JPH0942768A - Multipoint hot water storage and supply apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the sure air vent and stable pouring of hot water by intermittently and forcibly discharging the air generated in a hot water storage tank when water is boiled by an opening/closing means. SOLUTION: An opening/closing means 8 is opened according to the ON/OFF action of a heat source 5 or the air volume at each prescribed interval. The interval or frequency of the opening/closing time can be appropriately changed. A solenoid valve 8 is intermittently and forcibly opened by commanding such conditions from a controller 9 of the solenoid valve. When the solenoid valve 8 is opened, air together with hot water is discharged from an open end to a water discharge port 7 through a pipe 6. Scales such as calcium ion adhered to the pipe wall are frequently discharged together with air and hot water, and no scales are fixed to the pipe wall, and hot water of excellent quality is provided. Because hot water which is intermittently discharged from the pipe 6 is used as the sealing water of the water discharge port 7, no bad smell is generated even when water is not used for a long time, and when a faucet 11 is opened, hot water can be smoothly supplied without including air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water storage type water heater,
In particular, the present invention relates to an air-bleeding technology of a stop-type hot water supply water heater that stops hot water supply at the hot water supply port side of the hot water storage tank.

[0002]

2. Description of the Related Art Conventional hot water storage type water heaters are of a high temperature type, for example, 93 ° C., when boiling water with a heat source such as electricity or gas.
In the case of boiling, air is generated, and air is accumulated in the upper part of the hot water storage tank. If the hot water is supplied as it is, the air and the hot water are mixed and discharged, so that stable pouring cannot be performed. Therefore, a float-type automatic air-bleeding valve is installed at the top of the hot water storage tank together with the float chamber, and the air that has been separated and separated is collected in the float chamber, and the air lowers the water surface.
When the float drops and the valve opens, the flow automatically
The air that had accumulated in the room was removed from the hot water storage tank. When the air disappeared, the water level in the float chamber rose, the float rose, and the valve was closed.

[0003]

SUMMARY OF THE INVENTION However, the flow
The hot water in the float chamber, which is provided to increase the accuracy of the hot water operation, is likely to stay because it is difficult for convection with other hot water in the hot water storage tank. Therefore, in the hot water of the float chamber, chlorine ions, calcium ions, silicon ions, etc., which are contained in a state of being boiled down, are deposited, and the scale is applied to the valve and the float.
Adhered as a cable and impaired the smooth operation of the float. Therefore, there is a problem in that the air cannot be deflated sufficiently.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a pre-stop type hot water storage water heater capable of reliable air bleeding and stable pouring.

[0005]

In order to achieve this object, the invention of a stopper type hot water storage water heater according to claim 1 is a stopper type hot water storage water heater which stops hot water supply at the hot water supply port side of a hot water storage tank. It is characterized in that the air generated in the hot water storage tank at the time of boiling water is intermittently and forcibly discharged by the opening / closing means.

The invention of a stopper type hot water storage water heater according to a second aspect is the one according to the first aspect, wherein the opening / closing means comprises a valve or a cock, and a conduit is provided for guiding the air from the hot water storage tank to a drain port. It is characterized by being provided in.

Further, the invention of the pre-stop type hot water storage water heater according to claim 3 is characterized in that, in claim 1, the opening / closing means is opened every fixed time for a fixed time.

The invention of a pre-stop type hot water storage water heater according to claim 4 is characterized in that, in claim 1, the opening / closing means is opened according to at least one of ON / OFF operation of a heat source for boiling water. .

Further, the invention of a prestop type hot water storage water heater according to a fifth aspect is characterized in that, in the first aspect, the opening / closing means changes the interval or the number of opening / closing times according to the amount of the air. There is.

Further, the invention of a front-stop type hot water storage water heater according to a sixth aspect is characterized in that, in the first aspect, the opening / closing means is an electromagnetic valve.

Further, the invention of a pre-stop type hot-water storage water heater according to claim 7 is a front-stop type hot-water storage water heater which stops hot water supply at the hot water supply port side of the hot-water storage tank, wherein air generated in the hot-water storage tank at the time of boiling water is generated. The opening and closing means discharges the hot water intermittently and forcibly, and the hot water discharged together with the air is discharged to a drain port having a water sealing means.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 shows a preferred embodiment of the present invention. However, it goes without saying that the present invention is not limited to this embodiment.

In the figure, reference numeral 1 denotes a hot water storage tank, which is made of steel and has a shape in which a cylindrical body is formed with outwardly bulging end plates. Of course, it may be made of metal or resin such as FRP as long as it can withstand the desired pressure and temperature. A hot water storage tank 1 is installed vertically, and a water supply pipe 2 connected to a water pipe is connected to the lower end. In the middle of the water supply pipe 2, there is also a pressure reducing valve 3 for reducing the supply water pressure to a constant value, a check valve 4 for preventing backflow from the hot water storage tank, and a kind of safety valve for draining water when the water in the hot water storage tank 1 expands. A relief valve 12 is provided.

A heat source for electricity, gas, steam, etc., for example, an electric heater 5 is provided in the lower portion of the hot water storage tank 1 to heat the supplied water.

At the uppermost end of the hot water storage tank 1, a conduit 6 for discharging the air that is separated and generated by heating is connected. The open end of the conduit 6 faces the drainage port 7.

Similarly, the expanded water drained from the relief valve 12 is drained to the drain port 7 through the water distribution pipe 13 whose open end faces the drain port 7. Furthermore, in the middle of the conduit 6,
An opening / closing means 8 composed of a valve or a cock is provided so that air generated in the hot water storage tank 1 at the time of boiling water is intermittently and forcibly discharged by the opening / closing means 8.

The opening / closing means 8 is set to open for a fixed time every fixed time. Specifically, the opening / closing means 8 is a solenoid valve, and a solenoid valve controller 9 is connected to operate. This control can be made fine by changing the interval or the number of times of opening and closing. For example, means for detecting the amount of air generated can be provided in the hot water storage tank 1 and can be controlled according to this amount.

Further, the opening / closing means 8 can be controlled not only to open every fixed time for a fixed time but also to open according to at least one of ON / OFF operation of the heat source for boiling water. In this embodiment, control is performed by energization or power failure for temperature control of the electric heater 5.

One end of a hot water supply pipe 10 is connected to the upper part of the hot water storage tank 1, and the other end of the hot water supply pipe 10 is a faucet 11 serving as a hot water supply port.
Is connected. By twisting the tap of the faucet 11, the boiled hot water in the upper part of the hot water storage tank 1 is pushed out and supplied at a pressure set by the pressure reducing valve 3. That is, this system is a pre-stop type hot water storage water heater that stops hot water supply at the hot water supply port side of the hot water storage tank 1 to which the present invention is applied.

The drainage port 7 is well-known as a water seal, and water is filled up to the end surface of the pipe protruding into the recess, and a bowl-shaped lid is immersed in the water so as to cover the end surface of the pipe and the sewage is drained. It doesn't come with any odor. Of course, a water seal such as a trap may be used.

Next, the operation of this prestop type hot water storage water heater will be described.

When the electric heater 5 of the hot water storage tank 1 filled with tap water is energized, the water is heated. By this heating, the air in the water is separated to form bubbles, which rise and accumulate in the upper part of the hot water storage tank 1. With the bubbles, calcium ions and the like are deposited and rise, and adhere to the upper part of the hot water storage tank 1 and the conduit 6.

The opening / closing means 8 is opened at regular intervals according to the on / off operation of the heat source 5 or the amount of air. The interval and the number of times of opening and closing can be changed appropriately. By issuing a command for such a condition from the solenoid valve controller 9, for example, the valve or cock, here, the solenoid valve 8 is opened intermittently and forcibly. When the solenoid valve 8 is opened, the air is drained from the open end to the drain port 7 through the conduit 6 together with the hot water. At this time, scales such as calcium ions adhering to the pipe wall are often discharged together, and the scale is not fixed to the pipe wall. Since hot water containing dissolved substances does not stay in the conduit 6 or the like, high-quality hot water can be produced.

The hot water discharged intermittently from the conduit 6 is used as water for sealing the water in the drainage port 7. Therefore, even if the water is not used for a long period of time, the water will evaporate and a bad odor will not be produced. It does not occur.

When the faucet 11 of the stopper hot water storage water heater in such a state is opened, the hot water is supplied to the smooth without entraining air.

[0027]

As described above, according to the present invention, reliable air bleeding can be performed and stable pouring can be performed.

Further, according to the invention of claim 7, since the water in the water seal does not dry and disappear, it is possible to prevent a bad odor from entering.

[Brief description of drawings]

1 shows a preferred embodiment of the invention.

[Explanation of symbols]

 1 Hot water storage tank 2 Water supply pipe 3 Pressure reducing valve 5 Electric heater (heat source) 6 Conduit 7 Drainage port 8 Opening / closing means 9 Solenoid valve controller 10 Hot water supply pipe 11 Faucet 12 Relief valve 13 Water distribution pipe

Claims (7)

[Claims] 1. A stop type hot water supply water heater for stopping hot water supply at a hot water supply port side of a hot water storage tank, wherein air generated in the hot water storage tank at the time of boiling water is intermittently and forcibly discharged by an opening / closing means. Stop-type hot water storage water heater characterized by: 2. The hot water storage hot water supply device according to claim 1, wherein the opening / closing means comprises a valve or a cock, and the opening / closing means is provided in the middle of a conduit for guiding the air from the hot water storage tank to a drain port. 3. A pre-stop type hot water storage water heater according to claim 1, wherein the opening / closing means is opened for a fixed time every fixed time. 4. The prestop type hot water storage water heater according to claim 1, wherein the opening / closing means is opened according to at least one of ON / OFF operation of a heat source for boiling water. 5. The pre-stop type hot water storage water heater according to claim 1, wherein the opening / closing means changes the interval or the number of times of opening / closing according to the amount of the air. 6. The pre-stop type hot water storage water heater according to claim 1, wherein the opening / closing means is an electromagnetic valve. 7. A stop type hot water supply water heater for stopping hot water supply at a hot water supply port side of a hot water storage tank, wherein air generated in the hot water storage tank during boiling water is intermittently and forcibly discharged by an opening / closing means, and at the same time, the air is discharged. -A pre-stop type hot water supply water heater, wherein hot water discharged together with the hot water is discharged to a drain having a water sealing means.