JPH0211198A - Washing machine - Google Patents

Abstract

PURPOSE:To execute washing with warm water by raising the water temperature of pouring-into water and to make a detergent effectively show the detergency of by providing a water temperature adjusting heater for the space part between a water tank and a dewatering tank. CONSTITUTION:A heater 21 having an excellent waterproof characteristic is provided for the space formed with a water tank 5 and a dewatering tank 6. The heater 21 is obtained by bending a sheathed heater having the outer diameter of 7mm into a circular shape having the diameter of 240mm, a nickel chromium wire is used as a heating wire, and the water temperature is controlled by continuously or intermittently supplying power to the heater 21 by a power supplying means 22. The power supplying means 22 is composed of an automatic temperature controller 27, a temperature fuse 28, and a timer 29, and the automatic temperature controller 27 is a bimetal-system automatic reset type controller and controls the temperature of the water temperature by turning off at the upper limit of a set temperature and turning on at the lower limit of the set temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a heater for adjusting the water temperature of a washing machine.

<Prior art> In conventional fully automatic washing machines, a water tank is arranged around the outer periphery of a dehydration tank at a certain distance apart, and the dehydration tank and the water tank are mechanically separated by a circular resin cover. A dehydration tank and a water tank are built into the main body of the washing machine.

Additionally, a pulsator (a part that creates water flow) is installed at the bottom of the dehydration tank, and the dehydration tank and pulsator are driven separately.

That is, when washing or rinsing, the dehydration tank is fixed, and only the pulsator rotates to create a spiral water flow, allowing washing and rinsing to be carried out. During dehydration, the dehydration tank rotates at high speed to perform dehydration.

Tap water or well water (in certain areas) is supplied as water for washing.

Problems to be Solved by the Invention However, washing is carried out at the temperature of the water supplied to the water tank, and there are significant differences in the temperature of tap water depending on the region. Therefore, there is a problem that the cleaning power of the detergent cannot be sufficiently exerted depending on the water temperature.

In view of the above, an object of the present invention is to provide a washing machine that can exhibit sufficient cleaning power by increasing the water temperature and performing hot water washing.

<Means for Solving the Problems> The means for solving the problems according to the present invention, as shown in FIGS. In a washing machine consisting of a dehydration tank 6,
A water temperature adjusting heater 21 is disposed in a space between the water tank 5 and the dehydration tank 6.

<For use> In the above problem solving means, if the injected water is stored at a predetermined water level (either high water level, medium water level, or low water level) in the water tank 5, and the rated frequency and rated voltage are applied to the heater 21, the water will continue to flow. When the heater 21 is energized, a current flows through the heater 21, and the generated Joule heat increases the temperature of the injected water, and the water temperature rises to the hot water washing area. Further, by setting the energization time and off time of the heater 21 and performing intermittent energization of the heater 21, the water temperature can be set to an arbitrary temperature.

Therefore, by providing the heater 21 in the water tank 5, the temperature of the injected water becomes high, and hot water washing can be performed, and the cleaning power of the detergent can be effectively exerted, making it easier to remove stains from the items to be washed.

<Example> An example of the present invention will be described based on FIGS. 1 to 3. FIG. 1 is a schematic sectional view of a washing machine showing an embodiment of the present invention, FIG. 2 is a plan view of the heater, and FIG. 3 is an electric circuit diagram of the heater.

First, the schematic structure of a fully automatic washing machine according to this embodiment will be explained based on FIG. 1. The main body 1 of the washing machine is formed into a box shape with an open top, and legs 2 made of synthetic rubber for vibration absorption are attached to the bottom plate 1a, and a top plate 1b of the upper part of the washing machine main body 1 is attached.
A reproducing section 3 having a reproducing switch, a display section, etc. at the rear of the
are arranged.

A support rod 4 and a coil spring 4a are installed inside the washing machine main body 1.
A resin water tank 5 with an open top surface and elastically supported by a resin water tank 5 is installed inside the water tank 5, and a resin dewatering tank 6 having a large number of drainage holes 6a is installed inside the water tank 5. A pulsator 7 is rotatably supported at the bottom of the dehydration tank 6 via a rotating shaft 8, and a belt boot 179 is attached to the lower end of the rotating shaft 8, passing through the water tank 5.
is fixed.

Further, a motor 10 is fixed to the lower surface of the water tank 5, and a motor pulley 1 is attached to a motor pongee 10a of the motor 10.
A belt 12 is wound between the belt pulley 9 and the belt pulley 9. The rotating shaft 8 includes an inner shaft 8a to which the pulsator 7 is fixed to the upper end and the belt boot IJ9 to the lower end, and an inner shaft 8a that is rotatably fitted onto the inner shaft 8a and whose upper end is connected to the dehydration tank 6.
It has a double shaft structure consisting of an outer shaft 8b fixed to the lower part of the shaft, and both are removably connected to each other by a clutch 13, a brake, etc. The clutch 13 and rotating shaft 8 are housed in a housing 14 fixed to the lower surface of the water tank 5.

The motor 10 is capable of forward and reverse rotation, and for example, in the case of an alternating current type, a fundensaran type motor is used in which the direction of rotation can be changed by switching terminals.

In addition, in the case of a DC type, forward rotation and reverse rotation are possible by switching the direction of the flowing current.

In addition, the water tank 5 is provided with a water level sensor 15.
The water level in water tank 5 is detected and the injected water is at a high water level (injected water amount 5
01), medium water level (4ON), and low water level (301).

The water level sensor 15 is installed in the operation panel of the detailed operation section 3, and the water level is detected by the following configuration. That is, as shown in FIG. 1, a water level detection box 17 with a hole 16 communicating with the water tank 5 is formed outside the bottom corner of the water tank 5, and the water level detection box 17 constitutes an air trap. An air intake port 18 is formed in the upper part of the tank, and a pressure guiding pipe 19 connected to the water level sensor 15 is connected to the air intake port 18 . Note that a lid 20 for sealing the air inside the water level detection box 17 is provided at the bottom of the water level detection box 17.

In the washing machine of the present invention, a highly waterproof heater 21 is disposed in a space formed by the water tank 5 and the dehydration MJ 6. The heater 21 is a sheathed heater with an outer diameter of 71III11 bent into a circle with a diameter of 240 mm, and a nickel-chromium wire is used as the heating wire.
Water temperature can be controlled by continuous or intermittent energization.

The heater 21 is arranged parallel to the bottom surfaces of the water tank 5 and the dehydration tank 6 at a constant interval, and is made of corrosion-resistant SUS.
Water tank 5 by 304 stainless steel fixed angle 23
It is fixedly supported by screws 24 on the bottom surface of. As shown in FIG. 2, the fixed angle 23 is fixed to the water tank 5 at three locations with an interval of 120 degrees from each other, and the upper part is formed into a U-shape in cross section, and holds the heater 21 therebetween. *The end of the heater 21 is attached to a sealing material 25 screwed to the water tank 5.
The lead wire 26 extends through the side surface of the water tank 5, and a lead wire 26 is connected to the terminal thereof.

The energizing means 22 is composed of an automatic temperature regulator 27, a temperature fuse 28, and a timer 29. The automatic temperature regulator 27 is a bimetal type automatic reset type, and turns off at the upper limit of the set temperature. It turns on at the lower limit of and controls the water temperature.

The temperature fuse 28 is fused to cut off electricity when the automatic temperature regulator 27 malfunctions (fails) and the temperature of the heater 21 rises. Note that 30 is a power plug.

Then, connect the power plug 30 to 50% of the rated frequency and rated voltage.
Applying /60H2-AClooV results in continuous energization, and setting the energization time and off time of the timer 29 results in intermittent energization.

In the above configuration, the injected water activates the water level sensor 15 (
The water is stored at a predetermined level (either high water level, medium water level, or low water level) in the aquarium 5 (separate program settings).
In a washing machine, if you put the laundry in this state, it will be "soaked").

Next, when a rated frequency and 50/60H2% AC 100V voltage (for export specifications: AC 110V to 240V) is applied to the heater 21 via the lead wire 26, the nickel-chromium wire inside the heater 21 is continuously energized. When the current flows, the temperature of the injected water is raised by the Joule heat generated, and the water temperature reaches the set temperature range of the automatic temperature controller 27 from 15 to 4.
The water temperature rises to the 0'C hot water washing range. After that,
An automatic temperature regulator 27 performs temperature control so that the water temperature is constant.

For example, inject water with an amount of 301 (low water level) at 20 deg (
AC100■, I to raise the water temperature (20℃ → 40℃)
Approximately 50 minutes with KW heater, and water volume 501 (high water level)
Similarly, it takes about 80 minutes to raise the water by 20 degrees. Further, by setting the energization time and off time in the timer 29 and energizing the heater 21 intermittently, the water temperature can be set to an arbitrary temperature.

Therefore, by providing the heater 21 in the water tank 5, the temperature of the injected water becomes high (warm water washing can be performed, and the detergent's cleaning power can be effectively exerted, so that the stains on the items to be washed can be easily removed). .

It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

For example, the heater 21 may be installed not only on the bottom of the aquarium 5 but also along the side of the aquarium 5. Also, a sheathed heater may be used as the heater 21 to adjust the water temperature of a water purifier or a fish tank, or for use in a toilet. Can be used to automatically adjust the temperature of toilet seat heaters.

As is clear from the above description, according to the present invention, in a washing machine consisting of a water tank built into the washing machine body and a dehydration tank rotatably built into the water tank, there is a gap between the water tank and the dehydration tank. Since a water temperature adjustment heater is installed in the space, the water temperature of the injected water can be raised to perform hot water washing, allowing the cleaning power of the detergent to be effectively demonstrated, making it easier to remove stains from the items to be washed. It has an excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of a washing machine showing an embodiment of the present invention;
FIG. 2 is a plan view of the heater, and FIG. 3 is an electric circuit diagram of the heater. 1: washing machine body, 5: water tank, 6: dehydration tank, 21: heater, 22: energizing means, 23: fixed angle, 24: screw, 25: sealing material, 26: lead wire, 27: automatic temperature controller, 28: Temperature fuse, 29: Timer Applicant: Sharp Corporation <Effects of the invention>

Claims (1)

[Claims] In a washing machine consisting of a water tank built into a washing machine body and a dehydration tank rotatably built into the water tank, a heater for adjusting water temperature is disposed in a space between the water tank and the dehydration tank. A washing machine featuring