CN114562817A

CN114562817A - Gas equipment and gas heater

Info

Publication number: CN114562817A
Application number: CN202210045565.6A
Authority: CN
Inventors: 李龙; 杜小文; 黄官贤; 梁国荣
Original assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2021-01-15
Filing date: 2022-01-15
Publication date: 2022-05-31
Also published as: CN217876480U; CN217785488U; WO2022152278A1; AU2022207584A1; WO2022152279A1; CN114562818A

Abstract

The invention discloses a gas device, which comprises: the exhaust hood comprises a frame body, a cover plate, a smoke hood and a heat exchanger, wherein the cover plate is arranged on the frame body through a front side cover, the heat exchanger is arranged on the frame body, the smoke hood is arranged at the top of the frame body, and the frame body, the cover plate, an end plate of the heat exchanger and the smoke hood are matched to define an installation cavity; a burner fitted within the mounting cavity. According to the gas equipment provided by the embodiment of the invention, the installation cavity is defined by the frame body, the smoke hood and the cover plate, and the heat exchange parts of the combustor and the heat exchanger are installed in the installation cavity, so that a plurality of parts are integrally arranged, the assembly structure and the sealing structure are simplified, the production efficiency is improved, the automatic production is realized, the heat loss and the waste gas leakage of the gas equipment in the working process are reduced, the energy consumption is reduced, and the safety is improved. In addition, the structure of each component of the gas equipment is suitable for front installation and modularization, and the assembly efficiency is improved.

Description

Gas equipment and gas heater

Cross Reference to Related Applications

The present application claims priority from the chinese patent application No. 202120120973.4 filed on 15.01.2021, 15.01.u.s.a. by chef appliances manufacturing limited of turnip lake U.S. and U.S. group, the entire contents of which are incorporated herein by reference.

Technical Field

The invention relates to the technical field of water heaters, in particular to a gas device and a gas water heater.

Background

In the related art, the burner, the heat exchanger, the hood, and the blower of the gas appliance are generally independent from each other, and need to be assembled from multiple directions and at multiple angles, and a large number of screws are required for fixing and sealing. The complex assembly mode is difficult to realize automatic production, low in production efficiency and inconvenient to maintain after sale.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a gas appliance, in which a plurality of components are integrally provided, an assembly structure and a sealing structure are simplified, and an improvement in production efficiency is facilitated.

The invention also provides a gas water heater with the gas equipment.

According to the embodiment of the invention, the gas equipment comprises: the exhaust hood comprises a frame body, a cover plate, a smoke hood and a heat exchanger, wherein the cover plate is arranged on the frame body through a front side cover, the heat exchanger is arranged on the frame body, the smoke hood is arranged at the top of the frame body, and the frame body, the cover plate, an end plate of the heat exchanger and the smoke hood are matched to define an installation cavity; a burner fitted within the mounting cavity.

According to the gas equipment provided by the embodiment of the invention, the installation cavity is defined by the frame body, the smoke hood and the cover plate, and the heat exchange parts of the combustor and the heat exchanger are installed in the installation cavity, so that a plurality of parts are integrally arranged, the assembly structure and the sealing structure are simplified, the production efficiency is improved, the automatic production is realized, the heat loss and the waste gas leakage of the gas equipment in the working process are reduced, the energy consumption is reduced, and the safety is improved. In addition, the structure of each component of the gas equipment is suitable for front installation and modularization, and the assembly efficiency is improved.

According to some embodiments of the invention, the frame includes a left side panel, a rear side panel, a right side panel and a bottom panel, the hood front portion is formed with a roof mounting surface that mates with the cover panel upper end that mates with the roof mounting surface.

According to some embodiments of the invention, the left and right side plates of the frame body are bent to form a first side mounting surface for being matched with the cover plate, the heat exchanger is arranged at the upper end of the left and right side plates of the frame body, second side mounting surfaces for being matched with the cover plate are formed on the left and right end plates of the heat exchanger, and the left and right edges of the cover plate are matched and connected with the first side mounting surface and the second side mounting surface.

According to some embodiments of the invention, the bottom plate of the frame body is provided with a bottom plate flange extending upwards or downwards, the bottom plate flange forms a bottom mounting surface, and the bottom of the cover plate is matched and connected with the bottom mounting surface.

According to some embodiments of the invention, connecting through holes are provided between the top mounting surface, the first side mounting surface, the second side mounting surface and the bottom mounting surface and the cover plate for connection by fasteners; and/or clamping hooks or clamping grooves are arranged between the top mounting surface, the first side mounting surface, the second side mounting surface and the bottom mounting surface and the cover plate so as to be connected through a hook groove structure.

According to some embodiments of the invention, the rear part of the smoke cover is formed with a rear mounting surface matched with the top of the rear side plate of the frame body, and a connecting through hole is arranged between the rear mounting surface and the rear side plate so as to be connected through a fastener.

According to some embodiments of the invention, the burner has a bottom side plate, the rear end of the bottom side plate is provided with a downward extending downward flanging, and the downward flanging is attached to the rear side plate of the frame body to form a burner mounting surface matched with the rear side plate of the frame body.

According to some embodiments of the invention, the cover plate is provided with one or more reinforcing structures arranged close to the connecting through holes.

According to some embodiments of the invention, the left and right side plates of the smoke cage are welded with the left and right end plates of the heat exchanger, respectively; or, the lower edge of the left side board of petticoat pipe and the lower edge of right side board all are equipped with first connecting portion, the left end board and the right-hand member board of heat exchanger all are equipped with first connection cooperation portion, wherein, first connecting portion with first connection cooperation portion is through trip and turn-ups joint.

According to some embodiments of the invention, the frame body comprises a left side plate, a rear side plate, a right side plate and a bottom plate, the left side plate and the right side plate are lower than the rear side plate, the upper edge of the left side plate and the upper edge of the right side plate of the frame body are both provided with second connecting parts, the lower edge of the left end plate and the lower edge of the right end plate of the heat exchanger are both provided with second connecting matching parts, and the second connecting parts and the second connecting matching parts are connected in a clamping mode through clamping hooks and flanges or in a matching mode through fasteners.

According to some embodiments of the present invention, the fan unit is mounted on a bottom plate of the frame and located outside the mounting cavity, the bottom plate of the frame is provided with a fan interface, an air outlet of the fan unit corresponds to the fan interface, the fan unit is provided with a first positioning lug, a bottom surface of the bottom plate extends downwards to be provided with a second positioning lug, and the first positioning lug and the second positioning lug are locked by a fastener.

According to some embodiments of the invention, a bottom plate of the frame body is provided with a fan interface, at least one side plate of the installation cavity is provided with a cooling and heat insulating plate at intervals, so as to form an air cooling channel, the air cooling channel is communicated with the fan interface, an inlet of the at least one air cooling channel is lower than a combustion surface of the combustor, and at least a part of air flow flowing out of an outlet blows towards the bottom of the heat exchanger.

According to some embodiments of the invention, the cooling insulation board comprises a first cooling insulation board, the first cooling insulation board is arranged between the left side board and/or the right side board of the frame body at intervals so as to define a first air cooling channel, and the bottom of the first air cooling channel is provided with an inlet and the top of the first air cooling channel is provided with an outlet; the cooling heat insulation plates comprise second cooling heat insulation plates, the rear side plate of the frame body and/or the cover plate are/is provided with the second cooling heat insulation plates at intervals so as to limit a second air cooling channel, and the second cooling heat insulation plates are provided with a plurality of outlets which are distributed at intervals along the vertical direction.

According to some embodiments of the invention, the second cooling insulation panel has a plurality of cut-off sections, the cut-off sections have a transverse extension section and a longitudinal extension section, the transverse extension section extends from inside to outside, the starting end of the longitudinal extension section is connected with the outer end of the transverse extension section, the longitudinal extension section extends obliquely upwards in a folded manner, and each cut-off section has an outlet of the second air-cooled channel.

According to some embodiments of the invention, the junction of the transverse extension and the longitudinal extension of the uppermost cut-off section of the second insulating board is in contact fit with the rear side plate of the frame body and/or the cover plate, and the junction of the transverse extension and the longitudinal extension of the other cut-off section is spaced apart from the rear side plate of the frame body and/or the cover plate; and/or a part of the second cold air channel wraps the periphery of the heat exchanger.

According to some embodiments of the invention, the second cooling insulation panel extends to a side of the heat exchanger toward a rear side panel of the frame and/or a top of the cover plate to form an insulation portion on front and rear sides of the heat exchanger.

According to some embodiments of the invention, a left side plate of the frame body is provided with a left supporting flange for supporting a left end plate of the heat exchanger, and an outlet of the first air cooling channel corresponding to the left side plate of the frame body is flush with the left supporting flange in height; the right side plate of the frame body is provided with a right supporting flange for supporting the right end plate of the heat exchanger, and the outlet of the first air cooling channel corresponding to the right side plate of the frame body is flush with the right supporting flange in height.

According to some embodiments of the invention, the installation cavity comprises a first cavity between a bottom side plate of the combustor and a bottom plate of the frame body and a second cavity between the combustor and the heat exchanger, the gas equipment comprises a fan assembly, an air outlet of the fan assembly is communicated with the middle of the first cavity, and part of air flow entering the first cavity flows upwards to the top of the second cavity through the first air cooling channel.

According to some embodiments of the invention, the installation cavity comprises a first cavity between a bottom side plate of the combustor and a bottom plate of the frame body and a second cavity between the combustor and the heat exchanger, the gas equipment comprises a fan assembly, an air outlet of the fan assembly is communicated with the middle part of the first cavity, and part of air flow entering the first cavity flows upwards to multiple positions of the second cavity along the longitudinal direction through the second air-cooled channel.

According to some embodiments of the invention, the left side and the right side of the bottom side plate of the burner are formed with downward extending flanges which are in fit contact with the first cooling and heat insulating plates arranged at the left side and the right side of the frame at intervals, and the air inlet of the first air cooling channel is arranged at the lower part of the bottom side plate of the burner.

According to some embodiments of the invention, the left side plate, the right side plate and the rear side plate of the frame body are integrally formed into a frame body, the bottom plate of the frame body is riveted with the bottom of the frame body, and the cover plate is connected with the frame body and the bottom plate of the frame body.

According to some embodiments of the invention, the left side plate and the right side plate of the frame body are respectively provided with a first cooling heat insulation plate at intervals so as to form a first air cooling channel, the rear side plate of the frame body is provided with a second cooling heat insulation plate at intervals so as to form a second air cooling channel, and the first cooling heat insulation plate and the second cooling heat insulation plate are integrally formed.

The gas water heater according to the embodiment of the invention comprises the gas equipment according to the embodiment of the invention.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an exploded view of a gas fired appliance according to some embodiments of the present invention;

FIG. 2 is a schematic block diagram of a gas fired appliance according to some embodiments of the present invention;

FIG. 3 is an enlarged schematic view of FIG. 2 at circle A;

figure 4 is a structural schematic of a smoke cage according to some embodiments of the present invention;

FIG. 5 is a schematic diagram of a heat exchanger according to some embodiments of the invention;

FIG. 6 is a schematic structural view of a frame according to some embodiments of the invention;

FIG. 7 is a schematic structural view of a cover plate according to some embodiments of the invention;

FIG. 8 is a schematic structural view of a combustor according to some embodiments of the present invention;

FIG. 9 is a schematic structural view of a gas distribution stem according to some embodiments of the invention;

FIG. 10 is a schematic structural view of a fan assembly according to some embodiments of the present invention;

FIG. 11 is a schematic structural view of a fan assembly according to some embodiments of the present invention;

FIG. 12 is a schematic view of a partial connection of a fan section and frame according to some embodiments of the invention;

FIG. 13 is a schematic view of a partial connection of a blower unit and a frame according to some embodiments of the invention;

FIG. 14 is a cross-sectional view of a gas fired appliance according to some embodiments of the invention;

FIG. 15 is a cross-sectional view of a gas fired device according to some embodiments of the present invention;

FIG. 16 is an enlarged schematic view of FIG. 15 at circle B;

FIG. 17 is an exploded view of a gas fired appliance according to other embodiments of the present invention;

FIG. 18 is a schematic structural view of a gas-fired appliance according to further embodiments of the present invention;

FIG. 19 is a structural schematic diagram of a smoke cage and heat exchanger according to other embodiments of the present invention;

FIG. 20 is a schematic view of a partial connection of a heat exchanger and frame according to further embodiments of the invention;

FIG. 21 is a schematic structural diagram of a frame according to further embodiments of the present invention;

FIG. 22 is a schematic diagram of a cover plate according to further embodiments of the present invention;

FIG. 23 is a schematic view of a partial connection of a cover plate and a frame according to further embodiments of the invention;

FIG. 24 is a schematic view of a partial connection of a cover plate and smoke cage according to further embodiments of the present invention;

FIG. 25 is a cross-sectional view of a gas fired appliance according to other embodiments of the present invention;

FIG. 26 is a cross-sectional view of a gas fired device according to further embodiments of the present invention;

FIG. 27 is a cross-sectional view of a gas fired device according to other embodiments of the present invention.

Reference numerals: a gas appliance 100; a frame body 10; a frame body flanging 101; a bottom plate flange 102; a sixth connecting via 606; a first positioning through hole 701; a second positioning through hole 702; a third positioning through hole 703; positioning the flanging 11; the left side plate 12 of the frame 10; a rear side plate 13 of the frame body 10; the right side plate 14 of the frame 10; a bottom plate 15 of the frame 10; a recess 151; a second connecting portion 16; a fan interface 17; a second positioning lug 18; a strip-shaped positioning hole 19; a cover plate 20; a first connection via 601; a second connecting via 602; a third connecting via 603; a first hook 21; a positioning notch 22; a reinforcing rib 23; a limiting flange 24; a limiting notch 241; a hood 30; a fourth connecting via 604; a fourth positioning through hole 704; a first flange 31; a first connection portion 32; a top mounting surface 33; a heat exchanger 40; a fifth connecting through-hole 605; a fifth positioning via 705; a left end plate 41; an upper flanging 411; a lower flange 412; a front flange 413; a rear flange 414; a right end plate 42; the first connection fitting portion 43; a second connection fitting portion 44; a first connecting pipe 45; a second connection pipe 46; a combustor 50; a bottom side plate 51; a burner flange 52; a through hole 53; a sixth positioning via 706; a seventh connecting through hole 607; a gas distributing rod 60; an eighth connecting via 608; a seal 61; a fan assembly 70; a first positioning lug 71; a positioning strip 72; an air outlet 73; cooling the insulation panel 80; the first cooling insulation panel 81; a second cooling insulation panel 82; a cutoff section 821; a laterally extending section 822; a longitudinally extending section 823; an air-cooled channel 90; a first air-cooling passage 91; an inlet 911 of the first air-cooling passage 91; an outlet 912 of the first air-cooling duct 91; a second air-cooling passage 92; the inlet 921 of the second air-cooling passage 92; an outlet 922 of the second air-cooling duct 92; and a heat insulating section 93.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A gas appliance 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

Referring to fig. 1 to 2 and 16 to 17, a gas appliance 100 according to an embodiment of the present invention may include: frame 10, cover plate 20, smoke cage 30, heat exchanger 40 and burner 50.

Specifically, as shown in fig. 1 to 2 and 16 to 17, the cover plate 20 is provided to the frame 10 by a front side cover, the heat exchanger 40 is mounted to the frame 10, and the hood 30 is provided to the top of the frame 10 to constitute a housing structure. It should be noted that the terms "front side" and "top" are used herein based on the orientation shown in the drawings, and do not necessarily mean that the components must have a particular orientation, be constructed and operated in a particular orientation. Of course, the orientation during actual use and assembly may also be the same as that shown in the drawings. The hood 30 is mounted on the top to facilitate the smoke exhausting function of the gas appliance 100.

In addition, the frame body 10, the cover plate 20, and end plates (such as the left end plate 41 and the right end plate 42) of the heat exchanger 40 cooperate with the smoke cage 30 to define a mounting cavity, the components of the heat exchanger 40 for heat exchange are located in the mounting cavity, and the burner 50 can be assembled in the mounting cavity to construct a product structure of the gas appliance 100. That is, the frame body 10 constitutes a basic skeleton of the gas appliance 100, the top and front of the basic skeleton may be opened, and the hood 30 and the cover plate 20 block different sides of the frame body 10, respectively. And the burner 50 and the heat exchanger 40 are located in the installation cavity defined by the frame 10, the cover plate 20, the end plate of the heat exchanger 40 and the smoke hood 30, so that all functional components of the gas equipment 100 are integrated in the same closed space, the assembly is convenient, the heat loss and the waste gas leakage of the gas equipment 100 in the working process are reduced, the energy consumption is reduced, and the safety is improved.

In some embodiments, as shown in fig. 1 and 17, the burner 50 is assembled at the bottom of the installation cavity, and the heat exchanger 40 is assembled at the top of the installation cavity, the installation cavity not only provides installation space, but also provides combustion space and heat exchange space, so that the structure is simplified, and the sealing of the combustion and heat exchange paths can be realized by realizing the sealing of the installation cavity, and the sealing structure and the assembling structure are simpler, thereby being beneficial to improving the production efficiency and realizing automatic production.

In some embodiments, as shown in fig. 6 and 21, the frame 10 has a top opening and a front opening, such that the smoke cage 30, the cover plate 20, the burner 50, and the heat exchanger 40 can be moved from the top or front side to a position to mate with the frame 10, facilitating assembly.

In some embodiments, as shown in fig. 1, 6, 17 and 21, the heat exchanger 40 can be shaped to match the top opening, i.e., the top opening of the frame 10 is substantially closed when the heat exchanger 40 is installed in the installation cavity. In some embodiments, as shown in fig. 1, 6, 17, and 21, the end plates of the heat exchanger 40 may cooperate with the frame 10, the cover plate 20, and the hood 30 to form a portion of the housing, and the cooperation of the frame 10, the cover plate 20, the hood 30, and the end plates of the heat exchanger 40 may define a sealed cavity, thereby achieving structural integrity and sealing of the gas appliance 100, while achieving assembly of the heat exchanger 40 and facilitating plumbing of the heat exchanger 40.

As shown in fig. 2 and 18, the first connection pipe 45 and the second connection pipe 46 of the heat exchanger 40 may directly extend from the end plate of the heat exchanger 40 to the outside of the casing without providing a hole in the frame 10. In some embodiments, the first connection pipe 45 and the second connection pipe 46 may be connected to the left end plate 41 and the right end plate 42 of the heat exchanger 40, respectively, and are used for flowing in and flowing out of the heat exchange medium, so that the pipeline installation is simpler and more convenient, the distribution of the heat exchange pipeline is simpler, and more sufficient heat exchange of the heat exchange medium in the heat exchanger 40 is facilitated.

In some embodiments of the present invention, as shown in fig. 1-2 and 17-18, the frame 10 may include a left side plate 12, a rear side plate 13, a right side plate 14, and a bottom plate 15, the left side plate 12 and the right side plate 14 have a height lower than that of the rear side plate 13, so that the left end plate 41 of the heat exchanger 40 may be installed between the left side plate 12 and the hood 30, the right end plate 42 of the heat exchanger 40 may be installed between the right side plate 14 and the hood 30, the left side plate 12 of the frame 10, the left end plate 41 of the heat exchanger 40, and the left side plate of the hood 30 are engaged with each other to form a left side wall of the gas appliance 100, and the right end plate 42 of the heat exchanger 40, the right side plate 14 of the frame 10, and the right side plate of the hood 30 are engaged with each other to form a right side wall of the gas appliance 100, which depends on each other, and has good stability.

In addition, the cover plate 20 is connected with the smoke cage 30, the left and

right end plates

41 and 42 of the heat exchanger 40, the left side plate 12, the right side plate 14 and the bottom plate 15, so that the cover plate 20 can be formed into a front side wall of the gas equipment 100, after the assembly of the cover plate 20 is completed, the smoke cage 30, the heat exchanger 40, the frame 10 and other structures in the installation cavity can be shielded, the front side wall of the gas equipment 100 is complete in structure, and the gas equipment 100 is formed into a more complete integral structure. And the rear side plate 13 of the frame 10 forms a rear side wall of the gas appliance 100, and a front side wall, a left side wall, a right side wall and the rear side wall of the gas appliance 100 are mutually connected and enclose in a circumferential direction, so that the stability is further improved.

In some embodiments, as shown in fig. 2 and 18, the upper end of the cover plate 20 is higher than the lower end of the hood 30, and the lower portion of the cover plate 20 is connected to the lower portion of the frame 10, so that the cover plate 20 can more completely cover the hood 30, the heat exchanger 40, the frame 10, and various components in the installation chamber, and the appearance of the gas appliance 100 is complete. In some embodiments, the upper end of the cover panel 20 may be flush with or extend upwardly beyond the upper end of the front panel of the hood 30, and the lower end of the cover panel 20 may be flush with or extend downwardly beyond the lower end of the bottom panel 15 of the frame 10.

In some embodiments, as shown in fig. 1 and 17, four edges of the cover plate 20 may be respectively provided with a limiting flange 24 extending rearward, wherein the upper limiting flange 24 may be located above the front side plate of the smoke hood 30, the left limiting flange 24 may be located on the left side of the left side plate 12 of the frame 10, the right limiting flange 24 may be located on the right side of the right side plate 14 of the frame 10, and the lower limiting flange 24 may be located on the lower side of the bottom plate 15 of the frame 10, so that the four limiting flanges 24 may limit the cover plate 20 from four different directions, so that the cover plate 20 is stably positioned, and the cover plate 20 is conveniently connected with the frame 10, the smoke hood 30, the heat exchanger 40, and other components.

In some embodiments, as shown in fig. 3 and 5, the lower edge of the left end plate 41 of the heat exchanger 40 may be provided with a downward flange 412, the left side limiting flange 24 of the cover plate 20 may be provided with a limiting notch 25, and after the assembly is completed, the end of the downward flange 412 may be inserted into the limiting notch 25, so as to further improve the limiting stability of the cover plate 20, the heat exchanger 40 and the frame 10. Of course, the lower edge of the right end plate 42 of the heat exchanger 40 and the right limiting flange 24 of the cover plate 20 can also be limited by the matching of the limiting notch 25 and the lower flange 412.

In some embodiments, the cover panel 20 is removably connected to the smoke cage 30, the left and

right end panels

41, 42 of the heat exchanger 40, the left and

right side panels

12, 14, and the bottom panel 15, such as by one or more of a snap-fit or threaded connection, to facilitate removal and later maintenance of the installed chamber components.

According to the gas equipment 100 provided by the embodiment of the invention, the frame body 10, the smoke hood 30 and the cover plate 20 define the installation cavity, and the combustor 50 and the heat exchange components of the heat exchanger 40 are installed in the installation cavity, so that the multiple components are integrally arranged, the assembly structure and the sealing structure are simplified, the production efficiency is improved, the automatic production is realized, the heat loss and the waste gas leakage of the gas equipment 100 in the working process are reduced, the energy consumption is reduced, and the safety is improved. In addition, the structure of each component of the gas equipment 100 is suitable for front installation and modularization, and the assembly efficiency is improved.

An assembly structure of components of the gas appliance 100 according to some embodiments of the present invention will be described below with reference to the accompanying drawings.

In some embodiments of the invention, as shown in fig. 1-7, the frame 10 includes a left side panel 12, a rear side panel 13, a right side panel 14, and a bottom panel 15, the hood 30 is formed at a front portion with a top mounting surface 33 that mates with the top of the cover panel 20, and the cover panel 20 is matingly connected at an upper end portion with the top mounting surface 33 at the front portion of the hood 30. Thereby facilitating the front installation of the cover plate 20 and improving the assembly efficiency.

The present invention is not particularly limited as to the manner of connection between the top mounting surface 33 and the cover plate 20. For example, the top mounting surface 33 and the upper end of the cover plate 20 may be provided with through holes, and the fasteners may penetrate through the through holes, so that the two may be connected by the fasteners, and the front assembly is more convenient and faster. For example, one of the top mounting surface 33 and the upper end of the cover plate 20 may include a hook, and the other may include a flange, so that the two are clamped by the hook and the flange, and the assembly structure is simple and firm.

In some embodiments of the present invention, as shown in fig. 1 to 7, left and right side plates of the frame body are bent to form a first side mounting surface for mating with the cover plate, the heat exchanger is mounted at upper ends of the left and right side plates of the frame body, second side mounting surfaces for mating with the cover plate are formed on left and right end plates of the heat exchanger, and left and right edges of the cover plate are in mating connection with the first side mounting surface and the second side mounting surface. The left and

right side plates

12 and 14 of the frame 10 are bent outward of the mounting cavity to form mounting surfaces (frame flanges 101 shown in fig. 6) for engaging with the cover plate 20, the heat exchanger 40 is mounted on the upper ends of the left and

right side plates

12 and 14 of the frame 10, and mounting portions (front flanges 413 shown in fig. 5) for engaging with the cover plate 20 are formed on the left and

right end plates

41 and 42 of the heat exchanger 40. This facilitates the front mounting of the cover plate 20, and improves the assembly efficiency.

The present invention is not limited to any particular manner of connecting the frame body 10 and the cover plate 20. For example, the mounting surface and the cover plate 20 may have through holes, and the fasteners may penetrate through the through holes, so that the two may be connected by the fasteners; the installation department can be equipped with the through-hole with apron 20, and the through-hole can be worn to locate by the fastener to make the two connect through the fastener, the assembly is more convenient, swift openly. For example, the mounting surface and the cover plate 20 may be clamped by a hook; the installation part and the cover plate 20 can be connected through a clamping hook, and the assembly structure is simple and firm.

In some embodiments, as shown in fig. 1-7, the front edges of the left side plate 12 and the right side plate 14 of the frame 10 are provided with frame flanges 101 extending leftwards or rightwards, and the frame flanges 101 are formed as mounting surfaces, in other words, the frame 10 flanges are provided with through holes, hooks or flanges for clamping, so as to facilitate reliable front mounting of the cover plate 20.

In some embodiments, as shown in fig. 1-7 and 17-22, the bottom plate of the frame body is provided with a bottom plate flange extending upwards or downwards, the bottom plate flange forms a bottom mounting surface, and the bottom of the cover plate is matched and connected with the bottom mounting surface. The bottom plate 15 of the frame 10 is provided with a bottom plate flange 102 extending upward or downward, and the bottom plate flange 102 is connected with the cover plate 20 through a fastener so as to lock the cover plate 20 with the frame 10. Connecting through holes are formed among the top mounting surface, the first side mounting surface, the second side mounting surface, the bottom mounting surface and the cover plate so as to be connected through fasteners; and/or clamping hooks or clamping grooves are arranged between the top mounting surface, the first side mounting surface, the second side mounting surface and the bottom mounting surface and the cover plate so as to be connected through a hook groove structure.

In some embodiments of the invention, as shown in fig. 1-7, the rear part of the smoke hood is provided with a rear mounting surface matched with the top of the rear side plate of the frame body, and a connecting through hole is arranged between the rear mounting surface and the rear side plate so as to be connected through a fastener. The hood 30 is formed at the rear with a rear mounting surface (a rear side wall of the hood 30 as shown in fig. 4) to be fitted to the rear side plate 13 of the frame 10, and the burner 50 is formed at the rear with a burner mounting surface (a burner flange 52 as shown in fig. 8) to be fitted to the rear side plate 13 of the frame 10. The rear mounting surface, the burner mounting surface, and the rear side plate 13 may be provided with through holes so that the rear mounting surface and the rear side plate 13, the burner mounting surface, and the rear side plate 13 may be connected by fasteners. Thereby realizing the integral installation from the front or the back and being beneficial to improving the assembly efficiency.

In some embodiments of the present invention, as shown in fig. 7, since the front-mounted structure is adopted and the cover plate is used as a separate mounting component, in order to avoid deformation of the cover plate during assembly, one or more reinforcing structures are provided on the cover plate near the connecting through-holes. Each installation through-hole department can be equipped with strengthening rib 23 on apron 20, and strengthening rib 23 can be formed through carrying out panel beating to the apron 20 and pressing the shape processing, and strengthening rib 23 is annular or arc, and the one-to-one ground sets up around the through-hole to improve the structural strength of through-hole department, thereby avoid apron 20 to take place to warp at the screw in-process of beating.

In some embodiments of the present invention, as shown in fig. 1 to 7, the cover plate 20 is provided with a first connecting through hole 601, a second connecting through hole 602, and a third connecting through hole 603, the front of the hood 30 is provided with a fourth connecting through hole 604, the heat exchanger 40 is provided with a fifth connecting through hole 605, and the front side edge of the frame 10 is provided with a sixth connecting through hole 606. Wherein, the first connecting through hole 601 and the fourth connecting through hole 604, the second connecting through hole 602 and the fifth connecting through hole 605, and the third connecting through hole 603 and the sixth connecting through hole 606 are respectively locked by fasteners. Wherein, the fastener can be a screw, a bolt, etc.

Therefore, the smoke hood 30, the frame body 10 and the heat exchanger 40 can be respectively assembled with the cover plate 20 from the front side of the cover plate 20, namely, the front assembly is realized, the screwing fixation from multiple directions is not needed, and the assembly process is simplified. For example, all the fasteners of the cover plate 20 can be simultaneously driven by a specific tool in a short time, so that automatic production is realized, the assembly time is greatly reduced, and the production efficiency is improved.

In some embodiments, as shown in fig. 1 and 4, the front panel of the smoke cage 30 may be provided with a fourth connecting through hole 604 to lock the cover plate 20 with the front panel of the smoke cage 30, and the smoke cage 30 may be shielded while sealing is performed.

In some embodiments, as shown in fig. 1 and 5, the front edge of the left end plate 41 and the front edge of the right end plate 42 of the heat exchanger 40 are provided with fifth connecting through holes 605, respectively. For example, the left end plate 41 and the right end plate 42 may respectively include a front flange 413, the front flange 413 is provided with a fifth connecting through hole 605 and is locked with the cover plate 20 through a fastener, so that the cover plate 20 shields the front flange 413 and simultaneously realizes sealing, and the axial direction of the fifth connecting through hole 605 is conveniently adjusted.

In some embodiments, as shown in fig. 1 and 6, the front edges of the left side plate 12, the right side plate 14 and the bottom plate 15 of the frame body 10 are respectively provided with a sixth connecting through hole 606. For example, the left side plate 12, the right side plate 14 and the bottom plate 15 respectively include a folded edge, the folded edge is provided with a sixth connecting through hole 606, and is locked with the cover plate 20 through a fastener, so that the cover plate 20 shields the folded edge and simultaneously realizes sealing, and the axial direction of the sixth connecting through hole 606 is adjusted conveniently.

In some embodiments, as shown in fig. 1 and 7, the first connecting via 601, the second connecting via 602, and the third connecting via 603 are coplanar. In other words, the axial directions of the first connecting through hole 601, the second connecting through hole 602 and the third connecting through hole 603 are the same, so that the fasteners matched with different connecting through holes can be assembled along the same direction, the assembling process is further simplified, and the tool can be assembled at the same time and efficiently. It should be noted that the number of each connecting through hole can be flexibly set according to the actual situation, and may be one or more, which are within the protection scope of the present invention, and only the locking requirement needs to be satisfied.

In some embodiments of the present invention, as shown in fig. 1 to 7, in order to improve the fitting stability of the hood 30 with the frame 10, the rear side plate 13 of the frame 10 is provided with a first positioning through hole 701, a second positioning through hole 702, and a third positioning through hole 703, the first positioning through hole 701 may be provided at an upper portion of the rear side plate 13 of the frame 10, the second positioning through hole 702 may be provided at a middle portion of the rear side plate 13 of the frame 10, and the third positioning through hole 703 may be provided at a lower portion of the frame 10. Correspondingly, the smoke cage 30 is provided with a fourth positioning through hole 704, the heat exchanger 40 is provided with a fifth positioning through hole 705, and the burner 50 is provided with a sixth positioning through hole 706. The first positioning through hole 701 and the fourth positioning through hole 704, the second positioning through hole 702 and the fifth positioning through hole 705, and the third positioning through hole 703 and the sixth positioning through hole 706 may be locked by fasteners, respectively. Wherein, the fastener can be a screw, a bolt, etc.

After the smoke hood 30, the heat exchanger 40 and the burner 50 are moved to the installation position, the fastening assembly can be performed from the front side or the rear side of the frame body 10, that is, the front assembly or the back assembly can be realized, the screwing fixation from multiple directions is not needed, and the assembly process is simplified. And three parts all link to each other with the posterior lateral plate 13 of framework 10, are favorable to making the fastener that corresponds can assemble simultaneously, can beat all fasteners of apron 20 simultaneously in the short time through specific frock for example, realize automated production, and greatly reduced assembly man-hour improves production efficiency.

In some embodiments, as shown in fig. 1 and 6, the rear side plate of the hood 30 is provided with the fourth positioning through holes 704 such that the axial direction of the fourth positioning through holes 704 extends substantially in the front-rear direction, and the rear side plate of the hood 30 may be located at the front side of the rear side plate 13 of the frame 10, completing the rear appearance of the hot gas apparatus and facilitating assembly. As shown in fig. 1 and 5, the rear edge of the left end plate 41 and the rear edge of the right end plate 42 of the heat exchanger 40 are respectively provided with a fifth positioning through hole 705, specifically, the rear edge of the left end plate 41 and the rear edge of the right end plate 42 may respectively include a rear flange 414, and the rear flange 414 is provided with a fifth positioning through hole 705, so that the axial direction of the fifth positioning through hole 705 generally extends in the front-rear direction. As shown in fig. 1 and 8, the rear portion of the combustor 50 may be provided with a sixth positioning through hole 706, for example, the rear portion of the combustor 50 may be provided with a downward extending flange provided with the sixth positioning through hole 706 such that the axial direction of the sixth positioning through hole 706 extends substantially in the front-rear direction. When the smoke cage 30, the heat exchanger 40 and the burner 50 are respectively connected with the rear side plate 13 of the frame 10 through fasteners, the axial directions of the positioning through holes on the components are substantially the same, so that the fasteners matched with different positioning through holes can be assembled along the same direction, the assembly process is simplified, and the sealing performance of the locking connection is improved.

In some embodiments, as shown in fig. 1 and 6, first positioning via 701, second positioning via 702, and third positioning via 703 are coplanar. The fasteners matched with different positioning through holes are the same in axial direction, and the starting and stopping positions of assembly are substantially the same, so that the assembly process is further simplified, and the tool is more favorable for simultaneous and efficient assembly.

In other embodiments of the present invention, as shown in fig. 17-19 and fig. 22 and 24, the top surface of the smoke cage 30 is provided with a first flange 31 extending upward, the cover plate 20 is provided with a first hook 21, and the first flange 31 is inserted into the first hook 21 for positioning. Specifically, the first hook 21 may be a U-shaped structure with an opening facing downward, so that the first flange 31 can be inserted into the U-shaped structure through the opening.

In some embodiments, as shown in fig. 17-18 and fig. 21-23, the front edge of the frame 10 is provided with a plurality of positioning flanges 11, and correspondingly, the cover plate 20 is provided with a plurality of positioning notches 22, and the positioning flanges 11 are clamped in the positioning notches 22 to achieve positioning. Specifically, the positioning flange 11 may extend outward (i.e., the positioning flange 11 on the left side edge is toward the left, and the positioning flange 11 on the right side edge is toward the right) and then extend rearward, the positioning notch 22 is an L-shaped notch, one side of the L-shaped notch has an opening, and the positioning flange 11 is inserted into the L-shaped notch through the opening and then clamped in the other side of the L-shaped notch.

In some embodiments, as shown in fig. 21 and 22, the lower side of the cover plate 20 is provided with a third connecting through hole 603, correspondingly, the front side of the bottom plate 15 of the frame body 10 is provided with a sixth connecting through hole 606, and the third connecting through hole 603 and the sixth connecting through hole 606 are locked by screws. Therefore, the lower side of the cover plate 20 is firmly locked on the frame body 10, the sealing performance between the cover plate 20 and the frame body 10 is improved, and heat and air flow are prevented from being lost outwards.

As shown in fig. 17-24, when assembling the cover plate 20, the cover plate 20 may be moved backward to make the first flange 31 opposite to the opening of the first hook 21, and the positioning flange 11 is located in one side of the positioning notch 22; then, the cover plate 20 is pulled down, so that the first flanging 31 is inserted into the first hook 21, and meanwhile, the positioning flanging 11 moves into the other side of the positioning notch 22, so that the positioning flanging 11 is clamped with the positioning notch 22, thereby limiting the positioning of the cover plate 20 in the vertical direction and the horizontal direction, and simultaneously aligning the third connecting through hole 603 with the sixth connecting through hole 606; finally, the third connecting through hole 603 and the sixth connecting through hole 606 are locked by a fastener, so that the sealing between the cover plate 20 and the frame body 10 is realized.

In some embodiments of the present invention, the hood 30 and the heat exchanger 40 may be connected to be integrated into a first unit, and the first unit may be integrally assembled on the frame 10 for heat exchange and smoke exhaust, which is beneficial to reduce the assembly processes between components and improve the overall assembly efficiency. A connection structure of the hood 30 and the heat exchanger 40 according to some embodiments of the present invention will be described with reference to the accompanying drawings. The left side plate and the right side plate of the smoke hood are respectively welded with the left end plate and the right end plate of the heat exchanger; or, the lower edge of the left side board of petticoat pipe and the lower edge of right side board all are equipped with first connecting portion, and the left end board and the right end board of heat exchanger all are equipped with first connection cooperation portion, and wherein, first connecting portion and first connection cooperation portion pass through trip and turn-ups joint.

In some embodiments, as shown in fig. 19, the left side plate and the right side plate of the smoke cage 30 can be welded with the left end plate 41 and the right end plate 42 of the heat exchanger 40, respectively, and the connection is reliable and the sealing effect is good. In other embodiments, as shown in fig. 1-5, the lower edges of the left and right side panels of the hood 30 are each provided with a first connection 32, and the left and

right end panels

41, 42 of the heat exchanger 40 are each provided with a first connection fitting 43. Wherein, the first connecting matching part 43 and the first connecting part 32 can be clamped with the flanging by a clamping hook. Specifically, the first connecting portion 32 is a second hook, the first connecting matching portion 43 is a second flange, and the second flange can be inserted into the second hook, so as to connect the hood 30 and the heat exchanger 40, so that the connection operation is simple, and the connection operation of the hood 30 and the heat exchanger 40 can be performed from any direction. Specifically, the second hook may be a U-shaped structure with an inward opening (i.e., the second hook of the left side plate has an opening facing right and the second hook of the right side plate has an opening facing left), and the second flange is an outwardly extending flange. Of course, the arrangement positions of the second flange and the second hook can be interchanged, and the invention is also within the protection scope of the invention. Or, as shown in fig. 4 and 5, the first connecting portion 32 is a third hook, the first connecting fitting portion 43 is a first bayonet, and the third hook can be snapped into the first bayonet to connect the hood 30 and the heat exchanger 40, so that the connection operation is simple, and the connection operation of the hood 30 and the heat exchanger 40 can be performed from any direction. Specifically, the third hook may be an L-shaped plate extending downward and then forward (or backward), and the L-shaped plate moves forward (or backward) relative to the heat exchanger 40 after passing through the first bayonet, so that the edge of the first bayonet is clamped above the transverse edge of the L-shaped plate. Of course, the arrangement positions of the first bayonet and the third hook can be interchanged, and the invention is also within the protection scope of the invention.

In some embodiments, as shown in fig. 4 and 5, the side panels of the smoke cage 30 may be provided with outwardly extending hems that are cut and bent to form a third catch. The upper edge of the end plate of the heat exchanger 40 is provided with an upper flanging 411, and the upper flanging 411 is perforated to form a first bayonet. After the third clamping hook is clamped into the first bayonet, the edge of the first bayonet can be located between the transverse edge of the L-shaped plate body and the folded edge of the smoke hood 30, so that the folded edge of the smoke hood 30 can be in contact fit with the upper folded edge 411 of the heat exchanger 40 to realize the limit in the vertical direction and simultaneously facilitate the reliable sealing between the smoke hood 30 and the heat exchanger 40.

The connection structure of the heat exchanger 40 and the frame 10 according to some embodiments of the present invention will be described below with reference to the accompanying drawings.

In some embodiments of the invention, the frame body comprises a left side plate, a rear side plate, a right side plate and a bottom plate, the left side plate and the right side plate are lower than the rear side plate to form a mounting position of the heat exchanger, the upper edge of the left side plate and the upper edge of the right side plate of the frame body are both provided with second connecting parts, the lower edge of the left end plate and the lower edge of the right end plate of the heat exchanger are both provided with second connecting and matching parts, and the second connecting parts and the second connecting and matching parts are connected in a clamping manner through clamping hooks and flanges or in a matching manner through fasteners so as to assemble the heat exchanger on the frame body.

As shown in fig. 1-2 and 17-18, the frame 10 includes a left side panel 12, a rear side panel 13, a right side panel 14, and a bottom panel 15, the left side panel 12 and the right side panel 14 have a height lower than the rear side panel 13, so that when the cover panel 20 and the hood 30 are mounted to the frame 10, a partial opening is formed between the hood 30 and the left side panel 12, and between the hood 30 and the right side panel 14. The left end plate 41 of the heat exchanger 40 is installed between the left side plate 12 and the smoke cage 30 and between the rear side plate 13 and the cover plate 20, and the right end plate 42 of the heat exchanger 40 is installed between the right side plate 14 and the smoke cage 30 and between the rear side plate 13 and the cover plate 20, so that the heat exchanger 40 is located in the installation cavity defined by the frame body 10, the smoke cage 30 and the cover plate 20, and the left end plate 41 and the right end plate 42 of the heat exchanger 40 can close the local opening of the installation cavity to facilitate the formation of a sealed space, so that the heat exchange part of the heat exchanger 40, the combustor 50 and other components can be located in the sealed space.

In some embodiments, as shown in fig. 5-6 and 19-21, the upper edge of the left end plate 41 and the upper edge of the right end plate 42 of the frame 10 are both provided with the second connecting portion 16, the lower edge of the left end plate 41 and the lower edge of the right end plate 42 of the heat exchanger 40 are both provided with the second connecting matching portion 44, and the second connecting portion 16 is connected to the second connecting matching portion 44 to connect the heat exchanger 40 and the frame 10.

In some embodiments, as shown in fig. 19-21, the second connecting portion 16 and the second connecting mating portion 44 can be snapped together by a snap and a flange. Specifically, the second connecting portion 16 is a third flange, the second connecting and matching portion 44 is a fourth hook, and the third flange is matched with the fourth hook. In the assembling process, the heat exchanger 40 is fastened to the frame 10 by the fastening of the third flange and the fourth hook. Specifically, the fourth hook may be a U-shaped structure with an inward opening, the third flange may be an outward extending flange, and the flange is clamped into the U-shaped structure through the opening to fasten the third flange to the fourth hook. Of course, the arrangement positions of the third flange and the fourth hook can be interchanged, which is within the protection scope of the present invention.

In other embodiments, as shown in fig. 5 to fig. 6, the second connecting portion 16 is a fifth hook, the second connection matching portion 44 is a second bayonet, and the fifth hook is snapped into the second bayonet, so as to connect the frame 10 and the heat exchanger 40, the connection operation is simple, and the connection operation can be performed on the frame 10 and the heat exchanger 40 from any direction. Specifically, the fifth hook may be an L-shaped plate extending upward and then forward (or backward), and the L-shaped plate moves forward (or backward) relative to the heat exchanger 40 after passing through the second bayonet, so that the edge of the second bayonet is clamped below the transverse edge of the L-shaped plate. Of course, the arrangement positions of the second bayonet and the fifth hook can be interchanged, and the invention is also within the protection scope of the invention.

In some embodiments, as shown in fig. 5-6, the side plates of the frame 10 may be provided with outwardly extending folded edges, and the folded edges are cut and bent to form the fifth hooks. The lower edge of the end plate of the heat exchanger 40 is provided with a lower flange 412, and the lower flange 412 is perforated to form a second bayonet. After the fifth clamping hook is clamped into the second clamping opening, the edge of the second clamping opening can be located between the transverse edge of the L-shaped plate and the folded edge of the frame body 10, so that the folded edge of the frame body 10 can be in contact fit with the lower folded edge 412 of the heat exchanger 40, the limiting in the vertical direction is realized, and the reliable sealing between the frame body 10 and the heat exchanger 40 is realized.

In some embodiments of the present invention, as shown in fig. 1, 9 and 17, the gas apparatus 100 further comprises a gas distribution rod 60, at least a portion of the gas distribution rod 60 being fitted in the mounting cavity and located at the bottom so as to be disposed adjacent to the burner 50. The gas distributing rod 60 is used to introduce gas into the combustor 50, and the air and the gas are combusted in the combustor 50 to generate high temperature flue gas.

In some embodiments, the gas distributing rod 60 may be connected to the burner 50 to be integrated into a second assembly, and the second assembly may be integrally assembled to the installation cavity, thereby reducing the assembly processes between the components and improving the overall assembly efficiency. Of course, in the actual assembly process, the burner 50 may be first installed in the installation cavity, and then the gas distributing rod 60 may be installed in the burner 50. Specifically, as shown in fig. 1, 8-9 and 17, the front portion of the burner 50 is provided with a seventh connecting through hole 607, the gas distribution rod 60 is provided with an eighth connecting through hole 608, and the seventh connecting through hole 607 and the eighth connecting through hole 608 are locked by a fastener, so that the burner 50 and the gas distribution rod 60 are reliably connected, and the assembly can be performed from the front side of the frame 10, which is more convenient.

In some embodiments, as shown in fig. 8 and 9, at least one seventh connecting through hole 607 is provided at both lateral ends of the burner 50, and at least one eighth connecting through hole 608 is provided at both lateral ends of the gas distributing rod 60, so that the connection of the two components is achieved through both lateral ends, and the connection is more reliable.

In some embodiments, as shown in fig. 9, a sealing member 61 is sleeved outside the gas distributing rod 60, and after the assembly is completed, the sealing member 61 can be in sealing contact with the cover plate 20 and the frame 10, so as to ensure that the gas does not leak, and improve the use safety. The sealing member 61 may be a rubber member, a sponge member, or the like.

In some embodiments, the burner 50 and the gas distributing rod 60 are assembled in a manner that the gas distributing rod 60 is first locked to the burner 50 by screws, and then the second portion is integrally locked to the frame 10, and the bottom plate 15 of the frame 10 may be provided with a notch 151 for the gas distributing rod 60 to pass through, as shown in fig. 9 and 21, and the front side edge of the bottom plate 15 is provided with the notch 151, so that the gas distributing rod 60 is conveniently connected to an external gas pipe.

In some embodiments of the present invention, as shown in fig. 1, 10-11 and 17, the gas appliance 100 further includes a fan assembly 70, and the fan assembly 70 is mounted on the bottom plate 15 of the frame 10 and located outside the installation cavity. The blower unit 70 blows air from the outside into the casing 10, so that the air and the gas can be combusted in the combustor 50 to generate high-temperature flue gas. That is, the upper portion of the frame 10 is provided with a first unit (including the heat exchanger 40 and the hood 30) for exchanging heat and discharging smoke, and the bottom portion of the frame 10 is provided with a second unit (including the burner 50 and the gas distributing rod 60) for burning air-fuel gas (mixed gas of air and gas) and a blower unit 70 for blowing air. In this embodiment, the assembly process of the gas appliance 100 may be roughly as follows, first assembling the first part on the top of the frame 10, then assembling the second part in the frame 10, then assembling the fan assembly 70 on the bottom of the frame 10, and finally covering the cover plate 20 on the front side of the frame 10. Of course, the above is only illustrative and not limiting for the assembly process of the gas appliance 100, and the gas appliance 100 further includes the assembly of the housing, and the connection of other pipes and lines, which will not be described in detail herein.

In some embodiments, the gas appliance further includes a fan unit, the fan unit is mounted on the bottom plate of the frame and located outside the mounting cavity, the bottom plate of the frame is provided with a fan interface, an air outlet of the fan unit corresponds to the fan interface, the fan unit is provided with a first positioning lug, a bottom surface of the bottom plate extends downwards to be provided with a second positioning lug, and the first positioning lug and the second positioning lug are locked through a fastener.

In some embodiments, as shown in fig. 6 and 21, the bottom plate 15 of the frame 10 is provided with a fan interface 17, and as shown in fig. 10-15 and 25-27, the air outlet 73 of the fan unit 70 corresponds to the fan interface 17, so that the fan unit 70 can blow air into the frame 10 and the installation cavity through the fan interface 17.

In addition, as shown in fig. 6, 10-13 and 21, the fan assembly 70 is provided with a first positioning lug 71, the bottom surface of the bottom plate 15 is provided with a second positioning lug 18 extending downwards, and the first positioning lug 71 and the second positioning lug 18 are locked by a fastener. When the fan unit assembly 70 is assembled, the air outlet 73 of the fan unit assembly 70 may be first abutted with the fan interface 17 on the bottom plate 15, at this time, the first positioning lug 71 and the second positioning lug 18 are also abutted, and then the first positioning lug 71 and the second positioning lug 18 may be locked by a fastener such as a screw from the front side of the frame body 10, so as to implement a front assembling operation.

In some embodiments, as shown with continued reference to fig. 6, 10-13, and 21, the first positioning lug 71 and the second positioning lug 18 may be lugs that extend in the left-right direction and the up-down direction, and through-holes for mounting fasteners on the first positioning lug 71 and the second positioning lug 18 may extend axially in the front-back direction to facilitate the front-side assembly operation.

In some embodiments, as shown in fig. 6, 10-13 and 21, the top of the fan assembly 70 is provided with a positioning strip 72, the bottom plate 15 of the frame 10 is provided with a strip-shaped positioning hole 19, and the positioning strip 72 is inserted into the strip-shaped positioning hole 19. During assembly, the positioning strip 72 can be obliquely inserted into the strip-shaped positioning hole 19, and then the positioning strip 72 is received on the hole wall of the positioning hole, so that the assembly stability of the fan assembly 70 and the frame 10 is further improved.

In some embodiments, as shown in fig. 6 and 21, the bottom plate 15 may be provided with a downward extending flange having a strip-shaped positioning hole 19, and the positioning strip 72 is inserted into the positioning hole and then received on the flange. Alternatively, the bottom plate 15 is provided with the strip-shaped positioning hole 19 into which the positioning strip 72 is inserted and then received on the top surface of the bottom plate 15, which can improve the stability of the assembly.

In the embodiment with both the first positioning lug 71 and the positioning strip 72, the positioning strip 72 may be inserted into the strip-shaped positioning hole 19 to achieve pre-positioning, so that the first positioning lug 71 and the second positioning lug 18 abut against each other, for example, the first positioning lug 71 is attached to the front side (or the rear side) of the second positioning lug 18, and the holes on the two positioning lugs are aligned, so that the fastener locks the first positioning lug 71 and the second positioning lug 18, and the fastener is installed more quickly. The first positioning lug 71 and the positioning bar 72 may be respectively located at two sides (e.g., left and right sides) of the air outlet 73, which are far away from each other, to improve fixing stability of the fan assembly 70.

As shown in fig. 1 to 16, the assembly process of the gas appliance 100 according to the first embodiment of the present invention may be as follows, (1) the burner 50 is first inserted into the frame 10 from the front opening of the frame 10, and is fixed to the frame 10 by screws. (2) The gas distributing rod 60 is inserted into the burner 50 through the front opening of the frame 10, and is fixed to the burner 50 by screws. (3) The hood 30 and the heat exchanger 40 are snap-coupled by the first coupling part 32 and the first coupling fitting part 43. (4) The heat exchanger 40 and the smoke hood 30 are limited by being connected with the frame 10 in a snap-fit manner through the second connecting part 16 and the second connecting matching part 44, and then fixed through screws. (5) The frame body 10, the heat exchanger 40 and the hood 30 are covered with the cover plate 20 and then fixed by screws from the front. (6) And inserting the positioning strip 72 on the right side of the fan part assembly 70 into the strip-shaped positioning hole 19 on the fan interface 17, and fixing the first positioning lug 71 and the second positioning lug 18 from the front side through screws to finish the fixation of the fan part assembly 70.

From this, in all screws concentrated in two planes, used specific frock can beat all screws simultaneously in the time of the utmost point short to all parts can carry out the front assembly, need not frequently to adjust gas equipment 100's direction, promote assembly efficiency greatly, the automated production of being convenient for.

As shown in fig. 17 to 27, the assembly process of the gas appliance 100 according to the second embodiment of the present invention may be (1) first inserting the burner 50 into the frame 10 from the front opening of the frame 10, and fixing the burner to the frame 10 by screws. (2) The gas distributing rod 60 is inserted into the burner 50 through the front opening of the frame 10, and is fixed to the burner 50 by screws. (3) The hood 30 and the heat exchanger 40 are welded and fixed to form a first assembly. (4) The first unit is inserted into the frame 10 from the front opening of the frame 10, and 2 to 4 screws are driven from the front side to fix the first unit. The left and right end plates of the heat exchanger are snap-connected to the left and right side plates of the frame 10 by the second connecting portions 16 and the second connecting engagement portions 44. (5) The first hook 21 on the top of the cover plate 20 firstly wraps the first flanging 31 on the smoke cover 30. Then the cover plate 20 is slid downwards until the positioning notches 22 at the left and right sides of the cover plate 20 are buckled with the positioning notches 22 on the frame body 10. Finally, the cover plate 20 and the bottom of the frame body 10 are fixed through screws, and complete restraint is achieved. (6) And inserting the positioning strip 72 on the right side of the fan part assembly 70 into the strip-shaped positioning hole 19 on the fan interface 17, and fixing the first positioning lug 71 and the second positioning lug 18 from the front side through screws to finish the fixation of the fan part assembly 70. From this, can the quantity of required screw of significantly reducing to all limits can carry out the front assembly, need not frequently to adjust the direction of gas equipment 100, all are favorable to promoting assembly efficiency, the automated production of being convenient for.

In some embodiments of the present invention, as shown in fig. 6-7 and 21-22, the bottom plate 15 of the frame 10 is provided with a fan interface 17, and at least one side plate of the installation cavity is provided with a cooling and heat insulating plate 80 at intervals, so as to form an air cooling channel 90, for example, at least one of the cover plate 20, the left side plate 12, the right side plate 14 and the rear side plate 13 of the frame 10 is provided with a cooling and heat insulating plate 80 at intervals. Air-cooled passageway 90 and fan interface 17 intercommunication to the air that makes to get into the installation cavity by fan interface 17, partly can mix with the gas and be used for the burning, and another part can get into air-cooled passageway 90 in, cools down the curb plate of installation cavity. In the embodiment where the cooling insulation panels 80 are arranged on the side plates of the installation cavity at intervals, a fully enclosed air cooling system can be formed, and more reliable cooling is realized. Through setting up the air cooling system, make heat exchanger 40 can adopt no coil heat exchanger, the water route pipeline who is used for the cooling among the correlation technique has been saved, heat exchanger 40's volume has been reduced greatly, under the condition that does not increase gas equipment 100 volumes, the space of installation intracavity combustion area can be greatly increased, the volume heat density has been reduced, the risk of heat exchange tube or fin fatigue fracture of heat exchanger 40 has been avoided appearing, gas equipment 100's reliability has been improved, the coil pipe corrosion has also been eliminated, frost crack scheduling problem. In addition, the air cooling channel 90 is formed between the cooling heat insulation plate 80 and the side plate of the installation cavity, and the large-area air cooling channel 90 not only reduces the wall surface temperature, but also can effectively isolate combustion noise and improve the sound quality of the whole machine. In the design process, the distribution proportion of air blown by the fan device 70 for combustion and air cooling can be adjusted by adjusting the inlet size of the air cooling channel 90, so as to meet the combustion and air cooling requirements. In some embodiments, 80-90% of the air blown by the fan unit 70 passes through the burner 50 to participate in the combustion reaction, and the remaining 10-20% of the air passes through the air cooling system composed of the cooling heat insulation plate 80, the frame body 10 and the cover plate 20 to cool the wall surface of the combustion chamber.

In some embodiments of the invention, the air cooling channels are communicated with the fan interface, the inlet of at least one air cooling channel is lower than the combustion surface of the combustor, and at least a part of airflow flowing out of the outlet blows to the bottom of the heat exchanger.

As shown in fig. 14-15 and 25-27, the inlet of the air-cooled duct 90 is below the combustion surface of the burner 50, thereby ensuring a lower temperature of the air in the air-cooled duct 90. Preferably, the inlet of at least one air-cooled channel is lower than the bottom surface of the burner 50, that is, the air source in the air-cooled channel 90 is the cold air directly introduced by the fan unit 70, and the temperature of the frame 10 and the cover plate 20 can be reduced during the upward flowing process of the air-cooled channel 90, so as to reduce the heat radiation from the frame 10 and the cover plate 20 to the outside and reduce the damage of the heat to the components of the gas equipment 100.

In some embodiments, as shown in fig. 14-15 and 25-27, at least a portion of the airflow flowing out of the outlet of the air-cooled channel 90 is blown to the end portions (left end and right end) of the heat exchanger 40 to directly and continuously cool the heat exchanger 40, so as to reduce the heat dissipated from the heat exchanger 40 to the outside through the end plates and avoid heat loss of the electronic components of the gas appliance 100. In addition, the inlet and the outlet of the air-cooled channel 90 are arranged at positions such that the air-cooled channel 90 can extend from the lower part of the installation cavity to the upper part of the installation cavity, so as to cool the frame body 10 and the cover plate 20 in a wider range, for example, at least a part of the burner 50 is located in an area surrounded by the air-cooled channel 90, and an area between the burner 50 and the heat exchanger 40 is also located in an area surrounded by the air-cooled channel 90, thereby greatly improving the cooling effect.

In some embodiments, the cooling heat insulation board comprises a first cooling heat insulation board, the left side board and/or the right side board of the frame body are/is provided with the first cooling heat insulation board at intervals so as to define a first air cooling channel, and the bottom of the first air cooling channel is provided with an inlet and the top of the first air cooling channel is provided with an outlet; the cooling heat insulation plate comprises a second cooling heat insulation plate, a rear side plate of the frame body and/or the cover plate are/is provided with the second cooling heat insulation plate at intervals so as to limit a second air cooling channel, and the second cooling heat insulation plate is provided with a plurality of outlets distributed at intervals along the vertical direction.

As shown in fig. 14, 25 to 26, the air-cooled duct 90 includes a first air-cooled duct 91, the cooling insulation panel 80 includes a first cooling insulation panel 81, and at least one of the left side panel 12 and the right side panel 14 of the frame body 10 is provided with the first cooling insulation panel 81 at an interval to define the first air-cooled duct 91, in other words, at least one of the left side panel and the right side panel of the installation cavity has the first air-cooled duct 91. The bottom of the first air-cooled channel 91 has an inlet 911 and the top of the first air-cooled channel 91 has an outlet 912. I.e. cool air entering from the bottom and exiting from the top. On one hand, the left side plate 12 and the right side plate 14 of the frame 10 are far away from the flame of the burner 50, and the relative temperature is low, so that the cold air directly flowing in the first air cooling channel 91 reduces the temperature of the left side plate 12 and the right side plate 14 by the heat convection principle; on the other hand, the air in the first air-cooling channel 91 can flow out from the outlet 912 at the top to directly blow to the two ends of the heat exchanger 40, so that low-temperature airflow layers are formed at the two ends of the heat exchanger 40, the two ends of the heat exchanger 40 are continuously cooled, the heat dissipated to the outside by the left end plate 41 and the right end plate 42 of the heat exchanger 40 is reduced, and the heat loss of the electronic components of the gas appliance 100 is avoided.

In some embodiments of the present invention, the first cooling insulation panel 81 extends to the bottom of the burner 50 toward the lower portion of the left side panel 12 and/or the right side panel 14 of the frame 10 such that the inlet of the first air-cooling duct 91 is lower than the bottom surface of the burner 50, or the inlet of the first air-cooling duct 91 is flush with the bottom surface of the burner 50. Thus, the air temperature in the first air-cooling passage 91 can be ensured to be low, and preferably, the air source in the first air-cooling passage 91 is the cold air directly introduced by the fan unit 70. In the process that the cold air flows upwards in the first air cooling channel 91, the temperature of the frame 10 can be reduced, so that the heat radiation of the frame 10 to the outside is reduced, and the damage of the heat to the parts of the gas equipment 100 is reduced.

In some embodiments, the second cooling insulation panel has a plurality of cut-off sections, each cut-off section has a transverse extension section and a longitudinal extension section, the transverse extension section extends from inside to outside, the starting end of the longitudinal extension section is connected with the outer end of the transverse extension section, the longitudinal extension section extends obliquely upwards, and each cut-off section has an outlet of the second air-cooled channel. Preferably, the outlet of the second air-cooled channel is formed as a strip-shaped air outlet arranged on the interception section. The height of the first layer of interception section at the lowest side of the second cooling heat insulation plate close to the back side of the frame body is lower than that of the first layer of interception section at the lowest side of the second cooling heat insulation plate at the front side, so that the height of the first layer of air outlet close to the air cooling channel of the back frame body is relatively lower. Furthermore, the air outlet of the second layer interception section of the front side second cooling heat insulation board is also higher than the air outlet of the second layer interception section of the rear side second cooling heat insulation board, the air outlet of the third layer interception section of the front side second cooling heat insulation board is higher than the air outlet of the third layer interception section of the rear side second cooling heat insulation board, the interval between each layer interception sections of the rear side second cooling heat insulation board is larger than the interval between each layer interception section of the front side second cooling heat insulation board, or the interval between the multi-layer interception sections of the rear side second cooling heat insulation board is larger than the interval between the front side second cooling heat insulation boards, so that the air outlets of the front and rear second cooling boards are staggered mutually, the direct collision of air flow in the cavity is avoided, noise is generated, and the cooling of the combustion chamber cavity is better realized.

As shown in fig. 6 to 7, 14 to 16, 21 to 22, and 25 to 27, the air-cooled duct 90 includes a second air-cooled duct 92, the cooling insulation panel 80 includes a second cooling insulation panel 82, and at least one of the rear side panel 13 of the frame body 10 and the cover panel 20 is spaced apart by the second cooling insulation panel 82 to define the second air-cooled duct 92. In other words, at least one of the rear side plate 13 and the cover plate 20 of the installation cavity is provided with the second air-cooling duct 92 to cool down from at least one of the front and rear sides of the combustion chamber. The bottom of second air-cooling passageway 92 has import 921, and second cooling heat insulating board 82 can be equipped with a plurality of exports 922 along vertical interval distribution to make the air in the second air-cooling passageway 92 can flow to the inboard of second cooling heat insulating board 82 from the export 922 of different heights, at least partial cold wind can form the air film protective layer in the inboard of second cooling heat insulating board 82, keep apart high temperature flue gas through the air film protective layer, prevent that the temperature from transmitting to the outside, play the effect that reduces wall temperature.

In some embodiments, three layers of intercepting sections are arranged on the second cooling heat insulation board, wherein five strip-shaped air outlets are arranged on the intercepting section at the lowest layer, four strip-shaped air outlets are arranged on the intercepting section at the middle layer, and five strip-shaped air outlets are arranged on the intercepting section at the uppermost layer; the quantity that can intercept section air outlet with the intermediate level is less than the quantity that section air outlet was intercepted to upper and lower tip to reduce the resistance that section air outlet was intercepted to the intermediate level, better realization is to the effect of combustion chamber cavity cooling.

For example, as shown in fig. 6-7, 14-16, 21-22, and 25-27, the second cooling heat insulating plate 82 extends toward the bottom of the rear side plate 13 of the frame 11, and a gap between the second cooling heat insulating plate 82 and the rear side plate 13 of the frame 11 forms a back air inlet of the second cooling passage 92, which is disposed near the bottom side plate of the combustor 50. So that the second cooling channel 92 can guide the air with lower temperature in the lower part of the combustion chamber as much as possible upwards, thereby realizing better cooling effect on the rear side plate 13 of the frame body 11 and better preventing the electronic elements of the gas equipment 100 from being damaged.

For example, as shown in fig. 6 to 7, 14 to 16, 21 to 22, and 25 to 27, the second cooling and heat insulating plate 82 extends toward the lower portion of the cover plate 20, and the gap between the second cooling and heat insulating plate 11 and the cover plate 20 forms a front side air inlet of the second air cooling passage 92, and the front side air inlet of the second air cooling passage 92 is higher than the height of the back side air inlet. So that the downward extending end of the second cooling insulation board 82 engaged with the cover plate 20 is smaller than the downward extending end of the second cooling insulation board 82 engaged with the rear side plate 13 of the frame 11, and on the premise of ensuring that the temperature of the intake air is low, the interference of the installation of other structures such as the air distributing rod 32 and the like caused by the second cooling insulation board 82 positioned at the front side is avoided.

In some embodiments, as shown in fig. 6-7, 14-16, 21-22, and 25-27, the second cooling and heat insulating plate 82 has a plurality of cut-off sections 821, each cut-off section 821 has a transverse extension 822 and a longitudinal extension 823, the transverse extension 822 extends from inside to outside, the starting end of the longitudinal extension 823 is connected with the outer end (i.e., the tail end) of the transverse extension 822, the longitudinal extension 823 extends obliquely upward, and each cut-off section 821 has an outlet 922 of the second air-cooling channel 92. That is, the second air-cooling passage 92 is divided by the plurality of intercepting sections 821, and is divided and flowed out at the outlet 922 of each intercepting section 821, and is dispersed in the inner wall surface area of the second cooling and heat insulating board 82, so that a gas film protective layer with better distribution effect is always formed on the inner wall surface of the second cooling and heat insulating board 82, the heat is blocked from radiating to the outside, and the influence of the heat on the parts of the gas equipment 100 is reduced.

In some embodiments of the present invention, as shown in fig. 15-16 and 27, each of the laterally extending segments 822 has an outlet 922 of the second air-cooling duct 92 and the opening direction is upward, so that the air flowing out from the outlet 922 of the second air-cooling duct 92 has a tendency to flow upward, thereby facilitating the formation of an air film protection layer on the inner wall surface of the second cooling insulation board 82 at all times and reducing the heat radiation to the outside. It should be noted that the laterally extending portion 822 may extend along a horizontal direction or may extend obliquely to the horizontal direction, and the opening direction of the outlet 922 of the second air-cooling passage 92 may be vertically upward or obliquely upward, which is within the protection scope of the present invention.

In addition, referring to fig. 16, the longitudinal extension 823 extends obliquely upward and inward, so that the air flowing out from the outlet 922 on the transverse extension 822 can directly blow to the oblique longitudinal extension 823, and thus more air forms an air film protection layer under the flow guiding effect of the longitudinal extension 823, so as to improve the heat insulation effect.

In some embodiments of the present invention, as shown in fig. 14-15 and 27, a portion of the plurality of second cool air channels wraps around the outer periphery of the heat exchanger 40 to isolate the heat exchanger 40 from the outside to a certain extent, so as to reduce the heat radiated to the outside from the area where the heat exchanger 40 is located, and avoid heat loss to the electronic components of the gas appliance 100.

In some embodiments, as shown in fig. 27, the flow path of the air flow in the second cold air channel is higher than the bottom surface of the heat exchanger 40.

In some embodiments of the present invention, as shown in fig. 14 to 16, the connection of the transverse extension 822 and the longitudinal extension 823 of the uppermost cut-off section 821 among the plurality of cut-off sections 821 is in contact fit with the rear side plate 13 (or the cover plate 20) of the corresponding frame body 10 to form an air insulation layer on the upper side (the portion corresponding to the heat exchanger side wall) of the second cooling heat insulation plate; the junctions of the laterally extending sections 822 and the longitudinally extending sections 823 of the other cutout sections 821 are spaced apart from the corresponding rear side plate 13 (or cover plate 20) of the frame body 10 to form cooling channels in the gaps between the second cooling insulation panels and the back plate or cover plate of the frame body.

Taking the three intercepting sections 821 located on the inner side of the rear side plate 13 of the frame 10 as an example, the cold air enters from the inlet 921 of the second air-cooling channel 92 and then flows upwards through the second air-cooling channel 92; after reaching the outlet 922 of the lowermost intercepting section 821, part of the cold air blows to the longitudinal extension section 823 of the intercepting section 821 to form an air film protective layer, and the air film protective layer is used for isolating high-temperature flue gas and preventing the temperature from radiating to the outside; the residual cold air continues to flow upwards, and after reaching the outlet 922 of the intermediate intercepting segment 821, part of the cold air blows to the longitudinal extension segment 823 of the intercepting segment 821 to form an air film protective layer; the remaining cold air continues to flow upward, and after reaching the outlet 922 of the uppermost intercepting section 821, the intercepting section 821 is tightly attached to the rear side plate 13 of the frame 10 to perform the intercepting function, the cold air enters the combustion chamber from the outlet 922 of the uppermost layer, and all the cold air flows out and blows to the longitudinal extension section 823 of the intercepting section 821 to form the air film protection layer.

The flow paths and cooling of the other number of intercepting sections 821 and the second air-cooled channel 92 disposed inside the cover plate 20 are similar to those of the above-mentioned embodiments, and will not be described again. By the throttling action of the uppermost intercepting section 821, the cold air in the second air-cooling passage 92 can be blown out completely, and the influence on the heat insulation effect caused by accumulation on the upper part of the second air-cooling passage 92 is avoided.

In some embodiments, as shown in fig. 15-16, the outlet 922 of the uppermost cutout segment 821 may be lower than the heat exchanger 40, with the upper end of the longitudinally extending segment 823 of the cutout segment 821 no lower than the lower end of the heat exchanger 40. Therefore, after the air film protection layer is formed on the longitudinally extending section 823, the cold air blown out from the outlet 922 of the intercepting section 821 can flow upwards to the end part of the heat exchanger 40 under the guiding action of the longitudinally extending section 823, so as to cool the end part of the heat exchanger 40, avoid heat from radiating outwards from the left end plate 41 and the right end plate 42 of the heat exchanger 40, and further improve the heat insulation effect.

In some embodiments of the present invention, as shown in fig. 15 and 27, the second cooling insulation panel 82 extends toward the top of the rear side panel 13 and/or the cover panel 20 of the frame 11 to the top of the heat exchanger 40 to form an insulation portion 93 on the front and rear sides of the heat exchanger 40. In the embodiment including the plurality of cutout sections 821, as shown in fig. 15 and 27, an insulating portion 93 may be further configured between the second cooling insulation plate 82 and at least one of the cover plate 20 and the rear side plate 13 of the frame body 11, the insulating portion 93 being located at an upper side of the second air-cooling passage 52, and the insulating portion 93 being connected to the longitudinally extending section 823 of the uppermost cutout section 821 to simplify the structure and fully utilize the space. And the heat insulating part 93 is located at the outer periphery of the heat exchanger 40. The heat exchanger 40 can be isolated from the outside by the heat insulating portion 93, so that heat radiation from the region where the heat exchanger 40 is located to the outside is reduced, and heat loss on electronic components of the gas appliance 100 is avoided.

In some embodiments, as shown in fig. 15 and 27, the insulation 93 is an air insulation layer, which may be defined by the upper portion of the second cooling insulation panel 82 in cooperation with the corresponding cover panel 20 (or rear side panel 13), simplifying the apparatus structure. Specifically, the lower end of the air insulation layer may be a contact fit between the connection of the transverse extending section 822 and the longitudinal extending section 823 of the uppermost cutout section 821 and the corresponding cover plate 20 (or the rear side plate 13) of the frame 11.

In addition, the air insulation layer is not communicated with the second air-cooling passage 52, so that the air flow in the second air-cooling passage 52 is prevented from entering the air insulation layer to influence the formation of the air film layer on the inner side of the second cooling insulation board 82.

In some embodiments of the present invention, as shown in fig. 6 and fig. 21, the left side plate 12 of the frame 10 is provided with a left supporting flange (e.g., a flange for providing the second connecting portion 16 in fig. 6, or a second connecting portion 16 in fig. 21), the left supporting flange is used for supporting the left end plate 41 of the heat exchanger 40, and the outlet 912 of the first air-cooled channel 91 corresponding to the left side plate 12 of the frame 10 may be level with the left supporting flange, so that the airflow flowing out of the first air-cooled channel 91 may be blown more directly to the left end plate 41 of the heat exchanger 40, and the cooling effect on the left end plate 41 is better.

In some embodiments of the present invention, as shown in fig. 6 and fig. 21, the right side plate 14 of the frame 10 is provided with a right supporting flange, the right supporting flange is used for supporting the right end plate 42 of the heat exchanger 40, and the outlet 912 of the first air-cooling channel 91 corresponding to the right side plate 14 of the frame 10 may be level with the right supporting flange in height, so that the airflow flowing out of the first air-cooling channel 91 may be blown more directly to the right end plate 42 of the heat exchanger 40, and the cooling effect on the right end plate 42 is better.

In some embodiments of the present invention, as shown in fig. 14, the installation cavity includes a first cavity between the bottom side plate 51 of the burner 50 and the bottom plate 15 of the frame 10, and a second cavity between the burner 50 and the heat exchanger 40, such that the first and second cavities are each located between two first cooling insulation plates 81 engaged with the left and

right side plates

12 and 14 of the frame 10. And the air outlet of the fan unit 70 is communicated with the middle part of the first chamber, and the air outlet of the fan unit 70, the first chamber, the burner 50, the second chamber and the heat exchanger 40 are sequentially arranged from bottom to top.

The corresponding first air-cooling channel 91 extends from bottom to top, so that the inlet 911 of the first air-cooling channel 91 is communicated with the direct first chamber, and the outlet 912 of the first air-cooling channel 91 is communicated with the top of the second chamber. Part of the airflow entering the first chamber may flow upwards through the first air-cooled channel 91 and to the top of the second chamber. On the one hand, the gas in the first cavity is the cold air that directly flows in by the air outlet of fan portion dress 70, first air-cooled passageway 91 is direct and first cavity intercommunication, make the air source in the first air-cooled passageway 91 be the cold air that fan portion dress 70 directly introduced, the in-process that the cold air upwards flows in first air-cooled passageway 91 can cool down the temperature of framework 10, thereby reduce framework 10 and to outer heat radiation, reduce the harm of heat to the spare part of gas equipment 100. On the other hand, the export 912 of first air-cooled passageway 91 directly extends to the top of second cavity, it is wider to make first air-cooled passageway vertically to cover the scope at framework 10, it is better to reduce the effect of thermal radiation, and, the export 912 of first air-cooled passageway 91 and the interval of the tip of heat exchanger 40 are littleer, the air current that blows off by the export 912 of first air-cooled passageway 91 can blow to the bottom of the left end plate 41 and the right end plate 42 of heat exchanger 40 more fully, in order to improve the effect of avoiding the heat of high temperature flue gas to approach left end plate 41 and the regional of right end plate 42, it is better to reduce the thermal fatigue effect of the heat exchange tube of heat exchanger 40, avoid the welding seam production crackle that produces between heat exchange tube and left end plate 41 and the right end plate 42, it is better to prevent that the heat exchange tube from appearing the infiltration phenomenon.

In some embodiments of the present invention, as shown in fig. 14 and 15, the installation cavity includes a first chamber between the bottom side plate 51 of the burner 50 and the bottom plate 15 of the frame body 10, and a second chamber between the burner 50 and the heat exchanger 40, such that the first chamber and the second chamber are both located between two second cooling and heat insulating plates 82 engaged with the cover plate 20 and the rear side plate 13 of the frame body 10. And the air outlet of the fan unit 70 is communicated with the middle part of the first chamber, and the air outlet of the fan unit 70, the first chamber, the burner 50, the second chamber and the heat exchanger 40 are sequentially arranged from bottom to top.

The corresponding second air-cooling channel 92 extends from bottom to top, the front air inlet of the second air-cooling channel 92 corresponding to the cover plate 20 is located in the middle of the combustor 50, and the back air inlet of the second air-cooling channel 92 corresponding to the rear side plate 13 of the frame 10 is flush with the bottom side plate 51 of the combustor 50, so that the inlets 921 of the two second air-cooling channels 92 are both communicated with the first chamber. The outlet 922 of the second air-cooling duct 92 is located at the middle part of the second cooling insulation board 82 instead of the top part, so that the outgoing air flow can continue to flow upwards to facilitate the formation of an air film layer on the inner side of the second cooling insulation board 82. And in some embodiments the outlet 922 of the second air-cooled duct 92 communicates with different regions of the second chamber at a plurality of locations in the longitudinal direction. Part of the airflow entering the first chamber may flow upwardly through the second air-cooled duct 92 and to a plurality of locations in the second chamber in the longitudinal direction. On one hand, the air in the first chamber is cold air directly flowing in from the air outlet of the fan unit 70, the second air-cooling channel 92 is communicated with the first chamber, so that the air in the second air-cooling channel 92 is the cold air directly introduced by the fan unit 70, and the temperature of the frame 10 can be reduced in the process that the cold air flows upwards in the second air-cooling channel 92, thereby reducing the heat radiation of the frame 10 to the outside and reducing the damage of the heat to the parts of the gas equipment 100; on the other hand, the cover plate 20 and the rear plate 13 of the housing 10 are closer to the fire row of the burner 50 than the left side plate 12 and the right side plate 14 of the housing 10, and therefore the temperatures of the cover plate 20 and the rear plate 13 of the housing 10 are relatively high. The outlets of the second air cooling channels 92 are arranged at different heights of the second cooling heat insulation boards 82 corresponding to the rear side plates 13 of the cover plate 20 and the frame body 10, so that cold air can be blown out from different heights to ensure that the whole inner surfaces of the second cooling heat insulation boards 82 form an air film layer, heat is more comprehensively and effectively blocked from radiating outwards through the second cooling heat insulation boards 82 and the frame body 10, and the influence of the heat on parts of the gas equipment 100 is reduced. In some embodiments of the present invention, the burner has a bottom side plate, the left and right sides of the bottom side plate of the burner form downward extending flanges to be in fit contact with first cooling heat insulation plates arranged at the left and right sides of the frame at intervals, the first cooling heat insulation plates extend towards the bottom of the frame, so that the air inlet of the first air cooling channel is arranged at the lower part of the bottom side plate of the burner, the corresponding first air cooling channel 91 extends from bottom to top, and the inlet 911 of the first air cooling channel 91 is communicated with the direct first chamber.

As shown in fig. 15 and 27, the burner 50 has a bottom side plate 51, a burner flange 52 extending downward is provided at the rear end of the bottom side plate 51, the burner flange 52 is attached to the rear side plate of the frame 10 to fix the burner 50, for example, the burner flange 52 and the rear side plate 13 of the frame 10 can be locked by a fastener, which is beneficial to the front or back assembly of the burner 50 and improves the assembly efficiency. The lower end of the second cooling heat insulation plate 82 is in clearance fit with the bottom side plate 51, for example, the lower end of the second cooling heat insulation plate 82 is in sealing fit with the bottom side plate 51 or is spaced apart by a small clearance, and the bottom side plate 51 is provided with a through hole which is in communication with the inlet 921 of the second air-cooling passage 92.

Therefore, the second air-cooled channel 92 is defined between the second cooling heat insulation plate 82 and the rear side plate 13 of the frame body 10, and the through hole on the bottom side plate 51 is communicated with the second air-cooled channel 92, so that the interference between the air inlet structure of the second air-cooled channel 92 and the fixing structure of the combustor 50 is avoided, and the structural design is more reasonable.

In some embodiments of the present invention, as shown in fig. 6 and 21, the left side plate 12, the right side plate 14 and the rear side plate 13 of the frame body 10 may be integrally formed as a frame body, the bottom plate 15 of the frame body 10 is connected to the bottom of the frame body, such as riveted, welded or fastened, and the frame body and the bottom plate 15 of the frame body 10 are both connected to the cover plate 20 to form a complete shell structure, which is simple in structure, and does not need to be screwed from multiple directions, thereby reducing the number of assembly processes. And the integrated frame body is beneficial to improving the sealing performance of the first air-cooling channel 91 and the second air-cooling channel 92. For example, in the embodiment including the first air-cooling duct 91 and the second air-cooling duct 92, the frame body is integrally formed such that no gap is formed between the left side plate 12, the right side plate 14, and the rear side plate 13 of the frame body 10, and the frame body is easily sealed with the first cooling heat insulation plate 81 and the second cooling heat insulation plate 82.

In some embodiments, as shown in fig. 6 and 27, the left and

right side plates

12 and 14 of the frame body 10 are respectively provided with the first cooling insulation boards 81 at intervals, thereby forming the first air cooling channel 91; the rear plate 13 of the frame body 10 is provided with the second cooling insulation plate 82 at intervals, thereby constituting a second air-cooling passage 92. And the first cooling heat insulation board 81 and the second cooling heat insulation board 82 are integrally formed to form a U-shaped structure with the shape substantially the same as that of the frame body, and the two integrated pieces are mutually matched to limit two first air cooling channels 91 and one second air cooling channel 92, so that the sealing performance of the air cooling channels is greatly improved. In addition, in the assembling process, the left side plate 12, the right side plate 14 and the rear side plate 13 of the frame body 10 do not need to be assembled, the first cooling heat insulation plate 81 and the second cooling heat insulation plate 82 do not need to be assembled, and when the integrated cooling heat insulation plates are connected with the frame body, the operation is performed from the front side of the frame body, so that the assembling process is greatly simplified.

In some embodiments, as shown in fig. 6, the front edge of the left side plate 12 of the frame 10 is provided with a frame flange 101 extending leftward or rightward, the front edge of the right side plate 14 of the frame 10 is also provided with a frame flange 101 extending leftward or rightward, and the bottom plate 15 of the frame 10 is provided with a bottom plate flange 102 extending upward or downward. So that both the frame flange 101 and the floor flange 102 are substantially located in the longitudinal plane in the left-right direction. The cover plate 20 may be connected to the frame flange 101 and the bottom plate flange 102 by fasteners. Wherein, the fastener can be a screw, a bolt, etc. Therefore, the left side plate 12, the right side plate 14 and the bottom plate 15 of the frame body 10 can be respectively assembled with the cover plate 20 from the front side of the frame body 10, namely, the front assembly is realized, the screws are not required to be screwed from multiple directions, and the assembly process is simplified. For example, all the fasteners of the cover plate 20 can be simultaneously driven by a specific tool in a short time, so that automatic production is realized, the assembly time is greatly reduced, and the production efficiency is improved.

In some embodiments of the invention, as shown in fig. 6, the top edge of the rear side panel 13 of the frame 10 is a flat panel extending in the longitudinal direction, and the smoke cage 30 is connected to the flat panel, for example, by fasteners. In other words, the portion of the rear side plate 13 of the frame 10 for connecting with the hood 30 is not in a flanging structure which is bent along the transverse direction, and is connected with the hood 30 through a flat plate, so that the front side or the back side of the frame 10 can be installed during assembly, and the assembly process is simplified.

The gas water heater according to the embodiment of the present invention includes the gas appliance 100 according to the embodiment of the present invention. Because the gas equipment 100 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, according to the gas water heater according to the embodiment of the present invention, the frame body 10, the hood 30 and the cover plate 20 define the installation cavity, and the heat exchange components of the burner 50 and the heat exchanger 40 are installed in the installation cavity, so that the multiple components are integrally arranged, the assembly structure and the sealing structure are simplified, the production efficiency is improved, the automatic production is realized, the heat loss and the exhaust gas leakage of the gas equipment 100 in the working process are reduced, the energy consumption is reduced, and the safety is improved. In addition, the structure of each component of the gas equipment 100 is suitable for front installation and modularization, and the assembly efficiency is improved.

In some embodiments, the gas water heater comprises a gas heating stove or a gas wall-hanging stove.

Other constructions and operations of the gas appliance 100 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein. While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A gas-fired appliance, comprising:

the exhaust hood comprises a frame body, a cover plate, a smoke hood and a heat exchanger, wherein the cover plate is arranged on the frame body through a front side cover, the heat exchanger is arranged on the frame body, the smoke hood is arranged at the top of the frame body, and the frame body, the cover plate, an end plate of the heat exchanger and the smoke hood are matched to define an installation cavity;

a burner fitted within the mounting cavity.

2. The gas fired appliance of claim 1, wherein the frame includes a left side panel, a rear side panel, a right side panel and a bottom panel, the hood front portion is formed with a roof mounting surface that mates with the hood upper end portion that mates with the roof mounting surface.

3. The gas appliance according to claim 1, wherein left and right side plates of the frame body are bent to form first side mounting surfaces for fitting with the cover plate, the heat exchanger is mounted on upper ends of the left and right side plates of the frame body, second side mounting surfaces for fitting with the cover plate are formed on left and right end plates of the heat exchanger, and left and right edges of the cover plate are fittingly connected with the first side mounting surfaces and the second side mounting surfaces.

4. The gas equipment of claim 1, wherein the bottom plate of the frame body is provided with a bottom plate flange extending upwards or downwards, the bottom plate flange forms a bottom mounting surface, and the bottom of the cover plate is matched and connected with the bottom mounting surface.

5. The gas fired appliance of claims 1-4, wherein connecting through holes are provided between the top, first, second and bottom mounting surfaces and the cover plate for connection by fasteners;

and/or clamping hooks or clamping grooves are arranged between the top mounting surface, the first side mounting surface, the second side mounting surface and the bottom mounting surface and the cover plate so as to be connected through a hook groove structure.

6. The gas fired equipment of claim 1, wherein the hood rear is formed with a rear mounting surface that mates with a rear panel top of the frame, the rear mounting surface and the rear panel having connecting through holes therebetween for connection by fasteners.

7. The gas appliance according to claim 1, wherein the burner has a bottom side plate, a downward extending downward flange is provided at the rear end of the bottom side plate, and the downward flange is attached to the rear side plate of the frame to form a burner mounting surface which is matched with the rear side plate of the frame.

8. The gas fired appliance of claim 5, wherein said cover plate is provided with one or more reinforcing structures disposed proximate to said connecting through hole.

9. The gas fired appliance of claim 1, wherein left and right side panels of the hood are welded to left and right end panels of the heat exchanger, respectively; or, the lower edge of the left side board of petticoat pipe and the lower edge of right side board all are equipped with first connecting portion, the left end board and the right-hand member board of heat exchanger all are equipped with first connection cooperation portion, wherein, first connecting portion with first connection cooperation portion passes through trip and turn-ups joint.

10. The gas equipment according to claim 1, wherein the frame body comprises a left side plate, a rear side plate, a right side plate and a bottom plate, the left side plate and the right side plate are lower than the rear side plate, second connecting portions are arranged on the upper edge of the left side plate and the upper edge of the right side plate of the frame body, second connecting matching portions are arranged on the lower edge of the left end plate and the lower edge of the right end plate of the heat exchanger, and the second connecting matching portions are connected through clamping hooks and flanging in a clamping mode or through fasteners in a matching mode.

11. The gas fired appliance of claim 1, further comprising:

the fan part is assembled on the bottom plate of the frame body and positioned outside the installation cavity, a fan interface is arranged on the bottom plate of the frame body, an air outlet of the fan part corresponds to the fan interface,

the fan part is provided with a first positioning lug, the bottom surface of the bottom plate extends downwards to be provided with a second positioning lug, and the first positioning lug and the second positioning lug are locked through a fastening piece.

12. The gas-fired equipment according to claim 1, wherein the bottom plate of the frame body is provided with a fan interface, at least one side plate of the installation cavity is provided with a cooling and heat-insulating plate at intervals, so that an air-cooled channel is formed, the air-cooled channel is communicated with the fan interface, the inlet of the at least one air-cooled channel is lower than the combustion surface of the burner, and at least a part of the air flow flowing out from the outlet blows towards the bottom of the heat exchanger.

13. Gas-fired appliance according to claim 12,

the cooling heat insulation plate comprises a first cooling heat insulation plate, the first cooling heat insulation plate is arranged between the left side plate and/or the right side plate of the frame body at intervals so as to limit a first air cooling channel, the bottom of the first air cooling channel is provided with an inlet, and the top of the first air cooling channel is provided with an outlet; the cooling heat insulation plates comprise second cooling heat insulation plates, the rear side plate of the frame body and/or the cover plate are/is provided with the second cooling heat insulation plates at intervals so as to limit a second air cooling channel, and the second cooling heat insulation plates are provided with a plurality of outlets which are distributed at intervals along the vertical direction.

14. The gas fired facility according to claim 13, wherein said second cooling heat insulating panel has a plurality of cutouts having a lateral extension extending from inside to outside and a longitudinal extension having a starting end connected to an outer end of said lateral extension, said longitudinal extension extending obliquely upward while being folded, each of said cutouts having an outlet of said second air-cooled channel.

15. The gas fired facility of claim 14, wherein the junction of the transversely extending section and the longitudinally extending section of the uppermost cutout section of the second heat shield is in contact engagement with the rear side panel of the frame and/or the cover panel, and the junction of the transversely extending section and the longitudinally extending section of the other cutout section is spaced from the rear side panel of the frame and/or the cover panel; and/or the presence of a gas in the gas,

a portion of the plurality of second cold air passages is wrapped around an outer periphery of the heat exchanger.

16. The gas fired facility of claim 13, wherein the second cooling insulation panel extends to the side of the heat exchanger to the top of the cover plate and/or the rear side plate of the frame to form an insulation on the front and rear sides of the heat exchanger.

17. Gas-fired appliance according to claim 14,

the left side plate and/or the right side plate of the frame body are/is provided with supporting flanges for supporting the left end plate and/or the right end plate of the heat exchanger, and the outlet of the first air cooling channel is close to the supporting flanges and is parallel to the supporting flanges in height.

18. The gas-fired equipment according to claim 13, wherein the installation cavity comprises a first cavity between a bottom side plate of the burner and a bottom plate of the frame body and a second cavity between the burner and the heat exchanger, the gas-fired equipment comprises a fan assembly, an air outlet of the fan assembly is communicated with the first cavity, part of air flow entering the first cavity flows upwards to the top of the second cavity through the first air-cooled channel, and part of air flow entering the first cavity flows upwards to multiple positions of the second cavity along the longitudinal direction through the second air-cooled channel.

19. The gas appliance according to claim 14, wherein the left and right sides of the bottom side plate of the burner are formed with downwardly extending flanges to be in fitting contact with first cooling heat insulation plates which are spaced apart from the left and right sides of the frame, and the air inlet of the first air cooling passage is provided at a lower portion of the bottom side plate of the burner.

20. The gas appliance according to claim 13, wherein the lower end of the second cooling heat insulation plate is in clearance fit with the rear portion of the burner bottom side plate, and the bottom side plate is provided with a through hole communicating with the inlet of the second air-cooling passage.

21. The gas appliance according to claim 1, wherein the left side plate, the right side plate and the rear side plate of the frame body are integrally formed as a frame body, the bottom plate of the frame body is connected to the bottom of the frame body, and the cover plate is connected to the frame body and the bottom plate of the frame body.

22. The gas appliance according to claim 1, wherein the left side plate and the right side plate of the frame body are respectively provided with a first cooling and heat insulation plate at intervals so as to form a first air cooling channel, the rear side plate of the frame body is provided with a second cooling and heat insulation plate at intervals so as to form a second air cooling channel, and the first cooling and heat insulation plate and the second cooling and heat insulation plate are integrally formed.

23. A gas water heater comprising a gas appliance as claimed in any one of claims 1 to 22.