JP3958469B2 - Snow melting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an embedded snow melting device.
[0002]
[Prior art]
Conventionally, a snow melting tank provided with a lid that can be opened and closed in the upper opening is embedded in the ground, and a snow melting cylinder provided with a burner device and an operation section in the tank, and a pump for draining snow melting water are accommodated. There is a buried snow melting device.
[0003]
In such a snow melting device, when the snow is poured into the snow melting tank, the burner device ignites and heats the snow melting cylinder, and the snow melts by the heat of the snow melting cylinder. Is done.
[0004]
[Problems to be solved by the invention]
However, the conventional snow melting device having the above configuration still has the following problems.
[0005]
In other words, since the snow melting device is used only in winter, it has been buried in the ground for almost half a year.
[0006]
Therefore, the burner unit's fan rusts while left in a damp ground for a long period of time, causing a problem that the fan motor is locked and the snow cannot be melted because the fan motor is locked. There was a thing.
[0007]
The object of the present invention is to provide a snow melting device that can solve the above-mentioned problems.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems , in the present invention, a snow melting tube in which a snow melting cylinder provided with a burner device and a drainage pump for forcibly draining snow melting water to the outside of the tank are disposed in a snow melting tank buried in the ground. In the apparatus, when the open / close lid provided in the snow melting tank is closed, the fan motor of the burner apparatus is controlled to rotate for a predetermined time every predetermined time, and the fan motor (FM) is rotated for a predetermined time. Before or after, phase control was performed on the fan motor (FM) to make the motor coil function as a heater .
[0009]
Therefore, it is effective to prevent rust by rotating it regularly, and it can be started up and used smoothly for the next use after a long snow season. Even when used in places, the moisture and ice adhering to the fan motor can be periodically evaporated, so the rust prevention effect is enhanced.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The snow melting device according to the present invention is a snow melting device in which a snow melting cylinder provided with a burner device and a drain pump for forcibly draining the snow melting water to the outside of the bath are disposed in the snow melting bath buried in the ground. When the open / close lid provided in the snow melting tank is closed, the fan motor of the burner device is controlled to rotate for a predetermined time every predetermined time.
[0011]
That is, the snow melting tank is divided into a snow melting chamber that houses and arranges a snow melting cylinder and a pump chamber that houses and arranges a drainage pump, and has a box shape with an upper opening provided with an open / close lid. Communication with the pump room enables the snow melt water from the snow melting room to be stored in the pump room.
[0012]
The snow melting cylinder is provided with a burner device provided with a fan driven by a fan motor so that the snow thrown into the snow melting chamber is quickly melted.
[0013]
In addition, a limit switch or the like is provided on the open / close lid so that an open / close signal can be output, and a control unit including a CPU, a memory, and a timer is provided as a control unit. When the control unit and the limit switch and the burner device are electrically connected and the open / close lid provided in the snow melting tank is closed, the fan motor of the burner device is driven to rotate, for example, for one minute every 24 hours, for example. Is to control.
[0014]
Therefore, it is possible to prevent rust by rotating the fan motor regularly every day even when the burner unit is not used, and start the snow melting unit when the snow season ends and it is used next time for a long time. And can be used smoothly.
[0015]
In addition, when installing a snow melting device in a cold region where the humidity is particularly high, before or after the above-described control, that is, before or after rotating the fan motor, Phase control can be performed on the motor coil so that the motor coil functions as a heater.
[0016]
In other words, by performing AC phase control with a portion of the AC waveform cut away, the fan motor is not driven to rotate, but the motor coil functions as a heater as if it were a resistor and attached to the fan motor. It evaporates water and ice.
[0017]
In addition, it is desirable to attach a heater to the substrate of the control unit so that the control unit operates normally even in severe cold, for example, it is turned on at −10 ° C. or less by a detection signal of a separately provided temperature sensor, -It should be turned off at 3 ° C or higher.
[0018]
【Example】
Embodiments of the present invention will be specifically described below with reference to the drawings.
[0019]
1 to 3 show a snow melting device A according to this embodiment.
[0020]
The snow melting device A accommodates and arranges a snow melting portion 2 and a drainage portion 3 for draining the snow melted in the snow melting portion 2 in a snow melting tank 1 buried in the ground, and in a general house in a cold district or the like. The snow piled up in the garden is thrown into the snow melting tank 1 to forcibly melt it, and the snow melting water is drained into a sewer to enable snow removal.
[0021]
First, the overall configuration of the snow melting tank 1 will be described.
[0022]
The snow melting tank 1 according to the present embodiment is made of metal and, as shown in the figure, is formed in a substantially rectangular box with an upper opening, and the one short side of the bottom surface 10 is dropped downward to form a pump chamber. 14 is formed.
[0023]
That is, the snow melting tank 1 is formed so that the bottom surface 10 has a downward slope from one short side to the other short side, and the bottom surface 10 is spaced from the short side by a certain distance. The first partition wall 4 is erected, and the second partition wall 5 is erected at the boundary edge with the pump chamber 14 on the other short side, and the first and second partition walls 4 are provided. , 5, the interior of the snow melting tank 1 is partitioned into a first chamber 11, a second chamber 12, and a third chamber 13, and the pump chamber 14 is provided in a downward projecting manner in the lower portion of the third chamber 13. . Reference numerals 11c and 13c denote inner lids provided on the upper portions of the first chamber 11 and the third chamber 13 (see FIG. 2).
[0024]
As shown in FIGS. 1 and 3, the third chamber 13 is divided into a front space 13a and a rear space 13b by a third partition wall 7, and the front space 13a and the pump chamber 14 are separated from each other by a snow melting tank 1. The rear space 13b and the pump chamber 14 are in direct communication with each other by notching the bottom surface 10 of the snow melting tank 1, while communicating with each other through a communication hole 6 provided in the bottom surface 10 of the snow melting tank. Reference numeral 60 denotes a strainer disposed in the communication hole.
[0025]
Further, the second partition wall 5 is provided with a rectangular opening 50 and a rectangular opening 51, and the second chamber 12 and the front space 13a forming a snow melting chamber in which a snow melting cylinder 20 described later is disposed are formed into the rectangular opening 50. The second chamber 12 (snow melting chamber) and the rear space 13b are communicated with each other through the rectangular opening 51. Reference numeral 50a denotes a lattice attached to the rectangular opening 50, and 51a denotes a punching metal attached to the rectangular opening 51.
[0026]
Therefore, between the second chamber 12 serving as a snow melting chamber for generating snow melting water and the pump chamber 14, the second chamber 12 → the rectangular opening 50 → the front space 13a → the communication hole 6 (strainer 60) → the pump chamber 14 The second flow path R1 and the second chamber 12 → the rectangular opening 51 → the rear space 13b → the pump chamber 14 and the sub flow path R2 are formed (see FIG. 1).
[0027]
In addition, an L-shaped flange 15 is provided around the upper peripheral side of the snow melting tank 1 so that the lower part of the flange 15 can be buried in the ground, and the length of the upper opening 16 of the snow melting tank 1 is further increased. On the edge side, an openable / closable lid 17 is attached. Reference numeral 17 a denotes a handle (FIG. 1) provided on the front edge of the opening / closing lid 17, and 17 b denotes a hinge portion of the opening / closing lid 17, which is attached to the flange 15.
[0028]
As shown in FIG. 1, a damper device 8 is interposed between the open / close lid 17 and the snow melting tank 1 so that the open / close lid 17 can be easily opened and closed. Standing posture can be maintained. The damper device 8 is disposed in a damper cover 17c connected to the end of the opening / closing lid 17 on the first chamber 11 side so that snow thrown in when the lid is opened does not contact the damper device 8. Reference numeral 17d denotes a stopper that restricts the opening / closing lid 17 from falling backward from the vertical position.
[0029]
Next, the snow melting part 2 will be described.
[0030]
As shown in FIGS. 1 to 3, the snow melting section 2 includes a snow melting cylinder 20 comprising a rectangular body portion 20 a and a roof portion 20 b having a substantially triangular shape in a side view, in a second chamber 12 serving as a snow melting chamber. In addition, a burner device 21 provided with a burner fan F and a fan motor FM is connected to one end face of the snow melting tube 20 via the first partition wall 4. That is, the burner device 21 is disposed in the first chamber 11 of the snow melting tank 1 described above.
[0031]
Next, the drainage unit 3 will be described.
[0032]
As shown in FIGS. 1 to 3, the drainage unit 3 is provided with a drainage pump 30 in the pump chamber 14 and extends a drainage pipe 31 upward from the pump 30 and penetrates the side wall of the snow melting tank 1 from the middle. Thus, the tip 31a is exposed to the outside, and snow melting can be forcibly drained into sewage.
[0033]
Further, in the pump chamber 14, in addition to the drainage pump 30, a water level detection means B comprising an electrode-type water level sensor for detecting the water level of the snowmelt water and a float switch, A shower pump 23 is provided to expel snow melting by ejecting from the top.
[0034]
As shown in FIGS. 2 and 3, a natural drainage port 32 is continuously provided on the front space 13a side of the third chamber of the snow melting tank 1, and a rectangular opening 50 is formed from the second chamber 12 serving as the snow melting chamber. A part of the snow melt flowing into the front space 13a through the natural drainage port 32 is drained to the outside. On the other hand, most of the melted water in the front space 13a is filtered through the strainer 60 and collected in the pump chamber 14, and is forcedly drained by the drain pump 30.
[0035]
The operation of the snow melting device A having the above-described configuration is performed by the control unit C. The control unit C is configured by housing a control board having a CPU, a memory, a timer and the like in the control box C1, and FIG. As shown in FIG. 1, the snow melting tank 1 is disposed in the first chamber 11.
[0036]
As shown in FIG. 4, the control unit C includes a temperature sensor TS that detects the atmospheric temperature in the ground, a snow sensor S that detects the introduction of snow, the water level detection means B in the pump chamber 14, and an open / close A limit switch LS for detecting opening / closing of the lid 17 and an emergency stop switch ES are communicated.
[0037]
The temperature sensor TS is attached to the casing of the burner fan F, the snow sensor S is attached to the first chamber 11 and the second chamber 12 of the snow melting tank 1, and the water level detecting means B is attached to the pump chamber 14. Yes.
[0038]
Further, the limit switch LS is attached to the inner surface of one side of the first chamber 11, and the emergency stop switch ES is attached to the front side of the rear surface of the opening / closing lid 17.
[0039]
The snow melting device A can drive the burner device 21 based on detection signals from the snow sensor S and the limit switch LS, and the snow sensor S and the limit switch LS will be described below.
[0040]
As shown in FIG. 3, the snow sensor S includes a pedal portion S1 that receives the introduced snow, and is configured to be switched on when the pedal portion S1 rotates downward due to the weight of snow. The control unit C receives this on signal, the burner device 21 is ignited, and combustion is continued unless the on signal disappears.
[0041]
Further, the limit switch LS senses the opening / closing of the opening / closing lid 17 and can drive / stop the burner fan F, the shower pump 23 and the drainage pump 30 described above. When the open / close lid 17 is closed, the switch C is turned off. By the on / off signal, the control unit C turns on / off the burner fan F and the burner device 21 itself, as well as the shower pump 23 and the drainage pump 30 described above. I try to turn it off.
[0042]
That is, in the normal snow melting work in the snow melting apparatus A according to the present embodiment, the open / close lid 17 is opened, the limit switch LS is turned on and the burner fan F is driven to enter the standby state, and the snow sensor S turns on the snow. When detected, the burner device 21 is ignited to start snow melting, when there is no snow in the pedal portion S1 of the snow sensor S, and when the opening / closing lid 17 is closed and the limit switch LS is turned off, the burner device 21 including the burner fan F is stopped. At the same time, the driving of the entire apparatus is stopped.
[0043]
In addition, the emergency stop switch ES provided for emergency use is a push button type. When this switch is operated, it becomes the same as when the open / close lid 17 is closed and the limit switch LS is turned off. Can be stopped. Therefore, by operating the switch ES, even if a pet or other small animal falls into the snow melting tank 1 during the snow melting work, it can be quickly rescued.
[0044]
In the snow melting apparatus A configured as described above, the gist of the present invention is that when the open / close lid 17 provided in the snow melting tank 1 is closed, the fan motor FM of the burner apparatus 21 is driven to rotate for a predetermined time every predetermined time. It is to be controlled like this.
[0045]
That is, since the snow melting apparatus A is used only during the snowfall period, it is in a state where it is buried in the ground for approximately half a year. Therefore, if left in a damp ground for a long time, the burner fan F of the burner device 21 may be rusted and the fan motor FM may be locked. In this embodiment, in order to prevent this, After the opening / closing lid 17 is closed, the control unit C starts timing and controls the fan motor FM to rotate for one minute every 24 hours to prevent rusting and fan lock.
[0046]
Further, in this embodiment, in order to further enhance the rust prevention effect, the fan motor FM is rotationally driven for a certain time, and then the phase control is performed on the fan motor FM so that the motor coil functions as a heater.
[0047]
That is, as shown in FIG. 5, the current from the commercial power source supplied to the fan motor FM is AC phase controlled, and the current is instantaneously supplied at a certain time (hatched portion), and the fan motor FM is not driven. In addition, the motor coil is used as a heater by generating heat as a resistor. This energization time subjected to phase control is set to 1 minute here.
[0048]
Therefore, the moisture (including the case where it is frozen) adhering to the fan motor FM can be periodically evaporated even in areas and places with high humidity.
[0049]
In particular, in this embodiment, the fan motor FM is first driven to generate a certain amount of heat, and then further heat is generated by performing phase control, so that moisture can be reliably evaporated. It has a great anti-rust effect.
[0050]
Note that, as described above, one minute is sufficient for the rotation time of the burner fan F and the phase control time, but it can be set as appropriate.
[0051]
Further, the AC phase control is performed only in a particularly humid area, and usually only the rotational drive control of the fan motor FM may be performed.
[0052]
Hereinafter, the timing at which the above-described control is performed will be described with reference to the time chart shown in FIG.
[0053]
When the opening / closing lid 17 is opened, whether the phase control is performed or not, the limit switch LS outputs an open signal (100), and the control unit C receives this signal and drives the fan motor FM (200), ( 300).
[0054]
In addition, from this time, the timer of the control unit C counts the time, and when 24 hours have elapsed, the control for rotating the fan motor FM for one minute is started. However, when the opening / closing lid 17 is opened again halfway, the limit switch LS In response to the open signal (400), the control unit C drives the fan motor FM (500) and (600) and the timer is reset, when the open / close lid 17 is closed and the limit switch LS outputs a close signal ( Start counting again from 450).
[0055]
For example, when the open signal (400) is output when the last snow melting device A is used in winter, every time the timer counts 24 hours, even if the snow melting device A is not used for a long time thereafter, The controller C outputs a drive signal to the fan motor FM, and rotates the fan motor FM for one minute (700).
[0056]
If it is set to perform phase control, after the rotational drive of the fan motor FM is completed, the motor coil is also heated as a resistor for 1 minute to function as a heater (800). The attached water is evaporated.
[0057]
When the open / close lid 17 is opened for some reason and the open signal is output for some reason when the snow melting device A is not used, the control unit C drives the fan motor FM at this time (250), (350). However, after the timer is reset, when the opening / closing lid 17 is closed and the limit switch LS outputs a close signal (950), the timer starts counting again, and the fan motor FM is driven to rotate for one minute every 24 hours. repeat.
[0058]
In the above-described phase control, as shown in FIG. 5, the energization timing is determined every half cycle, and the timer is also timed by counting the commercial power source and converting it into time. ing.
[0059]
Therefore, when the frequency is 50 kHz and 60 kHz, there is a slight difference in the energization timing, and the control time is also shifted.
[0060]
Therefore, in this embodiment, the control unit C automatically determines the frequency so that the AC phase control can be accurately performed.
[0061]
Therefore, the above-described control can be accurately performed no matter where the present snow melting device A is installed in an area where the frequencies of 50 kHz and 60 kHz are mixed.
[0062]
Further, in the present embodiment, as shown in FIG. 4, the control unit C that performs such control is provided with a heating means such as a space heater H on the control board, as shown in FIG. When it is detected that TS is −10 ° C. or lower, the heater H is turned on, and when it is detected that TS is −3 ° C. or higher, the heater H is turned off. Therefore, the control unit C does not break down due to abnormally low temperature and always operates normally.
[0063]
Further, as another characteristic configuration in the present embodiment, the electrode-type water level sensor of the water level detection means B is a dedicated type for a snow melting device.
[0064]
In other words, snowmelt water is almost pure water, and the detection of the water level is unstable with a normal electrode-type water level sensor. Therefore, the detection signal level is amplified in multiple stages using an amplifying transistor, etc. Even near water, the water level can be reliably detected.
[0065]
Furthermore, since the snow melting device A is buried in the ground, a large amount of rainwater may flow into the pump chamber 14. In this case, if the drainage pump 30 breaks down, the burner device 21 or A case where the first chamber 11 containing the control unit C or the like is submerged is considered.
[0066]
Therefore, as shown in FIG. 4, the control unit C includes a float switch of the water level detection means B and a display means such as a warning lamp L provided in an external power supply box (not shown) of the snow melting device A provided on the ground. When the float switch is turned on, the warning lamp L is lit to notify the water level abnormality.
[0067]
Therefore, the user can immediately know the abnormality of the water level and can promptly respond thereafter.
[0068]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0069]
In the present invention, in the snow melting tank in which a snow melting cylinder provided with a burner device and a drainage pump for forcibly draining the snow melting water to the outside of the tank are disposed in the snow melting tank buried in the ground. When the open / close lid is closed, the fan motor of the burner device is controlled to rotate for a predetermined time every predetermined time, and before or after the fan motor (FM) is rotated for a predetermined time, the fan motor (FM ) Phase control to make the motor coil function as a heater .
[0070]
Therefore, it is effective to prevent rust by rotating it regularly, and it can be started up and used smoothly for the next use after a long snow season. Even when used in places, the moisture and ice adhering to the fan motor can be periodically evaporated, so the rust prevention effect is enhanced.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a snow melting tank of a snow melting device according to the present embodiment.
FIG. 2 is an explanatory view of the snow melting device as viewed from the front.
FIG. 3 is an explanatory view in plan view of the snow melting device.
FIG. 4 is a control block diagram of the snow melting device.
FIG. 5 is an explanatory diagram of phase control.
FIG. 6 is a time chart of control for rust prevention.
[Explanation of symbols]
A Snow melting device C Control unit
FM fan motor 1 Snow melting tank
17 Opening / closing lid
20 Snowmelt pipe
21 Burner equipment
30 Drain pump

Claims (1)

In the snow melting tank (1) buried in the ground, a snow melting cylinder (20) provided with a burner device (21) and a drain pump (30) for forcibly draining the snow melting water out of the tank are arranged. In the device
When the open / close lid (17) provided in the snow melting tank (1) is closed, the fan motor (FM) of the burner device (21) is controlled to rotate for a predetermined time every predetermined time, and the fan motor A snow melting device characterized in that phase control is performed on the fan motor (FM) before or after the (FM) is rotationally driven for a certain time , so that the motor coil functions as a heater .

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