Fire outlet sheet, fire cover comprising fire outlet sheet, composite fire cover and gas stove

Abstract

The utility model provides a fire outlet sheet, a fire cover comprising the fire outlet sheet, a composite fire cover and a gas stove. A plurality of sections of ruffles which are arranged at intervals along the circumferential direction are formed on the outer edge and / or the inner edge of a fire outlet sheet body of the fire outlet sheet; two adjacent ruffles on the same surface enclose a fire outlet groove on the fire outlet sheet body; the ruffle protrudes out of the fire outlet piece body and forms an air cavity with the fire outlet piece body in an enclosing mode. The fire outlet piece body is further provided with an axially-through air inlet hole. The fire outlet groove and the air inlet hole are both communicated with the air cavity. Due to the fact that ruffles need to be machined on the fire outlet sheet, a blanking tearing belt can be avoided, the requirement for the height of burrs is not high, and the blanking cost is reduced. The fire outlet piece is lifted through the ruffles, gaskets are not needed, the height of the fire outlet holes is determined by the height of the ruffles, and materials are saved; the air cavity in the fire outlet piece is communicated with the air inlet hole, the consistency of the static pressure head of the fire outlet holes is good, the interior of the fire cover is communicated with the air cavity through the air inlet hole, airflow of the hollowed-out part of the whole fire cover is communicated, heat dissipation is good, and the fire cover is not prone to being burnt red.

Description

Technical Field

[0001] The utility model relates to the field of gas stoves, in particular to a fire outlet piece and a fire cover, a composite fire cover and a gas stove containing the fire outlet piece. Background Art

[0002] The fire cover, also known as the fire distributor, is an important part of the gas stove for gas combustion. The fire cover includes an outer fire cover and an inner fire cover, wherein the outer fire cover is ring-shaped and the inner fire cover is arranged at the center of the outer fire cover. Both the outer fire cover and the inner fire cover are provided with fire outlet holes, where gas and air burn.

[0003] Patent application CN116182161A discloses a fire cover suitable for atmospheric household gas stoves, and patent application CN117006465A discloses an outer fire cover suitable for full premixed blast gas stoves. Both the fire cover and the outer fire cover are formed by staggered stacking of fire outlet sheets and gaskets.

[0004] The above-mentioned fire-outlet sheet is punched out on the edge to form a gap, and a fire-outlet sheet layer is formed by stacking the fire-outlet sheets layer by layer. Multiple fire-outlet sheets in the fire-outlet sheet layer are aligned and stacked up and down, and a flat rectangular fire-outlet hole is formed at the gap. The width of the fire-outlet hole is the width of the gap, and the height of the fire-outlet hole is the sum of the thicknesses of the stacked fire-outlet sheets. In addition, the fire-outlet holes can be separated by arranging a gasket between the upper and lower fire-outlet sheet layers, thereby forming a multi-layer fire-outlet hole structure. In addition, air holes are also provided on the fire-outlet sheet. After the fire-outlet sheets are stacked up and down, the air holes thereon are connected up and down to form an air inlet channel. Each air inlet channel corresponds to and is connected to a fire-outlet hole, thereby independently supplying air to the fire-outlet hole.

[0005] The above-mentioned ignition pieces are all sheet metal ignition pieces, which are made by cold stamping process. Cold stamping is a pressure processing method that uses a stamping die to apply pressure to sheet material or hot material on a press at room temperature to cause it to undergo plastic deformation or separation, thereby obtaining parts of the desired shape and size. During the cold stamping process, burrs will be generated on the ignition piece.

[0006] The applicant found that the above-mentioned prior art has at least the following technical problems:

[0007] 1. The ignition sheets are stacked layer by layer, and the burr requirements for the ignition sheet punching are high (the burr height must be less than 0.05mm), resulting in high blanking die costs;

[0008] 2. The height of the fire hole is adjusted by the number of fire sheets stacked, and gaskets are required to separate the fire sheets to form the fire hole, which requires more materials and increases the cost;

[0009] 3. When there are many layers of fire holes, since the air inlet channels are independent of each other, the gas will cause pipe damage in the air inlet channel, and the static pressure head of the upper and lower layers will be uneven, resulting in inconsistent fire hole speeds of the upper and lower layers of fire holes, affecting the use effect;

[0010] 4. The fire cover has fewer hollow parts as a whole, and its own heat dissipation is poor, which affects its service life. Utility Model Content

[0011] The embodiments of the present application provide a fire-out sheet and a fire cover, a composite fire cover and a gas stove containing the same, thereby solving the technical problems in the prior art that the fire cover has many consumables, high cost, and needs to be improved in terms of use effect and service life.

[0012] To solve the above technical problems, in a first aspect, an embodiment of the present application provides a fire-discharging piece, comprising a fire-discharging piece body, wherein a plurality of folds arranged at intervals along the circumferential direction are formed on the outer edge and / or the inner edge of the fire-discharging piece body;

[0013] The two adjacent frills on the same surface of the fire outlet plate body are enclosed on the fire outlet plate body to form a fire outlet groove;

[0014] Each of the frills on the same surface of the fire-emitting piece body protrudes from the fire-emitting piece body and is surrounded by the fire-emitting piece body to form an air cavity;

[0015] The fire outlet plate body is also provided with an axially penetrating air inlet hole;

[0016] The fire outlet groove and the air inlet hole are both communicated with the air cavity.

[0017] Furthermore, each of the frills is distributed and rotated along the same direction on the fire outlet plate body.

[0018] Furthermore, the fire emitting piece body is annular, and the frill is formed on the outer edge or inner edge of the fire emitting piece body, and a sealing edge with the same height as the frill is formed on the inner edge or outer edge of the fire emitting piece body where the frill is not provided, and the sealing edge and each of the frills are located on the same surface of the same fire emitting piece body.

[0019] In a second aspect, an embodiment of the present application provides a fire cover, comprising the fire outlet piece described in any one of the first aspects.

[0020] Furthermore, the frills are all located on the same surface of the fire outlet plate body, or the frills are respectively located on the upper and lower surfaces of the fire outlet plate body;

[0021] The fire cover comprises a fire outlet ring, and the fire outlet ring comprises at least two fire outlet plates stacked in the same direction, and the hems on the upper and lower fire outlet plates are aligned one by one along the axial direction;

[0022] The fire outlet groove on the fire outlet plate and another fire outlet plate adjacent to the upper side are combined to form a fire outlet hole;

[0023] The air inlet holes on each of the fire outlet plates are connected up and down to form an air inlet channel;

[0024] The air cavity on each of the fire outlet plates is enclosed with another adjacent fire outlet plate to form an air inlet cavity, and the air inlet cavity is communicated with the air inlet channel.

[0025] Alternatively, the frills are all located on the same surface of the fire outlet plate body, the fire outlet plate body between two adjacent frills on the fire outlet plate is punched out to form a notch, and the width of the notch along the circumferential direction is smaller than the width of the frill along the circumferential direction;

[0026] The fire cover comprises a fire outlet ring, and the fire outlet ring comprises at least two fire outlet sheets stacked in opposite directions up and down;

[0027] The frills on the two adjacent fire outlet plates are staggered in the circumferential direction, and the fire outlet grooves on the fire outlet plates and the frills on the adjacent fire outlet plates are combined to form fire outlet holes;

[0028] The air inlet holes on each of the fire outlet plates are connected up and down to form an air inlet channel;

[0029] The air cavity on each of the fire outlet pieces is enclosed with the adjacent fire outlet pieces to form an air inlet cavity, and the air inlet cavity is communicated with the air inlet channel.

[0030] Alternatively, the fire-outlet piece is annular, and the frills are all located on the same surface of the fire-outlet piece body;

[0031] The fire cover comprises at least two upper and lower fire outlet rings which are arranged in a nested manner, and the inner diameter of the upper fire outlet ring is larger than the inner diameter of the lower fire outlet ring;

[0032] Each of the fire outlet rings includes at least one fire outlet plate, and the fire outlet groove on the fire outlet plate is combined with another fire outlet plate adjacent to the upper side to form a fire outlet hole, thereby forming two fire outlet surfaces expanding from the inside to the outside along the radial direction of the outer fire cover;

[0033] In the same fire outlet circle, the air inlet holes on each fire outlet piece are connected up and down to form an air inlet channel, the air cavity on each fire outlet piece is enclosed with another adjacent fire outlet piece to form an air inlet cavity, and the air inlet cavity is connected with the air inlet channel.

[0034] Alternatively, the frill is located on the inner edge of the fire-discharging piece;

[0035] The fire cover also includes an outer cylinder body that is arranged outside each fire outlet ring. One end of the outer cylinder body is provided with an annular end face. The annular end face is fixedly connected to the fire outlet ring located in the outermost circle and is communicated with the air inlet hole on the fire outlet plate in the fire outlet ring in the outermost circle. The other end of the outer cylinder body extends axially and exceeds each of the fire outlet rings.

[0036] Furthermore, a flow equalizing plate is provided between the inner wall of the outer cylinder and the fire outlet ring, and an axially penetrating flow equalizing hole is provided on the flow equalizing plate.

[0037] Alternatively, the frills are all located on the same surface of the fire outlet plate body, or the frills are respectively located on the upper and lower surfaces of the fire outlet plate body;

[0038] The fire cover comprises a fire outlet ring, the fire outlet ring comprises at least one fire outlet plate and at least one gasket stacked up and down, and the gasket is provided with a connecting hole corresponding to the air inlet hole of the fire outlet plate; wherein:

[0039] The fire outlet groove on the fire outlet plate and the gasket form a fire outlet hole;

[0040] The air inlet hole on the fire outlet plate is connected with the connecting hole up and down to form an air inlet channel;

[0041] The air cavity on the fire outlet plate and the gasket are combined to form an air intake cavity, and the air intake cavity is communicated with the air intake channel.

[0042] Furthermore, in the same fire outlet ring, at least one of the fire outlet plates located relatively below has a folding number of edges less than that of the fire outlet plates located relatively above, so as to achieve flame stabilization.

[0043] Furthermore, the fire outlet ring also includes a top plate, and the top plate and the fire outlet plates in the fire outlet ring are riveted and fixed in sequence, and the fire outlet grooves on the fire outlet plates adjacent to the top plate are enclosed with the top plate to form fire outlet holes.

[0044] Furthermore, the fire outlet ring also includes a base, the top plate, the fire outlet plate in the fire outlet ring, and the base are riveted and fixed in sequence, and the fire outlet groove on the fire outlet plate adjacent to the base is enclosed with the base to form a fire outlet hole.

[0045] In a third aspect, an embodiment of the present application further provides a composite fire cover, the composite fire cover comprising an ejector and the fire cover as described in the second aspect, wherein:

[0046] The ejector comprises a chassis, and the chassis is provided with at least one external ejector tube for communicating with the fire cover;

[0047] A skirt is provided at the lower end of the outer cylinder, and a ring is provided on the chassis of the ejector corresponding to the skirt. The skirt and the ring are riveted and fixed, so that the fire cover and the ejector are fixed as a whole.

[0048] In a fourth aspect, an embodiment of the present application further provides a gas stove, comprising the fire outlet piece as described in any one of the first aspect, the fire cover as described in any one of the second aspect, and / or the composite fire cover as described in the third aspect.

[0049] The fire-out sheet provided in the embodiment of the present application is formed into a fire cover by stacking layers, and the frills thereon can be made by a folding and flattening process, and the frills are obtained by folding the outer edge and / or the inner edge of the fire-out sheet body in the self-direction at least once. The fire-out sheet is made by a cold stamping process, and there is a bright band on one side and a tear band on the other side at the punching mouth. The burrs are the result of the tearing, but because the edge of the fire-out sheet needs to be processed by a folding and flattening process to produce the frills, the punching tear band can be reasonably avoided, and the height requirement for the burrs does not need to be too high, thereby reducing the cost of the punching mold;

[0050] In addition, the fire outlet plate is raised by the hem, and the formed fire outlet groove is superimposed and enclosed with another adjacent fire outlet plate to form a fire outlet hole, without the need to set a gasket, and the height of the fire outlet hole is determined by the hem height, which in turn depends on the number of hem folding times and the material thickness. Therefore, the height of the fire outlet hole can be adjusted by the number of hem folding (referring to the hem folding flattening process). For example, folding once is equivalent to increasing the height by 1 times, and folding twice is equivalent to increasing the height by 2 times, thereby saving materials and reducing costs;

[0051] At the same time, the air cavity on the fire outlet plate can connect all the fire outlet holes in the same layer, and the air inlet channels formed by the axial alignment of the air inlet holes are interconnected in the circumferential and axial directions, the static pressure heads of the fire outlet holes are consistent, the fire outlet speeds of the upper and lower layers of the fire outlet holes are consistent, and the use effect is better;

[0052] Moreover, the fire cover is assembled with the fire outlet sheet, each layer of the fire cover has a fire outlet hole connected to the outside, the inside of the fire cover is connected to the air cavity through the air inlet hole, the airflow of the entire hollow part of the fire cover is connected, the fire cover itself has good heat dissipation performance, is not easy to burn red, and has a long service life;

[0053] As described above, the embodiments of the present application effectively solve the above-mentioned technical problems and achieve the beneficial effects of less consumables, low cost, good use effect and long service life of the assembled fire cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0055] Figure 1 This is a schematic structural diagram of a fire-discharging piece in Embodiment 1 of the utility model;

[0056] Figure 2 This is a schematic structural diagram of a fire-discharging piece in Embodiment 2 of the present utility model;

[0057] Figure 3 This is a schematic diagram of the overall structure of an inner fire cover in Example 6 of the utility model;

[0058] Figure 4 for Figure 3 A schematic diagram of the explosion of an inner fire cover structure;

[0059] Figure 5 for Figure 3 A structural cross-sectional view of an inner fire cover;

[0060] Figure 6 This is a schematic structural diagram of a fire-discharging piece in Embodiment 3 of the present utility model;

[0061] Figure 7 This is a schematic diagram of the overall structure of an outer fire cover in Example 7 of the utility model;

[0062] Figure 8 for Figure 7 A schematic diagram of the explosion of an outer fire cover structure;

[0063] Fig. 9 for Figure 7 A structural cross-sectional view of an outer fire cover;

[0064] Fig.10 This is a schematic structural diagram of a fire outlet piece in Embodiment 4 of the utility model;

[0065] Fig.11 This is a schematic structural diagram of a fire-discharging piece in Embodiment 5 of the present utility model;

[0066] Fig.12 This is a schematic diagram of the overall structure of an outer fire cover in Example 8 of the utility model;

[0067] Fig.13 for Fig.12 A schematic diagram of the explosion of an outer fire cover structure;

[0068] Fig.14 for Fig.12 A structural cross-sectional view of an outer fire cover;

[0069] Fig.15 This is a schematic diagram of the overall structure of a composite fire cover in Example 9 of the utility model;

[0070] Fig.16 for Fig.15 An exploded diagram of the structure of an ejector of a composite fire cover;

[0071] Fig.17 for Fig.15 An exploded diagram of the structure of a composite fire cover;

[0072] Fig.18 for Fig.15 A structural cross-sectional view of a composite fire cover;

[0073] Fig.19 This is a schematic structural diagram of a fire outlet piece in Embodiment 10 of the present utility model;

[0074] Fig. 20 for Fig.19 A schematic diagram of the structure of a fire-discharging piece after being inverted;

[0075] Fig.21 This is a cross-sectional view of an inner fire cover in Example 12 of the utility model;

[0076] Fig. 22 for Fig.21 An exploded diagram of the structure of an inner fire cover. DETAILED DESCRIPTION

[0077] The embodiments of the present application provide a fire-out sheet and a fire cover, a composite fire cover and a gas stove containing the same, thereby solving the technical problems in the prior art that the fire cover has many consumables, high cost, and needs to be improved in terms of use effect and service life.

[0078] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0079] like Figures 1 to 22 As shown, one or more embodiments of the present application disclose a fire-outlet sheet, the fire-outlet sheet comprising a fire-outlet sheet body, a plurality of (at least two) folds arranged at intervals along the circumferential direction are formed on the outer edge and / or the inner edge of the fire-outlet sheet body, and the folds extend along the circumferential direction;

[0080] The two adjacent folds on the same surface of the fire emitting piece body enclose a fire groove h on the fire emitting piece body, the folds on the same surface of the fire emitting piece body protrude from the end surface of the fire emitting piece body and enclose an air cavity with the fire emitting piece body, and an axially through air inlet hole is also provided on the fire emitting piece body; and the fire groove h and the air inlet hole are both connected with the air cavity.

[0081] Specifically, the fire-outlet sheet is stacked layer by layer to form a fire cover, and the hem on the fire-outlet sheet can be made by a folding and flattening process, and the hem is obtained by folding the outer edge and / or inner edge of the fire-outlet sheet body onto the fire-outlet sheet body at least once. The fire-outlet sheet is made by a cold stamping process, and there is a bright band on one side and a tear band on the other side at the punching opening. The burr is the result of the tearing, but because the edge of the fire-outlet sheet needs to be processed by a folding and flattening process, the punching tear band can be reasonably avoided, and the height requirement for the burr does not need to be too high, thereby reducing the cost of the punching die;

[0082] In addition, the fire outlet plate is raised by the hem, and the formed fire outlet groove h can be superimposed with another adjacent fire outlet plate to enclose the fire outlet hole m, without the need to set a gasket, and the height of the fire outlet hole m is determined by the hem height, which in turn depends on the number of hem folding times and the material thickness. Therefore, the height of the fire outlet hole can be adjusted by the number of hem folding (referring to the hem folding flattening process). For example, folding once is equivalent to increasing the height by 1 times, and folding twice is equivalent to increasing the height by 2 times, thereby saving materials and reducing costs;

[0083] At the same time, the air cavity on the fire outlet plate can connect all the fire outlet holes m in the same layer, so the air inlet channels formed by the axial alignment of the air inlet holes are interconnected in the circumferential and axial directions, the static pressure heads of the fire outlet holes m are consistent, the fire outlet holes m of the upper and lower layers have the same speed, and the use effect is better;

[0084] Moreover, the fire cover formed by assembling the fire outlet sheet has a fire outlet m in each layer connected to the outside, the inside of the fire cover is connected to the air cavity through the air inlet hole, the airflow of the entire hollow part of the fire cover is connected, the fire cover itself has good heat dissipation performance, is not easy to burn red, and has a long service life;

[0085] As described above, the embodiments of the present application effectively solve the above-mentioned technical problems and achieve the beneficial effects of less consumables, low cost, good use effect and long service life of the assembled fire cover.

[0086] It should be noted that the fire outlet piece can be made of stainless steel, and of course it can also be made of other suitable materials. The fire outlet piece can be circular or annular, and of course it can also be other shapes, which are not limited here.

[0087] In addition, in the present application, axial refers to the direction of the central axis of the fire-emitting plate or the direction parallel to the central axis, radial refers to the direction of the diameter of the fire-emitting plate, and circumferential refers to the direction around the central axis, with the direction of the assembled fire cover toward the bottom of the pot being the top, the direction toward the ground being the bottom, the center of the fire-emitting plate being the inside, and the direction away from the center of the fire-emitting plate being the outside. The following description is made in accordance with the above-mentioned reference orientation, which will not be elaborated on, but it should be emphasized that the above-mentioned limitations on orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0088] Furthermore, the outer edge and / or the inner edge of the fire outlet plate body is folded and flattened toward one side or both sides of the fire outlet plate body at least once to form the fold.

[0089] Specifically, when the same fire-outlet sheet is folded and flattened, the folding direction (which side of the fire-outlet sheet body is bent toward) and the number of folding times can be the same, and the folds on the same fire-outlet sheet are all located on the same side of the fire-outlet sheet body, as shown in Examples 1 to 5. However, for the same fire-outlet sheet body, the folds can also be folded toward both sides of the fire-outlet sheet body, and the upper and lower sides of the same fire-outlet sheet body are respectively formed with folds, but the number of folding times on the same side is still the same, as shown in Examples 10 and 11. The shapes of the folds of the same fire-outlet sheet can be the same or substantially the same, and the intervals between two adjacent folds on the same side of the fire-outlet sheet body can be the same or substantially the same.

[0090] Specifically, in order to arrange the frills at intervals on the outer edge and / or the inner edge, before the frilling and flattening process, the non-frilled parts on the outer edge and / or the inner edge need to be removed at intervals, that is, firstly, the frills are formed by intermittent punching, and then the frilling and flattening process is performed, so that multiple sections of frills arranged at intervals can be formed. If the upper and lower surfaces of the fire-emitting piece body need to be frilled, the frilling and flattening process can be performed on the flip side of the fire-emitting piece body.

[0091] It should be emphasized that when the fire-outlet sheet forms a fire cover, a gasket may not be used, as shown in Examples 6 to 9. However, the fire-outlet sheet described in the present application can also be used in conjunction with a gasket to assemble a fire cover, as shown in Example 12.

[0092] Furthermore, the fire-outlet sheet body is annular, the frill is formed on the outer edge or inner edge of the fire-outlet sheet body, a sealing edge with the same height as the frill is formed on the inner edge or outer edge of the fire-outlet sheet body where the frill is not provided, and the sealing edge and each frill are located on the same surface of the same fire-outlet sheet body, as shown in Examples 3, 4, and 5. In addition, in the embodiments of the present application, stacking in the same direction means that the corresponding frills on two adjacent fire-outlet sheets are stacked in the same direction, for example, when only one side of the two fire-outlet sheets is provided with frills, the frills on the two fire-outlet sheets are stacked upward or downward; when both sides of the two fire-outlet sheets are provided with frills, the frills at corresponding positions on the two fire-outlet sheets are stacked upward or downward. Reverse stacking refers to stacking of the corresponding frills on two adjacent fire-emitting sheets in two directions. For example, when only one side of the two fire-emitting sheets is provided with frills, the frills on one fire-emitting sheet are stacked upward and the frills on the other fire-emitting sheet are stacked downward. When both fire-emitting sheet bodies are provided with frills on both sides, the frills on the corresponding positions of the two fire-emitting sheets are stacked with one facing upward and the other facing downward. The fire-emitting sheets in the reverse direction can be formed by inverting the fire-emitting sheets, or by the opposite direction of the folding edges on the fire-emitting sheets (toward the upper surface or the lower surface of the fire-emitting sheet body).

[0093] Example 1

[0094] like Figure 1 The illustrated embodiment 1 provides a first fire emitting piece 110, which includes a first fire emitting piece body 111. The first fire emitting piece body 111 is circular, and its outer edge is folded once by a folding and flattening process to form a plurality of first folds 112 arranged at intervals along the circumferential direction, and the first folds 112 are all located on one side of the first fire emitting piece body 111.

[0095] The two adjacent first frills 112 are combined on the first fire-outlet plate body 111 to form a fire-outlet groove h. The first fire-outlet plate body 111 is also provided with an axially penetrating first air inlet hole 113 and a first rivet hole 114, wherein the first rivet hole 114 is processed on the same surface of the first frill 112 by a folding and flattening process to form a first rivet hole fold, so that the height of the first rivet hole 114 is flush with the first frill 112.

[0096] Each first fold 112 and the first fire-emitting piece body 111 are combined to form an air cavity.

[0097] Example 2

[0098] like Figure 2The illustrated embodiment 2 provides a second fire emitting piece 120, which includes a second fire emitting piece body 121. The second fire emitting piece body 121 is circular, and its outer edge is folded twice by a folding and flattening process to form a plurality of second folds 122 arranged at intervals along the circumferential direction. The second folds 122 are all located on one side of the second fire emitting piece 120.

[0099] Two adjacent second frills 122 are enclosed on the second fire-outlet plate body 121 to form a fire-out groove h, and the second fire-outlet plate body 121 is also provided with an axially through second air inlet hole 123 and a second rivet hole 124, wherein the second rivet hole 124 and the second frill 122 are processed on the same surface with the second frill to form a second rivet hole vertical edge through a flanging process, so that the height of the second rivet hole 124 is flush with the second frill 122.

[0100] Each second fold 122 and the second fire outlet plate body 121 enclose an air cavity.

[0101] Example 3

[0102] like Figure 6 The illustrated embodiment 3 provides a third fire emitting piece 130, which includes a third fire emitting piece body 131. The third fire emitting piece body 131 is in a circular ring shape, and its outer edge is folded twice by a folding and flattening process to form a plurality of third folds 132 arranged at intervals along the circumferential direction, and the third folds 132 are all located on one side of the third fire emitting piece body 131.

[0103] The two adjacent third frills 132 are combined to form a fire groove h on the third fire-outlet plate body 131, and the fire groove h is rotated and distributed in the same direction (clockwise or counterclockwise). The third fire-outlet plate body 131 is also provided with an axially through third air inlet hole 133 and a third rivet hole 134, and the third air inlet hole 133 is arranged in a one-to-one correspondence with the fire groove h, wherein the third rivet hole 134 is processed on the same surface of the third frill 132 through a folding and flattening process to form a third rivet hole fold, so that the height of the third rivet hole 134 is flush with the third frill 132.

[0104] In addition, a notch 135 is punched out along the thickness direction of the third fire outlet plate body 131 between two circumferentially adjacent third frills 132 , and generally speaking, the circumferential width of the notch 135 is smaller than the circumferential width of the third frill 132 .

[0105] The third fold 132 and the third fire-emitting piece body 131 are combined to form an air cavity.

[0106] Example 4

[0107] like Fig.10The illustrated embodiment 4 provides a fourth fire emitting piece 140, which includes a fourth fire emitting piece body 141. The fourth fire emitting piece body 141 is in a circular ring shape, and its inner edge is folded twice by a folding and flattening process to form a plurality of fourth folds 142 arranged at intervals along the circumferential direction, and the fourth folds 142 are all located on one side of the fourth fire emitting piece body 141.

[0108] The two adjacent fourth frills 142 are enclosed on the fourth fire-outlet plate body 141 to form a fire-outlet groove h, and the fire-outlet groove h is distributed in a same direction (clockwise or counterclockwise). The fourth fire-outlet plate body 141 is also provided with an axially through fourth air inlet hole 143 and a fourth rivet hole 144, and the fourth air inlet hole 143 is arranged in a one-to-one correspondence with the fire-outlet groove h, wherein the fourth rivet hole 144 is processed on the same surface of the fourth frill 142 through a folding and flattening process to form a fourth rivet hole fold, so that the height of the fourth rivet hole 144 is flush with the fourth frill 142.

[0109] The fourth fold 142 and the fourth fire-emitting piece body 141 enclose an air cavity.

[0110] Example 5

[0111] like Fig.11 The illustrated embodiment 5 provides a fifth fire emitting piece 150, which includes a fifth fire emitting piece body 151. The fifth fire emitting piece body 151 is in a circular ring shape, and its inner edge is folded once by a folding and flattening process to form a plurality of fifth folds 152 arranged at intervals along the circumferential direction, and the fifth folds 152 are all located on one side of the fifth fire emitting piece body 151.

[0112] The two adjacent fifth folds 152 are enclosed on the fifth fire-outlet plate body 151 to form a fire-outlet groove h, and the fire-outlet groove h is distributed in a same direction (clockwise or counterclockwise). The fifth fire-outlet plate body 151 is also provided with an axially through fifth air inlet hole 153 and a fifth rivet hole 154, and the fifth air inlet hole 153 is arranged in a one-to-one correspondence with the fire-outlet groove h, wherein the fifth rivet hole 154 is processed on the same surface of the fifth fold 152 by a folding and flattening process to form a fifth rivet hole fold, so that the height of the fifth rivet hole 154 is flush with the fifth fold 152.

[0113] The fifth fold 152 and the fifth fire-emitting piece body 151 are combined to form an air cavity.

[0114] It should be noted that the number of folding times in the above embodiment is only an example, and the number of folding and flattening processes of the outer edge and / or inner edge of the fire outlet plate body needs to be determined according to the specific usage scenario. For example, the number of folding times can also be 3 times, or even more than 3 times. The more folding times, the higher the height of the formed fold, and the higher the height of the fire outlet groove h and the air cavity.

[0115] Example 6

[0116] like Figures 3 to 5 The embodiment 6 shown provides a first inner fire cover A, which includes a first fire ring disposed on a first base 300 and a first top sheet 200 disposed above the first fire ring. The first fire ring includes the first fire sheet 110 in embodiment 1 and the second fire sheet 120 in embodiment 2.

[0117] Specifically, the first fire-out ring includes two first fire-out units stacked in the same direction from top to bottom. Each first fire-out unit includes a second fire-out piece 120 located at the top and a first fire-out piece 110 located at the bottom, the second fire-out piece 120 and the first fire-out piece 110 have the same diameter, and the first hem 112 of the second fire-out piece 120 and the second hem 122 of the first fire-out piece 110 are axially aligned one by one.

[0118] In the first fire circle, the first fire sheet 110 and the second fire sheet 120 are stacked in the same direction (the first fold 112 and the second fold 122 are both facing upwards), and the fire groove h on each first fire sheet 110 and the second fire sheet 120 and the adjacent first top sheet 200, first fire sheet 110 or second fire sheet 120 above, and the adjacent first fire sheet 110, second fire sheet 120 or first base 300 below enclose the fire hole m.

[0119] In the first fire unit, the first fire plate 110 is located below the second fire plate 120. Since the height of the first fold 112 on the first fire plate 110 is lower than the second fold 122 on the second fire plate 120, the height of the formed fire hole m is lower than the height of the fire hole m formed by the second fire plate 120. Therefore, it has a smaller fire area and can form a better mixture with the surrounding air, so as to fully burn. Moreover, it burns below the root of the upper fire hole m, which can increase the root temperature of the upper fire hole m, thereby effectively avoiding the flame separation of the upper fire hole m, has a flame stabilizing effect, and makes the combustion stable.

[0120] In addition, the first frills 112 or the second frills 122 on the upper and lower first fire outlet units are staggered along the circumferential direction, and the fire outlet holes m on the two first fire outlet units are staggered along the circumferential direction, so that the fire outlet holes m are more evenly distributed on the outer circumferential surface of the first inner fire cover A. Of course, the frills on the upper and lower first fire outlet units may not be staggered, which is not limited here.

[0121] In addition, the first fire-outlet ring may also be provided with fewer or more first fire-outlet units, such as 1, 3 or more, and each first fire-outlet unit may also include more first fire-outlet pieces 110 and / or second fire-outlet pieces 120, which is not limited here.

[0122] In addition, the first top sheet 200 and the first base 300 are circular in cross section, the first top sheet 200 is provided with a first top sheet rivet hole, the first base 300 is provided with a first base rivet hole 310, the first top sheet rivet hole, each first rivet hole 114, each second rivet hole 124, and each first base rivet hole 310 are aligned one by one along the axial direction, so that the first rivet 210 can be inserted and riveted to form the first inner fire cover A. Since the height of the first rivet hole 114 is flush with the first hem 112, and the height of the second rivet hole 124 is flush with the second hem 122, each first fire-out sheet 110 and the second fire-out sheet 120 are fixed horizontally.

[0123] like Figure 1 As shown, the first air inlet holes 113 on the first fire outlet plate body 111 include outer circle first air inlet holes 1131 arranged one by one corresponding to the first frills 112 and middle circle first air inlet holes 1133 arranged one by one corresponding to the fire outlet grooves, and also include inner circle first air inlet holes 1132 arranged in the center;

[0124] like Figure 2 As shown, the second air inlet holes 123 on the second fire outlet plate body 121 include outer circle second air inlet holes 1231 arranged one by one corresponding to the second frills 122 and middle circle second air inlet holes 1233 arranged one by one corresponding to the fire outlet grooves, and also include inner circle second air inlet holes 1232 arranged in the center;

[0125] like Figure 4 As shown, the first base 300 is provided with first connection holes 320, and the first connection holes include outer circle first connection holes 321 arranged one by one corresponding to the outer circle first air inlet holes 1131, middle circle first connection holes 323 arranged one by one corresponding to the middle circle first air inlet holes 1133, and inner circle first connection holes 322 arranged one by one corresponding to the inner circle first air inlet holes 1132;

[0126] The first air inlet hole 113 , the second air inlet hole 123 and the first connecting hole 320 are aligned and connected one by one to form air inlet channels respectively.

[0127] The air cavity on the first fire outlet plate 110 or the second fire outlet plate 120 and the adjacent first top plate 200, the first fire outlet plate 110 or the second fire outlet plate 120 enclose an air inlet and outlet cavity, and each air inlet cavity is circumferentially connected to each air inlet channel so that the static pressure head of each fire outlet hole m is consistent.

[0128] Since the three circles of air inlet holes are arranged on the first fire outlet plate 110 and the second fire outlet plate 130, the air inlet holes are evenly distributed on the fire outlet plates. Thus, the static pressure head of each fire outlet hole m is more consistent, and the heat dissipation of the first inner fire cover A is also better.

[0129] Example 7

[0130] like Figures 7 to 9 The illustrated embodiment 7 provides a first external fire cover B, which is suitable for an atmospheric gas stove, and includes a second base 500, a second fire ring arranged on the second base 500, and a second top plate 400 arranged above the second fire ring, wherein the second fire ring includes the third fire plate 130 in embodiment 3.

[0131] Since the atmospheric gas stove is naturally induced wind, that is, the primary air introduced at the ejector is naturally provided by the surrounding atmosphere, there will be a problem of insufficient primary air. A large amount of secondary air needs to be added when the fire hole burns. Therefore, the fire hole needs to be located on the outer peripheral surface of the first outer fire cover B.

[0132] Specifically, Figure 8 , 9 As shown, the second fire emitting ring includes a second fire emitting unit, and each second fire emitting unit includes two third fire emitting plates 130 stacked in opposite directions up and down (that is, the third frills 132 on the two third fire emitting plates 130 are in opposite directions, the third frills 132 of the upper third fire emitting plate 130 are located on the upper surface of the third fire emitting plate body 131, and the third frills 132 of the lower third fire emitting plate are located on the lower surface of the third fire emitting plate body 131), and the third frills 132 on the upper and lower third fire emitting plates 130 are staggered along the circumferential direction, that is, the notch 135 located at the top is axially aligned with the third frill 132 located at the bottom.

[0133] The fire outlet grooves h on each third fire outlet sheet 130 and the third frill 132 on the adjacent second top sheet 400 or the third fire outlet sheet 130 above, and the third frill 132 on the adjacent third fire outlet sheet 130 below or the second base 500 enclose to form a fire outlet m, and each fire outlet m is a rotating fire mouth that rotates and distributes in the same direction (clockwise or counterclockwise), and the rotating fire mouth is more conducive to the intersection of flames between the fire outlets m, improving the flame-proof effect and flame transfer effect. In addition, the rotating fire mouth produces a rotating fire, which makes the gas evenly distributed, and the outer flame is evenly distributed on the bottom of the pot, so that the combustion is more complete and more energy-saving and gas-saving.

[0134] Of course, the second fire-outlet ring may also include a plurality of second fire-outlet units stacked up and down, and each second fire-outlet unit may also include more third fire-outlet pieces 130, which is not limited here.

[0135] In addition, if Figure 8As shown, the second top sheet 400 and the second base 500 are in annular shape, and the second top sheet 400, the second fire ring and the second base 500 are fixed by riveting up and down by the second rivet 410, wherein the second top sheet 400 is provided with a second top sheet rivet hole, the second base 500 is provided with a second base rivet hole 510, and the second top sheet rivet hole, each third rivet hole 134, and the second base rivet hole 510 are aligned one by one along the axial direction, so that the second rivet 410 can be inserted and riveted to form the first outer fire cover B. Since the height of the third rivet hole 134 is flush with the third hem 132, each third fire sheet 130 is fixed horizontally.

[0136] like Figure 8 As shown, the second base 500 is provided with a second connecting hole 520 corresponding to the third air inlet hole 133, and the third air inlet holes 133 on each third fire-outlet piece 130 in the second fire-outlet ring are aligned one by one with the second connecting holes 520 on the second base 500 and connected to form an air inlet channel;

[0137] The air cavity on each third fire outlet piece 130 and the second top piece 400 or the third fire outlet piece 130 adjacent thereto enclose an air inlet cavity, and each air inlet cavity is circumferentially connected to each air inlet channel, so that the static pressure head of each fire outlet hole m is consistent.

[0138] In addition, if Figure 6 As shown, in order to seal the air inlet cavity, the inner edge of the third fire outlet plate body 131 is folded and flattened in the same direction as the third fold 132 to form a first sealing edge 136, and the first sealing edge 136 has the same height as the third fold 132.

[0139] Further, such as Figures 6 to 8 As shown, the first sealing edge 136 is provided with a fire guide notch 137 opening toward the center of the third fire outlet plate body 131, and the second top plate 400 is provided with a plurality of fire guide holes 420 spaced apart in the radial direction corresponding to the fire guide notch 137, the fire guide notch 137 is axially aligned with the fire guide holes 420 and connected to form a fire guide channel, and the fire guide channel connects the central cavity of the outer fire cover and the fire outlet hole m of the outer fire cover.

[0140] Specifically, the electronic ignition core is installed between the outer fire cover and the inner fire cover, and the ignition core faces the inner fire cover. When the fire outlet m on the inner fire cover is ignited, the fire ignites the fire outlet on the first outer fire cover B through the ignition channel.

[0141] Example 8

[0142] like Figures 12-14The illustrated embodiment 8 provides a second outer fire cover C, which is suitable for a blower type gas stove. The blower type gas stove uses a blower to provide primary air, and the amount of primary air is sufficient, and there is no need to supplement secondary air. Therefore, the second outer fire cover C in embodiment 8 can form the fire hole m on the inner peripheral surface of the second outer fire cover C.

[0143] like Fig.12 , 13 As shown, the second outer fire cover C includes an outer cylinder 700, on which a third fire ring e and a fourth fire ring f extending toward the center of the outer cylinder 700 are formed, wherein the third fire ring e and the fourth fire ring f both include the fourth fire piece 140 in Example 4 and the fifth fire piece 150 in Example 5.

[0144] The inner diameter of the third fire ring e is larger than the inner diameter of the fourth fire ring f, so that two stepped fire surfaces that gradually expand from the inside to the outside along the radial direction of the second outer fire cover C can be formed, which can effectively disperse the firepower and prevent the firepower from being concentrated. The inner diameter of the innermost fourth fire ring f is subject to the ejector 600, but the inner diameter of the third fire ring e can be adjusted according to the requirements of the stove thermal efficiency, flame uniformity distribution and aesthetics, and is not limited by the size of the ejector 600 itself, and has strong adjustability.

[0145] The fire holes m are arranged on the inner circumferential surface of the second outer fire cover C. Compared with the case where the fire holes m are arranged on the outer circumferential surface, the flames between adjacent fire holes m all burn inward and are more likely to intersect, so that adjacent fire holes m can ignite each other, and there is no need to set up an overlapping ignition structure, which simplifies the structure of the outer fire cover, reduces the processing difficulty, and reduces the processing cost; in addition, in the combustion state, due to the intersection of flames between adjacent fire holes m, adjacent fire holes m can stabilize the flames with each other, thereby effectively preventing flame separation; in addition, the second outer fire cover C arranges the fire holes m on the inner circumferential surface, so that the second outer fire cover C can be directly ignited by the ignited inner fire cover, and there is no need to set up an additional flame transfer hole (such as the fire guide channel in Example 7).

[0146] Among them, Fig.13 As shown, the third fire ring e is composed of the fourth fire plate 140 and the fifth fire plate 150 with relatively large inner and outer diameters, and the fourth fire ring f is composed of the fourth fire plate 140 and the fifth fire plate 150 with relatively small inner and outer diameters.

[0147] Specifically, Fig.12 , 13 As shown, the third fire ring e includes a fourth fire plate 140 and a fifth fire plate 150 which have the same inner diameter and outer diameter and are stacked in the same direction, and the fourth fold 142 on the fourth fire plate 140 and the fifth fold 152 on the fifth fire plate 150 below are axially aligned one by one.

[0148] The fourth fire-outlet ring f includes a fourth fire-outlet plate 140 with the same inner diameter and outer diameter and stacked in the same direction, and two fifth fire-outlet plates 150 located on the fourth fire-outlet plate 140, and the fourth fold 142 on the fourth fire-outlet plate 140 and the fifth fold 152 on the fifth fire-outlet plate 150 are axially aligned one by one.

[0149] Of course, the third fire-outlet ring e and the fourth fire-outlet ring f may also include more fifth fire-outlet pieces 150 and / or fourth fire-outlet pieces 140, which is not limited here.

[0150] The second outer fire cover C further comprises an annular third top sheet 610 arranged on the third fire outlet ring e and an annular fourth top sheet 620 for being arranged on the fourth fire outlet ring f, and a third base 920 located below the fourth fire outlet ring f;

[0151] The top surface of the outer cylinder 700 is provided with an annular end surface 710 extending into the outer cylinder 700;

[0152] The third fire-outlet ring e and the fourth fire-outlet ring f are connected by a connecting ring 910, and the connecting ring 910 includes a body, an upper connecting ring 911 connected to the upper port of the body, and a lower connecting ring 912 connected to the lower port of the body, wherein:

[0153] The third top sheet 610, the third fire ring e, and the annular end face 710 of the outer cylinder 700 are fixed to the upper connecting ring 911 in sequence through the third rivet 611, and the fourth top sheet 620, the fourth fire ring f, the lower connecting ring 912, and the third base 920 are fixed together through the fourth rivet 621.

[0154] Specifically, the third top sheet 610, the annular end face 710, and the upper connecting ring 911 of the connecting ring 910 are respectively aligned with the fourth rivet hole 144 and the fifth rivet hole 154 in the third fire outlet circle e, and the third top sheet rivet hole, the annular end face rivet hole 730 and the upper connecting ring rivet hole 915 are respectively aligned one by one. The fourth rivet hole 144, the fifth rivet hole 154, the annular end face rivet hole 730 and the upper connecting ring rivet hole 915 in the third fire outlet circle e are aligned one by one up and down and are riveted fixed by the third rivet 611.

[0155] The fourth top sheet 620, the lower connecting ring 912 of the connecting ring 910, and the fourth rivet holes 144 and the fifth rivet holes 154 in the fourth fire outlet circle f on the third base 920 are respectively aligned with the fourth top sheet rivet holes, the lower connecting ring rivet holes 916, and the third base rivet holes 921. The fourth rivet holes 144, the fifth rivet holes 154, the fourth top sheet rivet holes, the lower connecting ring rivet holes 916, and the third base rivet holes 921 in the fourth fire outlet circle f are aligned one by one and riveted fixed by the fourth rivet 621.

[0156] Since the height of the fourth rivet hole 144 is flush with the fourth hem 142 and the height of the fifth rivet hole 154 is flush with the fifth hem 152, the fifth fire-outlet piece 150 and the fourth fire-outlet piece 140 are fixed horizontally.

[0157] Each fire outlet groove h is surrounded by the third top sheet 610, the fourth top sheet 620, the fourth fire outlet sheet 140 or the fifth fire outlet sheet 150 located above, and the fourth fire outlet sheet 140, the fifth fire outlet sheet 150 or the third base 920 located below to form a fire outlet m. In the third fire outlet circle e and the fourth fire outlet circle f, the fifth fire outlet sheet 150 is located below the fourth fire outlet sheet 140. Since the fifth frill 152 on the fifth fire outlet sheet 150 is lower than the fourth frill 142 on the fourth fire outlet sheet 140, the height of the fire outlet m formed is lower than the height of the fire outlet m formed by the fourth fire outlet sheet 140, so it has a smaller fire outlet area, can form a better mixture with the surrounding air, so as to fully burn, and burn below the root of the upper fire outlet, which can increase the root temperature of the upper fire outlet, thereby effectively avoiding the flame separation of the upper fire outlet, having a flame stabilizing effect, and making the combustion stable.

[0158] The annular end surface 710 and the upper connecting ring 911 of the connecting ring 910 are respectively provided with a third connecting hole 720 and a fourth connecting hole 913 which are aligned one-to-one with and connected to the fourth air inlet hole 143 and the fifth air inlet hole 153 on the third fire-emitting ring e, and the lower connecting ring 912 of the connecting ring 910 and the third base 920 are respectively provided with a fifth connecting hole 914 and a sixth connecting hole 922 which are aligned one-to-one with and connected to the fourth air inlet hole 143 and the fifth air inlet hole 153 on the fourth fire-emitting ring f. Then, in the third fire-emitting ring e, the fourth air inlet hole 143, the fifth air inlet hole 153, the third connecting hole 720 and the fourth connecting hole 913 are aligned one-to-one with and connected to form an air inlet passage; in the fourth fire-emitting ring f, the fourth air inlet hole 143, the fifth air inlet hole 153, the fifth connecting hole 914 and the sixth connecting hole 922 are aligned one-to-one with and connected to form an air inlet passage.

[0159] The air cavity on the fourth fire outlet plate 140 and the fifth fire outlet plate 150 and the adjacent third top plate 610, fourth top plate 620, fourth fire outlet plate 140 or fifth fire outlet plate 150 above, and the adjacent third top plate 610, fourth top plate 620 or third base 920 below enclose an air inlet cavity, and each air inlet cavity is circumferentially connected to the corresponding air inlet channel, so that the static pressure head of each fire outlet hole m is consistent.

[0160] Further, such as Fig.10 , 11As shown, in order to seal the air inlet cavity, the outer edge of the fourth fire-outlet plate body 141 is folded and flattened in the same direction as the fourth fold 142 to form a second sealing edge 145, and the second sealing edge 145 has the same height as the fourth fold 142; the outer edge of the fifth fire-outlet plate body 151 is folded and flattened in the same direction as the fifth fold 152 to form a third sealing edge 155, and the third sealing edge 155 has the same height as the fifth fold 152.

[0161] In this embodiment, the outer cylinder 700 is located at the periphery of the third fire outlet circle e and the fourth fire outlet circle f. When the outer cylinder 700 is covered on the bottom plate of the burner, a higher and larger mixing chamber s can be formed, thereby facilitating sufficient mixing of air and gas in the mixing chamber s.

[0162] Furthermore, if Fig.13 , 14 As shown, a flow equalizing plate 930 is further provided between the bottom end of the fourth fire outlet ring f and the inner wall of the outer cylinder 700 , and an axially penetrating flow equalizing hole 933 is provided on the flow equalizing plate 930 .

[0163] Specifically, the blast gas stove uses a blower to provide primary air, and its primary air volume is much larger than that of the atmospheric gas stove. Therefore, the airflow velocity at the fire outlet is naturally much larger, which is prone to flame separation. By setting the flow equalizer 930, the airflow rate of the third fire outlet ring e located on the relatively outer side can be limited, so that the airflow rate of the fourth fire outlet ring f located on the relatively inner side will be relatively increased, thereby adjusting the problem of inconsistent static pressure heads of the inner and outer fire outlet rings, and also improving the flame separation problem during cold start.

[0164] In addition, although the fourth fire ring f located on the relatively inner side is farther from the bottom of the pot than the third fire ring e located on the relatively outer side, in practice, the fourth fire ring f located on the relatively inner side is in a high temperature zone and is easier to burn red. The flow equalizing plate 930 increases the air flow rate, which can slow down the burning trend and thus extend the service life.

[0165] Specifically, the equalizing plate 930 is in a circular ring shape, and its inner edge is fixed to the bottom of the third base 920 by the fourth rivet 621. The outer edge of the equalizing plate 930 extends toward the inner wall of the outer cylinder 700 and contacts the inner wall of the outer cylinder 700. In order to avoid affecting the air intake of the fourth fire outlet ring f, the inner edge of the equalizing plate 930 is aligned with and connected to the fifth air intake holes 153 on the lower connecting ring 912, and an air intake groove 932 is provided; the inner edge of the equalizing plate 930 is provided with an equalizing plate rivet hole 931 corresponding to the rivet hole in the fourth fire outlet ring f, and the equalizing plate 930 is riveted and fixed to the fourth fire outlet ring f by the fourth rivet 621.

[0166] Furthermore, a plurality of flow balancing holes 933 are arranged on the flow balancing plate 930 at intervals along the circumferential direction to form a circle.

[0167] Example 9

[0168] like Figures 15 to 18 The illustrated embodiment 9 provides a composite fire cover, comprising an ejector D, the first inner fire cover A in embodiment 6 and the second outer fire cover C in embodiment 8, wherein the first inner fire cover A is disposed at the center of the second outer fire cover C.

[0169] like Fig.15 , 16 As shown, the ejector D includes a disc-shaped base plate 810, and at least one external ejector tube 821 for connecting to the second external fire cover C is provided on the base plate 810.

[0170] like Fig.18 As shown, the lower end of the outer cylinder 700 is provided with a skirt 12, and the ring edge 813 on the chassis 810 is riveted to the skirt 12, so as to realize the riveting fixation between the ejector D and the second outer fire cover C to form a composite fire cover. In this way, the ejector D and the second outer fire cover C can be produced and assembled as a whole, and the open flame test can be completed before the assembly of the flow water to ensure the air tightness of the mixing chamber during subsequent use; and in the subsequent use process, when inspecting and disassembling, the ejector D and the second outer fire cover C can be taken out as a whole, which will not affect the sealing problem of the mixing chamber s. When restoring and installing after inspection, it only needs to be positioned (for example, aligning with the porcelain needle t) and gently put in as a whole, which is very convenient and easy to use, and effectively solves the technical problems that the matching mode of the ejector and the sheet metal fire cover of the gas stove in the prior art leads to the inconvenience and difficulty of disassembly of the burner inspection and the lack of air tightness of the mixing chamber due to disassembly.

[0171] Furthermore, the external ejection tube 821 is set independently of the chassis 810, and the external ejection tube 821 is assembled on the chassis 810. Specifically, the chassis 810 is provided with a mounting hole 811 for assembling the external ejection tube 821, and the external ejection tube 821 is installed in the mounting hole 811 and fixed to the chassis 810.

[0172] Furthermore, the external ejection tube 821 is a non-vertical tube horizontally arranged on the chassis 810 and extending in a circumferential bending direction (the non-vertical tube is formed by a tube body 8211 and a sealing plate 8212 fixedly sealed on the tube body 8211). Correspondingly, the mounting hole 811 is an arc-shaped hole, and a first ejection rivet hole 812 is provided around the mounting hole 811. The non-vertical tube is laid flat on the arc-shaped hole and is riveted and fixed to the chassis 810 at the first ejection rivet hole 812 by expansion tube riveting. The external ejection tube 821 can be a die-casting or a sheet metal part.

[0173] Furthermore, a first central axis hole 830 for passing the low-fire mixing tube 851 is opened at the center of the chassis 810 .

[0174] The bottom end of the small fire mixing tube 851 is connected to the inner nozzle and the air cavity, and the top end of the small fire mixing tube 851 can be fixed on the chassis 810 through a small fire connecting seat K and connected to the first inner fire cover A. Of course, the small fire mixing tube 851 can also be fixed by other means, which is not limited here.

[0175] It should be noted that since there is no need to use the low-fire mixing tube 851 to fix the second outer fire cover C, the overall structure is further simplified, the manufacturing process of the low-fire mixing tube 851 is simplified, and the cost is saved.

[0176] The ejector D also includes a heat insulation pad 90, which is arranged between the base plate 810 and the second outer fire cover C.

[0177] Specifically, the thermal insulation pad 90 is further provided with a second central axis hole 92 corresponding to the first central axis hole 830 , and through holes 91 are provided on both sides of the second central axis hole 92 corresponding to the second rivet holes 840 .

[0178] The heat insulation pad 90 can reduce the heat transfer from the sheet metal fire cover downward, which reduces the temperature rise of the non-heating area below (such as the countertop, knob, and the inside of the stove) on the one hand, and reduces heat loss on the other hand, improves the user experience and thermal efficiency. In addition, the heat insulation pad 90 also strengthens the sealing of the connection between the sheet metal fire cover and the ejector D, which can effectively prevent the mixing chamber s from leaking.

[0179] like Fig.16 , 17 As shown, a boss 850 is provided at the center of the base 810, the thermal insulation pad 90 is laid on the boss 850, and the first inner fire cover A is arranged on the thermal insulation pad 90. The setting of the boss 850 adjusts the setting height of the first inner fire cover A, but reduces the volume of the mixing chamber s, and needs to be set according to specific usage requirements.

[0180] Furthermore, if Fig.18 As shown, the chassis 810 is also formed with a second rivet hole 840 for directly riveting the second outer fire cover C. The chassis 810 is fixed integrally with the second outer fire cover C at the second rivet hole 840 by expansion tube riveting.

[0181] Specifically, the two second ejector rivet holes 840 are relatively arranged on both sides of the first central axis hole 830, and the ejector D is riveted to the second outer fire cover C on both sides of the first inner fire cover A. The above-mentioned composite fire cover is produced and sold as an independent product, and the open flame test is completed before assembly, which can ensure that the airtight quality is very stable during subsequent use, which can not only solve the sealing problem of the mixing chamber s, but also solve the problems of inconvenience in disassembly and installation. When installing, you only need to align the porcelain needle t and gently insert it, which is very convenient and easy to use. When it needs to be inspected and disassembled, the second outer fire cover C and the ejector D can be directly removed together, which is very convenient.

[0182] Example 10

[0183] like Fig.19 The illustrated embodiment 10 provides a sixth fire-outlet piece 160, which includes a sixth fire-outlet piece body 161. The sixth fire-outlet piece body 161 is circular, and its outer edges are folded once toward the upper and lower surfaces respectively through a folding and flattening process to form a plurality of sixth folds 162 arranged at intervals along the circumferential direction, and the sixth folds 162 are alternately provided on the upper and lower surfaces of the sixth fire-outlet piece body 161.

[0184] The two adjacent sixth folds 162 located on the same surface of the sixth fire-outlet plate body 161 enclose a fire-outlet groove h on the sixth fire-outlet plate body 161 , and the sixth fire-outlet plate body 161 is also provided with an axially penetrating sixth air inlet hole 163 and a sixth rivet hole 164 .

[0185] The sixth fire-outlet piece 160 is different from the first fire-outlet piece 110 in Example 1 in that the sixth fire-outlet piece 160 is provided with sixth frills 162 on both upper and lower surfaces of the sixth fire-outlet piece body 161, and the sixth frills 162 are alternately arranged on the upper and lower surfaces of the sixth fire-outlet piece body 161, and an air cavity is formed on the upper and lower surfaces of the sixth fire-outlet piece 160 respectively, and the sixth frills 162 on the upper surface of the sixth fire-outlet piece body 161 are formed by folding inwards, and the sixth frills 162 on the lower surface are formed by folding outwards, as shown in FIG. Fig.19 , 20 As shown; and in the first fire-out sheet 110, the first fold 112 is only provided on one side of the first fire-out sheet body 111, and the first fire-out sheet 110 is formed with only one air cavity, as Figure 1 shown.

[0186] Embodiment 11

[0187] like Figures 21-22 The embodiment 11 shown provides a second inner fire cover Q, which includes a fifth fire ring arranged on a fourth base 10 and a fifth top sheet 20 arranged above the fifth fire ring. The fifth fire ring includes the first fire sheet 110 in embodiment 1 and the sixth fire sheet 160 in embodiment 10.

[0188] Specifically, a first fire-outlet sheet 110 is stacked above the sixth fire-outlet sheet 160, and another sixth fire-outlet sheet 160 is stacked in the opposite direction below the sixth fire-outlet sheet 160. The first hem 112 on the first fire-outlet sheet 110 faces downward and is axially aligned one by one with the sixth hem 162 on the upper surface of the sixth fire-outlet sheet 160 above; the sixth hem 162 on the lower sixth fire-outlet sheet 160 facing upward is axially aligned one by one with the sixth hem 162 on the lower surface of the sixth fire-outlet sheet 160 above;

[0189] The fire outlet grooves h on the first fire outlet piece 110 and the sixth fire outlet piece 160 are combined with the first fire outlet piece 110 or the sixth fire outlet piece 160 adjacent above and the sixth fire outlet piece 160 or the fourth base 10 adjacent below to form the fire outlet hole m.

[0190] In addition, the sixth folds 162 on the sixth fire-outlet piece 160 are alternately arranged on the upper and lower surfaces of the sixth fire-outlet piece body 161, so the fire holes m are evenly distributed on the outer peripheral surface of the second inner fire cover Q in the circumferential direction.

[0191] In addition, the fifth fire-outlet ring may also be provided with fewer or more first fire-outlet pieces 110 and / or sixth fire-outlet pieces 160, which is not limited here.

[0192] In addition, the cross-sections of the fifth top sheet 20 and the fourth base 10 are both circular, the fifth top sheet 20 is provided with a fifth top sheet rivet hole, and the fourth base 10 is provided with a fourth base rivet hole 11, the fifth top sheet rivet hole, each first rivet hole 114, each sixth rivet hole 163, and the fourth base rivet hole 11 are aligned one by one along the axial direction to allow the fifth rivet 21 to be inserted and riveted to form a second inner fire cover Q.

[0193] The sixth air inlet holes 163 on the sixth fire-emitting piece body 161 include outer circle sixth air inlet holes 1631 arranged one by one corresponding to the sixth hem 162 on one side and middle circle sixth air inlet holes 1633 arranged one by one corresponding to the sixth hem 162 on the other side, and also include inner circle sixth air inlet holes 1632 arranged in the center;

[0194] The fourth base 10 is provided with seventh connection holes, including outer circle seventh connection holes 12 arranged in one-to-one correspondence with the outer circle sixth air inlet holes 1631, middle circle seventh connection holes 14 arranged in one-to-one correspondence with the middle circle sixth air inlet holes 1633, and inner circle seventh connection holes 13 arranged in one-to-one correspondence with the inner circle sixth air inlet holes 1632;

[0195] The first air inlet hole 113 , the sixth air inlet hole 163 and the seventh connecting hole are aligned and connected one by one to form air inlet channels respectively.

[0196] The air cavities on the first fire outlet plate 110 and the sixth fire outlet plate 160 and the adjacent fifth top plate 20, the sixth fire outlet plate 160 or the fourth base 10 enclose an air inlet and outlet cavity, and each air inlet cavity is circumferentially connected to each air inlet channel so that the static pressure head of each fire outlet hole m is consistent.

[0197] Since the above three circles of air inlet holes are arranged on the sixth fire outlet plate 160 and the fourth base 10, the air inlet holes are evenly distributed on the fire outlet plate. Thus, the static pressure head of each fire outlet hole m is more consistent, and the heat dissipation of the formed second inner fire cover Q is also better.

[0198] Example 12

[0199] Embodiment 12 provides a third inner fire cover L, which includes a sixth fire ring disposed on a fifth base and a sixth top sheet disposed above the sixth fire ring. The sixth fire ring includes the first fire sheet 110 in Embodiment 1 and the sixth fire sheet 160 in Embodiment 6.

[0200] Specifically, the sixth fire-outlet sheet 160 is stacked above the first fire-outlet sheet 110 , the first fold 112 on the first fire-outlet sheet 110 faces upward, and a gasket (or multiple gaskets) is sandwiched between the first fire-outlet sheet 110 and the sixth fire-outlet sheet 160 .

[0201] The fire outlet grooves h on the first fire outlet piece 110 and the sixth fire outlet piece 160 and the sixth top piece or gasket adjacent above, and the gasket or fifth base adjacent below form a fire outlet hole.

[0202] The gasket is provided with a connecting hole corresponding to the first air inlet hole on the first fire outlet piece 110 and the sixth air inlet hole on the sixth fire outlet piece 160, and the fifth base is provided with an eighth connecting hole;

[0203] The sixth air inlet hole, the connecting hole, the first air inlet hole 113 and the eighth connecting hole are aligned and connected one by one to form air inlet passages respectively.

[0204] The air cavity on the sixth fire outlet plate 160 and the first fire outlet plate 110 and the adjacent sixth top plate or gasket encloses an air inlet cavity, and the air inlet cavity is circumferentially connected to each air inlet channel so that the static pressure head of each fire outlet hole m is consistent.

[0205] It should be noted that:

[0206] The first fire-outlet piece 110, the second fire-outlet piece 120, the third fire-outlet piece 130, the fourth fire-outlet piece 140, the fifth fire-outlet piece 150, the sixth fire-outlet piece 160, and the seventh fire-outlet piece 170 are all fire-outlet pieces described in the present application;

[0207] The first fire-outlet piece body 111, the second fire-outlet piece body 121, the third fire-outlet piece body 131, the fourth fire-outlet piece body 141, the fifth fire-outlet piece body 151, and the sixth fire-outlet piece body 161 are all fire-outlet piece bodies described in the present application;

[0208] The first hem 112, the second hem 122, the third hem 132, the fourth hem 142, the fifth hem 152, and the sixth hem 162 are all hems described in the present application;

[0209] The first air inlet hole 113, the second air inlet hole 123, the third air inlet hole 133, the fourth air inlet hole 143, the fifth air inlet hole 153, and the sixth air inlet hole 163 are all the air inlet holes described in the present application;

[0210] The first inner fire cover A, the first outer fire cover B, the second outer fire cover C, the second inner fire cover Q, and the third inner fire cover L are all fire covers described in the present application;

[0211] The first fire ring, the second fire ring, the third fire ring, the fourth fire ring, the fifth fire ring, and the sixth fire ring are all the fire rings described in this application;

[0212] The first sealing edge 136, the second sealing edge 145, and the third sealing edge 155 are all the sealing edges described;

[0213] The first sealing edge 136, the second sealing edge 145, and the third sealing edge 155 are all the sealing edges described;

[0214] The first top sheet 200, the second top sheet 400, the third top sheet 610, the fourth top sheet 620, the fifth top sheet 20, and the sixth top sheet are all the top sheets described above;

[0215] The first base 300, the second base 500, the third base 920, the fourth base 10, and the fifth base are all the bases described;

[0216] And so on, the same goes for other similar cases.

[0217] It should be understood that although the terms "first", "second", etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are used only to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit without departing from the scope of the exemplary embodiments.

[0218] The directional terms such as outer, middle, inner, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0219] The above is only a preferred embodiment of the present application, and is not any formal or substantial limitation to the present application. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the method of the present application, and these improvements and supplements should also be regarded as the protection scope of the present utility model. Any technician familiar with this profession can make some changes, modifications and evolutions of the technical content disclosed above without departing from the spirit and scope of the present application, which are equivalent embodiments of the present application; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the substantial technology of the present application are still within the scope of the technical solution of the present application.

Claims

1. A fire-discharging sheet, characterized in that: It comprises a fire-outlet plate body, wherein a plurality of frills arranged at intervals along the circumferential direction are formed on the outer edge and / or the inner edge of the fire-outlet plate body; The two adjacent frills on the same surface of the fire outlet plate body are enclosed on the fire outlet plate body to form a fire outlet groove; Each of the frills on the same surface of the fire-emitting piece body protrudes from the fire-emitting piece body and is surrounded by the fire-emitting piece body to form an air cavity; The fire outlet plate body is also provided with an axially penetrating air inlet hole; The fire outlet groove and the air inlet hole are both communicated with the air cavity.

2. A fire-discharging piece according to claim 1, characterized in that: Each of the frills is distributed and rotated along the same direction on the fire outlet plate body.

3. A fire-discharging sheet as claimed in claim 1, characterized in that: The fire-emitting piece body is ring-shaped, and the frill is formed on the outer edge or inner edge of the fire-emitting piece body. A sealing edge with the same height as the frill is formed on the inner edge or outer edge of the fire-emitting piece body where the frill is not provided, and the sealing edge and each of the frills are located on the same surface of the same fire-emitting piece body.

4. A fire cover, characterized in that: It comprises the fire-discharging piece as described in any one of claims 1 to 3.

5. A fire cover as claimed in claim 4, characterized in that: The frills are all located on the same surface of the fire-discharging plate body, or the frills are respectively located on the upper and lower surfaces of the fire-discharging plate body; The fire cover comprises a fire outlet ring, and the fire outlet ring comprises at least two fire outlet plates stacked in the same direction, and the hems on the upper and lower fire outlet plates are aligned one by one along the axial direction; The fire outlet groove on the fire outlet plate and another fire outlet plate adjacent to the upper side are combined to form a fire outlet hole; The air inlet holes on each of the fire outlet plates are connected up and down to form an air inlet channel; The air cavity on each of the fire outlet plates is enclosed with another adjacent fire outlet plate to form an air inlet cavity, and the air inlet cavity is communicated with the air inlet channel.

6. A fire cover as claimed in claim 5, characterized in that: The frills are all located on the same surface of the fire outlet plate body, the fire outlet plate body between two adjacent frills on the fire outlet plate is punched out to form a notch, and the width of the notch along the circumferential direction is smaller than the width of the frill along the circumferential direction; The fire cover comprises a fire outlet ring, and the fire outlet ring comprises at least two fire outlet sheets stacked in opposite directions up and down; The frills on the two adjacent fire outlet plates are staggered in the circumferential direction, and the fire outlet grooves on the fire outlet plates and the frills on the adjacent fire outlet plates are combined to form fire outlet holes; The air inlet holes on each of the fire outlet plates are connected up and down to form an air inlet channel; The air cavity on each of the fire outlet pieces is enclosed with the adjacent fire outlet pieces to form an air inlet cavity, and the air inlet cavity is communicated with the air inlet channel.

7. A fire cover as claimed in claim 5, characterized in that: The fire-outlet piece is annular, and the frills are all located on the same surface of the fire-outlet piece body; The fire cover comprises at least two upper and lower fire outlet rings which are arranged in a nested manner, and the inner diameter of the upper fire outlet ring is larger than the inner diameter of the lower fire outlet ring; Each of the fire outlet rings includes at least one fire outlet plate, and the fire outlet groove on the fire outlet plate is combined with another fire outlet plate adjacent to the upper side to form a fire outlet hole, thereby forming two fire outlet surfaces expanding from the inside to the outside along the radial direction of the outer fire cover; In the same fire outlet circle, the air inlet holes on each fire outlet piece are connected up and down to form an air inlet channel, the air cavity on each fire outlet piece is enclosed with another adjacent fire outlet piece to form an air inlet cavity, and the air inlet cavity is connected with the air inlet channel.

8. A fire cover as claimed in claim 7, characterized in that: The frill is located on the inner edge of the fire-discharging piece; The fire cover also includes an outer cylinder body that is arranged outside each fire outlet ring. One end of the outer cylinder body is provided with an annular end face. The annular end face is fixedly connected to the fire outlet ring located in the outermost circle and is communicated with the air inlet hole on the fire outlet plate in the fire outlet ring in the outermost circle. The other end of the outer cylinder body extends axially and exceeds each of the fire outlet rings.

9. A fire cover as claimed in claim 8, characterized in that: A flow equalizing plate is also provided between the inner wall of the outer cylinder and the fire outlet ring, and an axially penetrating flow equalizing hole is provided on the flow equalizing plate.

10. A fire cover as claimed in claim 4, characterized in that: The frills are all located on the same surface of the fire-discharging plate body, or the frills are respectively located on the upper and lower surfaces of the fire-discharging plate body; The fire cover comprises a fire outlet ring, the fire outlet ring comprises at least one fire outlet plate and at least one gasket stacked up and down, and the gasket is provided with a connecting hole corresponding to the air inlet hole of the fire outlet plate; wherein: The fire outlet groove on the fire outlet plate and the gasket form a fire outlet hole; The air inlet hole on the fire outlet plate is connected with the connecting hole up and down to form an air inlet channel; The air cavity on the fire outlet plate and the gasket are combined to form an air intake cavity, and the air intake cavity is communicated with the air intake channel.

11. A fire cover according to any one of claims 5 to 10, characterized in that: In the same fire outlet ring, at least one of the fire outlet plates located relatively below has a folding number of edges less than that of the fire outlet plates located relatively above, so as to achieve flame stabilization.

12. A fire cover as claimed in claim 11, characterized in that: The fire outlet ring also includes a top sheet. The top sheet and the fire outlet sheets in the fire outlet ring are riveted and fixed in sequence. The fire outlet grooves on the fire outlet sheets adjacent to the top sheet are enclosed with the top sheet to form a fire outlet hole.

13. A fire cover as claimed in claim 12, characterized in that: The fire outlet ring also includes a base, the top plate, the fire outlet plate in the fire outlet ring, and the base are riveted and fixed in sequence, and the fire outlet groove on the fire outlet plate adjacent to the base is enclosed with the base to form a fire outlet hole.

14. A composite fire cover, characterized in that: The composite fire cover comprises an ejector and a fire cover as claimed in claim 8 or 9, wherein: The ejector comprises a chassis, and the chassis is provided with at least one external ejector tube for communicating with the fire cover; A skirt is provided at the lower end of the outer cylinder, and a ring is provided on the chassis of the ejector corresponding to the skirt. The skirt and the ring are riveted and fixed, so that the fire cover and the ejector are fixed as a whole.

15. A gas stove, characterized in that: The gas stove comprises the fire outlet piece as claimed in any one of claims 1 to 3, the fire cover as claimed in any one of claims 4 to 13 and / or the composite fire cover as claimed in claim 14.

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