CN217465456U

CN217465456U - Heat exchanger

Info

Publication number: CN217465456U
Application number: CN202220440377.9U
Authority: CN
Inventors: 王锦虎; 张举飞; 荣彬彬; 方磊; 张冬林; 顾志鹏
Original assignee: Jiangsu Baode Heat Exchanger Equipment Co ltd
Current assignee: Jiangsu Baode Heat Exchanger Equipment Co ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-09-20
Anticipated expiration: 2032-03-01

Abstract

The utility model relates to a heat exchanger, including front end plate, back end plate, heat exchanger fin and welding annex, a plurality of heat exchanger fins stack up between front end plate and back end plate, regard as heat transfer flow layer between the adjacent heat exchanger fin, regard as heat transfer flow layer between front end plate and the heat exchanger fin adjacent to it, also regard as heat transfer flow layer between back end plate and the heat exchanger fin adjacent to it, the front end plate reserves out the concave surface region on its heat transfer surface, the concave surface region has a plurality of contact welding spots with adjacent heat exchanger fin; a convex surface area is reserved on the heat exchange surface of the rear end plate, the convex surface area and the adjacent heat exchange fins are provided with a plurality of contact welding points, and the welding accessories are welded on the outer side surfaces of the concave surface area and/or the convex surface area. The heat exchanger of the application can provide enough supporting strength for bolts welded on the front end plate and the rear end plate.

Description

Heat exchanger

Technical Field

The utility model relates to a plate heat exchanger, concretely relates to heat exchanger of welding bolt on front and back end plate.

Background

Also shaping out the ripple structure on the main part face with front end plate and rear end plate in order to reduce cost in the brazed plate heat exchanger trade, when the corrugated plate was made into to the current rear end plate and participated in the heat transfer, then the plate type of the front and rear end plate that has the ripple molding usually should not be too thick, otherwise influences the heat transfer coefficient of plate body, influences actual heat transfer effect, and if the plate type was too thick simultaneously, also do not benefit to the figurative shaping of ripple. Often for the convenience of installation, the front end plate or the back end plate of heat exchanger need the welding bolt, and the bolt position needs to bear certain structural stress, and long-term use easily takes place the crackle and lead to leaking in the welding bolt position.

Therefore, there is a need for an improved brazed plate heat exchanger in which the front and rear end plates also participate in heat exchange, and the structural strength of the bolt-welded portion of the front end plate or the rear end plate is improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the difficult problem of insufficient strength of the end plate when the auxiliary accessories such as bolts are welded on the end plate for the plate heat exchanger with the end plate participating in heat exchange.

The utility model provides a technical scheme that above-mentioned problem adopted does: a heat exchanger comprises a front end plate, a rear end plate, heat exchange sheets and welding accessories, wherein the heat exchange sheets are stacked between the front end plate and the rear end plate, a heat exchange flow layer is formed between every two adjacent heat exchange sheets, a heat exchange flow layer is formed between the front end plate and the heat exchange sheet adjacent to the front end plate, a heat exchange flow layer is formed between the rear end plate and the heat exchange sheet adjacent to the rear end plate, a concave surface area is reserved on the heat exchange surface of the front end plate, and the concave surface area and the adjacent heat exchange sheets are provided with a plurality of contact welding points; a convex surface area is reserved on the heat exchange surface of the rear end plate, the convex surface area and the adjacent heat exchange fins are provided with a plurality of contact welding points, and the welding accessories are welded on the outer side surfaces of the concave surface area and/or the convex surface area.

Preferably, the concave surface area covers the welding surface of the welding accessory on the front end plate, and the convex surface area covers the welding surface of the welding accessory on the rear end plate, so that the concave surface area can completely support the welding accessory on the front end plate, and the convex surface area can completely support the welding accessory on the rear end plate.

Preferably, the concave surface area and the convex surface area are circular, so that the forming is convenient, and the welding of a traditional welding accessory such as a bolt is matched better.

Preferably, the height of the concave surface region is consistent with the height of the corrugation on the heat exchange surface of the front end plate, and the height of the convex surface region is consistent with the height of the corrugation on the heat exchange surface of the rear end plate, so that the front end plate and the rear end plate participating in heat exchange are better brazed with the heat exchange plates.

Preferably, the concave and convex regions are symmetrical front to back.

Compared with the prior art, the heat exchanger has the advantages that the concave surface area is reserved on the front end plate of the heat exchanger, and a plurality of welding spots can be formed under the covering surface of the heat exchanger after the heat exchanger is laminated with the heat exchange sheets so as to ensure enough welding strength, so that enough strength support can be ensured in the concave surface area after welding of welding accessories (bolts); in a similar way, a convex surface area is reserved on the rear end plate, a plurality of welding spots are formed under the covering surface of the heat exchange plate lamination so as to ensure enough welding strength, and therefore enough strength support is provided for the convex surface area after welding of welding accessories (bolts) is ensured, and the strength of the heat exchanger is integrally improved.

Drawings

Fig. 1 is a perspective view of a heat exchanger according to an embodiment of the present invention;

FIG. 2 is a front view of a front end plate according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view AA in FIG. 2;

fig. 4 is a front view of a rear end plate according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view BB of FIG. 4;

FIG. 6 is a front view of a heat exchanger plate according to an embodiment of the present invention;

FIG. 7 is a perspective view of the front end plate after lamination with the plate;

fig. 8 is a perspective view of the back end plate and plate stack.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 8, the heat exchanger of the present embodiment includes a front end plate 1, a rear end plate 2, heat exchange fins 3, and bolts 4, wherein a plurality of heat exchange fins 3 are stacked between the front end plate 1 and the rear end plate 2, the front end plate 1, the plurality of heat exchange fins 3, and the rear end plate 2 are brazed into a whole, and the main body surfaces of the front end plate 1, the heat exchange fins 3, and the rear end plate 2 are all formed with a corrugated structure, so that they all have a heat exchange surface adopting a corrugated structure. The heat exchange flow layer is arranged between the adjacent heat exchange fins 3, the heat exchange flow layer is arranged between the front end plate 1 and the heat exchange fins 3 adjacent to the front end plate, and the heat exchange flow layer is also arranged between the rear end plate 2 and the heat exchange fins 3 adjacent to the rear end plate.

The bolts 4 are welded on the back surface of the rear end plate 2, in order to improve the strength of the welded part of the bolts 4, a concave surface area S1 is reserved on the heat exchange surface of the front end plate 1, and the concave surface area S1 and the corrugated structure on the adjacent heat exchange plates are provided with a plurality of contact welding points; the rear end plate 2 is reserved with a convex surface area S2 on the heat exchange surface, the convex surface area S2 and the corrugated structure on the adjacent heat exchange fins are provided with a plurality of contact welding points, the bolts 4 are welded on the outer side surface of the concave surface area S1 of the rear end plate 2, and the convex surface area S2 and the concave surface area S1 are symmetrical front and back. The convex surface area S2 covers the welding surface of the bolt on the rear end plate 2. The concave regions S1 and the convex regions S2 are circular, the height of the concave regions S1 is equal to the height of the corrugations on the front end plate 1, and the height of the convex regions S2 is equal to the height of the corrugations on the rear end plate 2.

The heat exchanger with the structure can ensure enough strength of the bolts welded on the back of the rear end plate.

Of course, the bolts are not limited to being welded to the outer side surface of the convex region of the rear end plate, and may be welded to the outer side surface of the concave region of the front end plate.

Although the preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a heat exchanger, includes front end plate, back end plate, heat exchanger fin and welding annex, and is a plurality of the heat exchanger fin is range upon range of between front end plate and back end plate, as heat transfer flow layer, its characterized in that between the adjacent heat exchanger fin: the heat exchange flow layer is arranged between the front end plate and the heat exchange plate adjacent to the front end plate, the heat exchange flow layer is also arranged between the rear end plate and the heat exchange plate adjacent to the rear end plate, a concave surface area is reserved on the heat exchange surface of the front end plate, and the concave surface area and the adjacent heat exchange plate are provided with a plurality of contact welding points; the rear end plate is provided with a convex surface area on a heat exchange surface, the convex surface area and the adjacent heat exchange fins are provided with a plurality of contact welding points, and the welding accessories are welded on the outer side surfaces of the concave surface area and/or the convex surface area.

2. The heat exchanger of claim 1, wherein: the concave surface area covers the welding surface of the welding accessory on the front end plate, and the convex surface area covers the welding surface of the welding accessory on the rear end plate.

3. The heat exchanger of claim 1, wherein: the concave surface area and the convex surface area are circular.

4. The heat exchanger of claim 1, wherein: the height of the concave surface area is consistent with the height of the corrugation on the heat exchange surface of the front end plate, and the height of the convex surface area is consistent with the height of the corrugation on the heat exchange surface of the rear end plate.

5. The heat exchanger of claim 1, wherein: the concave region and the convex region are symmetrical in front and back.