JP2001115504A - Freezing prevention of water supply equipment or defrosting method and mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such various problems as freezing prevention of a water supply equipment in a cold district or thawing of the frozen water supply equipment can be so executed that the equipment is buried in the deep ground having no influence of temperature falling thereon, steam of high temperature is blown into a pipe, or a steel pipe is heated by burner or the like from the outside in the case where a water supply pipe is the steel pipe and that additional expenses and lobors are required for burying the equipment in the deep ground, specially for the inspection or management of the equipment after it is buried, and also solve such a problem as the inside heating by steam or the like of high temperature or the outside heating by burner or the like can obtain good results as a temporary measures, not only requires permanent measures, but also requires special measures and labors for heating. SOLUTION: Ultrasonic waves are impressed on a water current in low temperature inside of a water supply equipment or a frozen section to make freezing prevention or thawing, and as a freezing prevention mechanism for the water supply equipment, a vibrator is set in the interior wall of a water flowing channel of the water supply equipment, and it is so constituted that the vibrator can be operated with a low temperature detected by a temperature sensor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prevents freezing of a water supply system such as a water supply pipe, a water faucet, a water stopcock and a water meter in a cold region, or defrosts a frozen water supply system. It concerns the method and its mechanism.

[0002]

2. Description of the Related Art Conventionally, in order to prevent freezing of a water supply system in a cold region or to thaw a frozen water supply system, a facility is buried underground at a depth where the temperature cannot be reduced, or high-temperature steam is blown into a pipe. Alternatively, in the case where the water supply pipe is an iron pipe, this is performed by heating the iron pipe from the outside with a burner or the like.

[0003]

However, burying equipment in a deep underground requires extra cost and labor, and in particular, leaves various problems in inspection and management of the equipment after burial. .

[0004] Further, internal heating by high-temperature steam or the like or external heating by a burner or the like can be effective for temporary measures, but it cannot be made permanent but also special for heating. There was a problem that required means and labor.

[0005] Furthermore, the freezing phenomenon is a seasonal phenomenon that occurs only in the winter season, and is a special phenomenon that does not need to be dealt with in the summer or warm season. .

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and is intended to prevent or defrost by applying an ultrasonic wave to a water stream having a lowered temperature in a water supply facility or a freezing portion. I made it.

[0007] When an ultrasonic wave is applied to an object, its energy finally changes into heat, and its characteristic is that it has a strong straightness, and when applied, the absorption coefficient is very different depending on the material. There is a characteristic that can use the heating effect,
For example, it is known that rubber, polyethylene, and the like have a high heat generation effect, vinyl chloride, acrylic resin, and Teflon (registered trademark) are slightly lower, and styrene and iron-containing resins are weak.

[0008] The present invention is to prevent or thaw water supply equipment by utilizing the property that the energy of the ultrasonic wave finally changes to heat.
The effect was confirmed.

As test equipment, a test sample in which tap water is put into a transparent acrylic pipe having a diameter of 20 mm and a length of 1000 mm in which a disc-shaped vibrator having a transmitter at the bottom is set;
20 mm in diameter and 1000 in length without setting a disk type vibrator
A test sample in which tap water was placed in a millimeter acrylic pipe was vertically installed in a freezer at an upper temperature of -14 ° C in the refrigerator, and a comparison test was performed between a sample irradiated with ultrasonic waves and a sample not irradiated with ultrasonic waves. .

The frequency of the transducer of the sample irradiated with the ultrasonic wave is
1.65MHZ constant, measurement point CH04 above acrylic pipe,
The measurement point CH02 is set at the lower part, and the measurement point CH08 is set in the storage near the upper part of the acrylic pipe of the sample, and the measurement point CH06 is set in the storage near the lower part.
Was set, and measurement was performed at 10 second intervals for 30 minutes.

As a result, a temperature change as shown in the graph of FIG. 2 was confirmed at each measurement point. The sample not irradiated with the ultrasonic wave was completely frozen, but the sample irradiated with the ultrasonic wave was measured at the measurement point CH04 on the acrylic pipe. At the lower measurement point CH06 showed a temperature variation between 1 ° C. and 4 ° C., but kept the temperature at 0 ° C. or higher,
No freezing was observed on the ultrasonic irradiation axis at a degree where icing of about 1 mm width was observed near the inner wall of the pipe.

The state of tap water at the time of ultrasonic irradiation is as follows. At first, it is confirmed that water droplets adhere to the inner wall of the pipe, and then a bulge occurs at the center of the water surface, and a portion about 10 mm below the surface becomes warm. Further, fog was observed above the water surface.

From the above experimental results, the frequency of the vibrator was set to 1.
It was confirmed that tap water can be prevented from freezing by setting it to about 65 MHZ. Measurement points CH02 and CH06
It was confirmed that by increasing the frequency of the ultrasonic wave by the temperature change, the temperature could be further increased, and it was possible to cope with the thawing of the frozen portion.

Further, a vibrator is set on the inner wall of the flowing water path of the water supply equipment, and the vibrator is operated by a temperature drop detected by a temperature sensor, so that freezing automatically responds to seasonal temperature fluctuations. This constitutes a prevention mechanism.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes an ultrasonic generator, which comprises a vibrator 2, a driving circuit 3 for operating the vibrator, a rectifier 5 for adjusting a current from a power plug 4, and an ultrasonic intensity controller 6.

The freezing prevention mechanism uses such an ultrasonic generator 1, sets the vibrator 2 at the bottom of the water distribution pipe A constituting the water supply facility, and measures the temperature of the flowing water in the flowing water path. Is provided.

When the water supply equipment is configured as described above, when the temperature sensor 7 measures and senses the set flowing water temperature, the power is turned on to the drive circuit 3 and the vibrator 2 is operated to operate the water distribution pipe A. Ultrasonic waves are applied in the axial direction, and appropriate temperature adjustment and microtremor are applied to the water flow in the pipe to prevent freezing of the flowing water.

The thawing of the freezing section is performed by taking measures to stop the water supply of the frozen water supply equipment, removing the joints and the like, setting the vibrator 2 in the freezing path, and turning on the power to the ultrasonic generator. By irradiating an ultrasonic wave having a frequency corresponding to the degree of freezing toward the freezing path, the thawing is performed by the converted heat energy of the ultrasonic wave traveling straight on the freezing path.

When a material having a high heat generating effect such as polyethylene is used for the piping of the water supply facility, it is possible to set the vibrator 2 outside the pipe to perform thawing.

[Brief description of the drawings]

FIG. 1 shows an embodiment of an antifreezing mechanism according to the present invention, and is an overall side view showing a state in which an ultrasonic generator is installed in a pipe portion of a water supply facility.

FIG. 2 is a temperature change graph showing the results of experiments performed by the applicant.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ultrasonic generator 2 Vibrator 3 Driving circuit which operates a vibrator 4 Power plug 5 Rectifier 6 Ultrasonic intensity adjuster 7 Temperature sensor A Water distribution pipe which constitutes water supply equipment

Claims (2)

[Claims] 1. An ultrasonic wave is used to reduce the temperature of a water flow in a water supply facility.
Alternatively, a method for preventing freezing or thawing of a water supply facility, wherein the method is applied to a freezing portion to prevent or thaw. 2. A freezing prevention mechanism for a water supply facility, wherein a vibrator is set on an inner wall of a flowing water path of the water supply facility, and the vibrator is activated by a temperature drop detected by a temperature sensor.