JPS6249153A - Water heater used concurrently for melting snow - Google Patents

Abstract

PURPOSE:To make it possible to supply a large amount of hot water to a snow melting nozzle and drain residual water by disposing water interrupting valves and a water governor at the heat exchanger outlet of a water heater, disposing water interrupting valves at the upper and lower parts of a cross part perpendicularly intercrossing therebetween, and opening or closing the water interrupting valves by means of a remote operating panel. CONSTITUTION:When a hot water operating switch of a remote operating panel 13 is turned ON, a water interrupting valve 6a is opened. When a hot water supply cock 14 is opened, water flows and a flow amount switch 3 is turned ON, a fuel interrupting valve 11 is turned ON to ignite a burner 9 whereupon a heat exchanger 4 is heated and water is heated to hot water. Since water interrupting valves are closed, hot water passes the water governor 8 and is obtained through the hot water cock 14. When a snow melting switch is turned ON, water interrupting valves 6a and 6b are opened, the hot water supply cock 14 is closed and hot water is supplied from snow melting nozzle 1 and does not pass through the water governor 8. Therefore, the higher the waver pressure is, the more the flow amount is secured, and the higher the snow melting effect is obtained. When a drain switch is turned ON, the water interrupting valve 6a is closed, and water interrupting valves 6b and 6c are opened and residual water is drained out of the apparatus through an overflow pipe 15.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a water heater that has a roof melting function added to the functions of a normal water heater.

Conventional technology Conventional methods for melting snow on roofs include manually removing snow, spraying water from a sprinkler, spraying hot water from a water heater, or embedding a hot water heater in the roof. There was a way to melt the snow.

Hereinafter, an example of the conventional snow melting means mentioned above will be explained with reference to the drawings.

3 and 4 show conventional snow melting means. In Figure 3, (ge is the water nozzle, (2) is the water heater, 0
3' is an operation remote control. In Figure 4, (4)'
is a snow melting heater, and (5)' is a circulation pump. Figure 3 shows a method that uses a conventional water heater as is for snow melting, and Figure 4 shows a method that circulates hot water with a circulation pump (5)' and melts snow with a heater (4)' attached to the roof. 0 Problems to be Solved by the Invention However, with the method shown in FIG. 3, the amount of hot water is small.

This is because a water governor is used. Furthermore, there is a possibility that the hot water in the conduit up to the water spray nozzle (1)' remains after water sprinkling and freezes. In the figure, (3) is a flow rate switch, (4) is a heat exchanger, (5) is a temperature sensor, and (8) is a heat exchanger.
) is the water governor, (9) is the burner, (II is the fuel control valve, (Ill is the fuel shutoff valve, α is the control i1, Q
:1' indicates a remote operation board. The operation of the water heater will be described later.

Furthermore, the method shown in FIG. 4 has the problem of requiring a huge amount of equipment.

Means for Solving the Problems The present invention connects a hot water faucet and a snow melting nozzle to a heat exchanger,
A burner provided with a fuel control valve and a fuel cutoff valve is disposed in the heat exchanger, and an overflow pipe is connected to a connection portion of the waterway pipe to the hot water faucet and the snow melting nozzle to form a cross section of the waterway pipe, A water governor surrounds the cross section and connects to the hot water faucet, while a water governor is provided at the heat exchanger outlet, a snow melting nozzle,
and a water solenoid valve in the overflow pipe, a flow rate switch at the inlet of the heat exchanger, a temperature sensor at the outlet, and a controller connected to a remote operation board, and the burner and water solenoid valve are connected to the remote controller. In the operation mode of the operation panel,
It is configured to control the heat exchanger and each water solenoid valve to supply hot water to the hot water faucet and snow melting nozzle and to drain remaining water.

A water shutoff valve and a water governor are provided on the outlet side of a heat exchanger of a water heater having a hot water temperature regulator, and a cross section that intersects perpendicularly is interposed between the water shutoff valve and the water governor. , a water shutoff valve is provided on the outlet side of the cross portion,
In addition, the operation modes include hot water supply, snow melting, and drainage, and during hot water supply operation, the water shutoff valve on the outlet side of the heat exchanger is opened,
Others are closed. During the snow melting operation, the upper water shutoff valve at the outlet of the cross portion is opened in the state during the hot water supply operation.

During drainage operation, the water shutoff valve on the outlet side of the heat exchanger is closed, and each of the water shutoff valves on the cross section outlet side is opened, so hot water supply operation can be performed without any problems during normal hot water supply operation. In addition, during snow melting operation, a large amount of hot water can be supplied to the snow melting nozzle without water flow restrictions because it does not pass through a water governor.

In addition, the drainage operation allows all remaining water accumulated in the snow melting nozzle and conduit to be drained, so there is no need to worry about freezing.

Embodiment FIG. 1 is a block diagram of an embodiment of the snow melting water heater of the present invention.
FIG. 2 shows an implementation state diagram of FIG.

In the figures, the same reference numerals as in FIGS. 3 and 4 indicate the same parts and parts.

The PIη configuration of the snow melting water heater of the present invention will be explained.

The main body (2) within the dashed-dotted line frame is a snow melting water heater;
6) is a water shutoff valve (6a, 6b, and 6c collectively), (7) is a cross section, 03 is a controller, and Q31 is a remote operation panel.

The operation of the snow melting water heater of the present invention configured as described above will be described below.

When the hot water supply operation switch for the 0th tank on the remote control panel is turned on, the water cutoff valve 6a opens, and when the hot water supply faucet 04 is opened, water flows and the flow rate switch (3) is turned on, and the fuel cutoff valve aυ is turned on. The burner (9) is ignited, heating the heat exchanger (4) and turning the water into hot water. Water shutoff valve 6b,
6c is closed, hot water passes through the water governor (8) and is obtained from the hot water faucet a4. When the snow melting switch on the remote control panel αj is turned on, the water shutoff valves 6a and 6b open, and when the hot water faucet α→ is closed, the snow melting nozzle (1) opens.
As shown in Figure 2, if a snow melting nozzle (11) is installed on the roof, the snow accumulated on the roof will be melted by the heat of the hot water. ), the higher the water pressure, the more flow is ensured and the more effective snow melting becomes.

When the drain switch on the remote control panel θ is turned on, the water shutoff valve 6a closes, 6b and 6c open, and the snow melting nozzle (1) and the remaining water that has accumulated in the middle of the nozzle drains out of the machine through the overflow pipe α9. be discharged. Therefore, the next time you use the snow melting function, there is no worry that the hole in the snow melting nozzle (11) will become clogged due to freezing, so you can melt the snow without any trouble.

As described above, according to the embodiment of the present invention, the water shutoff valve 6a and the water governor (8) are provided on the outlet side of the heat exchanger (4) of the water heater.
), and a cross section (
7), water shutoff valves 6b and 6c are provided above and below the cross portion (7), and the remote control panel OJ can be used for water supply, snow melting,
Water solenoid valves 6a, 6b, 6 in each drainage operation mode
By opening and closing c, it is possible to melt snow and supply hot water.

Effects of the Invention The present invention arranges a water shutoff valve and a water governor at the heat exchanger outlet of a water heater, and arranges water shutoff valves above and below the cross section with a cross section intersecting vertically between them. By setting the snow melting nozzle on the roof, the water shutoff valve opens and closes depending on the operation mode of the remote control panel, and you can easily remove snow accumulated on the roof using the indoor remote control panel. It can be used to melt snow, and when the snow melting function is not in use, it can also be used as a regular water heater. Furthermore, since the snow melting nozzle and any remaining water can be drained, there is no need to worry about freezing, so snow can be melted at any time with a single operation.
Automation of snow removal from the roof can be achieved at low cost.

[Brief explanation of the drawing]

FIG. 1 is a structural diagram of an embodiment of the snow melting water heater of the present invention;
FIG. 2 shows an implementation state of FIG. 1, and FIGS. 3 and 4 show examples of conventional snow melting means. 1: Snow melting nozzle 2: Main body 3: Takigawa switch
4: Heat exchanger 5: Temperature sensors 6a, 6b, 6c
:Water shutoff valve 7:Cross part 8:Water governor
9: Burner ■O: Fuel control valve IJ: Fuel shutoff valve 12: Controller 13: Remote operation panel 14
: Hot water faucet 15 nitrogen flow pipe

Claims (1)

[Claims] A hot water faucet and a snow melting nozzle are connected to a heat exchanger, a burner equipped with a fuel control valve and a fuel cutoff valve is installed in the heat exchanger, and an overflow pipe is connected to the water pipe connection to the hot water faucet and the snow melting nozzle. are connected to form a cross section of water pipes, surrounding the cross section, a water governor is installed on the water pipe leading to the hot water faucet, and a water solenoid valve is installed on the heat exchanger outlet, snow melting nozzle, and overflow pipe. A flow rate switch is provided at the inlet of the heat exchanger, a temperature sensor is provided at the outlet, and a controller is provided to which a remote operation panel is connected. This snow melting water heater is configured to supply hot water to a hot water faucet and a snow melting nozzle and drain remaining water by controlling each water solenoid valve.