JPH05272815A - Master valve stopping hot water feeder - Google Patents

Abstract

PURPOSE:To prevent any dangerous condition of making fire burn even in the case that normal water is taken out just after taking-out hot water. CONSTITUTION:There are provided an opening or closing valve 6, a heating tank 3, a spout 10, a changing-over valve 14 for guiding water passed through the opening or closing valve to the spout or the heating tank 3, and a water drain pipe 8 having a water drain valve 9 arranged at a lower part of the spout. The opening or closing valve and the water drain valve are cooperatively connected, the water drain valve is released by closing the opening or closing valve and then water accumulated within the spout is discharged through the water drain pipe.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an original stop type hot water supply device in which normal water (purified water) or hot water is taken out from one faucet by selection.

[0002]

In Japanese Patent Laid-Open No. 1-310787, a water supply faucet connected to a cooler side and a hot water faucet connected to a heater side are separately provided, and a water supply faucet or a hot water faucet is provided as necessary. Open to get the desired water.

[0003] This prior art is convenient in that water can be taken out immediately because each faucet is provided, but since two faucets are attached to the sink, a wide mounting space is required. It had the drawback of being necessary and intrusive.

For this reason, it was designed to take out the required water by selecting the normal water or the hot water by means of a faucet with a single faucet, and the normal water was taken out immediately after taking out the hot water. In this case, there was a risk that hot water initially stored in the faucet would come out and cause burns.

[0005]

Further, as described above, 1
One that takes out tap water or hot water with two faucets, especially the one that takes out purified water for drinking through a water purifier as tap water, mistakenly removes hot water from hot water immediately after taking out hot water. There was a risk of drinking.

The present invention prevents the risk of burns even if the normal water is taken out immediately after the hot water is taken out.

[0007]

The present invention is directed to a tap water opening / closing valve, a heating tank, a faucet provided above a sink, and water flowing through the opening / closing valve to the heating tank side by an external operation. A switching valve that supplies hot water to the faucet or bypasses the heating tank to guide normal water to the faucet, a drainage pipe provided at the bottom of the faucet, and an opening / closing valve provided on the drainage pipe. A drainage valve that is closed by opening and opened by closing the on-off valve, and water that is stored in the faucet after the on-off valve is closed is drained through a drainage pipe.

The hot water outlet pipe of the heating tank and a tap water pipe that communicates with the faucet are connected by cheese, and a water receiver is provided between the cheese and the faucet. A drain pipe having a drain valve is connected and the volume is set to be equal to or larger than the volume of the water passage from the cheese to the water receiver.

[0009]

[Operation] When extracting normal water, open the on-off valve and close the drain valve to take out from the faucet. When removing hot water, open the on-off valve and close the drain valve and operate the switching valve to operate the normal water in the heating tank. Take it out from the tap.

Regardless of whether normal water or hot water is taken out, the drain valve is opened by closing the open / close valve, and the stored water in the faucet is drained through the drain pipe, and immediately after the hot water is taken out. Hot water does not flow out even when water is selected.

Further, a hot water outlet pipe of the heating tank and a tap water pipe for communicating with the faucet are connected by cheese, and a water receiver is provided between the cheese and the faucet. By setting the volume equal to or larger than the volume of the water passage from the water receiver to the water receiver, the hot water stored in the water passage between the cheese and the water receiver will be stored in the water receiver when the normal water is taken out immediately after the hot water is taken out. Water that has been mixed with normal water before flowing out of the faucet and flowing out of the faucet flows out of the faucet.

[0012]

Embodiments of the present invention will be described with reference to the drawings.
(1) is a sink, (2) is a water purifier that removes chlorine and impurities in tap water, and (3) is a heating tank with an internal capacity of about 5 liters that heats the purified water to about 85 degrees, which is not shown. It is heated by the heater. The water purifier (2) and the heating tank (3) are installed under the sink (1).
(4) is a main stopcock installed on the upper part of the sink (1), and an opening / closing valve (6) and a water receiver (7), which are opened and closed by a knob (5), are connected to a drain pipe (8) and Drain valve (9)
And a faucet (10). Although not shown in detail, the on-off valve (6) and the water drain valve (9) are interlocked with each other, and the water drain valve (9) closes when the on-off valve (6) opens and the water drain valve (6) closes when the on-off valve (6) closes. The valve (9) is open.

Reference numeral (11) is an introduction pipe into which tap water flows, which is connected to the on-off valve (6) through a check valve (12). (13) is a guide pipe for continuous water connecting the on-off valve (6) and the inlet side of the water purifier (2), and (14) is an outlet side of the water purifier (2) and an inlet side of the heating tank (3). An electromagnetic switching valve provided between the two is used to guide purified water to the faucet (10) side or the heating tank (3) side by an operation button (not shown) provided on the main water stopcock (4). Is configured.
(15) is a water injection pipe that guides the purified water of the water purifier (2) to the faucet (10) side, (16) is a hot water outlet pipe that guides the hot water of the heating tank (3) to the faucet (10) side, and (17) is the water injection Cheese connecting the pipe (15) and the hot water pipe (16),
Reference numeral (18) is a connecting pipe connecting between the cheese (17) and the water receiver (7).

The water receiver (7) is provided in the lower part of the faucet (10) and its volume is the same as that of the water passage (internal volume of the connecting pipe) between the cheese (17) and the water receiver (7). The above volume is set. The water receiver (7) is preferably attached at a position as close to the cheese (17) as possible. The reason is that the volume of the water passage is reduced, and as a result, the volume of the water receiver (7) can be reduced. Therefore, it is also conceivable to integrate the cheese (17) and the water receiver (7).

One end of the drainage pipe (8) has a faucet (1
It is connected to a water receiver (7) located at the lower part of (0) and the other end is opened to the sink (1) through the drain valve (9).

Next, the operation will be described. First, the case where normal water (clean water at room temperature) is taken out will be described. The knob (5) is operated to open the open / close valve (6), and at the same time, the drain valve (9) is closed and tap water backflow prevention valve (12).
Through the introduction pipe (11) and the on-off valve (6) into the water purifier (2). Chlorine and chlorine are removed from the tap water by the water purifier (2), the water is passed through the water injection pipe (15) and the cheese (17) through the switching valve (14) and the connection pipe (18), and then into the water receiver (7). Inflow. After the water receiver (7) is full, it flows out from the faucet (10). At this time, since the drain valve (9) is closed, it does not flow out from the drain pipe (8).

Then, the case of taking out hot water will be described. First, the switching valve (14) is operated to connect the outlet side of the water purifier (2) and the inlet side of the heating tank (3) to the knob (5).
When the on-off valve (6) is opened by operating the water, the purified water of the water purifier (2) flows into the heating tank (3), and hot water that has been heated in advance with this inflow is supplied from the hot water pipe (16) and the cheese (17). ), The water receiver (7) is filled with water, and then the water is discharged from the faucet (10). After that, when the on-off valve (6) is closed, the drain valve (9) is opened and the hot water in the faucet (10) and the water receiver (7) is immediately drained to the outside through the drain pipe (8).

When another user opens the open / close valve (6) to take out the normal water without noticing it immediately after the hot water is taken out, the normal water (purified water) is the same as the above-mentioned operation. (15), cheese (17), connecting pipe (18),
It flows out of the faucet (10) through the water receiver (7),
Since the water receiver (7) and the faucet (10) are empty in advance, hot water does not flow out. However, hot water is stored in the water passage including the cheese (17) and the connecting pipe (18), and this hot water is stored in the water receiver (7) as the purified water flows and is mixed with the purified water. When the temperature drops significantly and flows out from the faucet (10), it does not cause burns at all.

Although the present invention has been described with reference to purified water that has passed through the water purifier as ordinary water, tap water may be directly taken out as ordinary water.

[0020]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, the drain valve is opened to drain the water stored in the faucet regardless of whether the normal water or the hot water is taken out, and the air is exposed at the next use. There is no risk of burns even if water is not stored in the faucet even if normal water is taken out immediately after the hot water is taken out without drinking diarrhea from the water in which bacteria have propagated.

Further, a water receiver is provided between the cheese and the faucet, in which a hot water outlet pipe of the heating tank and a tap water injection pipe communicating with the faucet are connected, and the water receiver has a volume ranging from cheese to the water receiver. Since the volume of the water passage is set equal to or larger than that of the water passage, the hot water stored in the water passage between the cheese and the water receiver will be The risk of burns is eliminated as the temperature is lowered by mixing.

[Brief description of drawings]

FIG. 1 is a schematic piping diagram of a hot water supply system of the present invention.

[Explanation of symbols]

 3 Heating tank 6 Open / close valve 7 Water receiver 8 Drain pipe 9 Drain valve 10 Faucet 14 Switching valve 15 Water injection pipe 16 Hot water pipe 17 Cheese

Claims (2)

[Claims] 1. A tap water open / close valve, a heating tank, a faucet provided above a sink, and water flowing through the open / close valve is externally supplied to the heating tank to guide hot water to the faucet. Alternatively, a switching valve that bypasses the heating tank and guides normal water to the faucet, a drain pipe provided at the lower part of the faucet, and a shutoff valve provided at the drain pipe to close the open / close valve A drainage valve which is opened by means of a drainage valve, and drains water stored in the faucet through a drainage pipe after closing the on-off valve. 2. A hot water outlet pipe of the heating tank and a tap water pipe communicating with the faucet are connected by cheese, and a water receiver is provided between the cheese and the faucet. The hot water supply device according to claim 1, wherein a drain pipe having a drain valve is connected and the volume is set to be equal to or larger than the volume of the water passage from the cheese to the water receiver. ..