JPS58187741A - 1-can 2-circuit type hot water supply bathtub - Google Patents

Abstract

PURPOSE:To automate additional combustion, hot water supply and water supply by providing a controller which circulates and heats water in a bathtub at the set temperature, a priority circuit which supplies hot water by inhibiting the circulating and heating and an automatic water stopping unit which closes hot air passage by detecting the set water level. CONSTITUTION:In case that a bath is circulated and heated, when the additional combustion switch 28 of an additional combustion operating unit 27 is closed, a control circuit 44 is energized, a gas burner 7 is burned, and water is circulated and heated until a switch 42 is opened by a temperature detector 23. In case that the hot water is then supplied, when a hot water plug 21 is opened, a water switch 13 is closed, burning air is supplied by a blower 36 to a combustion chamber 6, a signal is transmitted to a priority circuit 43, the circuit 44 is energized to heat the water, and the circulating and heating are inhibited. In order to then perform an automatic combustion of the bath, the additional combustion switch 28 is closed and the plug 21 is opened. Then, hot water is supplied to a bathtub 20. When the water level becomes the set level, an automatic water stopping unit A is operated to release the hot water preferential supply means, a pump 25 is operated, and the water in the bathtub is circulated.

Description

[Detailed Description of the Invention] The present invention relates to a one-can, two-circuit type hot water bath pot, more specifically, the bathtub water is heated by forced circulation between the heat exchanger for reheating and the bathtub using a pump, and the hot water is reheated. The purpose of this hot water bath kettle is to provide hot water by passing water through the hot water heat exchanger that is integrated with the hot water heat exchanger. To provide an easy-to-use hot water bath pot having versatile functions such as automatic bath heating to supply water up to a water level and heat the bath to a set temperature.

Conventionally, there is a one-can, two-circuit hot water bath boiler that supplies hot water to a set water level in a bathtub, and when the water level reaches the set level, it circulates and heats the bathtub for a set time. However, in this conventional example, it is not possible to control the temperature of the bath water to a set temperature, and when reheating or heating hot water, it is necessary to switch the operating device to the specified operation mode each time, making it difficult to use. It was a selfish thing to do.

The present invention is intended to solve the drawbacks of the conventional example, and will be specifically explained below based on an embodiment shown in the drawings.

(1) C shows a 1-can 2-circuit hot water bath pot, with fins (2
) is shared with hot water heat exchanger (8) and hot water heat exchanger N
(4) and a combustion chamber (6) having a can body (5) integrally provided thereon, a common gas burner (7) disposed in the combustion chamber (6), and a control device (8). . (9) is a water governor installed in the water supply channel αQ of the hot water heat exchanger (3), and the contact point is switched when water flows through the water governor (2) attached to the diaphragm 0η of the water governor (9). A switch Q3 is provided, and the presence or absence of water flowing to the hot water supply heat exchanger (3) is detected by the diaphragm αυ, the rod (6), and the water switch a3.

α fathom is a fuel control section consisting of a gas proportional valve QFj and the like.

The 0 phrase is the igniter, and Oη is the flame detector. (g) is a water supply heat exchanger (a water stop valve installed in the hot water supply path (19a) leading to the bathtub (7) from the hot water supply path a), Qυ is a hot water supply installed in the hot water usage area such as the kitchen. The stopper (2) is a circulation path that connects the bathtub canopy and the reheating heat exchanger (4);
2) is equipped with a temperature sensor (E), a water switch (C), and a pump (2) in order from the four sides of the bathtub.
A water level detector (E) is installed to detect the water level. In addition, the automatic water stop device (
When the water level in the bathtub (E) reaches the set level, the water stop valve (
g) to close the /9 hot water supply path (h=Iha) to the bathtub (7). In addition, this automatic water stop device is not the same as the one in the example, and even if the two are mechanically linked, the electrical connection (a) is the reheating operation device installed in the bathroom, and the reheating switch is connected. (g), a setting device (4) for varying the reheating temperature, and a setting device (7) for varying the hot water temperature.

3D is an operating device that is installed in the hot water area outside the bathroom, such as the kitchen, and includes a power switch (to), a buzzer that notifies you when the bathtub temperature reaches the set temperature using a setting device, and a setting device that changes the hot water temperature. , a setting device (to), and a priority switch (to)' which switches either one of the two and connects it to the control device (8). (to) is the blower.

Next, an example of the electric circuit of the main part of the control device (8) is shown.
There is a reheating switch ＼ on the power line, and the reheating switch (
Connect a bypass circuit (b) with a water switch Q in parallel with this switch to the line before c), and connect a relay for driving the blower (g) between the power lines after the reheating switch. ) and connect the above bypass circuit (b).
It is designed so that electricity can be applied from both sides. (To) is a relay for driving the pump (C) connected in series with the transistor, and the signal to the transistor Moe is sent from the power line after the reheating switch (E) to the circuit (4υ). This circuit (4υ includes the temperature detector (E)
The control circuit (441) is a priority circuit installed in front of the circuit, and consists of a PNP transistor (45) connected in series to the power supply line, and a Darlington-connected transistor circuit in which the base of the transistor (49) is connected to the output circuit. (4
0, the input circuit of the transistor circuit (effect) and the bypass path are connected by a circuit, and the output circuit is connected to the circuit 0υ through a diode (connected to the relay). ) is provided to bypass the transistor package e of the priority circuit (43), and this circuit (49) is provided.
A switch (c) is interposed at α, which is closed by the operation of the pump (2). To explain the operation of the above configuration, to perform circulating heating of the bath, turn on the power switch (to) of the operating device CI, then turn on the reheating switch (c) of the reheating operation device ■ to reheat the bath. All you have to do is operate. By turning on this additional firing switch (E), the relay (To) is activated and combustion air is supplied to the combustion chamber (6), and at the same time, a signal is sent to the transistor by the circuit (4υ), which makes the transistor conductive and the relay ( ) is activated, and the pump (c) is energized. When the pump (a) is activated and the bathtub water is circulated in the circulation path (a), the water switch (c) is closed and the circuit (4) is activated.
9, the control circuit Q41 is energized and the gas burner (
7) is combusted, the temperature detector @ detects the set temperature, and circulating heating is performed until the switch (42) is opened.The next time you want to supply hot water, just open the hot water tap e℃, and the hot water supply starts. When the tap Qυ is opened, the water switch (to) is closed, and the relay (to) is energized from the bypass circuit (9), which turns on the blower (to).
Combustion air is supplied to the combustion chamber (6) by a). In addition, when the water switch So is closed, a signal is sent from the circuit 0η to the priority circuit (double transistor circuit (46), which makes the transistor circuit (46) conductive, and therefore, the transistor (451) becomes conductive, and the control circuit (4 (I) ) is energized and hot water is heated.

Now, when hot water is supplied while the bath is being reheated, the reheating switch (to) is closed during reheating, the relays (to) and (to) are activated, and the water switch (c) is closed. Control circuit (441
is being energized. Water switch α4 due to the above hot water supply
When closed, hot water is heated as described above, but due to the conduction of the transistor circuit, the circuit (the conduction current of the transistor from 4υ is bypassed to the transistor) is cut off, and the relay ( ) stops operating, and therefore the pump (a) stops.That is, during hot water supply, the pump (b) stops and the bathtub water is not circulated, and circulating heating is prohibited during that time.

Next, to automatically heat the bath, turn on the reheat switch (E) and connect the hot water tap installed at the end of the hot water supply path (19a) of the rear bathtub (7). Just open the υ. Then, as mentioned above, hot water is given priority and hot water is supplied to the bathtub (4), and when the bathtub water level reaches the set water level, the automatic water supply system is activated, that is, the water level detector (E) activates the water stop valve (T). ) to close the hot water supply path (19a) to the bathtub canopy. As a result water switch □
□□ opens to circulate the bath water, and if the temperature of the bath water is below the set temperature, circulation heating continues to heat the bath water to the set temperature.

As described above, the present invention provides a one-can, two-circuit type hot water bath pot that includes a reheating heat exchanger that forms a circulation path with the bathtub via a hot water supply heat exchanger and a pump, and a common gas burner. Activated by reheating operation, the bathtub water is circulated and heated to the set temperature.The control device detects the flow of water to the hot water heat exchanger.It detects the set water flow rate and closes the hot water supply path to the bathtub.It automatically shuts off. Since a water device is provided, the hot water bath boiler of the present invention can arbitrarily switch between additional heating, hot water supply, and automatic bath heating that supplies hot water up to the set water level in the bathtub and heats it to the set temperature. Switching from heating to hot water can be done by opening the hot water faucet without canceling the reheating operation, and the same is true for switching to automatic bath heating, which is extremely convenient as there is no need to switch to a predetermined operation mode like in the past. It is easy to operate and easy to use.

Moreover, when hot water is supplied during reheating, reheating is automatically restarted after hot water supply is stopped, making it easy to use. Furthermore, since circulation heating is performed by a pump, there are no restrictions on the height or distance of the installation location of the bathtub, resulting in good workability.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, and FIG. 2 is an embodiment of an electric circuit of a control device. (3) Heat exchanger for hot water supply (4) Heat exchanger for reheating (7) Gas burner (7) Bathtub (c) Pump (431 Hot water supply Priority circuit (N... automatic water stop device

Claims (1)

[Claims] 1 can 2 with a hot water heat exchanger and a shared gas burner and a reheating heat exchanger that forms a bathtub and circulation path via a hot water supply heat exchanger and a pump.
In a circuit type hot water bath boiler, a control device that is activated by the reheating operation to circulate and heat the bath water to a set temperature, and a hot water supply priority system that detects the flow of water to the hot water heat exchanger and prohibits the above circulation heating to supply hot water. A one-can, two-circuit hot water bath pot characterized by being equipped with a circuit and an automatic water stop device that detects the set water level of the bathtub or the set amount of water flowing into the bathtub and closes the hot water supply path to the bathtub.