JPH0353750Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an apparatus for discharging an aqueous detergent solution to wash an object to be washed.

A device shown in FIG. 1 is conventionally known as this type of device. That is, in the cleaning device 1,
A water tank 4 receives water from a water source 2 such as tap water via a ball tap 3, a detergent tank 5 stores cleaning liquid, and is connected via a ball tap 7 to a mixer 6 that communicates with the water source 2 and the detergent tank 5. a detergent water tank 8 for storing the detergent aqueous solution from 6;
A pump 11 is connected to the water tank 4 and the detergent water tank 8 through electromagnetic valves 9 and 10, respectively, and pumps water or detergent aqueous solution, and the water discharge nozzle 1
Water is sprayed from step 2.

Here, the mixer 6 is usually of a type that attracts detergent by the water pressure from the water source 2, so unless the water pressure from the water source 2 exceeds a certain level, it will not be able to attract a sufficient amount of detergent. As a result, the concentration of the detergent aqueous solution reaching the detergent water tank 8 becomes diluted. In other words, if the water pressure of the water source 2 itself decreases, or if the water pressure from the water source overlaps with the water supply to the water tank 4 and is dispersed, resulting in a low pressure in the water supply to the mixer, detergent water with a sufficient concentration may not be obtained. There was an inconvenience that would disappear.

This idea was created in response to these problems,
The purpose of the present invention is to provide a device that can always maintain the concentration of detergent water in a detergent water tank above a certain level and maintain sufficient cleaning ability.

A specific example thereof will be explained below based on the embodiment shown in FIG. This embodiment has the same basic structure as the conventional example shown in FIG. 1, and the same parts are given the same numbers.

20 is a float switch, which operates according to the liquid level in the detergent water tank 8. A liquid level detection circuit 21 detects whether the liquid level in the detergent water tank 8 is at a predetermined level based on a signal from the float switch 20, and outputs a signal if it is below the predetermined level.
22 is a pressure switch provided in the water supply pipe leading from the water source 2 to the mixer 6, and is operated according to the water supply pressure from the water source 2. 23 is a water supply pressure detection circuit which detects whether the water supply pressure is above a predetermined value based on a signal from the pressure switch 22, and outputs a signal if the water supply pressure is above a predetermined value. 24 is a solenoid valve that opens and closes the water supply pipe to the mixer 6; Reference numeral 25 denotes a drive circuit for the solenoid valve, which receives signals from the liquid level detection circuit 21 and water supply pressure detection circuit 23 via an AND circuit 26, and controls the solenoid valve 24 to open by inputting this AND signal. .

Therefore, the detergent water is supplied from the mixer 6 to the detergent water tank 8 only when the liquid level in the detergent water tank 8 is lower than a predetermined value and the water supply pressure from the water source is equal to or higher than a predetermined value. In addition, 13 is a control valve that adjusts the flow rate of detergent from the detergent tank 5 to the mixer 6.
It is used to adjust the concentration of detergent water.

This device is constructed as described above, and supplies detergent water in response to signals from both the liquid level detection means and the water supply pressure detection means, so even if the liquid level in the detergent water tank drops, the detergent water can still be accessed from the water source. The water supply to the mixer is stopped until the water supply pressure of Detergents can be mixed using water pressure, ensuring a detergent concentration above a certain level. Therefore, detergent water of sufficient concentration can always be used, and stable cleaning power can be obtained as a cleaning device.

[Brief explanation of the drawing]

FIG. 1 is a configuration explanatory diagram showing a conventional example of a cleaning device;
FIG. 2 is an explanatory diagram showing the configuration and main control system of an embodiment of the present invention. 1 is a cleaning device, 5 is a detergent tank, 6 is a mixer,
8 is a detergent water tank, 21 is a circuit as a liquid level detection means, 23 is a circuit as a water supply pressure detection means, and 24 is an electromagnetic valve as a valve means.

Claims (1)

[Scope of utility model registration request] a detergent tank; a mixer connected to the detergent tank and a water source to create a detergent aqueous solution by drawing detergent from the detergent tank using water pressure from the water source; and a detergent water tank for storing the detergent aqueous solution sent through the mixer. A cleaning device that discharges an aqueous detergent solution as needed, comprising means for detecting the liquid level in the detergent water tank, means for detecting the water supply pressure from the water source, and a means for detecting the water supply pressure from the water source based on signals from both of the detecting means. A cleaning device characterized by comprising: valve means for opening and closing a water supply channel from the drain.