CN219624561U - Loop heat pipe of flat evaporator - Google Patents

Abstract

The utility model discloses a loop heat pipe of a flat evaporator, which relates to the technical field of loop heat pipes, in particular to a loop heat pipe of a flat evaporator. This flat evaporator return circuit heat pipe through set up outside conducting strip in the outside of backward flow heat pipe, and the outside conducting strip of tortuous setting has increased the outside area of contact of backward flow heat pipe, has improved the outside refrigerated efficiency of backward flow heat pipe, and the cooling effect is better, through setting up inside conducting strip, and inside conducting strip has increased the inside area of contact of backward flow heat pipe, is favorable to the heat transfer of backward flow heat pipe inside to the backward flow heat pipe, has improved the heat conduction efficiency of backward flow heat pipe.

Description

Loop heat pipe of flat evaporator

Technical Field

The utility model relates to the technical field of loop heat pipes, in particular to a loop heat pipe of a flat-plate evaporator.

Background

The flat evaporator loop heat pipe is high-efficiency heat transfer equipment, can realize high-efficiency heat transfer, electromagnetic and vibration isolation, is convenient for flexible system arrangement and the like. The flat evaporator loop heat pipe in the normal temperature area takes water, acetone, methanol and the like as working mediums, and the pressure inside the loop heat pipe is slightly higher than atmospheric pressure or negative pressure, so the flat evaporator loop heat pipe can be designed into a flat evaporator structure with a large thermal contact plane and is used for radiating heat of a large-plane cooled device.

Patent publication number CN210292940U proposes a flat evaporator, which comprises a plate body, an end cover and a liquid suction core, wherein the liquid suction core is arranged inside the plate body, the outer surface of the liquid suction core is in contact with the plate body, the end cover and the plate body form a closed structure, a liquid inlet and a gas outlet are arranged on the closed structure, and the two ends of the liquid suction core are respectively a first end and a second end; the plurality of liquid suction cores are of an elongated tubular structure, tubular cavities are formed in the plate body, the liquid suction cores are arranged in the tubular cavities, the outer surfaces of the liquid suction cores are in contact with the inner surfaces of the tubular cavities, and the plurality of liquid suction cores are distributed in an array mode in the plate body; the liquid suction device comprises a plate body, a liquid inlet and a liquid outlet, wherein the plate body is internally provided with a liquid distributor, the liquid distributor is communicated with the liquid inlet, the liquid distributor comprises a heat insulation core, a liquid collecting cavity is arranged inside the heat insulation core, and the first end of each liquid suction core is connected with the heat insulation core; and an air collection cavity is further arranged in the plate body and communicated with the air outlet, and the second end of each liquid suction core faces towards the air collection cavity. When the structure is used, the evaporator of the low-temperature loop heat pipe is of a slender cylindrical structure, the contact area of the evaporator and a large-plane cooled device is small, and the cooling is uneven, so that the flat-plate evaporator loop heat pipe is provided.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a flat evaporator loop heat pipe, which solves the problems in the background art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a flat evaporator return circuit heat pipe, includes flat evaporator, installs the inside backward flow heat pipe of flat evaporator, the surface of backward flow heat pipe is connected with outside conducting strip, the inboard of backward flow heat pipe is connected with the conducting layer, the internal surface of backward flow heat pipe is connected with inside conducting strip, inside conducting strip inlays the dress in the conducting layer, the inboard of conducting layer is connected with the imbibition layer, the inboard of imbibition layer is connected with the slow flow piece.

Optionally, the reflow heat pipes are distributed in the interior of the flat evaporator in an S shape, capillary tubes are connected to the exterior of the reflow heat pipes at equal intervals, and the tail ends of the reflow heat pipes are connected with gas pipelines.

Optionally, the external heat conducting fins are in an M-shaped bending structure, and the external heat conducting fins are distributed at equal intervals outside the reflow heat pipe and are symmetrically distributed about the center of the reflow heat pipe.

Optionally, the internal heat conducting fins are in V-shaped bent structures, and the internal heat conducting fins are distributed in the reflow heat pipe at equal intervals and symmetrically distributed about the center of the reflow heat pipe.

Optionally, the liquid absorbing layer is of a porous structure, and the holes inside the liquid absorbing layer are communicated with each other.

Optionally, the slow-flow sheets are spirally distributed in the liquid absorption layer, and the slow-flow sheets are symmetrically distributed about the center of the liquid absorption layer.

The utility model provides a flat evaporator loop heat pipe, which has the following beneficial effects:

1. this flat evaporator return circuit heat pipe through set up outside conducting strip in the outside of backward flow heat pipe, and the outside conducting strip of tortuous setting has increased the outside area of contact of backward flow heat pipe, has improved the outside refrigerated efficiency of backward flow heat pipe, and the cooling effect is better, through setting up inside conducting strip, and inside conducting strip has increased the inside area of contact of backward flow heat pipe, is favorable to the heat transfer of backward flow heat pipe inside to the backward flow heat pipe, has improved the heat conduction efficiency of backward flow heat pipe.

2. This flat evaporator return circuit heat pipe through setting up the liquid absorbing layer, can be absorbed in the liquid absorbing layer after the inside gas cooling of backward flow heat pipe becomes liquid, makes liquid flow in the liquid absorbing layer, avoids liquid to gather into the drop of water in the backward flow heat pipe, causes the inside gas passage of backward flow heat pipe to be stopped up, through setting up the slow flow piece, can make gas be the heliciform flow in the backward flow heat pipe, has increased the time that gas flowed, makes gas carry out heat exchange's time longer, improves the cooling effect.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic diagram of a reflow heat pipe of the present utility model;

FIG. 4 is a schematic diagram of a cross-section of a reflow heat pipe of the present utility model;

fig. 5 is a schematic structural view of the liquid absorbent layer of the present utility model.

In the figure: 1. a flat evaporator; 2. a reflow heat pipe; 3. a capillary tube; 4. a gas conduit; 5. an external heat conductive sheet; 6. a heat conducting layer; 7. an inner heat conductive sheet; 8. a liquid absorbing layer; 9. and a slow flow sheet.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 to 3, the present utility model provides a technical solution: the utility model provides a flat evaporator return circuit heat pipe, including flat evaporator 1, install the backward flow heat pipe 2 in flat evaporator 1 inside, backward flow heat pipe 2 is S-shaped and distributes in the inside of flat evaporator 1, the outside equidistant capillary 3 that is connected with of backward flow heat pipe 2, through setting up backward flow heat pipe 2, the gas in backward flow heat pipe 2 can flow to the capillary 3 in cool off, further improve gaseous cooling effect, the end-to-end connection of backward flow heat pipe 2 has gas piping 4, the surface of backward flow heat pipe 2 is connected with outside conducting strip 5, outside conducting strip 5 is the kink structure of M shape, through setting up outside conducting strip 5 in the outside of backward flow heat pipe 2, the outside conducting strip 5 of tortuous setting has increased the outside area of contact of backward flow heat pipe 2, the outside of backward flow heat pipe 2 is cooled off efficiency has been improved, the cooling effect is better, outside conducting strip 5 equidistant distribution is in the outside of backward flow heat pipe 2 and about backward flow heat pipe 2 central symmetry distribution.

Referring to fig. 3 to 4, the inner side of the reflow heat pipe 2 is connected with a heat conducting layer 6, the inner surface of the reflow heat pipe 2 is connected with an inner heat conducting fin 7, the inner heat conducting fin 7 is in a V-shaped bending structure, and by arranging the inner heat conducting fin 7, the inner heat conducting fin 7 increases the contact area inside the reflow heat pipe 2, is beneficial to the transfer of heat inside the reflow heat pipe 2 to the reflow heat pipe 2, improves the heat conducting efficiency of the reflow heat pipe 2, and the inner heat conducting fins 7 are distributed inside the reflow heat pipe 2 at equal intervals and are distributed symmetrically about the center of the reflow heat pipe 2.

Referring to fig. 4 to 5, an inner heat conducting sheet 7 is embedded in a heat conducting layer 6, the inner side of the heat conducting layer 6 is connected with a liquid absorbing layer 8, the liquid absorbing layer 8 is of a porous structure and the holes in the inner side are mutually communicated, through the arrangement of the liquid absorbing layer 8, gas is cooled into liquid and then absorbed into the liquid absorbing layer 8, the liquid flows in the liquid absorbing layer 8, the phenomenon that the liquid is converged into water drops in a reflow heat pipe 2 to cause the blockage of a gas channel in the reflow heat pipe 2 is avoided, the inner side of the liquid absorbing layer 8 is connected with a flow retarding sheet 9, the flow retarding sheet 9 is spirally distributed in the liquid absorbing layer 8, the gas can spirally flow in the reflow heat pipe 2 through the arrangement of the flow retarding sheet 9, the time of gas flowing is prolonged, the time of heat exchange of the gas is prolonged, the cooling effect is improved, and the flow retarding sheet 9 is symmetrically distributed about the center of the liquid absorbing layer 8.

In summary, when the flat evaporator loop heat pipe is used, gas enters the interior of the return heat pipe 2 through the gas pipeline 4, heat in the gas is transferred to the return heat pipe 2 through the heat conducting layer 6, and then the return heat pipe 2 is cooled by dissipation, the contact area between the inner heat conducting sheet 7 in the return heat pipe 2 and the return heat pipe 2 is increased, the heat conducting effect of the heat conducting layer 6 to the return heat pipe 2 is improved, the contact area between the outer heat conducting sheet 5 outside the return heat pipe 2 and the cooling effect of the return heat pipe 2 is improved, when the gas in the return heat pipe 2 is cooled to form water drops, the water drops can be absorbed into the liquid absorbing layer 8, the liquid flows in the liquid absorbing layer 8, the phenomenon that the liquid is gathered into big water drops in the return heat pipe 2 is avoided, the gas channel in the return heat pipe 2 is blocked, the heat absorbing layer 8 can lead the gas to flow in a spiral shape in the return heat pipe 2, the time of the gas flowing is prolonged, and the time of heat exchange of the gas can be prolonged.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a flat evaporator return circuit heat pipe, includes flat evaporator (1), installs in inside backward flow heat pipe (2) of flat evaporator (1), its characterized in that: the outer surface of backward flow heat pipe (2) is connected with outside conducting strip (5), the inboard of backward flow heat pipe (2) is connected with heat conduction layer (6), the internal surface of backward flow heat pipe (2) is connected with inside conducting strip (7), inside conducting strip (7) inlay dress is in heat conduction layer (6), the inboard of heat conduction layer (6) is connected with imbibition layer (8), the inboard of imbibition layer (8) is connected with slow flow piece (9).

2. A flat evaporator circuit heat pipe as set forth in claim 1 wherein: the reflux heat pipes (2) are distributed in the flat evaporator (1) in an S shape, capillary tubes (3) are connected to the outside of the reflux heat pipes (2) at equal intervals, and the tail ends of the reflux heat pipes (2) are connected with gas pipelines (4).

3. A flat evaporator circuit heat pipe as set forth in claim 1 wherein: the external heat conducting fins (5) are of an M-shaped bending structure, and the external heat conducting fins (5) are distributed outside the reflow heat pipe (2) at equal intervals and are distributed symmetrically about the center of the reflow heat pipe (2).

4. A flat evaporator circuit heat pipe as set forth in claim 1 wherein: the inner heat conducting fins (7) are of V-shaped bending structures, and the inner heat conducting fins (7) are distributed in the reflow heat pipe (2) at equal intervals and are distributed symmetrically about the center of the reflow heat pipe (2).

5. A flat evaporator circuit heat pipe as set forth in claim 1 wherein: the liquid absorbing layer (8) is of a porous structure, and the holes inside the liquid absorbing layer are communicated with each other.

6. A flat evaporator circuit heat pipe as set forth in claim 1 wherein: the slow flow sheets (9) are spirally distributed in the liquid absorption layer (8), and the slow flow sheets (9) are symmetrically distributed about the center of the liquid absorption layer (8).