JPS63168115A - Water feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a water supply device for supplying water to a steam generator such as a domestic steam cooker.

(Prior art) Fig. 5 is a cross-sectional view of a steam cooker equipped with a conventional water supply device, and Fig. 6 is a cross-sectional view of a water tank in the conventional water supply device, in which 1 is a cylindrical opening with a screw 2 3 is a hollow tank with a cylindrical joint 4 on the inner circumference formed with a screw to be screwed into the opening 2, and a valve seat on which a valve body 5 is mounted so as to be movable up and down. A cylindrical water faucet 8 has a spring 7 interposed between the valve body 5 and the valve seat 6, which biases the valve body 5 downward to close the valve. A gasket 9 inserted into the inner bottom of the combination body 4 is an auxiliary tank provided with a protrusion 10, and the tank 1. The water tap 3 and the auxiliary tank 9 constitute a water supply device.

11 is a boiler with a heater 12 installed at the bottom; 13 is a water supply channel that communicates the auxiliary tank 9 and the boiler 11; and 14 is the boiler 1.
A steam supply channel 15 communicates the upper part of the steam cooker with the cooking chamber (not shown) of the steam cooker;
This is a drain valve provided between the drain channel 16 and the drain channel 16 disposed at the bottom of the drain valve 3.

In the conventional example configured in this way, when the tank 1 filled with water and the water tap 3 screwed onto the mouth 2 is placed on the auxiliary tank 9, the valve body 5 is prevented by the protrusion 10 from resisting the stretching force of the spring 7. The water is pushed up and the valve of the water tap 3 is opened, so that water in the tank 1 is supplied to the boiler 11 via the auxiliary tank 9 and the water supply channel 13.

However, when the water level in the auxiliary tank 9 reaches the lower end of the hydrant 3, air no longer flows into the tank 1 from the lower end of the hydrant 3, and from the tank 1 to the auxiliary tank 9 and the boiler 1.
Water is no longer supplied to 1, and the auxiliary tank 9 and boiler 1
The water level of 1 will no longer rise. However, while the heater 12 is energized to generate steam, steam is supplied from the boiler 11 to the cooking chamber via the steam supply path 14 and the water level in the boiler 11 and auxiliary tank 9 decreases. , air flows into the tank 1 from the lower end of the water tap 3,
and an operation of supplying water in the tank 1 to the auxiliary tank 9.

When the water level in the auxiliary tank 9 and boiler 11 rises to the lower end of the hydrant 3, air no longer flows into the tank 1.
Repeating the operation of stopping the water supply, the auxiliary tank 9
And the water level in the boiler 11 is kept almost constant.

(Problem to be Solved by the Invention) By the way, if the distance between the inner circumferential wall of the hydrant 3 and the valve body 5 is narrow, the water level in the auxiliary tank 9 and the boiler 11 will drop, causing water to flow from the lower end of the hydrant 3. When air flows into the tank 1, surface tension acts between the inner peripheral wall surface of the hydrant 3 and the valve body 5, forming a water film, so that the air flowing from the lower end of the hydrant 3 flows into the tank. It will no longer flow into 1. As a result, the water in the tank 1 is no longer supplied from the auxiliary tank 9 to the boiler 11, causing the boiler 11 to run dry, shortening the lifespan of the boiler 11, and spoiling the food as it no longer generates steam. There was a problem.

The present invention was made in view of these problems, and provides a water supply device that prevents the formation of a water film between the inner circumferential wall surface of the hydrant and the valve body without increasing the diameter of the hydrant. is intended to provide.

(Means for Solving the Problems) According to the present invention, the valve body of the hydrant is provided at a position eccentric from the center of the hydrant.

- (Function) At least, if the distance between the inner circumferential wall of the hydrant and the valve body is widened to the extent that the weight of the water in the tank cannot be supported by its surface tension, the hydrant can A water film is no longer formed between the inner circumferential wall surface of the valve body and the valve body, and water can be replenished to the auxiliary tank appropriately.

(Example) An example of the present invention will be described in detail below with reference to one drawing.

FIG. 1 is a cross-sectional view of a steam cooker equipped with an embodiment of the present invention, FIG. 2 is a cross-sectional view of a water tank according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of a steam cooker equipped with an embodiment of the present invention. FIG. 4 is a longitudinal cross-sectional view of a steam cooker equipped with an embodiment of the present invention, and 20 is a hollow tank having a cylindrical opening 21 with a thread at the bottom; 22 is
A cylindrical support body 24 is arranged concentrically at the upper end inside a cylindrical joint body 23 having a screw screwed into the opening 21 on its inner periphery, and a valve body 25 is movable up and down. The valve seat 26 to be mounted is integrally provided at a position eccentric from the center of the inner side, and a spring 27 is attached between the valve seat 26 and the valve body 25 to bias the valve body 25 downward and hold the valve in a closed state. 28 is a gasket inserted into the bottom between the coupling body 23 and the support body 24; 29 is an auxiliary tank provided with a protrusion 30; Hydrant 22 and auxiliary tank 29
This constitutes a water supply system. 31 is a boiler with a heater 32 installed at the bottom; 33 is a water supply channel that communicates the auxiliary tank 29 and the boiler 31; and 34 is the upper part of the boiler 31 and the cooking chamber 3.
5 (see Figs. 3 and 4), and the cooking chamber 35 is provided in an external casing 36 and separated from a control room 38 by an internal casing 37 (see Fig. 3). and fourth
(see figure). 39 is a valve seat provided between the water supply channel 33 and a drainage channel 40 disposed at the bottom of this water supply channel 33; 41 is a valve seat 3;
9 is a valve body mounted so as to be movable in the vertical direction; 42 is a valve body 4;
The bottom of the auxiliary tank 29 and the valve body 4
A spring inserted between 1 and 1.

Reference numeral 43 denotes a drain lever with one end rotatably attached to the side wall of the external casing 36. When the drain lever 43 is rotated,
Valve body 4 with the other end of drain lever 43 protruding from drain channel 40
It comes into contact with the bottom of 1.

In the conventional example configured in this way, when the tank 20 filled with water and with the water tap 22 screwed onto the opening 21 is placed on the auxiliary tank 29, the valve body 25 resists the extension force of the spring 7 due to the protrusion 30. The water is pushed up and the valve of the water tap 22 is opened, so that water in the tank 20 is supplied to the boiler 31 via the auxiliary tank 29 and the water supply channel 33.

However, when the water level in the auxiliary tank 29 reaches the lower end of the hydrant 22, air no longer flows into the tank 20 from the lower end of the hydrant 22, and the water level in the auxiliary tank 29 stops flowing from the lower end of the hydrant 22 into the tank 20.
And water is no longer supplied to the boiler 31, and the auxiliary tank 2
9 and boiler 31 will no longer rise. However, while the heater 32 is energized to generate steam, the steam is supplied from the boiler 31 to the cooking chamber 35 via the steam supply path 34, and the steam is supplied to the cooking chamber 35 from the boiler 31 and the auxiliary tank 29.
When the water level in the tank 2 drops, the lower end of the hydrant 22
Air flows into 0.

The operation of supplying water in the tank 20 to the auxiliary tank 29 and the water level in the auxiliary tank 29 and boiler 31
2, air no longer flows into the tank 20 and the water supply is stopped repeatedly, thereby keeping the water level in the auxiliary tank 29 and the boiler 31 almost constant.

After the cooking is completed, the auxiliary tank 29. When you want to drain water from the boiler 31 and water supply channel 33, turn the drain lever 43 and move the valve body 41 upward against the tension of the spring 42. The valve opens and the water drains out. Water is drained to the outside from the drainage channel 40.

By the way, since the valve element 25 of the hydrant 22 is provided at a position eccentric from the center of the hydrant 22, when air flows in from the lower end of the hydrant 22, the inner circumferential wall surface of the hydrant 22 and the valve element 25 The surface tension of the water in the tank 20 is no longer able to support the weight of the water in the tank 20, and a water film is no longer formed between the inner circumferential wall surface of the faucet 22 and the valve body 25. , water is replenished to the auxiliary tank 29 as appropriate.

Incidentally, the support body may be provided concentrically outside the combined body having the screw formed on the outer periphery.

Further, the means for connecting the opening 21 and the connecting body 23 may be other than screws.

Further, instead of the cylindrical support 24, protruding supports may be arranged in parallel to face the inner or outer periphery of the combined body 23.

(Effects of the Invention) As explained above, according to the present invention, by providing the valve body of the faucet at a position eccentric from the center of the faucet, water can be drawn between the inner circumferential wall surface of the faucet and the valve body. Since no membrane is formed, the diameter of the faucet does not increase, and the dimensions of the water supply device become smaller.

This has the effect of reducing the manufacturing cost of the water supply device, and also has the effect of lengthening the life of the boiler because water is replenished from the tank to the auxiliary tank as appropriate and the boiler is prevented from running dry.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a steam cooker equipped with an embodiment of the present invention, FIG. 2 is a cross-sectional view of a water tank according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of a steam cooker equipped with an embodiment of the present invention. FIG. 4 is a vertical cross-sectional view of a steam cooker equipped with an embodiment of the present invention, FIG. 5 is a cross-sectional view of a steam cooker equipped with a conventional water supply device, and FIG. The figure is a sectional view of a water supply tank in a conventional water supply device. 20... Tank, 21... Port, 22... Water tap,
23... Combined body, 25... Valve body, 29... Auxiliary tank.

Claims (1)

[Claims] When the upper end of the water faucet is connected to the mouth at the bottom of the tank and the tank is placed on the auxiliary tank, if the water level in the auxiliary tank falls below the lower end of the faucet, air will flow into the tank. The operation of supplying water from the tank to the auxiliary tank by flowing into the tank, and the operation of stopping the supply of water when the water level rises to the lower end of the water faucet because air no longer flows into the tank are repeated. In the water supply device that maintains the water level of the auxiliary tank at a substantially constant level, the valve body of the hydrant is provided at a position eccentric from the center of the hydrant.