JPH038800B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clothes dryer, and more particularly to an improvement in a heat generating device using a semiconductor heater (hereinafter simply referred to as a semiconductor heater) having a positive resistance temperature characteristic as a heat generating element.

FIG. 1 shows a cross-sectional structure of a clothes dryer using a semiconductor heater as a heat source, in which 1 is an outer frame of the main body, and 2 is a front plate of the main body. Reference numeral 3 denotes a rotating drum for storing objects to be dried; 4 a heater mounting plate; and a semiconductor heater 6 is provided between the main body front plate 2 and a heater mounting base 5. Reference numeral 7 denotes a door which is freely openable and closable at the opening of the main body front plate 2 for putting in clothes, and has an air intake port 7a at a part of its outer periphery to draw in outside air. 8 is a fan for blowing air, and the power of a motor 9 is transmitted through a belt 10 to rotate the fan. Similarly, the rotating drum 3 is driven by the power of the motor 9 being transmitted via the V-belt 11. 12 is a filter 12 that collects cotton waste.

To explain the operation of the clothes dryer having the above configuration, the air heated by the semiconductor heater 6 is guided into the rotating drum 3 through the air intake port 13 provided on the heater mounting plate 4 by the blower fan 8, The object to be dried is dried by contacting the object and exchanging heat, and is exhausted from the filter 12 to the outside of the outer frame 1 through the exhaust port 14.

Here, since the semiconductor heater 6 is disk-shaped and has an electrode on a flat surface, electrode plates with spring properties are pressed on both sides and a plurality of semiconductor heaters are attached. This has the disadvantage that the electrical connection with the wire tends to be incomplete. To overcome this drawback, some products with a harmonica-like structure are available on the market, in which a rectangular semiconductor heater is held down by an electrode plate, but even this product requires mounting screws, terminal screws, etc. It has the disadvantage that it requires a large number of parts and is quite expensive.

In view of the above-mentioned conventional circumstances, the present invention aims to reduce the number of parts and provides a highly reliable mounting structure for a semiconductor heater.

The basic configuration of the present invention is that a heat radiation fin is attached to the electrode of a semiconductor heater, a connection terminal is attached to the heat radiation fin, and a groove for mounting the connection terminal is formed in the heater mounting base.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIGS. 2 and 3, reference numeral 15 denotes a semiconductor heater having a substantially plate shape and having a positive resistance-temperature characteristic. 16 is a heat dissipation fin that also serves as an electrode.
The aluminum plate is formed into a corrugated shape to improve heat dissipation through ventilation. Reference numeral 17 denotes a terminal plate attached to the heat dissipation fin 16, and the end thereof is provided with a connection terminal 18 for wiring lead wires. the semiconductor heater 15;
Connection between heat dissipation fins 16 and heat dissipation fin 1
6. The terminal plates 17 are joined by welding or conductive adhesive.

Since the semiconductor heater 15 is divided into large and small parts and provided with an insulating distance, a changeover switch (not shown) is required.
By opening and closing operations of the semiconductor heater 15, the input can be switched to control the amount of heat generated by the semiconductor heater 15.

A connection terminal 1 is provided on the outer peripheral wall of the heater mount 5.
A groove 19 is formed corresponding to 8, and this groove 19
A connecting terminal 18 is attached to the heater mounting base 5, and the connecting terminal 18 is led out to the outside of the heater mounting base 5. A connector 20, such as a Faston terminal, is caulked and fixed to the end of the lead wire 21, and is detachably connected to the connection terminal 18. The heater mounting base 5 and the semiconductor heater 15 form a sandwich-arch shape, and are housed between the heater mounting plate 4 and the main body front plate 2 as shown in FIG.

As is clear from the above embodiments, according to the present invention, the mounting of the semiconductor heater on the heater mounting base is
This can be done stably without using screws, etc., and the structure is simplified because the heater mounting base and semiconductor heater form a sandwich-like structure and are housed between the heater mounting plate and the front panel of the main unit. In addition, since the semiconductor heater can be positioned using the connecting terminal, the positioning of the semiconductor heater with respect to the heater mounting base is stable, and assembly can be performed with high precision. can be easily connected.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing the general structure of a clothes dryer, Fig. 2 is an external perspective view showing the structure of a semiconductor heater in an embodiment of the present invention, and Fig. 3 is an installation of the same heater on a heater mount. FIG. 3 is an external perspective view showing the structure. 2...Main body front plate, 3...Rotating drum, 4...
Heater mounting plate, 5... Heater mounting base, 15... Semiconductor heater, 16... Radiation fin, 18... Connection terminal, 19... Groove, 20... Connector.

Claims (1)

[Claims] 1. A semiconductor heater having a substantially rectangular shape having positive resistance-temperature characteristics, a connecting terminal electrically connected to a discharge fin attached to an electrode surface of the semiconductor heater, and a heater mounting base made of an electrically insulating material having a groove. , the semiconductor heater is provided on a heater mounting plate having a large number of intake ports via a heater mounting base, the connecting terminal is attached to the groove, and the connecting terminal and the connector are detachably attached on the outside of the heater mounting base. The heat generating device of the clothes dryer.