Base assembly and upper air inlet burner thereof

Abstract

The base assembly comprises a fixing ring with a cavity, and the bottom of the fixing ring is open to form a bottom opening; the top of the fixing ring is closed, or the top of the fixing ring is opened to form a top opening; at least one through hole is formed in the side wall of the fixing ring and communicated with the cavity. According to the base assembly, the fixing ring is simple in structure, the fire distributor can be stably and reliably installed outside the side wall of the base body through the fixing ring, and the problems that the fire distributor is prone to toppling and the temperature of the base body rises too high are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of stoves, and in particular to a base assembly and an upper air inlet burner thereof. Background Art

[0002] The existing top-inlet burner includes a base assembly, a flame divider and a fire cover assembly. The fire cover assembly is generally installed on the top of the base assembly through the flame divider. During use, the heat on the fire cover assembly is directly transferred downward to the base assembly through the flame divider, causing the temperature rise of the base assembly to be too high.

[0003] In addition, the fire distributor is generally installed on the top of the base assembly by cooperating with a positioning column and a positioning groove. With this installation method, the fire distributor is prone to tipping over, which is inconvenient to carry. Summary of the invention

[0004] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention provides a base assembly with a simple structure, which can stably and reliably mount the ignition distributor on the side wall of the base body through a fixing ring, effectively solving the problems of the ignition distributor being easy to tip over and the base body having too high a temperature rise. The present invention also provides an upper air inlet burner.

[0005] According to the base assembly provided above, it is implemented through the following technical solution:

[0006] A base assembly comprises a fixing ring having a cavity, wherein the bottom of the fixing ring is open to form a bottom opening; the top of the fixing ring is closed, or the top of the fixing ring is open to form a top opening; at least one through hole is opened on the side wall of the fixing ring, and the through hole is connected to the cavity.

[0007] In some embodiments, a support extending outward is fixedly provided at a position on the outer side wall of the fixing ring corresponding to the through hole, and the support is located above or below the corresponding through hole.

[0008] In some embodiments, fixing holes are respectively provided at opposite ends of the support, and / or a clearance portion is provided on a side of the support close to the through hole.

[0009] In some embodiments, a plurality of downwardly opening positioning grooves are circumferentially spaced apart at the bottom of the fixing ring, or a plurality of downwardly opening positioning grooves are circumferentially spaced apart at the lower end of the cavity wall of the cavity, and the positioning grooves are in communication with the cavity.

[0010] In some embodiments, a plurality of convex ribs extending into the cavity and spaced circumferentially are fixedly disposed at the lower end of the cavity wall of the cavity, and the positioning grooves are formed between adjacent convex ribs.

[0011] In some embodiments, when the top of the fixing ring is closed, an opening communicating with the cavity is provided on the top plate of the fixing ring, and the opening includes at least one of a positioning hole, a wire hole, a screw hole, and a perspective hole.

[0012] In some embodiments, it also includes a base body and / or a connecting arm, the upper end of the base body is inserted into the cavity, and an air outlet is provided at a position on the outer wall of the base body corresponding to the through hole; a connecting arm arranged corresponding to the through hole is provided outside the fixing ring, and the connecting arm is detachably connected to the fixing ring.

[0013] In some embodiments, a gap is left between the outer side wall of the base body and the inner cavity wall of the fixing ring.

[0014] In some embodiments, the base body is provided with a threading hole penetrating through the top and bottom thereof, and / or an upper positioning portion extending upward is fixedly provided on the top of the base body.

[0015] In some embodiments, a support platform and / or a lower positioning portion is provided at the lower end of the outer wall of the base body, the support platform is located below the fixing ring and abuts against the bottom of the fixing ring, and the lower positioning portion cooperates and plugs with the positioning groove on the fixing ring.

[0016] In some embodiments, it also includes: a cover plate, which is detachably connected to the top of the base body, the fixing ring is located below the cover plate and abuts against or gap-fits with the cover plate; and / or a retaining ring, which is sleeved on the outer side of the upper end of the base body, the fixing ring is located below the retaining ring and abuts against the retaining ring.

[0017] In some embodiments, a positioning structure is provided between the clamping ring and the upper end of the base body.

[0018] In some embodiments, the connecting arm includes a U-shaped mounting portion, and two free ends of the mounting portion are respectively disposed on two opposite outer sides of a support of the fixing ring and are detachably connected to the support.

[0019] In some embodiments, the connecting arm also includes a first extension portion and / or a second extension portion, the first extension portion is vertically arranged above or below the mounting portion and fixedly connected to the mounting portion, the second extension portion is arranged obliquely in the vertical direction, the mounting portion is located between the second extension portion and the fixing ring and fixedly connected to the higher end of the second extension portion.

[0020] According to the above-mentioned upward air inlet burner, it is realized by the following technical solution:

[0021] A top air inlet burner comprises: a base assembly as described above; and a burner body, comprising a flame divider arranged corresponding to the through hole, the flame divider comprising an ejector tube and a connecting seat, the connecting seat being arranged outside the side wall of the fixing ring and being detachably connected to the fixing ring, the ejector tube being arranged transversely on the connecting seat, and its air inlet end extending toward the direction of the through hole.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] 1. The base assembly of the present invention is provided with a cavity with a bottom opening on the fixing ring and suitable for accommodating the upper end of the base body, and a through hole connected to the cavity is provided on the side wall of the fixing ring. Compared with the existing ignition distributor installed on the top of the base assembly by cooperating with the positioning column and the positioning groove, the ignition distributor can be stably, reliably and detachably installed outside the side wall of the base body through the fixing ring with a simple structure, and the ejection tube on the ignition distributor can be connected with the nozzle on the base body through the through hole, thereby effectively solving the problem that the ignition distributor is easy to tip over and the temperature rise of the base body is too high;

[0024] 2. By arranging a connecting arm outside the fixed ring, the ignition divider can be detachably connected to the fixed ring through the connecting arm, thereby increasing the distance between the ignition divider and the fixed ring, which is beneficial to reducing the heat transfer from the ignition divider to the fixed ring and the base body, thereby reducing the temperature rise of the fixed ring and the base body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The structure of the fixing ring in the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 2 The structure of the fixing ring in the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 3 is a schematic structural diagram of a base assembly in Embodiment 1 of the present invention;

[0028] Figure 4 is a schematic structural diagram of the base body in Example 1 of the present invention;

[0029] Figure 5 is a cross-sectional view of the base body in Example 1 of the present invention;

[0030] Figure 6 is a cross-sectional view of the base assembly in Example 1 of the present invention;

[0031] Figure 7 is a schematic structural diagram of the connecting arm in Example 1 of the present invention;

[0032] Figure 8is an exploded view of the cover plate and the clamping ring in Example 1 of the present invention;

[0033] Fig. 9 is a schematic structural diagram of a clamping ring in Embodiment 1 of the present invention;

[0034] Fig.10 is a schematic structural diagram of an upper air inlet burner in Embodiment 1 of the present invention;

[0035] Fig.11 is a schematic structural diagram of a burner body in Embodiment 1 of the present invention;

[0036] Fig.12 is an exploded view of the base assembly in Example 2 of the present invention;

[0037] Fig.13 is an exploded view of the base body and the fixing ring in Example 3 of the present invention;

[0038] Fig.14 is a schematic structural diagram of a base assembly in Embodiment 3 of the present invention;

[0039] Fig.15 It is a structural schematic diagram of the upper air inlet burner in Example 3 of the present invention.

[0040] In the figure: 1-base assembly, 11-base body, 110-gas channel, 111-nozzle, 112-sinking platform, 113-threading hole, 114-upper positioning part, 1151-supporting platform, 1152-limiting step, 116-lower positioning part, 117-positioning groove, 118-supporting foot, 119-indicating part, 12-fixing ring, 120-cavity, 121-through hole, 122-support, 1 23-fixing hole, 124-avoiding portion, 125-positioning groove, 126-convex rib, 13-connecting arm, 131-mounting portion, 132-first extension portion, 133-second extension portion, 14-cover plate, 141-positioning hole, 142-wire hole, 143-screw hole, 144-perspective hole, 15-clamping ring, 151-bump, 152-inner ring rib, 153-outer ring rib, 16-moving member;

[0041] 2-burner body, 21-ignition distributor head, 211-mixing chamber, 22-injection tube, 23-connecting seat, 231-vertical section, 232-transverse section, 24-fire cover assembly; 3-ignition assembly. DETAILED DESCRIPTION

[0042] The following examples illustrate the present invention, but the present invention is not limited to these examples. Modifications to the specific embodiments of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed by the present invention.

[0043] Example 1

[0044] refer to Figure 1-3 The present embodiment provides a base assembly, which is applied to an upper air inlet burner. The base assembly 1 includes a fixing ring 12 having a cavity 120. In the present embodiment, the bottom of the fixing ring 12 is open to form a bottom opening, and the top of the fixing ring 12 is open to form a top opening. The bottom opening and the top opening are both used for the upper end of the base body 11 to pass through, so that the fixing ring 12 can be mounted on the outer side of the upper end of the base body 11. When the fixing ring 12 is mounted on the base body 11, the base body 11 can be stably and reliably mounted on the outer side of the base body side wall through the fixing ring 12 and the ignition divider on the burner body 2 (see Fig.10 ), effectively solving the problem of the ignition distributor being easy to tip over and the base body having too high a temperature rise. In addition, a through hole 121 communicating with the cavity 120 is provided on the side wall of the fixing ring 12, through which the ejector tube 22 on the burner body 2 is conveniently connected to the nozzle 111 on the base body 11, so that the base body 11 can reliably deliver the gas to the burner body 2.

[0045] Further, refer to Figure 1-3 and Fig.10 A support 122 extending outward is fixedly provided at a position of the outer wall of the fixing ring 12 corresponding to the through hole 121, and the support 122 is located above or below the corresponding through hole 121. In this embodiment, the support 122 is integrally formed and arranged on the outer wall of the fixing ring 12 and located above the through hole 121. The support 122 is used to be detachably connected with the ignition distributor on the burner body 2 by screws, so that the ignition distributor can be firmly and reliably installed outside the side wall of the fixing ring 12 and the base body 11, preventing the ignition distributor from being easily tipped over, and at the same time reducing heat transfer, so as to reduce the temperature rise of the fixing ring 12 and the base body 11.

[0046] In addition, fixing holes 123 are respectively provided at opposite ends of the support 122. The two fixing holes 123 are coaxially arranged, and the two may be disconnected or connected. In order to avoid interference between the ejector tube 22 on the burner body 2 and the nozzle 111 on the base body 11 due to the setting of the support 122, a clearance portion 124 is provided on one side of the support 122 close to the through hole 121. The shape of the clearance portion 124 is designed to match the shape of the air inlet end of the ejector tube 22.

[0047] Further, refer to Figure 2-4, a plurality of positioning grooves 125 opening downward are concavely arranged at intervals in the circumferential direction at the bottom of the fixing ring 12, or a plurality of positioning grooves 125 opening downward are arranged at intervals in the circumferential direction at the lower end of the cavity wall of the cavity 120. In this embodiment, a plurality of positioning grooves 125 are arranged at intervals in the circumferential direction at the lower end of the cavity wall of the cavity 120, and each positioning groove 125 is connected to the cavity 120, and is used to cooperate and plug with the lower positioning portion 116 on the base body 11, so as to prevent the fixing ring 12 from rotating relative to the base body 11 through the one-to-one cooperation between the plurality of positioning grooves 125 and the plurality of lower positioning portions 116, and realize reliable limiting and fixing of the fixing ring 12.

[0048] Furthermore, a plurality of ribs 126 extending into the cavity 120 and spaced circumferentially are fixedly provided at the lower end of the cavity wall of the cavity 120, and positioning grooves 125 are formed between adjacent ribs 126. The bottom surface of each rib 126 is flush with the bottom surface of the fixing ring 12. In this way, it is convenient to strengthen the overall strength of the fixing ring 12 through the plurality of ribs 126, and at the same time, it is convenient to form positioning grooves 125 between adjacent ribs 126, which will not affect the fixing of the fixing ring 12 on the base plate body 11.

[0049] refer to Figure 3-9 The base assembly 1 further includes a base body 11 and / or a connecting arm 13. The upper end of the base body 11 is vertically inserted into the cavity 120 from bottom to top. A gas channel 110 is provided on the base body 11. The gas outlet of the gas channel 110 is provided on the outer wall of the base body 11 and arranged corresponding to the through hole 121. A nozzle 111 connected to the gas channel 110 is installed at the gas outlet. The gas outlet direction of the nozzle 111 faces the through hole 121, and is used to provide gas for the ejector pipe 22 of the burner body 2. The connecting arm 13 is provided outside the fixing ring 12 and arranged corresponding to the through hole 121. One end of the connecting arm 13 is detachably connected to the support 122 of the fixing ring 12, and the other end is used to be detachably connected to the connecting seat 23 of the burner body 2.

[0050] Furthermore, a gap (not shown in the figure) is left between the cavity wall of the fixing ring 12 and the outer wall of the base body 11. Through this gap, the direct contact between the fixing ring and the base body 11 can be reduced, thereby helping to reduce the heat transfer from the fixing ring to the base body, and further reducing the temperature rise of the base body 11.

[0051] Furthermore, a sink 112 is provided at a position of the outer wall of the base body 11 corresponding to the through hole 121, and the air outlet is provided on a side of the sink 112 facing the through hole 121, and at least part of the nozzle 111 is provided in the sink 112 and communicates with the air outlet, so that at least part of the nozzle 111 is accommodated in the sink 112. Of course, the sink 112 can also be omitted.

[0052] Furthermore, the base body 11 is provided with a threading hole 113 arranged vertically and penetrating the top and bottom thereof. The threading hole 113 is used for the wires of the ignition assembly 3 to pass vertically. By making full use of the base body 11, an installation position is reserved for the wires of the ignition assembly 3, which makes it easier to assemble the wires. An upper positioning portion 114 extending upward is fixedly provided on the top of the base body 11. The upper positioning portion 114 is preferably a positioning column, which is used to guide the wires to prevent the wires from being easily entangled. At the same time, it can also be used to support the outer cover or decorative cover to prevent the top of the outer cover or decorative cover from directly contacting the top of the base body 11. Of course, the threading hole 113 and / or the upper positioning portion 114 can also be omitted.

[0053] Furthermore, a support platform 1151 and / or a lower positioning portion 116 are provided at the lower end of the outer wall of the base body 11. The support platform 1151 is an annular structure, which is used to reliably support the fixing ring 12 and to limit the lower position of the fixing ring 12. The number and position of the lower positioning portions 116 correspond to the number and position of the positioning grooves 125 on the fixing ring 12, and each lower positioning portion 116 is used to cooperate with the positioning groove 125 on the fixing ring 12. During installation, the fixing ring 12 is sleeved on the outer side of the upper end of the base body 1, and its bottom is in contact with the top surface of the support platform 1151, and the positioning groove 125 on the fixing ring 12 is engaged with the corresponding lower positioning portion 116.

[0054] In addition, a limiting step 1152 and a positioning groove 117 are provided at the upper end of the outer wall of the base body 11. The limiting step is used to limit the clamping ring 15 downward, and the positioning groove 117 is used to limit the cover plate 14 downward and circumferentially to prevent the cover plate 14 from rotating relative to the base body 11. In addition, a plurality of supporting feet 118 extending downward and arranged at intervals along the circumference are integrally formed at the bottom of the base body 11 to reliably support the base body 11; an indicator 119 is provided at the top of the base body 11, and the direction of the indicator 119 is parallel to the central axis of the nozzle 111 and is located on the same vertical plane. Through the indicator 119, it is convenient for workers to intuitively understand the direction of the nozzle 111, so that workers can quickly assemble the fixing ring 12 on the base body 11, reduce the probability of assembly errors, improve assembly efficiency, and reduce costs.

[0055] refer to Figure 3 and Figure 7The connecting arm 13 includes a U-shaped mounting portion 131, the two free ends of which are respectively arranged on the opposite outer sides of the support 122 of the fixing ring 12, and are detachably connected to the support 122 through rivets; the end of the mounting portion 131 away from the fixing ring 12 is used for detachably connecting to the connecting seat 23 of the burner body 2. Thus, the fixing ring 12 and the connecting seat 23 of the burner body 2 are reliably connected together through the connecting arm 13, so that the distance between the igniter and the fixing ring is increased, which is conducive to reducing the heat transfer from the igniter to the fixing ring and the base body, thereby reducing the temperature rise of the fixing ring and the base body.

[0056] In order to facilitate the connection between the mounting portion 131 and the connecting seat 23 of the burner body 2, a plurality of screw holes (not shown in the figure) are provided at the end of the mounting portion 131 away from the fixing ring, and the end of the screw hole close to the connecting seat 23 protrudes from the side of the mounting portion 131 facing the connecting seat 23. In this way, when the mounting portion 131 is connected to the connecting seat 23 on the ignition divider by screws, the contact area between the connecting arm 13 and the connecting seat 23 can be effectively reduced, thereby reducing the heat transfer between the connecting arm 13 and the ignition divider.

[0057] The connecting arm 13 also includes a first extension portion 132 and / or a second extension portion 133. The first extension portion 132 is vertically arranged above or below the mounting portion 131 and fixedly connected to the mounting portion 131. In this embodiment, the first extension portion 132 is vertically arranged below the mounting portion 131, and its upper end is integrally formed with an end of the mounting portion 131 close to the connecting seat 23. The first extension portion 132 is detachably connected to the connecting seat 23 by at least one screw to further enhance the reliability of the connection between the connecting arm 13 and the connecting seat 23.

[0058] The second extension part 133 is arranged obliquely in the vertical direction, and the mounting part 131 is located between the second extension part 133 and the fixing ring 12 and is fixedly connected to the high end of the second extension part 133. A moving member 16 is detachably mounted at the low end of the second extension part 133, and the moving member 16 is a moving wheel for abutting against a preset mounting surface.

[0059] refer to Figure 3 , 6 and Figure 8-9In order to firmly and reliably fix the fixing ring 12 on the base body 11 and realize the upper limit of the fixing ring, the base assembly 1 also includes a cover plate 14 and a snap ring 15. The cover plate 14 is detachably connected to the top of the base body 11 by multiple screws, and the fixing ring 12 is located below the cover plate 14 and abuts against or fits with the cover plate 14. The snap ring 15 is sleeved on the outer side of the upper end of the base body 11 and is clamped between the upper end of the fixing ring 12 and the cover plate 14. In this way, the cover plate 14 can press the fixing ring 12 tightly against the support platform 1151 of the base body 11 through the snap ring 15. Of course, the retaining ring 15 can also be omitted. When the retaining ring 15 is omitted, the bottom periphery of the cover plate 14 is designed to abut against the upper end surface of the fixing ring, and the cover plate 14 directly presses the fixing ring 12 against the support platform 1151 of the base body 11; the cover plate 14 can also be omitted instead. When the cover plate 14 is omitted, the retaining ring 15 is designed to be connected to the base body 11 by screws, rivets, welding, bonding or snaps.

[0060] A positioning hole 141 is provided at a position of the cover plate 14 corresponding to the upper positioning portion 114, and the positioning hole 141 is used for the upper positioning portion 114 on the top of the base body 11 to pass vertically. A wire passing hole 142 is provided at a position of the cover plate 14 corresponding to the wire passing hole 113, and the wire passing hole 142 is connected to the wire passing hole 113, and is used for the wire of the ignition assembly 3 to pass through. The cover plate 14 is provided with a plurality of screw holes 143, and the plurality of screw holes 143 are arranged one by one corresponding to the plurality of fastening holes on the top of the base body 11. When installing, screws are used to pass through the screw holes 143 from top to bottom and are fastened to the top of the base body 1, so that the cover plate 14 can be directly and firmly and reliably installed on the top of the base body 11 and can be detachably installed. In addition, a perspective hole 144 is opened at the position of the cover plate 14 corresponding to the indicator part 119 on the top of the base body 11, through which the corresponding relationship between the perspective hole 144 and the indicator part 119 can be directly checked.

[0061] A positioning structure is provided between the clamping ring 15 and the upper end of the base body 11, and the positioning structure includes a protrusion 151 and a positioning groove 117. The positioning groove 117 is provided at the upper end of the side wall of the base body 1, and the protrusion 151 is integrally formed and provided on the inner side wall of the clamping ring 15, and inserted into the positioning groove 117, so that the clamping ring 15 can be reliably positioned on the base body through the mating plug-in protrusion 151 and the positioning groove 117, and the clamping ring is prevented from rotating circumferentially relative to the base body. Furthermore, the diameters of the protrusion 151 and the positioning groove 117 are gradually increased from bottom to top, so that an interference fit is formed when the protrusion 151 and the positioning groove 117 are matingly plugged in.

[0062] An inner ring rib 151 and / or an outer ring rib 152 extending downward are integrally formed at the bottom of the clamping ring 15. The inner ring rib 151 is located above the limiting step 1152 and abuts against or has a clearance fit with the limiting step. The outer ring rib 152 is inserted into the cavity 120 and abuts against the cavity wall of the cavity 120 to limit the position of the fixing ring. Of course, the inner ring rib 151 and / or the outer ring rib 152 can also be omitted.

[0063] refer to Figure 10-11 The present embodiment also provides an upper air inlet burner, comprising a base assembly and a burner body 2 as described above. The burner body 2 is arranged outside the fixed ring 12 and is arranged corresponding to the through hole 121. The burner body 2 includes a igniter and a fire cover assembly 24. The igniter is arranged corresponding to the through hole 121 on the fixed ring 12. The igniter includes a igniter head 21, an ejector tube 22 and a connecting seat 23. The igniter head 21 is arranged outside the fixed ring 12 and is arranged corresponding to the through hole 121. The igniter head 21 has an upwardly opening gas mixing chamber 211, and a fire cover assembly 24 covering the gas mixing chamber 211 is provided on the top of the igniter head 21. The connecting seat 23 is arranged between the igniter head 21 and the fixed ring 12, and one end thereof is integrally formed with the igniter head 21, and the other end is detachably connected to the support 122 on the fixed ring 12 through a connecting arm 13. The ejector tube 22 is laterally arranged on the connecting seat 23 and is integrally formed with the fixing seat 23. The air outlet end of the ejector tube 22 is connected to the mixing chamber 211 of the ignition distributor head 21, and the air inlet end extends toward the through hole 121 for connecting to the nozzle 111 on the base body 11.

[0064] refer to Fig.11 The connecting seat 23 includes a vertical section 231 and a horizontal section 232 fixedly connected to form an "L" shape. Of course, the horizontal section 232 and the vertical section 231 can also be designed to be connected to form an inverted "T" shape. The vertical section 231 is sleeved outside the air inlet end of the ejector tube 22 and is connected to the ejector tube 22. A plurality of connecting holes are provided on the vertical section 231. Through the connecting holes and matching screws, the vertical section 231 can be detachably connected to the connecting arm 13, so that the ignition distributor and the base assembly 1 can be detachably connected as a whole.

[0065] The transverse section 232 is arranged outside the outer wall of the ejector tube 22 and is integrally formed with the igniter head 21 and the ejector tube 22 respectively. A fixing seat is fixed at one end of the transverse section 232 close to the igniter head 21, and the fixing seat is used to fix the ignition component 3. The ignition component 3 can be detachably installed on the fixing seat of the connecting seat 23.

[0066] Example 2

[0067] refer to Fig.12The difference between this embodiment and the first embodiment is that the top of the fixing ring 12 is closed, and the fixing ring 12 is configured to be directly covered outside the upper end of the base body 11. When the fixing ring 12 is configured to be covered outside the upper end of the base body 11, the top plate of the fixing ring 12 is fastened to the top of the base body 1 through a plurality of screw holes 143, so that the fixing ring 12 is directly and firmly and reliably installed on the base body 11 and can be detachably installed.

[0068] It can be seen that compared with the open top of the fixing ring 12 in Example 1, the top plate of the fixing ring 12 is directly and detachably mounted on the base body 11 by using multiple screws, without the help of the cover plate 14 and the retaining ring 15 as described in Example 1. At this time, the cover plate 14 and the retaining ring 15 can be omitted to make the overall structure of the base assembly 1 simpler, with fewer assembly steps and lower costs.

[0069] Since the top of the fixing ring 12 is closed, when the cover plate 14 and the retaining ring 15 are omitted, an opening (not shown in the figure) connecting to the cavity 120 is provided on the top plate of the fixing ring 12, and the opening includes at least one of a positioning hole 141, a wire hole 142, a screw hole 143 and a perspective hole 144.

[0070] A plurality of screw holes 143 connecting to the cavity 120 are provided on the top plate of the fixing ring 12. The plurality of screw holes 143 are arranged one-to-one corresponding to the plurality of fastening holes on the top of the base body 11. During installation, screws are passed through the screw holes 143 from top to bottom and are fastened to the top of the base body 1, so that the fixing ring 12 can be directly and firmly, reliably and detachably installed on the base body 11.

[0071] A positioning hole 141 is provided at a position corresponding to the upper positioning portion 114 on the top plate of the fixing ring 12, and the positioning hole 141 is used for the upper positioning portion 114 on the top of the base body 11 to pass vertically. A wire passing hole 142 is provided at a position corresponding to the wire passing hole 113 on the top plate of the fixing ring 12, and the wire passing hole 142 is connected with the wire passing hole 113, and is used for the wire of the ignition assembly 3 to pass through. In addition, when the wire passing hole 142 and the wire passing hole 113 are arranged opposite and connected, the nozzle 111 on the base body 11 just faces the through hole 121 of the fixing ring 12.

[0072] A perspective hole 144 is provided at a position of the top plate of the fixing ring 12 corresponding to the indicator portion 119 on the top of the base body 11. Through the perspective hole 144, the corresponding relationship between the perspective hole 144 and the indicator portion 119 can be checked in time. Based on the corresponding relationship between the perspective hole 144 and the indicator portion 119, it can be determined whether the nozzle 111 on the base body 11 is arranged opposite to the through hole 121 of the fixing ring 12. In this way, the connection between the nozzle 111 and the ejector tube 22 on the burner body 2 through the through hole 121 can be further determined.

[0073] Example 3

[0074] refer to Figure 13-15 The difference between this embodiment and the first embodiment is that the structure of the base assembly 1 is different, and correspondingly, the number of the burner bodies 2 is also different. In this embodiment, two through holes 121 communicating with the cavity 120 are provided on the side wall of the fixing ring 12, and the two through holes 121 are arranged circumferentially at intervals, and the central axis thereof is set at an obtuse angle. In addition, two supports 122 are integrally formed on the upper end of the outer wall of the fixing ring 12, and the two supports 122 are arranged one by one corresponding to the two through holes 121, and a connecting arm 13 is detachably connected to each support 122.

[0075] Two gas channels 110 are provided on the base body 11. The gas outlets of the two gas channels 110 are provided on the outer wall of the base body 11 and are arranged one by one with the two through holes 121. A nozzle 111 is installed at each gas outlet. The central axes of the two nozzles 111 are also provided at an obtuse angle. The diameters of the two nozzles 111 may be the same or different. When the diameters of the two nozzles 111 are different, different heat loads may be formed to better meet the needs of users for different heat loads in different cooking scenarios.

[0076] In this embodiment, there are two burner bodies 2, and the two burner bodies 2 are circumferentially arranged outside the base assembly 1. The connecting seat 23 of each burner body 2 is detachably connected to the support 122 on the fixing ring 12 through the connecting arm 13, so that the user's dual-stove usage requirements can be met.

[0077] Example 4

[0078] The difference between this embodiment and embodiment 3 is that the top of the fixing ring 12 is closed, and the top plate of the fixing ring 12 is fastened to the top of the base body 1 through a plurality of screw holes 143, so that the fixing ring 12 can be directly and firmly, reliably and detachably mounted on the base body 11. In this way, the cover plate 14 and the retaining ring 15 can be omitted, so that the overall structure of the base assembly 1 is simpler, the assembly process is reduced, and the cost is lower.

[0079] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A base assembly, characterized in that: It comprises a fixing ring (12) having a cavity (120), wherein the bottom of the fixing ring (12) is open to form a bottom opening; The top of the fixing ring (12) is closed, or the top of the fixing ring (12) is open to form a top opening; At least one through hole (121) is provided on the side wall of the fixing ring (12), and the through hole (121) is connected to the cavity (120).

2. A base assembly according to claim 1, characterized in that: A support (122) extending outward is fixedly provided at a position on the outer side wall of the fixing ring (12) corresponding to the through hole (121), and the support (122) is located above or below the corresponding through hole (121).

3. A base assembly according to claim 2, characterized in that: The support (122) is provided with fixing holes (123) at opposite ends thereof, and / or a side of the support (122) close to the through hole (121) is provided with a clearance portion (124).

4. A base assembly according to claim 1, characterized in that: A plurality of positioning grooves (125) opening downward are circumferentially spaced apart at the bottom of the fixing ring (12), or a plurality of positioning grooves (125) opening downward are circumferentially spaced apart at the lower end of the cavity wall of the cavity (120), and the positioning grooves (125) are in communication with the cavity (120).

5. A base assembly according to claim 4, characterized in that: A plurality of convex ribs (126) extending into the cavity (120) and spaced circumferentially are fixedly disposed at the lower end of the cavity wall of the cavity (120), and the positioning grooves (125) are formed between adjacent convex ribs (126).

6. A base assembly according to claim 5, characterized in that: When the top of the fixing ring (12) is closed, an opening communicating with the cavity (120) is provided on the top plate of the fixing ring (12), and the opening comprises at least one of a positioning hole (141), a wire hole (142), a screw hole (143) and a perspective hole (144).

7. A base assembly according to any one of claims 1 to 6, characterized in that: It also comprises a base body (11) and / or a connecting arm (13); the upper end of the base body (11) is inserted into the cavity (120); an air outlet is provided at a position on the outer wall of the base body (11) corresponding to the through hole (121); and a connecting arm (13) is provided outside the fixing ring (12) and arranged corresponding to the through hole (121); the connecting arm (13) is detachably connected to the fixing ring (12).

8. A base assembly according to claim 7, characterized in that: A gap is left between the outer wall of the base body (11) and the inner wall of the fixing ring (12).

9. A base assembly according to claim 7, characterized in that: The base body (11) is provided with a threading hole (113) penetrating the top and bottom thereof, and / or an upper positioning portion (114) extending upward is fixedly provided on the top of the base body (11).

10. A base assembly according to claim 7, characterized in that: A support platform (1151) and / or a lower positioning portion (116) are provided at the lower end of the outer side wall of the base body (11); the support platform (1151) is located below the fixing ring (12) and abuts against the bottom of the fixing ring (12); and the lower positioning portion (116) is plugged in and matched with a positioning groove (125) on the fixing ring (12).

11. A base assembly according to claim 7, characterized in that: Also includes: A cover plate (14) is detachably connected to the top of the base body (11), and the fixing ring (12) is located below the cover plate (14) and is in abutment with or clearance fit with the cover plate (14); and / or The clamping ring (15) is sleeved on the upper end of the base body (11), and the fixing ring (12) is located below the clamping ring (15) and abuts against the clamping ring (15).

12. A base assembly according to claim 11, characterized in that: A positioning structure is provided between the clamping ring (15) and the upper end of the base body (11).

13. A base assembly according to claim 7, characterized in that: The connecting arm (13) comprises a U-shaped mounting portion (131), wherein two free ends of the mounting portion (131) are respectively arranged on two opposite outer sides of a support (122) of the fixing ring (12) and are detachably connected to the support (122).

14. A base assembly according to claim 13, characterized in that: The connecting arm (13) further comprises a first extension portion (132) and / or a second extension portion (133); the first extension portion (132) is vertically arranged above or below the mounting portion (131) and is fixedly connected to the mounting portion (131); the second extension portion (133) is arranged obliquely in the vertical direction; the mounting portion (131) is located between the second extension portion (133) and the fixing ring (12) and is fixedly connected to the higher end of the second extension portion (133).

15. An upward air inlet burner, characterized in that: include: A base assembly as described in any one of claims 1 to 14; The burner body (2) comprises an ignition divider arranged corresponding to the through hole (121), the ignition divider comprising an ejector tube (22) and a connecting seat (23), the connecting seat (23) being arranged outside the side wall of the fixing ring (12) and being detachably connected to the fixing ring (12), the ejector tube (22) being arranged transversely on the connecting seat (23), and its air inlet end extending in the direction of the through hole (121).

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