Gas equipment and cover plate

Abstract

The utility model discloses fuel gas equipment and a cover plate, the fuel gas equipment comprises a combustion heat exchange assembly and a fan assembly, the combustion heat exchange assembly is provided with a combustion chamber, the fan assembly comprises a cover body, and the cover body is arranged on the combustion heat exchange assembly and is communicated with the combustion chamber; the combustion heat exchange assembly comprises a cover plate, the end, close to the cover body, of the cover plate is provided with a first edge, the cover body is provided with a second edge corresponding to the first edge, the first edge abuts against the second edge, the first edge is provided with a first connecting part, the second edge is provided with a first matching part, and the first matching part is matched with the first connecting part. And the first connecting part is clamped with the first matching part in a limiting manner. According to the technical scheme provided by the utility model, the heat exchange efficiency and the assembly efficiency of the existing gas equipment can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas heating, and particularly relates to a gas device and a cover plate. Background Art

[0002] Gas devices, such as gas water heaters, produce hot water by combustion heating. The gas device has a combustion chamber and a fan. Gas burns in the combustion chamber to generate high-temperature flue gas. Under the action of the fan, the high-temperature flue gas exchanges heat with a heat exchanger to achieve the purpose of heating water. The fan of the existing gas device is connected to the plate body of the combustion chamber by screws. This not only makes the assembly efficiency low, but also the high-temperature flue gas will leak from the gap between the fan and the plate body of the combustion chamber, thereby resulting in low heat exchange efficiency of the gas device. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose a gas device and a cover plate, aiming to improve the heat exchange efficiency and assembly efficiency of the existing gas device.

[0004] To achieve the above object, the gas device proposed by the utility model includes:

[0005] A combustion heat exchange assembly having a combustion chamber; and

[0006] A fan assembly including a housing. The housing is disposed on the combustion heat exchange assembly and communicates with the combustion chamber. The combustion heat exchange assembly includes a cover plate. One end of the cover plate close to the housing has a first edge. The housing has a second edge corresponding to the first edge. The first edge abuts against the second edge. The first edge is provided with a first connection portion, and the second edge is provided with a first mating portion. The first connection portion and the first mating portion are in limit clamping connection.

[0007] In an embodiment, the first edge is further provided with a second connection portion, and the housing is provided with a second mating portion corresponding to the second connection portion. The second connection portion abuts against the housing and is connected to the second mating portion.

[0008] In an embodiment, the second connection portion and the second mating portion are correspondingly provided with assembly holes for a fastener to pass through. The second connection portion is locked to the second mating portion by the fastener.

[0009] In an embodiment, one of the first connection portion and the first mating portion includes a barb, and the other includes a clamping hole. The barb is clamped with the clamping hole.

[0010] In an embodiment, the other of the first connection portion and the first mating portion further includes a first bending portion, and the first bending portion is inserted into the barb.

[0011] In one embodiment, the first edge is provided with the barbs, the opening direction of the barbs faces the outside of the cover body, the cover body is provided with the card holes, the second edge is provided with the first bending portion extending towards the inside of the cover body, and the front end of the barb extends out of the cover body from the card hole.

[0012] In one embodiment, the barb includes an extension section, a first limiting section and a second limiting section which are connected in sequence. The connection part between the extension section and the first limiting section is bent. The connection part between the first limiting section and the second limiting section is bent. The second limiting section abuts against the first bending portion, and at least part of the second limiting section is clamped in the card hole.

[0013] In one embodiment, one of the first edge and the second edge is provided with a second bending portion extending in the up-and-down direction, and the other has a mating surface opposite to the second bending portion, and the second bending portion abuts against the mating surface.

[0014] In one embodiment, the first edge is provided with a second bending portion extending towards the cover body. The inner side of the second edge has a mating surface. The second bending portion is arranged inside the cover body and abuts against the mating surface. The second bending portion and the barb are arranged side by side along the extending direction of the first edge.

[0015] In one embodiment, the first edge is provided with a plurality of the barbs and a plurality of the second bending portions, and the plurality of barbs and the plurality of second bending portions are arranged at intervals along the extending direction of the first edge.

[0016] In one embodiment, the first edge is further provided with a second connecting portion connected to the cover body. The second connecting portion is located between the plurality of barbs and / or between the plurality of second bending portions, and the second connecting portion is arranged at intervals with the barbs and the second bending portions.

[0017] In one embodiment, the combustion heat exchange assembly includes a combustion assembly and a heat exchanger. The combustion assembly has the combustion chamber. The heat exchanger is arranged above the combustion chamber. The heat exchanger includes a heat exchange assembly and two end plates arranged at both ends of the heat exchange assembly. The top ends of the end plates are respectively provided with first mounting portions. The cover body is provided with first assembly portions corresponding to the first mounting portions, and the first mounting portions and the first assembly portions are in sealing cooperation.

[0018] In one embodiment, the first assembly portion includes a first folded edge, which extends toward a side away from the cover body, and the first mounting portion includes a support plate and a second folded edge corresponding to the first folded edge, the second folded edge is arranged on a side of the support plate away from the end plate and extends upward, the first folded edge is abutted and sealed against the support plate, and the second folded edge is located on the outside of the first folded edge.

[0019] In one embodiment, a third folded edge extending upward is provided on a side of the first folded edge facing away from the cover body, and the third folded edge is provided on an inner side of the second folded edge;

[0020] And / or, a seal is provided between the first folded edge and the support plate.

[0021] The utility model also proposes a cover plate, which is applied to gas equipment, wherein the gas equipment includes a fan assembly, and the cover plate has a first edge, the first edge is provided with a first connecting portion and a second bending portion, the first connecting portion is used to be limitedly engaged with a cover body of the fan assembly, and the second bending portion is used to abut against the inner side surface of the cover body of the fan assembly.

[0022] The gas equipment of the utility model includes a combustion heat exchange component and a fan component, the combustion heat exchange component has a combustion chamber, the fan component includes a cover body, the cover body is arranged on the combustion heat exchange component and communicated with the combustion chamber, the first edge of the cover plate abuts against the second edge of the cover body, so that the edge of the cover plate and the edge of the cover body are closely matched, and the high-temperature flue gas generated by the combustion of gas in the combustion chamber is not easy to leak from between the cover plate and the cover body, reducing the risk of high-temperature flue gas leakage, thereby helping to improve the heat exchange efficiency of the gas equipment, and the first connecting part of the cover plate and the first matching part of the cover body are limitedly engaged, which is conducive to improving the assembly efficiency of the gas equipment. It can be seen that the utility model proposes a gas equipment with high heat exchange efficiency and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A partial structural schematic diagram of an embodiment of a gas device provided by the utility model;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure after the structure is decomposed;

[0026] Figure 3 The enlarged view of part A in Figure 2 ;

[0027] Figure 4 The enlarged view of part B in Figure 2 ;

[0028] Figure 5 The sectional view of the structure in Figure 1 ;

[0029] Figure 6 The enlarged view of part C in Figure 5 ;

[0030] Figure 7 The schematic view of the structure of the cover plate in Figure 1 ;

[0031] Figure 8 The enlarged view of part D in Figure 7 ;

[0032] Explanation of the reference numerals in the drawings:

[0033] 10. Gas equipment;

[0034] 100. Combustion and heat exchange assembly; 110. Cover plate; 111. First edge; 112. First connecting part; 113. Second connecting part; 114. Barbs; 115. Extension section; 116. First limiting section; 117. Second limiting section; 118. Second bending part; 120. Combustion assembly; 121. Combustion chamber; 130. Heat exchanger; 131. Heat exchange assembly; 132. End plate; 133. First mounting part; 134. Support plate; 135. Second hemming;

[0035] 200. Fan assembly; 210. Housing; 211. Second edge; 212. First mating part; 213. Second mating part; 214. Card hole; 215. First bending part; 216. Mating surface; 217. First assembly part; 218. First hemming; 219. Third hemming;

[0036] 11. Assembly hole.

[0037] The realization, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0039] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] The present utility model provides a gas device with high heat exchange efficiency and assembly efficiency.

[0042] Please refer to Figures 1 to 4 , in an embodiment of the present utility model, the gas device 10 includes a combustion heat exchange component 100 and a fan component 200. The combustion heat exchange component 100 has a combustion chamber 121; the fan component 200 includes a housing 210, and the housing 210 is disposed on the combustion heat exchange component 100 and communicates with the combustion chamber 121; the combustion heat exchange component 100 includes a cover plate 110. One end of the cover plate 110 close to the housing 210 has a first edge 111, the housing 210 has a second edge 211 corresponding to the first edge 111, the first edge 111 abuts against the second edge 211, the first edge 111 is provided with a first connecting portion 112, the second edge 211 is provided with a first mating portion 212, and the first connecting portion 112 is in limit snap connection with the first mating portion 212.

[0043] It is understandable that the gas equipment 10 includes but is not limited to gas water heaters, gas-fired hot water heating boilers, etc. The combustion and heat exchange assembly 100 includes a combustion assembly 120 and a heat exchanger 130. The combustion assembly 120 has a combustion chamber 121. The heat exchanger 130 is arranged above the combustion chamber 121. The gas in the combustion assembly 120 burns in the combustion chamber 121 to generate high-temperature flue gas. The high-temperature flue gas is transported under the action of the fan assembly 200 to exchange heat with the heat exchanger 130 to heat the cold water flow path of the heat exchanger 130. The structure of the combustion assembly 120 can be various, which is not specifically limited herein. It only needs to have a combustion chamber 121 capable of burning gas.

[0044] In one embodiment, the combustion assembly 120 includes a burner and a box body. The box body has a cover plate 110. The cover plate 110 can be an independent part or a part of the box body. That is to say, the box body can be composed of multiple plate bodies. The multiple plate bodies can be of an integral structure, or they can be of a split structure. Or, some of the plate bodies are of an integral structure and the other part of the plate bodies are of a split structure, which is not specifically limited herein. For example, the box body includes a frame body and a cover plate 110. The frame body has a semi-surrounding structure with a side opening. The cover plate 110 is covered at the side opening of the frame body. The frame body and the cover plate 110 enclose a combustion chamber 121 that penetrates up and down. The combustion chamber 121 is communicated with the open end of the burner. Among them, the frame body and the cover plate 110 are respectively independent parts. The cover plate 110 and the frame body are assembled together by, but not limited to, fastener connection, snap connection and other methods; or, the cover plate 110 and the frame body are of an integral structure; the frame body has a first side plate and two second side plates respectively arranged on opposite sides of the first side plate. Both second side plates extend forward relative to the first side plate so that a side opening is formed at the front side of the frame body. The cover plate 110 is covered at the front side opening of the frame body. The first side plate is arranged at the rear side of the frame body. The connection mode between the first side plate and the two second side plates can be integrally formed or assembled together by riveting, welding, fastener connection and other methods.

[0045] Furthermore, the box body can be arranged at the top open end of the burner so that the combustion chamber 121 is communicated with the burner. Of course, in another embodiment, when the gas equipment 10 adopts inverted combustion, the burner can also be arranged at the top of the combustion chamber 121 of the box body so that the burner is communicated with the combustion chamber 121. The cover plate 110 can be located at the front side of the box body. Of course, the cover plate 110 can also be located at the left side, right side, rear side, etc. of the box body, which is not specifically limited herein. In this solution, the cover plate 110 is located at the front side of the box body. It should be noted that the orientation such as the "front side" of the box body is based on the orientation shown in the drawings, rather than each component must have a specific orientation. The front side refers to the orientation of the gas equipment 10 facing the user. Please refer to the drawings specifically.

[0046] Further, when the gas equipment 10 is operating, the fan assembly 200 operates to generate a negative pressure in the combustion chamber 121. The gas in the combustion chamber 121 burns to generate high-temperature flue gas. The fan assembly 200 includes a housing 210 and a fan main body. The housing 210 can be disposed on the top of the heat exchanger 130. When the fan main body operates, the high-temperature flue gas passes through the combustion chamber 121 and the heat exchanger 130 from bottom to top and then enters the housing 210. The housing 210 functions to gather the flue gas, and finally the flue gas is discharged from the smoke outlet of the housing 210. Optionally, when assembling the fan assembly 200, the housing 210 of the fan assembly 200 can be disposed on the top of the heat exchanger 130, and the two end plates 132 of the heat exchanger 130 can be used to position and support the housing 210.

[0047] Further, the first edge 111 of the cover plate 110 abuts against the second edge 211 of the housing 210, so that there is no gap or a small gap between the cover plate 110 and the housing 210. The high-temperature flue gas generated by the combustion of the gas in the combustion chamber 121 is not likely to leak from between the cover plate 110 and the housing 210, and the cold air outside the housing 210 is not likely to enter the housing 210 to increase the load of the fan assembly 200. Thus, it is beneficial to improve the heat exchange efficiency of the gas equipment 10, reduce the emission of unburned carbon monoxide, and improve the heat exchange efficiency and use safety of the gas equipment 10.

[0048] Further, the first connecting portion 112 and the first mating portion 212 are limited and clamped. The first connecting portion 112 and the first mating portion 212 can adopt an assembly method of a hook and a clamping portion, and the clamping portion can be a clamping hole or a clamping groove; the first connecting portion 112 and the first mating portion 212 can also adopt an assembly method of a barb and a clamping portion, and the clamping portion can be a clamping hole or a clamping groove, which is not specifically limited herein. With such a setting, the assembly efficiency is improved and the structure is simplified.

[0049] The gas equipment 10 of the present utility model includes a combustion heat exchange assembly 100 and a fan assembly 200. The combustion heat exchange assembly 100 has a combustion chamber 121. The fan assembly 200 includes a housing 210. The housing 210 is disposed on the combustion heat exchange assembly 100 and communicated with the combustion chamber 121. The first edge 111 of the cover plate 110 abuts against the second edge 211 of the housing 210, so that the edge of the cover plate 110 is closely matched with the edge of the housing 210. The high-temperature flue gas generated by the combustion of the gas in the combustion chamber 121 is not likely to leak from between the cover plate 110 and the housing 210, reducing the risk of high-temperature flue gas leakage. Further, it is beneficial to improve the heat exchange efficiency of the gas equipment 10. And the first connecting portion 112 of the cover plate 110 and the first mating portion 212 of the housing 210 are limited and clamped, which is beneficial to improve the assembly efficiency of the gas equipment 10. It can be seen that the present utility model provides a gas equipment 10 with high heat exchange efficiency and assembly efficiency.

[0050] To further ensure the stability of the assembly of the cover plate 110, please refer to Figures 2 to 4 , in one embodiment, the first edge 111 is further provided with a second connecting portion 113, and the cover body 210 is provided with a second mating portion 213 corresponding to the second connecting portion 113. The second connecting portion 113 abuts against the cover body 210 and is connected to the second mating portion 213.

[0051] It can be understood that the number of the first connecting portions 112 can be multiple. The second connecting portion 113 can be disposed between the multiple first connecting portions 112. Of course, the second connecting portion 113 can also be spaced from the first connecting portion 112. The first connecting portion 112 and the second connecting portion 113 are arranged side by side along the extending direction of the first edge 111. The cover body 210 is provided with a second mating portion 213. The second connecting portion 113 is disposed on the top of the cover plate 110 and is connected to the second mating portion 213. The second connecting portion 113 can abut against the inner wall surface of the cover body 210, and of course, it can also abut against the outer wall surface of the cover body 210. The connection manner between the second connecting portion 113 and the second mating portion 213 can be connected by a fastener or by a snap structure, which is not specifically limited herein.

[0052] In one embodiment, the second connecting portion 113 and the second mating portion 213 are correspondingly provided with assembly holes 11 for the fastener to pass through. The second connecting portion 113 is locked to the second mating portion 213 by the fastener. During assembly, the second connecting portion 113 is abutted against the second mating portion 213 along a preset assembly direction, so that the assembly holes 11 on the second connecting portion 113 are aligned with the assembly holes 11 on the second mating portion 213, and then the fastener is sequentially passed through the two assembly holes 11 along the preset assembly direction and locked, so that the assembly is simple and convenient, which is beneficial to improving the assembly stability of the cover plate 110. Among them, the fastener includes but is not limited to screws, rivets, etc. In this solution, the second connecting portion 113 abuts against the inner wall surface of the cover body 210, so that the cover plate 110 can be closely fitted with the inner wall of the cover body 210, reducing the risk of leakage of high-temperature flue gas between the cover plate 110 and the cover body 210, and thus being beneficial to improving the heat exchange efficiency of the gas equipment 10.

[0053] Furthermore, there are multiple ways to form the second connecting portion 113. For example, a first flanging extending upward is provided on the first edge 111 of the cover plate 110, and this first flanging forms the second connecting portion 113. The first flanging is provided with an assembly hole 11. A second mating portion 213 is provided on the cover body 210. The second mating portion 213 can be a part of the cover body 210 itself or an additional part added. It only needs to be provided with an assembly hole 11 on the second mating portion 213. In this embodiment, the second connecting portion 113 and the cover plate 110 are of an integral structure, and the cover body 210 itself has the second mating portion 213, so that the structure is simple and reliable and is convenient for production and manufacturing. Of course, in some embodiments, assembly can also be carried out by welding or other means.

[0054] To improve the assembly stability and assembly efficiency of the cover plate 110 and the cover body 210, please refer to Figure 3 and Figure 4 , in an embodiment, one of the first connecting portion 112 and the first mating portion 212 includes a barb 114, and the other includes a locking hole 214, and the barb 114 is snap-fitted with the locking hole 214. It can be understood that the opening direction of the barb 114 can face the inside of the cover body 210 or the outside of the cover body 210, and it is not specifically limited here. The structure of the barb 114 is used to hook in the locking hole 214, making the assembly of the cover plate 110 and the cover body 210 more stable.

[0055] Please refer to Figure 5 and Figure 6 , in an embodiment, the other of the first connecting portion 112 and the first mating portion 212 further includes a first bending portion 215, and the first bending portion 215 is inserted into the barb 114. It can be understood that the first bending portion 215 is inserted into the barb 114, so that the first bending portion 215 can further limit the barb 114, thus reducing the situation of the barb 114 shaking in the locking hole 214 and improving the assembly stability of the cover plate 110 and the cover body 210. In addition, the inner wall of the barb 114 abuts against the first bending portion 215, so that the first bending portion 215 can also support the barb 114 and the cover plate 110, further improving the assembly stability of the cover plate 110 and the cover body 210.

[0056] Please refer to Figure 6 , in an embodiment, the barb 114 is provided on the first edge 111, the opening direction of the barb 114 faces the outside of the cover body 210, the locking hole 214 is provided on the cover body 210, the second edge 211 is provided with the first bending portion 215 extending toward the inside of the cover body 210, and the front end of the barb 114 extends out of the cover body 210 from the locking hole 214.

[0057] It can be understood that the present solution is described by taking the cover body 210 being disposed above the combustion chamber 121 as an example. A barb 114 is provided on the first edge 111 at the upper end of the cover plate 110, and the opening direction of the barb 114 faces the outside of the cover body 210, specifically, the opening direction of the barb 114 faces the front side of the cover body 210. A first bending portion 215 and a clamping hole 214 are provided at the second edge 211 at the lower end of the cover body 210. The clamping hole 214 is located above the first bending portion 215, and the first bending portion 215 is bent toward the inside of the cover body 210. When assembling the cover plate 110, the barb 114 of the cover plate 110 is clamped into the clamping hole 214 of the cover body 210 along the preset assembly direction, and the first bending portion 215 is clamped into the barb 114, so that the assembly is simple and convenient, and it is beneficial for the first edge 111 to abut against the second edge 211, improving the assembly efficiency and reducing the assembly gap.

[0058] Please refer to Figures 5 to 8 , in an embodiment, the barb 114 includes an extension section 115, a first limiting section 116 and a second limiting section 117 that are connected in sequence. The connection between the extension section 115 and the first limiting section 116 is bent, the connection between the first limiting section 116 and the second limiting section 117 is bent, the second limiting section 117 abuts against the first bending portion 215, and at least part of the second limiting section 117 is clamped into the clamping hole 214.

[0059] It can be understood that the extension section 115, the first limiting section 116 and the second limiting section 117 enclose a semi-surrounding structure with one side open, and the opening direction faces the outside of the cover body 210. One end of the second limiting section 117 is connected to the first limiting section 116, and the other end of the second limiting section 117 passes through the clamping hole 214 and extends outside the cover body 210 to prevent the front end of the second limiting section 117 from occupying the internal space of the cover body 210. As for the bending angles of the first limiting section 116 and the second limiting section 117, there is no limitation, and they can be right angles, acute angles, or obtuse angles, etc. In the present solution, the bending angle between the extension section 115 and the first limiting section 116 is a right angle, which is convenient for processing. In addition, the bending angles of the first limiting section 116 and the second limiting section 117 are not limited, and they can be right angles, acute angles, or obtuse angles, etc.

[0060] In one embodiment, the distance between the extension section 115 and the second limiting section 117 is gradually enlarged in the direction from the first limiting section 116 towards the second edge 211. With this arrangement, that is, the bending angles of the first limiting section 116 and the second limiting section 117 are obtuse angles, so that the opening direction of the barb 114 is flared, which is beneficial to improving the smoothness of the barb 114 being clamped in the clamping hole 214. Optionally, the second limiting section 117 extends obliquely upwards and away from the extension section 115, which can play a certain guiding role in the installation of the barb 114.

[0061] In one embodiment, one of the first edge 111 and the second edge 211 is provided with a second bending portion 118 extending in the up-down direction, and the other has a mating surface 216 opposite to the second bending portion 118, and the second bending portion 118 abuts against the mating surface 216.

[0062] It can be understood that when the first edge 111 of the cover plate 110 is provided with the second bending portion 118, the second edge 211 of the cover body 210 has the mating surface 216, and the mating surface 216 can be located on the inner side surface of the cover body 210 or on the outer side surface of the cover body 210, that is, the second bending portion 118 of the cover plate 110 can abut against the inner side surface of the cover body 210, and the second bending portion 118 of the cover plate 110 can also abut against the outer side surface of the cover body 210, and the specific situation is not limited here. Similarly, when the second edge 211 of the cover body 210 is provided with the second bending portion 118, the first edge 111 of the cover plate 110 has the mating surface 216, and the mating surface 216 can be located on the inner side surface of the cover plate 110 or on the outer side surface of the cover plate 110, that is, the second bending portion 118 of the cover body 210 can abut against the inner side surface of the cover plate 110, and the second bending portion 118 of the cover body 210 can also abut against the outer side surface of the cover plate 110, and the specific situation is not limited here. By adopting the abutment of the second bending portion 118 and the mating surface 216, there is no gap or a small gap between the cover plate 110 and the cover body 210, and the high-temperature flue gas generated by the combustion of the gas in the combustion chamber 121 is not easy to leak from between the cover plate 110 and the cover body 210, and the cold air outside the cover body 210 is not easy to enter the cover body 210 to increase the load of the fan assembly 200. In this way, it is beneficial to improve the heat exchange efficiency of the gas equipment 10, and also reduces the emission of unburned carbon monoxide, improving the heat exchange efficiency and use safety of the gas equipment 10.

[0063] Please refer to Figures 6 to 8, in one embodiment, the first edge 111 is provided with a second bending portion 118 extending towards the cover 210. The inner side of the second edge 211 has a mating surface 216. The second bending portion 118 is arranged inside the cover 210 and abuts against the mating surface 216. The second bending portion 118 and the barb 114 are arranged side by side along the extending direction of the first edge 111.

[0064] It can be understood that the second bending portion 118 and the barb 114 are arranged side by side. When assembling the cover plate 110, the second bending portion 118 is abutted against the mating surface 216 inside the cover 210 along the preset assembly direction, and the barb 114 is clamped in the clamping hole 214 on the cover 210 along the preset assembly direction. In this way, the assembly is simple and convenient. At the same time, the assembly efficiency is improved, the assembly gap is reduced, the structure of the gas equipment 10 is simplified, and the manufacturing cost is reduced.

[0065] In one embodiment, the first edge 111 is provided with a plurality of the barbs 114 and a plurality of the second bending portions 118. The plurality of barbs 114 and the plurality of second bending portions 118 are arranged at intervals along the extending direction of the first edge 111. With such an arrangement, that is, during the forming process of the plurality of barbs 114, they do not interfere with the plurality of second bending portions 118. The plurality of second bending portions 118 respectively abut against the mating surface 216 inside the cover 210. The deformation amount of a single second bending portion 118 has a relatively small impact on the overall cover plate 110, which is beneficial to improving the tightness of the abutment between the edge of the cover plate 110 and the edge of the cover 210, reducing the risk of leakage of high-temperature flue gas inside the cover 210, and the plurality of barbs 114 improve the assembly stability of the cover plate 110.

[0066] In one embodiment, the first edge 111 is further provided with a second connecting portion 113 connected to the cover 210. The second connecting portion 113 is located between the plurality of barbs 114 and / or between the plurality of second bending portions 118. The second connecting portion 113 is arranged at intervals from the barb 114 and the second bending portion 118. With such an arrangement, that is, the second connecting portion 113 is arranged at intervals from the barb 114, and the second connecting portion 113 is arranged at intervals from the second bending portion 118. The second connecting portion 113, the barb 114 and the second bending portion 118 are arranged side by side at intervals along the extending direction of the first edge 111, and the three do not affect each other. The deformation amount of any one of the second connecting portion 113, the barb 114 and the second bending portion 118 has a relatively small impact on the overall installation of the cover plate 110. In this way, the tightness of the abutment between the edge of the cover plate 110 and the edge of the cover 210 is improved.

[0067] In one embodiment, the cover plate 110 is located on the front side of the combustion heat exchange assembly 100; and / or, the inner side surface of the cover plate 110 is recessed in a direction away from the combustion chamber 121 to form a mounting groove for mounting the heat insulation member.

[0068] It can be understood that the cover plate 110 is located on the front side of the combustion heat exchange assembly 100, which is convenient for operators or automated equipment to assemble with the cover body 210 along the preset assembly direction during assembly. The inner side surface of the cover plate 110 forms a mounting groove recessed in a direction away from the combustion chamber 121, and the mounting groove is used for mounting the heat insulation member. In this way, the distance between the heat insulation member and the flame is increased, which is beneficial to improving the service life of the heat insulation member and also improves the utilization rate of the cover plate 110.

[0069] Furthermore, the heat insulation member is made of a heat-resistant and low-thermal-conductivity heat insulation material, such as but not limited to asbestos, heat insulation cotton, or micro-nano heat insulation board, etc. The setting of the heat insulation member reduces the heat conduction and heat radiation losses of the high-temperature flue gas in the combustion heat exchange assembly 100.

[0070] Please refer to Figures 1 to 4 , in one embodiment, the combustion heat exchange assembly 100 includes a combustion assembly 120 and a heat exchanger 130. The combustion assembly 120 has the combustion chamber 121, the heat exchanger 130 is disposed above the combustion chamber 121, the heat exchanger 130 includes a heat exchange assembly 131 and two end plates 132 disposed at both ends of the heat exchange assembly 131. A first mounting portion 133 is respectively provided at the top end of each end plate 132, and the cover body 210 is provided with a first fitting portion 217 corresponding to each first mounting portion 133, and the first mounting portion 133 is in sealing cooperation with the first fitting portion 217.

[0071] It can be understood that in the gas equipment 10, the cover body 210 of the fan assembly 200 covers the top of the heat exchanger 130. The two end plates 132 of the heat exchanger 130 can position and support the cover body 210. The first fitting portion 217 at the bottom end of the cover body 210 abuts against the first mounting portion 133 at the top end of the end plate 132, and the first fitting portion 217 is in sealing cooperation with the first mounting portion 133. In this way, the sealing performance between the cover body 210 and the heat exchanger 130 is good, and the flue gas flowing through the heat exchanger 130 can all enter the cover body 210 to prevent flue gas leakage, ensuring that there is enough oxygen during gas combustion, with good combustion conditions and stable flue gas emissions. As for the sealing cooperation manner between the first mounting portion 133 and the first fitting portion 217, it includes but is not limited to: the first mounting portion 133 is in close fit with the first fitting portion 217; or, a sealing member is provided between the first mounting portion 133 and the first fitting portion 217, which can be specifically set according to needs.

[0072] Please refer to Figure 3 andFigure 4 In one embodiment, the first assembly portion 217 includes a first folded edge 218, and the first folded edge 218 is extended toward a side away from the cover body 210. The first mounting portion 133 includes a support plate 134 and a second folded edge 135 corresponding to the first folded edge 218. The second folded edge 135 is arranged on a side of the support plate 134 away from the end plate 132 and extends upward. The first folded edge 218 is abutted and sealed against the support plate 134, and the second folded edge 135 is located on the outer side of the first folded edge 218.

[0073] It can be understood that the top of each end plate 132 is respectively provided with a support plate 134 extending toward the side away from the other end plate 132, and the edge of the cover body 210 is provided with a first folded edge 218 corresponding to each support plate 134. The cover body 210 is abutted against the support plate 134 through the first folded edge 218. The first folded edge 218 and the support plate 134 are tightly fitted to achieve a sealed fit, and the outer edge of the support plate 134 away from the end plate 132 is also provided with a second folded edge 135. The second folded edge 135 can limit the first folded edge 218 to ensure that the cover body 210 is stably installed between the two second folded edges 135 of the two end plates 132, thereby improving the stability of the cover body 210 installed on the heat exchanger 130.

[0074] In one embodiment, a third folded edge 219 extending upward is provided on a side of the first folded edge 218 away from the cover body 210, and the third folded edge 219 is provided on the inner side of the second folded edge 135. It can be understood that the third folded edge 219 can be provided in close contact with the second folded edge 135, and the provision of the third folded edge 219 is conducive to increasing the contact area between the first mounting portion 133 and the first assembly portion 217, thereby improving the sealing performance, and the second folded edge 135 can limit the third folded edge 219, so as to improve the stability of the cover body 210 installed on the heat exchanger 130.

[0075] In one embodiment, a seal is provided between the first folded edge 218 and the support plate 134. This arrangement further improves the sealing performance between the cover body 210 and the end plate 132, so that the smoke flowing through the heat exchanger 130 can all enter the cover body 210 to prevent smoke leakage, and the cold air outside the cover body 210 is not easy to enter the cover body 210 and increase the load of the fan assembly 200, which is conducive to improving the heat exchange efficiency of the gas device 10.

[0076] See also Figure 7 and Figure 8, the present utility model also provides a cover plate 110, which is applied to a gas device 10. The gas device 10 includes a fan assembly 200. The cover plate 110 has a first edge 111, and the first edge 111 is provided with a first connecting portion 112 and a second bending portion 118. The first connecting portion 112 is used for limiting and clamping connection with the cover 210 of the fan assembly 200, and the second bending portion 118 is used for abutting against the inner side surface of the cover 210 of the fan assembly 200.

[0077] Specifically, the cover plate 110 can be used for the gas device 10, and the gas device 10 includes, but is not limited to, gas water heaters, gas water heating boilers, etc. For example, in this embodiment, the gas device 10 specifically relates to a forced-draft gas water heater. The gas device 10 includes a combustion heat exchange assembly 100 and a fan assembly 200. The combustion heat exchange assembly 100 includes a combustion assembly 120 and a heat exchanger 130. The combustion assembly 120 has a combustion chamber 121, and the heat exchanger 130 is disposed above the combustion chamber 121. The fan assembly 200 includes a cover 210 and a fan body, and the cover 210 can cover the top of the heat exchanger 130. When the gas device 10 operates, the fan assembly 200 operates to generate a negative pressure in the combustion chamber 121. The gas in the combustion chamber 121 burns to generate high-temperature flue gas. The high-temperature flue gas is continuously conveyed upward under the action of the fan assembly 200 and exchanges heat with the heat exchanger 130 and then enters the cover 210. The high-temperature flue gas heats the cold water flow path of the heat exchanger 130, and the cover 210 plays a role in gathering the flue gas. Finally, the flue gas is discharged from the smoke exhaust port of the cover 210.

[0078] Furthermore, the combustion assembly 120 includes a cover plate 110. One end of the cover plate 110 close to the cover 210 has a first edge 111. The first edge 111 is provided with a first connecting portion 112, and the first connecting portion 112 is in limiting and clamping connection with the cover 210, which is beneficial to improving the assembly efficiency of the cover plate 110. Moreover, the first edge 111 is provided with a second bending portion 118, and the second bending portion 118 abuts against the inner side surface of the cover 210, so that the edge of the cover plate 110 is closely matched with the cover 210. The high-temperature flue gas generated by the combustion of the gas in the combustion chamber 121 is not easily leaked from between the cover plate 110 and the cover 210, reducing the risk of high-temperature flue gas leakage, and thus being beneficial to improving the heat exchange efficiency of the gas device 10. Optionally, the cover plate 110 is located on the front side of the combustion chamber 121, which is convenient for installing the cover plate 110.

[0079] Among them, for the specific structure of the cover plate 110, reference can be made to the structure of the cover plate 110 of the gas device 10 in the above embodiment. Since the cover plate 110 of this solution adopts all the technical solutions of the above embodiment, it at least has all the beneficial effects brought by the technical solutions of the above embodiment, and will not be elaborated here one by one.

[0080] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A gas equipment, characterized in that: include: A combustion heat exchange assembly having a combustion chamber; as well as A fan assembly, comprising a cover body, the cover body being arranged on the combustion heat exchange assembly and communicating with the combustion chamber; The combustion heat exchange assembly includes a cover plate, the cover plate has a first edge at one end close to the cover body, the cover body has a second edge corresponding to the first edge, the first edge abuts against the second edge, the first edge is provided with a first connecting portion, the second edge is provided with a first matching portion, and the first connecting portion is limitedly engaged with the first matching portion.

2. The gas equipment according to claim 1, characterized in that: The first edge is further provided with a second connecting portion, the cover body is provided with a second matching portion corresponding to the second connecting portion, and the second connecting portion abuts against the cover body and is connected to the second matching portion.

3. The gas equipment according to claim 2, characterized in that: The second connecting portion and the second matching portion are correspondingly provided with assembly holes for the fastener to pass through, and the second connecting portion is locked to the second matching portion by the fastener.

4. The gas equipment according to claim 1, characterized in that: One of the first connecting portion and the first matching portion includes a barb, and the other includes a clamping hole, and the barb is clamped with the clamping hole.

5. The gas equipment according to claim 4, characterized in that: The other one of the first connecting portion and the first matching portion further includes a first bending portion, and the first bending portion is inserted into the barb.

6. The gas equipment according to claim 5, characterized in that: The first edge is provided with the barb, the opening direction of the barb is toward the outside of the cover body, the cover body is provided with the clamping hole, the second edge is provided with the first bending portion extending toward the inside of the cover body, and the front end of the barb extends out of the cover body from the clamping hole.

7. The gas equipment according to claim 5, characterized in that: The barb includes an extension section, a first limiting section and a second limiting section connected in sequence, the connection between the extension section and the first limiting section is bent, the connection between the first limiting section and the second limiting section is bent, the second limiting section abuts against the first bending portion, and at least a portion of the second limiting section is clamped in the clamping hole.

8. The gas equipment according to claim 1, characterized in that: One of the first edge and the second edge is provided with a second bent portion extending in the up-down direction, and the other edge has a matching surface opposite to the second bent portion, and the second bent portion abuts against the matching surface.

9. The gas equipment according to claim 4, characterized in that: The first edge is provided with a second bending portion extending toward the cover body, the inner side of the second edge has a matching surface, the second bending portion is provided on the inner side of the cover body and abuts against the matching surface, and the second bending portion and the barb are arranged side by side along the extension direction of the first edge.

10. The gas equipment according to claim 9, characterized in that: The first edge is provided with a plurality of the barbs and a plurality of the second bending portions, and the plurality of the barbs and the plurality of the second bending portions are arranged at intervals along the extending direction of the first edge.

11. The gas device according to claim 10, characterized in that: The first edge is also provided with a second connection portion connected to the cover body, the second connection portion is located between the plurality of barbs and / or between the plurality of second bending portions, and the second connection portion is spaced apart from the barbs and the second bending portions.

12. The gas equipment according to any one of claims 1 to 11, characterized in that: The combustion heat exchange component includes a combustion component and a heat exchanger, the combustion component has the combustion chamber, the heat exchanger is arranged above the combustion chamber, the heat exchanger includes a heat exchange component and two end plates arranged at both ends of the heat exchange component, the top of each end plate is respectively provided with a first mounting portion, the cover body is provided with a first assembly portion corresponding to each first mounting portion, and the first mounting portion is sealed and matched with the first assembly portion.

13. The gas device according to claim 12, characterized in that: The first assembly portion includes a first folded edge, which extends toward a side away from the cover body. The first mounting portion includes a support plate and a second folded edge corresponding to the first folded edge. The second folded edge is arranged on a side of the support plate away from the end plate and extends upward. The first folded edge is abutted and sealed against the support plate, and the second folded edge is located on the outer side of the first folded edge.

14. The gas device according to claim 13, characterized in that: A third folded edge extending upward is provided on a side of the first folded edge facing away from the cover body, and the third folded edge is provided on the inner side of the second folded edge; And / or, a seal is provided between the first folded edge and the support plate.

15. A cover plate, applied to a gas device, wherein the gas device comprises a fan assembly, characterized in that: The cover plate has a first edge, the first edge is provided with a first connecting portion and a second bending portion, the first connecting portion is used for being position-limitedly engaged with the cover body of the fan assembly, and the second bending portion is used for abutting against the inner side surface of the cover body of the fan assembly.

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