Refrigerated merchandiser with door having boundary layer
First Claim
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1. A refrigerated merchandiser comprising:
- a case including a product display area for supporting food product, an opening for providing customer access to the product display area, and an air passageway in fluid communication with the product display area to direct an airflow into the product display area;
a door coupled to the case over the opening and including a charged glass pane connected to a power source which provides a potential on the charged glass pane; and
a charge device in fluid communication with the air passageway to alter the polarity of the airflow to create a charged airflow, wherein the charged glass pane and the charged airflow have the same polarity such that the glass pane is insulated from the charged airflow.
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Abstract
A refrigerated merchandiser including a case that has a product display area for supporting food product, an opening for providing customer access to the product display area, and an air passageway in fluid communication with the product display area to direct an airflow into the product display area. The merchandiser also includes a door coupled to the case over the opening and including a charged glass pane, and a charge device in fluid communication with the air passageway to alter the polarity of the airflow to create a charged airflow. The charged glass pane and the charged airflow have the same polarity such that the glass pane is insulated from the charged airflow.
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Citations
20 Claims
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1. A refrigerated merchandiser comprising:
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a case including a product display area for supporting food product, an opening for providing customer access to the product display area, and an air passageway in fluid communication with the product display area to direct an airflow into the product display area; a door coupled to the case over the opening and including a charged glass pane connected to a power source which provides a potential on the charged glass pane; and a charge device in fluid communication with the air passageway to alter the polarity of the airflow to create a charged airflow, wherein the charged glass pane and the charged airflow have the same polarity such that the glass pane is insulated from the charged airflow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A refrigerated merchandiser comprising:
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a case including a product display area for supporting food product, an opening for providing customer access to the product display area, and an air passageway including an outlet in fluid communication with the product display area to direct an airflow into the product display area, the air passageway further including an inlet to receive air from the product display area; a door coupled to the case over the opening and including a glass pane having a charged conductive layer facing the product display area connected to a power source which provides a potential on the conductive layer; a first charge device in fluid communication with the air passageway to alter the polarity of the airflow to create a charged airflow; and a second charge device in fluid communication with the air passageway to alter the polarity of air entering the air passageway; wherein the charged conductive layer and the charged airflow have the same polarity such that the glass pane is insulated from the charged airflow, and wherein the second charge device has a polarity opposite the polarity of the first charge device to neutralize charged air entering the inlet. - View Dependent Claims (13, 14, 15, 16)
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17. A method of controlling a merchandiser including a case defining a product display area and a door having a glass pane enclosing the product display area, the method comprising:
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charging the glass pane by connecting the glass pane to a power source which provided a potential on the glass pane; charging an airflow to a polarity that is the same as the polarity of the glass pane; directing the charged airflow into the product display area and across the glass pane; and repelling the charged airflow away from the glass pane as the airflow traverses the product display area to insulate the glass pane from the charged airflow. - View Dependent Claims (18, 19, 20)
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Specification