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Annular in-line pulsating heat pipe, heat dissipation testing device and vehicle motor cooling device

A technology of pulsating heat pipes and testing devices, applied in electromechanical devices, cooling/ventilation devices, electrical components, etc., to achieve high heat transfer efficiency, high anti-drying ability, and extended service life

Pending Publication Date: 2022-01-04
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional heat dissipation method has the above-mentioned disadvantages, and a more efficient and simple method is needed for motor heat dissipation

Method used

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  • Annular in-line pulsating heat pipe, heat dissipation testing device and vehicle motor cooling device
  • Annular in-line pulsating heat pipe, heat dissipation testing device and vehicle motor cooling device
  • Annular in-line pulsating heat pipe, heat dissipation testing device and vehicle motor cooling device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] refer to Figure 1-6 , an annular in-line pulsating heat pipe, comprising a plurality of pulsating heat pipes, a plurality of first elbows and a plurality of second elbows; the plurality of pulsating heat pipes are arranged in an annular column shape;

[0038] The first end of the pulsating heat pipe is a heating section, the middle section is an adiabatic section, and the second end is a cooling section;

[0039] The first end of the pulsating heat pipe communicates with the first end of the adjacent pulsating heat pipe through the first elbow; the second end of the pulsating heat pipe communicates with the second end of the adjacent pulsating heat pipe through the second elbow;

[0040] A plurality of first elbows and a plurality of second elbows are respectively arranged in a staggered manner, and are respectively connected with a plurality of pulsating heat pipes to form a closed-loop path.

[0041] In this embodiment, the annular in-line pulsating heat pipe also i...

Embodiment 2

[0045] refer to Figure 7-11 , a heat dissipation test device for an annular in-line pulsating heat pipe, including the annular in-line pulsating heat pipe 8 provided in Embodiment 1, the heat dissipation test device also includes a support frame, a heating unit, a cooling unit, a vacuum pumping liquid injection unit and Rotatable tilt stand.

[0046] The heating unit is arranged on the first elbow and is used for heating the heating section of the pulsating heat pipe.

[0047] In this embodiment, the heating unit includes a heating wire 18 evenly wound on the first elbow and a DC power supply, ceramic terminals are installed on the support frame, and the two ends of the heating wire 18 are respectively connected to two The connection holes are connected in series; the DC power supply is located outside the support frame, and the wires drawn from the rear end of the ceramic terminal are electrically connected to the DC power supply.

[0048] In this embodiment, the heating wir...

Embodiment 3

[0081] The difference between this embodiment and embodiment 2 is in the vacuum system.

[0082]In this embodiment, the outlet end of the third valve 12 is welded to the second four-way pipe 31, and the other two interfaces of the second four-way pipe 31 are respectively welded to the first valve 10 and the second valve 11, and the other interface is welded one more time. A copper pipe with an inner diameter of 6 mm and an outer diameter of 8 mm is welded to a fifth valve 30 ; wherein, the interface of the first valve 10 is connected to the Luer connector 29 , and the Luer connector 29 is connected to the syringe 9 .

[0083] The purpose of this embodiment is to complete the charging liquid of the non-azeotropic working medium, using a non-azeotropic immiscible mixed working medium composed of pure working medium HFE-7100, water and the two working mediums, wherein the mixing ratio of the working medium is: 1:2, 1:1, 2:1; liquid filling rate is 0%, 30%, 50%, 70%, 100%; inclina...

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Abstract

The invention discloses an annular in-line pulsating heat pipe, a heat dissipation testing device and a vehicle motor cooling device, and belongs to the technical field of motor heat dissipation. The annular in-line pulsating heat pipe comprises a plurality of pulsating heat pipes, a plurality of first elbows and a plurality of second elbows; the multiple pulsating heat pipes are arranged in an annular column shape; the first ends of the pulsating heat pipes are heating sections, the middle sections are heat insulation sections, and the second ends are cooling sections; the first end of each pulsating heat pipe is communicated with the first end of the adjacent pulsating heat pipe through a first elbow; the second end of each pulsating heat pipe is communicated with the second end of the adjacent pulsating heat pipe through a second elbow; and the multiple first elbows and the multiple second elbows are arranged in a staggered mode and communicate with the multiple pulsating heat pipes to form a closed loop channel. The heating pipe has the advantages of extremely high heat transfer efficiency, relatively high dry-out resistance, good environmental adaptability, simple structure and relatively low cost, heat dissipation is enhanced on the basis of not changing the overall space of the motor, and the service life of the motor is prolonged.

Description

technical field [0001] The invention belongs to the technical field of motor heat dissipation, and in particular relates to a novel ring-shaped in-line pulsating heat pipe, a heat dissipation test device and a vehicle motor cooling device. Background technique [0002] At present, in the actual operation and application process of the motor, solving the heat dissipation problem of the motor has always been a key task. With the development of motors in the direction of high power density, high overload capacity and miniaturization, the loss of the motor is large, the space for heat dissipation is small, and the local temperature of the motor is too high, which will cause demagnetization of the magnetic materials in the permanent magnet motor. The motor is subjected to greater thermal stress, causing deformation of the motor structure, which seriously affects the operating efficiency, reliability and life of the motor. Therefore, a high-efficiency heat dissipation system is a...

Claims

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Application Information

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IPC IPC(8): H02K9/19H02K9/22F28D15/02F28D15/06G01N25/20
CPCH02K9/225H02K9/19F28D15/0266F28D15/06G01N25/20
Inventor 张东侯宏艺徐宝睿安周建张瑞俞凯刘春阳吴江波侯刚李海霞姜钰湛李金平王林军
Owner LANZHOU UNIVERSITY OF TECHNOLOGY