JP3128346B2 - Hot water 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 a hot water supply bath device which is a water heater having an automatic hot water filling function.

[0002]

2. Description of the Related Art Conventionally used heat sources (gas, oil,
For example, there is a type shown in FIG. 1 as a type in which a hot-water supply bath device in which water is heated by heating with water (electricity or the like) to perform hot-water supply and additional heating is operated by remote control. In this apparatus, when hot water from the hot water supply heat exchanger 1 is poured into the bathtub 12 via the bath heating circulation circuit 13, first, the bath heating circulation circuit 1 circulated to the bath heating heat exchanger 16.
The bath pump 18 of No. 3 is driven and it is confirmed that the bath water switch 19 is not turned on, and the pouring valves 6 and 9 are opened to pour a predetermined amount of water. Thereafter, the bath pump 18 is driven to confirm that the bath running water switch 19 is ON. If the bath running water switch 19 is not turned on, the pouring and the driving of the bath pump 18 are repeated, and the output value of the bathtub water level sensor 20 at the time when the bath running water switch 19 is turned ON is obtained. I remembered it as the reference water level.

[0003]

However, in this type of bathtub water level sensor 20, the water level between the water level sensor provided in the bath heating circulation circuit and the bathtub is sealed and the water pressure is detected. 4 (A), (B) even when the switch is turned on
As shown in the figure, the outgoing port a and the return port b of the bath heating circulation circuit 13 facing the bathtub 12 are in a state where both adapters are arranged in a horizontal arrangement so that both are only half the diameter, or the outgoing port a and the return port b. When the adapters are arranged up and down, the reference water level may not be accurate because they are not completely sealed.

[0004] In view of the above circumstances, it is an object of the present invention to provide a hot water supply bath apparatus that sets the reference water level when the bath heating circulation circuit is completely sealed with water, and solves the above-mentioned problems. Things.

[0005]

SUMMARY OF THE INVENTION The present invention circulates hot water in a bath tub through a bath heating heat exchanger through a bath heating circulation circuit to reheat the hot water in the bath tub. In a hot water supply bath apparatus that supplies hot water from an exchanger to a bathtub through a bath heating circulation circuit to fill the bathtub with water, a water level detection means provided in the bath heating circulation circuit and a water level of the bathtub are set. The water level setting means and the detected water level of the water level detecting means based on a certain position where the water level of the bathtub is higher than the connection between the bathtub and the bath heating circulation circuit and the set water level of the water level setting means are compared to the bathtub. It is provided with a control device for controlling hot water supply.

[0006]

With the above construction, the hot water guided from the hot water supply heat exchanger is opened to the pouring valve, flows into the bathtub through the pouring counter, and is filled with hot water. In this case, the detection of the water level in the bathtub is performed by a water level detection means provided in a bath heating circulation circuit serving as a reheating circuit circulating to a bath heating heat exchanger connected to the bathtub. Further, the water level detection by the water level sensor serving as the water level detection means is performed based on the water level when the connection part is sealed with the bath heating circulation circuit attached to the bathtub wall, but actually the connection is made. The water level when the outgoing port and return port are not completely water-sealed may become the reference water level, so once the water-sealing in the bath heating circulation circuit has been detected, a predetermined amount Hot water is added, and this water level is set as a reference water level to obtain a stable bathtub water level.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings of the embodiments.

FIG. 1 shows a hot water supply bath apparatus having two functions of hot water supply and additional heating for a bath tub. Reference numeral 1 denotes a hot water supply heat exchanger provided with a gas burner 3 having a hot water supply burner motor 2. A hot water supply pipe 5 led out of the heat exchanger 1 via a hot water supply thermistor 4 has a hopper 8 of a pouring valve 6, an overflow valve 7, a pouring valve 9, a check valve 10, and a bath pouring counter 1.
The hot water supply pipe 5 is connected to a return pipe 13 b of a bath heating circulation circuit 13 connected to the bathtub 12 and communicates with the bathtub 12. The bath heating circulation circuit 13
Gas burner 1 having a burner motor 14 arranged in
A bath thermistor 17, a bath pump 18, a running water switch 19, and a water level sensor 20 such as a semiconductor pressure sensor at a position in front of the bath thermistor 17 in the outgoing line 13a of the bath heat exchanger 16 provided with Heat exchanger 16 for bath
A hot water thermistor 21 is disposed in the return line 13b that has exited
The hot water supply bath apparatus 22 has the overall configuration. In the figure, reference numeral 23 denotes a hot water supply proportional valve of the hot water supply heat exchanger side gas pipe 24, 25 denotes a hot water supply gas valve, 26 denotes a bath proportional valve of the bath heat exchanger side gas pipe 27, and 28 denotes a bath. Gas valve,
Reference numeral 29 denotes a common gas valve of the two gas pipes 24, 27.

Next, the operation will be described.
This hot water supply bath device 22 is
The microcomputer 31 which is remotely controlled at 0 is incorporated, and the water level sensor 20 is connected to the first input port 31a of the microcomputer 31 via the amplifier circuit 32 as shown in FIG.
The output port 31c is connected to the reference voltage changing circuit 33, the second input port 31b is connected to the flowing water switch 19, and the input side of the microcomputer 31 is connected to the bath thermistor 17, the tap water thermistor 21, and the hot water supply thermistor 4. On the output side, a bath pump 18, a pouring valve 6, a pouring valve 9, an overflow valve 8, a common gas valve 29, a hot water gas valve 25, a hot water proportional valve 23, a bath gas valve 28, and a bath proportional valve 2
6, burner motors 2, 14 and the like are connected.

Here, when there is no hot or cold water in the bathtub 12, when the bath automatic operation switch 34 of the remote controller 30 is pressed, the bath pump 18 is driven, and the O of the running water switch 19 is turned on.
Check N / OFF operation. Running water switch 19 is O
In the FF state, the injection valves 6 and 9 are opened, the hot water supply burner 3 is burned, and hot water heated to a predetermined set temperature is supplied to the bathtub 1.
Pour into 2.

When the pouring counter 11 detects that pouring of a predetermined amount (for example, about 40 l) has been completed, the pouring valves 6 and 9 are closed, and the bath pump 18 is driven to release hot water in the bathtub 12. The ON / OFF operation of the circulating water switch 19 is checked. At this time, the running water switch 19 is turned off.
In the F state, the pouring operation (about 20 l after the second time) is repeated until the water switch 19 is turned on.

When the water switch 19 is turned on, an additional 20 liters of water are supplied to the circulation circuit 1 for bath heating.
3 and its connection part are sealed with water, and the water level is detected based on the water level of the bathtub 12 at this time. That is, the water level detected by the water level sensor 20 when 20 l is added to the pouring amount (40 + 20x) l when the water is sealed becomes the reference value,
The input value to the input port 31a at this time is
And the reference voltage changing circuit 33 adjusts it to “0”.

[0013]

As described above, in the hot water supply bath apparatus of the present invention, the bathtub and the water level sensor are completely filled by pouring a predetermined amount of water again after the water flow switch for detecting the hot water flowing by driving the bath pump is turned on. Since the water is sealed (at the time when the bath metal is completely poured), by setting this as the reference water level of the bath, accurate water level detection becomes possible, which has an effect of obtaining a stable bath water level.

[Brief description of the drawings]

FIG. 1 is a schematic view of a hot water supply bath apparatus showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of the microcomputer control.

FIG. 3 is an explanatory diagram of the remote controller.

4A and 4B are explanatory diagrams showing a connection part of a bath heating circulation circuit to a bathtub, wherein FIG. 4A shows a case in which a forward port and a return port of the connection part are arranged horizontally, and FIG. In this case, the mouth and the return port are arranged vertically.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchanger for hot water supply 6, 9 Filling valve 11 Bath pouring counter 12 Bath tub 13 Circulation circuit for bath heating 16 Heat exchanger for bath heating 18 Bath pump 19 Flow switch 20 Water level sensor

Continued on the front page (72) Inventor Hiroshi Okumura 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Yoshio Muto 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. In-house (72) Inventor Tadashi Ohata 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Toshiyuki Yokozuka 2--18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Yoshiaki Kaneko 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-5-18602 (JP, A) JP-A-5-180505 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24H 1/00 602

Claims (1)

(57) [Claims] 1. Hot water in a bathtub is circulated through a bath heating circulation circuit to a bath heating heat exchanger to reheat water in the bathtub, and hot water in the hot water supply heat exchanger is used for bath heating. In a hot water supply bath apparatus for supplying water to a bathtub through a circulation circuit to fill the bathtub, a water level detection means provided in a bath heating circulation circuit, a water level setting means for setting a water level of the bathtub, and a water level of the bathtub Equipped with a control device for controlling the hot water supply to the bathtub by comparing the detected water level of the water level detection means with the set water level of the water level setting means with reference to a certain position higher than the connection between the bathtub and the bath heating circulation circuit. Hot water bath device characterized by the following.