CN212299454U

CN212299454U - Gas water heater

Info

Publication number: CN212299454U
Application number: CN202020396111.XU
Authority: CN
Inventors: 李键; 邱朝志; 汤以兴
Original assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Haier Smart Home Co Ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2021-01-05
Anticipated expiration: 2030-03-25

Abstract

The utility model discloses a gas water heater. Gas heater, includes: a housing; a burner for burning a combustible gas; a heat exchanger for supplying water to flow and heating water using heat generated from the burner; the air duct assembly comprises a smoke collecting hood, an air duct, a fan and a catalytic module, wherein one port of the air duct is an air inlet, the other port of the air duct is an air outlet, the smoke collecting hood is arranged on the air outlet, the fan is arranged on the air inlet, and the catalytic module is arranged in the smoke collecting hood and covers the air outlet; wherein the air duct assembly is located in the housing and the burner and the heat exchanger are located in the air duct. By integrating the catalytic module in the fume collecting hood, the whole structure of the gas water heater is compact, and the assembly and manufacturing cost is reduced.

Description

Gas water heater

Technical Field

The utility model belongs to the technical field of domestic appliance, especially, relate to a gas heater.

Background

At present, a gas water heater is a common household appliance in daily life. The shell of the gas water heater is usually provided with a combustor, a heat exchanger, a water pump, a smoke collecting cover, a fan and other related components, wherein the combustor, the heat exchanger and the smoke collecting cover are sequentially arranged from bottom to top along the height direction, and the smoke collecting cover is used for collecting smoke generated by combustion of the combustor and outputting the smoke to the outside through an exhaust pipe.

In the use process of the gas water heater, harmful gases such as CO and the like can be generated due to insufficient combustion of the gas. Chinese patent application No. 201710210078X discloses a gas water heater, and a catalytic combustion device is arranged in a fume collecting hood, and the catalytic combustion device mainly comprises a catalyst for catalyzing CO oxidation. In the actual use process, the flue gas generated by the combustion of the combustor under the action of the fan is conveyed to the catalyst through the pipeline, and the flue gas is guided and output from the smoke collecting hood after being treated by the catalyst.

However, since the catalyst is mounted in the smoke collecting hood through a separate housing, it is necessary to assemble the catalyst into a separate sheet metal housing first and then mount the catalyst into the smoke collecting hood at the time of actual assembly. On the one hand, the additional increase of the shell increases the manufacturing cost, and on the other hand, the assembling process of the water heater is complicated, so that the assembling cost is increased. In view of this, how to design a gas heater technology that compact structure and assembly cost are low is the utility model discloses the technical problem that will solve.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gas water heater through with catalytic module integration in collection petticoat pipe to make gas water heater's overall structure compact and reduce equipment manufacturing cost.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

in one aspect, the present invention provides a gas water heater, comprising:

a housing;

a burner for burning a combustible gas;

a heat exchanger for supplying water to flow and heating water using heat generated from the burner;

the air duct assembly comprises a smoke collecting hood, an air duct, a fan and a catalytic module, wherein one port of the air duct is an air inlet, the other port of the air duct is an air outlet, the smoke collecting hood is arranged on the air outlet, the fan is arranged on the air inlet, and the catalytic module is arranged in the smoke collecting hood and covers the air outlet;

wherein the air duct assembly is located in the housing and the burner and the heat exchanger are located in the air duct.

Further, the smoke collecting hood includes:

the device comprises a cover body, wherein extension plates extending downwards are arranged on the periphery of the cover body, two adjacent extension plates are perpendicular to each other and are in sealed connection, and a vent is arranged at the top of the cover body;

the smoke exhaust pipe is arranged on the ventilation opening;

the catalytic module is arranged between the extension plates, the extension plates are connected with the air exhaust port in a sealing mode, and the smoke exhaust pipe extends out of the shell.

Furthermore, the edge of the extension plate is provided with a first flanging bent towards the outer side, the periphery of the air outlet is provided with a second flanging bent towards the outer side, and the first flanging and the second flanging are connected together in a sealing mode.

Furthermore, the connecting gap between two adjacent extension plates is filled with sealant.

Further, the whole catalytic module is of a plate-shaped structure, and the catalytic module is clamped between the extension plates.

Furthermore, a check valve is arranged in the smoke exhaust pipe.

Further, the air duct includes:

the bottom of the combustion channel forms the air inlet;

the top of the heat exchange channel forms the air outlet;

the combustion channel is connected with the heat exchange channel in a sealing mode, the combustor is arranged in the combustion channel, and the heat exchanger is arranged in the heat exchange channel.

Further, the catalytic module includes a support and a catalyst coating layer formed on the support.

Furthermore, a plurality of vent holes are formed in the carrier.

Further, the carrier has a honeycomb structure.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

through with catalytic module direct mount in the collection petticoat pipe, catalytic module utilizes collection petticoat pipe self structure to accomplish the equipment, and need not additionally to dispose independent casing, make catalytic module integration set up in the collection petticoat pipe, can simplify gas heater's the whole equipment degree of difficulty and reduced manufacturing cost on the one hand, on the other hand, because catalytic module is built-in installs in order to utilize the collection petticoat pipe in the collection petticoat pipe, make overall structure compacter, realize gas heater compact design and reduced gas heater's manufacturing cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of an embodiment of a gas water heater of the present invention;

FIG. 2 is a schematic view of a partial structure of an embodiment of the gas water heater of the present invention;

FIG. 3 is a cross-sectional view of an embodiment of the gas water heater of the present invention;

FIG. 4 is an enlarged view of a portion of area A of FIG. 3;

FIG. 5 is one of the assembling diagrams of the exhaust fume collecting hood and the catalytic module in the embodiment of the gas water heater of the present invention;

FIG. 6 is a second assembly view of the exhaust fume collecting hood and the catalytic module in the first embodiment of the gas water heater of the present invention;

FIG. 7 is an assembly view of the water pump and the shock absorbing mounting assembly in an embodiment of the gas water heater of the present invention;

FIG. 8 is an assembly view of the mounting plate and the shock absorbing mounting assembly in an embodiment of the gas water heater of the present invention;

FIG. 9 is a cross-sectional view of a shock absorbing mounting assembly in an embodiment of the gas water heater of the present invention;

FIG. 10 is an assembly view of the panel, liner and decorative panel of an embodiment of the gas water heater of the present invention;

fig. 11 is a schematic structural view of a decorative plate in an embodiment of the gas water heater of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

First embodiment, as shown in fig. 1 to 4, the present embodiment proposes a gas water heater, wherein the gas water heater generally includes a housing 1, and a burner 2, a heat exchanger 3, a water pump 4, a fan 5, a smoke collecting hood 6, and a water pump 7 provided in the housing 1.

Wherein, the shell 1 is provided with at least an air inlet pipe 101, an inlet pipe 102 and an outlet pipe 103, and the air inlet pipe 101 is used for supplying gas for the burner 2 so as to satisfy the combustion heating of the burner 2. The water inlet pipe 102 is connected with an external water supply pipe, the water inlet pipe 102 is connected with the water pump 4 and is connected with the water inlet of the heat exchanger 3 through the water pump 4, and the water outlet of the heat exchanger 3 is connected with the water outlet pipe. Combustor 2, heat exchanger 3 and collection petticoat pipe 6 are arranged by supreme in proper order down, and combustor 2 ignites the burning gas and heats the water that flows in heat exchanger 3, and the flue gas that produces in the 2 combustion process of combustor then collects through collection petticoat pipe 6 to under the effect of fan 5, the outside of shell 1 is discharged to the flue gas. The above specific control manner and connection manner for the burner 22, the heat exchanger 3, the water pump 4, the fan 5 and the water pump 7 may refer to the configuration manner of a conventional gas water heater, and are not limited and described herein.

The gas water heater proposed by the embodiment is improved in at least the following aspects, and different improvement points are described below with reference to the accompanying drawings.

In the second embodiment, in order to meet the design requirement of compact structure, the assembly process is simplified and the manufacturing cost is reduced. As for the fume collecting hood 6, as shown in fig. 1 to 6, a catalytic module 8 is integrally provided in the fume collecting hood 6, and in addition, in order to meet the integrated installation requirement of the catalytic module 8, the gas water heater further comprises an air duct 9.

Specifically, the fume collecting hood 6, the air duct 9, the fan 5 and the catalytic module 8 are assembled in a matching manner to form an air duct assembly, wherein one port of the air duct 9 is an air inlet, the other port of the air duct 9 is an air outlet, the fume collecting hood 6 is arranged on the air outlet, the fan 5 is arranged on the air inlet, and the catalytic module 8 is arranged in the fume collecting hood 6 and covers the air outlet; the air duct assembly is located in the housing 1 and the burner 2 and heat exchanger 3 are located in the air duct 9.

In the actual assembly process, the burner 2 and the heat exchanger 3 are installed in the air duct 9, the fan 5 is attached to the bottom of the air duct 9, and the smoke collection hood 6 is installed on the top of the air duct 9. With the catalytic module 8, it is previously assembled into the smoke collecting hood 6.

Under the action of the fan 5, air is sucked into the air duct 9, the air participates in the combustion of the burner 2, and high-temperature flue gas heats water in the heat exchanger 3 and enters the smoke collecting hood 6 from the top of the air duct. The flue gas output from the air channel is firstly subjected to catalytic treatment through the catalytic module 8, so that CO in the flue gas is catalytically reduced through the catalytic module 8, and the flue gas output from the fume collecting hood 6 is more environment-friendly.

In this way, the catalytic module 8 can be assembled by the exhaust fume collecting cover 6 without additionally configuring a sheet metal housing for the catalytic module 8 and assembling it independently. On the one hand, the whole assembly difficulty of the gas water heater can be simplified, and the manufacturing cost is reduced, on the other hand, the catalytic module 8 is arranged in the fume collecting hood 6 to be installed by utilizing the fume collecting hood 6, so that the whole structure is more compact, the compact design of the gas water heater is realized, and the manufacturing cost of the gas water heater is reduced.

In one embodiment, the smoke collecting hood 6 includes: a hood 61 and a smoke exhaust pipe 62. Extension plates 611 extending downwards are arranged on the periphery of the cover body 61, two adjacent extension plates 611 are perpendicular to each other and are in sealed connection, and a vent is arranged at the top of the cover body 61; a smoke exhaust pipe 62 is arranged on the ventilation opening; wherein, the catalytic module 8 is arranged between the extension plates 611, the extension plates 611 are connected with the exhaust outlet in a sealing way, and the smoke exhaust pipe 62 extends out of the shell 1.

Specifically, in order to facilitate the secure installation of the catalyst module 8, the edge of the cover 61 forms an extension plate 611, and the plurality of extension plates 611 form an installation space for installing the catalyst module 8. The plurality of extension plates 611 can form a flat installation space to meet the installation requirements of the catalytic module 8. Thus, the catalytic module 8 can be stably and firmly installed in the fume collecting hood 6. In order to improve the sealing performance, a sealing adhesive may be filled in a connection gap between two adjacent extension plates 611. In addition, a check valve 621 may be further provided inside the smoke exhaust pipe 62 to prevent outdoor wind from flowing backward into the hot gas water heater.

In some embodiments, the edge of the extension plate 611 is provided with a first flange 612 bent outward, and the periphery of the exhaust outlet is provided with a second flange (not labeled) bent outward, and the first flange 612 and the second flange are connected together in a sealing manner.

Specifically, the fume collecting hood 6 and the air passage bracket are connected by matching the first flange 612 and the second flange, and a sealing gasket may be arranged between the first flange 612 and the second flange to improve the connection sealing performance. The two flanges can be more convenient for operators to connect and install the air channel and the smoke collecting hood 6 quickly in the assembling process.

In other embodiments, the catalytic module 8 is a plate-like structure as a whole, and the catalytic module 8 is caught between the extension plates 611. Specifically, the catalytic module 8 with a plate-shaped structure can be smoothly installed in the fume collecting hood 6, and the catalytic module 8 can completely shield the air outlet of the air channel, so that CO in the high-efficiency catalytic fume is realized. For the representation entity of the catalytic module 8, devices satisfying CO catalysis in high-temperature flue gas in the conventional technology can be adopted, such as: the catalytic module 8 includes a carrier and a catalyst coating formed on the carrier, and the specific material of the catalyst coating may be a noble metal catalyst, including Pt, Pd, Rh, or the catalyst coating adopts one or more of non-noble metal catalysts Ce, La, Ba, Sr, Zr, Cu, Mn oxide, which is not limited herein. In addition, as for the structural form of the carrier, the carrier with a plate-shaped structure can be provided with vent holes; alternatively, the carrier is of a honeycomb structure.

In some embodiments, the air duct 9 comprises: the combustion channel 91 and the heat exchange channel 92, the air inlet is formed at the bottom of the combustion channel 91, and the air outlet is formed at the top of the heat exchange channel 92; wherein, the combustion channel 91 is connected with the heat exchange channel 92 in a sealing way, the burner 2 is arranged in the combustion channel 91, and the heat exchanger 3 is arranged in the heat exchange channel 92. Specifically, as for the air duct 9, it is possible to adopt a split structure in which the burner 2 is installed through the combustion passage 91 and the heat exchanger 3 is installed through the heat exchange passage 92. On one hand, the installation requirements of the combustor 2 and the heat exchanger 3 are met, and on the other hand, the modularized production is realized so as to facilitate the on-site rapid assembly of operators. For the combustion channel 91 and the heat exchange channel 92, the combustion channel 91 may be a shell of the burner 2 itself, and similarly, the heat exchange channel 92 may be a shell of the heat exchanger 3 itself, so as to effectively reduce the manufacturing cost.

In the third embodiment, in order to effectively reduce the noise generated by the vibration of the water pump 4, the installation mode of the water pump 4 is designed, specifically: as shown in fig. 1 to 4 and 7 to 9, the housing 1 is provided with a mounting hole (not shown), and a damper mounting assembly 41 is further disposed in the housing 1. The shock absorption mounting assembly 41 comprises a shock absorption cushion block 411 and a nut 412, wherein a through hole (not marked) is formed in the shock absorption cushion block 411, and the nut 412 is embedded in the through hole; wherein the damper mounting assembly 41 is located in the housing 1, the bolt 40 is screwed into the nut 412 through the mounting hole, and the water pump 4 is disposed on the damper pad 411.

In the process of installing the water pump 4, the damping mounting assembly 41 is firstly fixed on the shell 1 through the bolt 40, and then the water pump 4 is installed on the damping cushion block 411. And in the actual operation use, in the water pump 4 circular telegram operation in-process, the vibrations that water pump 4 produced transmit to shock pad 411, and shock pad 411 adopts elastic material such as rubber to make usually, can effectually weaken the transmission of vibrations through shock pad 411 to alleviate water pump 4 vibrations and cause shell 1 to produce the noise.

For the way of processing the shock mount assembly 4141, the shock block 411 may be injection molded outside the nut 412 to achieve the effect of embedding the nut 412 in the shock block 411.

Wherein, the end face of the nut 412 can be flush with the end face of the cushion block 411, or the end face of the nut 412 is located in the through hole. In this way, the cushion block 411 can be made to abut against the surface of the housing 1 to block the transmission of vibration.

In the preferred embodiment, in order to facilitate the stable installation of the water pump 4 into the housing 1 through the shock-absorbing mounting assembly 41, the water pump 4 is provided with a mounting plate 42, and the mounting plate 42 is arranged on the shock-absorbing pad 411. Specifically, the water pump 4 is directly fixed on the mounting plate 42, and the mounting plate 42 is connected with the cushion block 411, so as to realize the installation and fixation of the water pump 4.

In some embodiments, in order to facilitate the operator to install the mounting plate 42 on the cushion block 411, a clamping groove 4111 is provided on a side wall of the cushion block 411, and the mounting plate 42 is clamped in the clamping groove 4111. Specifically, adopt draw-in groove 4111 to clamp mounting panel 42, in actual assembly process, operating personnel only need with mounting panel 42 joint to draw-in groove 4111, alright in order to accomplish the equipment.

For example: the damper mount assemblies 41 may be disposed at both ends of the mounting plate 42, and the ends of the mounting plate 42 may be connected to the damper pads 411 on the corresponding side.

Wherein, the tip of mounting panel 42 is provided with two joint portions 421 of mutual disposition, and joint portion 421 extends along mounting panel 42's length direction, and shock attenuation cushion 411 is located between two joint portions 421, and joint portion 421 blocks in draw-in groove 4111. Specifically, the end of the mounting plate 42 is inserted into the clamping groove 4111 through the clamping portion 421, so that the mounting plate 42 is clamped on the cushion block 411. And two mounting plates 42 are clamped between two shock absorption cushion blocks 411, and the mounting plates 42 are arranged at the bottom of the shell 1 in an overhead mode through two shock absorption mounting assemblies 41 so as to meet the mounting requirements of the water pump 4. In addition, can also be provided with flanging structure 422 at the outward flange of joint portion 421, flanging structure 422 pastes and leans on shock pad 411's lateral wall, on the one hand when clamping mounting panel 42, leads through flanging structure 422, and on the other hand, shock pad 411 presss from both sides between the flanging structure 422 of both sides, more is favorable to improving installation reliability and steadiness.

In other embodiments, the circumference of the cushion block 411 forms an annular slot 4111, so that the cushion block 411 can meet the clamping requirements in all directions, and the assembly operation of an operator is facilitated

In order to meet the design requirement of the appearance without exposed screws and reduce the maintenance cost, the following design and improvement are performed on the housing 1. As shown in fig. 1-4, 10 and 11, the casing 1 generally includes a casing 11, a panel 12 and a lining 13, wherein the front surface of the casing 11 is an open structure, the panel 12 is generally adhered to the lining 13 by gluing, and the lining 13 is fixed to the casing 11 by screws. The connection between the panel 12 and the lining plate 13 is not limited and will not be described in detail herein.

In order to facilitate later maintenance, the shell 1 further comprises a decorative plate 14; mounting parts 111 are arranged on two sides of the shell 11; the two sides of the lining plate 13 are provided with connecting parts 131, and the end part of the lining plate 13 is provided with a screw hole 132; the panel 12 is disposed on the lining plate 13, the connecting portion 131 of the side portion of the lining plate 13 is connected to the mounting portion 111 of the corresponding side portion of the housing 11, the screw 130 passes through the screw hole 132 and is connected to the housing 11, and the decorative plate 14 abuts against the lining plate 13 and shields the screw.

In the actual assembly process, the panel 12 is mounted and adhered to the backing plate 13 in a conventional manner, and the backing plate 13 is pre-positioned on the housing 11 by the connection part 131 and the mounting part 111, and then the backing plate 13 is fastened to the housing 11 by the screws 130. And the screw 130 is shielded by the decorative plate 14.

When maintenance is required, the screws 130 can be exposed to remove the panel 12 and the liner 13 together from the housing 11 by simply removing the trim panel 14 from the liner 13 without removing the entire panel 12. Since the whole area of the decorative plate 14 is small, the difficulty of detaching the decorative plate 14 from the liner plate 13 is low, thereby simplifying the difficulty of maintenance.

For the assembling relationship between the decorative plate 14 and the lining plate 13, the decorative plate 14 can be magnetically attached to the lining plate 13 for the convenience of disassembly and assembly.

In some embodiments, the backing plate 13 is a sheet metal part, and the decorative plate 14 is provided with a first permanent magnet (not shown), through which the decorative plate 14 is magnetically attracted to the backing plate 13. Or, the decorative plate 14 is a sheet metal part, the lining plate 13 is provided with a second permanent magnet, and the decorative plate 14 is magnetically attracted on the lining plate 13 through the second permanent magnet. During the actual assembly process, the decorative plate 14 is attracted to the lining plate 13 by magnetic force, so that the disassembly and assembly are convenient for operators.

Similarly, in other embodiments, the decorative panel 14 may be snap-fitted to the backing panel 13. Specifically, the lining plate 13 is provided with a locking groove (not shown), and the inner surface of the decorative plate 14 is provided with a claw (not shown), which is locked in the locking groove 4111. The clamping manner is adopted, so that the decorative plate 14 can be conveniently disassembled and assembled by an operator.

In one embodiment, an inner folded edge 112 is disposed at the edge of the side wall of the housing 11, and a positioning groove is disposed on the inner folded edge 112, and the positioning groove is a mounting portion 111; the edge of welt 13 is provided with the couple, the couple is connecting portion 131, the couple is hung in the constant head tank. Specifically, inner folded edges 112 bent toward the inner side of the housing 11 are correspondingly formed at the edges of the two side walls of the housing 11, so that the positioning liner 13 can be conveniently mounted through the inner folded edges 112.

In another embodiment, the periphery of the lining plate 13 is provided with a flange 132, and the hook is arranged on the flange 132; the flange 132 abuts the inner flange 112. After the lining board 13 is positioned and installed on the shell 11 through the hook, the flange 132 abuts against the inner folded edge 112 to play a supporting role, so that the lining board 13 can be installed on the shell 11 more smoothly.

In some embodiments, the front face of the trim panel 14 is flush with the front face of the panel 12; the panel 12 and the trim panel 14 cover the inner flap 112, respectively. Specifically, the decorative plate 14 and the face plate 12 are flush with each other, so that the overall appearance is flat, and the two side portions of the decorative plate 14 and the face plate 12 cover the inner folded edge 112, which is more beneficial to beautifying the overall appearance.

In a preferred embodiment, the end of the decorative plate 14 away from the panel 12 is provided with a shielding portion 141 bent inward, and the shielding portion 141 shields the corresponding end of the lining plate 13, which is more beneficial to enhancing the appearance effect.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.

Claims

1. A gas water heater, comprising:

a housing;

a burner for burning a combustible gas;

2. The gas water heater of claim 1, wherein the smoke collection hood comprises:

the smoke exhaust pipe is arranged on the ventilation opening;

3. The gas water heater of claim 2, wherein the edge of the extension plate is provided with a first flange bent outward, the periphery of the air outlet is provided with a second flange bent outward, and the first flange and the second flange are connected together in a sealing manner.

4. The gas water heater of claim 2, wherein the joint gap between two adjacent extension plates is filled with a sealant.

5. The gas water heater of claim 2, wherein the catalytic module is of a generally plate-like configuration, the catalytic module being captured between the extension plates.

6. The gas water heater of claim 2, wherein a check valve is disposed in the smoke exhaust pipe.

7. The gas water heater of claim 1, wherein the air duct comprises:

the bottom of the combustion channel forms the air inlet;

the top of the heat exchange channel forms the air outlet;

8. The gas water heater of claim 1, wherein the catalytic module includes a carrier and a catalyst coating formed on the carrier.

9. The gas water heater of claim 8, wherein the carrier body has a plurality of vent holes formed therein.

10. The gas water heater of claim 8, wherein the carrier is a honeycomb structure.