CN219319143U - Efficient foam metal heat exchanger with Z-shaped louver fins - Google Patents

Abstract

The utility model relates to a high-efficiency foam metal heat exchanger with Z-shaped shutter fins, and belongs to the technical field of heat exchangers. The multi-hole flat tube group comprises a first collecting tube, a second collecting tube, a multi-hole flat tube group and a plurality of groups of Z-shaped shutter fins, wherein the first collecting tube and the second collecting tube are horizontally arranged and are parallel to each other; the porous flat tube groups are all obliquely arranged, two ends of each porous flat tube are correspondingly communicated with the first collecting pipe and the second collecting pipe respectively, the shutter fins are made of open-cell foam metal aluminum/copper and are arranged between the oblique porous flat tube groups at equal intervals in a Z shape. The utility model solves the problems of small heat exchange area and large heat resistance of the corrugated pipe, cold and hot fluids taking part in heat transfer flow through the porous foam metal channel, thereby enhancing heat exchange, and having lighter weight, smaller volume and more compact structure; the collecting pipe is additionally arranged, and the guide plate is arranged on the air side by foam metal, so that the problems of collecting and discharging condensed water are solved.

Description

Efficient foam metal heat exchanger with Z-shaped louver fins

Technical Field

The utility model belongs to the technical field of heat exchangers, and particularly relates to a Z-shaped shutter fin efficient foam metal heat exchanger.

Background

With the development of the demand for light weight of automobiles, the application direction of novel materials has also been shifted from automobile body outer panels to structural members and functional members, such as automobile air conditioning heat exchangers. At present, fins are widely used as reinforcing heat exchange surfaces to be filled among micro channels so as to improve the heat exchange efficiency of the heat exchanger, and the defects of increased density, increased weight and the like of stainless steel materials are brought to the fins, so that aiming at the problems, a novel material is needed to be adopted for substitution, a runner is structurally improved, and the heat transfer surface is perfected so as to meet the comprehensive requirements of sound absorption, noise reduction, high efficiency, energy saving, light weight, small size and convenience in maintenance.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art, and therefore, the utility model provides the high-efficiency foam metal heat exchanger with the Z-shaped shutter fins, which has the characteristics of small air flow resistance, good drainage performance and strong heat transfer performance.

The aim of the utility model is realized by the following technical scheme:

the utility model provides a high-efficient foam metal heat exchanger of Z font shutter fin, includes first pressure manifold, second pressure manifold, porous flat nest of tubes and multiunit Z font shutter fin, first pressure manifold, second pressure manifold are the level and to setting up to be parallel to each other between first pressure manifold and the second pressure manifold, porous flat nest of tubes all is the slope setting to the both ends of each porous flat pipe correspond the intercommunication in first pressure manifold, second pressure manifold respectively, shutter fin is made by open cell foam metal aluminium or open cell foam copper, is Z font equidistant range between the porous flat nest of tubes of slope.

Further, each group of the Z-shaped shutter fins consists of 5-10 fins.

Further, the arrangement direction of the Z-shaped shutter fins is intersected with the inclined direction of the flat tube, and the intersecting angle beta is 60-70 degrees.

Further, the porous flat tube is intersected with the first collecting tube, and the intersection angle alpha is 100-120 degrees.

Further, the first collecting pipe and the second collecting pipe are respectively provided with a partition board, and the flat pipes are characterized by comprising a plurality of flow channels.

Further, the inlet and the outlet are arranged on the same side or different sides of the first collecting pipe.

Further, the inclined porous flat tube is made of closed-cell foam metal copper/aluminum.

Further, the flat pipe, the first collecting pipe and the second collecting pipe are all covered with a composite welding layer.

Further, the fin is provided with a guide and water diversion grooves on the left side and the right side of the fin.

The beneficial effects of the utility model are as follows:

the first collecting pipe and the second collecting pipe are favorable for collecting and distributing the refrigerant in the flat pipes, the heat exchange efficiency is improved, the distance of the refrigerant moving in the height direction in the first collecting pipe and the second collecting pipe is determined by the position of the partition plate, and the distance is changed by adjusting the position of the partition plate, so that the refrigerating capacity is improved.

A plurality of flat pipes are arranged between the first collecting pipe and the second collecting pipe, the flat pipes are obliquely arranged, the porous flat pipes are intersected with the first collecting pipe, the intersection angle alpha is 100-120 degrees, the manufacturing material is closed-cell foam metal, and meanwhile, the two ends of each flat pipe are respectively inserted into the first collecting pipe and the second collecting pipe, so that the cooling medium can be dispersed, the heat exchange area can be increased, the heat exchange efficiency can be improved, and the weight of the heat exchanger can be reduced.

The shutter foam metal fins are used for increasing the contact area between the flat tubes and air, periodically destroying the fluid boundary layer, increasing the heat exchange between the fluid and the fins, and simultaneously increasing the heat exchange area, and are Z-shaped and arranged between the flat tubes at intervals, the Z-shaped structure can reduce the connection ports of the flat tubes and the fins, and reduce the thermal resistance of the fins and the air resistance.

The Z-shaped shutter foam metal fins are provided with the diversion grooves and the diversion grooves are arranged on the left side and the right side of the fins, so that the adhesion of folded corners on the surface is prevented, the condensation water is converged, the condensation water is promoted to flow downwards rapidly, and the effect of timely draining is achieved.

The unique porous structure of the foam metal can play a role in destroying a fluid flow boundary layer, increasing turbulence degree and further strengthening heat transfer, and the foam metal has the structural characteristics of large specific surface area, large heat transfer coefficient and light weight, and can increase the heat exchange area and reduce the weight of the heat exchanger, so that the heat exchange efficiency is improved.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of the overall structure of a zigzag louvered fin high-efficiency foam metal heat exchanger of the present utility model;

FIG. 2 is a left side view of a metal foam zigzag louvered fin foam of the present utility model;

FIG. 3 is a schematic view of a flat tube in a zigzag louvered fin high efficiency foam metal heat exchanger provided by the present utility model;

fig. 4 is a diagram of the positional relationship among the flat tube, the first collecting tube and the fins in the zigzag shutter fin high-efficiency foam metal heat exchanger.

Reference numerals:

1: a first header; 2: and a second collecting pipe: 3: a porous flat tube group; 4: a fin group; 5: a partition plate; 6: a trapezoidal inlet; 7: a trapezoidal outlet; 8: a blanking cover; 31. a flow passage; 41. a fin; 42. a drainage tube; 43. a shutter; 44. a deflector;

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples.

Examples: the utility model provides a high-efficiency foam metal heat exchanger with Z-shaped shutter fins, which comprises a first collecting pipe 1, a second collecting pipe 2, a porous flat pipe group 3 and a plurality of groups of Z-shaped shutter fins 4, wherein the first collecting pipe 1 and the second collecting pipe 2 are horizontally arranged, the first collecting pipe 1 and the second collecting pipe 2 are mutually parallel, the porous flat pipe group 3 is obliquely arranged, the left side end of the first flat pipe is communicated with the first collecting pipe, the right end of the last flat pipe is correspondingly communicated with the 2 nd collecting pipe, the shutter fins 4 are made of open-cell foam metal aluminum/copper and are arranged between the inclined porous flat pipe groups 3 at equal intervals in a Z shape, the inlet and outlet collecting pipes 6 and 7 are respectively arranged on the upper side of the first collecting pipe and the lower side 1 of the second collecting pipe, each group of Z-shaped shutter fins consists of 8-10, the arrangement direction of the Z-shaped shutter fins is intersected with the oblique direction of the flat pipes, the intersection angle beta is 60-70 degrees, the inclination angle beta of the flat pipes is intersected with the first collecting pipe, the intersection angle alpha is 100 degrees, the intersection angle alpha is equal to 110 degrees, the first circulating fin and the second circulating fin is arranged on the first collecting pipe and the second circulating flow in the first collecting pipe and the second collecting pipe is orderly arranged. The section of the inlet pipe and the section of the outlet pipe are of ladder-shaped structures.

Referring to fig. 1, there is shown a schematic view of a structure in which a metal foam zigzag louvered fin 4 is installed on a parallel flow heat exchanger. The first collecting pipe 1 and the second collecting pipe 2 have the function of collecting refrigerant, and the blocking cap 9 is used for closing the collecting pipes. The refrigerant enters through the trapezoid inlet 7, the first collecting pipe 1 is shunted into part of the flat pipes 6, then the refrigerant in the flat pipes 6 flows into part of the flat pipes 6 again through the drainage plates 42 arranged on the fins 4, the refrigerant in the flat pipes continues to flow to the drainage plates 42, moves downwards after entering the drainage plates 42, and is shunted into part of the flat pipes 6 again. The refrigerant exchanges heat with air when passing through the flow guiding plate 42, then moves towards the flat tube 6, enters the flat tube 6, moves towards the air inlet side, is split into part of the flat tubes after passing through the flow guiding plate 42, then moves towards the second collecting tube 2, enters the second collecting tube 2, moves downwards, is split into part of the flat tubes 6 again, moves towards the second collecting tube 2, and finally is discharged from the trapezoid outlet. The refrigerant exchanges heat with the air flow when passing through the drainage plate 42, the Z-shaped foam metal fins increase the heat exchange area, the heat exchange coefficient is improved, the disturbance of the gas flow is increased due to the irregularity of the foam metal internal structure, the disturbance of the gas flow and the full contact of the air and the foam metal fins are facilitated, the heat exchange area is increased, and the heat exchange efficiency is increased. The deflector 44 guides the flow of condensate water to facilitate timely drainage.

According to the analysis, compared with the existing common windowed fin heat exchanger, the zigzag shutter fin high-efficiency foam metal heat exchanger ensures that the heat transfer efficiency is improved, meanwhile, the fins are arranged at intervals, so that the resistance loss of the air side is greatly reduced, the weight of the heat exchanger is reduced, the heat exchanger is more energy-saving, the cost can be reduced, and the distribution characteristic of fluid flow is optimal due to the fact that the inlet collecting pipe and the outlet collecting pipe are trapezoidal. Meanwhile, the porous flat tube is obliquely placed, so that the influence of gravity on the refrigerant distribution can be weakened, and the refrigerant distribution can be uniform.

It should be understood that the foregoing detailed description of the present utility model is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present utility model, and those skilled in the art should understand that the present utility model may be modified or substituted for the same technical effects; as long as the use requirement is met, the utility model is within the protection scope of the utility model.

Claims (9)

1. A high-efficient foam metal heat exchanger of Z-shaped shutter fin, its characterized in that: the multi-hole flat tube group comprises a first collecting tube, a second collecting tube, a multi-hole flat tube group and a plurality of groups of Z-shaped shutter fins, wherein the first collecting tube and the second collecting tube are horizontally arranged and are parallel to each other; the porous flat tube groups are all obliquely arranged, two ends of each porous flat tube are correspondingly communicated with the first collecting pipe and the second collecting pipe respectively, the shutter fins are made of open-cell foam metal aluminum/copper and are arranged between the oblique porous flat tube groups at equal intervals in a Z shape.

2. The high-efficiency foam metal heat exchanger with the zigzag louver fins according to claim 1, wherein each group of the zigzag louver fins consists of 5-10 fins.

3. The efficient foam metal heat exchanger with the zigzag louver fins according to claim 1, wherein the arrangement direction of the zigzag louver fins is intersected with the inclined direction of the flat tube, and the intersection angle beta is 60-70 degrees.

4. The zigzag louver fin high efficiency foam metal heat exchanger according to claim 1, wherein the inclined direction of the porous flat tube intersects the first collecting tube at an angle α of 100 ° to 120 °.

5. The zigzag louvered fin high efficiency foam metal heat exchanger of claim 1 wherein the first header and the second header are each provided with a baffle, each of the flat tubes comprising a plurality of flow channels.

6. The zigzag louvered fin high efficiency foam metal heat exchanger of claim 1 wherein the heat exchanger inlet and outlet are disposed on the same side or on different sides of the first header.

7. The zigzag louvered fin high efficiency foam metal heat exchanger of claim 1 wherein the inclined porous flat tube is made of closed cell foam metal copper/aluminum.

8. The zigzag louvered fin high efficiency foam metal heat exchanger of claim 1, wherein the flat tube, the first header and the second header are all clad with a composite weld layer.

9. The high-efficiency foam metal heat exchanger with the zigzag louver fin according to claim 1, wherein the fin is provided with a diversion and water diversion grooves on the left side and the right side of the fin.

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