JPH1136254A - Snow melting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a snow melting device capable of preventing drain pollution and preventing the overheat of a furnace body. SOLUTION: In the snow melting tank 7 of a snow melting device 1, the upper edge sections 21 a and the lower edge sections 21b of adjacent plate bodies 2 1 are meshed with each other to form hot-air passages on the roof of a furnace body, and the infiltration of snow melted water from the hot-air passages is prevented. The pollution of drainage, occurring when water infiltrates into the furnace body and a burner becomes the unburned state to cause a functional stop or generate carbon, is prevented. The upper edge sections 21a and the lower edge sections 21b of the plate bodies 21 are folded, and the folded sections serve as reinforcing ribs to prevent the deformation of the furnace body. The plate bodies 21 are overlappingly arranged in steps to form the roof of the furnace body, the structure is simple, and it is easily manufactured.

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 In this type of conventional snow melting apparatus, for example, Japanese Unexamined Patent Publication No. Hei 6-306828 discloses that a large number of flame outlets formed in a furnace body blow hot air in the furnace body to remove snow in a snow melting layer. Is disclosed. In addition, Japanese Unexamined Patent Publication
-280227 discloses a configuration in which snowmelt water collected in a snowmelt tank is pumped up and used as shower water.

[0003]

However, in the snow melting apparatus disclosed in the former publication, there is an inconvenience that the snow around the furnace body melts and enters the furnace body from the flame outlet. When water enters the furnace in this manner, there is a problem that the function stops due to the unburned state of the burner and the wastewater is contaminated by carbon.

Further, in the technique disclosed in the latter publication, although the snow melting function is enhanced by a shower, there is a disadvantage that a cavity (bridge) is formed by partial melting of snow and damage is caused by overheating of the furnace body. .

Accordingly, an object of the present invention is to provide a snow melting apparatus capable of preventing pollution of waste water and 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 comprising a snow melting tank to be stored, a shower pipe provided above the furnace body, and a drainage structure for discharging water accumulated in the snow melting tank, the furnace body is configured such that a plate body is stepped obliquely in an oblique direction. A roof is formed by stacking, and the upper edge and the lower edge of the plate body are alternately extended outward and inward, and the combustion gas in the furnace body is interposed between the adjacent upper edge and lower edge. A hot air passage for blowing air.

According to the first aspect of the present invention, the hot air passage formed in the roof of the furnace body is formed such that an upper edge and a lower edge of an adjacent plate are engaged with each other. This prevents snowmelt water from entering the hot air passage.
In particular, since the hot air passage is shielded from the outside by the lower edge of the plate to prevent snow and water from entering, it effectively prevents water from entering the furnace. Accordingly, water enters the furnace and the burner is in an unburned state, preventing the function from being stopped, generating carbon, and preventing pollution of waste water by unignited fuel.
Also, since the furnace body is in a state where the upper edge and the lower edge are bent, the bent portion acts as a reinforcing rib,
Prevent furnace body deformation. Furthermore, since the roof of the furnace body is arranged so that the plate bodies are stacked stepwise, the configuration is simple and the manufacture is easy.

According to a second aspect of the present invention, a combustor for supplying combustion gas, a furnace body to which the combustion gas is supplied, a snowmelt tank containing the furnace body, and a furnace are provided above the furnace body. In a snow melting device including a shower pipe and a drainage structure that discharges water collected in the snow melting tank, the shower pipe includes:
It is characterized by being provided along a roof of a furnace body, and having a fountain hole for blowing water upward at least at an upper portion thereof.

According to the second aspect of the present invention, the shower pipe blows out water from the roof of the furnace body to cool the furnace body and melt the snow in the snow melting tank. The water blows upward from the shower pipe, and the water melts the snow covering the furnace body and splits the snow right and left near the center of the furnace body. The cracked snow is likely to fall along the slope of the roof of the furnace body, and the snow on the furnace body is separated and easily contacts the furnace body. Therefore, the snow melting function is improved and the furnace body is prevented from being overheated by the bridge.

According to a third aspect of the present invention, a combustor for supplying combustion gas, a furnace body to which the combustion gas is supplied, a snowmelt tank containing the furnace body, and a furnace are provided above the furnace body. A shower pipe, a pump that supplies water collected in the snow melting tank to the shower pipe, and a snow melting apparatus including a drainage structure that discharges water collected in the snow melting tank, wherein a side wall around the furnace body side wall, An outer wall is provided at an interval to form a water passage between the side wall and the outer wall of the furnace body, and the pump supplies at least water from the water passage to a shower pipe.

According to the third aspect of the present invention, when water flows through the water channel formed between the side wall and the outer wall of the furnace body, the water comes into contact with the furnace body and the temperature is increased. The warmed water is circulated through a pump and spouted out of the shower pipe. Therefore, the snow in the snowmelt tank can be melted by warm water, so that the snowmelt function is improved, the wastewater pollution due to incomplete combustion is prevented, and the furnace body is prevented from overheating.

The invention described in claim 4 is the first to third aspects of the present invention.
In the invention according to any one of the above, the top of the roof of the furnace body is provided with a top cover having a recess formed along the longitudinal direction, and a shower pipe is placed in the recess of the top cover. It is assumed that.

According to the fourth aspect of the present invention, the shower pipe can be stably and easily installed by disposing the shower pipe disposed on the top of the furnace body in the recess of the top cover.

According to a fifth aspect of the present invention, in the invention of the fourth aspect, a notch for a hot air passage is formed at a lower end of a side portion of the top cover. It is.

According to the fifth aspect of the present invention, since the hot air passage is formed by notch from the lower portion of the top cover and the hot air is blown out, the snow melting function is further enhanced, and the drainage by incomplete combustion is performed. To prevent pollution and prevent overheating of the furnace body.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the shower pipe is disposed along a roof of the furnace body and has a fountain hole for blowing upward water at least at an upper portion thereof. An outer wall is provided around the side wall of the furnace body at an interval from the side wall to form a water channel between the side wall and the outer wall of the furnace body, and at least water from the water channel is supplied to a shower pipe. It is a feature.

According to the sixth aspect of the present invention, the first aspect of the present invention includes the shower pipe and the water channel according to the second and third aspects. A synergistic action is provided by the combination of 2 and 3. Therefore, the snow melting function is improved, and wastewater pollution due to incomplete combustion is prevented, and overheating of the furnace body is prevented.

According to a seventh aspect of the present invention, a combustor for supplying a combustion gas, a furnace body to which the combustion gas is supplied, a snowmelt tank containing the furnace body, and a furnace are provided above the furnace body. In a snow melting apparatus including a shower pipe and a drainage structure for discharging water collected in a snowmelt tank, the drainage structure includes a lid above a drainage groove, and a filter wall having a large number of holes formed laterally. The filter wall is characterized in that a substantially upper half thereof is a blind plate.

According to the seventh aspect of the present invention, water accumulated in the snow melting tank during operation of the combustor is drained from the drain through a hole formed in the filter wall. The half is a blind plate without a hole, so the exhaust gas from the combustor is hard to enter. Therefore, wastewater pollution is prevented. Further, since water is collected up to a predetermined water level by the drainage ditch structure, the furnace body is immersed in the snowmelt water to prevent the furnace body from being heated.

According to an eighth aspect of the present invention, in the seventh aspect of the present invention, the filter wall includes a closing plate that closes the plurality of holes when there is no running water inside the drainage structure. I do.

According to the eighth aspect of the present invention, when there is no water flow, a large number of holes formed in the filter wall are closed. Outflow of gas can be reliably prevented.

[0022]

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 and 2, a snow melting apparatus 1 according to an embodiment of the present invention includes a furnace body 3 in a box-shaped snow melting tank 7, A hole 6 into which the flame port 5a is inserted is formed. The snow melting apparatus 1 is installed on the ground or buried under the ground, and when used, opens and closes an open / close lid (not shown) to put snow into the snow melting tank 7 and closes the open / close lid when not in use. I have. As shown in FIG. 2, the snow melting apparatus 1 includes a machine room 13 in which a burner as the combustor 5 is disposed.
And a snowmelt tank 7 into which snow is put, and a flame outlet 5 a extends into the snowmelt tank 7. FIG. 1 is a perspective view showing a main part extracted from the snow melting tank, and FIG. 2 is a plan view showing the entire snow melting apparatus 1.

The furnace 3 is placed in the center of the box shape of the snow melting tank 7, and a drain groove (drain structure) 11 is provided on one side (the side opposite to the machine room 13). The water accumulated at the bottom of the drain 7 is drained from one of the right and left drain pipes 12 through the drain groove 11.

The combustor 5 includes a machine room 1 adjacent to the snow melting tank 7.
3, a burner outlet 5a is attached to a partition wall 15 that separates the snow melting tank 7 from the machine room 13. This flame outlet 5a is a furnace body 3 arranged in a snow melting tank 7.
The combustion gas (flame) is blown out inside. A combustion air intake duct 17 is provided beside the machine room 13, and the combustion air is taken in from the duct 17.

As shown in FIGS. 1 and 3, the furnace body 3 generally includes a substantially mountain-shaped roof 14, side walls 18, and a bottom plate 16. The roof 14 is configured by stacking the plate members 21 on each other along the inclined surface at different levels.
Extends in the longitudinal direction between the front plate 23 on the side of the flame outlet 5a and the rear plate 25 separated from the flame outlet 5a. These plate members 21 are composed of an upper edge portion 21a and a lower edge portion 2a of an adjacent plate member 21.
1b are arranged so as to mesh with each other with a gap therebetween. The gap serves as a hot air passage (hot air port) 28, which blows out combustion gas to the outside of the furnace body 3 to melt snow.

The upper edge 21a of the plate 21 is bent outward at a substantially right angle along the longitudinal direction, and forms a weir to prevent water from entering the furnace body 3. Lower edge 2 of plate 21
1b is bent inward and extends downward beyond the upper edge 21a of the adjacent plate 21. In this manner, the upper edge portion 21a is bent outward to prevent snow and water from entering the hot air passage (hot air port) 28,
The lower edge portion 21b of the plate body 21 extends below the hot air passage 28 and shields snow and water from entering the hot air passage 28. Further, by forming the bent portion on the plate 21, the bent portion acts as a rib, and the strength of the plate 21, particularly the heat resistance rigidity, is improved. The hot air blown out from the hot air passage 28 flows along the plate 21, so that the resistance in blowing the hot air is small. Further, since the plates 21 of the same shape are merely stacked, the configuration is simple and the production can be facilitated.

The roof 14 is formed in a mountain shape as a whole, and guides the introduced snow and molten water toward between the furnace body 3 and the snow melting tank 7. A beam 29 for supporting the plate 21 is provided inside the furnace body 3. Beam 29
Supports the load of the plate 21 constituting the furnace body 3 and
Are provided for the purpose of countering the thermal deformation of the substrate.

As shown in FIGS. 4 and 5, a top cover 41 is disposed on the top of the roof 14 so as to straddle the upper edge 21a of the plate 21 disposed on the left and right. This top cover 4
1 has a substantially M-shaped cross section, and the shower pipe 31 is stably mounted in the M-shaped concave portion 41a. By forming the top cover 41 in an M shape,
Compared to the case of forming a square shape, the furnace height can be reduced and the hot air passages 28a and 28b can be branched in two directions, so that the ventilation resistance can be reduced. That is, the top cover 41 is formed with a large number of notches 43 below both side portions thereof to form hot air passages 28a and 28b branched right and left. Also, by forming the notch 43,
Since the joining portion between the top cover 41 and the roof 14 becomes discontinuous, the overall joining strength can be increased.

As shown in FIG. 5, the height of the notch 43 is formed at a distance b substantially equal to the distance between the upper edge 21a and the recess 41a. In relation to the distance a between the upper edges 21a of the left and right adjacent plate bodies 21, 2b ≧ a
With such a relationship, the ventilation resistance in the hot air passages 28a and 28b can be reduced, and generation of noise can be prevented. In this embodiment, a is about 20 mm.
And b is about 12 mm.

As shown in FIG. 3, the side wall 18 and the bottom plate 16 of the furnace body 3 are connected to each other by a connecting portion 8, and the connecting portion 8 is sealed so that water and snow do not enter. In the present embodiment, the connection portion 8 is formed by welding the side wall 1.
8 and the bottom plate 16 are sealed, but the sealing structure is not particularly limited. For example, one plate is bent to form the side wall 18 and the bottom plate 16, and the side wall 18 and the bottom plate 16 are substantially
Any structure may be used as long as the structure is such that water and snow do not enter by sealing the connection portion with the connection.

The connecting portion 8 is located at a position lower than the water level of a drain groove (drain port) 11 described later. That is, the snow melting tank 7
Has a storage structure for snowmelt water, which will be described later. In the snowmelt tank 7, water is stored up to a predetermined water level, and the connection portion 8 is immersed in the water stored at the bottom. The bottom plate 16 is cooled by the water to prevent the furnace body from overheating.

As shown in FIGS. 1 and 7, the side wall 18 of the furnace body 3
An outer wall 45 is arranged at a distance from the side wall 18 to form a water channel 47 between the outer wall 45 and the side wall 18. Snowmelt water in which snow is melted by the furnace body 3 is introduced into the water channel, and warm water heated by the furnace body 3 and hot air and having a relatively high temperature is introduced. In the outer wall 45, a large number of holes 48 are formed in a wall 45 a on the drain groove 11 side, and water in the snowmelt tank 7, which has been collected up to a water level of a weir 49 (described later) of the drain groove 11, is supplied to a water channel 47. Introduce the waterway 4
The water in 7 is heated by the heat of the furnace body 3. The side wall 18 is the bottom plate 1
The width of the hem side of the sixth side is narrowed, and the flowing water area of the water channel formed between the skirt side and the outer wall 45 is increased.

As described above, the shower pipe (shower) 31 is installed on the top cover 41 of the furnace body 3 along the longitudinal direction of the furnace body 3, and as shown in FIG. Injection holes 42
a, 42b, 42c, and 42d are formed. Upper hole 4
2a injects water substantially vertically upward, the pilot hole 42b spouts toward the recess 41a of the top cover, and the left hole 42c and the right hole 4
2b is injected in a substantially horizontal direction. In this way, by injecting water in all directions, the snow in the snowmelt tank can be efficiently melted. In particular, the water injected from the upper hole 42a is
As shown in FIG. 6, the snow on the furnace body 3 is split into two,
The snow can easily be dropped along the furnace body. Moreover, the bridge of the snow on the furnace body 3 is prevented, and the contact between the furnace body and the snow is promoted. The distribution of the amount of water for cooling the furnace body and blasting the snow can be adjusted by increasing or decreasing the number of holes or the size of the holes.

As shown in FIG. 2, the shower pipe 31 pumps up water stored at the bottom of the snow melting tank 7 by a submersible pump 33. The submersible pump 33 is installed so as to partition a part of the machine room 13, and a dust strainer 37 for removing dust is provided at an inlet for taking in water from the snow melting tank 7, and is configured to remove dead leaves and dust. .

The dust strainer 37 includes a submersible pump 33.
As shown in FIG. 8, four surfaces 37a, 37 are formed in a substantially L-shaped box shape, and into which water flows.
Punch holes are formed in b, 37c, and 37d to remove dust, dirt, and the like. As described above, the number of water inflow surfaces is four and the inflow surface area is large, so that the water can be sufficiently supplied to the shower pipe 31. In addition, since the punch plate (plate on which punch holes are formed) is merely formed in a box shape, the manufacturing cost is low.

Then, as shown in FIG. 2, 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
The water stored inside is discharged from the shower pipe 31 via the dust strainer 37, and the water in which the snow melts is circulated.

Next, the storage structure and drainage structure of the snowmelt water in the snowmelt tank 7 will be described. As shown in FIGS. 1 and 3,
The water that has melted snow is collected 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 at two locations provided on the left and right sides in the longitudinal direction. One of the drain pipes 12 is selectively discharged.

As shown in FIGS. 9 and 10, weirs 49 are provided on both sides of the drainage grooves 11, and drainage gaps 51 are formed on one of the right and left sides of the weirs 49. The water accumulated in the tank is drained after the snow melting operation is completed. The size S of the gap 51 is defined according to the snow melting ability, but in the present embodiment,
It is about 3.5 mm. The drainage is not limited to the gap 51,
A hole may be formed in the weir 49.

On the surface of the drainage groove 11 on the furnace body 3 side, a punched metal 53 having a large number of holes formed therein is disposed along the longitudinal direction of the groove. Is removed and drained. The drain groove 11 is provided with a lid 55 that covers the drain groove 11 so that snow in the snow melting tank 7 does not fall into the drain groove 11.

As shown in FIG. 11, by defining the position of the punch metal having a large number of holes at the water level H (H is 50 mm in the present embodiment), exhaust gas is drained from the holes of the punch metal. Flow into the road can be reduced. That is, the position of the punch metal is about half the standard water level L of the drain groove 11 (L is 100 mm in the present embodiment). The lid 5 of the drain 11 shown in FIG.
5 is attached obliquely to prevent snow from staying on the lid 55. In the drainage structure shown in FIG. 11, when the water level in the snowmelt tank exceeds H, the hole of the punched metal is closed by water and a so-called water trap is formed, so that exhaust gas is prevented from flowing to the drainage channel. Is what you do.

Further, as shown in FIG. 12, when there is no water flow, the outflow of exhaust gas can be reliably prevented by providing the punch metal with a plate 56 for closing each drain hole by its own weight. The upper end of the plate 56 is hinged, and hangs down by its own weight to close the hole of the punch metal. Then, when the water level rises and flowing water drained from the hole is generated, the water is pushed by the flowing water to open, and the exhaust gas flows from the hole of the punch metal until the water reaches the water level H shown in FIG. Prevent from spill.

Since the lower part of the side wall 18 of the furnace body 3 and the bottom plate 16 are immersed in the water stored in the snow melting tank having such a storage structure, the side wall 18 and the bottom plate 16 of the furnace body are melted by the snow melting water. By cooling the furnace body 3 and the furnace body 3, deformation and damage of the furnace body due to overheating are prevented. In addition, a certain amount of water in the snow melting tank 7 is collected and reused as shower water.

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. The combustor 5 is ignited, and a high-temperature combustion gas is blown out from the flame outlet 5a. The high-temperature combustion gas emitted from the blast port 5a is emitted into the furnace body 3.

The combustion gas discharged from the flame outlet 5a fills the furnace body 3 to heat the furnace body 3 and, at the same time, the hot air passage 28 between the plates 21 constituting the furnace body 3 and the top cover 4
The snow discharged from the hot air passages 28a and 28b and thrown around the furnace body 3 is melted.

In the furnace body 3, since the plate bodies 21 are formed so as to be superposed stepwise, and the upper edge part 21a and the lower edge part 21b which mesh with each other up and down so as to form the hot air passage 28 are formed. To prevent the infiltration of the molten water from the hot air passage 28 formed at the bottom. 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. In addition, since the hot air is blown out along the plate body 21, the exhaust resistance is small, 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 to the shower pipe 31 via the water supply pipe 35 by the submersible pump 33, and is ejected from the shower pipe 31.

The temperature of the shower water is relatively high because it contains heat due to melting and is heated through the water channel 47 that comes into contact with the furnace body 3, so that the snow melting function can be further improved. From the shower pipe 31, the snow on the furnace body 3 is split into two by vertically upward shower water blown out from the upper injection holes 42a, and the snow is easily slid down along the furnace body to prevent a snow bridge. And promotes contact between the furnace body and snow. The lower injection hole 42b mainly cools the roof 14 of the furnace body 3, so that even if snow is thrown, thermal damage to the furnace body due to poor cooling does not occur.
The left and right injection holes 42c and 42d mainly melt the snow around the furnace body 3.

The water collected in the tank due to the melting of the snow flows through the water channel 47 formed along the side wall 18 of the furnace body as described above, is heated by the heat of the furnace body 3, and is reused as shower water.

When a certain amount of water accumulates at the bottom of the snow melting tank 7, the water that has passed through the punch metal 53 overflows the weir 49, flows into the drain groove 11, and is discharged from the drain pipe 12. Water accumulates at a constant water level at the bottom of the snowmelt tank 7, and the connection portion 8 between the side wall 18 and the bottom plate 16 of the furnace body 3 is immersed in the stored water, so that the furnace body 3 can be sufficiently cooled. Can be prevented from being deformed or damaged by overheating. Moreover, the side wall 18 and the bottom plate 16
The connection part 8 is sealed to prevent water from entering, so that water can be prevented from entering the furnace body 3 to prevent the burner from being burned, stop functioning, and prevent pollution of waste water by carbon. it can. The water collected at the bottom of the snow melting tank 7 is introduced into the water channel 47 through the hole 48 of the outer wall 45a, heated by the heat of the furnace body 3 together with the above-mentioned snow melting water, passed through the dust strainer 37, and then showered by a submersible pump. Supply to pipe 31.

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.

[0051]

According to the first aspect of the present invention, the roof of the furnace body is constructed such that the plate bodies are stacked stepwise and inclined, and the upper and lower edges of the plate body are alternately arranged on the outside and the inside. And the upper edge and the lower edge are engaged with each other to form a hot air passage, so that the intrusion of snowmelt water from the hot air passage is prevented, and the pollution of drainage is prevented, The bent portion of the plate acts as a reinforcing rib to prevent deformation of the furnace body. Furthermore, since the roof of the furnace body is arranged so that the plate bodies are stacked stepwise, the configuration is simple and the manufacture is easy.

According to the second aspect of the present invention, since the shower water is ejected upward from the shower pipe, the snow at the upper part of the furnace body is divided into left and right sides to prevent snow bridges. In addition, the snow melting function is improved and the furnace body is prevented from overheating.

According to the third aspect of the present invention, since a water channel is formed between the side wall and the outer wall of the furnace body, water heated in contact with the furnace body is used as shower water. It improves the snow melting function, prevents wastewater pollution due to incomplete combustion, and prevents overheating of the furnace body.

According to the fourth aspect of the invention, since the shower pipe disposed on the top of the furnace body is disposed in the recess of the top cover, the shower pipe can be stably and easily installed.

According to the fifth aspect of the present invention, the cutout is formed in the lower portion of the top cover to form a hot air passage for blowing hot air, so that the snow melting function is further enhanced and incomplete combustion is performed. To prevent wastewater pollution by overheating of the furnace body.

According to the sixth aspect of the invention, the synergistic effects of the first, second and third aspects can be obtained. That is, the snow melting function is improved, and wastewater pollution due to incomplete combustion is prevented, and the furnace body is prevented from being overheated.

According to the seventh aspect of the present invention, the upper half of the filter wall in which a number of holes are formed is a blind plate having no holes. it can.

According to the eighth aspect of the present invention, since the closing plate closes a number of holes formed in the filter wall, exhaust gas flows out of the holes in the filter wall even when there is no water flow. Can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a snow melting apparatus according to an embodiment of the present invention.

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

FIG. 3 is a sectional view of the furnace body shown in FIG.

FIG. 4 is a perspective view of the furnace body shown in FIG.

5 is a cross-sectional view of the vicinity of the top of the furnace body shown in FIG.

FIG. 6 is a cross-sectional view illustrating an operation of the shower pipe.

FIG. 7 is a perspective view showing a main part in the snowmelt tank.

FIG. 8 is a perspective view of a dust strainer.

FIG. 9 is an exploded perspective view of a drain groove.

FIG. 10 is a sectional view of a drain groove.

FIG. 11 is a cross-sectional view showing a modified example of a drain groove.

FIG. 12 is a cross-sectional view showing another modification of the drainage ditch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Snow melting apparatus 3 Furnace body 5 Burner 7 Snow melting tank 11 Drainage groove 14 Roof 16 Bottom plate 18 Side wall 21a Upper edge 21b Lower edge 28 Hot air passage (hot air port) 31 Shower pipe (shower) 41 Top cover 41a Recess 45 Outer wall 47 Waterway 48 Dust strainer 53 Punched metal (filter wall) 56 Closure plate

Claims (8)

[Claims] 1. A combustor for supplying combustion gas, a furnace body to which combustion gas is supplied inside, a snowmelt tank containing the furnace body,
In a snow melting apparatus comprising a shower pipe provided above a furnace body and a drainage structure for discharging water collected in a snow melting tank, the furnace body comprises a roof in which plate bodies are stacked stepwise in an oblique direction. Forming a hot air passage for blowing the combustion gas in the furnace between adjacent upper and lower edges, while alternately extending the upper edge and the lower edge of the plate body outward and inward. A snow melting device characterized by: 2. A combustor for supplying combustion gas, a furnace body to which the combustion gas is supplied, a snowmelt tank containing the furnace body,
In a snow melting apparatus including a shower pipe provided above a furnace body and a drainage structure for discharging water collected in a snow melting tank, the shower pipe is arranged along a roof of the furnace body, and at least A snow melting device comprising a fountain hole for blowing water upward at an upper portion. 3. A combustor for supplying combustion gas, a furnace body to which combustion gas is supplied inside, a snowmelt tank containing the furnace body,
A snow melting apparatus comprising: a shower pipe provided above a furnace body; a pump that supplies water collected in the snow melting tank to the shower pipe; and a drainage structure that discharges water collected in the snow melting tank. Around the side wall of the furnace, an outer wall is provided at an interval from the side wall, a water path is formed between the side wall and the outer wall of the furnace body, and the pump supplies at least water from the water path to a shower pipe. Snow melting equipment. 4. The furnace body according to claim 1, further comprising a top cover having a recess formed along a longitudinal direction on a top of the roof of the furnace body, and a shower pipe being placed in the recess of the top cover. The snow melting apparatus according to any one of claims 1 to 3. 5. The snow melting apparatus according to claim 4, wherein a notch for a hot air passage is formed at a lower end of a side portion of the top cover. 6. The shower pipe is arranged along a roof of the furnace body, and has a fountain hole for blowing upward water at least at an upper part thereof, and has a gap with the side wall around the side wall of the furnace body. 2. The snow melting apparatus according to claim 1, wherein the outer wall is opened to form a water passage between a side wall of the furnace body and the outer wall, and at least water from the water passage is supplied to a shower pipe. 7. A combustor for supplying combustion gas, a furnace body to which the combustion gas is supplied, a snowmelt tank containing the furnace body,
In a snow melting apparatus including a shower pipe provided above a furnace body and a drainage structure for discharging water collected in a snowmelt tank, the drainage structure has a lid above a drainage groove, and a number of holes on a side. A snow melting device comprising a formed filter wall, wherein the filter wall is substantially blind in the upper half. 8. The snow melting apparatus according to claim 7, wherein the filter wall includes a closing plate that closes the plurality of holes when there is no running water inside the drainage structure.