Abstract: The present disclosure provides an exhaust system for discharging from semiconductor manufacturing equipment a hazardous gas. The exhaust system includes: a main exhaust pipe having a top surface and a bottom surface; a first branch pipe including an upstream end coupled to a source of a gas mixture containing the hazardous gas and a downstream end connected to the main exhaust pipe through the top surface; a second branch pipe including a downstream end connected to the main exhaust pipe through the bottom surface; and a detector configured to detect presence of the hazardous gas in the second branch pipe.

Abstract: A memory circuit includes a first driver circuit, a first column of memory cells coupled to the first driver circuit, a first current source, a tracking circuit configured to track a leakage current of the first column of memory cells, and a footer circuit coupled to the first column of memory cells, the first current source and the tracking circuit.

Abstract: A precursor supply cabinet for accommodating one or more precursor containers having cabinet walls defining an inner cabinet space. The precursor supply cabinet includes a ventilation discharge connection arranged to discharge ventilation gas from the inner cabinet space, one or more ventilation inlet connections, two or more separate gas tight precursor supply chambers for accommodating precursor containers. The gas tight precursor supply chambers are arranged inside the inner cabinet space of the precursor supply cabinet such that the inner cabinet space of the precursor supply cabinet surrounding the separate gas tight precursor supply chambers is ventilated.

Abstract: An apparatus for preparing food having a heating device with hot plate, a filter device and a cover device, which is in operative connection with the filter device and has an upper side, an underside and side surfaces. The cover device, on the underside, has at least one entry opening of a flow channel for exhaust air, the flow channel being arranged in the interior of the cover device. The flow channel, on a first side surface, has an exit opening, wherein the exit opening can be positioned such that the exhaust air can flow via the exit opening into an entry opening of the filter device.

Abstract: Fabric drop-down diffusers are disclosed. An example drop-down diffuser includes a first fabric sheet. The first fabric sheet is to extend away from a ceiling at a location adjacent a supply inlet. The supply inlet is to provide a flow of air toward the first fabric sheet. The example drop-down diffuser also includes a blanking sheet to restrict air flow through the first fabric sheet. The blanking sheet is to be disposed on an interior surface of the first fabric sheet. The blanking sheet has a lower permeability than the first fabric sheet.

Abstract: A ventilation system is disclosed comprising a main duct (101) connected to at least one motorized fan (105), and further connected to at least one workplace (Wa; Wb; Wc) via a local duct arrangement (102a; 102b; 102c). The local duct arrangement comprises an asymmetrical bend duct section (106). A first and a second pressure sensor (120,122) are arranged on different positions on the outside of the bend duct section and in communication with the interior thereof. The pressure sensors are configured to communicate with a control computer (200) configured to determine a pressure difference between the positions of the sensors and to control the speed of the fan. Further, a method of operating a ventilation system is disclosed and also an asymmetric bend duct section and the use thereof.

Abstract: A fume extraction apparatus having an outer conduit with a first elongated open area extending at a first angle and an inner conduit configured for connection to a venting system and received within the outer conduit. The conduits are rotatable relative to one another. The inner conduit has a second elongated open area extending at a second angle different from the first angle. Overlapping portions of the open areas defines an extraction aperture providing a fluid communication between an environment of the outer conduit and an interior of the inner conduit. Different relative orientations of the conduits define different positions of the extraction aperture, so that the extraction aperture is movable upon relative rotation of the inner and outer conduits. A method of extracting fumes during operation of a laser head is also discussed.

Abstract: A vent hood kit comprises a canopy assembly having an intake end and an outlet end, a blower housing selectively and alternatively coupled with the exhaust end of the canopy assembly in an in-line position and an external position, a blower assembly disposed within a blower housing and in communication with the intake end in both the in-line and external positions and an exhaust duct adapter of the blower housing is configured to be in communication with the intake end in both the in-line and external positions.

Abstract: An oven appliance with features for dissipating pressure increases in the cooking chamber of the oven without forcing open the oven door is provided. Such features include a flame arrester that dissipates pressure increases and quenches flames from the cooking chamber of an oven appliance.

Abstract: Provided is a suction pipe including a suction port that has an opening shape which is long in one direction parallel with a longitudinal-direction part of an object structure long in one direction, and is arranged to face the longitudinal-direction part of the object structure to suction the air, an exhaust port that has an opening shape which is different shape from the opening shape of the suction port, and suctions out the air suctioned from the suction port, a flow path that connects the suction port and the exhaust port and has at least one bended portion which bends an air flow direction, and at least one flow control members that are disposed at flow path in one direction parallel with the suction port, and controls a flow of the air.

Abstract: An air filtration and exhaust system is described. The system comprises a microcontroller, a power supply, and a series of sensors that detect the presence of airborne contaminants such as ultra fine particles, smoke, natural gas and radon gas. In the presence of these airborne contaminants, the system is designed to inactivate and prevent operation of nearby food preparation appliances. Once these contaminants have been safely removed, the operation of these appliances is restored. In addition, the ventilation system may be equipped with a purification subassembly, which safely and efficiently removes such containments from the area. The system may also comprise an alarm that is activatable in the presence of these contaminants.

Abstract: Provided is a temperature control apparatus of a working machine that is inexpensive, energy-saving and capable of eliminating the temperature difference between a temperature in a room in which the working machine is installed and a temperature of a working area.

Abstract: A method of reducing silicosis caused by inhalation of silica-containing proppant, such as silica sand and resin-coated silica sand, and apparatus therefor. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Abstract: A system for cooling rack mounted equipment includes: a rack configured to house rack mounted equipment, the rack providing a front port bordered by a top and two sides; and a cold-air duct separable from and attached to the rack about the top and two sides, the duct being configured to be in fluid communication with a region adjacent to the duct to receive air from the region, the duct includes: a front member; side members coupled to the front member; and an end member configured to selectively allow the passage of air through the end component from the region into the duct; where the duct is attached to the rack to form a substantially airtight seal between the rack and the duct.

Abstract: A surgical drape plume evacuator includes a filter enclosure. An operating aperture disposed in the filter enclosure defines an area within the filter enclosure. A pressure source for creating at least one of a negative and positive air pressure in the filter enclosure. A fluid opening in the operating aperture connects the interior of the operating aperture to the interior of the filter enclosure.

Abstract: Provided is a semiconductor manufacturing apparatus including an atmospheric transfer device capable of suppressing corrosion of a part without having a corrosion resistant part and, also, capable of taking anti-corrosion measures in a cost effective way. The semiconductor manufacturing apparatus 100, installed in a clean room, includes an atmospheric transfer device 116; an atmospheric transfer chamber 108 for accommodating the atmospheric transfer device 116; a cover member 118 for separating a part of the atmospheric transfer device 116 from the atmospheric transfer chamber 108; and a gas exhaust unit 120 that adjusts a region 119 enclosed by the cover member 118 to have a lower pressure than that of the atmospheric transfer chamber 108. Here, the cover member 118 is made of a corrosion resistant material or an anti-corrosion treatment may be performed on the cover member.

Abstract: An extraction system is designed for metal working and other applications. The system may comprise a blower that delivers a positive pressure airflow to a hood that creates an air region for removal of airborne components from a work area. Return air is filtered in a filter region, and debris removed may be separated by a baffle in the filter region to limit re-uptake of the debris by the blower during operation of the system.

Abstract: A container for use in a system for spray coating a human subject includes a container body configured to hold a skin coating composition. The container further includes a first end portion having a male coupling valve, where the male coupling valve is configured to couple to a female fitting disposed in a spraying apparatus, where the male coupling valve is further configured to prevent flow of the skin composition from the container while the male coupling valve is not coupled to the female fitting. The container further includes a second end portion opposite the first end portion and having a vent, where the container is configured for inverted connection to the spraying apparatus such that when the male coupling valve is connected to the female fitting the male coupling valve is at a location below the vent, and where opening of the vent allows airflow into the container as the skin coating composition flows out of the container through the male coupling valve.

Abstract: An exhaust system includes: an exhaust pressure controller interposed in an exhaust passage and including: a pipe body including a side peripheral wall in which at least one port is formed; and a gas introduction wall for introducing an exhaust gas flowing from an upstream side of the pipe body so that the exhaust gas flows downstream without coming into direct contact with the port and vicinity thereof, one face of the gas introduction wall forming a pressure control path together with an inner face of the side peripheral wall while another face of the gas introduction wall forming an exhaust gas path along which the exhaust gas flows. The port communicates with the pressure control path, and the pressure control path communicates with the exhaust gas path at part downstream of the port.

Abstract: A paint mist collecting device for collecting a mist of paint particles produced when a paint is sprayed onto a workpiece within a paint booth includes a tubular duct having one end adapted to be connected to an outlet of the paint booth from which air containing the paint mist and a cleaning air are allowed to flow out, and a swirl-generating guide fin unit disposed inside the tubular duct and configured to force axial flows of the paint-mist-containing air and the cleaning liquid into a rotational movement to thereby generate a helical vortex as the paint-mist-containing air and the cleaning liquid flow downward along the tubular duct.

Abstract: A modular exhaust gas header designed for use with a process tool having a plurality of exhaust gas points of connection. Embodiments of the modular exhaust gas header include a plurality of branch ducts, at least one for each point of connection in the process tool. Branch ducts, and primary ducts with which they are fluidly connected, may be made from materials designed to withstand exhaust gases that have a high temperature, are corrosive, and/or include volatile solvents. If desired, flow control devices and pressure monitoring instrumentation that selectively measures pressure may be used in each branch duct. The header local to the processing system may be incorporated in a method of designing a layout for a manufacturing process tool and associated exhaust gas handling systems.

Abstract: A component extraction system is designed to remove smoke and airborne components, such as particulate, from a metal working or other application. The system may be compatible with a cart-type base unit or may be incorporated into a fixed or semi-fixed installation that uses a nozzle disposed on a carriage to remove workspace air (e.g., containing smoke and airborne components) away from the metal working application. The carriage may travel along a guide rail disposed adjacent to the metal working application in order to place the nozzle near the source of the metal working components. Further, the carriage may include a positioning system, utilizing sensors, to automatically adjust the location of the nozzle proximate the airborne component source.

Abstract: Disclosed is a vacuum pump exhaust pipe of a chemical vapor deposition apparatus, wherein two ports of the vacuum pump exhaust pipe are respectively connected to a vacuum pump outlet and a scrubber, and anti-sticking inner pipes are installed inside the exhaust pipe and closely contacted with inner walls of the exhaust pipe. The present invention also relates to a vacuum pump of the chemical vapor deposition apparatus. Blockage hardly occurs in the vacuum pump exhaust pipe of the chemical vapor deposition apparatus and the relevant vacuum pump according to the present invention to solve problems of the easily found blockage in the exhaust pipe, wasting the manpower and the time for clearing the exhaust pipe and the effect to the uptime of the chemical vapor deposition apparatus in the prior arts.

Abstract: A cleaning system for a cooking range exhaust having a range hood, a backsplash, and an exhaust flue for exhausting cooking effluent is disclosed. The cleaning system can include a fluid delivery system constructed for partial placement within the cooking range exhaust. The fluid delivery system can include a hood spray conduit constructed for placement within the hood and comprising spray openings for directing a degreasing composition to the backsplash. The fluid delivery system can also include a flue spray conduit constructed for placement within or outside the exhaust flue and comprising at least one spray opening for directing the degreasing composition to an interior surface of the flue. The cleaning system can include a pump system constructed for conveying the degreasing composition from a degreasing composition source and through the fluid delivery system. A method of cleaning a cooking range exhaust and a self-cleaning exhaust system are also disclosed.

Abstract: A personal welding enclosure has a rigid support frame and a tent-like enclosure defining an inner work chamber. The enclosure, which is supported by the rigid frame, is beneficially formed from impermeable, flame-proof and/or flame-resistant fabric having desired strength, durability and thermal insulation characteristics. A pneumatic automatic shut off control system monitors variables in and around the enclosure, alerts personnel to the existence of potentially unsafe conditions within the enclosure and automatically terminates welding and/or other hot-work when an unsafe condition is detected.

Abstract: A smoke capture adapter comprising: a first adapter part having a first generally ring-shaped portion with a first cylindrical inner surface for securely engaging a laser apparatus having a beam propagation axis, the first generally ring-shaped portion being oriented such that the beam propagation axis passes through a region bound the first generally ring-shaped portion and a tubular outlet extending from said first generally ring-shaped portion for communicating with a vacuum tube; a second adapter part rotatably connected to the first adapter part and arranged to rotate generally about the beam propagation axis having a second generally ring-shaped portion adjacent the first generally ring-shaped portion, the first and second generally ring-shaped portions defining a generally toroidal cavity and an inlet in fluid communication with the cavity; the tubular outlet and inlet in fluid communication through the cavity; whereby the position of the inlet relative to the first adapter part may be adjusted by rota

Abstract: An exhaust system is disclosed for use with a cold planer. The exhaust system may have an inlet manifold located downstream of a milling drum and above a material conveyor. The inlet manifold may be configured to receive dust and fumes generated by the milling drum. The exhaust system may also include at least one inlet passage located at a side of the material conveyor and gravitationally lower than the inlet manifold. The at least one inlet passage may be configured to receive dust and fumes generated by the milling drum. The exhaust system may further include a ventilator in fluid communication with the inlet manifold and the at least one inlet passage. The ventilator may be configured to draw the dust and fumes from the inlet manifold and the at least one inlet passage.

Abstract: Embodiments of the invention provide a ventilation system comprising a housing that includes a plurality of panels. At least one socket can be defined through at least one of the panels and the socket can be coupled to an electricity source. In some embodiments, the ventilation system can include at least one illumination system that can include a socket interface, an extension member, and at least one illumination device. The socket interface can be configured to engage the socket and the extension member can be capable of moving in a plurality of directions.

Abstract: A lotion application compartment (10) includes an apparatus for topical application of a fluid to a human or animal body. The apparatus includes a spray nozzle (20) and a support (80) for the body. The apparatus further comprises of one or more of the following: a structure for moving the support, so as to change the distance between the body and the spray nozzle (20); a structure for varying the spray pattern, spray pressure, spray frequency and/or spray duty cycle of the nozzle (20); a structure for varying the rotational speed of the support (80); and a structure for raising the body's skin temperature directly by radiation. A lotion application compartment (10) consisting of apparatus for topical application of a fluid to a human or animal body, the apparatus comprising a spray nozzle (20) and a support (80) for the body.

Abstract: In order to extend the functionalities of a range hood, the range hood is provided with an oxygen sensor measuring the oxygen content in the ambient air. Alternatively or additionally, the range hood can be provided with a climate control device that regulates the air climate and/or room climate around the range hood and by which information about the climate below as well as around the range hood can be obtained and used or supplied for further processing.

Abstract: A machining apparatus includes a machine and robot. The machine includes a top plate, a ventilation portion, an exhaust pipe, a fan, a pipe and a jig secured to the top plate. The jig is configured for securing a workpiece to be processed. The robot is configured for polishing and cutting the workpiece. The jig defines a cutout between a top surface of the jig and the top plate. The pipe communicates with the cutout. The ventilation portion communicates with the exhaust pipe and is located between the pipe and the exhaust pipe. The fan secured to the ventilation portion. The fan guides air flows into the pipe through the cutout and discharges the air out of the machine via the ventilation portion and the exhaust pipe.

Abstract: An exhaust system (2) is used for evacuating a chamber of a manufacturing apparatus (1) for manufacturing semiconductor devices, liquid crystal panels, LEDs, or solar cells. The exhaust system (2) includes a vacuum pump apparatus (3) for evacuating the chamber, an exhaust gas treatment apparatus (5) for treating an exhaust gas discharged from the chamber, and a controller (6) for controlling the vacuum pump apparatus (3) and/or the exhaust gas treatment apparatus (5). Information of operation process of the manufacturing apparatus (1), and the kind of gas and the flow rate of the gas supplied to the manufacturing apparatus (1) is inputted into the controller (6) to control the vacuum pump apparatus (3) and/or the exhaust gas treatment apparatus (5).

Abstract: An exhaust device for convection or combi ovens captures exhaust from opening side-opening oven doors with minimal energy waste.

Abstract: A system for ridding the working area of a nail salon work station of fumes and nail dust. The system is self-contained within the particular work station and has a vacuum system that draws air in from the area surrounding and proximate the working area to remove the fumes and dust. A fan draws that air into a chamber containing a bag-type, particulate filter that filters out the nail dust. Downstream of the bag-type filter is a fume filter that receives the air from the bag-type filter, having been pressurized by the fan, and provides a filter of the fumes. The air, now having passed through a particulate filter and a fume filter is exhausted into the room at a location remote from the working area. The bag-type filter is inexpensive and readily replaced.

Abstract: An air filtration and exhaust system is described. The system comprises a microcontroller, a power supply, and a series of sensors that detect the presence of airborne contaminants such as ultra fine particles, smoke, natural gas and radon gas. In the presence of these airborne contaminants, the system is designed to inactivate and prevent operation of nearby food preparation appliances. Once these contaminants have been safely removed, the operation of these appliances is restored. In addition, the ventilation system may be equipped with a purification subassembly, which safely and efficiently removes such containments from the area. The system may also comprise an alarm that is activatable in the presence of these contaminants.

Abstract: The present invention relates to a cage changing cabin (1) for replacing cages in which laboratory animals are housed, of the type comprising a supporting surface (21) supported by a lower box-like portion (20) and surmounted by a plenum or upper box-like portion (30), said lower box-like portion (20) and said upper plenum (30) comprising means for forced air circulation in laminar flow substantially tangent to the periphery of said supporting surface (21), characterized in that said lower box-like portion (20) and said upper plenum (30) are made of plastic material.

Abstract: A grossing station for use with performing autopsy, necropsy or pathology procedures comprises a table and an overhead hood connected to a top surface of the table. The grossing station further comprises a blower and ventilation system arranged in the table to move air across the table from a front to rear direction. The grossing station also comprises a trough arranged in an upper surface of the table, wherein the trough receives a plurality of interchangeable grid plates or sinks therein. The grossing station also comprises a first and second panel arranged at the side of the hood in order to create a fume hood for use by the user of the grossing station.

Abstract: A cleaning system for a cooking range exhaust having a hood, a backsplash, and a flue for exhausting cooking effluent is disclosed. The cleaning system includes a fluid delivery system constructed for placement within the cooking range exhaust. The fluid delivery system includes a hood spray conduit constructed for placement within the hood and comprising spray openings for directing a degreasing composition to the backsplash. The fluid delivery system includes a flue spray conduit constructed for placement within the flue and comprising spray openings for directing the degreasing composition to an interior surface of the flue. The cleaning system includes a pump system constructed for conveying the degreasing composition from a degreasing composition source and through the fluid delivery system. The cleaning system includes a collection reservoir constructed to collect degreasing composition runoff from the cooking range exhaust.

Abstract: An exhaust device having deflection plates comprises a cabinet that is provided with a space therein. An opening is formed in front of the cabinet. The air-extraction hood located at the top of the cabinet is provided at the bottom thereof with an elongate air-extraction slot facing downwards and parallel to the rear plate. A left deflection plate is vertically located in the space in a manner of being relatively oblique to the left lateral plate while a right deflection plate is vertically located in the space in a manner of being relatively oblique to the right lateral plate. Thereby, the air drawn towards the elongate air-extraction slot can flow into the cabinet via the left and the right deflection plates so as to prevent the leakage of pollutants from the opening in front of the cabinet.

Abstract: Embodiments of the present invention are directed to a customizable bio-manufacturing system which includes a manufacturing space having a first air handling system for providing supply air and a second air handling system for handling exhaust air, the supply air system being optionally provided with at least one of filtration, heating, cooling and or humidity control and a plurality of portable modules provided within the manufacturing space. At least one module having an interior capable of being interconnected with another module interior and each module's interior includes one or more components to perform at least one specific task of a biological, chemical, and/or pharmaceutical manufacturing process. At least one module includes an on-board environmental control system for controlling an environment within the module and a connection means for interconnecting the module interior with another module interior.

Abstract: An extractor hood is used for extracting and/or purifying a carrier that is contaminated with solid and/or liquid substances. In order to improve the extraction and/or purification output of an extractor hood and simultaneously to reduce the amount of maintenance required, the extractor hood uses a pre-filtering unit disposed upstream of the filter unit, whereby at least already a partial flow of the carrier to be extracted and/or to be purified is purified to a certain degree already before it reaches the filter unit that is configured as the main filter.

Abstract: The invention relates to a laboratory fume cupboard (100) comprising, connected in a moveable manner with a laboratory housing (60), a sash (30) for opening and closing a fume cupboard interior, in which between the sash (30) and a side post (10) of the laboratory housing (60) an air opening (70) is provided which is designed for producing wall flows in the interior of the fume cupboard.

Abstract: A portable work station including a main housing, a fan and motor housing, transition housing and an exhaust housing with the housings being selectively removably secured together rather than being welded as in the prior art. The work station includes a ballast compartment in the main housing into which ballast material may be placed to stabilize the work station. The work station includes supports for the framework of a drape assembly with the supports being selectively removably secured to the main housing.

Abstract: A manicure table having a technician side, an opposing client side and a table top work surface, together with an exhaust motor vacuum, a hose or pipe conduit running upwardly along the table from the vacuum toward the work surface and a controllable source of illumination at an end of the conduit adjacent to the work surface for exhausting harmful dust and noxious chemical odors generated at the work station area without shadowing the nails or nail tips being worked upon from ceiling lighting overlying the hose or pipe conduits providing the exhaust function.

Abstract: A hood device for grill comprises a hood, a telescoping tubing, a filter assembly, a grease cup, and an external fan. The hood partially covers a grill at a first elevated vertical position and collects smokes from the grill. The telescoping tubing extends from the hood and is configured for ventilating, and telescoping between the first and second positions. The filter assembly is disposed at a lower end of the telescoping tubing, and comprises filter with concentric and cylindrical layers. The grease cup is for collecting grease from the filter. The fan is for building up an ascending air current inside the telescoping tubing. A velocity of the ascending air current is determined according to the first elevated vertical position, a ratio of a diameter of the hood to a diameter of the grill, and a surface temperature of the grill.

Abstract: A high frequency heating apparatus with a range hood, which has an opening for exhausting air and a cover for closing the opening, includes a microcomputer control unit for controlling an automatic opening/closing operation of the cover, a control panel for setting an operation of the apparatus, a display unit for displaying the control status, and a detecting unit for detecting an exhaust direction of a blower. The exhaust direction of the blower can alternate between indoor circulation and outdoor ventilation and the control unit opens the cover only when the detected exhaust direction of the blower is the indoor circulation and the cooling unit is stopped, and the control unit closes the cover when the detected exhaust direction of the blower is the outdoor ventilation or the cooling unit operates.

Abstract: An autonomous ventilation system includes a variable-speed exhaust fan, a controller, an exhaust hood, and a spillage sensor. The exhaust fan removes air contaminants from an area. The controller is coupled to the exhaust fan and adjusts the speed of the exhaust fan. The exhaust hood is coupled to the exhaust fan and directs air contaminants to the exhaust fan. The spillage sensor is coupled to the controller, detects changes in an environmental parameter in a spillage zone adjacent to the exhaust hood, and communicates information relating to detected changes in the environmental parameter to the controller. The controller adjusts the speed of the exhaust fan in response to information relating to detected changes in the environmental parameter.

Abstract: A conveyor oven includes a housing surrounding an oven chamber having an inlet and an outlet. A conveyor belt moves food product through the oven chamber from the inlet to the outlet. A heated air handling device removes heated air from areas proximal to the inlet and the outlet.

Abstract: A fume hood is described for use in removing material from, or inserting material into, the opening of a container. The fume hood enclosure has a floor with an opening for insertion of the upper end of the container into the enclosure. The floor includes a circumferential groove around the opening, preferably in a raised shoulder. An annular flexible membrane having an inner diameter smaller than the diameter of the opening is placed in axial alignment over the opening and the groove. A vacuum is drawn on the groove through a vacuum port to pull the section of the membrane above the groove into the groove, holding the membrane securely in place during use. If desired, a retainer can be placed in the groove above the membrane to prevent movement of the membrane in the event of a loss of vacuum.

Abstract: A kitchen hood assembly includes a combination hood cleaning and fire suppression system. The hood assembly includes a hood structure and a riser connected thereto. An exhaust blower forces an exhaust stream of air into the hood and through the riser. A combination hood cleaning and fire suppression system is incorporated into the hood structure. The combination hood cleaning and fire suppression system includes an elongated spray bar that is connected to a water source and includes a surfactant injector that injects a surfactant into the water being directed to the spray bar. In one mode of operation, the spray bar is effective to clean the hood assembly. In another mode of operation, when a fire is sensed in or in the vicinity of the hood, the same spray bar is utilized to inject an aqueous liquid into the hood to suppress the fire.