JPH10276947A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a dust pack from falling into such a state that it is difficult to get its delivery because of the too tightly packed dust which a user is not aware of when cleaning. SOLUTION: This vacuum cleaner is equipped with a motor-driven air blower 7 incorporated in the body of the vacuum cleaner, a temperature detecting means 8 which is installed near the motor-driven air blower 7 and detects the temperature of the motor-driven air blower 7, a switch 3 which turns OFF current running through the motor-driven air blower 7 and a display element 20 which receives a signal from the temperature detecting means 8 to turn the switch 3 ON/OFF and alarms when the internal dust collector of the vacuum cleaner is full with dust. In addition, when the temperature of the motor-driven air blower 7 is high, the full load of the dust collector is alarmed and the operation of the motor-driven air blower 7 is stopped. Thus it is possible to definitely forecast the time for replacing the dust pack.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a vacuum cleaner, which surely displays a dust-filled state.
The present invention relates to improvement of usability for facilitating dust collection such as a garbage pack or dust.

[0002]

2. Description of the Related Art Vacuum cleaners have a dust sensor in a dust collection path of a hand-operated part of the vacuum cleaner along with diversification of objects to be cleaned, such as carpets, and suction according to the amount of dust on a floor or the like. Others control the force or display the presence or absence of debris.

A conventional vacuum cleaner will be described with reference to FIGS. As shown in the figure, 51 is a vacuum cleaner main body, 52 is a hose, 53 is a hand operation unit, 54 is an extension tube, and 55 is a floor suction tool.

The hand operation unit 53 includes a suction force selection switch 56 and a floor selection switch which are powered by electric power supplied from the cleaner body 51 via the hose 52, and a dust sensor and signal processing means. In response to the input from the dust sensor, the signal processing means outputs a phase control signal, which is transmitted to the cleaner main body 51 to control the electric blower 57 to change the suction force. In addition, floor suction device 5
5 includes a vacuum cleaner main body 51, a hose 52,
3 and the electric power supplied through the extension pipe 54 as a power source,
When dust is detected, the presence / absence of dust is displayed, and when a carpet is selected with the floor selection switch, the rotary brush motor 58 is rotated. The suction port is disposed on the bottom surface of the floor suction tool 55, and dust entering from the suction port is collected by the dust collector of the cleaner main body 51 via the extension pipe 54, the hand operation section 53, and the hose 52. . The dust-full display is a spring-type display, which is indicated by the pressure difference between the outside air pressure and the degree of vacuum in the dust collection chamber during operation of the electric blower 57, and was activated when the degree of vacuum in the dust collection chamber was increased. .

[0005]

However, in the above-mentioned prior art, when the suction force selection switch 56 is operated to operate with a weak suction force such as a weak position, the degree of vacuum in the main body dust collection chamber can be displayed as full of dust. The display cannot be displayed because the degree of vacuum has not been reached. In addition, when operated in the high power position, a full dust display is displayed, but the operation is continued as it is, so it is not clear when to replace the garbage pack. There was a problem that it was difficult to take out the garbage and that the garbage pack was broken.

[0006] When the full degree of dust is displayed by the degree of vacuum of the prior art described above, there is a problem that the full dust display is performed even when the suction tool is blocked by large dust.

An object of the present invention is to solve the conventional problems as described above, and it is an object of the present invention to provide a product with improved usability and usability of a vacuum cleaner.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an electric blower built in a vacuum cleaner main body, temperature detecting means for detecting the temperature of the electric blower,
Switch means for interrupting a current flowing through the electric blower, switch switching means for turning on / off the switch means in response to a signal from the temperature detecting means, and dust being filled in the dust collector in the vacuum cleaner body. When the temperature of the electric blower becomes high, the garbage is notified when the temperature of the electric blower is high, and the operation of the electric blower is stopped so that the garbage pack can be replaced or the inside of the vacuum cleaner main body can be notified. The timing for discharging dust collection garbage becomes clear.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be embodied in the form described in each claim. That is, as in the invention according to claim 1 of the present invention, an electric blower built in the main body of the electric vacuum cleaner, temperature detecting means for detecting the temperature of the electric blower, and a switch for interrupting a current flowing through the electric blower. Means, a switch switching means for turning on / off the switch means in response to a signal from the temperature detecting means, and a notifying means for notifying when dust is full in the dust collector in the vacuum cleaner main body. However, when the temperature of the electric blower becomes high, a notification of full dust is issued, and the operation of the electric blower is stopped, so that the time to replace the trash pack or the time to discharge the dust collected in the vacuum cleaner main body is clarified. Become. If a thermistor is used as the temperature detecting means and provided near the electric blower, the temperature of the electric blower can be easily detected. Further, it is preferable to use a holding type mechanism switch with a solenoid as the switch switching means.

Further, as in the invention according to claim 2 of the present invention, an electric blower built in the main body of the electric vacuum cleaner, a dust collecting chamber, and an electric power setting means whose temperature is increased by the electric current of the electric blower are provided outside. Temperature detecting means provided on the shell, a signal processing unit capable of processing a signal from the temperature detecting means and providing a temperature set value for each suction force, and an electric blower according to an output of the signal processing unit Phase control means for controlling the phase, the power setting means for converting the signal by the phase control means into electric power, and a notifying means for notifying when dust is filled in the dust collector in the vacuum cleaner main body. The operation unit has suction force switching means for selecting the suction force of the electric blower, and operates the notification means when a preset temperature is set for each selected suction force. Time to discharge the dust collecting garbage of time to replace or vacuum cleaner within the body of the pack is that there is no difficult to take out full of garbage becomes clear. Note that a bidirectional thyristor can be used for the power setting means, and a photocoupler can be used for the phase control means.

According to a third aspect of the present invention, a current detecting means for detecting a current of the electric blower, a signal from the current detecting means is processed, and a current set value is set for each suction force. A signal processing unit that can be provided, a phase control unit that controls the phase of the electric blower by an output of the signal processing unit, a power setting unit that converts the phase control signal into electric power, and dust is disposed inside the vacuum cleaner main body. Notifying means for notifying when the dust collector is full, and suction force switching means for selecting a suction force of the electric blower,
When the set current preset for each selected suction force is reached, the notification means is operated to clarify the time for replacing the trash pack or the time for discharging the dust collected in the vacuum cleaner main body. No longer becomes difficult to take out.

Further, as in the invention according to claim 4 of the present invention, the state of change of the current is determined, and when the suction port is clogged with dust and changes rapidly, the operation of the electric blower is stopped for a fixed time. After the stop operation is returned to the suction operation after the stop, it is possible to eliminate the trouble of removing the dust that has been sucked when the dust is sucked to the suction tool or temporarily stopping the vacuum cleaner by manual operation.

[0013]

【Example】

(Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. 1, 2 and 3. FIG.

In FIG. 1, a cleaner body 1 includes an upper member 1.
a, the lower member 1b. Reference numeral 2 denotes a bumper, and a holding type mechanism switch 3 with a solenoid having a switch function and switch switching means (hereinafter, referred to as a switch) is disposed on the upper portion of the cleaner body 1. The switch 3 includes a switch movable section 3a and a switch connection section 3 as shown in FIG.
Terminals are provided on the outer shell so as to flow to b and the solenoid 3c. Reference numeral 4 denotes a holding mechanism that is fixed at a pressed position when pressed once and returns to an initial state when pressed again.
The magnet core 5 and the push button 6 are connected. The outer shell of the electric blower 7 has a thermistor as temperature detecting means 8 and is configured to detect the temperature of the electric blower 7.

In FIG. 3 showing the circuit configuration of this embodiment,
Reference numeral 9 denotes a commercial power supply, which serves as a power supply for the electric blower 7, the solenoid 3c, and the DC power supply 10. The switch terminal side of the switch 3 and the electric blower 7 are connected in series to the commercial power supply 9. Further, a DC power supply 10 is connected from a connection point between the switch 3 and the electric blower 7, and when the switch 3 is turned on, it serves as a power supply for the temperature detecting means 8. Switch 3
Is connected in series with the bidirectional thyristor 11 and the commercial power supply 9 as power setting means. Between the T2 and the gate terminal of the bidirectional thyristor 11, the output terminal of the photocoupler 13 is connected via the current limiting resistor 12. The temperature detecting means 8 and the dividing resistor 14 are connected in series to the DC power supply 10, and are connected to the bases of the transistors 17 and 18 via limiting resistors 15 and 16 from the dividing portion. The collector of the transistor 17 is connected to the output side of the DC power supply 10 and the emitter is connected to the photocoupler 13.
Is connected via a limiting resistor 19 to the input side. The collector of the transistor 18 is connected to the output side of the DC power supply 10 via the display element 20, and the emitter is grounded via the resistor 21.

The operation in the above configuration is as follows. When the push button 6 of the switch 3 is pressed, the magnet core 5
The switch movable section 3a is moved via the holding mechanism 4, and the electric blower 7 operates when the switch movable section 3a comes into contact with the switch connection section 3b. Even when the pressing of the push button 6 is stopped, the contact is held by the holding mechanism 4 and the operation state is continued. As the dust is collected and the amount of garbage collected increases and the garbage pack becomes clogged, the air volume of the electric blower 7 is restricted, and the electric blower 7
Temperature gradually rises. Temperature detecting means 8 whose resistance changes when the temperature rises is fixed to the outer shell of the electric blower 7, and the resistance of the temperature detecting means 8 decreases,
When the temperature reaches a certain temperature, the transistor 17 is turned on and a current flows through the display element 20 to perform display. Also, the transistor 17
Is also turned on, and a current flows to the input side of the photocoupler 13. Then, the output side of the photocoupler 13 is switched, a signal is transmitted to the gate terminal of the bidirectional thyristor 11, conduction is established between T1 and T2, and current flows through the solenoid 3c of the switch 3. When a current flows through the solenoid 3c, the magnet core 5 moves and pushes the holding type mechanism 4 again to release the holding state. The switch movable section 3a and the switch connection section 3b do not come into contact with each other, the switch 3 is turned off, and the operation of the electric blower 7 stops. According to the above configuration and operation, when dust accumulates and the air volume is reduced and the cooling effect is lost, an indication is displayed and the electric blower 7 is operated.
Can be stopped, and the time to replace a dust collector such as a garbage pack or a dust bag or the time to discharge trash becomes clear.

(Embodiment 2) Embodiment 2 of the present invention will be described below. 4 and 5, the suction operation selection switch 23 in the hand operation unit 22, the dust full display element 25 illuminated by a signal from the signal processing unit 24 in the upper part of the cleaner body 1, and the temperature detection unit 8 are bidirectional. Thyristor 26
Since the configuration other than that provided in the outer shell is the same as that of the first embodiment, the description is omitted.

In FIG. 5 showing the circuit configuration of the present embodiment,
Reference numeral 9 denotes a commercial power supply, which serves as a power supply for the electric blower 7 and the DC power supply 10. The electric blower 7 and the bidirectional thyristor 26 are connected in series to the vacuum cleaner main body 1 and the commercial power supply 9. The DC power supply 10 includes a signal processing unit 24 and a dust full display element 25.
And the power supply for the temperature detecting means 8. A suction force selection switch 23 for selecting a suction force is connected to the hand operation unit 22 via a resistor 27 and the output side of the DC power supply device. Is connected to the signal processing unit 24 via the. The temperature detecting means 8 is connected from the output side of the DC power supply device 10 via a dividing resistor 29, and is connected from the dividing portion to a signal processing unit via a limiting resistor 30. The dust-full display element 25 is connected to the resistor 31 from the output side of the DC power supply 10.
And is connected to the signal processing unit 24. Reference numeral 32 denotes an AC synchronization generating signal means, which uses a DC power supply as a power supply and inputs a reference for phase control to the signal processing unit 24.
The output terminal of the photocoupler 34 is connected via a current limiting resistor 33 between T2 and the gate terminal of the bidirectional thyristor 26 as the power setting means. The input terminal is connected to the signal processing unit 24 via the limiting resistor 35.

The operation in the above configuration is as follows. Suction force selection switch 2 arranged on hand operation unit 22
When 3 is pressed, the signal processing unit 24 outputs a phase control signal to the secondary side of the photocoupler 34. At the phase angle, the primary side performs a switching operation, and the signal is input to the gate terminal of the bidirectional thyristor 26 as the power setting means, and T1,
T2 is short-circuited, and the electric blower 7 rotates. The outer shell of the bidirectional thyristor 26 as the power setting means is connected to the fins 36 as shown in FIG. 6, and the fins 36 are arranged at positions where the air blower 7 receives the air flow and are cooled. As the amount of dust collected gradually increases as the cleaning is performed, the outer shell of the bidirectional thyristor 26 loses the cooling effect of the electric blower 7 and the temperature gradually increases.
When the temperature is detected by the temperature detecting means 8 fixed to the outer shell of the bidirectional thyristor 26 and exceeds a set value provided in the signal processing section 24, the dust full display element 25 is turned on. In addition, by selecting the suction force selection switch 23,
The signal processing unit 24 has respective temperature set values in advance by the suction force such as medium or weak, and performs the above-described operation for all the suction forces. In addition, it is easy to carry out notification by a buzzer as a notification means. By performing the above-described configuration and operation, when dust accumulates, the air volume decreases, and the cooling effect is lost, a display is displayed, the suction force can be changed, and the time for replacing a dust collector such as a dust pack becomes clear.

(Embodiment 3) FIG.
This will be described with reference to FIG. The external appearance of the vacuum cleaner is the same as that of the second embodiment, and therefore will not be described. Reference numeral 9 denotes a commercial power supply, which serves as a power supply for the electric blower 7 and the DC power supply 10. An electric blower 7, a bidirectional thyristor 26, and a current sensor as a current detecting means 37 are connected in series to the commercial power supply 9 of the cleaner main body 1. The DC power supply 10 includes a signal processing unit 24 and a dust-full display element 2.
5 power supply. The secondary side of the current detecting unit 37 is connected to the rectifying unit 38 and the signal processing unit 24
It is connected to the. The following circuit configuration is the same as that of the second embodiment and will not be described.

The operation in the above configuration is as follows. Suction force selection switch 2 arranged on hand operation unit 22
When 3 is pressed, the signal processing unit 24 outputs a phase control signal to the secondary side of the photocoupler 34. At the phase angle, the primary side performs a switching operation, and the signal is transmitted to the bidirectional thyristor 2.
The electric blower 7 is inputted to the gate terminal of No. 6 and short-circuited between T1 and T2, and the electric blower 7 rotates. As the amount of dust collected gradually increases as the cleaning is performed, the air volume decreases, and the current value of the electric blower 7 gradually decreases. The current value is detected by the current detection means 37, rectified, smoothed, and input to the signal processing unit 24 as a voltage. When the voltage exceeds a preset value set in the signal processing unit 24, the dust full display element 25 is turned on and the operation of the electric blower 7 is stopped. Further, the signal processing unit 24 has respective current setting values according to the suction force such as strong, medium, or weak by the selection of the suction force selection switch 23, and performs the above operation for all the suction forces. By performing the above-described configuration and operation, when dust is accumulated and the current value becomes small, a display is made, the suction force can be changed, and the time for replacing a dust collector such as a dust pack becomes clear.

Embodiment 4 Hereinafter, Embodiment 4 of the present invention will be described with reference to FIG. The external appearance and the circuit configuration of the vacuum cleaner are the same as those in the third embodiment, and a description thereof will be omitted.

The operation in the above configuration is as follows. As the amount of dust collected by cleaning increases gradually, the air volume decreases, and the current value of the electric blower 7 shown in FIG. 7 gradually decreases. The current value is input to the signal processing unit 24 as a voltage. When the voltage exceeds a set value provided in the signal processing section 24, the dust full display element 25 is turned on and the operation of the electric blower 7 is stopped. In addition, the signal processing unit 24 always recognizes the voltage, and can determine whether the smoothed voltage has gradually decreased or has instantaneously decreased. When dust gradually accumulates as shown in FIG. 8 (a), the smoothing voltage gradually decreases accordingly. However, when dust is cleaned as shown in FIG. When the suction port is prevented by, for example, the current changes rapidly, and the smoothed voltage changes. The signal processing unit 2
Reference numeral 4 determines whether the dust is full or the suction port is clogged. When it is determined that the dust is full, the dust full indicator element 25 is turned on and the operation of the electric blower 7 is stopped. When it is determined that the suction port is clogged, the operation of the electric blower 7 is stopped for a certain period of time.
Also, the operation automatically returns to start the operation. By performing the above configuration and operation, when dust is accumulated and the current value gradually decreases, a display is displayed, the suction force can be changed, and not only the dust pack replacement time becomes clear, but also dust is sucked. By temporarily stopping when sucking on the tool and re-operating when the sticking is released, it is possible to eliminate the trouble of removing dust sucked on the suction tool and temporarily stopping the vacuum cleaner manually.

[0024]

As is apparent from the above description, according to the first aspect of the present invention, the dust collector inside the vacuum cleaner is full of dust, and the electric blower has no cooling effect. When the temperature reaches or exceeds the value, a garbage full display is displayed,
In addition, by stopping the operation of the electric blower, the dust collection capacity of the garbage pack stops at an appropriate level, and the garbage pack can be easily replaced. In addition, an excellent vacuum cleaner can be realized in which the shutter of the garbage pack can be easily performed and the garbage pack does not run out of the garbage pack, and the garbage pack can be exchanged cleanly.

According to the invention described in claim 2 of the present invention, when the dust at each operation position becomes full and the cooling effect of the electric blower is lost, the dust full display is performed when the temperature becomes higher than a set value, and Stopping the suction operation ensures that the full, medium, and weak suction powers are fully displayed, and the timing for replacing the trash pack or discharging the dust collection is clear, further improving usability. Vacuum cleaner can be realized.

According to the third aspect of the present invention, the dust at each operation position becomes full and the current value decreases, and when the current falls below the set current, the dust full display is performed and the suction operation is performed. By stopping, strong,
The display of full dust with all the suction powers in the middle and low is reliably performed, the timing of replacing the dust pack or the time of discharging the dust collection dust becomes clear, and an excellent vacuum cleaner with improved usability can be realized.

According to the invention of claim 4 of the present invention, by recognizing a change state of the current of the electric blower, it is determined whether the dust is full or the suction port is clogged with the dust. In the case of dust, the operation of the electric blower is stopped for a certain period of time, and after the stop, the suction operation is resumed.When the dust is full, the dust full display and operation stop are performed, so that when the dust is blocked, the pause is stopped. By doing so, garbage can be eliminated, and an excellent vacuum cleaner with improved usability can be realized.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of an internal configuration of a switch used in the vacuum cleaner.

FIG. 3 is a block diagram of a control device of the electric vacuum cleaner according to the first embodiment of the present invention.

FIG. 4 is a perspective view of a vacuum cleaner according to a second embodiment of the present invention.

FIG. 5 is a block diagram of a control device of the vacuum cleaner.

FIG. 6 is an explanatory diagram of a cooling operation of a power setting unit of the vacuum cleaner.

FIG. 7 is a block diagram of a control device for a vacuum cleaner according to a third embodiment of the present invention.

FIG. 8 is an explanatory diagram of an operation of a vacuum cleaner according to a fourth embodiment of the present invention.

FIG. 9 is a perspective view of a conventional vacuum cleaner.

FIG. 10 is a block diagram of a control circuit of the vacuum cleaner.

[Explanation of symbols]

Reference Signs List 3 switch (switch with switch switching means) 7 electric blower 8 temperature detecting means 10 DC power supply 11 bidirectional thyristor (power setting means) 23 suction power selection switch (suction power switching means) 24 signal processing unit 25 dust full display element (Notification unit) 32 AC synchronization generation signal unit 34 Photocoupler (phase control unit) 37 Current detection unit

Claims (4)

[Claims] 1. An electric blower built in a main body of a vacuum cleaner, and temperature detecting means for detecting a temperature of the electric blower,
Switch means for interrupting a current flowing through the electric blower, switch switching means for turning on / off the switch means in response to a signal from the temperature detecting means, and dust fully accumulating in the dust collector in the vacuum cleaner main body. An electric vacuum cleaner, comprising: a notifying unit for notifying when the temperature of the electric blower becomes high, performing a notification of full dust and stopping the operation of the electric blower. 2. An electric blower built in the main body of the electric vacuum cleaner, a dust collecting chamber, a temperature detecting means provided on an outer shell of a power setting means for increasing a temperature by a current of the electric blower, and the temperature detecting means. A signal processing unit capable of processing a signal from the unit and providing a temperature set value for each suction force; a phase control unit for controlling a phase of the electric blower according to an output of the signal processing unit; and the phase control unit The power setting means for converting the signal to the electric power, the notifying means for notifying when dust is full in the dust collector in the vacuum cleaner main body, and the suction for selecting the suction force of the electric blower in the operation unit. A vacuum cleaner comprising a force switching means, wherein the notifying means is operated when a preset temperature is set for each selected suction force. 3. A current detecting means for detecting a current of the electric blower, a signal processing unit for processing a signal from the current detecting means and providing a current set value for each suction force, and the signal processing. A phase control means for controlling the phase of the electric blower by an output of the unit, a power setting means for converting the phase control signal into electric power, and a notification when dust is filled in the dust collector in the vacuum cleaner main body. Informing means, and a suction force switching means for selecting a suction force of the electric blower, configured to operate the notification means when the set current is set in advance for each selected suction force. Vacuum cleaner to do. 4. The method according to claim 1, wherein the state of change of the electric current is judged, and when the suction port is clogged with dust and suddenly changes, the operation of the electric blower is stopped for a predetermined time, and then the stop operation is returned to the suction operation. The vacuum cleaner according to claim 3, wherein the vacuum cleaner is configured as follows.