CN2659024Y - Power regulation mechanism of household electrical appliance - Google Patents
Power regulation mechanism of household electrical appliance Download PDFInfo
- Publication number
- CN2659024Y CN2659024Y CN 03259021 CN03259021U CN2659024Y CN 2659024 Y CN2659024 Y CN 2659024Y CN 03259021 CN03259021 CN 03259021 CN 03259021 U CN03259021 U CN 03259021U CN 2659024 Y CN2659024 Y CN 2659024Y
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- CN
- China
- Prior art keywords
- control circuit
- series
- power control
- electric connecting
- switch
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- Expired - Lifetime
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Abstract
A power regulation mechanism of household electric appliance comprises a lower power of control circuit and a high power of control circuit. A second control circuit T2 consists of a negative coefficient of thermistor NTCR and a switch K1 by a serial connection; in case of the high power of control circuit working, the switch K1 keeps close; in case of the lower power of control circuit working, the switch K1 keeps open. Because the lower power is characterized in a small harmonic, a thyristor is used for power regulation. At the state of high power, the thyristor is not used, thereby greatly reducing the harmonic.
Description
Technical field
The utility model relates to a kind of power adjustments mechanism of household electrical appliance.
Background technology
In the prior art, household electrical appliance are at the general thyristor speed control that adopts of when work, and load voltage waveform can produce distortion, and especially trigger angle is in 85 degree triple-frequency harmonics maximum when 95 spend, and can cause damage to the electric equipment beyond electrical network and the utility network.
Summary of the invention
The purpose of this utility model is to provide a kind of and can reduces triple-frequency harmonics and can carry out the power adjustments mechanism of the household electrical appliance of power adjustments on a large scale.
The technical solution of the utility model is: a kind of power adjustments mechanism of household electrical appliance, comprise low-power control circuit, high power control circuit, being in series with silicon controlled rectifier voltage regulating circuit T1 after the first main winding L1, series excited machine M, the second main winding L2, the second auxiliary winding L4, the first auxiliary winding L3 are in series constitutes the low-power control circuit again; Be in series with second control circuit T2 again after the first main winding L1, series excited machine M, the second main winding L2 are in series and constitute the high power control circuit; Be provided with the adjustable resistance Rp of the power that is used to regulate series excited machine M among the described silicon controlled rectifier voltage regulating circuit T1; Described second control circuit T2 is in series by negative coefficient thermistor NTCR and K switch 1 and forms, when the high power control circuit is in running order, described K switch 1 is in closure state, and when the low-power control circuit was in running order, described K switch 1 was in the state of disconnection.
The utility model compared with prior art has following advantage:
Because harmonic wave is also less under the low power state, therefore regulate adjustable resistance Rp, can regulate the silicon controlled angle of flow, and then regulate the power of series excited machine.When switching to high power, do not use controllable silicon, therefore can finally reduce harmonic wave, the impulse current when negative coefficient thermistor NTCR can reduce to switch greatly.
Description of drawings
Accompanying drawing 1 is the circuit theory diagrams of the utility model when the low-power control circuit is in running order;
Accompanying drawing 2 is the circuit theory diagrams of the utility model when the high power control circuit is in running order;
Accompanying drawing 3 is the structural representation of adjustable resistance Rp of the present utility model when the low-power control circuit is in running order;
Accompanying drawing 4 is the structural representation of adjustable resistance Rp of the present utility model when the high power control circuit is in running order;
Embodiment
Referring to accompanying drawing, a kind of power adjustments mechanism of household electrical appliance is that 1600 watts motor is an example with rated power, and 0 to 1300 watt-hour is the low-power section, and 1300 to 1600 watt-hours are the high power section.Referring to accompanying drawing 1 and accompanying drawing 2, the utility model comprises low-power control circuit, high power control circuit, and being in series with silicon controlled rectifier voltage regulating circuit T1 after the first main winding L1, series excited machine M, the second main winding L2, the second auxiliary winding L4, the first auxiliary winding L3 are in series constitutes the low-power control circuit again; Be in series with second control circuit T2 again after the first main winding L1, series excited machine M, the second main winding L2 are in series and constitute the high power control circuit; Be provided with the adjustable resistance Rp of the power that is used to regulate series excited machine M among the described silicon controlled rectifier voltage regulating circuit T1; Described second control circuit T2 is in series by negative coefficient thermistor NTCR and K switch 1 and forms, and sees accompanying drawing 2, and when the high power control circuit was in running order, described K switch 1 was in closure state; See accompanying drawing 1, when the low-power control circuit was in running order, described K switch 1 was in the state of disconnection.
Referring to accompanying drawing 3 and accompanying drawing 4, described adjustable resistance Rp comprises conductive metal sheet 4, fixed carbon resister 2, electric connecting sheet 3, resistance adjustment bar 1, described electric connecting sheet 3 is connected with resistance adjustment bar 1, described conductive metal sheet 4 is provided with breakpoint 5, draw the pin of adjustable resistance Rp on the described conductive metal sheet 4, also draw another pin of adjustable resistance Rp on the described fixed carbon resister 2, described electric connecting sheet 3 has two operating states, first operating state is referring to accompanying drawing 3, be electric connecting sheet 3 respectively with the electrical connection of sliding mutually of conductive metal sheet 4 and fixed carbon resister 2, adjustable resistance Rp is in the state of continuous adjustable resistance, this first operating state also is that the low-power control circuit is in running order, and the high power control circuit is in non operating state; Referring to accompanying drawing 4, second operating state is an electric connecting sheet 3 and fixed carbon resister 2 electrical connection of sliding mutually, and electric connecting sheet 3 disengaging conductive metal sheets 4 enter breakpoint 5, be off state between two of adjustable resistance Rp pins under this state, and the contact of resistance adjustment slide bar 1 toggle switch K1 makes K1 be in closed state.Second operating state also is that the high power control circuit is in running order, and the low-power control circuit is in non operating state.
In accompanying drawing 1 and the accompanying drawing 2, C1 is an electric capacity, TRA is a bidirectional triode thyristor, forms thyristor gating circuit by capacitor C 3, capacitor C 2, resistance R 1, bidirectional diode D1, adjustable resistance Rp, and thyristor gating circuit and bidirectional triode thyristor TRA form silicon controlled rectifier voltage regulating circuit T1.The size of regulating the Rp resistance can be controlled the angle of flow of controllable silicon TRA.Because accompanying drawing 1 is the low-power operation state, therefore the harmonic wave that produces is also less, can carry out the power adjustments of series excited machine M with this circuit at 0 to 1300 watt-hour.When the Rp resistance arrogant when the minor adjustment, the power of series excited machine M is also increasing, when the Rp resistance near zero the time, it is maximum that the power output of motor M has reached under low power state, continue to regulate electric connecting sheet 3, then electric connecting sheet 3 enters the position of breakpoint 5, and the Rp resistance becomes infinity suddenly, the contact of resistance adjustment slide bar 1 toggle switch K1 makes K1 be in closed state simultaneously, and this moment, the low-power operation state by motor switched to the high-power operation state.
Because Rp disconnects, so thyristor gating circuit quits work, and controllable silicon TRA also no longer works, and the utility model is in the high-power operation state.Negative coefficient thermistor NTCR resistance when temperature is low is big, and resistance value is little when temperature is high.When K1 is just closed, because the resistance value of negative coefficient thermistor NTCR is bigger, therefore can consume the immediate current of series excited machine M when K switch 1 is closed, after series excited machine M operate as normal, the resistance of negative coefficient thermistor NTCR reduces, then less consumed energy.Under high power state, controllable silicon of no use, therefore minimum generation harmonic wave.
Claims (2)
1, a kind of power adjustments mechanism of household electrical appliance, comprise low-power control circuit, high power control circuit, being in series with silicon controlled rectifier voltage regulating circuit T1 after the first main winding L1, series excited machine M, the second main winding L2, the second auxiliary winding L4, the first auxiliary winding L3 are in series constitutes the low-power control circuit again; Be in series with second control circuit T2 again after the first main winding L1, series excited machine M, the second main winding L2 are in series and constitute the high power control circuit; Be provided with the adjustable resistance Rp of the power that is used to regulate series excited machine M among the described silicon controlled rectifier voltage regulating circuit T1; It is characterized in that: described second control circuit T2 is in series by negative coefficient thermistor NTCR and K switch 1 and forms, when the high power control circuit is in running order, described K switch 1 is in closure state, when the low-power control circuit was in running order, described K switch 1 was in the state of disconnection.
2, the power adjustments mechanism of household electrical appliance according to claim 1, it is characterized in that: described adjustable resistance Rp comprises conductive metal sheet [4], fixed carbon resister [2], electric connecting sheet [3], resistance adjustment bar [1], described electric connecting sheet [3] is connected with resistance adjustment bar [1], described conductive metal sheet [4] is provided with breakpoint [5], draw the pin of adjustable resistance Rp on the described conductive metal sheet [4], also draw another pin of adjustable resistance Rp on the described fixed carbon resister [2], described electric connecting sheet [3] has two operating states, first operating state be electric connecting sheet [3] respectively with the electrical connection of sliding mutually of conductive metal sheet [4] and fixed carbon resister [2], second operating state is an electric connecting sheet [3] and fixed carbon resister [2] electrical connection of sliding mutually, and electric connecting sheet [3] disengaging conductive metal sheet [4] enters breakpoint [5], be off state between two pins of adjustable resistance Rp, and the contact of resistance adjustment slide bar [1] toggle switch K1 makes K1 be in closed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03259021 CN2659024Y (en) | 2003-06-24 | 2003-06-24 | Power regulation mechanism of household electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03259021 CN2659024Y (en) | 2003-06-24 | 2003-06-24 | Power regulation mechanism of household electrical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2659024Y true CN2659024Y (en) | 2004-11-24 |
Family
ID=34328980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03259021 Expired - Lifetime CN2659024Y (en) | 2003-06-24 | 2003-06-24 | Power regulation mechanism of household electrical appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2659024Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100382735C (en) * | 2006-05-19 | 2008-04-23 | 泰怡凯电器(苏州)有限公司 | Wet-type cleaner capable of changing power |
-
2003
- 2003-06-24 CN CN 03259021 patent/CN2659024Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100382735C (en) * | 2006-05-19 | 2008-04-23 | 泰怡凯电器(苏州)有限公司 | Wet-type cleaner capable of changing power |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130624 Granted publication date: 20041124 |