JPH03257232A - Urinal bowl automatically washed by temperature difference - Google Patents

Abstract

PURPOSE:To remove an uncomfortable feeling during use by mounting temperature sensors respectively to a V-shaped bottom part surface of an urinal bowl and its reverse side and allowing a fixed amount of water to flow out when a temperature of the surface sensor is judged higher than the temperature of the reverse side sensor. CONSTITUTION:The second temperature sensor 2 is provided in the reverse side of an urinal bowl while embedding the first temperature sensor 1 in a V-shaped bottom part surface 3 of the urinal bowl so as to come into contact with the surface 3, and the sensors are connected respectively to circuits 4. A temperature difference between the sensors 1, 2 are detected, and a fixed amount of water is allowed to flow out by actuating an electrically operated valve 5 for a fixed period by a timer when a temperature of the sensor 1 is judged higher than the temperature of the sensor 2. Accordingly, an uncomfortable feeling during use can be removed.

Description

[Detailed Description of the Invention] A) Industrial Application Field Regarding Automatic Cleaning of Urinals) Conventional Technology Conventional self-cleaning urinals use an infrared sensing device to detect the presence of a person standing in front of the urinal, and flush the urinal as soon as the person leaves. The way it starts,
The infrared II sensing device must be embedded in the wall or exposed, which is difficult to install, and if the device is exposed, there is a risk of malfunction due to tampering.

Also, since the user must wash the device after leaving the device, discomfort occurs during use.

c) Problems to be solved by the invention: Easy to install, eliminates malfunctions and malfunctions caused by mischief,
Eliminates discomfort during use.

2) Means to solve the problem To make the trouble of installing the urinal simple and tamper-proof by housing the temperature sensor, circuit, and electric valve in the main body (6), and to eliminate discomfort during use. Cleaning starts immediately.

E) Effect When you start using it, the temperature sensor (1) detects the temperature,
Measure the temperature difference between the temperature sensor (2) and the temperature sensor (
If it is determined that the humidity in 1) is higher than that in temperature sensor (2), a timer is used to operate the electric valve for a certain period of time to clean it.

f) Effects of the Invention Since the sensor is not exposed, there is no malfunction caused by tampering or dirt, and it is certain that it will not operate even if a person is standing in front of it, which is the case with photoelectric types.

Also, since it is cleaned during use, there is less discomfort.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of the self-cleaning urinal, FIG. 2 is a cross-sectional view of the embodiment, and FIG. 3 is a circuit diagram showing the operation.

Claims (1)

[Claims] A temperature sensor (
1) is embedded so as to be in contact with the surface (3), and another temperature sensor (2) is installed on the back side of the urinal and connected to the circuit (4). As shown in Figure 3, the circuit includes a temperature sensor (
Detects the temperature difference between 1) and (2), determines that temperature sensor (1) is higher than temperature sensor (2), amplifies this, and sets a timer so that a certain amount of water flows. A self-cleaning urinal that connects and operates an electric valve.