JP2910461B2 - Cleaning strength control method for sanitary washing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary washing device for washing the buttocks of a human body with warm water after stool. For more information,
The present invention relates to a method of controlling a sanitary washing device of a water supply direct supply type, and particularly to a method of controlling washing intensity.

[0002]

2. Description of the Related Art As one of such sanitary washing devices, there is a direct water supply type sanitary washing device in which water (hot water) is jetted from a nozzle tip by tap water pressure (supply water pressure).

[0003] Fig. 2 is a system diagram of a conventional sanitary washing apparatus of a direct water supply type water supply type. Water from the tap water supply pipe 1 passes through the pressure regulating valve 2 and flows into the hot water tank 3 via the solenoid valves A to D. The hot water in the hot water tank 3 is supplied to the nozzle 4 by the water supply pressure.
And is ejected from its tip. The pressure regulating valve 2 has an output pressure characteristic as shown in FIG. 3, and has a water supply pressure in an area a where the output pressure is constant in a normal area.

In this conventional example, the solenoid valves A to D have channel cross-sectional areas of 1 mm ² , 2 mm ² , 4 mm ² , and 8 mm ^{2, respectively.}
It has become. These solenoid valves A to D are opened by a signal from the controller 5. Solenoid valve A to be opened
By combining .about.D, 15 types of cleaning intensities are set as shown in Table 1 below. Five levels are selected from the 15 levels of cleaning strength so that the level of cleaning strength can be selected.

[0005]

[Table 1]

For example, in this conventional example, the five levels of cleaning intensity in Table 1 are selected in advance, and the toilet user selects the desired cleaning intensity with the switches 11 to 15. When the first switch 11 is pressed, only the solenoid valve B is opened, when the second switch 12 is pressed, the solenoid valves A and C are opened, and when the third switch 13 is pressed, the solenoid valve D is opened. Pressing the switch 14 opens the solenoid valves A, B and D, and pressing the fifth switch 15 opens the solenoid valves B, C and D. Hot water is ejected from the nozzle 4 by opening the solenoid valve. When the stop switch 6 is pressed, the valve is closed and the water is stopped.

[0007]

In an area where tap water pressure is low (for example, the top floor of an apartment), the water supply pressure may be low as shown in FIG. Under such a low feed water pressure, if the solenoid valve opening is maintained as shown in Table 1, the jetting strength of the washing water is considerably weak especially in the case of “weakest” or “weak”. It will come out only with so-called chorochoro.

In order to solve such a problem, a booster pump may be provided in the water supply section of the sanitary washing device.
Accordingly, the cost of the sanitary washing device increases.

[0009]

According to the method for controlling the washing strength of a sanitary washing apparatus according to the present invention, the jetting strength of washing water from a washing nozzle is adjusted over m (m is an integer of 2 or more) steps. In the method for controlling the washing strength of a sanitary washing device of a water supply direct supply type, in the sanitary washing device, n (n is an integer greater than m) selectable washing intensities are set in advance and the sanitary washing device is set in accordance with the feed water pressure. The method is characterized in that m stages of the n stages are selected and the cleaning intensity of each m stage is set.

[0010]

In the method of the present invention, when the feed water pressure is low, the valve opening amount is increased at each stage of the washing strength as compared with the case where the feed water pressure is high.

In this way, even if the sanitary washing device is installed in an area where the water supply pressure is low, the amount of spouted water suitable for washing the buttocks at each stage can be obtained.

[0012]

FIG. 1 is a system diagram of a sanitary washing apparatus employing a control method according to an embodiment. In this embodiment, a low supply water pressure area corresponding switch 7 is provided. The five steps of the cleaning intensity before operating the switch 7 are as shown in Table 1 above, but when the switch 7 is operated, the five stages of the cleaning intensity of the controller 5 are changed as shown in Table 2 below. You.

[0013]

[Table 2]

As a result, even in the weakest case, the cross-sectional area of the water channel is almost the same as that of the "medium", and a sufficient amount of washing water can be jetted out even in a low water supply pressure area.

Although the above embodiment relates to a sanitary washing apparatus in which a plurality of solenoid valves are combined, the present invention can also be applied to a sanitary washing apparatus in which the valve opening is adjusted by a step motor or the like. Also in this case, for example, a normal water supply pressure mode having five stages of water passage cross-sectional areas shown in Table 1,
A low water supply pressure area mode having five water passage cross-sectional areas shown in Table 2 is selected, and when installing a sanitary washing device in an area with a low water supply pressure, the low water supply pressure area mode is selected. What should I do?

In the present invention, if a switch for low water pressure is provided in the remote controller for selecting the jetting strength, it is possible to cope with low water pressure without changing the sanitary washing device main body. It is also possible to provide a circuit that detects the pressure of tap water with a pressure sensor and automatically sets the low water pressure mode according to the value.

[0017]

As described above, according to the method for controlling the cleaning intensity of the sanitary washing device of the present invention, even when the sanitary washing device is installed in an area where the water supply pressure is low, a sufficient amount of flushing water is provided. Can be obtained.

[Brief description of the drawings]

FIG. 1 is a system diagram of a sanitary washing apparatus to which an embodiment method is applied.

FIG. 2 is a system diagram of a sanitary washing apparatus to which a conventional method is applied.

FIG. 3 is an output pressure characteristic diagram of a pressure regulating valve.

[Explanation of symbols]

 2 Pressure regulating valve 3 Hot water tank 4 Nozzle 5 Controller 6 Stop switch 7 Low water supply pressure regional switch

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁶ , DB name) E03D 9/00-9/16

Claims (1)

(57) [Claims] 1. A cleaning intensity control method for a sanitary washing device of a water supply direct supply type, wherein the intensity of jetting of washing water from a washing nozzle is adjusted over m (m is an integer of 2 or more) steps. In the cleaning device, n (n is an integer greater than m) selectable cleaning intensities are set in advance, and m out of n stages are selected according to the water supply pressure, and the cleaning intensity of each m stage is selected. A method for controlling the washing strength of a sanitary washing device, characterized in that: