JP2908671B2 - Bath water circulation device with anti-freezing function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath tub water circulation device having an anti-freezing function capable of reliably protecting a functional portion from freezing.

[0002]

2. Description of the Related Art Conventionally, as one form of a bathtub water circulation device,
As shown in FIG. 3, the base end and the tip of the circulation pipe 52 are connected to the bathtub body 51, and the circulation pump 53 is
And a purifier 54 and a heater 55, and purifying the bathtub water by the purifier 54 while circulating the bathtub water through the bathtub body 51 and the circulation pipe 52 by the circulation pump 53, and furthermore, the temperature of the bathtub water by the heater 55. There is something that can be kept constant.

A temperature detector 56 is attached to the circulating pipe 52. When the temperature detector 56 detects a value below a certain temperature, the circulating pump 53 is driven to supply bathtub water to the circulating pipe 52.
There is a bathtub water circulation device X having an antifreezing function that circulates in the inside and prevents freezing. In FIG. 3, reference numeral 57 denotes a control unit, and 58 denotes an operation panel unit.

[0004]

However, the bath tub water circulating apparatus X having the above-mentioned anti-freezing function still has the following problems to be solved.

[0005] That is, the circulation pipe 52 of the bathtub water circulation device X generally has a portion that is exposed to the outside, and when the outside air temperature suddenly drops during severe cold winter, etc., the temperature detector 56 detects the temperature. Is detected, the circulation pipe 52 has already been frozen.

In this case, even if the circulation pump 53 is driven,
The bathtub water cannot be circulated, and as a result, there is a problem that not only prevention of freezing is not achieved, but also failure of the circulation pump 53 due to idling or the like.

An object of the present invention is to provide a bath tub water circulation device having an antifreezing function capable of solving the above-mentioned problems.

[0008]

According to the present invention, a suction port and a discharge port of a circulation channel are connected to a bathtub body, and a circulation pump, a temperature detector, and a heater are provided in a part of the circulation channel. While forming a functional part flow path, first and second flow path switching valves are respectively attached to the suction port side and the discharge port side of the functional part flow path,
In the bath tub water circulating apparatus in which the first and second flow path switching valves are connected by a bypass flow path and the functional section flow path and the bypass flow path are accommodated in a functional section casing, the temperature detector is not more than a certain value. When the temperature of the bathtub is detected,
The first and the second so as to become an internal circulation flow path connecting the functional section flow path and the bypass flow path from a circulation flow path communicating the function section flow path with the suction port and the discharge port. The present invention relates to a bathtub water circulating apparatus having a freezing prevention function, characterized in that a flow path switching valve is switched to circulate bathtub water in a functional unit casing and to operate a circulation pump and a heater.

With the above configuration, the first and second flow path switching valves can reliably shut off the alternating current between the circulation flow path and the internal circulation flow path. Since hot water can be circulated only through the circulation flow path, energy saving of the operation of the anti-freezing function can be achieved. In addition, since the bypass flow path is provided in the functional casing, the volume of bath water to be circulated is small. Can,
The energy saving can be further promoted.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention;

FIG. 1 shows a conceptual configuration of a bathtub water circulation device A according to an embodiment of the present invention.

A bathtub water circulation device A connects a suction port and a discharge port of a circulation pipe 2 forming a circulation flow path G to the bathtub body 1, and a part of the circulation pipe 2 is provided with bathtub water w. At the same time, a functional part J that cleans and heats and keeps heat is installed.

The functional part J includes a functional part flow path E in a functional part casing C, and a temperature detector S as a temperature detecting means, a circulation pump P, A vessel F and a heater H as a heat source are attached in series.

The circulation pipe 2 is provided between the bathtub water suction port 3 provided in the bathtub body 1 and the suction port of the circulation pump P, the discharge pipe of the circulation pump P and the bathtub body 1. Strong feed pipe 6 interposed between the bathtub water jet nozzle 5
The tub water w in the bathtub body 1 is sucked from the bathtub water suction port 3 through the suction pipe 4 by the circulation pump P, and the bathtub water jet nozzle 5
Further, the bathtub water w can be spouted into the bathtub body 1.

In the middle of the circulation pipe 2, the middle of the suction pipe 4 and the middle of the strong feed pipe 6, that is, the upstream end and the downstream end of the functional section flow path E are connected to the bypass flow path B. Is connected by communication.

Further, first and second flow path switching valves 7 and 8 as flow path switching means are attached to both ends connecting portions of the bypass flow path B, respectively, and the switching of the flow path switching valves 7 and 8 is performed. Thereby, the internal circulation flow path D including the functional section flow path E and the bypass flow path B can be formed in the circulation flow path G.

That is, as shown in FIG. 2, the bathtub body 1 side of the first and second flow path switching valves 7 and 8 is closed, respectively.
If the bypass flow paths B are opened, the flow paths will be
To the internal circulation flow path D including the temperature detector S, the circulation pump P, the purifier F, the heater H, and the bypass flow path B.

When switching to the internal circulation flow path D is performed by an electromagnetic on-off valve or the like instead of the first and second flow path switching valves 7 and 8, the electromagnetic on-off valve is connected to the bypass flow path B. It may be attached to the bathtub body 1 side of the connection portion instead of the connection portion at both ends, and may also be installed in the bypass flow path B.

By the way, the purifier F accommodates a purifying section having a microbial carrier such as barley stone therein, propagates microorganisms in the carrier, and utilizes a biofilm formed by the proliferation of the microorganisms. The bath water w can be purified.

Next, the control device of the bathtub water circulation device A will be described. In FIG.
U and a control unit including a timer. Based on the operation output from the operation panel unit OP connected to the control unit Q and the detection output of the temperature detector S, the circulation pump P, the heater H, the first
The driving of the second flow path switching valves 7, 8 and the like can be controlled.

In this embodiment, when the temperature detector S detects a temperature equal to or lower than a certain temperature, based on the detected output,
The control unit Q outputs a drive signal to the first and second flow path switching valves 7, 8 to drive the switching valves 7, 8 to switch from the circulation flow path G to the internal circulation flow path D, and to switch the circulation pump P A driving signal is output to the circulating pump P to perform an antifreeze operation of circulating the bath water w in the circulation flow path G in the internal circulation flow path D by driving the circulation pump P. To prevent them from doing so.

Further, an operation instruction signal is output to the heater H so that the bath water w circulating in the internal circulation passage D is kept at an appropriate temperature.

Therefore, even if the outside air temperature drops extremely, the bathtub water w in the internal circulation passage D does not freeze, and the adverse effect on the functional unit J due to the freezing of the bathtub water can be completely eliminated. it can.

An operation switch is provided on the operation panel OP.
11 and the like are provided, and when the operation switch 11 is turned on, power is supplied to the entire bathtub water circulation device A.

Next, the operation of the bathtub water circulating apparatus A having the above-described structure and having the function of preventing freezing will be specifically described with reference to FIGS.

First, when the operation switch 11 is pressed, the power is turned on throughout the bathtub water circulation device A. In this case, the first and second flow path switching valves 7 and 8 are both in the state shown in FIG. 1, and the bathtub water w circulates in the circulation flow path G by the circulation pump P and is purified by the purifier F. The normal operation of keeping the temperature at an appropriate temperature by the heater H is performed.

There is no problem when the purifying and warming operation is operating normally. However, the state where the bathtub water circulation permanent A is stopped,
When the outside air temperature decreases when the bathtub water circulation device A is stopped due to some abnormality, and the temperature detector S detects a value below a certain temperature and outputs the detected value to the control unit Q, the control unit Q By driving the second flow path switching valves 7 and 8, the bathtub body 1 is closed and the bypass flow path B is opened as shown in FIG. Switch to internal circulation channel D.

At the same time, the circulation pump P and the heater H are driven to keep the bathtub water w at an appropriate temperature while circulating the bathtub water w in the internal circulation flow path D.

As described above, the bath water w
The operation of performing the anti-freezing operation of circulating water is performed by the temperature detector S
Is continued until a temperature equal to or higher than a predetermined fixed temperature is detected. When the detected temperature becomes equal to or higher than a predetermined value, the control unit Q controls the first and second flow path switching valves 7, 8, the circulation pump P, A drive stop signal is output to the heater H.

As described above, in this embodiment, the temperature detector S
Detects a temperature equal to or less than a certain value, the first and second flow path switching valves 7 and 8 are driven to move the flow path of the bathtub water W from the circulation flow path G to the internal circulation flow path D in the functional part casing C. By switching and operating the circulation pump P and the heater H, for example, when the circulation pipe 2 is exposed outdoors and is directly affected by the outside air temperature, the outside air temperature suddenly rises during severe cold in winter. Even when the temperature decreases, the bathtub water W can be circulated and kept warm in the functional section flow path E of the internal circulation flow path D that is closed by driving the first and second flow path switching valves 7 and 8. The function part J can be protected by preventing freezing of the bathtub water W in the function part flow path E. Further, as described above, since the bathtub water W is a closed loop circulation, the bathtub water circulation The capacity is reduced and the capacity of the heated water is reduced. Efficiency is high, it is possible to save energy of such antifreezing operation.

In this embodiment, the temperature detector S
Detects the value below a certain temperature, the heater H is operated. However, the heater H does not always have to be operated, and the circulation pump P and the first and second flow path switching valves 7,
You can just drive 8.

[0032]

According to the present invention, the suction port and the discharge port of the circulation channel are connected to the bathtub body, and the function channel having a circulation pump, a temperature detector and a heater in a part of the circulation channel. And first and second flow path switching valves are respectively attached to the suction port side and the discharge port side of the same function section flow path, and the first and second flow path switching valves are connected by a bypass flow path. In the bath tub water circulating device in which the function section flow path and the bypass flow path are accommodated in the function section casing while being connected, when the temperature detector detects a temperature equal to or lower than a predetermined value, the bath section water flow path is changed to the function section. From the circulation flow path that communicates the flow path with the suction port and the discharge port,
The first and second flow path switching valves are switched so as to be an internal circulation flow path communicating the function part flow path and the bypass flow path, and the bathtub water is circulated in the function part casing and circulated. The pump and heater were activated.

Therefore, by driving the first and second flow path switching valves, the alternating current between the circulation flow path and the internal circulation flow path is surely shut off, and the bathtub body of the circulation flow path generally exposed to the outside. The bathtub water can be circulated in the internal circulation flow path inside the functional part casing even if the space between the and the functional part freezes, so the antifreeze operation is not hindered and the functional part is protected from the adverse effects of freezing can do.

In addition, the circulating pump is driven and the heater is operated. However, since the bathtub water is circulated in the internal circulating flow path forming the closed loop, the circulating capacity can be reduced, and the internal circulating flow by the heater can be reduced. The bathtub water in the road can be efficiently kept warm, and even if the outside air temperature drops extremely, the antifreeze operation can be performed with energy saving.

[Brief description of the drawings]

FIG. 1 is a conceptual configuration explanatory view of a bathtub water circulation device according to an embodiment of the present invention during normal operation.

FIG. 2 is a conceptual configuration diagram of the bathtub water circulation device during an antifreezing operation.

FIG. 3 is an explanatory view of a conceptual configuration of a conventional bathtub water circulation device.

[Explanation of symbols]

 A Bath tub water circulation device B Bypass passage D Internal circulation passage E Function passage F Purifier G Circulation passage H Heater P Circulation pump S Temperature detector 1 Bath tub body 2 Circulation pipe 7 First passage switching valve 8 Second Flow switching valve

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Senichiro Hozuki 1 Aichi-cho, Kasugai-shi, Aichi Aichi Electric Co., Ltd. (72) Inventor Tatsuo Sugimoto 1 Aichi-cho, Kasugai-shi, Aichi Aichi Electric Co., Ltd. (72) Inventor Hirohito Yasuda 1 Aichi-cho, Kasugai-shi, Aichi Prefecture Aichi Electric Co., Ltd. (72) Inventor Hidekazu Mori 1-Aichi-cho, Kasugai-shi, Aichi Prefecture Aichi Electric Co., Ltd. (56) References JP-A-63- 105353 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) F24H 1/00 602

Claims (1)

(57) [Claims] An inlet and an outlet of a circulation channel (G) are connected to a bathtub body (1), and a circulation pump (P) and a temperature detector (S) are provided in a part of the circulation channel (G). ) And a heater (H), and a first and second flow path cut-off ports are formed on the suction port side and the discharge port side of the functional section flow path (E).
Replacement valves (7) and (8) are attached, respectively,
The two flow path switching valves (7) and (8) are connected to the bypass flow path (B).
Connect, function part flow path (E) and bypass flow path
Bath water containing (B) in the functional unit casing (C)
In the circulation device, when the temperature detector (S) detects a temperature equal to or lower than a certain value, the flow path of the bathtub water (W) is communicated between the functional section flow path (E) and the suction port and the discharge port. From the circulation channel (G),
The first and second internal circulation passages (D) are provided so as to form an internal circulation passage (D) communicating the functional portion passage (E) and the bypass passage (B).
Flow path switching valve (7). Switch to (8)
A bathtub water circulation device having a freezing prevention function, characterized in that the bathtub water (W) is circulated in the ring (C) and the circulation pump (P) and the heater (H) are operated.