Abstract: A cooling system includes an ingress port to receive refrigerant in a vapor form from an evaporator, an egress port to return refrigerant in a liquid form back to the evaporator, a condenser coupled to the ingress port and the egress port, and a compressor coupled to the ingress port and the condenser. When the cooling system operates in a first mode, the condenser is configured to receive and condense the refrigerant from the vapor form into the liquid form and to return the refrigerant in the liquid form to the regress port. When the cooling system operates in a second mode, the compressor is configured to compress the refrigerant in the vapor form and to supply the compressed refrigerant to the condenser to be condensed therein.

Abstract: A system for controlling a temperature a within an interior volume of a cargo trailer adapted to transport perishable goods is described herein. The system includes a fluid distribution assembly and a monitoring system. The fluid distribution assembly is configured to selectively channel a flow of cryogenic cooling fluid into the cargo trailer interior volume to facilitate adjusting a temperature within the interior volume. The monitoring system includes at least one sensor for sensing an environmental parameter of the cargo trailer, and a controller coupled to the sensor and to the fluid distribution assembly. The controller is configured to receive a monitoring signal indicative of the sensed environmental parameter, determine an environmental condition of the cargo trailer as a function of the environmental parameter, and provide a notification signal if the determined environmental condition is different than a predefined environmental condition.

Abstract: In an air conditioning system for circulating cooled air to an enclosed space, a controller including a temperature sensor, a humidity sensor and a microcontroller for controlling the indoor fan or blower to prevent operation of same if a fan run-on mode is selected or continuous fan operation is selected and the humidity sensed in the enclosed space is greater than a predetermined amount. Continuous fan operation is allowed unless the humidity exceeds a user defined setpoint during an air cooling operating mode. If the humidity sensed is greater than the predetermined amount, the fan is operated only when the system is providing cooled air, such as when the system compressor is energized.

Abstract: An appliance, such as a refrigerator, includes a drawer mounted within a cabinet for movement between an opened position and a closed position. A driving mechanism, including an electric motor connects to the drawer for driving the drawer between the opened position and the closed position. A control circuit connected to the electric motor and the transmission assembly of the driving mechanism commands the transmission assembly to connect or disconnect the electric motor and the drawer, and further commands the electric motor to drive the drawer to one of the opened position and the closed position when the electric motor is connected to the drawer. The control circuit also senses obstructions and adjusts the movement of the drawer accordingly.

Abstract: A cooling apparatus such as a refrigerator includes a refrigeration cycle including a compressor driven by an electric motor, a condenser, a throttle valve and an evaporator, a first physical amount detector capable of detecting a physical quantity representing a temperature of an object to be cooled by the cooling operation of the evaporator, a temperature control device capable of controlling a rotating speed of the motor based on the physical quantity detected by the first physical quantity detector so that the object is cooled approximately to a target temperature, a second physical quantity detector capable of detecting a physical quantity corresponding to a performance margin of the refrigeration cycle, and a rotating speed limiter capable of limiting the rotating speed of the motor to or below a predetermined speed based on a physical quantity detected by the second physical quantity detector.

Abstract: A freezer includes a refrigeration surface that can be frozen, such as an evaporator surface, a heating device for heating the refrigeration surface, and a control circuit for controlling the operation of the heating device in accordance with a timer. The control circuit is configured to block the operation of the heating device for a time period that is defined by the timer. The timer is used to ensure that the refrigeration surface is only heated to defrost the freezer, if the refrigeration power requirement of the latter is low.

Abstract: An air conditioner for an automobile having a passenger compartment comprising is provided, including an air control system to control a property of air entering the passenger compartment, a manual setting member through which the property of the air is manually controlled, and a control system that automatically controls the property of the air based on a control characteristic. The control system updates the control characteristic based on an input from the manual setting member and based on a variable learning rate. The variable learning rate may be based on a time value measured between a first adjustment of the manual setting member and a second adjustment of the manual setting member and based on a magnitude of the second adjustment of the manual setting member. The property of the air entering the passenger compartment may be volumetric flow rate or temperature.

Abstract: A vehicle air-conditioning apparatus includes a dehumidification means, which has a compressor and dehumidifies inside of the vehicle, a humidity calculation means, which calculates humidity in the vicinity of an inside surface of the windshield, and a determination means, which determines whether the windshield is fogged on the basis of comparison between the humidity and a predetermined value. A defogging operation for heightening dehumidifying performance of the dehumidification means is performed, when the determination means determines that the windshield is fogged in a state where the compressor is turned on. The dehumidifying performance of the dehumidification means is lowered or condition in which the defogging operation is started is made to be difficult in the next defogging operation, when the windshield is determined to be fogged and the defogging operation is not manually performed in a state where the compressor is turned off.

Abstract: A refrigeration system is employed to cool a refrigerated compartment in a kitchen or restaurant. An electronic refrigeration controller controls various aspects of the refrigerated compartment, including temperature. When a push button is pressed, a “sleep-mode” is activated to safely shut the refrigeration system down and turn the evaporator fan off. An employee can then stock or remove inventory from the refrigerated compartment without cool air blowing on the employee. After a predetermined amount of time, the sleep-mode ends and cool air blows into the refrigerated compartment.

Abstract: A chiller includes a chilling compartment for receiving food products to be chilled and a chilling system for delivering chilled air to the chilling compartment during chilling operations. A controller effects operation of the chilling system and includes associated memory storing a plurality of food product data entries. Each food product data entry includes a food product name and at least one associated chilling operation setting for the food product. A user input device is associated with the controller. The controller is operable in conjunction with the user input device to permit a user to select a particular food product data entry such that the controller retrieves at least one chilling operation setting of the particular food product data entry for use in a subsequent chilling operation. The chiller may also include a label printing mechanism for printing chilling operation summary labels which can be applied to food product containers.

Abstract: A multi-chamber refrigeration system is described. The refrigeration system comprises a first refrigeration compartment within a housing, and a second refrigeration compartment within the housing and mechanically coupled to the first refrigeration compartment. A control unit is electrically coupled to the first refrigeration unit and the second refrigeration compartment. A compressor is coupled to the control unit through a first solenoid valve and through a second solenoid valve. The first solenoid valve is operable to alter an operating temperature of the first refrigeration compartment, and the second solenoid valve operable to alter an operating temperature of the second refrigeration compartment.

Abstract: An automatic operation control method automatically controls the temperature setting of a chamber, the defrost cycling and the operation of a compressor and a fan motor according to the door open/close frequency and open time. The defrost cycling is operated during a predetermined time period or an auxiliary time period according to the usage frequency of a refrigerator and the door open time before entering into the defrost cycle while being started after dropping the chamber temperature according to the current state of a temperature adjuster and the average value of the chamber temperature. The operation of a compressor and a fan motor is retarded to prevent the chamber temperature from increasing after the completion of the defrost cycling, thereby minimizing the temperature change of the chamber to protect the stored food.

Abstract: There are described azo compounds of the formula ##STR1## wherein K is an optionally quaternized basic group,X is the radical COOR, in which R is an alkyl group or a substituted or unsubstituted phenyl group, or X is the radical CONHR', in which R' is an alkyl group or a substituted or unsubstituted phenyl group; and wherein the benzene rings B and/or D can be further substituted;and the use thereof as dyes for the dyeing of textile materials, and particularly for the dyeing of paper of all types, especially bleached, lignin-free, unsized paper.

Abstract: A solid-state defrost timer control for a transport refrigeration unit includes an oscillator 68, counter 66, flip-flop 74, and termination timer 88 which are provided with temperature reference signals from comparator U1, sensor failure condition signals from comparators U2 and U3, manual defrost and air switch defrost signals from switches S1 and S2, temperature set point signals from temperature set point device 42 and unit drive signals from line 64. Among the operating features are that the device will accumulate time only when the evaporator coil temperature is less than a pre-established temperature and will retain and hold time when the coil temperature is above the pre-established temperature.

Abstract: A composition useful as a refrigerant comprising a mixture of bromotrifluoromethane (R-13B1) and 1,1-difluoroethane (R-152a).

Abstract: A refrigerated semitrailer truck for both long and local delivery of frozen foods in a hot environment is disclosed which utilizes both a liquid nitrogen unit and a mechanical refrigeration unit with an automatic control system. The system automatically turns the liquid nitrogen off when the temperature is above 30.degree. F., below -10.degree. F., or when an access door to the insulated truck is open. The liquid nitrogen also operates as a standby unit at all temperatures above -10.degree. F. in the event of a malfunction of the mechanical unit.