JPH0526363A - Shower device - Google Patents

Abstract

PURPOSE:To prevent a piping path system from freezing in a shower device. CONSTITUTION:When a set temperature (for example, 3 deg.C or below) is detected by a temperature detector 21, a controller 32 allows a mist discharge port switch-over valve drive device, a manual discharge port switch-over valve drive device 27, a squall discharge switch-over valve drive device 29, and a straight discharge port switch-over drive device 31 to be driven for the definite period of time (for example, two hours), or until the set temperature (for example, 3 deg.C or above) is attained, so that the self-heating of the respective devices is accelerated. This constitution thereby prevents a piping path system from freezing by means of heating action even if remaining water is left over in the insides of piping paths P.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shower device provided with freeze protection.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional shower device includes a straight spout 1 for leaving hot water as it is, a squall spout 2 for producing hot water, a mist spout 3 for producing hot mist, A hand spout 4 used by hand, a straight spout switching valve 5 for switching to each spout and stopping water, a squall spout switching valve 6, a mist spout switching valve 7, a hand spout switching valve 8 And a straight spout port switching valve drive device 9, a squall spout port switching valve drive device 10, a mist spout port switching valve drive device 11, a hand spout port switching valve drive device 12, which drives each switching valve.
Is equipped with. Further, the controller 14 and the exterior 1 for further inputting the control from each drive device and the setting from the setting device 13.
5, a drain port switching valve 17 for switching to the drain port 16 and stopping water, a drain port switching valve drive device 18 for driving the drain port switching valve 17, and a manual flow rate control valve 19.

When there is a risk of freezing, the shower device prevents freezing by draining water from the internal pipe in advance from the drainage port 16.

[0004]

However, in the above-mentioned conventional structure, there is a problem that the internal pipe is broken by freezing when the user forgets the draining operation.

The present invention is to solve the above-mentioned problems. After the temperature detector detects a set temperature, each switching valve is energized to self-heat and prevent the residual water in the internal pipe from reaching the freezing temperature. To do.

[0006]

In order to achieve the above-mentioned object, the present invention provides: when a temperature detector detects a temperature below a preset temperature,
Each switching valve drive device is provided with a controller to which a control law is applied so as to energize the switching valve drive device for a fixed time or intermittently.

[0007]

With the above structure, when the temperature detector detects a temperature below the set temperature, the controller energizes each switching valve drive device for a fixed time or intermittently, and the temperature at which the residual water inside the pipe does not freeze due to self-heating of the switching valve. Be warmed to.

[0008]

Embodiments of the present invention will be described below with reference to FIGS.

In FIG. 1, 20 is an exterior of a shower device, 21 is a temperature detector for measuring the temperature of hot water flowing from a water heater or the like, 22 is a flow control valve, and 23 is a flow control valve drive device. Reference numeral 24 is a mist water outlet switching valve for opening and closing the mist water outlet 3, and 25 is a mist water outlet switching valve drive device. Reference numeral 26 is a hand spout switching valve for opening and closing the hand spout 4, and 27 is a hand spout switching valve drive device. Reference numeral 28 is a squall spouting port switching valve for opening and closing the squall spouting port 2, and 29 is a squall spouting port switching valve drive device. Reference numeral 30 is a straight water outlet switching valve that opens and closes the straight water outlet 1, and 31 is a straight water outlet switching valve drive device. 32 is a controller, 3
Reference numeral 3 is an operation unit. Then, the controller 32 uses the temperature detector 2
1 and the signal from the operation unit 33 are input to each drive device 2
5, 27, 29, 31 are controlled. FIG. 2 shows a flowchart of the first embodiment.

In the above configuration, the controller 32 sets the temperature detector 21 to the set temperature (for example, 3 ° C. or less) in step S1.
Is detected, the mist water spout switching valve drive device 25,
The hand spout switching valve drive device 27, the squall spout switching valve drive device 29, and the straight spout switching valve drive device 31 are driven for a certain period of time (for example, 2 hours) to promote self-heating of each drive device to reach the freezing temperature. Try not to reach it. At that time, when each drive device is a DC motor, positive / negative drive is performed at a certain cycle (for example, 1 Hz), and when each drive device is an AC motor or solenoid, a drive signal is intermittently input at a certain period (for example, 1 Hz). By this, stable temperature heat generation can be obtained.

Therefore, the residual water in the pipe path P in the exterior 20 leading to the spouts 1, 2, 3, 4 flows out and freezes because the switching valves 24, 26, 28, 30 are opened. Does not reach. Further, even if some of the water remains after the water in the piping path P has been used for one day, the residual water does not freeze due to the heat generation effect.

FIG. 3 shows a flow chart of the second embodiment of the present invention. The configuration is similar to that of FIG. 1 of the first embodiment. In this embodiment, when the temperature detector 21 detects the set temperature (for example, 3 ° C. or less) in step S1, the controller 32 operates each drive device to drive the mist spout port switching valve drive device 25 and the hand spout port switching valve drive. The temperature detector 21 causes the device 27, the squall spouting port switching valve drive device 29, and the straight spouting port switching valve drive device 31 to operate in step S.
It is driven until it reaches a set temperature (for example, 3 ° C. or higher) in 2. At that time, when each drive device is a DC motor or an AC motor, positive / negative drive is performed at a certain cycle (for example, 1 Hz), and when each drive device is a solenoid, a drive signal is intermittently input at a certain period (for example, 1 Hz). By
A stable temperature exotherm is obtained.

According to this structure, by driving each drive unit, it is possible to save the labor of drainage and further prevent freezing.

FIG. 4 is a system diagram of the third embodiment of the present invention. FIG. 5 is a flowchart of the third embodiment.
In this embodiment, the same parts as those in FIG. 1 of the first embodiment are designated by the same reference numerals, detailed description thereof will be omitted, and different parts will be mainly described. The temperature detector 21 shown in FIG.
When the set temperature (for example, 3 ° C. or less) is detected in 1, the controller 32 gives a signal for draining to the drain port switching valve driving device 35 that drives the drain port switching valve 34 in step S3. Then, the water in the piping path P is drained through the drainage path P1, and the drain port switching valve 34 is closed in step S4. Then, thereafter, freezing is prevented by driving the respective water outlet switching valve drive devices in the same sequence as in the first embodiment.

FIG. 6 is a flow chart of the fourth embodiment of the present invention. The configuration is the same as that of the third embodiment shown in FIG. In the present embodiment, when the temperature detector 21 detects the set temperature (for example, 3 ° C. or less) in step S1, step S3
The controller 32 gives a signal for draining to the drain port switching valve driving device 35 that drives the drain port switching valve 34. Then, the water in the piping path P is drained through the drainage path P1, and the drain port switching valve 34 is closed in step S4. Then, the temperature detector 21 sets the mist spout switching valve drive device 25, the hand spout switching valve drive device 27, the squall spout switching valve drive device 29, and the straight spout switching valve drive device 31 to the set temperature (eg, the set temperature) in step S5. Drive until it reaches 3 ℃ or more). At that time, when each drive device is a DC motor or an AC motor, positive / negative drive is performed at a certain cycle (for example, 1 Hz), and when each drive device is a solenoid, a drive signal is intermittently input at a certain period (for example, 1 Hz). By this, stable temperature heat generation can be obtained.

According to the structure of this embodiment, the residual water inside the pipe can be reduced as much as possible, and by driving each drive device, it becomes stronger against freezing.

[0017]

As described above, in the shower device of the present invention, heat is generated by driving the switching valve drive device of each spout regardless of the presence / absence of drainage of residual water in the pipe. Freezing can be prevented.

[Brief description of drawings]

FIG. 1 is a system diagram of an embodiment of a shower device according to the present invention.

FIG. 2 is a flowchart of the device.

FIG. 3 is a flowchart of a shower device according to a second embodiment of the present invention.

FIG. 4 is a system diagram of a shower device according to a third embodiment of the present invention.

FIG. 5 is a flowchart of the device.

FIG. 6 is a flowchart of a fourth embodiment of the shower device according to the present invention.

FIG. 7 is a system diagram of a conventional shower device.

[Explanation of symbols]

1 straight spout 2 squall spouts 3 mist spout 4 hand spout 20 exterior 21 Temperature detector 22 Flow control valve 23 Flow control valve drive 24 Mist spout switching valve 25 Mist spout switching valve drive 26 Hand spout switch valve 27 Hand spout switching valve drive 28 Squall spout switch valve 29 Squall spout switch valve drive 30 Straight spout switch valve 31 Straight water spout switching valve drive 32 controller 33 Operation part 34 Drain port switching valve 35 Drain port switching valve drive device P piping path

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masayoshi Takamitsu             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd.

Claims (4)

[Claims] 1. A temperature detector, a flow rate control valve for controlling the flow rate, a flow rate control valve drive device for driving the flow rate control valve, a plurality of water discharge ports, and a temperature detector, which are located on the secondary side of the hot water supply means. Each switching valve for switching to a plurality of water discharge ports, each switching valve driving device for driving each switching valve, an operating section, and the flow rate adjustment based on an operation of the operating section and a signal from a temperature detector. A controller for controlling the valve drive device and the switching valve drive device, and the temperature detector, the flow rate control valve, the flow rate control valve drive device, a plurality of water discharge ports, the switching valve, the switching valve drive device, the operating portion, the controller surface When the temperature detector detects a temperature equal to or lower than a preset temperature for freeze prevention, the controller sends a drive signal to the flow rate control valve drive device and the switching valve drive device to switch the switching valve. A shower device that is driven for a certain period of time. 2. When the temperature detector detects a temperature equal to or lower than a preset temperature for freeze prevention, the drive signal from the controller to the switching valve drive device is continued until the temperature detector returns to the preset temperature. Item 1. The shower device according to item 1. 3. A temperature detector, a flow rate control valve for controlling the flow rate, a flow rate control valve drive device for driving the flow rate control valve, a plurality of water discharge ports, and a temperature detector located on the secondary side of the hot water supply means. Each switching valve for switching to a plurality of water outlets, each switching valve driving device for driving the switching valve, an operating section, and the flow rate control valve based on an operation of the operating section and a signal from a temperature detector. A controller for controlling the drive device and the switching valve drive device, and a signal from the controller, a drain port switching valve drive device for opening and closing a drain port switching valve for draining water in a pipe route to each spout, The temperature detector, the flow rate control valve, the flow rate control valve drive device, the plurality of water discharge ports, the switching valve, the switching valve drive device, the operation unit, the drain port switching valve and its switching valve drive device, and the exterior part that covers the controller surface. Consists of a temperature sensor for freeze protection Upon detection of a following constant temperature, the shower device driving signal from the controller to the switching valve drive device which is adapted after driving the drain outlet for switching valves, driven for a certain period of time the switching valve. 4. When the temperature detector detects a temperature equal to or lower than a preset temperature for freezing prevention, after the drive signal from the controller to the switching valve driving device drives the drain outlet switching valve, the temperature detector reaches the preset temperature. The shower device according to claim 3, wherein the switching valve is driven until the valve is restored.