JPH086806Y2 - Non-sprinkling snow melting device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a non-sprinkler device for the purpose of snowfall and snowmelt in the winter season in a severe cold region. Operates as a non-sprinkling snow-melting device when energized by the operation of the time-closed solenoid valve, and during a power failure, the snow-melting water drains down naturally before freezing, and even if it is clogged with rust or other deposits, straight double-row piping In addition, it is intended to provide a non-sprinkling snow melting device that secures a snow melting road surface by utilizing thermal energy of natural water.

[Prior Art] Conventionally provided snow melting methods include two methods, a sprinkling method using groundwater and a non-sprinkling method, and it is said that the non-sprinkling method is preferable in cold and severe areas.

The non-sprinkling type is roughly classified into a method of using water or an antifreezing liquid as a snow melting medium liquid.

Natural water is the most economical and long-lasting snowmelt effect,
At present, it is possible to use antifreeze to prevent freezing.

[Problems to be Solved by the Invention] The conventional techniques described above have the following problems.

When the snow-melting medium water in the snow-melting device loses its circulation power due to a power failure or the like, cooling and freezing of the snow-melting water that had been in operation to start the snow-melting starts, and finally complete freezing.

In order to prevent freezing of the snow-melting medium water, various anti-freezing methods such as antifreezing solution which are not frozen are being developed, but they have not been completely used for the following reasons.

1. It is difficult to perform a completely leak-free piping work of the antifreeze liquid as the snowmelt medium water of the non-sprinkling snowmelting device, and there is some leakage, so additional work of the antifreeze liquid and detection of its weight loss are necessary.

2. Leakage of antifreeze is not preferable for environmental protection.

3. It is troublesome to have a complete device for maintaining the antifreeze of snowmelt water.
A lot of time and money are spent.

That is, the financial burden is large.

For the above reasons, it is preferable to be able to use a liquid that does not worry about environmental protection, that is, natural water even if there is some leakage of the snow-melting medium water (such as antifreeze liquid) of the snow-melting device.

However, it is also true that it has the following difficulties.

1. If the circulation power of the snowmelt water in the snowmelt device is lost due to a power outage in the severe cold winter, the cooling and freezing of the snowmelt medium water will start sequentially,
A structure that drains the snow-melting medium water before freezing is required.

2. When the circulation of the snow melting medium water of the snow melting device becomes impossible,
It must have a structure that can be modified and repaired at any time.

3. The structure must be such that the snowmelt medium water drained before freezing does not adversely affect the snowmelt road surface.

[Means for Solving the Problems] The present application intends to solve the above-mentioned problems by the following configurations.

A. At the lowest part of the pipe with an appropriate slope where all the snowmelt medium water that lost circulation power during a power failure naturally gathers in order to be drained from the snowmelter before freezing A closed solenoid valve when energized is installed, and the snowmelt water that lost circulation due to a motor pump that stops with a power failure is naturally drained down the gradient pipe part of the snowmelt pipe by opening the solenoid valve.

In addition, in order to improve this drainage effect, an air vent will be provided at the highest point in the sloped pipe section. When power is turned on, the closed solenoid valve closes when power is turned on, and drainage stops, while the motor pump operates, so that the snowmelt medium water recovers its circulating force.

B. Even if the snow melting equipment, mainly the road surface piping is filled with dust, rust, etc. and the circulation power of the snow melting medium water is lost, it is necessary to use a long hard cleaning wire such as steel wire if the piping is arranged straight in the snow melting section. You can pierce it and open it for cleaning.

C. In case of power outage, the drainage that flows out is returned to the sewer or groundwater before freezing by opening the energized closed solenoid valve installed at the lowest part of the pipe where the total amount of snow melting medium water naturally gathers from the road surface pipe of the snow melting device. Protect the snow-melting road surface by inflowing it into the well through the drainage pipe installed in the inspection ditch so that it does not overflow to the road surface.

[Operation] The effect will be described.

[Embodiment of the Invention] Referring to FIG. 1, reference numeral 1 is a snow melting apparatus of the present invention.

No. 2 is a flat snow melting road surface and is composed of asphalt pavement.

Reference numeral 2A is an inspection groove formed in the central portion in the width direction extending in the longitudinal direction of the snow melting road surface.

This inspection groove 2A is located at a place where the snowmelt circulating water, which is natural water, is naturally flowing and concentrated at the time of power failure.

2B is an inspection board which is detachably attached to the inspection groove 2A for grasping the circulation operation state of the snow melting medium water and for maintaining the road surface and protecting the solenoid valve and the drain pipe.

In addition, the inspection board 2B is also useful in preventing such accidents because it is possible to study road freezing due to drainage overflow in advance.

Further, in the inspection groove 2A, a straight drainage pipe 2D having a thickness and a slope that allows drainage to the sewer or the groundwater reduction well 2C is provided.

Reference numeral 3 is a snow melting pipe that is piped inside the snow melting road surface. A gradient piping portion 31 is arranged in a plurality of rows arranged in parallel in the longitudinal direction that travels on and off the snow melting road surface at an appropriate gap capable of melting snow.
And a horizontal pipe portion 32 connecting these gradient pipe portions.

These gradient pipe portions 31 are formed to have an appropriate gradient so that the snow melting medium water can naturally flow down and drain.

The gradient piping portion 31 is connected to the straight drainage pipe 2D via an electromagnetically closed solenoid valve 4 during energization that allows the snow melting medium water to drain naturally from the gradient piping portion 31 in the inspection groove 2A.

The energized closed solenoid valve 4 is designed so that the energized closed solenoid valve 4 is opened to allow the snow melting medium water to flow down and drain naturally, and the energized closed solenoid valve 4 is closed to circulate the snow melting medium water. It is configured.

Then, the gradient piping portion 31 is piped in a straight line with a gradient that allows the snowmelt medium water to naturally flow down during a power failure from the middle portion of the thickness of the snowmelting road surface to the inspection groove 2A in the central portion of the snowmelting road surface. The pipe will extend to the both ends of the snowmelt road surface for a section centered on 2A.

Further, when the above-mentioned snow melting medium water is circulated and drained to prevent freezing, an air vent 3A is provided at the highest part of the gradient pipe portion 31 in order to improve the drainage efficiency.

This is to improve the snow melting effect by discharging the air so that the snow melting water at the time of power failure is discharged quickly and naturally to prevent the snow melting pipe 3 from freezing, and at the time of energization, the snow melting medium water is quickly circulated. .

The air vent 3A is located in an air vent inspection hole 2E formed in the snow melting road surface 2, and an inspection protection lid 2F or the like is detachably attached to the air vent inspection hole 2E to protect the road surface.

An adjustment cock and a water meter (not shown) that send an appropriate amount of water into the gradient piping part may be installed in the air vent inspection hole 2E, but at a glance, check these for inspection and pipe cleaning. It may be replaced with an inspection groove as much as possible.

Furthermore, since the above-mentioned gradient piping part is linear, dust,
If snow melting water cannot be circulated due to rust, etc., the inspection and protection lid 2F can be removed, and a long hard cleaning wire such as steel wire can be used to pierce and open the clogging material. As a result, the drainage efficiency at the time of power failure can be improved.

FIG. 4 shows the condition of the sloped piping part in the case of the snow melting road surface 22 which is an inclined ground, but in many cases, it is easier to construct and manage the snow melting plan when the inclined ground is defined as one section.

The basic idea of implementation is the same as in the case of flat-section snow melting in Fig. 1, but if the snow-melting water loses its circulatory power due to a power outage or the like on the snow-melting road surface 22, it will naturally flow down to the lower part of the sloping land. The inspection groove 2A having the inspection board 2B is provided, the snow melting pipe 3 is piped in the snow melting road surface 22, and the slope pipe portion of the snow melting pipe 3 is subjected to the above inspection through the closed solenoid valve 4 when energized. It is connected to the straight drainage pipe 2D in the groove 2A.

[Advantages of the Invention] Since the present invention is configured as described above, it has the following effects.

Non-sprinkling snow melting device Operates at the same time as the circulation of snow melting water.The anti-freezing device releases the snow accumulated on the road surface by radiating the natural water used in the non-sprinkling snow melting device as circulation medium water in the circulation. Most of the circulating force as the melting or water of the snow-melting medium is due to the operation of the motor pump during energization.

 Winters in northern countries are severe and sometimes blackouts occur.

At this time, the snow-melting medium water in the snow-melting device loses its circulation power, and the freezing starts in sequence until it finally becomes completely frozen.

In such a case, if the snowmelt composition used so far was enormous, it would not be as expected as it would be, and sometimes it was better than waiting for the arrival of spring while feeling sorry for the winter season. Then, the following two points are solved, that is, the snow melting medium water can be circulated again by freezing and removing the clogging in the piping, and the snow melting operation is performed.

1.If the snowmelt medium water stops circulating due to a power outage, etc., a closed solenoid valve when energized is installed in the lowest portion of the pipe that naturally flows through the pipe that is straight and has a constant gradient before freezing starts. The water is drained one after another and the piping of the snow melting device becomes hollow.

In addition, drainage should be allowed to flow into the sewer or return well so that it will not overflow and freeze on the road surface.

At the same time as the energization, the closed solenoid valve closes when energized, and the circulation of the snowmelt medium water starts as a snowmelt device.

In addition, an air vent is installed at the top of the pipe to increase the drainage efficiency of the snow melting device or the inflow efficiency of the snow melting medium water.

2. If the pipe of the snow melting equipment is filled with dust or rust, or if the snow melting medium water freezes and the inside of the piping is filled with ice, above all, pierce this part with a long hard cleaning wire such as steel wire and gradually open and clean it. Must be able to.

For that purpose, it is possible to open the double-row pipes by crushing the ice one after another and opening the pipes even after freezing by making the straight pipes in the double-row.

Since it is a snow melting device that was developed in consideration of the above, natural water that is economical and stays in a wide area can be used as a snow melting medium liquid, is drained from the pipe during a power failure, and is a snow melting pipe when energized. The use of a solenoid valve that is closed when energized allows snowmelt medium water to flow in and operate in a snowmelt circulation mode, thus eliminating the need for manpower for management.

Even if the water in the snow melting pipe freezes due to some trouble, it can be pierced and opened easily with a long hard cleaning wire even in winter, so it can be used as a useful snow melting device that has never existed before.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a snow melting pipe state on a flat ground, FIG. 2 is an enlarged sectional view taken along the line AA, FIG. 3 is an enlarged sectional view taken along the line BB, and FIG. Fig. 5 is a schematic perspective view showing a piping state, Fig. 5 is an enlarged sectional view taken along line CC, Fig. 6 is an enlarged sectional view of portion a, Fig. 7 is an enlarged sectional view of portion b, and Fig. 8 is a portion of portion c. It is an expanded sectional view. 1 ... snow melting device, 1 ... snow melting road surface, 22 ... snow melting road surface on sloping ground, 2A ... inspection groove, 2B ... inspection panel, 2C ... sewer or groundwater return well, 2D ... straight drainage pipe, 2E ... … Air venting inspection hole, 2F …… Inspection protection lid, 3 …… Straight line double row snow melting pipe, 31…
… Gradient piping part, 32… Horizontal piping part, 3A… Air vent, 4… Closed solenoid valve when energized.

Claims (5)

[Scope of utility model registration request] 1. An inspection groove 2A is formed in a central portion in a width direction extending in a longitudinal direction of a snow melting road surface 2 formed of asphalt pavement on a flat snow melting road surface, and a sewer or a groundwater reduction well is formed in the inspection groove 2A. A straight drainage pipe 2D with a thickness and a slope that can drain water to 2C is piped, and the snowmelt pipe 3 piped in the above-mentioned snowmelt road surface is arranged in a plurality of rows in a longitudinal direction coming and going in an appropriate gap capable of melting the snowmelt road surface. It consists of a gradient piping part 31 that is piped with a certain gradient, and a horizontal piping part 32 that connects these gradient piping parts.The gradient of these gradient piping parts is such that the snow melting medium water can naturally flow down and drain. The gradient pipe portion 31 is connected to the straight drain pipe 2D via the closed solenoid valve 4 during energization that allows the snow melting medium water to drain naturally from the gradient pipe portion within the inspection groove 2A. Closed solenoid valve 4 When the power is turned off, the closed solenoid valve 4 is opened during energization so that the snow-melting medium water naturally flows down and is drained, and when the power is turned on, the closed solenoid valve 4 is closed during energization so that the snow-melting medium water circulates in the snow melting pipe 3. The energized closed solenoid valve 4 installed at the lowest part of each row of the gradient pipe parts 31 arranged in parallel is opened at the time of power failure and finished with an appropriate gradient so that it can flow down to the closed solenoid valve 4 when energized. In order to improve drainage efficiency when flowing out to the straight drainage pipe 2D, and when energizing, the closed solenoid valve 4 closes when energized and the snowmelting medium water is circulated in the snowmelting pipe 3 to perform snowmelting operation and to prevent freezing, A non-sprinkling snow melting device characterized in that an air vent 3A is provided at the highest part of the straight double row snow melting pipe 3. 2. An inspection panel 2B is attached to and detached from the inspection groove 2A for the purpose of grasping the circulation operation state of the snow melting medium water, and for protecting the road surface and closing the solenoid valve 4 when energized and the straight drain pipe 2D. The non-sprinkling snow melting apparatus according to claim 1, which is mounted freely. 3. The air vent 3A is located in an air vent inspection hole 2E opened on the snow melting road surface 2 at the highest position of the straight double row snow melting pipe 3, and the air vent inspection hole 2E can be detachably attached with an inspection protection cover 2F or the like. The non-sprinkling snow melting apparatus according to claim 1 or 2, which is attached to a vehicle to protect the road surface. 4. The above-mentioned inspection groove 2A having an inspection board 2B is provided so that when the snowmelt water loses its circulation power due to a power outage or the like, the inspection groove 2A having an inspection board 2B is provided on the snowmelting road surface 22 which is an inclined ground. A snow melting pipe 3 is provided inside the pipe 22, and a gradient pipe portion 31 of the snow melting pipe 3 is connected to the straight drain pipe 2D in the inspection groove 2A via the electromagnetically closed solenoid valve 4. The non-sprinkling snow melting apparatus according to any one of claims 1 to 3. 5. The gradient pipe portion 31 as a straight pipe,
If snow melting water cannot be circulated due to dust or rust, remove the inspection protection lid 2F and the inspection board 2B from here, and connect the steel wire, etc. between the air vent 3A of the gradient piping and the closed solenoid valve 4 when energized. The non-sprinkling snow melting apparatus according to any one of claims 1 to 4, wherein the long hard cleaning wire is capable of piercing and opening a clogging object.