JP2585355Y2 - Human body local dryer - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a human body local drying apparatus.

(Prior Art) As a conventional human body local drying apparatus of this type, generally, a plurality of heaters having different maximum amounts of heat are combined and energized or de-energized, respectively, to give wind generated by driving a fan. The amount of heat was adjusted step by step.

(Problems to be solved by the invention) However, in recent years, from the viewpoint of improving the feeling, it has been desired to increase the number of stages of heat quantity adjustment. In order to achieve this, it is necessary to increase the number of heaters having different maximum amounts of heat in accordance with the number of stages, which is a significant cost increase.

Therefore, the present invention requires only a minimal increase in the number of heaters,
An object of the present invention is to make it possible to adjust the heat quantity of the heater in more steps.

[Structure of the Invention] (Means for Solving the Problems) The technical measures taken in the present invention to solve the above technical problems include a fan, a switch means, a first heater, and a fan for generating a wind directed toward a human body part. 3 of the first heater
A second heater having twice the amount of heat generation, a heater means for applying heat to the wind generated by the fan, and the first and second heaters are de-energized and half-wave energized in response to a signal from the switch means And a human body local drying apparatus having a drive circuit set to one of the full-wave energization mode.

(Operation) The above technical means operates as follows. That is, by appropriately changing the energization state (one of non-energization, half-wave energization, and full-wave energization) to each of the first and second heaters, nine levels of heat generation can be obtained at equal intervals.
With such linearity, it is possible to select a human body local drying temperature that has a good feeling against the outside air temperature.

(Embodiment) An embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the input ports P1 to P10 of the logic circuit 1 are connected to the first switch to the tenth switch 1 respectively.
1 is connected. Output ports P11 to P15 of logic circuit 1
The first relay 13 which is normally open via the switch circuit 12
To the fifth relay 17 are connected. The second relay 14 is the first
The first relay 13 is connected to a heater 18 and a diode
It is connected to the first heater 18 via 19. 4th relay
16 is connected to the second heater 20 having a different maximum heat quantity from the first heater, and the third relay 15 is connected to the second heater 20 via the diode 21. A motor 23 for driving the fan 22 is connected to the fifth relay 17. Furthermore, the first
An AC power supply 24 is connected between the relays 13 to 5 and the first and second heaters 18, 20 and the motor 23. A diode 25 for preventing the switch circuit 12 from being damaged by a high voltage is connected to each coil side of the first to fifth relays 13 to 17. In this embodiment, the first heater 18
The ratio of the maximum amount of generated heat to the second heater 20 is 3: 1.

 Next, the operation will be described.

When the first switch 2 is turned on, the first to fifth relays 13 to 17 operate as shown in FIG. As a result, the fan 22 is actuated to invent wind toward the human body, and the first heater 18 and the second heater 20 are energized in full-wave.
100% heat is generated from the heater 18 and the second heater 20,
This heat is given to the wind.

When the second switch 3 to the tenth switch 11 are turned on, they operate as shown in FIG. 3, thereby generating heat as shown in FIG.

As described above, nine steps of adjustment can be performed by two heaters, and multi-step equal interval adjustment can be performed with a minimum increase in the number of heaters.

[Effect of the invention]

In order to achieve the same purpose as the present invention, a technology that enables continuous adjustment by phase control or duty control is conceivable, but the control circuit becomes complicated and the cost is increased. Further, in the phase control, since the heater is switched at each point of the AC waveform, a large noise is generated. In the duty control, a power supply voltage drop occurs when the heater is switched, and the power supply is connected to the same power supply. There is also a problem such as affecting other electric appliances (for example, the lighting blinks and, in the worst case, causes a visual impairment to the user). However, according to the present invention, the fan that generates wind toward the human body part and the first and second heaters that supply heat to the wind generated by the fan (non-energized, half-wave energized, and full-wave energized) One of energized)
Can be appropriately changed to obtain nine levels of heat generation at equal intervals. With such linearity, it is possible to select a human body local drying temperature that has a good feeling against the outside air temperature.

[Brief description of the drawings]

1 and 2 are control circuit diagrams of the human body local drying apparatus according to the present invention, and FIG. 3 is an operation table of the logic circuit of FIG. 1 ... Logic circuit (drive circuit), 2-11 ... First to tenth switch (switch means), 13-16 ... First to fourth relay (drive circuit), 18,20 ... 2nd heater (heater), 1
9,21: Diode (drive circuit), 22: Fan.

Claims (1)

(57) [Scope of request for utility model registration] 1. A fan for generating wind directed toward a human body, a switch, a first heater, and a first heater.
A second heater having twice the amount of heat generation, a heater means for applying heat to the wind generated by the fan, and the first and second heaters are de-energized and half-wave responsive to signals from the switch means. A human body local drying apparatus having a drive circuit in which nine levels of heat values are obtained at equal intervals by setting either energization or full-wave energization.