JPH10306482A - Automatic faucet for cold region - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent freezing of an automatic faucet by a method wherein water faucets are arranged on the outlet side and the inlet side of a valve unit incorporating a solenoid valve to open and close water discharge, a heater is incorporated, and when temperature is decreased to a value lower than a given value, heating and intermittent water discharge are performed. SOLUTION: A temperature sensor is incorporated in a water discharge faucet 2 and drain cocks 7 and 13 are arranged at a water suction tube 6 and a stop valve 12. A valve unit 8 is arranged at the lower portion of a counter 1, incorporates a solenoid valve and a peripheral aqueduct pipe are incorporated, and a control part 9 is arranged. A sheet-form heater is arranged above the solenoid valve. A temperature sensor is connected to a control part, and when an outside air temperature is reduced to a value lower than a given temperature, the solenoid valve is opened and closed and driven, and intermittent draining through a spout 3. Simultaneously, a power is fed from the control part 9, and the interior of the valve unit 8 is heated to prevent the occurrence of freezing. When a device is arranged at a intense cold region, the drain cocks 7 and 13 are opened, and water in each water passage is drained. This constitution prevents the occurrence of freezing when the device is arranged at the cold region and the intense cold region.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to an automatic faucet for cold regions.

[0002]

2. Description of the Related Art Conventionally, as an automatic faucet for cold districts, there is an automatic faucet having a structure of preventing freezing by a heater or a structure of automatically discharging water to prevent freezing. There is a problem that a sufficient freezing prevention effect cannot be achieved in a severely cold region even with a simple structure.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide an automatic faucet for a cold district which can prevent freezing even when installed in a severely cold district. The first gist of the invention is to provide an automatic faucet in which a valve unit provided with an electromagnetic valve for opening and closing water discharge is provided below a counter, and the drain unit is configured to drain water at an outlet side and an inlet side of the valve unit. And a heater is provided in the valve unit. A second gist is that a temperature sensor is provided, and when the temperature detected by the temperature sensor drops below a predetermined temperature, the electromagnetic valve is intermittently driven to intermittently discharge water.

[0004]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an automatic faucet for cold regions,
FIG. 2 is a side view of the valve unit, and FIG. 3 is an internal view of the valve unit.

In FIG. 1, a spout 3 is formed at the upper end of a spout 2 erected on a counter 1, and a detection sensor 4 for detecting a hand is provided below the spout 3. In this example, as shown in FIG.
A temperature sensor 5 is provided inside the water faucet 2 in the vicinity, and the temperature sensor 5 is configured to measure and detect the outside air temperature near the water outlet 3. A water supply tube 6 extends downward from the water faucet 2 through the counter 1, and a water drainage plug 7 capable of draining water is provided at the lower end of the water supply tube 6. Further, a valve unit 8 is provided at a lower portion of the counter 1 in communication with a lower end side of the water supply tube 6, and a solenoid valve for opening and closing water discharge is provided in the valve unit 8, as shown in FIG. 10 and its surrounding water pipes are provided internally, and a control unit 9 is provided.

A heater 11 in the form of a sheet is disposed above the solenoid valve 10 in the valve unit 8. Further, a water stopcock 12 is connected in a hanging manner in communication with the valve unit 8, and the water stopcock 12 is provided with a water drainage stopper 13. Through the water supply tube 6 to be supplied to the water outlet 3 of the water faucet 2 when the electromagnetic valve 10 is opened. When the hand is held below, the hand detection sensor 4 detects the hand and the electromagnetic valve 10 is opened via the control unit 9 so that water is automatically discharged from the water discharge port 3. When the hand is removed from the spout 3, the electromagnetic valve 10 is closed and the spout is automatically stopped.

In this embodiment, the temperature sensor 5 is electrically connected to the control unit 9 so that it can detect the outside air temperature and output a signal to the control unit 9 when the outside air temperature falls below a predetermined temperature. At such a low temperature, the electromagnetic valve 10 is intermittently opened and closed via the control unit 9, so that water is intermittently discharged from the water discharge port 3. It is configured such that freezing of the water channel leading to the water discharge port 3 is properly prevented. When the electromagnetic valve 10 is intermittently driven in this way, power is simultaneously supplied from the control unit 9 to the seat heater 11 to heat the seat heater 11, and the inside of the valve unit 8 is heated to cause the electromagnetic The water passage in the valve 10 and the valve unit 8 is preferably prevented from freezing.

Therefore, when installed in a cold region, when the outside air temperature falls below a predetermined temperature, the solenoid valve 10 is automatically driven intermittently, so that freezing can be effectively prevented by intermittent water discharge. In a cold region where the temperature is low, there is a possibility of freezing due to intermittent water discharge. It is configured so that freezing can be prevented more reliably. By opening the water drain plug 7, water in the water channel from the water discharge port 3 to the lower end of the water supply tube 6 can be completely drained. It is possible to reliably prevent the freezing of the part,
By opening the drain plug 13, the valve unit 8 is opened.
From the canal to the water stopcock 12
Freezing of this portion can be reliably prevented.
However, also in this case, the solenoid valve 1 in the valve unit 8
0 and the water in the water channel cannot be completely drained, so that the inside of the valve unit 8 is heated by the seat heater 11 so that freezing of the solenoid valve 10 or the water channel in the valve unit 8 can be reliably prevented. ing.

Therefore, in the automatic faucet having such a configuration, when the automatic faucet is installed in a cold region, the solenoid valve 10 is automatically driven intermittently in a low temperature state, so that freezing can be prevented by intermittent water discharge, and the severely cold region can be prevented. If it is installed in the water can be further drained by opening the drain plugs 7 and 13,
It is possible to more reliably prevent freezing, it can be installed in cold regions, it is also possible to install in severe cold regions, it is possible to respond well to any place and prevent freezing You can do it.

[0010]

According to the present invention, there is provided an automatic faucet in which a valve unit provided with an electromagnetic valve for opening and closing water discharge is disposed below a counter. In addition to being equipped with a water tap, the valve unit is equipped with a heater so that it can be installed not only in cold regions but also in extremely cold regions. Water can be drained favorably to prevent freezing, and the valve unit can be heated by a heater to prevent freezing.

Further, a temperature sensor is provided, and when the temperature detected by the temperature sensor falls below a predetermined temperature, the solenoid valve is intermittently driven to intermittently discharge water, thereby draining water in a cold region. Drive the solenoid valve intermittently
This has the effect of preventing freezing automatically by intermittent water discharge.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an automatic faucet for cold regions.

FIG. 2 is a side view of FIG.

FIG. 3 is an internal configuration diagram of a valve unit.

[Explanation of symbols]

 Reference Signs List 1 counter 2 faucet 3 faucet 4 hand detection sensor 5 temperature sensor 6 water supply tube 7, 13 water drainage 8 valve unit 9 control unit 10 solenoid valve 11 seat heater 12 water stopcock

Claims (2)

[Claims] 1. An automatic faucet comprising a valve unit provided with an electromagnetic valve for opening and closing water discharge provided below a counter, wherein drain valves for draining water are respectively provided at an outlet side and an inlet side of the valve unit. An automatic faucet for cold regions, wherein the automatic faucet is provided with a heater in the valve unit. 2. The apparatus according to claim 1, further comprising a temperature sensor, wherein when the temperature detected by the temperature sensor falls below a predetermined temperature, the solenoid valve is intermittently driven to intermittently discharge water. Automatic faucet for cold regions.