CN219976416U - Combustion device and gas stove - Google Patents

Abstract

The utility model discloses a combustion device and a gas stove, belongs to the technical field of kitchen heating equipment, and aims to solve the technical problem that a fire cover of the existing gas stove is easy to produce abnormal sound. The combustion device comprises a gas distribution plate, a first fire cover and a heat dissipation piece, wherein the first fire cover is arranged on the gas distribution plate, the heat dissipation piece is arranged on the gas distribution plate, and the thermal expansion coefficient of the material of the gas distribution plate is different from that of the material of the first fire cover. The deformation degree of the first fire cover or the gas distribution plate after being heated and deformed is relatively smaller, so that abnormal sound generated by the first fire cover or the gas distribution plate after the temperature of the first fire cover or the gas distribution plate is reduced is smaller when the combustion device is closed. The heat dissipation piece is arranged on the gas distribution plate, so that heat conducted to the gas distribution plate by the first fire cover can be dissipated more efficiently, the temperature of the first fire cover and the temperature of the gas distribution plate cannot be too high, the deformation degree of materials of the first fire cover and the gas distribution plate can be reduced, and abnormal sound generated after the temperature of the first fire cover and the temperature of the gas distribution plate are reduced can be reduced.

Description

Combustion device and gas stove

Technical Field

The utility model belongs to the technical field of kitchen heating equipment, and particularly relates to a combustion device and a gas stove.

Background

A gas range is a combustion apparatus that generates flames by igniting a mixed gas of gas and air to heat a to-be-heated member such as a cooker placed on the gas range.

In the related art, in the operation process of the gas stove, the flow speed of the mixed air flow at the air inlet of the gas distribution plate is accelerated, so that flame generated at the position, adjacent to the air inlet, on the gas distribution plate is easy to generate a fire removing phenomenon, and the gas distribution plate is heated unevenly, so that abnormal sound can be generated on the gas distribution plate.

Disclosure of Invention

The utility model aims to at least solve the technical problem that the fire cover of the existing gas stove is easy to generate abnormal sound to a certain extent. To this end, the utility model provides a combustion device and a gas stove.

The embodiment of the utility model provides a combustion device, which comprises:

an air distribution plate;

the first fire cover is covered on the gas distribution plate, a first combustion air passage is formed by surrounding the first fire cover and the gas distribution plate, and a first fire hole is formed in the first fire cover; and

the heat dissipation piece is arranged on the air distribution disc;

wherein, the material thermal expansion coefficient of the first fire cover is different from the material thermal expansion coefficient of the gas distribution plate.

In the combustion device provided by the embodiment of the utility model, the material heat conductivity coefficient of the first fire cover is smaller than that of the gas distribution plate, so that the deformation degree of one of the first fire cover or the gas distribution plate after the first fire cover and the gas distribution plate are heated is smaller, therefore, the stress generated in the heated deformation of the first fire cover or the gas distribution plate is relatively smaller, and when the temperature of the first fire cover and the gas distribution plate is reduced when the combustion device is closed, the internal stress effect of the first fire cover or the gas distribution plate is smaller, thereby reducing abnormal sound generated by the first fire cover to a certain degree, and improving the user experience. The heat dissipation piece is arranged on the gas distribution plate, so that heat conducted to the gas distribution plate by the first fire cover can be dissipated more efficiently, the heat of the first fire cover can be conducted to the gas distribution plate efficiently, the temperature of the first fire cover is further reduced, and finally the phenomenon that abnormal sound is generated between the first fire cover and the gas distribution plate in the process of opening to closing the combustion device is improved.

In some embodiments, the first fire cover has a material thermal expansion coefficient that is less than a material thermal expansion coefficient of the gas distribution plate, and the gas distribution plate has a material thermal conductivity that is greater than a material thermal conductivity of the first fire cover.

In some embodiments, the heat dissipation element is disposed on a side of the gas distribution plate facing away from the first fire cover.

In some embodiments, the heat dissipation elements are strip-shaped structural members, the number of the heat dissipation elements is a plurality of, the heat dissipation elements are arranged along the radial direction of the gas distribution disc, and the plurality of heat dissipation elements are distributed at intervals along the circumferential direction of the gas distribution disc.

In some embodiments, the heat sink is integrally formed with the gas distribution plate.

In some embodiments, the first combustion gas path is annular.

In some embodiments, the gas distribution plate comprises a chassis, a first ring portion and a second ring portion, the first ring portion and the second ring portion are both arranged on the chassis, the second ring portion is arranged on the first ring portion in a surrounding mode at intervals, the first fire cover is used for wrapping at least part of the first ring portion and the second ring portion in the first ring portion, the first combustion air passage is arranged between the first ring portion and the second ring portion, and the first fire holes are formed in the side wall of the first fire cover and distributed along the circumferential direction of the first fire cover.

In some embodiments, the outer edge of the chassis is provided with a supporting surface, the supporting surface is supported by the first fire cover, a positioning groove is formed in the outer side wall of the first ring part, a positioning block matched with the positioning groove is formed in the first fire cover, and the positioning block is embedded in the positioning groove.

In some embodiments, the combustion device further comprises a gas equalizing plate, the gas dividing plate is provided with a gas inlet, the gas inlet is communicated with the first combustion air passage, the gas equalizing plate is opposite to the gas inlet, and the gas equalizing plate is spaced from the gas inlet and the first fire hole.

In some embodiments, the air equalizing sheet is provided with an air equalizing hole penetrating through the air equalizing sheet, and the air equalizing hole is opposite to the air inlet.

In some embodiments, the ratio of the inner diameter of the first fire hole to the inner diameter of the gas equalizing hole is 1.5 to 2 to 1.5 to 3.

In some embodiments, one end of the air equalizing piece is connected with one side inner wall of the first combustion air passage, the other end of the air equalizing piece and the other side inner wall of the first combustion air passage have a gap, and the air equalizing piece is obliquely arranged towards the first fire hole.

In some embodiments, a fixing groove is formed in the gas distributing disc, and at least part of the gas homogenizing plate is inserted into the fixing groove.

In some embodiments, the combustion device further comprises a second fire cover, the second fire cover is arranged on the gas distribution plate, the second fire cover and the gas distribution plate enclose to form a second combustion air passage, the second fire cover is provided with a second fire hole, and the first fire cover encloses to the second fire cover.

In some embodiments, the first fire cover and the second fire cover are made of stainless steel, and the gas distributing plate is made of aluminum alloy.

In a second aspect, based on the above combustion device, an embodiment of the present utility model further provides a gas stove, including the above combustion device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic view of a combustion apparatus according to an embodiment of the present utility model;

FIG. 2 illustrates a schematic structural view of a heat sink of a combustion apparatus according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram showing a structure in which a flow equalizing sheet of a combustion device disclosed in an embodiment of the present utility model is mounted on a gas distributing plate;

FIG. 4 shows a schematic structural view of a gas distribution plate of a combustion apparatus according to an embodiment of the present utility model;

FIG. 5 illustrates a schematic internal structure of one embodiment of a combustion apparatus disclosed in an embodiment of the present utility model;

FIG. 6 is a schematic view showing an internal structure of another embodiment of a combustion apparatus according to an embodiment of the present utility model;

FIG. 7 shows an enlarged schematic view of the display of area A of FIG. 6;

FIG. 8 is a schematic view showing the structure of a gas distribution plate under another embodiment of the combustion apparatus disclosed in the embodiment of the present utility model;

FIG. 9 shows an enlarged schematic view of the display of region B of FIG. 8;

fig. 10 shows a schematic structural diagram of a flow equalizing sheet of a combustion device according to an embodiment of the present utility model.

Reference numerals:

100-an air distribution disc, 110-a chassis, 111-an air inlet, 112-a fixed groove, 113-a supporting surface, 120-a first annular part, 130-a second annular part, 131-a positioning groove, 140-a third annular part, 150-a first combustion air passage, 160-a second combustion air passage, 170-a heat radiating piece,

200-a first fire cover, 210-a first plate body, 220-a second plate body, 221-a first fire hole, 222-a positioning block, 230-a third plate body,

300-air equalizing sheet, 310-plug-in part, 320-air equalizing part, 321-air equalizing hole,

400-second fire cover, 410-second fire hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all the directional indicators in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model is described below with reference to specific embodiments in conjunction with the accompanying drawings:

referring to fig. 1 and 2, an embodiment of the present utility model discloses a combustion apparatus including a gas distribution plate 100, a first fire cover 200, and a heat sink 170. The structure of the combustion device can be applied to a gas stove or other devices for generating flame by burning fuel gas.

The gas distribution plate 100 is a basic component of the combustion device of the present utility model, the gas distribution plate 100 may provide a mounting base for other at least partial components of the combustion device of the present utility model, the first fire cover 200 may be covered on the gas distribution plate 100, the first fire cover 200 may form a first combustion air channel 150 around the gas distribution plate 100, and the first fire cover 200 is provided with a first fire hole 221 communicated with the first combustion air channel 150. Specifically, a cavity structure with an opening can be arranged in the gas distribution plate 100, and when the first fire cover 200 is covered on the gas distribution plate 100, the first fire cover 200 can close the opening of the cavity structure in the gas distribution plate 100, so that the inner wall of the gas distribution plate 100 and the first fire cover 200 together form the inner wall of the first combustion air channel 150. The fuel gas can be input into the first combustion air passage 150 of the combustion device through the injection pipe, the first combustion air passage 150 of the combustion device can be specifically arranged into an annular or circular structure, so that when the fuel gas is input into the first combustion air passage 150, the fuel gas can be uniformly distributed along the circumferential direction of the first combustion air passage 150, correspondingly, the first fire holes 221 on the first fire cover 200 can also be uniformly distributed along the circumferential direction of the first fire cover 200, and the fuel gas in the first combustion air passage 150 can be ignited by the ignition mechanism of the combustion device to form flame after being discharged through the first fire holes 221, and the flame can be uniformly distributed.

It should be understood that the flame generated by the combustion device is mainly distributed at the first fire hole 221 of the first fire cover 200, so that the temperature of the first fire cover 200 may be increased after the first fire cover 200 is continuously heated by the flame, and because the first fire cover 200 is covered on the gas distribution plate 100, the heat of the first fire cover 200 may be conducted to the gas distribution plate 100, but the flame generated by the combustion device is mainly distributed at the first fire cover 200, so that the temperature of the first fire cover 200 is higher after the first fire cover 200 is continuously heated, the first fire cover 200 is in a overheat high temperature state for a long time after the gas device is used, so that the first fire cover 200 may be made of stainless steel material, and the stainless steel material has good high temperature resistance, mechanical compression resistance and corrosion resistance, so that the first fire cover 200 made of stainless steel may have better structural stability after long time use.

However, it should be further understood that in the combustion apparatus, since the gas input to the gas distribution plate 100 through the injection pipe has a relatively high flow rate, the gas still has a relatively high flow rate after being input into the gas distribution plate 100 through the injection pipe, and the gas with a relatively high flow rate is easily flushed out of the first fire cover 200 through the first fire hole 221 of the first fire cover 200 and is far away from the first fire cover 200, so that the flame height generated by the portion of the first fire cover 200 corresponding to the communication position between the gas distribution plate 100 and the injection pipe is relatively high and far away from the first fire cover 200, and thus the temperature of each portion of the first fire cover 200 has a certain temperature difference. The thermal conductivity of the stainless steel material is relatively poor, so that the temperature difference of each part of the first fire cover 200 is relatively large due to uneven heating of the first fire cover 200 made of the stainless steel material, so that deformation amounts generated after the parts of the first fire cover 200 are heated are different, and abnormal sound is easily generated in the first fire cover 200 in the running process of the combustion device.

In the present utility model, the thermal expansion coefficient of the material of the first fire cover 200 may be set smaller than that of the material of the gas distribution plate 100, that is, the first fire cover 200 and the gas distribution plate 100 are made of different materials, when the combustion device is opened, the first fire cover 200 and the gas distribution plate 100 are heated, and because the first fire cover 200 is opened with the first fire cover 221, the first fire cover 200 is heated more fully, so that the temperature of the first fire cover 200 is higher, the deformation degree of the first fire cover 200 after being heated is smaller than that of the gas distribution plate 100, so that the stress effect generated inside the heated first fire cover 200 is relatively smaller, and when the temperature of the combustion device is lowered, abnormal sound generated by the first fire cover 200 can be lowered to a certain extent, so that the combustion device of the present utility model is quieter in the use process, and the user experience is improved.

In the present utility model, since the first fire cover 200 is covered on the gas distribution plate 100, part of the heat of the first fire cover 200 is conducted to the gas distribution plate 100, and the material thermal conductivity of the gas distribution plate 100 is not less than that of the first fire cover 200, so that the gas distribution plate 100 has better thermal conductivity than the first fire cover 200, and therefore, the heat of the first fire cover 200 is more easily conducted to the gas distribution plate 100, so that the temperature of the first fire cover 200 can be reduced to a certain extent, and the deformation degree generated by heating each part of the first fire cover 200 is relatively small, so as to reduce abnormal sound generated after the combustion device is opened to a certain extent. In addition, since the gas distribution plate 100 has relatively good heat conducting performance, the heat conducted to the gas distribution plate 100 by the first fire cover 200 can be relatively uniformly spread on each part of the gas distribution plate 100, so that the temperature difference of each part of the gas distribution plate 100 is relatively small, the deformation degree of each part of the gas distribution plate 100 under the condition of being heated is relatively close, abnormal sound generated by the gas distribution plate 100 after the gas device is started can be effectively prevented, and finally, the user experience is better when the combustion device is used.

The heat dissipation member 170 is connected with the gas distribution plate 100, the heat dissipation area of the surface of the gas distribution plate 100 can be increased by the heat dissipation member 170, so that the heat conducted to the gas distribution plate 100 by the first fire cover 200 can be further conducted to the heat dissipation member 170, and thus the gas distribution plate 100 and the heat dissipation member 170 can exchange heat with air at the same time, and the heat of the gas distribution plate 100 can be dissipated more efficiently. Accordingly, after the heat of the gas distribution plate 100 is rapidly dissipated, the heat of the first fire cover 200 can be more efficiently conducted to the gas distribution plate 100, so that the temperatures of the first fire cover 200 and the gas distribution plate 100 can be further reduced, the degree of thermal deformation of each part of the gas distribution plate 100 and the first fire cover 200 is reduced, and finally abnormal sound generated by the gas distribution plate 100 and the first fire cover 200 after the combustion device is started is reduced.

In the combustion device provided by the embodiment of the utility model, the material heat conductivity coefficient of the gas distribution plate 100 is not smaller than that of the first fire cover 200, so that the heat of the first fire cover 200 can be more efficiently conducted to the gas distribution plate 100, and the temperature of the first fire cover 200 can be reduced, so that the degree of thermal deformation of each part of the first fire cover 200 is reduced. The heat dissipation member 170 is disposed on the gas distribution plate 100, so that heat conducted from the first fire cover 200 to the gas distribution plate 100 can be dissipated more efficiently, and thus heat of the first fire cover 200 can be conducted to the gas distribution plate 100 more efficiently, so that the temperature of the first fire cover 200 is further reduced, and finally, the abnormal sound generated by the first fire cover 200 after the combustion device is opened is improved.

In some embodiments, referring to fig. 2, in order to make the heat dissipation efficiency of the heat dissipation element 170 of the present utility model higher, the heat dissipation element 170 may be specifically disposed on a side of the gas distribution plate 100 facing away from the first fire cover 200, that is, on a bottom side of the gas distribution plate 100 when the combustion device of the present utility model is placed on a plane. It should be appreciated that when the combustion device is turned on, the flame generated by the combustion device is primarily concentrated at the first flame cover 200, such that the air temperature adjacent to the first flame cover 200 is relatively high, and the air temperature away from the first flame cover 200 is relatively low, so that the air temperature of the side of the gas distribution plate 100 facing away from the first flame cover 200 is relatively low. The heat dissipation element 170 is located at a side of the gas distribution plate 100 facing away from the first fire cover 200, so that the heat exchange efficiency between the heat dissipation element 170 and the air is higher, and therefore, the heat dissipation of the heat dissipation element 170 is easier, and finally, the heat conduction efficiency from the first fire cover 200 to the gas distribution plate 100 is higher. In addition, it should be further understood that the heat-resistant performance of a portion of the material with better thermal conductivity may be relatively poor, so if the heat sink 170 of the present utility model is made of a material with better thermal conductivity and poor heat-resistant performance, the heat sink 170 is relatively far away from the flame at the first fire cover 200, so that the heat sink 170 is prevented from being damaged due to overheating to some extent, so as to protect the heat sink 170.

In some embodiments, referring to fig. 2, in order to enable the heat of the gas distribution plate 100 of the present utility model to be more fully dissipated, the number of the heat dissipation elements 170 of the present utility model may be set to be plural, the plurality of heat dissipation elements 170 may be set to be distributed along the circumferential direction of the gas distribution plate 100, and gaps are provided between the adjacent heat dissipation elements 170, and the plurality of heat dissipation elements 170 are connected with the circumferential portions of the gas distribution plate 100, so that the heat of each portion of the gas distribution plate 100 may be closely conducted to the corresponding heat dissipation element 170, and thus the heat of each portion of the gas distribution plate 100 may be efficiently dissipated through the heat dissipation element 170, and finally the heat of the first fire cover 200 may be efficiently conducted to the gas distribution plate 100, so that the temperature of the first fire cover 200 may be reduced.

The plurality of heat dissipation elements 170 may be uniformly distributed on the gas distribution plate 100, so that heat dissipation effects of each part of the gas distribution plate 100 may be relatively close, and thus temperatures of each part of the gas distribution plate 100 are relatively close, and abnormal sound generated by the gas distribution plate 100 after the combustion device is started may be prevented.

In some embodiments, referring to fig. 2, the heat dissipation member 170 of the present utility model may be specifically configured as a strip structure, and the heat dissipation member 170 may be disposed along a radial direction of the gas distribution plate 100, and thus, the heat dissipation member 170 may function to support the gas distribution plate 100, so that the structural strength of the gas distribution plate 100 is increased. Specifically, the heat dissipation element 170 is an elongated structural member, and the heat dissipation element 170 is disposed protruding from a surface of the gas distribution plate 100 opposite to the first fire cover 200, so that a thickness dimension of a portion of the gas distribution plate 100 formed integrally with the heat dissipation element 170 is relatively large, and when the gas distribution plate 100 is subjected to an external force to have a deformation tendency, the heat dissipation element 170 can resist the deformation tendency of the gas distribution plate 100 due to the external force, so that the structure of the gas distribution plate 100 can be kept stable.

In addition, after the structural strength of the gas distribution plate 100 is enhanced by the heat dissipation member 170, the gas distribution plate 100 may have a thin-wall structure, so that the overall weight of the gas distribution plate 100 is reduced, and the thin-wall gas distribution plate 100 also has a better heat conduction and dissipation effect, so that the temperature of the gas distribution plate 100 may be reduced, and further the temperature of the first fire cover 200 may be reduced.

In some embodiments, in order to facilitate the preparation of the gas distribution plate 100 and the heat sink 170, the gas distribution plate 100 and the heat sink 170 may be integrally formed, and thus, the gas distribution plate 100 and the heat sink 170 may be formed through an integrally forming process when the gas distribution plate 100 and the heat sink 170 are prepared. The gas distribution plate 100 and the heat dissipation member 170 are integrally formed, so that the connection reliability of the gas distribution plate 100 and the heat dissipation member 170 is better, and meanwhile, the gas distribution plate 100 and the heat dissipation member 170 can be mutually supported, so that the gas distribution plate 100 and the heat dissipation member 170 can have better structural stability. Specifically, the gas distribution plate 100 may be manufactured through a casting process in which the gas distribution plate 100 and the heat sink 170 are integrally formed.

In addition, in other embodiments, the heat dissipation element 170 and the air distribution plate 100 of the present utility model can be separately manufactured and assembled, and the heat dissipation element 170 can be fixed on the air distribution plate 100 by screw bolts, so that the heat dissipation element 170 and the air distribution plate 100 can be disassembled. Specifically, corresponding screw holes can be formed in the heat dissipation part 170 and the air distribution plate 100, and the heat dissipation part 170 and the air distribution plate 100 can be fixed by screwing bolts into the screw holes of the heat dissipation part 170 and the air distribution plate 100, so that the number of the heat dissipation parts 170 can be set according to the actual heat dissipation requirement of the air distribution plate 100, a plurality of screw holes formed in the air distribution plate 100 can be uniformly distributed at intervals along the circumferential direction of the air distribution plate 100, and the heat dissipation parts 170 can be selectively arranged at the screw holes of the air distribution plate 100 according to requirements, so that the arrangement mode of the heat dissipation parts 170 can be flexibly adjusted, and the heat dissipation effect of the air distribution plate 100 is better.

In some embodiments, referring to fig. 3 to 5, the first combustion air duct 150 of the present utility model is specifically an annular channel structure, and accordingly, the first fire holes 221 on the first fire cover 200 may be distributed along the extending direction of the first combustion air duct 150, and the first fire holes 221 may be specifically provided in plurality, and the plurality of first fire holes 221 may be distributed at intervals along the extending direction of the first combustion air duct 150, so that annular flames may be formed at the first fire cover 200, and the distribution of flames generated by the combustion device may be more uniform, so that the cookware and cookware heated by the combustion device may be heated more uniformly. Of course, the number of the first fire holes 221 may be set to one, so that the first fire holes 221 may be set to annular continuous strip holes provided along the first fire cover 200.

Specifically, referring to fig. 4, the gas distribution plate 100 may include a chassis 110, a first ring portion 120, and a second ring portion 130, where the chassis 110 is a base member of the gas distribution plate 100, the chassis 110 may provide a mounting base for other at least partial components of the gas distribution plate 100, the first ring portion 120 and the second ring portion 130 are annular sheet structures, the first ring portion 120 and the second ring portion 130 are all vertically disposed on the chassis 110, the second ring portion 130 encloses the first ring portion 120, and a certain gap is formed between the second ring portion 130 and the first ring portion 120, so that an open cavity space is formed between the second ring portion 130 and the first ring portion 120, and when the first fire cover 200 is disposed on the gas distribution plate 100, the first fire cover 200 can seal the cavity space between the first ring portion 120 and the second ring portion 130, so that the first fire cover 200, the first enclosing portion 120, the second ring portion 130, and the chassis 110 are disposed to form the first combustion air flue 150.

Referring to fig. 5, the first fire cover 200 may include a first plate 210, a second plate 220 and a third plate 230 connected to each other, wherein the second plate 220 and the third plate 230 are bent with respect to the first plate 210, and the third plate 230 may be connected to a side of the first plate 210 facing away from the second plate 220, so that the second plate 220 and the third plate 230 may be disposed at opposite intervals, the second plate 220 and the third plate 230 are annular plates, and a cavity space between the second plate 220 and the third plate 230 may accommodate at least a portion of the gas distribution plate 100. Therefore, when the first fire cover 200 is mounted to the gas distribution plate 100, the second plate 220 and the third plate 230 may sandwich the first ring portion 120 and the second ring portion 130 therebetween, specifically, the second plate 220 and the third plate 230 are respectively attached to opposite sides of the first ring portion 120 and the second ring portion 130, so that at least a portion of the first ring portion 120 and at least a portion of the second ring portion 130 are located in a region between the second plate 220 and the third plate 230, and the second plate 220 is an outer side wall of the first fire cover 200, and therefore the first fire hole 221 may be opened on the second plate 220.

In some embodiments, in order to tightly fit the first fire cover 200 and the gas distribution plate 100, the second plate 220 and the third plate 230 may clamp the first ring portion 120 and the second ring portion 130 in an interference fit manner, so that the second plate 220 may be tightly fitted to the outer side wall of the first ring portion 120, and the third plate 230 may be tightly fitted to the outer side wall of the second ring portion 130. Specifically, in the case that the first fire cover 200 is not assembled with the gas distribution plate 100, the distance between the second plate 220 and the third plate 230 is smaller than the distance between the opposite sides of the first ring 120 and the second ring 130, so that the second plate 220 and the third plate 230 can be tightly connected with the first ring 120 and the second ring 130 after the first ring 120 and the second ring 130 are clamped between the second plate 220 and the third plate 230, thereby preventing the first fire cover 200 and the gas distribution plate 100 from being separated.

Referring to fig. 6 to 9, in some embodiments, in order to further reduce abnormal noise generated by the first fire cover 200 and the gas distribution plate 100, it may be achieved by preventing the connection of the first fire cover 200 and the gas distribution plate 100 from being too tight, specifically, when the first fire cover 200 and the gas distribution plate 100 have good connection tightness, the connection of the first fire cover 200 and the gas distribution plate 100 may not be too tight, so that the interaction force of the first fire cover 200 and the gas distribution plate 100 is reduced after the first fire cover 200 and the gas distribution plate 100 are deformed by heat, thereby reducing the deformation amount generated by the interaction of the first fire cover 200 and the gas distribution plate 100.

The outer sidewall of the gas distribution plate 100 may be provided with a positioning groove 131, specifically located on one side of the second ring portion 130 opposite to the first ring portion 120, and the first fire cover 200 may be provided with a positioning block 222 that is matched with the positioning groove 131 of the gas distribution plate 100, when the first fire cover 200 is enclosed on the first ring portion 120 and the second ring portion 130 of the gas distribution plate 100, the positioning block 222 is embedded in the positioning groove 131 of the gas distribution plate 100, so that the positioning block 222 is limited in the positioning groove 131, and thus the first fire cover 200 and the gas distribution plate 100 may be fixed. Specifically, when the first fire cover 200 is assembled on the gas distribution plate 100, the second plate 220 and the third plate 230 of the first fire cover 200 can be first arranged around the first ring 120 and the second ring 130 of the gas distribution plate 100, the second plate 220 and the second ring 130 are in a fit but not tight fit state, the third plate 230 and the first ring 120 are also in a fit but not tight fit state, then an external force is applied to the part of the second plate 220 corresponding to the positioning groove 131 of the second ring 130, so that the part corresponding to the positioning groove 131 of the second plate 220 and the positioning groove 131 protrudes towards the second ring 130, a positioning block 222 embedded in the positioning groove 131 is formed on the second plate 220, and then the external force can be applied to the third plate 230 to enable the third plate 230 and the first ring 120 to be tightly fit, so that the connection tightness between the first fire cover 200 and the gas distribution plate 100 is better, and the first fire cover 200 and the gas distribution plate 100 are kept with the rest for the first fire cover 200 and the gas distribution plate 100, and the first fire cover 200 is deformed, and the heat is reduced, and the heat is finally the fire is deformed, and the fire is generated.

In some embodiments, referring to fig. 3 and 5, in order to make the first fire cover 200 of the present utility model be heated uniformly so that the heated deformation degree of each portion of the first fire cover 200 is close, the combustion apparatus of the present utility model may further include a flow equalizing sheet 300, wherein the gas dividing plate 100 is provided with a gas inlet 111, the gas inlet 111 of the gas dividing plate 100 is connected with an injection pipe, the injection pipe may input gas into the first combustion air passage 150 through the gas inlet 111 of the gas dividing plate 100, and the gas output through the gas inlet 111 of the gas dividing plate 100 has a faster flow rate, the flow equalizing sheet 300 may be disposed in the first combustion air passage 150, the flow equalizing sheet 300 is opposite to the gas inlet 111 of the gas dividing plate 100, and the flow equalizing sheet 300 has a gap with both the gas inlet 111 of the gas dividing plate 100 and the first fire hole 221 of the first fire cover 200, so that the flow equalizing sheet 300 may block the gas flow output from the gas inlet 111 of the gas dividing plate 100, so that the flow rate of the gas flow may be reduced, thereby preventing a part of flame generated by the combustion apparatus from being spaced from the first fire cover 200. After the gas flow is blocked and decelerated by the flow equalizing sheet 300, the gas flow can be fully diffused along the first combustion air channel 150, so that the gas quantity of each partial area in the first combustion air channel 150 is consistent, and the flow rate of the gas discharged through each first fire hole 221 of the first fire cover 200 is consistent, so that the heights of each part of the annular flame generated after the combustion device is started and the relative positions of each part of the annular flame and the first fire cover 200 are consistent, each part of the first fire cover 200 can be heated uniformly, and abnormal sound generated by the first fire cover 200 can be prevented to a certain extent finally.

In some embodiments, referring to fig. 3, in order to further make the fuel amounts of the partial areas in the first combustion air flue 150 more uniform, the air equalizing plate 300 may be provided with air equalizing holes 321, the air equalizing holes 321 of the air equalizing plate 300 are through holes penetrating the air equalizing plate 300, and the air equalizing holes 321 are opposite to the air inlets 111 of the air dividing plate 100, so that the air equalizing plate 300 can block most of the fuel gas input by the air inlets 111 of the air dividing plate 100, and a small part of the fuel gas can be directly discharged from the first fire holes 221 of the corresponding areas after passing through the air equalizing holes 321 of the air equalizing plate 300 and ignited, so that the combustion effects of the parts of the outer ring flame generated by the combustion device of the present utility model are more uniform. The number of the air equalizing holes 321 of the air equalizing plate 300 can be multiple, the air equalizing holes 321 are distributed in the air equalizing plate 300 at intervals, and the air inlets are opposite to the air inlets 111 of the air distributing plate 100, so that the gas flow passing through the air equalizing plate 300 can not be too low by arranging the air equalizing holes 321, and meanwhile, the air equalizing plate 300 can have a good deceleration blocking effect on the gas flow discharged from the air inlets 111 of the air distributing plate 100.

In some embodiments, the aperture of the gas uniformity holes 321 of the gas uniformity sheet 300 of the present utility model may be set to be larger than the aperture of the first fire holes 221 on the first fire cover 200, such that the gas flow rate that can pass through the gas uniformity holes 321 of the gas uniformity sheet 300 is larger than the gas flow rate that can pass through the first fire holes 221 of the first fire cover 200. Specifically, it should be understood that, after the air-equalizing sheet 300 is disposed in the first combustion air channel 150, the air-equalizing sheet 300 may divide the first combustion air channel 150 into the areas located on two opposite sides of the air-equalizing sheet 300, and by setting the aperture of the air-equalizing hole 321 of the air-equalizing sheet 300 to be larger than that of the first fire hole 221, the amount of gas reaching the side of the air-equalizing sheet 300 opposite to the air-distributing disc 100 through the air-equalizing hole 321 is sufficient, so as to prevent the amount of gas in the area corresponding to the air-equalizing sheet 300 in the first combustion air channel 150 from being too small, and thus the gas may be more uniformly distributed in the first combustion air channel 150. The ratio of the aperture of the first fire hole 221 of the first fire cover 200 to the aperture of the air equalizing hole 321 of the air equalizing sheet 300 may be specifically set to be between 1.5 to 2 and 1.5 to 3, and in this ratio range, the fuel gas having a relatively stable flow rate may be discharged through the first fire hole 221 corresponding to the air equalizing sheet 300, so that the heating effect of each portion of the first fire cover 200 may be relatively uniform. Specifically, the aperture of the gas-equalizing hole 321 of the gas-equalizing sheet 300 may be set to 2.5mm, and the aperture of the first fire hole 221 of the first fire cover 200 may be set to 1.5mm.

In some embodiments, referring to fig. 5, the air-homogenizing plate 300 of the present utility model may be disposed obliquely in the first combustion air duct 150, specifically, the air-homogenizing plate 300 has an oblique disposition toward the sidewall of the first fire cover 200, such that when the combustion apparatus of the present utility model is disposed on a horizontal plane, an angle is formed between the air-homogenizing plate 300 and the horizontal plane. The gas equalizing plate 300 is inclined towards the side wall of the first fire cover 200, so that the gas equalizing plate 300 is relatively closer to the side wall of the first fire cover 200, and the first fire holes 221 are formed in the side wall of the first fire cover 200, and the gas equalizing plate 300 is relatively far away from the air inlets 111 of the gas distribution plate 100, so that the flow rate of the gas flow passing through the gas equalizing holes 321 of the gas equalizing plate 300 is not too slow, and the gas can be more uniformly distributed in the first combustion air flue 150. One end of the air equalizing sheet 300 may be connected to an inner wall of one side of the first combustion air path 150, so that the air equalizing sheet 300 may be fixed in the first combustion air path 150, and the other end of the air equalizing sheet 300 may be disposed to have a gap with an inner wall of the other side of the first combustion air path 150, so that a part of the fuel gas may pass through the gap between the air equalizing sheet 300 and the first combustion air path 150, and thus the amount of fuel gas that may be discharged from the first fire hole 221 corresponding to the air equalizing sheet 300 may be prevented to a certain extent from being too small, so as to equalize the fuel gas distribution in the first combustion air path 150. In addition, since the gas-equalizing sheet 300 is inclined, one surface of the gas-equalizing sheet 300 facing the gas inlet 111 of the gas-distributing plate 100 is inclined, so that the gas passing through the gas-equalizing sheet 300 can be guided by the gas-equalizing sheet, and part of the gas can be discharged from the first fire holes 221 after passing through the gas-equalizing sheet 300 more easily.

Referring to fig. 4 and 10, in order to enable the gas equalization plate 300 to be installed in the first combustion air duct 150, the gas separation disc 100 may be provided with a fixing groove 112, and a portion of the gas equalization plate 300 may be inserted into the fixing groove 112 of the gas separation disc 100, specifically, the gas equalization plate 300 includes a gas equalization portion 320 and an insertion portion 310, the insertion portion 310 is connected with the gas equalization portion 320 and is bent with respect to the gas equalization portion 320, the insertion portion 310 is inserted into the fixing groove 112 of the gas separation disc 100, the gas equalization portion 320 is opposite to the gas inlet 111 of the gas separation disc 100, and the gas equalization hole 321 is opened on the gas equalization portion 320.

In some embodiments, referring to fig. 1, 3 and 4, the combustion apparatus of the present utility model may further include a second flame cover 400, where the second flame cover 400 may cover the gas distribution plate 100, and the second flame cover 400 may enclose the gas distribution plate 100 to form a second combustion air passage 160, and correspondingly, the second flame cover 400 may define a second flame hole 410 communicating with the second combustion air passage 160, and the first combustion air passage 150 may enclose the second combustion air passage 160 therein, and the second combustion air passage 160 may be specifically disposed at a central position in the first combustion air passage 150, so that the combustion apparatus of the present utility model may form an outer ring flame and a central flame, and the flame distribution generated by the combustion apparatus may be more uniform, so that the cookware and cookware heated by the combustion apparatus may be heated more uniformly. The second fire cover 400 may be a circular structural member, and the gas distribution plate 100 may further include a third ring portion 140, where the third ring portion 140 is surrounded by the first ring portion 120, and the second fire cover 400 may surround at least a portion of the third ring portion 140 and cover the third ring portion 140, so that the second fire cover 400 may be fixed with the third ring portion 140. The second fire cover 400 and the third ring portion 140 can be further fixedly connected by the matching manner of the limiting groove and the limiting block, so that the second fire cover 400 and the third ring portion 140 also have reliable and stable connection effect.

The first fire cover 200 and the second fire cover 400 may be made of stainless steel, so that the first fire cover 200 and the second fire cover 400 have better high temperature resistance, the manufacturing cost of the first fire cover 200 and the second fire cover 400 can be reduced, and the gas distribution plate 100 may be made of aluminum alloy or copper, so that the gas distribution plate 100 has good heat conduction performance.

Example two

Based on the combustion device, the embodiment of the utility model also provides a gas stove, which comprises the combustion device.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

Claims (16)

1. A combustion apparatus, comprising:

a gas distribution plate (100);

the first fire cover (200) is covered on the gas distribution plate (100), a first combustion air passage (150) is formed by surrounding the first fire cover (200) and the gas distribution plate (100), and a first fire hole (221) is formed in the first fire cover (200); and

a heat sink (170) provided to the gas separation plate (100);

wherein the material thermal expansion coefficient of the first fire cover (200) is different from the material thermal expansion coefficient of the gas distribution plate (100).

2. The combustion device according to claim 1, wherein the material thermal expansion coefficient of the first fire cover (200) is smaller than the material thermal expansion coefficient of the gas distribution plate (100), and the material thermal conductivity coefficient of the gas distribution plate (100) is not smaller than the material thermal conductivity coefficient of the first fire cover (200).

3. The combustion device according to claim 1, characterized in that the heat sink (170) is arranged at a side of the gas distribution plate (100) facing away from the first fire cover (200).

4. A combustion device according to claim 3, wherein the heat dissipation members (170) are strip-shaped structural members, and the number of the heat dissipation members (170) is plural, the heat dissipation members (170) are arranged along the radial direction of the gas distribution plate (100), and the plurality of heat dissipation members (170) are distributed at intervals along the circumferential direction of the gas distribution plate (100).

5. The combustion device according to claim 4, wherein the heat sink (170) is integrally formed with the gas distribution plate (100).

6. A combustion device according to any one of claims 1-5, characterized in that the first combustion air duct (150) is annular.

7. The combustion device according to claim 6, wherein the gas distribution plate (100) comprises a chassis (110), a first ring portion (120) and a second ring portion (130), the first ring portion (120) and the second ring portion (130) are both disposed on the chassis (110), the second ring portion (130) is disposed around the first ring portion (120) at intervals, the first fire cover (200) wraps at least part of the first ring portion (120) and the second ring portion (130) therein, the first combustion air channel (150) is disposed between the first ring portion (120) and the second ring portion (130), and the first fire holes (221) are opened on the side wall of the first fire cover (200) and distributed along the circumferential direction of the first fire cover (200).

8. The combustion device according to claim 7, wherein the outer edge of the chassis (110) is provided with a supporting surface (113), the supporting surface (113) is supported by the first fire cover (200), a positioning groove (131) is formed in the outer side wall of the first ring portion (120), a positioning block (222) matched with the positioning groove (131) is formed in the first fire cover (200), and the positioning block (222) is embedded in the positioning groove (131).

9. The combustion device according to claim 7 or 8, further comprising a gas equalizing plate (300), wherein the gas distribution plate (100) is provided with a gas inlet (111), the gas inlet (111) is communicated with the first combustion air passage (150), the gas equalizing plate (300) is opposite to the gas inlet (111), and the gas equalizing plate (300) is spaced from both the gas inlet (111) and the first fire hole (221).

10. The combustion device according to claim 9, wherein the air-homogenizing plate (300) is provided with air-homogenizing holes (321) penetrating the air-homogenizing plate (300), and the air-homogenizing holes (321) are opposite to the air inlet (111).

11. The combustion device according to claim 10, characterized in that the ratio of the inner diameter of the first fire hole (221) to the inner diameter of the gas equalizing hole (321) is 1.5 to 2 to 1.5 to 3.

12. The combustion device according to claim 10 or 11, wherein one end of the air equalizing piece (300) is connected to one side inner wall of the first combustion air passage (150), the other end of the air equalizing piece (300) has a gap with the other side inner wall of the first combustion air passage (150), and the air equalizing piece (300) is inclined toward the first fire hole (221).

13. The combustion device according to claim 12, wherein a fixing groove (180) is formed in the gas distribution plate (100), and at least part of the gas equalization plate (300) is inserted into the fixing groove (180).

14. The combustion device according to any one of claims 1-5, further comprising a second fire cover (400), wherein the second fire cover (400) is covered on the gas distribution plate (100), the second fire cover (400) and the gas distribution plate (100) enclose to form a second combustion air passage (160), the second fire cover (400) is provided with a second fire hole (410), and the first fire cover (200) is enclosed on the second fire cover (400).

15. The combustion device according to claim 14, wherein the first fire cover (200) and the second fire cover (400) are made of stainless steel, and the gas distribution plate (100) is made of aluminum alloy.

16. A gas range comprising a combustion apparatus as claimed in any one of claims 1 to 15.