CN112344331A - Fire cover for gas stove - Google Patents

Fire cover for gas stove Download PDF

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Publication number
CN112344331A
CN112344331A CN201910720713.8A CN201910720713A CN112344331A CN 112344331 A CN112344331 A CN 112344331A CN 201910720713 A CN201910720713 A CN 201910720713A CN 112344331 A CN112344331 A CN 112344331A
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CN
China
Prior art keywords
gas
fire
ring
fire transfer
fire cover
Prior art date
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Granted
Application number
CN201910720713.8A
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Chinese (zh)
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CN112344331B (en
Inventor
刘晓刚
柯情
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Ningbo Fotile Kitchen Ware Co Ltd
Original Assignee
Ningbo Fotile Kitchen Ware Co Ltd
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Application filed by Ningbo Fotile Kitchen Ware Co Ltd filed Critical Ningbo Fotile Kitchen Ware Co Ltd
Priority to CN201910720713.8A priority Critical patent/CN112344331B/en
Publication of CN112344331A publication Critical patent/CN112344331A/en
Application granted granted Critical
Publication of CN112344331B publication Critical patent/CN112344331B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/84Flame spreading or otherwise shaping
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/62Mixing devices; Mixing tubes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/72Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/74Preventing flame lift-off

Abstract

The invention relates to a fire cover for a gas stove, which comprises a fire cover body, wherein the fire cover body is provided with a mixed gas cavity, and a fire transmission chamber is formed by radially and outwards extending the upper surface of an annular top wall of the fire cover body from an inner annular wall to an outer annular wall towards the center of the fire cover body, and the fire cover is characterized in that: the gas mixing device also comprises a gas hole and an adjusting ring which are arranged on the inner wall surface of the fire transfer chamber and communicated with the gas mixing cavity, wherein the outer wall surface of the adjusting ring is provided with at least one gas outlet, each gas outlet is communicated with the gas outlet of the corresponding gas ring, and the adjusting ring can move in the circumferential direction relative to the gas ring under the action of external force, so that the position of the gas outlet of the gas ring relative to the gas outlet of the adjusting ring is changed, and further the sectional area of an effective gas flow channel of the gas outlet is changed.

Description

Fire cover for gas stove
Technical Field
The invention relates to a household stove burner, in particular to a fire cover for a gas stove.
Background
At present, most of traditional burner fire covers sold in the market are milled through a groove, namely a fire ignition groove is milled through the top of the fire cover body, and the burner fire cover is easy to deform due to the fact that the fire cover body is disconnected at the fire ignition groove, so that the fire ignition effect is influenced. For example, a similar fire transfer structure is disclosed in the chinese patent invention "gas furnace head with fire transfer device and flameout protection function" with patent No. 201220464214.0 (publication No. CN202813375U), wherein an outer ring fire spraying ring is provided with a plurality of outer ring fire spraying holes, and the outer ring fire spraying holes are further provided with an outer ring fire transfer device, the outer ring fire transfer device is composed of a boss arranged on the inner side wall of the outer ring fire spraying ring, outer ring fire transfer holes and outer ring fire transfer grooves arranged on the boss and the outer ring fire spraying ring, the outer ring fire transfer holes are communicated with the outer ring fire transfer grooves, the outer ring fire transfer holes and the outer ring fire transfer grooves are communicated with one outer ring fire spraying hole, so as to realize rapid fire transfer; the fire transfer groove of the fire transfer structure is open, the fire transfer groove is linear, namely the fire transfer groove is exposed on the surface of the outer ring fire cover, the design of the design has a benefit that the secondary air in the fire transfer groove is sufficiently supplemented, the open fire transfer groove can ensure the supplement of the secondary air during the flame combustion in the fire transfer groove, the flame combustion and the fire transfer are facilitated, and the open fire transfer groove has the characteristic of quick fire transfer, but has two disadvantages, the first open fire transfer groove and the open fire transfer groove are easy to cause the blockage of the fire transfer groove, namely soup flowing from the bottom of a pan is easy to flow into the fire transfer groove, the fire transfer performance is influenced after the blockage, and the main reason for the blockage maintenance of the current fire transfer groove is also included; secondly, the open fire transmission groove has high requirements on the air door of the stove, and after the air door is opened to a large extent, too much air can cause too high air speed, so that flame is separated or flame is released during combustion. For this reason, further improvements in the fire transfer slots of burner fire covers are desired.
Therefore, the existing burner fire cover also adopts a hidden fire transfer structure, for example, a Chinese utility model patent with patent number ZL2018206663176.9 (publication number CN208312375U) discloses a gas burner, which comprises a gas mixing chamber, an outer ring fire cover with an annular fire cover body and an inner ring fire cover, wherein the top of the gas mixing chamber is sequentially provided with an inner ring gas mixing chamber and an outer ring gas mixing chamber which are opened upwards from inside to outside, the inner ring fire cover and the outer ring fire cover are respectively covered on the inner ring gas mixing chamber and the outer ring gas mixing chamber, a secondary air loop is arranged between the inner ring gas mixing chamber and the outer ring gas mixing chamber, the side wall of the gas mixing chamber is provided with a secondary air supplement hole communicated with the secondary air loop, the fire cover body is radially provided with a fire transfer channel, and the fire transfer channel is communicated with the corresponding secondary air supplement hole. Supplementary hole through the secondary air supplements the air to passing the fire passageway, thereby promote passing the high-efficient burning of fire flame in the passageway of passing a fire, and then promote and pass fire speed, though this pass fire passageway has solved the air problem of hidden passageway of passing a fire, and do not solve the gas problem in the hidden passageway of passing a fire, because the air supply pressure in different areas is different, pressure is low excessively, then cause hidden passing fire not to have the gas in the passageway easily, and pressure is too fast, then cause the gas fast and the air-free in the hidden passageway of passing a fire easily, the phenomenon that all can cause the point to not catch fire produces. Therefore, further improvements in the flame transfer structure of the existing burners are needed.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a fire cover for a gas stove, which can adapt to different gas source pressures, i.e. can ensure fire transmission performance even under the condition of too low gas source pressure, in view of the above-mentioned current state of the art.
A second technical problem to be solved by the present invention is to provide a fire cover for a gas range, which is advantageous for air supplement to ensure smooth fire transfer, in view of the above-mentioned prior art.
The third technical problem to be solved by the present invention is to provide a fire cover for a gas stove, which can reduce the probability of blocking the ignition part, 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 fire cover for a gas stove, which has an enhanced applicability to the opening degree of an air door, that is, can ensure a fire-transmitting performance even under a condition that the opening degree of the air door is large, in view of the above-mentioned current state of the art.
In order to solve the first technical problem, the technical scheme adopted by the invention is as follows: the fire cover for the gas stove comprises a fire cover body, wherein a gas mixing cavity is formed between an annular top wall of the fire cover body and an inner annular wall and an outer annular wall which vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall, a fire transfer chamber is formed on the upper surface of the annular top wall of the fire cover body and radially extends outwards from the inner annular wall to the outer annular wall towards the center of the fire cover body, an inner opening of the fire transfer chamber is positioned on the inner annular wall, and an outer opening of the fire transfer chamber is positioned on the outer annular wall, and the fire cover is characterized in that: also includes:
the gas hole is provided with at least one gas hole, is formed in the inner wall surface of the fire transfer chamber and is communicated with the gas mixing cavity;
the gas ring is arranged in the fire transfer chamber and is kept in a state of being close to the inner wall surface of the fire transfer chamber, the outer wall surface of the gas ring is provided with at least one gas channel with an air outlet, and the air inlet end of each gas channel is communicated with the corresponding gas hole; and
the adjusting ring is arranged on the inner wall surface of the gas ring and is kept in a state of being close to the inner wall surface of the gas ring, at least one gas outlet is formed in the outer wall surface of the adjusting ring, each gas outlet is communicated with the corresponding gas outlet hole of the gas ring, and the adjusting ring can move in the circumferential direction relative to the gas ring under the action of external force, so that the position of the gas outlet hole of the gas ring relative to the gas outlet hole of the adjusting ring is changed, and the sectional area of an effective gas flow channel of the gas outlet is further changed.
In order to further change the sectional area of the effective airflow channel of the air outlet, the air conditioner preferably further comprises a partition which can rotate in the circumferential direction relative to the adjusting ring and is provided with at least two through holes, so that the position of the partition relative to the air outlet of the adjusting ring is changed. When the partition plate rotates to the air outlet of the adjusting ring along the circumferential direction, an effective airflow channel of a part of the air outlet can be shielded, when the air supply pressure of a user is high, the pressure is high, the airflow is high, the gas concentration in the flame transfer chamber is too high, and the gas is not ignited, at the moment, the adjusting ring can be rotated for a certain angle, the effective airflow area of the air outlet hole of the gas ring is reduced, and at the moment, the state is high-pressure low-overcurrent area; when the air supply pressure of a user home is low, the pressure is low, the air flow is small, the gas concentration in the flame transfer chamber is too low, and the flame transfer chamber is not easy to ignite, the adjusting ring can be rotated to a state that the air outlet of the gas ring is in the maximum effective air flow area, namely, the state is a state that the air outlet is high in low pressure and high in overflowing area, so that the gas concentration in the flame transfer chamber is reasonably controlled to adapt to different air supply pressures.
In order to keep the gas ring and the inner wall surface of the fire transfer chamber in a state of being close to each other, preferably, the gas ring has an inner side opening communicated with the inner side opening of the fire transfer chamber, the upper surface of the top of the outer peripheral wall of the pipe orifice corresponding to the inner side opening has a first limiting member, and the first limiting member acts on the fire transfer chamber to limit the gas ring. The first limiting piece limits the gas ring to rotate relative to the fire chamber.
In order to solve the second technical problem, preferably, the inner peripheral wall of the pipe orifice corresponding to the inner port of the gas ring is provided with a second limiting member, and the second limiting member acts on the adjusting ring to limit a distance that the adjusting ring moves in the circumferential direction relative to the gas ring. In order to prevent the regulating ring from moving in an effective range, the minimum gas quantity required in the fire transfer process of the fire transfer chamber is ensured by the spacing distance, and when the regulating ring rotates relative to the gas ring, the sectional area of an effective gas flow channel of a gas outlet of the regulating ring is small, the gas inlet resistance of the gas entering the gas outlet of the regulating ring from the gas outlet hole of the gas ring can be increased, the heat exchange time of the gas and the regulating ring is prolonged, finally, the gas flow rate of the gas can be effectively reduced, the reduction of the mixing degree of secondary air in the fire transfer chamber due to the fact that the gas flow rate is too fast is avoided, and the fire transfer is not smooth.
In order to shorten the fire transmission distance, preferably, the gas ring has an outer side opening communicated with an outer side opening of the fire transmission chamber, an outer peripheral wall of the pipe orifice corresponding to the outer side opening has a first fire transmission opening for transmitting fire, an outer annular wall of the fire cover body is provided with a flame stabilizing groove communicated with the gas mixing cavity, and the first fire transmission opening is communicated with the flame stabilizing groove. This first biography fire opening communicates with the steady flame groove of fire lid body not only can ensure the biography fire success rate of biography fire room, can also shorten the biography fire distance of biography fire room simultaneously for it is more quick to pass fire.
The adjusting ring is provided with an inner side fire transfer port communicated with an inner side port of the gas ring, the outer peripheral wall of the pipe orifice corresponding to the inner side fire transfer port is provided with a third limiting part acted with the second limiting part, and the adjusting ring is limited to move in the circumferential direction relative to the gas ring at a spacing distance.
Furthermore, the adjusting ring is provided with an inner side fire transfer port communicated with an inner side port of the gas ring, the outer peripheral wall of the pipe orifice corresponding to the inner side fire transfer port is provided with a third limiting part acted with the second limiting part, and the third limiting part jointly limit the interval distance of the adjusting ring moving in the circumferential direction relative to the gas ring. The second limiting member and the third limiting member may be selected from a simple point of view, and may be a protrusion and a groove, wherein a spacing distance is required between the second limiting member and the third limiting member to allow the gas ring to move in the circumferential direction.
In order to realize that the fire of the fire transfer chamber is transferred from the inner ring fire cover to the fire cover body, preferably, the adjusting ring is provided with an outer fire transfer port communicated with an outer side port of the gas ring, the outer peripheral wall of the pipe orifice corresponding to the outer fire transfer port is provided with a second fire transfer opening for transferring fire, and the second fire transfer opening is communicated with the first fire transfer opening.
In order to prevent the second fire transfer opening from completely sealing the first fire transfer opening to cause fire transfer obstruction when the adjusting ring can move relative to the gas ring in the circumferential direction under the action of external force, preferably, the opening aperture of the second fire transfer opening is larger than that of the first fire transfer opening.
In order to realize the rotation of the separating element relative to the adjusting ring, preferably, the inner peripheral wall of the pipe orifice corresponding to the inner fire transmitting opening of the adjusting ring is provided with a sliding groove for the separating element to rotate in the circumferential direction, and the separating element is provided with a limiting foot capable of sliding in the sliding groove.
In order to solve the third technical problem, preferably, the gas outlet of each gas ring and the gas outlet of each adjusting ring are both located at the upper part of the fire transfer chamber. So as to avoid the overflow liquid from blocking the air outlet of the gas ring and the air outlet of the adjusting ring.
Compared with the prior art, the invention has the advantages that the fire transfer chamber is a hidden fire transfer channel which is hidden in the fire cover body and is relatively isolated from the air mixing chamber, so that the air door can be opened to be large, the primary air quantity entering the gas hole and the fire transfer chamber is increased, and the speed is increased, so that more secondary air can be sucked into the fire transfer chamber, meanwhile, the fire transfer chamber is hidden in the fire cover body, liquid overflowing can be effectively prevented from entering the fire transfer chamber, the fire transfer of the fire transfer chamber hidden in the fire cover body can be ensured, flame combustion in the fire transfer chamber can be ensured, and the blockage of soup can be effectively prevented; in addition, the fire transfer chamber is internally provided with a gas ring with an air outlet hole and an adjusting ring with an air outlet, when the adjusting ring rotates relative to the gas ring in the circumferential direction, the sectional area of an effective airflow channel of the air outlet on the adjusting ring can be changed, so that different air source pressures can be adapted, and the phenomenon that ignition is not performed due to low air source pressure is avoided.
Drawings
FIG. 1 is a schematic view of a fire lid body disposed on a base according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view at an angle of FIG. 1;
FIG. 3 is a sectional view of the partitioning member in a state of rotating in the circumferential direction with respect to the regulating ring and blocking a part of the air outlet in the embodiment of the present invention;
FIG. 4 is a cross-sectional view of the adjustment ring of FIG. 3 in a state rotated in a rotational direction with respect to the gas ring and blocking a portion of the gas outlet;
FIG. 5 is a schematic view of a further angle shown in FIG. 1;
FIG. 6 is a schematic structural view of a fire lid body according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a gas ring according to an embodiment of the present invention;
FIG. 8 is a schematic view of the structure of FIG. 7 at another angle;
FIG. 9 is a schematic structural diagram of an adjustment ring according to an embodiment of the present invention;
FIG. 10 is a schematic view of another angle of the adjustment ring according to the embodiment of the present invention;
fig. 11 is a schematic structural view of a separator in 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 FIGS. 1 to 11, the preferred embodiment of the present invention is shown. The fire cover for the gas stove in the embodiment comprises a fire cover body 1, a gas mixing cavity 14 is formed between an annular top wall 11 of the fire cover body 1 and an inner annular wall 12 and an outer annular wall 13 which vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall 11, the upper surface of the annular top wall 11 of the fire cap body 1 extends outwards from the inner annular wall 12 to the outer annular wall 13 in the radial direction towards the center of the fire cap body 1 to form a fire transfer chamber 2, an inner opening 21 of the fire transfer chamber 2 is positioned on the inner annular wall 12, an outer opening 22 of the fire transfer chamber is positioned on the outer annular wall 13, the fire transfer chamber also comprises an inner wall surface arranged on the fire transfer chamber 2, at least one gas hole 23 communicated with the gas mixing cavity 14, a gas ring 3 arranged in the fire transfer chamber 2 and kept in a state of being adjacent to the inner wall surface of the fire transfer chamber 2, the outer wall surface of the gas ring 3 is provided with at least one gas channel 30 with an air outlet hole 31, and the air inlet end of each gas channel 30 is communicated with the corresponding gas hole 23; and the adjusting ring 4 is arranged on the inner wall surface of the gas ring 3 and is kept in a state of being close to the inner wall surface of the gas ring 3, the outer wall surface of the adjusting ring 4 is provided with at least one gas outlet 41, each gas outlet 41 is communicated with the corresponding gas outlet 31 of the gas ring 3, and the adjusting ring 4 can move in the circumferential direction relative to the gas ring 3 under the action of external force, so that the position of the gas outlet 31 of the gas ring 3 relative to the gas outlet 41 of the adjusting ring 4 is changed, and the sectional area of an effective airflow channel of the gas outlet 41 is further changed. Because the fire transmission chamber 2 is a hidden fire transmission channel which is hidden in the fire cover body 1 and is relatively isolated from the air mixing chamber, the air door can be opened to be large, so that the primary air quantity entering the gas hole and the fire transmission chamber is increased, the speed is increased, more secondary air can be sucked into the fire transmission chamber of the fire transmission chamber 2, meanwhile, the fire transmission chamber 2 is hidden in the fire cover body 1, liquid overflowing can be effectively prevented from entering the fire transmission chamber, fire transmission of the fire transmission chamber hidden in the fire cover body 1 can be ensured, flame combustion in the fire transmission chamber 2 can be ensured, and blockage of soup can be effectively prevented; in addition, be provided with the gas circle 3 that has venthole 31 and the adjusting ring 4 that has gas outlet 41 in passing fire the room 2, when adjusting ring 4 and rotating in the circumference to gas circle 3 relatively, can change the effective airflow channel's of gas outlet 41 sectional area on adjusting ring 4 to can adapt to different air supply pressure, avoid appearing the phenomenon of not lighting a fire because of air supply pressure is low.
In order to keep the gas ring 3 and the inner wall surface of the fire transfer chamber 2 in a state of being closely adjacent to each other, the gas ring 3 has an inner side port 32 communicated with the inner side opening 21 of the fire transfer chamber 2, the upper surface of the top of the pipe orifice outer peripheral wall corresponding to the inner side port 32 is provided with a first limiting member 321, the first limiting member 321 acts on the fire transfer chamber 2 to limit the gas ring 3, and the first limiting member 321 limits the rotation of the gas ring 3 relative to the fire transfer chamber 2. In this embodiment, the first limiting member 321 is a first limiting protrusion, and in order to further change the sectional area of the effective airflow channel of the air outlet 41, the first limiting member further includes a separating member 5 which can rotate in the circumferential direction relative to the adjusting ring 4 and is provided with at least two through holes 51, so as to change the position of the separating member 5 relative to the air outlet 41 of the adjusting ring 4. In the embodiment, the partition 5 is in a flat plate shape, when the partition 5 in the flat plate shape rotates to the air outlet 41 of the adjusting ring 4 along the circumferential direction, an effective air flow channel of a part of the air outlet 41 can be shielded, when the air supply pressure of a user is high, the pressure is high, the air flow is large, the air concentration in the ignition chamber 2 is too high, and the ignition is not started, at the moment, the adjusting ring 4 can be rotated for a certain angle, the effective air flow area of the air outlet hole 31 of the gas ring 3 is reduced, and at the moment, the state is a high-pressure low-overflowing area; when the air supply pressure of a user home is low, the pressure is low, the air flow is small, the air concentration in the fire transfer chamber 2 is too low, and the fire cannot be easily ignited, at the moment, the adjusting ring 4 can be rotated to be in the state of the maximum effective air flow area with the air outlet hole 31 of the gas ring 3, namely, the state is that the air pressure is high and the air flow area is high, and in a word, the air concentration in the fire transfer chamber 2 is reasonably controlled to adapt to different air supply pressures.
In addition, the inner peripheral wall of the pipe orifice corresponding to the inner port 32 of the gas ring 3 is further provided with a second limiting member 322, and the second limiting member 322 acts on the adjusting ring 4 to limit the interval distance of the adjusting ring 4 moving in the circumferential direction relative to the gas ring 3. The second locating part 322 of this embodiment is the spacing recess of second, move in effectual within range in order to prevent regulating ring 4, this interval distance is for ensureing to pass fiery room 2 at the required minimum gas volume of biography fiery in-process, and rotate and make the sectional area of the effective air current passageway of the gas outlet 41 of regulating ring 4 just hour when regulating ring 4 is relative to gas ring 3, can also increase the gas and get into the air inlet resistance of the gas outlet 41 of regulating ring 4 from gas ring 3's venthole 31, increase the heat transfer time of gas and regulating ring 4, finally can also reduce the air current velocity of gas effectively, in order to avoid gas velocity of flow too fast and cause and pass the degree of mixing decline of the interior secondary air of fiery room 2, cause and pass the fire unsmooth. Correspondingly, the adjusting ring 4 is provided with an inner fire transfer port 42 communicated with the inner port 32 of the gas ring 3, the outer peripheral wall of the pipe orifice corresponding to the inner fire transfer port 42 is provided with a third limiting part 421 acting with the second limiting groove, the third limiting part 421 is preferably a third limiting part for matching with the second limiting groove, and the third limiting part is smaller than the second limiting groove, so that the interval between the third limiting part and the second limiting groove jointly defines the interval distance of the adjusting ring 4 moving in the circumferential direction relative to the gas ring 3. The gas ring 3 is provided with an outer side port 33 communicated with the outer side opening 22 of the fire transfer chamber 2, the outer peripheral wall of a pipe orifice corresponding to the outer side port 33 is provided with a first fire transfer opening 331 for transferring fire, the outer annular wall 13 of the fire cover body 1 is provided with a flame stabilizing groove 131 communicated with the gas mixing cavity 14, the adjusting ring 4 is provided with an outer side fire transfer opening 43 communicated with the outer side port 33 of the gas ring 3, the outer peripheral wall of the pipe orifice corresponding to the outer side fire transfer opening 43 is provided with a second fire transfer opening 431 for transferring fire, the second fire transfer opening 431 is communicated with the first fire transfer opening 331, therefore, the first fire transfer opening 331 and the second fire transfer opening 431 are both communicated with the flame stabilizing groove 131, the first fire transfer opening 331 is communicated with the flame stabilizing groove 131 of the fire cover body 1, the fire transfer success rate of the fire transfer chamber 2 can be ensured, and the fire transfer distance of the fire transfer chamber 2 can be shortened, so that the fire is. In order to prevent the second fire transfer opening 431 from completely sealing the first fire transfer opening 331 to cause fire transfer obstruction when the adjusting ring 4 can move in the circumferential direction relative to the gas ring 3 under the action of external force, the opening diameter of the second fire transfer opening 431 is larger than that of the first fire transfer opening 331. Finally, in order to realize the rotation of the separating component 5 relative to the adjusting ring 4, the inner peripheral wall of the pipe orifice corresponding to the inner fire transmission opening 42 of the adjusting ring 4 is provided with a sliding groove 422 for the separating component 5 to rotate in the circumferential direction, and the separating component 5 is provided with a limiting foot 52 which can slide in the sliding groove 422. In order to avoid the overflow from blocking the gas outlet holes 31 of the gas rings 3 and the gas outlet 41 of the regulating ring 4, the gas outlet hole 31 of each gas ring 3 and the gas outlet 41 of each regulating ring 4 are preferably located at the upper part of the transfer chamber 2.
As described above, the fire transfer path of the primary air, the gas, the mixed gas after mixing and the secondary air in the fire transfer chamber 2 is as follows, the mixed gas formed by the gas and the primary air enters the gas channel 30 of the gas ring 3 through the gas hole 23 and flows out to the gas outlet 41 of the adjusting ring 4 through the gas outlet hole 31 of the gas channel 30, because the gas outlet hole 31 of each gas ring 3 and the gas outlet 41 of each adjusting ring 4 are both positioned at the upper part of the fire transfer chamber 2, on one hand, the path of the primary air and the gas can be extended, thereby effectively reducing the air flow velocity when the mixed gas flows out from the adjusting ring 4, making the mixed gas in the adjusting ring 4 not easily separate from flame during combustion, and further making the ignition of the fire cover body 1 more stable; in addition, the blockage of the primary air and the fuel gas caused by the overflowing liquid can be reduced, wherein in order to make up for the problem that the fire transfer chamber 2 serving as a hidden fire transfer structure is insufficient in air, the flat-plate-shaped separating piece 5 separates the adjusting ring 4 into two cavities, a first cavity 50 formed by surrounding the air outlet hole 31 of the fuel gas ring 3 and the air outlet 41 of the adjusting ring 4 and a second cavity 60 formed by surrounding the air outlet hole 31 of the fuel gas ring 3 and the air outlet 41 of the adjusting ring 4 are not included, and the fuel gas is combusted in the first cavity 50 and continuously consumes the air to generate suction force for the secondary air of the second cavity, so that the secondary air of the second cavity 60 can be continuously supplemented into the first cavity; when the air supply pressure of the user is high, the pressure is high, the air flow is high, the adjusting ring 4 can be rotated for a certain angle, and the effective air flow area of the air outlet hole 31 of the gas ring 3 is reduced; when the air supply pressure of the user home is low, the pressure is low, the air flow is small, and at the moment, the adjusting ring 4 can be rotated to be in the state of the maximum effective air flow area with the air outlet hole 31 of the gas ring 3.

Claims (10)

1. A fire cover for a gas stove comprises a fire cover body (1), wherein a gas mixing cavity (14) is formed between an annular top wall (11) of the fire cover body (1) and an inner annular wall (12) and an outer annular wall (13) which vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall (11), a fire transfer chamber (2) is formed by radially and outwards extending the upper surface of the annular top wall (11) of the fire cover body (1) from the inner annular wall (12) to the outer annular wall (13) towards the center of the fire cover body (1), an inner opening (21) of the fire transfer chamber (2) is located in the inner annular wall (12), an outer opening (22) of the fire transfer chamber (2) is located in the outer annular wall (13), and the fire cover is characterized in that: also includes:
the gas hole (23) is provided with at least one gas hole, is formed in the inner wall surface of the fire transfer chamber (2), and is communicated with the gas mixing cavity (14);
the gas ring (3) is arranged in the fire transfer chamber (2) and is kept in a state of being close to the inner wall surface of the fire transfer chamber (2), the outer wall surface of the gas ring (3) is provided with at least one gas channel (30) with a gas outlet hole (31), and the gas inlet end of each gas channel (30) is communicated with the corresponding gas hole (23); and
the adjusting ring (4) is arranged on the inner wall surface of the gas ring (3) and is kept in a state of being close to the inner wall surface of the gas ring (3), at least one gas outlet (41) is formed in the outer wall surface of the adjusting ring (4), each gas outlet (41) is communicated with the corresponding gas outlet hole (31) of the gas ring (3), and the adjusting ring (4) can move in the circumferential direction relative to the gas ring (3) under the action of external force, so that the position of the gas outlet hole (31) of the gas ring (3) relative to the gas outlet (41) of the adjusting ring (4) is changed, and the sectional area of an effective airflow channel of the gas outlet (41) is further changed.
2. Fire cover for gas cookers according to claim 1, characterized in that: the gas outlet adjusting device is characterized by further comprising a separating piece (5) which can rotate in the circumferential direction relative to the adjusting ring (4) and is provided with at least two through holes (51), so that the position of the separating piece (5) relative to the gas outlet (41) of the adjusting ring (4) is changed.
3. Fire cover for gas cookers according to claim 2, characterized in that: the gas ring (3) is provided with an inner side opening (32) communicated with the inner side opening (21) of the fire transfer chamber (2), the upper surface of the top of the outer peripheral wall of the pipe orifice corresponding to the inner side opening (32) is provided with a first limiting part (321), and the first limiting part (321) acts on the fire transfer chamber (2) to limit the gas ring (3).
4. Fire cover for gas cookers according to claim 3, characterized in that: the inner peripheral wall of the pipe orifice corresponding to the inner side opening (32) of the gas ring (3) is provided with a second limiting piece (322), the second limiting piece (322) acts on the adjusting ring (4) to limit the interval distance of the adjusting ring (4) moving in the circumferential direction relative to the gas ring (3).
5. Fire cover for gas cookers according to claim 4, characterized in that: the gas ring (3) is provided with an outer side opening (33) communicated with the outer side opening (22) of the fire transfer chamber (2), a first fire transfer opening (331) used for transferring fire is formed in the outer peripheral wall of a pipe orifice corresponding to the outer side opening (33), a flame stabilizing groove (131) communicated with the gas mixing cavity (14) is formed in the outer annular wall (13) of the fire cover body (1), and the first fire transfer opening (331) is communicated with the flame stabilizing groove (131).
6. Fire cover for gas cookers according to claim 5, characterized in that: the adjusting ring (4) is provided with an inner side fire transfer port (42) communicated with an inner side port (32) of the gas ring (3), a pipe orifice peripheral wall corresponding to the inner side fire transfer port (42) is provided with a third limiting part (421) acted with the second limiting part (322), and the adjusting ring (4) is limited to the interval distance of circumferential movement of the adjusting ring (4) relative to the gas ring (3).
7. Fire cover for gas cookers according to claim 6, wherein: the adjusting ring (4) is provided with an outer fire transfer port (43) communicated with an outer port (33) of the gas ring (3), a second fire transfer opening (431) used for transferring fire is arranged on the outer peripheral wall of a pipe orifice corresponding to the outer fire transfer port (43), and the second fire transfer opening (431) is communicated with the first fire transfer opening (331).
8. Fire cover for gas cookers according to claim 7, wherein: the opening aperture of the second fire transfer opening (431) is larger than that of the first fire transfer opening (331).
9. Fire cover for gas cookers according to claim 7 or 8, characterized in that: the mouth of pipe internal perisporium that adjusts the inboard fire transmission mouth (42) of circle (4) and correspond has the confession separator (5) spout (422) that rotate in circumference, separator (5) have can in spacing foot (52) that slide in spout (422).
10. Fire cover for gas cookers according to claim 9, wherein: and the gas outlet hole (31) of each gas ring (3) and the gas outlet (41) of each adjusting ring (4) are positioned at the upper part of the fire transfer chamber (2).
CN201910720713.8A 2019-08-06 2019-08-06 Fire cover for gas stove Active CN112344331B (en)

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