JPH06154128A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent a motor fan from overheat without hindering the supply of air to the motor fan by forming a vent hole in a radiator plate while disposing the radiator plate mounted on a heat generating parts for controlling the motor fan in a position corresponding to a suction port of the motor fan. CONSTITUTION:A vacuum cleaner has a motor unit 6 disposed adjacent to the inside of a vacuum cleaner body 1 from an opening in the upper surface of the vacuum cleaner body 1 to collectively catch dust taken in through a suction port 2 in a dust collecting bag 5 by the operation of the motor fan 10 received in a motor fan receiving chamber 9. The electrification of the motor fan 10 is controlled through electronic parts 12 which radiate generated heat through a radiator plate 13 mounted on the electronic parts 12. Then, the radiator plate 13 is disposed in a position corresponding to a vent hole 11 of the motor fan 10 and fixedly screwed to the bottom surface of the receiving chamber 9 through a packing 14. Also, the radiator plate 13 is formed with a plurality of vent holes 15 not to hinder the supply of air to the motor fan 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner having a control board for controlling an electric blower and a radiator plate attached to the control board.

[0002]

2. Description of the Related Art Conventionally, an electric vacuum cleaner having a dust collecting chamber and an electric blower housing chamber for accommodating an electric blower generally has electronic parts for controlling the electric blower. Since it is easy to overheat, a heat sink is attached to the electronic component, and this heat sink is positioned in the air flow path for cooling.

In order to improve the cooling efficiency of the radiator plate, it is desirable to dispose the radiator plate near the intake port of the electric blower with the largest amount of cold outside air. However, the radiator plate blocks the intake port of the electric blower. If it is installed in the electric blower, the flow of the air sucked into the electric blower is obstructed, so that there is a problem that the electric blower overheats.

Therefore, the heat radiating plate must be arranged at a position separated from the exhaust port or the intake port of the electric blower, and when it is arranged on the exhaust side of the electric blower, the air is overheated by the electric blower. Therefore, the cooling efficiency of the heat dissipation plate is poor, and when the heat dissipation plate is placed at a position away from the intake port, the airflow volume of the air hitting the heat dissipation plate is relatively small, resulting in poor cooling efficiency of the control board. There was a flaw.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric vacuum cleaner capable of improving the cooling efficiency of heat-generating components without reducing the suction force.

[0006]

According to the present invention, there is provided a cleaner main body having a dust collection chamber and an electric blower storage chamber for storing an electric blower, a heat generating component for controlling the electric blower, and a heat generating component. A heat radiating plate to be attached, the heat radiating plate being arranged at a position corresponding to an air intake hole of the electric blower, and a vent hole being formed in the heat radiating plate.

Further, according to the present invention, there is provided a cleaner main body in which a dust collecting chamber and an electric blower housing chamber for accommodating an electric blower are arranged in a vertical direction, a heat generating component for controlling the electric blower, and an attachment to the heat generating component. And a heat dissipation plate disposed at a position corresponding to an intake hole of the electric blower, and a ventilation hole is formed in the heat dissipation plate.

[0008]

According to the present invention, when the electric blower is driven, the dust contained in the air sucked from the suction port is accumulated in the dust collecting bag, and the air is guided to the electric blower storage chamber. At this time,
Although the heat sink is arranged so as to cover the intake hole of the electric blower, the air sucked into the cleaner body passes through the vent hole of the heat sink because the heat sink has multiple vent holes, so the electric blower Is sucked into.

[0009]

An embodiment of the present invention will be described in detail below with reference to the drawings.

Reference numeral 1 denotes a metal cleaner body having an opening on the upper surface and having an internal space as a dust collecting chamber. A suction port 2 is formed on a side surface thereof, and a bellows hose (not shown) is detachably connected to the suction port 2. It is supposed to be done. A clamp 3 is formed in the vicinity of the suction port 2 so that a mouth plate of a dust bag 5 to be described later is locked in a state of being pressed against the suction port 2.

Reference numeral 4 denotes a resin-made dust collecting basket housed in the cleaner body 1, and a dust collecting bag 5 is housed in the dust collecting basket 4.

Reference numeral 6 denotes a motor unit which is disposed so as to face the inside of the cleaner body 1 through an upper opening of the cleaner body 1.
It is detachably attached to the cleaner body 1 by an engagement member (not shown). Reference numeral 7 denotes a ventilation portion formed on the bottom surface of the motor unit 6. By disposing a filter 8 in the ventilation portion 7, fine dust in the air that has passed through the dust collecting bag 5 is filtered, and an electric blower to be described later. Dust is prevented from entering the storage chamber 9.

Reference numeral 9 denotes an electric blower storage chamber formed in the motor unit 6 for accommodating the electric blower 10.
An opening 11 is formed at a position corresponding to the ventilation part 7.

Reference numeral 12 denotes an electronic component for controlling the electric blower 10, which has a heat radiating plate 13 attached thereto. The heat radiating plate 13 covers the opening 11 of the electric blower storage chamber 9 in the electric blower storage chamber 9. It is screwed to the bottom through packing 14. Reference numeral 15 is a ventilation hole formed in the heat dissipation plate 13 at a position corresponding to the intake hole 16 of the electric blower 9 and the opening 11 of the electric blower storage chamber 9.

Reference numeral 17 denotes a caster table on which the cleaner body 1 is placed. Reference numeral 18 is a grounding member connected to the cleaner body 1 to discharge static electricity.

When the electric blower 10 is driven, the dust in the air sucked from the bellows hose (not shown) connected to the suction port 2 is accumulated in the dust collecting bag 5 and the ventilation portion 7 of the motor unit 6 is driven. Finer dust is filtered by the provided filter 8 and guided to the electric blower storage chamber 9. At this time, the radiator plate 13 is arranged so as to cover the intake hole 16 of the electric blower 10, but the radiator plate 13 has a plurality of ventilation holes.
Since the vacuum cleaner 15 is formed, the air sucked into the cleaner body 1 passes through the heat dissipation plate 13 and is sucked into the electric blower 10.

Therefore, the heat radiating plate 13 is used as an air intake hole of the electric blower 10.
By arranging so as to cover 16 the air sucked into the cleaner body 1 can be efficiently brought into contact with the heat dissipation plate 13 to improve the heat dissipation efficiency, and the heat dissipation plate 13 can be provided with ventilation holes.
Since the air blower 15 is formed, it is possible to prevent overheating of the electric blower without interrupting the air supply to the electric blower 10.

[0018]

According to the present invention, by disposing the heat radiating plate in a state of covering the air intake hole of the electric blower, the air sucked into the cleaner body is efficiently brought into contact with the heat radiating plate to improve the heat radiating efficiency. In addition, since the ventilation holes are formed in the heat radiating plate, it is possible to prevent the electric blower from overheating without hindering the air supply to the electric blower.

[Brief description of drawings]

FIG. 1 is a sectional view of an electric vacuum cleaner showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the relevant part.

FIG. 3 is a view of the heat dissipation plate and the electric blower as viewed from below.

[Explanation of symbols]

 1 Vacuum cleaner body 9 Electric blower storage room 10 Electric blower 12 Exothermic parts 13 Heat sink 16 Air intake hole

Claims (2)

[Claims] 1. A vacuum cleaner body having a dust collection chamber and an electric blower storage chamber for storing an electric blower, a heat generating component for controlling the electric blower, and a heat radiating plate attached to the heat generating component, An electric vacuum cleaner, wherein the heat dissipation plate is arranged at a position corresponding to an intake hole of the electric blower, and a ventilation hole is formed in the heat dissipation plate. 2. A cleaner body in which a dust collection chamber and an electric blower storage chamber for storing an electric blower are arranged in a vertical direction, a heat generating component for controlling the electric blower, and a heat radiating plate attached to the heat generating component. An electric vacuum cleaner comprising: a heat dissipation plate disposed at a position corresponding to an intake hole of the electric blower; and a ventilation hole formed in the heat dissipation plate.