JP2827308B2 - Handwasher with water heater - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a hand-washing machine provided with a water heater for warming cold water.

(Prior Art) A hand-washing device with a water heater for washing hands and face with hot water is becoming widespread, and a water heater attached to this hand-washing device mainly uses electricity or gas as a heat source to heat cold water to a desired temperature.

Water heaters include a main stop type water heater having an on / off valve on the inlet side, and a front stop type water heater having an on / off valve on the outlet side.

(Problems to be Solved by the Invention) In a water heater with a stop, the water expands in the water heater to warm the cold water sealed in the water heater. In order to release the expansion water, it is necessary to provide a safety valve and a pressure reducing valve. It is necessary to sufficiently maintain these safety valves and pressure reducing valves, and further close inspection is required.

On the other hand, since the outlet side of the water heater is always open, the main stop type water heater does not require a safety valve or a pressure reducing valve. However, there is an inconvenience that the droplets continue to fall from the outlet of the faucet due to the expansion in the water heater, making it unsightly.

(Means for Solving the Problems) The present invention relates to an improvement of a main stop type water heater attached to a hand-washing device with a water heater. It is to provide a flow path switching means which can be selected.

Further, the first outlet is connected to a discharge port of a basin, and the second outlet is connected to a drainage channel provided around a ball surface of a hand basin.

(Operation) When a hand is inserted under the water outlet, the hot water of the water heater is discharged from the water outlet through the first outlet.

Next, when the hand is pulled out, the flow path switching means operates, the first outlet is closed, the water discharge from the water outlet is stopped, the second outlet is opened, and the water heater can bypass the ball surface of the hand washer. Connect to drainage passage. Therefore, steam and steam of the water heater are discharged through the drain passage. Also, when the on / off valve is opened, the flow path switching means is switched to the water discharge port side, and when the on / off valve is closed, the flow path is switched to the drainage side. It will be easier.

(Example) An example of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of a handwasher with a water heater according to the present invention.

The water heater 1 attached to the hand basin 10 includes a tank portion 3 for storing hot and cold water in a case 2, a heater portion 4 for warming water, a temperature sensing portion 5 for monitoring hot water temperature, and a heater for receiving a signal from the temperature sensing portion. A temperature controller 6 for controlling the unit 4; an on / off valve 7 provided at the inlet of the tank unit 3; and a first outlet 8A and a second outlet 8B selected as the outlet of the tank unit. A flow path switching means 8 such as a three-way electromagnetic valve is provided.

The water heater 1 is placed on the lower floor of the hand washer 10 and a water pipe 9 is connected to an inlet thereof.

FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1. The rim portion 10b surrounding the ball surface 10a of the ceramic hand-washing device is hollow, and the first portion extending from the first outlet 8A to the hollow portion 10c. The tube of 11
The first tube is the spout at the top of the hand washer 10.
Connect to 12.

On the other hand, a drain passage 13 is formed integrally with the rim portion 10b, bypassing the ball surface 10a, and a lower portion thereof is connected to the drain port 10d. The drain passage 13 extends from the second outlet 8B to the upper inlet 13a of the drain passage 13. Two tubes 14 are connected.

The operation of the water heater and the hand-washing device having the above configurations will be described below.

Insert your hand below the spout 12 of the hand washer 10,
When the photoelectric sensor 15 is turned on, the controller 6 receiving the signal from the photoelectric sensor 15 opens the on / off valve 7,
The first outlet 8A of the flow path switching means 8 is opened.

The hot water in the tank unit 3 is pushed out by the water supply of the water pipe 9, and the hot water is discharged from the water outlet 12 through the first outlet 8A and the first tube 11.

When the photoelectric sensor 15 is turned off by pulling the hand or the like, the controller 6 receiving the signal from the photoelectric sensor 15 turns on the on / off valve 7.
And the second outlet 8B is opened by closing the first outlet 8A of the flow path switching means 8.

The water heater 1 uses the heater unit 4 to warm the low-temperature internal hot water to a predetermined temperature. At this time, the hot and cold water in the tank portion 3 expands greatly, but the pressure rise does not occur because the second outlet 8B communicates with the drain passage 13 and is open to the atmosphere. And
Steam and steam that are actively generated as the temperature rises are the first
Without going to the tube 11, the water is drained from the drain passage 13 to the drain port 10 d via the second tube 14.

The drain passage 13 is provided with an inlet 13a at a height higher than the overflow surface 10e (see FIG. 2) so that the hand washing water can be supplied to the second tube 14a.
To prevent backflow to

FIG. 3 is a view showing another embodiment of the flow path switching means, wherein the flow path switching means 8 is constituted by two two-way solenoid valves 16 and 17. These valves 16 and 17 are controlled by a controller so that one is always on and the other is always off.

The water heater 1 may be gas-fired or oil-fired in addition to electric heating.

(Effects of the Invention) As described above, the present invention skillfully solves the drawbacks of the main stop type water heater and facilitates the treatment of inflation water.

By connecting a water heater to a hand washing machine having a built-in drain furnace, it is possible to prevent drops from dropping out of the spout, thereby greatly improving the function of the hand washing machine. Also, when the on / off valve is opened, the flow path switching means is switched to the water discharge port side, and when the on / off valve is closed, the flow path is switched to the drainage side. be able to.

[Brief description of the drawings]

 FIG. 1 is a perspective view of a hand-washing machine with a water heater according to the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. DESCRIPTION OF SYMBOLS 1 ... Water heater, 3 ... Tank part 4 ... Heater part, 5 ... Temperature sensing part 6 ... Controller, 7 ... On / off valve 8 ... Flow path switching means 8A ... 1st outlet, 8B ... … Second exit 10… Handwasher with water heater 10a… Ball surface 13… Drainage passage 15… Photoelectric sensor

Claims (2)

(57) [Claims] 1. A hand-washing device with a water heater that discharges hot water by a sensor when a hand is inserted under a water outlet, and an on-off valve is provided at an inlet of the water heater of the hand-washing device. A flow path switching means is provided at the outlet of the vessel, and the first of the flow path switching means is provided.
Is connected to the discharge port, the second outlet of the flow path switching means is connected to the drain passage of the hand washer, and the flow path switching means receives an ON signal from the sensor, opens the on / off valve, and switches the flow path. A hand-washing device with a water heater, wherein a controller for opening a first outlet of the means, closing an on / off valve in response to an OFF signal of a sensor, and opening a second outlet of the flow path switching means is connected. 2. A hand-washing device with a water heater that discharges hot water by a sensor when a hand is inserted under a water outlet, and an on-off valve is provided at an inlet of the water heater of the hand-washing device. A flow path switching means is provided at the outlet of the vessel, and the first of the flow path switching means is provided.
Is connected to the discharge port, the second outlet of the flow path switching means is connected to a drain passage provided around the ball surface of the hand washer, and the flow path switching means receives an ON signal of a sensor. A controller is connected to open the on / off valve, open the first outlet of the flow path switching means, close the on / off valve in response to the off signal of the sensor, and open the second outlet of the flow path switching means. Handwasher with water heater.