcomings such as this hollow tube 20 places frosting removing is difficult.

(3) utility model content

Therefore, but the purpose of this utility model is to provide a kind of cooling medium to carry, and having increases heat exchange area, continues to keep dynamical heat exchanger effectiveness and have concurrently the high efficiency heat-exchange tube of easy-to-defrost simple and easy and usefulness such as can increase the service life is set.

The high efficiency heat-exchange tube of the utility model easy-to-defrost, be applicable to the conveying of various cold mediums, this heat-exchange tube comprise a hollow tube with cold medium runner, a plurality of different in size from this hollow tube outside wall surface radial the outside and downward-sloping heat exchange fin that protrudes out.Can prevent that by the design that increases heat exchange area and fin the globule from coming together on the hollow tube, be provided with simple and easy and effect such as increase the service life to reach dynamical heat exchanger effectiveness and to have concurrently.

For further specifying the purpose of this utility model, design feature and effect, the utility model is described in detail below with reference to accompanying drawing.

(4) description of drawings

Fig. 1 is the existing profile of heat-exchange tube when user mode.

Fig. 2 is the stereogram of another kind of existing heat-exchange tube.

Fig. 3 is the stereogram of first preferred embodiment of the present utility model.

Fig. 4 is the cross-sectional schematic of the user mode of this preferred embodiment.

Fig. 5 is the side view of second preferred embodiment of the present utility model.

(5) specific embodiment

Consult Fig. 3 and Fig. 4, first preferred embodiment of heat-exchange tube 3 of the present utility model, comprise that but one has the hollow tube 31 of the cold medium runner 32 of cooling medium circulation, a plurality ofly outwards extend radially and heat exchange fin 33 different in size from these hollow tube 31 outside wall surface, 30, two respectively from the oppositely outside horizontally extending fixed part 34 in two heat exchange fins, 33 bottoms that is positioned at these hollow tube 31 bottoms, two respectively from the heat exchange fin 33 one ends upwardly extending retaining wall 35 of this fixed part 34 away from this length that is positioned at hollow tube 31 bottoms, one outer layer surface shape is close to the corrosion resistant metal pipe 36 of these hollow tube 31 internal faces with being harmonious, and a plurality of the perforates 37 that are opened on this fixed part 34.Hang a rhone 5 and on this retaining wall 35, can collude, to accept the globule that on long heat exchange fin 33, is dripped.

When the heat exchange fin 33,30 that differs when this is long and short contacts with the extraneous thermal current of carrying high humility secretly, because of heat exchange action makes the thermal current of high humility because of moment low temperature contact condensation frosting on this long heat exchange fin 33, this phenomenon major part can betide on this long heat exchange fin 33 end away from this hollow tube 31, and the frost of frosting in the end of long heat exchange fin 33 is to be radial.

When high thermal current in contact for the first time long heat exchange fin 33 the end and after producing for the first time heat exchange action, moisture content promptly can be the radial white shape that condenses in its end, when if lasting past close these hollow tube 31 directions of high thermal current spread, at this moment, on the air-flow the evolving path, contact with long heat exchange fin 33 nearly all earlier because of airborne aqueous vapor, moisture content can be fewer and feweri relatively, so when air-flow contacts short heat exchange fin 30 ends again, just be difficult for condensing into frost, so, the chance that produces frosting layer phenomenon at hollow tube 31 is fewer, so by long, the short heat exchange fin 33 that differs, 30 can improve heat exchanger effectiveness effectively.Simultaneously,, make its vibration, can shake off this frosting partly, have good defrosting effect as long as touch long heat exchange fin 33 because of the frost layer all condenses in the end of long heat exchange fin 33.

In addition, this long and short heat exchange fin that differs the 33, the 30th, the state that is tilted down, therefore contact with air-flow on its surface and during the condensation formation globule, the globule can be along the inclined plane of this long and short heat exchange fin 33,30 and is tumbled, so the globule can not accumulate in long heat exchange fin 33 surfaces and go up and frosting, simultaneously, but this this hollow tube 31 of fixed part 34 support fixation appropriate location 4 in heat-exchange apparatus can be improved existing heat-exchange tube and be set firmly and be difficult for and set up shortcoming such as expense height.In addition, because this retaining wall 35 can be with colluding extension for a rhone 5, borrow this to be opened in perforate 37 on this fixed part 34, can flow in this rhone 5 for the globule of drippage, the globule or white piece that this rhone 5 drips in the time of can accepting and be formed at the globule that drips on this long and short heat exchange fin 33,30 or defrosting operation because of the heat exchange action condensation, thus avoid the globule to spatter other elements or the surrounding environment of heat-exchange apparatus with water.

Can insert the protection of a corrosion resistant metal pipe 36 in the cold medium runner 32 of the hollow tube 31 of this preferred embodiment, can strengthen the resistance to corrosion of this hollow tube 31 and avoid, more can improve its service life and reduce the maintenance cost cost by the cold medium corrosion failure.

Consult Fig. 5, second preferred embodiment of the utility model heat-exchange tube 6, its structure is all identical with above-mentioned this first preferred embodiment with effect, is not described in detail in this.Wherein unique difference be in, this hollow tube 61 also is formed with a zigzag with the surface of long and short heat exchange fin 63,60.And utilize this zigzag can significantly increase heat exchange area, to improve heat exchanger effectiveness.

So, by this heat exchange fin different in

size

63,60, can increase carry high humility secretly air-flow on the evolving path with the contact area of this long heat exchange fin 63, to absorb most of aqueous vapors, and the air-flow that can effectively avoid high humility directly carries out heat exchange on these hollow tube 61 outside wall surface and frosting on the outside wall surface of this hollow tube 61, so can more effectively promote and keep high exchange rate and reach preferable adjustment effect, the heat exchange area that can overcome existing heat-exchange tube inadequately and easily be formed at frost easy-clear and cause the shortcoming that reduces the heat exchange effect not on the hollow tube outside wall surface.

Conclude above-mentioned, heat-exchange tube of the present utility model, comprise a hollow tube with a cold medium runner, a plurality ofly stretch out radially and heat exchange fin, two fixed parts, two retaining walls different in size from this hollow tube outside wall surface, and a corrosion resistant metal pipe layer, it has following advantage really: 1. heat exchange area is big and increase the chance of heat exchange action and promote heat exchanger effectiveness and remove the moisture that air-flow is carried secretly effectively; 2. can reduce the construction pipe number, the cold medium amount of expending etc. of heat-exchange tube and reduce manufacturing cost; 3. it is quite convenient to set firmly; 4. reduce the probability of condensation frosting greatly, to avoid the heat exchanger effectiveness rapid drawdown in hollow tube; 5. strengthen the resistance to corrosion of heat-exchange tube hollow tube internal face, can prolong its service life, reduce maintenance cost and guarantee construction safety; 6. have the globule that to accept from this heat exchange fin drippage to avoid spattering other elements etc. with water, can overcome the shortcoming that existing heat-exchange tube exists effectively.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claims variation, the modification of the above embodiment.

Claims

1. the high efficiency heat-exchange tube that easily defrosts is applicable to the conveying of cold medium, it is characterized in that it comprises:

One hollow tube, but the cold medium runner that a cooling medium flows had;

A plurality of heat exchange fins different in size, the outside at intervals and downward-sloping extension radially from the hollow tube outside wall surface, and the heat exchange fin length of being separated by in twos is different.

2. the high efficiency heat-exchange tube of easy defrosting as claimed in claim 1 is characterized in that:

Easily the high efficiency heat-exchange tube of defrosting also comprises two fixed parts that protrude out from the oppositely outside level in two heat exchange fin bottoms of this hollow tube bottom respectively, with this hollow tube of support fixation.

3. the high efficiency heat-exchange tube of easy defrosting as claimed in claim 2 is characterized in that:

Each fixed part has one respectively from an end upwardly extending retaining wall of this fixed part away from this heat exchange fin, and offers a plurality of perforates respectively in two fixed parts.

4. the high efficiency heat-exchange tube of easy defrosting as claimed in claim 1 is characterized in that:

It also comprises a corrosion resistant metal pipe layer, and the outer layer surface shape of this corrosion resistant metal pipe layer is close to the internal face of this hollow tube with being harmonious, to avoid the corrosion failure of cold medium to body.

5. the high efficiency heat-exchange tube of easy defrosting as claimed in claim 1 is characterized in that:

The surface of this hollow tube and heat exchange fin forms zigzag.