JPH03260548A - Filling equipment for hot water - Google Patents

Abstract

PURPOSE:To prevent generation of a water hammer sound on the basis of a closing operation of a hot water filling valve by providing a hot water filling circuit having the hot water filling valve, and a hot water filling sensor delivering a hot water filling completion signal when hot water in a set quantity is filled in a bathtub. CONSTITUTION:When a water level in a bathtub 1 reaches a target water level by a hot water filling operation, a signal is outputted from a hot water filling sensor 64, a flow regulating device 62 conducts a restricting operation on the basis of the signal, and thereby a flow rate in a hot water filling circuit 6 is reduced gradually. After the flow regulating device 62 approaches a most restricted state substantially, a hot water filling valve 63 is made to execute a closing operation and thereby the hot water filling operation is completed. Since the hot water filling valve 63 is closed after a water flow in the hot water filling circuit 6 is restricted and then the hot water filling operation is stopped, no water hammer sound is generated.

Description

[Detailed Description of the Invention] [A Field of Application and Summary of the Invention] The present invention relates to a hot water filling device, which prevents the sound of a water tank generated when the hot water filling valve is closed when filling is completed. .

[Prior Art and Problems] For example, there is a hot water filling device shown in FIG. 1 that has an automatic hot water filling function that stops the hot water filling operation when the water level in the bathtub reaches a target water level.

The hot water filling circuit (6) connecting the bathtub (1) and the heat exchanger (2) includes a hot water temperature sensor (61) and a flow rate adjustment device (62), which will be described later.
), a hot water filling valve (63), and a hot water filling sensor (64) such as a water pressure gauge that outputs a signal when a set amount of hot water is filled in the bathtub.
) are arranged in this order from the upstream side, and each of these parts is electrically connected to the control circuit (5). In addition, a gas circuit (
70) has a gas proportional valve (71) inserted therein.

The flow rate adjustment device (62) inserted into the hot water filling circuit (6)
) is intended to ensure that hot water at a desired temperature can be obtained even when the temperature of the water supplied to the heat exchanger (2) is extremely low during low water temperatures such as in winter. That is, the heat exchanger (2
) is extremely low, and the water temperature setting device (4) is set even though the appliance is in a combustion state that exceeds its maximum combustion capacity (the gas proportional valve (71) is fully open). If the actual outflow water temperature detected by the hot water temperature sensor (61) is lower than the hot water temperature, the temperature setting device (4) and the hot water temperature sensor (61)
) The hot water filling circuit (6) is throttled until the outputs of the two are equalized. Incidentally, as the flow rate adjusting device (62), for example, as shown in Figure 'tS6, a motor (66) is used.
A configuration can be adopted in which the valve body (67) is brought into contact with and separated from the valve seat (68) by the rotation of the valve body to control the flow rate of the hot water filling circuit (6).

In the above-mentioned infinite regular adjustment device (62), the hot water filling switch (4
1), the hot water filling valve (63) opens and the gas burner (7) burns, starting the hot water filling operation and filling the bathtub (1).
) When the set amount of hot water is filled in the tank, the hot water filling sensor (
64) is detected and the hot water filling valve (63) is closed, thereby completing the hot water filling operation.

However, in the conventional method described above, when the hot water filling valve (63) is closed to stop the hot water filling operation, the hot water filling valve (63) is closed.
63) causes the water flow in the f% tension circuit (6) to suddenly stop, causing a problem in that water hammer noise is generated.

(Regarding the invention of claim 1) The invention of claim 1 was made in view of the above points,
r A hot water filling circuit (6) connected from the heat exchanger (2) to the bath ai (1) and equipped with a hot water filling valve (63), and a bathtub (1).
), the hot water filling device 1 is equipped with a hot water filling sensor (64) that outputs a hot water filling completion signal when a set amount of hot water is filled in the hot water filling device 1. The objective is to prevent the occurrence of aquatic grass noise.

[Means] The above iI! l! The technical means of the present invention of claim 1 for solving the problem is to provide a flow rate regulating device (62) that is inserted into the hot water filling circuit (6) and performs a throttling operation, so that a set amount of water is poured into the bathtub (1). Hot water filling sensor (64) that occurs when hot water is filled
In response to the filling completion signal, the flow rate regulating device (62) is throttled, and the hot water filling valve (63) is closed after the flow rate regulating device (62) reaches a substantially maximum throttle state.

[Effect] The above technical means works as follows.

When the water level in the bathtub (1) reaches m1 after performing the hot water filling operation, a signal is output from the hot water filling sensor (64) in the same way as in the conventional ones, and this signal causes the flow rate adjustment device (62
) performs a throttling operation, and the flow rate in the hot water filling circuit (6) gradually decreases. Then, when the flow rate adjustment device (62) approaches the substantially maximum throttle state, the hot water filling valve (63) is then operated to close, thereby completing the hot water filling operation.

[Effect Co. The present invention according to claim 1 has the following unique effects.

After restricting the water flow in the hot water filling circuit (6), open the hot water filling valve (63).
) is closed to stop the water filling operation, so there is no water hammer sound.

[Example] Next, an example corresponding to the invention of claim 1 described above will be described with reference to the drawings.

The hot water filling circuit (6) that connects the bathtub (1) and the heat exchanger (2) and the gas circuit (70) to the gas burner (7) are constructed almost the same as those in Fig. 1 described above. Tension circuit (6
) is inserted into the flow rate regulator (62), as shown in Fig. 2, when the valve body (67) of the flow rate regulator (62) closes the valve seat (68), an ONi signal is output. A limit switch (corresponding to the aperture state detection means described in the above technical means) (55) is provided, and the output of the limit switch (55) is connected to a control circuit (5) composed of a microcomputer, etc. is applied to.

A control program as shown in the flowchart of FIG. 3 is written in the microcomputer constituting the control circuit, and the actual operation of the hot water filling apparatus of this embodiment will be explained according to the flowchart shown in FIG.

First, when the hot water filling switch (41) is turned on, the flow regulating device (62) is fully opened, and then the gas burner (7) is combusted and the hot water filling valve (6
3) Open to start filling operation. During this hot water filling operation, the flow rate adjustment device (62) is controlled, and at low temperatures such as in winter, the amount of hot water flowing out from the heat exchanger (2) is throttled and set in the hot water temperature setting device (4). Hot water at the desired temperature for bathing can be taken out from the heat exchanger (2) (see drawing numbers (80) to (82)).

When the hot water filling operation continues and the water level in the bathtub (1) reaches the target water level suitable for bathing and the hot water filling sensor (64) outputs a signal (see step number (83) in the drawing), the gas burner (7)
) is extinguished and the motor (
66) in the normal direction to gradually throttle the water supplied to the bathtub (1) (see step number (84) in the drawing), and finally, the valve body (67) of the flow rate regulating device (62) touches the valve seat. (68
) is closed to block the flow path. This eliminates the fear that the hot water filling circuit (6) will be suddenly cut off and the front of the water turbine will occur.

Further, when the flow rate adjustment device (62) completely blocks the flow path, the collar (56) of the flow rate adjustment device (62) comes into contact with the limit switch (55), and the limit switch (55)
5) issues a stop signal, and the stop signal causes the motor (6
6) is stopped.

Then, the hot water filling valve (63) is closed to complete the hot water filling operation.

In addition, in the above embodiment, the valve body (6
7) was designed to close the hot water filling valve (63) after the valve seat (68) was closed and the flow path was blocked, but the valve body (67)
The hot water filling valve (63) may be closed when the water approaches the valve seat (68) and the flow rate in the flow path becomes sufficiently low.

Furthermore, in the above embodiment, the water filling valve (63) is closed by the output of the limit switch (55), but the motor (66) may be a servo motor and the number of pulses applied to the motor may be counted. The hot water filling valve (63) may be closed when the counted value becomes constant. Further, a timer may be provided that outputs a signal when the flow rate regulating device (62) reaches the substantially maximum throttle state after it operates, and the water filling valve (63) may be closed by the output of the timer.

Furthermore, in the above embodiment, hot water boiled in the heat exchanger (2) is directly supplied to the bathtub (1), but a cold water circuit such as a water pipe is connected to the hot water filling circuit (6) to perform heat exchange. Vessel (2)
The present invention can be applied to a so-called bypass kissing type hot water filling device that mixes cold water supplied from the cold water circuit with hot water boiled at, for example, 80°C and fills the bathtub (1) with the mixed water. Needless to say.

(Regarding the invention of claim 2) The invention of claim 2 is characterized in that it includes “a hot water filling valve (63) and a flow rate adjustment device (
In the hot water filling device 1 in which the hot water supply circuit (32) is branched from the flow path between 62) and 62), the same problem as the invention of claim 1 described above is solved.

``Means'' The technical means of the invention of claim 2 taken to solve the above problem is to arrange a water flow switch (34) in the r hot water supply circuit (32), and to set the OFF signal of the water flow switch (34) to the hot water supply circuit (32). One feature is that the flow rate adjustment device (62) is throttled by the AND signal of the filling completion signal from the tension sensor (64).

[Operation/Effect] According to the above technical means, when the water level in the bathtub reaches the target water level and the hot water supply circuit (32) is not operating hot water and the water flow switch (34) is outputting an OFF signal, The flow regulating device (62) performs a throttling operation based on the AND signal of the water filling completion signal of the water filling sensor (64) and the OFF signal of the water flow switch (34), and then closes the water filling valve (63). The filling operation is completed.Thereby, water hammer can be prevented as in the invention of claim 1.

On the other hand, when the water level in the bathtub (1) reaches the target water level, the hot water supply circuit (32) is operating the water supply circuit (32) and the water flow switch (34) is activated.
is not outputting an OFF signal, the hot water filling sensor (
64) hot water filling completion signal and water flow switch (34) ON
Since the AND condition of the F signal is not satisfied, the flow rate adjustment device (62) cannot be operated to throttle. Thereafter, the hot water filling valve (63) is closed as in the invention of claim 1 stated above,
This allows continued use of hot water in the hot water supply circuit (32).

[Example] Next, the above-described example of the present invention will be described in detail with reference to the drawings.

In the embodiment shown in FIG. 4, a hot water supply circuit (32) branches from a flow path between a flow rate adjustment device (62) and a hot water filling valve (63), and the hot water supply circuit (32) includes: The faucets (33) and (33) in the kitchen and washroom are connected.

The hot water filling circuit (6) connecting the bathtub (1) and the heat exchanger (2) and the gas circuit (70) to the gas burner (7) are constructed in the same manner as in the first embodiment. At the same time,
In this embodiment, the hot water supply circuit poison motherboard (32) branches from the flow path between the flow rate adjustment device (62) and the hot water filling valve (63), and the hot water supply circuit (32) is connected to the kitchen. and washroom faucets (33) and (33) are connected to the pipes.

In this embodiment, the operation is controlled according to a control program as shown in FIG. When the kitchen faucet (33) is opened, it is determined whether the water flow switch (34) is outputting an ON signal (see step number (91) in the drawing), and the water flow switch (34) is turned off. In some cases (when hot water is not being used in other places such as the kitchen), the hot water filling operation is completed without preventing water hammer in the same manner as in the invention of claim 1 described above.

On the other hand, when a signal is output from the hot water filling sensor (64), the water flow switch (34) outputs an ON signal and the hot water supply circuit (32)
If it is determined that hot water is being used in
Immediately close the valve and stop the hot water filling operation.

In addition, in the above embodiment as well, the valve body (67) of the flow rate regulating device (62)
The hot water filling valve (63) may be closed when the water approaches the valve seat (68) and the flow rate in the flow path becomes sufficiently low.

Alternatively, the motor (66) may be a servo motor, and the number of pulses applied to the motor may be counted to close the hot water filling valve (63). The hot water filling valve (63) may be closed using the output of a timer that measures the elapsed time.

Further, similar to the embodiment corresponding to the invention of claim 1, the cold water supplied from the cold water circuit is mixed with hot water of, for example, 80°C boiled in the heat exchanger (2), and the mixed water is poured into the bathtub (1). It goes without saying that the present invention can be applied to a so-called bypass mixing type hot water filling device that fills hot water into the water.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the entire circuit of a hot water filling device according to the invention of claim 1, and FIG. 2 is a structural diagram of a flow rate regulating device (62) used in an embodiment of the invention of claims 1 and 2. FIG. 3 is a flowchart showing the operation of the first embodiment;
The figure is a circuit configuration diagram of an embodiment of the invention of claim 2, FIG. 5 is a flowchart explaining the operation of the embodiment of the invention of claim 2, and FIG. 62), in which (1) ... bathtub (62) ... flow rate adjustment device (64) ... hot water filling sensor

Claims (1)

[Scope of Claims] [1] A hot water filling circuit (6) connected from the heat exchanger (2) to the bathtub (1) and equipped with a hot water filling valve (63);
1) In a hot water filling device equipped with a hot water filling sensor (64) that issues a hot water filling completion signal when a set amount of hot water is filled, the flow rate adjustment device is inserted into the hot water filling circuit (6) and performs a throttling operation. A device (62) is provided, and the flow rate adjusting device (62) is throttled by the hot water filling completion signal from the hot water filling sensor (64) generated when the bathtub (1) is filled with a set amount of hot water, and the flow rate adjustment device (62) is throttled. A hot water filling device that closes a hot water filling valve (63) after an adjustment device (62) reaches a substantially maximum throttle state. [2] A hot water supply circuit (32) is branched from the flow path between the hot water filling valve (63) and the flow rate adjustment device (62), and a water flow switch (34) is disposed in the hot water supply circuit (32). OFF signal of water flow switch (34) and hot water filling sensor (64)
The flow rate adjustment device (
62) The hot water filling device according to claim 1, wherein the water filling device 62) is adapted to perform a throttling operation.