CN2503834Y - Cordless duster - Google Patents

Abstract

The utility model relates to a cordless dust collector, which comprises a casing body (3), a dust collecting structure, a dust collector motor (4) and storage batteries (6). The utility model is characterized in that the power output line of the storage battery (6) is connected to the input end of a direct current-direct current booster converter (5), the out put end of the direct current-direct current booster converter (5) is connected with the input end of a motor control circuit (7), and the output end of the motor control circuit (7) is connected with the power input end of the dust collector motor (4). Because the direct current-direct current booster converter is used, the low direct current voltage can be converted into a high direct current voltage, thus the collecting efficiency of the dust collector can be greatly improved, the storage batteries can be reduced, and the dust collecting efficiency can be improved.

Description

Cleaner with no rope

The utility model relates to a kind of dust catcher.

In the prior art, dust catcher generally is the dust catcher that power line is arranged, AC power is connected in the alternating current generator of dust catcher by power line, make dust catcher work, but this dust catcher is owing to be subjected to the length restriction of power line, thereby the radius of action of dust suction is limited, and power line also can be subjected to the influence of furniture etc. and wrapping phenomena occur.In order to save power line, in the housing of dust catcher, be provided with batteries, provide energy by battery to direct current generator.Mostly battery is that low-voltage is jumbo, need to drive direct current generator work after many battery series connection, but this will cause the weight of dust catcher and the increase of volume, under the less situation of battery number, if directly drive direct current generator work with battery, then because the voltage of supplying with is lower, be generally 24 to 48 volts, the suction power of dust catcher only is about 20% with the ratio of input power.

The purpose of this utility model is to provide a kind of motor that can drive dust catcher with lower battery tension, makes the motor of dust catcher have higher operating efficiency.

The technical solution of the utility model is: a kind of cleaner with no rope, comprise housing, be arranged at the dust collection mechanism in the described housing, be arranged at the motor of dust collector in the described housing, be arranged at the batteries in the described housing, the power supply output line of described batteries is connected on the input of DC-to-DC booster converter, described DC-to-DC booster converter is for being transformed into the DC low-voltage of input in the converter of dc high voltage, the output of described DC-to-DC booster converter is connected on the input of circuit for controlling motor, and the output of described circuit for controlling motor is connected on the power input of motor of dust collector.

The utility model compared with prior art has following advantage:

Owing to used the DC-to-DC booster converter, therefore can become high DC voltage (for example 220 volts) to low DC voltage (for example 24 volts), consequently the suction efficiency of dust catcher can greatly improve, under the situation that boosts to 220 volts of direct currents, the suction efficiency of dust catcher can reach about 45%, can reduce batteries, improve dust collection efficiency.

The utility model will be further described below in conjunction with drawings and Examples:

Accompanying drawing 1 is a structural front view of the present utility model;

Accompanying drawing 2 is a circuit working functional-block diagram of the present utility model;

Accompanying drawing 3 is the circuit theory diagrams of DC-to-DC booster converter;

Wherein: [1], absorbent brush; [2], dust bag; [3], housing; [4], motor of dust collector; [5], DC-to-DC booster converter; [6], batteries; [7], circuit for controlling motor;

Embodiment: referring to accompanying drawing 1 to accompanying drawing 2, a kind of cleaner with no rope, comprise housing [3], be arranged at the dust collection mechanism in the described housing [3], be arranged at the motor of dust collector [4] in the described housing [3], be arranged at the batteries [6] in the described housing [3], the power supply output line of described batteries [6] is connected on the input of DC-to-DC booster converter [5], described DC-to-DC booster converter [5] is for being transformed into the DC low-voltage of input in the converter of dc high voltage, the output of described DC-to-DC booster converter [5] is connected on the input of circuit for controlling motor [7], and the output of described circuit for controlling motor [7] is connected on the power input of motor of dust collector [4].

Referring to accompanying drawing 3, described DC-to-DC booster converter [5] comprise DC voltage become alternating voltage oscillator, the output voltage of oscillator is carried out the power amplifier of power amplification, transformer that the alternating voltage of power amplifier output is boosted, the alternating voltage of transformer output is carried out rectification and then becomes the rectification circuit of DC voltage.

In the accompanying drawing 3, IC2 is a three-terminal regulator block, and its model is 7812, and ICI is the NAND gate of four two inputs, and its model is 4011.Described oscillator is a multivibrator, by resistance R 1, capacitor C 1, resistance R 2, capacitor C 2 and ic chip 1 are formed, Q1, Q2 is respectively two triodes using as follower, IC1 is delivered to Q1 to oscillator signal respectively, on the base stage of Q2, to improve load capacity, Q3, Q4 is two high-power FETs, Q1, Q2, Q3, Q4 plays the effect of power amplification as power amplifier, after transformer T1 boosts to oscillator signal, by four diode D1, D2, D3, the bridge rectifier that D4 forms becomes DC voltage to AC voltage conversion with the filter circuit of being made up of capacitor C 6, then the DC voltage after this rectification can be delivered to the input of circuit for controlling motor [7], circuit for controlling motor [7] is existing common circuit, mainly is the rotating speed of regulating motor of dust collector [4] is regulated.The voltage of battery generally in being not less than 12 volts, being not more than 48 volts scope, through the voltage behind the DC-to-DC booster converter [5] generally in 70 volts to 230 volts scopes.

In the present embodiment, for further improving the reliability of its work, can also increase various holding circuits and mu balanced circuit.

Claims (2)

1, a kind of cleaner with no rope, comprise housing [3], be arranged at the dust collection mechanism in the described housing [3], be arranged at the motor of dust collector [4] in the described housing [3], be arranged at the batteries [6] in the described housing [3], it is characterized in that: the power supply output line of described batteries [6] is connected on the input of DC-to-DC booster converter [5], described DC-to-DC booster converter [5] is for being transformed into the DC low-voltage of input in the converter of dc high voltage, the output of described DC-to-DC booster converter [5] is connected on the input of circuit for controlling motor [7], and the output of described circuit for controlling motor [7] is connected on the power input of motor of dust collector [4].

2, cleaner with no rope according to claim 1 is characterized in that: described DC-to-DC booster converter [5] comprise DC voltage become alternating voltage oscillator, the output voltage of oscillator is carried out the power amplifier of power amplification, transformer that the alternating voltage of power amplifier output is boosted, the alternating voltage of transformer output is carried out rectification and then becomes the rectification circuit of DC voltage.

Images