RU81732U1 - WASHING / DRYING MACHINE - Google Patents

Abstract

ESSAY

The washer / dryer that is the subject of this utility model protects the user from the strong current generated as a result of static electricity during operation and minimizes electromagnetic radiation.

(Fig. 2)

Description

2420-155353RU / 032

WASHING / DRYING MACHINE

DESCRIPTION

This utility model relates to a washing / drying machine, which protects the user from strong electric current generated as a result of static electricity during operation, and minimizes electromagnetic radiation.

Washing machines are grounded to protect the user from electric shock.

According to the prior art, the machine is grounded to an electric motor. Static electricity on the drum and tank is transmitted to the engine and to the housing using a drive belt, which includes electrically conductive material and a ground wire, respectively. Motor contact with the ground wire causes a high level of interference. In order to avoid interference on the phase and neutral wire caused by a high level of interference in the grounding wire, a filter including an inductance is used at the power supply point of the washing machine. Electromagnetic radiation cannot be reduced to an acceptable level in accordance with standards without the use of inductance. These types of filters are bulky and expensive.

The purpose of this utility model is to create a washing / drying machine that protects the user from strong electric current generated as a result of static electricity during operation, and minimizes electromagnetic radiation.

This goal is achieved by creating a washing / drying machine, including a housing, a tank, for performing a washing cycle, a drum in the tank, rotating around its own axis, which is loaded with laundry, an engine that preferably rotates the drum, a drive belt that transmits the rotation of the engine on the drum, the shaft of the drum around which the drum rotates, and a grounding device connected to the housing, providing a discharge of static electricity to the drum. According to a utility model, the washing / drying machine has a drive belt that is made of non-conductive material to prevent the transmission of static electricity to the motor and reduces interference in the ground wire due to the motor being in an insulated position, one or more plastic bearings mounted on the bottom engine parts, and a capacitive RF filter that minimizes electromagnetic radiation at the input of the supplied electricity.

Preferably, the capacitive RF filter includes asymmetric (located between the phase and the neutral wire) and symmetric (located between the phase or neutral wire and the ground wire) capacitors

Preferably, a grounding device connected to the drum shaft is used to discharge the drum static electricity to the housing, and the tank is made of plastic.

Preferably, a grounding device connected to any point on the tank is used to transmit static electricity, which is generated on the drum and transferred to the tank, and the tank is made of metal.

Further, the present utility model will be described in more detail with reference to the accompanying drawings, in which:

figure 1 is a perspective view of a washing / drying machine,

2 is a schematic view of a washing / drying machine including a metal tank,

figure 3 is a schematic view of a washing / drying machine including a plastic tank,

4 is a schematic section of an RF (radio frequency) filter.

The details shown in the drawings are as follows: 1 - washing / drying machine; 2 - case; 3 - tank; 4 - drum; 5 - engine; 6 - a driving belt; 7 - drum shaft; 8 - support; 9 - RF filter; and 10 is a grounding device.

The washing / drying machine 1, which is the subject of this utility model, includes a housing 2, a tub 3, preferably made of plastic, in which a washing cycle is performed, a drum 4 in a tub 3, rotating around its own axis, into which laundry is loaded, an engine 5, preferably a sequential field brush that rotates the drum 4, a drive belt 6 that transmits rotation from the engine 5 to the drum 4 and which is made of non-conductive material to protect against the transmission of static electricity on the engine 5 to the housing 2, one or more bearings 8, preferably made of plastic, which is attached to the bottom of the engine 5 and is used to protect against static electricity from the engine 5 on the housing 2, the drum shaft 7 on which the drum 4 rotates, an RF filter 9, which reduces electromagnetic radiation in the place of power supply, and a grounding device 10, providing a discharge of static electricity on the drum 4.

The RF filter 9 is a capacitive filter including asymmetrical (located between phase P and neutral wire N) and symmetric (located between phase P or neutral wire N and ground wire PE) capacitors.

The PE ground wire from the power source is connected to the housing 2. The motor 5 is in an isolated position due to the drive belt 6 and the support 8. Static electricity on the motor 5 is not transmitted to the housing 2. Therefore, interference in the PE ground wire is reduced, and the RF filter 9 with a simple structure is used to reduce electromagnetic radiation.

Since the tank 3 is made of plastic, static electricity on the drum 4 is discharged to the housing 2 due to the grounding device 10 connected to the shaft 7 of the drum.

In another embodiment of the utility model, the tank 3 is made of metal. In this embodiment, static electricity on the drum 4, which is transmitted to the tank 3, is transmitted to the housing 2 due to the grounding device 10 connected to any point on the tank 3.

In the washing / drying machine that is the subject of this utility model, the static electricity on the engine 5 is not transmitted to the housing 2 due to the non-conductive drive belt 6 and the plastic supports 8, and the electromagnetic radiation is reduced by using only a single-capacitor RF filter 9. This reduces the cost of manufacturing the machine.

Claims (4)

1. A washing / drying machine including a housing, a tank for performing a washing cycle, a drum in the tank rotating about its own axis into which laundry is loaded, an engine that preferably rotates the drum, a drive belt that transfers engine rotation to the drum, the shaft of the drum, around which the drum rotates, and a grounding device connected to the housing, providing a discharge of static electricity to the drum, characterized in that it has a drive belt, which is made of non-conductive material to prevent the transmission of static electricity from the motor to the chassis and reduces interference in the ground wire due to the motor being in an isolated position, one or more plastic bearings that are mounted on the bottom of the motor, and a capacitive RF filter that minimizes electromagnetic radiation at the input supplied electricity. 2. The washing / drying machine according to claim 1, characterized in that the capacitive RF filter includes asymmetric (placed between the phase and the neutral wire) and symmetric (placed between the phase or neutral wire and the ground wire) capacitors 3. The washing / drying machine according to claim 1, characterized in that the grounding device connected to the drum shaft is used to discharge the drum static electricity to the housing, and the tank is made of plastic. 4. The washing / drying machine according to claim 1, characterized in that the grounding device connected to any point on the tank is used to transmit static electricity, which is generated on the drum and transferred to the tank, and the tank is made of metal.