CN219632049U - High-pressure cleaning machine with delay circuit and bypass temperature-resistant impedance - Google Patents
High-pressure cleaning machine with delay circuit and bypass temperature-resistant impedance Download PDFInfo
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- CN219632049U CN219632049U CN202320262878.7U CN202320262878U CN219632049U CN 219632049 U CN219632049 U CN 219632049U CN 202320262878 U CN202320262878 U CN 202320262878U CN 219632049 U CN219632049 U CN 219632049U
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- 238000004140 cleaning Methods 0.000 title claims abstract description 41
- 230000006698 induction Effects 0.000 claims abstract description 42
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- 239000003990 capacitor Substances 0.000 claims description 21
- 230000005669 field effect Effects 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 7
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- 230000035939 shock Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
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- 239000011248 coating agent Substances 0.000 description 2
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- 230000001276 controlling effect Effects 0.000 description 2
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- 238000013461 design Methods 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The utility model discloses a single-phase induction motor high-pressure cleaning machine with a delay circuit and a bypass Wen Zukang resistance, belonging to the technical field of high-pressure cleaning machines, which comprises: the high-pressure cleaning device comprises a single-phase induction motor, a high-pressure pump, a high-pressure gun, a high-pressure water pipe, a power switch K, a delay circuit and a bypass Wen Zukang Z, wherein the delay circuit is arranged in a power supply loop of the high-pressure cleaning machine and is connected with the single-phase induction motor in series, and the bypass temperature resistance is connected with the delay circuit in parallel. The utility model is different from the conventional series resistor voltage reduction starting, effectively solves the problems of starting time and impact on a power grid during starting of a household 2000-3000W high-power high-voltage cleaning machine, reduces the influence on the power grid during starting of the machine, and simultaneously, the high-voltage cleaning machine of the single-phase induction motor adopting the technology can meet the requirements of international standard IEC 61000-3-3; the utility model has simple and reliable structure and low manufacturing and using cost, and is favorable for popularization in high-pressure cleaning machines.
Description
Technical Field
The utility model belongs to the technical field of high-pressure cleaning machines, and particularly relates to a high-pressure cleaning machine with a delay circuit and bypass temperature resistance.
Background
The 2000-3000W high-power household high-voltage cleaning machine has larger output pressure and flow, the working pressure can reach 12-15MPa, so that various cleaning requirements of household users, such as floors, walls, fences and the like, can be met, the household high-power household high-voltage cleaning machine is deeply favored by the household users, but the household users have limited power supply capacity, the high-power household high-voltage cleaning machine generally adopts a single-phase induction motor with higher efficiency, but the induction motor is used as an inductive load, the starting current of the induction motor is 4-7 times of rated current, the impact on a power grid can be caused, the tripping of the power grid of the user is also caused, and meanwhile, the international standard IEC61000-3-3 has definite pressure drop and duration limiting requirements on the power grid voltage impact caused when the machine is started. How to solve the problem of the starting current and the starting time of the high-power single-phase induction motor becomes an industry problem, and the popularization and the use of the high-voltage cleaning machine of the high-power single-phase induction motor are limited. At present, there is no effective solution to the above problem in the high-voltage cleaning machine of the high-power single-phase induction motor sold in the market, because the maximum starting current reaches 70-100A due to the larger machine power, and the impact on the series-connected step-down resistor is too large, so that no existing step-down resistor in the prior art can be used, such as the series-connected NTC (negative temperature coefficient thermistor) is theoretically best for reducing the starting voltage, through practical verification, it is found that the NTC cannot bear the thermal shock of the high current at all due to the larger machine power, even if the high-temperature-resistant NTC is found, and the output power of the machine is actually reduced due to the fact that the NTC is connected in series in the machine during the working process. The inventor finds the solution in the long-term practice and test groping process, and well solves the problems of starting current and starting time of the high-power single-phase induction motor high-voltage cleaning machine.
Disclosure of Invention
The utility model aims to provide a high-voltage cleaning machine with a delay circuit and bypass temperature resistance, which solves the technical problems that in the prior art, when the high-voltage cleaning machine adopting a high-power induction motor is started, the impact current is large and the stability of a power grid is influenced.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a high pressure washer with a delay circuit and bypass temperature resistance, comprising: the power of the single-phase induction motor is 2000-3000W, and the single-phase induction motor is used for driving the high-pressure pump to work; the high-pressure gun is connected with the high-pressure pump through a high-pressure water pipe; the power switch K is arranged in a power supply loop of the high-pressure cleaning machine and is used for controlling the start and stop of the high-pressure cleaning machine; the delay circuit is arranged in a power supply loop of the high-pressure cleaning machine and is connected with the single-phase induction motor in series; a bypass resistance Wen Zukang Z, the bypass resistance Wen Zukang Z being in parallel with the delay circuit.
Further, the initial state of the delay circuit (600) is an off state, and the delay circuit (600) is switched from the off state to the on state after the power switch K is turned on and reaches the machine set delay time t.
Further, the shunt resistance Wen Zukang Z forms a combined impedance with the motor windings and the capacitance of the single-phase induction motor (100), the combined impedance meets the starting current maximum value of the single-phase induction motor (100) being less than or equal to 48A, and the cumulative time of the current maximum value exceeding 23A in a single starting process is less than or equal to 500mS.
Further, the bypass Wen Zukang Z can bear high-temperature heat shock caused by impedance self-heating after the high-pressure cleaning machine is continuously started for at least 24 times at intervals of 1 minute.
Further, the bypass resistance Wen Zukang Z is 1-10 ohms.
Further, the bypass resistance Wen Zukang Z is a ripple resistance based on a hollow ceramic tube skeleton and alloy resistance wires, and the outer surface of the bypass resistance Wen Zukang Z is coated with an insulating paint.
Further, the delay circuit includes a clock timer for counting the delay circuit from open to closed.
Further, the delay circuit comprises a delay module, the delay module comprises a delay switch unit, the delay switch unit comprises a delay relay K1, a pin 2 of the delay relay K1 is connected with one end of a bypass resistor Wen Zukang Z and one end of a power switch K, and the other end of the power switch K is connected with a fire wire terminal of a power supply; pin 3 of the delay relay K1 is connected with the other end of the bypass resistor Wen Zukang Z and the live wire terminal of the single-phase induction motor (100); one end of a pin 1 of the delay relay K1, the cathode of the diode D3 and one end of the resistor R4 are respectively connected with the common end M2; the other end of the resistor R4 is connected with one end of the resistor R5, and the other end of the resistor R5 is connected with the common end M3; pin 4 of delay relay K1, the positive pole of diode D3, the negative pole of diode D4 are connected with the drain electrode of field effect tube Q1 respectively, and the positive pole of diode D4, the source electrode of field effect tube Q1 are grounded respectively, and the grid of field effect tube Q1, one end of resistance R1, one end of electric capacity C3 are connected public end M3 respectively, and the other end of electric capacity C3, the other end of resistance R1 are grounded respectively.
Further, the time delay module still includes time delay capacitance relief unit, time delay capacitance relief unit includes triode Q3, triode Q3's collecting electrode connects public end M3, triode Q3's projecting pole ground connection, triode Q3's base is connected with resistance R8's one end, triode Q2's collecting electrode respectively, triode Q2's projecting pole ground connection, triode Q2's base is connected with resistance R6's one end, resistance R7's one end respectively, resistance R7's the other end ground connection, resistance R6's the other end, resistance R8's the other end is connected with public end M1 respectively.
Further, the delay module further comprises a resistance-capacitance voltage reduction unit, the resistance-capacitance voltage reduction unit comprises a resistor R3, one end of the resistor R3 is connected with the common end M1, the other end of the resistor R3 and one end of a capacitor C2 are respectively connected with a pin 3 of the rectifier bridge D1, and the other end of the capacitor C2 is grounded; pin 4 of rectifier bridge D1 is grounded; the pin 1 of the rectifier bridge D1 is connected with the zero line N and one end of the resistor RV1, and the pin 2 of the rectifier bridge D1 is connected with one end of the capacitor C1 and one end of the resistor R2; the other end of the capacitor C1 and the other end of the resistor R2 are connected with one end of the fuse F1, and the other end of the fuse F1 is connected with the live wire L and the other end of the resistor RV 1.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The utility model solves the technical problems of large impact current and influence on the stability of a power grid when the high-voltage cleaning machine adopting the high-power induction motor is started, and the rated output power of the machine is not influenced by the bypass temperature resistance after the delay circuit is connected, thereby exerting the maximum power of the machine and exerting the cleaning capability to the greatest extent;
(2) The combined impedance formed by the bypass resistor Wen Zukang, the self winding of the single-phase induction motor and the capacitor can accurately control the maximum value of the starting current to be positioned at a critical value defined by a standard, thereby being beneficial to selecting the impedance with a proper resistance value;
(3) The ceramic fundamental wave grain resistor bypass Wen Zukang adopted by the utility model can bear the thermal shock of the maximum current regulated by the standard;
(4) The time delay circuit can accurately control the time of bypass temperature resistance during starting, effectively avoid long-time energization of bypass Wen Zukang at the same time of ensuring the time limited by the standard, and realize controllable bypass Wen Zukang temperature rise resistance, thereby solving the problem of bypass Wen Zukang high-temperature breakdown resistance;
(5) The circuit has simple structure and low manufacturing and using cost, and is favorable for popularization in high-pressure cleaning machines.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a high-pressure washer with a delay circuit and bypass temperature resistance according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of the circuit principle of FIG. 1;
FIG. 3 is a schematic circuit diagram of a first embodiment of the present utility model;
FIG. 4 is a schematic circuit diagram of a second embodiment of the present utility model;
fig. 5 is a schematic circuit diagram of the delay module of fig. 4;
FIG. 6 is a schematic diagram of the construction of a bypass resistor Wen Zukang Z in an embodiment of the utility model;
FIG. 7 is a waveform diagram of a starting current of a prior art high pressure washer;
FIG. 8 is a waveform diagram of the starting current of the high pressure washer with delay circuit and bypass temperature resistance according to the present utility model;
in the figure: 100. a single-phase induction motor; 300. a high pressure gun; 400. a high pressure pump; 500. a high pressure water pipe; 600. a delay circuit; 700. a clock timer; 800. a delay module; 901. a hollow ceramic tube skeleton; 902. alloy resistance wire; 903. an insulating coating.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
Embodiment one:
as shown in fig. 1 to 3, a high-pressure washer with a delay circuit and bypass temperature-resistant impedance comprises a single-phase induction motor 100, wherein a starting winding of the single-phase induction motor 100 is connected with a power supply through a live wire L and a zero wire N and is used for driving a high-pressure pump 400 to work; the high-pressure gun 300 is connected with the high-pressure pump 400 through a high-pressure water pipe 500; the power switch K is arranged in a power supply loop of the high-pressure cleaning machine and used for controlling the start and stop of the high-pressure cleaning machine; the delay circuit 600 is arranged in a power supply loop of the high-pressure cleaning machine and is connected with the single-phase induction motor 100 in series; the bypass resistor Wen Zukang Z is connected in parallel with the delay circuit 600. The initial state of the delay circuit 600 is an off state, and the delay circuit 600 is switched from off to on after a set delay time t is reached after the power switch K is turned on; the combined impedance formed by the bypass resistance Wen Zukang Z, the motor windings L (L1 and L2 in figures 2-4) of the single-phase induction motor 100 and the capacitor C can meet the starting current maximum value of the single-phase induction motor 100 which is less than or equal to 48A, and the accumulated time of the current maximum value exceeding 23A in each single starting process is less than or equal to 500mS. The bypass Wen Zukang Z can bear high-temperature heat shock caused by impedance self-heating after the high-pressure cleaning machine is continuously started for at least 24 times at intervals of 1 minute. The delay time t of the delay circuit 600 is 500 + -100 mS.
Aiming at the single-phase induction motor cleaner products with the power of more than 2000W (mainly used for 2000-3000W), the utility model is characterized in that a bypass resistor Wen Zukang Z is connected in series in a power supply loop of the induction motor to be matched with a capacitor in a starting winding of the single-phase induction motor, the matching relation is that the resistance value is 1-10 ohms, and the capacitance value range is as follows: 10-200 uf; the starting torque and the starting current required by design are provided for the armature at the initial starting stage of the single-phase induction motor, so that the motor can complete the starting process under the condition of meeting the authentication standard, after the motor is started and enters the normal running state, the delay circuit 600 is closed, the bypass is in a bypass of Wen Zukang Z resistance, no current passes through the bypass of Wen Zukang Z resistance, and the bypass of Wen Zukang Z resistance does not generate energy consumption and heat.
As shown in fig. 6, the bypass resistor Wen Zukang Z is a wire-wound resistor comprising a hollow ceramic tube skeleton 901 and an alloy resistance wire 902 wound on the surface of the hollow ceramic tube skeleton 901, the surface of the alloy resistance wire 902 being coated with a high-temperature resistant insulating coating 903. Alloy resistance wire 902 is positioned on the surface of hollow ceramic tube skeleton 901, so that heat dissipation is facilitated; the alloy resistance wire 902 is attached with high temperature resistant insulating paint 903 for fixing and insulating protection.
In this embodiment, the delay circuit includes a clock timer 700, the clock timer 700 being used to delay the circuit from an open to a closed timing. After the timing time has elapsed, the delay circuit 600 is closed, bypassing the bypass resistor Wen Zukang Z.
Embodiment two:
the difference between the present embodiment and the first embodiment is that the delay circuit 600 in the present embodiment includes a delay module 800, as shown in fig. 4 and 5, the delay module 800 includes three parts, namely a delay switch unit, a delay capacitor bleeder unit and a resistance-capacitance step-down unit.
The delay switch unit comprises a delay relay K1, a pin 2 of the delay relay K1 is connected with one end of the bypass resistor Wen Zukang Z and one end of the power switch K, and the other end of the power switch K is connected with a live wire terminal of a power supply; pin 3 of the delay relay K1 is connected with the other end of the bypass resistor Wen Zukang Z and the live wire terminal of the starting winding of the single-phase induction motor 100; one end of a pin 1 of the delay relay K1, the cathode of the diode D3 and one end of the resistor R4 are respectively connected with the common end M2; the other end of the resistor R4 is connected with one end of the resistor R5, and the other end of the resistor R5 is connected with the common end M3; pin 4 of delay relay K1, the positive pole of diode D3, the negative pole of diode D4 are connected with the drain electrode of field effect tube Q1 respectively, and the positive pole of diode D4, the source electrode of field effect tube Q1 are grounded respectively, and the grid of field effect tube Q1, one end of resistance R1, one end of electric capacity C3 are connected public end M3 respectively, and the other end of electric capacity C3, the other end of resistance R1 are grounded respectively.
The time-delay capacitor discharge unit comprises a triode Q3, wherein a collector of the triode Q3 is connected with a public end M3, an emitter of the triode Q3 is grounded, a base of the triode Q3 is respectively connected with one end of a resistor R8 and a collector of the triode Q2, the emitter of the triode Q2 is grounded, a base of the triode Q2 is respectively connected with one end of a resistor R6 and one end of a resistor R7, the other end of the resistor R7 is grounded, and the other end of the resistor R6 and the other end of the resistor R8 are respectively connected with the public end M1.
The resistance-capacitance voltage reduction unit comprises a resistor R3, one end of the resistor R3 is connected with the common end M1, the other end of the resistor R3 and one end of a capacitor C2 are respectively connected with a pin 3 of a rectifier bridge D1, and the other end of the capacitor C2 is grounded; pin 4 of rectifier bridge D1 is grounded; the pin 1 of the rectifier bridge D1 is connected with the zero line N and one end of the resistor RV1, and the pin 2 of the rectifier bridge D1 is connected with one end of the capacitor C1 and one end of the resistor R2; the other end of the capacitor C1 and the other end of the resistor R2 are connected with one end of the fuse F1, and the other end of the fuse F1 is connected with the live wire L and the other end of the resistor RV 1.
Working principle:
1) The system is powered on, at the moment, the single-phase induction motor 100 and the delay module 800 which pass through the bypass Wen Zukang Z are powered on simultaneously, the single-phase induction motor 100 starts to start, and the delay module 800 starts to enter a delay state;
2) After the time T passes, the single-phase induction motor 100 enters a normal operation state after starting, and T is a delay time set by the delay module 800 and is determined by the resistor R4, the resistor R5 and the capacitor C3. At this time, the delay module 800 opens the relay K1, and the relay K1 is in a closed state. Because the closed impedance of the relay K1 is far smaller than the bypass resistance Wen Zukang Z, the running current of the single-phase induction motor almost completely passes through the relay K1 loop, no current passes through the bypass resistance Wen Zukang Z, no heat is generated, and the heat generated in the starting process is dissipated by the air duct heat dissipation or natural cooling.
Effect contrast:
as shown in fig. 7, the high pressure washer of the prior art has a peak start-up current of up to 85A; as shown in FIG. 8, the high-pressure washer with the delay circuit and the bypass temperature-resistant impedance has the starting current controlled within 40A and meets the requirements of the authentication standard.
The utility model effectively reduces the starting current of the high-voltage cleaning machine adopting the high-power induction motor, and reduces the influence on the stability of the power grid when the high-voltage cleaning machine is started; the circuit has simple structure and low manufacturing and using cost, and is favorable for popularization in high-pressure cleaning machines.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (10)
1. A high pressure washer having a delay circuit and a bypass temperature resistant impedance, comprising:
the power of the single-phase induction motor (100) is 2000-3000W, and the single-phase induction motor (100) is used for driving the high-pressure pump (400) to work;
a high-pressure gun (300), wherein the high-pressure gun (300) is connected with a high-pressure pump (400) through a high-pressure water pipe (500);
the power switch K is arranged in a power supply loop of the high-pressure cleaning machine and is used for controlling the start and stop of the high-pressure cleaning machine;
the delay circuit (600) is arranged in a power supply loop of the high-pressure cleaning machine and is connected with the single-phase induction motor (100) in series;
a bypass resistance Wen Zukang Z, the bypass resistance Wen Zukang Z being in parallel with the delay circuit.
2. The high-pressure cleaning machine with a delay circuit and bypass temperature-resistant impedance according to claim 1, wherein the initial state of the delay circuit (600) is an off state, and the delay circuit (600) is switched from the off state to the on state after a machine set delay time t is reached after the power switch K is turned on.
3. The high pressure washer with delay circuit and shunt temperature resistant impedance of claim 1 wherein said shunt temperature resistant Wen Zukang Z forms a combined impedance with a motor winding and a capacitor of said single phase induction motor (100), said combined impedance satisfying a starting current maximum of said single phase induction motor (100) of 48A or less and a single starting process current maximum exceeding an integrated time of 23A of 500mS or less.
4. The high pressure washer with delay circuit and bypass temperature resistant impedance of claim 1 wherein the bypass temperature resistant Wen Zukang Z is capable of withstanding high temperature thermal shock from impedance self-heating after the high pressure washer is continuously started at least 24 times at 1 minute intervals.
5. The high pressure washer with delay circuit and bypass temperature resistant impedance of claim 1 wherein the bypass resistance Wen Zukang Z has a resistance value of 1-10 ohms.
6. The high pressure washer with delay circuit and bypass temperature resistant impedance of claim 1 wherein the bypass resistance Wen Zukang Z is a corrugated resistance based on a hollow ceramic tube skeleton (901) and alloy resistance wires (902), the bypass resistance Wen Zukang Z outer surface being coated with an insulating paint (903).
7. The high pressure washer with delay circuit and bypass temperature resistant impedance of claim 1 wherein said delay circuit (600) comprises a clock timer (700), said clock timer (700) for said delay circuit (600) to count from open to closed.
8. The high-pressure cleaning machine with a delay circuit and bypass temperature-resistant impedance according to claim 1, wherein the delay circuit (600) comprises a delay module (800), the delay module (800) comprises a delay switch unit, the delay switch unit comprises a delay relay K1, a pin 2 of the delay relay K1 is connected with one end of the bypass temperature-resistant Wen Zukang Z and one end of a power switch K, and the other end of the power switch K is connected with a live wire terminal of a power supply; pin 3 of the delay relay K1 is connected with the other end of the bypass resistor Wen Zukang Z and the live wire terminal of the single-phase induction motor (100);
one end of a pin 1 of the delay relay K1, the cathode of the diode D3 and one end of the resistor R4 are respectively connected with the common end M2; the other end of the resistor R4 is connected with one end of the resistor R5, and the other end of the resistor R5 is connected with the common end M3; pin 4 of delay relay K1, the positive pole of diode D3, the negative pole of diode D4 are connected with the drain electrode of field effect tube Q1 respectively, and the positive pole of diode D4, the source electrode of field effect tube Q1 are grounded respectively, and the grid of field effect tube Q1, one end of resistance R1, one end of electric capacity C3 are connected public end M3 respectively, and the other end of electric capacity C3, the other end of resistance R1 are grounded respectively.
9. The high-voltage cleaning machine with the delay circuit and the bypass temperature-resistant impedance according to claim 8, wherein the delay module (800) further comprises a delay capacitor discharge unit, the delay capacitor discharge unit comprises a triode Q3, a collector of the triode Q3 is connected with a common end M3, an emitter of the triode Q3 is grounded, a base of the triode Q3 is respectively connected with one end of a resistor R8 and a collector of a triode Q2, the emitter of the triode Q2 is grounded, a base of the triode Q2 is respectively connected with one end of a resistor R6 and one end of a resistor R7, the other end of the resistor R7 is grounded, and the other end of the resistor R6 and the other end of the resistor R8 are respectively connected with the common end M1.
10. The high-pressure cleaning machine with the delay circuit and the bypass temperature-resistant impedance according to claim 9, wherein the delay module (800) further comprises a resistance-capacitance voltage reduction unit, the resistance-capacitance voltage reduction unit comprises a resistor R3, one end of the resistor R3 is connected with a common end M1, the other end of the resistor R3 and one end of a capacitor C2 are respectively connected with a pin 3 of a rectifier bridge D1, and the other end of the capacitor C2 is grounded; pin 4 of rectifier bridge D1 is grounded;
the pin 1 of the rectifier bridge D1 is connected with the zero line N and one end of the resistor RV1, and the pin 2 of the rectifier bridge D1 is connected with one end of the capacitor C1 and one end of the resistor R2; the other end of the capacitor C1 and the other end of the resistor R2 are connected with one end of the fuse F1, and the other end of the fuse F1 is connected with the live wire L and the other end of the resistor RV 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320262878.7U CN219632049U (en) | 2023-02-21 | 2023-02-21 | High-pressure cleaning machine with delay circuit and bypass temperature-resistant impedance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320262878.7U CN219632049U (en) | 2023-02-21 | 2023-02-21 | High-pressure cleaning machine with delay circuit and bypass temperature-resistant impedance |
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| Publication Number | Publication Date |
|---|---|
| CN219632049U true CN219632049U (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320262878.7U Active CN219632049U (en) | 2023-02-21 | 2023-02-21 | High-pressure cleaning machine with delay circuit and bypass temperature-resistant impedance |
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| Country | Link |
|---|---|
| CN (1) | CN219632049U (en) |
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2023
- 2023-02-21 CN CN202320262878.7U patent/CN219632049U/en active Active
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