CN220509946U - Arc fault leakage protector special for household electrical appliance - Google Patents
Arc fault leakage protector special for household electrical appliance Download PDFInfo
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- CN220509946U CN220509946U CN202322219702.6U CN202322219702U CN220509946U CN 220509946 U CN220509946 U CN 220509946U CN 202322219702 U CN202322219702 U CN 202322219702U CN 220509946 U CN220509946 U CN 220509946U
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- 238000010891 electric arc Methods 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 10
- 238000004378 air conditioning Methods 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 2
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Abstract
The utility model relates to the technical field of arc fault protection, in particular to an arc fault leakage protector special for household appliances, which comprises a rear cover, a front cover fixed at the front end of the rear cover, a shield clamped at the front end of the front cover, a PCB (printed circuit board) arranged between the rear cover and the front cover, a tripping mechanism arranged on the PCB and an operating handle arranged at the front end of the tripping mechanism and penetrating through the front cover. According to the utility model, the arc fault leakage protector is a novel electric fireproof protection device, and can avoid electric fires caused by faults such as circuit aging, poor contact and the like, when an arc fault or electric leakage occurs at the tail end, the MCU outputs a signal to the action mechanism through the control unit, so that the action mechanism controls the tripping mechanism to be powered off, the effect of protecting an electric appliance is achieved, and the data of the arc and the electric leakage can be uploaded to the server through WIFI, so that intelligent monitoring of the data of the household appliance is achieved, and the safety and stability of the household appliance in the actual use process are improved.
Description
Technical Field
The utility model relates to the technical field of arc fault protection, in particular to an arc fault leakage protector special for household appliances.
Background
An electric arc fault protection electric Appliance (AFDD) is composed of an electric leakage breaker and an electric arc detection module, has the functions of electric leakage, electric arc fault protection and the like, and is suitable for an alternating current circuit. The arc fault leakage protector utilizes an arc detection module to monitor the voltage and current of an arc in a circuit, compares the voltage and current with a set value, and automatically trips a trip structure when the set value is exceeded, so that a loop is cut off, the fault arc is extinguished, and fire disaster is prevented.
In the actual use process of the current special arc fault leakage protector for the household appliances, harmful arc pulses which generate electric fires are difficult to detect, then a tripping mechanism is triggered in time to cut off a power supply, the electric fires are easy to occur, meanwhile, when faults such as circuit aging and poor contact occur, the circuit of the household appliances cannot be cut off in time, abnormal data are transmitted to a server, and the use safety and stability of the arc fault protector are required to be improved.
In view of the above, it is important to design and manufacture an arc fault protector capable of automatically detecting arc and leakage abnormality in real time to prevent electric appliance fire disaster, and the arc fault protector is particularly important in air conditioner accessories.
Disclosure of Invention
The utility model aims at: in order to solve the problems that the traditional arc fault leakage protector special for household appliances is difficult to detect arc pulses in real time, and rapidly cut off circuits when data are abnormal, and abnormal data are difficult to share to a server, the arc fault leakage protector special for household appliances is provided.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a special arc fault earth leakage protector of household electrical appliances, includes the back lid, fixes the protecgulum in the back lid front end, the joint at the guard shield of protecgulum front end, installs PCB between back lid and protecgulum, installs the tripping device on PCB and installs the operating handle at tripping device front end and run through the protecgulum, the inside that lies in the tripping device of back lid is provided with the first binding post that is used for the mains supply to insert, the second binding post that is used for air conditioning circuit to connect is installed to the lower extreme of PCB, be provided with the monitoring actuating mechanism that is used for air conditioning circuit electric arc and earth leakage comprehensive protection between back lid and the PCB.
As a further description of the above technical solution:
the monitoring executing mechanism comprises an MCU installed at the rear end of the PCB, an actuating mechanism installed between the rear end of the PCB and the tripping mechanism, a leakage transformer installed at the rear end of the PCB and positioned between a live wire interface and a zero wire interface of the first wiring terminal, and a transformer A, a transformer B and a transformer C installed at the rear end of the PCB and positioned below the live wire interface of the first wiring terminal.
As a further description of the above technical solution:
and the PCB is integrated with a signal acquisition unit, a power supply unit, a control unit and a WIFI unit.
As a further description of the above technical solution:
the output ends of the signal acquisition unit and the power supply unit are electrically connected with the input end of the MCU, the output end of the MCU is electrically connected with the input ends of the control unit and the WIFI unit respectively, and the output end of the control unit is electrically connected with the input end of the action mechanism.
As a further description of the above technical solution:
the mutual inductor A, the mutual inductor B and the mutual inductor C are all arc mutual inductors.
As a further description of the above technical solution:
the front end of the PCB is positioned below the operating handle, and an arc test button, a prompt lamp and a leakage test button which penetrate through the front cover are sequentially arranged from left to right.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. according to the utility model, the arc fault protector is a novel electric fireproof protection device, and can avoid electric fires caused by faults such as circuit aging, poor contact and the like, when arc faults or electric leakage occurs at the tail end, the MCU outputs a signal to the action mechanism through the control unit, so that the action mechanism controls the tripping mechanism to be powered off, the effect of protecting an electric appliance is achieved, and the data of the electric arc and the electric leakage can be uploaded to the server through WIFI, so that intelligent monitoring of air conditioner data is achieved, and safety and stability in the actual use process of the air conditioner are improved.
2. In the utility model, the arc fault protector detects harmful arc pulses (such as arc generated by insulation drop between wires, poor contact of a switch connector, faults of electrical equipment and the like) which are easy to generate electric fire, then triggers the tripping mechanism to cut off the power supply, and avoids the occurrence of the electric fire.
Drawings
Fig. 1 is a schematic diagram of the arc fault leakage protector for household appliances;
FIG. 2 is a schematic perspective exploded view of the present utility model;
fig. 3 is a schematic structural view of a PCB according to the present utility model;
fig. 4 is a schematic diagram of the circuit connection of the present utility model with a home appliance.
Legend description:
1. a rear cover; 2. a front cover; 3. a shield; 4. a PCB; 401. an MCU; 402. an arc test button; 403. a leakage test button; 404. a warning light; 5. a trip mechanism; 501. an operation handle; 6. an action mechanism; 7. a first connection terminal; 8. a second connection terminal; 9. a mutual inductor A; 10. a mutual inductor B; 11. a mutual inductor C; 12. and a leakage transformer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a special arc fault earth leakage protector of household electrical appliances, including back lid 1, fix the protecgulum 2 at back lid 1 front end, the joint is at the guard shield 3 of protecgulum 2 front end, install the PCB4 between back lid 1 and protecgulum 2, install tripping device 5 on PCB4 and install the operating handle 501 at tripping device 5 front end and run through protecgulum 2, the inside of back lid 1 is located the rear side of tripping device 5 and is provided with the first binding post 7 that is used for commercial power to insert, the second binding post 8 that is used for air conditioning circuit to connect out is installed to the lower extreme of PCB4, be provided with the monitoring actuating mechanism that is used for air conditioning circuit electric arc and electric leakage comprehensive protection between back lid 1 and the PCB 4.
Specifically, as shown in fig. 1-4, the monitoring execution mechanism includes an MCU 401 installed at the rear end of the PCB4, an actuating mechanism 6 installed between the rear end of the PCB4 and the trip mechanism 5, a leakage transformer 12 installed at the rear end of the PCB4 and located between the live wire interface and the neutral wire interface of the first connection terminal 7, and a transformer A9, a transformer B10 and a transformer C11 installed at the rear end of the PCB4 and located below the live wire interface of the first connection terminal 7, wherein a signal acquisition unit, a power supply unit, a control unit and a WIFI unit are integrated on the PCB4, the WIFI unit can transmit data to a server, and an operator can know the working state of the protector by checking the data and diagrams on the server.
The output ends of the signal acquisition unit and the power supply unit are electrically connected with the input end of the MCU 401, the output end of the MCU 401 is electrically connected with the input ends of the control unit and the WI FI unit respectively, the output end of the control unit is electrically connected with the input end of the action mechanism 6, the signal acquisition unit and the power supply unit can acquire the acquired arc data, the electric leakage data and the power supply data in real time and transmit the acquired arc data, the electric leakage data and the power supply data to the MCU 401 in real time for calculation, comparison and analysis, and when the data are abnormal, the MCU 401 can control the action mechanism 6 to work through the control unit, so that the tripping mechanism 5 automatically trips to timely cut off a circuit, and the occurrence of electric fire caused by the circuit abnormality is prevented.
The mutual inductor A9, the mutual inductor B10 and the mutual inductor C11 are all arc mutual inductors, can respectively detect the electric arcs on the fire wires in a multi-position mode, and transmit the electric arc data to the MCU 401 through the signal acquisition unit in real time for calculation, comparison and analysis.
Specifically, as shown in fig. 1-3, an arc test button 402, a prompting lamp 404 and a leakage test button 403 penetrating through the front cover 2 are sequentially installed from left to right at the front end of the PCB4 below the operating handle 501, the leakage test button 403 is used for simulating a leakage signal, when the key is pressed down, a product is tripped, the arc test button 402 is used for simulating the arc signal, when the key is pressed down, the product is tripped, thereby facilitating the maintenance and maintenance treatment of an operator on the protector, the prompting lamp 404 can continuously light a green lamp in a normal process, when the protector works abnormally or the circuit is automatically cut off, the green lamp can be turned on or in an off state, and the operator can know the working state of the protector by observing the state of the prompting lamp 404.
Specifically, the special arc fault leakage protector for the household appliance is not only suitable for circuits of air conditioners, but also suitable for circuit protection of other household appliances (such as a washing machine, a refrigerator, a water heater or an electric heater, and the like), and can protect the circuits when the electric arc is abnormal and the electric leakage is abnormal, and when the electric appliance is in electric leakage or in electric arc fault, only the arc fault leakage protector is powered off, so that normal use of other electric appliances is not influenced.
Working principle: when the electric arc protector is used, as shown in fig. 4, the air conditioner is selected as a household appliance connected with the protector, the protector is arranged at the front end of the air conditioner, the tail end protection function is achieved, the electric arc protector can be connected with the electric supply through the first wiring terminal 7, the circuit of the air conditioner can be connected with the protector through the second wiring terminal 8, an operator can drive the circuit between the first wiring terminal 7 and the second wiring terminal 8 to be communicated and disconnected by manually operating the operating handle 501, in the actual use process, the leakage transformer 12 can monitor the leakage data of the live wire and the zero wire in real time, the leakage data can be transmitted to the MCU 401 in real time for calculation, comparison and analysis, the transformer A9, the transformer B10 and the transformer C11 can collect multi-bit arc data and distribution on the live wire, and transmit the arc data to the MCU 401 in real time for calculation, comparison and analysis, and when the arc data and the leakage data exceed the set values, the MCU 401 can operate by controlling the action mechanism 6 through the control unit, thereby the tripping mechanism 5 is forced to be closed automatically, the electric arc protector and the leakage protector are rapidly powered off, and the whole machine is prevented from generating electric arc protector.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The utility model provides a special arc fault earth leakage protector of household electrical appliances, includes back lid (1), fixes protecgulum (2) at back lid (1) front end, joint at shield (3) of protecgulum (2) front end, installs PCB (4) between back lid (1) and protecgulum (2), installs tripping device (5) on PCB (4) and installs at tripping device (5) front end and run through operating handle (501) of protecgulum (2), its characterized in that, the inside of back lid (1) is located the rear side of tripping device (5) and is provided with first binding post (7) that are used for the mains supply to insert, second binding post (8) that are used for the air conditioning circuit to connect out are installed to the lower extreme of PCB (4), be provided with the monitoring actuating mechanism that is used for air conditioning circuit electric arc and earth leakage comprehensive protection between back lid (1) and PCB (4).
2. The arc fault earth leakage protector for household appliances according to claim 1, wherein the monitoring executing mechanism comprises an MCU (401) installed at the rear end of the PCB (4), an actuating mechanism (6) installed between the rear end of the PCB (4) and the tripping mechanism (5), an earth leakage transformer (12) installed at the rear end of the PCB (4) and located between the live wire interface and the neutral wire interface of the first connection terminal (7), and a transformer a (9), a transformer B (10) and a transformer C (11) installed at the rear end of the PCB (4) and located below the live wire interface of the first connection terminal (7).
3. The arc fault earth-leakage protector for household appliances according to claim 2, characterized in that the PCB (4) is integrated with a signal acquisition unit, a power supply unit, a control unit and a WIFI unit.
4. The arc fault leakage protector for household appliances according to claim 3, wherein the output ends of the signal acquisition unit and the power supply unit are electrically connected with the input end of the MCU (401), the output end of the MCU (401) is electrically connected with the input ends of the control unit and the WIFI unit, and the output end of the control unit is electrically connected with the input end of the actuating mechanism (6).
5. The arc fault earth-leakage protector for household appliances according to claim 2, wherein the transformer a (9), the transformer B (10) and the transformer C (11) are arc transformers.
6. The arc fault earth leakage protector for household appliances according to claim 1, wherein the front end of the PCB (4) is located under the operating handle (501), and an arc test button (402), a warning light (404) and an earth leakage test button (403) penetrating the front cover (2) are installed in sequence from left to right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322219702.6U CN220509946U (en) | 2023-08-17 | 2023-08-17 | Arc fault leakage protector special for household electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322219702.6U CN220509946U (en) | 2023-08-17 | 2023-08-17 | Arc fault leakage protector special for household electrical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220509946U true CN220509946U (en) | 2024-02-20 |
Family
ID=89876174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322219702.6U Active CN220509946U (en) | 2023-08-17 | 2023-08-17 | Arc fault leakage protector special for household electrical appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220509946U (en) |
-
2023
- 2023-08-17 CN CN202322219702.6U patent/CN220509946U/en active Active
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