CN202872334U - Manually-reset overload overtemperature early-warning protective device - Google Patents
Manually-reset overload overtemperature early-warning protective device Download PDFInfo
- Publication number
- CN202872334U CN202872334U CN 201220553618 CN201220553618U CN202872334U CN 202872334 U CN202872334 U CN 202872334U CN 201220553618 CN201220553618 CN 201220553618 CN 201220553618 U CN201220553618 U CN 201220553618U CN 202872334 U CN202872334 U CN 202872334U
- Authority
- CN
- China
- Prior art keywords
- reset
- early warning
- load
- overload
- pedestal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
Disclosed is a manually-reset overload overtemperature early-warning protective device, comprising a temperature control unit (10) for conducting early warning in case of overtemperature of a load, a manual power-off reset protection unit (20) for automatically disconnecting a load circuit in case of overload and overtemperature of the load, and a pressure-reduction rectification unit (30). Input and output terminals of the temperature control unit (10) are respectively connected with an alternating current power supply and the pressure-reduction rectification unit (30). Input and output terminals of the manual power-off reset protection unit (20) are respectively connected with the alternating current power supply and the load. The device sends out an early-warning signal timely when overload and overtemperature occur in electric equipment, thereby being beneficial for conducting maintenance and fault point elimination in advance, and at the same time, the device must be reset manually so that the device is guaranteed to be reset only after causes or fault points causing the break of the circuit are eliminated. The aforementioned double-layer protection can effectively guarantee the utilization safety of the electric equipment.
Description
[technical field]
The utility model relates to the overload overtemperature protection device of electrical equipment, particularly relates to a kind of overload overtemperature early warning protector that has the hand-reset of overload overtemperature early warning and hand-reset protection concurrently.
[background technology]
In people's life, using various electric type equipment.People not only pay close attention to the use function of equipment when using electric equipment, and more pay close attention to the safety in utilization of equipment.Owing to when the components and parts of power consumption equipment or electronic circuit produce fault, can cause equipment heating, when temperature surpasses normal value, can cause equipment fault, thereby affect the normal use of equipment.For this reason, general electrical equipment or electronic equipment are equipped with temperature switch or thermostat so that when device temperature surpasses normal value deenergization, the protection device security.Yet; the overload overheat protector that existing electrical equipment or electronic equipment only are provided with simple function usually is with temperature switch or thermostat; such devices is because without warning function and manual power-off restoration function; so that people can't learn and eliminate potential faults in advance; and some equipment automatically resets not eliminating in the potential faults situation, thus have again a fault may reach potential safety hazard.
[summary of the invention]
The utility model is intended to address the above problem, and a kind of early warning signal that can send the overload excess temperature of power consumption equipment is provided, in order to eliminate in advance the fault point, and is confirming that fault eliminated the overload overtemperature early warning protector of the hand-reset of hand-reset under the prerequisite.
For achieving the above object; the utility model provides a kind of overload overtemperature early warning protector of hand-reset; manual power-off restoration protected location and the step-down rectifier unit of automatic disconnection load circuit during temperature conditioning unit, the load overload overtemperature that carries out early warning when this device comprises the load overtemperature; wherein; the input of described temperature conditioning unit is connected with output with AC power and step-down rectifier unit and is connected; 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 surpasses design temperature, early warning was removed when load temperature recovered normal; Manually power-off restoration protected location automatic disconnection load circuit when load overload overtemperature after load circuit disconnects, only has manual deenergization just can make manual power-off restoration protected location recover conducting.
Temperature conditioning unit comprises thermostat and the light-emitting diode D2, buzzer or its combination that are connected with the step-down rectifier unit.
Described thermostat is the open type thermostat, and its temperature measurement range is 20 ℃～150 ℃.Preferably, this temperature conditioning unit is Kick type temperature controller, and its temperature measurement range is 20 ℃～150 ℃.
Manually the power-off restoration protected location comprises pedestal; the metal thermal sensitive piece; fixed contact; moving contact; insulating trip; electric connecting sheet; the PTC fever tablet; PTC stator and sleeve pipe; wherein; one end of described metal thermal sensitive piece is fixed in the pedestal inboard; the other end of metal thermal sensitive piece is free end; free end at the metal thermal sensitive piece is provided with moving contact; described electric connecting sheet is located at the top of pedestal; position corresponding with described moving contact on it is provided with fixed contact; be provided with the PTC fever tablet on electric connecting sheet top; the PTC fever tablet is fixed by the PTC stator; and the PTC stator is connected with pedestal; separated by insulating trip between described PTC stator and pedestal and the electric connecting sheet, casing pipe sleeve is in the outside of pedestal and PTC stator.
Pedestal is U-shaped metallic channel shape body, and one end end is provided with outward extending electric connection terminal.
One end of metal thermal sensitive piece is fixed in the pedestal inside bottom, and the free end upside of metal thermal sensitive piece is provided with moving contact.
One end end of electric connecting sheet is provided with outward extending electric connection terminal, is provided with fixed contact at the electric connecting sheet downside.
The step-down rectifier unit comprises dropping resistor R1 and the current rectifying and wave filtering circuit that is made of diode D1, D3, capacitor C 1, and described dropping resistor R1 is connected with temperature conditioning unit, current rectifying and wave filtering circuit respectively.
The metal thermal sensitive piece is the nickel-manganese sheet metal, and fixed contact and moving contact are the silver alloy contact.
Contribution of the present utility model is that it efficiently solves the overload excess temperature multiple protective problem of power consumption equipment.Because the utility model is provided with temperature conditioning unit and manual power-off restoration protected location, so that when the overload excess temperature appears in power consumption equipment, can send in real time early warning signal, in order to overhaul in advance and eliminate the fault point.Simultaneously, because therefore necessary hand-reset can guarantee to cause the reason of open circuit or fault point to eliminate, just can reset, above-mentioned duplicate protection can effectively guarantee the use safety of power consumption equipment.The utility model can be widely used in the overload overheat protector of the equipment such as various household electrical appliance and motor.
[description of drawings]
Fig. 1 is overall structure cutaway view of the present utility model.
Fig. 2 is manual power-off restoration protected location structure cutaway view of the present utility model.
Fig. 3 is manual power-off restoration protected location parts exploded perspective schematic diagram of the present utility model.
Fig. 4 is circuit theory diagrams of the present utility model.
[embodiment]
The following example is to further explanation of the present utility model and explanation, and the utility model is not constituted any limitation.
Consult Fig. 1, the overload overtemperature early warning protector of hand-reset of the present utility model 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 and the buzzer that are connected with step-down rectifier unit 30.Described thermostat 11 is the open type thermostat, and its temperature measurement range is 20 ℃～150 ℃.Preferably, this temperature conditioning unit 10 is Kick type temperature controller, and its temperature measurement range is 20 ℃～150 ℃.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, the 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 it can the two sudden strain of a muscle modes of red indigo plant be reported to the police during early warning.Also buzzer be can connect on the current rectifying and wave filtering circuit 32, in order in flashing light alarm, carry out audible alarm, sound, the light warning of overload overtemperature realized.
Such as Fig. 1～shown in Figure 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.Such as Fig. 3, the U-shaped metallic channel shape body that described pedestal 21 is opening upwards, its bottom is outwardly, forms electric connecting sheet storage tank 212, one end end of pedestal is provided with outward extending electric connection terminal 211, and the power line 40 that is 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 oval-shaped sheet metal that this metal thermal sensitive piece 22 is made for nickel-manganese.Such as Fig. 2, an end of metal thermal sensitive piece 22 riveted joint is fixed in the electric connecting sheet storage tank 212 of pedestal, and the other end of metal thermal sensitive piece is free end, and the metal thermal sensitive piece is curved to be upturned, and contact closure with fixed contact 23 on the electric connecting sheet 26.This free-ended upside riveted joint 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, is fixed with fixed contact 23 in the 24 corresponding position riveted joints of electric connecting sheet 26 downsides and described moving contact, and this fixed contact 23 passes insulating trip 25 and contacts closure with described moving contact 24.One end end of electric connecting sheet 26 is provided with outward extending electric connection terminal 261, and the power line that is 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 the silver alloy contact.Among Fig. 2, be provided with PTC fever tablet 27 on electric connecting sheet 26 tops, the top of this PTC fever tablet 27 is fixed by PTC stator 28.When temperature or load current exceeded normal value, metal thermal sensitive piece 22 induced jitters were so that fixed contact 23 separates with moving contact 24 and cuts off the electricity supply.At this moment, PTC fever tablet 27 two ends produce the voltage heating, and the 22 not resiliences of the heat that produces maintenance metal thermal sensitive piece, continue the outage effect to play.Such as Fig. 3, described PTC stator 28 is corresponding metallic channel shape bodies that Open Side Down with pedestal 21 shapes, and its top is provided with downward projection, is used 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 to be electrically connected.Such as Fig. 2, Fig. 3, separated by insulating trip 25 between described PTC stator 28 and pedestal 21 and the electric connecting sheet 26.In the present embodiment, described insulating trip 25 is insulating paper, and it is amounted to and is fixed between PTC stator 28 and pedestal 21 and the electric connecting sheet 26, plays insulating effect.Pedestal 21 after 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 and protective effect to device.
As shown in Figure 4, described step-down rectifier unit 30 comprises dropping resistor R1, current rectifying and wave filtering circuit 32.Described dropping resistor R1 is for reducing the voltage of temperature conditioning unit 10 outputs, and 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 of diode D1, D3, capacitor C 1, and it is used for converting temperature conditioning unit 10 outputs and the alternating current after dropping resistor R1 step-down to direct current.
Operation principle of the present utility model as shown in Figure 1; it can be motor or household electrical appliance as load J2() when working; fixed contact 23 and moving contact 24 are in closure state; manually the input of power-off restoration protected location 20 and the voltage between the output are zero, and PTC fever tablet 27 is in off position.When load former thereby when making temperature reach design temperature because of overload or other; at first by temperature conditioning unit 10 early warning signal that flashes; also can be simultaneously by the warning of sounding a buzzer of buzzer (not shown); this moment, moving contact 24 disconnected at once with fixed contact 23; PTC fever tablet 27 begins heating and keeps metal thermal sensitive piece 22 a stationary temperature under the effect of supply voltage; because PTC fever tablet 27 is in high-impedance state; load circuit is equivalent to open circuit; load quits work, thereby has obtained safeguard protection.Even abnormal temperature has recovered normally, but because metal thermal sensitive piece 22 is subjected to 27 heating of PTC fever tablet and still is in off-state, moving contact 24 causes load to damage with fixed contact 23 closures before fault is not yet got rid of to avoid.After only having the hand off power supply and getting rid of fault, PTC fever tablet 27 returns to the normal temperature state, and moving contact 24 could be closed with fixed contact 23, so that manually power-off restoration protected location 20 recovers conducting.In addition, in the moment of moving contact 24 and fixed contact 23 disconnections, load current still can form loops by PTC fever tablet 27, to avoid producing electric arc at the moving contact 24 of metal thermal sensitive piece 22, prolong the useful life of metal thermal sensitive piece.
By this, the utility model is by temperature conditioning unit 10 and the manual duplicate protection of power-off restoration protected location 20, can guarantee to eliminate fully in fault device is resetted, and uses safety with effective protection power consumption equipment.
Although by above embodiment the utility model is disclosed; but protection range of the present utility model is not limited to this; do not departing under the condition of the utility model design, the distortion that above each member is done, replacement etc. all will fall in the claim scope of the present utility model.
Claims (10)
1. the overload overtemperature early warning protector of a hand-reset; it is characterized in that; manual power-off restoration protected location (20) and step-down rectifier unit (30) of automatic disconnection load circuit during temperature conditioning unit (10), the load overload overtemperature that carries out early warning when this device comprises the load overtemperature; wherein; the input of described temperature conditioning unit (10) is connected with output with AC power and step-down rectifier unit (30) and is connected; the input of described 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 surpasses design temperature, early warning was removed when load temperature recovered normal; Manually power-off restoration protected location (20) automatic disconnection load circuit when load overload overtemperature after load circuit disconnects, only has manual deenergization just can make manual power-off restoration protected location (20) recover conducting.
2. the overload overtemperature early warning protector of hand-reset as claimed in claim 1 is characterized in that, described temperature conditioning unit (10) comprises thermostat (11) and the light-emitting diode D2, buzzer or its combination that are connected with step-down rectifier unit (30).
3. the overload overtemperature early warning protector of hand-reset as claimed in claim 2 is characterized in that, described thermostat (11) is the open type thermostat, and its temperature measurement range is 20 ℃～150 ℃.
4. the overload overtemperature early warning protector of hand-reset as claimed in claim 3 is characterized in that, described temperature conditioning unit (10) is Kick type temperature controller, and its temperature measurement range is 20 ℃～150 ℃.
5. the overload overtemperature early warning protector of hand-reset as claimed in claim 1; it is characterized in that; 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; one end of described metal thermal sensitive piece (22) is fixed in pedestal (21) inboard; the other end of metal thermal sensitive piece is free end; free end at the metal thermal sensitive piece is provided with moving contact (24); 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); be provided with PTC fever tablet (27) on electric connecting sheet (26) top; PTC fever tablet (27) is fixing by PTC stator (28); and PTC stator (28) is connected with pedestal (21); separated by insulating trip (25) between described PTC stator (28) and pedestal (21) and the electric connecting sheet (26), sleeve pipe (29) is enclosed within the outside of pedestal (21) and PTC stator (28).
6. the overload overtemperature early warning protector of hand-reset as claimed in claim 5 is characterized in that, described pedestal (21) is U-shaped metallic channel shape body, and one end end is provided with outward extending electric connection terminal (211).
7. the overload overtemperature early warning protector of hand-reset as claimed in claim 5 is characterized in that, an end of described metal thermal sensitive piece (22) is fixed in pedestal (21) inside bottom, and the free end upside of metal thermal sensitive piece (22) is provided with moving contact (24).
8. the overload overtemperature early warning protector of hand-reset as claimed in claim 5 is characterized in that, an end end of described electric connecting sheet (26) is provided with outward extending electric connection terminal (261), is provided with fixed contact (23) at the electric connecting sheet downside.
9. the overload overtemperature early warning protector of hand-reset as claimed in claim 1; it is characterized in that; described step-down rectifier unit (30) comprises dropping resistor R1 and the current rectifying and wave filtering circuit (32) that is made of diode D1, D3, capacitor C 1, and described dropping resistor R1 is connected with temperature conditioning unit (10), current rectifying and wave filtering circuit (32) respectively.
10. the overload overtemperature early warning protector of hand-reset as claimed in claim 7 is characterized in that, described metal thermal sensitive piece (22) is the nickel-manganese sheet metal, and fixed contact (23) and moving contact (24) are the silver alloy contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553618 CN202872334U (en) | 2012-10-25 | 2012-10-25 | Manually-reset overload overtemperature early-warning protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553618 CN202872334U (en) | 2012-10-25 | 2012-10-25 | Manually-reset overload overtemperature early-warning protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202872334U true CN202872334U (en) | 2013-04-10 |
Family
ID=48039023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220553618 Expired - Fee Related CN202872334U (en) | 2012-10-25 | 2012-10-25 | Manually-reset overload overtemperature early-warning protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202872334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010822A (en) * | 2017-12-30 | 2018-05-08 | 浙江磐安中最电器有限公司 | A kind of current over-load protector |
-
2012
- 2012-10-25 CN CN 201220553618 patent/CN202872334U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010822A (en) * | 2017-12-30 | 2018-05-08 | 浙江磐安中最电器有限公司 | A kind of current over-load protector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102983462B (en) | Overload over-temperature early warning protection plug with manual reset | |
| CN102957061B (en) | Manually reset overload and overtemperature protection power socket | |
| CN201185273Y (en) | Power-supply plug with cable earth leakage protection function | |
| CN202888544U (en) | Hand reset overload overtemperature protection plug with alarm function | |
| CN102931636B (en) | Manually-reset overload overtemperature early-warning protection device | |
| CN1317795C (en) | Safety plug having abnormal temp raising alarm | |
| CN202872334U (en) | Manually-reset overload overtemperature early-warning protective device | |
| CN202888542U (en) | Manual reset overload overtemperature protection socket with pre-warning function | |
| CN202977902U (en) | Manual reset type overload overtemperature early-warning protection plug | |
| CN202997211U (en) | A manually-reset overload and overtemperature protection power socket | |
| CN206894224U (en) | Temperature Control Type insert row | |
| CN203468351U (en) | Safety food processor | |
| CN203434386U (en) | Safety socket with over current protection function | |
| CN204708587U (en) | The improper double protection structures of a kind of electric cooker | |
| CN203242858U (en) | Safe socket assembly with over-current protection | |
| CN203690889U (en) | Over-temperature and over-current protection module capable of being reset manually in electrified manner | |
| CN202888543U (en) | Manual reset overload overtemperature protection socket | |
| CN202395429U (en) | Thermal protection device for motor | |
| CN202888540U (en) | Manual reset overload overtemperature protection plug with pre-warning function | |
| CN202067366U (en) | Household electrical appliance failure alarm | |
| CN202585969U (en) | Temperature control safety plug | |
| CN202888541U (en) | Overload overtemperature protection socket with alarm function | |
| CN202888545U (en) | Overload overtemperature protection plug with pre-warning function | |
| CN202888539U (en) | Overload overtemperature protection plug with alarm function | |
| CN203480360U (en) | Power strip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160321 Granted publication date: 20130410 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20160921 Granted publication date: 20130410 |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20160921 Granted publication date: 20130410 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20170921 Granted publication date: 20130410 |
|
| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20151025 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |