DE8716760U1 - Cooling air guide and discharge device for electric motor-operated mouthpieces - Google Patents

Abstract

A cooling air guiding and diverting system for electrically driven floor cleaning devices, in particular nozzles thereof, which have a separate cooling air guiding system of the electric motor and an operating air guiding system which is independent thereof, wherein air guiding systems feeding cooling air from a dirt-free zone to the electrical motor emitting fine dust are arranged in the top part of the housing and air outlet openings, making the emerging cooling air accessible to the negative pressure of the operating air of the dirt intake opening in the floor region, are arranged in the bottom part of the housing. <IMAGE>

Description

Vorwerk S Co, InterhoLding GmbH. Description

_Cooling and discharge guide device for electrically operated components

The innovation concerns a cooling air guide and discharge device for electric motor-operated mouthpieces for floor care devices, which has a separate cooling air guide for the electric motor and an independent working air guide

you know *

Such cooling air guiding and discharge devices are known in that cool ambient air is sucked in through separate air inlet slots, then guided past the component to be cooled and released back into the ambient air through a separate outlet slot.

In the known solutions, the dirt generated by the device, such as coal dust abrasion, is carried out via the cooling air, so that this cooling air is heavily laden with fine dust, which in turn must be separated using large-area fine filters; or the fine filter must be replaced during the device's service life.

The innovation now has the task of avoiding the above-mentioned disadvantages and creating a fine dust extraction system that does not require any additional technical means for separation.

This object is achieved according to the characterizing part of the claim. A further advantageous embodiment is set out in claim 2.

The advantages that can be achieved with this solution are in particular

.-J- -* ^. -&iacgr; .-. ji ^ &Pgr; A-in m A *■ W &lgr; r» . ¹ J &lgr;&igr;&igr; af« &igr; · &lgr;&lgr;f»it£>/-*Ar>i"iC>*At'>Ae&Ggr;.&ogr; r &idigr; t r\ ri £* r·

\J &Ogr; &Idigr; IM^ "&agr;&idiagr;&iacgr;&iacgr;» lit Ulli. \J \. J if. U^ &igr; viiiy UV.J^^tUi^i.^i.s·«* -&ngr;>^.·&ugr;&idiagr;. >^%*&tgr;_&idiag;

Mouthpiece .yänzLich without additional filter u.-.ti without a

.· &Iacgr; r W er < \ Co. I " ter - &ogr; I &Iacgr; i -> ~ G -ib H .

additional lifter. This is an advantage for the endoe user as no additional lifting is necessary.

The 'i eure ti ng is illustrated by the drawing and is described in more detail in the following text.

It shows:

F i &sfgr; . 1: a section through a

Vacuum cleaner nozzle to which a vacuum cleaner is connected.

In the course of the competition, the requirements for the degree of separation of the fine dust particles in electrorotor-operated sod laying devices are becoming increasingly greater. For this reason, electrostatically operating filters or suspended matter filters are normally arranged after the actual filtration process on such devices.

U- for the complete floor laying system, &zgr; . 3 . a vacuum cleaner (2) -with upstream additional device (1), to create a satisfactory solution, according to Fig. 1, the above-mentioned upstream additional device (1) is connected to the vacuum cleaner (2) via the plug connection (15), via the working air channel (3) the dust-laden working air (L) is led from the floors (4) into the c;n vacuum cleaner (2) own filter device (5).

To cool the motor (6), the cooling air (11) is directed through an opening (7) in the protection-free area (13) past the motor (6) by the negative pressure of the working air in the suction area (S) into the air duct (3). In this process, all fine dust particles I emitted by the additional device (1), such as those from coal dust abrasion, are transported by the electric motor (1) via the outlet openings (9) into the filter device (5) of the vacuum cleaner (2) and separated there, so that no additional filter devices are required for the cooling air (11) of the floor care device (12).

KF. 1 G3G 434 Ref.:'"G S7'16 76Ö.3"' 3. "ärz 198S

Vorwerk Si, Co. Inter hol (J ing G &pgr;. b H .

The outlet openings (?) are arranged in such a way that the fine dust particles are fed directly into the suction area (8) and thus into the dirt intake opening (14) and are dispersed with the working air (L).

ANR 1 030 434 Ref.: G 87 &Iacgr;'6 '760.3"' '3 March 1988

Claims (1)

Vorwerk 8 Co. Intel-holding GmbH. Claim for protection Cooling air guide and discharge device for electric motor-operated floor care devices, in particular mouthpieces thereof, which have a separate cooling air guide for the electric motor and an independent working air guide, characterized in that air guides (7) supplying the fine dust-emitting electric motor (6) from a dirt-free zone (13l· cooling air (11) are arranged in the upper part of the housing (16), and air outlet openings (9) making the emerging cooling air (CII) accessible to the negative pressure of the working air (L) of the dirt intake opening (4) in the floor area (4) are arranged in the lower part of the housing.