CN112413655A - Ignition protection device for kitchen range - Google Patents
Ignition protection device for kitchen range Download PDFInfo
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- CN112413655A CN112413655A CN202011107983.0A CN202011107983A CN112413655A CN 112413655 A CN112413655 A CN 112413655A CN 202011107983 A CN202011107983 A CN 202011107983A CN 112413655 A CN112413655 A CN 112413655A
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- 230000004224 protection Effects 0.000 title claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000010411 cooking Methods 0.000 claims description 20
- 239000012212 insulator Substances 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 239000007769 metal material Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 230000006698 induction Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000004044 response Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/08—Arrangement or mounting of burners
- F24C3/085—Arrangement or mounting of burners on ranges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/10—Arrangement or mounting of ignition devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Stoves And Ranges (AREA)
- Control Of Combustion (AREA)
Abstract
The invention discloses an ignition protection device for a stove, which comprises a stove shell, a burner, a liquid bearing disc and an ignition protection device, wherein the burner comprises a fire cover with a fire hole, the outer side wall of the fire cover is provided with a discharge boss positioned below the fire hole, the ignition protection device comprises a lighting mechanism and an ignition mechanism, the lighting mechanism is arranged on the stove shell or the liquid bearing disc and positioned on the outer side of the burner, the ignition mechanism is provided with an ignition electrode, one end of the ignition electrode is arranged on the lighting mechanism, and the other end of the ignition electrode extends to the vicinity of the discharge boss and is positioned below the fire hole. The ignition protection device has the advantages of simple structure and low cost, can obviously distinguish infrared light and ambient light generated by flame, has the functions of ignition, ignition success or failure recognition and flameout protection, is not influenced by furnace end oxidation, and ensures higher flameout induction reliability; the ignition is easy, and the ignition electrode is ensured not to contact with flame, so that the ignition electrode is not easy to oxidize.
Description
Technical Field
The invention relates to the technical field of cookers, in particular to an ignition protection device for a cooker.
Background
The stove mainly adopts a high-voltage discharge ignition mode at present, and flameout protection mainly comprises a thermocouple and ion induction flameout protection, and the two flameout protections are required to be in contact with flame, so that the contact part is oxidized, and the reliability is reduced. In particular, the thermocouple flameout protection device is not optimal in appearance and cost because the discharge electrode and the thermocouple are respectively independent structures. The ion extinction protection is integrated with induction ignition, so that an induction needle needs special materials for preventing oxidation, and when the oxidation contact of a furnace end is poor, the fault of flame cannot be induced, which is the pain point of the ion extinction protection igniter of the stove.
Disclosure of Invention
The invention aims to solve at least one of the problems in the prior related art to a certain extent, and therefore, the invention provides an ignition protection device for a stove, which has the advantages of simple structure, low cost, ignition and flameout protection functions, no contact of an ignition electrode with flame, difficult oxidation, no influence of furnace end oxidation on flameout protection and higher flameout induction reliability.
According to the ignition protection device for the cooker, the technical scheme is that:
the utility model provides an ignition protection device for cooking utensils, includes cooking utensils casing, combustor and holds the liquid dish, the combustor is including the fire lid that has the fire hole, wherein still includes ignition protection device the lateral wall of fire lid is equipped with and is located the boss that discharges of fire hole below, ignition protection device is including being arranged in detecting the daylighting mechanism and the ignition mechanism of infrared light in the flame, daylighting mechanism install in cooking utensils casing or hold the liquid dish on and be located the outside of combustor, ignition mechanism has ignition electrode, ignition electrode's one end sets up daylighting mechanism is last, and the other end extends to near the boss that discharges and be located the below of fire hole.
In some embodiments, the lighting mechanism includes a light pipe and a receiver, the lower end of the light pipe is connected to the cooker housing or the liquid receiving tray, the upper end of the light pipe extends to the outside of the fire cover, the ignition electrode is disposed at the upper end of the light pipe, and the receiver is disposed in the light pipe or under the light pipe and is used for detecting infrared light and/or ambient light generated by flame.
In some embodiments, the light guide tube is a metal tube, an opening is formed in the top of the metal tube, a light transmission portion for transmitting infrared light is formed at the opening, and the ignition electrode is connected to the upper end of the outer side wall of the metal tube.
In some embodiments, the ignition mechanism further comprises a connecting electrode, one end of the connecting electrode is connected with the lower end of the metal tube, and the other end of the connecting electrode is used for connecting with a stove igniter.
In some embodiments, the connection electrode extending outwards is integrally formed at the lower end of the side wall of the metal tube, and the ignition electrode is integrally formed with the metal tube or fixed by welding.
In some embodiments, the light guide tube is made of a non-transparent non-metallic material, an opening is formed at the top of the light guide tube, a light-transmitting portion for transmitting infrared light is formed at the opening, and the ignition electrode is disposed at the upper end of the outer side wall of the light guide tube and connected to the conductive element.
In some embodiments, the light guide tube is made of a light-permeable non-metal material, a light shielding layer for shielding light from entering the light guide tube is arranged on the peripheral wall of the light guide tube, a light-permeable portion for transmitting infrared light is arranged at the top of the light guide tube, and the ignition electrode is arranged at the upper end of the outer side wall of the light guide tube and connected with the conductive element.
In some embodiments, the ignition mechanism further comprises a connecting electrode, the connecting electrode is arranged at the lower end of the light pipe, one end of the connecting electrode is connected with the conductive element, and the other end of the connecting electrode is used for connecting with a stove igniter.
In some embodiments, the ignition protection device further comprises a mounting bracket and an insulator, the mounting bracket is connected with the cooker shell or the liquid bearing disc, and the upper end and the lower end of the insulator are respectively connected with the lower end of the light guide pipe and the mounting bracket, so that the light guide pipe does not contact with the cooker shell or the liquid bearing disc.
In some embodiments, the insulator is provided with a through hole for transmitting infrared light, the through hole is communicated with the light guide pipe, and the receiver is installed in the through hole.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the ignition protection device has a simple structure and low cost, the lighting mechanism is arranged on the cooker shell or the liquid bearing disc and positioned at the outer side of the burner, the ignition electrode is arranged on the lighting mechanism and faces the discharge boss, so that the cooker can obviously distinguish infrared light and ambient light generated by flame, whether the cooker is ignited successfully or flameout is easy to identify, the ignition protection device has the functions of igniting, identifying whether the ignition is successful or not and flameout protection, and the ignition protection device is not influenced by the oxidation of the burner, so that the flameout induction reliability is higher;
2. the free end of the ignition electrode extends to the vicinity of the discharge boss and is positioned below the discharge boss, so that the ignition electrode is ensured not to contact with flame while the ignition is easy, the ignition electrode is not easy to oxidize, the requirement on the material of the ignition electrode is reduced, and the processing and cost are lower.
Drawings
Fig. 1 is a schematic structural diagram of an ignition protection device mounted on a liquid bearing disc in embodiment 1 of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a partial enlarged view of portion B of FIG. 1;
fig. 4 is a flowchart of the cooking appliance ignition recognition in embodiment 1 of the present invention;
fig. 5 is a flowchart of the cooking appliance ignition recognition and misfire protection in embodiment 1 of the present invention.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
Example 1
Referring to fig. 1-3, the present embodiment provides an ignition protection device for a kitchen range, which includes a kitchen range housing (not shown in the drawings), a burner 2 and a liquid bearing plate 3, wherein the burner 2 includes a fire cover 21 having fire holes 211, and a gas mixing cavity 22, and the gas mixing cavity 22 is communicated with the fire holes 211. The fire detection device further comprises an ignition protection device 4, a discharge boss 212 located below the fire hole 211 is arranged on the outer side wall of the fire cover 21, the ignition protection device 4 comprises a lighting mechanism (not shown in the figure) and an ignition mechanism (not shown in the figure), and the lighting mechanism is installed on the stove shell or the liquid bearing disc 3 and located on the outer side of the combustor 2 and used for detecting infrared light intensity. The ignition mechanism has an ignition electrode 41, one end of the ignition electrode 41 is disposed on the lighting mechanism, and the other end extends to the vicinity of the discharge boss 212 and below the hole 211 to facilitate ignition. In the embodiment, when the stove is ignited and combusted, the intensity of infrared light generated by flame is greater than the intensity of ambient light, and at the moment, the stove controller can accurately judge whether the stove is ignited successfully according to the comparison relation between the detected intensity of the infrared light and a first preset threshold value; and at the cooking utensils by the ignition burning to flame extinction, infrared light intensity can reduce, and at this moment, the cooking utensils controller also can be according to the infrared light intensity that detects and the comparative relation of second preset threshold value, and whether accurate judgement cooking utensils are out of fire to the cooking utensils controller of being convenient for closes the cooking utensils gas valve rapidly according to flame-out signal, reaches flame-out protection's purpose.
It can be seen that the ignition protection device 3 of this embodiment, its simple structure, it is with low costs, through installing daylighting mechanism on cooking utensils casing or hold liquid dish 3 and be located the outside of combustor 2, ignition electrode 41 sets up on daylighting mechanism and towards the boss 212 that discharges for cooking utensils can obviously distinguish infrared light and the ambient light that flame produced, easily discern whether the cooking utensils are ignited successfully or the flame-out appears, have the ignition, discern whether the ignition is successful or not and flame-out protect function, and guarantee that ignition protection device 3 does not receive burner oxidation influence of combustor 2, make flame-out response reliability higher. In addition, the free end of the ignition electrode 41 extends to the vicinity of the discharge boss 212 and is positioned below the discharge boss 212, so that ignition is easy, and the ignition electrode 41 is ensured not to contact with flame, so that the temperature of the ignition electrode 41 is reduced, oxidation is not easy, the requirement on the material of the ignition electrode 41 is reduced, and the processing and cost are lower.
In the present embodiment, the lighting mechanism is mounted on the liquid receiving tray 3 as an example. Specifically, daylighting mechanism includes light pipe 42 and receiver 43, and the lower extreme of light pipe 42 is connected and is held liquid dish 3, and the upper end upwards extends to the outside of fire lid 21, sets up towards the boss 212 that discharges and lie in the ignition electrode 41 of the boss 212 below that discharges at the upper end of light pipe 42, like this, can guarantee that ignition electrode 41 is close to the boss 212 that discharges and arranges, guarantees to ignite easily, avoids ignition electrode 41 to contact flame. The receiver 43 is an infrared receiver, which is disposed in the light guide tube 42 or under the light guide tube 42 and electrically connected to the cooker controller, and is mainly used for detecting the intensity of infrared light in the flame and feeding back the detected intensity of infrared light to the cooker controller, so that the cooker controller can send out a corresponding control instruction.
Preferably, the light pipe 42 is a metal pipe made of a metal material, so that the light pipe 42 is effectively ensured to be opaque, and ambient light cannot directly enter the inside of the light pipe 42 due to different angles, thereby reducing the interference of the ambient light. The top of the metal tube is provided with an opening, and the opening is provided with a light transmission part 44, the light transmission part 44 of the embodiment is preferably infrared light transmission glass, and is used for infrared light to penetrate and enter the light guide tube 42, and can also play a dustproof role, so that dust accumulation on the receiver 43 or blockage inside the light guide tube 42 is prevented, and the use performance of the adopted mechanism is improved. In this embodiment, because light pipe 42 installs on holding liquid dish 3 to the printing opacity portion 44 that will regard as light entry sets up at light pipe 42 top, printing opacity portion 44 can just be to the bottom of a boiler in the culinary art process, ambient light gets into less this moment, and the infrared light that flame produced is abundant, because the infrared light proportion is few in the ambient light, can show the reduction interference factor, improves flame and produces infrared light detection accuracy nature, consequently, according to the infrared light intensity that detects, can accurately discern whether the cooking utensils have flame to produce.
Referring to fig. 2-3, further, an ignition electrode 41 is attached to the upper end of the outer sidewall of the metal tube. The ignition mechanism is also provided with a connecting electrode 45, one end of the connecting electrode 45 is connected with the lower end of the metal pipe, and the other end of the connecting electrode is used for connecting with an igniter of the stove. Therefore, the light guide tube 42 made of the metal material can conduct the infrared light in the flame and shield the ambient light from directly entering the light guide tube 42, and can also play a role of a high-voltage discharge connection conductor, so that the ignition electrode 41 and the connection electrode 45 are reliably connected, and the ignition reliability is improved.
In the present embodiment, the ignition electrode 41 and the upper end of the metal tube (i.e. the light guide tube 42) are integrally formed, or the ignition electrode 41 and the metal tube are fixedly connected by welding, so as to ensure the connection firmness and reliability of the ignition electrode 41 and the light guide tube 42, and to prolong the service life of the ignition electrode 41. The lower end of the metal tube (i.e. the light guide tube 42) is provided with a first groove (not shown in the figure) which is open downwards, and the lower end of the side wall of the first groove is provided with a connecting electrode 45 which extends outwards along the integrated forming, so as to improve the connection firmness and reliability of the connecting electrode 45 and the light guide tube 42.
Referring to fig. 3, further, the ignition protection device 4 further includes a mounting bracket 46 and an insulator 47, the mounting bracket 46 is connected to the liquid receiving tray 3, and the upper and lower ends of the insulator 47 are respectively connected to the lower end of the light pipe 42 and the mounting bracket 46, so that the light pipe 42 does not contact the liquid receiving tray 3. Therefore, the light guide pipe 42 is stably and reliably arranged on the liquid bearing disc 3 through the matching of the mounting bracket 46 and the insulator 47, and the lower end edge of the light guide pipe 42 is completely not contacted with the liquid bearing disc 3 under the action of the insulator 47, so that the high-voltage discharge to surrounding metal is prevented, and the use safety is improved. Preferably, the insulator 47 is a ceramic body.
Specifically, the mounting bracket 46 has a second groove that opens upward, the second groove being arranged to correspond to the first groove at the lower end of the light pipe 42. The mounting bracket 46 is fixed by a tight fit and is fixed inside the bottom of the liquid bearing disc 3 by a nut. The drip pan 3 is provided with an opening through which the insulator 47 passes at a position corresponding to the second groove, so that the second groove communicates with the first groove through the opening, and the second groove and the first groove together define a mounting cavity adapted to mount the insulator 47. The lower end and the upper end of the insulator 47 are respectively inserted into the second groove and the first groove, and the first groove of the light pipe 42 is connected with the insulator 47 in an over-hard matching manner, so that the light pipe 42 and the insulator 47 are integrated. In addition, the height of the insulator 47 in the vertical direction is greater than the sum of the heights of the second groove and the first groove in the vertical direction, so that the lower end edge of the first groove is ensured not to contact the liquid bearing disc 3, and the high-voltage discharge to the liquid bearing disc 3 is effectively avoided.
Specifically, the insulator 47 is provided with a through hole 471 for infrared light to penetrate through, the upper end of the through hole 471 is communicated with the light guide pipe 42, the lower end of the through hole 471 is communicated with the inside of the cooker shell, and the receiver 43 is installed in the through hole 471 and electrically connected with the cooker controller, so that the through hole 471 of the insulator 47 can play a role in installing the receiver 43 and allowing infrared light to penetrate through. In this embodiment, the receiver 43 may be fixed inside the through hole 471 by a sealant, so as to ensure that the receiver 43 is stably and reliably installed inside the through hole 471, and meanwhile, the sealing performance between the receiver 43 and the inner side wall of the through hole 471 can be improved, and infrared light is prevented from entering the inside of the bottom case of the kitchen range.
The control method of the cooking range of the embodiment in terms of ignition and flameout protection is described below with reference to fig. 4-5:
before the stove is ignited, the receiver 43 in the lighting mechanism detects the infrared light intensity V of the environmentEnvironment(s)The intensity of the infrared light detected at this time is proportional to the output current of the receiver 43. After the stove is ignited, the flame generates strong infrared light, the strong infrared light reaches the receiver 43 through the light transmission part 44, the light guide pipe 42 and the through hole 471 of the insulator 47, the strong infrared light is amplified by the receiver 43 to generate photocurrent, and the infrared light intensity V of the flame is obtained through A/D acquisition of a CPU (central processing unit) detected by an igniter of the stoveFire(s)The V isFire(s)＞VEnvironment(s)Indicating an increase in light intensity.
Referring to fig. 4, a control method of a cooker includes the steps of:
s1: continuously judging whether the stove is ignited or not, if so, controlling the ignition electrode 41 to discharge, and then entering the next step; specifically, when a user manually opens the stove gas valve, an ignition signal is sent out, and the stove controller controls the stove igniter to work according to the ignition signal, so that the ignition electrode 41 discharges electricity to the discharge boss 212, and the gas flowing out of the fire hole 211 is ignited.
S2: acquiring and judging whether the infrared light intensity is large or notIf yes, go to the next step, otherwise go back to step S1; in particular, the first preset threshold may be an infrared light intensity V of the environmentEnvironment(s). The light collecting mechanism of the ignition protection device 4 obtains the infrared light intensity V at the top of the light guide pipe 42Fire(s)The stove controller judges the infrared light intensity VFire(s)Whether it is greater than a first preset threshold value, if it is, the infrared light intensity VFire(s)If the value is greater than the first preset threshold value, the cooking range is ignited and generates flame; if the infrared light intensity V isFire(s)If the value is less than or equal to the first preset threshold value, the cooking range is not ignited, and the step S1 needs to be returned for next ignition.
S3: and acquiring and judging whether the infrared light intensity is continuously greater than a first preset threshold value within a first preset time, if so, judging that the stove is successfully ignited, otherwise, returning to the step S1. Therefore, by measuring the intensity of the infrared light, the software identifies the generation of flame, so that the aim of accurately identifying whether the stove is ignited successfully is fulfilled.
Referring to fig. 5, the control method further includes the steps of:
s4: acquiring and judging whether the light intensity reduction value is greater than a second preset threshold value, if so, entering the next step, otherwise, continuously executing the step S4; specifically, the second preset threshold is smaller than the first preset threshold, and the light intensity reduction value is VFire(s)And VEnvironment(s)The difference of (a). When the stove is flamed out, the light intensity detected by the lighting mechanism is reduced because the stove is changed from flame to no flame, and when the light intensity reduction value is larger than a second preset threshold value, the stove can be preliminarily judged to be flamed out and enters the next step; if the light intensity reduction value is less than or equal to a second preset threshold value, the cooking utensil still burns and generates flame.
S5: acquiring and judging whether the light intensity reduction value is continuously larger than a second preset threshold value within a second preset time, if so, judging that the cooker is extinguished and entering the next step, otherwise, returning to the step S4;
s6: and starting to record the flameout time, and controlling the gas valve of the stove to be closed when the flameout time reaches the protection time. Therefore, the stove can obviously distinguish infrared light and ambient light generated by flame, accurately identify whether the stove is flameout or not according to the measurement result of the infrared light intensity, and perform flameout protection after the stove is determined to be flameout, so that the flameout induction reliability is high.
Example 2
The present embodiment is different from embodiment 1 in that: the light guide 42 is made of different materials and the ignition electrode 41 and the connection electrode 45 are connected reliably. Specifically, the light pipe 42 is made of a non-metallic material that is opaque to light, such as ceramic or plastic that is opaque and resistant to high temperatures. The ignition electrode 41 is arranged at the upper end of the outer side wall of the light pipe 42 and connected with the conductive element, the connection electrode 45 is arranged at the lower end of the side wall of the light pipe 42, one end of the connection electrode is connected with the conductive element, the other end of the connection electrode is used for connecting with the stove igniter, and other parts of the connection electrode are the same as those of the embodiment 1.
It can be seen that the light pipe 42 is made of a non-light-tight non-metallic material, and the fire electrode 41 and the connecting electrode 45 are reliably connected through a conductive element, so that the light pipe 42 is prevented from being used as a high-voltage discharge connecting conductor, the electric shock risk caused by the user touching the light pipe 42 is avoided, and the use safety is improved.
Example 3
The present embodiment is different from embodiment 2 in that: the light pipe 42 is made of a different material. Specifically, the light guide 42 is made of a non-metal material that is transparent to light, for example, glass or plastic that is transparent and resistant to high temperature, and a light shielding layer that shields light from entering the light guide 42 is disposed on the peripheral wall of the light guide 42 to prevent ambient light from being projected into the light guide 42 from the outside of the peripheral wall of the light guide 42, thereby reducing the interference of the ambient light.
When the light guide 42 is a glass tube or a plastic tube with strong light transmittance, the upper end of the light guide 42 can be closed, and the top of the light guide 42 can be used as the light-transmitting portion 44 as described in embodiment 1 or 2 because the top of the light guide 42 has light transmittance, so that the opening at the top of the light guide 42 and the extra light-transmitting portion 44 can be omitted; the other portions were the same as in example 2.
It can be seen that the light pipe 42 is made of a light-transmissive non-metallic material, so that the top of the light pipe 42 can serve as the light-transmissive portion 44, thereby eliminating the opening at the top of the light pipe 42 and the additional light-transmissive portion 44, reducing the number of processing steps and manufacturing materials, and lowering the cost.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (10)
1. An ignition protection device for a kitchen range comprises a kitchen range shell, a burner (2) and a liquid bearing disc (3), the burner (2) comprises a fire cover (21) with fire holes (211), characterized in that the utility model also comprises an ignition protection device (4), a discharge boss (212) positioned below the fire hole (211) is arranged on the outer side wall of the fire cover (21), the ignition protection device (4) comprises a lighting mechanism and an ignition mechanism for detecting infrared light in flame, the lighting mechanism is arranged on the cooker shell or the liquid bearing disc (3) and is positioned at the outer side of the burner (2), the ignition mechanism is provided with an ignition electrode (41), one end of the ignition electrode (41) is arranged on the lighting mechanism, and the other end of the ignition electrode extends to the vicinity of the discharge boss (212) and is positioned below the fire hole (211).
2. The ignition protection device for the kitchen range according to claim 1, characterized in that said lighting mechanism comprises a light pipe (42) and a receiver (43), the lower end of said light pipe (42) is connected to said kitchen range housing or said liquid-receiving plate (3), the upper end extends to the outside of said fire cover (21), said ignition electrode (41) is arranged on the upper end of said light pipe (42), and said receiver (43) is arranged in said light pipe (42) or under said light pipe (42).
3. The ignition protection device for the cooking utensil as claimed in claim 2, characterized in that the light pipe (42) is a metal pipe, the top of the metal pipe is provided with an opening, a light-transmitting part (44) for transmitting infrared light is arranged at the opening, and the ignition electrode (41) is connected with the upper end of the outer side wall of the metal pipe.
4. The ignition protection device for the cooker as claimed in claim 3, wherein the ignition mechanism further has a connection electrode (45), one end of the connection electrode (45) is connected with the lower end of the metal tube, and the other end is used for connecting with a cooker igniter.
5. An ignition protection device for kitchen range according to claim 4, characterized in that said connection electrode (45) extending outwards is integrally formed at the lower end of the side wall of said metal tube, said ignition electrode (41) being integrally formed with said metal tube or fixed thereto by welding.
6. An ignition protection device for kitchen range according to claim 2 characterized in that said light pipe (42) is made of non-metallic material without light transmission, the top of said light pipe (42) is provided with an opening, a light transmission part (44) for transmitting infrared light is provided at said opening, said ignition electrode (41) is provided on the upper end of the outer side wall of said light pipe (42) and connected with conductive element.
7. The ignition protection device for the cooking utensil as claimed in claim 2, characterized in that the light pipe (42) is made of a light-permeable non-metal material, the peripheral wall of the light pipe (42) is provided with a light shielding layer for shielding light from entering the light pipe (42), the top of the light pipe (42) is provided with a light-permeable part (44) for transmitting infrared light, and the ignition electrode (41) is arranged at the upper end of the outer side wall of the light pipe (42) and is connected with a conductive element.
8. An ignition protection device for kitchen range according to claim 6 or 7, characterized in that said ignition mechanism further comprises a connecting electrode (45), said connecting electrode (45) is arranged at the lower end of said light pipe (42) and one end of it is connected to said conductive element and the other end is used for connecting the kitchen range igniter.
9. An ignition protection device for a kitchen range according to any one of claims 2-7, characterized in that said ignition protection device (4) further comprises a mounting bracket (46) and an insulator (47), said mounting bracket (46) is connected with said kitchen range shell or said liquid-bearing disc (3), the upper and lower ends of said insulator (47) are respectively connected with the lower end of said light pipe (42) and said mounting bracket (46), and said light pipe (42) is not contacted with said kitchen range shell or said liquid-bearing disc (3).
10. An ignition protection device for kitchen range as claimed in claim 9, characterized in that said insulator (47) is provided with a through hole (471) for transmitting infrared light, said through hole (471) communicates with said light pipe (42), said receiver (43) is mounted in said through hole (471).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011107983.0A CN112413655B (en) | 2020-10-16 | 2020-10-16 | Ignition protection device for kitchen range |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011107983.0A CN112413655B (en) | 2020-10-16 | 2020-10-16 | Ignition protection device for kitchen range |
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| CN112413655A true CN112413655A (en) | 2021-02-26 |
| CN112413655B CN112413655B (en) | 2022-11-25 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0384773A2 (en) * | 1989-02-24 | 1990-08-29 | Gas Research Institute | Method and apparatus for increasing radiant heat production of hydrocarbon fuel combustion systems |
| DE3871774D1 (en) * | 1988-03-09 | 1992-07-09 | Harper Wyman Co | GAS BURNER WITH SPARK IGNITION. |
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