JPS6031678Y2 - clothes dryer heater - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heater attachment part of a dryer that supplies heated air from a heater into a rotating drum provided in an outer box to dry clothes.

The above dryer uses a semiconductor heater as a heater, and also has a fan inside the outer box.The air from the outer box is drawn in by the power of the fan, and the air is passed through the heater to be heated to be dried inside the rotating drum. It has a structure in which it is applied to clothing and then discharged outside the outer box.

In such a structure, there are various methods for changing the heating temperature depending on the type of clothing to be dried, such as cotton, linen, silk, and synthetic fibers.

One example is to use a heating element such as a PTC thermistor in the heater, and change the heat generating area by installing a plurality of heating elements and varying the number of activated elements.

However, with this method, the circuit for controlling the heating element becomes complicated, and semiconductor heaters such as PTC thermistors take time to completely generate heat after being energized, so the amount of heat generated cannot be increased immediately. The drawback is that it cannot be done.

Another possible method is to change the amount of heating air.

There are methods to change the size of the air suction port formed in the outer box, or to divide the air suction port into two and open or close one of them.

However, this method has disadvantages in that the processing on the outer box increases and the number of steps required, and the suction port is located on the front surface of the outer box from the viewpoint of operability, which is not aesthetically pleasing.

The purpose of the present invention is to eliminate the above-mentioned disadvantages and provide a heat generating part with a simple mechanism that can change the temperature of heated air even if the conventional air suction port and air supply duct are used as is. It is.

According to the present invention, in a clothes dryer having a structure in which heated air from a heater is supplied to dry clothes in a rotating drum provided in an outer box, the heater mounting base frame and the An air supply duct consisting of a cylindrical hood that fits on the base frame is formed on the suction port side, and a tension part protruding from the air supply duct is integrally provided at one end of the heater, and the tension part is A means for pulling downward is provided, and when this is pulled downward, the heater moves on the base frame in the air supply duct, using the end where the tension part is provided as a rotation axis, and the other end moves away from the base frame and moves upward. The heater is installed almost horizontally on the base frame so that it can rotate freely, and an air supply path is provided in the air supply duct in which air flows into the drum without passing through the heater between the heater and the supply air duct. are distant relatives by forming

Examples will be described in detail below with reference to the drawings.

First, to explain the overall structure of the dryer using the heater of the present invention with reference to Fig. 1, 1 is the outer box of the dryer;
A door 3 for opening and closing an opening of a cylindrical part 2 for loading and unloading laundry is pivotally mounted on the front side of the housing.

In the figure, reference numeral 4 denotes a drum for storing laundry rotatably supported between a drum receiver 5 and a spherical bearing 6 provided inside the outer box 1 and along the outer periphery of the cylindrical portion 2. , rotated by a motor 8 connected by a transmission belt.

Note that 9 is an idler biased by a spring 10.

Reference numeral 11 denotes an inlet provided at the upper part of the back of the outer box 1,
The outside air sucked in through the suction port 11 is heated by a heater 13 provided in the air supply duct 12.

14, the hot air heated by the heater 13 is transferred to the drum 4;
It is an annular felt that maintains airtightness between the cylindrical part 2 and the drum 4 in order to guide everything inside.

A fan 15 is connected to the motor 8 by a fan belt 16, and the fan 15 discharges the hot air that has passed through the drum 4 to the outside through an exhaust pipe 17 and an exhaust port 18.

Note that 19 is a felt that prevents outside air from entering between the drum 4 and the exhaust case 17.

Next, the main parts of the present invention will be explained with reference to FIGS. 2 and 3. The air supply duct 12 surrounding the heater 13 is fitted onto the installation base frame 2o of the heater 13 and the base frame 20. It is constructed by combining a cylindrical hood 21.

The heater 13 has a structure in which a PTC thermistor 24 is inserted between an upper electrode plate 22 and a lower electrode plate 23 and fixed on an insulating base 25.

The heater 13 is placed almost horizontally on the base frame 20, and the heater 13 is integrally provided with a tension portion 26 made of a protruding rod that protrudes from the side edge of the insulating base 25, and this is made to protrude into the air supply duct 12. , a wire locking portion 26A is formed at the tip of the tensioning portion 26.

Connect the end of the wire 27 to the locking part 26A, and
The other end of 7 is connected to a tensioning mechanism 28, and its operating section 29 is provided on the front surface of outer box 1.

Next, how to use the heater 13 is normally placed horizontally on the base frame 20, and receives circulating air over the entire surface within the air supply duct 12 to heat it.

In the case of drying clothes such as silk or synthetic fibers that cannot be heated to a high temperature, by pulling the wire 27, the heater 13 will move to the second position with the side edge of the base frame 20 on the side where the tension part 26 is provided as the rotation axis.
As shown by the chain line in the figure, the opposite end without the tension part 26 moves away from the base material 20 and rotates upward, and a gap is formed between the heater 13 and the base frame 20.

As a result, in the air supply duct 12, an air supply path is formed between the heater 13 and the air supply duct 12, through which air flows into the drum 4 without passing through the heater 13. The temperature of the heated air generated and sent to the drum 4 decreases.

Note that if the wire 27 is loosened, the heater 13 will return to its original horizontal position, but as shown in FIG.
If a coiled spring 30 is interposed between the heater 13 and the insulating base 25 of the heater 13 to bias the heater 13 horizontally, the above return can be carried out smoothly.

As mentioned above, the clothes dryer heater of the present invention is
The amount of air heating can be changed without controlling the heater heat generating section or changing the size or number of air suction ports.

In addition, since it can use a conventional air supply duct and does not require any special processing on the dryer itself, it can be applied to conventional dryers as well, and the amount of air blown onto the clothes to be dried remains constant regardless of temperature changes. Therefore, there is no risk of impairing drying efficiency.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional side view of a dryer equipped with the heater of the present invention, Fig. 2 is a longitudinal sectional view of the main parts showing an embodiment of the invention, and Fig. 3 is a view of the dryer with the heater installed on the base frame. FIG. 1... Outer box, 4... Rotating drum, 12
...Air supply duct, 13...Heater
20... Heater installation base frame, 21...
・Hood, 26...Tension part, 26A...
- Locking part, 27... wire.

Claims (1)

[Scope of utility model registration request] In a clothes dryer configured to dry clothes by supplying heated air from a heater into a rotating drum provided in an outer box, there is a cylindrical base frame that fits on the heater mounting base frame and the base frame. An air supply duct consisting of a hood is formed on the suction port side, a tension part protruding from the air supply duct is integrally provided at one end of the heater, and a means for pulling the tension part downward is provided. When the heater is pulled downward, the heater is placed on the base frame in the air supply duct, with the end where the tension part is provided as the rotation axis, and the other end is separated from the base frame so that it can freely rotate upward. The clothes dryer is installed almost horizontally on the base frame and forms an air supply path in the air supply duct between the heater and the air supply duct through which air flows into the drum without passing through the heater. machine heater.