CN108167884B - Microwave oven and fire extinguishing method thereof - Google Patents
Microwave oven and fire extinguishing method thereof Download PDFInfo
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- CN108167884B CN108167884B CN201711420685.5A CN201711420685A CN108167884B CN 108167884 B CN108167884 B CN 108167884B CN 201711420685 A CN201711420685 A CN 201711420685A CN 108167884 B CN108167884 B CN 108167884B
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- dry powder
- fire
- fire extinguishing
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/006—Fire prevention, containment or extinguishing specially adapted for particular objects or places for kitchens or stoves
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/11—Permanently-installed equipment with containers for delivering the extinguishing substance controlled by a signal from the danger zone
- A62C35/15—Permanently-installed equipment with containers for delivering the extinguishing substance controlled by a signal from the danger zone with a system for topping-up the supply of extinguishing material automatically
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to the technical field of microwave oven safety, and discloses a microwave oven and a fire extinguishing method thereof. The microwave oven comprises an oven body, a heating cavity is arranged in the oven body, the microwave oven also comprises a fire extinguishing module used for spraying fire extinguishing materials into the heating cavity with fire, the fire extinguishing module is a dry powder fire extinguishing module, the dry powder fire extinguishing module comprises a dry powder fire extinguishing execution module, and the dry powder fire extinguishing execution module is used for spraying dry powder for extinguishing fire into the heating cavity; and the dry powder fire extinguishing control module is used for detecting a fire signal in the heating cavity and can allow or block the dry powder fire extinguishing execution module to spray dry powder into the heating cavity according to the fire signal. The microwave oven is integrated with the fire extinguishing module, and the microwave oven can quickly and effectively control or extinguish fire when the fire occurs in the heating cavity. The microwave oven combines the fire extinguishing technology and the microwave oven technology, and has high safety performance, economy and practicability.
Description
Technical Field
The invention relates to the technical field of microwave oven safety, in particular to a microwave oven and a fire extinguishing method thereof.
Background
A microwave oven is an apparatus for cooking food using microwaves radiated from a magnetron into a microwave cavity. The principle of microwave oven heating is to utilize the high-frequency characteristics of microwave to make polar molecules in food move at high speed in the electromagnetic alternating field generated by microwave field to generate heat. Compared with other common cooking utensils, the microwave oven has the obvious characteristics of high efficiency, high speed, high safety, high reliability and the like.
When the existing microwave oven is used for heating, the oven door is closed firstly, then the heating time is set, the microwave oven starts to heat, the system automatically stops heating when the timing time is up, and then a user takes out food and closes the oven door. However, when the microwave oven is in use, a small amount of food juice splashes into the waveguide port, and if the microwave oven is not cleaned in time, after long-time accumulation, the phenomenon of ignition and local high temperature at the waveguide port can occur, which causes spontaneous combustion of the plastic insulation surface layer of the electrical appliance component and causes fire; in addition, in the use process of the microwave oven, when the timing knob is clamped, the timing time is up, however, the microwave oven is continuously heated, after moisture in food is completely evaporated, the food is burnt and carbonized, when the temperature reaches the ignition point of the food, the food can generate the spontaneous combustion phenomenon, and if the temperature does not reach the ignition point of the food, the food can be extinguished in time, and then the fire can be generated.
Because the existing microwave oven does not have the automatic fire extinguishing device which can extinguish fire and ensure the safety performance of the microwave oven in work engineering, the existing microwave oven can bring huge hidden danger to the life safety of people.
Disclosure of Invention
The invention aims to solve the technical problem of spontaneous combustion caused by long-term use or component failure of the microwave oven in the prior art. In contrast, the conventional technology is not regarded by design and manufacturers because the problem is not common. Even in order to improve the use safety of the product, the general solution idea of practitioners in the art is limited to improving the service life and reliability of the components, so as to avoid other problems such as excessive volume and high cost of the product.
In order to solve the problems, the invention originally arranges an automatic fire extinguishing device which can extinguish fire and ensure the safety performance of the microwave oven in the work engineering so as to reduce the huge hidden trouble of the microwave oven to the life safety of people.
Specifically, the invention provides a microwave oven, which comprises an oven body, wherein a heating cavity is arranged in the oven body, and the microwave oven also comprises a fire extinguishing module used for spraying fire extinguishing materials into the heating cavity in a fire situation.
Preferably, the fire extinguishing module is a dry powder fire extinguishing module integrated in the furnace body, and the dry powder fire extinguishing module comprises:
the dry powder fire extinguishing execution module is used for spraying dry powder for extinguishing fire into the heating cavity;
the dry powder extinguishing control module is used for detecting a fire signal in the heating cavity and can allow or block the dry powder extinguishing execution module to spray dry powder into the heating cavity according to the fire signal.
Preferably, the microwave oven further comprises a standby power supply, and the standby power supply is electrically connected with the dry powder extinguishing control module.
Preferably, dry powder execution of putting out a fire module includes dry powder storage jar, this dry powder storage jar set up in the outside of furnace body is connected with dry powder conveying pipeline, and this dry powder conveying pipeline follows the outer wall of furnace body extends to the top of furnace body is connected with the shower nozzle at the top of this furnace body, the spout of this shower nozzle with the heating chamber is linked together.
Preferably, the dry powder fire extinguishing control module comprises:
a detector for detecting the fire signal;
the electromagnetic valve is arranged on the dry powder conveying pipeline and can be opened or closed by itself to allow or block the dry powder conveying pipeline to convey the dry powder;
and the circuit control board can receive the fire signal detected by the detector and can control the electromagnetic valve to be opened or closed according to the fire signal.
Preferably, the detectors are smoke detectors disposed at the top centre and top edge of the heating chamber.
Preferably, the spray head has a plurality of spray heads each disposed at the top of the heating chamber, and the spray heads and the detectors are arranged to be staggered with each other.
Preferably, the dry powder storage tank is arranged in the interlayer, and the dry powder conveying pipeline extends in the interlayer and extends to the top of the furnace body.
Preferably, the circuit control board is arranged in the interlayer and integrated on the control panel.
The present invention in another aspect provides a fire extinguishing method of a microwave oven, comprising:
the smoke detector detects a fire signal and sends the fire signal to the circuit control board;
the circuit control board judges that the received fire signal reaches a preset threshold value and controls the electromagnetic valve to be opened so as to control the fire extinguishing module to spray fire extinguishing materials into the heating cavity;
and the circuit control board judges that the received fire signal is lower than a preset threshold value and controls the electromagnetic valve to be closed so as to block the fire extinguishing module from spraying fire extinguishing materials into the heating cavity.
Preferably, the fire extinguishing method of the microwave oven includes:
and when the circuit control board judges that the received fire signal reaches a preset threshold value, the circuit control board cuts off an external power supply and starts a standby power supply.
Through the technical scheme, the invention has the beneficial effects that:
(1) the microwave oven is integrated with the fire extinguishing module, and the microwave oven can quickly and effectively control or extinguish fire when the fire occurs in the heating cavity. The microwave oven combines the fire extinguishing technology and the microwave oven technology, and has high safety performance, economy and practicability.
(2) The microwave oven has the advantages that the components are convenient to disassemble, and at least part of the components are provided with the installation parts which are convenient to disassemble and assemble, so that the microwave oven has a stable structure and is convenient to disassemble and assemble.
(3) The microwave oven of the invention is provided with the interlayer, so that the part positioned outside the oven body in the fire extinguishing module can be arranged in the interlayer, thereby preventing the fire extinguishing module from being exposed outside the microwave oven to be damaged.
Drawings
Fig. 1 is a front view of a microwave oven according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a schematic view of a first internal structure of a microwave oven according to the present invention;
FIG. 4 is a schematic view of the overall construction of the fire suppression module of the present invention;
FIG. 5 is an exploded view of a fire suppression module of the present invention;
FIG. 6 is a schematic view of the mounting structure of the delivery tube, the nozzle and the plug of the present invention;
fig. 7 is a schematic view of a second internal structure of a microwave oven according to the present invention;
fig. 8 is a schematic view of a third internal structure of the microwave oven of the present invention.
Description of the reference numerals
1 furnace body 2 dry powder storage tank
3 dry powder conveying pipeline 31 powder outlet pipe
32 powder inlet pipe 33 conveying pipe
331a pipeline fixing member
331b lower fixing plate 332 plug
4 spray head 5 detector
51 Probe mounting plate 6 solenoid valve
7 circuit control board 8 standby power supply
9 outer cover
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves.
Referring to fig. 1 to 8, the present invention provides a microwave oven including an oven body 1, a heating chamber formed in the oven body 1, and a fire extinguishing module integrated in the microwave oven, wherein the fire extinguishing module is capable of spraying fire extinguishing material into the heating chamber when a fire occurs in the heating chamber, thereby controlling and extinguishing the fire in the heating chamber.
According to the prior art, in the use process of the microwave oven, a fire condition can occur in the heating cavity due to various reasons, under the condition, the heating cavity is in a closed state, external fire-fighting equipment is difficult to immediately control the fire condition, and the fire condition is easily expanded or even causes the microwave oven to explode. Accordingly, the present invention provides a microwave oven having a fire extinguishing module integrated therein, which can rapidly and effectively control or extinguish a fire when the fire occurs in a heating chamber.
Through the technical scheme, the microwave oven can timely control or eliminate the fire in the self-closed cooking oven cavity, wherein the effect of controlling or eliminating the fire in the self-closed cooking oven cavity is particularly remarkable. The microwave oven of the invention combines the fire extinguishing technology and the microwave oven technology, and creatively designs the microwave oven with the fire extinguishing module with high safety performance and high practicability.
With continued reference to fig. 1-8, as a preferred embodiment of the present invention, the fire suppression module is a dry powder fire suppression module. According to the related common knowledge, the dry powder fire extinguishing device is suitable for extinguishing petroleum product, paint and organic solvent fire, can inhibit the chain reaction of combustion to extinguish fire, is also suitable for extinguishing liquid, gas and electric fire, and has higher cost performance. The fire extinguishing module is selected as the dry powder fire extinguishing module, so that the microwave oven has good fire extinguishing effect and stronger practicability. Of course, it is understood that the fire extinguishing module can be a foam fire extinguishing module, a high temperature fire retarding fire extinguishing module, a carbon dioxide fire extinguishing module, etc. according to actual needs.
Furthermore, the dry powder fire extinguishing module can comprise a dry powder fire extinguishing execution module and a dry powder fire extinguishing control module, wherein the dry powder fire extinguishing execution module is used for spraying dry powder for extinguishing fire into the heating cavity, namely the dry powder fire extinguishing execution module is used for providing the dry powder and conveying the dry powder; the dry powder fire extinguishing control module is used for detecting a fire signal in the heating cavity and can allow or block the dry powder fire extinguishing execution module to spray dry powder into the heating cavity according to the fire signal. This kind of setting makes this dry powder fire extinguishing module can the automatic detection condition of a fire to when the condition of a fire appears, can spray the dry powder to the heating intracavity automatically, need not artificial microwave oven and start dry powder fire extinguishing module of being close, greatly reduced the microwave oven that the condition of a fire appears to user's potential injury.
The dry powder fire extinguishing execution module further comprises a dry powder storage tank 2, the dry powder storage tank 2 is arranged on the outer side of the bottom of the furnace body 1 and is connected with a dry powder conveying pipeline 3, the dry powder conveying pipeline 3 can extend to the top of the furnace body 1 along the outer wall surface of the furnace body 1, and the dry powder conveying pipeline can specifically extend to the outer side of the top of the furnace body 1. The dry powder conveying pipeline 3 is further connected with a spray head 4 at the outer side of the top of the furnace body 1, and a nozzle of the spray head 4 is communicated with a heating cavity of the furnace body 1. It will be appreciated that the dry powder from the dry powder storage tank 2 can be transported to the spray head 4 via the dry powder delivery line 3 and sprayed into the heating chamber by the spray head 4, thereby controlling the fire; the dry powder storage tank 2 and the dry powder conveying pipeline 3 are arranged outside the furnace body 1, so that the dry powder conveying time can be effectively shortened, and the fire condition can not influence the dry powder conveying.
The dry powder fire extinguishing control module further comprises a detector 5 for detecting fire signals, wherein the detector 5 is electrically connected with a circuit control board 7 and can transmit the fire signals to the circuit control board 7; the circuit control board 7 is arranged on the outer side of the furnace body 1, and the circuit control board 7 is electrically connected with the electromagnetic valve 6 and can control the electromagnetic valve 6 to be opened or closed according to the fire signal; this solenoid valve 6 sets up on dry powder conveying line 3, and when this solenoid valve 6 was opened, dry powder conveying line 3 can carry the dry powder, and when this solenoid valve 6 closed, dry powder conveying line 3 was blocked and then can not carry the dry powder. The dry powder fire extinguishing control module can realize the control of the fire condition in the heating cavity only through the simple matching of the detector 5, the electromagnetic valve 6 and the circuit control panel 7, so that the microwave oven has the fire extinguishing function and is more economical and practical.
The detector 5 is preferably a smoke detector arranged in the heating cavity, and the smoke detector is sensitive to the induction, so that the microwave oven can control the fire in time. As a preferred structure of the present invention, smoke detectors are respectively disposed at the top center and the top edge of the heating chamber, and detection ends of the smoke detectors are disposed from the top center and the top edge of the heating chamber toward the bottom of the heating chamber, so that a fire in the heating chamber can be detected more comprehensively. Furthermore, a plurality of spray heads 4 can be arranged at the top of the heating cavity, so that the fire extinguishing effect can be enhanced; a plurality of spray heads 4 and the smoke detectors are arranged in a staggered mode, and mutual influence between the spray heads 4 and the smoke detectors is avoided so that the fire extinguishing effect is reduced.
In addition, the microwave oven of the present invention may further include a standby power supply 8, and the standby power supply 8 is electrically connected to the circuit control board 7. It can be understood that when a fire occurs in the heating chamber, the power supply of the microwave oven needs to be cut off to avoid a greater disaster caused by the fire, the operation of the dry powder fire extinguishing module also needs to be supported by the power supply, and if the power supply of the microwave oven is cut off, a separate power supply needs to be provided for the dry powder fire extinguishing module, so that the standby power supply 8 is added, and the standby power supply 8 can be a battery. Specifically, when the circuit control board 7 detects that a fire occurs in the heating chamber, the circuit control board 7 can cut off the power supply of the microwave oven and activate the backup power supply 8 to cause the dry powder fire extinguishing module to extinguish the fire.
In addition, in order to facilitate the realization of the fire extinguishing function of the microwave oven of the present invention, so that the microwave oven is structurally stable and more convenient to disassemble and assemble, each component of the microwave oven of the present invention is preferably designed to be a structure convenient to disassemble and assemble, and each component can be provided with an assembling part convenient to disassemble and assemble. The following is a detailed description of the mounting structure of the microwave oven according to the present invention for achieving the above-described effects.
Specifically, the dry powder conveying pipeline 3 may include a powder outlet pipe 31, a powder inlet pipe 32 and a conveying pipe 33, an input end of the powder outlet pipe 31 is connected to the dry powder storage tank 2, and an output end is connected to one port of the electromagnetic valve 6; the other port of the electromagnetic valve 6 is connected with the input end of the powder inlet pipe 32, and the output end of the powder inlet pipe 32 is connected with the input end of the conveying pipe 33; the delivery pipe 33 can extend to the outside of the top of the furnace body 1 along the outer wall surface of the furnace body 1 and is provided with a nozzle connecting pipe at the outside of the top of the furnace body 1, the delivery pipe 33 is communicated with the nozzle 4 through the nozzle connecting pipe, and the output end of the delivery pipe 33 is provided with a plug 332 to prevent the dry powder from flowing out from the output end of the delivery pipe 33. The arrangement facilitates the disassembly and assembly of the dry powder conveying pipeline 3 and facilitates the control of the electromagnetic valve 6 on/off of the dry powder conveying pipeline 3.
The delivery pipe 33 may be provided with a plurality of pipe fixing members 331, wherein each pipe fixing member 331 includes an upper fixing plate 331a and a lower fixing plate 331b, the lower fixing plate 331b has a length greater than that of the upper fixing plate 331a, a first recess is formed in the upper fixing plate 331a, a second recess is formed in the lower fixing plate 331b, and the first recess and the second recess are formed to surround a slot when the upper fixing plate 331a and the lower fixing plate 331b are fixed to each other. Further, when the duct 33 is installed, the duct 33 can be installed on the outer wall surface of the furnace body 1 by placing the duct 33 on the second groove of the lower fixing plate 331b, connecting the upper fixing plate 331a and the lower fixing plate 331b with screws, so that the duct 33 can be fixed in the groove hole, and connecting the lower fixing plate 331b and the furnace body 1 with screws. This arrangement facilitates the detachment and attachment of the duct 33, and the slot of the duct holder 331 is similar to the duct 33 in shape, which makes the duct 33 more effectively attached and less vulnerable to the duct holder 331 by being subjected to a force distribution.
The smoke detector may be provided with a probe mounting plate 51 to which the smoke detector can be fixed, and the probe mounting plate 51 is fixedly connected to the furnace body 1 by screws, and the smoke detector can be fixed in the heating chamber. The smoke detector can be integrally arranged with the probe mounting plate 51 by the arrangement, the smoke detector can be separated from the furnace body 1 by detaching the probe mounting plate 51, the friction damage caused by directly detaching the smoke detector is avoided, and meanwhile, the arrangement position of the smoke detector in the heating cavity is convenient to change. Of course, the smoke detector can also be directly and fixedly connected with the furnace body 1 through screws as required, so that the smoke detector is fixed in the heating cavity, specifically, the smoke detector positioned at the center of the top of the heating cavity is directly and fixedly connected with the furnace body 1 through screws, and the smoke detector positioned at the edge of the top of the heating cavity is fixedly connected with the furnace body 1 through the probe mounting plate 51.
According to a preferred embodiment of the present invention, the microwave oven of the present invention may further include a housing 9 disposed outside the oven body 1, with an interlayer formed between the housing 9 and the oven body 1. Dry powder storage tank 2 sets up in the interlayer in the bottom outside of furnace body 1 and can be fixed mutually with the internal face of shell 9, and dry powder conveying pipeline 3 one end links to each other with dry powder storage tank 2, and the other end extends and extends to the interlayer in the top outside of furnace body 1 in the interlayer, and then dry powder conveying pipeline 3 can link to each other with shower nozzle 4 in the interlayer in the top outside of furnace body 1. The circuit board 7 is arranged in the interlayer and can be integrated on a control panel fixed on the housing 9. A backup power supply 8 may also be provided in the interlayer, with the backup power supply 8 being provided close to the circuit control board 7. It can be seen that, since the microwave oven of the present invention has the interlayer, the parts of the dry powder fire-extinguishing module located outside the oven body 1 can be disposed in the interlayer, thereby preventing the dry powder fire-extinguishing module from being exposed to the outside of the microwave oven to be damaged.
The present invention in another aspect provides a fire extinguishing method of a microwave oven, the fire extinguishing method including the steps of:
s1, the smoke detector continuously detects the smoke concentration value in the heating cavity and sends the detected smoke concentration value to the circuit control board 7;
s2, the circuit control board 7 compares the received smoke concentration value with a preset threshold value, when the circuit control board 7 detects that the smoke concentration value in the heating cavity reaches the preset threshold value, namely, the fire condition occurs in the heating cavity, the circuit control board 7 sends a control signal to the electromagnetic valve 6, the electromagnetic valve 6 is opened, at this time, the dry powder in the dry powder storage tank 2 sequentially enters the conveying pipe 33 through the powder outlet pipe 31 and the powder inlet pipe 32, then the dry powder flows into the spray head 4 through the spray head connecting pipe on the conveying pipe 33, and then the spray head 4 can spray the dry powder into the heating cavity to extinguish the fire;
s3, when the fire is extinguished, the smoke is gradually dispersed, the smoke concentration is reduced, the circuit control board 7 detects that the smoke concentration value sent by the smoke detector is lower than a preset threshold value, the circuit control board 7 sends a control signal to the electromagnetic valve 6, the electromagnetic valve 6 is closed, so that the dry powder in the dry powder storage tank 2 cannot flow into the powder inlet pipe 32 through the powder outlet pipe 31, and the spray head 4 stops spraying the dry powder.
As a preferred embodiment of the present invention, in the above step S2, when the circuit control board 7 detects that the smoke concentration value in the heating cavity reaches the predetermined threshold value, the circuit control board 7 may cut off the external power supply for supplying power to the microwave oven and activate the backup power supply 8, the backup power supply 8 being used for supplying power to the dry powder fire extinguishing module. This can be done on the one hand to avoid a fire in the cooking chamber igniting an external power supply to cause a greater disaster and on the other hand to provide a separate power supply for the dry powder fire suppression module to better control or extinguish the fire.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (7)
1. A microwave oven, including the furnace body (1), there are heating chambers in this furnace body (1), characterized by that, the said microwave oven also includes the fire extinguishing module used for spraying into the said heating chamber in the fire situation and putting out a fire the material;
the fire extinguishing module is integrated in dry powder fire extinguishing module on furnace body (1), and this dry powder fire extinguishing module includes: the dry powder fire extinguishing execution module is used for spraying dry powder for extinguishing fire into the heating cavity; the dry powder fire extinguishing control module is used for detecting a fire signal in the heating cavity and can allow or block the dry powder fire extinguishing execution module to spray dry powder into the heating cavity according to the fire signal; the dry powder fire extinguishing control module comprises a detector (5), and the detector (5) is used for detecting the fire signal; the detector (5) and a probe mounting plate (51) which can be fixed on the furnace body (1) are arranged integrally;
the dry powder fire extinguishing execution module comprises a dry powder storage tank (2), the dry powder storage tank (2) is connected with a dry powder conveying pipeline (3), a plug head (332) is arranged at the end part of the dry powder conveying pipeline (3), the dry powder conveying pipeline (3) extends to the top of the furnace body (1) along the outer wall surface of the furnace body (1) and is connected with a plurality of spray heads (4) at the top of the furnace body (1), and the spray nozzles of the spray heads (4) are communicated with the heating cavity;
the microwave oven is characterized by further comprising a shell (9) arranged on the outer side of the oven body (1), an interlayer is formed between the shell (9) and the oven body (1), the dry powder storage tank (2) is arranged in the interlayer, and the dry powder conveying pipeline (3) extends in the interlayer.
2. The microwave oven according to claim 1, further comprising a backup power source (8), wherein the backup power source (8) is electrically connected to the dry powder fire extinguishing control module.
3. The microwave oven of claim 1, wherein the dry powder extinguishing control module comprises:
the electromagnetic valve (6) is arranged on the dry powder conveying pipeline (3) and can be opened or closed by the electromagnetic valve (6) to allow or block the dry powder conveying pipeline (3) to convey the dry powder;
the circuit control board (7), this circuit control board (7) can receive the condition of a fire signal that detector (5) detected to can be according to the condition of a fire signal control solenoid valve (6) open or close.
4. A microwave oven according to claim 3, characterized in that the detector (5) is a smoke detector, which is arranged at the top center and at the top edge of the heating chamber.
5. Microwave oven according to claim 4, characterized in that the shower head (4) is arranged at the top of the heating chamber, the shower head (4) and the detector (5) being arranged offset to each other.
6. A fire extinguishing method applied to a microwave oven as claimed in any one of claims 1 to 5, comprising:
the smoke detector detects a fire signal and sends the fire signal to the circuit control panel (7);
the circuit control board (7) judges that the received fire signal reaches a preset threshold value, and controls the electromagnetic valve (6) to be opened so as to control the fire extinguishing module to spray fire extinguishing materials into the heating cavity;
the circuit control board (7) judges that the received fire signal is lower than a preset threshold value, and controls the electromagnetic valve (6) to be closed so as to block the fire extinguishing module from spraying fire extinguishing materials into the heating cavity.
7. The fire extinguishing method of a microwave oven according to claim 6, comprising:
when the circuit control board (7) judges that the received fire signal reaches a preset threshold value, the circuit control board (7) cuts off an external power supply and starts a standby power supply (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711420685.5A CN108167884B (en) | 2017-12-25 | 2017-12-25 | Microwave oven and fire extinguishing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711420685.5A CN108167884B (en) | 2017-12-25 | 2017-12-25 | Microwave oven and fire extinguishing method thereof |
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| Publication Number | Publication Date |
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| CN108167884A CN108167884A (en) | 2018-06-15 |
| CN108167884B true CN108167884B (en) | 2020-06-30 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11118153A (en) * | 1997-10-20 | 1999-04-30 | Paloma Ind Ltd | Automatic fire extinguishing device for heating cooking apparatus |
| KR20150073502A (en) * | 2013-12-23 | 2015-07-01 | 동부대우전자 주식회사 | Microwave oven and control method |
| CN106895452A (en) * | 2017-03-22 | 2017-06-27 | 北京小米移动软件有限公司 | Micro-wave oven method for heating and controlling and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10104320A1 (en) * | 2001-01-25 | 2002-08-01 | Univ Schiller Jena | Device for performing safety functions in rooms with high-frequency radiation |
-
2017
- 2017-12-25 CN CN201711420685.5A patent/CN108167884B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11118153A (en) * | 1997-10-20 | 1999-04-30 | Paloma Ind Ltd | Automatic fire extinguishing device for heating cooking apparatus |
| KR20150073502A (en) * | 2013-12-23 | 2015-07-01 | 동부대우전자 주식회사 | Microwave oven and control method |
| CN106895452A (en) * | 2017-03-22 | 2017-06-27 | 北京小米移动软件有限公司 | Micro-wave oven method for heating and controlling and device |
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| Publication number | Publication date |
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| CN108167884A (en) | 2018-06-15 |
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