CN2426127Y

CN2426127Y - Honey comb heat conduction element structure

Info

Publication number: CN2426127Y
Application number: CN 00217504
Authority: CN
Inventors: 赖云来; 徐尧润
Original assignee: Ningbo Lehui Food Machinery Co ltd
Current assignee: Ningbo Lehui Food Machinery Co ltd
Priority date: 2000-05-02
Filing date: 2000-05-02
Publication date: 2001-04-04
Anticipated expiration: 2010-05-02

Abstract

The utility model relates to a honey comb heat transferring element structure which comprises two heat transferring plates, wherein, welding zones which are arranged on plate surfaces according to a certain geometric shape; other non-welding zone parts form convex arc shape. The utility model is characterized in that the welding zones are laser ring welds which form a closed geometric shape, the shape of the laser ring welds is a circle shape or a long ring shape or an ellipse shape, the laser ring welds can be arranged in a multi-line mutually staggered linear way or multi-line mutually parallel linear way, and additional laser direct weld seams can be also arranged among the lines of the laser ring welds. The utility model has the advantages of no heat affected zone, no welding residual stress and welding deformation, high welding strength and high quality. Besides, when the utility model is manufactured, a large-sized hydraulic press and a lapping machine are not required.

Description

Cellular heat transfer element structure

The utility model relates to and a kind ofly can be used as evaporimeter, condenser, heater and cooler or as reactor, the heating of agitator or the heat transfer element structure of cooling device, particularly a kind of heat transfer element structure with cellular section.

So-called cellular heat transfer element, promptly two heat transfer plates have the weld zone of arranging by certain geometrical shape on the plate face, and other non-weldering part is convex arc shaped, its inner chamber section is ups and downs cellular, outside wall surface is concavo-convex fluctuating shape, during use, flow in the cellular cavity of a kind of fluid between two blocks of plates, one other fluid flows outside plate.Because the cross section, fluid passage of inner chamber has the obstruction that the variation of width adds the weld zone; no phase change fluid in the chamber very easily forms turbulent flow; the boundary layer is brought in constant renewal in; and when for the steam condensation; condensation film can be brought in constant renewal in; and greatly improved the inner chamber individual heat transfer coefficient; it is little when big when simultaneously the rate of flow of fluid outside the chamber is also because of the concavo-convex undulations of outside wall surface; equally very easily form turbulent flow; and when flowing through wall for falling film; then liquid film very easily fluctuates, and the individual heat transfer coefficient of heat transfer element outside wall surface is also improved greatly, just under such heat transfer element inner chamber and outside wall surface comprehensive function; make cellular heat transfer element have very high heat transfer coefficient; heat transfer property is good, yet the weld zone is not that electric resistance welding is exactly an inert gas-shielded arc welding between plate of the prior art, and whole weld zone is all soldered; high temperature during welding can form the heat affected area; thereby stay welding residual stress and welding deformation, influence weld strength, can cause solder joint to break when serious.

The purpose of this utility model provides a kind of cellular heat transfer element structure that the heat affected area does not have welding residual stress and welding deformation of both not had with regard to being at above-mentioned prior art present situation.

The purpose of this utility model is achieved in that cellular heat transfer element structure comprises two heat transfer plates, has the weld zone of arranging by certain geometrical shape on the plate face, other weld zone part is convex arc shaped, it is characterized in that described weld zone is the laser circle weldering with closed geometric shape.

Compared with prior art, because the weld zone is the weldering of laser circle, thereby has not both had the heat affected area, does not also have welding residual stress and welding deformation, weld strength height, quality are good, simultaneously weld size and track can be selected arbitrarily, can make the fluid course in the honeycomb chamber have different forms by selecting different circle welding zone shapes, be fit to different flow, various flows to the chamber inner fluid, adopt structure of the present utility model in addition, easily manufactured, neither need large-scale hydraulic press, do not need veneer reeling machine yet.

Description of drawings:

Fig. 1 is the front view of the utility model embodiment one.

Fig. 2 is the A-A profile of Fig. 1.

Fig. 3 is the B-B profile of Fig. 1.

Fig. 4 is the front view of the utility model embodiment two.

Fig. 5 is the front view of the utility model embodiment three.

Fig. 6 is the front view of the utility model embodiment four.

Fig. 7 is the front view of the utility model embodiment five.

Fig. 8 is the profile of the utility model embodiment six.

Fig. 9 is the profile of the utility model embodiment seven.

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Fig. 1～Figure 3 shows that embodiment one of the present utility model, two block plates, 1,2 peripheries carry out laser welded seam weldering L, many laser circle welding zone M are arranged on the heat transfer element, laser circle weldering among the figure is positive ring shape, two boards pastes tightly mutually with planar fashion in the circle welding zone, non-circle welding zone N is convex, and all convex arc height are all identical.The adjacent turn weldering row that Fig. 1 cathetus is arranged is equidistant staggering mutually.Arrow is represented fluid flow direction among the figure.

Figure 4 shows that embodiment two of the present utility model, be with the difference of embodiment one that it is parallel and do not stagger that the laser circle welds each row, arrow is represented fluid flow direction among the figure.

Figure 5 shows that embodiment three of the present utility model, be with the difference of embodiment one, the weldering of laser circle also have laser straight weld O in the ranks, its objective is that the multipass that causes fluid in the cellular inner chamber flows, fluid flow direction as shown by arrows.

Figure 6 shows that embodiment four of the present utility model, be that the weldering of laser circle is long cast with the difference of embodiment one.

Figure 7 shows that embodiment five of the present utility model, be that the weldering of laser circle is for oval with the difference of embodiment one.

Described two block plates might not be uniform thickness, and at this moment, the non-circle welding zone N outside laser circle welding zone can be that thin steel plate 1 is the convex arc shape, and thicker steel plate 2 is flat shape, as shown in Figure 8.

The be close to face of described two block plates in circle welding zone M also is not limited to the plane, can be curved surface, as shown in Figure 9, a block plate 2 thicker curved surfaces that are evagination wherein, and another block plate 1 is thinner, have the arcuation projection, at this moment, the former can be the heat-transfer surface of equipment such as reactor, agitator, it in it vessel space, being equipped with working media, is refrigerant or heating agent in the cellular cavity, then is airspace outside the sheet metal.

Claims

1. a cellular heat transfer element structure comprises two heat transfer plates, has the weld zone of arranging by certain geometrical shape on the plate face, and other non-circle welding zone partly is convex arc shaped, it is characterized in that described weld zone is the laser circle weldering with closed geometric shape.

2. cellular heat transfer element structure as claimed in claim 1 is characterized in that described laser circle weldering is shaped as ring shape or long cast or ellipse.

3. cellular heat transfer element structure as claimed in claim 1 is characterized in that described two heat transfer plates all are convex arc shaped at non-circle welding zone.

4. cellular heat transfer element structure as claimed in claim 1 is characterized in that only have a heat transfer plate to be convex arc shaped at non-circle welding zone, and another piece heat transfer plate being the integral planar shape in described two heat transfer plates.

5. cellular heat transfer element structure as claimed in claim 1 is characterized in that only have a heat transfer plate to be convex arc shaped at non-circle welding zone, and another piece heat transfer plate being whole curved surface shape in described two heat transfer plates.

6. as the described cellular heat transfer element structure of arbitrary claim in the claim 1 to 5, it is characterized in that described laser circle weldering is interlaced arranged in a straight line of multirow.

7. cellular heat transfer element structure as claimed in claim 6 is characterized in that also having the laser straight weld in the ranks in the weldering of described laser circle.

8. as the described cellular heat transfer element structure of arbitrary claim in the claim 1 to 5, it is characterized in that described laser circle weldering is arranged in a straight line that multirow is parallel to each other.

9. cellular heat transfer element structure as claimed in claim 8 is characterized in that also having the laser straight weld in the ranks in the weldering of described laser circle.