CN106839007A - Dry heating preventing alarm device - Google Patents

Abstract

The invention discloses a kind of dry heating preventing alarm device, including controller, infrared sensor, steam detector, gas security, wireless communication module, timer, valve and Control drive circuit, loudspeaker and power supply adaptor.Pan temperature change during using infrared sensor, steam detector to hotting plate and whether there is steam and carry out detection analysis, judge whether that water in dry combustion method or pot occur overflows, gas security can recognize gas-tight, communication is carried out with remote equipment such as mobile phone by loudspeaker or wireless communication module and sends reminding alarm, remind whether cooking time arrives a little by timer simultaneously, coordinate valve to be exported with Control drive circuit and close pan firepower to external relay or electronic valve.So as to the accident for avoiding dry combustion method, spilling water, gas leakage from causing occurs, to inside, common grill pan tool and gas cooker without functions such as timing, temperature controls increased function of safety protection.

Description

Dry heating preventing alarm device

Technical field

The device for being used to hot plate safety prompt function and alarm is placed on before kitchen range the present invention relates to a kind of, especially prevents from steaming There is the alarm of dry combustion method in cooking food.

Background technology

People often encounter when being cooked and being cooked using gas-cooker and kitchen appliance and are too busy to do it or leave kitchen and forget Fire or the electric power closed on pot and stove, time for boiling is oversize to cause food to overdo too rotten or dry combustion method, when not noticed for gas-cooker The soup spill that may be allowed in pot has buried in oblivion flame, the generation for causing gas leakage etc. dangerous, and dry combustion method can cause kitchen range to damage It is bad danger even occur.In order to prevent such unexpected generation, as some electric cookers, electric steamer increased burning prevention function and determine When closing function, using temperature-sensitive element in dry combustion method cooking bottom temperature increase triggers circuit disconnect or timing power off, but this A little functions can only be limited in the electrical equipment pan, for ordinary pan, be especially for use in pan above gas-cooker just without timing, The functions such as anti-dry, waterproof spilling, and exactly there is firepower using gas cooking can not automatically adjust greatly, easily cause dry combustion method Or water overflow etc. phenomenon.

The content of the invention

Easily cause that water in pot is overflowed and food dry combustion method is asked when cooking and cooking using common pan to solve people Topic, the present invention will be provided when spilling water and dry combustion method occurs in a kind of any pan that can be to using in cooking process can all be made Go out the alarm of the measures such as prompting.

The technical solution adopted by the present invention is：One is positioned over pot and stove side and isolates one section of anti-dry report in space with pan Alert device, by controller, infrared sensor, two steam detectors, gas security, wireless communication module, timer, valve with Control drive circuit, loudspeaker and power supply adaptor composition；Wherein steam detector has two namely for pot top The Vapor detection in face and the Vapor detection of pot bottom, are respectively made up of the photodiode array of the optical lens of front end, rear end Sensor devices, the luminous tube of the outside irradiation light in front end and conversion output circuit are constituted, and the optical lens of front end is regarded for limitation Angle and focusing, the steam produced on pot when the light that luminous tube sends is used to irradiate boiling can be obtained significantly by sensor devices Steam image, to covering edge to pot top surface visual angle, the steam detector of pot bottom is to pot for the steam detector of pot top surface Bottom, detects to relevant position with the presence or absence of the steam for evaporating respectively, is sent out when pot top surface or pot bottom have steam to emerge Generation is bright reflective when the light of light pipe irradiates, and the steam for flowing up will be formed in pot top surface or pot bottom steam detector Image becomes the converted output circuit output of electric signal；The optical system visual angle of infrared sensor to the top surface to pot, to pot top Face temperature is measured；The circuit connecting relation of above device is that the thermal information input of controller connects infrared sensor, two The conversion output circuit of the steam detector of individual steam information input terminal connection pot top surface and pot bottom, the gas component of controller Information input terminal connects gas security, the data output end connection wireless communication module of controller, timer connection controller Timing signal input end, loudspeaker connects the audio output of controller, and valve is connected control with Control drive circuit The Electromechanical Control output end of device processed, more than power adapter voltage output connection each device circuitry.When pot top surface has steam Illustrate in pot in normal cooking food, and bottom has steam then to represent the water in pot to spill on pot and stove to be evaporated.And infrared biography Sensor measures temperature and change using the heat radiation of pot face, and electric signal is transmitted to controller analysis, has enough moisture content normal in pot Temperature not more than certain value in pot face when hotting plate, and demonstrate,proved when temperature is higher than certain value and pot face steam is reduced even without steam Water shortage will enter dry-fire condition in bright pot.Also information is passed when gas security measures the gas leakages such as coal gas or liquefied gas It is defeated by controller.Timer sends timing information when being used to set manually culinary art reminder time to point.The information that the above is detected And timing information sends prompting, alarm or shutdown signal into controller analyzing and processing, mode is warned including loudspeaker sound Reporting and being sent to by radio carries out remote-end alarm in the equipment such as mobile phone, while can also be driven by valve and Control The circuit control electronic valve device being attached on burnt gas valve or the grill pan tool for being connected with relay make closing motion.

The beneficial effects of the invention are as follows：Alarm need not be arranged on above pot or internal, gas-cooker also can with ordinary pan With anti-dry and water overflow alarm and cooking timing prompting function, it is to avoid vegetable edible boils and badly wastes and cause gas leakage or dry The danger of burning.

Brief description of the drawings

With reference to embodiment and accompanying drawing, the invention will be further described.

Fig. 1 is the present embodiment external structure and use schematic diagram.

Fig. 2 is circuitry block schematic diagram of the invention.

Specific embodiment

As shown in figure 1, merely just using gas-cooker pan as embodiment, for the use principle also phase of electrical equipment pan Together.On the kitchen sink, dry heating preventing alarm device support 1 is installed on wall 4, with gas burning pot stove 5 and pot 6 at a distance of one section tens centimetres Distance, is in the back upper place of pot 6, and support 1 has the infrared sensor 2 of cylindrical housing, two steamings of pot top surface and pot bottom above Vapor detector 3 is arranged by upper, middle and lower position, is fixed before it by respective chain extension bar 10, and there is rotating shaft the front and back end of chain extension bar 10 It is linked to so that infrared sensor 2, steam detector 3 can be with adjustable visual angle degree.About 30 degree allowed inside infrared sensor 2 are regarded The optical system of angular region is directed at the pot cover top surface of pot 6.It is in the horizontal pendulum of pot top surface steam detector 3 in the centre position of support 1 Put, about 45 degree of internal visual angle optical lens are to the top of pot 6, being arranged in one 40 of the preceding lower end of steam detector 3 The light that five degree of LEDs of illumination angle 33 send is emitted onto the whole pot cover edge of surface radiation on pot 6.And it is in support 1 The pot bottom steam detector 3 of lowermost position is overlooked towards pot 6 and inclined, and internal about 45 degree of visual angle optical lens are to pot 6 bottom, the light that 45 degree of illumination angle LEDs 33 of preceding lower end send is emitted onto the bottom pot and stove 5 of pot 6 Above.A pot soup that is upper or overflowing flows to the bottom of a pan and is allowed to the steam of generation on pot and stove 5 when luminous tube 33 is used to irradiate boiling Generation is bright reflective, allows the sensor devices of steam detector 3 to obtain obvious steam signal of video signal.There is a hand on support 1 On dynamic rotary-switch timer 14 plate forward-mounted, startup timer 14 is efficiently and easily rotated during for cooking and is worked. The internal structure principle of above infrared sensor 2 is not illustrated here compared with technology.

Circuit catenation principle of the invention is as shown in Figure 2.Dry heating preventing alarm device is by controller 11, infrared sensor 2, two Steam detector 3, gas security 12, blue tooth wireless communication module 13, manual rotary switch formula timer 14, valve and relay Device control drive circuit 15, loudspeaker 17 and power supply adaptor 16 are constituted.Two steam detectors therein are directed to pot respectively The steam detector 3 of top surface and the steam detector 3 for pot bottom, circuit structure include sensor devices 31, conversion output electricity Road 32 and LED 33, the wherein line such as data of sensor devices 31 are connected on conversion output circuit 32, LED 33 Two positive and negative electrodes be connected to conversion output circuit 32 voltage end.More than the circuit connecting relation of each device be, controller 11 thermal information input connection infrared sensor 2, two steam information input terminal connection pot top surfaces are visited with the steam of pot bottom The conversion output circuit 32 of device 3 is surveyed, the gas component information input terminal of controller 11 connects gas security 12, controller 11 Data output end connects wireless communication module 13, and timer 14 connects the timing signal input end of controller 11, and loudspeaker 17 connects The audio output of controller 11 is connect, valve is connected the machine of controller 11 with the control signal of Control drive circuit 15 Electric control output end, and valve be connected with one group of two groups of control output ends of Control drive circuit 15 outside after Electrical equipment 18 is used for the power supply of device for switching pan, and the output end of relay 18 can connect a socket, the power supply of electrical equipment pan Plug is inserted in controlled on the socket, and another group of control output end connects an external electrical valve 19 is used for automatic gas burner Valve closure, the voltage output of power supply adaptor 16 connection more than each device circuitry voltage end.Can be with by cell phone software The controller 11 of wireless connection the present embodiment, carries out some necessary function settings, and whether such as timer closes pot and stove when time is up Firepower.The dry combustion method, water that are detected are overflowed the information input controllers 11 such as pot, gas leakage, timing and analyzed and processed by above circuit Can be pointed out by loudspeaker alarm or prompting or alarm signal are sent to mobile phone by blue tooth wireless communication, realize that people leaves kitchen Room can also look after pot and stove.

Claims (1)

1. a kind of dry heating preventing alarm device, including thermoelectric sensing device, control circuit, power supply adaptor, it is characterized in that：Anti-dry report Alert device is positioned over pot and stove（5）Side and pan（6）One section of space of isolation, by controller（11）, infrared sensor（2）, pot top surface With two steam detectors of pot bottom（3）, gas security（12）, wireless communication module（13）, timer（14）, valve with after Electrical equipment control drive circuit（15）, loudspeaker（17）And power supply adaptor（16）Composition, steam detector by front end optical frames The sensor devices of head, the photodiode array composition of rear end（31）, front end luminous tube（33）With conversion output circuit（32） Constitute, the steam detector of pot top surface（3）Visual angle is to pot（6）Top surface, the steam detector of pot bottom（3）Visual angle is to pot （6）Bottom, infrared sensor（2）Visual angle to pot（6）Top surface, controller（11）Thermal information input connection infrared sensing Device（2）, the steam detector of two steam information input terminals connection pot top surfaces and pot bottom（3）Conversion output circuit（32）, Controller（11）Gas component information input terminal connection gas security（12）, controller（11）Data output end connection nothing Line communication module（13）, timer（14）Connection controller（11）Timing signal input end, loudspeaker（17）Connection controller （11）Audio output, valve and Control drive circuit（15）Connection controller（11）Electromechanical Control output end, Power supply adaptor（16）More than voltage output connection each device circuitry.