Abstract: An illumination device (100) includes an illumination unit (1, 2) which illuminates a surface (Ob). The position and the orientation of the illumination unit (1, 2) relative to the surface (Ob) can be changed. A distance sensor (4.1, 8.2) measures an indicator of the current distance between the illumination unit (1, 2) and the surface (Ob). A signal processing control unit (10) is configured to control an output unit (6.1, 6.2) of the illumination unit (1, 2). The controlled output unit (6.1, 6.2) outputs an indication of how much the measured distance deviates from a predetermined reference distance (Ref1, Ref2).

Abstract: A filament lamp includes a plastic housing, a transfer switch, and a laterally rotary structure. The transfer switch is disposed in the plastic housing, an outer wall of the plastic housing is provided with an opening, the laterally rotary structure is rotatably disposed on the outer wall of the plastic housing, an inner side, close to the plastic housing, of the laterally rotary structure extends to form a drive connecting structure, and the drive connecting structure passes through the opening to be connected with the transfer switch in a transmission way. With the design of the laterally rotary structure, when gears are adjusted by a user, the transfer switch is operated by the drive connecting structure only by rotating the laterally rotary structure on the outer wall of the plastic housing, so as to switch the gears.

Abstract: A mounting bracket for flush mounting a lighting device is provided. The mounting bracket comprises: a first planar member and a second planar member, at least one of the first and second planar members having a center, and one or two transverse members disposed at opposite ends of at least one of the first and second planar members, wherein at least one of the first and second planar members includes two adjacent openings and a receiving member offset from the center of the at least one of the first and second planar members, the receiving member being positioned intermediate the two openings.

Abstract: Apparatus and methods for lighting. The apparatus may include a first jewel and a second jewel. The first jewel may support the second jewel by a first link. The first jewel may support the second jewel by a second link. The first link and second links may be configured for transmission of current between the first jewel and the second jewel. The first and second links may be the only attachments of the second jewel to the first jewel. The first jewel may be configured to selectively emit three different colors of light. The second jewel may be configured to selectively emit three different colors of light. The second jewel may be configured to selectively emit the three different colors of the first jewel. The selection may be performed by a user using a switch.

Abstract: A lighting fixture arrangement, an adjustable lighting fixture connector, and a method of installing a lighting fixture arrangement.

Abstract: An infrared lamp tube heat dissipation automatic control system, wherein, according to the temperature of the coolant in lamp tube and the value provided by the flow rate sensor, the controller calculates the optimal flow rate of the coolant in a proportional mode that the higher the temperature, the faster the flow rate, and then control the flow rate by the flow control valve, so as to achieve predetermined coolant temperature and perform contact heat dissipation to the halogen bulb, thus solving the problem of the non-contact heat dissipation of halogen bulb of the prior art that cannot achieve the predetermined heat dissipation effect and resulting in the easy damage of halogen bulb; and further improves the product reliability and the service life. Furthermore, the leakproof structure of the lamp holder achieves a completely leakproof function, thereby enhancing product safety.

Abstract: A leakproof structure of the lamp holder, combined with an installation hole, which can ensure that the coolant in the accommodation space does not leak out; moreover, the lower part of the halogen bulb is covered by the waterproof plug in a tight state, so as to achieve a complete leakproof structure. Therefore, according to the temperature of the coolant, the automatic control system calculate the optimal flow rate of the coolant in a proportional mode that the higher the temperature, the faster the flow rate, so as to achieve the most effective mode of heat dissipation, then perform contact heat dissipation to the halogen bulb to solve the problem of the non-contact heat dissipation of halogen bulb of the prior art that cannot achieve the predetermined heat dissipation effect and resulting in the easy damage of halogen bulb; and further improves the product reliability and the service life.

Abstract: A lamp structure of an umbrella contains a body, an illumination device, and a control pusher. The body includes a shaft, a notch, a runner slidably, and multiple stretchers. The illumination device includes at least one lighting element, a circuit board, and a battery. The circuit board has a control switch, when the runner is moved upward to push the illumination device, the umbrella is opened. The control pusher is connected to the runner and includes a controlling element. The control pusher is slid vertically with respect to the shaft and is switched in three-section positions, such that the control pusher is slid to a first position, a second position, and a third position relative to the shaft to drive the control switch to be conducted or not so that the circuit board controls the at least one lighting element to power on or off.

Abstract: A sheet conveyance apparatus includes an apparatus body including a first guide configured to form a conveyance path along which a sheet to be conveyed is guided, an opening/closing member including a second guide disposed opposite the first guide and configured to form the conveyance path, the opening/closing member being openable and closable with respect to the apparatus body around a rotation axis, a light source configured to emit light, and a reflection unit configured to reflect light from the light source. The light source and the reflection unit are disposed such that, in an open state where the opening/closing member is open to expose the conveyance path, the first guide is irradiated, in a direction from a side farther from the rotation axis to a side closer to the rotation axis, with the light reflected by the reflection unit.

Abstract: A lighting arrangement (100), comprising a first solid state light source (110) arranged to emit visible light, a second solid state light source (130) arranged to emit second light of at least one of violet light and ultraviolet (UV) light, a reflector (140) comprising at least one light-reflecting surface (145), wherein the reflector at least partially encloses the first and second solid state light sources, and wherein at least part of the reflector defines a mixing chamber (150) for mixing the visible light and the second light, a light exit window (160), wherein the visible light and the second light mixed by the mixing chamber are arranged to exit the lighting arrangement through the light exit window, and a third solid state light source (170) arranged to emit UV light, wherein the third solid state light source is arranged outside the mixing chamber.

Abstract: A light source module and an air conditioner including the light source module. The light source module includes: at least one light source emitting sterilizing light in a wavelength band capable of sterilizing pollutants; a substrate on which the light source is mounted, the substrate being electrically connected to the light source; and a light guide guiding a traveling direction of the sterilizing light emitted from the light source. The light guide may guide the sterilizing light such that a beam angle of the light source module becomes narrower than a beam angle of the light source.

Abstract: A burner (10) for heating a furnace (40) includes at least one oxidizing gas supply line (20) for supplying an oxidizing gas into the furnace, the at least one oxidizing gas supply line having a central oxidizing gas supply line (21) for supplying the oxidizing gas together with a first annular supply line (22) surrounding the central oxidizing gas supply line for supplying a first shroud gas flow (25) for the oxidizing gas, at least one fuel supply line (30) for supplying a fuel into the furnace, the at least one fuel supply line including a central fuel supply line (31) for supplying the fuel together with a second annular supply line (32) surrounding the central fuel supply line for supplying a second shroud gas flow (35) for the fuel, wherein the first shroud gas flow is initially sucked into itself and subsequently an atmosphere of the furnace is sucked into itself for a point of recirculation of the atmosphere to be away from a refractory wall of the furnace such that particles are reduced in the atmosp

Abstract: A premixing device includes first and second fuel gas outlets through which fuel gas is capable of flowing out to first and second flow paths partitioned by a partition wall part of a premixing flow path, using a negative pressure generated by an air flow in the first and second flow paths. The premixing device further includes: a first blade part that is provided in the first flow path and includes the first fuel gas outlet provided facing a downstream side in an air flow direction; a flapper that has an opening degree changing according to an air flow rate and opens and closes both the first flow path and the first fuel gas outlet; and a pair of fin parts that protrude at the flapper to sandwich the first fuel gas outlet and the first blade part, and form a gap with respect to the first blade part.

Abstract: A system for providing wind-assisted air supply to coal-fired power plants through the use of a wind funnel communicating with an air handler system of a coal-fired boiler is disclosed. The shape, size and orientation of the wind funnel may be controlled in order to optimize the collection of wind and generation of increased air pressure for delivery to the coal-fired boiler system. Increased operating efficiency of coal-fired power plants may be achieved with the wind funnel system.

Abstract: A water heater appliance for a recreational vehicle includes a tank and a flue disposed within the tank. The flue forms a U-shape that extends to and from an external side of the tank. A gas supply is in fluid communication with the flue. A burner assembly is disposed at an inlet of the flue. A baffle disposed within the flue. The baffle includes a plurality of restrictors configured to the baffle and the flue, and a flue collar mounted to the flue. The flue collar is configured to secure the baffle to the flue.

Abstract: An additively manufactured attritable engine includes a compressor section, a combustion section, a turbine section, and an engine case wall, which surrounds the compressor section, the combustion section, and the turbine section. The engine case wall includes a first cavity embedded in the engine case wall that defines an injector that is in fluid communication with the combustion section. The engine case wall includes at least one second cavity embedded within the engine case wall and defines at least one cooling channel that is in thermal communication through the engine case wall with the injector.

Abstract: The present disclosure relates to a cooking apparatus. The cooking apparatus includes a main body including a cooking chamber, a door mounted on a front of the main body to open and close the cooking chamber, a control panel disposed above the door and on which a knob is mounted, and a heat dissipation guide detachably mounted to a lower portion of the control panel, wherein the heat dissipation guide is provided to protrude from a lower surface of the control panel toward the door to block a heated air discharged through a gap between the control panel and the door from directing to the knob.

Abstract: A cooktop appliance includes a first heating element; a second heating element adjacent to the first heating element; a first supply line in upstream fluid communication with the first heating element to direct fuel thereto; a second supply line in upstream fluid communication with the second heating element to direct fuel thereto, the second supply line being in fluid parallel with the first supply line; a first supply valve provided on the first supply line upstream from the first heating element; a second supply valve provided on the second supply line; a supplemental line providing fluid connection from the first supply valve to each of the first supply line and the second supply line; a supplemental line valve provided on the supplemental line; and a controller operably coupled with the supplemental line valve, the controller being configured to selectively open the supplemental line valve.

Abstract: A heating cooking apparatus includes a heating cooking unit, a lid portion, a detection unit, light source units, and a control unit. The heating cooking unit includes a heating cooking chamber communicated with an opening. The lid portion moves between a closed position at which the lid portion covers the opening and an open position at which the lid portion opens the opening. The detection unit detects whether the lid portion is present at the closed position. The light source units, emit light into the heating cooking chamber. The control unit controls the light source units, when the detection unit detects that either a state of the lid portion being present at the closed position or a state of the lid portion not being present at the closed position is maintained for a predetermined period of time or longer.

Abstract: A handle assembly for a domestic appliance includes a handle bar, the handle bar defining an axial direction, a radial direction, and a circumferential direction; an inner end cap piece attached to the handle bar, the inner end cap piece extending along the radial direction from the handle bar; an outer end cap piece provided around the inner end cap piece, the outer end cap piece being rotatable about the handle bar along the circumferential direction; and a set screw provided through the outer end cap piece and the inner end cap piece and radially spaced apart from the handle bar to adjust an angle of the outer member with respect to the inner member.

Abstract: The present disclosure relates to a cooking apparatus. The cooking apparatus includes a main body, and a control unit provided in front of the main body, wherein the control unit includes a case mounted on a front side of the main body and having an open rear side to communicate with an inside of the main body, a bracket panel accommodated in a rear side of an inside of the case, a protrusion extending from an inner surface of the case toward the bracket panel, and a fixing rib formed on a surface of the bracket panel to allow the protrusion of the case to be inserted and extending inward from an inner surface of the bracket panel to cover a rear side of the protrusion.

Abstract: An oven broiler drawer assembly includes a housing. A drawer assembly sized to be substantially received by an interior region of the housing includes an upper drawer and a lower drawer. The lower drawer is movably mounted to the upper drawer so that the lower drawer may be moved with respect to the upper drawer between a closed position and an opened position. A slide assembly operatively associated with the housing and the upper drawer allows the upper drawer to be moved with respect to the housing between a retracted position and an extended position. A gas manifold assembly is mounted to the housing so that it is located at a position below a grate provided on the upper drawer when the upper drawer is in the retracted position.

Abstract: A heating system includes a water heater configured to heat water, a water recirculation loop configured to receive a first portion of hot water from the water heater and to provide the first portion of hot water back to the water heater, an air handler loop configured to receive a second portion of hot water from the water heater and to provide cooled water back to the water heater, and a controllable valve configured prevent the air handler from receiving the second portion of the hot water.

Abstract: An apparatus for reducing condensation on water lines has a sensor for measuring dew point of ambient air, a first inlet for receiving cold water, a second inlet for receiving hot water, and an outlet. Further, the apparatus has a manifold in fluid communication with the first inlet, the second inlet, and the outlet, a valve for controlling the flow of hot water from the second inlet into the manifold, and an actuator configured to adjust the valve. The apparatus has a controller coupled to the first sensor and the actuator for controlling the actuator to adjust a quantity of hot water that is mixed with cold water at the outlet based on one or more dew point measurements from the sensor.

Abstract: An air conditioner according to an aspect of the present disclosure includes a wall-mounted indoor unit which includes a heat exchanger, a blower, and a housing that accommodates the heat exchanger and the blower therein, and which is fixed to a wall surface, and a discharge unit which is disposed above the indoor unit outside the indoor unit, in which the indoor unit includes a first control unit that controls the indoor unit, the housing includes a suction port that opens upward, the discharge unit includes a discharge device disposed above the suction port, at least a portion of air suctioned into the suction port passes through the discharge device, and the discharge device is driven based on a signal received from the first control unit.

Abstract: An indoor unit includes: a casing that has an air outlet and an air inlet, and inside which an air passage is formed; a cross flow fan disposed in the air passage and configured to blow out, through the air outlet, air sucked in from the air inlet; a stabilizer configured to stabilize vortex of air caused by circulation of air and generated inside the cross flow fan upon rotation thereof; and a guide wall having a surface defining an outlet side air passage being a part of the air passage, the part being in downstream of the cross flow fan, wherein the stabilizer has a first surface that defines a surface opposite to the guide wall in the outlet side air passage, and a part of the outlet side air passage is formed such that a distance in a vertical direction from the first surface to the guide wall gradually decreases toward the downstream.

Abstract: A heat exchanger includes: core fins including a first core fin and a second core fin; and films each of which is attached to a side face of each of the core fins. The core fins and the films are alternately stacked. The first core fin and the second core fin are stacked. An air flow passage, formed by the alternately stacked core fins and films and the stacked first core film and second core film, includes: a first port part serving as a first inlet; and a second port part facing the first port part and serving as a first outlet. An air flow flows from the first inlet to the first outlet in an air flow direction. The first core fin and the second core fin each include a port lateral side part that constitutes one of the first port part and the second port part.

Abstract: The present disclosure relates to an air conditioner pipeline and an air conditioner, thereby alleviating the problem of complicated installation of the air conditioner pipeline. The air conditioner pipeline includes a pipe body. A flow channel for a refrigerant to flow is formed by an inner side of a pipe wall of the pipe body. The pipe wall of the pipe body is provided with at least two conductive parts and insulating parts, where the conductive parts are configured to transmit power to the air conditioner, and the insulating parts are configured to realize insulation between the conductive parts. The air conditioner pipeline provided by the present disclosure can transmit refrigerants and also can transmit power, thereby saving the connection cost of an indoor unit and an outdoor unit of the air conditioner, reducing the installation complexity of the air conditioner, achieving high safety and facilitating implementation.

Abstract: A heat exchanger system including a cabinet, a V-shaped round tube plate fin heat exchanger disposed within the cabinet, and an axial fan housing disposed within the cabinet and located downstream of the V-shaped round tube plate fin heat exchanger. The heat exchanger system also includes a first insulation disposed along a first portion of an inner periphery of the cabinet, a second insulation disposed along a second portion of the inner periphery of the cabinet, and a connecting member disposed along an abutment of the first insulation and the second insulation. The first portion located upstream of the V-shaped round tube plate fin heat exchanger and the second portion located downstream of the V-shaped round tube plate fin heat exchanger. A temperature of the air flowing through the second portion is less than a temperature of the air flowing through the first portion.

Abstract: A dehumidifying air handling unit for a heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a housing, a hollow desiccant drum configured to rotate within the housing, and a heat exchanger disposed within the hollow desiccant drum. The hollow desiccant drum includes channels that extend through a sidewall that surrounds an interior space. A desiccant is provided in the channels. The heat exchanger is configured to cool air flowing through the interior space of the hollow desiccant drum. A method of conditioning air includes rotating a hollow desiccant drum within a housing and directing the air to pass through the hollow desiccant drum.

Abstract: Provided are a filtration device and an air conditioner. The filtration device is applied in the air conditioner, and includes a frame and a filtration structure. The filtration structure is detachably connected to the frame by a first buckle. The frame is configured to be mounted at a housing of the air conditioner. In the filtration device according to the present disclosure, the filtration structure is detachably connected to the frame by the first buckle. After the filtration device is used for a period of time, a user can disassemble the filtration structure for cleaning, maintenance, or replacement.

Abstract: An UV-C based anti-microbial air circulation system for a suspended ceiling. The air circulation system comprises a UV light assembly having an internal chamber containing at least one UVC light. The UV light assembly is bookended by an intake assembly on one side and an exhaust assembly on the opposite side. An internal channel flows from an intake opening into the UV light assembly and out an exhaust opening. Angled fans move the air through the system so that air is exposed to at least one tenth of one second of UV-C light to disinfect it.

Abstract: The invention relates to a method and an assembly having a lamp which radiates UV light, radiating the UV light in a main propagation direction, wherein at least one surface which is permanently illuminated by the UV light of the lamp when the lamp is switched on has a region coated with a material which absorbs UV radiation, the shape and dimensions of the coated region being selected such that all the UV radiation impinging on the illuminated surface with an irradiation intensity above a limit value impinges on the coated region.

Abstract: A humidity control system includes a humidification device configured to modify an indoor air humidity within a building and a humidity control device that is communicably coupled to the humidification device. The humidity control device is configured to receive a construction factor concerning a structure of the building, determine a plurality of indoor air humidity thresholds corresponding to a plurality of outdoor air temperatures based on the construction factor, receive a real-time outdoor air temperature, and control the humidification device to modify the indoor air humidity based on the plurality of indoor air humidity thresholds.

Abstract: An fluid monitoring system can include a filter having an upstream face and a downstream face and defining a form factor, a sensor package arranged within the form factor of the filter to detect at least one quality factor of a surrounding medium, a transmitter electronically coupled to the sensor package and including an antenna for autonomous wireless transmission of the detected fluid quality information, and a power subsystem coupled to the sensor package and the transmitter to provide access to continuous electrical power thereto.

Abstract: An air conditioner including a compressor including a discharge side; an outdoor heat exchanger configured to exchange heat with outdoor air; a base arranged to support the compressor and the outdoor heat exchanger; a four-way valve arranged between the discharge side of the compressor and the outdoor heat exchanger; a defrost pipe arranged at the base and configured to receive refrigerant discharged from the compressor to supply heat of the refrigerant discharged from the compressor to the base; and a defrost valve arranged on the defrost pipe and configured to adjust a flow rate of the refrigerant flowing through the defrost pipe.

Abstract: A communication system for an operation of an HVAC unit for a target space includes a thermostat, a communication hub, and a relay. The communication hub is configured to receive a user desired set point value from a remote control device and transmit the user desired set point value to the thermostat. The user desired set point value is for an operation of the HVAC unit. The relay includes a shielding unit and a transmitter. The shielding unit is configured to block a signal from the remote control device to reach the HVAC unit. The signal blocked by the shielding unit includes the user desired set point value. The thermostat is configured to receive the user desired set point value, adjust the user desired set point value based on measured temperature and/or humidity for the target space, and transmit the adjusted user desired set point value to the communication hub.

Abstract: Control damper including a body, defining a duct with an axis of blowing, and a control device, including a flap for closing the duct, the flap being movable in rotation with respect to the body about a pivot axis orthogonal to the axis of blowing, means for adjusting a nominal position of the flap, and a return device returning the flap to the nominal position when the flap is moved away from the nominal position. For an improved control, the means for adjusting further includes a shaft pivotally mounted with respect to the body about an axis of adjustment, wherein an angular position of the shaft about the axis of adjustment is adjustable, and at least one control cam limiting movements of the flap between the nominal position and an open position, wherein the return device includes a spring that is tensioned when the flap is in the nominal position.

Abstract: A control system for a heating, ventilation, and air conditioning (HVAC) system includes an electrical switch configured to close and enable supply of power to a compressor of the HVAC system based on receipt of an electric current, a first electrical circuit configured to direct the electric current to the electrical switch, and a second electrical circuit configured to direct the electric current to bypass the electrical switch and direct the electric current toward a fan controller of the HVAC system.

Abstract: An indoor unit of an air conditioner includes a covering member that is movable between a covering position where the covering member covers at least a portion of the wire passing portion and an opening position where the wire passing portion is opened, a sliding member that is movable along a sliding direction between a restricting position and a releasing position, and a first support member that has a head that supports the sliding member in the restricting position from a bottom side and a shoulder portion with a diameter that is smaller than the head, wherein the covering member has a first locking portion in which a first insertion hole that passes the shoulder portion through is formed, the first locking portion is positioned in a top side more than the sliding member, and La1>Ta1+Tb1 is satisfied.

Abstract: A portable water heater includes an inner bracket and a thermostatic chamber. A burner and a heat exchanger are arranged in the inner bracket. An upper end of the heat exchanger is provided with a fume collecting hood. The burner includes multiple fire rows arranged side by side, and the fire rows are connected to each other through a gas-distributing rod. The gas-distributing rod is provided with a segmented self-priming valve. A gas-regulating valve is provided on a gas inlet pipe. An inlet end of an internal heat-exchanging pipe of the heat exchanger is communicated with a cold water feeding pipe. The thermostatic chamber has a water inlet connected to a hot water delivering pipe and a water outlet connected to a hot water discharging pipe, and a connecting pipe is provided between the cold water feeding pipe and the hot water delivering pipe.

Abstract: A flame rod of a hot water apparatus is attached to a side wall part of a case that surrounds a combustion region such that an insulator part is positioned on a downstream side of a burner port plate of a burner in a combustion gas flow direction. A core wire part includes an extending part extending from the insulator part toward the burner port plate, and a tip-side part positioned closer to a tip of the core wire part than the extending part. In the combustion gas flow direction, the tip-side part of the core wire part is opposed to at least one of burner ports, and the extending part is not opposed to any of the burner ports.

Abstract: A heat-pump water heater includes a refrigerant circuit, a water circuit, and a controller. The refrigerant circuit includes a main circuit and a bypass circuit. The main circuit includes a compressor, a water heat exchanger, a first pressure-reducing device, an air heat exchanger, and an air-sending device. The bypass circuit includes a second pressure-reducing device. The water circuit includes a hot water tank, a water pump, and the water heater exchanger. In a night-time hot-water supply mode, the controller causes the water pump with a lowest frequency set in advance, causes the compressor with a lowest frequency set in advance, and stops the air-sending device.

Abstract: A refrigeration system having a low stage and a high stage circuit. Each stage having a compressor, an evaporator or a condenser. The low stage includes a low stage refrigerant comprising R744. The high stage includes a high stage refrigerant having a GWP less than 500. The system further includes a heat exchanger configured to transfer heat from the low stage refrigerant to the high stage refrigerant allowing the circuits to provide cooling in two stages.

Abstract: Magnetic cold storage material particles with a low breakage rate in the case of being subjected to long-term vibration caused by operation of a refrigerator under a cryogenic temperature are provided. A cold storage device and a refrigerator, each of which includes the above-described magnetic cold storage material particles and does not degrade refrigeration performance under long-term operation, are provided. Apparatuses provided with this refrigerator, such as a superconducting magnet, are provided. Each magnetic cold storage material particle of the embodiment is composed of an intermetallic compound containing a rare earth element, and an area percentage of voids present in its cross-section is 0.0001% or more and 15% or less. Each of the cold storage device of the embodiment, the refrigerator of the embodiment, and the apparatuses provided with this refrigerator, such as a superconducting magnet, includes the magnetic cold storage material particles of the embodiment.

Abstract: An environmental control system includes an inlet configured to receive a medium and a compressing device fluidly connected to the inlet. The compressing device includes a compressor operably coupled to a turbine. An outlet of the compressor is fluidly connected to an inlet of the turbine such that the medium is provided to the compressor and the turbine in series. At least one air-liquid heat exchanger is arranged in fluid communication with the outlet of the compressor and the inlet of the turbine. The at least one air-liquid heat exchanger is also connected to a liquid loop containing a liquid. At least one air-liquid regeneration heat exchanger is fluidly connected to the liquid loop at a location upstream from the at least one air-liquid heat exchanger.

Abstract: A refrigeration plant (100) for cooling a target fluid to a target temperature between ?80° C. and +30° C. by means of ambient air, having a compressor refrigerant system (105) having a compressor (125) and a target heat exchanger (120) for cooling the target fluid; a natural circulation refrigerant system (140) having an ambient air condenser (145) and a control valve (165), and an intermediate heat exchanger (120) which couples the natural circulation refrigerant system (140) to the compressor refrigerant system (105).

Abstract: A reverse cycle steam compression thermal machine is described, concerning a main circuit (100) connected to an auxiliary circuit (200), comprising an economizer (3), the main circuit (100) comprising a first high pressure exchanger (2) and an evaporator (5), the auxiliary circuit (200) comprising a second high pressure exchanger (7a) and a second expander (8); the economizer (3) includes a first hot branch (1c), a first cold branch (1f), a second hot branch (2c) and a second cold branch (2f).

Abstract: A method of evaluating refrigerant charge within a refrigeration circuit. The method comprises: measuring a quantity of liquid refrigerant within a flash tank of the refrigeration circuit; determining an expected quantity of liquid refrigerant within the flash tank; comparing the expected quantity with the measured quantity of liquid refrigerant within the flash tank; and evaluating the refrigerant charge within the refrigeration circuit based on the comparison. By virtue of this method, the refrigerant charge in the refrigeration circuit can be evaluated quickly and reliably without significant operative intervention.

Abstract: A refrigeration cycle device with a main circuit, a bypass circuit and a supercooling heat exchanger further includes: a controller to control an opening degree of the bypass expansion valve; a first sensor to detect a temperature at the refrigerant inflow side of the evaporator; and a second sensor to detect a pressure of the non-azeotropic mixed refrigerant flowing from the evaporator, wherein the controller controls the opening degree of the bypass expansion valve using temperatures of the evaporator, that is, the temperature at the refrigerant inflow side and a saturated gas temperature of the non-azeotropic mixed refrigerant calculated from the pressure so as to adjust a flow rate of the non-azeotropic mixed refrigerant flowing into the evaporator, to eliminate the temperature difference in the evaporator for suppressing uneven frost formation on the evaporator, and thus to prevent heat exchange performance from degrading.