Combustion heat exchange device convenient to assemble

Abstract

The invention belongs to the technical field of water heaters, and discloses a combustion heat exchange device convenient to assemble, which is mainly used for solving the problems that a combustion heat exchange structure in an existing gas water heater is extremely easy to corrode and the assembly efficiency is low. The combustion heat exchange device mainly comprises three functional units including the fan, the heat exchanger and the combustion chamber, the heat exchanger is installed at the upper end opening of the combustion chamber so that the heat exchanger can directly exchange heat with high-temperature air in the combustion chamber below the heat exchanger, a traditional coil pipe type heat exchanger is omitted, the corrosion phenomenon can be effectively avoided, and the heat exchange efficiency is improved. The risks of water leakage, flue gas deterioration, flame overflow and the like are reduced, and the heat exchange efficiency can be improved; besides, connection and installation of all the functional units are completed through screws, the connecting and fixing mode of the whole device is simple, the connecting and inserting directions of all the screws are kept consistent, the assembling time is shortened, and the assembling efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of water heaters, and more particularly, relates to a combustion heat exchange device which is easy to assemble. Background Art

[0002] A gas water heater, also known as a gas water boiler, is a gas appliance that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger through combustion heating to achieve the purpose of preparing hot water. A gas water heater can quickly provide us with the hot water we need for life, and it has become an indispensable kitchen appliance for modern families.

[0003] At present, most gas water heaters on the market use oxygen-free copper heat exchangers with welded coils, which have coils surrounding the outside of the combustion chamber. The coils are fixed to the combustion chamber by welding. However, condensed water easily accumulates at the welding points between the coils and the combustion chamber. During long-term use, the accumulation of condensed water will cause the welding points to gradually corrode, thereby causing the coils to leak. In severe cases of corrosion, the flame of the combustion chamber may overflow, causing a risk of fire, thereby worsening the combustion condition of the gas water heater. In addition, the existing gas water heaters do not have a unified connection and installation standard for the overall functional unit assembly. The installation and connection between the functional units are complicated and difficult, which makes the work difficult for the installers and is prone to installation errors, resulting in low assembly efficiency of the overall device. Summary of the invention

[0004] The purpose of the present invention is to provide a combustion heat exchange device that is easy to assemble, aiming to solve the problems of the combustion heat exchange structure in the existing gas water heater being very prone to corrosion and having low assembly efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A combustion heat exchange device that is easy to assemble, includes a fan, a heat exchanger and a combustion chamber, wherein a burner is installed at the lower port of the combustion chamber, and is characterized in that the heat exchanger is installed at the upper port of the combustion chamber, and the fan is installed above the heat exchanger; the fan and the heat exchanger are fixedly connected to the combustion chamber by screws, and the connection insertion directions of all screws are consistent.

[0007] As a further preferred embodiment of the present technical solution, the combustion chamber includes a surround assembly and a front cover assembly, the surround assembly is in a three-sided enclosure shape, and the surround assembly and the front cover assembly correspond to each other to form the combustion chamber; a connecting portion I is respectively extended upward at the upper end of the surround on the side of the surround assembly opposite to the front cover assembly and the upper end of the front cover assembly, and a plurality of fan mounting holes I for connecting the fan and a plurality of heat exchanger mounting holes I for connecting the heat exchanger are provided on the connecting portion I.

[0008] As a further preferred embodiment of the present technical solution, the heat exchanger includes two symmetrically arranged fixed plates, heat exchange tubes and heat exchange fins. The heat exchange tubes are arranged horizontally in an "S" shape and are fixed by the two fixed plates. The heat exchange fins are installed on the heat exchange tubes in the area between the two fixed plates.

[0009] As a further preferred embodiment of the present technical solution, the heat exchanger is horizontally installed between the connecting portion I on the enclosure assembly and the connecting portion I on the front cover assembly, and the two end surfaces of the fixing plate in the length direction respectively abut against the two connecting portions I, and the lower end surfaces of the two fixing plates respectively abut against the upper end surfaces of the two opposite enclosures in the enclosure assembly.

[0010] As a further preferred embodiment of the present technical solution, both end surfaces of the fixing plate abutting against the connection part I are provided with a connection part II extending outward, the connection part II is parallel to the connection part I, and a heat exchanger mounting hole II corresponding to the heat exchanger mounting hole I is provided on the connection part II.

[0011] As a further preferred embodiment of the present technical solution, the lower end of the fan is adapted to the upper port of the combustion chamber, and a connection portion III is provided at the lower end of the fan extending downward, and the connection portion III is covered on the connection portion I, and the connection portion III is parallel to the connection portion I, and a fan mounting hole II corresponding to the fan mounting hole I is provided on the connection portion III; the lower end of the connection portion III abuts against the upper end surfaces of the two fixing plates.

[0012] As a further preferred embodiment of the present technical solution, a “U”-shaped notch is provided on the connection portion III corresponding to the connection portion I of the front cover assembly.

[0013] As a further preferred embodiment of the present technical solution, the heat exchanger mounting hole I on the connection part I of the enclosure assembly, the heat exchanger mounting hole II on the connection part II of the fixing plate against the side of the front cover assembly, the fan mounting hole II on the connection part III corresponding to the connection part I of the enclosure assembly, and the fan mounting hole I on the connection part I of the front cover assembly are flip-up holes; the heat exchanger mounting hole II on the connection part II of the fixing plate against the side of the enclosure assembly, the heat exchanger mounting hole I on the connection part I of the front cover assembly, the fan mounting hole I on the connection part I of the enclosure assembly, and the fan mounting hole II on the connection part III corresponding to the connection part I of the front cover assembly are through holes.

[0014] As a further preferred embodiment of the present technical solution, the enclosure assembly and the front cover assembly are multi-layer hollow structures, a cold air inlet is arranged on the outer surface of the enclosure assembly and the front cover assembly, and a cold air outlet is arranged on the inner surface of the enclosure assembly and the front cover assembly.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The combustion heat exchange device in the present invention mainly includes three functional units: a fan, a heat exchanger and a combustion chamber. Among them, the heat exchanger is installed at the upper port of the combustion chamber so that it can directly exchange heat with the high-temperature air in the combustion chamber below, eliminating the traditional coil-type heat exchanger, which can not only effectively avoid corrosion, reduce the risks of water leakage, flue gas deterioration, flame spillage, etc., but also improve the heat exchange efficiency. In addition, the connection and installation between the functional units of the present invention are all completed by screws, the connection and fixing method of the overall device is simple, and the connection and insertion directions of all screws in the present invention are kept consistent, which is conducive to reducing assembly time and improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is an exploded view of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall assembly structure of the present invention.

[0020] Among them, 1-fan, 11-fan mounting hole II, 12-"U"-shaped notch, 2-heat exchanger, 21-fixing plate, 22-heat exchange tube, 23-heat exchange fin, 24-heat exchanger mounting hole II, 3-combustion chamber, 31-enclosure assembly, 32-front cover assembly, 33-fan mounting hole I, 34-heat exchanger mounting hole I, 4-burner. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1 A combustion heat exchange device that is easy to assemble is shown, comprising a fan 1, a heat exchanger 2 and a combustion chamber 3, wherein a burner 4 is installed at the lower port of the combustion chamber 3, the heat exchanger 2 is installed at the upper port of the combustion chamber 3, and the fan 1 is installed above the heat exchanger 2; the fan 1 and the heat exchanger 2 are fixedly connected to the combustion chamber 3 by screws, and the connection insertion directions of all screws are consistent.

[0024] In this embodiment, the combustion chamber 3 includes a surround assembly 31 and a front cover assembly 32, and the surround assembly 31 is in a three-sided enclosure shape. The surround assembly 31 and the front cover assembly 32 correspond to each other to form the combustion chamber 3. It should be clarified that the surround assembly 31 and the front cover assembly 32 are connected and enclosed as a whole by a plurality of screws; a connecting portion I is respectively extended upward at the upper end of the surround on the side opposite to the front cover assembly 32 of the surround assembly 31 and the upper end of the front cover assembly 32, and a plurality of fan mounting holes I33 for connecting the fan 1 and a plurality of heat exchanger mounting holes I34 for connecting the heat exchanger 2 are provided on the connecting portion I.

[0025] In this embodiment, the heat exchanger 2 includes two symmetrically arranged fixed plates 21, a heat exchange tube 22 and a heat exchange fin 23. The heat exchange tube 22 is horizontally arranged in an "S" shape and is fixed by the two fixed plates 21. The heat exchange fin 23 is installed on the heat exchange tube 22 in the area between the two fixed plates 21.

[0026] More specifically, the heat exchanger 2 is horizontally installed between the connection part I on the enclosure assembly 31 and the connection part I on the front cover assembly 32, and the two end surfaces of the fixed plate 21 in the length direction respectively abut against the two connection parts I, and the lower end surfaces of the two fixed plates 21 respectively abut against the upper end surfaces of the two opposite enclosures in the enclosure assembly 31.

[0027] More specifically, both end surfaces of the fixing plate 21 abutting against the connection part I extend outwardly to form a connection part II, the connection part II is parallel to the connection part I, and a heat exchanger mounting hole II24 corresponding to the heat exchanger mounting hole I34 is provided on the connection part II.

[0028] In this embodiment, the lower end of the fan 1 is adapted to the upper port of the combustion chamber 3, and a connection portion III is extended downward from the lower end of the fan 1, and the connection portion III is covered on the connection portion I, and the connection portion III is parallel to the connection portion I, and a fan mounting hole II11 corresponding to the fan mounting hole I33 is provided on the connection portion III; the lower end of the connection portion III abuts against the upper end surfaces of the two fixing plates 21.

[0029] In this embodiment, the heat exchanger mounting hole I34 on the connection part I of the enclosure assembly 31, the heat exchanger mounting hole II24 on the connection part II of the fixing plate 21 against the side of the front cover assembly 32, the fan mounting hole II11 on the connection part III corresponding to the connection part I of the enclosure assembly 31, and the fan mounting hole I33 on the connection part I of the front cover assembly 32 are turned-over holes; the heat exchanger mounting hole II24 on the connection part II of the fixing plate 21 against the side of the enclosure assembly 31, the heat exchanger mounting hole I34 on the connection part I of the front cover assembly 32, the fan mounting hole I33 on the connection part I of the enclosure assembly 31, and the fan mounting hole II11 on the connection part III corresponding to the connection part I of the front cover assembly 32 are through holes; the provision of the turned-over holes and the through holes makes screw fixing more convenient and quick, reduces assembly difficulty, and improves assembly efficiency.

[0030] In this embodiment, a "U"-shaped notch 12 is provided on the connection portion III corresponding to the connection portion I of the front cover assembly 32. The "U"-shaped notch 12 is mainly used to determine the relative position of the fan 1 and the combustion chamber 3 during assembly, which is beneficial to the assembly of the two.

[0031] It should be clear that the fan 1, the heat exchanger 2, and the combustion chamber 3 in this embodiment can be independently assembled in modular form. At the same time, the burner 4 can also be pre-connected with the combustion chamber 3 as a whole. Subsequently, it is only necessary to assemble each functional unit as a whole. The following are the steps for assembling the combustion heat exchange device in this embodiment as a whole: First, the heat exchanger 2 is correspondingly placed at the upper port of the combustion chamber 3, so that the heat exchanger mounting hole Ⅰ34 on the connecting part Ⅰ of the enclosure assembly 31 and the front cover assembly 32 is aligned with the connecting part Ⅱ of the fixing plate 21. The heat exchanger mounting holes Ⅱ24 on the front cover assembly 31 correspond one to one, and then the mounting screws are inserted from one side of the through hole and fixed in the corresponding turned-over hole to realize the connection and fixation of the heat exchanger 2 and the combustion chamber 3; then, the fan 1 is correspondingly placed above the combustion chamber 3, so that the fan mounting holes Ⅰ33 on the connecting part Ⅰ of the enclosure assembly 31 and the front cover assembly 32 correspond one to one with the fan mounting holes Ⅱ11 on the connecting part Ⅲ at the lower end of the fan 1, and then the mounting screws are inserted from one side of the through hole and fixed in the corresponding turned-over hole to realize the connection and fixation of the fan 1 and the combustion chamber 3.

[0032] All mounting screws in this embodiment are installed from the front, which is convenient for the installer to check and can also speed up the installation speed, further improving the assembly efficiency.

[0033] Example 2

[0034] This embodiment is a further supplement to Embodiment 1. In this embodiment, the enclosure assembly 31 and the front cover assembly 32 are multi-layer hollow structures, and cold air inlets are arranged on the outer surfaces of the enclosure assembly 31 and the front cover assembly 32, and cold air outlets are arranged on the inner surfaces of the enclosure assembly 31 and the front cover assembly 32.

[0035] This embodiment adopts a hollow structure of the enclosure assembly 31 and the front cover assembly 32, so that a cold air circulation channel is formed inside the side wall of the combustion chamber 3 to achieve air cooling of the surface of the combustion chamber 3, which can effectively reduce the temperature of the surface of the combustion chamber 3 and increase the service life of the combustion chamber 3.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combustion heat exchange device that is easy to assemble, comprising a fan (1), a heat exchanger (2) and a combustion chamber (3), wherein a burner (4) is installed at the lower port of the combustion chamber (3), characterized in that: The heat exchanger (2) is installed at the upper port of the combustion chamber (3), and the fan (1) is installed above the heat exchanger (2); the fan (1) and the heat exchanger (2) are fixedly connected to the combustion chamber (3) by screws, and the connection insertion directions of all the screws are consistent.

2. The combustion heat exchange device according to claim 1, characterized in that: The combustion chamber (3) comprises a panel assembly (31) and a front cover assembly (32), wherein the panel assembly (31) is enclosed on three sides, and the panel assembly (31) and the front cover assembly (32) enclose each other to form the combustion chamber (3); a connecting portion I is provided at the upper end of the panel assembly (31) on one side opposite to the front cover assembly (32) and at the upper end of the front cover assembly (32), and a connecting portion I is provided extending upward, wherein a plurality of fan mounting holes I (33) for connecting to the fan (1) and a plurality of heat exchanger mounting holes I (34) for connecting to the heat exchanger (2) are provided on the connecting portion I.

3. The combustion heat exchange device according to claim 2, characterized in that: The heat exchanger (2) comprises two symmetrically arranged fixing plates (21), a heat exchange tube (22) and a heat exchange fin (23); the heat exchange tube (22) is arranged horizontally in an "S" shape and is fixed by the two fixing plates (21); the heat exchange fin (23) is installed on the heat exchange tube (22) in the area between the two fixing plates (21).

4. The combustion heat exchange device according to claim 3, characterized in that: The heat exchanger (2) is horizontally mounted between the connection portion I on the enclosure assembly (31) and the connection portion I on the front cover assembly (32), and the two end faces of the fixed plate (21) in the length direction respectively abut against the two connection portions I, and the lower end faces of the two fixed plates (21) respectively abut against the upper end faces of the two opposite enclosures in the enclosure assembly (31).

5. The combustion heat exchange device according to claim 4, characterized in that: The fixing plate (21) has two end surfaces abutting against the connection part I, and both end surfaces extend outward to form a connection part II, which is parallel to the connection part I. A heat exchanger mounting hole II (24) corresponding to the heat exchanger mounting hole I (34) is provided on the connection part II.

6. The combustion heat exchange device according to claim 5, characterized in that: The lower end of the fan (1) is matched with the upper end of the combustion chamber (3), and a connection portion III is provided at the lower end of the fan (1) to extend downward, and the connection portion III is covered on the connection portion I, and the connection portion III is parallel to the connection portion I, and a fan mounting hole II (11) corresponding to the fan mounting hole I (33) is provided on the connection portion III; the lower end of the connection portion III abuts against the upper end surfaces of the two fixing plates (21).

7. The combustion heat exchange device according to claim 6, characterized in that: A "U"-shaped notch (12) is provided on the connection portion III corresponding to the connection portion I of the front cover assembly (32).

8. The combustion heat exchange device according to claim 6, characterized in that: The heat exchanger mounting hole I (34) on the connection part I of the enclosure assembly (31), the heat exchanger mounting hole II (24) on the connection part II of the fixing plate (21) abutting against the front cover assembly (32), the fan mounting hole II (11) on the connection part III corresponding to the connection part I of the enclosure assembly (31), and the fan mounting hole I (33) on the connection part I of the front cover assembly (32) are folded holes; the heat exchanger mounting hole II (24) on the connection part II of the fixing plate (21) abutting against the side of the enclosure assembly (31), the heat exchanger mounting hole I (34) on the connection part I of the front cover assembly (32), the fan mounting hole I (33) on the connection part I of the enclosure assembly (31), and the fan mounting hole II (11) on the connection part III corresponding to the connection part I of the front cover assembly (32) are through holes.

9. The combustion heat exchange device according to any one of claims 2 to 8, characterized in that: The enclosure assembly (31) and the front cover assembly (32) are multi-layer hollow structures, and cold air inlets are arranged on the outer surfaces of the enclosure assembly (31) and the front cover assembly (32), and cold air outlets are arranged on the inner surfaces of the enclosure assembly (31) and the front cover assembly (32).

Images