Glass sight glass windows for laundry washing and/or drying appliances

Abstract

A door ( 125, 125', 125" ) for a laundry washing and / or drying appliance ( 100 ) is proposed. The door includes a door inner frame ( 205, 205', 205" ), a door outer frame ( 210, 210', 210" ), a transparent porthole window ( 150 ) having a border portion ( 225 ) fitted between the inner frame and the outer frame. In the solution according to one or more embodiments of the present invention, the border portion of the porthole window has at least one receiving region ( 230 ) having, at least on one side thereof facing the inner frame or the outer frame, a seat ( 235 ); at least the inner frame or the outer frame has, in a portion ( 240, 250 ) corresponding to the receiving region ( 230 ) of the porthole window, at least one rib ( 245, 255 ) fitting into the seat ( 235 ) of the receiving region ( 230 ).

Description

technical field [0001] The present invention generally relates to the technical field of domestic appliances. More specifically, the invention relates to the technical field of doors for domestic appliances. More specifically, the present invention relates to a porthole window for a front loading drum type laundry washing and / or drying appliance such as a washing machine or washer / dryer, dry cleaner, dryer. Background technique [0002] A typical front loading laundry washing and / or drying appliance - such as a washing machine or dry cleaning machine designed for washing laundry (eg clothes, towels and bed linen) by using water as the main wash solution or by using other wash solutions, Or a clothes dryer - typically having a containment housing and an access door on the front side of the containment housing for inserting the laundry into a rotating drum within the appliance. Hereinafter, for the sake of brevity of explanation, a washer / dryer (ie, a washing and / or drying m...

AI Technical Summary

Problems solved by technology

In particular, there is a risk that the glass sight glass slides slightly due to its own weight from an aligned position between the frame elements towards an undesired mismatched position

[0006] Such a mismatched position of the glass sight glass can basically lead to two kinds of defects: firstly, in this case the glass sight glass can no longer accurately cover the outer casing of the washer / dryer and the rotary The dead space between the drums so that water and / or detergent can leak out or the laundry inside can be lintted during operation of the washer / dryer

[0010] This assembly first has inherent limitations that make this solution unsuitable for most modern washing machines or other appliances for domestic or industrial use

In fact, in addition to the rear fixing element and the frame, a glass sight glass cover is required (intended to prevent the user from having direct access to the glass sight glass, which can reach a rather high temperature during operation of the washing machine) Being a further fixing element (in this case the front fixing element) means making the door assembly of the washing machine heavier, which in turn causes the hinge to sink even after only a short period of use

[0011] Furthermore, as will be appreciated, the door shown and described in this document suffers from the same drawbacks as the above-mentioned drawback of misalignment of the glass sight glass; in particular, although this solution provides a certain degree of stability, But not in any operating condition of the washing machine is satisfactory

In particular, the assembly is very effective when the washing machine is powered off, i.e. when no wash cycle for laundry cleaning is performed; while the connection performance is greatly reduced when the washing machine is running, thus potentially cause slippage and misalignment between the sight glass and the frame, which in turn leads to cracking of the door in the same manner as known solutions, including that of the cited document

In fact, because of the vibrations that inevitably occur during the operation of the washing machine (for example, due to the high-speed rotational movement of the rotating drum, the water jet used to clean the laundry, or the discharge of the water-detergent mixture when rinsing the laundry), it is The compressed ledge is subjected to possibly lateral compression and decompression which can substantially reduce the effectiveness of the door assembly thereby relaxing the ledge and thus the glass Viewport slides longitudinally or glass breaks

For this reason, the solutions disclosed in the cited documents do not allow to obtain high-performance doors for washing machines

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