CN111059938A - Coreless refrigerating and heating loop heat pipe - Google Patents

Abstract

The invention discloses a coreless refrigerating and heating loop heat pipe which comprises a heat exchanger 1, a communicating pipe, a heat exchanger 2, a working medium, a pumping and filling port, a heat exchange pipe inlet, a heat exchange pipe outlet and a liquid storage device, wherein the heat exchanger 1, the communicating pipe, the heat exchanger 2, the pumping and filling port, the heat exchange pipe outlet, the heat exchange pipe inlet and the liquid storage device are sequentially connected to form a closed loop. The invention can ensure that the loop heat pipe can refrigerate and heat, solves the problem that the concentrated cold source is dispersed to a large area through the heat pipe, and also solves the problem that the concentrated heat source is dispersed to a large area through the heat pipe.

Description

Coreless refrigerating and heating loop heat pipe

Technical Field

The invention relates to the technical field of thermal control, in particular to a coreless refrigerating and heating loop heat pipe.

Background

The loop heat pipe is a high-efficiency heat transfer device which drives a loop to operate by generating capillary suction force by a capillary core in an evaporator and transfers heat by utilizing the phase change of a working medium, and has the advantages of strong heat transfer capability, low thermal resistance, good isothermal property, high efficiency, no moving part, long distance and the like, thereby being an effective device for dissipating heat with high heat flow density.

Although loop heat pipes have many unique advantages, in certain applications, they suffer from the problem of being unable to both cool and heat the loop heat pipes, i.e., the problem of concentrating the heat (heat) source over a large area through the heat pipes.

Disclosure of Invention

In order to solve the problems, the invention provides a coreless refrigerating and heating loop heat pipe, which can ensure that a heat exchanger of the loop heat pipe has certain liquid, a working medium directionally circulates back according to a certain direction, and the working medium automatically returns after phase change, thereby solving the problems of refrigerating and heating the loop heat pipe, namely the problem that a concentrated cold (heat) source is dispersed to a large area through the heat pipe.

Has the advantages that:

1. during heating, the lowest part of the heat exchange pipeline composition plane is higher than the lowest part of the heat exchanger 1, and during refrigerating, the highest part of the heat exchange pipeline composition plane is lower than the highest part of theheat exchanger 2.

2. Theheat exchanger 2 is positioned above the heat exchanger 1 to form a certain height difference, and the inlet and the outlet of the heat exchange pipeline also form a certain height difference, so that the working medium in the loop heat pipe can only flow directionally.

Drawings

FIG. 1 is a schematic view of a coreless refrigeration and heating loop heat pipe structure of the present invention.

Wherein, each mark is respectively: 1-heat exchange tube outlet, 2-heat exchange tube, 3-liquid storage device, 4-heat exchange tube inlet, 5-heat exchanger 1, 6-working medium, 7-communicating tube, 8-pumping and filling port, 9-heat exchanger 2.

Detailed Description

The invention is described in detail below by way of example with reference to the accompanying drawings.

The invention provides a coreless refrigerating and heating loop heat pipe.

The loop heat pipe of the invention comprises the following components: the loop heat pipe mainly comprises: 1-heat exchange tube outlet, 2-heat exchange tube, 3-reservoir, 4-heat exchange tube inlet, 5-heat exchanger 1, 6-working medium, 7-communicating tube, 8-pumping and filling mouth, 9-heat exchanger 2; the 1-heat exchange tube outlet, the 2-heat exchange tube, the 3-reservoir, the 4-heat exchange tube inlet, the 5-heat exchangers 1, 7-communicating tube and the 9-heat exchanger 2 are connected in sequence to form a closed loop as shown in figure 1. The circulation running process is as follows: when the loop heat pipe is required to heat, an external heating source applies heat to the 5-heat exchanger 1, the working medium in the 5-heat exchanger 1 evaporates and absorbs the heat of the 5-heat exchanger 1, the generated high-temperature 6-working medium flows to the 1-heat exchange pipe outlet from the 7-communicating pipe and the 9-heat exchanger 2 and releases heat to the 2-heat exchange pipe to be condensed into liquid for heat sink, and the low-temperature 6-working medium returns to the 3-liquid storage device through the 4-heat exchange pipe inlet and maintains the supply to the 5-heat exchanger 1 through overflow. When the loop heat pipe is required to refrigerate, the externalcold source 2 applies cold energy to the 9-heat exchanger 2, the working medium in the 9-heat exchanger 2 condenses and absorbs the external cold energy, the generated low-temperature 6-working medium flows to the 3-liquid storage device from the 8-communicating pipe and the 5-heat exchanger 1, the cold energy is released from the inlet of the 4-heat exchange pipe to the 2-heat exchange pipe and is evaporated into gas, and the high-temperature 6-working medium returns to the 9-heat exchanger 2 through the outlet of the 1-heat exchange pipe to maintain the supply to the 9-heat exchanger 2.

The loop heat pipe is pretreated before being used, a heat exchange pipeline is heated through a heater, saturation temperature and pressure in the pipeline are improved, liquid in the pipeline section flows to a 3-liquid storage device, and pressure filling is carried out on communicating pipes of theheat exchangers 1, 2 and 7. When the 7-communicating pipe is filled with liquid, the gas-liquid distribution state with starting and running is achieved. The 2-heat exchanger 1 and the 9-heat exchanger 2 have a certain height difference, so that the liquid working medium can be effectively prevented from reversely flowing, the heat exchange area of the 2-heat exchanger 1 is prevented from being reduced, and the cold transfer performance caused by liquid backflow is prevented from being deteriorated. Meanwhile, the highest position of the plane formed by the 2-heat exchange pipelines is lower than the highest position of the 9-heat exchanger 2, so that the heat transfer performance deterioration caused by liquid backflow is prevented.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A coreless refrigerable and hot loop heat pipe comprises a heat exchanger 1, a communicating pipe, a heat exchanger 2, a working medium, a pumping and filling port, a heat exchange pipe inlet, a heat exchange pipe outlet and a liquid storage device, wherein the heat exchanger 1, the communicating pipe, the heat exchanger 2, the pumping and filling port, the heat exchange pipe outlet, the heat exchange pipe inlet and the liquid storage device are sequentially connected to form a closed loop; the invention can ensure that the loop heat pipe can refrigerate and heat, solves the problem that the concentrated cold source is dispersed to a large area through the heat exchange pipeline, and also solves the problem that the concentrated heat source is dispersed to a large area through the heat exchange pipeline; during heating, the lowest part of the plane formed by the heat exchange pipelines must be higher than the lowest part of the heat exchanger 1, and during refrigerating, the highest part of the plane formed by the heat exchange pipelines is lower than the highest part of the heat exchanger 2; the heat exchanger 2 is positioned above the heat exchanger 1 to form a certain height difference, and the inlet and the outlet of the heat exchange pipeline also form a certain height difference, so that the working medium in the loop heat pipe can only flow directionally.

2. The loop heat pipe of claim 1 wherein: the loop heat pipe heat exchanger 1, the communicating pipe, the heat exchanger 2, the pumping and filling port, the heat exchange pipe outlet, the heat exchange pipe inlet and the liquid storage device are sequentially connected to form a closed loop.

3. The loop heat pipe of claim 1 wherein: the closed loop heat pipe is filled with a certain amount of working medium with low boiling point.

4. The loop heat pipe of claim 1 wherein: the closed loop heat pipe is provided with a pumping and filling opening.

5. The loop heat pipe of claim 1 wherein: the heat exchanger and the heat exchange pipeline are made of high heat conduction metal materials.

6. The loop heat pipe of claim 1 wherein: the heat exchanger and the heat exchange pipeline can be fixed by welding, riveting, threaded connection and the like.

7. The loop heat pipe of claim 1 wherein: the heat exchanger can also be filled with metal wire mesh, sintered metal or sintered nonmetal, etc.

8. The loop heat pipe of claim 1 wherein: the heat exchanger adopts a pipe wall type heat exchange mode, and can also adopt an outer wall type, a tube type or a plate type heat exchange mode and the like.

9. The loop heat pipe of claim 1 wherein: the outlet end and the inlet end of the heat exchange pipeline have a certain height difference.

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