JPS6138547Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drum-type washing machine that performs washing and drying processes in a rotating drum, and dewatering process in a centrifugal dewatering tank.

Since this type of washing machine is a so-called two-tank type, the space inside the machine is small, and when a circulation type is adopted as a drying process method, it is difficult to secure a space for installing a dehumidifier.

This invention was made in view of these points,
By using the centrifugal dehydration tank as a dehumidifier,
To provide a drum-type washing machine with a simple structure and low price, which eliminates the need for a space for installing a dehumidifier and also eliminates the need for the dehumidifier itself. That is, a dehydration receiving tank is interposed in the return path of the drying air that leaves the rotating drum and returns to the blower fan, and the centrifugal dehydration tank is formed to be able to store water. Therefore, when the drying air comes into contact with the outer surface of the water-cooled centrifugal dehydration tank, the moisture removed from the clothes is condensed, and the drying air itself is returned to the blower fan with reduced humidity. In other words, the centrifugal dehydration tank becomes a dehumidifier for the drying air.

Below, examples will be explained based on the drawings.
is a machine body, inside which there are a water tank 3 in which a rotating drum 2 is arranged and a dewatering tank 5 in which a centrifugal dehydration tank 4 is arranged.
are installed in parallel. Here, the water receiving tank 3 and the dewatering tank 5 share a partition wall 6 and are integrally molded from resin or metal. In addition, the rotating drum 2 has a drying air inlet 7 on the rear end face and an outlet 8 on the front end face, and a large number of small-diameter transparent holes near the front of the circumferential face and around the outlet on the front end face. Holes 9 are drilled, and inside the circumferential side there is a hole 9 for picking up clothes.
0... is set. The centrifugal dewatering tank 4 is formed from a metal material in an upwardly expanding shape, and has dewatering holes 11.
...is provided only on the upper circumferential side.

Reference numeral 12 indicates a motor-driven ventilation fan disposed above the rear portion of the dehydration receiving tank 5; 13 indicates an L-shaped outgoing path that communicates the discharge port of the fan 12 with the inlet 7;
4 enters into the rotating drum 2 and opens through holes 9... and outlet 8.
In order to return the air discharged from the water tank 3 to the fan 12, a ventilation hole 15 in the upper part of the partition wall 6, a dewatering tank 5,
The return path is formed by the protruding opening 16 in the rear wall of the tank. Reference numeral 17 denotes a harmonica-shaped heater made of a positive temperature coefficient thermistor disposed in the outward path 13.

Reference numeral 18 denotes a drive motor disposed outside and below the water receiving tank 3, which rotates the rotary drum 2 at a reduced speed using a belt or the like. 19 is a dehydration motor that rotates the centrifugal dehydration tank 4 at high speed.

Reference numeral 20 denotes a centrifugal cooling fan installed near the drive motor 18, which is rotated in conjunction with the drive motor 18, sucks in outside air, and cools the motor 18.
The dewatering motor 19 and the outer bottom of the water receiving tank 3 are cooled.

Reference numeral 21 denotes a drainage channel for washing water that communicates with the bottoms of the water receiving tank 3 and the dehydration receiving tank 5, and is connected to the water receiving tank 3 through a drain valve 22. Reference numeral 23 denotes a window hole provided on the front side of the machine body 1 opposite to the above-mentioned outlet 8, through which the movement of clothes in the drum can be visually observed. 24,
25 is the outer cover of the water receiving tank 3 and the dehydration receiving tank 5; 26... is the above-mentioned ventilation fan 12, heater 17, drive motor 1;
8. An operation knob for controlling the dewatering motor 19 and the drain valve 22.

Next, to explain the operation of this embodiment, in the washing (including rinsing if necessary) process, the drain valve 2
2 is closed, water is supplied, detergent is added as appropriate, and the rotary drum 2 is rotated at a reduced speed by the drive motor 18. The clothes in the drum contain the washing water that enters through the through holes 9, and are stirred up and dropped to be washed by washing. In the draining process, the drain valve 22 may be opened. In the dehydration step, the centrifugal dehydration tank 4 is rotated by the dehydration motor 19.

In the drying process, after the draining process is completed, the rotary drum 2 is rotated by the drive motor 18, and at the same time, the cooling fan 20 is rotated to air-cool the water receiving tank 3. It also drives the ventilation fan 12 and supplies power to the heater 17. On the other hand, water is previously poured into the centrifugal dehydration tank 4 to the upper limit to cool the water tank 4 with water. First, the clothes in the drum 2 are loosened by rotation. The air sent out to the outward path 13 by the blower fan 12 is heated by the heater 17 to become drying air, and enters the drum 2 from the inlet 7. This drying air heats and dries the loosened clothes as it travels toward the outlet 8, but a certain amount of air also leaks into the water receiving tank 3 from the through holes 9. Thus, the air coming out of the outlet 8 and the through holes 9 into the water tank 3 comes into contact with the air-cooled water tank 3, causing moisture in the air to condense. Then, from the return route 14, the ventilation fan 1
2, the air comes into contact with the water-cooled centrifugal dehydration tank 4 to condense moisture in the air, and the air is reduced in humidity and returned to the blower fan 12, where it is circulated thereafter. The condensed water flows out from each tank 3, 5 into a drainage channel 21 and is drained.

As mentioned above, the drum type washing machine according to the present invention is
Since the centrifugal dehydration tank is made to be able to store water and cooled by water, and is also built into the return route, the centrifugal dehydration tank can also be used as a dehumidifier, making the structure simple by eliminating the need for a dehumidifier and its installation space. Moreover, it is possible to provide a low-cost drum-type washing machine having a circulation drying function.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of a drum-type washing machine according to the present invention, FIG. 2 is a side sectional view, FIG. 3 is a plan sectional view of the main part, and FIG. 4 is a side sectional view of the centrifugal dewatering tank side. 2... Rotating drum, 3... Water receiving tank, 4... Centrifugal dehydration tank, 5... Dehydration receiving tank, 11... Dehydration hole, 12
...Blower fan, 13...Outbound trip, 14...Return trip.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A water receiving tank equipped with a rotating drum, a dewatering tank equipped with a centrifugal dehydrating tank, an outgoing path for sending drying air to the rotating drum using a blower fan, and a rotating 1. A drum-type washing machine comprising: a return path for returning drying air exiting the drum to a blower fan; the dehydration receiving tank is interposed in the return path, and the centrifugal dehydration tank is formed to be capable of storing water. (2) The drum-type washing machine according to claim 1, wherein the centrifugal dewatering tank is made of a metal material.