JPH02291828A - Central type cleaner - Google Patents

Abstract

PURPOSE:To enable the strength of a suction force to be easily regulated by arranging a voltage converting section for converting an ON/OFF-time from a duty converting section, to voltage, and a phase controlling section for converting voltage signal from the voltage converting section, to an electrification angle and driving a fan motor. CONSTITUTION:For a phase controlling section 24 for driving a fan motor 30, a phase-control-special IC 25 is used, and at the time of sharp low tension, an electrification angle is set to be small, add at the time of high tension, the electrification angle is set to be large. Signal set by an input setting section 1 for setting the input of the fan motor 30 is converted to an ON/OFF-time by a duty converting section 4, and is transmitted to a cleaner main-body 40 through a conductor embedded in a hose body 10, and a conductor set along a piping between a hose spigot 50 and the cleaner main-body 40. The ON/OFF- time signal is converted to voltage by a voltage converting section 21, and it is converted to the electrification angle by the phase controlling section 24 and the fan motor 30 is driven, and so even if a throttle valve is not used, the strength of a suction force can be easily regulated.

Description

Detailed Description of the Invention The present invention relates to a central type vacuum cleaner. The oval configuration and circuit configuration of a conventional vacuum cleaner of the central type are shown in Figures 3 and 4. That is,
The vacuum cleaner main body 100 includes a fan motor 102 and a control circuit 10
3 and a built-in filter 101 for filtering the sucked dust, which can be installed outdoors or under the stairs, etc., and the suction port 104 for sucking the dust can be connected to the hose outlet 111 in each room.
112 and 113 via piping 105,
A hose 122 of a hose unit 120 is connected to any of the hose ports 111, 112, and 113, and an extension pipe 1 is connected to the tip of the hose unit 12 (1).
It has an oval shape to which a floor nozzle 140 is connected via 31 and 132. Hose insertion ports 111, 112
, 113 are arranged along the pipe 105 and connected in parallel to the control circuit 103 in the wooden body 100. Further, an exhaust port 107 is provided in the main body 100 so that the exhaust can be exhausted outdoors or under the floor of a house. When the user turns on the hand switch 121 of the hose unit 120, the control circuit 103 drives the fan motor 102, and the floor nozzle 140 and extension pipe 13
2, 131, hose unit 120, hose insertion ports 111, 112, 113, and piping 105 to suction dust from the intake port 104 for cleaning. A piano wire buried in the hose 122 that also serves as a shape retainer is used as a signal line to notify that the hand switch 121 is ON.

By the way, in recent years, due to changes in the living environment where chopsticks are more difficult to clean, there has been a strong demand for carpet cleaning, and the suction power has become stronger. However, this makes it difficult to clean areas such as curtains and floors that are easier to clean with a smaller suction force. For this reason, a drain hole 123 is provided in a part of the hose unit 120, and the strength of the suction force can be set by adjusting the degree of restriction of the drain hole 123 with a throttle valve 124 and adjusting the air volume appropriately. There is.

Problems to be Solved by the Invention However, in the conventional horizontal construction, wind noise from the throttle valve 124 increases noise, and the central type II+
It becomes impossible to take full advantage of the ``quietness'', which is one of the characteristics of the 1st remover. Furthermore, a vacuum cleaner main body 100 and a hose outlet 1
Piping 10 depending on the distance to 11, 112, 113
The pressure loss of the throttle valve 1 of the hose unit 120 differs depending on the length of the hose.
24 had problems with sound and filtering performance, such as not being able to narrow the aperture sufficiently and making it difficult to filter curtains, floors, etc. The present invention solves the above problems, and aims to provide a central type vacuum cleaner in which the strength of suction force can be easily adjusted without using a throttle valve. Means for Solving the Problems In order to solve the above-mentioned conventional problems, the central type vacuum cleaner of the present invention includes an input setting section for setting the input of the fan motor;
A hose unit with a built-in oscillator that oscillates at an arbitrary frequency, a duty converter that determines the ON/01F time based on the input setting section and the output signal of the oscillator, a hose socket into which this hose unit is inserted, and this hose unit. It is connected to the hose insertion date, and the O from the duty conversion section
It consists of a voltage converter that converts N/011 time into voltage and a #1'1 remover body that has a built-in phase control unit that converts the voltage signal from this voltage converter into a conduction angle and drives the fan motor. ing.

Effect With the above configuration, the signal set in the input setting section is converted into an ON/OF} time at the duty conversion section, and the signal is converted into an ON/OF} time at the duty conversion section, and is transmitted along the conductive wire embedded in the hose unit and the piping between the hose insertion port and the vacuum cleaner body. The OL/θF time signal is transmitted to the vacuum cleaner body through the conductive wire provided, and the OL/θF [time signal is converted to voltage in the voltage converter, which is then converted to a conduction angle in the phase control unit to drive the fan motor. You can easily adjust the strength of the suction force on a vacuum cleaner without using a throttle valve. EXAMPLE An example of the present invention will be described below based on the drawings. FIG. 1 is a circuit diagram of a central type vacuum cleaner of the present invention, and FIG. 2 is a waveform diagram of its main parts.
Reference numeral 1 denotes an input setting section for setting the suction force, and in this embodiment, a variable resistor 5 is used to set the suction force to a low value for high resistance, and conversely, for setting the suction force to be strong for a low resistance. ．． Reference numeral 2 denotes an oscillation section that oscillates at an arbitrary frequency, and in this embodiment, it is composed of an operational amplifier 3 and its peripheral components, and outputs a triangular wave. Further, the resistance value signal from the input setting section 1 and the triangular waveform of the oscillation section 2 are input to the duty conversion section 4, and are converted into a square waveform. At this time, the frequency of the square waveform is equal to the frequency set in the oscillation section 3, but its ON/OFF time changes depending on the resistance value of the input setting section 1. That is, the larger the resistance value of the variable resistor 5, the shorter the ON time, and the smaller the resistance value, the longer the ON time. In this example, oscillation? The oscillation frequency of s2, and therefore the output frequency of the duty converter 4, is the commercial frequency (
50 Mana is set to a higher lκllz than 6011z). These input setting section 1, oscillation section 2, and duty conversion section 4 are built into the hose unit 1/10.

In addition, 21 is a duty conversion section 4 of the hose unit 10.
This is a voltage converter that converts the output ta from the ta to an iκ current voltage. In this embodiment, the resistor 22 and capacitor 23 smooth the square wave. Therefore, if the ON time is short, the voltage will be low. If the ON time is long, the sweat will be high. 24
is a phase control unit that converts the output voltage of the voltage conversion unit 21 into a conduction angle to drive the fan motor 30. In this embodiment, a phase control dedicated 1c25 is used, and when the electric current is low, the conduction angle is small. It is shaped like an ellipse so that it has a large conduction angle when the voltage is high. These voltage conversion section 21, phase control section 24, and fan motor 30 are built into the vacuum cleaner main body 40, and are
It is placed one step below. And the vacuum cleaner body 40
is wired to a hose outlet 50 in each room, and the user inserts the hose unit 10 into the hose outlet 50 for use. Next, the operation will be explained using FIG. 2. If the user does not clean the curtain or the like, if the input setting is set to curtain, ie, high resistance, the ON time of the duty converter 4, which is activated by the triangular waveform from the oscillator 2, will be shortened. This waveform is transmitted from the conductive wire in the hose unit 10 to the voltage converter 21 in the vacuum cleaner main body 40 via the hose insertion port 50, and from the voltage converter g21, a low voltage = is output, and the phase control section 24 drives the fan motor 30 at a small conduction angle corresponding to this, so the suction force becomes weak. On the other hand, if you want to apply tin to a carpet, etc., set the input setting to carpet, that is, low resistance, and then use duty conversion. The ON time of g4 becomes longer, the voltage converter 21 outputs a high voltage corresponding to the ON time, and the phase controller 24 drives the fan motor 30 at a large conduction angle corresponding to this, which increases the suction force. can be made stronger. In this way, the user can change the suction force by changing the settings on the input setting section 1. Additionally, the wiring attached to the pipe between the vacuum cleaner main body 40 and the hose outlet 50 generally generates a floating capacity with the ground, and is susceptible to the influence of commercial frequencies from indoor household wiring. In this embodiment, as described above, since the frequency used in the oscillation section 2 and the duty conversion section 4 is higher than the commercial frequency, stable 1111 division performance without malfunction can be obtained without being influenced by the commercial frequency. ．． Effects of the Invention As described above, according to the present invention, the signal set in the input setting section of the hose unit is turned ON/OFF in the duty conversion section.
This is converted into F time and transmitted to the main vacuum cleaner via a conductive wire embedded in the hose unit and the hose outlet.
This ON/Off time signal is converted into a voltage in the voltage converter, which is converted into a conduction angle in the phase controller to operate the fan motor, so it can be used in central vacuum cleaners without using a throttle valve. The strength of the suction force can be easily adjusted. In addition, by setting the frequency band to be handled higher than the commercial frequency, it is possible to reliably transmit signals from the hose unit to the main unit of the vacuum cleaner without receiving any guidance from indoor wiring, making it possible to stably transmit signals without malfunction. You can get the best cleaning performance.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of a central type vacuum cleaner according to an embodiment of the present invention, Fig. 2 is a waveform diagram of main parts for explaining the operation of the central type vacuum cleaner, and Fig. 3 is a conventional central type vacuum cleaner. FIG. 4 is a circuit diagram of the conventional central type vacuum cleaner. l... Input setting section, 2... Oscillation section, 4... Duty conversion section, 5... Variable resistor, 10... Hose unit, 21... Voltage conversion section, 24... Phase control unit, 30... Fan motor, 4o... Vacuum cleaner body, 5
0...Hose insertion port. Agent Yoshihiro Morimoto

Claims (1)

[Claims] 1. An input setting section that sets the input of the fan motor, an oscillation section that oscillates at an arbitrary frequency, and a duty conversion section that determines the ON/OFF time based on the output signals of the input setting section and the oscillation section. It has a built-in hose unit, a voltage converter that converts the ON/OFF time from the duty converter into voltage, and a phase controller that converts the voltage signal from the voltage converter into a conduction angle to drive the fan motor. a vacuum cleaner body, and a hose insertion port that is connected in communication with the suction port of the vacuum cleaner body and that connects the duty conversion section of the hose unit to the voltage conversion section of the vacuum cleaner body when the hose unit is inserted. A central vacuum cleaner equipped with 2. The central type vacuum cleaner according to claim 1, wherein the output frequency of the oscillation section and the duty conversion section of the hose unit is in a band higher than a commercial frequency.