Abstract: An aircraft cooling system evaporator arrangement has at least two mutually independent coolant circuits, at least two evaporation devices arranged to be hydraulically parallel for enabling an exchange of heat between the coolant and a refrigerant, at least two supply lines for supplying refrigerant to the evaporation devices, and at least two discharge lines for discharging refrigerant from the evaporation devices. A different one of the evaporation devices, a different one of the supply lines and a different one of the discharge lines are assigned to each of the coolant circuits, and the supply lines are hydraulically separate from each other as are the discharge lines. At least one refrigerant sensor monitors a refrigerant state of each of the discharge lines and an expansion valve is driven in accordance with the refrigerant sensors to control streams of refrigerant through the supply lines.

Abstract: An aircraft cooling system evaporator arrangement has an evaporation device including four evaporators that are hydraulically separate from each other with respect to coolant flow. Refrigerant flows from a feed line into first and second evaporators, from the first evaporator into and through a third evaporator, and from the second evaporator into and through a fourth evaporator. The first and third evaporators define a first pair of evaporators arranged parallel to a second pair of evaporators defined by the second and fourth evaporators. First and second coolant supply lines of a first coolant circuit supply coolant to one of the evaporators in each of the first and second pair of evaporators respectively, and first and second coolant supply lines of a second, independent coolant circuit supply coolant to the other of the evaporators in each of the first and second pair of evaporators respectively.

Abstract: A system for controlling a centrifugal gas compressor (108) in an HVAC, refrigeration or liquid chiller system (100) in which flow of gas through the compressor is automatically controlled to maintain desired parameters within predetermined ranges so as to prevent stall and surge conditions within the system. A variable geometry diffuser (119) in the compressor controls the refrigerant gas flow at the discharge of the compressor impeller wheel (201). This arrangement reduces mass flow, decrease/eliminate flow-reducing stall, and increases the operating efficiency of the compressor at partial load conditions. The variable geometry diffuser control in combination with a variable speed drive (VSD) (120) increases the efficiency of the compressor at partial system loads, and eliminates the need for pre-rotation vanes at the inlet of the centrifugal compressor.

Abstract: A generally box shaped portable ice chest for medical supplies and the like includes a plastic housing having a top, bottom, front, back and two sides and an inner compartment within the plastic housing. Between the plastic housing and inner compartment there are three layers of insulation including a Styrofoam polystyrene foam layer, a compressed cork layer and a compressed rubber layer sandwiched between the stainless steel lining and the outer housing. The inner compartment includes three removable vertically stacked drawers and a beverage compartment behind the drawers for receiving a plurality of beverage containers. One of the drawers is adapted to receive dry ice. Each of the drawers includes a plurality of openings. A fan, a solar panel and a rechargeable battery and circuit for charging the battery are disposed in the top of the housing for circulating air through the drawers and beverage container.

Abstract: A vehicle air conditioning system includes a controller that initially controls operation of a compressor to switch between inactive and active states in response to detecting that an operating condition is equal to or surpasses a first operation threshold. The controller determines a first time delay occurring between initiating the switch from one of the inactive and active states to the other of the compressor, and an actual change in the operating condition. The controller subsequently defines a first limit that is offset from the first operation threshold such that the controller controls the operation of the compressor to subsequently switch from the one of inactive and active states to the other in response to detecting that the operating condition is equal to or surpasses the first limit.

Abstract: A tube (20) with outer and inner walls (22, 24) and webbing (26) between them. The inner wall (24) forms a cylindrical inner chamber (28) that slidably receives drink cans (50) end-to-end. Spaces between the inner and outer walls, and between the webbing, form longitudinal thermal chambers (23) surrounding the inner wall for receiving thermal packs (48) along the length of the inner chamber (28). Convection paths (32) between the thermal chambers (23) and the inner chamber (28) provide air circulation for efficient heat transfer. The inner chamber has an access opening (29) at the front end of the tube for receiving and dispensing the drink cans. An elevator (40) in the inner chamber may be provided to move drink cans toward the access opening via cords or rods (44) extending from the front end of the tube that pull the elevator toward the front end of the tube.

Abstract: Disclosed herein is a cooler of table-type, which can be easily kept in custody and reduce power consumption, and which can increase a cooling efficiency and provide a visual satisfaction to a user.

Abstract: A thermostat includes a plurality of HVAC (heating, ventilation, and air conditioning) wire connectors including a connection to at least one call relay wire. The thermostat may also include a powering circuit, including a rechargeable battery, which is configured to provide electrical power to the thermostat by power stealing from a selected call relay wire. The power stealing may include an active power stealing mode, in which power is taken from the same selected call relay wire that is used to call for an HVAC function, and an inactive power stealing mode in which, in which no active call is being made. The powering circuit may be configured to substantially suspend (or at least reduce the level of) power stealing for at least a first time period following each transition of the thermostat from between operating states.

Abstract: A refrigerator is provided. The refrigerator may include first and second refrigerant paths that separately distribute refrigerant, a first cooling chamber connected with a first cold air duct, a second cooling chamber connected with a second cold air duct, and a third cooling chamber connected with a third cold air duct. Cold air generated by a first evaporator is provided to the first cold air duct to cool the first cooling chamber, cold air generated by a second evaporator, which receives refrigerant from the first evaporator, is provided to the second cold air duct to provide concentrated cooling to the second cooling chamber, and cold air generated by a third evaporator is provided to the third cold air duct to cool the third cooling chamber.

Abstract: Frozen aerated products are produced by providing two forming elements, providing at least one open cavity on a surface of each forming element, providing filling means for filling said cavities with a frozen aerated material at a temperature higher than the temperature of the forming elements, filling two cavities, one on each forming element, with a frozen aerated material having an overrun of between 10% and 130%, allowing the frozen aerated material to expand outside its cavity and moving the two cavities opposite one another so that the frozen aerated material in each cavity is pressed against the frozen aerated material in the other cavity. A stick is placed between the two filled cavities before the frozen aerated material in each cavity is pressed against the frozen aerated material in the other cavity.

Abstract: A system for locking control systems of an appliance includes a lock control that is configured to selectively place at least one of the user-controllable systems in a locked condition while allowing another of the user-controlled systems to remain in an unlocked condition. The system generally includes an appliance operation control, at least one interface and the lock control. The appliance operation control is configured to control user-adjustable controllable systems of the appliance in response to input received by the appliance operation control. The at least one interface is on the appliance and is in communication with the appliance operation control. The at least one interface is configured to receive input via the interface to control at least two of the user-controllable systems of the appliance. When a user-controllable system is in the locked condition, the locked control system is inoperative or unable to be adjusted.

Abstract: A refrigerated display case for maintaining food product at a desired temperature includes a product display area adapted to support and to display the food product such that the food product is accessible from the front of the case through an opening. An interior top wall is positioned above the product display area and includes an outlet adjacent the opening. An air passageway internal to the case and in fluid communication with the outlet permits refrigerated air from a refrigeration system to be supplied to the product display area through the outlet. The air discharged from the outlet defines an air curtain adapted to maintain the food product at the desired temperature. A light source is disposed adjacent the interior top wall and inside the air curtain and is adapted to illuminate the food product within the product display area.

Abstract: A method is provided for operating a refrigerant vapor compression system, for example an air-cooled chiller or air-cooled condensing unit, at optimal energy efficiency rating. The method includes the steps of: determining the instantaneous values of a plurality of selected operating parameters of the system's refrigeration unit, calculating a desired control parameter set point indicative of an optimal energy efficiency rating for the refrigeration unit as a function of the selected operating parameters, sensing the instantaneous value of the control parameter, comparing the sensed instantaneous value of the control parameter to the calculated control parameter set point, and adjusting the operating speed of the condenser fans associated with the air-cooled condenser of the refrigeration unit in response to that comparison.

Abstract: The refrigeration system has an energy saving operation mode performing: a first action in which a compressor (11) and an internal fan (16) are driven while the cooling capacity of an evaporator (14) is regulated; a second action in which, when the blow-off-side air temperature in a cold storage is kept at a set value in the first action, the cooling capacity of the evaporator (14) is increased to lower the blow-off-side air temperature to a lower limit temperature of a desired temperature range containing the set value and the compressor (11) and the internal fan (16) are then stopped; and a third action in which, when the blow-off-side air temperature after the second action rises to an upper limit temperature of the desired temperature range, the first action is restarted.

Abstract: There is provided a liquid containing bag capable of supplying mixture directly to a cooling cylinder from the bag without depending on gravity and without moving the mixture into a hopper. A liquid containing bag 5 comprises a bag main body 21 containing a liquid and having flexibility, and an outer layer member 23 disposed outside the bag main body 21, capable of forming a sealed space between the outer layer member and the bag main body 21, and having flexibility. Therefore, for example, when compressed air is sealed between the outer layer member 23 and the bag main body 21, an volume of the sealed space between them is enlarged, and the liquid cooled in the bag main body 21 can be pushed to the outside.

Abstract: A heat exchanger, such as a condenser or gas cooler, having a collecting tube which has a wall and which can be produced by deformation of a single metal strip, which collecting tube has, in its base, at least one row of openings in which heat exchanger tubes, each of which has two narrow and two wide sides, are fastened at their ends. The collecting tube can have at least two chambers, which adjoin one another approximately at a central longitudinal axis, and also a reinforcement, which is formed by the longitudinal edge strips of the metal strip.

Abstract: A cylindrical heat exchanger for use as a gas cooler in a thermal regenerative machine such as a Stirling engine includes an imperforate middle wall of sufficient strength and thickness to withstand the pressure exerted by the working fluid. The heat exchanger includes an inner corrugated wall located within an axial gas flow passage inside the middle wall, and an outer corrugated wall which defines an axial coolant flow passage along the outer surface of the middle wall. The coolant flow passage preferably contains a corrugated intermediate wall.

Abstract: An electronic apparatus includes a housing and an airflow regulating device. The housing defines an accommodating space therein, and an air inlet that places the accommodating space in fluid communication with the external environment. The airflow regulating device includes a cover panel for covering and uncovering the air inlet, and an actuating mechanism coupled to the cover panel and driving movement of the cover panel to adjust the degree of opening of the air inlet in response to a change in temperature in the accommodating space so as to enhance the heat-dissipating efficiency of a cooling fan, minimize crashing and other problems due to poor heat dissipation, avoid the use of a heat-dissipating module that is high in cost and complicated in structure, and reduce manufacturing costs.

Abstract: Disclosed is a refrigerator, in which the structure of an ice supply device is improved. The refrigerator includes a main body, in which at least one storage chamber is formed; a door opening and closing the at least one storage chamber; an ice making unit provided on a rear surface of the door to make ice; an ice storage container provided under the ice making unit to store the ice made by the ice making unit; and at least one receiving rack provided on at least one side of right and left sides of the ice making unit or the ice storage container.

Abstract: Disclosed is the auger in an ice bin mounted in a refrigerator, and the like. The auger in the ice bin is configured to rotate a plurality of augers having spiral-shaped transfer blades and to dispose ice in each space between the transfer blades of the auger for transfer. Accordingly, a certain amount of ice can always be discharged without simultaneously discharging a great amount of ice, and a user may select the number of ice, thus to diversity functions of an ice dispenser. In addition, since the auger is made of a flexible material, the ice can be prevented from being crushed during transfer, thereby enhancing the reliability of the ice dispenser.