CN215062037U - Cover body assembly, combustor and stove - Google Patents

Abstract

The utility model provides a lid subassembly, combustor and cooking utensils. Wherein, lid subassembly includes: a body; the at least two combustion holes are arranged on the body at intervals along the circumferential direction of the body and penetrate through the body; the depressed part sets up in the body, and is located between two adjacent burner ports. Make from the distance grow between burner port spun flame and the body wall through setting up the depressed part, effectively avoid the direct contact of flame and wall, reduce the temperature of body wall, prevent that the high temperature wall from heating the inside gas of fire lid. And because the depressed part is sunken towards the cavity direction for the cavity volume diminishes, thereby reduces the accommodation space of gas, when adjusting flame size, is favorable to discharging the interior residual gas of cavity, and then effectively reduces the possibility that produces the backfire and explodes the phenomenon.

Description

Cover body assembly, combustor and stove

Technical Field

The utility model belongs to the technical field of kitchen appliance, particularly, relate to a lid subassembly, combustor and cooking utensils.

Background

At present, most combustors are for reduce cost, adopt thin wall fire lid more, but this kind of fire lid only has a gas entry usually, because the inside gas pressure distribution of fire lid is inhomogeneous, entrance pressure is big, regional pressure far away from the entrance is little, make the flame that comes out from the fire hole also inhomogeneous, the flame far away from the gas entry is very short, and short flame is very easy direct attach heats the wall on the fire lid wall, thereby make the temperature of wall very high, when big fire changes little fire, thereby the high temperature wall can heat the inside gas of fire lid and make the gas take place to burn and produce the tempering and explode the phenomenon, this brings very poor culinary art experience for the consumer.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

Therefore, the utility model discloses a first aspect provides a lid subassembly.

The second aspect of the present invention also provides a burner.

The third aspect of the utility model also provides a cooking utensil.

In view of this, the first aspect of the present invention provides a cover assembly, including: a body; the at least two combustion holes are arranged on the body at intervals along the circumferential direction of the body and penetrate through the body; the depressed part sets up in the body, and is located between two adjacent burner ports.

The utility model provides a lid subassembly, including body, two at least burner ports and two at least depressed parts. Wherein, the body has the cavity, and when the lid subassembly cooperated with the furnace end of combustor, the cavity communicated with the gas groove of furnace end, formed the accommodation space of gas. The burner port runs through the body setting, also is burner port and cavity intercommunication, and a plurality of burner ports set up in the body along the circumference interval of body to guarantee the circumference evenly distributed of gas along the body, and then promote flame evenly distributed on the body. When the cover body assembly is matched with the burner head of the burner, the gas in the gas groove is sprayed out through the combustion holes and is ignited to form flame. The depressed part sets up on the body, and is sunken towards the cavity direction, and the depressed part is located between two adjacent burner ports, also on the burner port is located the arch that forms between two adjacent depressed parts for from the distance grow between burner port spun flame and the body wall, effectively avoid the direct contact of flame and wall, reduce the temperature of body wall, prevent that the high temperature wall from heating the inside gas of fire lid. And because the depressed part is sunken towards the cavity direction for the cavity volume diminishes, thereby reduces the accommodation space of gas, when adjusting flame size, is favorable to discharging the interior residual gas of cavity, and then effectively reduces the possibility that produces the backfire and explodes the phenomenon. In addition, when the burner is used for cooking, objects falling onto the cover body assembly can be collected through the concave part, flame is prevented from directly burning the objects, stains generated after the objects are burnt at high temperature are reduced, and the cleaning of the cover body assembly is facilitated.

According to the utility model provides an foretell lid subassembly can also have following additional technical characterstic:

in any of the above technical solutions, further, the body includes: the first wall surface surrounds the central hole; the second wall surface is connected with the first wall surface, an included angle is formed between the second wall surface and the first wall surface, and the combustion holes and the concave parts are arranged on the second wall surface; and the third wall surface is connected with one side of the second wall surface, which is far away from the central hole, and an included angle is formed between the second wall surface and the third wall surface.

In this technical solution, the body includes a first wall surface, a second wall surface, and a third wall surface. Wherein, the first wall encloses a centre bore, and the centre bore is used for setting up other subassembly or be used for the cover to establish on the furnace head of going out a fire. The second wall is connected with the first wall, has the contained angle between first wall and the second wall, and the third wall is connected with one side that the centre bore was kept away from to the second wall, and has the contained angle between second wall and the third wall, also means that the second wall is connected between first wall and the third wall, forms out the cavity through first wall, second wall and third wall. The burner port and the depressed part are both arranged on the second wall surface, namely in the direction of the axis of the central hole, and the burner port and the depressed part are far away from the gas groove of the burner. Thereby increase the distance between flame and the body wall through the depressed part, effectively avoid the direct contact of flame and wall, reduce the temperature of body wall, prevent that the high temperature wall from heating the inside gas of fire lid. And because the depressed part is sunken towards the cavity direction for the cavity volume diminishes, thereby reduces the accommodation space of gas, when adjusting flame size, is favorable to discharging the interior residual gas of cavity, and then effectively reduces the possibility that produces the backfire and explodes the phenomenon.

Further, the combustion hole extends from the contour line of the second wall surface on the side close to the first wall surface (inner peripheral edge of the second wall surface) to the contour line of the second wall surface on the side close to the third wall surface (outer peripheral edge of the second wall surface), that is, the combustion hole extends substantially in the radial direction of the second wall surface, so that the length of the combustion hole is large, the flow resistance of the gas in the combustor is reduced, the ejection of the gas from the combustion hole in the second wall surface is promoted, and the stability and the strength of the flame can be improved.

It will be appreciated that in order to make the flame more concentrated, the side of the second wall surface adjacent to the first wall surface is lower than the side of the second wall surface adjacent to the third wall surface in the direction of the axis of the central bore, i.e. the second wall surface is of an inverted conical shape.

In any one of the above technical solutions, further, along the circumferential direction of the body, a minimum distance from any point on a contour line of an opening end of the recess portion to a contour line of an outlet of the combustion hole is greater than or equal to 0mm and less than or equal to 2 mm.

In the technical scheme, the range of the minimum distance from any point on the contour line of the opening end of the concave part to the contour line of the outlet of the combustion hole is 0-2 mm. Specifically, when the minimum distance from any point on the contour line of the opening end of the recessed portion to the contour line of the outlet of the combustion hole is 0mm, the opening end of the recessed portion and the contour line of the outlet of the adjacent combustion hole are partially overlapped, the included angle between the flame spraying direction and the second wall surface is increased, direct contact between flame and the second wall surface is avoided, and therefore backfire detonation is prevented. When the minimum distance of any point to the contour line of the export of burner port on the contour line of the open end of depressed part is greater than 0mm and less than or equal to 2mm, first platform has between the open end of depressed part and the export of adjacent burner port, on the one hand, when guaranteeing the contact distance of flame and second wall, reduce the depressed part stamping forming degree of difficulty, the production of being convenient for, on the other hand, this first platform is outstanding for the burner port, be favorable to changing out the direction of fire and form the rotary fire, make heating area bigger, the rate of heating is faster, simultaneously can be energy-conserving gas-saving.

Specifically, the contour line of the open end of the recess extending in the radial direction of the second wall surface is arranged in parallel with the contour line of the outlet of the adjacent combustion hole. Therefore, a regular first platform is formed, the manufacturing is convenient, and the phenomenon that flame is attached to the wall surface to heat the wall surface due to overlarge distance between the concave part and the combustion hole can be avoided.

In any of the above technical solutions, further, along a direction perpendicular to the axis of the central hole, a minimum distance from any point on the contour line of the open end of the recessed portion to a connecting line of the first wall surface and the second wall surface, and/or a minimum distance from any point on the contour line of the open end of the recessed portion to a connecting line of the second wall surface and the third wall surface is greater than or equal to 0mm and less than or equal to 3 mm.

In this technical solution, in a direction perpendicular to the axis of the center hole, that is, in the height direction of the burner, the minimum distance from any point on the contour line of the open end of the recessed portion to the connecting line (the inner circumferential edge of the second wall surface) of the first wall surface and the second wall surface is in the range of 0mm to 3 mm. Specifically, when the minimum distance from any point on the contour line of the open end of the depressed part to the connecting line of the first wall surface and the second wall surface is 0mm, the contour line of the open end of the depressed part close to the first wall surface coincides with the contour line of the second wall surface close to the first wall surface, namely the depressed part radially extends to the first wall surface at the center hole, so that the flame sprayed from the combustion hole can be located in the range of the open end of the depressed part as much as possible, thereby effectively avoiding the direct contact of the flame and the second wall surface and preventing the backfire and detonation phenomenon caused by the overhigh temperature of the second wall surface. When the minimum distance from any point on the contour line of the opening end of the depressed part to the connecting line of the first wall surface and the second wall surface is greater than 0mm and less than or equal to 3mm, a second platform exists between the contour line of the opening end of the depressed part and the side, close to the first wall surface, of the second wall surface, the strength of the cover body assembly is reduced due to the fact that the thickness of the first wall surface is too small, the stamping forming difficulty of the depressed part can be reduced, and production is facilitated. Similarly, the minimum distance from any point on the outline of the open end of the recess to the connecting line between the second wall surface and the third wall surface (the outer peripheral edge of the second wall surface) may be set to 0mm to 3 mm.

Specifically, a contour line of the open end of the recessed portion extending in the circumferential direction of the second wall surface is arranged in parallel with the inner or outer circumferential edge of the second wall surface. Thus forming a regular second platform for ease of manufacture.

In any of the above embodiments, further, in a direction perpendicular to the axis of the central hole, a minimum distance from any point on the contour line of the outlet of the combustion hole to a connecting line of the first wall surface and the second wall surface, and/or a minimum distance from any point on the contour line of the outlet of the combustion hole to a connecting line of the second wall surface and the third wall surface is greater than or equal to 1mm and less than or equal to 20 mm.

In this technical scheme, along the direction of perpendicular to centre bore axis, also be the direction of height of combustor, the scope of the minimum distance of any point to the connecting wire of first wall and second wall (the interior week of second wall along) on the contour line of the export of burner port is 1mm ~ 20mm, there is 1mm ~ 20 mm's distance between the contour line that the export of also burner port and second wall are close to first wall one side, thereby it prevents that the burner port from extending to first wall to put, and then can be as much as possible upwards produce flame along the combustor direction of height, the outer flame that is favorable to flame contacts the pan, make the evenly distributed of gas and flame, promote the gas fully burns. Similarly, the minimum distance from any point on the outline of the outlet of the combustion hole to the connecting line between the second wall surface and the third wall surface (the outer peripheral edge of the second wall surface) may be set to 1mm to 20 mm.

In any of the above technical solutions, further, the cover assembly further includes: the through hole penetrates through the body and is arranged on the second wall surface.

In the technical scheme, at least one through hole is formed in the second wall surface, and the through hole penetrates through the body and is communicated with the cavity. The through hole can be used as a combustion hole during combustion of gas, so that the gas is sprayed out through the through hole and is ignited to form flame, and the heating area of the combustor is increased. When big fire changes little fire, this through-hole can also act as the gas discharge hole to discharge and transfer unnecessary gas in the cavity behind the little flame, solve the tempering detonation problem.

It will be appreciated that the through-hole may also be provided in the first wall and/or the third wall.

In any of the above technical solutions, further, the through hole is circular; the aperture of the through hole is greater than or equal to 1mm and less than or equal to 2 mm.

In the technical scheme, the through hole is circular, and the diameter of the through hole is 1-2 mm. Thereby further increase the heating area of combustor, be favorable to the pan to be heated evenly, when big fire changes little fire simultaneously, guarantee to transfer to reduce unnecessary gas in the flame back cavity can discharge outside the cavity fast, improve the stability of the interior gas of combustor, prevent the backfire and explode.

Further, under the condition that the through hole is arranged on the second wall surface, the minimum distance between the center point of the through hole and the contour line of the outlet of the combustion hole is larger than or equal to 1mm and smaller than or equal to 3mm, so that the combustion hole is not communicated with the through hole, and the mutual influence of flames from the combustion hole and the through hole is avoided.

In any of the above solutions, further, the shape of the outlet of the combustion hole includes at least one of: circular, oval, polygonal.

In this embodiment, the outlet of the combustion hole may have a circular, elliptical, or polygonal shape. The polygonal shape includes, but is not limited to, a square, a rectangle, a trapezoid, a triangle, etc., that is, the outlet shape of the combustion hole is not fixed, and may be any shape, and the outlet shape of the combustion hole may be adjusted according to the type of the cover assembly. Thereby can satisfy different demands of being on fire, enlarge the range of application of lid subassembly.

In any one of the above technical solutions, further, the combustion holes are arranged in a manner of being offset along the circumferential direction of the body.

In this technical scheme, the circumference skew setting of body is followed to the burner port, the circumference skew of body is followed for the one end (the inner) that is close to first wall of the one end (the outer end) that is close to of the third wall that also is the burner port, make the burner port for the radial slope of body, the centre line at burner port place this moment does not pass the centre of a circle of centre bore, thereby promote the downthehole effluvium of burner port on the gas follow body, be favorable to forming the vortex fire, and then on the basis of promoting flame stability and intensity, increase heating area and rate of heating, satisfy user's heating demand, energy-conserving gas-saving.

In any of the above technical solutions, further, in the axial direction of the central hole, the depth of the recessed portion is greater than or equal to 0.5mm and less than or equal to 1.5 mm.

In this technical solution, the depth of the recess portion ranges from 0.5mm to 1.5mm in the axial direction of the center hole. Thereby under the condition that has the uniform spacing between the wall of guaranteeing flame and body, avoid the too big gas mobility that leads to of the degree of depth of depressed part to reduce the problem, guarantee moreover that the holistic thickness of lid subassembly can not be too big, satisfy the size demand of different model combustors.

In any one of the above aspects, further, the recessed portion gradually increases in a direction from the first wall surface to the third wall surface in a cross section perpendicular to the axial direction of the center hole.

In this technical scheme, in the radial direction of centre bore, the distance between the one end that is close to the first wall of adjacent depressed part is less than the distance between the one end that is close to the third wall of adjacent depressed part, and the depressed part is the radial setting from the one end that is close to the first wall to the one end that is close to the third wall that is also. Make the depressed part can press close to the burner port as far as possible for from the burner port spun flame and the body wall between the distance grow, effectively avoid the direct contact of flame and wall, reduce the temperature of body wall, prevent that the high temperature wall from heating the inside gas of fire lid.

According to the utility model discloses a second aspect still provides a combustor, include: the burner is provided with a gas groove; the cover body assembly is arranged on the gas tank in a covering mode. Therefore, the gas water heater has all the beneficial effects of the cover body assembly provided by the first aspect, and is not repeated for avoiding repetition.

Further, the second wall of lid subassembly is located the one side that the lid subassembly kept away from the gas groove to make the cavity and the gas groove intercommunication of lid subassembly, in order to hold the required gas of burning.

Further, the burner includes: combustion portion, distributor and gas pipe. Wherein, the burning part is internally limited with an annular gas groove which is opened upwards. The first gas conduit is connected with the combustion part, and the gas conduit is communicated with the gas groove. Distributor and lid subassembly are the loop configuration, and the direction of height along the combustor distributor is established in the top of the burning portion of furnace end, and lid subassembly cover is established in distributor top. The fire distribution cavity communicated with the gas groove is limited in the fire distributor, the upper surface of the fire distributor is provided with a plurality of gas outlets communicated with the fire distribution cavity, and the plurality of combustion holes are communicated with the plurality of gas outlets in a one-to-one correspondence mode. The gas enters the gas groove through the gas guide pipe, enters the combustion holes through the fire distribution cavity and the gas outlet, and finally is ejected through the combustion holes to form flame. In addition, distributor and lid subassembly cooperation can distribute each combustion hole with the gas uniformly, are favorable to promoting flame's stability and homogeneity.

Further, the combustor still includes: the igniter is arranged on the furnace head. By arranging the igniter on the burner, convenience can be provided for the ignition of the burner.

It will be appreciated that an igniter receiving slot may be provided in the cover assembly, the igniter being adapted to be received in the igniter receiving slot.

According to the third aspect of the utility model, still provide a cooking utensils, including the combustor that the second aspect provided. Therefore, the burner has all the beneficial technical effects of the burner, and the details are not repeated.

Specifically, the cooking utensil further comprises a cover plate, the cover plate covers the burner, and the cover plate is used for supporting a pot so as to cook food materials.

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

Drawings

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

fig. 1 shows a perspective view of a cover assembly in an embodiment of the invention;

fig. 2 shows a top view of a cover assembly in an embodiment of the invention;

FIG. 3 shows an enlarged view of area B of FIG. 2;

fig. 4 shows a cross-sectional view in the direction a-a of fig. 2.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:

100 cover assembly, 110 body, 112 first wall, 114 second wall, 116 third wall, 120 combustion holes, 122 slope, 130 depression, 140 through hole, 150 center hole, 1142 inner perimeter, 1144 outer perimeter.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A lid assembly, a burner and a range according to some embodiments of the present invention are described below with reference to fig. 1 to 4.

The first embodiment is as follows:

as shown in fig. 1 and 2, a first aspect of an embodiment of the present invention provides a cover assembly 100, including: a body 110, a combustion hole 120, and a recess 130.

In detail, the number of the combustion holes 120 and the depressions 130 is at least two. At least two combustion holes 120 are provided in the body 110 at intervals along the circumferential direction of the body 110, and the combustion holes 120 penetrate the body 110. The concave portions 130 are disposed on the body 110, and each concave portion 130 is located between two adjacent combustion holes 120.

In this embodiment, the cover assembly 100 includes a body 110, at least two combustion ports 120, and at least two recesses 130. Wherein, the body 110 has a cavity, and when the cover assembly 100 is matched with the burner of the burner, the cavity is communicated with the gas groove of the burner to form a gas containing space. The combustion holes 120 penetrate through the body 110, that is, the combustion holes 120 are communicated with the cavity, and the plurality of combustion holes 120 are arranged on the body 110 at intervals along the circumferential direction of the body 110, so as to ensure that the gas is uniformly distributed along the circumferential direction of the body 110, and further promote the flame to be uniformly distributed on the body 110. When the cover assembly 100 is coupled with the burner head of the burner, the gas in the gas groove is sprayed through the combustion holes 120 and ignited to form a flame. The concave part 130 is arranged on the body 110 and is concave towards the cavity direction, the concave part 130 is positioned between two adjacent combustion holes 120, namely the combustion holes 120 are positioned on the bulge formed between two adjacent concave parts 130, so that the distance between the flame sprayed out from the combustion holes 120 and the wall surface of the body 110 is increased, the direct contact between the flame and the wall surface is effectively avoided, the temperature of the wall surface of the body 110 is reduced, and the gas inside the fire cover is prevented from being heated by the high-temperature wall surface. And because the depressed part 130 is sunken towards the cavity direction for the cavity volume diminishes, thereby reduces the accommodation space of gas, when adjusting flame size, is favorable to discharging the remaining gas in the cavity, and then effectively reduces the possibility that produces the backfire and explode phenomenon. In addition, when the burner is used for cooking, the object falling on the cover body assembly 100 can be collected through the concave part 130, and the object is prevented from being directly burnt by flame, so that stains generated after the object is burnt at high temperature are reduced, and the cleaning of the cover body assembly 100 is facilitated.

Specifically, as shown in fig. 4, the inclined portion 122 is disposed in the combustion hole 120, and the flowing direction of the gas can be changed by the inclined portion 122 to change the fire outlet direction of the flame, so as to form a swirling fire, increase the heating area and the heating speed, meet the heating requirement of the user, and save energy and gas.

It is understood that the shape of the outlet of the combustion hole 120 includes at least one of: circular, oval, polygonal. Here, the polygonal shape includes, but is not limited to, a square, a rectangle, a trapezoid, a triangle, etc., that is, the outlet shape of the combustion hole 120 is not fixed, and may be any shape, and the outlet shape of the combustion hole 120 may be adjusted according to the type of the cover assembly 100. Thereby satisfying different fire requirements and expanding the application range of the cover assembly 100. For example, in the direct fire burner, the outlet of the combustion hole 120 may have a circular, elliptical, or the like shape, and in the rotary fire burner, the outlet of the combustion hole 120 may have a rectangular, trapezoidal, arc, or the like shape. Likewise, the shape of the open end of the recess 130 may also include at least one of: circular, oval, polygonal.

Example two:

as shown in fig. 1 and 2, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the body 110 includes a first wall 112, a second wall 114, and a third wall 116.

In detail, the first wall 112 encloses a central aperture 150. The second wall surface 114 is connected to the first wall surface 112, the second wall surface 114 forms an angle with the first wall surface 112, and the combustion hole 120 and the recess 130 are provided in the second wall surface 114. The third wall 116 is connected to the second wall 114 on a side away from the central aperture 150, and the second wall 114 and the third wall 116 form an included angle therebetween.

In this embodiment, the first wall 112 encloses a central opening 150, and the central opening 150 is used for installing other fire components or for fitting over a furnace head. The second wall 114 is connected to the first wall 112, an included angle is formed between the first wall 112 and the second wall 114, the third wall 116 is connected to a side of the second wall 114 away from the central hole 150, and an included angle is formed between the second wall 114 and the third wall 116, that is, the second wall 114 is connected between the first wall 112 and the third wall 116, and a cavity is formed by the first wall 112, the second wall 114 and the third wall 116. The combustion hole 120 and the recess 130 are both disposed on the second wall surface 114, that is, in the axial direction of the central hole 150, the combustion hole 120 and the recess 130 are disposed away from the gas groove of the burner. Therefore, the distance between the flame and the wall surface of the body 110 is increased through the concave part 130, the direct contact between the flame and the wall surface is effectively avoided, the temperature of the wall surface of the body 110 is reduced, and the gas inside the fire cover is prevented from being heated by the high-temperature wall surface. And because the depressed part 130 is sunken towards the cavity direction for the cavity volume diminishes, thereby reduces the accommodation space of gas, when adjusting flame size, is favorable to discharging the remaining gas in the cavity, and then effectively reduces the possibility that produces the backfire and explode phenomenon.

Further, the combustion holes 120 extend from the contour line of the second wall surface 114 on the side close to the first wall surface 112 (the inner peripheral edge 1142 of the second wall surface 114) to the contour line of the second wall surface 114 on the side close to the third wall surface 116 (the outer peripheral edge 1144 of the second wall surface 114), that is, the combustion holes 120 extend substantially in the radial direction of the second wall surface 114, so that the combustion holes 120 are long, thereby reducing the flow resistance of the gas in the burner, promoting the gas to be ejected from the combustion holes 120 in the second wall surface 114, and improving the stability and strength of the flame.

Specifically, the recess 130 on the second wall surface 114 is formed by die stamping.

It will be appreciated that, as shown in fig. 4, in order to make the flame more concentrated, the side of the second wall surface 114 adjacent to the first wall surface 112 is lower than the side of the second wall surface 114 adjacent to the third wall surface 116 in the axial direction of the central hole 150, i.e. the second wall surface 114 has an inverted conical shape, and the cone angle α 1 may be 90 ° to 130 °, such as 95 °, 100 °, 120 °.

Example three:

as shown in fig. 2 and 3, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the minimum distance H1 from any point on the outline of the open end of the recess 130 to the outline of the outlet of the combustion hole 120 in the circumferential direction of the body 110 is greater than or equal to 0mm and less than or equal to 2 mm.

In this embodiment, the minimum distance H1 from any point on the outline of the open end of the recess 130 to the outline of the outlet of the combustion hole 120 ranges from 0mm to 2 mm. Specifically, when the minimum distance H1 between any point on the outline of the open end of the recess 130 and the outline of the outlet of the combustion hole 120 is 0mm, the open end of the recess 130 partially overlaps the outline of the outlet of the adjacent combustion hole 120, and the included angle between the flame ejection direction and the second wall surface 114 is increased, which is advantageous for preventing the flame from directly contacting the second wall surface 114, thereby preventing backfire. When the minimum distance H1 from any point on the contour line of the opening end of the recessed part 130 to the contour line of the outlet of the combustion hole 120 is greater than 0mm and less than or equal to 2mm, a first platform is arranged between the opening end of the recessed part 130 and the outlet of the adjacent combustion hole 120, on one hand, the contact distance between flame and the second wall surface 114 is ensured, the stamping forming difficulty of the recessed part 130 is reduced, the production is convenient, on the other hand, the first platform is protruded relative to the combustion hole 120, the fire direction is favorably changed to form the rotary fire, the heating area is larger, the heating speed is faster, energy and gas can be saved simultaneously.

Specifically, the contour line of the open end of the recess 130 extending in the radial direction of the second wall surface 114 is arranged in parallel with the contour line of the outlet of the adjacent combustion hole 120. Thus, a regular first plateau is formed, which is easy to manufacture, and which can prevent the flame from attaching to the wall surface and heating the wall surface due to the excessively large gap between the recess 130 and the combustion hole 120.

Example four:

as shown in fig. 2 and 3, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the minimum distance H2 from any point on the outline of the open end of the recess 130 to the connecting line of the first wall surface 112 and the second wall surface 114 in the direction perpendicular to the axis of the center hole 150 is greater than or equal to 0mm and less than or equal to 3 mm. And/or a minimum distance H3 from any point on the outline of the open end of recess 130 to a line connecting second wall 114 and third wall 116, in a direction perpendicular to the axis of central bore 150, is greater than or equal to 0mm and less than or equal to 3 mm.

In this embodiment, the minimum distance H2 from any point on the contour line of the open end of the recess 130 to the connecting line of the first wall surface 112 and the second wall surface 114 (the inner peripheral edge 1142 of the second wall surface 114) in the direction perpendicular to the axis of the center hole 150, that is, in the height direction of the burner, is in the range of 0mm to 3mm, for example, 0.5mm, 1mm, 2mm, 2.5 mm. Specifically, when the minimum distance H2 between any point on the contour line of the open end of the recess 130 and the connecting line of the first wall surface 112 and the second wall surface 114 is 0mm, the contour line of the open end of the recess 130 close to the first wall surface 112 coincides with the contour line of the second wall surface 114 close to the first wall surface 112, that is, the recess 130 extends to the first wall surface 112 in the radial direction of the central hole 150, so that the flame emitted from the combustion hole 120 can be located in the range of the open end of the recess 130 as much as possible, thereby effectively avoiding the direct contact between the flame and the second wall surface 114 and preventing the backfire and detonation phenomenon caused by the over-high temperature of the second wall surface 114. When the minimum distance H2 from any point on the contour line of the opening end of the recess 130 to the connecting line of the first wall surface 112 and the second wall surface 114 is greater than 0mm and less than or equal to 3mm, a second platform exists between the opening end of the recess 130 and the contour line of the second wall surface 114 on the side close to the first wall surface 112, which not only prevents the strength of the cover assembly 100 from being reduced due to the over-small thickness of the first wall surface 112, but also reduces the difficulty in stamping forming the recess 130, and facilitates production. Similarly, the minimum distance H3 from any point on the contour of the open end of the recess 130 to the connecting line between the second wall surface 114 and the third wall surface 116 (the outer peripheral edge 1144 of the second wall surface 114) may be set to 0mm to 3 mm.

Specifically, the contour line of the open end of the recess 130 extending in the circumferential direction of the second wall surface 114 is disposed in parallel with the inner peripheral edge 1142 or the outer peripheral edge 1144 of the second wall surface 114. Thus forming a regular second platform for ease of manufacture.

Example five:

as shown in fig. 2 and 3, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the minimum distance H4 from any point on the contour of the outlet of the combustion hole 120 to the line joining the first wall 112 and the second wall 114 in a direction perpendicular to the axis of the central bore 150 is greater than or equal to 1mm and less than or equal to 20 mm. And/or the minimum distance H5 from any point on the contour of the outlet of the combustion hole 120 to the line joining the second wall 114 and the third wall 116, in a direction perpendicular to the axis of the central bore 150, is greater than or equal to 1mm and less than or equal to 20 mm.

In this embodiment, along a direction perpendicular to the axis of the central hole 150, i.e., the height direction of the burner, the minimum distance H4 from any point on the contour line of the outlet of the combustion hole 120 to the connecting line between the first wall surface 112 and the second wall surface 114 (the inner circumferential edge 1142 of the second wall surface 114) is in the range of 1mm to 20mm, e.g., 1.5mm, 3mm, 7mm, 10mm, 15mm, and 18mm, i.e., there is a distance of 1mm to 20mm between the outlet of the combustion hole 120 and the contour line of the second wall surface 114 on the side close to the first wall surface 112, so as to prevent the combustion hole 120 from extending to the first wall surface 112, and further to generate flames as much as possible upwards along the height direction of the burner, which is beneficial for the outer flame to contact the pot, so that the gas and flames are uniformly distributed, and the gas is sufficiently combusted. Similarly, the minimum distance H5 from any point on the contour of the outlet of the combustion hole 120 to the connecting line between the second wall surface 114 and the third wall surface 116 (the outer peripheral edge 1144 of the second wall surface 114) may be set to 1mm to 20 mm.

Example six:

as shown in fig. 1 and 2, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the cover assembly 100 further includes: a through hole 140. The through hole 140 penetrates through the body 110 and is disposed on the second wall 114.

In this embodiment, at least one through hole 140 is disposed on the second wall 114, and the through hole 140 penetrates the body 110 to communicate with the cavity. The through holes 140 can be used as the combustion holes 120 when the gas is combusted, so that the gas is sprayed out through the through holes 140 and is ignited to form flame, and the heating area of the combustor is increased. When the big fire is changed into the small fire, the through hole 140 can also be used as a gas exhaust hole to exhaust the redundant gas in the cavity after the small fire is adjusted, so that the problem of backfire and detonation is solved.

Specifically, during the preparation of the cover assembly 100, the through-holes 140 may be drilled with an over-drill.

It is understood that the through-hole 140 may be formed in the first wall 112 and/or the third wall 116.

As shown in FIGS. 1 and 2, the through holes 140 are formed through the second wall surface 114 between the combustion holes 120 and the contour of the second wall surface 114 on the side closer to the first wall surface 112, and between two adjacent combustion holes 120. The plurality of through holes 140 are uniformly distributed along the circumferential direction of the second wall surface 114.

Further, the through-hole 140 is circular. The aperture of the through hole 140 is greater than or equal to 1mm and less than or equal to 2mm, that is, the diameter of the through hole 140 is 1mm to 2mm, for example, 1.2mm, 1.5mm, 1.8 mm. Thereby further increase the heating area of combustor, be favorable to the pan to be heated evenly, when big fire changes little fire simultaneously, guarantee to transfer to reduce unnecessary gas in the flame back cavity can discharge outside the cavity fast, improve the stability of the interior gas of combustor, prevent the backfire and explode.

Specifically, in the case where the through hole 140 is provided in the second wall surface 114, the minimum distance between the center point of the through hole 140 and the contour line of the outlet of the combustion hole 120 is greater than or equal to 1mm and less than or equal to 3mm, so that the combustion hole 120 is not communicated with the through hole 140, and the flames from the combustion hole 120 and the through hole 140 are prevented from affecting each other.

Example seven:

as shown in fig. 1 and 2, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the combustion holes 120 are disposed offset in the circumferential direction of the body 110.

In this embodiment, the combustion holes 120 are disposed along the circumferential direction of the body 110 in an offset manner, that is, one end (outer end) of the combustion hole 120 close to the third wall surface 116 is offset along the circumferential direction of the body 110 relative to one end (inner end) of the combustion hole 120 close to the first wall surface 112, so that the combustion hole 120 is inclined relative to the radial direction of the body 110, and at this time, the center line of the combustion hole 120 does not pass through the center of the central hole 150, thereby promoting the gas to be ejected from the combustion hole 120 on the body 110, facilitating the formation of the swirling fire, and further increasing the heating area and the heating speed on the basis of improving the stability and strength of the flame, so as to meet the heating requirements of users, save energy and save gas.

Specifically, the outer ends of the combustion holes 120 may be disposed with clockwise offset with respect to the inner ends in the circumferential direction of the body 110, and the outer ends of the combustion holes 120 may also be disposed with counterclockwise offset with respect to the inner ends in the circumferential direction of the body 110.

Example eight:

as shown in fig. 1 and 4, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the depth of the recess 130 is greater than or equal to 0.5mm and less than or equal to 1.5mm in the axial direction of the center hole 150.

In this embodiment, the depth of the recess 130 in the axial direction of the center hole 150 ranges from 0.5mm to 1.5mm, for example, 0.8mm, 1mm, 1.2 mm. Therefore, under the condition that a certain distance exists between the flame and the wall surface of the body 110, the problem of reduction of gas fluidity caused by overlarge depth of the concave part 130 is avoided, the integral thickness of the cover body assembly 100 is ensured not to be overlarge, and the size requirements of burners of different models are met.

Example nine:

as shown in fig. 1, 2 and 3, according to an embodiment of the invention, including the features defined in any of the above embodiments, and further: the recess 130 is gradually increased in a direction from the first wall surface 112 to the third wall surface 116 in a cross section perpendicular to the axial direction of the center hole 150.

In this embodiment, in the radial direction of the central hole 150, the distance between the ends of the adjacent recesses 130 close to the first wall surface 112 is smaller than the distance between the ends of the adjacent recesses 130 close to the third wall surface 116, that is, the recesses 130 are radially arranged from the end close to the first wall surface 112 to the end close to the third wall surface 116. The concave part 130 can be close to the combustion hole 120 as much as possible, so that the distance between the flame sprayed from the combustion hole 120 and the wall surface of the body 110 is increased, the direct contact between the flame and the wall surface is effectively avoided, the temperature of the wall surface of the body 110 is reduced, and the gas inside the fire cover is prevented from being heated by the high-temperature wall surface.

Example ten:

as shown in fig. 1 to 4, according to an embodiment of the present invention, a cover assembly 100 is provided, which includes a body 110, a swirl hole (combustion hole 120), a groove (recess 130), and a small circular hole (through hole 140).

In this embodiment, a groove is added on the wall (the second wall 114) of the body 110, which is in direct contact with the flame, so that the direct contact between the flame and the wall can be effectively avoided, and the temperature of the wall can be reduced. The groove is arranged between the two fire swirling holes, the radial direction of the body 110 is that the contour lines of the left side and the right side of the groove are parallel to the contour line of the outlet of the adjacent fire swirling hole and are 1 mm-2 mm away from the contour line of the outlet, the contour lines of the upper side and the lower side of the groove are parallel to the contour lines (the inner circumference is along 1142 and the outer circumference is along 1144) of the adjacent second wall surface 114 and are 1 mm-3 mm away from the contour line of the second wall surface 114, and the depth of the groove is set to 0.5 mm-1.5 mm. In addition, a plurality of small round holes are additionally arranged on the second wall surface 114, and the small round holes not only can be used as fire holes of the cover body assembly 100, but also can be used as gas discharge holes to discharge residual gas in the cavity, so that the problem of backfire and detonation is solved. The small round hole is arranged in the area between the contour lines of the swirling fire hole and the second wall surface 114, the distance between the small round hole and the contour line of the swirling fire hole is 0.5 mm-2 mm, and the aperture size of the small round hole is 1 mm-2 mm.

Example eleven:

according to an embodiment of the second aspect of the present invention, there is provided a burner, including: the burner is provided with a gas groove; the embodiment of the first aspect proposes a cover assembly, which is covered on the gas tank. Therefore, the gas water heater has all the beneficial effects of the cover body assembly provided by the embodiment of the first aspect, and is not repeated for avoiding repetition.

In this embodiment, the second wall of the cover assembly is located on a side of the cover assembly remote from the gas tank, such that the cavity of the cover assembly is in communication with the gas tank to contain the gas required for combustion.

Further, the burner includes: combustion portion, distributor and gas pipe. Wherein, the burning part is internally limited with an annular gas groove which is opened upwards. The first gas conduit is connected with the combustion part, and the gas conduit is communicated with the gas groove. Distributor and lid subassembly are the loop configuration, and the direction of height along the combustor distributor is established in the top of the burning portion of furnace end, and lid subassembly cover is established in distributor top. The fire distribution cavity communicated with the gas groove is limited in the fire distributor, the upper surface of the fire distributor is provided with a plurality of gas outlets communicated with the fire distribution cavity, and the plurality of combustion holes are communicated with the plurality of gas outlets in a one-to-one correspondence mode. The gas enters the gas groove through the gas guide pipe, enters the combustion holes through the fire distribution cavity and the gas outlet, and finally is ejected through the combustion holes to form flame. In addition, distributor and lid subassembly cooperation can distribute each combustion hole with the gas uniformly, are favorable to promoting flame's stability and homogeneity.

Further, the combustor still includes: the igniter is arranged on the furnace head. By arranging the igniter on the burner, convenience can be provided for the ignition of the burner.

It will be appreciated that an igniter receiving slot may be provided in the cover assembly, the igniter being adapted to be received in the igniter receiving slot.

Example twelve:

an embodiment of the third aspect of the present invention provides a cooking appliance, which includes the burner provided in the embodiment of the second aspect. Therefore, the burner has all the beneficial technical effects of the burner, and the details are not repeated.

In this embodiment, the cooking appliance further comprises a cover plate covering the burner, the cover plate being used for supporting a pot so as to perform cooking operations of the food material.

It is to be understood that the invention is not limited to the particular arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions or change the order between the steps after comprehending the spirit of the present invention.

It should also be noted that the exemplary embodiments mentioned in the present disclosure describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in a different order from the embodiments, or may be performed simultaneously.

In the claims, the specification and the drawings attached to the specification, the term "plurality" means two or more, unless there is an additional definite limitation, the terms "upper", "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings only for the purpose of describing the present invention more conveniently and simplifying the description process, but not for the purpose of indicating or implying that the referred device or element must have the described specific orientation, be constructed and operated in the specific orientation, and thus the description should not be construed as limiting the present invention; the terms "connect," "mount," "secure," and the like are to be construed broadly, and for example, "connect" may refer to a fixed connection between multiple objects, a removable connection between multiple objects, or an integral connection; the multiple objects may be directly connected to each other or indirectly connected to each other through an intermediate. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the above data.

In the claims, the specification and drawings of the specification, the description of the term "one embodiment," "some embodiments," "specific embodiments," and the like, 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 invention. In the claims, the description and the drawings of the present application, schematic representations of the above terms do not necessarily refer 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.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A cover assembly, comprising:

a body;

the at least two combustion holes are arranged on the body at intervals along the circumferential direction of the body and penetrate through the body;

and the sunken part is arranged on the body and is positioned between the two adjacent combustion holes.

2. The cover assembly of claim 1, wherein the body comprises:

a first wall surface enclosing a central aperture;

the second wall surface is connected with the first wall surface, an included angle is formed between the second wall surface and the first wall surface, and the combustion hole and the concave part are arranged on the second wall surface;

and the third wall surface is connected with one side of the second wall surface far away from the central hole, and an included angle is formed between the second wall surface and the third wall surface.

3. The cover assembly of claim 2,

and along the circumferential direction of the body, the minimum distance from any point on the contour line of the opening end of the depressed part to the contour line of the outlet of the combustion hole is greater than or equal to 0mm and less than or equal to 2 mm.

4. The cover assembly of claim 2,

along the perpendicular to the direction of centre bore axis, any point on the contour line of the open end of depressed part extremely the first wall with the minimum distance of the connecting wire of second wall, and/or any point on the contour line of the open end of depressed part extremely the second wall with the minimum distance of the connecting wire of third wall, be more than or equal to 0mm and be less than or equal to 3 mm.

5. The cover assembly of claim 2, further comprising:

and the through hole penetrates through the body and is arranged on the second wall surface.

6. The cover assembly of claim 5,

the through hole is circular;

the aperture of the through hole is greater than or equal to 1mm and less than or equal to 2 mm.

7. The cover assembly according to any one of claims 1 to 6,

the shape of the outlet of the combustion hole comprises at least one of the following: circular, elliptical, polygonal; and/or

The combustion holes are arranged along the circumferential direction of the body in an offset manner.

8. The cover assembly of any one of claims 2 to 6,

the depth of the concave part is greater than or equal to 0.5mm and less than or equal to 1.5mm along the axial direction of the central hole.

9. A burner, comprising:

a burner having a gas groove;

a cover assembly as claimed in any one of claims 1 to 8, which covers the gas tank.

10. A hob, characterized in that it comprises:

a burner as claimed in claim 9.

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