CN111256135B

CN111256135B - Burner for gas stove

Info

Publication number: CN111256135B
Application number: CN201811460042.8A
Authority: CN
Inventors: 杨杰
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2022-01-21
Anticipated expiration: 2038-11-30
Also published as: CN111256135A

Abstract

The invention relates to a burner for a gas stove, which comprises a base, an inner ring fire cover forming a central gas mixing chamber with the base, and an outer ring fire cover forming an outer ring gas mixing chamber with the base, wherein a gas supplementing chamber is formed between the central gas mixing chamber and the outer ring gas mixing chamber, and the base is also provided with a secondary gas supplementing channel communicating the gas supplementing chamber with the outside, and the burner is characterized in that: the inner ring fire cover is provided with a fire outlet and/or a fire protection hole communicated with the central gas mixing chamber on the wall surface adjacent to the gas supplementing chamber along the circumferential direction, and the secondary gas supplementing channel is internally provided with a lighting device for collecting light generated by flames formed by the fire outlet and/or the fire protection hole, compared with the prior art, the secondary gas supplementing chamber has the advantages that: the lighting device can finally control the electromagnetic valve of the gas stove to be closed, cut off the gas passage, reduce the thermocouple or induction needle of the existing burner, make the kitchen range more concise and beautiful on the whole; meanwhile, the secondary air supply channel of the lighting device can keep the original integral appearance of the burner attractive.

Description

Burner for gas stove

Technical Field

The invention relates to the technical field of kitchen ware, in particular to a burner with a flameout protection structure for a gas stove.

Background

The flame-out protection systems of the stove products on the market are mainly divided into two types, namely an ion flame-out protection system and a thermocouple flame-out protection system, but both have certain limitations, for example, the induction range to flames is smaller, and the blockage of individual fire holes is easy to misjudge and flame-out, so that for this reason, for example, the applicant provides a burner of a gas stove, which is a Chinese utility model patent application with the patent number ZL201520935722.6 (with the granted publication number of CN205174363U), and discloses a burner comprising a thermocouple, an ignition needle, an independent inner ring channel, an independent outer ring channel, an outer ring fire cover positioned above the outlet of the independent outer ring channel and an inner ring fire cover positioned above the outlet of the independent inner ring channel, and the burner is characterized in that the thermoelectric gnat and the ignition needle are both arranged outside the outer ring fire cover, the ignition needle ignites by means of the outer ring channel flames, the thermocouple protects the flames by means of the outer ring channel, and maintains the normal use of the thermoelectric flame-out protection device, the thermocouple is moved outwards to avoid the reduction of the sensitivity of the thermocouple caused by the slow heat dissipation of the inner ring fire cover, and the flameout protection force of the thermocouple is improved. Yet another ion extinction protection system is a Chinese patent application CN201810080868.5 (application publication No. CN108061315A) of ion flame-sensing extinction protection device of gas stove, which comprises a controller, a battery, a burner, a thermoelectric beam, a self-absorption electromagnetic valve and a gas pipeline, wherein the self-absorption electromagnetic valve is installed on the gas pipeline and connected with the controller lead, the thermoelectric beam is formed by connecting a plurality of thermoelectric heads and tails in series with an outer sleeve metal shell, the thermoelectric couples are separated by high temperature resistant insulating layers and placed in the metal shell, the thermoelectric beam is installed beside a burner fire hole and connected with the controller lead, the controller is connected with the battery lead, after adopting the above structure, because the battery is installed and connected with the controller, when the stove starts to work and ignite, the electromagnetism is turned on by the energy of the battery, and after the flame ignites to normally work, the self-priming electromagnetic valve keeps the required working state by using the electric quantity generated by the heat energy of the thermocouple beam when the thermocouple beam meets flame, so that the stove does not need to be powered by a battery during normal working, the electric quantity of the battery is saved, but the flameout protection structure has higher power consumption and higher battery replacement frequency.

Disclosure of Invention

A first technical problem to be solved by the present invention is to provide a burner for gas cookers with another extinguishing protection device, in view of the above-mentioned state of the art.

The technical scheme adopted by the invention for solving the technical problems is as follows: this a combustor for gas-cooker including:

a base;

the inner ring fire cover is arranged on the base, and a central air mixing chamber is formed between the inner ring fire cover and the base;

the outer ring fire cover is also arranged on the base, is positioned at the periphery of the inner ring fire cover, and forms an outer ring gas mixing chamber with the base; an air supplement cavity is formed between the central air mixing chamber and the outer ring air mixing chamber; a plurality of radial secondary air supply channels for communicating the air supply cavity with the outside are arranged on the base at intervals along the circumferential direction;

the method is characterized in that: the inner ring fire cover is provided with a fire outlet and/or a fire protection hole communicated with the central gas mixing chamber along the circumferential direction on the wall surface adjacent to the gas supplementing chamber, and the secondary gas supplementing channel is internally provided with a lighting device which is independent of the outer ring gas mixing chamber and is used for collecting light generated by flames formed by the fire outlet and/or the fire protection hole.

Further, the lighting device comprises:

the lighting channel comprises a lighting port facing the fire outlet and/or the fire protection hole;

the light reflecting piece is arranged in the lighting channel and is used for reflecting light generated by flames formed by the fire outlet holes and/or the fire protection holes;

the photosensitive assembly is arranged below the base and used for receiving the optical signal reflected by the light reflecting piece; and

and the transmission channel is formed in the base and positioned between the lighting channel and the photosensitive component so as to be used for transmitting light to the photosensitive component.

Because the daylight opening of the daylight channel is right opposite to the inner ring flame formed by the inner ring fire outlet hole, if the inner ring fire outlet hole forms the inner ring flame for the top surface, the daylight opening is right opposite to the fire protection hole corresponding to the thermocouple, thereby ensuring that the inner ring flame or the light emitted by the fire protection hole can be transmitted to the reflecting piece in the largest range and then directly reflected to the photosensitive component such as the photosensitive tube.

Preferably, in order to implement that the light reflecting member adopts mirror reflection, the lighting channel includes a horizontal portion and a vertical portion, the horizontal portion is a part of the bottom of the outer ring air mixing chamber and has the lighting opening, and the light reflecting member is located at a bending position of the horizontal portion and the vertical portion.

Further, in order to conduct the light reflected by the reflector to the transmission passage, the vertical portion has a light-conducting port that conducts the light reflected by the reflector to the transmission passage.

In order to more rapidly transmit the light emitted from the inner ring flame or the fire-protecting hole to the reflector at the fastest speed, the transverse portion is gradually inclined downwards from the inside to the outside.

In order to prevent the lighting opening from being blocked by overflowing liquid or other sundries, the lighting opening of the transverse part is provided with an antifouling structure.

In order not to affect the collection of the inner ring flame by the lighting opening or the light emitted by the fire protection hole, the antifouling structure is preferably a metal mesh or a convex lens. The benefit of the metal mesh over the convex lens is that it provides less obstruction to light passing through.

Further, in order to protect the photosensitive tube of the photosensitive assembly, the photosensitive assembly comprises:

a photosensitive tube;

a housing for accommodating the photosensitive tube, the housing having a through hole for exposing the positive and negative electrodes of the photosensitive tube;

the first cover body is covered on the shell, a central hole for exposing the photosensitive tube is formed in the central position of the first cover body, a support plate extending downwards is further arranged at the position, corresponding to the through hole, of the outer edge of the first cover body, and the support plate extends into the through hole and is located between the positive electrode and the negative electrode of the photosensitive tube; and

the second cover body is detachably connected to the central hole of the first cover body, edges enabling the second cover body to slide relative to the length direction of the shell body extend downwards from two sides of the second cover body, and the second cover body is further provided with an opening communicated with the transmission channel.

Thereby make the photosensitive tube keep away from the higher burning position of temperature for the operating temperature of photosensitive tube is unlikely to too high, has guaranteed the performance and the life-span of photosensitive tube, has preserved the wholeness and the aesthetic property of cooking utensils outward appearance moreover.

In order to enable the photosensitive tube to be vertically arranged in the shell, a vertical cylinder body extends upwards from the hole wall of the opening, and the top end of the cylinder body is communicated with the transmission channel.

In order to enhance the better connectivity between the transmission channel and the cylinder of the photosensitive assembly, the top end of the cylinder is provided with a convex edge for supporting one circle or a half circle of the periphery of the transmission channel.

Compared with the prior art, the invention has the advantages that: because the burner is burning, the flame contains a certain amount of light, therefore, the secondary air supply channel is internally provided with a lighting device which is independent of the outer ring air mixing chamber and is used for collecting the light generated by the flame formed by the fire hole and/or the fire protection hole, so as to finally control the electromagnetic valve of the gas stove to be closed and cut off the gas passage, reduce the thermocouple or the induction needle of the existing burner and ensure that the whole stove is more concise and beautiful to a certain degree; meanwhile, the secondary air supply channel of the lighting device can keep the original integral appearance of the burner attractive.

Drawings

FIG. 1 is a schematic structural view of example 1 of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 with an angle of the outer fire cover omitted;

FIG. 3 is a schematic view of the structure of FIG. 1 with the outer fire cover omitted from another angle;

FIG. 4 is a cross-sectional view of FIG. 2;

FIG. 5 is a schematic view showing the structure of a photosensitive element in example 1 of the present invention;

FIG. 6 is an exploded view of FIG. 5;

FIG. 7 is a schematic view of an angle structure according to embodiment 2 of the present invention;

fig. 8 is a schematic structural view of another angle in embodiment 2 of the present invention.

Detailed Description

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

Example 1

As shown in FIGS. 1 to 6, the preferred embodiment of the present invention is shown. The burner for the gas stove in the embodiment comprises a base 1, which is arranged on the base 1, an inner ring fire cover 2 which forms a central air mixing chamber 21 with the base 1, and is also arranged on the base 1, and is positioned at the periphery of the inner ring fire cover 2, and an outer ring fire cover 3 which forms an outer ring air mixing chamber 31 with the base 1, an air supply chamber 30 is formed between the central air mixing chamber 21 and the outer ring air mixing chamber 31, a plurality of radial secondary air supply channels 4 which are used for communicating the air supply chamber 30 with the outside are also arranged on the base 1 along the circumferential direction at intervals, fire outlets 211 which are communicated with the central air mixing chamber 21 are arranged on the wall surface of the inner ring fire cover 2 adjacent to the air supply chamber 30 along the circumferential direction, and lighting devices 5 which are used for collecting light generated by flames formed by the fire outlets 211 and/or the fire keeping holes 212 are arranged in the secondary air supply channels 4. Because the burner is burning, the flame contains a certain amount of light, for this reason, the secondary air supplement channel 4 is provided with the lighting device 5 which is independent of the outer ring air mixing chamber 31 and is used for collecting the light generated by the flame formed by the fire hole 211 and/or the fire protection hole 212, so as to finally control the electromagnetic valve of the gas stove to close and cut off the gas passage, reduce the thermocouple or the induction needle of the existing burner, make the cooker more concise and beautiful in a certain degree, meanwhile, the lighting device 5 is arranged in the secondary air supplement channel 4, and can keep the aesthetic property of the original integral appearance of the burner, and the embodiment takes the lighting device 5 which collects the light generated by the flame of the fire hole 211 as an example.

Specifically, the lighting device 5 includes a lighting channel 51 having a lighting port 5111 facing the fire hole 211, is disposed in the lighting channel 51, a reflecting member 52 for reflecting light generated from flames formed from the fire holes 211 is provided under the base 1, a photosensitive element 53 for receiving the light signal reflected by the light reflecting member 52, and a transmission channel 54 formed in the base 1 between the light-collecting channel 51 and the photosensitive element 53, for transmitting light to the photosensitive element 53, since the lighting ports 5111 of the lighting passage 51 are opposite to the inner ring flames formed by the inner ring fire outlet holes 211, thereby ensuring that the light emitted from the inner flame or the fire-protecting holes 212 can be maximally transmitted to the reflector 52, and then directly reflected to the photosensitive elements 53 such as the photosensitive tubes 531, since the light reflecting member 52 employs specular reflection, the light loss is small, and the intensity of the inner ring light received by the light sensitive tube 531 is strong. The basis that this daylighting device 5 judges is exactly the inner ring, and does not participate in flame-out protection system when the state of outer loop, because the cooking utensils are in the in-process of normal use, the inner ring all has the fire generally, but the outer loop can be in flame-out state, and this embodiment mainly guarantees through following several points that the signal that photosensitive assembly 53 gathered is originated from the inner ring, but not the outer loop. Firstly, the daylight opening 5111 of the daylight channel 51 faces the inner ring flame, so that ultraviolet rays emitted by the inner ring flame at the position can be smoothly transmitted to the light reflecting part 52 such as a light reflecting plate, and then directly reflected to the photosensitive component 53 through the transmission channel 54, and the light loss reflected by the light reflecting plate is very small, so that the light intensity of the inner ring received by the photosensitive tube 531 in the photosensitive component 53 is relatively strong; the lighting channel 51 is positioned below the outer ring gas mixing chamber 31 and is independent of the outer ring gas mixing chamber 31, because outer ring flames are generated by the fire holes of the outer ring fire cover 3 in an inclined upward manner and light generated by the flames is emitted to the periphery from the surface of the flames, light emitted by the outer ring flames towards the direction of the photosensitive tube 531 below the outer ring flames is much less than that emitted by the outer ring flames in other directions, and meanwhile, light generated by the flames is little, so that the downward transmitted light intensity is weaker; thirdly, before reaching the photosensitive element 53, the light generated by the outer ring flame needs to pass through the outer ring air mixing chamber 31, the liquid containing disc, the base 1 and the photosensitive element 53, is weakened layer by layer, and finally reaches the photosensitive tube 531 of the photosensitive element 53, and is very weak.

In addition, in order to realize the mirror reflection of the reflector 52 such as a reflector, the light collecting channel 51 includes a transverse portion 511 and a vertical portion 512, the transverse portion 511 is a part of the bottom of the outer ring air mixing chamber 31 and has a light collecting opening 5111, the reflector 52 is located at the bending position of the transverse portion 511 and the vertical portion 512, the vertical portion 512 has a light transmitting opening 5121 for transmitting the light reflected by the reflector 52 to the transmission channel 54, so as to transmit the light reflected by the reflector 52 to the transmission channel 54, in order to transmit the light emitted by the inner ring flame to the reflector 52 at the fastest speed, preferably, the transverse portion 511 is inclined downwards from inside to outside gradually, in order not to affect the light collecting opening 5111 to collect the light emitted by the inner ring flame, the anti-fouling structure 7 of the present embodiment is a metal mesh, in order to protect the photosensitive tube 531 of the photosensitive assembly 53, the photosensitive assembly 53 includes a photosensitive tube 531 and a housing 532 for accommodating the photosensitive tube 531, the casing 532 has a through hole 5321 for exposing the positive and negative electrodes of the photosensitive tube 531, a first cover 533 covering the casing 532, the first cover 533 has a central hole 5331 for exposing the photosensitive tube 531 at the central position of the first cover 533, the outer edge of the first cover 533 corresponding to the through hole 5321 also has a support plate 5332 extending downwards, the support plate 5332 extends into the through hole 5321 and is located between the positive and negative electrodes of the photosensitive tube 531 so as to fix the photosensitive tube 531, and a second cover 534 detachably connected to the central hole 5331 of the first cover 533, two sides of the second cover 534 extend downwards to form an edge 5341 for allowing the second cover 534 to slide in the length direction of the casing 532, and the second cover 534 also has an opening 5342 communicated with the transmission channel 54, so that the photosensitive tube 531 is far away from the combustion part with higher temperature, the working temperature of the photosensitive tube 531 is not too high, and the performance and the service life of the photosensitive tube 531 are ensured, and the integrity and the aesthetic property of the appearance of the cooker are preserved. Finally, in order to make the photosensitive tube 531 vertically disposed in the housing 532, the hole wall of the opening 5342 extends upward to form a vertical cylinder 5343, the top end of the cylinder 5343 is communicated with the transmission channel 54, wherein the top end of the cylinder 5343 further has a flange 5344 for supporting a half-circle of the periphery of the transmission channel 54, so as to enhance the better connectivity between the transmission channel 54 and the cylinder 5343 of the photosensitive assembly 53,

the lighting device 5 of the present embodiment, i.e., the photoelectric extinction protection device, operates according to the following principle: when gas is burnt, a certain amount of light is contained in flame, the light rays are continuously radiated to the periphery, a sensor which is used for detecting light by using the photosensitive tube 531 which is particularly sensitive to the light is used, two electrodes of the photosensitive tube 531 are connected with a power supply, the light emitted by the flame is irradiated on the photosensitive tube 531 to be excited and conducted, an electromagnetic valve on a gas channel is kept in an open state through an electronic control circuit, a signal lamp is used for indicating the flame to be normally burnt, after the flame is extinguished, the photosensitive tube 531 is stopped, the electromagnetic valve is closed, a gas passage is cut off, and the signal lamp indicates the flame to be extinguished or gives an alarm along with sound.

Example 2

The structure is basically the same as that of the embodiment 1, and the only difference is that: the fire hole of the inner ring fire cover 2 is vertical upward, the lighting device 5 collects light from the inner ring fire cover 2, the fire protection hole 212 is arranged on the wall surface adjacent to the air supplement cavity 30, and the lighting port 5111 of the transverse part 511 is also provided with an antifouling structure 7, such as a convex lens, so as to prevent the lighting port 5111 from being blocked by overflowing liquid or other impurities, as shown in fig. 7 and 8.

Claims

1. A burner for a gas range, comprising:

a base (1);

the inner ring fire cover (2) is arranged on the base (1), and a central air mixing chamber (21) is formed between the inner ring fire cover and the base (1);

the outer ring fire cover (3) is also arranged on the base (1), is positioned at the periphery of the inner ring fire cover (2), and forms an outer ring gas mixing chamber (31) with the base (1); an air supplement cavity (30) is formed between the central air mixing chamber (21) and the outer ring air mixing chamber (31); a plurality of radial secondary air supplementing channels (4) for communicating the air supplementing cavity (30) with the outside are arranged on the base (1) at intervals along the circumferential direction;

the method is characterized in that: the inner ring fire cover (2) is provided with a fire outlet hole (211) and/or a fire protection hole (212) communicated with the central air mixing chamber (21) along the circumferential direction on the wall surface adjacent to the air supply chamber (30), a lighting device (5) for collecting light generated by flame formed by the fire outlet hole (211) and/or the fire protection hole (212) is arranged in the secondary air supply channel (4), the lighting device (5) controls an electromagnetic valve of the gas stove to close and cut off a gas passage according to a light signal,

comprises the following steps:

a lighting channel (51) comprising a lighting port (5111) facing the fire outlet (211) and/or the fire protection hole (212);

a reflector (52) arranged in the lighting channel (51) and used for reflecting light generated by flames formed by the fire outlet holes (211) and/or the fire protection holes (212);

a photosensitive element (53) disposed below the base (1) for receiving the light signal reflected by the light reflecting member (52); and

a transmission channel (54) formed in the base (1) and located between the light collection channel (51) and the photosensitive assembly (53) for transmitting light to the photosensitive assembly (53).

2. Burner for gas cooktops according to claim 1, characterized in that: the lighting channel (51) comprises a transverse part (511) and a vertical part (512), the transverse part (511) is a part of the bottom of the outer ring air mixing chamber (31) and is provided with the lighting opening (5111), and the light reflecting piece (52) is positioned at the bending part of the transverse part (511) and the vertical part (512).

3. Burner for gas cooktops according to claim 2, characterized in that: the vertical portion (512) has a light transmission port (5121) that transmits the light reflected by the reflector (52) to the transmission passage (54).

4. Burner for gas cooktops according to claim 3, characterized in that: the lateral portion (511) is gradually inclined downward from the inside to the outside.

5. Burner for gas cooktops according to claim 4, characterized in that: the lighting port (5111) of the transverse part (511) is provided with an antifouling structure (7).

6. Burner for gas cooktops according to claim 5, characterized in that: the antifouling structure (7) is a metal mesh or a convex lens.

7. The burner for a gas range according to any one of claims 2 to 6, wherein: the photosensitive component (53) comprises:

a photosensitive tube (531);

a housing (532) for accommodating the light sensitive tube (531), the housing (532) having a through hole (5321) for exposing the positive and negative electrodes of the light sensitive tube (531);

the first cover body (533) covers the shell (532), a central hole (5331) for exposing the photosensitive tube (531) is formed in the central position of the first cover body (533), a support plate (5332) extending downwards is further formed in the position, corresponding to the through hole (5321), of the outer edge of the first cover body (533), and the support plate (5332) extends into the through hole (5321) and is located between the positive electrode and the negative electrode of the photosensitive tube (531); and

the second cover body (534) is detachably connected to the central hole (5331) of the first cover body (533), edges (5341) enabling the second cover body (534) to slide relative to the length direction of the shell (532) extend downwards from two sides of the second cover body (534), and the second cover body (534) is further provided with an opening hole (5342) communicated with the transmission channel (54).

8. Burner for gas cooktops according to claim 7, characterized in that: the hole wall of the opening (5342) extends upwards to form a vertical cylinder (5343), and the top end of the cylinder (5343) is communicated with the transmission channel (54).

9. Burner for gas cooktops according to claim 8, characterized in that: the top end of the cylinder (5343) is provided with a circle or half circle of convex edge (5344) for supporting the periphery of the transmission channel (54).