CN2164010Y

CN2164010Y - Total-counterflow heat-pipe heat exchanger

Info

Publication number: CN2164010Y
Application number: CN 93224384
Authority: CN
Inventors: 王焕然; 王迪生
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 1993-09-11
Filing date: 1993-09-11
Publication date: 1994-05-04
Anticipated expiration: 2003-09-11

Abstract

The utility model relates to a full counter current heat pipe heat exchanger, which comprises a pipe body, wherein, a partition board is arranged inside the pipe body in horizontal direction; the pipe body is divided into an upper pipe body and a lower pipe by the partition board; heat pipes are arranged on the partition board in a spiral form; a spiral director is respectively arranged inside the upper pipe body and the lower pipe body in spiral form direction. The utility model has the advantages of compact structure, high heat exchange efficiency, easy fabrication and convenient installation. The utility model can be applies to various pressures and mediums.

Description

Total-counterflow heat-pipe heat exchanger

The utility model relates to a kind of heat exchanger, particularly a kind of heat exchange of heat pipe.

At present, applied heat exchanger adopts rectangular case more in energy project and power engineering, make its manufacturing become comparatively complicated, the scope of application is restricted, in addition, be augmentation of heat transfer, generally all add fin, perhaps add straight shape deflection plate, improve the coefficient of heat transfer of low discharge fluid one side in the little side of flow at heat pipe, make a large amount of streams originally with between the low discharge fluid become cross-flow to arrange, thereby caused mean temperature difference decline between cold fluid and hot fluid, simultaneously, again because of straight shape deflection plate is set, and cause bigger local resistance loss, and the heat transfer of fluid self, the latter can cause the heat-transfer effect decline (list of references: (1) Zhuan Jun etc., heat pipe and heat exchange of heat pipe between cold fluid and hot fluid, publishing house of Shanghai Communications University, in June, 1989; (2) Ma Tongze, heat pipe, Science Press, in May, 1991).

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, a kind of full refluent heat heat exchange of heat pipe of cold fluid and hot fluid counter-flow arrangement is proposed, the advantage that has both heat exchange of heat pipe and shell-and-tube heat exchanger, has compact conformation, the heat exchange efficiency height, make simply, characteristics easy for installation can be applicable to various pressure, various medium.

The utility model comprises a cylindrical shell, the dividing plate that horizontal direction is arranged in the cylindrical shell separates cylindrical shell and is upper shell and lower shell, string has some heat pipes, heat pipe to become scroll to arrange on the dividing plate, along the air deflector that disposes a spiral form in scroll direction, the upper and lower cylindrical shell respectively.

Cold fluid and hot fluid flows by countercurrent direction in the air deflector of upper and lower cylindrical shell respectively, and the heat exchange between the cold and hot fluid realizes by heat pipe, thereby because the flow direction of cold and hot fluid has been realized full countercurrent heat-transfer fully on the contrary.

This shows, the utlity model has following effect:

(1) after the hot and cold stream side adds air deflector respectively, can realize the full counter-flow arrangement of cold fluid and hot fluid, improved the mean temperature difference between cold fluid and hot fluid.Improved the heat-transfer capability of heat exchanger, constant with thermic load, under the constant situation of heat transfer coefficient, can reduce the area of heat exchanger, therefore, can reduce heat exchanger volume, weight, reduction cost, save material.

(2) owing in full refluent heat heat exchange of heat pipe, adopted vortex filament shape flow pattern, the variation of the flow direction of fluid all is no more than 90 °, and therefore, its local resistance loss that flows is less than and adopts straight shape deflection plate.

(3) air deflector adopts non-gold copper-base alloy, conducts heat to reduce low discharge fluid self.

(4) because therefore flowing for vortex motion of fluid, improved the coefficient of heat transfer between fluid and heat pipe.

(5) the outer shell of crossing of full refluent heat heat exchange of heat pipe can adopt cylindrical housing, has both reduced manufacture difficulty, has widened the pressure limit of its application again.

Fig. 1 is a structure principle chart of the present utility model.

Fig. 2 is the A-A view.

Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are done detailed explanation.

With reference to Fig. 1, the utility model comprises a upper shell 1, lower shell 11, upper and lower cylindrical shell 1,11 is fixed on the two ends of the dividing plate 4 in the cylindrical shell by nut 7, flange 8,9, string has some heat pipes 3 on the dividing plate 4, become tightening seal between heat pipe 3 and the dividing plate 4, upper and lower two parts of heat pipe (3) dispose air deflector 2 on, air deflector 12 down respectively; Dispose adapter 5,6 and last air deflector 2 on the upper shell 1 and communicate, dispose

adapter

10,13 and following air deflector 12 on the lower shell 11 and communicate.

With reference to Fig. 2,3 one-tenth scrolls of heat pipe are arranged,

air deflector

2,12 one-tenth spiral forms, and the two ends of heat pipe 3 are configured in respectively in the scroll cavity of air deflector 2,12.Cold fluid is from taking over the scroll runner that enters 6 in the upper shell 1, horizontal cold junction of plunderring heat pipe absorbs the condensation heat release of working substance steam in the heat pipe, and fluid temperature (F.T.) is raise, discharge from taking over 5, hot fluid enters from taking over 13, by the scroll passage in the lower shell, and horizontal hot junction of plunderring heat pipe, make working medium boiling in the heat pipe, absorb the heat of hot fluid, the hot fluid temperature is descended, discharge from taking over 10.Working medium in the heat pipe constantly absorbs the heat of hot fluid, be transformed into steam by liquid, and then by cold fluid with the steam condensation, then, liquid is back to the hot junction again, so repeatedly, heat pipe is constantly passed to cold fluid with the heat of hot fluid, and cold fluid and hot fluid just in time is in the adverse current state, thereby makes hot-cold fluid be in the countercurrent heat-transfer state fully, therefore, improved the heat-transfer capability of heat exchange of heat pipe.

Claims

Full refluent heat heat exchange of heat pipe, comprise a cylindrical shell, horizontal direction is furnished with dividing plate in the cylindrical shell, dividing plate is divided into upper shell and lower shell with cylindrical shell, string has some heat pipes, feature of the present utility model to be on the dividing plate, and heat pipe becomes scroll to arrange, along the helical apparent bearing, upper and lower cylindrical shell disposes the air deflector of a spiral form respectively.