Gravity assisted heat pipe with multi-stage evaporation sections for refrigerating equipment with super-concentrated cooling capacity

A technology of gravity heat pipes and refrigeration equipment, which is applied in lighting and heating equipment, indirect heat exchangers, etc., can solve the problems of heat transfer efficiency decline, gravity heat pipe stop working, and reduce the driving force of liquid working medium flow in heat pipes, etc., to achieve Improve the effect of using the angle range

Pending Publication Date: 2021-08-06
QINGDAO AUCMA ULTRA LOW TEMPERATURE FREEZING MACHINES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gravity heat pipes currently used in the market are all single-circuit heat pipes. When this single-circuit heat pipe is used, if the gravity heat pipe deviates to the harmful direction, that is, the height difference between the condensation section and the evaporation section will decrease, thereby reducing the liquid work in the heat pipe. The driving force of mass flow will lead to a decrease in heat transfer efficiency, and even when the height of the condensation section and the evaporation section are the same, the gravity heat pipe will stop working, which will affect the use of refrigeration equipment

Method used

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  • Gravity assisted heat pipe with multi-stage evaporation sections for refrigerating equipment with super-concentrated cooling capacity
  • Gravity assisted heat pipe with multi-stage evaporation sections for refrigerating equipment with super-concentrated cooling capacity
  • Gravity assisted heat pipe with multi-stage evaporation sections for refrigerating equipment with super-concentrated cooling capacity

Examples

Experimental program
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Effect test

Embodiment 1

[0026] refer to Figure 1-3 , this embodiment provides a gravity heat pipe with multi-stage evaporating sections for super-centralized cooling equipment. The gravity heat pipe 2 is installed in a low-temperature storage box 1 with a Stirling refrigerator as a cold source. The preservation box 1 includes a box shell and an inner container arranged inside the box shell, and a heat insulating layer is arranged between the box shell and the inner container. In this embodiment, the ring-shaped gravity heat pipe 2 is arranged around the inner tank of the cryogenic storage box 1. The gravity heat pipe 2 includes the main evaporation section 3, the heat insulation section 4 and the condensation section 5, and the heat insulation section 4 is located between the main evaporation section 3 and the condensation section 5. Among them, the main evaporation section 3 is in contact with the inner tank of the low temperature storage box 1, the heat insulation section 4 is arranged in the heat...

Embodiment 2

[0036] refer to Figure 4-6 , the main difference between this embodiment and Embodiment 1 is that: in this embodiment, the gravity heat pipe 2 adopts a ring-shaped gravity heat pipe 2, and the primary standby evaporation tube 6 and the secondary standby evaporation tube 7 are arranged below the main evaporation section 3 of the gravity heat pipe 2 , the primary standby evaporator tube 6 and the secondary standby evaporator tube 7 are arranged obliquely relative to the horizontal plane.

[0037] In this embodiment, the included angle between the gravity heat pipe 2 and the horizontal plane is 25°, the inclination angle of the top nozzle of the liquid blocking section 9 is 30°, and the included angle between the primary standby evaporator tube 6 and the secondary standby evaporator tube 7 and the horizontal plane is 40°.

[0038] In this embodiment, the inclination angle of the top nozzle of the liquid blocking section 9 is relatively large, the end of the liquid blocking sect...

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Abstract

The invention discloses a gravity assisted heat pipe with multi-stage evaporation sections for refrigerating equipment with super-concentrated cooling capacity. The gravity assisted heat pipe is obliquely arranged relative to the horizontal plane and comprises a main evaporation section and a condensation section, wherein the main evaporation section is lower than the condensation section; multiple stages of standby evaporation pipes are further arranged below the main evaporation section of the gravity assisted heat pipe and communicate with the main evaporation section of the gravity assisted heat pipe; the tops of the standby evaporation pipes are higher than the inner wall of the main evaporation section, and a liquid blocking section is formed in the main evaporation section. The multiple stages of standby evaporation pipes are arranged below the gravity assisted heat pipe, so that the effective use angle range of the refrigerating equipment can be enlarged, and the circumstance that the heat transfer efficiency is reduced when the refrigerating equipment deflects, namely the gravity assisted heat pipe deflects in the harmful direction is prevented.

Description

technical field [0001] The invention relates to the technical field of refrigerating equipment, in particular to a gravity heat pipe with multi-stage evaporating sections for super-concentrated refrigerating equipment with cooling capacity. Background technique [0002] Due to its low cooling temperature and wide range, Stirling refrigerators are used more and more widely, especially the low-temperature storage box composed of Stirling refrigerators as cold sources and heat preservation boxes is becoming more and more popular in the market. Pay attention to. The remarkable feature of the Stirling refrigerator is that its cooling capacity is concentrated at the cold end of the refrigerator, and its heat dissipation area is relatively small compared with the evaporation pipeline used by the vapor compression refrigerator, so the traditional convective heat exchange method is used to When the concentrated cold is released, its efficiency is very low. In addition, semiconductor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/02
CPCF28D15/025F28D2015/0216
Inventor 赵冲李培荣单波白文涛屈金祥隋刘丽杨传志
Owner QINGDAO AUCMA ULTRA LOW TEMPERATURE FREEZING MACHINES
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