CN213902053U - Fin for heat exchanger of gas wall-mounted boiler - Google Patents

Abstract

The utility model discloses a fin for gas hanging stove heat exchanger, including the fin body, be equipped with several heat transfer tube hole on the fin body side by side, the both ends border of fin body turns over the book upwards and forms the hem, and vertical distribution has several bridge shape pattern to open the window between two adjacent heat transfer tube holes, and evenly distributed has the vortex arch between the adjacent bridge shape pattern is opened the window, top on the fin body between the adjacent heat transfer tube hole still is equipped with the vortex lug, the bellied cross-section of vortex is fan-shaped structure, and the vertical central line coincidence that the bellied vertical central line of vortex and several bridge shape pattern opened the window. The utility model discloses an ingenious design and reasonable arrangement vortex structure have effectively increased the surface coefficient of heat transfer of fin body, have improved heat exchange efficiency to under the condition that equal thermal efficiency is injectd, reduced the quantity that whole heat exchanger used the fin, thereby reduced heat exchanger's weight, reduced the cost of product.

Description

Fin for heat exchanger of gas wall-mounted boiler

Technical Field

The utility model belongs to the technical field of the gas hanging stove, concretely relates to fin for gas hanging stove heat exchanger.

Background

With the development of the market, the requirements for high performance and low cost of the gas hanging furnace heat exchanger are higher and higher, and the fin structure and area in the heat exchanger are key factors for determining the thermal efficiency of the device.

The fin structure of the existing heat exchanger is single, and the surface heat transfer coefficient is not high. Patent number "CN 210832556U" discloses a main heat exchanger fin structure of a wall-mounted gas boiler, which is provided with a plurality of bridge-shaped windows and flanged windows from bottom to top between adjacent heat exchange tube holes, and compared with the traditional fin structure, the fin structure improves the heat exchange efficiency; however, the bridge-type windows are vertically arranged and correspondingly communicated, and heat can be directly transferred upwards from the bottom bridge-type window to the top bridge-type window in the transfer process, so that the heat exchange efficiency is seriously influenced. In order to further improve the heat exchange efficiency of fin, the event provides this application.

Disclosure of Invention

The utility model aims to solve the technical problem that just not enough to above-mentioned prior art provides a fin for gas hanging stove heat exchanger, and it can effectively increase the heat transfer coefficient on fin surface to improve monolithic fin's heat exchange rate, can reduce fin use quantity under the condition that equal thermal efficiency is injectd, effectively reduced heat exchanger's cost.

The utility model adopts the technical proposal that: the utility model provides a fin for gas hanging stove heat exchanger, includes the fin body, be equipped with several heat transfer tube hole on the fin body side by side, the both ends border of fin body turns over upwards and turns over a formation hem, and vertical distribution has several bridge shape pattern to open a window between two adjacent heat transfer tube holes, and evenly distributed has the vortex arch between the adjacent bridge shape pattern to open a window, top on the fin body between the adjacent heat transfer tube hole still is equipped with the vortex lug, the cross-section of vortex lug is fan-shaped structure, and the vertical central line of vortex lug and the vertical central line coincidence of several bridge shape pattern windowing.

Preferably, the horizontal widths of the plurality of bridge-type fenestrations increase from bottom to top.

Preferably, the number of turbulator protrusions between adjacent bridge-style fenestrations increases as the horizontal width of the bridge-style fenestrations increases.

Preferably, the turbulence protrusions are positioned on a vertical central line of the bridge-shaped window or symmetrically arranged on the vertical central line of the bridge-shaped window.

Preferably, a turbulence protrusion is further arranged between the turbulence protrusion and the bridge-shaped window.

Preferably, the folding edges at two ends of the fin body are perpendicular to the fin body, and the joints of the folding edges and the fin body adopt circular arc transition.

The beneficial effects of the utility model reside in that:

(1) by arranging the profiling structures with the plurality of bridge-shaped windowing tearing openings and the plurality of turbulence protrusions, the contact time of heat and the fins is longer, the surface heat transfer coefficient of the fin body is effectively increased, and the heat transfer efficiency of the fin body is improved;

(2) by additionally arranging a plurality of bridge-shaped windows, the weight of the fin body is reduced, and the manufacturing cost is greatly saved;

(3) the turbulent flow effect on high-temperature fuel gas is further improved by arranging the turbulent flow convex blocks;

(4) the turbulence lug, the window is opened to the bridge shape style and the turbulence is protruding to align in vertical direction, when flowing through to high temperature flue gas, is carried out the vortex many times in same vertical direction, has improved the holistic vortex efficiency of fin, has increased the surface heat transfer coefficient of fin promptly, has improved the efficiency of heat transfer.

The utility model discloses an ingenious design and reasonable arrangement vortex structure have effectively increased the surface coefficient of heat transfer of fin body, have improved heat exchange efficiency to under the condition that equal thermal efficiency is injectd, reduced the quantity that whole heat exchanger used the fin, thereby reduced heat exchanger's weight, reduced the cost of product.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a fin body; 2. a heat exchange tube hole; 3. folding edges; 4. windowing in a bridge style; 5. a turbulent flow bulge; 6. a turbulence projection.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Examples

As shown in fig. 1, the fin for a heat exchanger of a gas wall-hanging furnace provided in this embodiment includes a fin body 1, a plurality of heat exchange tube holes 2 are arranged side by side on the fin body 1, both end edges of the fin body 1 are turned upwards to form folded edges 3, the folded edges 3 are perpendicular to the fin body 1, a connection portion between the folded edges 3 and the fin body 1 adopts circular arc transition, the fin body 1 and the folded edges 3 are integrally formed through a mold, a plurality of bridge-shaped windows 4 are arranged vertically between two adjacent heat exchange tube holes 2 on the fin body 1, the bridge-shaped windows 4 are arch bridge-shaped, in this embodiment, three bridge-shaped windows 4 are adopted, vertical central lines of the three bridge-shaped windows 4 coincide, and the three bridge-shaped windows 4 are from bottom to top, horizontal widths thereof are sequentially increased, a turbulence protrusion 5 is arranged between adjacent bridge-shaped windows 4, the turbulence protrusion 5 is increased along with the widening of the bridge-shaped windows 4 adjacent to the bottom thereof, in the embodiment, three bridge-shaped windows 4 are arranged, a turbulence protrusion 5 is arranged between the bottom bridge-shaped window 4 and the middle bridge-shaped window 4, the turbulence protrusion 5 is positioned on the vertical central line of the bridge-shaped window 4, two turbulence protrusions 5 are arranged between the middle bridge-shaped window 4 and the top bridge-shaped window 4, the two turbulence protrusions 5 are positioned on two sides of the vertical central line of the bridge-shaped window 4 and are symmetrical with the vertical central line of the bridge-shaped window 4, a turbulence lug 6 is further arranged on the top between the adjacent heat exchange tube holes 2 on the fin body 1, the cross section of the turbulence lug 6 is of a fan-shaped structure, the minor arc side of the turbulence lug 6 is superposed with the top of the fin body 1, the major arc side of the turbulence lug 6 is positioned above the top bridge-shaped window 4, and uniformly distributed turbulence protrusions 5 are further arranged between the turbulence lug 6 and the top bridge-shaped window 4, the vertical central line of the turbulence lug 6 is coincident with the vertical central line of the bridge-shaped window 4.

During the use, high temperature gas flue gas flows through between two adjacent fin bodies 11, bridge shape style windowing 4 plays a vortex effect to high temperature flue gas, simultaneously high temperature flue gas is after 4 vortex of bridge shape style windowing and flows through from the window department of bridge shape style windowing 4, the cooperation sets up the vortex arch 5 between bridge shape style windowing 4 this moment, vortex once more to high temperature flue gas, greatly increased the time that high temperature flue gas flows through on fin body 11 surface like this, fin body 11's surface coefficient of heat transfer has been increased promptly, the efficiency of conducting heat has been improved.

The turbulence protrusions 5 may be in the shape of one or more of a sphere, a hemisphere, a square, a rectangle, and a sector, but are not limited to these shapes.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a fin for gas hanging stove heat exchanger, includes fin body (1), be equipped with several heat transfer tube hole (2) on fin body (1) side by side, the both ends border of fin body (1) is turned over upwards and is rolled over and form hem (3), its characterized in that: a plurality of bridge-shaped windows (4) are vertically distributed between every two adjacent heat exchange tube holes (2), turbulence protrusions (5) are uniformly distributed between every two adjacent bridge-shaped windows (4), turbulence lugs (6) are further arranged at the tops of the fin bodies (1) between every two adjacent heat exchange tube holes (2), the cross sections of the turbulence lugs (6) are of fan-shaped structures, and the vertical central lines of the turbulence lugs (6) and the vertical central lines of the plurality of bridge-shaped windows (4) coincide.

2. The fin for a heat exchanger of a gas wall hanging stove according to claim 1, characterized in that: the horizontal widths of the plurality of bridge-shaped windows (4) are sequentially increased from bottom to top.

3. The fin for a heat exchanger of a gas wall hanging stove according to claim 2, characterized in that: the number of the turbulence protrusions (5) between adjacent bridge-shaped windows (4) increases as the horizontal width of the bridge-shaped windows (4) increases.

4. The fin for a heat exchanger of a gas wall hanging stove according to claim 3, characterized in that: the turbulence protrusions (5) are positioned on the vertical central line of the bridge-shaped window (4) or symmetrically arranged on the vertical central line of the bridge-shaped window (4).

5. The fin for a heat exchanger of a gas wall hanging stove according to claim 1, characterized in that: and a turbulence protrusion (5) is also arranged between the turbulence protrusion (6) and the bridge-shaped window (4).

6. The fin for a heat exchanger of a gas wall hanging stove according to claim 1, characterized in that: the hem (3) at the two ends of the fin body (1) is perpendicular to the fin body (1), and the joint of the hem (3) and the fin body (1) adopts circular arc transition.

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