CN215336306U

CN215336306U - Gas kitchen ranges

Info

Publication number: CN215336306U
Application number: CN202120624196.7U
Authority: CN
Inventors: 方松青; 苑善通; 张蒙恩; 王书春; 贺立军; 陈雄
Original assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-12-28
Anticipated expiration: 2031-03-26

Abstract

The application relates to the technical field of gas cookers and discloses a gas stove. The gas range includes: the outer fire cover component is provided with an outer fire hole and/or a flame stabilizing hole; the energy-gathering cover is sleeved on the outer side of the outer fire cap component; the bottom plate is positioned below the energy-gathering cover and defines a secondary air channel with the energy-gathering cover; the inner wall of the energy gathering cover and the outer side wall of the outer fire cover component form a guide flow channel in a surrounding mode, the outlet of the outer fire hole and/or the outlet of the flame stabilizing hole are communicated with the secondary air channel through the guide flow channel, and the guide flow channel inclines towards the outlet direction of the outer fire hole and/or the outlet direction of the flame stabilizing hole along the flowing direction of the secondary air in the guide flow channel. The guide flow channel guides the secondary air to the outlet of the outer fire hole and/or the flame stabilizing hole, namely to the root of the outer fire hole and/or the flame stabilizing hole, so that the combustion sufficiency of the flame at the outer fire hole and/or the flame stabilizing hole is improved, and the heat efficiency of the gas stove is improved.

Description

Gas kitchen ranges

Technical Field

The application relates to the technical field of gas cookers, in particular to a gas stove.

Background

The existing gas stove has the advantages that flame has a certain speed due to the injection effect of airflow, when the flame burns, after high-temperature flue gas with a certain speed is sprayed out from an outer flame hole and/or a flame stabilizing hole, surrounding hot air is gathered, so that secondary air cannot effectively reach the root of the flame, and the secondary air can ensure the sufficient combustion of the flame only when reaching the root of the flame, so that the secondary air cannot reach the root of the flame, the combustion sufficiency of the flame can be reduced, and the heat efficiency of the gas stove is reduced.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a gas stove, which aims to solve the problem of low heat efficiency of the gas stove caused by the fact that secondary air of the existing gas stove cannot reach the root of an outer fire hole and/or a flame stabilizing hole.

According to an aspect of an embodiment of the present invention, there is provided a gas range including: the outer fire cover component is provided with an outer fire hole and/or a flame stabilizing hole; the energy-gathering cover is sleeved on the outer side of the outer fire cap component; the bottom plate is positioned below the energy collecting cover and defines a secondary air channel with the energy collecting cover; the inner wall of the energy gathering cover and the outer side wall of the outer fire cover component form a guide flow channel in a surrounding mode, the outlet of the outer fire hole and/or the outlet of the flame stabilizing hole are communicated with the secondary air channel through the guide flow channel, and the guide flow channel inclines towards the outlet of the outer fire hole and/or the outlet of the flame stabilizing hole along the flowing direction of secondary air in the guide flow channel.

Optionally, the outer side wall of the outer fire cap assembly comprises: a first outer sidewall section; a second outer sidewall section located above the first outer sidewall section and below the outlet of the outer fire hole and/or the flame stabilizing hole; the inner wall of the energy gathering cover is opposite to the first outer side wall section, and the second outer side wall section inclines towards the outlet direction of the outer fire hole and/or the flame stabilizing hole along the flowing direction of secondary air in the guide flow channel.

Optionally, the second outer sidewall section has an outer diameter smaller than an outer diameter of the outer flame hole and/or the outer diameter of the flame stabilizing hole at the position of the outlet, and the second outer sidewall section is inclined upward in the inside-out direction.

Optionally, the inner wall of the energy concentrating shield is non-parallel to the second outer sidewall section; and/or non-parallel between the first and second outer sidewall sections.

Optionally, the inner wall and/or the first outer sidewall section of the concentrator shroud is/are inclined upwardly in an outside-in direction.

Optionally, the inner wall of the shaped shield is parallel to the first outer sidewall section or at an angle in the range of 2 ° -5 °.

Optionally, the outer sidewall of the outer fire cap assembly further comprises: and the third outer side wall section is positioned between the outlet of the outer fire hole and/or the flame stabilizing hole and the second outer side wall section, and a bevel angle is formed between the third outer side wall section and the second outer side wall section.

Optionally, the third outer sidewall section extends in an up-down direction.

Optionally, the top end of the inner wall of the energy collecting cover is located below the outlet of the outer fire hole and/or the flame stabilizing hole, and the height difference between the top end of the inner wall of the energy collecting cover and the outlet of the outer fire hole and/or the flame stabilizing hole is 2mm-8 mm.

Optionally, the gas range further comprises: the outer ring is connected to the outer side of the energy gathering cover, the outer ring is higher than the top end of the inner wall of the energy gathering cover, and the height difference between the outer ring and the top end of the inner wall of the energy gathering cover is 15-20 mm.

The gas stove provided by the embodiment of the disclosure can realize the following technical effects:

the secondary air flowing out of the secondary air channel flows to the outer fire holes and/or the flame stabilizing holes through the guide flow channel, the secondary air is supplemented to the outer fire holes and/or the flame stabilizing holes, and the combustion sufficiency of flames at the outer fire holes and/or the flame stabilizing holes is improved.

After flowing out from the secondary air channel, the secondary air flows through the guide flow channel, the guide flow channel inclines towards the outlet direction of the outer fire hole and/or the flame stabilizing hole, so that the secondary air in the guide flow channel flows towards the outlet direction of the outer fire hole and/or the flame stabilizing hole, the secondary air is guided to the outlet of the outer fire hole and/or the flame stabilizing hole, namely, the secondary air reaches the root part of the outer fire hole and/or the flame stabilizing hole, the combustion sufficiency of flame at the outer fire hole and/or the flame stabilizing hole is improved, and the heat efficiency of the gas stove is improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural view of a gas range provided in an embodiment of the present disclosure;

FIG. 2 is a schematic view of a combustor according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view taken along line C-C of FIG. 1;

fig. 4 is a schematic structural view of another gas range provided by the embodiment of the present disclosure;

FIG. 5 is a schematic sectional view taken along the direction G-G in FIG. 4;

FIG. 6 is an enlarged schematic view of a portion D of FIG. 5;

fig. 7 is a schematic structural view of still another gas range provided in the embodiment of the present disclosure;

FIG. 8 is a schematic cross-sectional view taken along line F-F of FIG. 7;

FIG. 9 is an enlarged schematic view of portion A of FIG. 8;

FIG. 10 is a schematic structural diagram of a first air separation plate and an air separation disc provided in the embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of a first air-separating sheet provided in an embodiment of the disclosure

Fig. 12 is a schematic structural view of a gas range provided in the embodiment of the present disclosure;

FIG. 13 is a schematic cross-sectional view taken along line P-P of FIG. 12;

FIG. 14 is an enlarged schematic view of the portion Q of FIG. 13;

FIG. 15 is a schematic sectional view taken along line K-K in FIG. 12;

fig. 16 is an enlarged schematic view of the L portion in fig. 15.

Reference numerals:

10. a burner; 101. an inner fire cover; 102. an outer fire cover; 103. a gas distribution plate; 104. an outer fire hole; 105. an inner fire hole; 20. an energy-gathering cover; 21. an energy-gathering cover body; 201. an upper cover; 202. a lower cover; 2021. a first top wall; 2022. a second top wall; 203. a base plate; 204. a first secondary air passage; 2041. a first air intake grille; 2042. an air outlet grille; 2043. a support boss; 2044. an inlet of a first secondary air channel; 205. a second secondary air passage; 2051. a second air inlet grille; 2052. a supporting seat; 2053. an inlet of a second secondary air channel; 2054. an outlet of the second secondary air passage; 30. a gas distribution member; 40. a blocking portion; 401. an outer ring; 50. a first gas distribution sheet; 501. a first secondary air flow path; 502. a second secondary air flow path; 503. a side wall; 504. a top wall; 5041. a first end portion; 5042. a second end portion; 60. a second air-separating sheet; 601. a first sub-second secondary air passage; 602. a second sub-second secondary air passage; 14. an outer wall of the energy-gathering cover; 15. an inner wall of the energy-gathering cover; 16. a thermally insulating cavity; 2. an outer fire cap assembly; 2111. an outlet of the outer fire hole; 212. a flame stabilizing hole; 2121. an outlet of the flame stabilizing hole; 213. a first outer sidewall section; 214. a second outer sidewall section; 215. a third outer sidewall section; 216. bending; 217. an outer sidewall; 218. bending the corner; 5. and (4) guiding the flow channel.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

Referring to fig. 12-16, embodiments of the present disclosure provide a gas range including a burner including an outer fire cap assembly 2, a base plate 203, and a concentrator cap 20.

As shown in fig. 13 to 16, the outer fire cover assembly 2 includes an outer fire cover 102 and an air distribution plate 103 located below the outer fire cover 102, the outer fire cover 102 is provided with outer fire holes 104 and/or flame stabilizing holes 212, and the flame stabilizing holes are annular extending along the circumferential direction of the outer fire cover and are communicated with the outer fire holes. The gas stove further comprises a burner, and the gas distribution plate 103 defines a gas channel, and gas flows into the outer fire holes 104 and/or the flame stabilizing holes 212 through the gas channel and is sprayed out from the outlets 2111 of the outer fire holes 104 and/or the outlets 2121 of the flame stabilizing holes. The gas distributor 103 is used in cooperation with the burner and the outer fire cover 102, for example, the gas distributor 103 is disposed between the burner and the outer fire cover 102 and configured to communicate with the intermediate flow path of the gas (or the mixed gas of air and gas) of the burner and the outer fire cover 102, so that the gas enters the gas distributor 103 from the burner and then flows into the outer fire cover 102, and is finally ignited to form a flame at the outer fire holes 104 and/or the flame stabilizing holes 212 of the outer fire cover 102.

The inner fire cover 101 is communicated with the gas channel of the gas distribution plate 103.

The energy concentrating cover 20 is arranged on the outer side of the outer fire cover component 2, for example, on the outer side of the outer fire cover 102.

As shown in fig. 13 and 15, the energy collecting cover 20 includes an upper cover 201 and a lower cover 202, the upper cover 201 is located above the lower cover 202, the upper cover 201 and the lower cover 202 define the heat insulating cavity 16, and by collecting hot air combusted by flames in the energy collecting cover, convection and radiation heat exchange of the flames to the outside are reduced, heat energy loss is reduced to a certain extent, and heat efficiency is improved.

The middle part of the upper cover 201 protrudes towards the lower cover 202 to form an inwards concave structure, and the inwards concave structure increases the retention time of the high-temperature flue gas on the upper surface of the upper cover 201, so that the high-temperature flue gas can be subjected to secondary combustion and heat exchange on the upper surface of the upper cover 201. Meanwhile, the upper surface of the upper cover 201 can also perform radiation heat exchange on the bottom of the pot after being heated.

The bottom plate 203 is located below the energy collecting cover 20 and defines a secondary air passage with the energy collecting cover 20, and for convenience of description, the secondary air passage is named as a second secondary air passage 205, and the bottom plate may be a liquid storage tray or a panel of a gas range. The high-temperature flame and the flue gas are separated from the second secondary air channel 205 by the heat insulation cavity 16, so that the situation that the actual effect improvement effect of the energy collecting cover 20 is reduced by quickly conducting heat to the lower cover 202 after the upper cover 201 is heated and exchanging heat with the surrounding air and the gas stove panel after the lower cover 202 is heated is avoided.

The energy-gathering cover 20 comprises an inner wall 15, an outer wall 14 (namely a second air inlet grille 2051) and an energy-gathering cover body 21, wherein the inner wall is arranged on the inner side of the energy-gathering cover body 21, the outer wall is arranged on the outer side of the energy-gathering cover body 21, and an inlet 2053 of a second secondary air channel is arranged on the outer wall 14 of the energy-gathering cover.

As shown in fig. 14, a guide flow passage 5 is formed between the inner wall 15 of the energy concentrating cover and the outer side wall 217 of the outer fire cover assembly 2, the outlet 2111 of the outer fire hole 104 and/or the outlet 2121 of the flame stabilizing hole are communicated with the second secondary air passage 205 through the guide flow passage 5, and the guide flow passage 5 is inclined toward the outlet 2111 of the outer fire hole 104 and/or the outlet 2121 of the flame stabilizing hole along the flow direction of the secondary air in the guide flow passage 5.

The outside air enters the second secondary air channel 205 through the inlet 2053 of the second secondary air channel, flows out of the outlet 2054 of the second secondary air channel, and enters the guide runner 5 after flowing out of the outlet 2054 of the second secondary air channel, because the guide runner 5 is inclined toward the outer flame holes 104 and/or the flame stabilizing holes 212 in the flow direction of the secondary air in the guide runner 5, in other words, the inner wall surface of the guide runner 5 is inclined toward the outer flame holes 104 and/or the flame stabilizing holes 212 in the flow direction of the secondary air in the guide runner 5. Thus, when the secondary air flows in the guide flow passage 5, the secondary air flows towards the outlet 2111 of the outer flame hole 104 and/or the outlet 2121 (root) of the flame stabilizing hole through the guiding and guiding action of the inner wall surface of the guide flow passage 5, the secondary air quantity reaching the root of the outer flame hole 104 and/or the flame stabilizing hole 212 is increased, and the heat efficiency of the gas stove is improved.

The outer side wall 217 of the outer fire cover assembly 2 comprises a first outer side wall section 213 and a second outer side wall section 214 located above the first outer side wall section 213, the first outer side wall section 213 and the second outer side wall section 214 are both located below the outlet 2111 of the outer fire hole 104 and/or the outlet 2121 of the flame stabilizing hole, the inner wall 15 of the shaped energy housing is arranged opposite to the first outer side wall section 213, and the second outer side wall section 214 is inclined towards the outlet 2111 of the outer fire hole 104 and/or the outlet 2121 of the flame stabilizing hole in the flow direction of the secondary air in the guide flow channel 5.

After passing through the inner wall 15 and the first outer side wall section 213 of the shaped hood, the secondary air in the guiding duct 5 flows to the second outer side wall section 214, is guided by the second outer side wall section 214, and flows to the outlet 2111 of the outer flame hole 104 and/or the outlet 2121 of the flame stabilizing hole, so that the secondary air reaches the root of the outer flame hole 104 and/or the flame stabilizing hole 212.

The second outer sidewall section 214 is closer to the outlet 2111 of the outer flame ports 104 and/or the outlet 2121 of the flame holding holes than the first outer sidewall section 213, and therefore, the second outer sidewall section 214 is inclined toward the outlet 2111 of the outer flame ports 104 and/or the outlet 2121 of the flame holding holes in the flow direction of the secondary air in the guide flow path 5, and the flow of the secondary air toward the outlet 2111 of the outer flame ports 104 and/or the outlet 2121 of the flame holding holes is more effectively guided.

As shown in fig. 14, optionally, the upper end of the first outer sidewall section 213 is connected to the lower end of the second outer sidewall section 214, and the outer diameter of the second outer sidewall section 214 is smaller than the outer diameter of the outlet 2111 of the outer fire hole 104 and/or the outer diameter of the outlet 2121 of the flame stabilizing hole, so that the outer diameter of the first outer sidewall section 213 can be reduced, and the inner diameter of the energy concentrating cover 20 can be reduced under the condition that the flow area of the guide runner 5 is constant, thereby avoiding the first energy concentrating cover 20 from being oversized and increasing the cost of the gas range.

The outer diameter of the second outer sidewall section 214 is smaller than the outer diameter of the outlet 2111 of the outer flame ports 104 and/or the outlet 2121 of the flame holding holes, so that the second outer sidewall section 214 is inclined upward in the inside-out direction to achieve that the second outer sidewall section 214 is inclined toward the outlet 2111 of the outer flame ports 104 and/or the outlet 2121 of the flame holding holes in the flow direction of the secondary air in the guide flow path 5.

It should be noted that, in the flow direction of the air flow in the guide flow passage 5, the second outer sidewall section 214 is inclined toward the outlet 2111 of the outer fire hole 104 and/or the outlet 2121 of the flame stabilizing hole, so that, in the flow direction of the air flow in the guide flow passage 5, the outer diameter of the second outer sidewall section 214 is varied, and therefore, the outer diameter of the second outer sidewall 217 can be understood as the average outer diameter of the second outer sidewall 217.

Alternatively, as shown in fig. 14, the inner wall 15 of the concentrator cap is non-parallel to the second outer sidewall section 214.

In this embodiment, the secondary air in the guiding flow passage 5 is guided by the inner wall 15 and the first outer sidewall section 213 of the energy concentrating cover and then flows to the second outer sidewall section 214, and the inner wall 15 and the second outer sidewall section 214 of the energy concentrating cover are not parallel, so that the secondary air guided by the inner wall 15 and the first outer sidewall section 213 of the energy concentrating cover turns at the second outer sidewall section 214, and smoothly reaches the outlet 2111 of the outer flame hole 104 and/or the outlet 2121 of the flame stabilizing hole.

Optionally, as shown in fig. 14, the first and second

outer sidewall sections

213, 214 are not parallel, and the connection of the first and second

outer sidewall sections

213, 214 forms a bend 216.

In this embodiment, the secondary air in the guiding flow passage 5 is guided by the inner wall 15 and the first outer sidewall section 213 of the energy concentrating cover and then flows to the second outer sidewall section 214, and the first outer sidewall section 213 is not parallel to the second outer sidewall section 214, so that the secondary air guided by the inner wall 15 and the first outer sidewall section 213 of the energy concentrating cover turns at the second outer sidewall section 214 and smoothly reaches the outlet 2111 of the outer flame hole 104 and/or the outlet 2121 of the flame stabilizing hole.

Optionally, in the outside-in direction, the inner wall 15 of the shaped hood and/or the first outer side wall section 213 are inclined upward, directed upward by the secondary air, so that the secondary air smoothly reaches the second outer side wall section 214.

Optionally, the inner wall 15 of the shaped shield is parallel to the first outer sidewall section 213 or is angled in the range of 2 ° to 5 ° to the first outer sidewall section 213.

The inner wall 15 of the energy concentrating cover and the first outer side wall section 213 form two opposite inner wall surfaces of the guide runner 5, and the inner wall 15 of the energy concentrating cover is parallel to the first outer side wall section 213 or has a small included angle (2-5 degrees) with the first outer side wall section 213, so that the inner wall 15 of the energy concentrating cover is parallel or nearly parallel to the first outer side wall section 213, and secondary air can smoothly flow in the guide runner 5.

The angle between the inner wall 15 of the shaped cap and the first outer sidewall section 213 may be 2 °, 3 °, 4 ° or 5 °.

Optionally, the top end of the inner wall 15 of the energy collecting cover is positioned below the outlet 2111 of the outer flame hole 104 and/or the outlet 2121 of the flame stabilizing hole, so that the flame heat of the outer flame hole 104 and/or the flame stabilizing hole 212 can enter between the upper cover 201 and the bottom of the pot more.

Alternatively, the first outer side wall section 213 is disposed in an up-down direction, or in an outside-in direction, the second outer side wall section 214 is inclined upward.

Alternatively, as shown in fig. 14, the outer fire holes 104 extend downward and the flame stabilizing holes 211 extend horizontally in the outside-in direction.

Optionally, the height difference between the top end of the inner wall 15 of the energy collecting cover and the outlet 2111 of the outer fire hole is 2mm-8mm, for example, 2mm, 2.5mm, 4mm, 6mm or 8mm, so as to avoid that the height between the top end of the inner wall 15 of the energy collecting cover and the outlet 2111 of the outer fire hole is too small, which results in that only a small part of flame heat of the outer fire hole 104 can enter between the upper surface of the upper cover 201 and the bottom of the boiler, and that the height between the top end of the inner wall 15 of the energy collecting cover and the outlet 2111 of the outer fire hole is too large, which results in that the flame heat of the outer fire hole 104 enters between the upper cover 201 and the bottom of the boiler, and then the heat is larger at any time, and cannot effectively exchange heat with the bottom of the boiler.

Optionally, the height difference between the top end of the inner wall 15 of the energy collecting cover and the outlet 2121 of the flame stabilizing hole is 2mm-8mm, for example, 2mm, 2.5mm, 4mm, 6mm or 8mm, and it is avoided that the height between the top end of the inner wall 15 of the energy collecting cover and the outlet 2121 of the flame stabilizing hole is too small, so that only a small part of flame heat of the flame stabilizing hole 212 can enter between the upper surface of the upper cover 201 and the bottom of the pot, and it is also avoided that the height between the top end of the inner wall 15 of the energy collecting cover and the outlet 2121 of the flame stabilizing hole is too large, so that the heat of the flame stabilizing hole 212 enters between the upper cover 201 and the bottom of the pot, and then is large at any time, and cannot effectively exchange heat with the bottom of the pot.

Alternatively, as shown in fig. 14, the inner wall 15 of the concentrator cap is connected to the upper cap 201, it being understood that the inner wall 15 of the concentrator cap may also be connected to the lower cap 202.

The inner wall 15 of the concentrator cap is annular in shape extending in the circumferential direction of the concentrator cap 20.

Optionally, as shown in fig. 13, the gas stove further includes an outer ring 401, the outer ring 401 is connected to the outside of the energy-gathering cover body 21, and the outer ring 401 is higher than the top end of the inner wall 15 of the energy-gathering cover, so that the upper cover 201 forms a concave structure, and the high-temperature flue gas can flow back inwards after flowing to the outer ring 401.

The height difference between the outer ring 401 and the top end of the inner wall 15 of the energy-gathering cover is 15mm-20mm, for example 15mm, 18mm or 20mm, so that the situation that high-temperature smoke cannot flow back due to too small height difference is avoided, and the situation that the size of the energy-gathering cover 20 is increased due to too large height difference is avoided.

Alternatively, as shown in fig. 13, the outer ring 401 is connected to the outside of the upper shroud 201 and has a ring shape extending in the circumferential direction of the power concentrating shroud 20.

Optionally, as shown in fig. 15, a blocking portion 40 is protruded on the upper surface of the upper cover 201 to increase the resistance of the smoke flowing back from the outer ring to the inside.

The upper surface of upper shield 201 is upwards protruded to stop part 40 for stop part 40 can increase the resistance that the flue gas flows back, reduces the speed that the flue gas flows back, thereby the time of increase flue gas dwell in the space between the upper surface of upper shield 201 and the bottom of a boiler makes the flue gas can carry out abundant heat transfer with the bottom of a boiler, improves the thermal efficiency of gas-cooker, and the combustible substance in the flue gas can carry out the postcombustion, further improves the thermal efficiency of gas-cooker.

The blocking portion 40 may be in the shape of a drill or a quadrangular pyramid (as shown in fig. 1), or a crescent-shaped mound (as shown in fig. 7).

The width (the radial size of the energy-gathering cover 20 along the outer ring 401) range of the outer ring 401 is 2-6mm, so that the phenomenon that the smoke flows outwards from the space between the outer ring 401 and the bottom of the pot due to too small resistance caused by too small width is avoided, and the phenomenon that the smoke flows outwards due to too large width is avoided.

Optionally, the connection between the inner wall 15 of the energy-gathering cover and the upper cover 201 adopts arc transition, so that on one hand, the inner wall 15 of the energy-gathering cover is smoothly connected with the upper cover 201, the flow resistance of flame heat generated by the outer fire holes 104 and/or the flame stabilizing holes 212 entering the upper cover 201 and the bottom of the pot is reduced, and on the other hand, the connection strength between the inner wall 15 of the energy-gathering cover and the upper cover 201 is increased.

Optionally, as shown in fig. 14, the outer sidewall 217 of the outer fire cover assembly 2 further includes a third outer sidewall section 215, and the third outer sidewall section 215 is located between the outlet 2111 of the outer fire hole 104 and/or the outlet 2121 of the flame-stabilizing hole and the second outer sidewall section 214, in other words, the third outer sidewall section 215 is provided between the outlet 2111 of the outer fire hole 104 and/or the outlet 2121 of the flame-stabilizing hole and the second outer sidewall section 214, so as to avoid that the sidewall at the outlet 2111 of the outer fire hole 104 and/or the outlet 2121 of the flame-stabilizing hole is too thin, which affects the structural reliability of the outer fire hole 104 and/or the flame-stabilizing hole 212.

The third outer side wall section 215 and the second outer side wall section 214 have a folded angle 218 therebetween, so as to avoid the third outer side wall section 215 and the second outer side wall section 214 being inclined in the same direction, which may result in the side wall at the outlet 2111 of the outer fire hole 104 and/or the outlet 2121 of the flame stabilizing hole being too thin.

Optionally, the third outer sidewall section 215 extends in the up-down direction, on the one hand, the difficulty of forming the third outer sidewall section 215 can be simplified and the strength of the sidewall at the outlet 2111 of the outer fire hole 104 and/or the outlet 2121 of the flame stabilizing hole can be increased, and on the other hand, the secondary air passing through the second outer sidewall section 214 can be buffered at the third outer sidewall section 215, so that the secondary air can flow orderly to the outlet 2111 of the outer fire hole 104 and/or the outlet 2121 of the flame stabilizing hole.

With reference to fig. 1 to 11, the energy collecting cover 20 of the gas stove according to the embodiment of the present disclosure includes an upper cover 201 and a lower cover 202, the lower cover 202 is located below the upper cover 201, and the upper cover 201 and the lower cover 202 enclose a first secondary air channel 204 for supplying secondary air to the outer fire cover 102; the bottom plate 203 is positioned below the lower cover 202 and forms a second secondary air channel 205 for supplying secondary air to the inner fire cover 101 together with the lower cover 202; wherein the flow area of the first secondary air passage 204 is larger than the flow area of the second secondary air passage 205.

When a fluid (secondary air in this application) flows through the pipe, its cross section perpendicular to the flow direction is a flow cross section, and the area of the flow cross section is a flow area.

In fig. 3 and 8, the inside and the outside of the gas range are shown, and in fig. 3, 5 and 8, the arrows indicate the flow direction of the secondary air in the gas range.

The flame firepower of outer fire lid 102 department is stronger, the secondary air that needs is also more, the flow area of first secondary air passageway 204 is greater than the flow area of second secondary air, the secondary air that makes the entering first secondary air passageway 204 is more, thereby it is sufficient to guarantee outer fire lid 102 department's supply secondary air, the flame that makes outer fire lid 102 can fully burn, the flow area of second secondary air passageway 205 is less than the flow area of first secondary air passageway 204, can make the space of more energy-gathering covers 20 of saving give first secondary air passageway 204, and can also avoid second secondary air passageway 205 and first secondary air passageway 204 to compete for the secondary air.

The upper cover 201 and the lower cover 202 are heated due to the heat conduction and radiation of the flame of the gas stove, so that the temperature of the upper cover 201 and the lower cover 202 is high, the lower surface of the upper cover 201 and the upper surface of the lower cover 202 can transfer heat to the secondary air in the first secondary air channel 204, the preheating effect of the secondary air in the first secondary air channel 204 is improved, and the heat required when the secondary air reaches the outer fire cover 102 for combustion is reduced.

The bottom plate 203 is also subjected to the heat conduction and radiation effects of the flame of the gas stove, and the temperature of the bottom plate 203 is higher, so that the lower surface of the lower cover 202 and the upper surface of the bottom plate 203 can transfer heat to the secondary air in the second secondary air channel 205, thereby increasing the preheating effect of the secondary air in the second secondary air channel 205 and reducing the heat required when the secondary air reaches the inner fire cover 101 for combustion.

The outer fire cover 102 is provided with an outer fire hole 104, the inner fire cover 101 is provided with an inner fire hole 105, the flame at the outer fire hole 104 is outer ring fire, the flame at the inner fire hole 105 is inner ring fire, when the burner 10 works, the inner ring fire and/or the outer ring fire burn simultaneously to provide heat for a pot, wherein, the energy-gathering cover 20 can reflect the heat radiation diffused outwards when the burner 10 works to the pot, thereby realizing energy gathering.

Optionally, the height of the first secondary air channel 204 is greater than the height of the second secondary air channel 205, wherein the height of the first secondary air channel 204 refers to the average height of the first secondary air channel 204 and the height of the second secondary air channel 205 refers to the average height of the second secondary air channel 205.

Since the height of the first secondary air passage 204 is greater than the height of the second secondary air passage 205, the flow area of the first secondary air passage 204 is greater than the flow area of the second secondary air passage 205, and by controlling the flow areas of the first secondary air passage 204 and the second secondary air passage 205 in the height direction, the operation is simple and easy to implement.

Alternatively, the length of the first secondary air passage 204 in the circumferential direction may also be greater than the length of the second secondary air passage 205 in the circumferential direction.

Optionally, the total area of the inlets 2044 of the first secondary air passage is greater than the total area of the inlets 2053 of the second secondary air passage.

The area of the inlet 2044 of the first secondary air passage is large, and the amount of secondary air of the first secondary air passage 204 entering through the inlet 2044 of the first secondary air passage is also large, improving the combustion efficiency of the outer ring fire.

Optionally, the number of inlets 2044 of the first secondary air passage is one or more.

Optionally, the inlets 2044 of the first plurality of secondary air passages are arranged sequentially in the circumferential direction of the concentrator shroud 20.

Alternatively, the sum of the areas of the inlets 2044 of the first plurality of secondary air passages is the total area of the inlets 2044 of the first secondary air passages and the sum of the areas of the inlets 2053 of the second plurality of secondary air passages is the total area of the inlets 2053 of the second secondary air passages.

Optionally, the number of inlets 2053 of the second secondary air passage may also be one or more.

Optionally, the number of inlets 2053 of the second secondary air passage is less than the number of inlets 2044 of the first secondary air passage.

In a specific embodiment, as shown in fig. 1 to 3, the energy collecting cover 20 further includes a first air inlet grille 2041, the first air inlet grille 2041 is connected to the outer side of the upper cover 201 or the lower cover 202 and is located between the upper cover 201 and the lower cover 202, and grille holes of the first air inlet grille 2041 form an inlet 2044 of the first secondary air channel.

The first air inlet grille 2041 facilitates the secondary air to enter the first secondary air channel 204, and in the first aspect, the first air inlet grille 2041 can protect the first secondary air channel 204 from the external impurities entering the first secondary air channel 204; in the second aspect, the first air inlet grille 2041 makes the secondary air entering the first secondary air channel 204 uniform and stable, and plays a certain role in guiding the flow; in a third aspect, the first air inlet grille 2041 ensures the relative tightness of the first secondary air channel 204, so that the secondary air entering the first secondary air channel 204 cannot easily flow out, thereby increasing the contact time of the secondary air in the first secondary air channel 204 with the lower surface of the upper cover 201 and the upper surface of the lower cover 202, so that the lower surface of the upper cover 201 and the upper surface of the lower cover 202 can transfer heat to the secondary air in the first secondary air channel 204, and thus increasing the preheating effect of the secondary air in the first secondary air channel 204.

Optionally, the first air grille 2041 is downwardly inclined in an outward-inward direction.

First air inlet grid 2041 is convenient for the secondary air to get into first secondary air channel 204 by the external world, and in addition, the air inlet check downward sloping for the soup that the pan spills over and food waste are difficult to flow into first secondary air channel 204 through the grid hole of first air inlet grid 2041 in, thereby inside the protection gathers can cover 20, the cleanness of the gas-cooker of being convenient for, the life of extension gas-cooker.

Alternatively, the grille holes of the first air intake grille 2041 are arranged uniformly in sequence along the circumferential direction of the upper cover 201 or the lower cover 202.

Alternatively, the upper cover 201 and the lower cover 202 are of an integral structure, the upper cover 201 and the lower cover 202 may be connected to each other by welding, and the upper cover 201 and the lower cover 202 may also be of a separable structure.

In another specific embodiment, as shown in fig. 4 and 5, the energy concentrating cover 20 further includes a plurality of supporting protrusions 2043, and the supporting protrusions 2043 are supported between the upper cover 201 and the lower cover 202, wherein the number of the supporting protrusions 2043 is multiple, and the plurality of supporting protrusions 2043 are spaced apart along the circumference of the energy concentrating cover 20, and the gap between two adjacent supporting protrusions 2043 forms the inlet 2044 of the first secondary air passage.

The supporting protrusions 2043 can support the upper housing 201 to achieve the assembly between the upper housing 201 and the lower housing 202, and on the other hand, the supporting protrusions 2043 can reduce the contact area between the upper housing 201 and the lower housing 202, thereby reducing the heat transferred from the upper housing 201 to the lower housing 202.

Alternatively, since the first secondary air passage 204 is relatively closed, by controlling the height of the support protrusion 2043, the flow area of the inlet 2044 of the first secondary air passage is controlled so that the amount of secondary air entering the inlet 2044 of the first secondary air passage corresponds to the amount of secondary air supply required for the outer ring fire, no excess air is discharged from the first secondary air passage 204, and the air in the first secondary air passage 204 is entirely used to supply the outer ring fire. Therefore, the heat transferred to the first secondary air channel 204 by the upper cover 201 and the lower cover 202 is completely used for supplying the external fire for combustion, thereby preventing energy waste and improving energy utilization efficiency, and meanwhile, the secondary air in the first secondary air channel 204 is better preheated, and the heat efficiency of the gas stove can be obviously improved after being mixed with the external fire for combustion.

In a specific embodiment, as shown in fig. 1 and 3, the energy concentrating cover 20 further comprises a second air inlet grille 2051, the second air inlet grille 2051 is connected to the outer side of the lower cover 202 or the bottom plate 203 and is positioned between the lower cover 202 and the bottom plate 203, and the grille holes of the second air inlet grille 2051 form inlets 2053 of the second secondary air passages.

The second air inlet grille 2051 facilitates the secondary air to enter the second secondary air channel 205, and in the first aspect, the second air inlet grille 2051 can protect the second secondary air channel 205 from the external impurities entering the second secondary air channel 205; in the second aspect, the second air inlet grille 2051 makes the secondary air entering the second secondary air channel 205 uniform and stable, and plays a certain role in guiding the flow; in a third aspect, the second air inlet grille 2051 ensures the relative tightness of the second secondary air channel 205, so that the secondary air entering the second secondary air channel 205 cannot easily flow out, thereby increasing the contact time of the secondary air in the second secondary air channel 205 with the lower surface of the lower cover 202 and the upper surface of the bottom plate 203, so that the lower surface of the lower cover 202 and the upper surface of the bottom plate 203 can transfer heat to the secondary air in the second secondary air channel 205, and thus increasing the preheating effect of the secondary air in the second secondary air channel 205.

Alternatively, the grid holes of the second air inlet grid 2051 are arranged uniformly in sequence along the circumferential direction of the energy concentrating cover 20.

In another specific embodiment, as shown in fig. 4 and 5, the energy concentrating cover 20 further includes a support seat 2052, the support seat 2052 is supported between the outer side of the bottom plate 203 and the outer side of the lower cover 202, the number of the support seats 2052 is plural, and the plural support seats 2052 are arranged at intervals along the circumferential direction of the energy concentrating cover 20, and the gap between two adjacent support seats 2052 forms an inlet 2053 of the second secondary air passage.

The external air flows into the second secondary air channel 205 through the gap between the two adjacent supporting seats 2052, and supplies secondary air for the inner ring fire, thereby improving the gas efficiency.

Alternatively, because the second secondary air passage 205 is relatively closed, by controlling the height of the support base 2052, the flow area of the inlet 2053 of the second secondary air passage is controlled so that the amount of secondary air entering the inlet 2053 of the second secondary air passage corresponds to the amount of secondary air supply required for the inner ring fire, no excess air is discharged from the second secondary air passage 205, and the air in the second secondary air passage 205 is entirely used to supply the outer ring fire. In this way, the heat transferred from the bottom plate 203 and the lower cover 202 to the second secondary air channel 205 is used to supply the external flame for combustion, thereby preventing energy waste and improving energy utilization efficiency, and meanwhile, the secondary air in the second secondary air channel 205 is better preheated, and the heat efficiency of the gas stove can be obviously improved after being mixed with the internal flame for combustion.

As shown in fig. 1 to 5, the energy concentrating cover 20 further includes an air outlet grille 2042, the air outlet grille 2042 is connected to the inner side of the upper cover 201 or the lower cover 202 and is located between the upper cover 201 and the lower cover 202, and grille holes of the air outlet grille 2042 form an outlet of the first secondary air channel 204.

The outlet of the first secondary air channel 204 is communicated with the outer fire, and the outside air enters the first secondary air channel 204 through the inlet 2044 of the first secondary air channel, flows to the outer fire hole 104 from the grid hole of the air outlet grid 2042, and provides secondary air for the outer fire, thereby improving the combustion efficiency.

Optionally, the outlet grille 2042 is inclined upward in the outside-in direction.

As shown in fig. 3 and 5, the outlet grille 2042 connected to the upper casing 201 has grille holes arranged uniformly in the circumferential direction of the upper casing 201 and connected to the inside of the lower casing 202.

Optionally, the gas range further comprises an air separating member disposed between the outlet of the first secondary air passage 204 and the outlet of the second secondary air passage 205 for separating the first secondary air passage 204 and the second secondary air passage 205.

The air distributor 30 separates the secondary air flowing out from the outlet of the first secondary air channel 204 and the secondary air flowing out from the outlet of the second secondary air channel 205, so that the secondary air flowing out from the first secondary air channel 204 and the secondary air flowing out from the second secondary air channel 205 cannot be mixed, and particularly, the secondary air of the second secondary air channel 205 cannot flow to the outer fire due to the thermal injection and natural injection of the outer fire, so that the secondary air of the first secondary air channel 204 and the secondary air of the second secondary air channel 205 can be pertinently supplied to the outer fire cover 102 and the inner fire cover 101, and the utilization rate of the secondary air and the combustion efficiency of fuel are improved.

Optionally, the gas distributing member 30 is inclined upward in the outside-in direction.

On the one hand, the contact area of the secondary air flowing out of the outlet of the first secondary air channel 204 and the air distributing part 30 is increased, so that the secondary air is fully preheated, the preheating efficiency of the secondary air is improved, meanwhile, the contact area of the secondary air flowing out of the outlet of the secondary air channel 205 and the secondary air is also increased, and the preheating efficiency of the secondary air is improved. On the other hand, when the gas-cooker was used, the soup that the pan spilled over during the culinary art, residue etc. were followed branch gas spare 30 and are flowed to bottom plate 203 department downwards, divide gas spare 30 to lead the flow of soup for the soup can not get into combustor 10 and gather inside the energy cover 20, is convenient for clean the gas-cooker, protects the gas-cooker simultaneously, prolongs the life of gas-cooker.

Optionally, the gas distributing member 30 is partially positioned below the lower cover 202.

In one embodiment, the gas distributing member 30 may be attached to the lower housing 202.

The air distributing member 30 is attached to the lower surface of the lower cover 202, so that the first secondary air passage 204 and the second secondary air passage 205 are completely isolated and are not communicated with each other, and secondary air can be used for better and pertinently replenishing outer ring fire and inner ring fire

In another embodiment, a gap may exist between the gas distributing member 30 and the lower housing 202.

There is the clearance between branch gas spare 30 and the lower cover 202, and the hot water juice or the food waste that the pan of being convenient for spills over flows through the clearance, can not flow into and gather inside the energy cover 20, and the washing of the gas-cooker of being convenient for has also protected the gas-cooker simultaneously, has prolonged the life of gas-cooker.

Optionally, the gap between the gas distributing member 30 and the lower cover 202 is 0.5mm-3.0mm, for example, 0.5mm, 1.0mm, 2.0mm, 3.0 mm.

Optionally, the energy concentrating cover 20 further comprises a blocking part 40, and the blocking part 40 is convexly arranged on the upper surface of the upper cover 201 so as to increase the resistance of the smoke flowing back from the outer edge 401 of the upper cover to the inside.

Optionally, as shown in fig. 3, 10 and 11, the burner 10 further includes a gas distribution plate 103, the gas distribution plate 103 defines a gas passage and a secondary air flow passage, the gas passage communicates with both the inner fire cover 101 and the outer fire cover 102, and the second secondary air passage 205 communicates with the secondary air flow passage. The gas stove further comprises a first air distribution sheet 50, wherein the first air distribution sheet 50 is arranged in the secondary air flow channel and divides the secondary air flow channel into a first secondary air flow channel 501 for communicating the second secondary air channel with the outer fire cover 102 and a second secondary air flow channel 502 for communicating the second secondary air channel with the inner fire cover 101.

The first air dividing sheet divides the secondary air entering the secondary air flow channel, so that the first secondary air flow channel 501 and the second secondary air flow channel 502 are independent from each other and do not interfere with each other, particularly, the secondary air in the second secondary air flow channel 502 does not interfere with the secondary air in the first secondary air flow channel 501, the secondary air can be pertinently supplied to the upper edge of the outer fire cover 102 and the inner fire cover 101, and the utilization rate of the secondary air and the combustion efficiency of fuel gas are improved.

Alternatively, with reference to fig. 10 and 11, the first air distribution piece 50 includes a side wall 503, the side wall 503 is located in the secondary air flow passage, and the length of the side wall 503 in the circumferential direction of the air distribution plate 103 is the same as the length of the secondary air flow passage in the circumferential direction of the air distribution plate 103.

Optionally, the number of the secondary air channels is multiple, and the multiple secondary air channels are sequentially arranged along the circumferential direction of the air distributor 103, wherein the number of the side walls 503 is equal to the number of the secondary air channels and corresponds to the number of the secondary air channels.

Optionally, the first gas distribution piece 50 further comprises a top wall 504, the top wall 504 comprising a first end 5041 and a second end 5042 connected, the first end 5041 being connected to the top of the side wall 503, the second end 5042 being located inside the first end 5041 and being inclined towards the inner fire cover 101.

Optionally, the gas distribution plate 103 is located below the inner fire cover 101, the gas distribution plate 103 includes a plurality of hollow connecting ribs sequentially arranged along a circumferential direction of the gas distribution plate 103, a secondary air flow channel is formed between two adjacent connecting ribs, at least a part of a gas channel is formed in a hollow area, and the first end 5041 abuts against an upper surface of the connecting rib.

Optionally, the inner fire cover 101 is provided with inner fire holes 105, the inner fire holes 105 are sequentially arranged along the circumferential direction of the inner fire cover 101, wherein the height of the upper surface of the first air splitter 50 is less than the height of any one of the inner fire holes 105.

Optionally, the first end 5041 is sloped downwardly or horizontally in an outside-in direction.

Alternatively, as shown in fig. 7 to 9, the gas range further includes a second air distribution piece 60 connected to the outside of the air distribution plate 103, wherein the second air distribution piece 60 is located in the second secondary air passage 205 and divides the second secondary air passage 205 into a first sub-second secondary air passage 601 communicating with the outer fire hole 104 and a second sub-second secondary air passage 602 communicating with the inner fire hole 105.

The second air distribution piece 60 divides the second secondary air channel 205 into a first secondary air channel 601 and a second secondary air channel 602, so that secondary air in the first secondary air channel 601 and secondary air in the second secondary air channel 602 are mutually independent, natural injection and thermal injection effects caused by outer ring fire are avoided, most of the secondary air reaches the outer ring fire, secondary air at the inner ring fire is insufficient, heat of the inner ring fire and heat of the outer ring fire of the burner 10 are uneven, the cooker is heated unevenly, and the use experience of users is reduced.

Second air distribution piece 60 is connected in the outside of minute air disk 103, on the one hand, the installation of second air distribution piece 60 has been realized, be convenient for second air distribution piece 60 place stably, on the other hand, add second air distribution piece 60 in minute air disk 103 outside, second air distribution piece 60 is close to the export of second secondary air passageway 205, make secondary air just can shunt in second secondary air passageway 205, thereby make the secondary air in first son second secondary air passageway 601 and the son second secondary air passageway 602 contactless, thereby secondary air can not draw with the nature drawing effect so that most reaches outer ring fire department because of the heating power that receives outer ring fire draws.

Optionally, the second gas distribution piece 60 has an annular shape extending along the circumferential direction of the gas distribution disk 103.

Optionally, the second gas distribution piece 60 is inclined upward in the outside-in direction.

Optionally, the lower cover 202 includes a first top wall 2021 and a second top wall 2022, the first top wall 2021 being inclined downward in an outward-inward direction; the second top wall 2022 is connected to the first top wall 2021, and the first top wall 2021 and the second top wall 2022 are sequentially arranged from the outside to the inside, wherein the second top wall 2022 is inclined upward from the outside to the inside; wherein the second air separation sheet 60 is parallel to the second top wall 2022.

The second air distribution piece 60 is parallel to the second top wall 2022 of the lower hood 202, and because the second top wall 2022 is close to the outlet of the secondary air channel, the second air distribution piece 60 is parallel to the second top wall 2022, so that the first secondary air channel 204 has no abrupt change of the sectional area, the flow of the secondary air in the first secondary air channel 204 is smoother, and the secondary air can smoothly reach the outer side of the outer fire cover 102.

Optionally, a second gas distribution piece 60 is attached to the lower edge of the gas distribution plate 103.

Optionally, the second air distribution piece 60 and the air distribution plate 103 are of an integral structure.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A gas range, comprising:

the outer fire cover component (2) is provided with an outer fire hole (104) and/or a flame stabilizing hole (212);

the energy-gathering cover (20) is sleeved on the outer side of the outer fire cap component (2);

a floor (203) located below the energy concentrating hood (20) and defining a secondary air passage with the energy concentrating hood (20);

the inner wall of the energy gathering cover (20) and the outer side wall of the outer fire cover assembly (2) are surrounded to form a guide flow channel (5), an outlet (2111) of the outer fire hole and/or an outlet (2121) of the flame stabilizing hole are communicated with the secondary air channel through the guide flow channel (5), and the guide flow channel (5) inclines towards the outlet (2111) of the outer fire hole and/or the outlet (2121) of the flame stabilizing hole along the flowing direction of secondary air in the guide flow channel (5).

2. Gas burner according to claim 1, characterized in that the outer side wall of the outer flame cover assembly (2) comprises:

a first outer sidewall section (213);

a second outer sidewall section (214) located above the first outer sidewall section (213) and below the outlet (2111) of the outer flame ports and/or the outlet (2121) of the flame stabilizing ports;

wherein the inner wall of the energy concentrating cover (20) is arranged opposite to the first outer side wall section (213), and the second outer side wall section (214) is inclined towards the outlet (2111) of the outer fire hole and/or the outlet (2121) of the flame stabilizing hole along the flowing direction of the secondary air in the guide runner (5).

3. Gas burner according to claim 2,

the outer diameter of the second outer side wall section (214) is smaller than the outer diameter of the outer fire hole outlet (2111) and/or the outer diameter of the stationary fire hole outlet (2121), and the second outer side wall section (214) is inclined upward in the inside-out direction.

4. Gas burner according to claim 2,

the inner wall of the shaped shield (20) is non-parallel to the second outer sidewall section (214); and/or

The first outer sidewall section (213) and the second outer sidewall section (214) are non-parallel.

5. Gas burner according to claim 2,

the inner wall and/or the first outer sidewall section (213) of the shaped hood (20) is inclined upwards in an outside-in direction.

6. Gas burner according to claim 2,

the inner wall of the energy concentrating cover (20) is parallel to the first outer side wall section (213) or the included angle between the inner wall and the first outer side wall section (213) ranges from 2 degrees to 5 degrees.

7. Gas burner according to claim 2, characterized in that the outer side wall of the outer flame cover assembly (2) further comprises:

a third outer sidewall section (215) between the outlet (2111) of the outer fire aperture (104) and/or the outlet of the flame stabilizing aperture (212) and the second outer sidewall section (214), the third outer sidewall section (215) having a break angle with the second outer sidewall section (214).

8. Gas range according to claim 7,

the third outer sidewall section (215) extends in an up-down direction.

9. Gas burner according to any of the claims 1 to 8,

the top end of the inner wall of the energy gathering cover (20) is positioned below the outlet (2111) of the outer flame hole and/or the outlet (2121) of the flame stabilizing hole, and the height difference between the top end of the inner wall and the outlet (2111) of the outer flame hole and/or the outlet (2121) of the flame stabilizing hole is 2-8 mm.

10. The gas range of any one of claims 1 to 8, further comprising:

the outer ring (401) is connected to the outer side of the energy gathering cover (20), the outer ring (401) is higher than the top end of the inner wall of the energy gathering cover (20), and the height difference between the outer ring (401) and the top end of the inner wall of the energy gathering cover (20) is 15-20 mm.