JPS6035004Y2 - electric water heater - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a first stop type hot water storage type electric water heater.

Fig. 1 shows the piping diagram of the electric water heater for Centsil hot water, which is conventionally used in general households.
6 or 0.65 kg/cIt, 2 is an electric water heater equipped with an electric heater 5, 3 is a faucet connected to the end of the hot water supply pipe 20, 4 is a safety valve branched from the hot water supply pipe, and a blowout Pressure is 0.9 or 0.95
kg/alt, and the tank internal pressure is set to 11kg/alt.
! It works to hold down the following.

The problems with such electric water heaters that are directly connected to the water source are as follows: (1) Since the tank of an electric water heater is considered a hot water storage tank that is directly connected to the water source, it has the strength to withstand water pressure of 7, 5, or 9/d, which is set as a standard. is required.

For this reason, the tank was made of iron, and the inner surface had to be enameled to ensure corrosion resistance, and an anti-corrosion device had to be installed, making it expensive and heavy.

(2) To avoid being subject to boilers stipulated by law1
As a method for using an internal pressure of kg/c1M or less, it is configured in combination with the pressure reducing valve 1 and the safety valve 4 described above.

For this reason, the hot water supply pressure was not sufficient, and many users complained of problems, especially when using the shower.

Also, with the improvement in living standards, there is a desire for hot water supply to the second floor, but 1kg/C7I! The reality was that it was not possible to provide satisfactory hot water at this water pressure.

The present invention aims to eliminate such drawbacks, and one embodiment will be described below with reference to the drawings.

FIG. 2 is a structural diagram showing an embodiment of an electric water heater according to the present invention, in which 6 is a tank made of synthetic resin, and a lid 8 has a flange 9 formed on the top surface with a small hole 7 for ventilation. is attached.

Reference numeral 10 denotes a water supply valve device provided on the upper side of the tank 6, which opens and closes water supply from a water source connected to the water supply valve device 10 from the outside by operating a water supply ball tap 11.

12 is watertightly fixed to the inner wall surface of the tank 6.
It is an anti-icing plate that partitions the interior into an upper layer B and a lower layer A, and is provided below the water stop surface 13 of the ball tap 11.

The water control plate 12 has a water supply pipe 14 for guiding ice in the upper layer B to the bottom of the tank 6, and a small hole 7 that opens above the water stop surface of the ball tap 11 and connects the lower layer A to the lid 8. Each is provided with a ventilation pipe 15 communicating with the atmosphere via the air pipe.

Reference numeral 16 denotes a hot water inlet, and reference numeral 17 denotes an electric heater watertightly attached to the lower part of the tank 6.

FIG. 3 is a piping diagram when the electric water heater according to the present invention is used, 18 is the electric water heater according to the present invention, and the water supply valve device 10 is directly connected to the water source.

A hot water pump 19 is installed in the middle of the hot water supply pipe 20 from the hot water supply port 16.
The faucet 3 is connected to the terminal.

To explain the operation in the above configuration, the water in the lower layer A of the water control plate 12 is heated by the electric heater 17 and becomes hot water.

When the faucet 3 is opened here, the operation of the hot water supply pump 19 is started, and the hot water in the lower layer A is sucked through the hot water supply port 16 and used.

The amount of water used is that cold water in the upper layer B of the water control plate 12 enters the lower part of the lower layer A through the water supply pipe 14.

When cold water flows into the lower layer A, the water stop surface 13 lowers and the ball part of the pole tap 11 lowers, so the water supply valve device 10 connected to the water source opens and water supply to the tank 6 is started.
Water supply continues until the water stop surface 13 returns to its original position.

The ventilation pipe 15 is for maintaining the lower layer A at atmospheric pressure, and its role is to discharge gases such as air contained in the water and to escape the body expansion that occurs when the water in the lower layer A is heated and becomes hot water. It functions as a safety valve 4 in the closed type shown in FIG.

As described above, the device according to the present invention has a ball tap 11 and a water supply valve device 10 built into the upper part of the tank 6, and is not subject to a device directly connected to a water source, so it is possible to construct the tank 6 with synthetic resin. be.

In this regard, conventional tanks that are directly connected to water sources require pressure-resistant strength, so the inner surface of the iron tank is enameled and a corrosion protection device is built in, making it expensive.However, in the present invention, the tank 6 is made of synthetic resin. By molding, there is no need for anti-corrosion equipment, so it has the advantage of being able to provide an inexpensive and lightweight water heater.

Furthermore, since the electric water heater according to the present invention is an open type, there is no restriction on the operating pressure, and a sufficient amount of hot water can be ensured by setting the capacity of the hot water pump.

Therefore, it has the advantage of solving problems of insufficient flow rate and insufficient pressure in actual use such as showers and second floor hot water supply.

Furthermore, since the water supply pipe and the ventilation pipe are provided on the water control plate that partitions the inside of the tank into an upper layer and a lower layer, there is no need to connect these pipes to the tank, and the configuration can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a piping diagram of a conventional electric water heater, FIG. 2 is a structural diagram showing an embodiment of the electric water heater according to the present invention, and FIG. 3 is a piping diagram of the electric water heater according to the present invention. 6 is a tank, 10 is a water supply valve device, 11 is a ball tap,
12 is a water control plate, 14 is a water supply pipe, 15 is a ventilation pipe, 16 is a hot water inlet, and 17 is an electric heater.

Claims (1)

[Scope of utility model registration request] A tank, a water control plate that partitions the inside of the tank into an upper layer and a lower layer, a water supply valve device consisting of a ball tap provided in the upper layer of the tank, and a water supply that supplies water from the upper layer to the bottom of the lower layer. a vent pipe that opens above the water stop surface of the ball tap in the upper layer and communicates the lower layer with the atmosphere;
It is equipped with an electric heater that heats the water in the lower layer and a hot water inlet that takes out the hot water in the lower layer to the outside, the water supply pipe and the ventilation pipe are provided on a water control plate, and the tank is formed of synthetic resin. An electric water heater featuring