KR20070066344A - Washing water preheating device for drum washing machine - Google Patents

Abstract

The present invention relates to a washing machine preheating device for a drum washing machine. In particular, a chamber is installed at one side of a duct, and a water supply pipe connected to a tub communicates with the chamber, whereby the washing water has a predetermined temperature due to thermal energy supplied from the duct inside the chamber. The present invention relates to a washing machine preheating device for a drum washing machine which is supplied to the inside of a tub after being heated above.

Washing water preheating device for a drum washing machine according to the present invention is a cabinet forming a predetermined space, the tub is installed inside the door, the tub is a wash water formed in a predetermined space, rotatably installed inside the tub, a plurality of holes An additional drum is formed to contain the laundry, a driving device installed on the tub, connected to the drum, a duct installed in communication with the tub to circulate air in the tub, a blowing fan and a heater installed inside the duct. And a chamber installed at a circumferential surface of a portion of the duct and forming a predetermined space, a pump installed at a water supply pipe and a water supply pipe connected to one side of the chamber, a supply pipe and a valve connected between the other side of the chamber and a tub; When the supply of the washing water is started through the water supply pipe, a power is applied to the heater to control the washing water fresh inside the chamber to be heated. Characterized in that it contains.

Description

Washing machine preheating device for drum washing machine {PRELIMINARY HEATER FOR DRUM TYPE WASHING MACHINE}

1 is a cross-sectional view showing a drum washing machine according to the prior art,

2 is a cross-sectional view showing a drum washing machine according to the present invention;

3 is a side view of the washing machine preheating device for a drum washing machine according to the present invention;

4 is a cross-sectional view showing a washing water preheating device for a drum washing machine according to the present invention;

5 is a front view showing a washing machine preheating device for a drum washing machine according to the present invention;

6 is a block diagram illustrating a washing machine preheating device for a drum washing machine according to the present invention.

<Explanation of symbols on main parts of the drawings>

110: cabinet 120: tub

122: drum 124: driving device

130: duct 132: blowing fan

134: heater 150: chamber

152: water supply pipe 154: drain pipe

156: water temperature sensor 158: control unit

The present invention relates to a washing machine preheating device for a drum washing machine. In particular, a chamber is installed at one side of a duct, and a water supply pipe connected to a tub communicates with the chamber, whereby the washing water has a predetermined temperature due to thermal energy supplied from the duct inside the chamber. The present invention relates to a washing machine preheating device for a drum washing machine which is supplied to the inside of a tub after being heated above.

In general, the drum washing machine is a device for washing laundry by rotating the drum by the driving force of the motor in a state in which detergent, washing water and laundry are put into the drum.

The drum washing machine has the advantage of less damage to the laundry and the laundry is not tangled well, knocking and rubbing the washing effect.

Recently, a double drum washing machine for drying laundry can be used by blowing hot air through a drying duct. The combined drying drum washing machine selectively or continuously performs a washing stroke, a rinsing stroke, a dehydrating stroke, and a drying stroke.

Hereinafter, with reference to the accompanying Figure 1 with respect to the conventional drum washing machine will be described in detail.

1 is a side cross-sectional view schematically showing the main configuration of a conventional drum washing machine.

Referring to FIG. 1, the drum washing machine includes a cabinet 1 having a laundry inlet formed on a front surface thereof, a door 2 installed to be opened and closed at a laundry inlet of the cabinet 1, and inside the cabinet 1. Tub 30 is installed to store the wash water, the drum 40 is rotatably installed in the tub 30, the hot air suction hole 41 is formed, the tub 30 is installed in the drum ( 40 is configured to include a motor device (not shown) for transmitting a driving force.

The door 2 is provided with a door glass 2a to protrude toward the opening side of the tub 30. In addition, the drum washing machine is provided with a drying duct 10 and a condensation duct 20 for circulating air for a drying stroke, and the drying duct 10 and the condensation duct 20 are fixed to the tub 30. .

The drying duct 10 and the condensation duct 20 are installed to communicate with each other and to communicate with the inside of the drum 40, and the tub 30 has an inlet 31 through which the hot air is sucked through the drying duct 10. ), And a discharge port 32 through which air is discharged to the condensation duct 20.

In addition, the condensation duct 20 is provided with a water supply 7 for supplying cooling water to condense moisture in the air.

In addition, the drying duct 10 is provided with a heater 75 and a blowing fan 85 for supplying hot air into the drum 40.

Meanwhile, one end of the drying duct 10 and the tub 30 are connected by a gasket 3, and the gasket 3 is installed along the rim of the tub 30 and vibrates the tub 30. It has a corrugated shape to accommodate it.

Accordingly, the hot air is prevented from leaking through the connection portion between the drying duct 10 and the tub 30.

The drum washing machine configured as described above performs washing, rinsing, dehydrating and drying operations.

Hereinafter, the drying administration of the drum washing machine configured as described above will be described.

When the drying operation of the drum washing machine is started, power is applied to the heater 75 of the drying duct 10.

At this time, as the blowing fan 85 and the heater 75 are operated, the blowing fan 85 blows hot air.

The hot air hits the inclined portion of the door glass 2a by the guide of the drying duct 10 and flows into the drum 40 through the suction port 31.

The hot air in the drum 40 heats the laundry to evaporate the moisture contained in the laundry. At this time, the drum 40 is rotated at a low speed to stir the laundry, so that the laundry is heated evenly, thereby evaporating moisture. Help

The evaporated water is discharged through the condensation duct 20 while being contained in the air.

Then, by spraying water from the water supply 7 of the condensation duct 20, moisture in the air is removed.

The air thus dried is introduced into the drying duct 10, and the laundry is dried while repeatedly performing this series of processes.

However, since the drum washing machine according to the prior art does not use the heater installed in the duct for other purposes, when the drying operation is not performed, the heater is not driven, and thus the utility of the washing machine is lowered, and a separate preliminary heating is performed when washing water is supplied. It is difficult to reduce the number of parts because the heater is installed, there is a problem that takes a lot of material costs.

The present invention has been made to solve the above problems of the prior art, the chamber is installed on the circumferential surface of the duct, the water supply pipe is supplied with the wash water is communicated to the chamber, by the heater of the duct while the wash water passes inside the chamber It is an object of the present invention to provide a washing water preheating device for a drum washing machine in which preheating can be performed.

Washing machine preheating device for a drum washing machine according to the present invention for solving the above problems forms a predetermined space, the front is opened, the cabinet is installed in the door, the door is installed in the door, the laundry is formed in a predetermined space A tub, which is rotatably installed inside the tub, has a plurality of hole parts formed therein to contain laundry, a driving device installed in the tub, connected to the drum, and installed in communication with the tub so that air in the tub is A duct to be circulated, a blowing fan and a heater installed inside the duct, a circumferential surface of a portion of the duct, a chamber forming a predetermined space, a pump installed in a water supply pipe and a water supply pipe connected to one side of the chamber, When the supply of washing water is started through the supply pipe and valve connected between the other side of the chamber and the tub and the water supply pipe, power is supplied to the heater. It is characterized by containing a control unit such that the number of heating a fresh water wash in the chamber.

Hereinafter, with reference to the accompanying drawings an embodiment of a washing water preheating device for a drum washing machine according to the present invention will be described in detail.

2 is a cross-sectional view showing a drum washing machine according to the present invention, Figure 3 is a side view showing a washing machine preheating device for a drum washing machine according to the present invention, Figure 4 is a washing machine preheating device for a drum washing machine according to the present invention It is a sectional view shown.

Washing water preheating device for a drum washing machine according to the present invention forms a predetermined space, the front is opened, the cabinet 110 is installed with a door, the door 112 is installed inside, the tub is formed in a predetermined space containing the wash water ( 120, a drum 122 rotatably installed inside the tub 120, a plurality of hole parts are formed to contain laundry, and a driving device installed on the tub 120 and connected to the drum 122. 124, a duct 130 installed in communication with the tub 120 to circulate air in the tub 120, a blowing fan 132 and a heater 134 installed in the duct 130. And a pump 152a installed at a circumferential surface of a portion of the duct 130 and forming a chamber 150, a water supply pipe 152 and a water supply pipe 152 connected to one side of the chamber 150. ), A supply pipe 154 and a valve 154a connected between the other side of the chamber 150 and the tub 120, and When the supply of the washing water is started through the water supply pipe 152, a power supply is applied to the heater 134 to include a control unit 158 configured to heat the washing water fresh inside the chamber 150.

Thus, when the washing operation is started, the pump 152a is driven and the washing water is supplied along the water supply pipe 152. The washing water introduced into the cabinet 110 is collected in the chamber 150, and the washing of the pump 152a is performed. At the same time as driving, power is applied to the heater 134 by a signal of the controller 158 so that the fresh water washed in the chamber 150 is heated to a predetermined temperature or more.

Here, the chamber 150 is provided with a water temperature sensor 156 on one side to allow the valve 154a to open when the wash water is heated above a predetermined temperature. Washing water is sprayed into the tub 120 and the drum 122 is made of the laundry.

As shown in FIG. 5, the supply pipe 154 extends toward the opening side of the drum 122 and a nozzle 154b is installed at an end thereof so that the washing water heated to a predetermined temperature or more can be sprayed onto the laundry.

Looking at the operation of the washing machine preheating device for a drum washing machine according to the present invention configured as described above are as follows.

First, when power is supplied to the washing machine and the washing operation is started, the pump 152a is driven according to the signal of the controller 158 to supply the washing water through the water supply pipe 152.

At this time, the wash water is fresh water in the chamber 150, the power is applied to the heater 134 installed in the duct 130, the wash water is heated to a predetermined temperature or more.

The temperature of the washing water heated by the heater 134 is detected by the water temperature sensor 156, and when the temperature rises above the set temperature of the water temperature, the valve 154a is opened in response to a signal from the controller 158 to supply the supply pipe 154. Washing water flows to the tub 120 and the opening side of the drum 122, and is evenly sprayed into the drum by the nozzle 154b to form the laundry.

As a result, the washing water is heated by a heater installed in the duct without a separate heating device, thereby forming a washing machine preheating device for the drum washing machine.

Washing water preheating device for a drum washing machine according to the present invention configured as described above is the wash water is fresh water in the chamber installed on the circumferential surface of the duct, power is applied to the heater installed in the duct, the washing water supplied to the tub and drum more than a certain temperature By being preheated and supplied, there is an advantage that the packing of the laundry can be achieved without a separate heating device, and at the same time, the number of parts is reduced and the unit price of the product is lowered.

In addition, the washing water heated to a predetermined temperature or more is sprayed into the drum by the nozzle, there is an advantage that can be easily carried out to perform a clean washing operation.

Claims (3)

A cabinet forming a predetermined space and having a front surface opened and having a door; A tub installed inside the door and having a predetermined space in which washing water is contained; A drum rotatably installed inside the tub and having a plurality of holes formed therein to accommodate laundry; A driving device installed at the tub and connected to the drum; A duct installed in communication with the tub to circulate air in the tub; A blowing fan and a heater installed inside the duct; A chamber installed at a circumferential surface of a portion of the duct and forming a predetermined space; A pump installed in the water supply pipe and the water supply pipe connected to one side of the chamber; A supply pipe and a valve connected between the other side of the chamber and the tub; And a control unit for supplying power to the heater when the supply of the washing water is started through the water supply pipe to heat the washing water fresh inside the chamber. The method of claim 1; The chamber is a washing machine preheating device for a drum washing machine, characterized in that the water temperature sensor is installed on one side of the chamber so that the valve is opened when the washing water is heated above a predetermined temperature. The method of claim 1; The supply pipe washing machine preheating device for a drum washing machine, characterized in that the nozzle is installed at the end corresponding to the drum.

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