Shroud-Type Dishwashing Machine With Condensation Precipitation Device

Abstract

A shroud-type dishwashing machine for commercial use has a lower frame, a dishwashing chamber and a shroud which can be opened and at least partially surrounds the dishwashing chamber. A condensation precipitation device is connected to the dishwashing chamber when the shroud is closed. This condensation precipitation device is equipped with at least one fan for sucking vapor and/or air out of the closed dishwashing chamber, and also has at least one condensation surface for condensation of vapor.

1 . A dishwashing machine for commercial use, the dishwasher comprising a lower frame, a dishwashing chamber, a shroud at least partially surrounding the dishwashing chamber, which shroud can be opened, at least one condensation precipitation device connected to the dishwashing chamber when the shroud is closed, the condensation precipitation device having at least one fan for sucking vapor and/or air out of the closed dishwashing chamber, and at least one condensation surface for condensation of vapor. 
     
     
         2 . The dishwashing machine as claimed in  claim 1 , wherein the condensation precipitation device is accommodated entirely or partially in a cover part of the shroud. 
     
     
         3 . The dishwashing machine as claimed in  claim 1 , wherein the condensation precipitation device is accommodated entirely or partially in a rear wall and/or in a frame which connects the lower frame and the shroud. 
     
     
         4 . The dishwashing machine as claimed in  claim 1 , wherein the condensation precipitation device is accommodated entirely or partially in the lower frame. 
     
     
         5 . The dishwashing machine as claimed in  claim 1 , wherein the connection of the condensation precipitation device has at least one connection to the shroud. 
     
     
         6 . The dishwashing machine as claimed in  claim 5 , wherein the connection is arranged in the area of the cover of the shroud. 
     
     
         7 . The dishwashing machine as claimed in  claim 5 , wherein the connection and the condensation precipitation device are connected to one another by a telescopic hose or a flexible hose. 
     
     
         8 . The dishwashing machine as claimed in  claim 5 , wherein the shroud comprises at least one flow guiding device which is designed to promote a uniform flow through the dishwashing chamber, with the flow guiding device having flow laminates and/or a perforated intermediate cover. 
     
     
         9 . The dishwashing machine as claimed in  claim 1 , wherein the condensation precipitation device is designed such that at least a portion of the flow of the air sucked in from the dishwashing chamber is fed back into the dishwashing chamber again after flowing through the condensation precipitation device. 
     
     
         10 . The dishwashing machine as claimed in  claim 1 , wherein the shroud comprises a cover part and a shroud casing, with the shroud being designed such that the cover part and the shroud casing are at least partially separated from one another upon opening of the shroud, with the cover part preferably remaining essentially in a fixed position. 
     
     
         11 . The dishwashing machine as claimed in  claim 10 , wherein the condensation precipitation device is at least partially arranged in the fixed-position cover part. 
     
     
         12 . The dishwashing machine as claimed in  claim 1 , wherein the condensation precipitation device comprises at least one chamber with at least one inlet and at least one outlet, and at least one condensation outflow. 
     
     
         13 . The dishwashing machine as claimed in  claim 12 , wherein the fan is connected to the inlet and/or to the outlet. 
     
     
         14 . The dishwashing machine as claimed in  claim 12 , wherein the chamber defines at least one flow channel. 
     
     
         15 . The dishwashing machine as claimed in  claim 14 , wherein the fan is connected to the flow channel. 
     
     
         16 . The dishwashing machine as claimed in  claim 1 , wherein the condensation precipitation device comprises at least one of the following condenser elements:
 at least one cold plate;   at least one cold plate which is sprayed with a cooling medium;   at least one heat exchanger through which a cooling medium flows, in particular a plate-type heat exchanger and/or a serpentine cooling-coil type heat exchanger.   
     
     
         17 . The dishwashing machine as claimed in  claim 16 , wherein the at least one condenser element has at least one of the following arrangements:
 the at least one condenser element is aligned at an angle to the horizontal;   the at least one condenser element has a laminate arrangement;   the at least one condenser element has a meandering arrangement;   the at least one condenser element has a parallel arrangement of at least two condenser elements.   
     
     
         18 . The dishwashing machine as claimed in  claim 17 , wherein the condensation precipitation device comprises at least one condenser element which can be cooled by water, in which case at least one first condenser connection of the condenser element is connected to a fresh water supply and with at least one second condenser connection of the condenser element being connected to a reservoir tank in the dishwashing machine. 
     
     
         19 . The dishwashing machine as claimed in  claim 18 , further comprising control means controlling operation of the dishwashing machine to carry out a dishwashing program including at least one program step in which the condensation precipitation device sucks vapor and/or air out of the dishwashing chamber. 
     
     
         20 . The dishwashing machine as claimed in  claim 19 , wherein the control means comprises means for performing at least one at sucking-out program step out at the end of the dishwashing program. 
     
     
         21 . The dishwashing machine as claimed in  claim 19 , further comprising a final washing water tank, and wherein plates and dishes which are accommodated in the dishwashing chamber are finally washed using a final washing liquid from the final washing water tank in at least one final washing program step, and means connecting the condensation precipitation device to the final washing water tank whereby cooling water heated in a subsequent sucking-out program step in the condensation precipitation device by vapor and/or air from the dishwashing chamber is passed into the final washing water tank. 
     
     
         22 . The dishwashing machine as claimed in  claim 21 , wherein the final washing water tank comprises a two-level control, and wherein the control means is operable to carry out the final washing program step until the level in the final washing water tank has reached a lower level, and with the subsequent sucking-out program step being carried out until the level in the final-washing water tank has reached an upper level. 
     
     
         23 . The dishwashing machine as claimed in  claim 1  further comprising at least one liquid valve for controlling a supply of a cooling medium, and wherein the control means is operable to synchronize the timing for operation of the liquid valve and for operation of the fan. 
     
     
         24 . The dishwashing machine as claimed in  claim 23 , wherein the liquid valve can be opened and the fan can be started essentially at the same time.