CN113237117B - Energy gathering ring and stove burner - Google Patents

Abstract

The invention discloses an energy gathering ring and a stove burner. The energy gathering ring comprises an annular lower layer body and an annular cavity with an upward opening; the annular upper layer body is coaxial with the lower layer body and covers the opening of the annular cavity; and the at least one middle layer body is fixed in the annular cavity, and a plurality of annular air heat insulation layers which are distributed up and down are isolated between the lower layer body and the upper layer body. The middle layer body is arranged in the annular cavity, so that an air heat insulation layer can be formed between the adjacent middle layer bodies, between the adjacent upper layer body and the middle layer body and between the adjacent middle layer body and the lower layer body, the air heat insulation layer can effectively reduce the heat conduction between the layer bodies, the loss of heat from the upper layer body to the lower layer body is reduced, the heat absorption of the cookware is enhanced, and the energy collecting effect of the energy collecting ring is better.

Description

Energy gathering ring and stove burner

Technical Field

The invention relates to an energy gathering ring and a cooker burner.

Background

At present, the highest-performance cooking utensils in the market have the heat load of 4.5kW and the heat efficiency of 75%, and with the increasing market competition of kitchen electrical products, all enterprises develop cooking utensils with larger firepower, higher heat efficiency and easiness in cleaning. On the premise of large load, there are no two ways to improve the heat efficiency, and firstly, the good burner flame combustion state strengthens the absorption of combustion heat; and the energy loss of combustion heat is reduced. In order to reduce the energy loss of combustion heat and improve the thermal efficiency of the cooker, an energy gathering ring is usually arranged at the periphery of an outer ring fire cover of the cooker, and the energy gathering ring has the functions of realizing the separation of cold air and hot air, absorbing the flame radiation heat of a burner and reflecting the flame radiation heat back to the bottom of a pot, so that the energy loss of the combustion heat is reduced and the thermal efficiency of the cooker is improved.

However, the existing energy-gathering ring absorbs the radiant heat of flame and reflects the heat back to the bottom of the cooker, so that the radiant heat loss is more, and the heat efficiency of the cooker is not improved enough.

Disclosure of Invention

The invention provides an energy gathering ring and a cooker burner, aiming at overcoming the defects that in the prior art, the heat loss of the energy gathering ring is more, and the heat efficiency of a cooker is improved lower.

The invention solves the technical problems through the following technical scheme:

a power ring for a cooktop burner, the power ring comprising:

the annular lower layer body is provided with an annular cavity with an upward opening;

the annular upper layer body is coaxial with the lower layer body and covers the opening of the annular cavity;

and the at least one middle layer body is fixed in the annular cavity, and a plurality of annular air heat insulation layers which are distributed up and down are isolated between the lower layer body and the upper layer body.

In this scheme, the direct combustion zone that faces of upper strata body, be used for upwards reflecting the heat radiation, play the effect of gathering energy, set up the middle level body in the annular chamber, thereby between the adjacent middle level body, between the adjacent upper strata body and the middle level body, the homoenergetic between the adjacent middle level body and the lower level body forms the air insulating layer, the air insulating layer can effectively reduce the heat-conduction between each level body, reduce the loss of heat from the upper strata body to the lower level body, strengthen the pan to thermal absorption, gather the energy effect of energy circle better.

Preferably, the energy gathering ring further comprises cushion blocks, and the adjacent upper layer body and the middle layer body, the adjacent middle layer body and the lower layer body are connected through the cushion blocks respectively.

In this scheme, because the cushion has certain height, set up the cushion between each lamina body for can keep separating in the height between each lamina body, thereby form the air insulating layer.

Preferably, the energy gathering ring further comprises a positioning body, the positioning body penetrates through the lower layer body, the cushion block and the middle layer body and then abuts against the upper layer body, and one end of the positioning body, which extends out of the lower layer body, bends towards the lower surface of the lower layer body and is fixedly connected with the lower surface.

In this scheme, through being fixed in the body of the lower floor with the location body, the body of the middle floor, the body of the upper floor and cushion wear to locate the location body on, avoided the body of the middle floor, the body of the upper floor and cushion to shift for the body of the lower floor axial or radial, improve the whole stability of gathering the circle in the use.

Preferably, the middle layer body comprises a middle layer bottom plate and a middle layer side plate which are both annular, the middle layer bottom plate is a horizontal plate, the middle layer side plate gradually extends upwards and outwards from the inner ring to the outer ring of the middle layer side plate, and the inner ring of the middle layer side plate is connected with the outer ring of the middle layer bottom plate.

In this scheme, the structure form that the middle level body adopted middle level curb plate and middle level bottom plate is similar with the structure of upper strata body and lower floor's body, is favorable to putting the middle level body between upper strata body and the lower floor's body on the one hand, and on the other hand, the middle level curb plate of outside extension also is favorable to upwards radiating heat, improves and gathers the energy effect.

Preferably, the upper body comprises an upper bottom plate and an upper side plate which are both annular, an inner ring of the upper side plate is connected with an outer ring of the upper bottom plate, and the upper side plate gradually extends upwards and outwards from the inner ring to the outer ring of the upper side plate.

In the scheme, the upper layer side plate extending outwards is beneficial to upwards radiating heat, and the energy gathering effect is improved.

Preferably, the upper side plate comprises a corner part and a side part, the corner part is clamped between two adjacent side parts, and a pot support is arranged at the center of each side part; and/or the presence of a gas in the atmosphere,

the outer ring of the upper layer side plate is provided with an annular horizontal part, the position of the horizontal part corresponding to the edge part is provided with a convex block which is convex upwards, and the convex block is used for guiding the smoke to the corner part of the upper layer side plate; and/or the presence of a gas in the atmosphere,

the outer ring of the upper layer body is provided with an annular outer positioning groove with a downward opening, and the outer ring of the lower layer body is positioned in the outer positioning groove; and/or the presence of a gas in the gas,

the inner ring of the upper body is provided with an annular inner positioning groove with a downward opening, and the inner ring of the lower body is positioned in the inner positioning groove; and/or the presence of a gas in the atmosphere,

the inner ring of the upper layer body protrudes upwards to form an annular convex ring.

In the scheme, the pot support is used for supporting the pot above the energy gathering ring, as the central position of the edge part is closest to the position of the furnace end, the convection heat exchange path between high-temperature flue gas and the inside of the pot is short, heat cannot be fully utilized, the exhaust gas temperature is easily caused to be overhigh, and the heat loss is increased;

the protruding block is arranged on the horizontal part, so that the area of a flue gas flow channel of the horizontal part corresponding to the edge part area is reduced, the exhaust resistance of the area is enhanced, the amount of flue gas flowing through the area is reduced, the flue gas is forced to flow out from four corners, the heat absorption of the cookware is enhanced, and meanwhile, the airflow outflow speed is improved and the heat exchange capability is enhanced due to the small flow area of the protruding block area;

the outer positioning groove is used for positioning, and the edge of the outer ring of the lower body is accommodated inside, so that overflowing liquid can be prevented from entering the annular cavity;

the inner positioning groove is used for positioning on one hand and accommodating the inner ring edge of the lower body inside on the other hand, so that overflowing liquid can be prevented from entering the annular cavity.

Preferably, the lower surface of the lower layer body has a plurality of downward protruding legs.

In this scheme, the lower floor body is placed on flourishing liquid dish usually, sets up the downward convex stabilizer blade and can make and leave the overgrate air import between the lower surface of lower floor body and the flourishing liquid dish, the flame burning of being convenient for.

Preferably, the lower surface of the lower body has at least one group of heat transfer enhancement structures, each heat transfer enhancement structure includes a plurality of strip-shaped protrusions arranged at intervals, and the strip-shaped protrusions extend outwards from a position close to the center of the lower body.

In this scheme, the heat of the lower floor body transmits the required secondary air of burning through the lower surface, and the strip lug has increased the area of contact of secondary air and the lower surface of lower floor body, strengthens heat convection, reduces the heat loss, strengthens burning.

Preferably, the energy gathering ring is square, four corners of the lower layer body are respectively provided with downward protruding support legs, and a group of heat exchange strengthening structures are arranged between the adjacent support legs.

In this scheme, square gathering can enclose and compare with traditional circular gathering, and rectangle length of side is equal to circular diameter, and the diagonal length of rectangle is greater than circular diameter, and the high temperature flue gas that the furnace end burning produced is longer with the route of pot bottom heat convection on diagonal direction, and the utilization burning heat that can be more abundant heats the pan, reduces the temperature of discharging fume to reduce calorific loss.

Preferably, the number of the middle layer bodies is two;

and/or the middle layer body is made of a metal plate;

and/or the air heat insulation layer is filled with heat insulation materials;

and/or the distance between the adjacent middle layer bodies ranges from 3mm to 10mm.

And/or the upper surface of the middle layer body is coated with a low-emissivity coating, or the upper surface of the middle layer body is a polished surface or an electroplated smooth surface;

and/or the lower surface of the middle layer body is coated with a low-emissivity coating, or the lower surface of the middle layer body is a polished surface or an electroplated smooth surface.

And/or the shape of the outer contour of the energy gathering ring is a polygon with the number of sides being more than or equal to four.

In the scheme, the air heat insulation layer is filled with heat insulation materials, so that the heat conduction among the layers can be further improved and reduced, and the heat insulation effect is improved;

the upper surface of the middle layer body adopts the arrangement and is used as a mirror reflection layer, so that the infrared radiation transmitted above can be reflected, and the radiation heat loss is reduced;

the upper surface and the lower surface of the middle layer body are both provided with the above arrangement, heat can be constantly reflected in the air heat insulation layers limited by the two adjacent middle layer bodies, and the air heat insulation layers and the mirror reflection layer are coupled and arranged to greatly reduce heat loss and improve the heat efficiency of the combustor.

A cooktop burner comprising a concentrator ring as described above.

In the scheme, the energy gathering ring is adopted in the cooker burner, and accordingly the energy gathering ring has the advantages of effectively reducing heat conduction between the layers, reducing loss of heat from the upper layer to the lower layer, strengthening heat absorption of a cooker and having a better energy gathering effect.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The positive progress effects of the invention are as follows:

for the energy gathering ring, the middle layer bodies are arranged in the annular cavity, so that air heat insulation layers can be formed between the adjacent middle layer bodies, between the adjacent upper layer bodies and the adjacent middle layer bodies, and between the adjacent middle layer bodies and the adjacent lower layer bodies, the air heat insulation layers can effectively reduce the heat conduction between the layer bodies, reduce the loss of heat from the upper layer bodies to the lower layer bodies, strengthen the absorption of heat by a cooker, and achieve better energy gathering effect of the energy gathering ring. The energy gathering ring is adopted in the cooker burner, and accordingly the energy gathering ring has the advantages of effectively reducing heat conduction among all layers and having a better energy gathering effect.

Drawings

Fig. 1 is a schematic perspective view of an energy concentrating ring according to embodiment 1 of the present invention.

Fig. 2 is a cross-sectional view of a power concentrating ring according to embodiment 1 of the present invention.

Fig. 3 is a schematic perspective view of a power concentrating ring according to embodiment 1 of the present invention, which does not include an upper body.

Fig. 4 is a bottom view of a power concentrating ring according to embodiment 1 of the present invention.

Fig. 5 is a perspective view of the energy concentrating ring according to embodiment 2 of the present invention.

Description of reference numerals:

energy gathering ring 10

Lower body 11

Foot 111

Enhanced heat exchange structure 112

Strip-shaped bump 113

Middle layer body 12

Middle layer bottom plate 121

Middle layer side plate 122

Upper body 13

Upper floor 131

Upper side plate 132

Corner 1321

Edge 1322

Horizontal part 133

Protruding block 134

External positioning groove 135

Inner positioning slot 136

Air insulation layer 14

Cushion block 15

Positioning body 16

Pot support 17

Annular chamber 18

Kitchen range burner 100

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

Example 1

The present embodiment provides a concentrator ring 10 for a cooktop burner. As shown in fig. 1 to 4, the energy concentrating ring 10 includes a ring-shaped lower layer 11, a ring-shaped upper layer 13 and at least one middle layer 12. The lower layer body 11 is provided with an annular cavity 18 with an upward opening; the upper layer body 13 and the lower layer body 11 are coaxially arranged and cover the opening of the annular cavity 18; the middle layer 12 is fixed in the annular cavity 18, and a plurality of annular air heat insulation layers 14 distributed up and down are separated between the lower layer 11 and the upper layer 13.

In this embodiment, the upper layer 13 directly faces the combustion area and is used for reflecting the heat radiation upwards to play a role in energy collection, the middle layer 12 is arranged in the annular cavity 18, so that the heat conduction between the adjacent middle layers 12, the heat loss from the upper layer 13 to the lower layer 11 is reduced, the absorption of the cookware to the heat is enhanced, and the energy collection effect of the energy collection ring 10 is better.

The energy-gathering ring 10 further comprises cushion blocks 15, and the adjacent upper layer body 13 and the middle layer body 12, the adjacent middle layer body 12 and the lower layer body 11 are respectively connected through the cushion blocks 15. Since the spacers 15 have a certain height, the spacers 15 are disposed between the layers, so that the layers can be separated in height, thereby forming the air insulation layer 14. The distance between adjacent middle layers 12 ranges from 3mm to 10mm. That is, the height of the pad 15 ranges from 3mm to 10mm. A plurality of cushion blocks 15 can be arranged in the same air heat insulation layer 14 at intervals, so that the energy gathering ring 10 has higher stability; in this embodiment, two cushion blocks 15 are uniformly distributed in the same air heat insulation layer 14, and the cushion blocks 15 of the air heat insulation layers 14 are vertically and correspondingly arranged, so that the stability of the energy collecting ring 10 is further improved.

The energy-gathering ring 10 further comprises a positioning body 16, the positioning body 16 penetrates through the lower layer body 11, the cushion block 15 and the middle layer body 12 and then abuts against the upper layer body 13, and one end, extending out of the lower layer body 11, of the positioning body 16 is bent towards the lower surface of the lower layer body 11 and fixedly connected with the lower surface. By fixing the positioning body 16 on the lower body 11 and inserting the middle body 12, the upper body 13 and the cushion block 15 into the positioning body 16, the middle body 12, the upper body 13 and the cushion block 15 are prevented from moving axially or radially relative to the lower body 11, and the stability of the whole energy collecting ring 10 in the using process is improved.

The middle layer body 12 includes a middle layer bottom plate 121 and a middle layer side plate 122 which are both annular, the middle layer bottom plate 121 is a horizontal plate, the middle layer side plate 122 gradually extends upwards and outwards from an inner ring to an outer ring thereof, and an inner ring of the middle layer side plate 122 is connected with an outer ring of the middle layer bottom plate 121. The middle layer body 12 is similar to the upper layer body 13 and the lower layer body 11 in structure, on one hand, the middle layer body 12 is favorable to being placed between the upper layer body 13 and the lower layer body 11, on the other hand, the middle layer side plates 122 extending outwards are also favorable to radiating heat upwards, and the energy collecting effect is improved.

The upper body 13 includes an upper bottom plate 131 and an upper side plate 132, both of which are annular, an inner ring of the upper side plate 132 is connected to an outer ring of the upper bottom plate 131, and the upper side plate 132 gradually extends upward and outward from the inner ring to the outer ring. The outwardly extending upper deck side 132 facilitates upward heat radiation and improves energy collection.

The upper side plate 132 includes a corner portion 1321 and a side portion 1322, the corner portion 1321 is interposed between two adjacent side portions 1322, and the pan support 17 is provided at a center position of the side portion 1322. Pot support 17 is used for supporting the pan that gathers energy and enclose 10 tops, because the central point of limit 1322 puts the position nearest from the furnace end, and the convection heat transfer route is shorter in high temperature flue gas and the pot, and the heat can not make full use of, leads to the exhaust gas temperature too high easily, increases calorific loss, and sets up pot support 17 here, and pot support 17 can play the effect of blockking, reduces the high temperature flue gas volume on this position route to reduce the loss of discharging fume.

The outer ring of the upper body 13 has an annular outer positioning groove 135 with a downward opening, and the outer ring of the lower body 11 is positioned in the outer positioning groove 135. The outer positioning slot 135 is used for positioning and accommodating the outer ring edge of the lower body 11, so as to prevent the overflow liquid from entering the annular cavity 18. In the present embodiment, the outer positioning groove 135 is provided at the outer edge of the upper side plate 132.

The inner ring of the upper body 13 has an annular inner positioning groove 136 with a downward opening, and the inner ring of the lower body 11 is positioned in the inner positioning groove 136. The inner positioning slot 136 is used for positioning and accommodating the inner ring edge of the lower body 11, so as to prevent the overflow liquid from entering the annular cavity 18. The inner ring of the upper body 13 protrudes upward to form an annular convex ring. In this embodiment, the protruding ring and the inner positioning groove 136 are the same structure. A raised ring or inner detent 136 is provided on the inner edge of the upper base plate 131.

The lower surface of the lower layer 11 has a plurality of legs 111 protruding downward. The lower body 11 is usually placed on the liquid containing disc, and the downwardly protruding support legs 111 are provided to leave a secondary air inlet between the lower surface of the lower body 11 and the liquid containing disc, so as to facilitate flame combustion.

The lower surface of the lower body 11 has at least one set of heat exchange enhancement structures 112, the heat exchange enhancement structures 112 include a plurality of strip-shaped protrusions 113 arranged at intervals, and the strip-shaped protrusions 113 extend outward from a position close to the center of the lower body 11. The heat of the lower body 11 is transferred to the secondary air required for combustion through the lower surface, and the strip-shaped convex blocks 113 increase the contact area between the secondary air and the lower surface of the lower body 11, thereby enhancing the heat convection, reducing the heat loss and enhancing the combustion.

The outer contour shape of the energy gathering ring 10 may be a polygon having four or more sides.

In this embodiment, the energy collecting ring 10 is square, four corners of the lower layer 11 are respectively provided with a downward protruding leg 111, and a group of heat exchange enhancing structures 112 is disposed between adjacent legs 111. Compared with the traditional circular energy collecting ring 10, the square energy collecting ring 10 has the advantages that the side length of the rectangle is equal to the circular diameter, the diagonal length of the rectangle is larger than the circular diameter, the path of the high-temperature flue gas generated by the combustion of the furnace end and the convection heat exchange of the bottom of the boiler in the diagonal direction is longer, the boiler can be heated by utilizing the combustion heat more fully, the smoke exhaust temperature is reduced, and therefore the heat loss is reduced.

The number of the middle layer bodies 12 is two. The middle layer 12 is made of metal plate. The air insulation layer 14 is filled with insulation material, which further improves and reduces heat conduction between the layers and improves the insulation effect.

Both the upper and lower surfaces of the middle layer 12 are coated with a low emissivity coating. The heat can be constantly reflected in the air heat insulation layer 14 limited by two adjacent middle layer bodies 12, and the structure that the air heat insulation layer 14 and the mirror reflection layer are coupled and arranged can greatly reduce the heat loss and improve the heat efficiency of the combustor.

In an alternative embodiment, the middle layer 12 is coated with a low emissivity coating only on the upper surface, and the upper surface of the middle layer 12 acts as a specularly reflective layer capable of reflecting infrared radiation transmitted above, reducing radiative heat loss.

In an alternative embodiment, the upper surface of the middle layer 12 is a polished surface plated finish. The polished surface also has a specular reflection effect. In an alternative embodiment, both the upper and lower surfaces of the middle layer 12 are polished or plated. The polished surface or the electroplated surface also has the effect of specular reflection.

The embodiment also provides a stove burner 100 which comprises the energy gathering ring 10. The energy gathering ring 10 is adopted in the cooker burner 100, and accordingly the energy gathering ring has the advantages of effectively reducing heat conduction among layers, reducing loss of heat from the upper layer 13 to the lower layer 11, strengthening heat absorption of a cooker and having a better energy gathering effect of the energy gathering ring 10.

The stove burner 100 comprises a fire cover, the fire cover is positioned in the energy gathering ring 10, a blocking plate is arranged at the position of the fire cover corresponding to the pot support 17 of the energy gathering ring 10, on one hand, the blocking plate can block flames to directly ablate the pot support 17, on the other hand, as the pot support 17 is arranged at the central position of the edge 1322, the blocking plate and the pot support 17 can play a role in blocking, the high-temperature smoke amount of the position path is reduced, and therefore smoke exhaust loss is reduced.

Example 2

The embodiment provides a power collecting ring 10 for a stove burner 100. As shown in fig. 5, the energy concentrating ring 10 of the present embodiment is substantially identical to the structure of embodiment 1, except that: the outer ring of the upper side plate 132 of the present embodiment has an annular horizontal portion 133, and the position of the horizontal portion 133 corresponding to the side portion 1322 has a protruding block 134 protruding upward, and the protruding block 134 is used for guiding the smoke to the corner portion 1321 of the upper side plate 132. The protruding blocks 134 are arranged on the horizontal part 133, so that the area of a flue gas flow channel of the horizontal part 133 corresponding to the area of the side part 1322 is reduced, the exhaust resistance of the area is enhanced, the amount of flue gas flowing through the area is reduced, the flue gas is forced to flow out from the four corner parts 1321, the heat absorption of the cookware is enhanced, meanwhile, the airflow outflow speed of the protruding blocks 134 is improved due to the small flow area, and the heat exchange capacity is also enhanced.

Example 3

The present embodiment also provides a cooktop burner 100 comprising a concentrator ring 10 as described in any of the above embodiments. The energy gathering ring 10 is adopted in the cooker burner 100, and accordingly the energy gathering ring has the advantages of effectively reducing heat conduction among layers, reducing loss of heat from the upper layer 13 to the lower layer 11, strengthening heat absorption of a cooker and having a better energy gathering effect of the energy gathering ring 10.

While specific embodiments of the invention have been described above, it will be understood by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes or modifications to these embodiments may be made by those skilled in the art without departing from the principle and spirit of this invention, and these changes and modifications are within the scope of this invention.

Claims (10)

1. A power ring for a cooktop burner, comprising:

the annular lower layer body is provided with an annular cavity with an upward opening;

the annular upper body is coaxial with the lower body and covers the opening of the annular cavity, the upper body comprises an annular upper bottom plate and an annular upper side plate, the upper side plate comprises a corner part and an edge part, the corner part is clamped between two adjacent edge parts, the outer ring of the upper side plate is provided with an annular horizontal part, the horizontal part is provided with a convex block protruding upwards, and the convex block is used for guiding smoke to the corner of the horizontal part;

the middle layer body is fixed in the annular cavity, and a plurality of annular air heat insulation layers which are distributed up and down are isolated between the lower layer body and the upper layer body;

the energy gathering ring is square, four corners of the lower layer body are respectively provided with downward protruding support legs, and a group of heat exchange strengthening structures are arranged between the adjacent support legs.

2. The energy concentrating ring of claim 1, further comprising a spacer block, wherein the adjacent upper and middle layers, the adjacent middle layers and the adjacent middle and lower layers are connected by the spacer block respectively.

3. The energy gathering ring as claimed in claim 2, further comprising a positioning body, wherein the positioning body passes through the lower body, the cushion block and the middle body and then abuts against the upper body, and one end of the positioning body, which extends out of the lower body, is bent towards and fixedly connected with the lower surface of the lower body.

4. The energy gathering ring as claimed in claim 1, wherein the middle layer body comprises a middle layer bottom plate and a middle layer side plate which are both annular, the middle layer bottom plate is a horizontal plate, the middle layer side plate gradually extends upwards and outwards from the inner ring to the outer ring of the middle layer side plate, and the inner ring of the middle layer side plate is connected with the outer ring of the middle layer bottom plate.

5. The energy concentrating ring of claim 1, wherein the inner ring of the upper side plate is connected with the outer ring of the upper base plate, and the upper side plate gradually extends upward and outward from the inner ring to the outer ring.

6. The shaped charge ring of claim 5,

a pot support is arranged at the central position of the edge part; and/or the presence of a gas in the gas,

the outer ring of the upper layer body is provided with an annular outer positioning groove with a downward opening, and the outer ring of the lower layer body is positioned in the outer positioning groove; and/or the presence of a gas in the atmosphere,

the inner ring of the upper layer body is provided with an annular inner positioning groove with a downward opening, and the inner ring of the lower layer body is positioned in the inner positioning groove; and/or the presence of a gas in the gas,

the inner ring of the upper body protrudes upwards to form an annular convex ring.

7. The energy concentrating ring of claim 1, wherein the lower surface of the lower body has a plurality of downwardly protruding legs.

8. The energy concentrating ring of claim 1, wherein the heat exchange enhancing structure comprises a plurality of spaced apart raised bar-like protrusions extending outwardly from a location proximate the center of the lower body.

9. The energy concentrating ring according to any one of claims 1-8, wherein the number of the middle layers is two;

and/or the middle layer body is made of a metal plate;

and/or the air heat insulation layer is filled with heat insulation materials;

and/or the distance between the adjacent middle layer bodies ranges from 3mm to 10mm;

and/or the upper surface of the middle layer body is coated with a low-emissivity coating, or the upper surface of the middle layer body is a polished surface or an electroplated smooth surface;

and/or the lower surface of the middle layer body is coated with a low-emissivity coating, or the lower surface of the middle layer body is a polished surface or an electroplated smooth surface;

and/or the shape of the outer contour of the energy gathering ring is a polygon with the number of sides being more than or equal to four.

10. A cooktop burner, characterized in that it comprises a shaped ring according to any of claims 1-9.

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