CN207166797U - Safety protective circuit and household heating electrical equipment for household heating electrical equipment - Google Patents
Safety protective circuit and household heating electrical equipment for household heating electrical equipment Download PDFInfo
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- CN207166797U CN207166797U CN201721176148.6U CN201721176148U CN207166797U CN 207166797 U CN207166797 U CN 207166797U CN 201721176148 U CN201721176148 U CN 201721176148U CN 207166797 U CN207166797 U CN 207166797U
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- electrical equipment
- household heating
- temperature
- heating electrical
- safety protective
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Abstract
The utility model embodiment provides a kind of safety protective circuit and household heating electrical equipment for household heating electrical equipment, belongs to household heating appliance field.The safety protective circuit for household heating electrical equipment includes：Temperature conditioning unit, the power interface is connected to, and is arranged close to the positions of the heater members to monitor the temperature of the heater members；Wherein, when the temperature of the detected heater members exceedes normality threshold, the temperature conditioning unit control disconnects the electric power from the power interface.Thus, the electric power access of electrical equipment complete machine is disconnected when heater members operation irregularity, so that the work of all electricity consumption branch roads (including other function branch roads) can all stop in electrical equipment, prevented heater members easily causes the risk of security incident on fire etc in the case where crossing heat anomaly.
Description
Technical field
Household heating technical field of electric appliances is the utility model is related to, more particularly to a kind of peace for household heating electrical equipment
Full protection circuit and household heating electrical equipment.
Background technology
With continuous improvement of the people to the demand of quality of the life, miscellaneous household heating electricity has been emerged on the market
Device (such as electric cooker, soy bean milk making machine etc.), heater members are configured with these household heating electrical equipment and cause these household heatings
Electrical equipment has heating function, and it can be using the heating function come hot-working food.
During family expenses heating electrical appliance works, the operation irregularity (such as temperature is too high) of heat-generating pipe is to cause family expenses to add
Thermoelectricity device sends one of the main reason for potential safety hazard such as on fire.Correspondingly, in current correlation technique in order to solve this
Problem, technical scheme as shown in Figure 1 can be typically employed, that is, heat-generating pipe and temperature controller are connected as one of circuit board
Branch road, so allow for when the temperature of heat-generating pipe exceedes normality threshold, temperature controller starts to play a protective role, that is, will add
Heater circuit is opened from the disconnecting of circuit board.
But present inventor at least exist in above-mentioned correlation technique is found during putting into practice the application it is following
Defect：When heat-generating pipe operation irregularity, the power supply that temperature controller is only disconnected heat-generating pipe branch road connects, and other circuit branch
Road and circuit board are still normal work, and user is not easy to discover and the work of household heating electrical equipment can be caused to meet expection
Working effect；And, when the temperature of heat-generating pipe is reduced to certain temperature, temperature controller can resume work again afterwards；Now
The circuit board of normal work may proceed to drive heat-generating pipe heating again, can so cause it is dangerous occur repeatedly, and electrical equipment other
Branch road also may proceed to work in the case of the heating exception, easily cause potential safety hazard on fire etc.
It should be noted that the above-mentioned description as described in presently relevant technology is only allowing the public to be more convenient for understanding the skill of the application
Art scheme, and applicant can not be represented and recognize that content described in the correlation technique is prior art.
The content of the invention
The purpose of the utility model embodiment is to provide a kind of safety protective circuit and family expenses for household heating electrical equipment
Heating electrical appliance, the household heating electrical equipment at least to solve in correlation technique are easily led in the case where heater members cross heat anomaly
Cause the technical problem of security incident on fire etc.
To achieve these goals, the utility model embodiment provides a kind of safeguard protection electricity for household heating electrical equipment
Road, heater members and power interface is provided with the household heating electrical equipment, the safety protective circuit includes：Temperature conditioning unit, connection
To the power interface, and the positions of the heater members is arranged close to monitor the temperature of the heater members；Wherein,
When the temperature of the detected heater members exceedes normality threshold, the temperature conditioning unit control disconnects to be connect from the power supply
The electric power of mouth.
Optionally, the circuit board being connected with the heater members, the temperature are additionally provided with the household heating electrical equipment
Control unit is connected between the power interface and the circuit board.
Optionally, the safety protective circuit also includes：Thermal fuse-link, be connected to the circuit board and the heater members it
Between, and it is arranged close to the position of the heater members.
Optionally, the safety protective circuit also includes：Thermistor, the circuit board is connected to, and it is described for detecting
The temperature of household heating electrical equipment local environment.
Optionally, the temperature conditioning unit includes temperature controller.
Optionally, the temperature conditioning unit includes temperature controller and thermal fuse-link.
On the other hand the utility model embodiment also provides a kind of household heating electrical equipment, including：Heater members；Power supply connects
Mouthful；The above-mentioned safety protective circuit for household heating electrical equipment.
Optionally, the household heating electrical equipment also includes：Circuit board, it is connected to the heater members, power interface and described
Safety protective circuit, and for controlling the heater members to work.
Optionally, the household heating electrical equipment also includes：Electromechanical device, the circuit board is connected to, and in the electricity
Worked under the control of road plate.
Optionally, the household heating electrical equipment is included selected from one or more of following：The mechanical, electrical meal of soy bean milk making machine, broken wall
Stew, the mechanical, electrical saucepan of warm milk.
Pass through above-mentioned technical proposal, when heater members cross heat anomaly, temperature conditioning unit can directly control cut-out pair
The power supply of household electrical appliances complete machine, branch road where the temperature controller temporarily disconnected heat-generating pipe in correlation technique is avoided, and cause generating heat
The phenomenon for the intermittent heating that heat-generating pipe works on again when pipe returns to a certain temperature；On the other hand, due in heater members
The electric power access of electrical equipment complete machine is disconnected when operation irregularity so that all electricity consumption branch roads (include other function branch in electrical equipment
Road) work can all stop, having prevented heater members cross heat anomaly in the case of and easily cause safe thing on fire etc
Therefore risk.
The further feature and advantage of the utility model embodiment will give specifically in subsequent specific embodiment part
It is bright.
Brief description of the drawings
Accompanying drawing is that the utility model embodiment is further understood for providing, and a part for constitution instruction,
With being used to explain the utility model embodiment together with following embodiment, but do not form to the utility model embodiment
Limitation.In the accompanying drawings：
Fig. 1 is the circuit connection diagram of the household heating electrical equipment of presently relevant technology；
Fig. 2 is the structural representation of the safety protective circuit for household heating electrical equipment of the embodiment of the utility model one；
Fig. 3 is the electricity of the household heating electrical equipment of the safety protective circuit shown in the application drawing 2 of the embodiment of the utility model one
Road connection diagram；
Fig. 4 is the circuit connection signal using the household heating electrical equipment of the safety protective circuit of the embodiment of the utility model one
Figure；
Fig. 5 is the circuit connection signal using the household heating electrical equipment of the safety protective circuit of the embodiment of the utility model one
Figure；
Fig. 6 is illustrated that the circuit of the household heating electrical equipment of the safety protective circuit using the embodiment of the utility model one connects
Connect schematic diagram.
Description of reference numerals
The heater members of 10 safety protective circuit 20
The temperature conditioning unit of 30 power interface 101
The motor of 40 circuit board 50
The thermal fuse-link of 102 thermistor 103
1011 temperature controllers
Embodiment
The embodiment of the utility model embodiment is described in detail below in conjunction with accompanying drawing.It should be understood that
It is specific embodiment described herein is merely to illustrate and explains the utility model embodiment, to be not limited to this reality
Use new embodiment.
Those skilled in the art of the present technique are appreciated that the wording " comprising " used in specification of the present utility model and " bag
Containing " refer to features described above, integer, step, operation, element and/or component be present, but it is not excluded that in the presence of or addition one or
Multiple other features, integer, step, operation, element, component and/or combinations thereofs.It should be understood that when we claim element quilt
When ' attach ' to another element, it can be directly connected or coupled to other elements, or there may also be intermediary element.This
Outside, " connection " used herein can include wireless connection or wireless coupling.Wording "and/or" used herein include one or
The whole or any cell of more associated list items and all combination.
The knot of the safety protective circuit for household heating electrical equipment of the embodiment of the utility model one is illustrated that referring to Fig. 2
Structure schematic diagram, safety protective circuit 10, heater members 20 and power interface 30 are included in household electrical appliance, and be appreciated that
It is that power interface 30 is used to connect power network or the part as power module thinks electric power supply to connect power network.More specifically
Ground, the safety protective circuit 10 includes temperature conditioning unit 101, and the temperature conditioning unit 101 is connected to power interface 30, in the peace
During full protection circuit 10 is laid, it should also be considered and the temperature conditioning unit 101 is laid in close to the position of heater members 20
To detect the temperature of the heater members, and temperature conditioning unit 101 is enabled to play response heater members 20 to perform temperature control
Purpose.More specifically, temperature conditioning unit 101 is configured with a normal temperature threshold value (being also protective effect temperature), so in temperature
When the temperature of heater members 20 detected by control unit 101 exceedes normal temperature threshold value, it can control disconnection from power interface
30 electric power.By the utility model embodiment, when heater members 20 cross heat anomaly, temperature conditioning unit 101 can be direct
Power supply of the control cut-out to household electrical appliances complete machine, avoids the place branch road of the temperature controller temporarily disconnected heat-generating pipe in correlation technique and leads
Cause heat-generating pipe return to below normal temperature threshold value (such as when monitoring temperature be reduced to recover passage temperature) when heat-generating pipe again
It may proceed to work and the phenomenon of intermittent heating；On the other hand, due to be disconnected when 20 operation irregularity of heater members to
The electric power access of complete machine so that the work of all circuits (including other function branch roads) can all stop in electrical equipment, prevent heating
Device 20 easily causes the risk of security incident on fire etc in the case where crossing heat anomaly.Wherein, heater members 20 can
Think any of heating pipe heater, ptc heater, silicon nitride heater, electrothermal film heater, electromagnetic heater.
As the further supplement of embodiment illustrated in fig. 2 and optimization, it is illustrated that the utility model one is implemented referring to Fig. 3
The circuit connection diagram of the household heating electrical equipment of safety protective circuit shown in the application drawing 2 of example, in the household heating electrical equipment
Including circuit board 40, the other end of wherein temperature conditioning unit 101 is additionally coupled to circuit board 40, and exemplarily, circuit board institute
Other branch roads of connection can be the branch road where motor 50；Wherein the circuit board 40 has programmable controller, relay
The elements such as device, controllable silicon, it can realize the logic control to the work heating of heater members 20 and can also realize to motor 50
Work the logic control run.
As the further supplement of embodiment illustrated in fig. 3 and optimization, it is illustrated that referring to Fig. 4 using the utility model one
The circuit connection diagram of the household heating electrical equipment of the safety protective circuit of embodiment, the safety protective circuit also include temperature-sensitive electricity
Resistance 102, the thermistor 102 be connected with circuit board 40 and can be used to detection household heating electrical equipment local environment temperature
Degree, feeds back to circuit board 40 by the ambient temperature signal afterwards.Thus, for appliance controling element (such as temperature conditioning unit 101, electricity
Road plate 40 etc.) provide and a kind of judge reference parameter so that appliance controling element can preferably make logic judgment, and control defeated
Go out and implement feedback.
As the further optimization of embodiment illustrated in fig. 4, it is illustrated that referring to Fig. 5 using the embodiment of the utility model one
Safety protective circuit household heating electrical equipment circuit connection diagram, it is disconnected that safety protective circuit wherein also includes hot melt
Body 103, the thermal fuse-link 103 and heater members 20 are connected in access circuit board 40 together, and the thermal fuse-link 103 is also set
Close to the position of heater members 20.It is irrecoverable after thermal fuse-link acts on the operation principle of thermal fuse-link
Work, it is provided with fixed protective effect temperature, and heater members exceed this temperature value, thermal fuse-link fuse to be formed open a way and
Protection circuit.In the utility model embodiment, access circuit board 40 that thermal fuse-link 103 is connected together with heater members 20,
Temperature conditioning unit 101 is connected into power supply lines, so when heater members 20 cross heat anomaly, temperature controller still can produce disconnected
Road protective effect and deenergization supply line, are stopped power supply to circuit board, motor, heat-generating pipe etc. with electric device, such temperature control
Device can protect heater members to cross heat anomaly, the power supply of and can deenergization.When the temperature of heater members 20, to be reduced to temperature controller extensive
During multiple passage temperature, power circuit normal power supply, complete machine enters holding state together, will not restart circuit board control heating
Pipe continues the operation of heating so that in the case where crossing heat anomaly, the miscellaneous part of household heating electrical equipment (such as the machine of soy bean milk making machine
Head assembly and bottle body component) will not be powered, prevent danger when complete machine heats abnormal during heating.Further, exist
In the present embodiment, when temperature controller 101 fail short circuit and heater members 20 continue abnormal work when, heater members can be caused extremely warm
Rise and continue to raise, and when the temperature reaches the fusing-off temperature of thermal fuse-link 103, thermal fuse-link 103 forms open circuit, so that hair
Branch road residing for thermal device 20 is open-circuit condition, and allows heater members 20 to stop heating work, even if now circuit board 40 and motor
50 are still normally allowing state, also heater members 20 will not be allowed to work on, thereby eliminate the potential safety hazard of overheat.
It is highly preferred that temperature conditioning unit 101 can just refer to temperature controller, and temperature conditioning unit 101 can also be reference temperature
Control device and the combination (such as combination with thermal fuse-link) of other functional modules；Exemplarily, it is illustrated that referring to Fig. 6 using this
The circuit connection diagram of the household heating electrical equipment of the safety protective circuit of the embodiment of utility model one, wherein temperature conditioning unit are temperature
Control the combination of device 1011 and thermal fuse-link 1012.Temperature controller and thermal fuse-link are all to carry out overtemperature protection to heater members to commonly use
Device, both differences are that protection temperature is different with effect, and wherein temperature controller also has fixed protection temperature value, works as heater members
During more than this temperature value, temperature controller acts and disconnects protection circuit, but temperature controller can resume work, and it sets
There is a fixed recovery temperature, and when heater element temperature is reduced to recovery temperature, temperature controller is resumed work, and circuit is again
Channel status can be come back to.In the present embodiment, temperature controller 1011 and thermal fuse-link 1012 are connected serially to power interface and connect
Enter power supply lines, so when heater members 20 cross heat anomaly, temperature controller 1011 still can produce open circuit protection effect, break
Switch power supply supply line, circuit board, motor, heater members etc. are stopped power supply with electric device, thus temperature controller 1011 can be prevented
Hair care thermal device crosses the power supply of heat anomaly and can deenergization；And when the temperature of heater members 20 is reduced to the recovery of temperature controller 1011
During passage temperature, power circuit normal power supply, complete machine enters holding state together, will not restart circuit board control heating element
Part continues the operation of heating, will not also start motor work, prevents the abnormal danger of complete machine.Further, in the present embodiment,
When temperature controller 1011 fail short circuit and heater members 20 continue abnormal work when, the overheating of heater members 20 simultaneously continues to heat,
When temperature reach thermal fuse-link fusing-off temperature when, thermal fuse-link 1012 formed open circuit and disconnect complete machine power supply so that complete machine without
Electricity, the branch road such as heater members 20 and motor are stopped, and will not produce abnormal harm.
The safety protective circuit that the utility model embodiment is provided be by temperature controller or temperature controller together with thermal fuse-link
Connect into inside complete machine power supply lines so that when heater members abnormal work, nip off the power supply of complete machine, fundamentally shut out
Absolutely probably due to the harm that heater element abnormal work is brought, is a kind of efficient, safety protective circuit with duplicate protection.
It is highly preferred that in the practical operation of the utility model embodiment, part man electrical heating appliance be present by temperature control
Device and/or thermal fuse-link are arranged near heater members, now in the technical scheme of application the utility model embodiment, no
The position of change temperature controller and thermal fuse-link is needed, and only needs the change temperature controller and hot melt illustrated such as foregoing embodiments
Disconnected annexation between body and corresponding component, operating, it is easy to be also convenient for.
On the other hand the utility model embodiment additionally provides a kind of household heating electrical equipment (not shown), household heating electricity
Device application has safety protective circuit, power interface and the heater members for household heating electrical equipment that foregoing embodiments are illustrated,
So that the household heating electrical equipment can possess effect possessed by safety protective circuit described by foregoing embodiments.It is preferred that
Ground, the household heating electrical equipment can also include circuit board and/or electromechanical device, and wherein circuit board can be used for realizing logic control
System, and electromechanical device can realize various actions (such as stirring action)；Such as the embodiment can be applied to soy bean milk making machine
In, and the soy bean milk making machine is configured with electromechanical device and causes the electromechanical device to provide motive power for soy bean milk making machine crushing system with band moving knife
Piece high speed rotating shredder food materials.It is understood that soy bean milk making machine can be only a kind of example of household heating electrical equipment, the family expenses add
Thermoelectricity device can also be soy bean milk making machine, wall-breaking machine and/or electric cooker etc..
The optional embodiment of the utility model embodiment, still, the utility model are described in detail above in association with accompanying drawing
Embodiment is not limited to the detail in above-mentioned embodiment, can in the range of the technology design of the utility model embodiment
To carry out a variety of simple variants to the technical scheme of the utility model embodiment, these simple variants belong to the utility model reality
Apply the protection domain of example.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the utility model is implemented
Example no longer separately illustrates to various combinations of possible ways.
In addition, can also be combined between a variety of embodiments of the utility model embodiment, as long as
, without prejudice to the thought of the utility model embodiment, it should equally be considered as the utility model embodiment disclosure of that for it.
Claims (10)
1. a kind of safety protective circuit for household heating electrical equipment, heater members and power supply are provided with the household heating electrical equipment
Interface, it is characterised in that the safety protective circuit includes：
Temperature conditioning unit, the power interface is connected to, and is arranged close to the positions of the heater members to monitor the hair
The temperature of thermal device；
Wherein, when the temperature of the detected heater members exceedes normality threshold, the temperature conditioning unit control disconnects certainly
The electric power of the power interface.
2. safety protective circuit according to claim 1, it is additionally provided with and the heating element in the household heating electrical equipment
The circuit board that part is connected, it is characterised in that the temperature conditioning unit is connected between the power interface and the circuit board.
3. safety protective circuit according to claim 2, it is characterised in that the safety protective circuit also includes：
Thermal fuse-link, it is connected between the circuit board and the heater members, and is arranged close to the heater members
Position.
4. safety protective circuit according to claim 2, it is characterised in that the safety protective circuit also includes：
Thermistor, the circuit board is connected to, and for detecting the temperature of the household heating electrical equipment local environment.
5. safety protective circuit according to claim 1, it is characterised in that the temperature conditioning unit includes temperature controller.
6. safety protective circuit according to claim 1, it is characterised in that the temperature conditioning unit includes temperature controller and hot melt is disconnected
Body.
A kind of 7. household heating electrical equipment, it is characterised in that including：
Heater members；
Power interface；
The safety protective circuit for household heating electrical equipment any one of claim 1-6.
8. household heating electrical equipment according to claim 7, it is characterised in that the household heating electrical equipment also includes：
Circuit board, the heater members, power interface and the safety protective circuit are connected to, and for controlling the heating element
Part works.
9. household heating electrical equipment according to claim 8, it is characterised in that the household heating electrical equipment also includes：
Electromechanical device, the circuit board is connected to, and for being worked under the control of the circuit board.
10. the household heating electrical equipment according to any one of claim 7-9, it is characterised in that the household heating electrical equipment
Comprising selected from one or more of following：Soy bean milk making machine, wall-breaking machine, electric cooker, the mechanical, electrical saucepan of warm milk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721176148.6U CN207166797U (en) | 2017-09-13 | 2017-09-13 | Safety protective circuit and household heating electrical equipment for household heating electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721176148.6U CN207166797U (en) | 2017-09-13 | 2017-09-13 | Safety protective circuit and household heating electrical equipment for household heating electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207166797U true CN207166797U (en) | 2018-03-30 |
Family
ID=61721798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721176148.6U Expired - Fee Related CN207166797U (en) | 2017-09-13 | 2017-09-13 | Safety protective circuit and household heating electrical equipment for household heating electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207166797U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038486A (en) * | 2018-08-17 | 2018-12-18 | 珠海格力电器股份有限公司 | A kind of direct current input thermal protection circuit and its control method, cooking apparatus |
| CN111351224A (en) * | 2018-12-20 | 2020-06-30 | 武汉海尔热水器有限公司 | Method for adjusting power of electric water heater and electric water heater |
| CN114690811A (en) * | 2020-12-29 | 2022-07-01 | 广东美的厨房电器制造有限公司 | Temperature control circuit and household electrical appliance |
-
2017
- 2017-09-13 CN CN201721176148.6U patent/CN207166797U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038486A (en) * | 2018-08-17 | 2018-12-18 | 珠海格力电器股份有限公司 | A kind of direct current input thermal protection circuit and its control method, cooking apparatus |
| CN111351224A (en) * | 2018-12-20 | 2020-06-30 | 武汉海尔热水器有限公司 | Method for adjusting power of electric water heater and electric water heater |
| CN114690811A (en) * | 2020-12-29 | 2022-07-01 | 广东美的厨房电器制造有限公司 | Temperature control circuit and household electrical appliance |
| CN114690811B (en) * | 2020-12-29 | 2024-04-19 | 广东美的厨房电器制造有限公司 | Temperature control circuit and household appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180330 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |