JPH046845B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a hot water reheating device that can also be applied to an upstairs bathtub.

(Prior art) The open-to-atmosphere water heater used in hot water reheating equipment is configured to prevent overflow by controlling ON and OFF by vertical movement of a float. It is applied as a water supply system, and as such, for example, the
It is disclosed in Japanese Patent No. 59-54038.

(Problems to be Solved by the Invention) However, when applied to a hot water supply system in which hot water is supplied to a bathtub or other external area by connecting a heat exchanger for hot water supply to the above-mentioned atmospheric open water heater, the following problems arise. has been pointed out.

In other words, if the bathtub is installed on the floor, the amount of hot water supplied to the bathtub will be small, so in this situation, a certain amount of hot water will be released into the atmosphere, similar to when the bathtub is installed at the same height as the hot water reheating device. If hot water is supplied to an open water heater, it will overflow. In order to prevent such a situation, ON and OFF control is performed repeatedly using a float, but by doing so,
The hot water supply heat exchanger and burner are repeatedly activated and deactivated within a short period of time, causing ignition delays and the like, resulting in instability of the temperature at which hot water is poured into the bathtub.

Therefore, in order to deal with bathtubs provided for upstairs use, it is necessary to use a pump with a particularly large capacity for upstairs use, which unnecessarily leads to an increase in costs.

The present invention was made to solve such problems, and even when a bathtub is installed on the floor, it can be used without using a pump with a large capacity, and even when the amount of hot water supplied to the bathtub is reduced. To provide a hot water reheating device that does not cause any trouble by automatically adjusting the amount of hot water supplied to an air-open water heater according to changes in the amount of hot water supplied.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention connects a hot water supply heat exchanger with an atmosphere open water heater operated by a float via a hot water supply pipe, and also connects a hot water supply heat exchanger to an atmosphere open water heater operated by a float. The device is connected to a reheating system including a pump and a reheating heat exchanger, and the atmosphere open hot water supply device includes an atmosphere open tank, and a cylindrical horizontal valve body in a hot water pipe located above the atmosphere open tank. and a closure rotatably provided within the valve body, a water passage hole communicating with the hot water pipe is provided in the side wall of the closure, and a lever rod is attached to the pivot shaft of the closure. and the tip of the lever rod is pivoted to a connecting arm protruding from the float.

(Function) When the pump is started and hot water is supplied from the atmosphere open water heater to the bathtub, the hot water level in the atmosphere open tank decreases. The float is lowered, the connecting arm is lowered together with the float, the lever bar is displaced in conjunction with the float, and the closure member is rotated about the rotation axis. As the closure rotates, the water flow area of the water passage hole formed in the closure is displaced, and the amount of hot water supplied to the tank open to the atmosphere is automatically adjusted. Therefore, when the amount of hot water supplied is relatively small, the hot water level in the tank open to the atmosphere is balanced at a high level, and a small amount of hot water commensurate with the amount of hot water is supplied via the closure. Therefore, since hot water is supplied continuously, the hot water supply heat exchanger is operated continuously instead of ON/OFF control as in the conventional case, and a stable hot water temperature can be obtained.

On the other hand, when the amount of hot water to be supplied is relatively large, the hot water level in the tank open to the atmosphere is balanced at a low level, and a large amount of hot water corresponding to the amount of hot water is supplied via the closure.

(Example) Hereinafter, detailed description will be given based on the figures corresponding to the example. Reference numeral 1 indicates a bathtub installed on the upper floor, and the upper-floor bathtub 1 and a pump 2 are connected via a hot water pipe 4 via a reheating heat exchanger 3. Further, the bathtub 1 and the pump 2 are connected through a three-way valve 5 through a hot water return pipe 6, and together with the hot water pipe 4, a reheating system 7 is configured.

The three-way valve 5 communicates with an atmosphere open water heater 8, and this atmosphere open water heater 8 is connected to a heat exchanger 9 for hot water supply.
The hot water supply pipe 10 communicates with the hot water supply pipe 10 via the hot water supply pipe 10.

The atmosphere open water heater 8 has an atmosphere open tank 1.
1. It is composed of a cylindrical horizontal valve body 16 in the hot water pipe 10 located above the atmosphere-opening tank 11, and a closure 25 rotatably provided within the valve body 16.

As shown in FIG. 2, a lever bar 26 is protruded from the pivot shaft of the closure 25, and a connecting arm 17 is pivotally attached to the tip of the lever rod 26. A float 12 is connected to. Further, a hot water supply pipe 1 is provided on the side wall of the closure 25.
A water passage hole 23 communicating with 0 is bored.

With this configuration, the atmosphere-open water heater 8 rotates the closing member 25 by interlocking the connecting arm 17 and the lever bar 26 with the upper and lower parts of the float 12, and changes the water passage area of the water passage hole 23 to increase the flow rate. Any configuration may be used as long as the flow rate can be adjusted by moving the float 12 up and down. The three-way valve 5 may have any configuration as long as it has two inlets and one outlet and selects the inlet connected to the outlet.

When an automatic switch (not shown) installed in the bathroom is turned on, the pump 2 starts, the three-way valve 5 switches to the A arrow circuit, and the solenoid valves 13, 1
3' is opened, and at the same time water starts flowing, the water flow sensor 14 starts detecting the flow rate, and the hot water supply water supply switch 15 is turned on to enter a combustion state and heat the hot water heat exchanger 9. The fresh water is heated in the hot water heat exchanger 9, passes through the valve body 16, and is transferred to the atmosphere open tank 11.
From this tank 11, hot water is further supplied into the bathtub 1 via a pump 2. In this case, tank 11
As the hot water level in the tank 11 decreases, the float 12 descends, and the connecting arm 17 and the lever bar 26 work together to rotate the closure 25 and automatically adjust the flow rate into the tank 11. That is, from inside the tank 11 to the upper bathtub 1
The valve body 16 works to replenish the amount of hot water supplied to the tank 11 with hot water from the hot water heat exchanger 9, and automatically adjusts the flow rate into the tank 11.

At this time, the water passage area of the water passage hole 23 in the closure 25 of the valve body 16 is changed by the rotation of the closure 25 due to the lever action of the connecting arm 17 and the lever bar 26, which are linked by the vertical movement of the float 12. Since it can be adjusted, the flow rate can be adjusted over a wide range. Therefore, according to the hot water reheating device according to the present invention, hot water can be supplied from a bathtub at a normal installation height where the water pumping capacity of the pump 2 can be maximized to an upstairs bathtub 1 where the amount of hot water supply is reduced. can be done.

While hot water is being supplied to the upstairs bathtub 1, the hot water supply heat exchanger 9 and burner (not shown) continue to operate,
Since hot water is constantly replenished from the hot water supply heat exchanger 9 into the tank 11, hot water with a stable temperature can be obtained.

Then, the flow rate sensor 14 detects the set flow rate,
That is, when the bathtub 1 reaches a predetermined amount of hot water, the solenoid valve 13
is turned OFF, and the water supply switch 15 is turned OFF.
As a result, combustion on the hot water supply side stops.

Subsequently, the solenoid valve 13' is closed and the three-way valve 5 is switched to the B arrow circuit. Since the pump 2 is in operation, the hot water in the bathtub 1 is circulated through the reheating system 7 by the three-way valve 5. In this case, if the reheating thermistor 18 detects that the temperature of the circulating hot water is lower than the desired temperature, the reheating water switch 21 is activated.
It turns ON and combustion starts to heat the reheating heat exchanger 3. Thus, the hot water in the bathtub 1 can be maintained at a desired temperature. For such reheating, a reheat switch (not shown) is provided separately from the automatic switch, and
The vehicle may also be driven. If you increase the amount of hot water in bathtub 1, turn the automatic switch again.
You can just turn it on, or you can use a hot water tap to supply hot water depending on the situation. In the figure, reference numeral 19 is a hot water supply amount thermistor that detects the outlet temperature of the hot water supply heat exchanger 9 and controls the gas amount to adjust the hot water temperature, 20 is a check valve, and 22 is a wave dissipating plate. .

(Effects of the Invention) As described above, in the atmospheric open water heater according to the present invention, the water passage area of the water passage hole in the closure of the valve body is adjusted by the lever action of the connecting arm and the lever rod that are linked to the vertical movement of the float. I try to do this, so
Flow rate can be adjusted over a wide range. Therefore, the hot water reheating device according to the present invention can be applied not only to bathtubs at a normal installation height where the water pumping capacity of the pump can be maximized, but also to bathtubs on floors above where the amount of hot water supplied is reduced. be able to. Furthermore, since the hot water supply heat exchanger is in operation while hot water is being supplied to the bathtub, the temperature of the hot water supplied to the bathtub remains stable.

In this way, the atmospheric open water heater system is completely free from malfunctions of valves and other equipment due to ON/OFF control, etc., and also has the great advantage of being able to install an upstairs bathtub without using a special upstairs pump. There is.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the entire system, and FIG. 2 is an explanatory diagram of the hot water flow control valve. Code, 1... Bathtub, 2... Pump, 3... Reheating heat exchanger, 4... Hot water pipe, 5... Three-way valve, 6...
Hot water return pipe, 7... Reheating system, 8... Atmospheric open water heater, 9... Hot water supply heat exchanger, 10... Hot water supply pipe, 1
1... Atmosphere open tank, 12... Float, 1
3, 13'... Solenoid valve, 14... Flow rate sensor, 1
5... Water supply switch, 16... Valve body, 1
7... Connection arm, 18... Reheating thermistor,
19...Hot water supply thermistor, 20...Check valve, 2
1... Reheating water switch, 22... Wave dissipating plate, 2
3...water hole, 24...discharge pipe, 25...closer,
26...Pry bar.

Claims (1)

[Claims] 1. A hot water supply heat exchanger is connected to an atmosphere open water heater operated by a float via a hot water pipe, and this atmosphere open water heater is connected to a reheating system equipped with a pump and a reheating heat exchanger. The atmosphere-opening hot water supply device includes an atmosphere-opening tank, a cylindrical horizontal valve body on a hot water supply pipe located above the atmosphere-opening tank, and a closure rotatably provided within the valve body. A water hole communicating with the hot water pipe is provided in the side wall of the closure, and a rotation axis of the closure is provided with a water hole communicating with the hot water pipe.
A hot water reheating device which can also be applied to an upstairs bathtub, characterized in that a lever bar is connected and the tip of the lever bar is pivoted to a connecting arm protruding from the float.