Abstract: The energy required to provide hot water may be reduced in a water heating system including a heat generating range (12) for cooking food and a hood (14) overlying the range (12) for capturing fumes rising from the range (12) or the food thereon. An exhaust duct (16) provided with an exhaust fan (18) is connected to the hood (14) and a baffle and heat exchanger assembly (22) is interposed between the hood (14) and the exhaust duct (16). The assembly (22) includes a grease collecting baffle (54) facing the hood (14) and a heat exchanger (52) backing the baffle (54). The heat exchanger (52) includes a liquid flow path (56), (60), (74) through which water to be heated by the fumes may circulate.

Abstract: An apparatus for collecting grease from a kitchen ventilator, which is mounted on the roof of a structure housing a restaurant. The apparatus fits around the exhaust fan of a kitchen ventilator and includes at least one layer of filtering medium which fits snugly about the exhaust fan, a rectangular frame for securing the layer of filtering medium about the exhaust fan, and a plurality of retaining bars for securing the layer of filter medium in the rectangular frame. The rectangular frame is comprised of four frame sections joined at each end with 90.degree. elbows. Each frame section comprises three tubes with supports fitted between the tubes. The 90.degree. elbows fit over and join the tubes of one frame section with the tubes of another frame section. The retaining bars are positioned between two tubes of opposing frame sections, above the layer of filtering medium.

Abstract: Along the path of the cooking fumes of an exhaust hood where the fumes move with swirling motion, forwardly adjustable blades are disposed between a retracted and an extended position to accentuate or decrease the intensity of the swirling path end of the centrifugal force applied to the particles to be removed, depending on the volume and the flow rate of the cooking fumes which ascend through the hood. This blade arrangement also ensures a constant static pressure inside the hood for a maximum efficiency of extraction.

Abstract: A grease guiding tray for a kitchen ventilator includes a tray unit and an annular fence member. The tray unit includes an annular plate with inner and outer peripheral edges, an inner ring which projects upwardly from the inner peripheral edge and which has a top end formed with an annular flange that extends radially inward and then upward, an outer ring which projects upwardly from the outer peripheral edge and which cooperates with the inner ring so as to confine an annular recess therebetween, and an annular partition which projects upwardly from the annular plate and which extends into the annular recess between the inner and outer rings. The partition is formed with at least one notch, while the outer ring is formed with a radial opening. The fence member includes an annular surrounding wall that diverges gradually from a bottom end thereof, and an annular base plate that is connected to and that inclines upwardly from the bottom end of the surrounding wall.

Abstract: The energy required to provide hot water may be reduced in a water heating system including a heat generating range (12) for cooking food and a hood (14) overlying the range (12) for capturing fumes rising from the range (12) or the food thereon. An exhaust duct (16) provided with an exhaust fan (18) is connected to the hood (14) and a baffle and heat exchanger assembly (22) is interposed between the hood (14) and the exhaust duct (16). The assembly (22) includes a grease collecting baffle (54) facing the hood (14) and a heat exchanger (52) backing the baffle (54). The heat exchanger (52) includes a liquid flow path (56), (60), (74) through which water to be heated by the fumes may circulate.

Abstract: An exhaust hood is disclosed which comprises an open underside and a grease filter defining an exhaust plenum between the hood and the grease filter and a flow path through the grease filter. A shutter-like panel is slidable into the flow path adjacent to the grease filter for blocking a portion of the flow path to adjust a volume of air flowing through the exhaust hood. Multiple side-by-side panels may be provided and each panel preferably tapers in height across its width.

Abstract: A fume exhausting device comprises a housing in which an air flow guiding box and a transverse impeller are disposed. The air flow guiding box is formed by a front plate, a top plate, a rear plate, a left plate and a right plate. The top plate is provided with an opening. The transverse impeller is located horizontally in the air flow guiding box such that the impeller is pivoted respectively at the left end thereof and the right end thereof to the left plate and the right plate of the air flow guiding box, and that the impeller is driven by the motor. A bottom plate is fastened to the housing such that the opening of the front plate of the air flow guiding box is sealed off by the bottom plate which is provided with a plurality of ventilation holes.

Abstract: A grease filter assembly is provided for absorbing airborne grease discharged from a grease discharge vent extending from a roof. A support frame is mountable to the duct of the grease discharge vent and grease absorbing pads are supportable upon the support frame in stationary position surrounding the discharge vent and in spaced relation from the roof. The support frame includes support rods mounted adjacent respective sides of the discharge vent duct and extending beyond their respective duct sides to overlap at the corners of the duct and thereby provide a supporting grid including the end portions of each of two rods extending from adjacent walls of the duct. A plurality of grease absorbing pads are supported on the supporting grid disposed adjacent respective sides of the duct. The pads being of sufficient length to extend beyond the duct sides on both ends so that pads disposed at adjacent sides of the duct overlap one another at the corners of the duct.

Abstract: A smoke exhauster includes a housing having an opening for receiving an annular tray and a grill. The grill includes a passage having one end located below a drain hole of the annular tray for receiving the fluid and having the other end extended toward the center portion. A container is secured to the center portion of the grill for collecting fluid from the passage, the container including a tube disposed in the center portion for supplying water into the housing for cleaning the housing. The grill and the tray both may be easily secured to the housing.

Abstract: An apparatus for filtering grease laden fumes in the space above a cooking appliance, including a hood, a supply air plenum and an exhaust air plenum on each side of the hood, a source of air under pressure being connected to a supply air transition duct connected by an air supply transition duct coupled to an opening in the air supply plenum, the supply air plenum being provided with perforated balancing plates which perform the function of modulating the incoming air to flow in a particular manner, and further being provided with perforated deflector pairs of overlapped plates positioned below the balancing plates, to additionally modulate the air flow paths, so that straight paths of air flow move into the interior of the hood above the cooking appliances and then pass through filters which remove grease particles as the exhaust air moves through the filters into the exhaust air plenum.

Abstract: A combined self-cleaning grease and particulate filter and heat exchanger used to collect thermal energy normally vented through flue hoods or other ventilation systems in commercial or institutional kitchens. Fluid circulated within the filter/heat exchanger may then be utilized for heating other mediums, such as water or air. The filter/heat exchanger is provided with means for quick assembly and designed to replace existing grease filters, thus allowing economical retrofitting.

Abstract: Organic vapors emitted from a fryer containing a fatty substance heated to its vaporization temperature are condensed from a stream of exhaust air by a venturi-type scrubber. The scrubber condenses organic vapors into a liquid bath from which floatable by-products are removed and subjected to a further separation or clarification process. Air containing organic vapors is initially collected by a hood structure which defines a substantially confined emissions region above the fatty substance. In a preferred embodiment, the hood structure is configured to restrict the flow of ambient air into the emissions region, preferably causing air to enter the emissions region at a velocity of at least approximately 100 feet per minute.

Abstract: A smoke exhauster is provided under a bottom plate thereof with two first locating members, two second locating members, and a lower plate. The lower plate is located by two first locating members and two second locating members such that the front side, the left side and the right side of the lower plate form a smoke-drawing space along with the bottom side of the bottom plate. The size of the smoke-drawing space is such that the fume can be effectively exhausted by the smoke exhauster.

Abstract: A hood is assembled of modules including a central make-up air plenum module directly over the heating stations of a conveyorized double-deck oven, an exhaust plenum module atop the makeup air plenum and downwardly-opening end modules overhang the conveyor end portions extending outside the sides of the oven heating chambers. The end modules have make-up air directors aiming make-up air upward along the undersides of removable panels having slots therein to accelerate exhaust flow into a chamber below filters to effectively remove fumes from the areas above the conveyor ends. The overhanging end modules also have partitions therein cooperating with the walls of the overhang portions to provide ducts at the front of the overhang portions to capture fumes from the area above the front of the conveyor ends. Air flow guides around the extending portions of the conveyors assist.

Abstract: An improved smoke detector in combination with a fan assembly for reducing the likelihood of smoke detector activation by ambient smoke, has a fan with a timer controlling the fan's motor to automatically shut off the fan either when the time has expired or if the timer fails.

Abstract: A external body of a kitchen fume extractor comprising a top sheet member having left and right edges extending downwardly to form a short plate portion extending inwardly to form a first fixing portion, two side sheet members individually having a second fixing portion extending inwardly from the upper edge of the side sheet member and secured to the first fixing portion, and a rear sheet member attached to the top sheet member and the side sheet members.

Abstract: A wind guiding disk of a kitchen smoke exhauster comprises a first element and a second element. The first and the second elements are made of heat-resisting material by injection molding. The first element has a first bottom flat collar provided with a first inner upright collar and a first outer upright collar which is provided with an opening and a wind guiding tube portion for being fastened to a bottom plate of the kitchen smoke exhauster. The second element has a second bottom flat collar provided with a second inner upright collar and a second outer upright collar. The second element is fitted into the second element such that the bottom of the second bottom flat collar is located on the top of the stopping collar of the first element, and that a passage is formed between the first inner upright collar and the second inner upright collar.

Abstract: An outer housing of a kitchen smoke exhauster comprises a left-right side plate, a top plate and a plurality of U-shaped members. The left-right side plate has a main plate portion provided with a horizontal plate portion extending inwardly from the top edge thereof and having a first vertical strip portion extending downwards from the fringe thereof. The top plate has a base plate portion provided respectively at the left side thereof and the right side thereof with a second vertical strip portion extending downwards. Each of the U-shaped members has a middle plate portion provided respectively at the left side thereof and the right side thereof with a first wall plate portion and a second wall plate portion, which extend upwards such that they are curved and that they are corresponding to each other. The U-shaped members are so disposed that the first and the second vertical strip portions are received in the slots of the U-shaped members with an appropriate tightness.

Abstract: This invention is directed to smoke exhauster having two side members and a top plate. The side member includes a main portion having a plurality of horizontal rods disposed on an internal wall and a top portion. Both left and right edges of the top plate are bent downwardly to form a vertical plate portion having a plurality of through holes corresponding in location and number to the horizontal rods. A plurality of bolts pass through the through holes and are threaded to the horizontal rods.

Abstract: A novel dual mode, downdraft gas range provides a sealed top and sealed gas burners that can be operated effectively in a power burner mode with a downdraft exhaust and otherwise in an atmospheric mode. In the range, a separate and independently operating air/gas supply chamber for each sealed burner is supplied with a controllable flow of gas, and, in the power burner mode, with a controlled forced flow of primary combustion air from a combustion air blower and pressure-adjustable air plenum that supply all air/gas chambers, and each air/gas supply chamber is provided with a gated opening, which is operated to provide an unobstructed flow of primary combustion air from atmosphere in non-power burner operation. The mixture of air and primary combustion air flows from the air/gas supply chamber through a sealed conduit formed to be free of obstructions and abrupt changes in direction with a flow diffuser provided adjacent the gas burner.

Abstract: A ventilation apparatus, which is installed in the ceiling of a room, particularly a kitchen, laundry or the like. The ventilation apparatus (1) comprises a wall element (3) directed downwardly from the ceiling, which wall element is formed of a number of elongated parts (4) provided with vertical chambers (5). The shells (6) of the parts (4) are provided with inlet apertures (7), through which apertures and chambers the exhaust air is conducted out of the room.

Abstract: The invention relates to a ventilator assembly and method for removing kitchen exhaust fumes entrained in a moving air stream from an area surrounding a cooking unit. A roof-top blower moves the air stream from the cooking area through an air duct to the atmosphere. An overhanging hood defines a ventilation opening located above the cooking unit. One or more air vents are formed in a top wall of the hood and communicate with the air duct. A detachable high velocity module is positioned in the hood in filtering relation to the air vents. The high velocity module includes opposing side plates, a filter housing connected to the side plates, and an inclined exhaust baffle located between the filter housing and the cooking unit. The exhaust baffle defines at least one laterally extending slot formed therein for accelerating the flow of the moving air stream into the high velocity module. One or more grease filters are mounted in the filter housing for removing fumes from the moving air stream.

Abstract: False-ceiling construction (10), which is intended in particular for institutional kitchens and which false-ceiling construction is composed of modular units, which comprise at leat an intake air unit (11) and an exhaust air unit (18) and, in the area between them, a false-ceiling plate (25), and which false-ceiling construction is formed underneath the ceiling construction (C) proper in a room. The false-ceiling construction (10) includes at least one flow opening (15), passing from the intake air chamber (13) in the intake air unit (11), for a trap-air jet (L.sub.1a) for making the trap-air jet (L.sub.1a) to flow as parallel to the plane (T) of the false-ceiling plate (25) or as slightly inclined in relation to said plane towards the exhaust air opening (20), placed on the exhaust air chamber (19), for the exhaust air flow (L.sub.2). The invention further concerns a method for the flow of air in connection with the false-ceiling construction.

Abstract: An external body of a soot extractor for effectively devoid of the previously mentioned sharp edges which are capable of inflicting injury on persons. The body includes a top sheet member having left and right edges bending downwardly to form a first fixing means respectively, and two side sheet members respectively attached to the left and right sides of the top sheet member and individually having a main plate portion and a arcuate plate portion, and a second fixing means extending downwardly from the edge of said arcuate plate portion for secured on the first fixing means.

Abstract: An apparatus and method for use with a smoke detector that is located in proximity with a stove or similar smoke-emanating article. The smoke detector is enabled by placing the detector near the stove (or similar article) and/or applying a source of power to the smoke detector. The smoke detector is coupled to a device that operates to alleviate the accumulation of smoke that might emanate from the stove. Such a device might take the form of a stove hood or, specifically, a fan incorporated or associated with the stove hood. The smoke detector is mechanically and/or electrically coupled to the hood so that when the hood or fan is operating, the smoke detector is disabled and no alarm is communicated. The alarm may be automatically interrupted when the hood and/or fan are mutually deployed in an active (ON) mode.

Abstract: An conveyor oven enclosure system is disclosed which includes a hood means which extends over the conveyor oven and supplies make-up air and exhausts heated air. The enclosure system includes front enclosure and rear enclosure walls which are parallel to and spaced apart from the front and rear oven walls of the oven respectively. Additionally, a first enclosure end wall is also included which is parallel to and spaced apart from the first oven end wall. A second enclosure end wall which is parallel to and spaced apart from the second oven end wall is also included. In the enclosure system of the present invention there is an entry opening in at least one of the enclosure walls which is adapted to correspond to each entry opening in the oven walls. An exit opening in at least one of the enclosure walls is provided which is adapted to correspond to each exit opening in the oven walls.

Abstract: An adjustable deflector device is provided for selective positioning above the ventilator of a cooking range of the type where the ventilator is disposed adjacent to and flush with the cooking range heating elements. The deflector device comprises support means having first and second ends, the first end includes a first support portion and the second end includes a second support portion. The first and second portions are disposed at an angle with respect to each other. The first end is movably attached to the cooking range so that the first support portion is positioned at an angle with respect to the range. The first support portion is rotatable and extendable about its longitudinal axis. The second support portion includes a deflector portion having a width at least equal to the exhaust means and a length substantially equal to the exhaust means.

Abstract: A sliding valve unit is adapted to be mounted on the exit panel of a range hood in front of an exit duct. The valve unit is made of a pair of flat plates facing each other. The pair of plates have a perforation therethrough and a sliding slice therebetween for obstructing the perforation. A handle connected to the slice extends between the plates and outwardly for manually moving the slice. The valve unit is provided with means for being fixed flatwise against said duct.

Abstract: Method and apparatus for controlling grease build-up in cooking vent ducts that includes installing a heat resistant close fitting custom built duct liner and periodically removing, cleaning, and replacing same.

Abstract: A fume extraction device for a cook top on a frame which has at least two cooking elements is disclosed. The device is in the form of a drawer which can be raised and lowered in the frame between the cooking elements. There are two openings in the drawer facing the respective cooking elements and filters in the openings. An adjustable baffle is provided for controlling the flow through the openings and there is a further inclined filter in the drawer below the baffle. The drawer can be raised to selected positions depending on the height of fumes being generated during cooking.

Abstract: A kitchen smoke exhauster comprises a housing, an air flow chamber, two motors, a bottom member, a partition, and a bottom board. The bottom member is provided with the grease exit pipe, the grease guide portion and the bevel groove to facilitate the collection of grease contained in the cooking fume. The bottom member is further furnished with left and right baffling portions preventing the contamination of food by the grease. The air flow chamber is provided with the arcuate right and left flow guides serving to enhance the smoke-removing efficiency of the kitchen smoke exhauster. Both air flow chamber and bottom member can be easily removed from the exhauster for cleaning.

Abstract: A grease tray for range hoods comprises a main member and an auxiliary member. The main member has a disk ring provided mainly with a first upright ring portion and a shoulder portion having thereon a second upright ring portion with a tenon located on the inner circumference thereof. The disk ring is further provided with a grease outlet. The auxiliary member has a planar ring provided with an inner wall, an outer wall, and a high wall portion located between the inner wall and the outer wall so as to form an outer slot and a middle slot. The outer slot has a grease draining hole while the middle slot has at least one through hole. The outer wall of the auxiliary member is provided with a mortise corresponding in location to the tenon of the main member. The main member and the auxiliary member are put together by means of the tenon and the mortise, in a manner that the bottom of the outer wall is located on the shoulder portion.

Abstract: The invention concerns a ventilation device, through which impure air is removed out of a room, in particular out of the proximity of a source of impurities at a working point in the room space. According to the invention, through the device, besides the removal of impure air and/or excess heat from the source of impurities as a limited-area removal, air of general removal is also removed through the device, the suction opening for general removal being preferably opened into the same exhaust chamber into which the suction opening for the space for collecting of impurities in the interior of, for example, a kitchen hood is opened. The device may also include a flow opening for the general intake. Thus, the device can operate as a device for limited-area ventilation and for general ventilation serving for the whole room.

Abstract: The invention of this application comprises a novel filter assembly including a charcoal filter and a fiberglass filter positioned within a housing. The fiberglass filter comprises a fiberglass mat mounted to a wire structure formed in an accordion-shape so as to increase the surface area of the fiberglass mat. The invention also comprises a novel sensor system for sensing when the grease filter and the filter assembly have been installed, for sensing when the filter assembly is about to require changing and for shutting down the exhaust hood when the assembly requires changing.

Abstract: A dual mode downdraft gas range provides a number of substantial advantages, including operation in a powered burner mode and an atmospheric mode. In the powered burner mode, a plurality of powered open flame surface burners can provide even heat from each of the burners as a result of burner flames that provide substantially complete combustion close to the burner outlets in short, stable flames that are unaffected by an adjacent downdraft exhaust or other outside influences. In the atmospheric mode, the gas burners can operate without a downdraft exhaust. The gas range can meet agency requirements in both the powered mode and atmospheric mode of operation and can be inherently fail-safe in the event of a power failure in the downdraft exhaust system. The gas range can be economically and easily manufactured and assembled, with burner controls arranged for convenient operation at one side of the range box for the plurality of burners.

Abstract: A kitchen ventilator is mounted in the wall behind the cooking units and has a horizontally extending intake slot located close to the cooking surface. A roof-mounted upblast fan is coupled through connecting duct to the ventilator to establish a vacuum in the system. Room air travels over the cooking surface into the slot and is baffled down toward the bottom of the ventilator and then turned 180 degrees around the bottom edge of the baffle to centrifugally remove some contaminants. The air moves upward to the top of the baffle and is drawn through baffle-style filters where additional contaminants are removed. The baffle is removable to facilitate cleaning. Clean-out doors in the front face of the ventilator above the intake slot give easy access to the filters for removal and cleaning or replacement of them. A funnel around and under the fan assembly takes rain and snow from the fan assembly and drains it through the connecting duct and ventilator to sewer.

Abstract: A grease filter and collection assembly for roof ventilators and the like includes a frame structure having a generally central aperture through which a grease discharge vent projects when the frame structure and trap assembly are installed surrounding the vent, and a replaceable grease-trapping material is removably secured in the frame structure so that the grease-trapping material is exposed within the aperture for trapping grease discharged from the vent. In a preferred embodiment, the frame structure is assembled from extruded frame members which integrally include a plurality of channels for securing and mounting the assembly for retaining the grease-trapping material within the frame structure. Upper and lower channels accommodate corner connections of the frame members. The frame members have side walls which peripherally enclose the grease-trapping material which is tucked between the upper and lower channel inwardly extending from the side wall.

Abstract: An air filter is provided for a food cooking apparatus to avoid the necessity for venting same within a building and permitting the use of a free standing independently movable structure capable of receiving a movable cooking apparatus or accommodating a fixed cooking apparatus such as a grill.An air filter assembly for filtering exhaust air from cooking devices is illustrated as having filter elements in vertically aligned stacked relation accessibly positioned in an imperforate housing.

Abstract: An exhaust ventilation control system for use with a ventilation system located at a cooking station and having one or more exhaust fans for exhausting air containing cooking by-products from the cooking station to an external environment, can alter operation of the exhaust fans to match the exhaust requirements to the cooking load. The exhaust ventilation control system includes an exhaust control connected to the exhaust fans for controlling operation of the exhaust fans in response to operation of the cooking areas. The exhaust control requires monitoring of a cooking area for determining which of the one or more cooking areas is in operation, a power control circuit responsive to the cooking are a monitor for controlling power supplied to the exhaust fan motors, and a timed switch operable in response to the power control circuit to switch to a variety of positions, depending on the number of cooking areas in operation.

Abstract: A nozzle extends through an opening in the side wall of the vessel of a pressure fryer and normally is disposed in an inactive position in which discharge ports in the nozzle are sealed with respect to and are protected from the contents of the vessel. If a fire occurs, pressurized fire suppressant first extends the nozzle into the interior of the vessel to render ineffective the seal at the discharge ports. The suppressant then sprays through the discharge ports of the extended nozzle to extinguish the fire in the vessel.

Abstract: Apparatus for cooking or refrigerating food which is capable of treating several products having different cooking or refrigerating times, wherein baskets containing these products can be separately introduced or removed. The apparatus includes a lower part in which the products are to be treated, and a hood covering the lower part. To allow introduction or removal of baskets, the hood may be raised and lowered by a mechanism. Robot arm secured below the hood slide on transverse endless screws and grasp baskets whose treatment is complete, while permitting other baskets to remain for treatment.

Abstract: This disclosure is concerned with a removable hood for use over the grill or broiler section of a counter top stove such as a Jen-Air.TM. stove having a suction exhaust inlet centered between the burners in the counter top.

Abstract: A circuit arrangement for the control of a ventilator, especially for a stream or vapor vent hood which is located above a cooking range, in dependence upon steam or vapor clouds which are drawn towards the ventilator. An ultrasonic transmission path having an ultrasonic transmitter and an ultrasonic receiver is located in front of the ventilator, with a receiving circuit demodulating the signal which appears at the ultrasonic receiver; wherein an evaluating or sample-and-hold circuit evaluates any fluctuations in the input signal encountered over a period of time and which are based on the presence of steam or vapor clouds in the ultrasonic transmitting path, and counts these signals within a time frame, and wherein a comparator circuit compares the result of the count with preset values and, in accordance therewith, activates the ventilator.

Abstract: A hood adapted to remove contaminants from incoming airflow comprising a housing member having top, front, back and side walls, and defining a lower liquid sump, and an upper exhaust opening in the top wall, an inlet opening defined in the front wall of the housing member the front wall is inclined inwardly and downwardly, a partition extends between the side walls downwardly from the front wall and has a free end defining an air passage with the back wall leading to a large volume upper portion of the housing, a screen having openings therein extends between the side walls and downwardly from the free end of the partition into the sump, the partition has a dam on the free end thereof having a horizontal upper edge, liquid will overflow the dam on the partition and move across the openings in the screen to the sump, whereby air passing into the inlet opening passes through the liquid moving across the screen and then through the liquid moving across the screen and then through an agglomeration of liquid in th

Abstract: It has been found that an air filter may be provided for a food cooking apparatus to avoid the necessity for venting same within a building and permitting the use of a free standing independently movable structure capable of receiving a movable cooking apparatus or accommodating a fixed cooking apparatus such as a grill.

Abstract: A ventilator for a cooking unit located in a counter has a housing suitable for mounting beneath the counter. A vent member moves in a generally vertical direction with respect to the housing between a retracted position in which said vent member is flush with the counter and an extended position in which the vent extends above the counter adjacent to the cooking unit. The vent member is in fluid communication with said housing. A blower is coupled to said housing for drawing cooking effluents produced at the cooking unit into said vent member, downwardly through said vent member into said housing, and discharging same from said ventilator. A motor is mounted on the housing for moving a roller in an arcuate path. The roller engages a follower surface mounted on the vent such that travel of the roller along the follower surface drives the vent to the extended position.

Abstract: In an exhaust hood (5) for cooking places or other kinds of sources of dust or fumes, on the front edge of hood (27) blast nozzle arrangement (26) is provided, which directs blast air (22) in the form of a wall jet approximately horizontally over the underside of hood (28) against filter (17) placed in the rear area of the hood, so that the wall jet draws the flow of fumes and carries it along. In a special embodiment of the exhaust hood, on the underside of the front wall of the hood, a downward directed swirl nozzle (38) is provided, which produces vortex flow (37) which empties into the blast air flow.

Abstract: A cooking apparatus utilizes a bi-level exhaust venting system for an eye level range for conducting heated air from both a front portion and a rear portion of a subjacent stove unit. A first inlet is provided at a top portion of the cabinet, and a second inlet is provided at a bottom portion of the cabinet for conducting air from the front and rear surface units, respectively. A blower draws the conducted air into the upper cabinet and discharges it through a suitable outlet.

Abstract: An oil-removal structure for range hoods which is characterized by a water container integrally formed with an air-guiding case, into which at least one electrothermal element may be positioned to heat water contained therein so that an oil meltable temperature may be reached. At this point, oily residual on the air-guiding case and exhaust fans of range hoods may be melted and can flow into an oil collector, and the range hoods can be cleaned without the effort required to dismount and disassemble them.

Abstract: A vertical type smokeless exhauster which comprises a vertical body with a guide plate holder on the top and a guide plate to trigger a micro switch by sliding a guide plate to its outermost position in order to start fan motors which suck oily smoke into a ventilation opening in the body. The oily smoke is then filtered by an oil filter element in a filter tank before it is discharged to the atmosphere. Oily contents at the fan motor and filter tank are collected by oil collectors and an oil pan, respectively.