CN2502633Y

CN2502633Y - Intelligence speed-changing vacuum cleaner

Info

Publication number: CN2502633Y
Application number: CN 01253317
Authority: CN
Inventors: 周伦舜
Original assignee: FUDA ELECTRIC Co Ltd NINGBO
Current assignee: FUDA ELECTRIC Co Ltd NINGBO
Priority date: 2001-08-27
Filing date: 2001-08-27
Publication date: 2002-07-31
Anticipated expiration: 2011-08-27

Abstract

The utility model relates to an intelligent and speed-varying vacuum cleaner: a vacuum cleaner body is provided with a motor governor; a pressure detector FQ is arranged at the place where the motor governor is; the pressure detector FQ is used as an automatic switch element in a control circuit of the motor governor; the wall of a duct collecting chamber of the vacuum cleaner is provided with a pressure detecting hole, and the pressure detector FQ and the pressure detecting hole are connected through a hose. The control circuit of the motor governor consists of a silicon control rectifier (SCR) that is connected in series with the motor and a single steady triggering circuit that is connected with the triggering end thereof; the pressure detector FQ is connected in parallel with some resistances in a resistance capacitance phase shifting network in the single steady triggering circuit. When a floor brush is collecting dusts close to the floor or a blanket, an air inlet of the floor brush is obstructed, thereby the negative pressure in the dust collecting chamber rises; the pressure detector FQ is closed and the resistances connected in parallel with the pressure detector are in a short circuit state, thus the resistance capacitance phase shifting network that determines the delayed time of the single steady triggering circuit is decreased, and the maximum power of the motor is acquired, and the suction force of the vacuum cleaner is enhanced, meeting the actual requirement and reducing wasted electricity.

Description

A kind of intelligent speed changing dust catcher

Technical field

The utility model relates to a kind of dust catcher, particularly relates to a kind of intelligent speed changing dust catcher.

Background technology

Existing domestic suction cleaner, such phenomenon appears during use, when the scrubbing brush of dust catcher was attached to ground or carpet dust suction, power input to a machine diminished, when scrubbing brush built on stilts or carpet, power input to a machine has risen again, that is to say that when needs were high-power, the power of motor was on the contrary little, and when only needing small-power, power is big on the contrary.This be because, what existing dust catcher adopted is series excited machine, its load is a blower fan, when scrubbing brush is attached on ground or the carpet dust suction, the scrubbing brush air inlet is obstructed, and the air that enters blower fan is reduced, and has reduced the air drag of draught fan impeller relatively, therefore the blower fan load alleviates and the rotating speed lifting, and power input to a machine descends simultaneously; And when scrubbing brush built on stilts or carpet, scrubbing brush air inlet standard-sized sheet, air mass flow heightens, and has increased the load of blower fan relatively, so rotation speed of fan descends, and power input to machine heightens.Therefore, in this case, the waste of the reactance capacity of motor greatly.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of intelligent speed changing dust catcher, and it can regulate the power of motor in the dust catcher according to actual needs automatically, reduces reactance capacity.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: be provided with machine governor in body of dust collector, and be provided with an air pressure detector FQ in the position at this machine governor place, this air pressure detector FQ is as an automatic switch element in the machine governor control circuit, on the control of dust locular wall of dust catcher, have simultaneously an air pressure and detect the hole, and be communicated with described air pressure detector FQ and air pressure detection hole by a sebific duct;

Described machine governor control circuit is by constituting with the controllable silicon SCR of motor joining and the single-shot trigger circuit that links to each other with its trigger end, have the capacitance-resistance phase-shift network of its monostable delay time of decision in this single-shot trigger circuit, described air pressure detector FQ is promptly in parallel with the part resistance in this capacitance-resistance phase-shift network.

When scrubbing brush is attached to ground or carpet dust suction, the scrubbing brush air inlet is obstructed, make the negative pressure in the dust storage chamber rise, air pressure detector FQ closure, will with its parallel resistor short circuit, so the decision monostable delay time capacitance-resistance phase-shift network RC value reduce, triggering signal can be advanced to the 0.1ms place after the civil power zero passage, make the complete power supply wave shape of controllable silicon SCR conducting output, thereby make motor obtain peak power, strengthen the suction of dust catcher; And when when scrubbing brush built on stilts or carpet, scrubbing brush air inlet standard-sized sheet, air mass flow heightens, make the negative pressure in the dust storage chamber descend, air pressure detector FQ closure is opened, the part of capacitance-resistance phase-shift network become heavily again by the resistance of its short circuit, the RC value increases, triggering signal can be delayed between 3.5ms～7.5ms after the civil power zero passage, make the power supply wave shape of a controllable silicon conducting output, thereby the power of motor is reduced, generally be set in about about eighty per cant rated value, and in this scope, also can carry out manual governing by the resistance of regulator potentiometer VR.

Therefore, compared with prior art, the utility model is by carrying out detection of dynamic to the negative pressure in the suction passage, and the power of self-regulation motor makes its just in time realistic demand, and is big when this is big, little when this is little, thereby reduces waste of electric energy.

Description of drawings

Fig. 1 is a structure cross-sectional schematic of the present utility model (part);

Fig. 2 is a machine governor control circuit schematic diagram of the present utility model.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As shown in Figure 1, 2, the intelligent speed changing dust catcher is provided with machine governor 1 in its body, and be provided with an air pressure detector 2 (FQ) in the position at this machine governor 1 place, on dust storage chamber 6 walls of dust catcher, have simultaneously an air pressure and detect hole 4, and be communicated with described air pressure detector 2 (FQ) and air pressure detection hole 4 by a sebific duct 3;

Described machine governor control circuit is by constituting with the controllable silicon SCR of motor M OTOR serial connection and the single-shot trigger circuit that links to each other with its trigger end, this single-shot trigger circuit comprises transformer TRANS, rectifier bridge V2-V5 reaches and is the single-shot trigger circuit of core by time base circuit U1 (can adopt 555 integrated), wherein resistance R 3, R4, R5, the capacitance-resistance phase-shift network that potentiometer VR and capacitor C 3 constitute, the R end of U1 is through resistance R 3, variable resistor VR, resistance R 4 connects the DIS end of U1, the DIS end of U1 connects the THR end of U1 through resistance R 5, the THR end of U1 is simultaneously again through capacitor C 3 ground connection, and the Q of U1 holds then through capacitor C 2, transformer B is coupled to the silicon controlled trigger end; Described air pressure detector FQ is promptly in parallel with resistance R 3;

When the 2 pin TR of U1 hold when the civil power zero cross signal arrives, 3 pin Q end, the 7 pin DIS end of U1 are high level, power supply is through the resistance R in the phase-shift network, C3 charges to capacitor, and the C3 current potential is by ashamed rising, when the level on the C3 〉=2/3Vcc, the U1 upset, the saltus step of 3 pin Q end is a low level, exports a negative pulse and triggers controllable silicon SCR through B, makes controllable silicon SCR conducting at this moment;

In this circuit, monostable delay time is: t=1.1RC,

In the formula, the R value in the capacitance-resistance phase-shift network circuit is the sum total of resistance R 3, speed-regulating potentiometer VR, resistance R 4, R5;

Change the numerical value of VR, can change the negative pulse output time of time base circuit U1, the negative pulse output time that makes time base circuit at this circuit parameter is between the 3.5ms--7.5ms after the civil power zero passage, and Here it is triggers the time district of controllable silicon SCR conducting, also is the manual governing scope of motor.

From the manual governing parameter as can be seen, during high speed position (3.5ms), motor does not really operate in the peak power state, therefore by resistance R in the capacitance-resistance phase-shift network circuit 3 and air pressure detector FQ and after connecing, when the scrubbing brush ground proximity of dust catcher, vacuum rises in the airflow obstruction of scrubbing brush suction inlet, machine; When vacuum rises to certain value, air pressure detector FQ closure, resistance R 3 is by short circuit, so the RC value of timing circuit reduces, the output negative pulse time advances to the 0.1ms place after the civil power zero passage, controllable silicon SCR conducting this moment, export complete power supply wave shape, make motor obtain peak power, thereby make extraneously when needing high-power dust suction, the power of dust catcher can cooperate synchronously.

A kind of physical circuit of single-shot trigger circuit only is provided in the above-described embodiments; but according to design of the present utility model; as long as it is will this described air pressure detector FQ in parallel with the part resistance that has in the capacitance-resistance phase-shift network of its monostable delay time of decision in the single-shot trigger circuit; can realize the purpose of this utility model, these are all within protection domain of the present utility model.

Claims

1, a kind of intelligent speed changing dust catcher, it is characterized in that: in body of dust collector, be provided with machine governor, and be provided with an air pressure detector FQ in the position at this machine governor place, this air pressure detector FQ is as an automatic switch element in the machine governor control circuit, on the control of dust locular wall of dust catcher, have simultaneously an air pressure and detect the hole, and be communicated with described air pressure detector FQ and air pressure detection hole by a sebific duct.

2, intelligent speed changing dust catcher according to claim 1, it is characterized in that: described machine governor control circuit is by constituting with the controllable silicon SCR of motor joining and the single-shot trigger circuit that links to each other with its trigger end, have the capacitance-resistance phase-shift network of its monostable delay time of decision in this single-shot trigger circuit, described air pressure detector FQ is promptly in parallel with the part resistance in this capacitance-resistance phase-shift network.

3, intelligent speed changing dust catcher according to claim 2, it is characterized in that: described controllable silicon SCR circuits for triggering comprise that it is the single-shot trigger circuit of core that transformer TRANS, rectifier bridge V2-V5 reach by time base circuit U1, the capacitance-resistance phase-shift network that constitutes of resistance R 3, R4, R5, potentiometer VR and capacitor C 3 wherein, the R end of U1 connects the DIS end of U1 through resistance R 3, variable resistor VR, resistance R 4, the DIS end of U1 connects the THR end of U1 through resistance R 5, the THR end of U1 is simultaneously again through capacitor C 3 ground connection, and the Q of U1 end then is coupled to the silicon controlled trigger end through capacitor C 2, transformer B; Described air pressure detector FQ is promptly in parallel with resistance R 3.