Can automatically power off, the method for work of the heating fan of fire-proof
Technical field
The present invention relates to a kind of heating fan, particularly a kind of heating fan of fire-proof, belong to household electrical appliances design field.
Background technology
Heating fan in use, can be covered accidentally by the combustibles of surrounding, easily cause fire, particularly part
User likes baking clothes with heating fan, and likes clothes to be directly layered on heating fan, it is easier to cause fire.
Current heating fan lacks automatic detection its function for whether being capped, it is impossible to solve the above problems.
The content of the invention
For the problems referred to above, the purpose of the present invention is:A kind of heating fan of fire-proof is provided, its can automatic detection its be
No capped, if heating fan is capped, it can timely power-off automatically, it is therefore prevented that the generation of fire.
Solution the technical scheme is that:A kind of heating fan of fire-proof, it is by base, support bar, head-shaking motor, solid
Dead axle, heat-generating disc, flameproof enclosure, reflection disk and disc type back cover, protective cover, heat-generating disc fixing axle composition, set on the protective cover
An infrared module is equipped with, an infrared transmitting device and a Photoelectric infrared switch is provided with described infrared module,
Described infrared transmitting device and Photoelectric infrared switch is connected with power switch, as long as power switch is opened just can work;Institute
The Photoelectric infrared switch stated is connected with heat-generating disc, and Photoelectric infrared switch no current in heat-generating disc when disconnecting passes through;When warming oneself by a fire
After the protective cover of fan is capped, covering has blocked the IR that infrared transmitting device sends, and Photoelectric infrared switch is received
During less than corresponding IR, Photoelectric infrared switch is off, and will not have electric current through heat-generating disc, and heat-generating disc is not
Work, it is therefore prevented that the generation of fire.
Further, except being provided with, an infrared module is additionally provided with three speculums to described flameproof enclosure and three reflect
Mirror and infrared module are evenly distributed on the excircle of protective cover;Described infrared transmitting device and Photoelectric infrared switch are into 45
Degree angle is installed together;The IR that described infrared transmitting device sends is irradiated on speculum, tri- pieces of speculums of Jing
Be able to be irradiated on Photoelectric infrared switch after reflection.Benefit of its so design is extend that infrared transmitting device sends red
UV light expands the area coverage of infrared ray to the path between Photoelectric infrared switch, increased the sensitivity of detection.
Further, described a kind of toaster with humidification function, it uses 220V alternating currents as power supply;200V is exchanged
Power supply and Transformer Rectifier circuit connect;Transformer Rectifier circuit and mu balanced circuit connect;The output end connection power supply of mu balanced circuit is opened
Close;Power switch, other end ground connection are accessed behind one end of Photoelectric infrared switch and heat-generating disc series connection;Described infrared emitting dress
One end ground connection is put, the other end accesses power switch.
Further, one protective resistance of series connection between described Photoelectric infrared switch and power supply start;Described is infrared
Line emitter and power switch are directly connected a protective resistance.
220V alternating currents are changed into 16V alternating currents by described Transformer Rectifier circuit by transformer, then are entered by diode
Row rectification is direct current;Described mu balanced circuit carries out voltage stabilizing by chip 7812, is heat-generating disc, infrared transmitting device and infrared
Optoelectronic switch provides stable 12V dc sources.Described Transformer Rectifier circuit and mu balanced circuit, its principle is art technology
Scope known to personnel, no longer illustrates here.
Usefulness of the present invention is:A kind of heating fan of fire-proof, its can automatic detection its whether be capped, if
Heating fan is capped, and it can timely power-off automatically, it is therefore prevented that the generation of fire, at the same its have simple structure, it is easy to use,
With low cost the features such as.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the overall structure figure of the present invention.
Fig. 2 is the partial enlarged drawing of the present invention.
Fig. 3 is the front view and operation principle schematic diagram of the present invention.
Fig. 4 is the partial sectional view of the present invention.
Fig. 5 is circuit theory diagrams in the present invention.
Each label is represented successively in figure:Base(1), fixing axle(2), support bar(3), head-shaking motor(4), reflection disk and
Disc type back cover(5), infrared module(6), infrared transmitting device(6a), Photoelectric infrared switch(6b), heat-generating disc fixing axle(7)、
Flameproof enclosure(8), speculum(9), protective cover(10), heat-generating disc(11), IR(12), Transformer Rectifier circuit(13), voltage stabilizing
Circuit(14), power switch(15), protective resistance(16).
Specific embodiment
With reference to embodiments the invention will be further described with accompanying drawing, because described below is only the concrete of the invention
Embodiment, but the protection not limited to this of the present invention, change or replacement that any those skilled in the art are expected, all
It is included within the scope of the present invention.
A kind of heating fan of fire-proof, it is by base(1), support bar(3), head-shaking motor(4), fixing axle(2), heat-generating disc
(11), flameproof enclosure(8), reflection disk and disc type back cover(5), protective cover(10), heat-generating disc(11)Fixing axle(7)Composition, it is described
Protective cover(10)On be provided with an infrared module(6), described infrared module(6)On be provided with an infrared transmitting device
(6a)With a Photoelectric infrared switch(6b), described infrared transmitting device(6a)And Photoelectric infrared switch(6b)Open with power supply
Close(15)Connection, as long as power switch(15)Opening just can work;Described Photoelectric infrared switch(6b)With heat-generating disc(11)String
Connection, Photoelectric infrared switch(6b)In heat-generating disc when disconnecting(11)Interior no current passes through;When the protective cover of heating fan(10)It is coating
Gai Hou, covering has blocked infrared transmitting device(The IR for 6a) sending(12), Photoelectric infrared switch(6b)Receive not
To corresponding IR(12)When, Photoelectric infrared switch(6b)It is off, there will not be electric current through heat-generating disc
(11), heat-generating disc(11)Do not work, it is therefore prevented that the generation of fire.
Further, described flameproof enclosure(8)Except being provided with an infrared module(6)It is additionally provided with three speculums(9)
And three speculums(9)And infrared module(6)It is evenly distributed on protective cover(10)Excircle on;Described infrared emitting dress
Put(6a)And Photoelectric infrared switch(6b)It is installed together into 45 degree of angles;Described infrared transmitting device(6a)What is sent is infrared
Light(12)It is irradiated to speculum(9)On, tri- pieces of speculums of Jing(9)Photoelectric infrared switch be able to be irradiated to after reflection(6b)On.
The benefit of its so design is to extend infrared transmitting device(6a)The IR for sending(12)To Photoelectric infrared switch
(6b)Between path, expand the area coverage of infrared ray, increased the sensitivity of detection.
Further, described a kind of toaster with humidification function, it uses 220V alternating currents as power supply;200V
AC power and Transformer Rectifier circuit(13)Connection;Transformer Rectifier circuit(13)And mu balanced circuit(14)Connection;Mu balanced circuit
(14)Output end connection power switch(15);Photoelectric infrared switch(6b)One end and heat-generating disc(11)Power supply is accessed after series connection
Switch(15), other end ground connection;Described infrared transmitting device(6a)One end is grounded, and the other end accesses power switch(15).
Further, described Photoelectric infrared switch(6b)One protective resistance B of series connection and power supply start between(16b);
Described infrared transmitting device(6a)With power switch(15)Directly connect protective resistance A(16a).
Described Transformer Rectifier circuit(13)220V alternating currents are changed into by 16V alternating currents by transformer, then by two poles
Pipe carries out rectification for direct current;Described mu balanced circuit(14)Voltage stabilizing is carried out by chip 7812, is heat-generating disc(11), infrared ray send out
Injection device(6a)And Photoelectric infrared switch(6b)Stable 12V dc sources are provided.Described Transformer Rectifier circuit(13)With it is steady
Volt circuit(14), the scope that its principle is well known to those skilled in the art no longer illustrates here.