CN102931636B - Manually-reset overload overtemperature early-warning protection device - Google Patents
Manually-reset overload overtemperature early-warning protection device Download PDFInfo
- Publication number
- CN102931636B CN102931636B CN201210414848.XA CN201210414848A CN102931636B CN 102931636 B CN102931636 B CN 102931636B CN 201210414848 A CN201210414848 A CN 201210414848A CN 102931636 B CN102931636 B CN 102931636B
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- overload
- reset
- load
- pedestal
- ptc
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
Abstract
The invention relates to a manually-reset overload overtemperature early-warning protection device, which comprises a temperature control unit (10) for carrying out early-warning when a load is overtemperature, a manual poweroff resetting protection unit (20) for automatically powering off a load circuit when the load is overload and overtemperature, and a step-down rectification unit (30), wherein the input end and the output end of the temperature control unit (10) are respectively connected with an AC power supply and the step-down rectification unit (30), and the input end and the output end of the manual poweroff resetting protection unit (20) are respectively connected with the AC power supply and the load. The manually-reset overload overtemperature early-warning protection device has the capability of sending an early-warning signal when being overload and overtemperature so as to be overhauled in advance and eliminate fault points. Meanwhile, because manual resetting is needed, the manually-reset overload overtemperature early-warning protection device can ensure that reasons or fault points causing turnoff of a circuit are removed, and then resetting can be realized; and due to adoption of dual protection, the manually-reset overload overtemperature early-warning protection device can effectively ensure the using safety of power utilization equipment.
Description
[technical field]
The present invention relates to the overload overtemperature protection device of electrical equipment, particularly relate to a kind of overload overheating warning protective device having the hand-reset of overload overheating warning and hand-reset protection concurrently.
[background technology]
Various electric type equipment is used in people's life.People not only pay close attention to the using function of equipment when using electric equipment, and more pay close attention to the safety in utilization of equipment.Due to the components and parts of power consumption equipment or electronic circuit produce fault time, can equipment heating be caused, when temperature exceedes normal value, can equipment fault be caused, thus affect the normal use of equipment.For this reason, general electrical equipment or electronic equipment are equipped with temperature switch or thermostat, to make the deenergization when device temperature exceedes normal value, and proterctive equipment safety.But; existing electrical equipment or electronic equipment are only provided with overload overheat protector temperature switch or the thermostat of simple function usually; such devices is due to without warning function and manual power-off restoration function; people are made to learn in advance and to eliminate potential faults; and some equipment automatically resets not eliminating in potential faults situation, thus exist again fault may and potential safety hazard.
[summary of the invention]
The present invention is intended to solve the problem, and provides a kind of and can send early warning signal to the overload excess temperature of power consumption equipment, to eliminate fault point in advance, and is confirming the overload overheating warning protective device of hand-reset of hand-reset under fault has eliminated prerequisite.
For achieving the above object; the invention provides a kind of overload overheating warning protective device of hand-reset; the manual power-off restoration protected location of automatic disconnecting consumers circuit and step-down rectifier unit this device carries out temperature conditioning unit, the load overload overtemperature of early warning when comprising load overtemperature time; wherein; the input of described temperature conditioning unit is connected with AC power and step-down rectifier unit respectively with output; the input of described manual power-off restoration protected location is connected with AC power and load respectively with output, and
Described temperature conditioning unit sends sound, light early warning signal when load exceedes design temperature, when load temperature recovers normal, early warning is removed; Manual power-off restoration protected location is automatic disconnecting consumers circuit when load overload overtemperature, after load circuit disconnects, only has manual deenergization that manual power-off restoration protected location just can be made to recover conducting.
Temperature conditioning unit comprise thermostat and be connected with step-down rectifier unit light-emitting diode D2, buzzer or its combine.
Described thermostat is open type thermostat, and its temperature measurement range is 20 DEG C ~ 150 DEG C.Preferably, this temperature conditioning unit is Kick type temperature controller, and its temperature measurement range is 20 DEG C ~ 150 DEG C.
Manual power-off restoration protected location comprises pedestal, metal thermal sensitive piece, fixed contact, moving contact, insulating trip, electric connecting sheet, PTC fever tablet, PTC stator and sleeve pipe, wherein, one end of described metal thermal sensitive piece is fixed on inside pedestal, the other end of metal thermal sensitive piece is free end, moving contact is provided with at the free end of metal thermal sensitive piece, described electric connecting sheet is located at the top of pedestal, position corresponding with described moving contact on it is provided with fixed contact, PTC fever tablet is provided with on electric connecting sheet top, PTC fever tablet is fixed by PTC stator, and PTC stator is connected with pedestal, described PTC stator and being separated by insulating trip between pedestal and electric connecting sheet, casing pipe sleeve is in the outside of pedestal and PTC stator.
Pedestal is U-shaped metal channel-shaped body, and its end, one end is provided with outward extending electric connection terminal.
Pedestal inside bottom is fixed in one end of metal thermal sensitive piece, is provided with moving contact on the upside of the free end of metal thermal sensitive piece.
The end, one end of electric connecting sheet is provided with outward extending electric connection terminal, on the downside of electric connecting sheet, be provided with fixed contact.
The current rectifying and wave filtering circuit that step-down rectifier unit comprises dropping resistor R1 and is made up of diode D1, D3, electric capacity C1, described dropping resistor R1 is connected with temperature conditioning unit, current rectifying and wave filtering circuit respectively.
Metal thermal sensitive piece is nickel-manganese sheet metal, and fixed contact and moving contact are silver alloy contact.
Contribution of the present invention is, it efficiently solves the overload excess temperature multiple protective problem of power consumption equipment.Because the present invention is provided with temperature conditioning unit and manual power-off restoration protected location, make to send early warning signal in real time, to carry out in advance overhauling and eliminating fault point when overload excess temperature appears in power consumption equipment.Meanwhile, due to necessary hand-reset, therefore can guarantee to cause the reason of open circuit or fault point to be eliminated, just can reset, above-mentioned duplicate protection effectively can ensure the use safety of power consumption equipment.The present invention can be widely used in the overload overheat protector of the equipment such as various household electrical appliance and motor.
[accompanying drawing explanation]
Fig. 1 is overall structure cutaway view of the present invention.
Fig. 2 is manual power-off restoration protected location structure cutaway view of the present invention.
Fig. 3 is manual power-off restoration protected location parts exploded perspective schematic diagram of the present invention.
Fig. 4 is circuit theory diagrams of the present invention.
[embodiment]
The following example is further explanation of the present invention, does not constitute any limitation the present invention.
Consult Fig. 1, the overload overheating warning protective device of hand-reset of the present invention comprises temperature conditioning unit 10, manual power-off restoration protected location 20 and step-down rectifier unit 30.
In the present embodiment, described temperature conditioning unit 10 comprises thermostat 11 and the light-emitting diode D2 that is connected with step-down rectifier unit 30 and buzzer.Described thermostat 11 is open type thermostat, and its temperature measurement range is 20 DEG C ~ 150 DEG C.Preferably, this temperature conditioning unit 10 is Kick type temperature controller, and its temperature measurement range is 20 DEG C ~ 150 DEG C.As shown in Figure 4, the input of this temperature conditioning unit 10 is connected with the power line of AC power, and its output is connected in series with the dropping resistor R1 of step-down rectifier unit 30.Described light-emitting diode D2 is serially connected between diode D1, D3 of current rectifying and wave filtering circuit 32, and in the present embodiment, this light-emitting diode D2 is pre-police light-emitting diode, and during early warning, it can the two sudden strain of a muscle mode of red indigo plant be reported to the police.Current rectifying and wave filtering circuit 32 also can connect buzzer, to carry out audible alarm while flashing light alarm, realize the sound of overload overtemperature, light is reported to the police.
As shown in FIG. 1 to 3, described manual power-off restoration protected location 20 comprises pedestal 21, metal thermal sensitive piece 22, fixed contact 23, moving contact 24, insulating trip 25, electric connecting sheet 26, PTC fever tablet 27, PTC stator 28 and sleeve pipe 29.As Fig. 3, described pedestal 21 is the U-shaped metal channel-shaped body of opening upwards, outwardly bottom it, forms electric connecting sheet storage tank 212, the end, one end of pedestal is provided with outward extending electric connection terminal 211, and the power line 40 be connected with power supply J1 is connected to this electric connection terminal 211.Described metal thermal sensitive piece 22 is the sheet metal that can vary with temperature dilatancy, in the present embodiment, and the sheet metal of the ellipse that this metal thermal sensitive piece 22 is made for nickel-manganese.As Fig. 2, one end of metal thermal sensitive piece 22 is fixed by caulking in the electric connecting sheet storage tank 212 of pedestal, and the other end of metal thermal sensitive piece is free end, and metal thermal sensitive piece is curved to be upturned, and contacts closed with the fixed contact 23 on electric connecting sheet 26.The upside riveted joint of this free end is fixed with moving contact 24.Described electric connecting sheet 26 is Metal Flake body, and it is located at the top of pedestal 21, and position corresponding with described moving contact 24 on the downside of electric connecting sheet 26 is riveted and is fixed with fixed contact 23, and this fixed contact 23 contacts closed with described moving contact 24 through insulating trip 25.The end, one end of electric connecting sheet 26 is provided with outward extending electric connection terminal 261, and the power line be connected with load J2 is connected to this electric connection terminal 261.In the present embodiment, described fixed contact 23 and moving contact 24 are silver alloy contact.In Fig. 2, be provided with PTC fever tablet 27 on electric connecting sheet 26 top, the top of this PTC fever tablet 27 is fixed by PTC stator 28.When temperature or load current exceed normal value, metal thermal sensitive piece 22 induced jitter, makes fixed contact 23 be separated with moving contact 24 and cut off the electricity supply.Now, PTC fever tablet 27 two ends produce voltage heating, and the heat produced keeps the not resilience of metal thermal sensitive piece 22, to play lasting power-off effect.As Fig. 3, described PTC stator 28 is the metal channel-shaped bodies that Open Side Down corresponding to pedestal 21 shape, and its top is provided with downward projection, for compressing PTC fever tablet 27.The outside of the electric connecting sheet storage tank 212 of pedestal is fixed in the both sides pressing of PTC stator 28, forms electrical connection.As Fig. 2, Fig. 3, described PTC stator 28 and being separated by insulating trip 25 between pedestal 21 and electric connecting sheet 26.In the present embodiment, described insulating trip 25 is insulating paper, and it is amounted to and is fixed on PTC stator 28 and between pedestal 21 and electric connecting sheet 26, plays insulating effect.Pedestal 21 upon connection and the outer cover of PTC stator 28 have sleeve pipe 29, and this sleeve pipe is that sleeve pipe of wheat, and it plays insulation to device and protective effect.
As shown in Figure 4, described step-down rectifier unit 30 comprises dropping resistor R1, current rectifying and wave filtering circuit 32.The voltage that described dropping resistor R1 exports for reducing temperature conditioning unit 10, it is connected in series mutually with temperature conditioning unit 10, current rectifying and wave filtering circuit 32 and light-emitting diode D2, buzzer respectively.Described current rectifying and wave filtering circuit 32 is made up of diode D1, D3, electric capacity C1, and it is for export temperature conditioning unit 10 and alternating current after dropping resistor R1 step-down converts direct current to.
Operation principle of the present invention as shown in Figure 1; as load J2(, it can be motor or household electrical appliance) when normally working; fixed contact 23 and moving contact 24 are in closure state; voltage between the input of manual power-off restoration protected location 20 and output is that zero, PTC fever tablet 27 is in off position.When load makes temperature because of overload or other reason and reaches design temperature; first to be flashed early warning signal by temperature conditioning unit 10; also can be sounded a buzzer warning by buzzer (not shown) simultaneously; now moving contact 24 and fixed contact 23 disconnect at once; under the effect of supply voltage, PTC fever tablet 27 starts to generate heat and maintains metal thermal sensitive piece 22 a stationary temperature; because PTC fever tablet 27 is in high-impedance state; open circuit is equivalent to load circuit; load quits work, and thus obtains safeguard protection.Even if abnormal temperature has recovered normal, but be still in off-state because metal thermal sensitive piece 22 heats by PTC fever tablet 27, cause load to damage to avoid moving contact 24 before fault is not yet got rid of to close with fixed contact 23.Only have hand off power supply and after fixing a breakdown, PTC fever tablet 27 returns to normal temperature state, moving contact 24 and fixed contact 23 could close, and make manual power-off restoration protected location 20 recover conducting.In addition, in the moment that moving contact 24 and fixed contact 23 disconnect, load current still forms loop by PTC fever tablet 27, to avoid producing electric arc on the moving contact 24 of metal thermal sensitive piece 22, extends the useful life of metal thermal sensitive piece.
By this, the present invention passes through the duplicate protection of temperature conditioning unit 10 and manual power-off restoration protected location 20, can guarantee under fault eliminates prerequisite completely, device just can be made to reset, with available protecting power consumption equipment use safety.
Although by above embodiment to invention has been announcement, protection scope of the present invention is not limited thereto, under the condition not departing from the present invention's design, all will fall in right of the present invention the distortion, replacement etc. that above each component does.
Claims (7)
1. the overload overheating warning protective device of a hand-reset, it is characterized in that, this device carries out the temperature conditioning unit (10) of early warning when comprising load overtemperature, the manual power-off restoration protected location (20) of automatic disconnecting consumers circuit and step-down rectifier unit (30) during load overload overtemperature, wherein, the light-emitting diode D2 that described temperature conditioning unit (10) comprises thermostat (11) and is connected with step-down rectifier unit (30), buzzer or its combination, described step-down rectifier unit (30) comprises dropping resistor R1 and by diode D1, D3, the current rectifying and wave filtering circuit (32) that electric capacity C1 is formed, described dropping resistor R1 respectively with temperature conditioning unit (10), current rectifying and wave filtering circuit (32) connects, the input of described temperature conditioning unit (10) is connected with AC power and step-down rectifier unit (30) respectively with output, described manual power-off restoration protected location (20) comprises pedestal (21), metal thermal sensitive piece (22), fixed contact (23), moving contact (24), insulating trip (25), electric connecting sheet (26), PTC fever tablet (27), PTC stator (28) and sleeve pipe (29), wherein, pedestal (21) inner side is fixed in one end of described metal thermal sensitive piece (22), the other end of metal thermal sensitive piece is free end, moving contact (24) is provided with at the free end of metal thermal sensitive piece, described electric connecting sheet (26) is located at the top of pedestal (21), position corresponding with described moving contact (24) on it is provided with fixed contact (23), PTC fever tablet (27) is provided with on electric connecting sheet (26) top, PTC fever tablet (27) is fixed by PTC stator (28), and PTC stator (28) is connected with pedestal (21), described PTC stator (28) and being separated by insulating trip (25) between pedestal (21) and electric connecting sheet (26), described sleeve pipe (29) is that sleeve pipe of wheat, sleeve pipe (29) is enclosed within the outside of pedestal (21) and PTC stator (28), the input of this manual power-off restoration protected location (20) is connected with AC power and load respectively with output, and
Described temperature conditioning unit (10) sends sound, light early warning signal when load exceedes design temperature, when load temperature recovers normal, early warning is removed; Manual power-off restoration protected location (20) is automatic disconnecting consumers circuit when load overload overtemperature, after load circuit disconnects, only has manual deenergization that manual power-off restoration protected location (20) just can be made to recover conducting.
2. the overload overheating warning protective device of hand-reset as claimed in claim 1, it is characterized in that, described thermostat (11) is open type thermostat, and its temperature measurement range is 20 DEG C ~ 150 DEG C.
3. the overload overheating warning protective device of hand-reset as claimed in claim 2, it is characterized in that, described temperature conditioning unit (10) is Kick type temperature controller, and its temperature measurement range is 20 DEG C ~ 150 DEG C.
4. the overload overheating warning protective device of hand-reset as claimed in claim 1, it is characterized in that, described pedestal (21) is U-shaped metal channel-shaped body, and its end, one end is provided with outward extending electric connection terminal (211).
5. the overload overheating warning protective device of hand-reset as claimed in claim 1; it is characterized in that; pedestal (21) inside bottom is fixed in one end of described metal thermal sensitive piece (22), is provided with moving contact (24) on the upside of the free end of metal thermal sensitive piece (22).
6. the overload overheating warning protective device of hand-reset as claimed in claim 1; it is characterized in that; the end, one end of described electric connecting sheet (26) is provided with outward extending electric connection terminal (261), is provided with fixed contact (23) on the downside of electric connecting sheet.
7. the overload overheating warning protective device of hand-reset as claimed in claim 5, it is characterized in that, described metal thermal sensitive piece (22) is nickel-manganese sheet metal, and fixed contact (23) and moving contact (24) are silver alloy contact.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210414848.XA CN102931636B (en) | 2012-10-25 | 2012-10-25 | Manually-reset overload overtemperature early-warning protection device |
| PCT/CN2013/089625 WO2014063663A1 (en) | 2012-10-25 | 2013-12-17 | Overload and over-temperature early warning protection device having manual reset |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210414848.XA CN102931636B (en) | 2012-10-25 | 2012-10-25 | Manually-reset overload overtemperature early-warning protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102931636A CN102931636A (en) | 2013-02-13 |
| CN102931636B true CN102931636B (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210414848.XA Active CN102931636B (en) | 2012-10-25 | 2012-10-25 | Manually-reset overload overtemperature early-warning protection device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102931636B (en) |
| WO (1) | WO2014063663A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931636B (en) * | 2012-10-25 | 2014-12-31 | 东莞市凯恩电子科技有限公司 | Manually-reset overload overtemperature early-warning protection device |
| CN109028256B (en) * | 2018-07-16 | 2021-10-01 | 珠海格力电器股份有限公司 | Heating equipment and control device and method thereof |
| CN109755067A (en) * | 2019-01-08 | 2019-05-14 | 江苏汇商电器有限公司 | A kind of auxiliary switch type temperature controller with overtemperature alarm function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2739834Y (en) * | 2004-10-25 | 2005-11-09 | 刘锦泰 | Safety plug with abnormal temperature-rise warning |
| CN201163690Y (en) * | 2007-12-14 | 2008-12-10 | 深大宇电器(深圳)有限公司 | Plug |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2569402Y (en) * | 2002-08-12 | 2003-08-27 | 陈基山 | Overheat protector for power supply |
| CN102931636B (en) * | 2012-10-25 | 2014-12-31 | 东莞市凯恩电子科技有限公司 | Manually-reset overload overtemperature early-warning protection device |
-
2012
- 2012-10-25 CN CN201210414848.XA patent/CN102931636B/en active Active
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2013
- 2013-12-17 WO PCT/CN2013/089625 patent/WO2014063663A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2739834Y (en) * | 2004-10-25 | 2005-11-09 | 刘锦泰 | Safety plug with abnormal temperature-rise warning |
| CN201163690Y (en) * | 2007-12-14 | 2008-12-10 | 深大宇电器(深圳)有限公司 | Plug |
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| Publication number | Publication date |
|---|---|
| WO2014063663A1 (en) | 2014-05-01 |
| CN102931636A (en) | 2013-02-13 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20130213 Assignee: Dongguan City Kai billion electronic technology Co. Ltd. Assignor: Dongguan KAIN Electronic Science & Technology Co., Ltd. Contract record no.: 2015990000834 Denomination of invention: Manually-reset overload overtemperature early-warning protection device Granted publication date: 20141231 License type: Common License Record date: 20150930 |
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Application publication date: 20130213 Assignee: Jiang Hua Kai Yi Technology Ltd. Assignor: Dongguan KAIN Electronic Science & Technology Co., Ltd. Contract record no.: 2015990000912 Denomination of invention: Manually-reset overload overtemperature early-warning protection device Granted publication date: 20141231 License type: Common License Record date: 20151105 |
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Effective date of registration: 20170427 Address after: 523451 Guangdong province Dongguan Dongkeng foxlink technology park four foxlink road building E3 Patentee after: Dongguan City Kai billion electronic technology Co. Ltd. Address before: 523472 Guangdong province Dongguan City Hengli Town Industrial Zone second farms Patentee before: Dongguan KAIN Electronic Science & Technology Co., Ltd. |
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