CN1754018A - washer/dryer - Google Patents

Abstract

The washer/dryer (1) that is the subject of this invention can help users avoid high currents generated by static electricity during operation and minimize electromagnetic radiation.

Description

washer/dryer

technical field

The present invention relates to a washing/drying machine that enables a user to avoid high current generated by static electricity and minimize electromagnetic radiation during operation.

The washing machine is grounded to prevent danger to users.

Background technique

In the prior art, the motor is grounded. Static electricity on the drum and tub can be conducted to the motor and main body with the help of a belt that includes conductive material and a ground wire, respectively. Motors connected to ground cause high noise levels. In order to avoid noise on the phase and neutral wires caused by high noise levels on the ground, a filter including an inductance is used at the inlet of the electrical connection of the washing machine. Without the use of inductors, electromagnetic emissions cannot be reduced to acceptable levels for compliance with standards. These types of filters are bulky and expensive.

Contents of the invention

An object of the present invention is to provide a washing/drying machine that enables a user to avoid high current generated by static electricity and minimize electromagnetic radiation during operation.

Said washing/drying machine implemented in order to achieve the above objects of the present invention is explained in the following drawings, in which:

Description of drawings

Fig. 1 is a perspective view of a washing/drying machine,

Figure 2 is a schematic diagram of a washing/drying machine including a metal tub,

Figure 3 is a schematic diagram of a washing/drying machine including a plastic tub,

Figure 4 is a schematic diagram of an RF (high frequency) filter,

The components shown in the figure are listed as follows;

1. Washing/drying machine

2. Subject

3. Barrel

4. Drum

5. Motor

6. Belt

7. Roller shaft

8. Support

9. RF filter

10. Grounding line

Detailed ways

The washing-drying machine (1) which is the subject of the invention comprises a main body (2), a tub (3) preferably made of plastic material in which the washing cycle The drum (4), the electric motor (5) preferably of serial nature and brushes that rotate the drum (4), transmits the motion of the motor (5) to the drum and is made of non-conductive material to prevent damage to the motor (5) Belt (6) for the transfer of static electricity to the body (2), one or more supports preferably made of plastic material mounted on the bottom of the motor (5) and used to prevent the transfer of static electricity on the motor (5) to the body (2) (8), the drum shaft (7) around which the drum (4) rotates, the RF filter (9) to reduce the electromagnetic radiation of the power inlet and the grounding line (10) to provide electrostatic discharge on the drum (4).

RF filters (9) are capacitive filters, including asymmetrical (located between phase line (P) and neutral (N)) and symmetrical (located between phase line (P) or neutral (N) and ground Line (PE) between) capacitance.

The ground wire (PE) from the power supply is connected to the main body (2). With the help of the belt (6) and the support (8), the motor (5) is in an isolated position. Static electricity on the motor (5) is not conducted to the main body (2). Therefore the noise on the ground (PE) is reduced and the RF filter (9) of simple construction is used to minimize the electromagnetic radiation.

Since the bucket (3) is made of plastic material, the static electricity on the drum (4) is discharged to said body through the ground line (10) connected to the drum shaft (7).

In another embodiment of the invention, the bucket (3) is made of metal material. In this embodiment, the static electricity on the drum (4) conducted to the tub (3) is conducted to the main body (2) through a ground connection to any point on the tub (3).

In the washing/drying machine that is the subject of the invention, the static electricity on the motor (5) is not conducted to the main body (2) by means of a non-conductive belt (6) and a plastic support (8), by using only one capacitive RF Filters reduce electromagnetic radiation. This reduces production costs.

Claims (4)

1. a washing/drying machine (1), it comprises main body (2), carry out the bucket (3) of wash cycle therein, in bucket (3) around the cylinder (4) of the loading clothing of himself axis rotation, preferably make the motor (5) of cylinder (4) rotation, the motion of motor (5) is passed to the belt (6) of cylinder (4), cylinder (4) is around the drum shaft (7) of its rotation, go up the ground path (10) of static discharge with the cylinder (4) that provides that is connected with described main body (2), it is characterized in that also having belt (6), one or more plastic supporting pieces (8) and capacitive character RF wave filter (9), described belt (6) is made by non-conductive material so that prevent the static on the motor (5) and is delivered to described main body (2), and because motor (5) is in the insulation position, thereby the noise on the ground wire (PE) is reduced, described one or more plastic supporting pieces (8) is installed in the bottom of motor (5), and described capacitive character RF wave filter (9) minimizes the electromagnetic radiation at power import place.

2. washing/drying machine according to claim 1 (1) is characterized in that capacitive character RF wave filter (9) comprises asymmetric (being positioned between the phase line (P) and the neutral conductor (N)) and symmetry (being positioned between the phase line (P) or the neutral conductor (N) and the ground wire (PE)) electric capacity.

3. washing/drying machine according to claim 1 (1) is characterized in that the ground path (10) that is connected with drum shaft (7), and wherein it is used for discharging static on the cylinder (4) to main body (2), and bucket (3) is made by plastic material.

4. washing/drying machine according to claim 1 (1), it is characterized in that going up the ground path (10) that a bit is connected arbitrarily with bucket (3), wherein it is used for the static that conduction is formed on the cylinder (4) and is transmitted to bucket (3), and bucket (3) is made by metal material.

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