WO2020133958A1

WO2020133958A1 - New heat exchange tube

Info

Publication number: WO2020133958A1
Application number: PCT/CN2019/091654
Authority: WO
Inventors: 颜安军
Original assignee: 浙江广涛卫厨有限公司
Priority date: 2018-12-26
Filing date: 2019-06-18
Publication date: 2020-07-02
Also published as: DE202019104840U1; CN209445601U

Abstract

Provided is a heat exchange tube, comprising a spiral tube body (1), wherein two ends of the tube body (1) are respectively a water inlet end (2) and a water outlet end (3); the tube body (1) is a flat tube; two sides of a cross section of the tube body (1) are both arc-shaped; and upper and lower side walls of the tube body (1) are both evenly provided with protruding first bosses (4) and second bosses (5), with adjacent first bosses (4) and second bosses (5) abutting against each other.

Description

New heat exchange tube

Technical field

The utility model belongs to the technical field of heating equipment, and relates to a heat exchange tube, in particular to a new type of heat exchange tube.

Background technique

Traditional gas wall-hung boilers are usually equipped with corresponding devices such as combustion chambers and heat exchangers. The heat exchanger absorbs the energy generated by the combustion gas and transfers it to the cold water flowing through the heat exchanger through the inlet pipe. After heat exchange, the water temperature rises. Hot water is discharged from the water outlet pipe to realize the function of heating the water flow; the high-temperature flue gas generated by the combustion is pumped out of the room through the pipe chamber by the fan. Since the water vapor in the flue gas takes a considerable part of the energy, the thermal efficiency of the wall-hung boiler is limited, and the heat utilization rate is difficult to improve. The traditional gas-fired wall-hung boiler is limited by the structure and materials, and cannot withstand the corrosive effect of condensed water produced by the liquefaction of steam on the product, and the condensed water cannot be discharged. Condensing gas-fired wall-mounted boilers use flue gas heat to heat the water flow, which can withstand the negative effects of condensate on the product and greatly improve the heat utilization rate.

At present, most of the components of the heat exchange assembly of the condensing heat exchanger on the market are spliced by welding technology. For example, the Chinese utility model patent with the application number 201720876454.4 discloses a condensing heat exchanger, including a shell and a spiral heat exchange Pipe, slow flow belt, water inlet pipe, water outlet pipe, flue gas heating pipe and condensate water outlet pipe, among them, there is a slow flow belt between the spiral heat exchange tube and the shell, the slow flow belt can guide and delay the flue gas generated by the burner The speed of the outward discharge allows the flue gas to further heat the spiral heat exchange tube and improve the heat exchange rate. The cross section is a spiral heat exchange tube with a D-shaped cross section. However, the heat exchange tube uses a flat tube, so its strength is not ideal.

Summary of the invention

The purpose of the utility model is to solve the above problems in the existing technology, and propose a heat exchange tube with high heat exchange efficiency and high strength.

The purpose of the utility model can be achieved through the following technical solutions: a new type of heat exchange tube, including a spiral tube body, the two ends of the tube body are respectively the water inlet end and the water outlet end, which is characterized by The tube body is a flat tube. Both sides of the cross section of the tube body are arc-shaped. The upper and lower side walls of the tube body are evenly provided with a protruding boss 1 and a boss 2 adjacent to each other. The boss 1 described above is in close contact with the boss 2 described above.

Since the upper and lower side walls of the pipe body are provided with bosses 1 and bosses 2 uniformly, the heat exchange area of the pipe body is increased, which has the advantage of higher heat exchange efficiency. The boss 1 and the corresponding boss 2 are in close contact , Increase the strength of the new heat exchange tube and improve the service life.

In the above-mentioned new heat exchange tube, the ratio of the height and width of the cross section of the tube body is 1:2 to 1:5. With the above arrangement, the tube body has a larger outer surface area, and the heat exchange efficiency is improved.

In the above-mentioned new heat exchange tube, the number of turns of the tube body is 8 to 16 turns.

In the above-mentioned novel heat exchange tube, the water inlet and the water outlet are arranged in parallel and the water inlet and the water outlet are oriented in the same direction. With the above settings, it is easy to install and use the new heat exchange tube.

In the above-mentioned new heat exchange tube, the boss 1 is elongated, the outer width of the boss 1 is greater than the inner end width, and the gaps formed by the adjacent bosses are the same . With the above arrangement, the gap of the heat exchange tube is the same, so that the heat exchange is more uniform.

In the above-mentioned new type heat exchange tube, the boss 1 is symmetrically arranged and the corresponding tangent of the center line of the boss 1 and the spiral of the tube body is 26°-61°. Preferably, the angle formed by the center line of the boss 1 and the center line corresponding to the spiral line of the pipe body is 45°.

In the above-mentioned new type heat exchange tube, the boss 2 is elongated, and the outer width of the boss 2 is greater than the width of the inner end, and the gaps formed by the adjacent bosses 2 are the same . With the above arrangement, the gap of the heat exchange tube is the same, so that the heat exchange is more uniform.

In the above-mentioned novel heat exchange tube, the boss 2 is symmetrically arranged and the corresponding tangent of the center line of the boss 2 and the spiral of the tube body is 26°-61°. Preferably, the angle formed by the center line of the boss 2 and the center line corresponding to the spiral line of the pipe body is 45°.

In the above-mentioned novel heat exchange tube, both ends of the tube body and the water inlet end and the water outlet end are smoothly transitioned. Both ends of the pipe body, the water inlet end and the water outlet end are smooth transitions, which has the advantages of high strength and convenient manufacture.

In the aforementioned new heat exchange tube, the tube body is made of stainless steel. The tube body is made of stainless steel, which has the advantages of high strength and long service life. As another way, the tube body is made of copper.

Compared with the existing technology, the new heat exchange tube has the following advantages:

1. Since the upper and lower side walls of the pipe body are evenly provided with bosses 1 and bosses 2, the heat exchange area of the pipe body is increased, which has the advantage of higher heat exchange efficiency. Boss 1 and the corresponding boss are in two phases Adherence increases the strength of the new heat exchange tube and improves the service life.

2. The lower side of the tube body is provided with the above-mentioned boss two. When the tube body is flattened along the axial direction, the boss one abuts on the adjacent boss two, which has a better support effect while maintaining the tube The distance between the bodies has the advantages of uniform heat exchange and stable and reliable structure;

3. The tube body is made of stainless steel, which has the advantages of high strength and long service life.

BRIEF DESCRIPTION

FIG. 1 is a schematic perspective view of the new heat exchange tube.

FIG. 2 is a perspective schematic view of the novel heat exchange tube from another angle.

Figure 3 is a schematic top view of the new heat exchange tube.

4 is a schematic cross-sectional view taken along line A-A of FIG. 3.

In the picture, 1. pipe body; 2. water inlet end; 3. water outlet end; 4. boss one; 5. boss two.

detailed description

The following are specific embodiments of the utility model and the accompanying drawings to further describe the technical solution of the utility model, but the utility model is not limited to these embodiments.

As shown in FIGS. 1 to 4, the new heat exchange tube includes a spiral-shaped tube body 1. The two ends of the tube body 1 are the water inlet end 2 and the water outlet end 3. The water inlet end 2 and the water outlet end 3 are arranged in parallel and The water inlet 2 and the water outlet 3 are oriented in the same direction. The tube body 1 is a flat tube. Both sides of the cross section of the tube body 1 are arc-shaped. The upper and lower side walls of the tube body 1 are evenly provided with protruding

bosses

1 and 4 and

bosses

2 and 5 are adjacent 4 is in close contact with

boss

2 and 5. The ratio of the height H and the width L of the cross section of the pipe body 1 is 1:2 to 1:5, which makes the heat exchange area of the pipe body 1 larger and improves the efficiency of human exchange.

The boss 4 is elongated and the outer width of the boss 4 is greater than the width of the inner end. The gap formed by the adjacent boss 4 is the same. The boss 4 is symmetrically arranged and the center line of the boss 4 The tangent corresponding to the spiral of the tube 1 is 26°-61°. Preferably, the angle formed by the center line of the boss 1 and the center of the spiral of the tube 1 is 45°.

The

bosses

2 and 5 are elongated, and the outer width of the bosses is greater than the inner ends and the gaps formed by the

adjacent bosses

2 and 5 are the same. The

bosses

2 and 5 are symmetrically arranged and the

bosses

2 and 5 The corresponding tangent of the center line and the spiral line of the tube 1 is 26°-61°. Preferably, the angle formed by the center line of the boss 2 and the center line corresponding to the spiral line of the tube 1 is 45°.

The connection parts of the two ends of the pipe body 1 with the water inlet end 2 and the water outlet end 3 are smooth transitions, which have the advantages of high strength and convenient manufacture.

The tube body 1 is made of stainless steel, which has the advantages of high strength and long service life. As another way, the tube body 1 is made of copper.

Since the upper and lower side walls of the tube body 1 are evenly provided with

bosses

1 and 4 and

bosses

2 and 5, the heat exchange area of the tube body 1 is increased, which has the advantage of higher heat exchange efficiency. The boss 1 and the corresponding protrusions Taiwan II 5 is close to each other, which increases the strength of the new heat exchange tube and improves the service life. The boss one 4 is elongated and the outer width of the boss one 4 is greater than the inner end width and the gap formed by the adjacent boss one 4 is the same, the boss two 5 is elongated and the boss The width of the outer end is larger than the width of the inner end and the gaps formed by the

adjacent bosses

2 and 5 are the same, so that the gap of the heat exchange tube is the same and the heat exchange is more uniform.

The specific embodiments described in this article are only examples of the spirit of the present invention. A person skilled in the art to which the utility model belongs can make various modifications or additions to the described specific embodiments or substitute in a similar manner, but it will not deviate from the spirit of the utility model or exceed the appended claims The defined range.

Although this article uses the terms tube 1, inlet 2, outlet 3, boss one 4, boss two five, etc., the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present invention; interpreting them as any kind of additional restrictions is contrary to the spirit of the present invention.

Claims

A new type of heat exchange tube includes a spiral tube body (1). The two ends of the tube body (1) are the water inlet end (2) and the water outlet end (3), respectively, characterized in that the pipe The body (1) is a flat tube, and both sides of the cross section of the tube body (1) are arc-shaped, and the upper and lower side walls of the tube body (1) are provided with convex bosses 1 ( 4) and two bosses (5) and the adjacent boss one (4) is in contact with the boss two (5).
The novel heat exchange tube according to claim 1, characterized in that the ratio of the height and width of the cross section of the tube body (1) is 1:2 to 1:5.
The novel heat exchange tube according to claim 1, characterized in that the water inlet (2) and the water outlet (3) are arranged in parallel and the water inlet (2) and the The water outlet (3) faces the same direction.
The novel heat exchange tube according to claim 1 or 2 or 3, characterized in that the boss one (4) is elongated and the outer end width of the boss one (4) is larger than the inner The width of the end and the gap formed by the adjacent boss one (4) are the same.
The new heat exchange tube according to claim 4, characterized in that, the boss one (4) is symmetrically arranged and the center line of the boss one (4) is in line with that of the tube body (1) The corresponding tangent of the helix is 26°-61°.
The new heat exchange tube according to claim 1 or 2 or 3, characterized in that the boss two (5) is elongated and the outer width of the boss two (5) is larger than the inner The width of the end and the gap formed by the two adjacent bosses (5) are the same.
The new heat exchange tube according to claim 6, characterized in that, the boss two (5) is symmetrically arranged and the center line of the boss two (5) is in line with that of the tube body (1) The corresponding tangent of the helix is 26°-61°.
The new heat exchange tube according to claim 1 or 2 or 3, characterized in that the two ends of the tube body (1) and the water inlet end (2) and the water outlet end (3) The connection parts are all smooth transition.
The novel heat exchange tube according to claim 1 or 2 or 3, characterized in that the tube body (1) is made of stainless steel material.