CN111750352A - Burner for gas stove - Google Patents

Abstract

The invention relates to a burner for a gas stove, which comprises a base, a central gas channel arranged at the central part of the base, and an inner ring fire cover, wherein the central gas channel is of a cylindrical structure with an upward opening, the inner ring fire cover comprises an annular wall surface connected with the top of the central gas channel, a fire outlet part arranged on the annular wall surface, and a top cover covered on the annular wall surface, and the burner is characterized in that: the inner wall of the central gas channel is provided with an annular liquid collecting groove, and the bottom of the annular liquid collecting groove is connected with a third elastic part.

Description

Burner for gas stove

Technical Field

The invention relates to the field of gas cookers, in particular to a burner for a gas cooker, which is used for lifting a pot and shutting off fire.

Background

Present big desk-top stir-fry kitchen, middling pressure fry kitchen, often need open earlier gas, reuse ignition rod or burning torch ignite, open air supply system at last, just can normally burn, work such as fry, the operation is very inconvenient to during the interval of adding condiments, sabot and repeated operation, the stove fire is still burning constantly, and oil gas fuel's waste is very big, and air supply system also does not stop work, causes the waste of electricity. Therefore, a Chinese utility model patent with the patent number ZL200420034149.3 (with the publication number CN2731307Y) 'full-automatic energy-saving stove' discloses a full-automatic energy-saving stove which comprises a stove body, and is characterized by also comprising a control rod and a follow-up skewer, wherein the follow-up skewer is arranged in the stove body and can move up and down along with the placement and lifting of the stove body on a pot; the lower end of the follow-up skewer is movably connected with the control rod in a mode that the lower end of the follow-up skewer is connected with one end of the control rod, the other end of the follow-up skewer is fixed on the stove body in a rotatable mode, when the pot is placed on the stove, the follow-up skewer is pressed to move downwards, so that the moving end of the control rod moves downwards, the fuel control switch, the ignition control switch and the air blower control switch are switched on, the supply of oil gas fuel is switched on, the air blower is ignited, and the full-automatic energy-saving stove starts to work. When the pan is lifted, the follow-up skewer moves upwards, the moving end of the control rod moves upwards, and the fuel control switch, the ignition control switch and the blower control switch are switched off, so that the full-automatic energy-saving stove stops working, and the pan is placed, ignited and lifted to be closed. The switch and the ignition control switch are controlled by the up-and-down movement of the follower skewer, but the requirement for the circuit part is high by the control in this way.

At present, due to the injection effect of combustion hot air flow during combustion of a combustor, primary air and secondary air are sucked by the inner fire cover and the outer fire cover through the air mixing chamber, and further improvement is needed in order to prevent the inner ring and the outer ring from influencing each other when secondary air is sucked by the inner ring and the outer ring and to achieve sufficient combustion of the inner ring and the outer ring.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a burner for a gas stove, which has a good anti-overflow effect while changing the size of the inner ring fire, in view of the above-mentioned current state of the art.

The second technical problem to be solved by the present invention is to provide a burner for a gas stove, which can effectively avoid the mutual influence of the inner ring and the outer ring when the secondary air is sucked.

The third technical problem to be solved by the present invention is to provide a burner for a gas stove, which can easily open the outer ring fire by sitting on the pot and can effectively supplement secondary air during cooking, in view of the above-mentioned current state of the art.

A fourth technical problem to be solved by the present invention is to provide a burner for a gas stove, which can effectively improve the combustion efficiency, in view of the above-mentioned prior art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: this a combustor for gas-cooker, the combustor includes:

a base;

the central gas channel is of a cylindrical structure with an upward opening and is arranged at the central part of the base;

inner ring fire lid, inner ring fire lid including connect the annular wall at central authorities 'gas channel's top, set up the portion of putting out a fire on this annular wall and cover the top cap on the annular wall, its characterized in that: the annular wall surface of the inner ring fire cover is provided with an annular liquid collecting groove which extends inwards along the radial direction and is used for containing overflowing liquid, the bottom of the annular liquid collecting groove is connected with a third elastic piece, the upper end of the third elastic piece is connected with the top cover, and the third elastic piece enables the top cover to always have the tendency of being capable of being restored to be flush with the top opening of the central gas channel.

Further, the annular liquid collecting tank comprises a vertical convex edge extending towards the center, and a first outflow port for allowing gas to flow to the fire outlet part is formed between the top of the vertical convex edge and the top cover of the inner ring fire cover.

In order to adapt to the situation that the pan is a sharp pan, the pan bottom of the sharp pan presses the inner ring fire cover, preferably, a moving part is arranged in the central gas channel, a gap between the outer wall of the moving part and the central gas channel forms a channel for supplying gas to the fire outlet part, the channel is provided with a second flow outlet which is in fluid communication with the first flow outlet, the moving part further comprises a driving rod which can be elastically arranged in a cavity of the moving part, a lower shielding part which is arranged at an interval with the top cover is arranged on the periphery of the driving rod, the lower shielding part is arranged above the second flow outlet, a gas flow outlet for allowing gas to flow into the first flow outlet is formed between the lower shielding part and the second flow outlet, the head of the driving rod can be forced to move downwards relative to the central gas channel under the action of placing the pan on the driving rod, and the top cover can at least partially shield the fire outlet, thereby changing the air outlet area of the fire outlet part, and the lower shielding part can reduce the size of the fuel gas outlet so as to change the fuel gas amount flowing into the fire outlet part. When the pot with the sharp bottom is placed at the head of the driving rod, the head of the driving rod can retract into the outer sleeve (the first elastic piece is compressed at the moment), the outer sleeve, the top cover of the inner ring fire cover and the contraction part can move downwards relative to the fixing seat (the second elastic piece and the third elastic piece are compressed at the moment), so that the peripheral shielding piece is driven to move downwards, the main fire part can be exposed, meanwhile, in order to prevent the pot with the sharp bottom from pressing the inner ring fire, the top cover and the shielding part can move downwards along with the outer sleeve, so that the top cover can at least partially shield the fire outlet part, the air outlet area of the fire outlet part is changed, the size of a gas outlet opening can be reduced by the lower shielding part, the gas quantity flowing into the fire outlet part is changed, and the adaptive adjustment of the inner ring fire is realized.

Further, the moving part is divided into two parts from bottom to top according to the change of the cross section: with straight portion and the bellmouth constriction portion up of the internal diameter looks adaptation of central authorities gas passageway, the afterbody elasticity of actuating lever is located the constriction portion, and central authorities gas passageway is provided with and supplies the fixing base of the relative its removal of constriction portion, second outfall sets up at the interval on straight portion.

Further, the periphery of actuating lever is provided with the outer tube, the central authorities of shrink portion have the confession the spacing groove of outer tube relative movement, the outer tube with interior ring fire lid an organic whole sets up, the bottom of spacing groove is provided with first supporting rod, the upper end of first supporting rod with be connected with first elastic component between the lower extreme of actuating lever, the outer tube cover is established the periphery of first supporting rod, and in the interval has between the bottom of spacing groove, the setting up of first elastic component can make the head of actuating lever have all the time expose in the trend at the top of outer tube, the top cap all sets up with lower occlusion part on the outer tube. The outer sleeve can support the bottom of the sharp cooker to prevent the bottom of the sharp cooker from being too close to the inner ring fire cover, when the cooker is placed at the head of the driving rod, the head of the driving rod can retract into the outer sleeve and can drive the contraction part to move downwards relative to the fixing seat so as to drive the peripheral shielding part to move downwards and expose the main fire part, but the bottom of the sharp cooker always keeps the distance of the outer sleeve from the inner ring fire cover, the bottom of the sharp cooker presses the inner ring fire cover, and when a user lifts the cooker, the driving rod and the contraction part can both return to the initial state and the peripheral shielding part moves upwards so as to shield the main fire part; in addition, the head of the driving rod can retract into the outer sleeve, and meanwhile, the head of the driving rod can drive the contraction part to move downwards relative to the fixing seat, so that in the process of driving the peripheral shielding part to move downwards, the top cover and the lower shielding part can move downwards along with the outer sleeve, the top cover can at least partially shield the fire outlet part, the air outlet area of the fire outlet part is changed, the size of the outflow port can be reduced by the lower shielding part, and the amount of fuel gas entering the cavity is changed.

Furthermore, the bottom of the contraction part is provided with a contraction foot which contracts inwards along the radial direction, a second elastic piece is sleeved on the contraction foot, the tail end of the second elastic piece is connected into the central pipeline of the fixed seat, and the arrangement of the second elastic piece enables the contraction part to always have the tendency of returning to the original position.

To solve the second technical problem, it is preferable that the method further includes:

the outer ring gas channel is arranged at the peripheral part of the central channel of the base;

the outer ring fire cover is arranged on the outer ring gas channel, is provided with an outer ring gas mixing chamber and an inner ring gas mixing chamber, and is provided with a main fire part communicated with the outer ring gas mixing chamber;

the air supplementing cavity is formed between the inner ring air mixing chamber and the outer ring air mixing chamber;

the base is also provided with a plurality of radial secondary air supplementing channels at intervals along the circumferential direction, and the secondary air supplementing channels are used for communicating the air supplementing cavity with the outside;

the moving part is still including the peripheral shielding piece that is used for sheltering from main fire portion, the actuating lever of moving part can directly be triggered under the action that the pan was shelved above that to realize exposing of main fire portion, and the moving part is still including setting up the partition portion in secondary tonifying qi passageway, the partition portion can with secondary tonifying qi passageway is separated into two relatively independent spaces, communicates respectively the main fire portion region of outer loop gas mixing chamber with the play fire portion region of central authorities gas mixing chamber. The movable piece moves downwards under the action of placing the pot on the pot so as to expose the main fire part, the outer ring fire is formed, meanwhile, the separating part can be driven to move downwards so as to enable the secondary air supplementing channel to be separated into a main fire part area communicated with the outer ring air mixing chamber and an outer wall area of the central air mixing chamber respectively, hot air flow after combustion and the high temperature of the burner are effectively avoided, the fire part area of the fire part and the main fire part are supplemented, the mutual entrainment of secondary air between the fire part and the main fire part is avoided, the air supply effect is effectively improved, and therefore the defects of yellow flame, tempering and the like of the burner are avoided.

Further, the partition portion is for being annular partition wall, the partition wall with straight portion is connected through first horizontal connecting rod, the top of partition wall extends to first horizontal connecting rod on has an inversion L type baffle, peripheral shielding piece is vertical shielding plate, vertical shielding plate with connect through second horizontal connecting rod between the lateral wall of partition wall, the bottom of partition wall extends to second connecting rod downwardly, and towards the secondary tonifying qi passageway extends there is horizontal partition portion. The driving rod drives the contraction part to move downwards relative to the fixing seat, so that the peripheral shielding part is driven to move downwards, the top cover and the lower shielding part move downwards along with the outer sleeve, the top cover can at least partially shield the fire outlet part, the air outlet area of the fire outlet part is changed, meanwhile, the lower shielding part can be driven to move downwards, the horizontal partition part of the partition part can divide the secondary air supply channel into two parts, hot air flow after combustion and high temperature of a combustor are effectively prevented from supplying the fire outlet area of the fire outlet part and the main fire part, and the mutual entrainment of secondary air between the fire outlet part and the main fire part is avoided.

In order to better realize the fire shutting of the lifting pot of the outer ring fire, preferably, the outer ring fire cover comprises a ring-shaped part and an annular body arranged in the ring-shaped part, and the annular body is provided with a main fire part which is communicated with the outer ring gas mixing chamber and can spray mixed gas towards the inner ring fire cover. This ring body can constitute by at least two-layer thin sheet metal piece and the corrugate fire lid piece of setting between this thin sheet metal piece, for this reason because the special design of outer loop fire lid to make peripheral shielding member can set up to vertical shielding plate simply.

The transmission piece is also specially designed, preferably, a transmission piece for transmitting the fuel gas in the outer ring fuel gas channel to the annular part is arranged between the annular part and the outer ring fuel gas channel, the transmission piece comprises an inner ring wall, an outer ring wall and a connecting wall, wherein the inner ring wall and the outer ring wall are concentrically arranged at intervals, the connecting wall is provided with at least two vertical outer ring gas supplementing channels which are independent from the secondary gas supplementing channels and used for supplementing secondary air to the main fire part along the circumferential direction, the inner side of each vertical outer ring gas supplementing channel corresponding to the connecting wall is provided with a vertical connecting part communicated with the outer ring fuel gas channel and a horizontal connecting part which is positioned between two adjacent vertical connecting parts and extends outwards along the radial direction, and the secondary gas supplementing channel radially penetrates through the bottom of the connecting wall. The main fire part of the outer ring fire cover has two ways for supplementing secondary air, one way is a vertical outer ring air supplementing channel, and the other way is that the secondary air supplementing channel is divided into a space which can be communicated with the main fire part area of the outer ring air mixing chamber through the dividing part, so that the full combustion of the outer ring main fire part can be ensured.

Further, the transmission piece coats and is stamped cyclic annular apron, cyclic annular apron is including the first apron portion that corresponds outer loop gas fired passageway and the second apron portion that corresponds horizontal connection portion, forms the confession between the adjacent second apron portion the breach that vertical outer loop tonifying qi passageway exposed, each the peripheral portion of breach articulates there is the third apron portion that is used for covering vertical outer loop tonifying qi passageway. When shelving on the moving part in order to realize the pan to drive moving down of peripheral shielding piece, thereby can expose main fire portion, can also push down the third apron portion this moment for outer loop tonifying qi passageway exposes, and then supplyes secondary air to main fire portion, promotes the abundant burning of main fire portion.

In order to solve the third technical problem, preferably, an actuating member capable of actuating the third cover plate to open or close relative to the vertical outer ring air replenishing channel is arranged on the third cover plate, and the actuating member can actuate the third cover plate to rotate under the triggering of the action of downward movement of the peripheral shielding member. In order to better actuate the third cover plate part, the actuating part can better drive the third cover plate part to rotate when the peripheral shielding part moves downwards, so that the outer ring air supplementing channel is exposed, secondary air is supplemented to the main fire part, and the full combustion of the main fire part is promoted.

Furthermore, the pipe wall of the central gas channel is provided with a through hole for the horizontal connecting rod to penetrate through, the head of the driving rod can directly move downwards relative to the contraction part under the action of placing the pot thereon, so that the contraction part is driven to move downwards relative to the fixing seat, and finally the peripheral shielding piece is driven to move downwards relative to the main fire part.

In order to realize the anti-dry function of the burner, the driving rod is preferably a temperature sensor.

To solve the fourth technical problem, preferably, the ring-shaped part of the outer ring fire cover is provided with a power collecting cover. The energy-gathering cover can enable combustion heat generated by the outer ring fire cover in the combustion process to be gathered better so as to heat the pot bottom better.

Compared with the prior art, the cooker has the advantages that when the cooker is placed on the inner ring, the top cover of the inner ring fire cover can be pressed at least partially, so that the distance between the inner ring fire cover and the bottom of the cooker is increased, the inner ring fire cover is prevented from being pressed, meanwhile, overflowing liquid in the annular liquid collecting tank can be assisted to flow out from the fire outlet part, and once overflowing liquid enters the annular liquid collecting tank from the inner ring fire cover, the overflowing liquid can be discharged quickly to avoid influencing a nozzle of a central gas channel.

Drawings

FIG. 1 is a schematic view of a burner according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of an angle of the transmission member according to an embodiment of the present invention;

FIG. 4 is a schematic view of another angle of the transfer member in the embodiment of the present invention;

FIG. 5 is a cross-sectional view of an angle of the transfer member in an embodiment of the present invention;

FIG. 6 is a cross-sectional view of another angle of the transfer member in an embodiment of the present invention;

FIG. 7 is a cross-sectional view of the burner of an embodiment of the present invention shown with the outer ring fire closed;

FIG. 8 is a cross-sectional view of the burner in a cooking position (with the outer ring fire open with the pot in place) in accordance with an embodiment of the present invention;

FIG. 9 is a cross-sectional view of the slight movable element of FIG. 8;

FIG. 10 is a schematic view of an angle of the moveable member of the present invention;

FIG. 11 is a schematic view of another angle of the moveable member of the present invention;

FIG. 12 is a schematic view of an embodiment of an annular cover plate;

FIG. 13 is a cross-sectional view at yet another angle of FIG. 1;

FIG. 14 is a cross-sectional view of a pot with a pointed bottom in a seated position in accordance with an embodiment of the present invention;

FIG. 15 is a cross-sectional view of a pot with a tipped end in a seated position in accordance with an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 15, which are the best embodiments of the present invention, the burner for a gas stove in the present embodiment includes a base 1; the gas burner comprises a central gas channel 11 arranged at the central part of a base 1, wherein the central gas channel 11 is of a cylindrical structure with an upward opening, and further comprises an inner ring fire cover 4, the inner ring fire cover 4 comprises an annular wall surface 400 connected to the top of the central gas channel 11, a fire outlet part 42 arranged on the annular wall surface 400 and a top cover 401 covering the annular wall surface 400, the inner wall of the central gas channel 11 is provided with an annular liquid collecting groove 110 which extends inwards along the radial direction and is used for containing overflowing liquid, the bottom of the annular liquid collecting groove 110 is connected with a third elastic element 9, the upper end of the third elastic element 9 is connected to the top cover 401, and the third elastic element 9 enables the top cover 401 to always have the tendency of being capable of being restored to be flush with the opening at the top of the central gas channel 11. When the pan was placed on the inner ring, top cap 401 of inner ring fire lid 4 can be pushed down by at least part to increase the distance at the bottom of inner ring fire lid 4 and the pan, can also assist the discharge of the overflow in cyclic annular collecting tank 110 from fire portion 42 outflow when avoiding inner ring fire lid 4 to be pressed fire, in case like this overflow gets into cyclic annular collecting tank 110 from inner ring fire lid 4, can discharge the overflow rapidly in order to avoid producing the influence to the nozzle of central gas passageway 11.

Specifically, the annular liquid collecting groove 110 comprises a vertical flange 1101 extending towards the center, and a first outflow port 112 for the gas to flow to the fire outlet portion 42 is formed between the top of the vertical flange 1101 and the top cover 401 of the inner ring fire cover 4. A movable piece 3 is arranged in the central gas channel 11, a gap between the outer wall of the movable piece 3 and the central gas channel 11 forms a channel 1100 for supplying gas to the fire outlet portion 42, the channel 1100 has a second outflow hole 1121 in fluid communication with the first outflow hole 112, wherein the movable piece 3 further comprises a driving rod 34 elastically arranged in the cavity 321 of the movable piece 3, a lower shielding portion 341 arranged at an interval with the top cover 401 is arranged at the periphery of the driving rod 34, the lower shielding portion 341 is arranged above the second outflow hole 1121, a gas outflow hole 1123 for gas to flow into the first outflow hole 112 is formed between the lower shielding portion 341 and the second outflow hole 1121, the movable piece 3 can be forced to move downwards relative to the central gas channel 11 under the action that the head of the driving rod 34 is placed on the cooker, the top cover 401 can at least partially shield the fire outlet portion 42, so as to change the area of the gas fire outlet portion 42, and the lower shielding portion 341 can reduce the size of the gas outflow hole 1123, thereby changing the amount of gas flowing into the fire outlet portion 42. When the pot with the sharp-pointed bottom is placed at the head of the driving rod 34, the head of the driving rod 34 can retract into the outer sleeve 15 (which satisfies the compression of the first elastic element 7), and the outer sleeve 15, the top cover 401 of the inner fire-surrounding cover 4, and the contraction part 32 are driven to move downward relative to the fixing seat 111 (which satisfies the compression of the second elastic element 8 and the third elastic element 9), so as to drive the peripheral shielding element 3a to move downward, so as to expose the main fire part 22, meanwhile, in order to prevent the pot with the sharp-pointed bottom from pressing the inner fire, the top cover 401 and the lower shielding part 341 can move downward along with the outer sleeve 5, so that the top cover 401 can at least partially shield the fire-surrounding part 42, so as to change the air outlet area of the fire-surrounding part 42, and the size of the gas outlet 1123 can be reduced by the lower shielding part 341, so as to change the amount of gas flowing into the fire-surrounding part 42. Wherein the moving part 3 is divided into two parts from bottom to top according to the change of the cross section: straight portion 31 and the ascending constriction 32 of horn mouth with the internal diameter looks adaptation of central gas passageway 11, the afterbody elasticity of actuating lever 34 is located constriction 32 to central gas passageway 11 is provided with the fixing base 111 that can supply constriction 32 to move relative to it. The periphery of actuating lever 34 is provided with outer tube 5, the central authorities of constriction portion 32 have the confession outer tube 5 relative movement's spacing groove 331, outer tube 5 sets up with inner ring fire lid 4 is integrative, the bottom of spacing groove 331 is provided with first supporting rod 6, be connected with first elastic component 7 between the upper end of first supporting rod 6 and the lower extreme of actuating lever 34, outer tube 5 cover is established in the periphery of first supporting rod 6, and have the interval between the bottom of spacing groove 331, the setting of first elastic component 7 can make the head of actuating lever 34 have the trend of exposing in the top of outer tube 5 all the time, top cap 401 and lower shielding portion 341 all set up on outer tube 5. The outer sleeve 5 can support the bottom of the sharp cooker to prevent the bottom of the sharp cooker from being too close to the inner ring fire cover 4, when the cooker is placed at the head of the driving rod 34, the head of the driving rod 34 can retract into the outer sleeve 5 and can drive the contraction part 32 to move downwards relative to the fixed seat 111, so that the peripheral shielding part 3a is driven to move downwards, the main fire part 22 can be exposed, the bottom of the sharp cooker always keeps the distance of the outer sleeve 5 from the inner ring fire cover 4, the bottom of the sharp cooker presses the inner ring fire cover 4, and when a user lifts the cooker, the driving rod 34 and the contraction part 32 can return to the initial state, and the peripheral shielding part 3a moves upwards, so that the main fire part 22 is shielded; in addition, the head of the driving rod 34 can retract into the outer sleeve 5 and simultaneously drive the contraction portion 32 to move downwards relative to the fixing base 111, so that in the process of driving the peripheral shielding piece 3a to move downwards, the top cover 401 and the lower shielding portion 341 both move downwards along with the outer sleeve 5, wherein the top cover 401 can at least partially shield the fire outlet portion 42, so as to change the air outlet area of the fire outlet portion 42, and the lower shielding portion 341 can reduce the size of the outlet port 112, so as to change the amount of gas entering the cavity 321. The bottom of the contraction part 32 is provided with a contraction foot 332 which contracts inwards along the radial direction, the contraction foot 332 is sleeved with a second elastic element 8, the tail end of the second elastic element 8 is connected in the central pipeline of the fixed seat 111, and the arrangement of the second elastic element 8 enables the contraction part 32 to always have the tendency of returning to the original position.

In order to realize that the burner has an inner ring fire and an outer ring fire, the outer ring gas channel 12 and an outer ring fire cover 2 arranged on the outer ring gas channel 12 are also arranged at the peripheral part of the central gas channel 11 of the base 1, the outer ring fire cover 2 and the outer ring gas channel 12 form an outer ring gas mixing chamber 21 and are provided with a main fire part 22 communicated with the outer ring gas mixing chamber 21; wherein, an air supplement cavity 500 is formed between the inner ring air mixing chamber 41 and the outer ring air mixing chamber 21, and a plurality of radial secondary air supplement channels 400 for communicating the air supplement cavity 500 with the outside are arranged on the base 1 at intervals along the circumferential direction; the movable element 3 further comprises a peripheral shielding piece 3a for shielding the main fire part 22, the driving rod 34 of the movable element 3 can be directly triggered under the action of placing the cookware on the driving rod, so that the main fire part 22 is exposed, the movable element 3 further comprises a partition part 30 arranged in the secondary air supplementing channel 400, and the partition part 30 can divide the secondary air supplementing channel 400 into two relatively independent spaces which are respectively communicated with the main fire part 22 area of the outer ring air mixing chamber 21 and the fire outlet part 42 area of the central air mixing chamber. The movable piece 3 moves downwards under the action of placing the pot on the pot, so that the main fire part 22 can be exposed, the partition part 30 can be driven to move downwards while the outer ring fire is formed, so that the secondary air supply channel 400 is partitioned into a main fire part 22 area communicated with the outer ring air mixing chamber 21 and a fire outlet part 42 area communicated with the central air mixing chamber respectively, secondary air is supplied to the fire outlet part 42 and the fire outlet area of the main fire part 22, the mutual entrainment of hot air after combustion and high temperature of a combustor on the secondary air between the fire outlet part 42 and the main fire part 22 is effectively avoided, the air supply effect is effectively improved, and the defects of yellow flame, tempering and the like cannot occur in the combustor. Further, the partition portion is an annular partition wall, the partition wall is connected with the straight portion 31 through a first horizontal connecting rod 5d, the top of the partition wall extends to the first horizontal connecting rod 5d to form an inverted L-shaped partition plate 301, the peripheral shielding piece 3a is a vertical shielding plate, the vertical shielding plate is connected with the side wall of the partition wall through a second horizontal connecting rod 5a, and the bottom of the partition wall extends downwards to the second horizontal connecting rod 5a and extends to form a horizontal partition portion 301a towards the secondary air supply channel 400. In order to better realize the fire shutting of the lifting pot of the outer ring fire, the outer ring fire cover 2 comprises an annular part 23 and an annular body 24 arranged in the annular part 23, the annular body 24 is provided with a main fire part 22 which is communicated with the outer ring gas mixing chamber 21 and can spray mixed gas towards the inner ring fire cover 4, the annular body 24 can be composed of at least two layers of thin sheet metal sheets and corrugated fire cover sheets arranged between the thin sheet metal sheets, and therefore due to the special design of the outer ring fire cover 2, the peripheral shielding piece 3a can be simply arranged as a vertical shielding plate.

In addition, referring to fig. 3 to 6, the transmission member 600 of the present embodiment is also specially designed, a transmission member 600 for transmitting the fuel gas in the outer ring fuel gas channel 12 to the annular member 23 is disposed between the annular member 23 and the outer ring fuel gas channel 12, the transmission member 600 includes an inner annular wall 6001, an outer annular wall 6002 and a connecting wall 6003 connecting the inner annular wall 6001 and the outer annular wall 6002, which are concentrically disposed at intervals, the connecting wall 6003 is circumferentially provided with at least two vertical outer ring fuel gas channels 6004 which are independent of the secondary fuel gas channel 400 and are used for supplying secondary air to the main flame portion 22, the connecting wall 6003 is provided with vertical connecting portions corresponding to the inner sides of the vertical outer ring fuel gas channels 6004 and horizontal connecting portions 6006 which are located between two adjacent vertical connecting portions and extend radially outward, and the secondary fuel gas channels 400 radially penetrate through the bottom of the connecting wall 6003, the main fire part 22 of the outer ring fire cover 2 of the embodiment has two ways to supplement secondary air, one is the vertical outer ring air supplementing channel 6004, and the other is the space which divides the secondary air supplementing channel 400 into the main fire part 22 area which can be communicated with the outer ring air mixing chamber 21 through the dividing part, so that the full combustion of the outer ring main fire part 22 can be ensured. The transmission piece 600 is further covered with an annular cover plate 700, the annular cover plate 700 comprises a first cover plate part 7001 corresponding to the outer ring gas channel 12 and a second cover plate part 7002 corresponding to the horizontal connecting part 6006, notches 7003 exposed from the vertical outer ring gas supplementing channel 6004 are formed between the adjacent second cover plate parts 7002, and the peripheral part of each notch 7003 is hinged with a third cover plate part 7004 for covering the vertical outer ring gas supplementing channel 6004. In order to realize that the cookware is placed on the moving part 3, the peripheral shielding part 3a is driven to move downwards, so that the main fire part 22 can be exposed, the third cover plate part 7004 can be pressed downwards, the outer ring air supplementing channel is exposed, secondary air is supplemented to the main fire part 22, and the sufficient combustion of the main fire part 22 is promoted. Moreover, an actuating piece 800 capable of actuating the third cover plate part 7004 to open or close relative to the vertical outer ring air replenishing channel 6004 is arranged on the third cover plate part 7004, the actuating piece 800 can actuate the third cover plate part 7004 to rotate under the action of the downward movement of the outer ring shielding piece 3a, and in order to actuate the third cover plate part 7004 better, the actuating piece 800 can better drive the third cover plate part 7004 to rotate when the outer ring shielding piece 3a moves downward, so that the outer ring air replenishing channel is exposed, secondary air is replenished to the main fire part 22, and the sufficient combustion of the main fire part 22 is promoted. The pipe wall of the central gas channel 11 has a through hole 110 for the horizontal connecting rod to pass through, the head of the driving rod 34 can directly move downwards relative to the contraction part 32 under the action of the pot resting thereon, and then the contraction part 32 is driven to move downwards relative to the fixing seat 111, and finally the peripheral shielding piece 3a is driven to move downwards relative to the main fire part 22. Finally, in order to realize the anti-dry heating function of the burner, the driving rod 34 is a temperature sensor, the annular part 23 of the outer ring fire cover 2 is provided with an energy collecting cover 900, and the energy collecting cover 900 is arranged to enable the combustion heat generated by the outer ring fire cover 2 in the combustion process to be better collected so as to better heat the pot bottom.

To sum up, when the pot is placed on the head of the driving rod 34, the head of the driving rod 34 can retract into the outer sleeve 5 and drive the outer sleeve 5, the inner fire cover 4 and the shrinking portion 32 to move downwards relative to the fixing base 111, so as to drive the peripheral shielding piece 3a to move downwards and expose the main fire portion 22, but the bottom of the pot always keeps the distance of the outer sleeve 5 from the inner fire cover 4, the bottom of the pot presses the inner fire cover 4, although the inner fire cover 4 moves downwards relative to the central gas channel 11, and the separating portion of the moving piece 3 can separate the secondary air channel, so as to realize that the secondary air supplementing channel 400 is separated into two relatively independent spaces which respectively communicate the main fire portion 22 area of the outer gas mixing chamber 21 and the fire outlet portion 42 area of the central gas mixing chamber, and in addition, the plate portion 7004 can be pressed downwards during the downward movement of the peripheral shielding piece 3a, so as to expose the outer gas supplementing channel, and then the secondary air is continuously supplemented to the main fire part 22 area of the outer ring air mixing chamber 21, so that the full combustion of the main fire part 22 is promoted, when a user lifts the pot, the driving rod 34 and the contraction part 32 can both return to the initial state, the peripheral shielding piece 3a moves upwards, the main fire part 22 is shielded, and finally the purpose of closing the outer ring fire when the pot is lifted is achieved.

In summary, the burner is adapted to three different pot types during use to generate the following three conditions:

a. a pan: when the pan is resting on the head of the driving rod 34, the pan can move the constriction 32 downwards with respect to the fixed seat 111, and therefore the peripheral screen 3a downwards, so that the main fire portion 22 can be exposed, and the second elastic element 8 is compressed (fig. 14);

b. pot with sharp bottom: because the outer sleeve 5 can support the bottom of the sharp pan to prevent the bottom of the sharp pan from being too close to the inner ring top cover 4d of the inner ring fire cover 4, when the sharp-bottom pan is placed on the head of the driving rod 34, the distance between the bottom of the sharp pan and the inner ring top cover 4d of the inner ring fire cover 4 can drive the contraction part 32 to move downwards relative to the fixing seat 111 (which satisfies the compression of the second elastic part 8), and simultaneously drive the peripheral shielding part 3a to move downwards, so that the main fire part 22 can be exposed, and because the bottom of the sharp-bottom pan is flatter than the bottom pan, the bottom of the sharp-bottom pan can drive the head of the driving rod 34 to retract into the outer sleeve 5 (which satisfies the compression of the first elastic part 7), but the bottom of the sharp-bottom pan and the top cover 401 of the inner ring fire cover 4 keep the distance between the outer sleeve 5 and the bottom of the sharp pan press the inner ring top cover 4d, and when a user lifts the pan, the driving rod 34 and the contraction part 32 can both return, thereby shielding the main fire 22;

c. and (3) passing through a sharp bottom pot: when the pot with the sharp-tipped bottom is placed at the head of the driving rod 34, the head of the driving rod 34 can retract into the outer sleeve 5 (which satisfies the compression of the first elastic element 7), and the outer sleeve 5, the inner ring top cover 4d of the inner ring fire cover 4 and the shrinking portion 32 move downwards relative to the fixing seat 111 (which satisfies the compression of the second elastic element 8 and the third elastic element 9), so as to move the peripheral shielding element 3a downwards, so as to expose the main fire portion 22, meanwhile, the periphery of the driving rod 34 is provided with the shielding portion 340, which can move downwards relative to the pot moving element 3 under the action of placing the head of the driving rod 34 on the pot moving element, so as to at least partially shield the gas hole 322 of the moving element 3, so as to change the gas inlet area of the gas hole 322, but the bottom of the pot with the sharp-tipped bottom always keeps the distance of the outer sleeve 5 from the top cover 401 of the inner ring fire cover 4, although the top cover 401 of the, however, the distance between the bottom of the pot with the sharp-pointed bottom and the inner ring top cover 4d of the inner ring fire cover 4 is kept to be 5 of the outer sleeve, so that the pot bottom of the pot with the sharp-pointed bottom is prevented from pressing the top cover 401 of the inner ring fire cover 4, when a user lifts the pot, the driving rod 34 and the contraction part 32 can both return to the initial state, the peripheral shielding piece 3a moves upwards, the main fire part 22 is shielded, and finally the purpose of closing the outer ring fire when the pot is lifted is achieved (as shown in fig. 15). In addition, a shielding portion 340 provided around the drive lever 34 is provided on the outer sleeve 5. Because the pan bottoms of the pan and the pot with the sharp bottom are not sharp enough, for this reason, the pan and the pot with the sharp bottom are both kept at the distance of the outer sleeve 5 from the top cover 401 of the inner ring fire cover 4 when the pan and the pot are placed at the head of the driving rod 34, and the fire pressing is avoided; when the pot with sharp bottom is placed on the head of the driving rod 34, the outer sleeve 5, the inner ring top cover 4d of the inner ring fire cover 4 and the contraction part 32 can be driven to move downwards relative to the fixing seat 111. In order to prevent the pot with the sharp bottom from pressing the inner ring fire, the top cover 401 and the lower shielding portion 341 can move down along with the outer sleeve 15, so that the top cover 401 can at least partially shield the fire outlet portion 42, thereby changing the air outlet area of the fire outlet portion 42, and the lower shielding portion 341 can reduce the size of the gas flow outlet 1123, thereby changing the gas amount flowing into the fire outlet portion 42, and further realizing the adaptive adjustment of the inner ring fire. In order to further ensure safety, the embodiment preferably adopts a primary air fully-premixed burner or an electrically-controlled valve body, and when the main fire part 22 of the outer ring fire cover 2 is shielded, gas is ensured not to leak outwards.

No matter which type of pan, pot and pot is placed on the head of the driving rod 34, the secondary air supply channel 400 can be divided into two relatively independent spaces by driving the peripheral shielding member 3a to move downwards to drive the partition 30 and the horizontal partition 301a of the partition 30 to move downwards, so as to respectively communicate the main fire portion 22 area of the outer ring air mixing chamber 21 and the fire outlet portion 42 area of the central air mixing chamber.

Claims (15)

1. A burner for a gas range, said burner comprising:

a base (1);

the central gas channel (11), the central gas channel (11) is a cylindrical structure with an upward opening, and is arranged at the central part of the base (1);

inner ring fire lid (4), inner ring fire lid (4) including connect in the annular wall (400) at the top of central authorities gas channel (11), set up go out fire portion (42) and top cap (401) of covering on annular wall (400) on this annular wall (400), its characterized in that: the annular wall surface (400) of the inner ring fire cover (4) is provided with an annular liquid collecting groove (110) which extends inwards along the radial direction and is used for containing overflowing liquid, the bottom of the annular liquid collecting groove (110) is connected with a third elastic piece (9), the upper end of the third elastic piece (9) is connected to the top cover (401), and the third elastic piece (9) enables the top cover (401) to always have the tendency of being capable of returning to be flush with the top opening of the central gas channel (11).

2. Burner for gas cooktops according to claim 1, characterized in that: the annular liquid collecting tank (110) comprises a vertical flange (1101) extending towards the center, and a first outflow opening (112) for gas to flow to the fire outlet part (42) is formed between the top of the vertical flange (1101) and the top cover (401) of the inner ring fire cover (4).

3. Burner for gas cooktops according to claim 2, characterized in that: a movable piece (3) is arranged in the central gas channel (11), a gap between the outer wall of the movable piece (3) and the central gas channel (11) forms a channel (1100) for supplementing gas to the fire outlet part (42), the channel (1100) is provided with a second outlet (1121) which is in fluid communication with the first outlet (112), the movable piece (3) further comprises a driving rod (34) which can be elastically arranged in a cavity (321) of the movable piece (3), a lower shielding part (341) which is arranged at an interval with the top cover (401) is arranged on the periphery of the driving rod (34), the lower shielding part (341) is arranged above the second outlet (1121), a gas outlet (1123) for gas to flow into the first outlet (112) is formed between the lower shielding part (341) and the second outlet (1121), and the head of the driving rod (34) can be forced to be opposite to the central gas channel (11) under the action of placing the movable piece on the movable piece ) When the gas outlet cover moves downwards, the top cover (401) can at least partially shield the fire outlet part (42) so as to change the gas outlet area of the fire outlet part (42), and the lower shielding part (341) can reduce the size of the gas flow outlet (1123) so as to change the gas quantity flowing into the fire outlet part (42).

4. Burner for gas cooktops according to claim 3, characterized in that: the moving part (3) is divided into two parts from bottom to top according to the change of the cross section: with straight portion (31) and the ascending constriction portion of horn mouth (32) of the internal diameter looks adaptation of central authorities gas channel (11), the afterbody elasticity of actuating lever (34) is located constriction portion (32), and central authorities gas channel (11) are provided with and supply the fixing base (111) of constriction portion (32) relative its removal, second outfall sets up at interval on straight portion (31).

5. Burner for gas cooktops according to claim 4, characterized in that: an outer sleeve (5) is arranged on the periphery of the driving rod (34), a limiting groove (331) for the relative movement of the outer sleeve (5) is arranged in the center of the contraction part (32), the outer sleeve (5) and the inner ring fire cover (4) are arranged integrally, the bottom of the limit groove (331) is provided with a first supporting rod (6), a first elastic piece (7) is connected between the upper end of the first supporting rod (6) and the lower end of the driving rod (34), the outer sleeve (5) is sleeved on the periphery of the first supporting rod (6), and a space is arranged between the first elastic piece (7) and the bottom of the limiting groove (331), the head of the driving rod (34) always has the tendency of being exposed out of the top of the outer sleeve (5), the top cover (401) and the lower shielding part (341) are both arranged on the outer sleeve (5).

6. Burner for gas cooktops according to claim 5, characterized in that: the bottom of the contraction part (32) is provided with a contraction foot (332) which contracts inwards in the radial direction, a second elastic piece (8) is sleeved on the contraction foot (332), the tail end of the second elastic piece (8) is connected into the central pipeline of the fixed seat (111), and the arrangement of the second elastic piece (8) enables the contraction part (32) to have the tendency of returning to the original position all the time.

7. The burner for a gas range according to any one of claims 1 to 6, wherein: also includes:

an outer ring gas channel (12) arranged at the peripheral part of the central gas channel (11) of the base (1);

the outer ring fire cover (2) is arranged on the outer ring gas channel (12), is provided with an outer ring gas mixing chamber (21) and is provided with a main fire part (22) communicated with the outer ring gas mixing chamber (21);

the air supplementing cavity (500) is formed between the inner ring air mixing chamber (41) and the outer ring air mixing chamber (21);

the base (1) is also provided with a plurality of radial secondary air supplementing channels (400) at intervals along the circumferential direction, and the secondary air supplementing channels are used for communicating the air supplementing cavity (500) with the outside;

the movable part (3) is characterized by further comprising a peripheral shielding piece (3a) used for shielding the main fire part (22), the driving rod (34) of the movable part (3) can be directly triggered under the action of the pot placed on the driving rod, so that the main fire part (22) is exposed, the movable part (3) is further provided with a partition part (30) arranged in the secondary air supply channel (400), the secondary air supply channel (400) can be divided into two relatively independent spaces by the partition part (30), and the main fire part (22) area and the fire outlet part (42) area of the central air supply chamber are respectively communicated with the outer ring air mixing chamber (21).

8. Burner for gas cooktops according to claim 7, characterized in that: partition portion (30) are for being annular partition wall, the partition wall with straight portion (31) are connected through first horizontal connecting rod (5d), the top of partition wall has inversion L type baffle (301) to extending on first horizontal connecting rod (5d), peripheral shielding piece (3a) is vertical shielding plate, vertical shielding plate with connect through second horizontal connecting rod (5a) between the lateral wall of partition wall, the bottom of partition wall extends downwards to second horizontal connecting rod (5a), and the orientation secondary tonifying qi passageway (400) extend there is horizontal partition portion (301 a).

9. Burner for gas cooktops according to claim 8, characterized in that: the outer ring fire cover (2) comprises an annular part (23) and an annular body (24) arranged in the annular part (23), and the annular body (24) is provided with a main fire part (22) which is communicated with the outer ring gas mixing chamber (21) and can spray mixed gas towards the inner ring fire cover (4).

10. Burner for gas cooktops according to claim 9, characterized in that: a transmission piece (600) used for transmitting gas in the outer ring gas channel (12) to the annular part (23) is arranged between the annular part (23) and the outer ring gas channel (12), the transmission piece (600) comprises an inner annular wall (6001), an outer annular wall (6002) and a connecting wall (6003) connected between the inner annular wall (6001) and the outer annular wall (6002), which are concentrically arranged at intervals, at least two vertical outer ring gas supplementing channels (6004) which are independent of the secondary gas supplementing channel (400) and used for supplementing secondary air to the main fire part (22) are arranged on the connecting wall (6003) along the circumferential direction, vertical connecting parts (6005) communicated with the outer ring gas channel (12) and horizontal connecting parts (6006) which are located between two adjacent vertical connecting parts (6005) and extend outwards along the radial direction are arranged on the inner side of each vertical outer ring gas supplementing channel (6004), and the secondary air supply channel (400) radially penetrates the bottom of the connecting wall (6003).

11. Burner for gas cooktops according to claim 10, characterized in that: transmission piece (600) coats and is stamped cyclic annular apron (700), cyclic annular apron (700) including first apron (7001) that corresponds outer loop gas channel (12) and second apron (7002) that corresponds horizontal connecting portion (6006), form the confession between adjacent second apron (7002) breach (7003) that vertical outer loop tonifying qi passageway (6004) exposed, each the peripheral portion of breach (7003) articulates has third apron (7004) that is used for covering vertical outer loop tonifying qi passageway (6004).

12. Burner for gas cooktops according to claim 11, characterized in that: an actuating piece (800) capable of actuating the third cover plate part (7004) to open or close relative to the vertical outer ring air replenishing channel (6004) is arranged on the third cover plate part (7004), and the actuating piece (800) can actuate the third cover plate part (7004) to rotate under the triggering of the action that the peripheral shielding piece (3a) moves downwards.

13. The burner for a gas range according to any one of claims 7 to 12, wherein: the pipe wall of the central gas channel (11) is provided with a through hole (110) for the first horizontal connecting rod (5d) to penetrate through, the head of the driving rod (34) can directly move downwards relative to the contraction part (32) under the action of placing a pot thereon, then the contraction part (32) is driven to move downwards relative to the fixed seat (111), and finally the peripheral shielding piece (3a) is driven to move downwards relative to the main fire part (22).

14. Burner for gas cooktops according to claim 13, characterized in that: the drive rod (34) is a temperature sensor.

15. Burner for gas cooktops according to claim 14, characterized in that: and an energy gathering cover (900) is arranged on the annular component (23) of the outer ring fire cover (2).

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