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Controllable microchannel heat pipe heat transfer device

A micro-channel heat pipe and heat pipe technology, applied in indirect heat exchangers, lighting and heating equipment, etc., can solve the problems of high heat transfer thermal resistance, large space occupation, low heat transfer efficiency, etc., and achieve broad market prospects and efficient utilization. Space, application environment friendly effect

Pending Publication Date: 2020-05-22
青岛科思德节能设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The flow of refrigerant working fluid in the heat exchange tube is mostly in a laminar flow state, the temperature difference between the tube wall and the tube center is large, and the heat exchange efficiency is low
And the contact mode between the heat exchange tube and the fin is the expansion joint form, that is, the heat exchange tube of the fin is perforated and formed into a flange. After inserting the heat exchange tube into the hole of the heat exchange tube, the heat exchange tube is expanded. Force connection and fastening fins, this connection method has high heat transfer resistance and low heat transfer efficiency
The above reasons cause the heat exchange efficiency of the heat exchanger to be low, resulting in a low overall heat exchange efficiency of the heat pipe. In order to achieve a certain amount of heat exchange, the size, quality, and heat exchange area of ​​the heat pipe heat exchanger must be relatively large.
Takes up a lot of space and is not easy to install

Method used

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  • Controllable microchannel heat pipe heat transfer device
  • Controllable microchannel heat pipe heat transfer device
  • Controllable microchannel heat pipe heat transfer device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A controllable microchannel heat pipe heat transfer device involved in this embodiment is realized through the following technical scheme:

[0030] A air duct 2 and B air duct 31 are arranged in parallel, but the airflow direction is opposite, that is, the left side of A air duct 2 is the air intake end of airflow A1, and the left end of B air duct 31 is the exhaust end of airflow B30; In the passage, there are first-stage microchannel heat pipe heat exchanger 8 in air passage A and i-stage microchannel heat pipe heat exchanger 11 in air passage A, wherein i is an integer greater than or equal to 1. The left and right sides of the heat pipe heat exchanger 8 are provided with the front temperature sensor 7 of the first stage microchannel heat pipe heat exchanger of the A air duct and the rear sensor 9 of the first stage microchannel heat pipe heat exchanger of the A air duct for detection. The left and right sides of the i-th stage microchannel heat pipe heat exchanger 1...

Embodiment 2

[0037] like figure 1 As shown, this embodiment illustrates the structure and working process of the first embodiment, its main components are airflow A1, air duct A first-stage microchannel heat pipe heat exchanger front temperature sensor 7, air duct A first-stage microchannel heat pipe Heat exchanger 8, rear sensor of the first-stage microchannel heat pipe heat exchanger in air duct A 9, front temperature sensor 10 of the i-level micro-channel heat pipe heat exchanger in air duct A, and i-level microchannel heat pipe heat exchanger in air duct A 11. Temperature sensor behind the i-stage microchannel heat pipe heat exchanger of air duct A 12, first-stage heat pipe system reversing valve group 14, first-stage heat pipe system working fluid circulation pump 15, i-stage heat pipe system reversing valve group 18. Working fluid circulation pump of the i-th heat pipe system 19. PLC control cabinet 23. Temperature sensor in front of the first-stage microchannel heat pipe heat exchan...

Embodiment 3

[0041] like Figure 4 As shown, it is the structure and working process of the second embodiment of the present invention. Its main components are completely the same as in Embodiment 1 except for the reversing valve group. In Embodiment 1, the heat removal direction of the heat pipe is controlled by the reversing valve group. Control, embodiment 2 uses a four-way reversing valve instead of a reversing valve group to control the flow direction of the liquid-phase refrigerant, thereby controlling the direction of heat transfer.

[0042] The starting and running process of the system device is exactly the same as that of Embodiment 1.

[0043] The control process of the system device is exactly the same as that of Embodiment 1.

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Abstract

The invention relates to the technical field of heat pipe heat exchangers, and relates to a controllable microchannel heat pipe heat transfer device. An A air duct and a B air duct are arranged in parallel, but air flow directions are opposite, that is, the left side of the A air duct is the inlet end of air flow A, and the left end of the B air duct is the exhaust end of air flow B; and an A airduct first stage microchannel heat pipe heat exchanger and an A air duct i stage microchannel heat pipe heat exchanger are arranged in sequence in the A air duct, and i is an integer greater than or equal to 1; and the left and right sides of the A air duct first stage microchannel heat pipe heat exchanger are provided with an A air duct first stage microchannel heat pipe heat exchanger front temperature sensor and an A air duct first stage microchannel heat pipe heat exchanger behind temperature sensor used for testing purposes. Compared with the prior art, the controllable microchannel heatpipe heat transfer device can realize efficient utilization of space, larger heat exchange area per unit volume, turbulent flow pattern of liquid phase refrigerant in a heat exchange flat tube and more intense evaporation, and the heat exchange efficiency is higher; and the application environment is friendly, and market prospects are broad.

Description

Technical field: [0001] The invention relates to the technical field of heat pipe heat exchangers, in particular to a controllable microchannel heat pipe heat transfer device, in particular to a controllable microchannel heat pipe heat transfer device. [0002] technical background: [0003] At present, many heat pipe application forms have evolved from a single heat pipe to a combination of multiple heat pipes. The integral heat pipe has evolved into a separate heat pipe. In the separate heat pipe, a heat exchanger is used to replace the evaporation end and condensation end of the heat pipe. [0004] The related heat exchanger is composed of heat exchange tubes and fins. The refrigerant phase changes in the heat exchange tubes to exchange heat with the heat exchange tubes. The heat exchange tubes and fins are in contact with each other for heat transfer. exchange. [0005] The flow of refrigerant working fluid in the heat exchange tube is mostly in a laminar flow state, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/02F28D15/06
CPCF28D15/0266F28D15/06F28D2015/0225
Inventor 谭中正
Owner 青岛科思德节能设备有限公司
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