JP3654670B2 - Snow melting machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a snow melting machine that can be used in heavy snowfall areas.
[0002]
[Prior art]
The prior art is shown in FIG. In the prior art, the introduced snow 3 is melted by the heat exchanger 2 provided at the bottom of the snow melting tank 1. In the snow melting tank 1, the melted snow 3 is changed to water, and the increased amount of water is drained from the upper part 4 of the snow melting tank 1 through the drain pipe so that a constant water level is maintained.
[0003]
In this case, the water layer close to the water surface is warm water, and when the temperature thereof is t ₀ , the warm water whose temperature has risen to t ₀ is discarded. Discarding hot water results in discarding precious heat energy, and accordingly, it is necessary to supply extra heat energy to the heat exchanger 2.
[0004]
In this case, it is necessary to raise the entire water in the snow melting tank 1 to the temperature t ₀ with the heat exchanger 2, and it takes a considerable time to rise.
[0005]
Of the hot water in the snow melting tank 1, the hot water acting on the snow melt is warm water near the water surface where the snow can be put, and the hot water near the bottom does not melt the snow and just repeats convection and loses heat energy accordingly. .
[0006]
Since the heat exchanger 2 such as a heater is disposed at the bottom, the capacity of the snow melting tank 1 is increased, and much heat escapes from the surface of the snow melting tank 1.
[0007]
Further, since the amount of water stretched in the snow melting tank 1 is increased, the weight of the water is added, and it is difficult to move the snow melting tank 1.
[0008]
[Problems to be solved by the invention]
Prior art snow melters take a long time to operate, require a large amount of heat energy to escape, have poor heat efficiency and require a large heat source, increase the size of the device itself, and increase the amount of water required for hot water It was not possible to move to a city where snow melting was necessary.
[0009]
[Means for Solving the Problems]
Basically, a heat exchanger is placed in the water near the surface of the snow-melting tank containing water, and a heat storage plate with a number of vertical holes for distribution is placed in the water above the heat exchanger. A high-temperature water melting unit that forms a high-temperature water part that melts snow in the upper layer of the snow-melting tank by arranging a protective net in the upper layer of the water, and by applying an evaporation inhibitor film on the surface of the water. Realized.
[0010]
[Action]
Yet high cold gravity cold water immediately after snow melting is faster than would the hot water by the heat, warm and thin snow melting tank missing drops cold water portion of the bottom of the water tank, the cold water has fallen this way the water tank Drain from the bottom.
[0011]
Since the drained water is cold water, the rate of releasing thermal energy is much less than draining warm water of the prior art.
[0012]
【Example】
FIG. 2 shows a first embodiment of the present invention. Water is put in the snow melting tank 1 in advance.
[0013]
The heat exchanger 2 is installed in the water near the water surface above the snow melting tank 1. Part of the snow 3 to be thrown in is melted by the action of hot water above the heat storage plate 7. The upper water forms a high-temperature water near the water surface. The temperature of the high-temperature water portion is lowered as it goes down from the heat exchanger 2 to the bottom (however, as will be described later, a number of vertical holes are formed in the heat storage plate 7, and the cold water immediately after melting snow passes through these Further, as will be described later, the heat exchanger 2 is constituted by a vertical heater so as not to obstruct the snowmelt water flowing downward.
[0014]
Although the thickness of the high-temperature water portion at the top of the heat storage plate 7 is drawn as having a thickness for the sake of explanation in the drawings, it is actually a thin layer of a dissolved layer of about several centimeters and formed in this. Snowmelt water has a specific gravity higher than that of hot water immediately after snowmelt, passes through the dissolved layer of the high-temperature water section at the top of the heat storage plate 7, passes through the vertical hole of the heat storage plate 7, and creates a flow below and falls downward. (4 ° C cold water is the heaviest).
[0015]
Fill the drain pipes a and b with water and let them touch the atmosphere at c. First, set the water surface height h ₂ to fill the drain pipes a and b to the same water surface height h ₁ of the snowmelt tank 1. If this is the case, the cold water is drained through the drain pipes a and b as much as the water level increased by melting the snow, and the water level of the snow melting tank 1 is always kept at the height of c. The cold water overflowing from c can also be led to an external drainage groove (not shown) using the drain pipe d.
[0016]
The low-temperature water part (cold water part) of the snow melting tank 1 has a large area for directly melting snow because it only needs to have a capacity for temporarily stopping a mass of fine cold water having a high specific gravity immediately after snow melting falling from above. The shape may be smaller than the upper part of the snow melting tank 1 required, and it is preferable to have a tapered shape.
[0017]
The point of the present invention is that the snow melting function part is disposed near the water surface above the water tank. In the present invention, the snow that has been directly melted is melted immediately after the snow melting becomes hot and does not become light. Because it is a small mass of cold water with high specific gravity, the principle of falling naturally with its weight is adopted, so it is in an operating state compared to the conventional type with a heater placed at the bottom of the water tank The rise time to become short, it is not necessary to heat a large amount of water filling the lower part of the aquarium, it is possible to use limited heat effectively without considering the heat escaping from the surface of that part of the aquarium Technical benefits arise.
[0018]
The configuration of the snow melting layer 1 at the heart of the present invention will be described in detail. FIG. 3 shows the structure. The snow melting layer includes an evaporation inhibitor film 5, a thin dissolved layer of high-temperature water, a snow melting layer protective net (protective net) 6, a heat storage plate 7, and a heat exchanger 2. The evaporation inhibitor is a mineral oil that is used as the water surface film 5 to prevent water evaporation and escape of evaporation energy.
[0019]
The protective net 6 is a mesh or the like that prevents damage to the lower appliance except for stones and dust.
[0020]
The heat storage plate 7 is made of iron grating or the like in order to keep the rectified state of the cold water immediately after melting snow falling through the vertical hole.
[0021]
In some vertical holes of the heat storage plate 7, cold water having a high specific gravity immediately after melting snow is passed downward, but in other vertical holes, high-temperature water having a low specific gravity near the heat exchange 2 is raised. Through these vertical holes, in the water layer on the heat storage plate 7, a recirculating upper layer flow is generated between the descending water and the rising water, and this flow is used to send the cold water immediately after the snow melting to the lower part of the snow melting tank 1. Acts effectively.
[0022]
The heat exchanger 2 has a vertical structure in order not to disturb the passage of the cold water immediately after the melting of the snow without disturbing it, and to supply high temperature water to the upper part, and is heated by a hot water boiler. Is controlled.
[0023]
The form of the heat exchanger 2 is shown in FIG.
[0024]
With reference to FIG. 5, the introduction and removal of the evaporation inhibitor will be described.
(1) During injection (Fig. A)
In the upper part of the separation tank, the mineral oil to be injected is separated from water and confined in the upper part. Here, the valve 6 is opened. Mineral oil is pushed out by the pressure of water containing water into the small tank on the right side of the figure, and a film 5 is stretched on the water surface of the snow melting tank 1.
(2) During collection (Figure b)
The valve 2 is opened, tap water is injected, the water level of the snow melting tank 1 is raised by the pressure of the water pressure, the valve 6 is opened, and the mineral oil floating on the water surface of the snow melting tank 1 is put into the separation tank. Mineral oil may enter the small tank on the right side of the figure as shown in the figure.
(3) During reuse (Fig. C)
Open the valve 4, drain the water in the snow melting tank 1 a little, open the valve 6 with the water level lowered, and melt the recovered mineral oil in the same way as in the case of injection in Fig. (A). Put in the tank.
[0025]
FIG. 6 shows an overall view of the evaporation inhibitor injection and recovery apparatus.
[0026]
FIG. 6 is a summary of FIGS. 5 (a), (b), and (c).
[0027]
The present invention will be further described with reference to FIGS.
[0028]
As described above, the snow melting layer is formed of the dissolution layer, the evaporation inhibitor film 5, the protective net 6, the storage plate 7, and the heat exchanger 2 (in FIG. Part marked with).
[0029]
In the snowmelt layer, cold water that has a high specific gravity immediately after melting and tends to descend must be naturally lowered to the low temperature water part quickly before it becomes warm water.
[0030]
For this purpose, the melted layer must be thin and at the same time disturbed when throwing snow.
[0031]
The point is to maintain a state in which the cold water immediately after the melting of the snow is likely to fall in the snow melting layer, and this is made possible by the heat storage plate 7 and the protection net 6 formed with a number of vertical holes.
[0032]
Between the heat storage plate 7 and the protection net 6 or in the vertical hole of the heat storage plate 7, the turbulence in the water when the snow block is thrown in becomes smaller and rectifies, helping the descent of the cold water immediately after melting the snow.
[0033]
Even if the water surface of the snow melting tank 1 is covered with the introduced snow 3, the snow melts gently by the heat supplied from below, and it is effective even if the operation is performed in a state where the input shock is not transmitted to the melting layer.
[0034]
In the snow melting machine, wheels or sleds or the like that make it movable are attached to the lower part of the apparatus so that the general public can easily use it.
[0035]
FIG. 7 shows a second embodiment of the present invention.
[0036]
The water tank portion of the snow melting tank 1 has a tapered shape in which a cross-sectional shape has one side as a vertical line and a line facing it as a diagonal line.
[0037]
An upper container 10 that covers the water surface is integrally formed on the upper part of the snow melting tank 1.
[0038]
A snow-absorbing fan 8 and a snow-absorbing duct hose 9 are attached to the upper container 10.
[0039]
The principle of snow melting is the same as that of the first embodiment, and the heat of the snow melting layer formed by the heat exchanger 2 and the like near the water surface of the snow melting tank 1 is applied to the cold water having a high specific gravity immediately after the snow melting. Before getting hot water, it is lowered to the bottom.
[0040]
The amount of water increased by melting the snow rises through the drainage pipes a and b at the bottom, and is drained to the outside by the Pascal principle from the tip c of the pipe opened in the atmosphere. Keep the water level constant.
[0041]
In FIG. 8, the whole snow melting tank 1 of this invention is shown in three dimensions. Inside the snow melting tank 1, a protective net 6, a heat storage plate 7, and a heat exchanger 2 are set as shown.
[0042]
FIG. 9 shows the entire apparatus of the present invention in three dimensions. The device is mounted on a stand with a wheel for easy movement.
[0043]
【The invention's effect】
In the present invention, since the snow melting layer is provided near the water surface, the time required for startup for operation can be shortened without heating the entire snow melting tank, and the loss of heat energy is small. Moreover, the amount of water put into the snow melting tank can be reduced.
[0044]
In the present invention, since the evaporation inhibitor film is formed on the water surface, it is possible to prevent heat from escaping from the water surface as steam.
[0045]
Since the drainage is cold water, the heat loss is much less than the conventional one that discharges hot water.
[0046]
Chilled water that is thrown away has a natural temperature and has less impact on the biological environment than when throwing away conventional warm water.
[0047]
In the present invention, since the evaporation inhibitor is recovered and reused, the environment is not polluted.
[0048]
Since the present invention is attached to a movable instrument, it can be easily used by ordinary people.
[Brief description of the drawings]
FIG. 1 is a diagram showing an outline of a conventional snow melting machine.
FIG. 2 is a diagram illustrating a first embodiment of the present invention.
FIG. 3 is a diagram showing a configuration of a snow melting layer of the present invention.
FIG. 4 is a diagram showing the shape of the heat exchanger of the present invention.
FIG. 5 is a diagram showing the collection and injection of an evaporation inhibitor according to the present invention.
FIG. 6 is an overall view showing the collection and injection of an evaporation inhibitor according to the present invention.
FIG. 7 is a diagram for explaining a second embodiment of the present invention.
FIG. 8 is a three-dimensional view showing the entire snow melting tank of the present invention.
FIG. 9 is a three-dimensional view showing the entire apparatus of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Snow melting tank 2 Heat exchanger 3 Snow 4 Heat source machine 5 Evaporation inhibitor film 6 Protection net 7 Heat storage plate 8 Pressure fan 9 Snow absorption duct hose 10 Upper container

Claims (8)

In a snow melting machine comprising a snow melting tank containing water, a heat storage plate installed below the surface of the water, a heat exchanger installed below the heat storage plate, and a drain opening provided at the bottom of the snow melting tank,
The heat storage plate forms a number of vertical holes that serve as flow paths, the heat exchanger is a vertical type, and the water outlet has a water level in the snowmelt tank despite water increase, A snowmelter that drains to a constant level by applying the principle of Pascal.   2. The snow melting machine according to claim 1, wherein a cross sectional shape of all or part of the snow melting tank is tapered in the vertical direction. 3. The snow melting according to claim 1, wherein the heat exchanger is not located immediately below the mouth below the vertical hole of the heat storage plate even if the installation location is below the heat storage plate. Machine.   The snow melting machine according to claim 1, wherein a protective net is disposed on the upper surface of the heat storage plate.   5. A snow melting machine according to claim 1, wherein a film of an evaporation inhibitor such as mineral oil is formed on the water surface.   The snow melting machine according to claim 5, further comprising an injection / recovery device for an evaporation inhibitor such as mineral oil.   The snow melting machine according to claim 1, wherein a water temperature gauge is provided in the water of the snow melting tank.   The snow melting machine according to claim 1, wherein a wheel or a sled is attached as the moving means.

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