JPS5853254B2 - Kyuutousouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water heater, and its purpose is to obtain a large amount of high-temperature water that cannot be obtained with currently commonly used water heaters. Even if the power supply capacity is small, it can be used satisfactorily and has the effect of limiting the locations requiring a heat insulating structure.The details will be explained as follows.

In the figure, 1 is a first tank and 2 is a second tank.

Reference numeral 3 denotes a conduit connected to the upper side of the second tank 2, the tip of which is inserted into the first tank 1 and opened downward within the first tank 1.

A water supply pipe 4 leads to a water supply source, and is connected to the lower side of the first tank 1 via a solenoid valve 5.

Further, an outlet pipe 7 having a solenoid valve 6 is connected to the lower part of the second tank 2.

Reference numeral 8 denotes a control device, which includes a first heater 9, a second heater 10, a first water temperature detection device 11, and a second water temperature detection device provided in each tank 1, 2.
Detection device 12, level detection device 13 and solenoid valves 5 and 6
The solenoid valves 5.6 and heaters 9 and 10 are controlled by the detection devices 11, 12, and 13 as described below.

That is, cold water flows from the water supply pipe 4 through the solenoid valve 5 to the first tank 1.
The water level in the tank 1 is detected by the level detection device 1.
When the water level reaches 3, the control device 8 closes the electromagnetic valve 5 to maintain the water level in the tank 1 within a certain range.

The cold water in the tank 1 is heated by the first heater 9, but when the temperature rises to a certain temperature, the control device 8 is actuated by a signal from the detection device 11, and the power to the heater 9 is cut off. When the temperature of the hot water drops to a certain level, the temperature of the water in the tank 1 is maintained within a certain range by repeating the action of energizing the heater 9.

That is, the hot water in the first tank 1 is always kept at a constant level and temperature.

The hot water in the first tank 1 is supplied to the second tank 2 through a conduit 3, so the hot water heated to a predetermined temperature in the tank 1 enters the second tank 2, and the second heater 1
0 to a higher temperature, and by automatic control of the heater 10 of the control device 8 based on the signal from the second detection device 12, the second
The temperature of the hot water in the tank 2 is maintained at a considerably higher temperature than the temperature of the hot water in the first tank 1.

Therefore, when the solenoid valve 6 is opened, the high temperature hot water in the second tank 2 is discharged from the outlet pipe 7, but when the level of the hot water in the first tank 1 decreases, the solenoid valve 5 opens and water is supplied from the water supply pipe 4. be done.

The present invention is characterized in that, as described above, the hot water is heated in advance to a suitable temperature in the first tank with a large capacity, is further heated in the second tank with a small capacity, and is then discharged as hot water. There is.

In other words, if hot water is taken out continuously only from the first tank, the tank capacity is large, and since cold water flows in and must be heated, the heating by the heater cannot keep up, and therefore high temperature water cannot be obtained. There are drawbacks that cannot be avoided.

However, in the case of the present invention, hot water is heated in advance in a large-capacity first tank and then heated to a high temperature in a small-capacity second tank before being discharged, so that a large amount of hot water can be obtained even at a fairly high temperature.

Also, since the hot water in the first tank is set to medium temperature and the hot water in the second tank is set to high temperature, the first tank has a simple insulation structure, and only the small second tank has a strict insulation structure. This has advantages such as easy insulation.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional front view of the main part of the device of the present invention. 1...First tank, 2...Second tank, 3...Conduit, 9...First heater, 1
0...Second heater.

Claims (1)

[Claims] 1 A first tank and a second tank having a smaller capacity than the first tank are provided, and the first tank has a first tank that detects the water temperature.
A detection device, a first heater, and a level detection device for detecting the water level are provided, and a conduit is provided between the first tank and the second tank for introducing hot water from the upper layer in the first tank into the second tank,
The second tank is provided with a lead-out pipe for discharging a fixed small amount of hot water each time a request is made, and is also provided with a second detection device that detects the temperature of the water and a second heater that heats the water, and the first detection device The first heater and the second heater are controlled by the signals from the second detection device and the level detection device, respectively, to maintain the water temperature in the first tank at a constant temperature, and to keep the water temperature in the second tank at a constant temperature. 1. A hot water supply device comprising: a control device that maintains a constant temperature higher than the temperature of hot water in the first tank and controls water supply to the first tank to maintain a constant level in the first tank.