CN210070237U - Heat absorbing sheet of heat exchanger of stainless steel wall-hanging stove - Google Patents
Heat absorbing sheet of heat exchanger of stainless steel wall-hanging stove Download PDFInfo
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- CN210070237U CN210070237U CN201920680209.5U CN201920680209U CN210070237U CN 210070237 U CN210070237 U CN 210070237U CN 201920680209 U CN201920680209 U CN 201920680209U CN 210070237 U CN210070237 U CN 210070237U
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Abstract
The utility model provides a stainless steel hanging stove heat exchanger's heat absorbing sheet belongs to mechanical technical field. The heat absorbing sheet solves the problems that the structure of the heat absorbing sheet of the existing heat exchanger is complex and the heat exchange is not uniform enough. The heat absorbing sheet of the stainless steel wall-hanging furnace heat exchanger comprises a sheet body, wherein a row of uniformly arranged mounting holes are formed in the body, a bent part bent towards one side is arranged at the edge of each mounting hole and is attached to the outer side wall of a heat absorbing pipe, the height of the bent part is 0.92-1.25mm, and the distance from the lower end of each mounting hole to the edge of the lower end of the body is 1.22-1.58 mm. This stainless steel hanging stove heat exchanger's heat absorbing sheet has the better advantage of the comparatively firm reliable of structure of heat absorption effect simultaneously.
Description
Technical Field
The utility model belongs to the technical field of machinery, a heat absorbing sheet, especially a stainless steel hanging stove heat exchanger's heat absorbing sheet is related to.
Background
The wall-hanging stove water heater has the working principle of heat energy exchange, a burner in the wall-hanging stove water heater burns to generate hot air, then the heat exchanger transfers the heat energy from the hot air into water, and finally hot water is generated. Most of the heat exchangers commonly used at present are made of oxygen-free copper, which has excellent heat-conducting property. However, the oxygen-free copper heat exchanger is poor in corrosion resistance, so that the oxygen-free copper heat exchanger is easily corroded by high-corrosivity condensed water generated in working, and the service life of the oxygen-free copper heat exchanger is influenced. In order to prolong the service life of the wall-mounted furnace, a heat exchanger made of a novel material is designed, and stainless steel with good corrosion resistance is used as the heat exchanger made of the material. In order to overcome the defect of poor heat conductivity of stainless steel, innovation is made on the structure of the heat absorbing sheet. The long flat tube replaces an elliptical tube commonly used by a heat absorption sheet of an oxygen-free copper heat exchanger, and the heat absorption efficiency is structurally improved by utilizing the characteristic that stainless steel materials have higher mechanical strength than copper. On the combustion side of the heat absorbing sheet, short-distance heat absorption is adopted, the thermal resistance of a high-temperature heat absorption area is reduced, the local overhigh temperature of the heat absorbing sheet is avoided, and the manufacturability is ensured by the structure. And a short-distance matching and separating method is adopted at the welding position of the heat absorbing sheet and the heat absorbing pipe. On the premise of not influencing the heat transfer of the heat absorbing sheet, the direct heat absorbing capacity of the heat absorbing pipe is improved. Therefore, the heat exchange efficiency of the wall-hanging stove water heater is one of the important technical indexes.
In order to improve the heat exchange efficiency of the wall-hanging stove water heater, in the prior art, a heat absorbing sheet is generally arranged on a heat exchanger so as to improve the absorption of the heat exchanger to the heat energy in the hot air. However, the heat absorbing sheet in the prior art has the problem of uneven heating. Due to the limitation of the installation position of the heat absorbing sheet, one part of the heat absorbing sheet is close to the heat source, and the other part of the heat absorbing sheet is far away from the heat source. According to the flowing rule of hot air, the bottom of the heat absorbing sheet close to the heat source is heated more fully than the top of the heat absorbing sheet far away from the heat source. Especially, the heat absorbing sheet on the back of the water pipe is blocked by the water pipe, so that the heat absorbing sheet is not easy to absorb heat, and the heat exchange efficiency is low. The uneven heating phenomenon of the heat absorbing sheets reduces the heat efficiency of the water heater. Therefore, how to heat all parts of the heat absorbing sheet uniformly and improve the heat exchange efficiency of the heat absorbing sheet so as to improve the heat exchange efficiency of the whole gas water heater is a target which is pursued by various large gas water heater manufacturers for a long time.
For example, a heat absorbing sheet for a heat exchanger (application number: 200720076803.O) disclosed in chinese patent document comprises a base plate, at least two water discharge pipe holes distributed up and down are formed on the base plate, a tubular convex hole is formed on the base plate, the tubular convex hole is located on the upper side of the water discharge pipe hole on the lower side, and the inside of the tubular convex hole is penetrated up and down to form a flue gas channel. The tubular convex holes are positioned at two sides of the water pipe hole at the upper side. The plurality of tubular convex holes are distributed in a row, and the smoke passages of the plurality of tubular convex holes distributed in the row are continuously communicated. The tubular convex hole is a local rupture bulge on the base plate. But the heat absorbing sheet has a complicated structure and the heat exchange is not uniform enough.
Disclosure of Invention
The utility model aims at solving the problems in the prior art, and provides a heat absorption sheet of a stainless steel wall-mounted boiler heat exchanger with good heat absorption effect and firm and reliable structure.
The purpose of the utility model can be realized by the following technical proposal: the heat absorbing sheet of the stainless steel wall-hanging furnace heat exchanger comprises a sheet-shaped body, wherein a row of uniformly arranged mounting holes are formed in the body, and the heat absorbing sheet is characterized in that a bending part bent towards one side is arranged at the edge of the mounting hole and is attached to the outer side wall of a heat absorbing pipe, the height of the bending part is 0.92-1.25mm, and the distance from the lower end of the mounting hole to the lower end edge of the body is 1.22-1.58 mm.
According to the existing production technical conditions, through repeated calculation and comprehensive tests for many times, the heat exchanger of the stainless steel wall-hanging furnace comprises a heat exchange tube and a heat absorbing sheet, the heat exchange tube penetrates through a mounting hole and is welded with a body, the height of a bending part is 0.92-1.25mm, the welding strength of the heat exchange tube and the body is high, the heat exchange tube is not easy to damage, meanwhile, the situation that the bending part blocks hot air to exchange heat with the part of the heat exchange tube, which is connected with the bending part, can be effectively avoided, the heat exchange efficiency is improved, the distance between the lower end of the mounting hole and the lower end edge of the body is 1.22-1.58mm, the overhigh temperature of the heat absorbing sheet in a smoke high-temperature area.
In the heat absorbing sheet of the heat exchanger of the stainless steel wall-hanging furnace, the distance between the side edge of the mounting hole and the corresponding edge of the body is 0.92-1.35 mm. By adopting the arrangement, the temperature of the heat absorbing sheet in the high-temperature area of the flue gas can be prevented from being too high, and the processing qualification rate is ensured under the existing production process conditions.
In the heat absorbing sheet of the heat exchanger of the stainless steel wall-hanging furnace, the profile of the lower end edge of the body is similar to the profile of the lower side of the mounting hole. By adopting the arrangement, the body has the advantages of reasonable structure and attractive appearance.
In the heat absorbing sheet of the heat exchanger of the stainless steel wall-hanging furnace, the mounting hole is a vertically arranged flat hole, the mounting hole is arranged in the vertical direction, and the ratio of the width to the length of the mounting hole is 1: 3.5 for 1: 7.5. the mounting hole and heat exchange pipe phase-match adopt the mounting hole of above-mentioned size proportion, have that heat exchange area is great, have higher intensity simultaneously, have the better and longer advantage of life of heat exchange effect.
In the heat absorbing sheet of the heat exchanger of the stainless steel wall-hanging furnace, the upper end of the body is wavy, and the wave troughs of the body correspond to the upper ends of the mounting holes one by one. By adopting the arrangement, the heat exchanger has the advantages of good heat exchange effect, attractive appearance and reasonable structure.
In the heat absorbing sheet of the heat exchanger of the stainless steel wall-hanging furnace, the two sides of the upper end of the body are provided with bent flow blocking parts, and the flow blocking parts are bent towards the inner side of the body. The upper end of body is equipped with foretell fender stream portion, is convenient for block steam, has improved heat exchange efficiency.
Compared with the prior art, the heat absorbing sheet of the heat exchanger of the stainless steel wall-hanging furnace has the following advantages:
1. the height of the bending part is 0.92-1.25mm, so that the welding strength of the heat exchange tube and the body is high, the heat exchange tube is not easy to damage, meanwhile, the heat exchange between hot air blocked by the bending part and the part of the heat exchange tube, which is connected with the bending part, can be effectively avoided, and the heat exchange efficiency is improved;
2. the distance between the lower end of the mounting hole and the lower end edge of the body is 1.22-1.58mm, so that the overhigh temperature of the heat absorbing sheet in a high-temperature area of the flue gas can be avoided, and the processing qualified rate can be conveniently ensured;
3. the ratio of the width to the length of the mounting hole is 1: 3.5 for 1: 7.5. the mounting holes are matched with the heat exchange tubes, so that the heat exchange device has the advantages of large heat exchange area, high strength, good heat exchange effect and long service life;
4. the upper end both sides of body have the fender stream portion of buckling just fender stream portion buckle toward the inboard of body, be convenient for block steam, improved heat exchange efficiency.
Drawings
Fig. 1 is a schematic front view of a heat absorbing plate of the heat exchanger of the stainless steel wall-hanging stove.
Fig. 2 is a schematic sectional view a-a of fig. 1.
Fig. 3 is a schematic perspective view of the heat absorbing sheet of the heat exchanger of the stainless steel wall-hanging stove.
In the figure, 1, a body; 2. mounting holes; 3. a bending part; 4. a flow blocking part.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 3, the heat absorbing sheet of the heat exchanger of the stainless steel wall-hanging furnace comprises a sheet-shaped body 1 made of stainless steel material, and a row of uniformly arranged mounting holes 2 are arranged on the body 1, wherein the edge of the mounting hole 2 is provided with a bending portion 3 bent toward one side and the bending portion 3 is used for the outer side wall of the heat absorbing pipe to lean against, the height a of the bending portion 3 is 0.92-1.25mm, and the distance b from the lower end of the mounting hole 2 to the lower end edge of the body 1 is 1.22-1.58 mm.
The upper end of the body 1 is wavy, the wave troughs of the body 1 correspond to the upper ends of the mounting holes 2 one by one, the lower end edge outline of the body 1 is similar to the lower side outline of the mounting holes 2, the distance c from the side edge of the mounting holes 2 to the corresponding edge of the body 1 is 0.92-1.35mm, the temperature of the heat absorbing sheet in a flue gas high-temperature area can be prevented from being too high, and the processing qualification rate is guaranteed under the existing production process condition.
The upper end both sides of body 1 have the fender stream portion 4 of buckling and keep off stream portion 4 and buckle toward the inboard of body 1, are convenient for block steam, have improved heat exchange efficiency.
According to the existing production technical conditions, through repeated calculation and comprehensive tests for many times, the heat exchanger of the stainless steel wall-mounted furnace comprises a heat exchange tube and a heat absorbing sheet, the heat exchange tube penetrates through the mounting hole 2 and is welded with the body 1, the height of the bending part 3 is 0.92-1.25mm, the welding strength of the heat exchange tube and the body 1 is high, the heat exchange tube is not easy to damage, meanwhile, the heat exchange between hot air blocked by the bending part 3 and the part of the heat exchange tube, which is connected with the bending part 3, can be effectively avoided, the heat exchange efficiency is improved, the distance between the lower end of the mounting hole 2 and the lower end edge of the body 1 is 1.22-1.58mm, the overhigh temperature of the heat absorbing sheet in a smoke high-temperature area can.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms body 1, mounting hole 2, bend 3, baffle 4, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (6)
1. The heat absorbing sheet of the stainless steel wall-hanging furnace heat exchanger comprises a sheet-shaped body (1), wherein a row of uniformly arranged mounting holes (2) are formed in the body (1), and the heat absorbing sheet is characterized in that a bent part (3) bent towards one side is arranged at the edge of the mounting hole (2), the bent part (3) is attached to the outer side wall of a heat absorbing pipe, the height a of the bent part (3) is 0.92-1.25mm, and the lower end of the mounting hole (2) is away from the lower end edge of the body (1) by a distance b of 1.22-1.58 mm.
2. The heat absorbing fin of the heat exchanger of the stainless steel hanging furnace as claimed in claim 1, wherein the distance c from the side edge of the mounting hole (2) to the corresponding edge of the body (1) is 0.92-1.35 mm.
3. The heat absorbing fin of a heat exchanger of a stainless steel fireplace as claimed in claim 1, wherein the lower end edge profile of the body (1) is similar to the lower end profile of the mounting hole (2).
4. The heat absorbing fin of a heat exchanger of a stainless steel wall hanging stove as claimed in claim 1, 2 or 3, characterized in that the mounting hole (2) is a vertically disposed flat hole, and the mounting hole (2) is vertically disposed, and the ratio of the width w to the length l of the mounting hole (2) is 1: 3.5 for 1: 7.5.
5. the heat absorbing fin of the heat exchanger of the stainless steel wall hanging stove as claimed in claim 1, 2 or 3, characterized in that the upper end of the body (1) is wavy and the wave troughs of the body (1) correspond to the upper ends of the mounting holes (2) one by one.
6. The heat absorbing sheet of the heat exchanger of the stainless steel wall hanging stove as claimed in claim 1, 2 or 3, wherein the body (1) has bent flow blocking parts (4) at both sides of the upper end thereof and the flow blocking parts (4) are bent toward the inside of the body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680209.5U CN210070237U (en) | 2019-05-13 | 2019-05-13 | Heat absorbing sheet of heat exchanger of stainless steel wall-hanging stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680209.5U CN210070237U (en) | 2019-05-13 | 2019-05-13 | Heat absorbing sheet of heat exchanger of stainless steel wall-hanging stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210070237U true CN210070237U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920680209.5U Active CN210070237U (en) | 2019-05-13 | 2019-05-13 | Heat absorbing sheet of heat exchanger of stainless steel wall-hanging stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210070237U (en) |
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2019
- 2019-05-13 CN CN201920680209.5U patent/CN210070237U/en active Active
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