Batch-type warewasher with energy retaining curtain
First Claim
1. A batch-type warewash machine for washing wares, comprising:
- a housing defining a chamber for receiving wares to be cleaned and having a chamber access opening through which wares are moved into and out of the chamber, the chamber including a lower sump zone and an upper spray zone, wherein the chamber access opening runs vertically along the housing;
a wash spray system including a pump and a wash liquid flow path for moving wash liquid from the sump along the wash liquid flow path to at least one wash spray arm with multiple wash spray nozzles for directing wash liquid sprays onto wares within the upper spray zone;
a rinse spray system including a rinse spray flow path for delivering rinse liquid to at least one rinse arm with multiple rinse spray nozzles for directing rinse liquids sprays onto wares within the upper spray zone;
a door mounted to the housing, the door movable between a closed position covering the chamber access opening and an open position away from the chamber access opening to allow wares to be moved in and out of the chamber, wherein the door is in a vertical orientation when in the closed position; and
a curtain structure mounted on the housing at the chamber access opening, the curtain structure positioned alongside a back side of the door when the door is in the closed position, the curtain structure at least partially covering an upper part of the chamber access opening when the door is in the open position, the curtain structure comprising flexible material that enables wares to be moved in and out of the chamber access opening past the curtain structure;
wherein the chamber lacks any opening, other than the chamber access opening, through which wares can be moved into and out of the chamber;
wherein the chamber lacks any ware conveyance structure that moves wares during cleaning cycles; and
wherein the chamber lacks any spray zone, other than the upper spray zone, and both wash liquid sprays and rinse liquid sprays are directed onto wares that are stationary within the upper spray zone.
1 Assignment
0 Petitions
Accused Products
Abstract
A batch-type warewash machine includes a chamber for receiving wares to be cleaned, the chamber having a chamber access opening and a single spray zone, with at least one spray system for spraying liquid onto wares in the single spray zone. A door is movable between a closed position covering the chamber access opening and an open position away from the chamber access opening to allow wares to be moved in and out of the chamber. A curtain structure is mounted on the machine, the curtain structure located behind the door when the door is in the closed position. The curtain structure remains in position and at least partially covers the chamber access opening when the door is in the open position so as to retain hot moist air within the chamber when the door is moved to the open position upon completion of a ware cleaning cycle.
34 Citations
14 Claims
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1. A batch-type warewash machine for washing wares, comprising:
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a housing defining a chamber for receiving wares to be cleaned and having a chamber access opening through which wares are moved into and out of the chamber, the chamber including a lower sump zone and an upper spray zone, wherein the chamber access opening runs vertically along the housing; a wash spray system including a pump and a wash liquid flow path for moving wash liquid from the sump along the wash liquid flow path to at least one wash spray arm with multiple wash spray nozzles for directing wash liquid sprays onto wares within the upper spray zone; a rinse spray system including a rinse spray flow path for delivering rinse liquid to at least one rinse arm with multiple rinse spray nozzles for directing rinse liquids sprays onto wares within the upper spray zone; a door mounted to the housing, the door movable between a closed position covering the chamber access opening and an open position away from the chamber access opening to allow wares to be moved in and out of the chamber, wherein the door is in a vertical orientation when in the closed position; and a curtain structure mounted on the housing at the chamber access opening, the curtain structure positioned alongside a back side of the door when the door is in the closed position, the curtain structure at least partially covering an upper part of the chamber access opening when the door is in the open position, the curtain structure comprising flexible material that enables wares to be moved in and out of the chamber access opening past the curtain structure; wherein the chamber lacks any opening, other than the chamber access opening, through which wares can be moved into and out of the chamber; wherein the chamber lacks any ware conveyance structure that moves wares during cleaning cycles; and wherein the chamber lacks any spray zone, other than the upper spray zone, and both wash liquid sprays and rinse liquid sprays are directed onto wares that are stationary within the upper spray zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A batch-type warewash machine for washing wares, comprising:
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a chamber for receiving wares to be cleaned, the chamber having a chamber access opening and a single spray zone, with at least one spray system for spraying liquid onto wares in the single spray zone, wherein the chamber access opening runs vertically, wherein the chamber lacks any ware conveyance structure that moves wares during cleaning cycles; a door movable between a closed position covering the chamber access opening and an open position away from the chamber access opening to allow wares to be moved in and out of the chamber, wherein the door is in a vertical orientation when in the closed position; a curtain structure mounted on the machine, the curtain structure located behind and adjacent a back side of the door when the door is in the closed position, the curtain structure remaining in position and at least partially covering the chamber access opening when the door is in the open position so as to retain hot moist air within the chamber when the door is moved to the open position upon completion of a ware cleaning cycle.
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Specification