CN112344396A

CN112344396A - Pot bracket component and infrared burner

Info

Publication number: CN112344396A
Application number: CN202011037861.9A
Authority: CN
Inventors: 刘凯; 陈琦; 卢华枝; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-02-09

Abstract

The invention discloses a pot support assembly and an infrared burner, wherein the pot support assembly is provided with a heat insulation cavity and/or an air channel, the heat insulation cavity is positioned above or below the air channel, and the air channel penetrates through the outer side wall and the inner side wall of the pot support assembly. According to the pot support component, the heat absorption is reduced and the downward conduction heat is reduced by arranging the heat insulation cavity, and the secondary air flowing through the pot support component is preheated by arranging the air channel, so that the heat utilization rate of the pot support component is improved, and the heat efficiency of an infrared burner is improved.

Description

Pot bracket component and infrared burner

Technical Field

The invention relates to the technical field of cooking utensils, in particular to a pot support assembly and an infrared burner.

Background

The infrared range is popular in the market due to better heating uniformity during cooking, lower CO emission in tail gas and higher thermal efficiency, but the infrared range loses advantages in the aspect of thermal efficiency gradually along with the improvement of the thermal efficiency of the atmospheric type cooker in recent years.

The pot support that the area was gathered hot plate structure is the effective means that improves civilian gas utensil thermal efficiency, but the heat transfer mode of infrared kitchen uses the heat radiation to give first place to, adopt traditional area to gather the mode of hot plate pot support, the effect of improving the thermal efficiency is inferior to the atmospheric gas kitchen, the pot support temperature of infrared kitchen is compared the pot support temperature of atmospheric gas kitchen and is higher, the pot support is all more from the heat that high temperature flue gas department absorbed when the heat of pot bottom to pot support radiation and convection heat transfer, and this kind of pot support of bigger area has increaseed thermal scattering and disappearing, the promotion of restriction thermal efficiency. Therefore, how to reduce the heat absorbed by the pan support and utilize the heat of the pan support is an effective method for improving the thermal efficiency of the infrared burner.

Disclosure of Invention

The invention aims to solve at least one of the problems in the prior art to a certain extent, and therefore the invention provides a pot support assembly which reduces heat absorption and downward heat conduction by arranging a heat insulation cavity, and preheats secondary air flowing through the pot support assembly by arranging an air channel, so that the heat utilization rate of the pot support assembly is improved, and the improvement of the heat efficiency of an infrared burner is facilitated.

The invention also provides an infrared burner with the pot support assembly.

According to the pot support assembly that provides above-mentioned, it realizes through following technical scheme:

a pot support assembly, pot support assembly is equipped with thermal-insulated chamber and/or air duct, thermal-insulated chamber is located air duct's top or below, air duct runs through pot support assembly's lateral wall and inside wall.

In some embodiments, the pan support assembly comprises a base and a support frame, the support frame comprises a heat collecting plate and at least three support legs, the at least three support legs are uniformly arranged on the top surface of the heat collecting plate at intervals along the circumferential direction, and the heat collecting plate is connected to the top of the base; the heat insulation cavity is formed between the heat collection plate and the base, and/or the air channel is arranged on the base or the heat collection plate.

In some embodiments, the base is provided with an upper groove which is opened upwards, and the upper groove and the bottom of the heat collecting plate jointly define the heat insulation cavity; or the heat collecting disc is provided with a lower groove with a downward opening, and the lower groove and the top of the base jointly define the heat insulation cavity; or the base is provided with an upper groove with an upward opening, the heat collecting disc is provided with a lower groove with a downward opening, and the lower groove is matched with the upper groove and defines the heat insulation cavity together.

In some embodiments, the base is provided with a plurality of protrusions extending upwards at intervals along the circumferential direction, the protrusions abut against the bottom of the heat collecting disc, so that a gap H is formed at the matching position of the heat collecting disc and the base, and the gap H is communicated with the heat insulation cavity; or a plurality of downward extending lugs are arranged at the bottom of the heat collecting disc at intervals along the circumferential direction and are abutted to the top of the base, so that a gap H is formed at the matching position of the heat collecting disc and the base, and the gap H is communicated with the heat insulation cavity.

In some embodiments, a plurality of positioning portions extending downwards are arranged at intervals at the bottom of the heat collecting plate, and the positioning portions extend into the upper groove and abut against the bottom of the upper groove.

In some embodiments, the pot support assembly comprises a base and a support frame for supporting a pot, the support frame comprises at least three support legs, the at least three support legs are arranged at the top of the base at even intervals along the circumferential direction, and the base is provided with the air channel penetrating through the inner side wall and the outer side wall of the base.

In some embodiments, the base includes a base body and a plurality of supporting legs, the plurality of supporting legs are fixedly connected to the bottom of the base body, and the base body is provided with the air channel penetrating through the inner and outer sidewalls thereof.

In some embodiments, the base body includes an upper base, a lower base and a plurality of connecting ribs, the upper base is disposed above the lower base and connected to the supporting frame, the plurality of connecting ribs are disposed between the upper base and the lower base at intervals, and two adjacent connecting ribs, the upper base and the lower base together enclose and form the air channel.

In some embodiments, the connection rib is obliquely arranged in a radial direction or a circumferential direction, and is integrally formed with the upper base or the lower base.

According to the infrared burner provided by the above, the following technical scheme is adopted to realize the following:

the utility model provides an infrared burner, includes furnace end and burning body subassembly, burning body subassembly set up in the top of furnace end is connected the furnace end, wherein still include as above a pot support subassembly, pot support subassembly set up in the periphery of burning body subassembly pot support subassembly with be formed with opening annular air flue up between the burning body subassembly, annular air flue intercommunication air channel's export.

Compared with the prior art, the invention at least comprises the following beneficial effects:

1. according to the pot support assembly, the heat insulation cavity is formed, so that the radiant heat absorbed by the pot support assembly is reduced, the heat conducted from the upper part to the lower part of the heat insulation cavity is reduced, and the temperature rise of the part, located below the heat insulation cavity, of the pot support assembly is further reduced;

2. the pot bracket component is additionally provided with the air channel below the heat insulation cavity, so that secondary air flowing through the air channel is preheated, the heat utilization rate of the pot bracket component is improved, the combustion of the outer ring fire of the infrared burner is ensured to be more sufficient, and the heat efficiency of the infrared burner is further improved.

Drawings

Fig. 1 is an exploded view of a pot support assembly in accordance with example 1 of the present invention;

FIG. 2 is a schematic structural view of a support frame in embodiment 1 of the present invention;

FIG. 3 is an exploded view of a base in example 1 of the present invention;

fig. 4 is a sectional view of a pot support assembly in embodiment 1 of the present invention;

FIG. 5 is a cross-sectional view of another angle of the pot support assembly in accordance with embodiment 1 of the present invention;

fig. 6 is a partially enlarged view of a portion a in fig. 5;

FIG. 7 is a sectional view of an infrared burner in embodiment 6 of the present invention;

fig. 8 is a partially enlarged view of a portion B in fig. 7.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.

Example 1

Referring to fig. 1 to 6, the present embodiment provides a pot support assembly for being mounted to the outer periphery of a burner body assembly in an infrared burner to support a pot. The pot support assembly 100 is provided with an insulation chamber 10 and/or an air passage 20, the insulation chamber 10 is located above or below the air passage 20, and the air passage 20 penetrates through the outer side wall and the inner side wall of the pot support assembly. Preferably, the pan support assembly 100 of the present embodiment is provided with a heat insulation chamber 10 and an air channel 20, the heat insulation chamber 10 is located above the air channel 20, and the heat insulation chamber 10 is used for reducing heat conduction of the support frame 2 to the lower side of the base 1, thereby reducing heat loss of the support frame 2. When the outside atmosphere of pot bracket subassembly 100 is pressed people's air passage 20, can preheat by air passage 20, then act as the secondary air and supply to the combustion area of infrared burner, and then guarantee that infrared burner's burning is more abundant, further promote the thermal efficiency.

As can be seen, in the pan support assembly of the present embodiment, the heat insulation cavity 10 is disposed on the pan support assembly 100, so that the radiation heat absorbed by the pan support assembly 100 is reduced, and meanwhile, the heat conducted from the upper side to the lower side of the heat insulation cavity 10 is reduced, and the temperature rise of the portion of the pan support assembly 100 located below the heat insulation cavity 10 is reduced; in addition, the pot support assembly 100 is additionally provided with the air passage 20 below the heat insulation cavity 10, so that secondary air flowing through the air passage 20 is preheated, the heat utilization rate of the pot support assembly 200 is improved, the combustion of the outer ring fire of the infrared burner is ensured to be more sufficient, and the heat efficiency of the infrared burner is further improved.

Referring to fig. 1-2 and 4-6, further, the pot support assembly 100 includes a base 1 and a support frame 2, wherein the support frame 2 includes a heat collecting tray 21 and at least three support legs 22, and the at least three support legs 22 are uniformly spaced on the top surface of the heat collecting tray 21 along the circumferential direction for stably supporting the pot. The heat collecting disc 21 is connected to the top of the base 1, and the heat collecting disc 21 is used for being installed on the periphery of a combustion body assembly in the infrared combustor, so that under the action of the heat collecting disc 21, on one hand, the range of a high-temperature flue gas area of the infrared combustor can be enlarged, the temperature of the high-temperature flue gas area can be effectively increased, the gas combustion is more sufficient, and the emission of CO in combustion tail gas is remarkably reduced; on the other hand makes the heat gather in the bottom of a boiler, strengthens the heat convection of high temperature flue gas and bottom of a boiler to further improve infrared burner's thermal efficiency, promote user's culinary art and experience.

Preferably, an insulating cavity 10 is formed between the heat collecting plate 21 and the base 1 to reduce the heat conducted from the heat collecting plate 21 to the base 1 and reduce the loss on the heat collecting plate 21. More preferably, the base 1 is provided with air passages 20 penetrating through both inner and outer sidewalls in a radial direction thereof. Therefore, the pot support assembly 100 has three functions of gathering heat energy of the heat gathering plate 21, reducing heat loss of the heat insulation cavity 10 and recovering heat through the air passage 20, besides the function of supporting the pot, and the added value of the pot support assembly 100 is remarkably improved.

Specifically, the insulating cavity 10 is formed in the following three ways: in the first scheme, the base 1 is provided with an upper groove 101 which is opened upwards, and when the heat collecting plate 21 is connected with the base 1, the upper groove 101 and the bottom of the heat collecting plate 21 jointly define the heat insulation cavity 10. In the second scheme, the heat collecting plate 21 is provided with a lower groove 201 which is open downwards, and when the heat collecting plate 21 is connected with the base plate 1, the lower groove 201 and the top of the base plate 1 jointly define the heat insulation cavity 10. In the third scheme, the base 1 is provided with an upper groove 101 which is open upwards, the heat collecting disc 21 is provided with a lower groove 201 which is open downwards, and when the heat collecting disc 21 is connected with the base 1, the lower groove 201 is matched with the upper groove 101 and defines the heat insulation cavity 10 together.

In this embodiment, a third scheme is adopted as an example to ensure that the heat insulation cavity 10 has a sufficiently large volume, further improve the heat insulation effect, and further reduce the heat conducted from the heat accumulation plate 21 to the base 1. Referring to fig. 2, specifically, the radially inner side of the heat collecting plate 21 is integrally formed with an inward flange 203 extending toward the base 1, the radially outer side of the heat collecting plate 21 is integrally formed with an outward flange 204 extending toward the base 1, and the outward flange 204, the bottom surface of the heat collecting plate 21 and the inward flange 203 together enclose to form a lower groove 201. Referring to fig. 4, when the heat collecting plate 21 is mounted on the base 1, the upper groove 101 extends into the lower groove 201, the inner flange 203 of the lower groove 201 abuts against the inner side wall of the upper groove 101, and the outer flange 204 abuts against the outer side wall of the upper groove 101 with a gap therebetween.

Referring to fig. 2 and 4, preferably, a plurality of positioning portions 202 extending downwards and located in the lower groove 201 are provided at intervals at the bottom of the heat collecting plate 21, and the positioning portions 202 extend into the upper groove 101 and abut against the bottom of the upper groove 101. In this embodiment, the quantity of location portion 202 is 4, and 4 location portions 202 are arranged along the even interval of the circumference direction of low groove 201, so can promote the installation steadiness of heat collecting plate 21, and then guarantee that support frame 2 can the stable support pan.

Preferably, the quantity of stabilizer blade 22 is 4, and 4 stabilizer blades 22 set up in the top surface of gathering hot dish 21 along the even interval of circumferential direction, and the one end of stabilizer blade 22 with gather hot dish 21 integrated into one piece, the other end orientation gathers the center pin direction extension of hot dish 21, like this, the quick machine-shaping of stabilizer blade 22 of being convenient for to guarantee that stabilizer blade 22 is connected firmly reliably with gathering hot dish 21, and then promote the stability that support frame 2 supported the pan.

Referring to fig. 1 and fig. 4-6, specifically, the base 1 is provided with a plurality of protrusions 102 extending upward at intervals in the circumferential direction, the number of the protrusions 102 in this embodiment is 8, the 8 protrusions 102 are uniformly arranged on the upper end surface of the outer side wall of the upper groove 101 at intervals in the circumferential direction, each protrusion 102 extends into the lower groove 201 and abuts against the bottom surface of the heat collecting tray 21, so that a gap H is formed at the matching position of the heat collecting tray 21 and the base 1, and the gap H communicates with the heat insulating cavity 10. Therefore, the contact area between the heat collecting plate 21 and the base 1 is greatly reduced through the 8 protrusions 102, the heat conducted from the heat collecting plate 21 to the base 1 in the support frame 2 is further reduced, and the heat loss of the heat collecting plate 21 is remarkably reduced. The gap H in this embodiment specifically refers to the distance between the upper end surface of the outer side wall of the upper groove 101 and the top surface of the lower groove 201 (i.e., the bottom surface of the heat collecting plate 21). In addition, because a gap is reserved between the outward flange 204 of the lower groove 201 and the outer side wall of the lower groove 201, the heat insulation cavity 10 is communicated with the external atmosphere sequentially through the gap H and the gap, so that the external air can be convected with the heat in the heat insulation cavity 10.

In other embodiments, the protrusions 102 may also be omitted and replaced as follows: the bottom of the heat collecting disc 21 is provided with a plurality of projections (not shown in the figure) which extend downwards and are positioned in the lower groove 201 at intervals along the circumferential direction, the projections extend into the upper groove 101 and abut against the bottom surface of the upper groove 101 (namely the top of the base 1), and therefore a gap H communicated with the heat insulation cavity 10 is formed at the matching position of the heat collecting disc 21 and the base 1.

Referring to fig. 3-5, further, the base 1 includes a base body 11 and a plurality of supporting legs 12, the plurality of supporting legs 12 are fixedly connected to the bottom of the base body 11, and the base body 11 is provided with an air passage 20 penetrating through the inner and outer sidewalls of the base body 11 in the radial direction. Therefore, the air is preheated when flowing through the air channel 20, the preheated air flows into the combustion area of the infrared combustor to serve as secondary air, the heat absorbed by the base body 11 is fully recovered, the gas is more fully combusted, and the heat efficiency of the combustor is further improved.

Specifically, the base body 11 includes an upper base 111, a lower base 112 and a plurality of connecting ribs 113, the upper base 111 is disposed above the lower base 112 and connected to the heat collecting tray 21 of the support frame 2, the upper groove 101 is disposed at the top of the upper base 111, and the protrusion 102 is integrally formed on the upper end surface of the outer side wall of the upper groove 101, so that when the upper base 111 is connected to the heat collecting tray 21, the upper groove 101 located on the upper base 111 and the lower groove 201 of the heat collecting tray 21 define the heat insulation cavity 10 together, and the heat conducted by the heat collecting tray 21 to the lower base 112 is reduced. In addition, a plurality of connecting ribs 113 are arranged between the upper base 111 and the lower base 112 at intervals, and two adjacent connecting ribs 113, the upper base 111 and the lower base 112 jointly enclose to form the air channel 20, so that when external cold air flows through the air channel 20, the external cold air can exchange heat with the upper base 111 and the lower base 112, the cold air is preheated, and the heat of the upper base 111 and the lower base 112 is fully recovered.

Preferably, the lower base 112 includes a bottom surface 1121 and a side surface 1122 having a ring shape, the lower side of the side surface 1122 is integrally formed with the radially outer side of the bottom surface 1121, and the side surface 1122 has a reverse taper shape. The number of the connection ribs 113 is four, and the four connection ribs 113 are uniformly arranged at intervals in the circumferential direction, so that the sectional area of the formed air passage 20 is large enough, and the cold air can pass through and the heat exchange area can be enlarged. Each connecting rib 113 is obliquely arranged along the radial direction or the circumferential direction to ensure that the inlet and the outlet of the formed air channel 20 are positioned on the inner side wall and the outer side wall of the base 1 in the radial direction, thereby ensuring that the preheated air can be used as secondary air required by combustion of the infrared burner. In the present embodiment, the connecting rib 113 is arranged along the radial direction and is integrally formed with the top of the lower base 112, and of course, the connecting rib 113 may also be integrally formed along the radial direction and with the bottom of the upper base 111, so that the connecting rib 113 can be easily and quickly formed, and the connecting process between the connecting rib 113 and the upper base 111 or the lower base 112 is saved.

More preferably, the width of the connecting rib 113 in the vertical direction is 0.5-4 mm, so that the width of the formed air channel 20 in the vertical direction is also 0.5-4 mm, the air channel 20 is ensured to have a large enough sectional area, and the heat exchange effect is improved.

Referring to fig. 3-4, in this embodiment, the supporting legs 12 are hollow structures, the number of the supporting legs is four, four supporting legs 12 are uniformly arranged at intervals at the bottom of the lower base 112 along the circumferential direction, and the supporting legs 12 and the lower base 112 are integrally formed, so that the supporting legs 12 can be quickly formed, the base body 11 can be stably supported by all the supporting legs 12, and in addition, the supporting legs 12 are designed to be hollow structures, which is beneficial to reducing the overall weight of the pot support assembly 100 and reducing the heat of the lower base 112 absorbed by the supporting legs 12.

Example 2

This embodiment is different from embodiment 1 in that the heat collecting plate 21 is omitted. Specifically, the supporting frame 2 only includes at least three supporting legs 22, the at least three supporting legs 22 are uniformly arranged at intervals along the circumferential direction at the top of the base 1, one end of each supporting leg 22 is integrally formed with the base 1, the other end of each supporting leg extends towards the central axis direction of the base 1, and other parts are the same as those in embodiment 1.

It can be seen that, in the present embodiment, by omitting the heat collecting plate 21 and integrating the supporting legs 22 on the top of the base 1, not only the overall structure of the pan support assembly 100 is simpler, but also the amount of heat absorbed by the pan support assembly 100 can be reduced, thereby reducing the heat loss of the infrared burner.

Example 3

This embodiment is different from embodiment 1 in that the heat insulating chamber 10 is omitted. Specifically, the heat collecting plate 21 is integrated with the upper base 111, or the heat collecting plate 21 is fixedly connected to the upper base 111, and the other portions are the same as those in embodiment 1. Preferably, the present embodiment adopts a scheme of directly omitting the heat collecting plate 21 and replacing the upper base 111 with the heat collecting plate 21

It can be seen that, in the present embodiment, by integrating the heat collecting plate 21 on the upper base 111, on one hand, heat collection by the heat collecting plate 21 is achieved, and the air channel 20 is adopted to preheat air, so as to improve the heat recovery rate of the pan support assembly 100; on the other hand, the pot support assembly 100 is simpler in overall structure, higher in machining and forming efficiency, lower in cost and capable of saving manufacturing materials, and meanwhile, the support 2 is stably connected with the base 1.

Example 4

This embodiment is different from embodiment 1 in that the lower base 112 and the connecting rib 113 are omitted. Specifically, the base 1 includes only a base body 11 and supporting legs 12, the base body 11 is an upper base 111, the supporting legs 12 are fixedly connected to the bottom of the upper base 111, and other portions are the same as those in embodiment 1.

It can be seen that, in the embodiment, by omitting the lower base 112 and the connecting rib 113 and integrating the supporting leg 12 on the top of the upper base 111, not only the overall structure of the base 1 and the pan support assembly 100 is simpler, the manufacturing material is saved, the cost of the pan support assembly 100 is lower, but also the heat transmitted from the heat collecting plate 21 to the base 1 can be reduced, and the heat loss of the heat collecting plate 21 is further reduced.

Example 5

This embodiment is different from embodiment 1 in that the upper base 111 is omitted. Specifically, the base body 11 only includes the lower base 112 and the connecting rib 113, the lower base 112 is connected to the bottom of the heat collecting tray 21 through the connecting rib 113, and two adjacent connecting ribs 113, the lower base 112 and the heat collecting tray 21 together enclose to form the air channel 20, and other parts are the same as those in embodiment 1.

It can be seen that this embodiment is through having saved upper base 111 to with lower base 112 through the connection of splice bar 113 connection in the bottom of gathering hot dish 21, not only make the overall structure of base 1 and pot bracket component 100 simpler, can also realize retrieving the heat of pot bracket component 100 and preheat the air, promote the heat utilization ratio of pot bracket component 100, and then do benefit to the burning sufficiency and the thermal efficiency that promote the infrared burner.

Example 6

Referring to fig. 7-8, the present embodiment provides an infrared burner, which includes a burner 200 and a burner assembly 300, wherein the burner assembly 300 is disposed above the burner 200 and connected to the burner 200, and further includes a pot support assembly as described in embodiment 1, the pot support assembly 100 is disposed at the periphery of the burner assembly 300, an annular air channel 400 with an upward opening is formed between the pot support assembly 100 and the burner assembly 300, and the annular air channel 400 is communicated with an outlet of the air channel 20.

Specifically, the burner body assembly 300 includes a gas distribution plate 301, the pan support assembly 100 is disposed at the periphery of the gas distribution plate 301, and the radial inner side of the lower base 112 in the pan support assembly 100 abuts against the outer side wall of the gas distribution plate 301, so as to prevent the preheated air from flowing out downwards from the matching position of the lower base 112 and the outer side wall of the gas distribution plate 301. In the present embodiment, the annular air duct 400 is formed by enclosing the radially inner side of the top surface of the lower base 112, the radially inner side wall of the upper base 111, the radially inner side wall of the heat collecting plate 21 and the outer side wall of the air distributing plate 301.

It can be seen that, by arranging the pan support assembly 100 at the periphery of the burner body assembly 300 and forming an annular air passage 400 with an upward opening between the pan support assembly 100 and the burner body assembly 300, the annular air passage 400 is communicated with the outlet of the air passage 20 in the pan support assembly 100, referring to fig. 8, when cold air flows through the air passage 20, the cold air is preheated, and the preheated air is supplied to the outer ring area of the burner body assembly 300 through the annular air passage 400, so that the supply of preheated secondary air to the outer ring of the infrared burner is realized, the combustion sufficiency is further improved, and the thermal efficiency of the infrared burner is further remarkably improved.

In addition, the heat collecting disc 21 of the boiler support assembly 100 is used for expanding the range of a high-temperature flue gas area of the infrared combustor, effectively increasing the temperature of the high-temperature flue gas area and enabling gas to be combusted more sufficiently, so that the emission of CO in combustion tail gas is obviously reduced; on the other hand, heat is gathered at the bottom of the boiler, and the heat convection between the high-temperature flue gas and the bottom of the boiler is enhanced, so that the heat efficiency of the infrared burner is further improved.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims

1. A pot support assembly, characterized in that it is provided with a heat insulating cavity (10) and/or air passages (20), said heat insulating cavity (10) being located above or below said air passages (20), said air passages (20) running through the outer and inner side walls of said pot support assembly.

2. The pan support assembly according to claim 1, characterized in that the pan support assembly comprises a base (1) and a support frame (2), the support frame (2) comprises a heat collecting plate (21) and at least three support legs (22), the at least three support legs (22) are arranged on the top surface of the heat collecting plate (21) at equal intervals along the circumferential direction, and the heat collecting plate (21) is connected to the top of the base (1); the heat insulation cavity (10) is formed between the heat collection plate (21) and the base (1), and/or the air channel (20) is arranged on the base (1) or the heat collection plate (21).

3. The pan support assembly according to claim 2, characterized in that the base (1) is provided with an upper groove (101) which is open upwards, the upper groove (101) and the bottom of the heat collecting plate (21) jointly defining the heat insulating chamber (10);

or the heat collecting plate (21) is provided with a lower groove (201) with a downward opening, and the lower groove (201) and the top of the base (1) jointly define the heat insulation cavity (10);

or the base (1) is provided with an upper groove (101) with an upward opening, the heat collecting plate (21) is provided with a lower groove (201) with a downward opening, and the lower groove (201) is matched with the upper groove (101) and jointly defines the heat insulation cavity (10).

4. The pan support assembly according to claim 3, wherein the base (1) is provided with a plurality of protrusions (102) extending upwards at intervals along the circumferential direction, the protrusions (102) abut against the bottom of the heat collecting plate (21), so that a gap H is formed at the matching position of the heat collecting plate (21) and the base (1), and the gap H is communicated with the heat insulation cavity (10);

or a plurality of downward extending lugs are arranged at the bottom of the heat collecting disc (21) at intervals along the circumferential direction and abut against the top of the base (1), so that a gap H is formed at the matching position of the heat collecting disc (21) and the base (1), and the gap H is communicated with the heat insulation cavity (10).

5. The pan support assembly according to claim 3, wherein a plurality of positioning portions (202) extending downwards are arranged at intervals at the bottom of the heat collecting plate (21), and the positioning portions (202) extend into the upper groove (101) and abut against the bottom of the upper groove (101).

6. The pot rack assembly according to claim 1, characterized in that the pot rack assembly comprises a base (1) and a supporting rack (2) for supporting a pot, the supporting rack (2) comprises at least three supporting legs (22), the at least three supporting legs (22) are arranged on the top of the base (1) at even intervals along the circumferential direction, and the air passages (20) penetrating through the inner and outer side walls of the base (1) are arranged on the base (1).

7. The pot support assembly according to claim 2 or 6, wherein the base (1) comprises a base body (11) and a plurality of supporting legs (12), the plurality of supporting legs (12) are fixedly connected to the bottom of the base body (11), and the air channel (20) is arranged on the base body (11) and penetrates through the inner side wall and the outer side wall of the base body.

8. The pot support assembly according to claim 7, wherein the base body (11) comprises an upper base (111), a lower base (112) and a plurality of connecting ribs (113), the upper base (111) is disposed above the lower base (112) and connected to the supporting frame (2), the plurality of connecting ribs (113) are disposed between the upper base (111) and the lower base (112) at intervals, and two adjacent connecting ribs (113), the upper base (111) and the lower base (112) together enclose the air channel (20).

9. The pot support assembly according to claim 8, characterized in that the connecting rib (113) is arranged obliquely in a radial direction or a circumferential direction and is formed integrally with the upper base (111) or the lower base (112).

10. An infrared burner comprising a burner head (200) and a burner body assembly (300), said burner body assembly (300) being disposed above said burner head (200) and connected to said burner head (200), characterized in that it further comprises a pan support assembly according to any one of claims 1 to 9, said pan support assembly being disposed at the periphery of said burner body assembly (300), an annular air duct (400) opening upwards being formed between said pan support assembly and said burner body assembly (300), said annular air duct (400) communicating with the outlet of said air channel (20).