JPH0559176U - Control device for electric water chiller - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the water chiller is not used for a long time, or if the water in the cooling tank is dirty, it will not get dirty. [Structure] Flow rate solenoid valve 3 for discharging water in the cooling tank
Then, when the time is set in advance and the time is up, a timer 4 that outputs a signal to release water to the flow rate solenoid valve, and dirt of water in the cooling tank that is installed in the cooling tank are detected and It is provided with a dirt detection sensor 6 which outputs a signal for discharging water.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a control device for a direct water supply type electric water chiller that automatically discharges water when the water in a cooling tank becomes dirty.

[0002]

[Prior Art]

 The conventional water discharge control device for a direct water-operated electric water chiller discharges water from the discharge port only when the user drinks water and when the user operates the lever or the petal at the foot.

Hereinafter, an example of the above-described water direct connection type electric water chiller will be described with reference to the drawings. FIG. 2 is a water discharge control circuit diagram of a conventional electric water chiller directly connected to a water supply. In the figure, A is a power source, one end of which is connected to a flow rate solenoid valve V for discharging and stopping water from a water discharge port, and one end of the flow rate solenoid valve V is provided with switches SW1 and SW2 for operating the flow rate solenoid valve V. They are installed side by side.

The operation of the control circuit configured as described above will be described below. When the user drinks water, the user operates the lever at the foot or the petal at the foot to turn on one of the switches SW1 and SW2 installed in the lever at the foot or the petal at the foot to turn on the flow solenoid valve. Then, water is discharged from the outlet. Further, the switch SW1, SW2 is turned off when the user stops the operation of the hand lever or the petal at the foot, and the electricity to the flow solenoid valve V stops flowing, so that the water discharge from the water outlet is stopped.

[0005]

[Problems to be solved by the device]

 However, with the above configuration, there is no problem when the user is using it all the time, but when the electric water chiller is not used for a long time, the water in the electric water chiller is not circulated, so the water supply route and the cooling tank The water was contaminated with water and the dirty water was discharged during use, which had a bad effect on hygiene.

The present invention has been made in order to solve the above-mentioned problems, and it is a water-operated direct-connect type electric appliance that prevents water from becoming dirty even when it is not used for a long time or when water in a cooling tank is dirty. The purpose of the invention is to provide a control device for a water chiller.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the controller of the electric water chiller directly connected to the water supply system of the present invention comprises a flow solenoid valve for discharging water in the cooling tank and a flow rate when the time is set in advance and the time is up. It is equipped with a timer that sends a signal to the solenoid valve to release water, and a dirt detection sensor that is installed in the cooling tank to detect dirt in the water in the cooling tank and send a signal to the flow-rate solenoid valve to release water.

[0008]

[Action]

 According to the present invention, with the above configuration, the water in the cooling tank in the direct water-operated electric water cooler is automatically discharged when the water in the cooling tank is dirty due to some reason or when it is not used. It is what is discharged.

[0009]

【Example】

 Hereinafter, water discharge control of an electric water chiller directly connected to a water supply apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a water discharge control circuit diagram according to an embodiment of the present invention. Reference numerals 1 and 2 denote manual flow valve switches that are operated when a user drinks water. By operating the quantity valve switches 1 and 2, the flow solenoid valve 3 discharges and stops water. Reference numeral 4 is a timer unit, which sets a fixed time, and when that time has elapsed, sends a signal to the flow solenoid valve 3 to discharge water. Further, the flow rate solenoid valve 3 has a transistor 5 for controlling ON / OFF operation, a contamination detection sensor 6 for detecting contamination of water in the cooling tank, and a time set in the timer unit 4 by the OR circuit 7. Or the water in the cooling tank becomes dirty, the water in the cooling tank is discharged.

The operation of the above configuration will be described below. When the water in the cooling tank inside the direct water supply type electric water cooler becomes dirty for some reason, the dirt detection sensor 6 that detects the dirt in the water installed in the cooling tank operates and the output signal is input to the OR circuit 7. By being touched, the OR circuit 7 outputs. Therefore, the transistor 5 for operating the flow solenoid valve 3 is turned on, the flow solenoid valve 3 operates, and the water in the cooling tank is discharged. When new water flows in after the water is discharged and the water in the cooling tank is free from dirt, the dirt detection sensor 6 stops operating. Since the output signal from the dirt detection sensor 6 is not input to the OR circuit 7, the output of the OR circuit 7 disappears, the transistor 5 for operating the flow rate solenoid valve 3 is turned off, the flow rate solenoid valve 3 is stopped, and water is discharged. Stops.

If the manual flow valve switches 1 and 2 are not operated for a long time, the timer unit 4 times up, the output of the timer 4 becomes Hi only for a preset time, and this output signal is sent to the OR circuit 7. It is input and the OR circuit 7 outputs it. Therefore, the transistor 5 for operating the flow rate solenoid valve 3 is turned on, the flow rate solenoid valve 3 operates, and water is automatically discharged only for a preset time. After the set time has elapsed, the output of the timer 4 becomes Lo and the input signal is not input to the OR circuit 7, so that the output of the OR circuit 7 disappears and the transistor 5 for operating the flow solenoid valve is turned off and the flow solenoid valve 3 is turned off. Because of the stop, water discharge stops.

[0013]

[Effect of the device]

 The water controller of the electric water chiller directly connected to the tap water according to the present invention automatically discharges water for a predetermined time at every preset time, and the water in the cooling tank is automatically replaced. Also, even if the water in the cooling tank becomes dirty even when the preset timer is counting, the dirt detection sensor detects the water and automatically releases the water until the water in the cooling tank is clean. Therefore, it is possible to prevent water from getting dirty. Further, since the dirty water is not discharged, the user does not drink the dirty water, which is hygienic.

[Brief description of drawings]

FIG. 1 is a control circuit diagram showing an embodiment of the present invention.

FIG. 2 is a conventional control circuit diagram.

[Explanation of symbols]

 1 Manual flow valve switch 2 Manual flow valve switch 3 Flow solenoid valve 4 Timer unit 5 Transistor 6 Contamination detection sensor 7 OR circuit

Claims (1)

[Scope of utility model registration request] 1. A flow rate solenoid valve for releasing water in a cooling tank, a timer which is set in advance and outputs a signal for releasing water to the flow rate solenoid valve when the time is up, and a timer mounted in the cooling tank. A controller for a direct water-operated electric water cooler equipped with a dirt detection sensor that detects dirt in the water in the cooling tank and sends a signal to the flow solenoid valve to release the water.