Abstract:
An ice-making machine includes an ice-forming mold in a food zone of the icemaking machine: a refrigeration system including a compressor, a condenser, an expansion device, and an evaporator in thermal contact with said ice-forming mold, thus producing a combined evaporator and ice-forming mold: and a bulkhead wall separating an equipment compartment from the food zone. A bulkhead space is located between the bulkhead wall and the combined evaporator and ice-forming mold. The bulkhead space is part of the food zone. Air in contact with ice being formed by the ice-making machine can circulate to the bulkhead space. The icemaking machine further includes a source of antimicrobially active gas and an air circulation system that causes the antimicrobially active gas to circulate through the bulkhead space.
Abstract:
The valve element for attachment to a flexible bag may include one or more flexible layers intended to extend over a hole disposed through a sidewall of the bag. In its normal condition, the layer or layers are in adjacent contact to each other or to the bag sidewall and thereby cover and seal the hole. During evacuation, the layer or layers displace to provide a collapsible and expandable channel that allows air to move from the hole to an exit point. To facilitate sealing of the valve element, a tacky surface is included in the valve element. The tacky surface can have a tackiness quality that normally holds the layers and / or sidewall together but that can be overcome during evacuation to expand the channel.
Abstract:
An ice-making machine having an ice-forming surface upon which ice is formed, a refrigeration system including a microchannel evaporator that cools the ice-forming surface, and a water-supply system. The microchannel evaporator includes a microchannel tube that facilitates a distributed cooling effect in a contact area between the microchannel tube and the ice-forming surface. In some embodiments, the microchannel tube includes a series of recessed portions that define insulated regions and divide the tube into non-insulated regions. The insulated and non-insulated regions can be dimensioned to form individual ice cubes on the ice-forming surface. In other embodiments, spaces between microchannel tubes and/or spaces between the ice-forming surface and microchannel tubes can form insulated regions at least partially defining the size and shape of ice produced by the ice-making machine. The ice-forming surface can be attached to the microchannel tubes by adhesive and/or cohesive bonding material (such as glue, epoxy, or other adhesive).
Abstract:
Canard configured hydrofoil sailboards which are normally operated rolled to windward and without yaw and which employ a canard hydrofoil that tracks the water surface are of proven practicality. The present hydrofoil sailboard improves on previous designs by replacing the conventional canard hydrofoil by one of supercavitating type (30), operated in freely ventilating mode. This leads to markedly better surface tracking. This hydrofoil sailboard further improves on previous designs by employing a canard hydrofoil hinged (50, 60) so that it can be rolled to one side or the other and locked into the rolled position. The use of a locked, hinged canard hydrofoil leads to a new hydrodynamic force distribution having significant benefits. Among these are improved sail balance which allows conventional sailboard sail and harness arrangements to be used. Additionally, steering by means of board rolling is much improved. The use of the freely ventilating supercavitating canard hydrofoil makes feasible ramifications of the hydrofoil sailboard in which the hinged canard hydrofoil is replaced by a fixed hydrofoil having one of a number of specific shapes (80 - 82). With appropriate choice of shape, these ramifications maintain, to varying degrees, the benefits of the hydrofoil sailboard with the hinged canard while enjoying greater simplicity of construction and operation.
Abstract:
A micronozzle device can include at least two layers stacked together to form a nozzle array. Each layer can include a plurality of microchannels that have inlet ports and exit ports. The exit ports can be oriented substantially perpendicular, parallel, or in the general direction of a central fluid flow pathway.
Abstract:
The present disclosure concerns embodiments of a microfluidic transfer device. The device mitigates risk of cross contamination between working fluids and is amenable to high-volume, low-cost manufacturing techniques. The device may be configured for mass transfer, heat transfer, or both. For instance, certain disclosed embodiments incorporate semi-permeable membranes to transfer target substances from one fluid to another. Moreover, the device may incorporate both heat and mass transfer components.
Abstract:
Provided is a valve element (120) for venting fluids, such as gas or liquids, entrapped in a packaging enclosure (100). The valve element includes a base element (122) having an aperture (142) disposed through it and a membrane (124) having a protruding raised portion (132). The membrane is attached to and overlays the base element. The raised portion is selectively configurable between a concave position and a convex position by applying an external force against the apex of the raised portion. When configured in the convex position, the raised portion is spaced apart from the aperture allowing fluid communication therethrough. When configured in the concave position, the raised portion obstructs the aperture preventing fluid communication therethrough. To vent air passing through the aperture into the environment, an expandable channel (152) for providing a clearance is provided between the membrane and the base element.
Abstract:
An ice-making machine having an ice-forming surface upon which ice is formed, a refrigeration system including a microchannel evaporator that cools the ice-forming surface, and a water-supply system. The microchannel evaporator includes a microchannel tube that facilitates a distributed cooling effect in a contact area between the microchannel tube and the ice-forming surface. In some embodiments, the microchannel tube includes a series of recessed portions that define insulated regions and divide the tube into non-insulated regions. The insulated and non-insulated regions can be dimensioned to form individual ice cubes on the ice-forming surface. In other embodiments, spaces between microchannel tubes and/or spaces between the ice-forming surface and microchannel tubes can form insulated regions at least partially defining the size and shape of ice produced by the ice-making machine. The ice-forming surface can be attached to the microchannel tubes by adhesive and/or cohesive bonding material (such as glue, epoxy, or other adhesive).
Abstract:
A micronozzle device can include at least two layers stacked together to form a nozzle array. Each layer can include a plurality of microchannels that have inlet ports and exit ports. The exit ports can be oriented substantially perpendicular, parallel, or in the general direction of a central fluid flow pathway.
Abstract:
The valve element for attachment to a flexible bag may include one or more flexible layers intended to extend over a hole disposed through a sidewall of the bag. In its normal condition, the layer or layers are in adjacent contact to each other or to the bag sidewall and thereby cover and seal the hole. During evacuation, the layer or layers displace to provide a collapsible and expandable channel that allows air to move from the hole to an exit point. To facilitate sealing of the valve element, a tacky surface is included in the valve element. The tacky surface can have a tackiness quality that normally holds the layers and / or sidewall together but that can be overcome during evacuation to expand the channel.