JPH0624457Y2 - Hot water tank for hot water washing device - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention relates to a hot water tank for a hot water cleaning device attached to a Western-style toilet, etc. And to prevent hot water of high heat from being fed to the hot water cleaning device.

(Conventional Hot Water Tank) FIG. 3 is a front sectional view showing a conventional hot water tank 1.
The hot water tank 1 has a capacity of 1 to 3, and is a comparatively large-sized hot water tank of this kind. The hot water tank 1 uses the heater 5 to supply the water supplied from the water supply port 4.
The hot water is heated and stored in the hot water, and this hot water is sent from the hot water outlet 2 to a hot water washing device (not shown) as needed. The heating condition of the heater 5 was controlled by the temperature sensitive tool 6a suspended in parallel with the heater 5. The temperature sensitive device 6a
As shown in FIG. 4, the thermostat 6 forms a part of the thermostat 6 for controlling the opening and closing of the power supply circuit of the heater 5, and keeps the temperature of the hot water in the tank within the range of 39 ± 2 ° C. The tank ceiling surface 1a
Has an overheat detector 3 embedded near the water supply port 4, and when the thermostat 6 fails and the hot water storage temperature reaches a critical temperature of 60 ° C or higher, the power supply circuit of the heater 5 is cut off. It was supposed to end up.

(Problems to be Solved by the Invention) The hot water heated by the heater 5 initially stays in the shallow water level in the tank. Then, convection occurs between the shallow water level portion and the deep water level portion, and eventually the temperature distribution in the tank becomes uniform.

By the way, the thermostat 6 controls the heater 5 by the electric resistance generated comprehensively or cumulatively in the entire length of the temperature sensitive device 6a with respect to the temperature distribution at each water level along the depth direction in the tank. That is, the operating temperature of the thermostat 6 is
It corresponds to the temperature of approximately the middle water level in the tank. Therefore, even if hot water starts to stay in the shallow water level, the heater 5 continues to be heated, and when the temperature sensing device 6a detects a predetermined operating temperature, the temperature difference between the shallow water level and the deep water level is 30 ° C. Sometimes reached. That is, in the shallow water level, hot water far exceeding a predetermined temperature in the tank is retained, and there is a risk of burns or the like if a hot water cleaning device (not shown) is used in this state. Also, the overheat detector 3 attached to the tank ceiling surface 1a detects an abnormality, and the heater 5
Sometimes the power supply circuit was cut off. The restoration of the disconnected power supply circuit requires maintenance by a specialized company, which is an extremely troublesome repair work.

The present invention has been made in view of the above circumstances, and can completely eliminate the risk of burns and the like when using a hot water cleaning device, and the heater power supply circuit can be cut unnecessarily by the overheat detector. It is an object of the present invention to provide a new hot water tank (hereinafter referred to as the tank of the present invention) for a hot water cleaning device, which can also prevent the occurrence of water.

"Configuration of device" (Means for solving the problem) The feature of the configuration adopted by the present invention to achieve the above-mentioned object is that in a hot water tank for a hot water cleaning device having a heater, the tank is A partition wall that partitions the water area facing the overheat detector provided on the inner surface of the ceiling or the inner surface of the peripheral wall and the water area directly above the heater is hung vertically on the ceiling surface of the tank, and a hot water washing device has a tap hole. It is located at substantially the same height as the lower end of the partition wall or at a position below it.

(Function) Since the water area facing the overheat detector and the water area directly above the heater are partitioned by the partition wall that is hung vertically on the tank ceiling surface, the hot water overheated far above the specified temperature inside the tank is placed in the water area directly above the heater. Even if it stays, the superheated water does not reach the overheat detector beyond the partition wall. That is, initially, the supply water surrounding the overheat detector is gradually transferred from the above superheated hot water through the partition wall. However, the temperature does not rise above the operating temperature. Therefore, the heater power supply circuit is not accidentally disconnected by the overheat detector. Further, since the hot water washing device has a hot water outlet provided at substantially the same height as or lower than the lower end of the partition wall, the overheat detector does not operate, that is, the hot water stays. As long as an unexpected situation in which the water level exceeds the lower end of the partition wall does not occur, there is no possibility that superheated hot water will be fed from the hot water outlet. Therefore, there is no possibility of getting burned when using the warm water cleaning device.

(Embodiment) The present invention will be described below with reference to the drawings showing an embodiment thereof.

FIG. 1 is a front sectional view showing the tank of the present invention. A partition wall 8 and a hot water outlet pipe 12 are vertically provided on the tank ceiling surface 7a of the proposed tank.

The partition wall 8 is formed in a cylindrical shape that surrounds the periphery of the overheat detector 3 and has an open lower end, and is formed integrally with the tank ceiling surface 7a. The partition wall 8 extends from the tank ceiling surface 7a to a depth of about 1/3 of the tank depth. This is because when the superheated hot water stays in the portion of the upper part of the tank excluding the cylindrical volume of the partition wall 8, the lower end of the partition wall 8 is positioned deeper than the water level at which the superheated hot water can stay. is there. The accumulated water level of the superheated water depends on the tank capacity, the material and the wall thickness (thermal conductivity) of the partition wall 8, the cylindrical diameter, and the temperature sensing device.
Although it changes depending on factors such as the set temperature of 6a,
Approximately 1/3 of the tank depth is retained.

The hot water outlet pipe 12 is integrally formed so as to pass through the top and bottom of the tank ceiling surface 7a, and its lower end extends to a deep water level portion near the tank bottom portion. At the lower end of the tap pipe 12,
A hot water outlet 2 for supplying hot water to a hot water washing device (not shown) is provided.

By the way, in the present embodiment, the convection obstruction plates 9 and 10 are provided to divide the inside of the tank into three chambers of the upper chamber A, the middle chamber B and the bottom chamber C in the depth direction. The convection obstacle plate 9,10
Is designed to prevent a large amount of hot water heated by the heater 5 from moving in the depth direction as a substantial flow, and a plurality of holes 9a and 10a are formed in each plate surface. The lower end of the partition wall 8 faces the deepest part of the ceiling chamber A, and the tap hole 2 faces the central part of the bottom chamber C. Further, the water supply port portion 4 is made to face the ceiling room A. Therefore, each chamber A, B, C in the tank
Some mutual convection occurs, but most of it is heat exchange through the convection obstruction plates 9 and 10 themselves or each hole 9a, 10a. Therefore, when the tank of the present invention is used, the hot water heated by the heater 5 stays in the ceiling chamber A, is immediately mixed with the supply water in the ceiling chamber A, and is maintained at a temperature slightly higher than the set temperature. Become so. Then, every time the hot water cleaning device is used, the hot water in the ceiling chamber A is sent to the middle chamber B, the hot water in the middle chamber B is sent to the bottom chamber C, and in the ceiling chamber A, a new hot water is added. The feed water will be mixed. Therefore, even when the hot water washing device is continuously used, the temperature of the hot water hardly decreases, and there is no fear of causing discomfort to the user.

Further, in this embodiment, the branch port 4a of the water supply port 4 is made to face the inside of the cylinder of the partition wall 8.

This is for preventing the air contained in the supply water from accumulating in the partition wall 8, and the air is discharged to the outside through the water supply pipe 11.

FIG. 2 is a line graph showing heating conditions using feed water of about 5 ° C. in the tank of the present invention and the conventional hot water tank in comparison. All of the temperature measurement positions were near the overheat detector 3. In the tank of the present invention, an example (illustrated) in which a slight gap is provided between the lower end of the partition wall 8 and the convection obstruction plate 9 is shown by a solid line, and the lower end of the partition wall 8 and the convection obstruction plate 9 are shown. The abutted example (not shown) is shown by a one-dot chain line. Moreover, in the conventional hot water tank, the test was conducted by removing the overheat detector. As shown by the dotted line, in the conventional hot water tank,
60 minutes after about 2 minutes and 9 minutes after starting to heat
It can be seen that the dangerous temperature of ℃ has been exceeded and the overheat detector has been activated. On the other hand, the tank of the present invention never exceeded 60 ° C, and after about 10 minutes, the hot water washing device could be used.

(Examination of Another Mode) The partition wall 8 is formed by using a material having excellent heat conductivity as a material separately from the tank ceiling surface 7a, or by forming a small hole at an appropriate position on the peripheral wall of the partition wall 8. The heat exchange inside and outside the cylinder may be activated. Further, the partition wall 8 is a polygonal tubular shape, or a single wall that crosses between the portion where the overheat detector 3 is provided and the portion immediately above the heater 5 on the tank ceiling surface 7a. Good. Also, the outlet part 2 is
It can be provided on the bottom surface of the tank or the lower surface of the peripheral wall. Further, the overheat detector may be a so-called thermostat, which itself has a circuit disconnecting function. Of course, in the temperature sensing device 6a of the thermostat 6,
The positioning does not matter whether the partition wall 8 is inside or outside, and the presence or absence of the convection obstruction plates 9 and 10 as shown in the above embodiment is not limited. As described above, the configuration and shape of the tank of the present invention can be appropriately changed according to the embodiment.

"Effect of device" As is clear from the above description, according to the hot water tank of the hot water cleaning device according to the present invention, even if the hot water cleaning device is used while the tank water is heated, there is never any burn injury. Can be used safely. Further, there is no possibility that the heater power supply circuit is unnecessarily cut off by the overheat detector. Therefore,
Maintenance by a specialist is almost unnecessary. Furthermore,
Unlike the tanks with easy avoidance measures such as double installation of temperature sensitive equipment, the proposed tank has a great effect by devising the partition structure inside the tank. It has a number of excellent advantages such as no complication regarding circuits and soaring of costs.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a tank of the present invention, FIG. 2 is a line graph comparing heating states of the tank of the present invention and a conventional hot water tank, and FIG. 3 is a front sectional view of a conventional hot water tank,
FIG. 4 is a circuit diagram showing a heater power supply circuit. 2 …… Outlet port, 3 …… Overheat detector 4 …… Water inlet, 5 …… Heater 6 …… Thermostat, 6a …… Sensor 7a …… Tank ceiling, 8 …… Partition wall

Claims (1)

[Scope of utility model registration request] 1. A hot water tank for a hot water washing device having a heater installed therein, and a partition wall for partitioning a water area facing an overheat detector provided on a ceiling surface or an inner surface of a peripheral wall of the tank and a water area directly above the heater. Is vertically installed on the ceiling surface of the tank, and the hot water washing device has a hot water outlet located at substantially the same height as or lower than the lower end of the partition wall. Hot water tank for equipment.