CN2668040Y - Vacuum oeaner governor - Google Patents
Vacuum oeaner governor Download PDFInfo
- Publication number
- CN2668040Y CN2668040Y CNU2003201204732U CN200320120473U CN2668040Y CN 2668040 Y CN2668040 Y CN 2668040Y CN U2003201204732 U CNU2003201204732 U CN U2003201204732U CN 200320120473 U CN200320120473 U CN 200320120473U CN 2668040 Y CN2668040 Y CN 2668040Y
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- vacuum cleaner
- speed changer
- electrochemical capacitor
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Abstract
The utility model discloses a speed regulator for suction cleaner comprising a bidirectional controlled silicon which is connected with a motor of the suction cleaner in series, and a control circuit of angle of flow which is a RC return circuit composed of a series resistor, a potentiometer and a capacitor. The node of the RC return circuit is used as an output point connected to the control electrode of the bidirectional controlled silicon via a bidirectional trigger diode. The utility model is characterized in that: the node of the RC return circuit is connected to a start clamping circuit via a clamping diode, and the start clamping circuit includes an electrolytic capacitor. The circuit of the utility model has simple structure and low cost. The flexible starting of high-power suction cleaner is effectively realized, and the operating reliability of the speed governor is guaranteed.
Description
Technical field
The utility model relates to a kind of electrical adjustment devices of dust catcher, is specifically related to a kind of speed regulator of dust catcher.
Background technology
In household electrical appliance, duster motor is the bigger motor of a kind of power, instantaneous at motor start-up, can produce the big electric current that is several times as much as operating current, at this moment, usually cause falling of line voltage, particularly when the power of dust catcher was big, it is more obvious that voltage falls phenomenon.When motor of dust collector near or higher-wattage greater than 1000W under when starting, its instantaneous voltage falls the requirement that can't satisfy electromagnetic compatibility standard (EMC).
Existing vacuum cleaner speed changer, generally adopt the high thyristor speed control circuit of cost performance, its general structure is, comprise bidirectional triode thyristor and angle of flow control circuit, be provided with the charge circuit of the variable time constant of forming by speed-regulating potentiometer that is used for the speed governing operation and electric capacity in the described angle of flow control circuit.Thus, the user may place speed regulator the higher-wattage position to start, thereby cause voltage to fall above required standard in use.
For addressing this problem, China utility model patent CN24753675Y discloses a kind of vacuum cleaner speed changer, its delay electronic switch of in the central slide arm loop of speed-regulating potentiometer, having connected, described delay electronic switch comprises RC delay circuit and executive component, during startup, electronic switch disconnects, and the travelling arm of speed-regulating potentiometer is inoperative, and motor starts under lower-wattage, after time-delay, electronic switch conducting, but speed-regulating potentiometer normal running, thereby the soft start of realization motor, yet, in this structure, executive component is bidirectional triode thyristor or photoelectrical coupler, and cost is higher.
For reducing cost, China utility model patent CN2496389Y discloses a kind of vacuum cleaner speed changer, it seals in an electronic time-delay switch in the RC charge circuit of former cause potentiometer and integrating capacitor formation, one of parallel connection simultaneously is provided with resistance and guarantees its initial power, this electronic switch is to be made of rectifying block delay circuit and executive component one-way SCR, the voltage that can solve when starting falls problem, and adopts the one-way SCR cost to be lower than last patent.But, this structure uses element still more, simultaneously, because the operating current of electronic switch is taken from charging current extremely limited in the RC loop, the electric leakage of electrochemical capacitor in the circuit and the trigger current of one-way SCR there is certain requirement, also increase technical difficulty, influenced the reliability of vacuum cleaner speed changer work.
Therefore, the soft starting circuit structure of vacuum cleaner speed changer still needs further simplification, raising reliability and reduces cost.
Summary of the invention
The utility model purpose provides that a kind of structure is more simple, cost is low, in the time of satisfying duster motor simultaneously and start voltage is fallen the vacuum cleaner speed changer of requirement.
For achieving the above object, the technical solution adopted in the utility model is: a kind of vacuum cleaner speed changer, comprise bidirectional triode thyristor and angle of flow control circuit, described bidirectional triode thyristor is connected with motor of dust collector, described angle of flow control circuit is the RC loop that comprises that series resistance, potentiometer and electric capacity constitute, the node in described RC loop is as output point, be connected to the control utmost point of bidirectional triode thyristor through bidirectional trigger diode, the node in described RC loop is connected to the start clamp circuit through clamp diode simultaneously, and described start clamp circuit includes electrochemical capacitor.
In the technique scheme, described " angle of flow control circuit " is prior art, controls the opening time of bidirectional triode thyristor by the time constant in RC loop, thereby regulates the power of motor, realizes electric machine speed regulation; Include electrochemical capacitor in described " clamp circuit ", polarity according to electrochemical capacitor is provided with difference, during start, at positive half cycle (or negative half period), resistance in the angle of flow control circuit, the potentiometer loop constitutes first charge circuit, charges to electrochemical capacitor through clamp diode, at this moment, capacitive node voltage in the conducting parallactic angle control circuit is subjected to its clamper and can't raises, bidirectional triode thyristor can not be opened, at negative half period (or positive half cycle), because the buffer action of clamp diode, but angle of flow control circuit operate as normal, bidirectional triode thyristor is opened, thereby, in the short time of start, bidirectional triode thyristor is on the direction and cuts out, the state of opening on another direction is in corresponding half-power state by the motor of its control, after the electrochemical capacitor charging is finished, the clamping action that do not recur, angle of flow control circuit operate as normal.Thus, realize the soft start of duster motor.
Technique scheme has realized soft start with open-and-shut structure, but in implementation process, the leakage current that also exists electrochemical capacitor can influence reliability, and after the shutdown when restarting at once, the electrochemical capacitor discharge influences the defective of soft start effect inadequately, and therefore, further technical scheme is, also comprise second charge circuit that is made of resistance and commutation diode in the described start clamp circuit, described electrochemical capacitor two ends are parallel with resistance.
Wherein, an end of described second charge circuit can be connected to AC power; Also can be connected between the series resistance of angle of flow control circuit.
In the technique scheme, can adopt at the circuit structure of positive half cycle clamper and realize, also can adopt at the circuit structure of negative half period clamper and realize, when positive half cycle clamper, the node in described RC loop is connected to the positive pole of clamp diode, the negative pole of clamp diode is connected with the positive pole of electrochemical capacitor, and the negative pole of electrochemical capacitor is connected to the ground wire of AC power.
When the negative half period clamper, the node in described RC loop is connected to the negative pole of clamp diode, and the positive pole of clamp diode is connected with the negative pole of electrochemical capacitor, and the positive pole of electrochemical capacitor is connected to the ground wire of AC power.
Technique scheme is used to realize the soft start of dust catcher, can cooperate with other circuit, constitutes vacuum cleaner speed changer with better function, and more common a kind of scheme is can also include harmonic wave and suppress circuit.
In the technique scheme, it is dividing frequency control circuit that described harmonic wave suppresses circuit, electric capacity in described RC loop is the capacitance group that at least two capacitances in series are formed, the electronic switch of one of them electric capacity two ends one-period property break-make in parallel, the operating frequency of electronic switch is half of ac power frequency.
Perhaps, it is dividing frequency control circuit that described harmonic wave suppresses circuit, electric capacity in described RC loop is at least two capacitance group that electric capacity composes in parallel, the electronic switch of series connection one-period property break-make in one of them capacitor loop, and the operating frequency of electronic switch is half of ac power frequency.
In the technique scheme, described electrochemical capacitor two ends are parallel with voltage-stabiliser tube.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1. because the utility model is provided with clamp circuit, capacitance voltage when start positive half cycle of moment (or negative half period) in the RC loop is by clamper, bilateral diode can't conducting, thereby make the bidirectional triode thyristor only can conducting work in a half period, starting power when having reduced start has realized soft start;
2. the utility model only need adopt an electrochemical capacitor, a clamp diode and several resistance can realize clamper, and circuit structure is simple, and cost is low;
3. the utility model can charge to the electrochemical capacitor in the clamp circuit by second charge circuit, avoided among the Chinese patent CN2496389Y because the operating current of electronic switch is taken from charging current extremely limited in the RC loop, and, guaranteed the reliability of speed regulator work to the trigger current of the electric leakage of electrochemical capacitor in the circuit and the one-way SCR problem that has certain requirements.
Description of drawings
Accompanying drawing 1 is the circuit theory schematic diagram of the utility model embodiment one;
Accompanying drawing 2 is the circuit theory schematic diagram of embodiment two;
Accompanying drawing 3 is the circuit theory schematic diagram of embodiment three;
Accompanying drawing 4 is the circuit theory schematic diagram of embodiment four;
Accompanying drawing 5 is the circuit theory schematic diagram of embodiment five;
Accompanying drawing 6 is the circuit theory schematic diagram of embodiment six.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: shown in accompanying drawing 1, a kind of vacuum cleaner speed changer, comprise bidirectional triode thyristor BCR1 and angle of flow control circuit, described bidirectional triode thyristor BCR1 connects with motor of dust collector M, described angle of flow control circuit is for comprising resistance R 1, the RC loop that potentiometer RW and capacitor C 2 constitute, the node N in described RC loop is as output point, be connected to the control utmost point of bidirectional triode thyristor BCR1 on the one hand through bidirectional trigger diode D3, positive pole with clamp diode D1 is connected on the other hand, the negative pole of clamp diode D1 connects the positive pole of electrochemical capacitor CD1, and the negative pole of electrochemical capacitor CD1 is connected with the ground wire of AC power.
Present embodiment is when start, during positive half cycle, through resistance R 1, R2, potentiometer RW, clamp diode D1 are to electrochemical capacitor CD1 charging, and at this moment, N point current potential is subjected to M clamping down on of current potential of point and bidirectional triode thyristor BCR1 is opened, during negative half period, because the effect of clamp diode D1, bidirectional triode thyristor BCR1 is opened by the time constant control of resistance R 1, R2, potentiometer RW and capacitor C 2 decisions, thereby starts with half-power at the start-up phase motor.
Embodiment two: shown in accompanying drawing 2, a kind of vacuum cleaner speed changer, comprise bidirectional triode thyristor BCR1 and angle of flow control circuit, described bidirectional triode thyristor BCR1 connects with motor of dust collector M, described angle of flow control circuit is the RC loop that comprises that series resistance R1, R2, potentiometer RW and capacitor C 2 constitute, and is parallel with resistance R 6 on the potentiometer RW
*The node N in described RC loop is as output point, be connected to the control utmost point of bidirectional triode thyristor BCR1 on the one hand through bidirectional trigger diode D3, the positive pole that connects clamp diode D1 in the start clamp circuit on the other hand, the negative pole of clamp diode D1 connects the positive pole of electrochemical capacitor CD1, the negative pole of electrochemical capacitor CD1 is connected with the ground wire of AC power, also comprise second charge circuit that constitutes by resistance R 3, R4 and commutation diode D2 in the start clamp circuit, described electrochemical capacitor CD1 two ends are parallel with resistance R 5, and resistance R 3 is connected to the phase line of AC power.
In the present embodiment, the start clamp circuit is actually a circuit that is made of resistance step-down, diode rectification, electrochemical capacitor filtering and electric resistance partial pressure the simplest.
In actual the use, during start, charge to electrochemical capacitor CD1 in the loop that is made of resistance R 3, R4, diode D2, resistance R 5, electrochemical capacitor CD1 on the one hand, the current potential of its node M progressively raises by zero, to a stationary value (design is at 35-40V), another node N is that the highest M point of also can only following of timing changes at its current potential accordingly at last; On the other hand, in M point current potential uphill process, in the charge circuit that resistance R 1, R2, potentiometer RW and capacitor C 2 constitute, when positive charge, because the effect of following of clamp diode D1, node N goes up current potential and can not raise quickly, therefore, in half period, diac D3 can not be breakdown at several forwards, and controllable silicon BCR1 can not be unlocked.Equally during this period, when reverse charging, because the buffer action of clamp diode D1, M point current potential is to the no effect of N point, and the RC charge circuit is in each cycle equal energy operate as normal, therefore, after start in a period of time, controllable silicon BCR1 is on the direction and closes, and the duty that upwardly opens the opposing party will be near the half-power state by the angle of flow of the residing determining positions of potentiometer RW in the circuit and corresponding power by the motor M of its control.Behind start several cycles or certain hour (about half second get final product by one second), near current potential that M is ordered rises to VD3 (break over voltage of D3), even the charge circuit of control circuit is in the positive charge state, as long as N point current potential is high enough to make bilateral diode D3 to puncture, then can be controlled on this direction and also can be unlocked, after this, the thyristor speed control circuit then enters operate as normal fully, and the start control circuit that is made of second charge circuit and clamp circuit is inoperative fully to it.
Embodiment three: shown in accompanying drawing 3, a kind of vacuum cleaner speed changer, comprise bidirectional triode thyristor BCR1 and angle of flow control circuit, described bidirectional triode thyristor BCR1 connects with motor of dust collector M, described angle of flow control circuit is for comprising series resistance R1, R2, the RC loop that potentiometer RW and capacitor C 2 constitute, the node N in described RC loop is as output point, be connected to the control utmost point of bidirectional triode thyristor BCR1 on the one hand through bidirectional trigger diode D3, the negative pole that connects clamp diode D1 in the start clamp circuit on the other hand, the positive pole of clamp diode D1 connects the negative pole of electrochemical capacitor CD1, the positive pole of electrochemical capacitor CD1 is connected with the ground wire of AC power, also comprise by resistance R 3 in the start clamp circuit, second charge circuit that R4 and commutation diode D2 constitute, described electrochemical capacitor CD1 two ends are parallel with resistance R 5, and resistance R 3 is connected to the phase line of AC power.
The operation principle of present embodiment and embodiment two are basic identical, wherein, because electrochemical capacitor CD1 is opposite with the closure of embodiment two with clamp diode D1, commutation diode D2, clamp circuit plays clamping action at negative half period during start, and in positive half cycle angle of flow control loop operate as normal.
Embodiment four: shown in accompanying drawing 4, a kind of vacuum cleaner speed changer, comprise bidirectional triode thyristor BCR1 and angle of flow control circuit, described bidirectional triode thyristor BCR1 connects with motor of dust collector M, described angle of flow control circuit is for comprising series resistance R1, R2, the RC loop that potentiometer RW and capacitor C 2 constitute, the node N in described RC loop is as output point, be connected to the control utmost point of bidirectional triode thyristor BCR1 on the one hand through bidirectional trigger diode D3, the positive pole that connects clamp diode D1 in the start clamp circuit on the other hand, the negative pole of clamp diode D1 connects the positive pole of electrochemical capacitor CD1, the negative pole of electrochemical capacitor CD1 is connected with the ground wire of AC power, also comprise second charge circuit that constitutes by resistance R 3 and commutation diode D2 in the start clamp circuit, described electrochemical capacitor CD1 two ends are parallel with voltage-stabiliser tube D7, the voltage that N was ordered when the voltage of voltage-stabiliser tube should be a little more than operate as normal, for example, can choose the voltage-stabiliser tube of 36V, resistance R 3 is connected in the RC loop between the resistance R 1 and R2.
Embodiment five: shown in accompanying drawing 5, a kind of vacuum cleaner speed changer, comprise bidirectional triode thyristor BCR1 and angle of flow control circuit, harmonic wave suppresses circuit, described bidirectional triode thyristor BCR1 connects with motor of dust collector M, described angle of flow control circuit is for comprising series resistance R1, R2, potentiometer RW and capacitor C 3, the RC loop that C2 constitutes, capacitor C 3 is connected in series with capacitor C 2, the node N in described RC loop is as output point, be connected to the control utmost point of bidirectional triode thyristor BCR1 on the one hand through bidirectional trigger diode D3, the positive pole that connects clamp diode D1 in the start clamp circuit on the other hand, the negative pole of clamp diode D1 connects the positive pole of electrochemical capacitor CD1, the negative pole of electrochemical capacitor CD1 is connected with the ground wire of AC power, also comprise second charge circuit that constitutes by resistance R 3 and commutation diode D2 in the start clamp circuit, described electrochemical capacitor CD1 two ends are parallel with resistance R 5, and resistance R 3 is connected to harmonic wave and suppresses between the resistance R 9 and R10 in the circuit.
Be parallel with harmonic wave at the two ends of capacitor C 2 and suppress circuit, it is the bidirectional triode thyristor BCR2 that is controlled by electronic switch that described harmonic wave suppresses circuit, electronic switch wherein comprises by resistance R 9, R10, diode D4, D5, voltage-stabiliser tube D6, voltage stabilizing power supply and sampling loop that capacitor C D2 constitutes, adopt a double D trigger IC, carry out waveform shaping by a d type flip flop, another d type flip flop carries out two divided-frequency, thereby control bidirectional triode thyristor BCR2 conducting in one-period, turn-off in another cycle, thereby capacitor C 2 in one-period by short circuit, insert in another cycle, thereby the time constant difference of adjacent periods, and realize that harmonic wave suppresses.
Embodiment six: shown in accompanying drawing 6, and a kind of vacuum cleaner speed changer, circuit and embodiment five are basic identical, and wherein, the electric capacity in the RC loop is formed in parallel by capacitor C 2 and capacitor C 3, and the bidirectional triode thyristor BCR2 that harmonic wave suppresses in the circuit connects with capacitor C 3.
Claims (10)
1. vacuum cleaner speed changer, comprise bidirectional triode thyristor [BCR1] and angle of flow control circuit, described bidirectional triode thyristor [BCR1] is connected with motor of dust collector [M], described angle of flow control circuit is for comprising resistance [R1], the RC loop that potentiometer [RW] and electric capacity [C2] constitute, the node [N] in described RC loop is as output point, be connected to the control utmost point of bidirectional triode thyristor [BCR1] through bidirectional trigger diode [D3], it is characterized in that: the node [N] in described RC loop is connected to the start clamp circuit through clamp diode [D1] simultaneously, and described start clamp circuit includes electrochemical capacitor [CD1].
2. vacuum cleaner speed changer according to claim 1 is characterized in that: also comprise second charge circuit that is made of resistance [R3] and commutation diode [D2] series connection in the described start clamp circuit, described electrochemical capacitor [CD1] two ends are parallel with resistance [R5].
3. vacuum cleaner speed changer according to claim 2 is characterized in that: an end of described second charge circuit is connected to AC power.
4. vacuum cleaner speed changer according to claim 2 is characterized in that: an end of described second charge circuit is connected between the series resistance of angle of flow control circuit.
5. vacuum cleaner speed changer according to claim 1, it is characterized in that: the node [N] in described RC loop is connected to the positive pole of clamp diode [D1], the negative pole of clamp diode [D1] is connected with the positive pole of electrochemical capacitor [CD1], and the negative pole of electrochemical capacitor [CD1] is connected to the ground wire of AC power.
6. vacuum cleaner speed changer according to claim 1, it is characterized in that: the node [N] in described RC loop is connected to the negative pole of clamp diode [D1], the positive pole of clamp diode [D1] is connected with the negative pole of electrochemical capacitor [CD1], and the positive pole of electrochemical capacitor [CD1] is connected to the ground wire of AC power.
7. according to the described vacuum cleaner speed changer of arbitrary claim in the claim 1 to 6, it is characterized in that: can also include harmonic wave and suppress circuit.
8. vacuum cleaner speed changer according to claim 7, it is characterized in that: it is dividing frequency control circuit that described harmonic wave suppresses circuit, electric capacity in described RC loop is the capacitance group that at least two capacitances in series are formed, the electronic switch of one of them electric capacity two ends one-period property break-make in parallel, the operating frequency of electronic switch is half of ac power frequency.
9. vacuum cleaner speed changer according to claim 7, it is characterized in that: it is dividing frequency control circuit that described harmonic wave suppresses circuit, electric capacity in described RC loop is at least two capacitance group that electric capacity composes in parallel, the electronic switch of series connection one-period property break-make in one of them capacitor loop, the operating frequency of electronic switch is half of ac power frequency.
10. vacuum cleaner speed changer according to claim 1 is characterized in that: described electrochemical capacitor two ends are parallel with voltage-stabiliser tube [D7].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201204732U CN2668040Y (en) | 2003-11-05 | 2003-11-05 | Vacuum oeaner governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201204732U CN2668040Y (en) | 2003-11-05 | 2003-11-05 | Vacuum oeaner governor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2668040Y true CN2668040Y (en) | 2005-01-05 |
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ID=34439092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201204732U Expired - Fee Related CN2668040Y (en) | 2003-11-05 | 2003-11-05 | Vacuum oeaner governor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2668040Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532479A (en) * | 2013-11-01 | 2014-01-22 | 科都电气有限公司 | Motor speed controller |
-
2003
- 2003-11-05 CN CNU2003201204732U patent/CN2668040Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532479A (en) * | 2013-11-01 | 2014-01-22 | 科都电气有限公司 | Motor speed controller |
| CN103532479B (en) * | 2013-11-01 | 2016-05-11 | 科都电气有限公司 | A kind of machine governor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |