A combustion body assembly and an infrared burner thereon

Abstract

The application discloses a combustion body assembly and an upper air inlet infrared burner thereof. The combustion body assembly is provided with a gas distribution structure, which comprises a furnace head, a center cavity with upper and lower openings arranged at the center position of the furnace head, an inner ejector pipe and an outer ejector pipe arranged at the bottom of the furnace head, an inner cup body arranged at the top of the furnace head and located at the periphery of the center cavity in a detachable mode, an inner annular air cavity with an upward opening formed between the inner cup body and the center cavity, the inner annular air cavity being communicated with the inner ejector pipe, an outer disc body arranged at the top of the furnace head and located at the periphery of the inner cup body in a detachable mode, an outer annular air cavity with an upward opening formed between the outer disc body and the inner cup body, and the outer annular air cavity being communicated with the outer ejector pipe. The combustion body assembly is designed in a split mode, so that the forming and manufacturing of each component are facilitated, and the upper air inlet is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooking ranges, in particular to a combustion body assembly and an upper air inlet infrared burner thereof. BACKGROUND

[0002] Infrared ranges are popular in the market due to their good heating uniformity during cooking, low CO emission in their tail gas and high thermal efficiency, and most of the infrared burners in the market are of lower air inlet. However, for integrated products such as integrated ranges and integrated cooking centers, the injection of primary air of the gas stove nozzle is affected due to negative pressure or steam or heat dissipation airflow of the integrated products in the cavity of the range module. SUMMARY

[0003] The present application aims to at least partially solve one of the problems existing in the prior art, and for this purpose, the present application provides a combustion body assembly, which is designed in a split structure for the gas distribution structure, facilitating the molding and manufacturing of each component and realizing complete upper air inlet. The present application also provides an upper air inlet infrared burner.

[0004] According to the above-mentioned combustion body assembly, the following technical solutions are adopted:

[0005] A combustion body assembly comprises a gas distribution structure, which comprises: a burner head, provided with a central cavity with upper and lower openings at a central position of the burner head, and provided with an inner ejector pipe and an outer ejector pipe at the bottom of the burner head; an inner cup body, detachably arranged on the top of the burner head and located at the periphery of the central cavity, forming an inner ring air cavity with an upward opening between the inner cup body and the central cavity, and the inner ring air cavity being in communication with the inner ejector pipe; and an outer disc body, detachably arranged on the top of the burner head and located at the periphery of the inner cup body, forming an outer ring air cavity with an upward opening between the outer disc body and the inner cup body, and the outer ring air cavity being in communication with the outer ejector pipe.

[0006] In some embodiments, the top of the burner head is provided with an inner air inlet cavity and an inner mounting groove recessed downward and open upward, at least part of the inner ejector pipe is arranged in the inner mounting groove and integrally formed with the opposite groove walls of the inner mounting groove, and the gas outlet end of the inner ejector pipe is in communication with the inner ring air cavity through the inner air inlet cavity; and / or the top of the burner head is provided with an outer air inlet cavity and an outer mounting groove recessed downward and open upward, at least part of the outer ejector pipe is arranged in the outer mounting groove and integrally formed with the opposite groove walls of the outer mounting groove, and the gas outlet end of the outer ejector pipe is in communication with the outer ring air cavity through the outer air inlet cavity.

[0007] In some embodiments, an inner annular boss extending upwards and located outside the center cavity is integrally formed on the top of the burner head, the inner cup is sleeved on the outer side of the inner annular boss and abuts or connects with the top of the burner head; and / or an outer annular boss extending upwards is integrally formed on the outer edge of the top of the burner head, the outer disc is sleeved on the outer side of the outer annular boss, and an inwardly extending inner flange is integrally formed on the lower end of the outer disc, the inner flange is detachably connected with the burner head, and the inner flange abuts with the top of the outer annular boss.

[0008] In some embodiments, the inner cup is provided with a limiting step in the shape of a ring, the limiting step is located above the inner annular boss and abuts or has a gap with the top of the inner annular boss; and / or an outwardly extending lower flange is integrally formed on the outer edge of the lower end of the inner cup, the lower flange abuts or connects with the top of the burner head.

[0009] In some embodiments, the gas distribution structure further comprises a heat insulation plate, the heat insulation plate is arranged in the outer ring gas cavity and connected with the burner head, the heat insulation plate tightly presses the inner cup and the outer disc on the top of the burner head, and a plurality of gas passing holes are arranged on the heat insulation plate for the outer ring gas to pass through.

[0010] In some embodiments, the outer disc is provided with a support table located below the combustion plate, a flow guide disc extending along the outer disc is integrally formed on the outer edge of the heat insulation plate, the upper end of the flow guide disc is bent outwardly to form an outward flange, the outward flange is arranged on the top of the support table and abuts or connects with the support table.

[0011] In some embodiments, a combustion plate is further included, the combustion plate is clamped between the outer disc and the outer side wall of the center cavity and covers the top opening of the inner ring gas cavity and the outer ring gas cavity respectively, and the inner cup is tightly pressed on the top of the burner head by the combustion plate.

[0012] According to the above-mentioned upper air inlet infrared burner, the following technical solutions are adopted:

[0013] An upper air inlet infrared burner comprises: a base assembly provided with an inner ring gas channel and an outer ring gas channel; an above-mentioned combustion body assembly detachably mounted on the top of the base assembly, the gas inlet end of the inner ejector pipe communicates with the inner ring gas channel, and the gas inlet end of the outer ejector pipe communicates with the outer ring gas channel; and an ignition assembly detachably mounted on the base assembly, the upper end of the ignition assembly penetrates the center cavity and protrudes from the top of the combustion body assembly, and the ignition assembly can be switched between a locked position and an unlocked position.

[0014] In some embodiments, the base assembly comprises a fixing seat and a base body, the fixing seat is arranged between the base body and the burner head, the fixing seat is provided with a mounting hole and two clamping positions outside the mounting hole; the ignition assembly comprises an ignition needle, the ignition needle is movably vertically arranged in the mounting hole and is provided with a positioning rod, the positioning rod is movable between the two clamping positions.

[0015] In some embodiments, the fixing seat is further provided with a sliding groove, the two clamping positions are communicated through the sliding groove; and / or a limiting part extending upward is integrally formed on the top of the fixing seat, the limiting part is arranged close to one of the clamping positions, and the upper end of the limiting part is inserted into the central cavity upward.

[0016] In some embodiments, the ignition assembly further comprises a resilient member and a clamping ring, the clamping ring is arranged below the fixing seat and clamps the lower end of the ignition needle, the resilient member is sleeved outside the lower end of the ignition needle and clamped between the clamping ring and the fixing seat.

[0017] In some embodiments, the lower end of the fixing seat is detachably connected with the base body through a fastener, or the lower end of the fixing seat is integrally formed with the base body of the base assembly; the upper end of the fixing seat is inserted into the lower end of the central cavity in a matched mode.

[0018] In some embodiments, the upper end of the fixing seat and the lower end of the central cavity are in any one of "D" shape, oval shape or polygonal shape; and / or a positioning structure is arranged between the fixing seat and the wall of the central cavity.

[0019] In some embodiments, a first switch is further arranged on the air inlet end of the outer ring air channel, which is used for opening in a time-delayed mode when the ignition assembly is discharged for ignition, or opening immediately after successful ignition, and is also used for closing immediately or in a time-delayed mode after extinguishing.

[0020] Compared with the prior art, the present application has at least the following advantages:

[0021] 1. The combustion body assembly of the present application is designed in a split mode, which facilitates the molding and manufacturing of each part and realizes complete updraft.

[0022] 2. The heat insulation plate is arranged in the outer ring air cavity and fixedly connected with the burner head, the heat insulation plate tightly presses the inner cup body and the outer disc body on the top of the burner head, which improves the installation firmness and reliability of the inner cup body and the outer disc body, realizes the guiding of the outer ring gas, effectively blocks the heat on the lower side of the combustion plate from radiating to the lower side of the burner head, thereby reducing the temperature rise of the burner head and improving the heat exchange efficiency of the burner.

[0023] 3. The upper air inlet infrared burner of the present application, by respectively detachably mounting the ignition assembly and the combustion body assembly on the base assembly, the ignition assembly can be switched between the locked position and the unlocked position, easy to disassemble, convenient to disassemble the combustion body assembly for cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the exploded view of the combustion body assembly in embodiment 1 of the present application;

[0025] Figure 2 is the sectional view of the combustion body assembly in embodiment 1 of the present application;

[0026] Figure 3 is the structural schematic of the furnace head in embodiment 1 of the present application Figure 1 ;

[0027] Figure 4 is the structural schematic of the furnace head in embodiment 1 of the present application Figure 2 ;

[0028] Figure 5 is the structural schematic of the inner cup body and the outer disc body in embodiment 1 of the present application;

[0029] Figure 6 is the exploded view of the combustion body assembly in embodiment 2 of the present application;

[0030] Figure 7 is the sectional view of the combustion body assembly with the heat insulation plate in embodiment 2 of the present application;

[0031] Figure 8 is the structural schematic of the heat insulation plate in embodiment 2 of the present application;

[0032] Figure 9 is the structural schematic of the upper air inlet infrared burner in embodiment 3 of the present application;

[0033] Figure 10 is the sectional view of the upper air inlet infrared burner in embodiment 3 of the present application;

[0034] Figure 11 is the structural schematic of the ignition assembly mounted on the base assembly in embodiment 3 of the present application;

[0035] Figure 12 is the exploded view of the ignition assembly in embodiment 3 of the present application;

[0036] Figure 13 is the exploded view of the base assembly in embodiment 3 of the present application;

[0037] Figure 14 is the structural schematic of the fixing seat in embodiment 3 of the present application;

[0038] Figure 15is the upper air inlet infrared burner in embodiment 4 of the present application.

[0039] In the figure: 1-burner, 11-burner assembly, 111-inner ring air cavity, 112-outer ring air cavity, 113-center cavity, 1131-upper clamping groove, 12-ignition assembly, 121-discharge part, 122-flame induction part, 13-base assembly, 131-inner ring air duct, 132-outer ring air duct, 14-decorative cover; 23-first switch;

[0040] 41-stove head, 411-inner ejector pipe, 412-outer ejector pipe, 4131-inner air inlet cavity, 4132-inner mounting groove, 4141-outer air inlet cavity, 4142-outer mounting groove, 415-inner annular boss, 416-outer annular boss, 417-positioning column, 42-inner cup body, 421-limiting step, 422-lower flange edge, 43-outer disc body, 431-inner flange, 432-supporting table, 44-burning plate, 45-insulation plate, 451-vent hole, 452-flow guide part, 453-flow guide disc, 454-outer flange, 46-connector;

[0041] 51-ignition needle, 511-positioning rod, 52-elastic member, 53-clasping ring;

[0042] 61-fixed seat, 611-mounting hole, 612-clamping position, 613-slotted guide, 614-flange, 615-notch, 616-lug, 617-stop part, 62-fastening member, 63-base body, 631- accommodating groove, 632-stiffening rib, 633-threading hole, 641-inner ring nozzle, 642-outer ring nozzle. DETAILED DESCRIPTION

[0043] The following examples are used to illustrate the present application, but the present application is not limited by these examples. Modifications to the specific embodiments of the present application or equivalent replacements to some technical features are made without departing from the spirit of the present application, which should be covered in the technical solution range claimed by the present application.

[0044] Example 1

[0045] Reference Figures 1-2 The present embodiment provides a burner assembly 11, which comprises a gas distribution structure and a burning plate 44, wherein the gas distribution structure comprises a stove head 41, an inner cup body 42 and an outer disc body 43, a center cavity 113 with upper and lower openings is arranged at the center position of the stove head 41, an inner ejector pipe 411 and an outer ejector pipe 412 are arranged at the bottom of the stove head 41, and the gas distribution structure further comprises an insulation plate 45, a plurality of long strip-shaped heat dissipation holes are arranged on the insulation plate 45 in a circumferential direction.

[0046] The inner cup body 42 is detachably arranged on the furnace head 41 and located in the central cavity 113. An inner annular air cavity 111 which is open upward is formed between the inner cup body 42 and the central cavity 113. In this embodiment, the inner annular air cavity 111 is formed by the inner cup body 42, the outer peripheral wall of the central cavity 113 and the top of the furnace head 41, and the inner annular air cavity 111 is in communication with the inner ejector pipe 411. The outer disc body 43 is detachably arranged on the top of the furnace head 41 and located outside the inner cup body 42. An outer annular air cavity 112 which is open upward is formed between the outer disc body 43 and the inner cup body 42. In this embodiment, the outer annular air cavity 112 is formed by the inner cup body 42, the outer disc body 43 and the top of the furnace head 41, and the outer annular air cavity 112 is in communication with the outer ejector pipe 412.

[0047] It can be seen that, by designing the air distribution structure to include the furnace head 41, the inner cup body 42 and the outer disc body 43 which are independent of each other, the inner annular air cavity 111 is formed by the inner cup body 42, the outer peripheral wall of the central cavity 113 and the top of the furnace head 41, and the outer annular air cavity 112 is formed by the inner cup body 42, the outer disc body 43 and the top of the furnace head 41. In this way, the air distribution structure is designed in a split body manner, which facilitates the forming and manufacturing of the furnace head 41, the inner cup body 42 and the outer disc body 43, improves the yield of finished products, and enables complete updraft.

[0048] Reference Figures 3-4 Further, the top of the furnace head 41 is provided with an inner air inlet cavity 4131 which is recessed downward and open upward, and an inner mounting groove 4132. The inner air inlet cavity 4131 is arranged between the central cavity 113 and the inner cup body 42. The inner mounting groove 4132 spans the inner annular air cavity 111 and the outer annular air cavity 112. At least part of the inner ejector pipe 411 is arranged in the inner mounting groove 4132 and integrally formed with the two groove walls of the inner mounting groove. The air outlet end of the inner ejector pipe 411 is in communication with the inner annular air cavity 111 through the inner air inlet cavity 4131. The top of the furnace head 41 is provided with two outer air inlet cavities 4141 which are recessed downward and open upward, and two outer mounting grooves 4142. The two outer air inlet cavities 4141 and the two outer mounting grooves 4142 are both arranged between the inner cup body 42 and the outer disc body 43, and the two outer air inlet cavities 4141 and the two outer mounting grooves 4142 are respectively located on the opposite outer sides of the inner cup body 42. At least part of the outer ejector pipe 412 is arranged in the outer mounting groove 4142 and integrally formed with the two groove walls of the outer mounting groove. The air outlet end of the outer ejector pipe 412 is in communication with the outer annular air cavity 112 through the corresponding outer air inlet cavity 4141. In this way, the furnace head 41 and the inner and outer ejector pipes can be quickly machined and formed, and the demolding is facilitated, which is beneficial to reducing the height of the furnace head 41 in the vertical direction.

[0049] Reference Figures 1-5An inner annular boss 415 extending upwards and located outside the central cavity 113 is integrally formed on the top of the furnace head 41. The inner cup 42 is sleeved outside the inner annular boss 415 and abuts or connects with the top of the furnace head 41, so as to limit the inner cup 42 in the radial direction. In addition, a planar seal is formed between the inner cup 42 and the inner annular boss 415. Further, a limiting step 421 arranged in the circumferential direction and in the form of an annular ring is provided on the inner cup 42 and located above the inner annular boss 415 and abuts or clearance fits with the top of the inner annular boss 415. At this time, the inner annular boss 415 can lower limit the inner cup to prevent the inner cup from being extruded and deformed. In addition, an outwardly extending lower flange 422 is integrally formed on the lower end of the inner cup 42. The lower flange 422 abuts the top of the furnace head 41 to increase the contact area, so that the lower flange 422 and the top of the furnace head form a planar seal, thereby improving the sealing performance between the inner cup 42 and the top of the furnace head 41 and ensuring that the installation of the inner cup 42 is more stable and reliable. Of course, the lower flange 422 can be detachably connected to the top of the furnace head 41 by screws, or the lower flange 422 is fixedly connected to the top of the furnace head 41 by welding or adhesion.

[0050] An outer annular boss 416 extending upwards is integrally formed on the outer edge of the top of the furnace head 41. In addition, at least two positioning columns 417 extending upwards are integrally formed on the radial outer side of the top of the furnace head 41. All the positioning columns 417 are arranged in the circumferential direction and each is located on the radial inner side of the outer annular boss 416 and integrally formed with the outer annular boss 416. The outer disc 43 is sleeved outside the outer annular boss 416, and an inwardly turned edge 431 extending inwards to the top of the outer annular boss 416 and the positioning columns 417 is integrally formed on the lower end of the outer disc 43. The inwardly turned edge 431 is detachably connected to the positioning columns 417 of the furnace head 41 by the connecting member 46 (such as a screw), and the inwardly turned edge 431 is tightly pressed on the top of the outer annular boss 416. Thus, the outer disc 43 is firmly and reliably detachably connected to the furnace head 41, and a planar seal is formed between the inwardly turned edge 431 and the outer annular boss 416, effectively ensuring the sealing performance between the outer disc 43 and the furnace head 41.

[0051] Reference Figures 1-2 In this embodiment, the combustion plate 44 is clamped between the outer disc 43 and the outer side wall of the central cavity 113 and covers the top opening of the inner annular cavity 111 and the top opening of the outer annular cavity 112, respectively. The inner cup 42 is tightly pressed on the top of the furnace head 41 by the combustion plate 44, so that the inner and outer cavities can be effectively prevented from being mixed.

[0052] Embodiment 2

[0053] Reference Figures 6-8The difference between the embodiment and embodiment 1 is that the gas distribution structure further comprises a heat insulation plate 45 arranged on the outer ring gas cavity 112 and connected with the furnace head 41, the heat insulation plate 45 tightly presses the inner cup body 42 and the outer disc body 43 on the top of the furnace head 41 respectively, so as to further improve the installation firmness and reliability of the inner cup body and the outer disc body. A plurality of gas passing holes 451 are arranged on the heat insulation plate 45 for the outer ring gas to pass through, all the gas passing holes 451 are arranged in the circumferential direction of the heat insulation plate 45, and are used for uniformly distributing the gas in the outer ring gas cavity 112 to the apertures of the combustion plate 44, so as to guide the outer ring gas, and the heat insulation plate 45 can effectively block the heat on the lower side of the combustion plate from radiating to the lower side of the furnace head, thereby reducing the temperature rise of the furnace head 41.

[0054] Further, the gas passing holes 451 can be arranged in the vertical direction to be inclined, so that the gas passing holes 451 are inclined upward. Of course, the gas passing holes 451 can also be designed to be arranged vertically, and a flow guide part 452 is arranged at the radial inner end or the rear end in the clockwise direction of the gas passing hole 451, the flow guide part 452 is used for guiding the outer ring gas flowing therethrough to the clockwise direction or the radial outer side of the heat insulation plate 45, so as to guide the outer ring gas, and is also used for preventing the combustion plate 44 from directly radiating heat downward, reducing the temperature rise of the furnace head 41 and the panel of the gas stove, and improving the heat exchange efficiency of the burner 1.

[0055] Further, a limiting step 421 arranged in the circumferential direction and in the shape of a ring is arranged in the middle of the inner cup body 42, the radial inner end of the heat insulation plate 45 abuts against the top of the limiting step 421 and tightly presses the inner cup body 42 on the top of the furnace head 41. The radial outer end of the heat insulation plate 45 is detachably connected with the positioning column 417 of the furnace head 41 through the connecting part 46 (for example, a screw), of course, the heat insulation plate 45 can also be welded or bonded to be fixed on the furnace head 41, and the inner turned edge 43 of the outer disc body 43 is tightly pressed between the heat insulation plate 45 and the top of the outer annular boss 416.

[0056] In addition, the support table 432 located below the combustion plate 44 is arranged on the upper end of the outer disc body 43, the flow guide disc 453 extending along the outer disc body 43 is integrally formed on the outer edge of the heat insulation plate 45, the upper end of the flow guide disc 453 is outwardly bent to form the outer turned edge 454, the outer turned edge 454 is arranged on the top of the support table 432 and abuts against or is connected with the support table 432, in this way, through the arrangement of the flow guide disc 453, the heat radiated downward by the combustion plate 44 can be better reduced, the heat loss is reduced, and the thermal efficiency of the burner 1 is improved.

[0057] Embodiment 3

[0058] Reference Figures 9-11The embodiment provides an infrared combustor with upper air inlet, the combustor 1 comprises a combustion body assembly as described in the embodiment 1 or 2, further comprises an ignition assembly 12 and a base assembly 13. The base assembly 13 is arranged at the bottom of the combustion body assembly 11 and can reliably support the combustion body assembly 11, and a gap for air passing is formed between the base assembly 13 and the combustion body assembly 11. The base assembly 13 is provided with an inner ring air channel 131 and an outer ring air channel 132, the air inlet end of the inner ejector pipe 411 is connected with the inner ring air channel 131 through the inner ring nozzle 641, the air inlet end of the outer ejector pipe 412 is connected with the outer ring air channel 132 through the outer ring nozzle 642, and the inner ring nozzle 641 and the outer ring nozzle 642 can eject primary air through the gap between the base assembly 13 and the combustion body assembly 11, so that complete upper air inlet is realized.

[0059] The ignition assembly 12 is detachably arranged on the base assembly 13, and the upper end of the ignition assembly 12 is arranged in the central cavity 113 and protrudes from the top of the combustion body assembly 11, and the discharge part 121 and the flame induction part 122 are arranged on the upper end of the ignition assembly 12 and extend to the top of the combustion plate 44 and the inner side of the combustion plate 44 respectively, so that the ignition assembly 12 has the dual functions of ignition and flame-out induction. The ignition assembly 12 can rotate relative to the base assembly 13 and the combustion body assembly 11, so that the ignition assembly 12 can be switched between the locked position and the unlocked position. When the ignition assembly 12 is in the unlocked position, the combustion body assembly 11 can be detached from the ignition assembly 12, and the combustion body assembly 11 is convenient; on the contrary, when the ignition assembly 12 is in the locked position, the ignition assembly 12 is stably and reliably arranged at the central cavity 113 of the combustion body assembly 11, and at this time, the ignition assembly 12 limits the combustion body assembly 11 from above, so that the combustion body assembly 11 cannot be detached from the ignition assembly 12.

[0060] Reference Figures 10-13 In the embodiment, the base assembly 13 comprises a fixing seat 61, a base body 63, an inner ring nozzle 641 and an outer ring nozzle 642, the inner ring air channel 131 and the outer ring air channel 132 are arranged on the base body 63, the inner ring nozzle 641 is arranged on the upper end of the inner ring air channel 131 and faces the air outlet of the inner ejector pipe 411, and the outer ring nozzle 642 is arranged on the upper end of the outer ring air channel 132 and faces the air outlet of the outer ejector pipe 412. The fixing seat 61 is arranged between the base body 63 and the furnace head 41, the fixing seat 61 is provided with a mounting hole 611 penetrating the upper and lower end faces and two clamping positions 612 at the position corresponding to the central cavity 113, the two clamping positions 612 are circumferentially arranged on the outer side of the mounting hole 611, one of the clamping positions 612 is the locked position, and the other clamping position 612 is the unlocked position or the zero position. The ignition assembly 12 can move between the two clamping positions 612.

[0061] The ignition assembly 12 comprises an ignition needle 51 with a discharge part 121 and a flame sensing part 122, which is movably vertically arranged in the central cavity 113 and the mounting hole 611, and can be moved up and down and rotated in the circumferential direction relative to the combustion body assembly 11 and the base assembly 13. The ignition needle 51 is provided with a positioning rod 511 extending downward, which can be moved between two clamping positions 612. When the ignition assembly 12 is in the locked position, the positioning rod 511 is inserted into the clamping position as the locked position, at this time, the discharge part 121 and the flame sensing part 122 of the ignition assembly 12 are both located above the combustion plate 44, and the combustion body assembly 11 cannot be separated from the base assembly 13. When the combustion body assembly 11 needs to be removed, the ignition needle 51 is first pulled upward to move the positioning rod 511 away from the clamping position as the locked position; then the ignition needle 51 is rotated to move the positioning rod 511 to the clamping position as the unlocked position; and finally the positioning rod 511 is inserted into the clamping position as the unlocked position, at this time, the discharge part 121 and the flame sensing part 122 of the ignition assembly 12 are both moved to directly above the central cavity 113, and the combustion body assembly 11 can be separated from the base assembly 13 for cleaning without the need to remove the ignition assembly 12.

[0062] Further, the fixed seat 61 is also provided with a sliding groove 613, and the two clamping positions 612 are communicated through the sliding groove 613, so that when the ignition assembly 12 is switched, the positioning rod 511 can move along the sliding groove 613, without the need to pull the ignition assembly 12 upward to a large extent, and the sliding groove 613 and the two clamping positions 612 can both serve as air passages for supplementing secondary air to the central cavity 113. In addition, referring to Figures 13-14 , the fixed seat 61 is also provided with a notch 615 between the sliding groove 613 and the mounting hole 611, and the sliding groove 613 is communicated with the mounting hole 611 through the notch 615 to save materials.

[0063] The fixed seat 61 is integrally formed at the top with an upward extending stop part 617, which is arranged close to the clamping position 612 as the locked position, and the upper end of which is inserted into the lower end of the central cavity 113 upward, for allowing the ignition assembly 12 to rotate only in a specified area, preventing the ignition needle from being knotted or even twisted off due to unlimited rotation, and also serving as a handle for conveniently holding the fixed seat.

[0064] Further, the ignition assembly 12 further comprises a resilient member 52 and a clamping ring 53, the clamping ring 53 is arranged below the fixed seat 61 and clamps the lower end of the ignition needle 51, and the resilient member 52 is sleeved outside the lower end of the ignition needle 51 and clamped between the clamping ring 53 and the fixed seat 61, so that the ignition needle 51 can be stably and reliably positioned and fixed on the fixed seat 61, preventing the ignition needle 51 from being pulled out of the fixed seat 61 upward.

[0065] Further, the lower end of the fixed seat 61 can be detachably connected with the base body 63 of the base assembly 13 by fasteners 62 (e.g. screws), of course, the lower end of the fixed seat 61 can be integrally formed with the base body 63. In the present embodiment, referring to Figures 11-13 A receiving groove 631 adapted to embed the lower end of the fixed seat 61 is formed on the top of the base body 63, and a wire hole 633 is formed on the partial groove bottom surface of the receiving groove 631 for the wire of the ignition assembly 12 to pass through. The lower end of the fixed seat 61 is inserted into the receiving groove 631, and the opposite two outer side walls of the lower end of the fixed seat 61 are integrally formed with outwardly extending lugs 616, which are fastened to the base body 63 by fasteners 62 (e.g. screws). In addition, in order to further strengthen the strength of the base body 63, a reinforcing rib 632 extending upward is integrally formed on the top of the base body 63, the reinforcing rib is prismatic, and the receiving groove 631 transversely penetrates the reinforcing rib 632 and divides the reinforcing rib 632 into two parts.

[0066] Referring to Figure 10 The upper end of the fixed seat 61 is inserted into the lower end of the central cavity 113, and the sliding groove 613 is in communication with the central cavity 113, so as to realize reliable limiting of the combustion body assembly 11 by cooperation of the fixed seat 61 and the lower end of the central cavity 113, and at the same time, the fixed seat 61 supplies secondary air to the central cavity 113. Further, in order to prevent the combustion body assembly 11 from rotating relative to the fixed seat 61, the upper end of the fixed seat 61 and the lower end of the central cavity 113 are designed in any one of "D" shape, oval shape or polygonal shape. In addition, a positioning structure can also be provided between the fixed seat 61 and the cavity wall of the central cavity 113.

[0067] The positioning structure includes a flange 614 and an upper clamping groove 1131 which are matched and clamped, at least one upper clamping groove 1131 is provided on the lower end of the cavity wall of the central cavity 113, and a flange 614 is protruded on the outer side wall of the fixed seat 61 at the position corresponding to the upper clamping groove 1131, and the upper end of the flange 614 is matched and clamped with the upper clamping groove 1131. In addition, the positioning structure also includes a lower clamping groove 6311, and the lower end of the flange 614 is matched and clamped with the lower clamping groove 6311.

[0068] Further, the burner 1 also includes a decorative cover 14, which is arranged above the combustion body assembly 11 and detachably connected with the upper end of the ignition assembly 12, so as to cover the central cavity 113 in the middle of the combustion body assembly and the ignition assembly 12, and perform decoration, and prevent foreign matters from falling on the ignition assembly 12 to affect ignition and use.

[0069] Embodiment 4

[0070] Referring to Figure 15The difference between the embodiment and the embodiment 1 is that the burner 1 further comprises a first switch 23, which is arranged on the gas inlet end of the outer ring air channel 132 and is used to control the on-off state of the outer ring air channel 132, so as to control the gas supply of the outer ring air cavity 112.

[0071] In the embodiment, the first switch 23 is preferably a time-delay valve, which is used to open in time-delay mode when the ignition assembly 12 discharges to ignite, or to open immediately after the ignition succeeds, and is also used to close immediately or in time-delay mode after the ignition fails. It is particularly pointed out that the time-delay valve can be configured to always not open when the ignition fails, and to open only after the ignition succeeds, so as to avoid frequent opening of the time-delay valve, improve the service life of the time-delay valve, effectively avoid the gas supply to the outer ring air cavity 112 of the burner 1 when the ignition fails, and thus improve the phenomenon of flame overflow of the burner when cold-state ignition and the phenomenon of deflagration when hot-state ignition.

[0072] It can be seen that, by additionally arranging the first switch 23, the first switch is used to open in time-delay mode when the ignition assembly 12 discharges to ignite, or to open immediately after the ignition succeeds, so that the inner ring air cavity 111 of the burner 1 is supplied with gas earlier than the outer ring air cavity 112 of the burner 1, the phenomenon of flame overflow of the burner and the phenomenon of deflagration when hot-state ignition are improved, and the use safety and user experience are improved.

[0073] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A combustion body assembly characterized by, The gas distribution structure comprises: a furnace head (41) provided with a central cavity (113) with open upper and lower ends at a central position of the furnace head (41), and provided with an inner ejector pipe (411) and an outer ejector pipe (412) at the bottom of the furnace head (41); an inner cup body (42) detachably arranged on the top of the furnace head (41) and located outside the central cavity (113), and an inner annular air cavity (111) with an upward opening is formed between the inner cup body (42) and the central cavity (113), and the inner annular air cavity (111) is in communication with the inner ejector pipe (411); an outer disc body (43) detachably arranged on the top of the furnace head (41) and located outside the inner cup body (42), and an outer annular air cavity (112) with an upward opening is formed between the outer disc body (43) and the inner cup body (42), and the outer annular air cavity (112) is in communication with the outer ejector pipe (412); an inner annular boss (415) extending upward and located outside the central cavity (113) is integrally formed on the top of the furnace head (41), the inner cup body (42) is sleeved outside the inner annular boss (415) and abuts or is connected with the top of the furnace head (41); and / or an outer annular boss (416) extending upward is integrally formed on the outer edge of the top of the furnace head (41), the outer disc body (43) is sleeved outside the outer annular boss (416), and an inner flange (431) extending inward is integrally formed on the lower end of the outer disc body (43), the inner flange (431) is detachably connected with the furnace head (41), and the inner flange (431) abuts with the top of the outer annular boss (416); the gas distribution structure further comprises a heat insulation plate (45), and a plurality of strip-shaped heat dissipation holes are sequentially arranged on the heat insulation plate (45) in a circumferential direction.

2. A combustion body assembly according to claim 1, wherein an inner air inlet cavity (4131) recessed downward and open upward and an inner mounting groove (4132) are arranged on the top of the furnace head (41), at least part of the inner ejector pipe (411) is arranged in the inner mounting groove (4132) and integrally formed with the opposite two groove walls of the inner mounting groove (4132), and the gas outlet end of the inner ejector pipe (411) is in communication with the inner annular air cavity (111) through the inner air inlet cavity (4131); and / or an outer air inlet cavity (4141) recessed downward and open upward and an outer mounting groove (4142) are arranged on the top of the furnace head (41), at least part of the outer ejector pipe (412) is arranged in the outer mounting groove (4142) and integrally formed with the opposite two groove walls of the outer mounting groove (4142), and the gas outlet end of the outer ejector pipe (412) is in communication with the outer annular air cavity (112) through the outer air inlet cavity (4141).

3. A combustion body assembly according to claim 1, wherein the inner cup body (42) is provided with a limiting step (421) in the form of a ring, and the limiting step (421) is located above the inner annular boss (415) and abuts or gap fits with the top of the inner annular boss (415); and / or A lower flange (422) is integrally formed on the periphery of the lower end of the inner cup body (42) and extends outward, and the lower flange (422) abuts or is connected to the top of the burner head (41).

4. A combustion body assembly according to claim 1, wherein The gas distribution structure further comprises a heat insulation plate (45) arranged on the outer ring gas cavity (112) and connected to the burner head (41), and the heat insulation plate (45) tightly presses the inner cup body (42) and the outer disc body (43) on the top of the burner head (41), and a plurality of gas passing holes (451) are arranged on the heat insulation plate (45) for the outer ring gas to pass through.

5. A combustion body assembly according to claim 4, wherein The outer disc body (43) further comprises a combustion plate (44), a support table (432) is arranged below the combustion plate (44), a flow guide disc (453) extending along the outer disc body (43) is integrally formed on the outer periphery of the heat insulation plate (45), the upper end of the flow guide disc (453) is bent outward to form an outward turning edge (454), and the outward turning edge (454) is arranged on the top of the support table (432) and abuts or is connected to the support table (432).

6. A combustion body assembly according to any one of claims 1-5, characterised in that The combustion plate (44) is clamped between the outer disc body (43) and the outer side wall of the central cavity (113), and covers the top openings of the inner ring gas cavity (111) and the outer ring gas cavity (112), respectively, and the inner cup body (42) is tightly pressed on the top of the burner head (41) by the combustion plate (44).

7. An updraft infrared burner characterized by, It comprises: a base assembly (13) provided with an inner ring gas channel (131) and an outer ring gas channel (132); a combustion body assembly according to any one of claims 1-6, which is detachably mounted on the top of the base assembly (13), the gas inlet end of the inner ejector pipe (411) is in communication with the inner ring gas channel (131), and the gas inlet end of the outer ejector pipe (412) is in communication with the outer ring gas channel (132); an ignition assembly (12) detachably mounted on the base assembly (13), and the upper end of the ignition assembly (12) is arranged in the central cavity (113) and protrudes from the top of the combustion body assembly, and the ignition assembly (12) can be switched between a locked position and an unlocked position.

8. An updraft infrared burner as claimed in claim 7, characterized in that The base assembly (13) comprises a fixing seat (61) and a base body (63), the fixing seat (61) is arranged between the base body (63) and the burner head (41), the fixing seat (61) is provided with a mounting hole (611) and two clamping positions (612) located outside the mounting hole (611); the ignition assembly (12) comprises an ignition needle (51), the ignition needle (51) is movably arranged vertically in the mounting hole (611) and is provided with a positioning rod (511), and the positioning rod (511) can move between the two clamping positions (612).

9. An updraft infrared burner as claimed in claim 8, characterized in that The fixing seat (61) is further provided with a sliding groove (613), and the two clamping positions (612) are in communication through the sliding groove (613); and / or a limiting portion (617) extending upward is integrally formed on the top of the fixing seat (61), and the limiting portion (617) is arranged close to one of the clamping positions (612).

10. An updraft infrared burner according to claim 8 or 9, characterized in that The ignition assembly (12) further comprises an elastic member (52) and a snap ring (53), the snap ring (53) is arranged below the fixing seat (61) and clamps the lower end of the ignition needle (51), the elastic member (52) is sleeved on the outer end of the lower end of the ignition needle (51) and clamped between the snap ring (53) and the fixing seat (61).

11. An updraft infrared burner as defined in claim 9, wherein The lower end of the fixing seat (61) is detachably connected with the base body (63) through a fastener (62), or the lower end of the fixing seat (61) is integrally formed with the base body (63) of the base assembly (13); the upper end of the fixing seat (61) is inserted into the lower end of the central cavity (113) in cooperation.

12. An updraft infrared burner as claimed in claim 11, characterized in that The upper end of the fixing seat (61) and the lower end of the central cavity (113) are any one of "D" shape, oval shape or polygonal shape; and / or, a positioning structure is arranged between the fixing seat (61) and the cavity wall of the central cavity (113).

13. An updraft infrared burner as defined in claim 7, wherein Further comprising a first switch (23), the first switch (23) is arranged on the air inlet end of the outer ring air channel (132), used for opening in delay when the ignition assembly (12) discharges and ignites, or opening immediately after successful ignition, and used for closing immediately or closing in delay after extinguishing.

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