Batch dishwasher with waste water heat recovery

Abstract

A bath dishwasher with waste water heat recovery, comprising an individual cleaning chamber in which the items (3) to be cleaned are accommodated, a pump (6) which circulates washing liquid within the cleaning chamber, and a further pump (11) which delivers fresh water (20) , and also a boiler (9) which stores and heats fresh water (20), wherein the boiler (9) has an associated heat exchanger (18) by means of which heat is indirectly or directly transferred from waste water which is stored in a reservoir (17) to the fresh water (20) which is stored in the boiler (9).

Description

technical field [0001] The invention relates to a commercial washing machine, in particular a dishwasher, having a washing chamber in which the products to be cleaned are cleaned by a program of prewashing, washing and drying steps. Background technique [0002] In dishwashers in which the washware is not conveyed during the washing process and the washing steps are carried out according to a predetermined program, the difference between the two basic types is: [0003] Firstly, dishwashers are known which have a tank system for storing cleaning liquid, in which continuously introduced ware to be cleaned is cleaned with stored cleaning liquid, but said cleaning liquid is not discharged after the washing cycle. After the cleaning process, fresh water heated in a boiler or a first-class heater is applied to the washware via an additional rinsing system. All or part of the incoming rinse water is used to regenerate the cleaning fluid. These machines with double circuit system...

AI Technical Summary

Problems solved by technology

While effective, they also have the disadvantage of being prone to staining and lack of controllability

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