Abstract: A compact steaming device, which may be handheld, and method for the generation at one atmosphere and projection of superheated steam over objects and surfaces for the elimination and control of unwanted microorganisms and pests including, but not limited to bedbugs, fleas, ants, lice and mites. A preferred embodiment of such a compact device comprises a vessel, a base, heating coils, a superheated steam generator and an external power supply for the initial boiling of a liquid to vapor and for subsequent heating of the vapor to superheated temperatures. The device and method allow for the generation of steam or gas and subsequent superheating to be accomplished safely at one atmosphere. The preferred embodiment allows for the free flow of the gas through and out of the compact device safely and effectively relieving any resulting pressure. A multi-watt embodiment is also envisioned which may be handheld or stationary.

Abstract: An apparatus and method for the instant generation of superheated steam at normal atmospheric pressure are presented. Such an apparatus includes a water source, a means to convert the water to a mist or atomized droplets and a means to superheat the mist for application onto surfaces and objects. The apparatus and method are based upon the unique properties and behavior of misted water when it comes into contact with a heated surface, such behavior and properties resulting in the efficient and expansive release of energy and superheated steam. Such an apparatus can produce this steam at one atmosphere without the need of a boiler or other required high pressure fixtures or piping.

Abstract: A steam generator system employing a fired burner with a flue gas recirculation system with low NOx emission is disclosed. A method to retrofit fired burners for low NOx emission is also disclosed. In the system, the flue gas recirculation system is configured to include a pre-mixer, and the recirculated flue gas (RFG) is routed to the stage of the pre-mixer for mixing with a portion of the fuel stream, forming a secondary RFG fuel mixture. The secondary RFG fuel mixture is routed to the secondary stage of the burner via a plurality of injector ports. The injection of the second RFG fuel mixture results in a reduction of temperature for the NOx emission to be less than 5 ppm at 3% O2, dry basis.

Abstract: A combustion fluid flow barrier includes an aperture to control combustion fluid flow. The combustion fluid is charged by a charge generator. The combustion fluid flow barrier includes at least one flow control electrode operatively coupled to the aperture and configured to selectively allow, attract, or resist passage of the charged combustion fluid through the aperture, depending on voltage applied to the flow control electrode.

Abstract: A burner and a tile for producing a flame in a furnace. The burner includes a pre-mixer with a venturi that mixes fuel with a first portion of combustion air. The mixture of the fuel and combustion air is passed through the tile. The tile also passes additional portions of combustion air there through. The tile includes flow channels for passing the gases so that it is the tip of the burner. The tile may include a wall to form a staged air tile. Also a process for improving a flame produced by such a burner.

Abstract: A burner and a tile for producing a flame in a furnace. The burner includes a pre-mixer with a venturi that mixes fuel with a first portion of combustion air. The mixture of the fuel and combustion air is passed through the tile. The tile also passes additional portions of combustion air there through. The tile includes flow channels for passing the gases so that it is the tip of the burner. The tile may include a wall to form a staged fuel tile with flow channels splitting the mixture of fuel and combustion air so that some exits the tile inside of the wall, and some exits the tile outside of the wall. The tile may be two pieces. Also a process for improving a flame produced by such a burner and with a tile.

Abstract: A gas device with increased fuel evaporation efficiency includes a fuel reservoir with an outlet and a combustion device connecting to the fuel reservoir with a joint, with the joint engaging with the outlet of the fuel reservoir. The combustion device includes a burner head for fuel combustion disposed apart from the joint, with the burner head disposed at different horizontal positions and different vertical positions, and with the burner head disposed at a height from the fuel reservoir lower than a height of the burner head from the fuel reservoir. The combustion device also includes a communication channel interconnecting the joint and the burner head.

Abstract: A system for generating energy from biomass uses an arc-produced gas, either in the primary burn process to achieve higher burning temperatures, in a secondary after-burn process to reduce pollutants, or in both the primary burn process and after-burn process. The use of arc-produced gas results in increased efficiency, reduced emissions, and additional heat energy. Heat produced is used, for example, to generate electricity. In some embodiments, the arc-produced gas is combined with another fuel such as oil or natural gas for desired burn characteristics and/or for economic reasons.

Abstract: A portable lighter device adaptable to move in a plurality of extended positions, in a plurality of angular positions and in a retracted position. The portable lighter device comprises a shield member having a flame directing nozzle, a housing, a first shield slot, a second shield slot, a left lug and a right lug. A sliding movement of the left lug and the right lug enables the flame directing nozzle to move in the plurality of extended positions and in the retracted position. At least one groove of the shield member comfortably accommodates the flame directing nozzle within the housing while the nozzle is tilted in at least one of the plurality of angular positions according to the user's comfort.

Abstract: A jet burner has a hot-gas side, which faces toward a combustion chamber during operation, and a cold-gas side, which faces away from a combustion chamber, including a base plate on which there are arranged multiple jet nozzles, wherein the base plate has at least one cooling duct, wherein the at least one cooling duct issues into a burner stage which comprises a pilot burner arranged on the base plate.

Abstract: The present invention discloses a novel and improved apparatus and method for reducing the emissions of a gas turbine combustion system. More specifically, a combustion system is provided having a first combustion chamber and a premixer positioned proximate an outlet end of a combustion liner for mixing a second fuel/air mixture with hot combustion gases and burning the subsequent mixture to achieve reduced emissions levels. The premixer is positioned generally about the combustion liner and includes a plurality of channels and fuel injectors for introducing a fuel/air mixture, induced with a swirl, into a second, axially staged combustor.

Abstract: The invention concerns a method of operating a gas turbine with staged and/or sequential combustion. The burners of a second stage or a second combustor are singularly and sequentially switched on during loading and switched off during de-loading. The total fuel mass flow and the compressor inlet guide vanes are adjusted at the same time to allow controlling gas turbine operation temperatures and engine power with respect to the required CO emission target.

Abstract: A power control circuit includes first and second electrical power terminals connected across a source of electrical power. A heating element is connected to the first terminal. A heating element controller is connected in series with the heating element, between the heating element and the second terminal. The controller is configured to control a temperature level of the element, and includes a control input configured to receive a range of temperature settings, and an OFF command for the element. The controller includes an ON/OFF switch to disconnect the element from the second terminal, and a temperature level control switch to intermittently connect/disconnect the element to the second terminal. A jumper wire series-connects the ON/OFF switch to the temperature level control switch. The ON/OFF switch, the jumper wire, the temperature level control switch, and the element are electrically connected in series.

Abstract: A representative mechanical draft system includes an in-line draft inducer that comprises a motor and a backward-inclined impeller. The mechanical draft system also includes an economizer coupled to the in-line draft inducer, where the economizer comprises a housing and a horizontally mounted heat recovery unit.

Abstract: An equipment protector including a tubular body extending from a first end to a second. The tubular body is manufactured from a waterproof, collapsible material and has a first diameter. A buoyancy ring is sealingly connected to the first end of the tubular body and defines a through passage. The buoyancy ring has an outer diameter which is larger than the first diameter such that the buoyancy ring extends radially outwardly from the tubular body and is susceptible to a buoyancy force created at the exterior of the tubular body. A method of protecting equipment is also provided.

Abstract: A refrigerator having its heat exchanger outdoors. In one embodiment, a thermos is attached to the front of a window air conditioner. In another embodiment, the refrigerator has gated conduits to allow cold outdoor air into the refrigerator. The refrigerator has a compressor that circulates refrigerant in an auxiliary evaporator adjacent to the refrigerator compartment to freeze the water in the refrigerator at night and to allow the ice to keep the refrigerator cold. In another embodiment, the refrigerator is combined with a heat pump such that the outdoor heat exchanger of the heat pump and the outdoor heat exchanger of the refrigerator are in close thermal contact. Another embodiment includes a heat pump having a second evaporator near the refrigerator compartment to cool the inside of the refrigerator compartment and heat the home simultaneously by transferring the heat from inside the refrigerator to the indoors.

Abstract: A solid desiccant cooling system comprising a common intake delivering air (19) to a first pathway (21) for air to be conditioned, and a second pathway (31) for regeneration air and structure (24) retaining a mass of solid desiccant for cyclic movement between a first location (24a), in which the solid desiccant lies in the first pathway (21) for dehumidifying the air to be cooled by adsorption of moisture to the desiccant, and a second location (24b) in which the solid desiccant lies in the second pathway (31) for the regeneration air to take up moisture therein as water vapour. The second pathway has an air heater arrangement (35) upstream of the second location (24b) for heating the regeneration air and the first pathway (21) has an air cooler arrangement (25) independent of the air heater arrangement (35) downstream of the first location (24a).

Abstract: A local cleaned air supply device includes: a power supply unit, a control unit, and a freely rotatable cleaned air supply unit. The cleaned air supply unit, which includes a fan driven by driving electric power, and of which a height position, a swing angle in a left-right direction, and a tilting angle can be freely adjusted, is configured so that air drawn therein is cleaned by passing through a pre-filter and a main filter and is then discharged toward a front side thereof from an air discharge opening. The cleaned air supply unit also includes a sighting unit that visualizes a range in which high cleanliness is guaranteed in a space on the front side of the cleaned air supply unit. The sighting unit includes a plurality of laser emitting units that output laser beams, to surround the range, toward a front side of the air discharge opening.

Abstract: A plurality of vents on the dashboard area of the lawnmower direct a cooling mist on the user comprises a mist projector for a riding lawnmower. A water reservoir, contained within the lawnmower, supplies water to the vents via one or more hoses.

Abstract: A system for providing thermal comfort for a person within a space comprising a plurality of interconnected zones, such as a single room in a residence, commercial establishment, or industrial location. At least one fan is positioned in each zone, which may be an overhead fan mounted to a ceiling common to two or more of the zones, and a sensor is provided for sensing a condition in at least one of the zones. A controller is adapted for controlling the fan in the at least one zone independent of another fan based on the sensed condition in the at least one zone including the controlled fan. Related aspects of a thermal comfort control system and methods are also disclosed.

Abstract: A room pressure controlling system includes: a room pressure correction controlling portion that controls a supply air valve or an exhaust valve, whichever is operated as a room pressure controlling valve, so that a between-room differential pressure between an applicable facility and a reference room that is set to a reference room pressure will match a room pressure set point; an offset flow rate set point switching portion that switches an offset flow rate set point when an instruction has been received from an outside to switch the applicable facility between positive and negative pressure; and a room pressure set point switching portion that switches the room pressure set point in coordination with switching of the offset flow rate set point.

Abstract: A flow rate controlling system includes: a flow rate balance determining portion that determines a supply flow rate, regulated by a supply air valve, and a common exhaust flow rate, regulated by a common exhaust air valve, so that a difference between the supply flow rate and an exhaust flow rate, regulated by the common exhaust air valve, matches a set point; a valve monitoring portion that monitors the supply air valve, the common exhaust air valve, and a local exhaust air valve; and a flow rate changing portion that issues a flow rate changing instruction to the flow rate balance determining portion. When there is a fault in the supply air valve and/or the common exhaust air valve, the flow rate balance determining portion, upon receipt of the flow rate changing instruction from the flow rate changing portion, changes neither the supply nor common exhaust flow rate.

Abstract: In some aspects, the subject technology relates to an “Eco-mode” on a thermostat. A button or other user interface element may be configured to activate and/or deactivate) the eco-mode on the thermostat. Upon selection of the eco-mode option, various energy-saving programs can be implemented on the thermostat. The energy-saving programs can be configured to adjust a temperature setting of the thermostat or to provide notifications to a user associated with the thermostat that implement various approaches for reducing energy consumption of a heating, ventilation, and air condition (HVAC) system associated with the thermostat. The eco-mode button can provide users/consumers with a convenient way to save energy, without requiring the user to think of comfort tradeoffs that may need to take place.

Abstract: The instruction device according to the present invention is used in an air conditioning system. In a case where evaluation information concerning comfort of an air environment of an indoor space for person(s) in the indoor space corresponds to discomfort and a difference between first data on the air environment of the indoor space and second data on an air environment of an outdoor space is not less than a prescribed value, the instruction device creates setting information to use only a first air conditioning device for causing movement of air between the indoor and outdoor spaces when determining that the comfort can be improved by the first air conditioning device, and creates setting information to use a second air conditioning device for controlling the air environment of the indoor space by consuming energy resource when determining that the comfort cannot be improved by the first air conditioning device.

Abstract: A heat load predictor predicts a change over time of a heat amount to be processed by air-conditioning equipment, an operation plan creator previously creates an operation plan of the air-conditioning equipment to reduce an evaluation index under a first restrictive condition that a total process heat load be maintained at a same level or within a range of a predetermined amount of difference and a room temperature be maintained within a predetermined comfortable temperature range, and an operation plan corrector corrects the operation plan during controlling the air-conditioning equipment based on the operation plan. If an actually measured temperature differs from a predicted temperature predicted by the operation plan creator at the time of creating the operation plan, the operation plan creator predicts a change over time of the temperature in the room, and corrects the operation plan to minimize the evaluation index under the first restrictive condition.

Abstract: A method of designing an optimized heating and cooling system includes: (1) simulating energy use of a virtual heating and cooling system operating a first potential thermal source or sink under a plurality of conditions; (2) simulating energy use of the virtual heating and cooling system operating a second potential thermal source or sink under a plurality of conditions; (3) optimizing the energy use of the virtual system operating the first potential thermal source or sink or the second potential thermal source or sink using neural network optimization; and (4) designing a heating and cooling system based upon the optimization of the energy use of the virtual system.

Abstract: An electronic controller device for automatic control of a heating, ventilating, air conditioning or refrigeration (HVAC&R) system, which has at least a delayed start controller that is capable of delaying sending of a signal to power on a load unit and achieve a selected conditioned space temperature variation, and a demand regulator controller that is capable of calculating on times and off times to obtain a selected electrical demand. The electronic controller device can include a computer-readable storage medium that comprises programs to implement the delayed start and demand regulator controllers, and optionally other controller modules, can delay OEM ON signals and/or adjust the “on” and “off” states, and/or provide other load unit control, to manage and reduce energy consumption and/or demand.

Abstract: A system including a thermostat user interface for a network-connected thermostat is described. The system includes a thermostat including a frustum-shaped shell body having a circular cross-section and a circular rotatable ring, which is user rotatable for adjusting a setting of the thermostat. The system further includes a client application that is operable on a touch-screen device separate from the thermostat, that displays a graphical representation of a circular dial, that detects a user-input motion proximate the graphical representation, that determines a user-selected setpoint temperature value based on the user-input motion, that displays a numerical representation of the user-selected setpoint temperature value, and that wirelessly transmits to the thermostat data representative of the user-selected setpoint temperature.

Abstract: The present invention relates to an air conditioning unit comprising a conditioned primary air intake pipe (1) connected to the inlet of a first Venturi-type device the aspiration of which communicates with a first secondary air intake pipe (9), the outlet from the first Venturi-type device communicating with the inlet of a second Venturi-type device the aspiration of which is connected to a second secondary air intake pipe (11) comprising a main heat exchanger (8).

Abstract: Provided is a faucet device for an aircraft lavatory unit, wherein a second joint and a third joint are joined by inserting the third joint of a heater module into a second joint of a valve module, and screw members are used to fasten a first case and a second case. As a result, the valve module and the heater module are joined in series via the second joint and the third joint. A first connector of a controller module is joined to a third connector of the valve module and a second connector of the controller module is joined to a fourth connector of the heater module. The first joint of the valve module is joined to a water supply pipe. A fourth joint of the heater module and a faucet main body are joined via a pipe.

Abstract: Known chimneys or chimney furnaces use flue gas flow units for heating buildings, said devices having displaceable or fixed obstacles for deflecting flue gas for generating flue gas turbulence. The invention relates to a device and method for transferring heat through a flue gas discharge pipe in which pivotal guide plates are inserted in the longitudinal direction of the pipe run, at which the flue gas flow is more or less deflected in a sinuous line as function of the pivot angle of the guide plates that can be adjusted during furnace operation. A fan can increase the flue gas flow. An optional furnace heat exchanger generates additional hot water as needed. The controller activates the actuators for the fan, guide plate pivot angle setting, and at least one circulating pump as a function of the prescribed controlled variables such as flue gas temperature, reservoir temperature, heat exchanger performance, or flue gas flow.

Abstract: A portable heating apparatus includes a housing, a heat source, a fan, and a heat shield. The housing includes a fluid inlet and a fluid outlet. The fluid inlet is in fluid communication with the fluid outlet. The heat source is located within the housing. The fan creates a flow of fluid from the inlet to the outlet and is disposed between the heat source and the outlet. The heat shield is disposed between the heat source and the fan and is operable to restrict the flow of fluid between the heat source and the fan.

Abstract: A compact heat exchanger suitable for use in a forced air furnace for a recreational vehicle includes a multi-turn coil having linear segments interposed between bends. The coil is formed from a monolithic tube with portion of the tube being expanded to vary the diameter.

Abstract: A ground source heat exchanger for use with a heat pump. The heat exchanger comprises a foldable, expandable outer pipe with an inner pipe that is placed within a borehole. The outer pipe may be folded and sealed at one end while out of the borehole. The outer pipe is inserted into the borehole then expanded by pressure to minimize the annulus between the outer pipe and the ground. The inner pipe is inserted and the inner and outer pipes are connected to the heat pump for circulation of heat exchange fluid.

Abstract: To provide a Brayton cycle type refrigerating apparatus using multiple stages of compressors and having a good response without reduction in efficiency due to change in heat load of the object to be cooled, the Brayton cycle type refrigerating apparatus (100) according to the present invention comprises, on a refrigerant line (101), multiple stages of compressors (102a, 102b, 102c), a temperature sensor (160) for detecting heat load of an object to be cooled, and a buffer tank (111) provided between a low pressure line (109) and a high pressure line (110), wherein a flow rate of the refrigerant in the refrigerant line is controlled by controlling opening degrees of valves (112, 113) to adjust the cooling capacity.

Abstract: A binary refrigerating apparatus employs a refrigerant composition that has a small global-warming potential (GWP) to be earth friendly, can be used as a refrigerant capable of achieving a low temperature of ?80° C., and is excellent in refrigerating capacity and other performance. A refrigerant composition used as a low-temperature-side refrigerant is a refrigerant mixture including a non-azeotropic mixture in which 20% by mass or less of carbon dioxide (R744) is mixed to difluoroethylene (R1132a). A refrigerant composition used as a high-temperature-side refrigerant is a combination of: a non-azeotropic mixture comprising the refrigerant group of difluoromethane (R32), pentafluoroethane (R125), 1,1,1,2-tetrafluoroethane (R134a) and 1,1,3-trifluoro ethane (R143a); and 1,1,1,2,3-pentafluoropentene (HFO-1234ze), having a global-warming potential (GWP) of 1500 or less.

Abstract: The multiple cylinder rotary compressor includes: a compressor body including a hermetic case, the hermetic case housing inside a rotating shaft, an electric motor section, and a compression mechanism body; the compression mechanism body including: at least three compression mechanism sections arranged so as to stack with each other in an axial direction of the rotating shaft, partition plates each of which disposed between the corresponding adjacent compression mechanism sections, and a primary bearing and a secondary bearing supporting the rotating shaft on both end sides of the compression mechanism body along the axial direction of the rotating shaft; and the compression mechanism sections each of which including: a cylinder forming inside a cylinder chamber, an eccentric section provided to the rotating shaft, disposed in the cylinder chamber, a roller fitted to the eccentric section, rotating eccentrically within the cylinder chamber, and a blade dividing the inside of the cylinder chamber into two.

Abstract: A self-enclosed modular refrigeration unit for refrigeration system comprises compressor adapted to compress a refrigerant. A heat exchanger is connected to a cooling water network to condense the refrigerant with cooling water. A suction line is connected to a suction side of the compressor and adapted to provide a feed of refrigerant to the compressor. A discharge line is connected to a discharge side of the compressor and to the heat exchanger to direct compressed refrigerant to the heat exchanger. A head pressure control valve is in the discharge line downstream of the heat exchanger to control an upstream pressure. A casing encloses the compressor, the heat exchanger, the head pressure control valve. An outlet line has an outlet end downstream of the head pressure control valve adapted to output cooling refrigerant having passed through the head pressure control valve. An inlet end is upstream of the suction line to provide a feed of refrigerant to the compressor.

Abstract: According to some embodiments, a beverage heating and cooling assembly is provided which includes a collar and beverage retainer assembly for connection to retain the assembly below a mounting substrate. The beverage retainer assembly may include a housing with an active heating or cooling system, such as a thermoelectric engine, which is positioned within or adjacent to the housing and beneath the mounting substrate or similar planar structure. The assembly allows for a clean installation of an active thermal system for beverages in order to keep the beverages cold or warm as desired.

Abstract: Embodiments described herein relate to a thermoelectric cooling system comprising a sealed condensing and evaporating system for the purpose of accepting heat into a heat pumping system. In some embodiments, the sealed condensing and evaporating system includes a heat sink and one or more thermosiphons. Each thermosiphon includes a first portion integrated with the heat sink and a second portion configured to thermally couple to a cold side heat exchange element of a heat exchanger.

Abstract: Systems and methods for operating a thermoelectric module to increase efficiency are disclosed. In some embodiments, a method of operating a thermoelectric module includes determining a first amount of power that would maximize a coefficient of performance of the thermoelectric module based on one or more system parameters and providing the first amount of power to the thermoelectric module. The method also includes determining that at least one of the one or more system parameters has changed, determining a second amount of power that would maximize the coefficient of performance of the thermoelectric module based on the one or more system parameters, and providing the second amount of power to the thermoelectric module. In some embodiments, adjusting the amount of power provided based on the one or more system parameters increases the efficiency of the thermoelectric module.

Abstract: Systems and methods for mitigating heat rejection limitations of a thermoelectric module are disclosed. In some embodiments, a method of operating a thermoelectric module includes providing a first amount of power to the thermoelectric module and determining that a temperature of a hot side of the thermoelectric module is above a first threshold. The method also includes, in response to determining that the temperature of the hot side is above the first threshold, providing a second amount of power to the thermoelectric module that is less than the first amount of power. The method also includes determining that the temperature of the hot side of the thermoelectric module is below a second threshold and providing a third amount of power to the thermoelectric module. In some embodiments, this mitigates heat rejection limitations of the thermoelectric module, especially when the hot side of the thermoelectric module is passively cooled.

Abstract: An expansion valve (4) for a vapour compression system (1), and a vapour compression system comprising such an expansion valve (4) are disclosed. The expansion valve (4) comprises a first valve member (7) and a second valve member (8). The first valve member (7) and the second valve member (8) are arranged movably relative to each other, and the relative position of the first valve member (7) and the second valve member (8) determines an opening degree of the expansion valve (4). The first valve member (7) and/or the second valve member (8) is/are automatically movable in response to changes in a differential pressure across the expansion valve (4), the opening degree of the expansion valve (4) thereby being automatically altered in response to changes in the differential pressure across the expansion valve (4). It is ensured that the opening degree of the expansion valve is automatically adjusted to the actual operating conditions, thereby optimising the efficiency of the vapour compression system.

Abstract: A cooling apparatus includes N (N is an integer of 2 or larger) refrigerant storage units arranged in a vertical direction and configured to store refrigerants, a condensation unit disposed above the N refrigerant storage units, a steam pipe for circulating gas phase refrigerants flowing out of the N refrigerant storage units to the condensation unit, a liquid pipe for circulating a liquid phase refrigerant flowing out of the condensation unit to an uppermost refrigerant storage unit, and separation piping for circulating a liquid phase refrigerant flowing out of an upper refrigerant storage unit to a lower refrigerant storage unit. The liquid phase refrigerant flows into each refrigerant storage unit via an inlet, and flows out from the refrigerant storage unit via a first connection port formed below the inlet.

Abstract: Apparatus for use in the treatment of fluid in a fluid circuit of a heating or cooling system. The apparatus (101) comprises a vessel (102) defining an open upper end (104), and defining a circulating fluid inlet port (104) in a side wall (105) thereof and a fluid outlet port (106) in the lower end (107) thereof. The open upper end (103) of the vessel (102) is provided with a removable lid (108) defining a dosing port (109) and an air vent port (110). A permanent magnet collector (112) for collecting magnetic particles on an external collection surface (113) thereof is removably locatable within the vessel (102). A filter (501) and baffle plate (504) are also each removably locatable within the vessel (102). A method of treating fluid in a fluid circuit of a heating or cooling system.

Abstract: Methods and system for managing lubricant within a vapor compression heat pump are presented. In one example, lubricant may be flushed from selected areas of a heat pump to other areas of the heat pump where lubricant is desired. The lubricant may be flushed in full flushing mode or in a partial flushing mode.

Abstract: A refrigerator includes a refrigerating compartment temperature sensor, a cooling apparatus, in a state when driving time points of a refrigerating compartment and a freezing compartment are synchronized, to maintain an inside temperature of the refrigerating compartment by performing a cooling operation of the refrigerating compartment on the basis of a cut-off temperature of the refrigerating compartment that is varied by a difference between a temperature of the refrigerating compartment at a driving time point of the refrigerating compartment that is sensed by the refrigerating compartment temperature sensor and a cut-in temperature of the refrigerating compartment, and a control unit to control the driving of the cooling apparatus by varying the cut-off temperature of the cooling apparatus according to the difference between the temperature of the refrigerating compartment at the driving time point of the refrigerating compartment and the cut-in temperature of the refrigerating compartment.

Abstract: A climate-control system is provided that includes a variable-capacity compressor unit and a control module controlling the compressor unit. The compressor unit is operable in a first capacity mode and in a second capacity mode that is higher than the first capacity mode. The control module may be configured to switch the compressor unit among a shutdown state, the first capacity mode and the second capacity mode based on a demand signal and a number of times that the compressor unit has been switched into the shutdown state within a predetermined time period.

Abstract: A refrigeration apparatus includes a compressor and a controller. The compressor has a casing and a compression element. Compressed refrigerant is sent out of the casing after being discharged into an internal space of the casing. An oil sump formed in the casing collects refrigerator oil. A heater heats the refrigerator oil collected. The controller controls the heater while the refrigeration apparatus is stopped so that a temperature of the refrigerator oil collected in the oil sump reaches a first oil temperature target value. The first oil temperature target value is set in order to keep a refrigerant condensation amount of the refrigerant equal to or less than an allowable condensation amount at which the concentration or viscosity of the refrigerator oil needed to lubricate the compressor can be maintained. The refrigerant condensation amount is caused by in-dome condensation at the start of operation of the refrigeration apparatus.

Abstract: Provided is a refrigerator. The refrigerator includes a cabinet defining a refrigerating compartment and a freezing compartment, a freezing compartment door opening or closing the freezing compartment, and an ice making device disposed on a rear surface of the freezing compartment door. The ice making device includes a case disposed on the freezing compartment door, an ice tray rotatably disposed inside the case, the ice tray making an ice therein, a knob exposed to the outside of the case, the knob being connected to a rotation shaft of the ice tray and rotated by being manipulated from the outside, and an elastic member disposed on the rotation shaft of the ice tray, the elastic member providing an elastic force into the ice tray so that the ice tray is rotated to an original position. Thus, a structure for rotating the ice tray may be simplified.