JPH054500B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a sanitary cleaning device.

Structure of conventional example and its problems The conventional sanitary washer shown in FIG. be done.

In addition, in the heat retention state, the heater by the liquid expansion type thermometer 4
The water temperature is maintained at a predetermined level through ON-OFF control.
When in use, the motor switch 5 is turned on, the water stop valve 6 is opened, the motor 7 is started, and the pump 8 is turned on.
The water in the low tank 9 is sucked in by the water supply pipe 10.
Water is supplied into the container 1 through the container 1, and the hot water in the container 1 is spouted from the nozzle 12 through the hot water supply pipe 11 in the upper part of the container 1. The amount of hot water spouted from the nozzle 12 is adjusted by changing the opening degree of the control valve 13 to increase or decrease the amount of water that returns to the pump 8 through the bypass channel 14, and by increasing or decreasing the amount of water sucked from the low tank 9. It's on.

The first problem with the conventional example is that a certain distance is required between the sheathed heater 3 and the inner wall of the container 1 to ensure safety in the event of an abnormality such as when the liquid expansion type thermometer 4 breaks down or when the container 1 is energized without water. Therefore, during heat retention, the water in the upper part 1a of the heat generating part of the sheathed heater 3 is sufficiently heated;
The temperature of the water only rises due to natural convection, and the temperature distribution inside the container is not uniform, so the amount of high-temperature water is small.
At the beginning of use, hot water in the high temperature section is spouted from the nozzle 12, but when the hot water in the low temperature section begins to spout, the jetting temperature drops rapidly as shown in FIG. 5a.

The second problem with the conventional example is that during use, cold water is supplied vigorously from the bottom of the container 1, so the hot water in the container 1 is stirred, and the cold water bypasses the hot water supply pipe 11 at the top of the container 1 and enters the nozzle 12. Since the gas is ejected from the beginning, the ejection temperature drops rapidly from the start of ejection, as shown in FIG. 5b.

As a result of the combination of these first and second problems, the conventional hot water bath had a problem in that the duration of the comfortable hot water temperature was extremely short, as shown in FIG. 5c. (The hot water at startup
If the comfortable water temperature is defined as the time it takes for the temperature to drop by 2 degrees, in this case, the time it takes for the hot water that was 40 degrees Celsius at startup to drop to 38 degrees Celsius is 16 seconds. ) Purpose of the invention The present invention solves the above-mentioned conventional problems.
The purpose is to extend the duration of a comfortable hot water temperature in a hot water storage type sanitary washing device.

Structure of the Invention In order to achieve the above object, the sanitary cleaning device of the present invention includes a heat soaking plate made of a material with good thermal conductivity inserted between the bottom surface of the heater and the bottom surface of the container. This structure has a vertical wall that rises up along the inner wall, and this structure makes the water temperature distribution uniform inside the container when keeping warm, and also prevents the hot water inside the container from stirring during use, making it more comfortable. This increases the duration of the hot water temperature.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, reference numeral 1 denotes a container for storing hot water made of resin, including a sheathed heater 3, a heat equalizing plate 15 having a concave longitudinal section and made of copper or the like having good thermal conductivity, and a container 1.
Liquid expansion thermometer 4 to keep the water temperature inside at a predetermined temperature
is stored. The inside of the container 1 is separated by a heat soaking plate 15 into an upper high temperature chamber 16 and a lower low temperature chamber 17. 8 is a nozzle 1 that sucks water from a low tank 9.
This is a pressurizing pump for spouting hot water from 2. In FIG. 4, 15a is an opening of the heat equalizing plate 15;
5b is a shielding plate provided above it. Reference numeral 15c denotes a vertical wall portion rising from both ends of the heat equalizing plate 15 along the inner wall of the side surface of the container, and the height thereof is higher than the main portion of the sheathed heater 3.

The operation of the above configuration will be explained below.

When not in use, when the heat retaining heater switch 2 is turned on, the water in the container 1 is heated by the sheathed heater 3. In the heat retention state, the water temperature is maintained at a predetermined level by the heater ON/OFF control by the liquid expansion type thermometer 4. When in use, the motor switch 5 is turned on, the water stop valve 6 is opened, the motor 7 is started, and the pump 8 sucks water from the low tank into the cold room 17 in the container 1 through the water supply pipe 10. supplied to This water is decelerated in the low temperature chamber 17 toward the opening 15a, passes through the opening 15a, is changed direction by the shielding plate 18 toward the sheathed heater 3 (horizontal direction), and enters the high temperature chamber 16. . Then, the hot water in the high temperature chamber 16 is pushed up by the amount that has entered, and is passed through the hot water outlet pipe 11 at the top of the container 1 to the nozzle 12.
It is ejected from. The amount of hot water spouted from the nozzle 12 is adjusted by changing the opening degree of the control valve 13 to increase or decrease the amount of water that returns to the pump 8 through the bypass channel 14, and by increasing or decreasing the amount of water sucked from the low tank 9. It's on.

In this embodiment, the heat of the sheathed heater 3 is spread throughout the high temperature chamber 16 (particularly the upper and lower portions) by the standing wall portion 15c of the heat soaking plate 15 during heat retention.
The hot water temperature distribution within 6 becomes uniform. In addition, the soaking plate 15
The cold chamber 17 also serves as a shield when the liquid expansion thermostat malfunctions or when the heater is heated abnormally due to energization of the heater without water in the container, so safety is ensured even if the sheathed heater 3 and the inner wall of the container are close to each other. can. Therefore, the low temperature chamber 17 is very small, and the high temperature chamber 16 can be made large. This ensures a large amount of hot water at a uniform temperature. On the other hand, during use, the inflowing water is sufficiently decelerated in the low temperature chamber 17 by the heat equalizing plate 15 extending in the substantially horizontal direction, and the hot water in the high temperature chamber 16 to be supplied to the high temperature chamber 16 is not stirred but pushed up. To go. As a result, the duration of the comfortable hot water spouted from the nozzle 12 is maintained for a long time as shown in FIG. 5D. (It takes 75 seconds for hot water that is 40°C at startup to reach 38°C.) Figure 3 shows another embodiment in which the opening 15a side of the heat equalizing plate 15 is tilted slightly upward. It is something. Also, Figure 2,
Although the sheathed heater 3 and the heat equalizing plate 15 are shown separated in FIG. 3, they may be in contact with each other.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) When keeping warm, the heat equalizing plate makes it easier for the heat from the heater to spread throughout the water above and below the container, making the hot water temperature distribution more uniform and increasing the amount of hot water that can be comfortably used. In addition, since the heating plate and the chamber formed by the heating plate and the bottom of the container act as a shielding plate when the heater overheats, the cold room is very small and the high temperature room can be made larger. However, it became possible to secure a large amount of hot water at a uniform temperature. On the other hand, during use, water that has been sufficiently decelerated in the low-temperature chamber is supplied to the high-temperature chamber, making it difficult for the hot water in the high-temperature chamber to be agitated, and as a result, the hot water ejected from the nozzle at a comfortable temperature can be maintained for a long time.

(2) When the heater overheats, the side wall, which is at the highest temperature in the container and is likely to undergo thermal deformation, is protected by the heat dissipation and heat shielding effects of the standing wall of the heat equalizing plate.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional sanitary cleaning device, FIG. 2 is a longitudinal sectional view of a sanitary cleaning device which is an embodiment of the present invention, and FIG. 3 is a longitudinal sectional view of a sanitary cleaning device which is another embodiment of the present invention. FIG. 4 is a longitudinal cross-sectional view, FIG. 4 is a perspective view of a heat equalizing plate of a sanitary washing device according to an embodiment of the present invention, and FIG. 5 is a graph of the change in hot water temperature when the water temperature is 10° C. and the jet flow rate is 0.8/min. 1... Container, 2... Heater switch, 3
...Sheathed heater, 4...Liquid expansion thermometer, 5...
Motor switch, 6...Water stop valve, 7...Motor,
8...Pump, 10...Water supply pipe, 11...Hot water supply pipe, 12...Nozzle, 13...Control valve, 14...
Bypass pipe, 15... Soaking plate, 15a... Opening, 15b... Shielding plate, 15c... Standing wall portion.

Claims (1)

[Scope of Claims] 1. A container made of resin that houses the heater and the sensor section of the hot water temperature control device, and a material with good thermal conductivity that extends substantially laterally between the bottom surface of the heater and the bottom surface of the container. a water supply pipe that hydraulically connects the bottom of the container and the pump, and a water supply pipe that hydraulically connects the top of the container and the hot water tap nozzle; A sanitary cleaning device with a standing wall that runs along the side inner wall. 2. The sanitary cleaning device according to claim 1, wherein the vertical walls are provided at both ends of the heat soaking plate. 3. The sanitary cleaning device according to claim 1, wherein the bottom surface of the heater and the heat soaking plate are in contact with each other. 4. When the heat soaking plate is installed in the container, the heat soaking plate has an inclination and has an opening at the top thereof leading from below the heat soaking plate to above the heat soaking plate. Sanitary cleaning equipment as described. 5. The sanitary cleaning device according to claim 4, wherein a shielding plate is provided above the opening.