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Miniaturized loop heat pipe

A technology of forming loops and heat pipes, which is applied in the field of heat transfer to achieve the effects of reducing costs, high condensation efficiency, and reducing the length and volume of pipelines

Active Publication Date: 2010-03-17
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this evaporator enables the loop heat pipe to have a large heat transfer capacity, this heat transfer capacity has exceeded the heat transfer requirements in small spacecraft or cryogenic optical systems

Method used

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  • Miniaturized loop heat pipe
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Embodiment Construction

[0022] The present invention is described in detail in conjunction with accompanying drawing now.

[0023] figure 1 As shown, the miniaturized loop heat pipe of the present invention includes an evaporator 1, a liquid pool 2, and a condenser 4. Using a liquid pipeline 3 and a gas pipeline 5, the above three components are connected in series to form a loop, wherein the evaporator 1 Connected with the liquid pool 2, the interior of the evaporator contains a main liquid suction core 1-3 and a secondary liquid suction core 1-4.

[0024] When the miniaturized loop heat pipe is working at normal temperature, the liquid working medium is directly poured into the liquid pool 2 . Due to the action of the capillary force of the main liquid-absorbing core 1-3, the inside of the main evaporator 1 is filled with liquid. Due to the effect of the circumferential threaded channel 1-3-1 on the outer surface of the main liquid-absorbing core 1-3, the distribution of the liquid will be very u...

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Abstract

The invention discloses a miniaturized loop heat pipe which comprises an evaporator, a liquid pool and a condenser, wherein the liquid pool and the condenser are connected with the evaporator into anintegral, and the evaporator, the liquid pool and the condenser are connected together through a fine thin wall pipe made of stainless steel to form a loop. When the miniaturized loop heat pipe is applied to the environment lower than 200K, an air reservoir which is connected to a steam pipeline is used for reducing the storage pressure of the miniaturized loop heat pipe in the normal temperatureenvironment. The invention is mainly characterized in that a liquid absorbing core in the evaporator is redesigned; a metal mesh is used as a secondary liquid absorbing core; and a circumferential thread channel is carved on the surface of the main liquid absorbing core to enable the liquid to be distributed uniformly, and an axial rectangular channel is carved to be used as a flow passage of steam. A new condenser is designed, and thread fins, rectangular fins or saw teeth are additionally arranged on the flow passage of working substances to be used as a condensation strengthening measure, thereby improving the condensation efficiency and reducing the size and the weight of the condenser.

Description

technical field [0001] The invention relates to heat transfer technology, in particular to a miniaturized loop heat pipe, which is applied to heat control and low-temperature optical systems of small spacecraft. Background technique [0002] Miniaturized loop heat pipe is one of the important trends in the future development of loop heat pipe. In the field of aerospace, miniaturized and efficient heat transfer components such as miniaturized loop heat pipes applied to microsatellites are one of the key technologies in the development of microsatellites. In addition, in the low-temperature optical system, in order to improve the integration of the low-temperature optical system and reduce the weight of the entire system, the miniaturized low-temperature loop heat pipe applied to the coupling of the refrigerator and the detector is also one of the key technologies. [0003] The main technical difficulty limiting the miniaturization of loop heat pipes is the design of highly e...

Claims

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Application Information

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IPC IPC(8): F28D15/02F28F21/08
CPCF28D15/0266
Inventor 杨帆董德平
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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