Abstract: A table (1) has a table top (2) containing an opening (3). A heating appliance (10) is in the opening (3) wherein the heating appliance (10) extends at least beneath the table top (2). The table top opening (3) comprises a recess (5) in which the heating appliance (10) is received, and the recess (5) has at least one wall (7) below the table top (2). The heating appliance (10) has a substantially sealed chamber (13) for receiving combustible fuel (47) with which the heating appliance (10) is used, and the chamber (13) has at least one window (35, 45).

Abstract: A cooking device according to the present disclosure comprises: a body in which a cooking chamber including an inlet and an outlet is formed; a heater for heating air; a fan configured to selectively change a discharge direction of the heated air to provide the heated air to the cooking chamber; and a processor configured to control a motor to provide a driving force to the fan such that the fan alternately changes the discharge direction, wherein the processor controls the motor such that a predetermined discharge direction among multiple discharge directions is maintained for a longer time than the other discharge directions.

Abstract: The wireless wall thermostat of the present invention utilizes a push-contact mechanical system that allows a user to raise or lower the temperature within a space by applying a force on the top or bottom center of the front of the thermostat. The perpendicular force applied by the user generates a moment arm around pivot connectors, which rotates the thermostat clockwise or counter-clockwise. When rotated clockwise or counter-clockwise, contact buttons attached to the back of the thermostat come into contact with the trigger tabs of a stationary trigger plate mounted to a wall through use of an electromagnetic attraction between a steel disc and a magnet. When the trigger tabs press the contact buttons, the contact buttons send a signal to the central processing unit of the thermostat's internal circuit board to modulate the temperature setting. In addition, the wireless wall thermostat can be detachable by utilizing a magnetic release smart mount.

Abstract: An air-conditioning unit is provided, comprising: an input vent for receiving return air; an intermediate vent; an output vent; a blower fan proximate to the input vent for moving the return air from the input vent to the intermediate vent; and an air-conditioner coil between the intermediate vent and the output vent including an active portion including one or more operational air-conditioning coils that receive a first portion of the return air from the intermediate vent, for circulating a coolant, condition the first portion of the return air by heat exchange with the coolant to create conditioned air, and pass the conditioned air to the output vent, and an inactive portion that does not circulate coolant and passes a second portion of the return air as unconditioned air to the output vent, wherein the conditioned air and the unconditioned air pass through the output vent as supply air.

Abstract: A rear panel assembly includes a rear panel body provided with a vent and a motor bracket arranged at a side of the rear panel body and connected to the rear panel body. The motor bracket is at least partially opposite to the vent, and the motor bracket is provided with an air hole to allow air to flow into the vent through the air hole.

Abstract: A gas conditioner 60 comprises: a case 62 that forms a gas flowpath 61 through which gas flows; and resin members 80 that are provided to the gas flowpath 61 and that are water permeable. The resin members 80 are formed of sealed hollow bodies that are filled with water.

Abstract: An air treatment apparatus includes: a total heat exchanger; a heat supply device having a heater and a cooler; an upper damper; and a complex dehumidification device having a first stationary desiccant and a second stationary desiccant. The upper damper allows return air (RA) to flow into one of the first stationary desiccant and the second stationary desiccant, and allows outdoor air (OA) to flow into the other one of the first stationary desiccant and the second stationary desiccant. The upper damper switches between a return air path and an outdoor air path so that the return air (RA) and the outdoor air (OA) pass through different ones of the first stationary desiccant and the second stationary desiccant.

Abstract: There is provided an air treatment apparatus comprising an air flow generator that is arranged to generate an airflow, a moisture source that is arranged to introduce water vapour into the air flow, a body that in use surrounds both the air flow generator and the moisture source, a water supply system that is arranged to provide water to the moisture source, the water supply system comprising a water tank assembly that is separable from the body, an interface sealing element that is arranged to form a seal between the water tank assembly and the body that prevents leakage of air into the body, an air supply feed that is arranged to convey air from within the body of the air treatment apparatus into the water tank assembly, and one or more air filter assemblies that are located upstream of both the moisture source and the air supply feed.

Abstract: Provided is an air-conditioning system that air-conditions a house having an upper floor and a lower floor positioned at a lower position than the upper floor. The air-conditioning system includes an air-conditioning apparatus that conditions air in an air-conditioning room provided at the upper floor or at a higher position than the upper floor, a plurality of conveyance fans that conveys the air in the air-conditioning room to a plurality of upper rooms positioned at the higher floor independent of the air condition room, and is provided to correspond to the plurality of upper rooms, coupling fans that couple the upper rooms and lower rooms positioned at lower positions of the upper rooms to blow air from the upper rooms to the lower rooms, and a system controller that controls the air-conditioning apparatus, the conveyance fans, and the coupling fans.

Abstract: A building management system (BMS) for filtering a fluid within a building is shown. The system includes one or more sensors configured to measure one or more characteristics of a first fluid within an air duct of the BMS and measure one or more characteristics of a second fluid after the second fluid has been filtered. The system further includes a pollutant management system configured to receive data from the one or more sensors and control a filtration process. The filtration process selects a filter of a plurality of filters based on at least one of a level of the one or more characteristics of the first fluid or the one or more characteristics of the second fluid.

Abstract: A controller of an HVAC system monitors a suction-side property and a liquid-side property over a period of time. The controller determines whether the suction-side property has an increasing or decreasing trend over the period of time. The controller determines whether the liquid-side property has an increasing or decreasing trend. In response to determining that both the suction-side property and the liquid-side property have an increasing trend over the period of time, a fan fault is detected. In response to determining that the suction-side property has a decreasing trend and the liquid-side property has an increasing trend over the period of time, a blockage of a refrigerant conduit subsystem is detected. In response to determining that both the suction-side property and the liquid-side property have a decreasing trend over the period of time, a blower fault is detected.

Abstract: A thermostat of an HVAC system receives active event parameters from a utility provider. The active event parameters include a start time, a stop time, and a predefined temperature setpoint for the active event, which is associated with a requirement to decrease energy consumption between the start time and the stop time. Following the start time, the thermostat adjusts a setpoint temperature of the HVAC system to the predefined setpoint temperature.

Abstract: An air conditioning system includes an air conditioner and an adapter that connects the air conditioner and an external server device. The adapter includes a first updating unit and a second updating unit. The first updating unit updates, when a new learning model that provides a recommended operation to a control unit included in the air conditioner is received from the external server device, the learning model by using a first update method. The second updating unit updates, when an update purpose control program that updates a control program for the air conditioner is received from the external server device, the update purpose control program by using a second update method that is different from the first update method. It is possible to reduce an adapter load by updating the learning model and the control program by using different methods.

Abstract: Systems and methods related to autonomous control of supervisory setpoints using artificial intelligence are described. In one example, a method including using a measurable attribute associated with a system, segmenting operational data associated with the system into at least a first bin and a second bin, is provided. The method further includes training a first brain based on a first data model associated with the first bin and training a second brain based on a second data model associated with the second bin. The method further includes using the first brain and the second brain, implemented by at least one processor, automatically generating predicted supervisory control suggestions for a plurality of supervisory setpoints associated with the system.

Abstract: A building system of a building includes an in-zone plume control system located within a zone of the building, the in-zone plume control system including one or more return air inlets comprising openings to receive one or more air plumes generated by one or more users. The in-zone plume control system includes one or more exhaust outlets configured to exhaust the one or more air plumes, a filter, and a fan configured to draw the one or more air plumes in through the one or more return air inlets, through the filter, and out through the one or more exhaust outlets back into the zone, wherein the filter is configured to filter the one or more air plumes to remove particles from the one or more air plumes before returning the one or more air plumes to the zone.

Abstract: The present application discloses an air conditioner control method. The method includes obtaining a position of a user; detecting that the position of the user meets a preset condition, and obtaining a target operating parameter of an air conditioner, the preset condition being determined according to a preset running time span, and the preset running time span being determined according to a current environmental parameter and a target environmental parameter, and the current environmental parameter comprising at least one of a current indoor temperature, a current indoor humidity, a current air cleanliness and a current air freshness; and controlling the air conditioner at a target position to operate with the target operating parameter. The present application also discloses an air conditioner, a server and a computer readable storage medium.

Abstract: A system including a plurality of air vents, wherein the plurality of air vents are installed at a section of a room; a plurality of air ducts, in which at least one of the plurality of air ducts is configured to pump air into the room in conjunction with an HVAC system; a plurality of suction pumps, wherein the plurality of suction pumps are configured to suck air; a plurality of exhaust pipes connected to the plurality of suction pumps; a master suction pump, wherein the master suction pump is configured to receive the air sucked in by the plurality of suction pumps; an air filter device, wherein the air filter device is configured to disinfect the air received by the plurality of suction pumps.

Abstract: A control device causes an air conditioning apparatus to execute a temperature adjustment operation of causing a first temperature to approach a first target temperature at a target time point and causing a second temperature to approach a second target temperature at the target time point. The first temperature is a surface temperature of a partition portion including at least one of a floor, a wall, and a ceiling facing a target space. The second temperature is an indoor temperature of the target space.

Abstract: A network of wireless remote climate sensors in a heating, ventilation, and air conditioning (HVAC) system permits the creation of personalized microclimates within an enclosed space. In addition to collecting temperature and humidity data, the wireless remote climate sensors can detect whether the enclosed space is occupied by a human. Human detection is made possible by optional cameras, microphones, and gas sensors on the wireless remote climate sensors. As the human moves throughout the enclosed space, the HVAC system is able to track the human's movement using the wireless remote climate sensors. The HVAC system may adjust airflow to different portions of the enclosed space based on the human's location. The result is an efficient use of system resources to keep users at their ideal temperature.

Abstract: A network of wireless remote climate sensors in a heating, ventilation, and air conditioning (HVAC) system permits the creation of personalized microclimates within an enclosed space. In addition to collecting temperature and humidity data, the wireless remote climate sensors can detect whether the enclosed space is occupied by a human. Human detection is made possible by optional cameras, microphones, and gas sensors on the wireless remote climate sensors. As the human moves throughout the enclosed space, the HVAC system is able to track the human's movement using the wireless remote climate sensors. The HVAC system may adjust airflow to different portions of the enclosed space based on the human's location. The result is an efficient use of system resources to keep users at their ideal temperature.

Abstract: A network of wireless remote climate sensors in a heating, ventilation, and air conditioning (HVAC) system permits the creation of personalized microclimates within an enclosed space. In addition to collecting temperature and humidity data, the wireless remote climate sensors can detect whether the enclosed space is occupied by a human. Human detection is made possible by optional cameras, microphones, and gas sensors on the wireless remote climate sensors. As the human moves throughout the enclosed space, the HVAC system is able to track the human's movement using the wireless remote climate sensors. The HVAC system may adjust airflow to different portions of the enclosed space based on the human's location. The result is an efficient use of system resources to keep users at their ideal temperature.

Abstract: A network of wireless remote climate sensors in a heating, ventilation, and air conditioning (HVAC) system permits the creation of personalized microclimates within an enclosed space. In addition to collecting temperature and humidity data, the wireless remote climate sensors can detect whether the enclosed space is occupied by a human. Human detection is made possible by optional cameras, microphones, and gas sensors on the wireless remote climate sensors. As the human moves throughout the enclosed space, the HVAC system is able to track the human's movement using the wireless remote climate sensors. The HVAC system may adjust airflow to different portions of the enclosed space based on the human's location. The result is an efficient use of system resources to keep users at their ideal temperature.

Abstract: An air conditioner is connected to an AC power source. The air conditioner includes an adjustment unit and a control unit. The adjustment unit adjusts apparent power at a power source input terminal of the air conditioner. The control unit controls the adjustment unit, based on information according to a target value of apparent power to be supplied to the AC power source from the air conditioner.

Abstract: Disclosed is a ceiling type air conditioner that can implement a horizontal air flow to provide an indirect wind to a user with a simple structure.

Abstract: One illustrative energy recovery system disclosed herein includes a facility and a closed chilled water loop including a chilled water stream delivered to the facility and a returning water stream that is received from the facility. In this example, the system also includes a primary heat exchanger having a first fluid side and a second fluid side, the first fluid side is adapted to receive supply water and the second fluid side is adapted to receive at least a portion of the returning return water stream. The primary heat exchanger is adapted to effectuate heat transfer between the supply water flowing in the first fluid side and the returning water stream flowing in the second fluid side.

Abstract: An energy cutoff apparatus for a water heating system includes a safety cutoff circuit and a presence detection circuit. The safety cutoff circuit receives a temperature signal from a temperature sensor. The temperature signal is indicative of whether a temperature of water in the water heating system within a permissible temperature range. The safety cutoff circuit disables a safe operation current branch when the temperature signal indicates the water temperature is outside the permissible water temperature range. The presence detection circuit detects a presence of the temperature sensor and disables a presence detection current branch if the temperature sensor is absent. Switches can power heating elements of the water heating system responsive to the safe operation current branch being enabled and the temperature sensor being present and can disable the heat elements responsive to the safe operation current branch being disabled or the temperature sensor being absent.

Abstract: A multifunctional handle-type electrical blow dryer includes a temperature measuring device installed on a housing of the electrical blow dryer for measuring a temperature at the housing of the electrical blow dryer to obtain and output a corresponding on-site measured temperature; an on-site alarm device for performing a corresponding voice alarm operation when the on-site measured temperature is over-limit; a data testing mechanism includes an ultrasonic transmitting device, an ultrasonic receiving device and an air-temperature testing device. The ultrasonic transmitting device is installed on the high definition camera for transmitting an ultrasonic signal towards the ground and recording the time of transmitting the ultrasonic signal. The ultrasonic receiving device is installed on the high definition camera, near the ultrasonic transmitting device, for receiving the ultrasonic signal transmitting from the ultrasonic transmitting device to the ground and reflected from the ground.

Abstract: A variable geometry ejector (300) for cooling applications is disclosed comprising a primary fluid chamber (302); a suction chamber (320) downstream the primary fluid chamber (302); a primary nozzle (310) arranged so as to stream a working fluid from the primary fluid chamber (302) to the suction chamber (320); and a tail member (325) arranged downstream the primary nozzle (310), wherein any of the primary nozzle (310) and the tail member (325) is movable in relation to the other. The invention further discloses a system comprising the variable geometry ejector (300). The invention applies to cooling apparatus and systems industry.

Abstract: A refrigeration apparatus is of a two-stage compression type for compressing a refrigerant to a supercritical region. The refrigeration apparatus includes a lower stage-side compression unit, a higher stage-side compression unit, an intermediate cooler, a heat source-side heat exchanger, a utilization-side heat exchanger, an economizer circuit, and a control unit. During a first operation in which the heat source-side heat exchanger functions as a radiator and the utilization-side heat exchanger functions as an evaporator, in a case where a discharge temperature which is a temperature of the refrigerant discharged from the higher stage-side compression unit is more than a first temperature, the control unit increases a cooling capacity of the intermediate cooler without increasing a refrigerant flow rate of the economizer circuit on condition that the intermediate cooler does not reach a maximum cooling capacity.

Abstract: A system has a first compressor and a second compressor. A heat rejection heat exchanger is coupled to the first and second compressors to receive refrigerant compressed by the compressors. The system includes an economizer for receiving refrigerant from the heat rejection heat exchanger and reducing an enthalpy of a first portion of the received refrigerant while increasing an enthalpy of a second portion. The second portion is returned to the compressor. The ejector has a primary inlet coupled to the means to receive a first flow of the reduced enthalpy refrigerant. The ejector has a secondary inlet and an outlet. The outlet is coupled to the first compressor to return refrigerant to the first compressor. A first heat absorption heat exchanger is coupled to the economizer to receive a second flow of the reduced enthalpy refrigerant and is upstream of the secondary inlet of the ejector. A second heat absorption heat exchanger is between the outlet of the ejector and the first compressor.

Abstract: An apparatus and method for generating electricity wherein the apparatus comprises a burner operably connected to a fuel source, an energy receiving housing radially surrounding the burner having an energy receiving surface inwardly oriented towards the radian burner, at least one thermoelectric generator applied to an outer surface of the energy receiving housing and a cooler in contact with the at least one thermoelectric generator so as to position the thermoelectric generator between the cooler and the energy receiving housing. The method comprises combusting a fuel with a burner, capturing the heat from the burner with the energy receiving housing and generating electricity with a thermoelectric generator applied to the outer surface of the housing between the housing and a cooler.

Abstract: A refrigeration unit includes: a refrigeration circuit including a compressor, a condenser, a thermal expansion valve, and an evaporator connected into a circuit; and a heat recovery system including a thermoelectric module, a control module and a battery; the thermoelectric module includes a first side and a second side, the first side being configured to establish a thermal connection with a first heat source and the second side being configured to establish a thermal connection with a second heat source, the first heat source and the second heat source having different temperatures, the thermoelectric module being configured to generate power by the temperature difference between the first heat source and the second heat source; and the control module is configured to store the power generated by the thermoelectric module to the battery, the battery being configured to drive the refrigeration circuit.

Abstract: Systems and methods for modular power and access control for actively cooled containers are provided. In some embodiments, a mobile and/or stationary, modular, power system/dock for perishable storage/transport containers with active cooling functionality is provided to maintain a controlled internal temperature for extended periods. In some embodiments, this active cooling can include: thermoelectric (TEC), Stirling-cooler; and/or vapor compression. This can be in support of refrigerated or frozen cargos in (but not limited to) Cold chain, grocery (food), Pharma, Medical applications, or specialized customer requirements. The power system is useable with either mains, locally generated, and/or battery power. In some embodiments, the system includes a proximity sensor and/or switching system to control timing of power application and power removal to the food storage cooler to eliminate risk of arcing or shock.

Abstract: A heat exchanger includes a distributor, and a first heat transfer tube and a second heat transfer tube connected in parallel with each other with respect to the distributor. The first heat transfer tube is disposed above the second heat transfer tube. The first heat transfer tube has a first inner circumferential surface, and at least one first groove recessed relative to the first inner circumferential surface and arranged side by side in a circumferential direction of the heat transfer tube. The second heat transfer tube has a second inner circumferential surface, and at least one second groove recessed relative to the second inner circumferential surface and arranged side by side in a circumferential direction. An internal pressure loss of the first heat transfer tube is smaller than an internal pressure loss of the second heat transfer tube.

Abstract: A refrigeration evaporator for use in refrigeration systems, the evaporator comprising: a plurality of fluidly connected liquid chambers disposed between first and second layers of material, an inlet for receiving and introducing liquid refrigerant into at least one of said plurality of liquid chambers; and wherein each of the liquid chambers are interconnected by respective overflow inlets and outlets to allow flow of liquid refrigerant between the plurality of fluidly connected liquid chambers under gravity such during influent flow of the refrigerant liquid through the inlet, the liquid chambers accumulate the refrigerant liquid sequentially to impede the flow of the refrigerant liquid; and a vapour circuit comprising respective draw off vapour channels being provided to receive flow of refrigerant vapour from corresponding liquid chambers, the draw off vapour channels being in fluid communication with peripheral vapour channels disposed along peripheral regions of the evaporator for reducing or preventing

Abstract: An apparatus for staged startup of air-cooled low charged packaged ammonia refrigeration system includes motorized valves on condenser coil inlets, a main compressor discharge motorized valve, a bypass pressure regulator valve in the main compressor piping, and check valves on the condenser outlets. The condenser inlet motorized valves provide precise control of gas feed to the condensers, so pressure can build without collapsing oil pressure. The condenser outlet contains check valves to prevent liquid backflow during coil isolation. The compressor discharge line contains a motorized valve for regulating discharge pressure at start-up. The motorized valve in the compressor discharge piping includes a bypass with a pressure regulator for precise regulation at minimum discharge pressure. Once discharge pressure rises above the setpoint, the condenser inlet solenoid coils open one at a time.

Abstract: A refrigerant circuit includes a compressor, a high-pressure side heat exchanger, a decompressor, and a low-pressure side heat exchanger, which are annularly connected by a refrigerant pipe, and is configured to circulate refrigerant. The refrigerant circuit is configured to perform an oil recovery operation based on an operation history of the compressor during a normal operation of the refrigerant circuit and a property of the refrigerant circuit. The property of the refrigerant circuit includes at least one selected from the group of a length of the refrigerant pipe, a height difference of the refrigerant pipe, and an outside air temperature.

Abstract: A refrigeration system includes a compressor, a condenser, a heat transfer component, and a refrigerant loop arranged to allow a flow of a refrigerant fluid. The compressor, the condenser, and the heat transfer component are connected in the refrigerant loop. The system further includes a bypass path extending between an output side of the compressor in the refrigerant loop and an input side of the heat transfer component in the refrigerant loop. A bypass valve is connected in the bypass path. A control circuit is in communication with the bypass valve. The control circuit is configured to open the bypass valve to allow the refrigerant fluid to pass to the heat transfer component thereby increasing the refrigerant fluid provided to the heat transfer component and artificially increasing a load on the refrigeration system. Other examples refrigeration system and examples methods are also disclosed.

Abstract: The disclosure pertains generally to shave ice confection machines and processes, and more particularly to a block ice shaving apparatus, system and method whereby an improved blade and blade assembly produce more consistent output with increase machine life.

Abstract: An ice dispensing motor assembly includes a motor in operative communication with an auger of an ice maker. The motor is enclosed within a first housing. The motor assembly also includes a driver circuit in electrical communication with the motor. The driver circuit is enclosed within a second housing.

Abstract: An insulated food container and platter are provided, The device includes a base having a perimeter wail extending upwardly therefrom and an open upper end defining an interior volume for storing food. The perimeter wail includes an interior layer and an exterior layer defining an interior channel. The perimeter wall further includes an aperture with a removable plug, such that the interior channel can be filled with a freezable gel material. The perimeter wall extends upwardly and inwardly to form an upper region that receives air bubbles that escape the freezable gel. in use, the device can be stored in the freezer and then used to keep food at a lower temperature.

Abstract: A controller within a refrigeration application controls temperature and humidity within a compartment of the refrigeration application. The controller may begin cooling the compartment based on a measured temperature value for the compartment. The controller may delay a starting time of an evaporator fan within the compartment based at least in part on a measured humidity value for the compartment. The controller may also adjust an operating time of a condenser fan based at least in part on the measured humidity value.

Abstract: The present disclosure relates to a refrigerator and a control method thereof in one embodiment. The refrigerator in one embodiment may include a storage part including a compressor and an evaporator and configured to store a food item at a low temperature using air cooled by the evaporator, an ice making compartment configured to make or store ice using air cooled by the evaporator, and a fan for making ice allowing air cooled by the evaporator to flow to the ice making compartment, wherein a rotation speed of the fan for making ice changes while the fan for making ice continues to operate during operation of the compressor.

Abstract: Provided is a refrigerator. The refrigerator is characterized by enabling at least a part of a refrigerator door to be selectively transparent by a user's operation, such that the user sees through an inside of the refrigerator while the refrigerator door is closed.

Abstract: Embodiments provide a door body for opening and closing a front part of an article body, whereby the door body includes a front panel constituting a front of the door body, a frame supporting at least a part of an outside edge of the front panel, and a back panel constituting a back of the door body. According to at least one embodiment, the frame includes a support plate extending to an inside of the article body in a substantially vertical direction, the front panel is bonded to the support plate with a double-sided pressure-sensitive adhesive film, the double-sided pressure-sensitive adhesive film extends from a leading edge of the support plate to an inside of the door body, and a radius of curvature of a front side corner of the leading edge of the support plate is 0.1 to 10 mm.

Abstract: A vacuum adiabatic body according to the present invention includes at least one reinforcing frame which is installed along a corner of at least one of a first plate member and a second plate member constituting an inner wall and an outer wall of the vacuum adiabatic body and is provided as one body for reinforcing the strength, thereby being capable of reinforcing the strength of the vacuum adiabatic body which is applied to the three-dimensional structure.

Abstract: A refrigerator including an insulating wall. The insulating wall includes an inner surface member, an outer surface member, a vacuum insulation material, an insulating member, and a foam insulation material. The inner surface member forms at least a portion of the inner surface of the refrigerator. The outer surface member forms at least a portion of the outer surface of the refrigerator. The vacuum insulation material is disposed between the inner surface member and the outer surface member. The insulating member is disposed between the vacuum insulation material and the inner surface member or between the vacuum insulation material and the outer surface member, and includes an aerogel, axerogel, or a cryogel. At least a portion of the foam insulation material is used to fill the space between the vacuum insulation material and the insulating member.

Abstract: A basket for lining an ice chest includes four flexible walls configured to roll up, a bottom, and at least two handles. At least one wall includes perforations configured to allow water or ice to pass through the perforations. The four flexible walls are made of silicone, rubber, elastic, or any combination thereof.

Abstract: A refrigerating and freezing device (1) includes a cabinet, wherein at least one storage compartment (11) is defined therein, and a heating cavity is defined in one of the storage compartments (11); and an electromagnetic heating device, configured to supply electromagnetic waves into the heating cavity so as to heat a to-be-processed object in the heating cavity, wherein the electromagnetic heating device is provided with an electromagnetic generation module (21) configured to produce an electromagnetic wave signal. A containing groove (12) with an upward opening is provided in a top of the cabinet (10), the opening of the containing groove (12) is covered with a cover (13) so as to define a containing space (14) between the containing groove (12) and the cover (13), and heat dissipation holes configured to achieve communication between the containing space (14) and an external environment where the cabinet (10) is located are provided in the cover (13).

Abstract: An apparatus for converting excess liquid oxygen into liquid nitrogen, including a main heat exchanger to exchange heat between a gaseous nitrogen stream, a vaporized oxygen stream, a vapor phase nitrogen steam, and a waste liquid nitrogen stream; thereby producing a cold gaseous nitrogen stream, an oxygen vent stream, a nitrogen vent steam, and a gaseous nitrogen waste stream, a secondary heat exchanger to exchange heat between a liquid oxygen stream and the cold gaseous nitrogen stream; thereby producing the vaporized oxygen stream and a cold liquid nitrogen stream, a nitrogen pressure reduction valve to reduce the pressure of the cold liquid nitrogen stream; thereby producing a two-phase nitrogen stream, a nitrogen flash vessel to receive the two-phase nitrogen stream, and to generate a liquid phase nitrogen stream and a vapor phase nitrogen stream, wherein the apparatus does not include any refrigerant turbo-expanders, refrigerant expansion turbines, or refrigerant compressors.