JPS61280823A - Central cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention A) Industrial Application Field The present invention relates to a central cleaner which has a plurality of hose outlets, and each hose outlet is connected to a vacuum cleaner main body C. ≦Two things are related.

Conventional technology Central cleaners are generally installed in areas where the main body of the vacuum cleaner is installed separately, and the piping that connects them is placed in a location that is out of sight, such as under the floor, in the ceiling, or between the inner and outer walls for aesthetic reasons. ; It is placed.

It is very effective to detect the pressure at each part of the vacuum cleaner body, such as at this slanted hose insertion port or during piping, in terms of detecting the vacuum cleaner's suction condition or abnormality. For example, as disclosed in Utility Model Application Publication No. 60-12351 C; piping (:
Plural pressure switches are provided, and the open/close state of these switches is C: to detect the position of dirt clogging in the piping, or Utility Model Application No. 53-141776! = As disclosed, it is equipped with a pressure detection part that detects the pressure inside the pipe, and if the pressure inside this pipe is below a predetermined value, that is, the amount of collected dust is above a predetermined value, and the operation is over a predetermined time, the blower inside the vacuum cleaner body is stopped. Is there anything I can do?

However, unlike non-adjustable vacuum cleaners, central cleaners cannot freely move the hose outlet, so they use a hose that is several times longer than non-adjustable vacuum cleaners. The possibility of dust clogging occurring in the floor movable vacuum cleaner C is higher than that in floor movable vacuum cleaner C, and it is difficult to determine whether it is in the middle of the hose or piping, and countermeasures must be taken to prevent this from occurring.\Safe operation of the central cleaner ≦Two problems It had the disadvantage of causing

C] Problems that the invention attempts to solve The present invention was made in view of the above two points.

The object of this invention is to safely operate a central cleaner by making it possible to detect dirt clogging in the hose section.

2) Means for solving the problem The present invention has a plurality of hose outlets, and each hose outlet is connected to the vacuum cleaner body by piping, and the pressure of each hose outlet is detected. It is equipped with a pressure detection section and a time measurement means, and when the pressure of each hose insertion port is maintained at a predetermined pressure or more and for a predetermined time or more.

It is determined that the hose connected to the hose insertion port is clogged with dirt, and a display means (2) is displayed to indicate this, and the operation of the vacuum cleaner body is stopped.

(f) Example Embodiments of the present invention will be described below based on Drawing C2.

9I! Figure 11 (1) shows a structure in which the central cleaner of the present invention is installed, such as a house, under the floor of the house (2). The piping (3) (two or more hose inlets (4) (4)...l: connection is provided. (5) is near each of the hose inlets (4); The 9th circuit section includes a pressure detection section for the hose insertion port, a signal detection section for the hose sauce hand switch section (6), and a display section such as an LED, as well as a central processing unit (7) and an input/output board section (8). ℃ signal line (9
) l; The input/output boat section (8
) is an A/D converter for the pressure detection unit signal or hand switch unit signal, a D/A converter for sending an analog signal to the vacuum cleaner old product control circuit u (lI), and a LIIED.
It includes display control circuits such as. Central processing unit (7
) is connected to a storage device (11) and is capable of storing, inputting and outputting required data. The input/output boat section (8) C2 is connected to the pressure detection section @ before and after the filter of the dust collection section of the vacuum cleaner main body (2), and is also connected to the vacuum cleaner control circuit tlG, and the central processing unit The output signal 8 of 1Ii (7) is D/A converted to control the blower.

Each of the hose insertion ports (4) has the configuration shown in FIG. 2,
The front panel α4 integrally formed with the hose holding portion α3 is fixed to the floor or wall surface -C: with screws or the like. Hose holding part (1
Install the rubber gasket 4 on the piping (3) side of No. 3 (2), fix it with the metal fittings (17), and install the piping (3) (two-pressure type or insert it).

At this time, the rubber gasket 1E9 (2) can prevent air leakage at this part.The board (18) of the circuit section (5)
) are screws etc. through the metal fittings (1'le C: than the front panel α (
The pressure sensor (2) fixed on the back side C2 of (a) and installed on the board αa is connected to the rubber seal field and a metal fitting (the hole drilled in lη and the pressure transmission vibrator Q1) to detect the pressure at this part.

To use the hose, open the lid Q of the hose insertion port (4) by hand and insert the hose holding part α. At this time, the flexible hose (24 hand switch part (6) (2) built-in variable resistor or switch is
It is connected to the two steel strips of C: Hose insertion part @ a pair of pins 51m, and this pin is in contact with the pair of terminals, so through the signal wire @, (9), The state of the switch or variable resistor is read into the central processing unit (7) via the input/output port section (8). Also, when the hose insertion part 2υ is inserted into the hose holding part (1, 1), the stopper (
28C: The hose insertion part Qz is fixed.

If you want to remove this, press the operation button G! 3f: Push the stopper down and pull it out. When the hose outlet (4) is removed, the cover (2) of the hose outlet (4) comes into close contact with the front panel (α2) than the spring (2). The hose insertion part is a flexible hose C! Pull: Connected.

This C: Connect pipe 3 to the floor suction and clean it.

For those with variable blower input, there is a hand switch section (6
) as a variable resistor and change its resistance value (Secondly, the central processing unit f (71) reads the change through the input/output port section (8), performs arithmetic processing, and outputs the required output to the input/output port section. (8) through the vacuum cleaner control circuit C1 (IC; provides and adjusts the input of the vacuum cleaner blower;

In the above configuration (2), the pressure at each hose insertion port (4) increases only when the floor suction tool c32 comes into close contact with the floor surface or when dirt is clogged in the middle of the hose. Even if there is no cover (c) of the hose inlet (4), the same thing will happen if the vacuum cleaner is operated (; the pressure will rise, but the flexible hose (c) of the hose inlet (4) is closed). If it is not inserted, the vacuum cleaner will generally not operate.If there is no dirt clogging in the middle of the hose, that is, during normal use, the pressure change at the hose insertion port (4) will be +$3 figure. This changes with time as shown in Figure 4. This is because the state of adhesion of the floor suction tool C12 to the floor changes.However, if a dirt clog occurs at C2 in the middle of the hose, the difference between each hose will change as shown in Figure 4. The pressure at the inlet (4) increases and the pressure change due to the change in the adhesion state of the floor suction tool 34 to the floor surface is also extremely small.
4) It is possible to detect dirt clogging in the hose depending on whether or not the pressure is maintained above a certain pressure for a predetermined period of time.

And if there is garbage clogging in the middle of the hose! −
The command signal C from the central processing unit (7) notifies the user through the buzzer installed on the board (181c) of the circuit section (5), and also causes the blower to operate from the vacuum cleaner control circuit A1. In this embodiment, a buzzer is used as the display means, but a CRT or LED display may be used to notify the user of the clogging of garbage in the hose.

FIG. 5 is a flowchart showing the operation flow of the central cleaner according to the present invention C;

[Effects of the Invention] As described above, the present invention detects the pressure at each hose insertion port, detects dirt clogging in the middle of the hose based on the pressure state, and displays (notifies) that fact.≦: It is possible to provide a central cleaner with excellent usability and high safety by stopping the operation of the blower.

[Brief explanation of the drawing]

Fig. 1 is a system configuration diagram of the central cleaner of the present invention, Fig. 2 is a cross-sectional view of the main part of the hose inlet, Fig. 3 is a characteristic diagram of pressure changes at the hose inlet during normal use, and Fig. 4
The figure is a characteristic diagram of the pressure change at the hose insertion port in case dirt is clogged in the middle of the hose, and FIG. 5 is a flowchart showing the flow of the operation of the central cleaner. (2)... Vacuum cleaner body, (3)... Piping, (4)...
・Hose outlet.

Claims (1)

[Claims] 1) It has a plurality of hose outlets, each hose outlet is connected to the vacuum cleaner body by piping, and is equipped with a pressure detection section and time measuring means for detecting the pressure of each hose outlet, and each hose If the pressure at the outlet is greater than a predetermined pressure and maintained for a predetermined time, it is determined that the hose connected to the hose outlet is clogged with dirt, and a display means displays this fact, and the vacuum cleaner body A central cleaner characterized by stopping operation.