Abstract: The present disclosure discloses an easily-assembled/disassembled lighting fixture. A power supply module includes a power supply body, a lifting ring, and a first connecting assembly. A female power connector in the power supply body protrudes out of a bottom of the power supply body, the lifting ring is connected to a top of the power supply body in a threaded manner, and the first connecting assembly is fastened to the bottom of the power supply body by using a screw. The power supply module is buckled to a first buckle assembly at a top of a lamp body by using the first connecting assembly, and the female power connector is inserted into a male power connector inside the lamp body. An optical lens is buckled to a second buckle assembly at a bottom of the lamp body by using a first buckling slot.

Abstract: A light body connecting structure, a light group, and an assembling method of the light group are provided. The light body connecting structure includes a wiring terminal electrically connected with a light body and a wire. The wiring terminal includes a terminal body and a plug assembly. The terminal body is matched with any opening of a lampshade. The plug assembly is connected with a first end of the terminal body. One end of the wire passes through a second end of the terminal body and is electrically connected with the plug assembly. The plug assembly is connected with the terminal body, so that the plug assembly is connectable to lampshades of different sizes, and the light body connecting structure is adapted and mounted with a light body in any of the lampshades, which is versatile and reduces production cost.

Abstract: A telescopic lighting structure includes a telescopic rod composed of a rod body and a detachable terminal rod. The terminal rod has a light-emitting module and a power switch. The light-emitting module and the power switch do not protrude beyond the surface of the terminal rod, thus the terminal rod can be completely retracted into the rod body, making it easy to store and protect the light-emitting module. A power supply assembly is provided inside the terminal rod. The power supply assembly controls the connection with the light-emitting module through the power switch. Through this structural design in which the power supply assembly, the light-emitting module and the power switch are arranged on the terminal rod, the telescopic rod can be stretched so that the light-emitting module has a higher lighting height. Further, the terminal rod can be removed to provide illumination alone, thereby increasing the scope of application.

Abstract: The invention relates to a lighting apparatus for coupling to an LED driver. The lighting apparatus comprises a plurality of LEDs in a series connection arranged to form an LED string having a first end and a second end, a heatsink thermally coupled to the LED string, wherein the heatsink is electrically conductive, a capacitor coupled between the first end of the LED string and the heatsink and an electrical connection between the second end of the LED string and the heatsink.

Abstract: The present disclosure relates to the technical field of cable fixing, in particular, to a cable clamp applied to a junction box of lighting fixture, and a junction box of lighting fixture thereof. The cable clamp includes a cable threading framework for fixing and a fastening plate mounted on the cable threading framework, wherein the fastening plate is provided with a rotating shaft part and a flip part integrally formed with the rotating shaft part; and the fastening plate is rotatably connected to the cable threading framework through the rotating shaft part. A cable can be perpendicularly threaded into the junction box through the cable clamp.

Abstract: An LED lamp includes: a lamp shell having a circular cross-section along a central axis of the lamp shell comprising a lamp neck and a sleeve; a heat sink comprising a plurality of fins, sleeving over the sleeve and connecting to the lamp neck; a power source comprising a power board and a plurality of electronic components mounted thereon disposed in the lamp neck and the sleeve; a light board comprising an opening at center portion and disposed at second end of the heat sink and physically and thermally connecting to the heat sink; a plurality of LED chips mounted on the light board and electrically connecting to the power source; and a lamp cover disposed at the second end of the heat sink and covering the plurality of LED chips; wherein the sleeve and the opening of the light board defines a first heat dissipating channel, the plurality of fins and the opening of the light board defines a second heat dissipating channel, the first heat dissipating channel and the second heat dissipating channel share the

Abstract: A light fixture may include a caged frame that includes spokes enclosing a globe. The frame may be configured to enable removal of one or more of the spokes to create clearance for replacement of a broken globe. The frame may include one or more frame bases. Each frame base may include inner and outer supports that retain ends of spokes therebetween when the fixture is assembled. The outer support may be configured to retain some spoke ends in a manner that may require a tool to remove them from the outer support. The inner support may be configured to enable one or more spoke ends to be removed from the inner support without a tool. The frame bases may be loosened to remove one or more removable spokes to create a temporarily larger clearance in the frame for globe replacement.

Abstract: A portable light up mirror includes a mirror element, a case element for installing the mirror element, a cover element which is coupled with the case element for covering the mirror element, and a light source which is arranged behind the mirror element within the case element for providing even and glare-free illumination, so that the adequate lighting minimizes shadows on a user's face and give the user a more accurate view when grooming or applying cosmetics.

Abstract: An illumination device includes a transparent light guide plate having an end face being an incident surface and a bend between the incident surface and a distal end face opposite to the incident surface, and a light source facing the incident surface. The light guide plate includes first prisms on a first surface extending from the incident surface to the bend to reflect light from the light source entering the light guide plate through the incident surface and emit light through a second surface opposite to the first surface, and second prisms on a third surface extending from the distal end face to the bend to reflect light from the light source entering the light guide plate through the incident surface and emit light through a fourth surface opposite to the third surface.

Abstract: The present application provides an adjustable lamp with a strip-shaped light spot, including: a lamp body, where a lamp panel is disposed in the lamp body; an optical lens, where the optical lens is fitted on the lamp panel and is fixedly connected to the lamp body; and an adjustment assembly, where the adjustment assembly is disposed on the lamp body; where when the lamp panel emits light, the light is projected by using the optical lens by changing the light into a strip-shaped light spot, and an angle of the lamp body is adjusted by using the adjustment assembly, so as to change a projection direction of the strip-shaped light spot.

Abstract: A phosphor element includes a phosphor part including an incident face of the excitation light, opposing face opposing the incident face, and side face, the phosphor part converting at least a part of the excitation light incident onto the incident face to fluorescence and emitting the fluorescence from the opposing face or incident face, and a heat dissipating substrate provided on the side face of the phosphor part. The heat dissipating substrate is composed of a metal plating film composed of a metal having a thermal conductivity of 200 W/mK or higher.

Abstract: A light-emitting device includes: a light source that radiates primary light; and a first phosphor that absorbs the primary light and converts the primary light into first wavelength-converted light having a longer wavelength than the primary light, the first wavelength-converted light includes fluorescence based on electron energy transition of Cr3+, and a fluorescence spectrum of the first wavelength-converted light has a maximum fluorescence intensity value in region of a wavelength exceeding 710 nm.

Abstract: An optical element includes a first liquid crystal cell and a second liquid crystal cell. The first liquid crystal cell and the second liquid crystal cell are stacked. Each of the first liquid crystal cell and the second liquid crystal cell includes a first substrate on which a first transparent electrode and a second transparent electrode are alternately and repeatedly arranged in a first direction, a second substrate on which a third transparent electrode and a fourth transparent electrode are alternately and repeatedly arranged in a second direction intersecting the first direction, and a liquid crystal layer between the first substrate and the second substrate. The second substrate of the first liquid crystal cell and the first substrate of the second liquid crystal cell are adjacent to each other.

Abstract: A burner (1) for the production of synthesis gas, configured to feed a reactant stream and an oxidant stream into a reaction chamber, the burner comprising at least one cooled component (11, 12), wherein said cooled component comprises channels (20) to convey a cooling medium, a cooling medium header (24) and a cooling medium collector (25), wherein said channels, said cooling medium header and said cooling medium collector are integrally formed within said cooled component of the burner.

Abstract: Boiler equipment includes: a combustion device including a combustion chamber to combust fuel supplied to the combustion device; a combustion furnace including a combustion chamber formed inside thereof; and a heat exchanger transferring thermal energy obtained by combustion of the fuel in the combustion device to water. The combustion device is directly connected to a wall part of the combustion furnace such that the combustion chamber of the combustion device faces the combustion chamber of the combustion furnace. The fuel is efficiently combusted in the combustion chambers of the combustion device and the combustion furnace, which are integrated with each other. Thus, almost no ash is generated.

Abstract: A regulation device for regulating a mixing ratio (x) of a gas mixture comprises a first conduit (1) for carrying a flow of a first gas (e.g., air) and a second conduit (2) for carrying a flow of a second gas (e.g., a fuel gas). The first and second conduits (1, 2) open out into a common conduit (3) in a mixing region (M) to form the gas mixture. A first sensor (S1) is configured to determine at least one thermal parameter of the gas mixture downstream from the mixing region. A control device (10) is configured to receive, from the first sensor, sensor signals indicative of the at least one thermal parameter of the gas mixture and to derive control signals for adjusting device (V1) acting to adjust the mixing ratio, based on the at least one thermal parameter.

Abstract: This invention relates to a method of monitoring a burner (2) and/or a burning behavior of a burner (2) by means of a measured ionization signal. The invention consists in that the ionization signal is measured between an ionization electrode (4, 4?) and a counter-electrode (3) spaced apart from a burner surface (2?) of the burner (2). Furthermore, the invention relates to a burner assembly.

Abstract: A lighter includes (a) a lighter body for storing fuel; (b) a lighter head extending upwardly from the lighter body to an outlet of the head for directing flow of the fuel toward the outlet; (c) an integrated ignition system for selectively releasing and igniting the fuel to produce a flame projecting along a flame path from the outlet; and (d) a replaceable flame-coloring insert including an insert body removably mounted to the lighter head adjacent the outlet. The insert body treated with a flame colorant positioned in the flame path for coloring the flame when heated.

Abstract: Proposed is a combustor that includes a liner provided with a combustion chamber at an inner side of which a mixture of fuel and compressed air is combusted, a transition piece connected to an end of the liner, a fluid-flowing sleeve disposed at an outer side of the liner and the transition piece, and at least one injector configured to inject the mixture of fuel and air by being disposed on the liner or the transition piece, wherein the injector includes an injection pipe connected to the liner or the transition piece, a fuel supply unit configured to supply the fuel from a center part of a rear end of the injection pipe, and an air supply unit configured to supply the air from an inner circumferential part of the rear end of the injection pipe.

Abstract: A stand is provided for elevating a portable stove above a surface. The stand includes a plurality of legs. Each leg includes an outer link connected by a hinge. The outer link is thus movable to a position extending radially outward. Each leg also includes a foot coupled to the outer link.

Abstract: Pellet grills and associated methods of operation are disclosed. An example pellet grill includes a lid, a cooking chamber, an engine, and one or more processors. The lid is movable between a closed position and an open position. The engine is configured to output heat to the cooking chamber. The one or more processors are configured to detect a closing movement of the lid. In response to detecting the closing movement, the one or more processors are configured to command the engine to operate in an increased output mode that increases the heat output of the engine.

Abstract: A cooking appliance includes a housing having a heating cavity defined therein, wherein a heat source is in thermal communication with the heating cavity. A cooling channel is disposed proximate a sidewall of the housing. A blower selectively operates to move at least cooling air through the cooling channel and to an air outlet. A vent aperture extends through the sidewall between the heating cavity and a ventilation channel. The ventilation channel includes a narrowed portion proximate the vent aperture, wherein during operation of the blower, the narrowed portion defines a low static pressure region of the ventilation channel that draws cavity air from the heating cavity and directs the cavity air into the ventilation channel to be combined with the cooling air.

Abstract: A home appliance is provided. The home appliance includes a main body having an opening, a door disposed on one side of the main body, the door being configured to open or close the opening, and a damping assembly configured to be operated by the door. The damping assembly includes a first lever installed in the main body, the first lever being configured to be movable when the door is pressed, a second lever connected to the first lever, and a cylinder connected to the second lever, the cylinder being configured to be movable in a direction that is parallel to a movement path of the first lever.

Abstract: A mobile recirculation grill platform includes: a stationary frame formed of modular frame segments configured to support a cooktop and internal grill components; a mounting slot defined on each of modular frame segments extending a length of the frame segment; and a mobile frame formed of modular frame segments and slidably connected to the stationary frame, the mobile frame configured to support a plurality of the internal grill components. The mobile frame is configured to slide in and out of the stationary frame. Each modular frame segment extends a length that is configured to be customizable, can be capped by a connecter positioned at each end of the modular frame segment and configured to mount within the mounting slot of another modular frame segment. Each connector includes protrusions spaced apart to define channels therebetween configured to engage and mount within the mounting slot of another modular frame segment.

Abstract: A knob assembly includes a front panel, a knob located at a front side of the front panel and configured to rotate based on operation by a user, a knob shaft that is coupled to the knob and that extends through the front panel, a supporting pipe that receives the knob shaft and that supports the knob shaft, the supporting pipe being configured to maintain a position relative to the front panel, a valve configured to control supply of gas to the appliance, a valve shaft connected to the valve and configured to control the valve to adjust a flow rate of gas based on rotation of the valve shaft, and a joint that couples the knob shaft to the valve shaft and that is configured to transfer at least one of a rotational motion or a linear motion of the knob shaft to the valve shaft.

Abstract: An eccentric knob assembly is coupled to a gas valve of a gas appliance. The cooking surface of the gas appliance has an arcuate opening space away from the gas valve. The gas valve can be actuated by rotation of an actuator pin positioned in the arcuate opening that is connected to the knob and the gas valve.

Abstract: An appliance is provided with a cavity wrapper defining a cooking chamber therein. An embossment is formed in a wall of the cavity wrapper and protrudes within the cooking chamber. The embossment has a leading sloped portion. A shroud is located adjacent the wall and includes an outer perimeter edge that is spaced from the embossment thereby defining an exhaust port therebetween. A bracket is disposed outside the cavity wrapper and includes a pair of mounting tabs affixed to an external surface of the wall of the cavity wrapper. The pair of mounting tabs straddling the embossment in a staggered formation.

Abstract: The system is preferably used with a cooking appliance with a heating cavity and can include: a vessel and a temperature probe. The system can optionally include: a lid, a tray, and/or a circulator. However, the system can include any other suitable components. The system functions to monitor and/or control the temperature of a volume of working fluid in a cooking appliance with a heated cavity.

Abstract: The present disclosure provides a computer-implemented method of defrosting a heat pump of a water provision system installed in a building, the water provision system comprising the heat pump configured to transfer thermal energy from outside the building to a thermal energy storage medium inside the building and a control module configured to control operation of the heat pump, the water provision system being configured to provide water heated by the thermal energy storage medium to an occupant of the building at one or more water outlets, the method being performed by the control module and comprising: determining, based on performance of the heat pump, an expected start time of a next defrost cycle; and preparing the water provision system before the expected start time of the next defrost cycle.

Abstract: A self-contained HVAC system is a single structure having a sequential arrangement of coupled housings. At least two housings are offset with respect to one another in two dimensions. HVAC components are disposed throughout and within the coupled housings. The HVAC components include operational components interconnected by electrical lines and fluid-carrying lines where the HVAC components are operable to generate at least one of heated air and cooled air.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) blower assembly includes a motor and a fan wheel, wherein the motor drives rotation of the fan wheel about an axis of rotation. A blower housing accommodates the fan wheel within a hollow portion and is defined by a base, a curved boundary, a front boundary, and a rear boundary. An inlet port extending through the front boundary facilitates intake of airflow into the fan wheel. An outlet port extending through the base facilitates expulsion of the airflow from the fan wheel. A first portion of the curved boundary includes an involute profile and a second portion of the curved boundary includes a footing extending from the first portion to the base such that airflow exiting through the outlet port is guided away from the fan wheel by an interior-facing surface of the footing.

Abstract: The centrifugal fan includes a base plate connected to a rotating shaft of a motor, a plurality of blades joined to a surface of the base plate, and a ring-shaped shroud joined to the plurality of blades to face the base plate. The blade is provided in such a way that a length of one end joint portion joined to the base plate is greater than a length of another end joint portion joined to the shroud, and with respect to a plane perpendicular to a rotation axis, an angle between a first straight line, which connects a leading edge position and a trailing edge position of the one end joint portion, and a straight line passing through a center point of the first straight line and a rotation center is less than an angle between a second straight line, which connects a leading edge position and a trailing edge position of the other end joint portion, and a straight line passing through a center point of the second straight line and the rotation center.

Abstract: A heat exchanger includes a main pipe through which refrigerant flows, a plurality of tubes connected to the main pipe to allow refrigerant passing through the plurality of tubes to exchange heat with air, and a refrigerant distributor disposed between the main pipe and the plurality of tubes, to distribute refrigerant passing through the main pipe to the plurality of tubes. The refrigerant distributor includes an upstream structure connected to the main pipe and including a plurality of first distribution flow paths to which the refrigerant passing through the main pipe are distributed, and a downstream structure including a plurality of second distribution flow paths communicating with the plurality of first distribution flow paths, and a plurality of refrigerant outlets communicating with the plurality of second distribution flow paths so as to allow the refrigerant to be discharged to the plurality of tubes.

Abstract: An air conditioner includes: an outer housing that contains therein one or more of a condenser, a compressor, coils, a fan, an enclosure air intake, and an enclosure air return; one or more rainwater drains configured to transmit rainwater that enters the housing through the outer housing to ambient; and one or more condenser drains configured to transmit condensation from within the outer housing to an exterior location via one or more conduits.

Abstract: The present disclosure relates to a control system for a heating, ventilation, and/or air conditioning (HVAC) system. The control system includes a user interface configured to receive a first input indicative of a first expected operating range of a first parameter in a first zone and to receive a second input indicative of a second expected operating range of a second parameter in a second zone. A first set point for the first parameter is within the first expected operating range and a second set point for the second parameter is within the second expected operating range. The control system includes a controller configured to manage operation of the HVAC system and to provide a first alert in response to the first parameter being outside of the first expected operating range and a second alert in response to the second parameter being outside of the second expected operating range.

Abstract: An air conditioning device includes a first indoor unit and a second indoor unit interlocking with a safety device as a countermeasure against refrigerant leakage. An installation assistance system for the air conditioning device determines interlock release states of the first indoor unit and the second indoor unit based on information on the air conditioning device, and outputs a determination result. The information on the air conditioning device is information indicating whether or not the first indoor unit and the second indoor unit are short-circuited with the safety device through an interlock line.

Abstract: A control method and apparatus for water pumps in an air conditioning system. The control method includes: obtaining the number of water pumps currently running, the current speed ratios and the current running lift of the water pumps; calculating a control range of the speed ratios; determining whether the current speed ratios are in the control range of the speed ratios; switching the number of running water pumps so as to enable the speed ratios of the water pumps to fall within the control range of the speed ratios. The number of water pumps can be switched according to the running number of water pumps and the lift of the water pumps, allowing the water pumps to run in the high-efficiency interval under the full-load working condition to achieve variable-frequency energy-saving control of the water pumps and reduction of running power consumption of the air conditioning system.

Abstract: A server is connected to a mobile terminal and a plurality of air conditioners via a communication line. A storage stores installation position data including space information indicating a space in which the plurality of air conditioners are installed, and layout information indicating installation positions of the plurality of air conditioners in the space. A receiver receives a request to transmit the installation position data from the mobile terminal, and a signal to confirm an installation position of a first air conditioner of the plurality of air conditioners in the installation position data. A transmitter reads the installation position data from the storage, and transmits the installation position data to the mobile terminal when receiving the request for transmitting the installation position data. A control calculation unit drives an actuator of the first air conditioner when receiving the signal to confirm the installation position from the mobile terminal.

Abstract: The present application provides an optimized regulating and controlling method and system for an integrated electricity and heat system with heat pumps, relating to the technical field of energy operation. According to the present application, regulating and controlling can be performed by regarding units as different agents and taking maximization of the self-interest of each agent as the objective, so that the load demands of heat and power consumers can be met, and each unit agent can be satisfied with its payoff to the greatest extent. The method includes: S1. establishing a composition and structure framework of the integrated electricity and heat system with heat pumps, and establishing an output model of each unit; S2. establishing a payoff function model of each unit in the integrated electricity and heat system with heat pumps; S3. establishing a non-cooperative game model of the integrated electricity and heat system with heat pumps; and S4.

Abstract: Control process of a thermal plant including a distribution circuit for a carrier fluid having a delivery line and a return line, a central thermal treatment group placed on the circuit, and channels, each of which is hydraulically interposed between the delivery line and the return line to serve respective environments. For each of the channels, the plant includes a respective exchange unit, a flow regulator to regulate a flow rate of carrier fluid through in the respective channel, an ambient temperature detector, a temperature detector of the carrier fluid for detecting a delivery temperature of the carrier fluid in each channel, and a return temperature of the carrier fluid in each channel. The process also includes a thermal optimization procedure as a function of ambient temperature, delivery temperature and return temperature of the carrier fluid.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) system includes a compressor, a fan, an inverter configured to drive operation of the compressor, and a controller communicatively coupled to the fan and the inverter. The controller includes a tangible, non-transitory, computer-readable medium with computer-executable instructions that, when executed by processor circuitry, are configured to cause the processor circuitry to determine an operating parameter of the fan in response to an interruption in receiving communication signals from the inverter and operate the fan based on the operating parameter during the interruption.

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: A blower is disclosed. The blower includes a fan configured to generate flow of air, a lower body providing an internal space in which the fan is installed, and having a suction hole through which air passes, an upper body positioned over the lower body and providing an internal space in which air discharged from the fan flows, a damper positioned behind the upper body, and a discharge port formed between an end of the upper body and an end of the damper, in which the upper body includes an opening formed at a rear end of the upper body and communicating with the internal space of the upper body, and the damper opens and closes the discharge port while moving in a front-rear direction behind the opening.

Abstract: An adaptor device configured to provide a fluid connection into an interior of a conduit section through an access point opening through a sidewall thickness of the conduit section may include an adaptor conduit structure defining a base conduit extending from an adaptor inlet to a base conduit outlet, a conduit connector configured to couple with the conduit section, and an elbow nozzle defining an elbow conduit extending to an adaptor outlet at a distal end and further configured to expose the elbow conduit at a proximate end to the base conduit to collectively define an adaptor conduit extending between the adaptor inlet and outlet. The elbow nozzle is configured to extend through the access point opening in a first direction into the interior and to further extend to the distal end within the interior in a second direction that is different from the first direction.

Abstract: Disclosed is a window air conditioner drain that includes a main body having a drain side and an interfacing side. The drain side includes a funnel structure that narrows to a tube attachment portion of the funnel structure. The window drain further includes a magnetic attachment mechanism configured for magnetically attaching the main body to a window air conditioner such that the main body covers a drainage hole of the window air conditioner. Further disclosed is a window air conditioner drain kit incorporating the window air conditioner drain, and a kit that includes the window air conditioner drain, magnets and/or a flexible tube.

Abstract: Disclosed herein are systems and methods for reducing startup time of an equipment front end module (EFEM). The EFEM may include an EFEM chamber formed between a plurality of walls, an upper plenum above the EFEM chamber, the upper plenum in fluid communication with the EFEM chamber, a plurality of ducts that provide a return gas flow path enabling recirculation of gas from the EFEM chamber to the upper plenum, one or more filters that separate the upper plenum from the EFEM chamber, an isolation gate configured to block the return gas flow path responsive to the isolation gate being actuated to a closed position to isolate the one or more filters from an ambient environment responsive to a gas being flowed through the upper plenum when the EFEM chamber is opened to the ambient environment.

Abstract: A solar photovoltaic powered phase change material thermal energy storage system includes a refrigerator unit having a phase change material (PCM) tank and a photovoltaic (PV) panel to provide electrical energy to the PCM tank to melt a PCM stored therein. The PCM tank includes a refrigeration coil immersed in the PCM and configured to circulate refrigerant to between the PCM tank and a condenser. Energy released and absorbed during solidification and melting of the PCM is used to support an air-conditioning (AC) unit and substitute power used by a compressor of the AC unit, to handle demand during peak hours, thereby reducing overall power requirement of a facility. The melting of the PCM is also controlled, so that the AC unit may operate with the aid of the PCM for longer duration during the day.

Abstract: A solar photovoltaic powered phase change material thermal energy storage system includes a refrigerator unit having a phase change material (PCM) tank and a photovoltaic (PV) panel to provide electrical energy to the PCM tank to melt a PCM stored therein. The PCM tank includes a refrigeration coil immersed in the PCM and configured to circulate refrigerant to between the PCM tank and a condenser. Energy released and absorbed during solidification and melting of the PCM is used to support an air-conditioning (AC) unit and substitute power used by a compressor of the AC unit, to handle demand during peak hours, thereby reducing overall power requirement of a facility. The melting of the PCM is also controlled, so that the AC unit may operate with the aid of the PCM for longer duration during the day.

Abstract: A semiconductor fabrication building is provided. The semiconductor fabrication building includes an ambient control surrounding and a makeup air handling unit configured to supply clean air to the ambient control surrounding. The makeup air handling unit includes a housing having an air inlet and an air outlet. The makeup air handling unit also includes a first filtration module positioned in the housing. The first filtration module includes a number of hollow fibers configured to guide air to flow from the air inlet to the air outlet. A porous layer is formed at an inner wall of each of the hollow fibers to filter airborne molecular contamination (AMC) having a selected size.

Abstract: Some embodiments of the present disclosure provide an electric heater, which includes: a housing provided with an air inlet and an air outlet, and the housing internally having an air duct communicated between the air inlet and the air outlet; and a heating member and a convection member both being assembled in the air duct, wherein the heating member being configured for heating the air entering from the air inlet to the air duct during energization, the convection member being configured for blowing a heated air from the air duct to the air outlet for discharging. Herein the air outlet is provided on a bottom end of the housing close to a ground.