CN119713271B

CN119713271B - Burner and kitchen range

Info

Publication number: CN119713271B
Application number: CN202311275632.4A
Authority: CN
Inventors: 李国�; 胡杨; 欧伟成; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2025-10-31
Anticipated expiration: 2043-09-28
Also published as: CN119713271A

Abstract

This invention provides a burner and a cooktop. The burner includes a first base, a first ejector, and a first mixing section. Two first channels are formed on the first base, and a first nozzle is disposed at the outlet of each first channel. The first ejector is connected to the first base via a first rotating mechanism. The first mixing section is disposed at the other end of the first ejector and has a first opening at its top. When one end of the first ejector faces one of the first nozzles, the first mixing section is positioned in a first position; when one end of the first ejector faces the other first nozzle, the first mixing section is positioned in a second position. The burner of this invention enables cooktops using this burner to adapt to both Western cooking needs and the stir-frying requirements of Chinese cuisine.

Description

Burner and kitchen range

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a combustor and a kitchen range.

Background

Along with the continuous fusion and development of the eastern and western diet modes, the requirements of people on the power (firepower) regulation range of the gas cooker are wider and wider, the requirements on the firepower are uniform for western-style meals, and the requirements on small fire concentration and strong fire stir-frying for Chinese-style meals are met.

However, most burners of the prior art have a double injection pipe structure, namely, gas and air are respectively mixed through two injection pipes and respectively introduced into an outer ring gas channel and an inner ring gas channel (or a central gas channel), and outer ring flames and inner ring flames (or central flames) are generated by ignition. In addition, there is also a three-injection pipe and a single-injection pipe structure. The kitchen range is usually formed by two or three burners with the same injection pipe structure, so that the firepower of a single kitchen range is difficult to meet the cooking requirement of western-style food and the quick-frying requirement of Chinese food.

Disclosure of Invention

The present invention is directed to solving at least one of the problems discussed above and/or other problems in the prior art.

In order to achieve the purpose of the invention, the invention adopts the following technical scheme:

According to one aspect of the present invention, there is provided a burner comprising a first base, a first injection portion, and a first gas mixing portion. The first base is provided with two first channels, the air outlet of each first channel is provided with a first nozzle, the first injection part is connected to the first base through a first rotating mechanism, the first air mixing part is arranged at the other end of the first injection part, the top of the first air mixing part is provided with a first opening, when one end of the first injection part faces one of the first nozzles, the first air mixing part is arranged at a first position, and when one end of the first injection part faces the other one of the first nozzles, the first air mixing part is arranged at a second position.

According to one embodiment of the invention, the first rotating mechanism comprises a driving part, a gear and a first shell, the driving part is connected to the first base, the gear and an output shaft of the driving part are coaxially arranged, at least one part of the inner side wall of the first shell is provided with a rack meshed with the gear, and the first injection part is connected to the first shell.

According to one embodiment of the invention, the first casing extends axially between the air inlet of the first injection part and the first nozzle, and an air inlet through hole is formed at the air inlet corresponding to the first injection part, and the area of the air inlet through hole is larger than that of the air inlet of the first injection part.

According to an embodiment of the invention, the first nozzle protrudes beyond the periphery of the first base, and a gap is provided between the inner side wall of the first housing and the first base, and the gap is configured to avoid the first nozzle when the first housing rotates.

According to one embodiment of the invention, the first housing is provided with a first connecting lug extending outwards, the first connecting lug is provided with a first pin hole extending along the tangential direction of the first base, the first injection part is provided with a connecting piece, the connecting piece is provided with a second pin hole, and the first pin shaft penetrates through the first pin hole and the second pin hole so as to rotationally connect the first injection part to the first housing.

According to one embodiment of the invention, the connecting piece comprises a first connecting plate in a U shape and a second connecting plate connected to the first injection part, two end parts of the first connecting plate are respectively arranged on two sides of the first connecting lug, the second pin holes are respectively arranged on the two end parts of the first connecting plate, and the middle part of the first connecting plate is connected to the second connecting plate.

According to one embodiment of the present invention, the cross section of the first gas mixing part in the rotation plane is comma-shaped.

According to one embodiment of the invention, the burner further comprises a first fire cover with a first fire hole at the top and a first ignition needle connected to the outer side of the first gas mixing part, the shape of the first fire cover corresponds to that of the first gas mixing part, the first fire cover is covered at the first opening, a first fire transmission hole is arranged on the side wall of the first fire cover, and the needle head part of the first ignition needle corresponds to the first fire transmission hole.

According to an embodiment of the present invention, each of the first channels includes at least a first section, a second section and a third section that are sequentially communicated, the first section extends inward from the outer periphery of the first base to near the center of the first base, the second section extends along the axial direction of the first base, the third section extends outward from near the center of the first base to the outer periphery of the first base, and the first nozzle is disposed at the air outlet of the third section.

According to another aspect of the present invention, a cooktop is provided. The stove comprises the burner and a second burner. The second burner comprises a second gas mixing part with a second opening at the top, and the first gas mixing part is matched with the second gas mixing part so that flames of the first opening and the second opening are in a complete first shape.

One embodiment of the present invention has the following advantages or benefits:

The burner can set the first injection part at different working positions or be used independently through the first rotating mechanism, or form a combined burner with larger heat load with another burner, and the burner respectively has different first channels and first nozzles when the first gas mixing part is arranged at the first position and the second position, so that a kitchen range adopting the burner can not only adapt to the cooking needs of western-style food, but also meet the quick-frying needs of Chinese food.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 illustrates a perspective view of a burner assembly in a first position in accordance with an exemplary embodiment of the present invention.

Fig. 2 shows a perspective view of the burner of the hob shown in fig. 1 in a second position.

Fig. 3 shows a perspective view of a burner according to an exemplary embodiment of the present invention.

Fig. 4 shows an exploded view of the burner shown in fig. 3.

Fig. 5 shows a schematic view of a first rotary mechanism of the burner shown in fig. 3.

FIG. 6 shows a schematic view of a first passage of the burner shown in FIG. 5.

Fig. 7 shows a perspective view of a second burner according to an exemplary embodiment of the present invention.

Fig. 8 shows an internal schematic view of the second burner shown in fig. 7.

Fig. 9 shows an exploded view of the second burner shown in fig. 7.

Fig. 10 shows a diagram of overlap of a burner and a second burner according to an exemplary embodiment of the present invention.

Fig. 11 shows a perspective view of a panel assembly according to an exemplary embodiment of the present invention.

Fig. 12 shows an exploded view of the panel assembly shown in fig. 11.

Fig. 13 shows a top view of the panel assembly shown in fig. 11.

Fig. 14 shows a cross-sectional view of the panel assembly shown in fig. 13 along line A-A.

Wherein reference numerals are as follows:

1. A first burner; 11, a first injection part; 111, a connecting piece; 1111, second pin holes, 1112, first connecting plate, 1113, second connecting plate, 12, first gas mixing portion, 121, first opening, 13, first base, 131, first passage, 1311, first section, 1312, second section, 1313, third section, 132, first fixing leg, 14, first nozzle, 15, first fire cover, 151, first fire hole, 152, first fire hole, 16, first ignition needle, 2, second burner, 21, second gas mixing portion, 211, second opening, 212, first section, 213, second section, 2131, second passage, 2132, air-avoiding area, 22, second injection portion, 221, second injection cavity, 2211, contraction section, 2212, throat section, 3, primary diffuser section, 2214, second diffuser section, 222, nozzle mounting plate, 23, second fixing leg, 24, second fire cover, 241, second hole, 242, second fire hole, 25, second ignition needle, 16, first combustion needle, 2, second burner, 21, second gas mixing portion, 211, second opening, 212, first section, 213, second section, 2131, second passage, 2132, air-avoiding area, 22, second injection portion, 221, second injection cavity, 2211, 2212, shrinkage section, 2213, first throat section, third section, 2214, second diffusion section, 222, second diffusion section, 23, second fixing leg 24, second cover, 241, second hole, 242, second hole, third hole, 242, second ignition needle hole, 25, second ignition needle, 16, second hole, third hole, 31, third hole, 761, third hole, third, third hole group, 7631, third mounting hole, 77, pot support, 771, first pot support, 772, second pot support, 773, third pot support, 774, pot support main body, 775, pot support fixing piece.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

The terms "a," "an," "the," "said" are used to indicate the presence of one or more elements/components/etc., the terms "comprising" and "having" are intended to mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.

Fig. 1 and 2 show a hob according to an embodiment of the present invention. As shown in fig. 1 and 2, the cooktop may include a cooktop housing 6, a first burner 1, and a second burner 2. The cooktop shell 6 encloses a cooktop cavity forming at least a portion of housing the first burner 1 and the second burner 2. The first burner 1 and the second burner 2 are fixed to the bottom of the stove housing 6, respectively, and the top portions of the first burner 1 and the second burner 2 protrude upwardly out of the stove cavity.

According to an exemplary embodiment of the first burner 1, as shown in fig. 3 and 4, the first burner 1 comprises a first injection portion 11, a first gas mixing portion 12 and a first base 13. One end of the first injection part 11 is provided with a first gas mixing part 12, the top of the first gas mixing part 12 is provided with a first opening 121, and the shape of the first opening 121 is a first part of a first shape. The other end of the first injection part 11 is connected to the first base 13 through the first rotary mechanism 3, so that the first injection part 11 drives the first air mixing part 12 to be switched between a first position and a second position in a horizontal plane shown in fig. 1. The second burner 2 includes a second air mixing part 21, and a second opening 211 is formed at the top of the second air mixing part 21, and the second opening 211 has a second portion of the first shape. When the first air-mixing portion 12 is provided at the first position, the first burner 1 is used as a separate burner since no other burner is arranged at the first position. When the first air mixing part 12 is disposed at the second position, as shown in fig. 10, the second burner 2 is disposed at the second position corresponding to the second position, and the first air mixing part 12 is adapted to the second air mixing part 21 so that the flames of the first opening 121 and the second opening 211 take a complete first shape. Of course, when the second burner 2 may also be disposed at the first position, the first air mixing portion 12 and the second burner 2 constitute a combined burner when in the first position, and are used alone when in the second position. It is understood that the first shape is any shape that may include a first portion and a second portion, such as a circle, a quadrilateral, a triangle, etc., including but not limited to the shapes listed above, and the first portion and the second portion are divided by the first shape. For example, the first opening (121) of the first air mixing part 12 and the second opening (211) of the second air mixing part 21 are comma-shaped, and the first opening (121) and the second opening (211) are connected end to form a circle in a surrounding manner.

In addition, the first burner 1 further comprises a first fire cover 15 with a first fire hole 151 at the top and a first ignition needle 16 connected to the outer side (the side where the circular arc is located) of the first gas mixing part 12, wherein the shape of the first fire cover 15 corresponds to the shape of the first gas mixing part 12 and covers the first opening 121. The side wall of the first fire cover 15 is provided with a first fire transfer hole 152, and the needle head portion of the first ignition needle 16 corresponds to the first fire transfer hole 152.

According to an exemplary embodiment of the first base 13, as shown in fig. 5, the first base 13 is formed with two first passages 131, and the first burner 1 may further include first nozzles 14 respectively provided at air outlets of the two first passages 131. When the first air mixing part 12 is arranged at the first position, the air inlet of the first injection part 11 faces one of the first nozzles 14. When the first air mixing part 12 is arranged at the second position, the air inlet of the first injection part 11 faces the other first nozzle 14. The two first nozzles 14 respectively correspond to the two positions of the first gas mixing part 12, and air between the air inlet of the first injection part 11 and the first nozzle 14 is brought into the first injection part 11 through a negative pressure effect generated when the fuel gas in the first nozzles 14 enters the first injection part 11. Furthermore, the bottom equidistant ring of the first base 13 is provided with a plurality of first fixing legs 132 extending in the axial direction thereof, respectively, for connecting the first base 13 to the hob housing 6. It can be understood that in this embodiment, a first channel 131 is disposed on the first base 13 at a first position and a second position of the first air mixing portion 12. In other specific embodiments, a first channel 131 having one air inlet channel and two air outlet channels may be further disposed on the first base 13, where one air inlet channel is respectively connected to the two air outlet channels, and a control valve is disposed at the connection position to control the air inlet channel to selectively communicate with one of the air outlet channels.

According to an exemplary embodiment of the first channel 131, as shown in fig. 6, the first channel 131 includes at least a first section 1311, a second section 1312, and a third section 1313 which are sequentially connected, the first section 1311 extends inward from the outer periphery of the first base 13 to near the center of the first base 13, the second section 1312 extends along the axial direction of the first base 13, the third section 1313 extends outward from near the center of the first base 13 to the outer periphery of the first base 13, the first section 1311 and the third section 1313 extend in the radial direction of the first base 13 and are disposed in parallel, and the first section 1311 is located below the third section 1313, the first nozzle 14 is disposed at the air outlet of the third section 1313, and the air inlet of the first section 1311 is provided with a joint for connecting an air intake hose. It will be appreciated that the first channel 131 includes, but is not limited to, the above structure, for example, the first channel 131 may further include one, two or more sections that are arbitrarily communicated, and the air inlet of the first channel 131 may be disposed at a position where the air inlet hose is conveniently connected, and the air outlet of the first channel 131 may be adapted to the position of the air inlet of the first ejector 11 when the first air mixing stage 12 is disposed at the first position or the second position.

According to an exemplary embodiment of the first rotation mechanism 3, as shown in fig. 4, the first rotation mechanism 3 may include a driving part 31, a gear (not shown), and a first housing 32. The driving part 31 may be an ac motor, a dc motor, a stepper motor, or some other driving member adapted to rotate the first injecting part 11 and the first air mixing part 12 in a narrow space. The driving portion 31 is connected to the first base 13 such that an output shaft of the driving portion 31 extends in an axial direction of the first base 13, so that a gear is connected to and coaxially disposed with the output shaft of the driving portion 31. One end of the first housing 32 is open and the open end thereof is mounted toward the first base 13, and at least a portion of the inner side wall of the first housing 32 (the side wall of the first housing 32 facing away from the first ejection portion 11 as shown in fig. 4) is provided with a rack 321 engaged with a gear. The first injection portion 11 is connected to the first housing 32. It will be appreciated that the number of gears may include, but is not limited to, only one, and when the distance from the output shaft to the rack 321 is large, one gear may prevent the first housing 32 from being coaxially connected to the first base 13, and two or more gears may be provided for transmission conversion.

In some specific embodiments, the inner side wall of the first housing 32 corresponding to the opening may extend to a position between the air inlet of the first injection portion 11 and the first nozzle 14 toward the bottom of the first base 13, so that the first housing 32 does not form a barrier between the first nozzle 14 and the first injection portion 11, and an air inlet through hole 322 is formed at the air inlet of the first housing 32 corresponding to the first injection portion 11 as shown in fig. 4 and 5, and the area of the air inlet through hole 322 is larger than the area of the air inlet of the first injection portion 11, so that more air can be inhaled when the fuel gas enters the first injection portion 11 from the first nozzle 14. Of course, in other specific embodiments, the inner side wall of the first housing 32 does not extend to a position between the air inlet of the first injection portion 11 and the first nozzle 14, and the air inlet through hole 322 may not be provided.

Further, as shown in fig. 6, the first nozzle 14 extends out of the outer periphery of the first base 13, so as to avoid interference between the first housing 32 and the first nozzle 14 when the first injection portion 11 and the first air mixing portion 12 are driven to rotate, a gap 4 may be provided between the inner side wall of the first housing 32 and the first base 13, so that the first housing 32 can avoid the first nozzle 14 when the first housing 32 rotates.

In order to clean the positions of the first injection part 11 and the lower side of the first air mixing part 12 or disassemble the panel assembly 7, the first injection part 11 and the first air mixing part 12 need to be rotatably connected to the first housing 32, so that the first injection part 11 and the first air mixing part 12 can be lifted upwards relative to the direction of the plane in which the panel assembly 7 is located, for example, upwards along the vertical direction as shown in fig. 4. Thus, a first connection lug 323 may be provided to extend outwardly from the first housing 32, and the first connection lug 323 may be provided with a first pin hole 3231 extending in a tangential direction of the first base 13. Correspondingly, the first injection part 11 is provided with a connecting piece 111, the connecting piece 111 is provided with a second pin hole 1111, and the first pin shaft 5 passes through the first pin hole 3231 and the second pin hole 1111, and then the first injection part 11 can be rotationally connected to the first housing 32.

According to one exemplary embodiment of the connection member 111, as shown in fig. 4, the connection member 111 may include a first connection plate 1112 and a second connection plate 1113. The first connection plate 1112 is in a horizontal and symmetrically placed "U" shape, and two ends of the first connection plate 1112 are respectively provided with the second pin holes 1111, and the two ends are respectively provided at both sides of the first connection lug 323. The second connection plate 1113 has a straight plate shape, and the approximately middle position of the second connection plate 1113 is used for the end part of the injection part of the first injection part 11, which is far away from the first gas mixing part 12, to pass through, and the approximately circumferential position of the second connection plate 1113 is connected to the middle part of the first connection plate 1112 through a bolt.

According to an exemplary embodiment of the second air mixing section 21, as shown in fig. 7, the second air mixing section 21 includes a first section 212 and a second section 213 disposed from top to bottom in the axial direction thereof. The top of the first section 212 is provided with a second opening 211, at least a portion of the top of the second section 213 being in communication with the first section 212. For example, when the cross-sectional shape of the first section 212 perpendicular to the axial direction of the second air-mixing portion 21 is configured as the second portion of the first shape, the shape of the top surface of the second section 213 is configured as the first shape, and the entire bottom surface constituting the first section 212 communicates with the partial top surface of the second section 213, the void region 2132 of the first air-mixing portion 12 is formed at the portion of the second section 213 not communicating with the first section 212, so that the first air-mixing portion 12 can be provided in the void region 2132 and the first air-mixing portion 12 can be supported by the second air-mixing portion 21 when the first air-mixing portion 12 is fitted to the second air-mixing portion 21.

According to an exemplary embodiment of the second section 213, as shown in fig. 8, a second channel 2131 extending axially around a portion of the second section 213 is further provided in the second section 213, the bottom of the second channel 2131 rises in a spiral shape, and the top of the second channel 2131 communicates with the first section 212, so that the gas mixture can rise smoothly in the second section 213, avoiding turbulent gas flow generated by the gas mixture striking the inner side wall of the second section 213.

In the above embodiment, the second burner 2 further includes the second injection portion 22 connected to the side of the second section 213 remote from the first section 212, and the second injection portion 22 communicates with the bottom end of the second passage 2131. Specifically, the second injection portion 22 encloses a second injection chamber 221, and the second injection chamber 221 may include a constriction 2211, a throat 2212, a primary diffuser 2213, and a secondary diffuser 2214 distributed along a gas flow direction (right-to-left direction in fig. 8). A nozzle mounting plate 222 is provided at an end of the convergent section 2211 remote from the throat section 2212 for mounting a second nozzle, and a part of air is sucked by negative pressure to form a mixture gas when the gas enters the convergent section 2211 from the indoor gas supply line. The secondary diffuser 2214 is a cavity structure larger than the primary expansion section, and is communicated with the bottom end of the second channel 2131 of the second section 213, and the gas mixture is guided to gradually rise into the first section 212 through the spiral rising second channel 2131. As the initial gas enters the constrictor 2211, the cross-sectional area of the constrictor 2211 gradually decreases, and the gas forms a jet to produce entrainment flow, and a negative pressure zone occurs due to the high velocity of the gas flow, thereby absorbing a portion of the air from the nozzle and entering the constrictor 2211 with the gas to produce a mixture. After the mixed gas enters the throat section 2212, the cross-sectional area of the throat section 2212 is kept unchanged along with the flow of the gas, so that the mixed gas can exchange kinetic energy in the throat section 2212, and the velocity field of the mixed gas is gradually and uniformly distributed in the flowing process. Then the mixed gas enters the primary diffusion section 2213, the pressure is increased due to the reduction of the flow velocity, and partial dynamic pressure of the mixed gas is changed into static pressure, so that the pressure of the mixed gas is higher than the pressure of the injection fluid just entering the contraction section 2211, the flow velocity of the mixed gas is reduced, and the gas and the air are uniformly mixed at the moment. After the mixed gas enters the secondary diffusion section 2214, the static pressure is further increased, the flow speed of the mixed gas is further reduced, and at the moment, the mixed gas is mixed more uniformly. The design of the primary diffusion section 2213 and the secondary diffusion section 2214 ensures that the fuel gas and the air are mixed more uniformly, and the flow speed of the mixed gas is also greatly reduced. It will be appreciated that the pressure of the fluid acting perpendicularly on the wall is referred to as static pressure and that the pressure resulting from the velocity as the mixture flows within the second eductor part 22 of the conduit structure is referred to as dynamic pressure.

Preferably, the second injection portion 22 and the second gas mixing portion 21 are integrally formed into one piece by some process, such as die casting or integral casting of a metal material. As shown in fig. 7 to 9, a plurality of second fixing legs 23 are provided at intervals between the bottom of the second air mixing portion 21 and the bottom of the second injection portion 22. For example, the second injection portion 22 is provided with a second fixing leg 23 corresponding to the throat section 2212, and cooperates with two second fixing legs 23 spaced apart from the bottom of the second section 213 to form a tripod shape for supporting and fixing the second burner 2.

In the above embodiment, the second burner 2 may further include a second fire cover 24 having a second fire hole 241 at the top and a second ignition needle 25 connected to the outside (the side where the circular arc is located) of the second gas mixing portion 21, the shape of the second fire cover 24 corresponding to the shape of the second gas mixing portion 21 and covering the second opening 211. The side wall of the second fire cover 24 is provided with a second fire transfer hole 242, and the needle head portion of the second ignition needle 25 corresponds to the second fire transfer hole 242.

In the above embodiment, the hob may further comprise a panel assembly 7 as shown in fig. 11 to 14, said panel assembly 7 being provided with a first combustion hole 71 and a second combustion hole 72. After the second burner 2 is fixed to the stove housing 6, the second air mixing portion 21 of the second burner 2 can pass through the second combustion hole 72 to dispose the second opening 211 of the second air mixing portion 21 in the plane in which the first air mixing portion 12 is located. It is to be understood that the second air-mixing portion 21 may be provided inside the first combustion hole 71 not entirely through the second combustion hole 72 but through a partial depth of the first combustion hole 71. After the first burner 1 is fixed to the hob housing 6, the first air mixing section 12 of the first burner 1 can pass through the first combustion hole 71 or the second combustion hole 72 or be provided inside the first combustion hole 71 or the second combustion hole 72. When the first air-mixing portion 12 is disposed in the first combustion hole 71, it is in the first position, in which the first burner 1 can be used alone, and a small heat load is obtained. When the first air-mixing portion 12 is disposed in the second combustion hole 72, it can constitute a combined burner with a large heat load with the second burner 2. Compared with the prior art, the power control device can realize optimal power configuration, is suitable for various different use occasions, and meets the requirements of western-style food uniform firepower cooking and high-power strong-fire quick-frying of Chinese food. Further, the panel assembly 7 may be further provided with a third combustion hole 73, at which a conventional burner can be provided.

According to an exemplary embodiment of the panel assembly 7, as shown in fig. 12, the panel assembly 7 may include a panel body 74, a panel reinforcement plate 75, a pot holder plate 76, at least two pot holders 77, which are disposed in order from bottom to top. The first combustion hole 71 includes a first hole 711, the second combustion hole 72 includes a second hole 721, a third hole 722, and a fourth hole 723, the third combustion hole 73 includes a fifth hole 731, a sixth hole 732, and a seventh hole 733, and the panel main body 74 has a substantially rectangular shape disposed in a horizontal plane direction, and is provided with the second hole 721, the seventh hole 733, and a circular hole 741 through which the first base 13 of the first burner 1 passes. The panel reinforcing plate 75 has a substantially rectangular shape disposed in the horizontal plane direction, and a plurality of mounting features are provided at intervals along the periphery thereof, and is provided with a third hole 722, a sixth hole 732, and a relief portion 751 provided correspondingly to the circular hole 741. The relief 751 is arcuate and concave in shape. The pan frame plate 76 is substantially rectangular and disposed in a horizontal plane, and the pan frame plate 76 is provided with a first hole 711, a fourth hole 723, and a fifth hole 731. The pan frame plate 76 is spaced from the panel reinforcement plate 75 by a distance that allows the first ejector portion 11 and the first air mixing portion 12 to move between the panel reinforcement plate 75 and the pan frame plate 76 and switch between the first position and the second position. Due to the space, the pan carrier plate 76 is further provided with a flange extending toward the side of the panel body 74 (the lower side of the pan carrier plate 76 shown in fig. 14), by which the lower side of the pan carrier plate 76 can be shielded.

With continued reference to fig. 12 for one exemplary embodiment of at least three pan brackets 77, at least two pan brackets 77 include a first pan bracket 771, a second pan bracket 772, and a third pan bracket 773. The pan frame plate 76 is provided with a first hole group 761 corresponding to the periphery of the first hole 711, and when the first pan frame 771 is provided corresponding to the first hole 711, the first pan frame 771 passes through the first hole group 761 and is connected with the pan frame plate 76 at a position approximately in the middle thereof, the bottom of the part passing through the first hole group 761 is connected with the panel reinforcing plate 75, so that one part of the first pan frame 771 extends out of the pan frame plate 76 to support the pan placed thereon, and the other part is provided between the pan frame plate 76 and the panel reinforcing plate 75, so that the pan frame plate 76 and the panel reinforcing plate 75 have a certain distance. Likewise, the pot support plate 76 is provided with a second hole group 762 corresponding to the periphery of the fourth hole 723, and the second pot support 772 is disposed corresponding to the fourth hole 723, when the first pot support 771 passes through the second hole group 762, and the connection manner of the first pot support 771 and the panel reinforcement plate 75 respectively may refer to the connection manner of the first pot support 771 and the pot support plate 76 and the panel reinforcement plate 75 respectively, which will not be described herein. In addition, a third hole group 763 is provided at a peripheral position of the pan carrier plate 76 corresponding to the seventh hole 733, and the third pan carrier 773 passes through the third hole group 763 when the third pan carrier 773 is provided corresponding to the seventh hole 733.

Specifically, as shown in fig. 13 and 14, the first and second pan holders 771 and 772 respectively include four pan holder bodies 774 looped at equal intervals, correspondingly, the first hole group 761 includes four first mounting holes 7611 for one-to-one mounting of the four pan holder bodies 774 of the first pan holder 771, and the second hole group 762 includes four second mounting holes 7621 for one-to-one mounting of the four pan holder bodies 774 of the second pan holder 772. For the first pan support 771 mounted at the first hole 711, four pan support bodies 774 are disposed at intervals of every 90 °, with two opposite pan support bodies 774 disposed in a first direction (the length direction of the pan support plate 76) and the other pair of two opposite pan support bodies 774 disposed in a second direction (the width direction of the pan support plate 76). The first direction is perpendicular to the second direction. The same is true for the four pan support bodies 774 corresponding to the second pan support 772 mounted at the fourth holes 723. So that two pan support bodies 774 provided at intervals on the first hole 711 and two pan support bodies 774 provided at intervals on the fourth hole 723 extend along the same straight line (i.e., a straight line along the length direction of the pan support plate 76). Further, the two pan support bodies 774 located between the first hole 711 and the fourth hole 723 can be easily integrally formed into one body, so that the strength of the two pan support bodies 774 can be increased, and the number of manufacturing steps can be reduced. Similarly, of the two opposing pan support main bodies 774 that correspond to the seventh hole 733 and are provided in the longitudinal direction of the pan support plate 76, the pan support main body 774 that is located on the side close to the fourth hole 723 is integrally formed with the pan support main body 774 that corresponds to the fourth hole 723 and is located on the side close to the seventh hole 733. The part of the pan support body 774 is integrally formed and is only connected to the pan support plate 76, and the rest of the pan support body 774 may extend to the panel reinforcement plate 75 after passing through the first hole group 761 (first mounting hole 7611), the second hole group 762 (second mounting hole 7621), and the third hole group 763 (third mounting hole 7631). It will be appreciated that the pan support body 774 may be snap fit, plug fit, or some other removable connection to the pan support plate 76 within the first 7611, second 7621, and third 7631 mounting holes, respectively.

In order to facilitate the disassembly of the panel assembly 7, as shown in fig. 12 to 14, the first, second and third pan brackets 771, 772 and 773 further comprise pan bracket fixtures 775 corresponding to each of the pan bracket bodies 774 one by one, respectively, and the pan bracket fixtures 775 are fixedly connected to the panel reinforcement plate 75 as a whole by welding or some other fixing means. And the pan support mounts 775 and the pan support body 774 have corresponding mounting features, such as snap structures, hooks, etc., when the pan support body 774 and the pan support mounts 775 are connected by the mounting features, the pan support body 774 can be connected to the panel reinforcement plate 75 by the pan support mounts 775, thereby facilitating the removal of the panel assembly 7.

In addition, the first base 13 of the first burner 1 is mounted on the kitchen range bottom shell, in order to facilitate the arrangement of the first injection portion 11 and the first air mixing portion 12 between the panel reinforcement plate 75 and the pan frame plate 76, the panel main body 74 is further provided with a circular hole 741 through which the first base 13 of the first burner 1 passes, and the panel reinforcement plate 75 is provided with a relief portion 751 corresponding to the circular hole 741. The upper part of the first base 13 can pass through the circular hole 741 and then the first injection part 11 and the first air mixing part 12 are arranged between the panel reinforcing plate 75 and the pot frame plate 76. It is to be understood that the relief portion 751 may be a circular arc groove recessed along the center line of the horizontal surface panel reinforcement plate 75 in the longitudinal direction as shown in fig. 12. Further, the panel body 74 is provided with a first seal ring 742 corresponding to the periphery of the circular hole 741. The panel body 74 is provided at its periphery with a second seal 743.

The panel reinforcement plate 75 and the panel body 74 may be fixed to the panel body 74 or the panel reinforcement plate 75 in addition to the second burner 2 being fixed to the stove housing 6. When the second burner 2 is fixed to the panel body 74, mounting holes for mounting the third fixing legs 26 of the second burner 2 may be provided on the panel body 74. When the second burner 2 is fixed to the panel reinforcement plate 75, the diameter of the second hole 721 of the panel body 74 is larger than the diameter of the third hole 722 of the panel reinforcement plate 75, so that the third fixing leg 26 can be abutted against the periphery of the panel reinforcement plate 75 corresponding to the third hole 722 after passing through the second hole 721, and the fourth mounting holes 752 corresponding to the third fixing legs 26 one by one are provided at intervals on the panel reinforcement plate 75 corresponding to the periphery of the third hole 722.

In embodiments of the present invention, the term "plurality" refers to two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally attached. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the embodiments of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and to simplify the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the embodiments of the present invention.

In the description of the present specification, the terms "one embodiment," "a preferred embodiment," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention and is not intended to limit the embodiment of the present invention, and various modifications and variations can be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A hob, characterized in that it comprises a first burner (1) and a second burner (2), said first burner (1) comprising:

The device comprises a first base (13), wherein two first channels (131) are formed on the first base (13), and a first nozzle (14) is arranged on an air outlet of each first channel (131);

A first injection part (11), wherein the first injection part (11) is connected with the first base (13) through a first rotating mechanism (3), and

A first air mixing part (12), wherein the first air mixing part (12) is arranged at the other end of the first injection part (11) and the top of the first air mixing part is provided with a first opening (121);

Wherein when one end of the first injection part (11) faces one of the first nozzles (14), the first gas mixing part (12) is arranged at a first position, and when one end of the first injection part (11) faces the other first nozzle (14), the first gas mixing part (12) is arranged at a second position;

The first rotating mechanism (3) comprises a driving part (31), a gear and a first shell (32), wherein the driving part (31) is connected to the first base (13), the gear is coaxially arranged with an output shaft of the driving part (31), at least one part of the inner side wall of the first shell (32) is provided with a rack (321) meshed with the gear, and the first injection part (11) is connected to the first shell (32);

The first shell (32) axially extends between the air inlet of the first injection part (11) and the first nozzle (14), an air inlet through hole (322) is formed at the air inlet corresponding to the first injection part (11), and the area of the air inlet through hole (322) is larger than that of the air inlet of the first injection part (11);

The second burner (2) comprises a second gas mixing part (21) with a second opening (211) at the top, the first gas mixing part (12) is matched with the second gas mixing part (21), the first opening (121) and the second opening (211) are comma-shaped, and the first opening (121) and the second opening (211) are connected end to form a circle in a surrounding mode;

The second gas mixing part (21) comprises a first section (212) and a second section (213) which are arranged from top to bottom along the axial direction of the second gas mixing part, the cross section of the first section (212) perpendicular to the axial direction of the second gas mixing part (21) is comma-shaped, the top surface of the second section (213) is circular, the whole bottom surface of the first section (212) is communicated with the partial top surface of the second section (213), and then a void area (2132) of the first gas mixing part (12) is formed at the part of the second section (213) which is not communicated with the first section (212), so that the first gas mixing part (12) can be arranged in the void area (2132) when the first gas mixing part (12) is matched with the second gas mixing part (21), and the first gas mixing part (12) can be supported by the second gas mixing part (21);

The second section (213) is internally provided with a second channel (2131) extending around a part of the second channel in the axial direction, the bottom of the second channel (2131) rises in a spiral shape, and the top of the second channel (2131) is communicated with the first section (212), so that the gas mixture can stably rise in the second section (213), and the gas mixture is prevented from striking the inner side wall of the second section (213) to generate turbulent airflow.

2. The hob according to claim 1, characterized in, that a first nozzle (14) protrudes out of the outer periphery of the first base (13), that a gap (4) is present between the inner side wall of the first housing (32) and the first base (13), the gap (4) being configured to avoid the first nozzle (14) when the first housing (32) rotates.

3. The cooking appliance according to claim 1, wherein the first housing (32) is provided with a first connection lug (323) extending outwards, the first connection lug (323) is provided with a first pin hole (3231) extending along a tangential direction of the first base (13), the first injection part (11) is provided with a connecting piece (111), the connecting piece (111) is provided with a second pin hole (1111), and a first pin shaft penetrates through the first pin hole (3231) and the second pin hole (1111) so as to rotationally connect the first injection part (11) to the first housing (32).

4. A stove according to claim 3, characterized in that the connecting piece (111) comprises a first connecting plate (1112) in a shape of a "U" and a second connecting plate (1113) connected to the first injection part (11), two end parts of the first connecting plate (1112) are respectively arranged at two sides of the first connecting lug (323) and respectively provided with the second pin hole (1111), and a middle part of the first connecting plate (1112) is connected to the second connecting plate (1113).

5. The hob according to any one of the claims 1 to 4, characterized in, that the first burner (1) further comprises a first fire cover (15) with a first fire hole (151) at the top and a first ignition needle (16) connected to the outside of the first gas mixing section (12), the shape of the first fire cover (15) corresponds to the shape of the first gas mixing section (12) and covers the first opening (121), the side wall of the first fire cover (15) is provided with a first fire transfer hole (152), the needle part of the first ignition needle (16) corresponds to the first fire transfer hole (152).

6. The hob according to any one of the claims 1 to 4, characterized in, that each first channel (131) comprises at least a first segment (1311), a second segment (1312) and a third segment (1313) communicating in sequence, the first segment (1311) extending inwardly from the periphery of the first base (13) to near the centre of the first base (13), the second segment (1312) extending in the axial direction of the first base (13), the third segment (1313) extending outwardly from near the centre of the first base (13) to the periphery of the first base (13), the first nozzle (14) being arranged at the air outlet of the third segment (1313).