JPH0762563B2 - Automatic bath equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to an automatic bath device for automatically dropping into a bathtub.

(Prior art) Conventionally, the water heater was automatically dropped into the bathtub,
For an automatic bath device that stops dropping when the bath is full, Japanese Patent Application No. 59-169937 (Japanese Utility Model Publication No. 61-84461)
The water level detector as shown in Fig. 2 was installed in the bath to detect the water level in the bath.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional automatic bath device, it is necessary to construct the signal line of the water level detector, and there is a risk of water leakage, which is troublesome to construct. The problem was that it was annoying.

An object of the present invention is to provide an automatic bath apparatus that can be easily constructed and can accurately detect the water level.

(Means for Solving the Problem) In order to achieve the above object, an automatic bath device of the present invention includes a bath device connected to a bathtub by a reheating circulation pipe, and a circulation pump installed in the reheating circulation pipe. An automatic bath device that has an automatic drop through the additional heating circulation pipe, has a water pressure detector and a water flow switch in communication with the additional heating circulation pipe outside the bathroom, and drops into the bathtub. Sometimes
In the case of air purging of the additional heating circulation pipe before water pressure detection, the circulation pump is operated to detect the presence or absence of running water, and if running water is present, the water level is detected after air purging in the circulation pipe by the circulation pump operation and no running water is detected. In this case, the water level is detected after air purging in the circulation pipe by dropping.

(Operation) In the automatic bath apparatus of the present invention configured as described above, at the start of dropping into the bathtub, the circulation pump that first communicates with the reheating circulation pipe provided with the water pressure detector and the water flow switch is started. Then, the presence or absence of running water is detected by the water flow switch, and when running water is circulated, the bath water is circulated to perform air purging inside the additional heating circulation pipe. Because the air is purged through the reheating circulation pipe, the inside of the reheating circulation pipe is filled with water and the air is surely discharged, and the water pressure detector communicating with the reheating circulation pipe is affected by air spillage. It detects the exact water level without receiving the water, and achieves the water level desired by the bather with high accuracy.

(Example) The Example of this invention is described based on drawing.

Referring to FIG. 1, the first embodiment will be described. The instrument body 1
A water heater 2 and a bath device 3 are arranged inside. A bath hot water supply pipe 5 is branched from a hot water supply pipe 7 of the hot water supply device 2, and a drop valve 6 is installed in the bath hot water supply pipe 5. The bathtub 4 located at a position remote from the main body 1 is connected to the bath device 3 by a reheating circulation pipe composed of a forward pipe 8 and a return pipe 9, and the return pipe 9 is connected to the bath device 3 via a circulation pump 10. There is.

A pressure sensor 11 as a water pressure detector is provided on the return pipe 9 in the main body 1.
Is provided to detect the water level difference from the water level of the bathtub and to detect the water level, and the water flow switch 17 is arranged to detect the presence or absence of the water flow in the return pipe 9.

A three-way valve 12 is connected to the suction side of the circulation pump 10,
One is connected to the return pipe 9 and the other is connected to the hopper 13.
The hopper 13 is open to the atmosphere and cuts the hot water from the bath hot water supply pipe 5. By switching the three-way valve 12, hot water can be dropped from the outflow pipe 8 into the bathtub 4.

A bypass pipe 14 that connects the outward pipe 8 and the return pipe 9 downstream of the pressure sensor 11 is provided, and a bypass valve 15 is installed in the bypass pipe 14. Further, an electromagnetic valve 16 is arranged in the outward pipe 8 downstream of the connecting portion of the bypass pipe 14.

The operation will be described with reference to FIG. First, when an automatic operation switch (not shown) is turned on (step 1), the bypass valve 15 is closed, the solenoid valve 16 is opened, the three-way valve 12 is on the return pipe 9 side, and the circulation pump 10 is operated ( Step 2).

If the water flow switch 17 is turned on when the circulation pump 10 is operated for a predetermined time set in advance (step 3), it is determined that there is running water, and the circulation pump 10 is stopped (step 4). In the case where running water is present, the circulation pump 10 is operated and the bath water flows into the return pipe 9 provided with the pressure sensor 11 to sufficiently fill the water, whereby the air purge in the return pipe 9 is performed. . Next, the water pressure signal from the pressure sensor 11, that is, the water level signal is sampled (step 5),
It is judged whether or not the sampled water level is equal to or higher than the set water level (step 6), and when the water level does not reach the set water level,
The three-way valve 12 is switched to the hopper 13 side, and the drop valve 6
Is opened, the circulation pump 10 is operated, and hot water from the bath hot water supply pipe 5 is supplied from the outgoing pipe 8 to the bathtub 4 until the set water level is reached (step 7). Then, when the set water level is reached, the drop valve 6 is closed, the circulation pump 10 is stopped, and the drop operation is terminated (step 10).

If the water flow switch 17 is off (step 3), it is determined that no water is flowing, the drop valve 6 is opened to supply hot water to the hopper 13, and the three-way valve 12 is switched to the hopper 13 side. Furthermore, the bypass valve 15 is opened and the solenoid valve 16 is closed,
The circulation pump 10 is operated to supply hot water into the return pipe 9 and air purge is performed (step 8).

When the air purge is completed after a predetermined time, the circulation pump 10 is stopped (step 9), the bypass valve 15 is closed, and the solenoid valve 16 is opened to drop the gas from the outgoing pipe 8 into the bath 4 (step 7). While being done from pipe 8 to bathtub 4,
The water pressure signal, that is, the water level signal from the pressure sensor 11 of the return pipe 9 is sampled (step 5), and when the set water level is reached (step 6), the drop valve 6 is closed to end the drop operation (step 10).

With this configuration, when starting the drop-in operation, before the pressure sensor 11 outputs the first detection signal, the inside of the return pipe 9 provided with the pressure sensor 11 is air-purged to fill water or hot water. The sensor 11 is capable of performing accurate pressure detection immediately after starting the drop operation.

Next, a second embodiment shown in FIG. 2 will be described. This is to perform air purging by hot water supply water pressure, and the same reference numerals as those in FIG.

An air purge pipe 18 is connected from the bath hot water supply pipe 5 to the return pipe 9,
The air purge pipe 18 has a vacuum breaker 19 and a check valve 2
A solenoid valve 21 is provided, and a water amount control valve 22 is provided in the bath hot water supply pipe 5 upstream of the branch point of the air purge pipe 18.

The operation will be described with reference to FIG. First, when the automatic operation switch is turned on (step 1), as in the first embodiment, the three-way valve 12 becomes the return pipe 9 side, the circulation pump 10 is operated (step 2), and the water flow switch 17 is turned on for a predetermined time. If it is turned on (step 3), it is determined that there is running water, and the circulation pump 10 is stopped (step 4). After that, the water pressure signal from the pressure sensor 11 of the return pipe 9, that is, the water level signal is sampled (step 5). When there is running water and the water level is below the set level (step 6), the three-way valve 12 is switched to the hopper 13 side,
While supplying hot water to the bathtub 4 from the outward pipe 8 (step 7), the return pipe 9
The water pressure signal, that is, the water level signal is sampled from the pressure sensor 11 (step 5), and when the set water level is reached (step 6), the drop valve 6 is closed to end the drop operation (step 8).

When there is no running water (step 3), the circulation pump 10 is stopped (step 9), the solenoid valve 21 is opened, hot water is supplied from the air purge pipe 18 to the return pipe 9 provided with the pressure sensor 11, and the return pipe 9
Air purge inside (step 10). At this time, the flow rate of the air purge from the air purge pipe 18 to the return pipe 9 is set so that the water pressure signal is sufficiently output and is kept constant by the water amount control valve 22.

After the air purging, the solenoid valve 21 is closed, and only the outflow pipe 8 is dropped (step 7), the water pressure signal from the pressure sensor 11, that is, the water level signal is sampled (step 5), and the drop valve 6 is turned on when the set water level is reached. The operation is closed to end the drop operation (step 8).

According to this configuration, the air purge flow rate can be kept constant, so that the air purge capacity is stable and there is no risk of biting the air when the circulation pump is turned on or off.

(Effects of the Invention) Since the present invention is configured as described above, it has the effects described below.

When starting the drop-in operation, before the water pressure detector outputs the first detection signal, air purging in the reheating circulation pipe provided with the water pressure detector is performed, and the reheating circulation pipe is filled with water or hot water, The water pressure detector is capable of accurately detecting the water pressure immediately after the start of the drop operation without being affected by air spills and accurately realizing the water level desired by the bather.

Then, no matter how the additional heating circulation pipe is arranged, the air is surely released when detecting the water pressure, so that the water pressure can be accurately detected and the water level desired by the bather can be accurately realized.

Therefore, the mounting position of the water pressure detector can be freely selected,
It can be installed in any position of the reheating circulation pipe outside the bathroom, and it can be installed in the most convenient place for construction, and the degree of freedom of construction is improved.

Also, if there is running water in the additional heating circulation pipe that communicates with the water pressure detector due to the operation of the circulation pump, the return pipe is air-purged, so accurate sampling of the water level signal is performed before dropping hot water to change the water level. Can be done without.
This prevents the water level from exceeding the set water level when air purging by dropping is performed when the hot water in the bathtub has reached the set water level.

[Brief description of drawings]

FIG. 1 is an overall schematic view of the first embodiment of the present invention, FIG. 2 is an overall schematic view of the second embodiment, FIG. 3 is a flow chart of the first embodiment of the present invention, and FIG. 4 is the present invention. It is a flowchart of the 2nd Example of. 2 …… Hot water heater 3 …… Bath device 4 …… Bathtub 8 …… Outgoing pipe (additional heating circulation pipe) 9 …… Return pipe (additional heating circulation pipe) 10 …… Circulation pump 11 …… Pressure sensor (water pressure detector) )

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideki Nomura 32, Akashi-cho, Chuo-ku, Kobe-shi, Hyogo Incorporated Noritsu (72) Inventor Yasuhide Ikeuchi 32, Akashi-cho, Chuo-ku, Kobe Hyogo Prefecture Noritsu (72) Inventor Toyohiko Egami 32, Akashi-cho, Chuo-ku, Kobe-shi, Hyogo Incorporated Noritsu (72) Inventor Takahiro Matsuo 32, Akashi-cho, Chuo-ku, Kobe (Hyogo) In-house (72) Inventor Tadashi Matsubara 32, Akashi-cho, Chuo-ku, Kobe, Hyogo Prefecture Noritsu, Ltd. (72) Inventor Makoto Hamada 32, Akashi-cho, Chuo-ku, Kobe, Hyogo In-house Examiner, Hideaki Tazawa (56) References Sho 61-84445 (JP, U)

Claims (1)

[Claims] 1. An automatic bath device having a bath device connected to a bathtub with an additional heating circulation pipe and a circulation pump installed in the additional heating circulation pipe, and performing automatic dropping through the upper air heating circulation pipe. Therefore, in addition to providing a water pressure detector and a water flow switch in communication with the reheating circulation pipe outside the bathroom, when the air pressure is dropped, the inside of the reheating circulation pipe is air-purged before the water pressure is detected. The automatic bath equipment detects the presence or absence of water, and if there is running water, the water level is detected after air purging inside the circulation pipe by operating the circulation pump, and if there is no running water, the water level is detected after air purging inside the circulation pipe by dropping.