JP2925096B2 - Bath equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a bath apparatus for reducing water hammer when a valve is opened.

[0002]

2. Description of the Related Art A technique for reducing a water hammer at the time of opening a valve by opening an on-off valve for filling after narrowing an opening of a water flow control valve and preventing damage to instruments and pipes is known. Are known.

[0003]

However, there is no problem with this method when only hot water is supplied, but in a hot water supply method in which hot water is supplied by using a hot water supply and another hot water tap, it is likely that another hot water tap is in use. In such a case, when hot water is supplied, the amount of hot water supplied to other hot water taps is greatly reduced (for example, when hot water is used when a shower is used, water cannot be discharged from the shower).

[0004] The present invention has been made to solve such a problem, and an object of the present invention is to provide a bath apparatus in which the use of other hot water taps such as a shower is considered and a water hammer is not generated. It is in.

[0005]

In order to solve the above-mentioned problems, a bath apparatus according to the present invention comprises a water amount sensor for detecting the amount of water in a hot water supply path, and an upstream side from a branch point between another hot water tap side and a hot water filling side. In a bath apparatus provided with a water amount control valve provided in the bath and an open / close valve provided in the hot water flow path, the flow rate of a water amount sensor is monitored prior to opening of the open / close valve, and when the water amount is equal to or larger than a preset water amount, A water flow control means is provided for opening the on-off valve without changing the opening of the water flow control valve, and opening the open / close valve after reducing the opening of the water flow control valve when the water flow is less than a preset water flow.

[0006]

The bath apparatus according to the present invention determines whether or not another hot water tap is used based on the amount of water detected by the water amount sensor, and controls the opening / closing order and opening degree of the on-off valve and the water amount control valve.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram of a bath apparatus according to the present invention, and FIG. 2 is a flowchart for explaining processing operations of a water amount control unit.

The bath apparatus 1 includes an operation unit 2, a water flow control unit 3, a water flow sensor 4, a heat exchanger 5, a water flow control valve 6, and a hot water opening / closing valve 7. The hot water supply pipe 8 has a water amount sensor 4, a heat exchanger 5,
It is connected to a bathtub 9 via a water flow control valve 6 and a hot water filling opening / closing valve 7, and a branch pipe 10 branched from the middle of the water flow control valve 6 and the opening / closing valve 7 is connected to another hot water tap 11 such as a curan 11 a or a shower 11 b. Connect to

When the operation unit 2 is operated and power is supplied from a power supply (not shown), the water amount control unit 3 starts monitoring a signal from the water amount sensor 4 and gives various inputs such as hot water. It is configured to be able to. The water amount control unit 3 includes, for example, an integration circuit 3a that integrates a signal from the water amount sensor 4, a comparison circuit 3c that compares the integrated value with a reference water amount stored in advance in a memory 3b, It can be constituted by a judgment circuit 3d for judging the operation order of the water amount control valve 6 and the hot water filling on-off valve 7 based on the judgment.

As the water amount sensor 4, for example, a water wheel type sensor that detects a water amount by using a reed switch whose contacts are opened and closed by the magnetic force of a magnet provided on the water wheel can be used. The heat exchanger 5 is heated by a burner (not shown), and is configured to change water flowing inside thereof into hot water.

The water flow control valve 6 is, for example, an electromagnetic valve that controls the opening in multiple steps according to the number of pulses to be applied, or that controls the opening in a stepless manner according to the amount of applied power. Anything that can be used can be used.

As the on-off valve 7, for example, an electromagnetic valve which is opened when a predetermined voltage is applied is used. It should be noted that a valve having a structure in which the valve is driven to open and close by an actuator using a piezoelectric element may be used in addition to the electromagnetic switch using an electromagnetic solenoid or the like.

FIG. 2 shows the operation of the bath apparatus constructed as described above.
It will be described based on FIG. In FIG. 2, S1, S2,
S3 and S4 show each step of the processing operation.

When the operation unit 2 is operated and there is a hot water filling input, the integrating circuit 3a which receives the signal based on the water amount from the water amount sensor 4 integrates the hot water supply amount from the input signal and stores the integrated value in the memory 3b in advance. The stored reference water volume (6 liters / minute in this embodiment) is compared with the comparison circuit 3c (step 1), and the comparison result is output to the judgment circuit 3d. When the determination circuit 3d determines that the integrated value is equal to or larger than the reference water amount, the opening / closing valve 7 is immediately driven to open (step 3). When the integration value is smaller than the reference water amount, the opening of the water amount adjustment valve 6 is first reduced (step 3). 2) Open / close the on-off valve 7 (step 3), and then increase the opening of the water flow control valve 6 (step 4).

The reference water amount is not limited to 6 liters / minute as in this embodiment, but may be 6 to 8 liters / minute.

In other words, the water amount control unit 3 uses another hot water tap such as a shower prior to hot water supply (when the opening of the water amount control valve 6 is large) and supplies hot water of a predetermined amount or more to the branch pipe. When the hot water is supplied to the hot water supply 10, the opening / closing valve is immediately opened to start hot water supply, and then the opening of the water flow control valve 6 is controlled in accordance with the use condition. When the amount is less than the reference water amount,
At first, the opening of the water flow control valve 6 is narrowed, and the opening / closing valve is opened. Then, the opening of the water flow control valve 6 is gradually increased to control the filling.

[0017]

With the above configuration, the bath apparatus according to the present invention has the following effects. That is, when another hot water tap is used, the on-off valve is opened immediately, so that the hot water supply amount of the other hot water tap is greatly reduced, so that the spout is not stopped, and the hot water is branched off from the other hot water tap. The water hammer can be prevented since high water pressure is not applied to the on-off valve. Further, when no other hot water tap is used, the opening and closing of the water amount control valve is reduced and then the opening and closing valve is opened. Therefore, high water pressure is not applied to the opening and closing valve, and water hammer can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram of a bath apparatus according to the present invention.

FIG. 2 is a flowchart for explaining a processing operation of a water amount control unit;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bath apparatus, 2 ... Operation part, 3 ... Water amount control part, 3a ... Integration circuit, 3b ... Memory, 3c ... Comparison circuit, 4 ... Water amount sensor, 5 ... Heat exchanger, 6 ... Water amount control valve, 7 ... Hot water Tension opening / closing valve, 8 hot water supply pipe, 9 bathtub, 10 branch pipe, 11 hot water tap, 11a Karan, 11b shower.

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Toshiharu Oe 43-1, Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo Prefecture Inside Japan Yupro Corporation (72) Inventor Shinji Miura 43-1, Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo Inside Nippon Yupro Co., Ltd. (72) Inventor Kimihiko Koita 43-1, Uozakihama-cho, Higashinada-ku, Kobe City, Hyogo Prefecture Inside Nippon Yupro Co., Ltd. (56) References JP-A-3-260548 (JP, A) JP-A-2 −52947 (JP, A) Fully open 1986-69765 (JP, U) (58) Fields investigated (Int.Cl. ⁶ , DB name) F24H 9/00 F24H 1/00-1/00 606 F24H 1 / 10-1/10 303

Claims (1)

(57) [Claims] 1. A water amount sensor for detecting a water amount in a hot water supply path, a water amount adjustment valve provided upstream of a branch point between another hot water tap side and a hot water filling side, and an on-off valve provided in a hot water supply passage. In this bath apparatus, the bath apparatus monitors the flow rate of a water amount sensor prior to opening of the on-off valve, and when the amount of water is equal to or more than a preset water amount, the on-off valve without changing the opening of the water amount adjustment valve. And a water amount control means for opening the on-off valve after reducing the opening of the water amount adjusting valve when the water amount is less than a predetermined amount.