Abstract: An HVAC with multiple blowers and a shared motor controller is provided. In one embodiment, an HVAC system includes a first blower installed within a cabinet. The first blower has a motor and a fan connected to be driven by the motor of the first blower. The HVAC system further includes a second blower installed within the cabinet. The second blower also includes a motor and a fan connected to be driven by the motor of the second blower. A motor controller is connected to control operation of both the motor of the first blower and the motor of the second blower. Additional systems, devices, and methods are also disclosed.

Abstract: A heating, ventilation, and air-conditioning (“HVAC”) system. The HVAC system may include a refrigeration circuit and a blower system. The refrigeration circuit may include a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger. The blower system may include a first direct-drive blower and a second direct-drive blower. The first direct-drive blower may flow air over the indoor heat exchanger. The second direct-drive blower may flow air over the indoor heat exchanger and the second direct-drive blower may operable and positionable relative to the indoor heat exchanger independently from the first direct-drive blower.

Abstract: In a refrigerated display case having an interior volume that is accessed through a door panel being opened from a doorframe, a frame cover is included that may reduce condensation or the power required to avoid condensation on a door panel. The frame cover is formed of a non-metallic material that provides a thermal break. The frame cover may also be formed with air pockets to further enhance the thermal break. Moreover, it may be formed to attach with an interference fit and thereby avoid fasteners. Other embodiments and features are presented.

Abstract: In a refrigerated display case having an interior volume that is accessed through a door panel being opened from a doorframe, a frame cover is included that may reduce condensation or the power required to avoid condensation on a door panel. The frame cover is formed of a non-metallic material that provides a thermal break. The frame cover may also be formed with air pockets to further enhance the thermal break. Moreover, it may be formed to attach with an interference fit and thereby avoid fasteners. Other embodiments and features are presented.

Abstract: An ultra low temperature refrigeration system and technique, includes a cabinet with a storage chamber maintained at a certain temperature range, a door providing a seal with the cabinet when engaged with the cabinet, and a dehumidifying unit connected to the cabinet for dehumidifying the storage chamber within the cabinet.

Abstract: A storage cabinet (16) is provided for an ultra-low temperature freezer (10). The cabinet (16) includes a base platform (62a), a plurality of side structural insulated panels (45, 50, 55) each defining a side wall of the storage cabinet (16), and a plurality of generally vertically oriented posts (40) extending from the base platform (62a). Each of the plurality of vertically oriented posts (40) has a slot (40a) for receiving an edge portion (45a, 50a, 55a) of one of the insulated panels (45, 50, 55) therealong. The slot (40a) may have a generally U-shaped profile that surrounds the edge portion (45a, 50a, 55a) of one of the insulated panels (45, 50, 55). At least one of the generally vertically oriented posts (40) has a channel (40c) that extends along a longitudinal dimension thereof, the channel (40c) being configured to receive one of insulation, tubing, or wiring of the freezer therethrough.

Abstract: A storage cabinet (16) is provided for an ultra-low temperature freezer (10). The cabinet (16) includes a base platform (62a), a plurality of side structural insulated panels (45, 50, 55) each defining a side wall of the storage cabinet (16), and a plurality of generally vertically oriented posts (40) extending from the base platform (62a). Each of the plurality of vertically oriented posts (40) has a slot (40a) for receiving an edge portion (45a, 50a, 55a) of one of the insulated panels (45, 50, 55) therealong. The slot (40a) may have a generally U-shaped profile that surrounds the edge portion (45a, 50a, 55a) of one of the insulated panels (45, 50, 55). At least one of the generally vertically oriented posts (40) has a channel (40c) that extends along a longitudinal dimension thereof, the channel (40c) being configured to receive one of insulation, tubing, or wiring of the freezer therethrough.

Abstract: An ultra low temperature refrigeration system and technique, includes a cabinet with a storage chamber maintained at a certain temperature range, a door providing a seal with the cabinet when engaged with the cabinet, and a dehumidifying unit connected to the cabinet for dehumidifying the storage chamber within the cabinet.

Abstract: The present teachings provide control systems and methods for monitoring the performance of an absorption refrigerator. The system includes a temperature sensor that senses the temperature of a generator of a cooling arrangement. The circuit may communicate with the sensor and turn off a heat source of the cooling unit if a sensed temperature condition of the generator exceeds a predetermined temperature condition.