Dishwasher

Abstract

A hood type dishwasher ( 1 ) having a treatment chamber closeable by a hood ( 2 ), which can be moved in the vertical direction relative to a machine frame of the dishwasher ( 1 ), wherein, in the closed state of the treatment chamber, the treatment chamber is delimited by inner surfaces of the hood ( 2 ) and by at least one rear side wall region ( 4 ) of the machine, which is fixed to the machine frame of the dishwasher ( 1 ). The hood ( 2 ) includes a guide system for guiding the hood ( 2 ) as it moves relative to the machine frame. The guide system is of concealed design such that, at least in the open state of the treatment chamber, it is present in its entirety outside the region which, in the closed state of the treatment chamber, is defined by the inner surfaces of the hood ( 2 ) and the rear side wall region ( 4 ).

What is claimed is: 
     
         1 - 12 . (canceled) 
     
     
         13 . A box-type commercial dishwasher ( 1 ), comprising a treatment chamber, in which washware accommodated in racks can be treated in accordance with a predefined or predefinable treatment program, wherein the treatment chamber can be closed by a hood ( 2 ), which can be moved in the vertical direction relative to a machine frame of the dishwasher ( 1 ), wherein, in the closed state of the treatment chamber, the treatment chamber is completely delimited by inner surfaces of the hood ( 2 ) and/or additionally by at least one rear side wall region ( 4 ), which is fixed to the machine frame of the dishwasher ( 1 ),
 wherein   the hood ( 2 ) is assigned at least one guide system for guiding the hood ( 2 ) as it moves relative to the machine frame and the in particular rear side wall region ( 4 ), wherein the at least one guide system is of concealed design such that the at least one guide system is present outside the rear-side wall region ( 4 ).   
     
     
         14 . The dishwasher ( 1 ) as claimed in  claim 13 ,
 wherein the at least one guide system comprises at least two lateral guide systems,   which, in respect of a guide direction, are arranged in a parallel state.   
     
     
         15 . The dishwasher ( 1 ) as claimed in  claim 13 ,
 wherein the at least one guide system has at least one guide element ( 6 ) and at least one guide rail ( 5 ), which interacts with the at least one guide element ( 6 ), wherein the at least one guide element ( 6 ) is connected to the rear side wall region ( 4 ) and the at least one guide rail ( 5 ) is connected to an inner surface of the hood ( 2 ).   
     
     
         16 . The dishwasher ( 1 ) as claimed in  claim 15 ,
 wherein the at least one guide element ( 6 ) is provided in a region which, in the open state of the treatment chamber, is present between the rear side wall region ( 4 ) and the inner surface of the hood ( 2 ), to which the at least one guide rail ( 5 ) is connected.   
     
     
         17 . The dishwasher ( 1 ) as claimed in  claim 16 ,
 wherein the at least one guide element ( 6 ) is designed in the form of a guide roller, or in the form of a sliding block.   
     
     
         18 . The dishwasher ( 1 ) as claimed in  claim 15 ,
 wherein the guide system has at least two guide elements ( 6 ), which are arranged one behind the other in a guide direction.   
     
     
         19 . The dishwasher ( 1 ) as claimed in  claim 15 ,
 wherein the hood ( 2 ) is designed in the form of a hood ( 2 ) which can be moved vertically relative to the machine frame and relative to the rear side wall region ( 4 ), and wherein the at least one guide rail ( 5 ) is designed in the form of a vertically running guide rail ( 5 ).   
     
     
         20 . The dishwasher ( 1 ) as claimed in  claim 19 ,
 wherein the at least one guide rail ( 5 ) has a cross sectional geometry which complements the at least one guide element ( 6 .   
     
     
         21 . The dishwasher ( 1 ) as claimed in  claim 13 ,
 wherein the rear side wall region ( 4 ), which delimits the treatment chamber in the closed state, has an undercut free and/or edge free surface.   
     
     
         22 . The dishwasher ( 1 ) as claimed in  claim 13 ,
 wherein, with the exception of a central region of the rear-side wall region, the rear-side wall region ( 4 ), which delimits the treatment chamber in the closed state, has an undercut-free and/or edge-free surface.   
     
     
         23 . The dishwasher ( 1 ) as claimed in  claim 13 ,
 wherein the dishwasher ( 1 ) has a wash tank, which is designed, and arranged, in relation to the treatment chamber of the dishwasher ( 1 ) such that, when wash liquid and/or final rinse liquid are/is being sprayed in the treatment chamber, at least some of the liquid sprayed flows back into the wash tank under the action of gravitational force, wherein the rear side wall region ( 4 ) merges continuously into a wall region and/or base region of the wash tank.   
     
     
         24 . The dishwasher ( 1 ) as claimed in  claim 13 ,
 wherein, in the closed state of the treatment chamber, the treatment chamber is delimited laterally by the rear side wall region ( 4 ), by a first inner surface of the hood ( 2 ), said first inner surface of the hood running parallel to the rear side wall region ( 4 ), and by two parallel inner surfaces of the hood ( 2 ), said parallel inner surfaces of the hood each being adjacent to the first inner surface of the hood ( 2 ).