JPS62156445A - Method and apparatus for preventing freezing water pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a method and device for preventing freezing of water pipes, and more particularly, when the outside temperature drops below a specified temperature, a temperature sensor detects this and This invention relates to a method and device for preventing water pipes from freezing by periodically opening a solenoid valve for a certain period of time and discharging water in the pipes from a side drain pipe intermittently by remote control using a timer.

"Conventional technology" Freezing of water pipes, hot water supply pipes, cooling pipes, etc. during cold weather can hinder the supply of necessary water and sometimes even lead to bursting of the pipes, so the following countermeasures have been considered in the past: I've been exposed to it.

That is, ■ Method of covering piping with foam material or pieces of cloth.

■ A method of loosening the faucet and letting a small amount of water flow continuously.

■ Wrap a heater around the pipe and turn on electricity to heat the Saiotsu tube with electric heat.

etc.

[Problem that the invention seeks to solve]

Among the above countermeasures, ■ is a method that has been commonly used in the past. Air, which is a poor conductor of heat, is trapped inside fibers such as foamed materials or pieces of cloth, creating a layer of air that does not undergo convection and is difficult to move. This is a method that creates a heat insulating layer between the piping and the outside air.It is extremely rational and has a considerable effect, but since it is placed in a particularly harsh environment, foam materials and The problem is that the pieces of cloth weather over time and their insulation effect diminishes.

In addition, the method (■) is also a commonly used method, in which the water in the pipes is continuously released in small amounts at all times, and the water in the pipes is circulated, thereby constantly replenishing the water temperature in the pipes along with the water. This prevents freezing and can be said to be a reasonable method, but it is cumbersome to operate the faucet each time, it is difficult to adjust the amount of water discharged at a constant level, and it is difficult to operate the water discharge. Faucets may freeze due to forgetting to do so, and faucets are used by an unspecified number of people.
There is also the risk that someone else may have forgotten to turn the faucet and turn it on, making it difficult to operate and manage the faucet in a consistent manner.

In the case of ■, the pipes are actively heated, which is effective in severe cold weather, but it requires the work of wrapping a heater around the pipes, the associated costs, safety measures related to electrical leakage, and especially in the case of long pipes. Considering this, there is a problem that it is generally not practical.

The present invention overcomes the problems of the conventional methods and devices for preventing freezing of water pipes as described above.

Mouth Stable operation is difficult.

C. It lacks safety and economy.

The purpose is to solve such problems.

[Means for solving problems]

The present invention has been made to achieve the above objects,
A temperature designator is used to specify a fixed detection temperature around O''C0 in advance, and the temperature sensor that detects the outside air temperature outputs a detection signal when the outside air temperature is below the specified temperature. , starts a first timer that outputs an electric pulse signal every period with a certain period of time, and the first timer is a first timer that operates for a certain period of time from the time of receiving the electric pulse signal every time the first timer receives an electric pulse signal. 2 timer is started, and by operating for a certain period of time, the second timer causes the solenoid valve attached to the side drain pipe branching from the faucet near the end of the pipe to open for a certain period of time by remote control. A water pipe freezing prevention method that intermittently releases water inside the pipe to the outside from a side drain pipe, and a temperature designator that specifies a certain detection temperature.
a temperature sensor that detects a temperature below the specified temperature; a first timer that is activated upon detection by the temperature sensor and outputs an electrical signal at regular intervals; and a fixed time period each time the electrical signal from the first timer is received. A second timer that operates and a solenoid valve that is attached to a side drain pipe branching from a faucet near the end of the piping and that is opened for a certain period of time by remote control when the second timer operates for a certain period of time. This is a water pipe antifreeze device.

"Operation" When the outside air temperature drops below the temperature specified by the temperature designator, the temperature sensor detects this and the first timer can start.

When the first timer starts, it sends an electric pulse signal to the second timer at regular intervals.

The second timer operates for a certain period of time every time it receives an electric pulse signal from the first timer.

When the second timer operates for a certain period of time, the solenoid valve is opened by remote control, and the water in the piping is released from the side drain pipe to the outside for a certain period of time. Fresh water is added to fill the void.

This new supply of water actually serves to replenish the water temperature.

In this way, water for maintaining the water temperature is periodically replenished into the piping for a certain period of time, that is, intermittently.

〔Example〕

Regarding one embodiment of the present invention, how the configuration of the present invention is actually embodied will be described below with reference to the drawings, together with its operation.

1 in Figure 1 is a control panel, which is generally installed on the wall of a building.

The control 51 includes switches 2. Temperature designator 3. 1st timer4. Second timer5. Replacement lamp 6° on lamp 7,
An off-ramp 8 is provided, and a power cord 9. Sensor code 10. A plurality of solenoid valve cords 11 are connected.

The other end of the power cord 9 is connected to a power distribution board (not shown).

The other end of the sensor cord 10 is connected to a temperature sensor 12 that detects the outside temperature.

The other ends of the plurality of electromagnetic valves 111 are respectively connected to a plurality of electromagnetic valves 13 provided as necessary.

A faucet 15 or a certain machine is provided at the end of the pipe 4, and a side drain pipe 16 is provided in the vicinity of the end in a multi-layered manner with the faucet 15.

A throttle 17 and the electromagnetic valve 13 are attached to this side drain pipe 16.

In the above configuration, the method of use and the operation will be explained using the operation explanatory diagram of FIG. 2 together with the above-mentioned FIG. 1.

First, when the switch of the control '4ffll m1 is turned on, the power is turned on and the power transmission lamp 6 lights up, indicating that the switch has operated normally.

Next, an appropriate temperature near the freezing temperature is designated and set using the temperature designator 3.

Appropriately means taking into account the time from when the outside air reaches freezing temperature until the water in the pipes actually freezes, and also taking into account a safe range.

When the temperature drops to the detection point 20, which is the point where the temperature curve 18 in FIG.
is detected and operated.

This temperature sensor 12 operates below the specified temperature, but when the temperature of the outside air rises again and reaches the non-detection point 21 or higher, it stops operating as shown by the sensor operation curve 22 in the figure, and from then on, It does not work if there is less than 1 timer.

Since the operating current generated by the temperature sensor 12 is weak, a series of necessary circuit processes (not shown) such as amplification are performed to start the first timer 4.

The first timer 4 constitutes a fixed period, for example, a period of 30 minutes or one hour obtained by multiplying 15 minutes, and generates an electric pulse signal 23 for each period, and the second timer 5
Start.

Although FIG. 2 illustrates a case where the cycle is 30 minutes, this may be set to 45 minutes or 60 minutes, depending on the actual situation.

When the second timer 5 is started, it is started every 30 minutes from the second timer 4 shown in the figure, and operates for only 5 seconds each time.

For example, if the piping is long, the continuous operation time may be set to 10 seconds to fully replace the water in the piping and maintain the water temperature perfectly.

When the second timer 5 starts, the solenoid valve 13 is started by remote control via the solenoid valve code 11, and the on-lamp 7 of the control panel 1 is ignited.

This on-lamp 7 allows the control 1 to know that the solenoid valve 13 is operating.

In addition, the off-lamp 8 is designed to always ignite when the switch 2 is turned on and the replacement lamp 6 is lit, and the on-lamp 7 is not lit, so it is difficult to check whether the equipment is operating normally. It also serves as a check.

The solenoid valve 13 has a built-in electromagnetic relay (not shown) and opens and closes the valve.As mentioned above, it is attached to the side drain pipe 16, and according to the operation of the second timer 5, the solenoid valve shown in the figure opens and closes. Open and close the valve as shown in operating curve 25.

When the valve is opened, water in the piping is discharged from the side drain pipe 16 as shown in a water discharge curve 26, and when the valve is closed, the water discharge stops.

In this way, water is discharged from the drain pipe 16 by the electromagnetic valve 13 intermittently at regular intervals, independently of the faucet 15, by remote control performed by the temperature sensor 12 and each device on the control panel 1.

Although these curves have a slight time lag, it is on the order of milliseconds and can be ignored in practical terms.

Therefore, the operating time of 5 seconds created by the second timer is 5 seconds.
This means to spray water for seconds.

Here, since the temperature sensor 12 detects the outside air temperature near the pipe 14, consideration is given to leaving the temperature sensor 12 in a temperature environment close to the temperature environment near the pipe to ensure accurate detection.

By the method of the present invention, the device automatically operates only when there is a risk of freezing in the pipes, and moreover, by discharging water intermittently at a preset predetermined period, Along with water, it replenishes the water temperature necessary for freezing prevention, preventing wasteful release of water, and economically preventing freezing.

Note that the throttle 17 can adjust the amount of water discharged from the side drain pipe 16 appropriately in advance.

Next, the operation of the method and apparatus for preventing freezing of a water supply constructed as above will be explained.

As we approach the winter season, when the outside temperature drops and there is a concern that the water pipes will freeze, the first thing the person in charge should do is turn on switch 2 on control panel 1.
is turned on, and the temperature designator 3 is used to designate a predetermined designated temperature 19 near the freezing temperature, that is, 0 degrees Celsius.

At this time, whether the switch 2 is turned on normally is confirmed by the ignition of the replacement lamp 6, and whether the other equipment is normal is checked by making sure that either the on-lamp 7 or the on-lamp 8 is lit. It is confirmed.

Also, if the on-lamp 7 is lit, make sure that the lit on-lamp 7 goes out within 5 seconds and that the on-lamp 8 lights up instead.

The above is the preparatory work, and is this done manually, or is the device automatically controlled from then on? ff1l is done.

Set as described above, and the outside temperature matches the temperature curve 1.
When the temperature gradually decreases as indicated by B and reaches a detection point 20 where it intersects with the specified temperature 19, the temperature sensor 12 detects this and operates, starting the first timer 4.

In response to this, the first timer 4 periodically sends out an electric pulse signal 23 to the second timer 5 every 30 minutes.

The second timer 5 continuously operates for 5 seconds according to the second timer operation curve 24 every time it receives this electric pulse signal 23, and the solenoid valve 13 is operated according to the solenoid valve operation curve 25 through the solenoid valve cord 11 for this sustained operation. Open the valve as shown.

As the electromagnetic valve 13 opens, water in the pipe 14 is discharged from the side drain pipe 16 as shown in a water discharge curve 26.

Note that when the water pressure is high or when it is desired to save water, the amount of water discharged can be adjusted by appropriately operating the throttle 17.

This emission is performed until the point indicated by the non-detection point 21 by the temperature sensor 12, that is, while the temperature sensor 12 is sensing, the 30
This is carried out according to an intermittent pattern of 5 seconds per minute, and the water in the pipe 14 is always automatically sprayed and replenished to prevent freezing.

〔Effect of the invention〕

As explained above, the present invention combines a temperature designator that designates a constant temperature and a temperature sensor that detects the outside temperature, and detects when the temperature is below a designated temperature. When the outside temperature is such that there is a possibility of rupture can be completely eliminated.

In addition, the first timer sets the water spraying cycle, and the second timer sets the water spraying time for each cycle, and the two are combined to form an intermittent water spraying pattern, and water is sprayed in this pattern via the solenoid valve. Therefore, the actual time and amount of water to be sprayed can be extremely small, and water wastage can be significantly reduced.

Furthermore, we adopted a method of creating a side channel with a side drain pipe to release the water in the pipe, and installed a side drain pipe that is connected to the faucet in multiple ways, separate from the faucet at the end of the pipe, and an electrode valve that can be controlled by remote control. Since water is sprayed by opening and closing, water spray control to prevent freezing is performed automatically and stably, completely independent of the faucet. It has the advantage of completely eliminating freezing of the tube.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a water pipe antifreeze device according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram related to its operation. 3... Temperature designator, 4... First timer, 5... Second timer, 12... Quality sensor, 13... ... Solenoid valve, 14 ... Piping, 15 ... Faucet, 16 ... Side drain pipe, 23 ... Electric signal. Applicant: Atsushi Suzuki, Patent Attorney, Hashiba Iron Works Co., Ltd. Figure 1 Figure 2

Claims (2)

[Claims] (1) Use a temperature designator to specify a constant detection temperature of around 0° in advance, and have the temperature sensor that detects the outside air temperature output a detection signal when the outside air temperature is below the specified temperature. The detection signal activates a first timer that outputs an electric signal every period of a certain period of time, and the first timer operates for a certain period of time from the time of receiving the electric signal each time the first timer receives the electric signal. A second timer is started, and by operating for a certain period of time, the second timer remotely controls the solenoid valve attached to the side drain pipe that branches from the faucet near the end of the pipe. A method for preventing freezing of water pipes in which the water inside the pipes is released from the side drain pipe intermittently by opening the valve for a certain period of time. (2) A temperature designator that specifies a certain detected temperature, a temperature sensor that detects a temperature below the specified temperature, and a first timer that is activated when the temperature sensor is detected and outputs an electrical signal at regular intervals. and a second timer that operates for a certain period of time each time it receives an electric signal from the first timer, and a second timer that is attached to a side drain pipe that branches from the faucet near the end of the pipe, and that is operated for a certain period of time when the second timer operates for a certain period of time. , a water pipe antifreeze device equipped with a solenoid valve that is opened for a certain period of time by remote control.