CN215571188U - Gas water heater - Google Patents

Abstract

The utility model discloses a gas water heater, comprising: a housing; a burner for burning a gas; the heat exchanger is used for supplying water to flow for heat exchange; the side wall of the combustion chamber is provided with a convex part which protrudes outwards, the inner wall of the combustion chamber is provided with a heat insulation plate, and an air interlayer region is formed between the heat insulation plate and the convex part; wherein the combustion chamber, the heat exchanger and the burner are provided in the housing, the burner being arranged at the bottom of the combustion chamber and the heat exchanger being arranged at the top of the combustion chamber. The heat dissipation efficiency of the gas water heater is improved so as to improve the user experience.

Description

Gas water heater

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to a gas water heater.

Background

At present, a water heater is a household appliance commonly used in daily life. The water heater is classified into a gas water heater, an electric water heater and the like, wherein the gas water heater is widely used due to the convenience in use. A conventional gas water heater generally includes a burner, a combustion chamber, and a heat exchanger, wherein the burner burns gas in the combustion chamber to heat water flowing through the heat exchanger.

Wherein, the combustion chamber usually adopts sheet metal component to make, for example: the fixing plate structure of the combustion chamber of the gas water heater disclosed in the Chinese patent No. 201810715096.8 specifically comprises a compartment with an annular section formed by a front plate body, a rear plate body, a left plate body and a right plate body, and a heat insulation plate is added in the compartment for heat insulation. However, the heat of the heat insulation plate cannot be rapidly dissipated, so that the external surface temperature of the combustion chamber is high, and the temperature of the shell is high due to heat conduction, so that the user experience is poor.

In view of this, how to design a water heater technology with high heat dissipation efficiency and good user experience is a technical problem to be solved by the utility model.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gas water heater, which improves the heat dissipation efficiency of the gas water heater so as to improve the user experience.

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 gas;

the heat exchanger is used for supplying water to flow for heat exchange;

the side wall of the combustion chamber is provided with a convex part which protrudes outwards, the inner wall of the combustion chamber is provided with a heat insulation plate, and an air interlayer region is formed between the heat insulation plate and the convex part;

wherein the combustion chamber, the heat exchanger and the burner are provided in the housing, the burner being arranged at the bottom of the combustion chamber and the heat exchanger being arranged at the top of the combustion chamber.

Compared with the prior art, the utility model has the advantages and positive effects that: install heat exchanger through forming heat transfer passageway in heat transfer part, so that heat exchanger separates with heat transfer fin, in the in-service use process, the flue that forms between heat transfer part and the heated board is used for carrying high temperature flue gas, and, heat transfer fin in the flue absorbs the heat of high temperature flue gas and conducts to heat exchanger in order to heat the water that flows in the heat exchanger, in order to realize heating water, and because high temperature flue gas and heat exchanger keep apart, avoid the flue gas to cause the corruption to heat exchanger's surface, improve heat exchanger's reliability of use and prolong its life, and then improved gas heater's reliability of use.

Furthermore, the combustion chamber comprises enclosing plates and a panel, the cross sections of the enclosing plates are of U-shaped structures, and the panel is arranged between the two side portions of the enclosing plates.

The combustion chamber with the split structure is assembled by the enclosing plate and the panel to form the combustion chamber with the cylindrical structure, so that the installation requirements of the combustor and the heat exchanger are met, and the combustion chamber can be conveniently assembled by operators in the actual assembly process.

Further, the panel is provided with the protruding part.

Furthermore, the two side parts and the back part of the coaming are provided with the protruding parts.

Furthermore, the part of the heat insulation plate opposite to the convex part is sunken towards the inside of the combustion chamber to form a sunken part.

The concave part is formed on the heat insulation plate, and the concave part and the convex part on the corresponding side are arranged oppositely, so that the thickness of the air interlayer region can be increased more effectively, and the heat insulation effect can be improved more favorably.

Furthermore, the heat insulation plate is located above the concave part and is provided with a step surface, and the step surface is provided with a plurality of first vent holes.

By arranging the first vent hole at the upper part of the air interlayer region, hot air in the air interlayer region can be rapidly discharged through the first vent hole by utilizing the principle of hot air rising, so that the heat dissipation efficiency of the air interlayer region is improved.

Furthermore, the heat insulation plate is located below the depressed part and is provided with a bent part bent towards the inside of the combustion chamber.

The lower part of the heat insulation plate is arranged to be the bending part which is bent towards the inner direction, so that cold air at the bottom can smoothly enter the air interlayer region, and the improvement of the heat dissipation efficiency is facilitated.

Further, the combustor includes casing and a plurality of fire row, the fire row sets up in the casing, the top edge of casing is provided with interior hem, the lower limb of heat insulating board supports and leans on the interior hem.

The inner folded edge is arranged at the top of the shell, and the heat insulation plate is supported and installed by the inner folded edge, so that the heat insulation plate can be stably installed and fixed.

Furthermore, a plurality of second vent holes are formed in the inner folded edge.

Through set up the second venthole on interior hem, the air of bottom can be smooth and easy get into in the air interlayer region via the second venthole to increase the admission capacity of cold air, and then improve the radiating efficiency.

Further, the front side and the rear side of the housing are provided with the inner folded edges.

The requirement of supporting and installing the heat insulation plate with a large area in the front-back direction can be met by arranging the inner folded edges on the front side and the back side of the shell, so that the assembling reliability is improved.

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 introduced 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 creative efforts.

FIG. 1 is a schematic diagram of a heat exchanger according to an embodiment of the present invention;

FIG. 2 is a partial schematic view of a heat exchanger according to an embodiment of the present invention;

FIG. 3 is an assembly view of the burner, heat exchanger, combustion chamber and hood in an embodiment of the heat exchanger of the present invention;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a cross-sectional view of one embodiment of a heat exchanger of the present invention;

FIG. 6 is an enlarged view of a portion of area A of FIG. 5;

FIG. 7 is a schematic view of the structure of the heat shield in an embodiment of the heat exchanger of the present invention.

Description of reference numerals:

a housing 1;

the burner 2, the shell 21, the fire grate 22, the inner folded edge 211 and the second ventilation hole 212;

the heat exchanger 3 and the heat exchange pipe 31;

the combustion chamber 4, the boss 40, the shroud 41, and the face plate 42;

a fan housing 5;

the heat insulation plate 6, the concave part 61, the first vent hole 62 and the bent part 63;

air interlayer region 100.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

The gas water heater adopts gas as a main energy material, and high-temperature heat generated by gas combustion is transferred to cold water flowing through a heat exchanger so as to achieve the purpose of preparing hot water.

The gas water heater generally includes a housing, and a burner, a heat exchanger, a fan housing, and the like disposed in the housing.

Wherein, the gas is carried to combustor department, ignites the gas through ignition to make the combustor burn to the gas of carrying, and then produce the heat.

A heat exchange tube is arranged in the heat exchanger, one end of the heat exchange tube is communicated with a water supply pipeline, and the other end of the heat exchange tube is communicated with a shower head or a water faucet and the like.

The heat generated by the combustion of the gas by the burner is used for heating the heat exchange pipe, so that the water temperature in the heat exchange pipe is increased to form hot water.

When the gas water heater works, cold water provided by the water supply pipeline flows into the heat exchange pipe, is heated into hot water by the heating source generated by the burner, and then flows out from the shower head or the water faucet through the hot water valve for users to use.

Meanwhile, when the gas water heater works, the fan is electrified and runs simultaneously, and smoke generated by the combustor is discharged outdoors under the action of the fan.

In order to reduce the heat transfer, the heat generated by the combustion of the gas in the operation of the burner is conducted to the housing. The embodiment proposes a gas water heater, at least comprising: the combustor comprises a shell 1, a combustor 2, a heat exchanger 3, a combustion chamber 4 and a fan cover 5.

A combustion chamber 4, a heat exchanger 3 and a burner 2 are provided in the housing 1, the burner 2 being arranged at the bottom of the combustion chamber 4 and the heat exchanger 3 being arranged at the top of the combustion chamber 4.

In order to reduce the heat transfer to the outside, the side wall of the combustion chamber 4 is provided with a protrusion 40 protruding outward, the inner wall of the combustion chamber 4 is provided with a heat insulation plate 6, and an air interlayer region 100 is formed between the heat insulation plate 6 and the protrusion 40.

During assembly, the burner 2 is mounted in the bottom region of the combustion chamber 4 and the heat exchanger 3 is mounted in the top region of the combustion chamber 4, while a plurality of heat shields 6 are arranged on the inner wall of the combustion chamber 4 above the burner 2.

In the actual use process, after the gas is conveyed to the combustor 2 for ignition and combustion, the gas is combusted in the area formed by the heat insulation plates 6, the generated high-temperature flue gas rises to heat water flowing in the top heat exchanger 3, and the heat of the high-temperature flue gas is absorbed and finally output to the outside through the fan cover 5.

While most of the heat generated by the combustion of the gas is blocked by the heat-insulating plate 6 during the combustion of the gas by the burner 2, part of the heat is conducted to the outside of the heat-insulating plate 6 due to the heat transfer.

Because the thicker air interlayer region 100 is formed between the heat insulation plate 6 and the convex part 40 of the combustion chamber 4, the heat conduction to the side wall of the combustion chamber 4 can be effectively reduced due to the low heat conductivity of the air in the air interlayer region 100, and finally, the heat conduction to the shell 1 is reduced.

Meanwhile, as the air in the air interlayer region 100 is heated, the cold air at the bottom can rapidly flow into the air interlayer region 100 by utilizing the principle of hot air rising, so that the heat in the air interlayer region 100 is effectively taken away, and the heat dissipation efficiency is further effectively improved.

This embodiment gas heater, install heat exchanger through forming the heat transfer passageway in heat transfer part, so that heat exchanger separates with heat transfer fin, in the in-service use process, the flue that forms between heat transfer part and the heated board is used for carrying the high temperature flue gas, and, heat transfer fin in the flue absorbs the heat of high temperature flue gas and conducts to heat exchanger in order to heat the water that flows in the heat exchanger, in order to realize heating water, and because high temperature flue gas and heat exchanger keep apart, avoid the flue gas to cause the corruption to heat exchanger's surface, improve the reliability of use of seeing heat exchanger and prolong its life, and then improved gas heater's reliability of use.

Wherein, for the housing 1, the material of the housing 1 may be a metal material, such as: the low carbon steel after the surface is sprayed with plastics, the low carbon steel is also called mild steel, and the low carbon steel has the advantage of high temperature resistance. In the gas heater working process, even if there is heat conduction to shell 1 that the inside production of gas heater, shell 1 can make shell 1 be difficult for receiving the damage owing to adopt high temperature resistant material, promotes gas heater's life.

The low carbon steel surface after the spraying plastics is handled is formed with the one deck and moulds the membrane, moulds the membrane and makes shell 1 have insulating ability, so can effectually prevent that the condition of electric leakage from appearing in gas heater. It will be appreciated that the material of the housing 1 may be not only a metallic material, but may be different depending on the particular application, for example, a non-metallic material. Alternatively, a glass panel or other components may be disposed outside the housing, which is not limited or described herein.

The shell 1 is roughly square, so when making gas heater more pleasing to the eye in appearance, can be so that gas heater's structure is compacter, is favorable to gas heater's miniaturization. It is understood that in other embodiments, the housing 1 may have other shapes such as a circle, a polygon, and the like.

As for the burner 2, the burner 2 is used for burning gas and generally includes a housing 21 and a plurality of fire rows 22, the fire rows 22 being disposed in the housing 21. The housing 21 is generally formed by sheet metal and is used for mounting the fire row 22, and the gas is delivered to the burner 2 and is output through the fire rows 22 for combustion.

As for the heat exchanger 3, the heat exchanger 3 is generally provided with a heat exchange pipe 31, and the heat exchange pipe 31 is disposed above the combustion chamber 4. The high-temperature flue gas generated from the burner 2 flows through the surface of the heat exchange pipe 31 to heat the water flowing through the heat exchange pipe 31.

For the fan housing 5, the fan housing 5 is arranged above the heat exchanger 3 to collect the flue gas; the fan is disposed at the bottom of the combustion chamber 4 to supply air into the combustion chamber 4.

The specific structural form and installation manner of the burner 2, the heat exchanger 3, the fan and the fan housing 5 are not limited and described herein.

In some embodiments of the present application, for ease of assembly, the combustion chamber 4 includes a shroud 41 and a panel 42, the shroud 41 having a U-shaped cross-section, and the panel 42 being disposed between two side portions of the shroud 41.

Specifically, in actual assembly, a part of the heat insulating plate 6 may be mounted and fixed on the inner wall of the surrounding plate 41, and at the same time, the burner 2 and the heat exchanger 3 may be mounted in the surrounding plate 41. Then, another heat insulating board 6 is disposed on the inner wall of the panel 42, and the panel 42 is mounted and fixed on the surrounding board 41.

The combustor 4 with a split structure is assembled together by the enclosing plate 41 and the panel 42 to form the combustor 4 with a cylindrical structure, so that the installation requirements of the combustor 2 and the heat exchanger 3 are met, and the combustor 4 can be assembled by an operator conveniently in the actual assembly process.

In some embodiments, raised portions 40 may be provided on the panel 42, and similarly, raised portions 40 may be provided on both sides and back of the shroud 41.

Specifically, by correspondingly forming the protrusions 40 on the four circumferential surfaces of the combustion chamber 4, the air sandwich region 100 surrounded in an annular shape can be formed to improve the heat insulating performance and effectively improve the heat radiation efficiency.

In other embodiments, the portion of the heat shield 6 opposite the raised portion 40 is recessed toward the interior of the combustion chamber 4 to form a recessed portion 61.

Specifically, the heat insulating plate 6 is formed with the recessed portion 61 at a portion corresponding to the protruding portion 40, and after the heat insulating plate 6 is mounted and fixed on the combustion chamber 4, the air interlayer region 100 is formed between the recessed portion 61 and the protruding portion 40, so that the thickness of the air interlayer region 100 can be increased to improve the heat insulating performance and the heat radiation efficiency.

In the actual use process, the heat insulation plate 6 is provided with the concave part 61, and the concave part 61 and the convex part 40 on the corresponding side are oppositely arranged, so that the thickness of the air interlayer region 100 is effectively increased, the distance between the heat insulation plate 6 and the inner wall of the combustion chamber 4 is larger, and the heat insulation effect is better.

In some embodiments, the heat shield 6 is formed with a stepped surface above the recess 61, the stepped surface having a plurality of first vent holes 62 formed therein.

Specifically, the first vent is located at the top region of the air interlayer region 100, and the air in the air interlayer region 100 can be transported upward through the first vent holes 62. In actual use, after the air in the air interlayer region 100 is heated, the hot air can be quickly and effectively discharged upward from the first vent holes 62 by using the principle of the rising of the hot air.

By disposing the first ventilation holes 62 at the upper portion of the air sandwich region 100, the hot air in the air sandwich region 100 can be rapidly discharged through the first ventilation holes 62 by utilizing the principle of hot air rising, so as to improve the heat dissipation efficiency of the air sandwich region 100.

In another embodiment, the heat shield 6 is provided with a bent portion 63 bent toward the inside of the combustion chamber 4 below the recess 61.

Specifically, the bent portion 63 is disposed below the recessed portion 61, and the bent portion 63 can be used for supporting, mounting and fixing, and can increase an air intake area at the bottom of the air interlayer area 100.

The lower portion of the heat insulation plate 6 is provided with the bending portion 63 bent inward, so that the cold air at the bottom can smoothly enter the air interlayer region 100, and the improvement of the heat radiation efficiency is facilitated.

Wherein an inner fold 211 may be provided at the upper edge of the housing 21, and the lower edge of the heat insulating board 6 abuts against the inner fold 211.

Specifically, after the assembly is completed, the inner folded edge 211 may support the bent portion 63 of the heat insulation board 6 to improve the installation reliability of the heat insulation board 6. Wherein inner folds 211 may be provided at the front and rear sides of the case 21.

The inner folded edge 211 is arranged on the top of the housing 21, and the heat insulation board 6 is supported and installed by the inner folded edge 211, so that the heat insulation board 6 can be more stably installed and fixed. The inner folded edges 211 are arranged at the front and rear sides of the shell, so that the requirement of supporting and mounting the heat insulation plate 6 with a large area in the front and rear direction can be met, and the assembling reliability is improved.

In the preferred embodiment, the inner flap 211 is provided with a plurality of second venting holes 212.

Specifically, since the cool air is located below the air interlayer region 100, after the air in the air interlayer region 100 is heated and flows upward, the cool air below can enter the air interlayer region 100 through the second ventilation holes 212.

By providing the second ventilation holes 212 on the inner folded edge 211, the air at the bottom can smoothly enter the air interlayer region 100 through the second ventilation holes 212, so as to increase the entering amount of the cold air, and further improve the heat dissipation efficiency.

The above examples are only intended to illustrate the technical solution of the present invention, but 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 various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A gas water heater, comprising:

a housing;

a burner for burning a gas;

the heat exchanger is used for supplying water to flow for heat exchange;

the side wall of the combustion chamber is provided with a convex part which protrudes outwards, the inner wall of the combustion chamber is provided with a heat insulation plate, and an air interlayer region is formed between the heat insulation plate and the convex part;

wherein the combustion chamber, the heat exchanger and the burner are provided in the housing, the burner being arranged at the bottom of the combustion chamber and the heat exchanger being arranged at the top of the combustion chamber.

2. The gas water heater of claim 1, wherein the combustion chamber includes a shroud and a panel, the shroud having a U-shaped cross-section, the panel being disposed between two sides of the shroud.

3. A gas water heater as claimed in claim 2, wherein the raised portion is provided on the panel.

4. A gas water heater according to claim 3, wherein said raised portions are provided on both side portions and a back portion of said skirt.

5. The gas water heater according to any one of claims 1 to 4, wherein a portion of the heat insulating plate opposite to the convex portion is recessed toward the inside of the combustion chamber to form a recess.

6. The gas water heater of claim 5, wherein the heat shield is formed with a stepped surface above the recess, the stepped surface having a plurality of first vent holes disposed therein.

7. The gas water heater of claim 5, wherein the heat insulating plate is provided with a bent portion bent toward the inside of the combustion chamber below the recess portion.

8. The gas water heater of claim 7, wherein the burner includes a housing and a plurality of fire rows disposed in the housing, an upper edge of the housing being provided with an inner fold against which a lower edge of the heat shield abuts.

9. The gas water heater of claim 8, wherein a plurality of second vent holes are provided in said inner flap.

10. The gas water heater of claim 9, wherein the front and rear sides of the housing are provided with the inner folds.

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