JPS6128884B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water supply device for supplying water into a pressurized tank such as a boiler. The purpose of the present invention is to provide a water supply device for a pressurized tank that can easily supply water with simple operations.

As shown in FIG. 1, in a conventional boiler, a heater 101 heats a container 104 having a steam outlet 102 and a water inlet 103 to generate steam. In such a boiler, the pressure inside the container 104 is higher than atmospheric pressure due to steam, so the pressure inside the container 104 is higher than atmospheric pressure.
If water is not supplied at a pressure higher than the pressure inside container 104, water will flow backwards due to the pressure inside container 104, making it impossible to supply water. Therefore, when supplying water, the pressure inside the container 104 must be lowered to atmospheric pressure.
Either the heater 101 must be turned off, the heating of the boiler must be stopped, and the pressure must be allowed to drop, or a pressurizing device must be installed to supply water at a pressure higher than the pressure inside the container 104, which may take a long time or require additional processing time. There was a drawback that a device had to be installed.

The present invention solves the above-mentioned conventional drawbacks, and embodiments thereof will be described below with reference to FIGS. 2 to 6.

In the figure, 1 is a pressurized tank having a water supply port 2 on the top surface and a steam outlet 3 on the upper side surface;
5 is a heater provided at the bottom of the pressurized tank 1;
A valve 5 opens and closes the water supply port 2, and the valve 5 is installed on a support rod 6 provided in the pressure tank 1 via a spring 7 so as to close the water supply port 2 from within the pressure tank 1. 8 is a female thread provided on the inner wall of the water supply port 2, 9 is a water supply cup, and a connecting body 10 is provided on the outer periphery of the bottom portion to be screwed into the female thread 8 of the water supply port 2. Reference numeral 11 denotes a ventilation pipe having a cylindrical shape and having a plurality of vertical water supply channels 12 on its outer periphery, the upper end of which projects above the water surface of the water supply cup 9, and the lower end of which projects beyond the connection body 10. It is located inside. 13 is a cavity provided in the connecting body 10 so that the outer periphery of the ventilation pipe 11 is exposed at the lower part of the connecting body 10, and 14 is a cavity provided in the ventilation pipe 11 so that the cavity 13 and the inside of the ventilation pipe 11 are communicated with each other. This is a communication port provided.

In the above configuration, when water is not being supplied by the water supply cup 9, the valve 5 closes the water supply port 2 from inside the pressurized tank 1 by the spring force of the spring 7, and is heated by the heater 4, as shown in FIG. Even if the pressure inside the pressurized tank 1 increases, the pressure is applied in a direction that causes the valve 5 to close the water supply port 2.
The steam is pressurized without leaking from the water supply port 2 and is sent from the steam outlet 3.

When water is to be supplied next time, the connector 10 of the water supply cup 9 containing a predetermined amount of water is screwed into the water supply port 2 of the pressurized tank 1, as shown in FIG. When the connecting body 10 is screwed together, the lower end of the vent pipe 11 protruding downward from the connecting body 10 pushes down the valve 5 against the spring pressure of the spring 7, opening the water supply port 2, and opening the pressurized tank 1. The high-pressure air inside enters the ventilation pipe 11 from the cavity 13 of the connecting body 10 through the communication port 14, and is sent into the water supply cup 3, so that the pressure inside the water supply cup 3 becomes the same as that inside the pressurized tank 1. . In this state, the water in the water supply cup 3 passes through the water supply channel 12 provided on the outer periphery of the vent pipe 11 and is supplied into the pressurized tank 1 due to the water level difference, that is, the action of gravity.

The amount of water to be supplied can be adjusted by changing the shape and cross-sectional area of the water supply channel 12, so that only the required amount of water can be supplied.

As described above, according to the present invention, by providing a valve at the water supply port of the pressurized tank and attaching the water supply cup to the water supply port, the pressure inside the pressurized tank and the water supply cup are automatically made the same pressure, and the water supply cup The water inside the pressurized tank can be fed into the pressurized tank by gravity, so water can be easily fed while the pressurized tank continues to be heated, and a separate pressurizing device is not required to feed water into the pressurized tank. It brings about such effects.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional boiler, Fig. 2 is a sectional view of the water supply cup of the present invention, Fig. 3 is a sectional view of the same pressurized tank, and Fig. 4 is a state in which the water supply cup is connected to the pressurized tank. FIG. 5 is a cross-sectional view of the ventilation pipe. 1... Pressurized tank, 2... Water supply port, 5... Valve,
7...Spring, 9...Water supply cup, 10...
Connection body, 11... Ventilation pipe, 12... Water supply channel.

Claims (1)

[Claims] 1. A pressurized tank equipped with a valve that closes the water supply port using spring pressure, a water supply cup equipped with a connection body that is connected to the water supply port in a watertight manner, and a pressurized water supply between the inside of the water supply cup and the connection body. A water supply channel that communicates with the inside of the tank, and a ventilation pipe provided with a communication port through which air in the pressurized tank flows into the water supply cup, and when the water supply cup is connected to the pressure tank, the ventilation pipe is connected to the A water supply device to a pressurized tank that is installed so that the water supply port is opened by pressing the valve.