JP4092451B2 - Snowmelt water heating and circulation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a snowmelt water heating and circulation device that is suitable for melting a large amount of snow removed in an urban area, a large parking lot, or the like and that is easy to install.
[0002]
[Prior art]
Conventionally, snow melting devices are roughly classified into a heat source integrated type and a heat source separated type. A heat source-integrated snow melting device includes a snow melting tank for introducing snow, a plurality of injection nozzles provided in a hot water pipe disposed in the upper part of the snow melting tank, a combustion burner installed in a machine room adjacent to the snow melting tank, It is generally composed of a circulation pump that circulates and supplies snowmelt water. It is a circulation type that heats the combustion chamber provided in the snow melting tank directly with a combustion burner, and melts the snow thrown into the combustion chamber and sprinkles the snow melt water generated from the top by a circulation pump. It is what has been.
[0003]
In addition, the heat source separation type has a tank-shaped snow melting tank with a snow inlet at the top, a plurality of spray nozzles provided in a hot water pipe disposed in the upper part of the snow melting tank, and tap water is directly heated. The heat exchanger generates hot water using an antifreeze heated by a boiler or an electric heater, and a circulating pump and hot water pipe. This heat source separation type is partially used publicly due to restrictions on cost, installation cost, installation location, etc. to increase the size, but it is difficult to disseminate in general.
[0004]
[Problems to be solved by the invention]
Most of the above-mentioned conventional technologies are for home use or for use on a sidewalk or parking lot in front of a company or store, and the amount of snow to be processed must be thrown in as much as the melting capacity. In addition, there is a drawback that time is required for the snow throwing operation, and the snow melting ability is small in relation to the amount of snow to be processed, the installation location and the price. For this reason, as a method of melting a large amount of snow removed in an urban area or a large parking lot, a plurality of snow melting devices are used side by side. There is a problem that it is not suitable for the work of putting snow by a machine.
[0005]
In view of this, a method of melting snow by heating tap water and directly spraying it on snow, or a method of melting snow by heating the antifreeze liquid and performing heat exchange to inject snow that has been warmed to melt the snow can be considered. The former not only increases water charges, but also wastes water resources. In the latter case, the cost of the heat exchange device is high and the heat efficiency is also poor. In addition, since both of them use large boilers, there are many laws and regulations, and it is not common because they need to be managed by a boiler engineer. The current boiler is not an outdoor installation type and requires the installation of a boiler warehouse. I need. The liquid to be used is either tap water or antifreeze liquid, and there are various problems in direct heating of snowmelt water, it lacks durability, management of freeze prevention is troublesome, and the equipment is complicated, expensive and generally popular There are many problems such as lack.
[0006]
The present invention has been made in view of the above-mentioned drawbacks and problems of the prior art, and can be used to melt a large amount of snow in a short time in combination with a snow melting tank. It is an object of the present invention to provide a snowmelt water heating and circulation device capable of performing the above. Moreover, it is excellent in snow melting efficiency because it directly heats the melted water without using a boiler, and because it is not subject to legal restrictions on the use of the boiler, it has excellent usability in various points such as installation and operation. To provide a snowmelt water heating and circulation device that can reliably prevent equipment damage from freezing by automatically draining from the hot water generation tank at the end of snowmelt, and can be configured in a movable package type With the goal.
[0007]
[Means for Solving the Problems]
The means of the present invention configured to solve the above-described problems includes a hot water generating tank having a heating device, a hot water supply pipe for supplying hot water heated in the hot water generating tank to the snow melting tank, and the snow melting tank. A water supply pump that supplies the snowmelt water to the hot water generation tank; and a control unit that operates the heating device according to a temperature state of the snowmelt water supplied from the snowmelt tank to the hot water generation tank. A snowmelt water heating and circulation device configured to supply hot water to the snowmelt bath by a height difference by installing it at a higher location than the bath, wherein the heating device includes a furnace provided with a burner and an outer side of the hot water generation bath A flue that is spaced apart from the furnace, and a plurality of heating pipes that are connected between the flue and the furnace while being exposed in the hot water generation tank, It is composed of
[0008]
And it is good to comprise the said warm water production | generation tank in a casing, and it is comprised by the package type which can be moved by comprising the snow-melting water inflow pipe and warm water supply pipe of this hot-water production | generation tank ground so that attachment or detachment is possible to the piping of the said snow melting tank.
[0009]
Moreover , it is good for the snowmelt water heating / circulating apparatus to have a configuration in which a hanging metal fitting for transportation and installation is provided.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an external perspective view of the snowmelt water heating and circulation device, FIG. 2 is an explanatory view showing the snowmelt water heating and circulation device together with a hot water jetting snowmelt tank 51 described later, and FIG. 3 is a longitudinal sectional view of the snowmelt water heating and circulation device. In the figure, reference numeral 1 denotes a snowmelt water heating and circulation device. Reference numeral 2 denotes a base constituting the snowmelt water heating and circulation device 1, and the base 2 is formed from U-shaped steel materials 2A, 2A,... Fixed to a concrete base A provided on the ground by bolts and nuts. The base 3 is provided with a frame 3 in which steel materials are assembled in a rectangular shape. Reference numeral 4 denotes a lifting frame. The lifting frame 4 has a pair of vertical struts 4A, 4A, 4B, and 4B that are fixed to the gantry 3 at the lower ends and are erected on both sides, and the vertical struts 4A, 4A, and 4B. 4B, 4C, 4C, and a pair of front and rear upper columns 4D, 4D installed on the upper ends of the vertical columns 4A, 4A, 4B, 4B, and a connection between the upper columns 4D, 4D. It is comprised from the support | pillars 4E and 4E, and four lifting hooks 5,5, ... are attached to the connection support | pillars 4E and 4E.
[0011]
6 shows a casing provided so as to cover the frame 4, and the casing 6 is erected along the longitudinal direction of the frame 3 before and after the rear frame plates 7 and 8 before being located at both longitudinal ends of the frame 3, One side frame plate 9 and the other side frame plate 10 provided with openings 9A and 10A that can be closed by doors 11 and 12 on one side in the longitudinal direction, and the upper side surrounded by the respective frame plates 7, 8, 9, and 10 The bottom of the roof plate 13 is open and the rear frame plate 8 is removable, and the roof plate 13 is formed with an exhaust tube insertion hole 13A. Thus, the casing 6 is configured so that it can be opened and closed by the doors 11 and 12 by providing the openings 9 and 10 on one side and the longitudinal side of the other side frame plates 9 and 10. It is possible to select that the frame plate 9 side is the front side or the other side frame plate 10 side is the front side, and there is a degree of freedom in installation and convenience in use.
[0012]
Reference numeral 14 denotes a hot water generating tank stored in the casing 6 in a state of being mounted on the gantry 3. The hot water generation tank 14 has a bottom plate 15 made of stainless steel, a front plate 16 formed with a circular burner mounting port 16A, a rear plate 17, left and right side plates 18, 19 and an exhaust tube insertion port 20A. The rear plate 17 is detachably provided for internal inspection or the like. And the warm water production tank 14 which consists of the above-mentioned structure is installed on the gantry 3 in a state inclined slightly downward about 3 degrees so that no water remains in the warm water production tank 14 when the operation is stopped. is there.
[0013]
Reference numeral 21 denotes a hot water supply pipe for supplying hot water heated in the hot water generation tank 14 to the hot water jet snow melting tank 51, and the base end side of the hot water supply pipe 21 is connected to the upper part of the front plate 16 of the hot water generation tank 14. The distal end side connection port 21A is located below the casing 6 and is disposed downward. Reference numeral 22 denotes a snowmelt water inflow pipe. The snowmelt water inflow pipe 22 has a base end side connection port 22A located at the lower end of the casing 6 and a tip connected to an opening formed in the bottom plate 15 of the hot water generation tank 14. .
[0014]
Reference numeral 23 denotes a heating device provided in the hot water generation tank 14. Reference numeral 24 denotes a furnace constituting the heating device 23. The furnace 24 includes a front end plate 24A made of a substantially elliptical steel plate, a burner insertion opening 24B formed near the lower side of the front end plate 24A, and a substantially elliptical steel plate. A rear end plate 24C, a plurality of substantially elliptical tube fitting holes 24D, 24D (see FIG. 6) formed in the rear end plate 24C, and the front end plate 24A and the rear end plate 24C. It is formed in an elliptical cylindrical shape from a body plate 24E fixed to the outer periphery, and is placed on the bottom plate 15 of the hot water generation tank 14 via support legs 25, 25.
[0015]
On the other hand, 26 is a flue arranged away from the furnace 24. The flue 26 is formed on the front end plate 26A made of a substantially elliptical steel plate formed in the same shape as the rear end plate 24C of the furnace 24, and the front end plate 26A. A number of substantially elliptical tube fitting holes 26B, a rear end plate 26C made of a flat plate formed in the same shape as the front end plate 26A, and a body plate 26D fixed to the outer periphery of the front end plate 26A and the rear end plate 26C. And an exhaust port 26E at the upper part of the body plate 26D, and a drain discharge port 26F at the center of the lower part. Reference numeral 27 denotes an exhaust pipe that communicates with the exhaust port 26E and is erected on the upper portion of the body plate 26D. The exhaust cylinder 27 is inserted into the exhaust cylinder insertion hole 13A of the casing 6 from the exhaust cylinder insertion port 20A of the hot water generation tank 14. Projecting upward. Reference numeral 28 denotes a drain discharge pipe connected to the drain discharge port 26 </ b> F. The drain discharge pipe 28 discharges condensed water in the furnace 24 to the outside of the casing 6. The flue 26 having the above-described configuration is installed on the bottom plate 15 of the hot water generation tank 14 via the support leg 29.
[0016]
30, 30,... Indicate a plurality of heating tubes that are horizontally placed between the flue 26 and the furnace 24 while being exposed in the hot water generation tank 14. Each of the heating tubes 30 is made of a stainless steel pipe in consideration of durability and is formed in an elliptical shape in order to increase heat dissipation efficiency, and one end thereof is formed on the rear end plate 24C of the furnace 24. The other end of the tube fitting hole 24D is fitted into a tube fitting hole 26B formed in the front end plate 26 of the flue 26.
[0017]
Further, 31 denotes a kerosene burner provided in the furnace 24 located in the casing 6, and the nozzle 31A of the kerosene burner 31 protrudes into the hot water generation tank 14 through the burner mounting port 16A, and from the burner insertion hole 24B. By opening in the furnace 24, the combustion gas is ejected into the furnace 24.
[0018]
Reference numeral 32 denotes a pump for supplying snow melt water from the hot water jet-type snow melting tank 51 to the hot water generating tank 14, and the pump 32 is covered with a mesh cover 32A for preventing inhalation of garbage. It is arranged on the bottom side in the type snow melting tank 51. Further, a snowmelt water feed pipe 33 is connected to the pumping pump 32, and the tip of the snowmelt water feed pipe 33 is detachably connected to the connection port 22A of the snowmelt water inflow pipe 22.
[0019]
Reference numeral 34 denotes a control panel attached to the inner surface of the one-side door 8 of the casing 6. The control panel 34 has an operation panel, a microcomputer and a timer in which operation switches of the main power switch of the device, the pumping pump 32 and the kerosene burner 31 are arranged. Is equipped with a control unit, a power lamp, an operation lamp and a combustion lamp, an abnormality alarm buzzer, a reset switch and the like. Reference numeral 35 denotes a snow melting thermistor located in the vicinity of the connection port 22A and provided in the snow melting water inflow pipe 22 and connected to the control unit by a signal line. The snow melting thermistor 35 detects the temperature of the snow melting water flowing into the hot water generating tank 14, and the controller starts the kerosene burner 31 when the detected temperature of the snow melting water is 7 ° C. or lower, and is 15 ° C. or higher. In this case, control for stopping the combustion of the kerosene burner 31 is performed.
[0020]
Reference numeral 36 denotes a heat exchange thermistor as a safety device provided in the hot water supply pipe 21 at the upper part of the hot water generation tank 14. When the temperature of the hot water detected by the heat exchanger thermistor 36 has reached 36 ° C., the control unit determines that there is some abnormality and monitors it, and when the temperature of the hot water reaches 40 ° C., the kerosene burner 31 Control is performed to stop the combustion.
[0021]
37 is a water level detector for detecting the full water state in the hot water generating tank 14, and the controller operates the kerosene burner 31 based on the full water symbol of the water level detector 37, so that the kerosene burner 31 is in a state where the amount of water is insufficient. It is designed to prevent operation. Further, a high-limit temperature sensor 38 is provided in the hot water generation tank 14 as a safety device. When the high-limit temperature sensor 38 detects that the temperature of the hot water has reached 60 ° C., a control unit is activated by a signal from the sensor 38. However, the operation of the kerosene burner 31 is stopped to prevent idling.
[0022]
Note that 39 is an intake valve provided at the upper end of the hot water supply pipe 21, and the intake valve 39 automatically discharges the hot water in the hot water generating tank 14 to the hot water jetting snow melting tank 51 side upon completion of the snow melting work. In addition, the hot water generation tank 14 is an open type structure that allows the atmosphere to flow into the hot water generation tank 14. Reference numeral 40 is a relief valve provided in the hot water generation tank 14, and 41 is a seismic switch installed in the hot water generation tank 14. When a seismic intensity above a certain level is detected, the operation of the apparatus is stopped. Reference numeral 42 denotes a rotation warning light installed on a cover 53A of a hydraulic device 53 to be described later in order to warn during operation.
[0023]
Furthermore, the hot water jet-type snow-melting tank 51 used together with the above-described snow-melting water heating and circulating apparatus 1 will be described. 52 is a tank body constituting the hot water jetting snow melting tank 51. The tank body 52 is formed of a rust-proof steel plate or stainless steel, and a snow inlet 52A above the tank body 52 is hydraulic. The lid 53 (not shown) operated by the device 53 can be opened and closed. The hydraulic device 53 is mounted on the hot water generation tank 14 and is integrally covered with the casing 6 by a cover 53A. 54 is an ejection pipe disposed in the upper part of the tank body 52, and the ejection pipe 54 is provided with a plurality of ejection nozzles 55, 55,. A hot water inflow pipe 56 is connected to the ejection pipe 54, and the tip of the hot water inflow pipe 56 is detachably connected to the connection port 21 </ b> A of the hot water supply pipe 21. Reference numeral 57 denotes a drainage pump installed in the tank body 52. The drainage pump 57 is configured to discharge excess snow melt water to the drainage groove 60 through the water distribution pipe 59 when the liquid level switch 58 is operated.
[0024]
Thus, the hot water generation tank 14, the hot water supply pipe 21, the ejection pipe 54, the injection nozzle 55, the tank body 52, the pumping pump 32, the snowmelt water feed pipe 33, and the snowmelt water inflow pipe 22, and the hot water generation tank 14 and the hot water ejection type snowmelt tank 51. A circulation channel is formed between the two. The hot water generating tank 14 is higher than the hot water jetting snow melting tank 51 by burying the hot water blowing snow melting tank 51 in the ground or by using the height difference of the site, and further by using an installation table. At the end of the snowmelt operation, the hot water and snowmelt water in the circulation channel flows out of the hot water generation tank 14 to the hot water jetting snowmelt tank 51 due to the difference in height without using the power of the drainage pump or the like. I have to do it.
[0025]
Although the present embodiment has the above-described configuration, the operation thereof will be described next. First, when the power switch and the operation switch are turned ON, the pumping pump 32 is started, and the melted water is drawn up from the hot water jetting type snow melting tank 51 and supplied to the hot water generating tank 14. When the temperature of snowmelt water detected by the snowmelt thermistor 35 is 7 ° C. or less and the water level detector 37 detects that the hot water generation tank 14 is full, the kerosene burner 31 is ignited by a command from the control unit. When the heating device 23 is started and the snowmelt water in the hot water generation tank 14 comes into contact with the furnace 24, the heating pipe 30 and the flue 26, the snowmelt water is heated and becomes hot water.
[0026]
In the present embodiment, the temperature of the hot water sprayed into the hot water ejection type snow melting tank 51 is about 29 ° C. The temperature of the hot water is set as follows. That is, the amount of water stored in the hot water generation tank 14 when the water is full is naturally constant, and the amount of heat generated by the heating device 23 is also constant during the steady operation of the kerosene burner 31, so the amount of snowmelt water supplied from the pump 32 is a predetermined value. In this way, the snowmelt water is heated to a desired temperature in the hot water generation tank 14. In this way, the temperature control (setting) of the hot water does not use devices such as a temperature sensor and a flow control valve, so that the configuration is simple and problems unique to cold regions such as freezing of the control valve can be solved. .
[0027]
As described above, the hot water generated in the hot water generation tank 14 is sent from the hot water supply pipe 21 to the ejection pipe 54 via the hot water inflow pipe 56, and ejected from each injection nozzle 55 to be input snow in the tank main body 51. To melt. In this way, the supply of the snowmelt water to the hot water generation tank 14 between the hot water jet snow melting tank 51 and the hot water generation tank 14, the generation of hot water by heating the snow melting water, the hot water to the hot water jet type snow melting tank 51. The snow melting action of melting snow by supply and hot water is performed. When the water level in the tank body 52 rises to a certain level, the drain pump 57 is actuated by a signal from the liquid level switch 58 and the excess water is discharged into the external discharge groove 60.
[0028]
Then, when the introduction of snow into the tank body 52 is completed with the completion of the snow removal work, the operation of the kerosene burner 31 and the pumping pump 31 is stopped. As a result, the hot water in the hot water generation tank 14 is transferred from the hot water supply pipe 21 through the hot water inflow pipe 56 and the injection nozzle 55 and from the snow melt water inflow pipe 22 through the snow melt water feed pipe 33 and the pumping pump 32 according to the height difference. As a result of being discharged into the main body 52, no water remains in the hot water generation tank 14 and the pipes 21, 22, 23, 56. At this time, foreign matters flowing into the pipes 21, 56, 33, 22 and the pumping pump 35 are removed together with the drainage, so that the situation where the circulation flow path is clogged can be solved. Further, the snow remaining in the tank body 52 is also melted by the discharged hot water.
[0029]
【The invention's effect】
Since the present invention is configured as described in detail above, the following effects are obtained.
(1) Since the snowmelt water heating and circulating apparatus directly heats the snowmelt water using a heating apparatus without using a boiler, it has excellent snowmelt efficiency and can melt a large amount of snow. In addition, since it is not subject to legal restrictions on the use of boilers, it has excellent usability in various points such as installation and operation.
( 2 ) The hot water generation tank having a heating device is easy to handle because it is not subject to the boiler method requiring management by a qualified person. In addition, since outdoor installation is possible, an appropriate installation location can be selected.
( 3 ) Snowmelt water is supplied by using a water pump, hot water is supplied by elevation, and the circulation flow path is not provided with an on-off valve, so it is easy to operate. Since there is almost no failure, it is highly reliable. In addition, the manufacturing cost of the entire apparatus can be greatly reduced as compared with the case of using an original boiler.
(4) The hot water generation tank is installed at a higher position than the snow melting tank, and the hot water in the hot water generation tank and the pipe line is discharged to the snow melting tank due to the difference in height as the water pump that stops the snow melting work is stopped. As a result, no foreign matters remain in the circulation path, and clogging can be prevented. Further, it is possible to eliminate the situation where the residual water freezes and damages the equipment connected to the circulation flow path, and the warm-up operation for preventing freezing is unnecessary.
( 5 ) The hot water generation tank is housed in a casing, and the snow melt water inflow pipe and the hot water supply pipe of the hot water generation layer are configured to be detachable from the pipe of the snow melt tank to form a package type so that the movable snow melt water can be heated. It can be used as a circulation device.
( 6 ) By providing the hanging metal fittings, it can be used as a snowmelt water heating and circulation device that can be transported and installed freely.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a snowmelt water heating and circulating apparatus according to an embodiment of the present invention.
FIG. 2 is an overall configuration diagram showing a snow melting water heating and circulation device together with a hot water jetting type snow melting tank.
FIG. 3 is a longitudinal sectional view showing the internal configuration of the snowmelt water heating and circulating apparatus.
FIG. 4 is a plan view showing the internal configuration of the snowmelt water heating and circulating apparatus.
5 is a cross-sectional view in the direction of arrows VV in FIG.
FIG. 6 is a front view of a rear end plate constituting the heating device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Snowmelt water circulation apparatus 5 Hoisting hook 6 Casing 14 Hot water production tank 21 Hot water supply pipe 22 Snowmelt water inflow pipe 23 Heating device 24 Furnace 26 Flue 27 Exhaust pipe 30 Heating pipe 31 Kerosene burner 32 Pumping pump 51 Hot water ejection type snow melting tank

Claims (3)

A hot water generating tank having a heating device, a hot water supply pipe for supplying hot water heated in the hot water generating tank to the snow melting tank, a water supply pump for supplying snow melting water from the snow melting tank to the hot water generating tank, and the snow melting tank And a controller that operates the heating device according to a temperature state of the snowmelt water supplied to the hot water generation tank, and the hot water generation tank is installed at a higher position than the snow melting tank, so that the hot water is changed to a snow melting tank by a height difference. A snowmelt water heating and circulation device configured to supply, wherein the heating device has a furnace provided with a burner, and an exhaust pipe projecting outside the hot water generation tank, and is disposed apart from the furnace. a flue that is, meltwater heating circulator you characterized in that are composed of a heating tube of the plurality of which are connected between the flue and the furnace in a state of being exposed to the hot water generating tank . The hot water generation tank is housed in a casing, and the snow melting water inflow pipe and the hot water supply pipe of the hot water generation tank are configured to be detachable from the piping of the snow melting tank so as to be configured in a movable package type. The snowmelt water heating and circulating apparatus according to claim 1 . Snowmelt heating circulation apparatus according to claim 1, wherein the hanger for transporting and installation are provided.

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