JPH10195839A - Snow melting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a snow melting apparatus in which overheat of a furnace body can be prevented. SOLUTION: A snow melting tank 7 of a snow melting apparatus 1 is so constructed that the wall surfaces 7a, 7b are inclined to make the tank gradually narrower as it goes to the lower side. By this construction, snow or melting water thrown into the snow melting tank 7 are guided to drop on the furnace body 3 side, whereby the furnace body 3 is always brought into contact with the snow and melting water so as to prevent overheat of the furnace body 3. Further, the snow melting water in the snow melting tank 7 is guided along the inclined inner wall surfaces 7a, 7b to the furnace body 3 side, so that such snow melting water and the snow moving with the snow melting water are not brought into contact with the furnace body 3 so as to prevent overheat of the furnace body 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion-type snow melting apparatus, and more particularly to a snow melting apparatus in which snow accumulated on a road or a parking lot is thrown into a tank and melted.

[0002]

2. Description of the Related Art A conventional snow melting apparatus of this kind is disclosed in, for example, Japanese Patent Application Laid-Open No. 1-256612.
A furnace is disposed in the snow melting tank, and high-temperature combustion gas is sent from the combustion burner into the furnace to melt the snow put in the snow melting tank. This publication discloses a configuration in which a large number of combustion gas outlets for delivering combustion gas are formed at the upper part of a furnace body to melt snow put on the furnace body.

[0003] Also, JP-A-8-20926 discloses that
Combustion gas blowing holes are formed around the furnace body by cutting and raising a large number of pieces, and a contact area with the snow put into the furnace body is increased to prevent overheating of the furnace body and deviation of the snow melting function.

[0004]

However, in the above-described conventional snow melting apparatus, a space is formed between the furnace body and the snow melting tank when snow is thrown into the tank or after the thrown snow begins to melt. In some cases, a portion of the furnace body does not come into contact with snow or snowmelt water, and the furnace body may be partially heated.

Accordingly, an object of the present invention is to provide a snow melting apparatus capable of preventing overheating of a furnace body.

[0006]

Means for Solving the Problems In order to achieve the above object, an invention according to claim 1 comprises a combustor for supplying combustion gas, a furnace body to which combustion gas is supplied, and a furnace body. In a snow melting apparatus including a snow melting tank to be stored, an inner wall surface of the snow melting tank is inclined such that an opening area becomes smaller toward a lower portion with respect to an upper opening area.

According to the first aspect of the present invention, when snow is put into the snow melting tank, the snow is guided to the inclined inner wall surface of the snow melting tank, guided to the bottom of the snow melting tank, and is placed around the furnace body. Guided towards. Therefore, the furnace body is always in contact with snow or snow melting water, so that the furnace body can be prevented from overheating. In particular, it prevents the formation of a partial space of snow in the snow melting tank and the partial overheating of the furnace body. Also, the snowmelt water in the snowmelt tank is guided to the furnace body along the inclined inner wall surface, and the furnace is moved so that the snowmelt water and the snow moving with the snowmelt water move toward the furnace body and come into contact with the furnace body. Prevents overheating of the body.

According to a second aspect of the present invention, in the first aspect of the present invention, the roof of the furnace body is formed by stacking plate bodies at different levels, and a hot air passage through which hot air passes through the overlapping portion. It is characterized by having.

According to the second aspect of the present invention, during operation of the snow melting apparatus, the combustion gas (high-temperature gas) burned by the combustor flows into the snow melting tank from the hot air passage between the plates constituting the roof. Released. Since the furnace body is constructed by stacking plate bodies on different levels, hot air is blown out along the plate body, so there is little exhaust resistance, there is no combustion heat stagnation, and abnormal overheating of the furnace body is prevented. I do. In addition, the stepped plates prevent molten water from penetrating and can also sweep the molten water. Further, since the roof is simply assembled by stacking the plate bodies, it is easy to manufacture.

[0010] The invention described in claim 3 is the invention according to claim 1 or 2.
In the invention described in (1), a shower for jetting water is provided in the snow melting tank. According to the third aspect of the present invention, the inside of the snow melting tank is provided with a shower for jetting water. The water jetted from the shower is guided to the inner wall surface of the snow melting tank, and the area of the snow melting tank is reduced. Since the water flows toward the narrowed furnace body, the snow in the snow melting tank is guided to the furnace body along the inner wall surface together with the shower water and the snow melting water. Therefore, snow or snowmelt water in the snowmelt tank easily contacts the furnace body, and the furnace body can be reliably prevented from overheating.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG.
An embodiment of the present invention will be described in detail with reference to FIG. As shown in FIGS. 1 to 3, a snow melting apparatus 1 according to an embodiment of the present invention has a trapezoidal shape with a short base at a cross section that intersects in a longitudinal direction, and includes a furnace body 3 in a snow melting tank 7. The furnace body 3 is provided with an opening 5a for a flame 5a of the combustor 5. The snow melting apparatus 1 is buried in the ground and has a configuration in which an open / close lid (not shown) is opened to put snow into the snow melting tank 7 when used, and the open / close lid is closed when not in use. The snow melting apparatus 1 includes a machine room 1 in which a burner as a burner 5 is disposed.
3 and a snowmelt tank 7 into which snow is put, and a flame outlet 5 a extends into the snowmelt tank 7.

As shown in FIG. 1 and FIG.
The furnace body 3 is placed at the center thereof, and a drain groove 11 is provided on one side thereof. The water collected at the bottom of the snow melting layer 7 is discharged from the drain pipe 12 through the drain groove 11. It has become. In the cross section shown in FIG. 1, the snow melting tank 7 is inclined such that the inner wall surfaces 7 a and 7 b are closer to the furnace body 3 as they go downward. That is, the lower width LW is set to be smaller than the upper width UW of the snow melting tank 7, in other words, the lower inner area is smaller than the upper inner area. As described above, by inclining the inner wall surfaces 7a and 7b of the snow melting tank 7, the snow thrown into the snow melting tank 7 is guided by the inclined inner wall surfaces 7a and 7b of the snow melting tank and contacts the furnace body 3. It's easy to do. The snow melting tank 7 has its wall surfaces (inner wall surfaces) 7a, 7a.
Since b is inclined so as to have a substantially wedge shape as a whole, when a hole is dug and installed on the ground, the wedge-shaped hole is easily dug,
Easy installation of snow melting tank.

As shown in FIG. 3, the combustor 5 includes a snow melting tank 7.
Is installed in a machine room 13 adjacent to the inside, and a partition wall 15 for separating the snow melting tank 7 and the machine room 13 is provided with a burner flame 5
a is attached. This flame outlet 5a blows out a combustion gas (flame) into the furnace body 3 arranged in the snow melting tank 7.
As shown in FIG. 2, a combustion air intake duct 17 is provided beside the machine room 13.
From the air for combustion.

The furnace body 3 generally has a roof 16 having a chevron at the top, and a roof 16 extending downward from the inside of the roof 16.
, And the roof 16 is formed by stacking plate bodies 21 at different levels. The plate 21 is
As shown in FIG. 3, the front plate 23 on the side of the
A belt-like plate 21 is bridged between the rear plate 25 and the rear plate 25 away from a, and as shown in FIG. The gap serves as a hot air passage 28 and blows out the combustion gas to the outside of the furnace body 3 to melt snow. Further, since the roof 16 has the plate bodies 21 overlapped with each other, the roof 16 has a configuration in which a large contact area between the inputted snow and the furnace body 3 can be obtained.

The side wall 18 is formed with a joint 20 joined to the roof 16 on the upper side, and an exhaust port 24 is formed on the joint 20 side. In this joint 20,
The roof 16 is an eave, so that the snow thrown from above the roof 16 does not directly hit the side wall 18, and even if the snow is thrown into the snowmelt tank fully, the space under the eave is not filled with snow, R is formed. As shown in FIGS. 1 and 4, the distance H between the side wall 18 and the skirt 26 on the bottom side of the snow melting tank 7 is different from that of the joint 2 with the roof 16.
It is smaller than the interval W on the 0 side, and is a so-called narrow skirt. That is, for the rectangular snow melting tank, the side wall 1
8, the upper joint portion 20 side is narrower, and the lower hem portion 2
6 side is narrow. As described above, by configuring the side wall 18 to be inclined, the volume of the space R between the furnace body 3 and the inner wall surfaces 7a and 7b of the snow melting tank 7 can be increased, and the snow storage volume can be increased. .

Inside the furnace body 3, a beam 2 supporting the plate body 21 is provided.
9 are provided. A plurality of beams 29 are provided for the purpose of supporting the loads of the plates 21 and 27 constituting the furnace body 3 and resisting thermal deformation of the plates 21 and 27. This beam 2
When the width of the furnace 9 is increased, the inside of the furnace body 3 can be divided into a plurality of semi-open rooms, and it is desirable to provide an appropriate number of the chambers according to the heat distribution state in the furnace body.

As shown in FIG. 1, the plate body 21 is formed by bending an upper edge portion 32 in the longitudinal direction outward.
It prevents snowmelt water and snow from entering the furnace body 3 and improves heat resistance rigidity. Further, since the furnace body 3 has a configuration in which the plate bodies 21 are stacked, hot air flows along the plate body 21, so that resistance in blowing out the hot air is small. Further, since the plate members 21 are merely stacked, the configuration is simple and the production can be facilitated.

Above the furnace body 3, a shower pipe (shower device) 31 for blowing out the snow melting water accumulated in the snow melting tank 7 is provided.
Are provided along the longitudinal direction of the furnace body 3. The shower pipe 31 pumps up water stored at the bottom of the snow melting tank 7 by the submersible pump 33. That is, the water supply pipe 35 connected to the shower pipe 31 is connected to a submersible pump 33 provided at the bottom of the machine room 13 and sucks water stored in the snow melting tank 7 via the dust strainer 37. Water is discharged from the shower pipe 31 to circulate water in which snow melts.

The water jetted from the shower pipe 31 is guided to the inner wall surfaces 7a and 7b of the snow melting tank 7, and
, And the snow between the furnace body and the inner walls 7a and 7b is guided to the furnace body 3 side.

A flame receiving plate 41 is provided in the furnace body 3 to prevent the flame from coming into contact with water collected at the bottom of the snow melting tank 7. On the flame receiving plate 41, a straightening plate 43 is set up vertically on the side facing the flame outlet 5a so as to form a substantially L-shape. While preventing the increase, reducing the heat load,
The flame is applied to the flow straightening plate 43 so that the jet of the flame is guided to the upper part in the furnace body 3 and is returned to the side of the flame outlet 5a so as to blow out evenly from the side of the flame outlet 5a.

The snow-melted water is stored at the bottom of the snow-melting tank 7, flows into a drain groove 11 provided on one side of the snow-melting tank 7 opposite to the combustion chamber 13, and is provided on the left and right sides in the longitudinal direction. One of the two drain pipes 12 selected is discharged.

Next, the operation of the present embodiment will be described. At the time of use, the opening / closing lid (not shown) is opened, and snow is put into the snow melting tank 7. After the snow is thrown into the snow melting tank 7, the burner 5
And high-temperature combustion gas is blown out from the injection port 5a.

When snow is put into the snow melting tank 7, the snow hits the inner wall surfaces 7a and 7b of the snow melting tank 7 and the inner wall surfaces 7a and 7b.
The nearby snow falls along the slope and slides into the space R between the furnace body 3 and the inner wall surfaces 7a and 7b. by this,
The snow around the furnace body 3 is reliably filled. Therefore, the furnace body 3
Is always in contact with snow, hardly creates a partial space, preventing overheating of the furnace body.

On the other hand, when the snow melting device 7 is operated,
The combustion gas (high-temperature gas) burned in is discharged into the snow melting tank 7 from the hot air passage 28 between the plates 21 constituting the roof 16. Since the furnace body 3 is configured by stacking the plate bodies 21 at different levels, the hot air is blown out along the plate bodies 21, so that the exhaust resistance is small, the combustion heat does not stay, and the furnace body is abnormal. Prevent overheating. In addition, the plate bodies 21 that are staggered to prevent the infiltration of the molten water can be provided, and the molten water can be scavenged. Further, since the roof is simply assembled by stacking the plate bodies, it is easy to manufacture.

The water injected from the shower pipe 31 is
Since the water is guided along the inner wall surfaces 7a and 7b of the snow melting tank 7 and flows to the furnace body side where the area of the snow melting tank 7 is reduced, the snow in the snow melting tank together with the water of the shower pipe 31 and the snow melting water is removed. Guide to approach. Therefore, the snow or snowmelt water in the snowmelt tank 7 easily comes into contact with the furnace body, and the furnace body 3 is prevented from overheating.

On the other hand, the high-temperature combustion gas emitted from the flame outlet 5a is emitted toward the inside of the furnace body 3. The released combustion gas (flame) strikes the flow straightening plate 43 and reverses and fills every corner in the furnace. The flow of the combustion gas in the furnace body 3 is not biased, and the temperature distribution can be made substantially uniform. To prevent the furnace body 3 from being deformed due to the deviation of the furnace. Moreover, since there is no deviation in the temperature distribution, substantially uniform snow melting can be performed in the snow melting tank 7,
The snow melting efficiency can be improved.

The combustion gas released from the flame outlet 5a fills the furnace body 3 to heat the furnace body 3 and is discharged outside from the hot air passage 28 between the plates 21 constituting the furnace body 3. To melt the snow thrown around the furnace body 3. Since the furnace body 3 is configured by stacking the plate bodies 21 on different levels, the infiltration of the molten water from the hot air passage 28 formed between the plate bodies 21 is prevented. Therefore, it does not adversely affect the combustion due to the intrusion of water, and in particular, prevents the pollution of the wastewater caused by the unburned state of the combustion gas. The hot air is applied to the plate 21.
Since the fuel is ejected to the outside along the path, the exhaust resistance is low, and unnecessary retention of combustion heat can be prevented, so that abnormal overheating of the furnace body is prevented.

The snow put around the furnace 3 is melted by the hot air from the hot air passage 28 and also melted by the heat of the furnace 3. Water generated by melting flows downward along the plate 21 of the furnace body 3 and accumulates at the bottom of the snow melting tank 7.
The water stored at the bottom of the melting tank 7 is sent by a submersible pump 33 to a shower pipe 31 via a water supply pipe 35, and is sprayed from the shower pipe 31 onto the furnace body 3. Since the temperature of the shower water is relatively high because it contains heat due to melting, it melts the snow in the snow melting tank 7, so that the snow melting function can be further improved. Also, since the shower water cools the entire surface of the furnace body 3, even if snow is thrown in, the furnace body does not cause thermal damage to the furnace body due to poor cooling.

The present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention. For example, as shown in FIG. 5, the side wall 18 of the furnace body 3 is not limited to be narrower and narrower toward the bottom, and may have an upright shape as shown in FIG.

[0030]

According to the first aspect of the present invention, the wall of the snow melting tank is inclined so that the inside of the snow melting tank becomes narrower toward the lower part, so that the snow and molten water that have been thrown in fall into the furnace body. The furnace body is constantly brought into contact with snow or snow-melting water, so that the furnace body can be prevented from overheating.

According to the invention described in claim 2, the furnace body includes:
Since the plate bodies are stacked in a staggered manner, there is no stagnation of combustion heat, and abnormal overheating of the furnace body is prevented. In addition, the stepped plates prevent molten water from penetrating and can also sweep the molten water. Further, since the roof is simply assembled by stacking the plate bodies, it is easy to manufacture.

According to the third aspect of the present invention, the water jetted from the shower is guided to the inner wall surface of the snow melting tank and flows to the furnace body side where the area of the snow melting tank is reduced. In addition, the snow in the snow melting tank is guided to the furnace body together with the snow melting water, so that the furnace body can be reliably prevented from overheating.

[0033]

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a snow melting apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of the snow melting apparatus shown in FIG.

FIG. 3 is a cross-sectional view of the snow melting apparatus shown in FIG.

FIG. 4 is a perspective view showing a snow melting tank and a furnace body.

FIG. 5 is a longitudinal sectional view of a snow melting apparatus according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Snow melting apparatus 3 Furnace body 5 Burner 7 Snow melting tank 7a, 7b Inner wall surface 21 Plate body 31 Shower pipe (shower)

Claims (3)

[Claims] 1. A snow melting apparatus comprising: a combustor for supplying combustion gas; a furnace body to which the combustion gas is supplied inside; and a snow melting tank containing the furnace body, wherein the snow melting tank has an opening area with respect to an upper opening area. A snow melting apparatus characterized in that the inner wall surface is inclined so that the opening area becomes smaller at the lower part. 2. The snow melting apparatus according to claim 1, wherein the roof of the furnace body is configured by stacking plate bodies on different levels, and includes a hot air passage through which hot air passes at the overlapping portion. 3. The snow melting apparatus according to claim 1, further comprising a shower for jetting water in the snow melting tank.