Commercial dishwasher, in particular glass washer
First Claim
Patent Images
1. Commercial dishwasher, in particular glass washer, in the form of a batch dishwasher, comprising a treatment chamber for holding items to be washed;
- nozzles in the treatment chamber for spraying rinsing liquid onto the items to be washed which are in the treatment chamber;
characterized by a hot-wash section which contains a pump for conveying rinsing liquid to the nozzles;
a cold-wash section which contains a pump for conveying rinsing liquid to the nozzles;
valves for supplying rinsing liquid to the nozzles either through the hot-wash section or through the cold-wash section; and
a control device for automatically controlling the valves by at least one programme stored in the control device.
1 Assignment
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Accused Products
Abstract
Commercial dishwasher, in particular for glasses. A hot-wash section and a cold-wash section are provided in order to provide either heated rinsing liquid or unheated rinsing liquid for the rinsing operation.
42 Citations
16 Claims
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1. Commercial dishwasher, in particular glass washer, in the form of a batch dishwasher, comprising a treatment chamber for holding items to be washed;
- nozzles in the treatment chamber for spraying rinsing liquid onto the items to be washed which are in the treatment chamber;
characterized by a hot-wash section which contains a pump for conveying rinsing liquid to the nozzles;
a cold-wash section which contains a pump for conveying rinsing liquid to the nozzles;
valves for supplying rinsing liquid to the nozzles either through the hot-wash section or through the cold-wash section; and
a control device for automatically controlling the valves by at least one programme stored in the control device.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
characterized in that the hot-wash section contains a heater for heating up the rinsing liquid. -
3. Dishwasher according to claim 2,
characterized in that at least one of the hot-wash section and/or the cold-wash section contains a return-prevention arrangement for preventing liquid from flowing back from the dishwasher through one of the two sections in the direction from the downstream end to the upstream end. -
4. Dishwasher according to claim 3,
characterized in that the pump of the relevant section is arranged downstream of the return-prevention arrangement. -
5. Dishwasher according to claim 2,
characterized in that an upstream portion of at least one of the hot-wash section and/or the cold-wash section is formed without pressure upstream of the relevant pump. -
6. Dishwasher according to claim 1,
characterized in that an upstream liquid-inflow distributor is provided, to which upstream starting portions of the hot-wash section and the cold-wash section are or can be connected. -
7. Dishwasher according to claim 6,
characterized in that a downstream liquid distributor is provided, which can be supplied with rinsing liquid either through the hot-wash section or through the cold-wash section, and which is connected to the nozzles by distributor lines. -
8. Dishwasher according to claim 1,
characterized in that the control device automatically controls the valves in such a way that the items to be washed are gradually cooled to a lower temperature by rinsing liquid from the cold-wash section in at least two steps. -
9. Dishwasher according to claim 8,
characterized in that the control device automatically controls the valves in such a way that if the items which have been washed are not immediately removed from the dishwasher after cold rinsing is complete, the cold rinsing operation is repeated each time a predetermined, preferably settable period of time elapses, until the items which have been washed are removed from the dishwasher.
- nozzles in the treatment chamber for spraying rinsing liquid onto the items to be washed which are in the treatment chamber;
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10. Commercial batch-type dishwasher, comprising:
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a treatment chamber for holding items to be washed, nozzles in the treatment chamber for spraying rinsing liquid onto items in the treatment chamber;
a hot-wash section including a first pump for conveying hot rinsing liquid to the nozzles;
a cold-wash section including a second pump for conveying cold rinsing liquid to the nozzles;
at least one valve for controlling delivery of rinsing liquid to the nozzles from either the hot-wash section or the cold-wash section; and
a control device for automatically controlling the first pump, second pump and at least one valve in accordance with a either a first cleaning sequence that has a hot rinsing step during which the first pump is operated to deliver hot rinsing liquid to the nozzles or a second cleaning sequence that has a cold rinsing step during which the second pump is operated to deliver cold rinsing liquid to the nozzles. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification