CN111750354A

CN111750354A - Burner for gas stove

Info

Publication number: CN111750354A
Application number: CN202010505596.6A
Authority: CN
Inventors: 苏慧玲; 郑军妹; 俞瑜; 严力峰
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-10-09

Abstract

The invention relates to a burner for a gas stove, which comprises 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; the outer ring gas channel that sets up the peripheral position at the central gas channel of base sets up on outer ring gas channel to be formed with outer ring gas mixing chamber, have the outer ring fire lid of the main fire portion that is linked together with outer ring gas mixing chamber, its characterized in that: the cooker has the advantages that the outer ring fire is closed when the cooker is lifted, the problems that the furnace fire is still burnt continuously at intervals such as seasoning adding and tray loading in the cooking process are solved, and the purposes of saving fuel and saving energy are achieved.

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. The invention discloses a full-automatic energy-saving stove, which is a Chinese invention patent with the patent number ZL200420034149.3 (with the publication number CN2731307Y), and 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 a pot on the stove body; 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 can effectively avoid the mutual influence of an inner ring and an outer ring when secondary air is sucked in a pot-sitting state, in view of the above-mentioned current state of the prior art.

A second technical problem to be solved by the present invention is to provide a burner for a gas range, which can easily realize the closing of the outer ring fire by lifting the pot, in view of the above-mentioned prior art.

The third technical problem to be solved by the present invention is to provide a burner for a gas stove, which can better supplement secondary air to an outer ring of a pot in a pot-sitting state, in view of the above-mentioned current state of the prior 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;

the inner ring fire cover is arranged above the central gas channel, is provided with an inner ring gas mixing chamber and is provided with a fire outlet part communicated with the inner ring gas mixing chamber;

the outer ring gas channel is arranged at the peripheral part of the central gas 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 is provided with a main fire part communicated with the outer ring gas mixing chamber;

the method is characterized in that: also includes:

the transmission piece is positioned between the outer ring fuel gas channel and the outer ring fire cover and used for transmitting fuel gas in the outer ring fuel gas channel to the outer ring fire cover, the transmission piece comprises a vertical outer ring transmission channel used for transmitting the fuel gas to the main fire part, at least two secondary air supply channels arranged at intervals along the circumferential direction and communicated with the outside, and an annular cavity communicated with the secondary air supply channels, and first air outlets communicated with the annular cavity and the main fire part and second air outlets positioned at the lower row of the first air outlets and communicated with the fire outlet part are arranged on the inner side wall forming the annular cavity at intervals along the circumferential direction; and

the movable piece is arranged in the central gas channel and comprises a peripheral shielding piece for shielding the main fire part, the peripheral shielding piece of the movable piece can shield the main fire part in a natural state, the movable piece can move downwards under the action of placing the cookware on the movable piece, the exposure of the main fire part is realized, and the first gas outlet and the second gas outlet can be separated in the state that the movable piece moves downwards.

To solve the second technical problem, preferably, the movable member is divided into three parts from bottom to top according to the change of the cross section: with straight portion, the portion of narrowing and the bellmouth constriction portion up of central authorities ' gas passageway's internal diameter looks adaptation still include that the afterbody lies in elastically the actuating lever of constriction portion, the head of actuating lever expose in the inner ring fire lid, and central authorities ' gas passageway is provided with and supplies the fixing base of constriction portion relative its removal. When the cookware is placed on the head of the driving rod, the contraction part can be driven to move downwards relative to the fixing seat, so that the peripheral shielding piece is driven to move downwards, the main fire part can be exposed, when a user lifts the cookware, the driving rod and the contraction part can both return to the initial state, the peripheral shielding piece moves upwards, and the main fire part is shielded.

Further, the movable element further comprises a vertical separation part extending out of the central gas channel and a horizontal separation part extending towards the annular cavity, the vertical separation part is connected with the peripheral shielding piece through a connecting piece, and the horizontal separation part abuts against the first gas outlet in the state that the movable element moves downwards, so that the first gas outlet and the second gas outlet can be separated by the vertical separation part.

Further, the connecting piece is a connecting rod or an annular connecting plate.

To solve the third technical problem, preferably, the annular connecting plate is inclined gradually from bottom to top toward the peripheral shield. The inclined arrangement of the annular connecting plate can guide the secondary air flowing into the first air outlet to the main fire part more quickly so as to promote the sufficient combustion of the main fire part.

Preferably, the annular connecting plate and the vertical partition are provided with partition blocks at intervals along the circumferential direction, and the partition blocks enable a gap for secondary air on the periphery of the central gas channel to enter to be formed between the annular connecting plate and the vertical partition.

Furthermore, the straight portion is connected with the vertical separating portion through a horizontal connecting rod, a through hole for the horizontal connecting rod to penetrate through is formed in the pipe wall of the central gas channel, the head portion of the driving rod can directly move downwards relative to the contraction portion under the action of placing a pot on the driving rod, then the contraction portion is driven to move downwards relative to the fixing seat, finally the peripheral shielding piece is driven to move downwards relative to the main fire portion, the moving piece is provided with a cavity for gas in the central gas channel to flow into, the cavity is in fluid communication with the inner ring fire cover, the wall portion of the moving piece is provided with at least one gas hole for gas in the central gas channel to flow into, and the straight portion limits that the gas can only flow into the inner ring fire cover from the gas hole.

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 outer sleeve can support the bottom of a sharp pot, the phenomenon that the distance between the bottom of the sharp pot and the inner ring fire cover is too close is avoided, when a pot is placed at the head of the driving rod, the head of the driving rod can retract into the outer sleeve, and meanwhile, the contraction part can be driven to move downwards relative to the fixing seat, so that the peripheral shielding part is driven to move downwards, the main fire part can be exposed, the bottom of the sharp pot always keeps the distance of the outer sleeve with the inner ring fire cover, the inner ring fire cover is pressed at the bottom of the sharp pot, when a user lifts the pot, the driving rod and the contraction part can both return to the initial state, the peripheral shielding part moves upwards, and the main fire part is shielded.

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.

In order to better realize the closing of the outer ring fire after the pot is lifted, the outer ring fire cover preferably 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. The annular body can be formed by at least two layers of thin sheet metal sheets and a corrugated fire cover sheet arranged between the thin sheet metal sheets, and the structure of the peripheral shielding piece can be simpler because the outer ring fire cover is of the structure.

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 better gather combustion heat generated in the combustion process of the burner so as to better heat the pot bottom.

Further, the inner ring fire cover comprises an inner ring peripheral wall and an inner ring top cover covering the inner ring peripheral wall, the inner ring top cover is a mesh-type top cover, the inner ring top cover can move relative to the central gas channel, a groove extending inwards in the radial direction is formed in the inner wall of the central gas channel, a third elastic piece is connected to the bottom of the groove, the upper end of the third elastic piece is connected to the inner ring fire cover, and the third elastic piece enables the inner ring fire cover to always have the tendency of being capable of being restored to be flush with the top opening of the central gas channel. When the sharp-pointed pan is placed at the head of the driving rod, the head of the driving rod can retract into the outer sleeve and drive the outer sleeve, the inner ring top cover of the inner ring fire cover and the contraction part to move downwards relative to the fixing seat, so that the peripheral shielding piece is driven to move downwards and the main fire part can be exposed, the pan bottom of the sharp-pointed pan keeps the distance of the outer sleeve from the inner ring fire cover all the time, the pan bottom of the sharp-pointed pan presses the inner ring fire cover, although the inner ring fire cover moves downwards relative to the central gas channel, the pan bottom of the sharp-pointed pan always keeps the distance of the outer sleeve from the inner ring fire cover, the inner ring fire cover is prevented from being pressed by the pan bottom of the sharp-pointed pan, and when a user lifts the pan, the driving rod and the contraction part can both return to the initial state, and the peripheral shielding piece moves upwards, so that the main.

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

Compared with the prior art, the invention has the advantages that when the cooker is placed on the central gas channel, the moving part is pressed to move downwards and simultaneously drives the peripheral shielding part to move downwards so as to expose the fire outlet part for cooking, when the cooker is lifted to leave the central gas channel, the moving part moves upwards again and simultaneously drives the peripheral shielding part to move upwards so as to realize the purpose that the cooker is lifted to close the outer ring fire, the furnace fire is still combusted at intervals such as adding seasonings and loading dishes in the cooking process, the aims of saving fuel and saving energy are realized, in addition, the moving part can form two independent gas outlets in the moving downwards process, the phenomenon that the combusted hot gas flow and the high temperature of the combustor generate mutual entrainment on secondary air which is supplemented between the main fire outlet part and the fire outlet part is effectively avoided, the gas supply effect is effectively improved, and the flame of the combustor is short, uniform and powerful, the defects of yellow flame, tempering and the like can not occur.

Drawings

FIG. 1 is a schematic view of a burner in accordance with embodiment 1 of the present invention;

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

FIG. 3 is a sectional view showing a state where the burner is seated in the pot in embodiment 1 of the present invention (the peripheral shielding member is moved down to expose the main flame portion of the outer flame cover while the first air outlet is in a state of maximum opening);

FIG. 4 is a sectional view showing a state where the burner is not seated in the pot in embodiment 1 of the present invention (the peripheral shield member is in an upward-moving state to shield the main flame portion of the outer flame cover while the second air outlet is in a maximum opening state);

fig. 5 is a schematic structural view of the movable member according to embodiment 1 of the present invention;

FIG. 6 is a cross-sectional view of FIG. 5;

fig. 7 is a schematic structural view of a conveying member in embodiment 1 of the present invention;

fig. 8 is a cross-sectional view of fig. 7.

Detailed Description

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

As shown in fig. 1 to 8, which are the best embodiments of the present invention, the burner for a gas stove in the present embodiment includes a base 1, a central gas channel 11 disposed at the central portion of the base 1, the central gas channel 11 is a cylindrical structure with an upward opening, an inner ring fire cover 4 disposed on the central gas channel 11 and formed with an inner ring gas mixing chamber 41, and the inner ring fire cover 4 has a fire outlet 42 communicated with the inner ring gas mixing chamber 41; and an outer ring gas channel 12 arranged at the peripheral part of the central gas channel 11 of the base 1, wherein an outer ring fire cover 2 is arranged on the outer ring gas channel 12, an outer ring gas mixing chamber 21 is formed by the outer ring fire cover 2 and the outer ring gas channel 12, and the outer ring fire cover 2 is provided with a main fire part 22 communicated with the outer ring gas mixing chamber 21; the gas transmission device further comprises a transmission piece 600, wherein the transmission piece 600 is located between the outer ring gas channel 12 and the outer ring fire cover 2 and used for transmitting gas in the outer ring gas channel 12 to the outer ring fire cover 2, the transmission piece 600 comprises a vertical outer ring transmission channel 6004 used for transmitting gas to the main fire part 22, at least two secondary gas supply channels 400 arranged at intervals along the circumferential direction and communicated with the outside, and an annular cavity communicated with the secondary gas supply channels 400, and the transmission piece 600 is provided with a first gas outlet 6011 communicated with the annular cavity 601 and the main fire part 22 and a second gas outlet 6012 located below the first gas outlet 6011 and communicated with the fire outlet part 42 on the inner side wall forming the annular cavity 601 at intervals along the circumferential direction; and a movable member 3, the movable member 3 being disposed in the central gas passage 11 and including a peripheral shielding member 3a for shielding the main fire portion 22, wherein in a natural state, the peripheral shielding member 3a of the movable member 3 can shield the main fire portion 22, and the movable member 3 can move down under the action of a pot placed thereon, thereby exposing the main fire portion 22, and the movable member 3 can separate the first gas outlet 6011 from the second gas outlet 6012 in a state of moving down. When a cooker is placed on the inner ring fire cover 4, the movable part 3 moves downwards under pressure and drives the peripheral shielding part 3a to move downwards so as to expose the fire outlet part 42 for cooking, when the cooker is lifted to leave the inner ring fire cover 4, the movable part 3 moves upwards again and drives the peripheral shielding part 3a to move upwards so as to realize the purpose that the cooker is lifted to close the outer ring fire, the furnace fire is still continuously burnt during the interval time periods of seasoning and plate loading in the cooking process, the purposes of saving fuel and saving energy are realized, two independent air supply channels can be formed by the separation effect of the movable part 3 in the moving downwards process, the phenomenon that secondary air supplied between the main fire part 22 and the hot air outlet part 42 is mutually sucked by the high temperature of the burner after burning is effectively avoided, the air supply effect is effectively improved, and the flame of the burner is short, even and powerful, the defects of yellow flame, tempering and the like can not occur.

Specifically, the moving member 3 is divided into three parts from bottom to top according to the change of the cross section: the gas burner comprises a straight portion 31 matched with the inner diameter of the central gas channel 11, a narrowed portion 32, a contraction portion 33 with an upward horn mouth, and a driving rod 34 with the tail portion elastically positioned at the contraction portion 33, wherein the head portion of the driving rod 34 is exposed out of the inner ring fire cover 4, and the central gas channel 11 is provided with a fixed seat 111 capable of enabling the contraction portion 33 to move relative to the central gas channel. When the pot is placed on the head of the driving rod 34, the contraction part 33 can be driven to move downwards relative to the fixing seat 111, so as to drive the peripheral shielding part 3a to move downwards, so that the main fire part 22 can be exposed, and when a user lifts the pot, the driving rod 34 and the contraction part 33 can both return to the initial state, and the peripheral shielding part 3a moves upwards, so as to shield the main fire part 22. In order to realize that the movable element 3 further comprises a vertical separating part 30 which extends out of the central gas channel 11 and a horizontal separating part 30 ' which extends towards the annular cavity, and the secondary air after being divided is guided to the main fire part 22 more quickly, the movable element further comprises a vertical separating part 30 which extends out of the central gas channel 11 and a horizontal separating part 30 ' which extends towards the annular cavity, the vertical separating part 30 is connected with the peripheral shielding piece 3a through an annular connecting plate 302, and the horizontal separating part 30 ' is abutted against the first air outlet 6011 in the moving state of the movable element 3), so that the vertical separating part 30 can separate the first air outlet 6011 from the second air outlet 6012. The present embodiment takes the annular connecting plate 302 as an example, wherein the inclined arrangement of the annular connecting plate 302 can achieve that the divided secondary air is more quickly guided to the main fire part 22 to promote the sufficient combustion of the main fire part 22. Preferably, a partition block 303 is provided between the annular connecting plate 302 and the vertical partition 30 at a circumferential interval, and the partition block 303 provides a gap between the annular connecting plate 302 and the partition wall for secondary air to enter from the periphery of the central gas passage 11. The straight portion 31 is connected with the vertical separating portion 30 through the horizontal connecting rod 5d, a through hole 110 for the horizontal connecting rod 5d to penetrate through is formed in the pipe wall of the central gas channel 11, the head portion of the driving rod 34 can directly move downwards relative to the contraction portion 33 under the action of placing a pot thereon, then the contraction portion 33 is driven to move downwards relative to the fixing seat 111, finally the peripheral shielding piece 3a is driven to move downwards relative to the main fire portion 22, the movable piece 3 is provided with a cavity 321 for gas in the central gas channel 11 to flow into, the cavity 321 is in fluid communication with the inner ring fire cover 4, the wall portion of the movable piece 3 is provided with at least one gas hole 322 for gas in the central gas channel 11 to flow into, and the straight portion 31 limits that the gas can only flow into the inner ring fire cover 4 from. The outer sleeve 5 is arranged on the periphery of the driving rod 34, the limiting groove 331 for relative movement of the outer sleeve 5 is arranged in the center of the contraction part 33, the outer sleeve 5 and the inner ring fire cover 4 are integrally arranged, the first supporting rod 6 is arranged at the bottom of the limiting groove 331, the first elastic part 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, a space is arranged between the bottoms of the limiting groove 331, the first elastic part 7 is arranged to enable the head of the driving rod 34 to always have a tendency of being exposed out of the top of the outer sleeve 5, the outer sleeve 5 can abut against the bottom of the sharp pot to avoid that the bottom of the sharp pot is too close to the inner ring fire cover 4, when the pot 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 simultaneously can drive the contraction part 33 to move downwards relative to the, therefore, the main fire part 22 can be exposed, but the distance between the pot bottom of the sharp pot and the inner ring fire cover 4 is kept to be the same as that of the outer sleeve 5, the pot bottom of the sharp pot presses the inner ring fire cover 4, when a user lifts the pot, the driving rod 34 and the contraction part 33 can both return to the initial state, and the peripheral shielding piece 3a moves upwards to shield the main fire part 22. In addition, the bottom of the contraction part 33 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 33 to always have the tendency of returning to the original position. In order to better realize the closing of the outer ring fire after the lifting of the pot, 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 communicated with the outer ring gas mixing chamber 21 and capable of spraying mixed gas towards the inner ring fire cover 4, and the annular body 24 can be composed of at least two layers of thin sheet metal sheets and a corrugated fire cover sheet arranged between the thin sheet metal sheets. And the annular part 23 of the outer ring fire cover 2 is also provided with an energy-gathering cover which can better gather the combustion heat generated in the combustion process of the burner so as to better heat the pot bottom. The inner ring fire cover 4 can also move relative to the central gas channel 11, the inner wall of the central gas channel 11 is provided with a groove 112 which extends inwards along the radial direction, the bottom of the groove 112 is connected with a third elastic part 9, the upper end of the third elastic part 9 is connected with the inner ring fire cover 4, and the third elastic part 9 enables the inner ring fire cover 4 to always have the tendency of being capable of returning to be flush with the top opening of the central gas channel 11. When a pot 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 33 to move downwards relative to the fixing 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 pot always keeps a distance from the inner ring fire cover 4 to the outer sleeve 5, the bottom of the sharp pot presses the inner ring fire cover 4, and when a user lifts the pot, the driving rod 34 and the contraction part 33 can both 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 bottom of the contraction part 33 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 33 to always have the tendency of returning to the original position. The outer ring fire cover 2 of the present embodiment includes an annular member 23 and an annular body 24 provided in the annular member 23, the annular body 24 having a main fire portion 22 communicating with the outer ring gas mixing chamber 21 and capable of ejecting a gas mixture toward the inner ring fire cover 4. This annular body 24 can be constituted by at least two layers of thin sheet metal sheets and the corrugated fire lid sheet arranged between the thin sheet metal sheets, and because the outer ring fire lid 2 is this structure, the structure of the peripheral shielding member 3a can be made simpler. Finally, in order to adapt to a sharp pot with a more sharp pot bottom, the inner ring fire cover 4 comprises an inner ring peripheral wall 4c and an inner ring top cover 4d covering the inner ring peripheral wall 4c, the inner ring peripheral wall 4c is arranged on the central gas channel 11 and is provided with at least two fire outlet parts 41c along the circumferential direction, the inner ring top cover 4d can move relative to the central gas channel 11, the inner wall of the central gas channel 11 is provided with a groove 112 extending inwards along the radial direction, the bottom of the groove 112 is connected with a third elastic part 9, the upper end of the third elastic part 9 is connected with the inner ring top cover 4d of the inner ring fire cover 4, and the third elastic part 9 enables the inner ring top cover 4d of the inner ring fire cover 4 to always have the tendency of being capable of being in flush with the top opening of the central gas channel 11. When a pot 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 drive the outer sleeve 5, the inner ring top cover 4d of the inner ring fire cover 4 and the contraction part 33 to move downwards relative to the fixing seat 111, so that the peripheral shielding piece 3a is driven to move downwards and the main fire part 22 can be exposed, but the bottom of the sharp pot always keeps the distance from the outer sleeve 5 to the inner ring top cover 4d of the inner ring fire cover 4, the bottom of the sharp pot presses the inner ring top cover 4d of the inner ring fire cover 4, and although the inner ring fire cover 4 moves downwards relative to the central gas channel 11, the bottom of the sharp pot always keeps the distance from the inner ring top cover 4d of the inner ring fire cover 4 to the outer sleeve 5. The elastic coefficient of the second elastic element 8 is far smaller than that of the first elastic element 7, so that the main fire part 22 of the outer ring fire cover 2 is opened firstly after the second elastic element is put on the pot. In this example, the maximum deformation amount of the second elastic member 8 is the total height of the main fire portion 22 of the outer fire cover 2, and when the moving amount of the driving lever 34 is larger than the main fire portion 22 of the outer fire cover 2, the first elastic member 7 buffers the movement. The maximum deformation of first elastic element 7 is the height of drive rod 34 above outer sleeve 5 plus the deformation of third elastic element 9. The three spring motion sequences of the first elastic element 7, the second elastic element 8 and the third elastic element 9 are as follows: the second elastic element 8 is compressed first to the extreme position (resting state of the pan), then the first elastic element 7 is compressed (resting state of the pot), and finally the first elastic element 7, the second elastic element 8 and the third elastic element 9 are compressed together (resting state of the pot over the tip); the height of the outer sleeve 5 is preferably 7-14mm and the drive rod 34 is >10mm above the uppermost surface of the pot support. The ring-shaped member 23 of the outer ring fire cover 2 is provided with a power concentrating cover 700, and the power concentrating cover 700 can better concentrate the combustion heat generated during the combustion process of the burner to better heat the bottom of the pan.

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 rested on the head of the driving rod 34, the pan can drive the contraction part 33 to move downwards relative to the fixed seat 111, so as to drive the peripheral shielding piece 3a to move downwards, so as to expose the main fire part 22, and at the moment, the second elastic piece 8 is compressed;

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 33 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 pan and the inner ring top cover 4d of the inner ring fire cover 4 keep the distance between the bottom of the sharp pan and the inner ring top cover 4d, the bottom of the sharp pan presses the inner ring fire cover 4, and when a user lifts, upward movement of the peripheral shield 3a, 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 33 are driven to 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 drive the peripheral shielding element 3a to move 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 moving element 3 under the action of the head of the driving rod 34 placed on the moving element by the pot, 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 inner ring top cover 4d of the inner ring fire cover 4, although the inner ring, however, the distance between the pot 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, the pot bottom of the pot with the sharp-pointed bottom is prevented from pressing the inner ring top cover 4d of the inner ring fire cover 4, when a user lifts the pot, the driving rod 34 and the contraction part 33 can both return to the initial state, the peripheral shielding piece 3a moves upwards, the main fire part 22 is shielded, and the purpose of closing the outer ring fire when the pot is lifted is finally achieved. 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 distance of the outer sleeve 5 can be kept between the pan bottoms and the inner ring top cover 4d of the inner ring fire cover 4 under the state that the pan bottoms are placed at the head of the driving rod 34, and the fire suppression 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 33 can be driven to move downwards relative to the fixing seat 111, and thus, the pot with sharp bottom is driven. 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 used, when the pan, pot and pot is placed on the head of the driving rod 34, the pan, pot and pot can drive the peripheral shielding member 3a to move down to open the main fire portion 22, and the horizontal separating portion 30' of the movable member 3 abuts against the lower portion of the first air outlet 6011, so that the vertical separating portion 30 can separate the first air outlet 6011 from the second air outlet 6012. Since the main fire portion 22 is in the open state, the first air outlet 6011 is also in the maximum opening state, so that the secondary air flowing from the secondary air supply passage 400 can be directly supplied to the main fire portion 22 of the outer ring fire cover 2 through the first air outlet 6011 (see fig. 3, in which hollow arrows indicate a supply path of the secondary air to the main fire portion 22, and dotted arrows indicate a supply path of the secondary air to the fire outlet portion 42), and the secondary air flowing from the secondary air supply passage 400 can be directly supplied to the fire outlet portion 42 of the inner ring fire cover 4 through the second air outlet 6012 by the partition action of the vertical partition portion 30 of the movable member.

Example 2

The structure is basically the same as that of the embodiment 1, and the only difference is that: the vertical partition 30 is connected to the peripheral shield 3a by a connecting rod.

Claims

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);

the inner ring fire cover (4) is arranged on the central gas channel (11), is provided with an inner ring gas mixing chamber (41) and is provided with a fire outlet part (42) communicated with the inner ring gas mixing chamber (41);

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 method is characterized in that: also includes:

the transmission piece (600) is positioned between the outer ring gas channel (12) and the outer ring fire cover (2) and used for transmitting the gas in the outer ring gas channel (12) to the outer ring fire cover (2), the transmission piece (600) comprises a vertical outer ring transmission channel (6004) used for transmitting the gas to the main fire part (22), at least two secondary gas supply channels (400) arranged at intervals along the circumferential direction and communicated with the outside and an annular cavity (601) communicated with the secondary gas supply channels (400), and a first gas outlet (6011) communicated with the annular cavity (601) and the main fire part (22) and a second gas outlet (6012) positioned below the first gas outlet (1) and communicated with the fire outlet part (42) are circumferentially and intermittently arranged on the inner side wall forming the annular cavity (601) of the transmission piece (600); and

the movable piece (3) is arranged in the central gas channel (11) and comprises a peripheral shielding piece (3a) used for shielding the main fire part (22), in a natural state, the peripheral shielding piece (3a) of the movable piece (3) can shield the main fire part (22), the movable piece (3) can move downwards under the action of placing a pot thereon, and therefore exposure of the main fire part (22) is achieved, and the first gas outlet (6011) and the second gas outlet (6012) can be separated under the condition that the movable piece (3) moves downwards.

2. Burner for gas cooktops according to claim 1, characterized in that: the moving part (3) is divided into three parts from bottom to top according to the change of the cross section: with straight portion (31), the portion of narrowing (32) and the ascending shrink portion of horn mouth (33) of the internal diameter looks adaptation of central gas passageway (11), still include the afterbody and lie in elastically the actuating lever (34) of shrink portion (33), the head of actuating lever (34) expose in inner ring fire lid (4), and central gas passageway (11) are provided with and supply the fixing base (111) that shrink portion (33) moved relative to it.

3. Burner for gas cooktops according to claim 2, characterized in that: the movable piece further comprises a vertical separating portion (30) extending out of the central gas channel (11) and a horizontal separating portion (30') extending towards the annular cavity, the vertical separating portion (30) is connected with the peripheral shielding piece (3a) through a connecting piece, and the horizontal separating portion abuts against the first gas outlet (6011) in the state that the movable piece (3) moves downwards, so that the first gas outlet (6011) and the second gas outlet (6012) can be separated by the vertical separating portion (30).

4. Burner for gas cooktops according to claim 3, characterized in that: the connecting piece is a connecting rod or an annular connecting plate.

5. Burner for gas cooktops according to claim 4, characterized in that: the annular connecting plate is gradually inclined from bottom to top towards the peripheral shielding piece (3 a).

6. Burner for gas cooktops according to claim 5, characterized in that: and separating blocks (303) are arranged between the annular connecting plate (302) and the vertical separating part (30) at intervals along the circumferential direction, and gaps for secondary air at the periphery of the central gas channel (11) to enter are formed between the annular connecting plate (302) and the vertical separating part (30) due to the separating blocks (303).

7. The burner for a gas range according to any one of claims 2 to 6, wherein: the straight portion (31) is connected with the vertical partition portion (30) through a connecting rod (5d), the pipe wall of the central gas channel (11) is provided with a through hole (110) for the horizontal connecting rod (5d) to penetrate out, the head of the driving rod (34) can directly move downwards relative to the contraction part (33) under the action of placing a pot thereon, then the contraction part (33) 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), the movable piece (3) is provided with a cavity (321) for the gas in the central gas channel (11) to flow in, the cavity (321) is communicated with the inner ring fire cover (4) in a fluid mode, and the wall of the movable element (3) has at least one gas hole (322) for the inflow of gas in the central gas channel (11), the straight portion (31) limits the gas to flow into the inner ring fire cover (4) only from the gas hole (322).

8. Burner for gas cooktops according to claim 7, characterized in that: the periphery of actuating lever (34) is provided with outer tube (5), the central authorities of shrink portion (33) have the confession outer tube (5) relative movement's spacing groove (331), outer tube (5) with interior ring fire lid (4) an organic whole sets up, the bottom of spacing groove (331) is provided with first supporting rod (6), the upper end of first supporting rod (6) with be connected with first elastic component (7) between the lower extreme of actuating lever (34), outer tube (5) cover is established the periphery of first supporting rod (6), and in have the interval between the bottom of spacing groove (331), the setting up of first elastic component (7) can make the head of actuating lever (34) have all the time expose in the trend at the top of outer tube (5).

9. Burner for gas cooktops according to claim 8, characterized in that: the bottom of the contraction part (33) 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 (33) to have the tendency of returning to the original position all the time.

10. Burner for gas cooktops according to claim 9, 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).

11. Burner for gas cooktops according to claim 10, characterized in that: and an energy gathering cover (700) is arranged on the annular component (23) of the outer ring fire cover (2).

12. Burner for gas cooktops according to claim 11, characterized in that: the inner ring fire cover (4) comprises an inner ring peripheral wall (4c) and an inner ring top cover (4d) covering the inner ring peripheral wall (4c), the inner ring top cover (4d) is a mesh type top cover, the inner ring top cover (4d) can move relative to the central gas channel (11), the inner wall of the central gas channel (11) is provided with a groove (112) extending inwards in the radial direction, the bottom of the groove (112) is connected with a third elastic piece (9), the upper end of the third elastic piece (9) is connected to the inner ring fire cover (4), and the third elastic piece (9) enables the inner ring fire cover (4) to have a tendency of being capable of being always flush with the top opening of the central gas channel (11).

13. The burner for a gas range according to any one of claims 8 to 12, wherein: the drive rod (34) is a temperature sensor.