CN211560643U - Resistance type explosion-proof device of hand warmer - Google Patents
Resistance type explosion-proof device of hand warmer Download PDFInfo
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- CN211560643U CN211560643U CN201922040320.0U CN201922040320U CN211560643U CN 211560643 U CN211560643 U CN 211560643U CN 201922040320 U CN201922040320 U CN 201922040320U CN 211560643 U CN211560643 U CN 211560643U
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Abstract
The utility model particularly relates to a hand warmer resistance-type explosion-proof equipment, including the bag body, wherein: the internal mount pad and the heat-generating body of being equipped with of bag, the fixed surface of the bag body has detection circuitry, installs first probe, second probe and heating control circuit in the mount pad, and detection circuitry is connected with heating control circuit, and detection circuitry still is equipped with first probe and second probe, and the heat-generating body is connected with heating control circuit, and first probe and second probe one end extend outside the mount pad. The utility model has the advantages that: this structure uses through detection circuitry, first probe, second probe and heating control circuit's combination, can play the protection that prevents to appear warming hand ware internal gas pressure too high and lack water dry combustion method in the circular telegram in-process to hand ware, and in addition, the tilt switch of this structure can prevent again to heat the circular telegram when the hand ware gesture is unusual and take place the potential safety hazard.
Description
Technical Field
The utility model particularly relates to a hand warmer resistance-type explosion-proof equipment.
Background
At present, most of heat storage media of flexible hand warmers in the market are water, the principle is that electric energy is converted into heat energy, the heat energy is stored in the heat storage media (water) and then is naturally released, in order to prevent overhigh air pressure in the hand warmer in the power-on process, a plurality of mechanical devices (commonly called as explosion-proof clamps) are generally arranged for realizing the heat storage, the mode is extremely simple, the accuracy is low, and in addition, no water or little water is used for power-on protection, explosion and dry burning easily occur; in addition, other safety accidents are very likely to occur when the hand warmer is electrified when the posture is abnormal. The circuit is designed to solve the above problems in the following aspects.
Disclosure of Invention
An object of the utility model is to overcome the not enough of above-mentioned prior art, provide a hand warmer resistance-type explosion-proof equipment who uses very conveniently, can prevent hand warmer explosion, dry combustion method, circular telegram when the gesture is unusual.
The utility model discloses a hand warmer resistance-type explosion-proof equipment of description, including the bag body, wherein: the internal mount pad and the heat-generating body of being equipped with of bag, the fixed surface of the bag body has detection circuitry, installs first probe, second probe and heating control circuit in the mount pad, and detection circuitry is connected with heating control circuit, and detection circuitry still is equipped with first probe and second probe, and the heat-generating body is connected with heating control circuit, and first probe and second probe one end extend outside the mount pad.
The prompting circuit comprises a fourth diode D4, an eleventh resistor R11, a first light-emitting lamp G, a fifth diode D5, a second light-emitting lamp R and a twelfth resistor R12, the fourth diode D4, the eleventh resistor R11 and the first light-emitting lamp G are sequentially connected in series, the fifth diode D5 and the second light-emitting lamp R are connected in series, and a common end between the first light-emitting lamp G and the second light-emitting lamp R is connected to one end of the twelfth resistor R12.
The detection circuit specifically further comprises a switching power supply circuit 1, wherein the switching power supply circuit 1 is connected with the detection circuit 3.
Specifically, the switching power supply circuit includes a half-wave rectifier diode D1, a filter capacitor C1, a voltage filter capacitor C2, an output current adjusting resistor R1, a first output voltage adjusting resistor R2, a second output voltage adjusting resistor R3, a switching power supply management chip IC, a transformer T, a rectifier diode D2, an auxiliary filter capacitor C3 and a load resistor R4, a half-wave rectifier diode D1 and a filter capacitor C1 are connected, a common terminal of the half-wave rectifier diode D1 and the filter capacitor C1 is connected to the switching power supply management chip IC, a voltage filter capacitor C2 is connected to the switching power supply management chip IC, a voltage filter capacitor C2 is connected to the output current adjusting resistor R1, a first output voltage adjusting resistor R2 and a second output voltage adjusting resistor R3 are connected in series, and a common terminal of the first output voltage adjusting resistor R2 and the second output voltage adjusting resistor 539r 3 is connected to the switching power supply management chip IC, the other ends of the first output voltage adjusting resistor R2 and the second output voltage adjusting resistor R3 are respectively connected with the input end of the transformer T, the output end of the transformer T is connected with the rectifying diode D2, the other end of the rectifying diode D2 is connected with the common end of the filter capacitor C3 and the dummy load resistor R4, and the other end of the transformer T is connected with the other common end of the filter capacitor C3 and the dummy load resistor R4.
Specifically, the detection circuit includes a liquid resistance detection transistor Q1, a fifth resistor R5, a sixth resistor R6, a fifth capacitor C5, a seventh resistor R7, a ninth resistor R9, a tilt switch K1, an eighth resistor R8, a tenth resistor R10, a second amplification transistor Q2, a third amplification transistor Q3, a sixth capacitor C6, a third diode D3, and a relay JQ, the second probe 302, the fifth resistor R3, and the sixth resistor R3 are connected in series in turn, a common terminal of the fifth resistor R3 and the sixth resistor R3 is connected to a base of the liquid resistance detection transistor Q3, the first probe 301 is connected to a collector of the liquid resistance detection transistor Q3, the sixth resistor R3 is connected in parallel to the fifth capacitor C3, the seventh resistor R3 is connected to an emitter of the liquid resistance detection transistor Q3, the ninth resistor R3, the sixth resistor R3, the tilt switch K3 and the sixth capacitor C3 are connected in turn to the tenth capacitor C3, one end of a tenth resistor R10 is connected with the second amplifying triode Q2, the collector of the second amplifying triode Q2 is connected with the emitter of the liquid resistor detection triode Q1 through an eighth resistor R8, the eighth resistor R8 is also connected with the base of a third amplifying triode Q3, a third diode D3 and a relay JQ are connected in parallel, and the common end of the third diode D3 and the relay JQ is connected with the collector of the third amplifying triode Q3;
the heating control circuit 4 comprises a normally open contact JK, a temperature controller K2 and a fuse K3. Normally open contact JK, temperature controller K2 and fuse K3 link gradually, and fuse K3 one end is connected with heating element 401, relay JQ control normally open contact JK.
The utility model has the advantages that: this structure uses through detection circuitry, first probe, second probe and heating control circuit's combination, can play the protection that prevents to appear warming hand ware internal gas pressure too high and lack water dry combustion method in the circular telegram in-process to hand ware, and in addition, the tilt switch of this structure can prevent again to heat the circular telegram when the hand ware gesture is unusual and take place the potential safety hazard.
Drawings
Fig. 1 is a circuit diagram of the switching power supply of the present invention.
Fig. 2 is a connection diagram of the detection circuit and the heating control circuit of the present invention.
Fig. 3 is a circuit diagram of the present invention.
Fig. 4 is a schematic view of the structure of the usage state of the present invention.
The following figures are diagrammatic illustrations:
the heating device comprises a switching power supply circuit 1, a bag body 2, a detection circuit 3, a first probe 301, a second probe 302, a heating control circuit 4, a heating body 401, a prompting circuit 5 and a mounting seat 6.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1 to 4, the utility model discloses a hand warmer resistance type explosion-proof device, including the bag body 2, wherein: the bag body 2 is internally provided with a mounting seat 6 and a heating body 401, the surface of the bag body 2 is fixed with a detection circuit 3, the mounting seat 6 is internally provided with a first probe 301, a second probe 302 and a heating control circuit 4, the detection circuit 3 is connected with the heating control circuit 4, the detection circuit 3 is also provided with the first probe 301 and the second probe 302, the heating body 401 is connected with the heating control circuit 4, and one end of the first probe 301 and one end of the second probe 302 extend out of the mounting seat 6. The mounting seat 6 is used for sealing the heating control circuit 4, the first probe 301 and the second probe 302, and has a function of preventing leakage, the heating body 401 is fixed on the surface of the mounting seat 6 and is connected with the heating control circuit 4 by adopting an electric wire, and the electric wire has heat resistance and waterproof effects. Or the heating element 401 is connected with the mounting seat 6 through a waterproof pipe, and the electric wire is mounted in the waterproof pipe.
There is certain interval or discrepancy in elevation between first probe 301, the second probe 302 of this structural installation, first probe 301, second probe 302 when normal condition with heat-retaining medium (water) contact in the hand warmer, circuit switch-on shaping return circuit when first probe 301 and second probe 302 contact water simultaneously, relay JQ work, relay JQ control normally open contact JK is closed to allow the heating, circuit disconnection cuts off the return circuit when first probe 301 and second probe 302 leave water or arbitrary probe leaves water simultaneously, relay JQ is out of work, normally open contact JK is opened and is stopped the heating. The principle of the structure for realizing the function is as follows: the heat storage medium (water) in the bag body 2 has a certain resistance value, and the first probe 301 and the second probe 302 are connected or disconnected by using the water as a conductor to control the relay JQ, so that the functions are realized.
The prompting circuit 5 comprises a fourth diode D4, an eleventh resistor R11, a first light-emitting lamp G, a fifth diode D5, a second light-emitting lamp R and a twelfth resistor R12, the fourth diode D4, the eleventh resistor R11 and the first light-emitting lamp G are sequentially connected in series, the fifth diode D5 and the second light-emitting lamp R are connected in series, and a common end between the first light-emitting lamp G and the second light-emitting lamp R is connected to one end of the twelfth resistor R12. Wherein, when heating, the second light-emitting lamp R is normally on, and when stopping heating, the second light-emitting lamp R is turned off and is switched to be normally on by the first light-emitting lamp G.
The bag body 2 further comprises a switching power supply circuit 1, and the switching power supply circuit 1 is connected with the detection circuit 3. The switching power supply circuit 1 supplies power to the detection circuit 3.
The switching power supply circuit 1 comprises a half-wave rectifier diode D1, a filter capacitor C1, a filter capacitor C2, an output current adjusting resistor R1, a first output voltage adjusting resistor R2, a second output voltage adjusting resistor R3, a switching power supply management chip IC, a transformer T, a rectifier diode D2, a filter capacitor C3 and a dummy load resistor R4, a half-wave rectifier diode D1 and the filter capacitor C1 are connected, the common end of the half-wave rectifier diode D1 and the filter capacitor C1 is connected with the switching power supply management chip IC, a filter capacitor C2 is connected with the switching power supply management chip IC, a filter capacitor C2 is connected with the output current adjusting resistor R1, a first output voltage adjusting resistor R2 and a second output voltage adjusting resistor R3 are connected in series, and the common end of the first output voltage adjusting resistor R2 and the second output voltage adjusting resistor R3 is connected with the switching power supply management chip IC, the other ends of the first output voltage adjusting resistor R2 and the second output voltage adjusting resistor R3 are respectively connected with the input end of the transformer T, the output end of the transformer T is connected with the rectifying diode D2, the other end of the rectifying diode D2 is connected with the common end of the filter capacitor C3 and the dummy load resistor R4, and the other end of the transformer T is connected with the other common end of the filter capacitor C3 and the dummy load resistor R4.
The detection circuit 3 comprises a liquid resistance detection triode Q1, a fifth resistor R5, a sixth resistor R6, a fifth capacitor C5, a seventh resistor R7, a ninth resistor R9, a tilt switch K1, an eighth resistor R8, a tenth resistor R10, a second amplification triode Q2, a third amplification triode Q3, a sixth capacitor C6, a third diode D3 and a relay JQ, a second probe 302, a fifth resistor R3 and a sixth resistor R3 are sequentially connected in series, a common end of the fifth resistor R3 and the sixth resistor R3 is connected to a base of the liquid resistance detection triode Q3, a first probe 301 is connected to a collector of the liquid resistance detection triode Q3, the sixth resistor R3 is connected to the fifth capacitor C3 in parallel, the seventh resistor R3 is connected to an emitter of the liquid resistance detection triode Q3, the ninth resistor R3, the tilt switch K3, the sixth capacitor C3 and the tenth capacitor C3 are sequentially connected to the common end of the tilt switch R3, one end of a tenth resistor R10 is connected with the second amplifying triode Q2, the collector of the second amplifying triode Q2 is connected with the emitter of the liquid resistor detection triode Q1 through an eighth resistor R8, the eighth resistor R8 is also connected with the base of a third amplifying triode Q3, a third diode D3 and a relay JQ are connected in parallel, and the common end of the third diode D3 and the relay JQ is connected with the collector of the third amplifying triode Q3;
the liquid resistance detection triode Q1 is connected with the second probe 302, when the first probe 301 and the second probe 302 are contacted with water at the same time, due to the existence of the liquid resistance, the liquid resistance detection triode Q1 obtains positive bias to voltage through a fifth resistor R5, the liquid resistance detection triode Q1 is conducted, VCC voltage is conducted from an eighth resistor R8 to a base of a third amplification triode Q3, the third amplification triode Q3 is conducted, a relay JQ is attracted, the heating control circuit 4 is electrically heated, and when any one of the first probe 301 and the second probe 302 is heated and leaves the water, the heating is stopped; the sixth resistor R6 is a liquid resistor detecting transistor Q1, the base of which is biased to a resistor, the fifth capacitor C5 is a shaking phenomenon generated when the first probe 301 and the second probe 302 contact water and also used for filtering interference noise, when the liquid resistor detecting transistor Q1 is conducted, VCC voltage is established to enable the base of the third amplifying transistor Q3 to be biased positively to a voltage, and the third amplifying transistor Q3 is conducted to drive the relay JQ.
The detection circuit 3 is additionally provided with an inclination switch K1, when the inclination angle of the inclination switch K1 is over set at a horizontal 360-degree radius downward inclination angle, the inclination switch is switched on (namely the bag body 2 has a certain inclination angle), VCC voltage charges a sixth capacitor C6 through a ninth resistor R9, when the inclination switch is charged to more than 0.7V, the voltage is added to the base of a second amplifying triode Q2 through a tenth resistor R10, the second amplifying triode Q2 is switched on, after the second amplifying triode Q2 is switched on, the base voltage of the third amplifying triode Q3 becomes 0V, the third amplifying triode Q3 is switched off to close a relay JQ, and a normally open contact JK in the heating control circuit 4 is switched off, so that the inclined heating protection function is realized.
When the transformer T works, the switching power supply management chip IC drives the transformer T, the secondary side of the transformer T outputs corresponding voltage, the voltage is rectified by the rectifying diode D2 and filtered by the filter capacitor C3, and finally the voltage passes through the dummy load resistor R4, so that stable safe extra-low voltage VCC is obtained. The model of the switching power supply management chip IC is IC-PS 1202.
The heating control circuit 4 comprises a normally open contact JK, a temperature controller K2 and a fuse K3. Normally open contact JK, temperature controller K2 and fuse K3 link gradually, and fuse K3 one end is connected with heating element 401, relay JQ control normally open contact JK.
The present invention is not limited to the above preferred embodiments, but rather, any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a hand warmer resistance-type explosion-proof equipment, includes bag body (2), its characterized in that: be equipped with mount pad (6) and heat-generating body (401) in the bag body (2), the fixed surface of the bag body (2) has detection circuitry (3), install first probe (301) in mount pad (6), second probe (302) and heating control circuit (4), detection circuitry (3) are connected with heating control circuit (4), detection circuitry (3) still are equipped with first probe (301) and second probe (302), heat-generating body (401) are connected with heating control circuit (4), first probe (301) and second probe (302) one end extend to outside mount pad (6).
2. The resistive explosion prevention apparatus for a hand warmer of claim 1, wherein: also comprises a prompt circuit (5).
3. The resistive explosion prevention apparatus for a hand warmer of claim 2, wherein: the prompting circuit (5) comprises a fourth diode D4, an eleventh resistor R11, a first light-emitting lamp G, a fifth diode D5, a second light-emitting lamp R and a twelfth resistor R12, the fourth diode D4, the eleventh resistor R11 and the first light-emitting lamp G are sequentially connected in series, the fifth diode D5 and the second light-emitting lamp R are connected in series, and a common end between the first light-emitting lamp G and the second light-emitting lamp R is connected to one end of the twelfth resistor R12.
4. The resistive explosion prevention apparatus for a hand warmer of claim 1, wherein: the detection circuit also comprises a switch power supply circuit (1), wherein the switch power supply circuit (1) is connected with the detection circuit (3).
5. The resistive explosion prevention apparatus for a hand warmer of claim 4, wherein: the switching power supply circuit (1) comprises a half-wave rectifier diode D1, a filter capacitor C1, a filter capacitor C2, an output current adjusting resistor R1, a first output voltage adjusting resistor R2, a second output voltage adjusting resistor R3, a switching power supply management chip IC, a transformer T, a rectifier diode D2, a filter capacitor C3 and a dummy load resistor R4; the half-wave rectifier diode D1 is connected with the filter capacitor C1, a common end of the half-wave rectifier diode D1 and the filter capacitor C1 is connected with the switching power supply management chip IC, the filter capacitor C2 is connected with the switching power supply management chip IC, the filter capacitor C2 is connected with the output current adjusting resistor R1, the first output voltage adjusting resistor R2 and the second output voltage adjusting resistor R3 are connected in series, a common end of the first output voltage adjusting resistor R2 and the second output voltage adjusting resistor R3 is connected with the switching power supply management chip IC, the other ends of the first output voltage adjusting resistor R2 and the second output voltage adjusting resistor R3 are respectively connected with an input end of the transformer T, an output end of the transformer T is connected with the rectifier diode D2, the other end of the rectifier diode D2 is connected with a common end of the filter capacitor C3 and the dummy load resistor R4, and the other end of the transformer T is connected with a common end of the filter capacitor C3 and.
6. The resistive explosion prevention apparatus for a hand warmer of claim 1, wherein: the detection circuit (3) comprises a liquid resistance detection triode Q1, a fifth resistor R5, a sixth resistor R6, a fifth capacitor C5, a seventh resistor R7, a ninth resistor R9, a tilt switch K1, an eighth resistor R8, a tenth resistor R10, a second amplification triode Q2, a third amplification triode Q3, a sixth capacitor C6, a third diode D3 and a relay JQ, a second probe 302, a fifth resistor R3 and a sixth resistor R3 are sequentially connected in series, a common end of the fifth resistor R3 and the sixth resistor R3 is connected to a base of the liquid resistance detection triode Q3, a first probe 301 is connected to a collector of the liquid resistance detection triode Q3, the sixth resistor R3 is connected with the fifth capacitor C3 in parallel, the seventh resistor R3 is connected with an emitter of the liquid resistance detection triode Q3, the ninth resistor R3, the tilt switch K3, the sixth capacitor C3 is connected with a tenth resistor C3, and a tenth capacitor C3 are sequentially connected with a tenth resistor R3, one end of a tenth resistor R10 is connected with the second amplifying triode Q2, the collector of the second amplifying triode Q2 is connected with the emitter of the liquid resistor detection triode Q1 through an eighth resistor R8, the eighth resistor R8 is also connected with the base of a third amplifying triode Q3, a third diode D3 and a relay JQ are connected in parallel, and the common end of the third diode D3 and the relay JQ is connected with the collector of the third amplifying triode Q3; the heating control circuit (4) comprises a normally open contact JK, a temperature controller K2 and a fuse K3; normally open contact JK, temperature controller K2 and fuse K3 link gradually, and fuse K3 one end is connected with heating element 401, relay JQ control normally open contact JK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922040320.0U CN211560643U (en) | 2019-11-23 | 2019-11-23 | Resistance type explosion-proof device of hand warmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922040320.0U CN211560643U (en) | 2019-11-23 | 2019-11-23 | Resistance type explosion-proof device of hand warmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211560643U true CN211560643U (en) | 2020-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922040320.0U Active CN211560643U (en) | 2019-11-23 | 2019-11-23 | Resistance type explosion-proof device of hand warmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211560643U (en) |
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2019
- 2019-11-23 CN CN201922040320.0U patent/CN211560643U/en active Active
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