JP2017107682A - Heater device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heater device capable of achieving power saving because a conventional snow melting and freezing prevention system requires use of a Nichrome wire heater and an excessive current by switching three-phase power at each phase to be controlled based on preset values such as snowfall, ambient temperature and a road surface temperature.SOLUTION: The heater device includes: a plurality of heaters formed from pitch-based carbon fiber; a switch device 1 connected in parallel to the plurality of heaters and connected onto power supply upstream side supplying AC power supply 100. The switch device 1 switches electrical connection to any of the plurality of heaters for each cycle of the AC power supply.SELECTED DRAWING: Figure 1

Description

    The present invention relates to a heater device.

  Conventional heaters for snow melting freeze prevention use nichrome wire heaters and temperature control uses sensors such as air temperature, road surface temperature, snowfall, etc. to save power. When supplying power to a plurality of heating elements that radiate and melt snow, the power circuit is switched to supply power to each heating element in a preset time in a preset order (for example, Patent Document 1). ), There is also one that switches three-phase power for each phase and energizes.

Japanese Patent Application Laid-Open No. 2003-066461

  As described above, the conventional snow melting freeze prevention system uses a nichrome wire heater, and when snow that requires excessive current falls, control is started. If the temperature and road surface temperature rise, the control is stopped. Further, the three-phase power is switched over for each phase and energized. The present invention provides a heater device capable of saving power.

  The present invention is a snow melting device that includes a switch device that is formed of pitch-based carbon fibers, in which a plurality of heaters and a plurality of heaters are connected in parallel, and that is connected to an upstream side of a power source that supplies AC power. The switch device is a heater device that switches electrical connection to one of a plurality of heaters for each cycle of the AC power supply.

In the connection part, the electric wire or the carbon fiber is wrapped at the connection part with the connection pressure contact terminal and the part other than the connection part is wrapped with the insulating tape.

  The heater device is characterized in that the heater is embedded in the aluminum channel when embedded in the pavement.

  As the carbon fiber, pitch-based carbon fiber having a high carbon content is used, and a switch device is provided on the upstream side for supplying an AC power supply, so that a heater device capable of saving power can be provided.

The block diagram of a control circuit. Carbon fiber heater structure. Carbon fiber and wire connection pressure contact terminal. Heater unit aluminum channel method. AC cycle alternating energization.

  Embodiments of the present invention will be described below with reference to the drawings.

  As shown in Fig. 1, a switch device (1c) is provided in the control circuit from the AC power source (100), and the area is doubled by switching to a plurality of heaters (1a, 1b) with the switch device (1c) for each cycle of AC power. It is possible to prevent snow melting and freezing.

As shown in FIG. 5, current is supplied to the parallel system (1a) in the AC wave cycle S1, and current is supplied to the parallel system (1b) in the AC wave cycle S2.

  As shown in Fig. 2, the carbon fiber (2a) has a high carbon content, and it is wrapped around the carbon fiber (2a) with Japanese paper or insulating paper (2b) to ensure contact with the thin lines of the carbon fiber (2a). In addition, the resistance value is lowered and the fluff of the carbon fiber (2a) is prevented from coming out of the coating, and the coating of the heat-resistant plastic (2c) is applied thereon to ensure insulation.

  As shown in FIG. 3, the terminal (3c) that connects the current-carrying wire (3e), carbon fiber (3b), and current-carrying wire (3d) cuts the carbon fiber when connected with a crimping terminal. ) Is used to prevent the carbon fiber (3b) from being cut, and the connection portion is wrapped with insulating tape, self-bonding tape, etc. (3f).

The heater unit (4) houses the heater in an aluminum channel (4a), and is provided with a screw hole (4c) for reinforcing the asphalt with an anchor on the asphalt by reinforcing it with an unequal side angle (4b).
(4d) shows the snow melting possible range.

According to the present invention, it is possible to save power on a roadway, a parking lot,
Snow melting and freezing on the sidewalk can be prevented.

1 Switch device and parallel system 1 and 2 heaters
1a Heater of parallel system 1
1b Heater of parallel system 2
1c switch device
100 AC power supply
Cycle applied to S1 1a
Cycle applied to S2 1b
2 Heater
2a Carbon fiber
2b Japanese paper or insulating paper
2c High temperature plastic coating
3a Carbon fiber coating
3b carbon fiber
3c Pressure contact terminal
3d conductive copper wire
3e Conductor wire coating
3f Insulating tape or self-bonding tape
3-2 Power line
4 Heater unit
4a Aluminum channel
4b Unequal side aluminum angle
4c Screw hole for anchor 10mm
4d Indicates possible snow melting range

Claims (3)

  A heater device comprising a plurality of heaters formed of pitch-based carbon fibers, and a switch device connected in parallel to the plurality of heaters and connected to a power supply upstream side for supplying an AC power supply, Is a heater device that switches electrical connection to one of a plurality of heaters for each cycle of the AC power supply.   2. The heater device according to claim 1, wherein in the connection portion, an electric wire or carbon fiber is wrapped with a connecting pressure contact terminal and a portion other than the connection portion is wrapped with an insulating tape in the connection portion. 3. The heater device according to claim 1, wherein the heater device is embedded in the aluminum channel when embedded in the pavement.