JP2000008451A - Hot water tank structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce hot water in a short time and continuously supply hot water to a nozzle by providing a heater in a bypass passage for connecting the bottom part and upper part of a hot water tank. SOLUTION: When the nozzle of a private parts-washing device is used, a valve B2 is opened, a valve B1 is closed to supply water to the inside of a bypass passage R from a feed water opening 6, and water is warmed by a heater 5. Hot water ascends in a vertical pipe part 3b, passes through an upper pipe part 3c, and is flowed to a nozzle side continuously from a discharge opening 1a through the upper part of the inside of a hot water tank 1. When the water temperature of the bottom side of the inside of the hot water tank 1 in a state where the nozzle is not used, a temperature sensor 2 detects it, a pump P is driven in a state where the valve B1 is opened and the valve B2 is closed, and energization is performed on a heater 5. The cold water of the bottom side of the hot water tank 1 is warmed by a heater 5, passes through the upper pipe part 3c from the vertical pipe part 3b, and is returned to the upper part of the hot water tank 1. Thereby hot water can be continuously supplied to the nozzle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a hot water tank.

[0002]

2. Description of the Related Art Conventionally, a heater and a temperature sensor are provided in a hot water tank for supplying hot water to a nozzle of a local cleaning device, and the heater is turned on and off by the temperature sensor.
It is configured so that the cleaning water in the cleaning tank is maintained at a constant temperature by performing FF control. Conventionally, when a large amount of hot water is ejected from the nozzle of the local cleaning device, the cleaning water gradually cools down. Therefore, there is a problem that comfortable use cannot be performed. Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 7-268930, a heater is provided in a separate path from the hot water tank, and the washing water heated by the heater is mixed with the washing water in the hot water tank to obtain an appropriate temperature. There is a configuration in which this is supplied to the nozzle. In such a configuration, two heaters are provided in the hot water tank and in another path, and members such as a mixing valve for mixing are provided. However, there is a problem that the cost is increased, the size becomes large, and it is difficult to secure a space for installation.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and does not provide a compact hot water tank capable of continuously feeding hot water to a nozzle of a local cleaning device. The first gist of the present invention is to provide a hot water tank for supplying hot water to a nozzle for local cleaning, the hot water tank not having a heater, and a drain port to the nozzle side being formed in an upper portion thereof. And a bypass which connects the bottom part and the upper part of the hot water tank is provided, and a heater is provided in the bypass. A second gist is that the bypass is connected to the hot water tank from outside via a quick joint. The third gist is configured such that when the hot water in the hot water tank is cooled, hot water flows from the bottom of the hot water tank into the bypass passage and returns to the hot water tank from the top of the bypass passage. That is.

[0004]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional configuration diagram of a hot water tank. A hot water tank 1 of the present embodiment has no heater inside, and a drain port 1a for discharging hot water to a nozzle of a local cleaning device on an upper surface side.
Is opened, and a bottom connection port 1b is provided on a side surface of the bottom.
Is opened, and an upper connection port 1c is provided on the upper side surface.
Are open, and a temperature sensor 2 is provided on the bottom side inside.

[0005] The bottom connection port 1b and the upper connection port 1c are connected by a bypass path R, and a substantially U-shaped bypass pipe 3 forming the bypass path R has a horizontal bottom. A pipe section 3a, a vertical pipe section 3b rising at a right end of the bottom pipe section 3a, and an upper pipe section 3 forming a horizontal direction at an upper end of the vertical pipe section 3b.
c, a heating chamber 4 whose diameter is expanded downward is formed in the bottom tube portion 3a.
The heater 5 is provided in the inside, and a valve B2 is provided upstream of the heater 5 (on the side of the bottom connection port 1b).
A water supply port 6 is formed, and the cleaning water is supplied from the water supply port 6 into the bypass passage R.

The left end of the bottom tube portion 3a is the hot water tank 1
Is connected to the bottom connection port 1b in a watertight manner by a quick joint 7 with a seal material 8 interposed therebetween, and the left end side of the upper pipe portion 3c is provided with a seal material 8 at the upper connection port 1c of the hot water tank 1. Then, they are connected by the quick joint 7. A valve B1 that is opened and closed by the temperature sensor 2 is provided at the bottom connection port 1b of the hot water tank 1, and a pump P is provided on the hot water tank 1 side or in the bypass R. The heater 5 is of a small size. For example, a sheathed heater, a ceramic heater, or a microwave-type heater can be used.

In such a configuration, when hot water is jetted from a nozzle of a local cleaning device (not shown) and the nozzle is used, the valve B2 is opened and the valve B1 is closed, so that the water supply port 6 is connected to the bypass passage R. Water is heated by the heater 5, and the warmed water rises up the vertical pipe portion 3b, passes through the upper pipe portion 3c, passes through the upper portion in the hot water tank 1, and continuously from the drain port 1a to the nozzle side. Even when a large amount of hot water is ejected from the nozzle for a long time, the washing water from the water supply port 6 is heated by the heater 5 and the hot water can be continuously supplied to the nozzle side. Therefore,
When the nozzle is used, even if the bottom portion of the hot water tank 1 is in a cold state, the hot water passing through the bypass R is maintained at a good temperature and is continuously discharged from the drain port 1a to the nozzle side. Become.

In the state where the nozzle is not used,
When the water temperature on the bottom side in the hot water tank 1 drops, the temperature sensor 2 detects this, and when the valve B1 is open and the valve B2 is closed, the pump P is driven and the heater 5 is energized. Cooled water on the bottom side of the tank 1 flows from the bottom connection port 1b into the bypass R, and is heated by the heater 5, and the warmed hot water rises up the vertical pipe portion 3b and the upper pipe portion 3
c, is returned to the upper part of the hot water tank 1 and
It is possible to always maintain the appropriate temperature of warm water in the upper part of the inside of the inside, and only the cold part at the bottom of the warm water tank 1 can be efficiently heated by the heater 5,
Conventionally, the entire inside of the hot water tank 1 is heated,
Although it took too much time to raise the water temperature of the entire hot water tank 1, in the structure of the present embodiment, the upper portion of the hot water tank 1 is efficiently heated in a short time, and the warmed hot water is discharged to the drain port 1.
Since hot water can be supplied from a to the nozzle, hot water can be generated in a short time. In particular, when the hot water tank 1 is large, it is possible to satisfactorily discharge hot water of an appropriate temperature from the upper portion to the nozzle side, and it is possible to continuously send hot water to the nozzle side.

Further, in this embodiment, the bypass pipe 3 forming the bypass path R can be easily connected to the hot water tank 1 by using the quick joint 7, and is completely sealed with the sealing material 8 to completely waterproof. The heater 5 can be provided at a location away from the hot water tank 1, and if the bypass pipe 3 is formed of a flexible pipe, the layout becomes easy, the installation on the toilet is easy, and the design is free. The degree is also improved.

[0010]

According to the present invention, there is provided a hot water tank for supplying hot water to a nozzle for local cleaning, wherein the hot water tank does not have a heater, and a drain port to the nozzle side is formed in an upper portion thereof. By providing a bypass connecting the bottom part and the upper part of the hot water tank, and by providing a heater in the bypass, it can be formed in a compact shape. The hot water can be continuously supplied to the nozzles, and it is not necessary to heat the whole area of the hot water tank as in the past, and it is possible to generate hot water in a short time and continuously supply hot water to the nozzles Having.

Further, since the bypass is connected to the hot water tank from outside via a quick joint, the bypass is easily connected to the hot water tank, so that the layout is easy and the degree of freedom of design is improved. And has the effect of making the waterproofness perfect.

Further, when the hot water in the hot water tank is cooled, the hot water flows from the bottom of the hot water tank into the bypass passage, and the hot water returns from the upper portion of the bypass passage into the hot water tank. When the temperature at the bottom of the hot water tank drops, the hot water tank is returned to the hot water tank as hot water by passing through the bypass passage, so that only the cold portion of the hot water tank can be efficiently heated.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a state in which a bypass is connected to a hot water tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot water tank 1a Drain port 1b Bottom connection port 1c Upper connection port 2 Temperature sensor 3 Bypass pipe 3a Bottom pipe section 3b Vertical pipe section 3c Upper pipe section 4 Heating chamber 5 Heater 6 Water supply port 7 Quick joint 8 Sealing material R Bypass path

Claims (3)

[Claims] 1. A hot water tank for supplying hot water to a nozzle for local cleaning, the hot water tank not having a heater, a drain port to the nozzle side being formed in an upper portion, and a hot water tank. A hot water tank structure, characterized in that a bypass path connecting the bottom part and the upper part is provided, and a heater is provided in the bypass path. 2. The hot water tank structure according to claim 1, wherein the bypass path is connected to the hot water tank from outside via a quick joint. 3. When the hot water in the hot water tank cools,
3. The hot water tank structure according to claim 1, wherein the hot water flows from the bottom of the hot water tank into the bypass passage, and the hot water is returned from the upper portion of the bypass passage into the hot water tank. .