DISH WASHER

• US 3,586,011 A
• Filed: 08/04/1969
• Issued: 06/22/1971
• Est. Priority Date: 08/04/1969
• Status: Expired due to Term

• Current Assignee: Mazza Lamberto
• Original Assignee: Mazza Lamberto
• Inventors: MAZZA LAMBERTO
• Application Number:
  US04/847,166
• Time in Patent Office: 687 Days
• US Class Current: 134/57.00D
• CPC Class Codes: A47L 15/4236 Arrangements to sterilize or disinfect dishes or washing liquids A47L15/4234 takes precedence
• CPC Class Codes: A47L 15/4248 Arrangements for dividing the tub compartment, e.g. for simultaneous washing of delicate and normal crockery

Abstract

The washing chamber of a dishwashing machine is divided in two zones, one for dishes, glasses and the like, the other for metallic saucepans and the like; the jets of solution in both zones are fed from the same source, and the jets in the first zone are closed automatically when the temperature of the solution reaches a certain degree, so that the solution is successively sprayed at a higher temperature and higher pressure only on the metallic saucepans.

Claims

1. A dishwasher, both domestic and industrial, in which the wash chamber is subdivided by a baffle into two wash zones for the loading of delicate crockery such as plates, earthenware and the like and the loading of cooking pans respectively, each of said zones being provided with at least one sprayer, the sprayers being fed by a single wash pump, and in which an interception member is provided controlled by a thermostat which senses the temperature of the wash solution in order to exclude the flow of solution heated above a predetermined temperature to the delicate crockery in said corresponding zone.

2. A dishwasher as claimed in claim 1, in which said pump feeds said sprayers through parallel tubes and said interception member is situated in the tube which feeds the sprayer or sprayers provided for the zone intended for washing delicate crockery.

3. A dishwasher as claimed in claim 1, in which each sprayer of the zone for washing delicate crockery is provided with an interception member which moves between two positions, in one of which it intercepts the jets of solution issuing from the sprayer.

4. The dishwasher as claimed is claim 1, in which said baffle only partially divides the wash chamber.

5. The dishwasher as claimed in claim 1, in which means are provided downstream of the wash solution feed and circulation pump for adjusting the delivery pressure of the solution.

6. The dishwasher as claimed in claim 5, in which said adjusting means comprise a bypass with its extremities connected respectively to the upstream and downstream sides of said wash solution feed and circulation pump, and a controlled valve for opening and closing communication between the delivery of said pump and the corresponding extremity of said bypass.