Abstract: Embodiments are provided for a lighting system and a method of installing a lighting system. According to certain aspects, a driver box is configured with a plurality of drivers secured therein. A series of wired connections can couple the plurality of drivers to a plurality of luminaires and can conduct electric power from the plurality of drivers to power the plurality of luminaires. According to aspects, the driver box and its plurality of drivers are located remote from the plurality of luminaires to enable efficient maintenance of the lighting system.

Abstract: A lighting device includes a housing, at least one light source module disposed on a back surface of the housing, and a power section casing located at an upper portion of the housing, and accommodating a power unit for controlling and supplying power to the light source module. The power section casing is divided into a power section region for accommodating the power unit and at least one junction region for providing a space in which the power unit is electrically connected to an external power source. The junction region includes therein a cable fixing section for fixing an external power source cable connected to the external power source, and a ground section electrically connected to the power unit.

Abstract: A wirelessly powered airfield lighting device includes a base can and a wireless power transmitter disposed in the base can. The wireless power transmitter can wirelessly transmit power. The lighting device further includes an isolation transformer disposed inside the base can. The isolation transformer is electrically coupled to and between the wireless power transmitter and a power source. The lighting device also includes a light fixture that includes a base disposed on and sealing the top end of the base can and that includes an electronics compartment. The light fixture further includes a wireless power receiver disposed in the electronics compartment and that wirelessly receives power from the wireless power transmitter. The light fixture also includes a light source that receives power from the wireless power receiver.

Abstract: A door integrated lighted mirror system of the present invention. In the best mode, the invention includes a door mounted on a structure at least one hinge; a mirror mounted on the door; first and second illumination elements mounted on the door on opposite sides of the mirror; and means for controlling the light output by the illumination elements. In the illustrative embodiment, the illumination elements are light emitting diode arrays with outputs filtered by diffusers. A control system is mounted in the door for controlling the light output by the illumination elements. In one embodiment, the light output by the illumination elements is controlled by a first switch mounted in a hinge of the door and a second switch mounted in a door knob on the door. The control system allows the user to control the color and intensity profile of the diode arrays mounted on the door.

Abstract: An LED filament module includes an LED filament and a fireproof tube mounted on an outer surface of the LED filament. The fireproof tube includes a main body having a tubular shape and a gum layer mounted on an outer surface of the main body. The main body is made of alkali-free glass fibers weaving together. The gum layer is made of an organic silicone that is treated by vulcanization.

Abstract: A light emitting apparatus having a housing including a portion defining a thermally conductive outer surface, a light source positioned within the housing, and an internal heat sink thermally coupling the light source and the thermally conductive outer surface portion of the housing. The light source may be a solid state device, such as a light emitting diode.

Abstract: A luminaire comprising a heat spreader and a heat sink disposed around and thermally communicates with the heat spreader. The heat sink forms a trim plate configured to be disposed completely external of a can light fixture or an electrical junction box. The luminaire also includes an optic securely retained relative to one of the heat spreader and the heat sink on one side of a plane defined by a lower surface of the trim plate and extends to the other side of the plane defined by the lower surface of the trim plate, as well as a light source disposed on the heat spreader and comprising a plurality of light-emitting diodes (LEDs). The plurality of LEDs are positioned entirely on one side of the plane defined by the lower surface of the trim plate. The light source is in thermal communication with the heat spreader.

Abstract: An LED illumination device for spotlighting includes: a lower case part having a plurality of planar inner side surfaces so that a light-emitting hole on the bottom surface thereof can be a polygonal shape; an upper case part, positioned above the lower case part, for receiving a power supply unit; substrates which are respectively coupled to the planar inner side surfaces of the lower case part and in which LEDs are mounted such that a light-emitting surface can be directed to the central part of the polygon; and a plurality of heat dissipation fins which are protrudingly positioned along the circumference of the lower case part, wherein the spaces between the heat dissipation fins communicate in the longitudinal direction of the lower case part. A case is manufactured as a single structure and components such as a power supply unit, LED-mounted substrates, reflective plates, etc. can be assembled within the case through the light-emitting hole.

Abstract: The present invention provides a novel method and apparatus for a liquid-activated, lighted and flavored drink infuser. The invention enhances the water experience for any user by providing a liquid-activated, lighted, device with a dissolvable shell that, when placed in liquid, will light up and/or release into the liquid specific contents inside the infuser after the exterior dissolves.

Abstract: An arrangement and a method in a soda recovery boiler. The soda recovery boiler comprises a second pass which is provided with at least one superheater and a second pass ash hopper, a front and/or rear wall of the ash hopper being connected to steam circulation of the soda recovery boiler.

Abstract: A furnace system includes a burner assembly configured to generate combustion products within a primary combustion zone comprising one or more burners. The furnace system includes a panel disposed downstream of the burner assembly along a flow path for the combustion products, where the panel includes at least one panel opening. The furnace system also includes a secondary combustion air gap defined by one or more spacers disposed between the burner assembly and the panel, such that a secondary combustion zone is established between the burner assembly and the panel and/or downstream of the panel. The secondary combustion air gap is downstream from and external the burner assembly.

Abstract: A candle lamp suitably adapted to burn liquid fuel to support a light-emitting flame, with the candle lamp having an exterior shell that has the appearance of a traditional wax or tallow candle, and a fragrance matrix which provides a fragrance when exposed to the heat of a flame when the candle lamp is in use.

Abstract: Methods for vaporizing hydrocarbon fuel and delivering the hydrocarbon fuel in either a vaporized phase or a supercritical phase to, for example, a combustion chamber are provided herein. A method of vaporizing a hydrocarbon fuel, wherein the hydrocarbon fuel is in a liquid phase at a first temperature and a first pressure, and wherein the first temperature of the liquid phase hydrocarbon fuel is less than its intrinsic oxidation or endothermic reaction temperature, the method may include lowering a pressure of the liquid phase hydrocarbon fuel from the first pressure to a second pressure; and heating the liquid phase hydrocarbon fuel from the first temperature to a second temperature, wherein the hydrocarbon fuel at the second temperature and the second pressure is in a substantially completely vaporized phase substantially without thermally oxidizing the hydrocarbon fuel, and wherein the hydrocarbon fuel in the substantially completely vaporized phase does not form carbonaceous contaminants.

Abstract: A combustion system such as a furnace or boiler includes a non-planar perforated flame holder configured to hold a combustion reaction.

Abstract: Systems and methods for use with water-fuel supply to industrial engines are provided. A method for controlling water supplied to an engine may include using both a desired water-fuel ratio, and a compensated fuel flow. This compensated fuel flow may be calculated by a controller-implemented complementary filter, which may include receiving, by the controller, a first signal and a second signal. The complementary filter may subtract the second signal from the first signal to create an error signal, lag the error signal to create a lagged error signal, and add the lagged error signal to the second signal to create a compensated signal. The controller may calculate a water flow request using a desired water-fuel ratio and the compensated signal.

Abstract: A home cooking appliance includes a housing, a cooking surface on a top of the housing, a cooking compartment in the housing, a cooling air system conveying air through the housing, and a rear exhaust louver on the housing, the rear exhaust louver in fluid communication with the cooling air system and exhausting a portion of the air from the housing in an upward direction substantially in a plane of the rear wall of the housing to increase air pressure along a kitchen wall adjacent to the rear wall of the appliance.

Abstract: A telescoping downdraft ventilator with a system for self-aligning a vent within a housing is provided. The telescoping downdraft ventilator of the present invention comprises a housing with a side panel that includes a channel, a vent sized to fit within the housing, a drive assembly that moves the vent along the channel, and a guide attached to the vent for engaging the channel, wherein the guide is operably coupled with a biasing element. In one embodiment, a pair of guides is respectively coupled with a pair of springs and is positioned on opposite sides of the vent along a line that is substantially perpendicular to a pair of channels.

Abstract: A commercial oven, such as a combination oven providing steam and convection heating, may provide for motorized dampers allowing the oven to move automatically between a closed-state high humidity operating mode and an open-state low humidity operating mode according to user input reflecting a desired cooking process. The dampers operate with a conventional steam trap and may provide integrated bypass valves preventing over or under pressure of the cooking volume.

Abstract: The present invention relates to a heatable covering system for floors, ceilings and walls and to a method producing a heatable covering system. The covering system comprises covering panels which comprise at least on one longitudinal edge coupling means in order to be able to join covering panels with each other, wherein the covering panels are provided with electric heating means, built by at least one electrical conductive layer and a therein embedded enforcement layer, and which comprise electric contacting means.

Abstract: A heat exchange system of the invention includes at least multiple grids, a blower including an external rotor motor and a wind blade, an inner side wall, a shock absorbing pad, a compressor, and a box having multiple exhaust inlets. The exhaust inlets are disposed on the side of the box. The grids are disposed at an exhaust outlet of the box. The blower is disposed in the box and below the grid. The compressor is disposed on a bottom surface in the box. The blower is an external rotor axial fan, and the wind blade is disposed outside a rotor of the external rotor motor. The shock absorbing pad is disposed between the grids and the external rotor motor.

Abstract: An air unit includes a coil located in an air stream of the air unit. The air stream has an air flow direction. An air temperature sensor is located in the air stream of the air unit and is further located downstream, relative to the air flow direction, of the coil. A smart valve is in fluid communication with the coil and in electronic communication with the air temperature sensor. The smart valve is operable to control an amount of water flow through the coil. The smart valve receives a temperature setpoint signal, and the smart valve is programmed to modulate a valve position of a smart valve actuator based on the temperature setpoint signal and based on a signal from the air temperature sensor.

Abstract: A room condition monitor (RCM) that includes a processor with an embedded router software object that is in signal communication with a first communication connector including BACnet/IP interface for the transmission receipt of data packages over a building management system (BMS) communication network according to a BACnet/IP protocol. The RCM also includes a room condition sensor for detecting a room condition. In addition, the RCM includes a projected capacitive LCD screen display to display information regarding the detected room condition, or other building information associated with the BMS. A second communication connector with a second network protocol interface is provided for communication with network legacy devises through the RCM router.

Abstract: In one embodiment, a system for managing control units in HVAC network includes a first control unit communicatively coupled to a first plurality of HVAC units and a first interactive display, and the first control unit controls HVAC services for a first zone. A second control unit communicatively coupled to a second plurality of HVAC units and a second interactive display, and the second control unit controls HVAC services for a second zone. The first control unit may detect and connect to the second control unit using a Wi-Fi direct protocol to create an HVAC control network. The first control unit may also determine that the second control unit controls HVAC services for the second zone in response to connecting to the second control unit. The first control unit may also update the first interactive display to show the first and second zones and receive a command from the first interactive display over the HVAC control network to adjust a temperature of the second zone.

Abstract: Systems and methods for remotely controlling infrared (“IR”) enabled appliances via a networked device are described. The technology enables one or multiple users to control, monitor, and manage their appliances (e.g., air conditioners, television sets, multimedia systems, window curtains, etc.) both locally and remotely, irrespective of the users' location or their line of sight. In various embodiments, the technology includes a device with integrated Wi-Fi and IR subsystems connected via a cloud platform to a user application interface that can control appliances, generate analytics, schedule automatic operation, and perform smart learning operation.

Abstract: The present disclosure provides a method for turning on an air conditioner and a device for turning on an air conditioner, belonging to the field of smart home. The method includes: acquiring a sensor parameter collected by a sensor in a wearable device; determining a physiological parameter based on the sensor parameter; determining a change in a sleep state of a user wearing the wearable device based on the physiological parameter; detecting whether the change in the sleep state is in conformity with a predetermined condition; and turning on the air conditioner when the change in the sleep state is detected to be in conformity with the predetermined condition.

Abstract: An air-conditioning apparatus controller includes a light-emitting indicator that emits light in a plurality of colors, a main display that displays a setting screen for light-emitting indication by the light-emitting indicator, a touch panel through which an instruction related to settings displayed on the main display is input, a data processing unit of a controller that causes the main display to display the setting screen, and performs setting processing for assigning an indication color to an indication content to be provided by the light-emitting indicator, in accordance with the instruction transmitted from the touch panel, and a data storage unit that stores settings for the processing performed by the data processing unit.

Abstract: In order to achieve a reduction in energy consumption in a cooling water supply device without using a database, an equipment control device (70a) of a cooling water supply device: uses the load of a chiller, and a cooling water outlet temperature lower limit setpoint determined in accordance with the set temperature for the cooling water outlet of the chiller, to set a cooling water inlet temperature lower limit setpoint; sets, as the cooling water inlet temperature setpoint, the higher of the lower limit setpoint and the cooling water inlet temperature lower limit value as determined from the outside wet-bulb temperature; and generates a control command for a cooling tower fan and a control command for the cooling water flow volume, so as to match the cooling water inlet temperature and the cooling water outlet temperature respectively with the cooling water inlet temperature setpoint and the cooling water outlet temperature lower limit setpoint which have been set.

Abstract: Methods and systems for monitoring an air filter installed in an HVAC system may include operating the HVAC system in an air filter monitoring mode such as, for example, a fan only mode, and measuring, for example, a differential pressure across the air filter when the HVAC system is operating in the air filter monitoring mode. The method may include evaluating a status of the air filter using, for example, the measured differential pressure value, and in some cases, display the status on a display of an HVAC controller.

Abstract: An energy saving controller for an air handler having a fan and a heater or a compressor, the energy saving controller having circuitry for monitoring of ON and OFF durations of the heater if the air handler is in a heating mode, or the compressor if the air handler is in a cooling mode, in a previous cycle, and, of ON duration of a current cycle, and determining the fan's first run time extension based on the ON and OFF durations of the previous cycle and the ON duration of the current cycle.

Abstract: A method for controlling an air conditioner is provided. The method includes calculating an index weight outdoor average temperature by calculating outdoor temperature data over a predetermined period, acquiring position information in which the air conditioner is installed, selecting an appropriate climatic model according to the position information, calculating a comfortable temperature of the day by substituting the index weight outdoor average temperature to the climatic model, setting the comfortable temperature as an indoor target temperature, and controlling a cooling or a heating of the air conditioner so that the indoor temperature reaches the indoor target temperature.

Abstract: An illustrative damper system includes a damper blade, a damper actuator, and a standoff, where the standoff may be configured for use with an insulated duct having an outer surface of the duct, an insulating layer around the outer surface of the duct, and an outer surface of the insulating layer. Illustratively, the standoff may include a body, a mounting mechanism including a first flange, and a second flange spaced from the first flange, where the body, the first flange and the second flange may form an opening or space configured to receive the insulating layer. In some cases, the standoff may include one or more ribs extending between the body and the first and second flanges.

Abstract: The present invention provides an outdoor water heater (10) having a lower chamber (12) located in a cabinet (14) which substantially sealingly encloses a naturally aspirated or natural draught burner 16, a combustion chamber, a heat exchanger (18), a flue (20) for conveying combustion gases from the burner (16), the flue (20) extending away from the heat exchanger (18) and passing through a middle chamber (22) located above the lower chamber (12), the flue (20) not opening into the middle chamber (22) and opening into an upper chamber (24) which has two opposed openings (24.2, 24.3), the upper chamber (24) and middle chamber (22) being substantially sealed with respect to each other to prevent combustion gas flow between the middle chamber (22) and the upper chamber (24), and wherein the middle chamber (22) has divider formations (22.1, 22.2) separating one side of the middle chamber (22) from an opposed side of the middle chamber (22), whereby the divider formations (22.1, 22.

Abstract: The heat exchanger (1) comprises a helical flow conduit (8) for a liquid, made with a pipe (9) of extruded thermally conductive material, provided with a pair of facing and mutually parallel fins (13), which extend from a portion of the outer surface thereof. This pipe (9) is helically wound about a longitudinal axis (A-A) such as to form a sequence of adjacent turns (10) separated by interspaces (11) through which, during use, hot gases, in particular combustion fumes, flow. The fins (13) extend helically, towards the outside relative to the axis (A-A) of the helical conduit (8), and have respective pluralities of through-openings (20, 21) which interconnect the region (16) comprised between them and the interspaces (11, 14) defined with respect to the adjacent turns (10). Flow paths are thus defined through these fins (13), outside the helical conduit (9), for the hot gases which during use pass through the interspaces (11, 14) between the turns of the helical conduit (8).

Abstract: An accumulator tank for handling a heat transfer medium, may have a tank top section and a bottom section. The accumulator tank may be connected to at least one heat-emitting system and at least one heat-absorbing system. The accumulator tank may have a plurality of partition walls located inside the tank and arranged between the bottom section and the top section for the purpose of dividing the tank into a plurality of spaces. The systems may be connected to at least one respective space so that a temperature gradient is created between the bottom section and the top section. Also disclosed is a system for distributing and handling heat and/or cold, the accumulator tank.

Abstract: A system for mounting a heater to structural members having a predetermined spacing includes a first mounting bracket having first and second mounting locations. The first and second mounting locations are spaced apart by a first integer multiple of the predetermined spacing. The system also includes a second mounting bracket having third and fourth mounting locations. The third and fourth mounting locations re spaced apart by the first integer multiple of the predetermined spacing. The system further includes a plurality of attachment points on the heater for attaching the first and second mounting brackets to the heater. The plurality of attachment points is arranged to locate the first, second, third, and fourth mounting locations in a mounting plane, with both the first and the third mounting locations and the second and the fourth mounting locations being spaced apart by a second integer multiple of the predetermined spacing.

Abstract: A water heater having a monitoring mechanism, an appliance burner configured to heat water in a tank of a water heater, a water temperature sensor configured to detect a water temperature in the tank, a pilot device configured to ignite the appliance burner, and a thermopile having a tip and a base, and having an output voltage that represents a temperature difference between the tip and the base. The tip of the thermopile may be heated by the pilot device. The base of the thermopile may receive heat from the appliance burner when the appliance burner is turned on, and thus the voltage output of the thermopile may decrease. If the voltage output does not decrease and the water temperature exceeds a thermal cutout limit, then a warning about the water heater may be issued by the monitoring mechanism.

Abstract: A circuit comprises a mechanical relay and a solid-state relay. The mechanical relay is configured to switch a first supply current of the first heating element on a first supply line. The solid-state relay is configured to switch a second supply current of a second heating element on a second supply line.

Abstract: A solar energy collection system includes a reflector configured to reflect and focus a majority of solar energy from visible light and infrared spectra. The solar energy collection system also includes a light trap configured to receive concentrated solar energy from the reflector. The light trap includes a black body that is configured to absorb a majority of the concentrated visible light and infrared energy and convert the absorbed energy into thermal energy.

Abstract: A system and method for reducing the refrigerant charge in a refrigeration system by preheating the liquid refrigerant before it is introduced to the evaporator inlet. When refrigerant liquid is introduced to the evaporator inlet, a portion of the refrigerant liquid vaporizes. This refrigerant vapor displaces refrigerant liquid at the inlet of the evaporator. As more refrigerant vapor is introduced, the amount of liquid inside the evaporator is reduced. A heat exchanger is placed before the liquid refrigerant inlet of the evaporator to generate more vapor when the refrigerant enters the evaporator.

Abstract: A hybrid air handler cooling unit has a bi-modal heat exchanger. In a direct expansion mode or a pumped refrigerant economization mode, the bi-modal heat exchanger is in a refrigerant path in parallel with first and second condenser coils and functions as a condenser coil. In a mixed direct expansion/pumped refrigerant economization mode, the bi-modal heat exchanger is in a refrigerant path in series between an outlet of a pump and an inlet of the first condenser coil and functions as a pre-cooler evaporator coil with return air first flowing across the bi-modal heat exchanger and then across an evaporator coil of an evaporator.

Abstract: A temperature control unit includes a temperature control body made of magnetocaloric material and elongated in a longitudinal direction (L), through which or/and around which heat transfer medium can flow. A magnetic field arrangement (16) has magnetic field heating areas (22) arranged following one another in a shifting direction (V) and cooling areas (24) between the magnetic field heating areas (22). A plurality of heat transfer medium flow zones (Zi) following one another in the longitudinal direction (L) are provided with the temperature control body (14). At least two heat transfer medium flow zones (Zi) adjacent to one another in the longitudinal direction (L) of the temperature control body provide a heat transfer medium circulation sector (I, II, III, IV). Heat input fluid, flowing relative to heat transfer medium flow zones (Z1), feed heat in and heat discharge fluid flowing relative to heat transfer medium flow zones (Z8) discharging heat.

Abstract: A helmet attachment is provided, comprising: a shell having a concave bottom; a base having: a convex top affixed to the concave bottom of the shell; a concave bottom affixable to the convex top of a helmet; and an air flow channel formed in the convex top of the base for guiding air through to an exit in the concave bottom of the base; a power and electronics module secured within a cavity in the shell, comprising: a power source; and a 5 volt power output connector electrically coupled to the power source and configured for charging a small electronic device; and a heater electrically coupled to the power source.

Abstract: An active temperature controlled container is configured to be portable so as to safely transport temperature sensitive and perishable goods (such as biological material): within a vessel that is thermally coupled to a thermoelectric assembly disposed within the container, where the thermoelectric assembly is powered by a battery. The battery is secured within a compartment in an outer portion of the housing of the container in a way that the battery may be removed to be recharged, inspected, swapped out for another battery or power source, or the like.

Abstract: This invention relates to of a cooling device (1) comprising a compressor (2) which compresses the refrigerant fluid, a condenser (3) which enables the superheated vapor exiting the compressor (2) change to first a liquid-vapor phase then liquid phase entirely, a compressor cabinet (8) positioned separately from the cooling cabinet (7), into which the compressor (2) and the condenser (3) are positioned, one or more evaporators (4), and one or more capillary tubes (5) interposed between the compressor cabinet (8) and the evaporator (6), and a control method thereof.

Abstract: The invention discloses an electronic expansion valve. The electronic expansion valve includes: a valve body (10), a first chamber being formed in the valve body (10), a liquid inlet (11) and a liquid outlet (12) being oppositely provided at two ends of the valve body (10); a second chamber, provided in the first chamber, a coil (20) being provided in the second chamber; a third chamber, an inlet end of the third chamber being communicated with the liquid inlet (11), an outlet end of the third chamber being communicated with the liquid outlet (12), the inlet end of the third chamber and the outlet end of the third chamber being coaxially provided, and a valve core (31) being provided in the third chamber; and the first chamber being communicated with the liquid inlet (11) via the first liquid passage hole (33).

Abstract: A condenser includes a condensation section, a super-cooling section located above the condensation section, and a liquid receiver. The liquid receiver has a first space communicating with the condensation section through a refrigerant inlet and a second space located above the first space and communicating with the super-cooling section through a refrigerant outlet. A suction pipe which is open at upper and lower ends thereof and which establishes communication between the first space and the second space is disposed in the first space. A tubular flow control member whose upper end is open is disposed around the suction pipe such that the refrigerant having flowed into the first space through the refrigerant inlet hits against the flow control member and changes its flow direction. Since the refrigerant inlet is located within the vertical range of the flow control member, the refrigerant hits against the flow control member.

Abstract: A container treatment installation having a refrigeration installation, and a method for starting the operation of a refrigeration installation of a container treatment installation, are provided. The refrigeration installation comprises a refrigerant vessel for receiving a refrigerant which can be used for cooling a component of the container treatment installation, and a control device for controlling an amount of the refrigerant in the refrigerant vessel such that, after operation of the refrigeration installation, only a predetermined residual amount of refrigerant remains in the refrigerant vessel for the transport of the refrigerant installation, and after the transport of the refrigeration installation, the predetermined residual amount is filled up with a predetermined replenishment amount of refrigerant.

Abstract: An air conditioning system can be toggled between a heating mode, in which heat is withdrawn from a source (e.g., a geothermal source) and deposited into a conditioned space (e.g., a building), and a cooling mode, in which heat is withdrawn from the conditioned space and deposited into the source. The air conditioning system uses a combination of efficiency-enhancing technologies, including injection of superheated vapor into the system's compressor from an economizer circuit, adjustable compressor speed, the use of one or coaxial heat exchangers and the use of electronic expansion valves that are continuously adjustable from a fully closed to various open positions. A controller may be used to control the system for optimal performance in both the heating and cooling modes, such as by disabling the economizer circuit and vapor injection when the system is in the cooling mode.

Abstract: A hail producing machine includes at least one diffuser for mixing water and carbon dioxide. At least one heat exchanger is in flow communication with the diffuser for receiving the mixture. A refrigeration unit freezes the mixture to form an ice rod in the heat exchanger. The ice rod is ejected from the heat exchanger and is converted into hail stones by a molding station downstream from the heat exchanger.

Abstract: A refrigerator includes an ice-making unit disposed in the door and can make ice through direct cooling by a refrigerant without using cold air flow. A cold air generation system operates to circulate the refrigerant for supplying a cold air flow for the refrigerator. A refrigerant pipe is installed in the refrigerator main body to branch off some refrigerant from the cold air generation system. An ice-making pipe is installed within the ice-making unit and receives the refrigerant from the refrigerant pipe. Water freezes into ice through heat transfer between the ice-making unit and the ice-making pipe containing refrigerant. A soft pipe is disposed around a hinge shaft of the refrigerator main body and the door and configured to interconnect the ice-making pipe and the refrigerant pipe in a twistable manner.