Abstract: A proximity ventilated cooking system for interior use is provided with means for providing effective exhaustive ventilation to maintain in a variety of installations an air flow velocity adjacent the burners and throughout the exhaust system that has sufficient velocity to capture and carry to atmosphere substantially all of the cooking gasses, vapors and fumes produced in cooking, but insufficient velocity adjacent the burners to produce undesirable cooking and burner heat distribution, and where gas burners are used, interference with desirable flame patterns.

Abstract: A roof mountable kitchen grease exhaust blower is constructed with hinged housing elements which can be raised for easy service access to all parts of the unit. A container collects grease draining from a discharge scoop and has a flotation separator for harmlessly eliminating water while retaining grease. Grease containment edges on the discharge scoop contain and collect grease being carried by the exhaust air stream along inner scoop surfaces. The discharge scoop has a curved bottom wall to encourage gravity flow of grease collecting on the scoop surfaces towards a drain opening.

Abstract: A circulative catering table provided with an endless conveyer circulating according to the circulating course supported in a horizontal plane at the designated height by a base frame and supporting the foods at the designated intervals, an appropriate number of counters for eating and drinking disposed outside of the endless conveyer and a cooling system for the foods on the endless conveyer. The circulative catering table has a first cool air path forming a lower opening by providing a gap between the outside of the endless conveyer and the counter and extending downwards of the base frame in communication with the lower opening and a second cool air path disposed in opposition to the lower opening against the endless conveyor, with the lower part thereof in communication with the first cool air path and with the upper opening at the upper end that uniformly blows out the cool air in a direction crossing the endless conveyer and toward the space above the lower opening.

Abstract: A roof mountable kitchen grease exhaust blower is constructed with hinged housing elements which can be raised for easy service access to all parts of the unit. Redundant blower drive motors are provided either of which can be easily engaged to the blower wheel in the event of failure of the other. A blower wheel drive belt is equally engageable to either drive motor and changeover from one to the other is easily and quickly made by minimally skilled personnel. The newly engaged drive motor is enabled by a power select switch at the blower control panel.

Abstract: A commercial or institutional oven with two separate oven compartments, individually controllable as to temperature. The oven compartments are ported and fan-vented for providing even distribution of heat, smoke and steam, as applicable, while minimizing the expulsion of such cooking elements from the oven compartments. The porting and exhast system are shared by the two oven compartments in avoiding duplication of components. The exhaust system induces ventilation of the oven compartments through utilization of the venturi effect rather than through direct suction by way of a direct mechanical connection between the fan and each oven compartment's exhaust port. The design of the exhaust system permits use of a general purpose fan, as opposed to one designed for high temperature use.

Abstract: An improved driving mechanism for a motor driven retractable down draft vent system of the type having a vent inlet member slidably mounted for vertical movement between a lowered position and a raised position. A first drive member is fixedly connected to a drive motor which drives the first drive member between a first position and a second position corresponding to the lowered and raised positions of the vent member, respectively. A second drive member supported from the movable vent inlet member is disposed in the path of the first drive member. The first drive member abuttingly drivingly engages the second drive member in moving from its first to its second position to positively drive the vent inlet member from its lowered to its raised position. The second drive member is simply driven by the weight of the vent inlet member to follow the first drive member when it returns from its second to its first position to releasably carry the vent inlet member to its lowered position.

Abstract: A gas burner assembly including a main burner, a catalyzer and an after burner has a fire guide formed on a boundary between porous flame plates.

Abstract: A ventless hood for a commercial deep fat frying pressure cooker having a pot in which cooking is performed by the use of a heated cooking oil bath and steam under pressure derived from the moisture in the food being cooked. The hood comprises a vertical portion at the rear of the cooker and a forwardly extending open-bottom portion spaced from and overlying the pot. The forwardly extending portion of the hood supports a pair of angularly related baffle filters surmounted by a metallic mesh filter and a charcoal filter. A fan in the vertical portion of the hood draws ambient air and cooking gasses through these filters. A water tank is mounted behind the cooker together with a pump to recirculate the water in the tank through a heat exchanging radiator located between the filters and the fan to cool the water. During the cooking cycle excess steam and vaporized cooking oil are introduced into the water bath which acts as a scrubber and condenses the majority of the steam and vaporized cooking oil.

Abstract: An improved retractable venting arrangement applicable to cooktops and ranges which have surface heating units supported from a supporting surface such as a countertop. A retractable vent member vertically moves through an opening in the support surface proximate the heating units between a lowered position beneath the support surface and a raised position extending above the surface. A pivotally mounted cover member covers the opening. The cover is opened and closed by the vent member which engages and moves the cover member to its open position as the vent member moves to its raised position. The cover member is held in its open position by the vent member, and returns to its closed position as the vent member returns to its lowered position.

Abstract: An access door (10) for cleaning grease from duct runs (26) in exhaust systems for kitchen cooking equipment (16). The access door (10) includes a collar (32) which is mounted at a selected location in a run of duct to provide an opening (46) for accessing the interior surfaces (30) of the duct. A fireproof cover (54) is releasably secured to the collar (32) by securing devices for selectively closing the collar opening. A seal (70) is interposed between the collar the cover, proximate the juxtaposed portions to prevent fire from escaping the duct through the collar opening when the cover is mounted thereon.

Abstract: The present invention is a safety system for a gas operated appliance in a vehicle. The system includes means for generating an electrical signal, such as a pre-determined voltage. The system also includes means for interrupting this electrical signal. One such means is a gas sensing means which is designed to interrupt the electrical signal in response to sensing gas. Another such means is an inertia switch means which interrupts the electrical signal in response to detecting a rapid changes in vehicle inertia or vehicle orientation. Yet another such means is a high temperature switch means which interrupts the electrical signal in response to detecting an elevated temperature in an area near said appliance. Finally, the system includes an emergency kill switch means for manually interrupting the electrical signal. The system further includes a fuel tank and a gas line between the fuel tank and the appliance.

Abstract: A cord-connected ductless range hood and backsplash. A bracket is mounted on a wall. The product is mounted on the bracket so that the backsplash is vertical and the hood is horizontal. The hood mounts lights and a fan and an electrical cord extends from behind the bottom of the backsplash. Internal wiring passes through the bracket.

Abstract: An air extractor arrangement is adapted to be flush fitted in a kitchen work-top 4 and which comprises a fixed housing 1 which is coupled to an extractor fan 8, and a pop-out section 10 which is telescopically disposed within the housing 1, a linear bearing in the form of a slide bar assembly 12,13 being provided between the housing 1 and the pop-out section 10 by means of which the pop-out section 10 is supported in the housing 1. Arrangements are described for driving the pop-out section 10 either semi-automatically or fully automatically.

Abstract: A grease absorption curb system for use in conjunction with roof top cooking exhaust fans to prevent grease which accumulates around restaurant exhaust fans from degrading roof top materials. The curb comprises a plurality of durable, lightweight, non-biodegradable blocks which are releasably joined together by a tongue and groove system to define a perimeter curb around the exhaust fan, with at least some of the blocks having drain tubes to allow water to drain from within the perimeter curb system to outside of the curb system.

Abstract: A cooking apparatus including an eye level range includes a vent system for exhausting heated air and providing cooling a range electrical control components. A manual off, low, high selector switch is operable to operate a blower fan motor. A thermostat switch is provided for sensing a high temperature adjacent a compartment housing the electrical controls of the range unit in order to automatically turn the fan on to its high speed when a preselected high temperature is sensed.

Abstract: Provided is a spit roaster comprising: a body having an opening communicating with an exhaust duct, formed at the center of the bottom wall thereof, and an air supply path defined at both ends thereof with respect to the longitudinal direction thereof and having an upper and a lower opening, a range case removably housed within the above body with required clearances therearound; a range removably housed within the above range case having a charcoal receiving space defined therein and support members disposed at both ends thereof with respect to the longitudinal direction thereof for supporting members for mounting materials to be cooked; and smoke exhaust frames communicating with the above exhaust duct, removably disposed upon the upper opening of an exhaust space defined between the rear side wall of the range case and the body, and having smoke exhaust inlets defined within the front sides thereof facing toward the range case.

Abstract: A multipurpose smokeless roaster comprising: a roasting unit (2), a ceiling (1) having an opened portion (7), a cylindrical outer box (9) having an exhausting unit (3) at the lower end thereof and opened at the upper end thereof, a cylindrical inner box (11) provided inside the outer box (9) and having a burner (23) inside thereof and being opened at the upper end thereof, and a suction passage (X) defined between the outer box (9) and the inner box (11) at a predetermined width for sucking a smoke generated during roasting and cooking. The inner box has an annular surface (15) on which a metal grill or a pot stand (18) are selectively mounted. A movable draft pipe (4) is slidably provided at the exhausting unit (3) of the outer box (9) and a connector box (5) is provided under the movable draft pipe (4) for connecting said movable draft pipe (4) and a duct unit (6) for defining an exhaust gas passage.

Abstract: This invention is an apparatus which collects and stores grease discharged from exhaust fan systems of commercial kitchens. There is a means for collecting the grease which is adjustable so that it can be attached to fit most any size commercial exhaust fan. Once the grease is collected, it flows into a means for storing the grease. The means for storing the grease is releasably supported by means for collecting the grease. Thus, the means for storing the grease can be released, the stored grease removed, and then re-attached to the means for collecting the grease. The invention also includes a means for discharging rain water that is collected by the means for collecting grease. Any water which is collected is discharged into the drainage pipe located on the restaurant roof.

Abstract: A ventilated work station for wet processing in laminar flow clean rooms is provided in which an aerodynamically shaped baffle comprises four continuous, curved surfaces which direct laminar air flow across the work station without creating hazardous conditions due to loss of fume containment. The laminar flow is further maintained without the creation of undesirable particle concentrating vortices at, or near, the work station surface. The aerodynamic exhaust baffle has two vertical surfaces joined by the two curved surfaces. Exhaust ducts are positioned along the first curved surfaces to thereby enhance the laminar flow contours.

Abstract: A monitor panel for insertion into a range hood for use in recreational vehicles wherein said panel employs locking wall means for quick connect-disconnect hand insertion and removal of the panel from an opening in said range hood. Said locking wall means cooperate with said monitor panel to maintain said panel within said opening against said range hood.

Abstract: Disclosed is a semiautomatic frying apparatus including a food carrying basket having a forward mounting lip and a rearward handle. The apparatus includes a basket-supporting shaft having a lip-engaging cradle for mounting the basket to the shaft. Disposed beneath the shaft, in a position to receive the basket upon rotation of the shaft, is a vessel holding heated cooking medium such as oil. A plate-like heater disposed beneath the vessel in heating contact therewith includes a bottom surface having a recess for mounting one or more temperature sensors, the recess opening into an airflow cavity. The frying apparatus is disposed within a cabinet and a fan and filter, also disposed within the cabinet, provides an air flow therethrough. A door connected by linkage to the basket-supporting shaft selectively blocks air flow through the cavity beneath the heating plate, and when opened to an unblocking position, purges heated air from the recess air, providing compensation for the temperature sensors therein.

Abstract: A top burner for a gas cooking range includes a burner vent having a radially upwardly sloping wall surrounding the burner head. An annular ring projects upwardly from an inner radial extremity of the wall to direct combustion products from the burner head into immediate scrubbing contact with the bottom of a cooking utensil. The wall terminates at an outer radial extremity adapted to be located in sufficiently close proximity with the bottom of the cooking utensil to restrict radially outward flow of combustion products. Capture ports adjacent the outer radial extremity of the wall exhaust combustion products through a vent pipe to the atmosphere at a positive pressure. A range oven/broiler may also be connected to the vent pipe to provide a fully vented range.

Abstract: A table (10) comprises a table top (11) having a centralized aperture into which a charcoal grill barbeque (12) is inset. Eating stations (13) are provided around the barbeque (12) on the table top (11) and a frame arrangement (21) fitted to barbeque (12) projects above the level of the table top (11) to prevent splashing thereof during use of the barbeque (12).

Abstract: A fire extinguishing system for a cookstove or range includes a fire extiisher mounted above a hood positioned over the cookstove or range. The fire extinguisher is connected to a pair of nozzles within the hood to dispense fire suppressant over the cookstove or range. The fire extinguisher includes an operator normally biased to the operable position, but held in the inoperable position by a cable having a plurality of fusible links distributed therein. The cable is held in tension adjacent the inner periphery of the hood. Upon the occurrence of a fire, at least one of the links separates, releasing the cable and allowing the operator to move to the operating position whereby the fire extinguisher releases the fire suppressant. A low-voltage control circuit is used to cut off the flow of electricity or gas to the stove and to sound an alarm. A battery is provided with the low-voltage control circuit so that the system will still operate if house current is interrupted.

Abstract: A table-mounted barbecue cooker is provided which has a grill, gas burner or coals, grease pan, smoke collection system and greaase collection system including a grease filter. The grill, burner or coal box, and grease pan are all easily removed for cleaning through the top of the barbecue cooker and the filter from underneath. The burner is so located as to prevent flames from reaching grease collection areas. Coals or charcoals may be used in place of a gas burner depending on the local fuel supply and for flavoring and appearance.

Abstract: A charcoal-fired smokeless roaster comprising: a ventilated outer box; an inner box disposed within the outer box with a suction passage having a fixed width therebetween; a dust pan placed on the bottom of the inner box; a charcoal container placed within and supported on the inner box; a lining lining the inner surface of the charcoal container; a fire grate provided in the lower part of the charcoal container; a gridiron placed on top of the charcoal container; an air supply pipe provided so as to open into the interior of the inner box in the lower part of the same; an air supply duct connected to the outer end of the air supply pipe; a controllable blower incorporated into the air supply duct; a frame circumscribing the upper circumference of the outer box; a top plate mounted on the frame; and a vertically movable exhaust pipe receiving the lower end of the outer box therein.

Abstract: A smokeless roaster comprises a ceiling or upper support wall extending horizontally and having an opened upper end; a roasting unit comprising an outer box having an opened upper end and mounted on the ceiling at the end edges thereof, an inner box having an opened upper end and supported by the outer box at the end edges thereof, and an exhausting unit provided at the lower part of the roasting unit tapering downwardly, the inner box having a metal grill at the upper portion thereof and a burner at the connected to the exhausting unit through a fixed pipe lower portion thereof; a movable draft pipe and having diameter being substantially same as maximum diameter of the exhausting unit; a connector box provided at the lower part of the movable draft pipe and connected with the movable draft pipe and having a static pressure equalizer for equalizing a suction force applied to the roasting unit; and a duct unit provided at the side of the connector box.

Abstract: A smoke shield assembly for an over-the-range oven includes a magnetically hinged deflecting shield movable between stored and in use positions. The assembly includes a metal base secured to a forwardly positioned bottom metal member of the over-the-range oven by four magnets. Two of the magnets securing the base to the oven also form a magnetic hinge that secures the deflecting shield to the base. The two other magnets securing the base to the oven further maintain the deflecting shield in the stored position. The deflecting shield is metal having a generally U-shaped pivot end magnetically secured to the base. The pivot end may have an unhemmed pivot edge or a hemmed pivot edge to ease pivoting between the stored and in use positions.

Abstract: A cooking or ventilating system has an extraction unit connected through an exhaust duct with the outside atmosphere, and a damper which is shiftable between positions operatively opening or closing the exhaust duct. A mechanism for opening and closing the damper under power includes an electric motor and a ball screw linear actuator driven by the motor. Air flow through the system is controlled to prevent exhausted grease from being carried up the exhaust duct. The damper is mounted for closing in the direction of air flow through the system and, when opened, for shielding the drive mechanism from smoke and grease, etc., in the air flow. Control circuits provide automatically timed normal operation of the motor as well as control operation of detergent and spray wash apparatus of the ventilating system. The control circuits also include a thermosatic sensor arrangement for sensing temperatures within the extraction unit.

Abstract: A fire extinguishing system for a cookstove or range includes a fire extinguisher mounted above a hood positioned over the cookstove or range. The fire extinguisher is connected to a pair of nozzles within the hood to dispense fire suppressant over the cookstove or range. The fire extinguisher includes an operator normally biased to the operable position but held in the inoperable position by a cable having a plurality of fusible links distributed therein. The cable is held in tension adjacent the inner periphery of the hood. Upon the occurrence of a fire, at least one of the links separates, releasing the cable and allowing the operator to move to the operating position whereby the fire extinguisher releases the fire suppressant.

Abstract: A hood device for use with a cooking range including an outer hood chamber, a central air opening for emission of gases emitted from the cooking range where at least one generally rectangular chamber is provided on one side of the center section and includes inwardly directed lip means on opposite sides of the area, with a hinge arrangement adjacent to one of the lip areas. A utensil holder is pivotally connected to the hinge arrangement adjacent to the lip area where the utensil holder has a generally planar back surface and where the hinge includes an arrangement to allow longitudinal (fore and aft) movement of the back panel so that the back panel can be swung upwardly into the retangular opening and can then be moved forward so that an edge of the back panel is located on the second lip to retain the utensil holder in a stored position and where the back panel can be moved aft in the opposite direction to allow the back panel and utensil holder to be lowered into an accessible position.

Abstract: An exhaust-only type of kitchen exhaust hood is provided with removable fume-guide plate upstream of the in-hood grease filters. The plates are shaped to provide a forward flow of fumes from the rear of the hood forward over the cooking unit toward the front lip of the hood. A slot is provided between the front edge of the plate and the front wall of the hood whereby the air flow into the hood accelerates around the front edge of the plates to provide a flow rate of approximately 200 feet per minute at the front edge of the hood. Slots are provided between the hood ends and adjacent side edges of plates next to the ends. The plates are movable to facilitate changing of filters.

Abstract: A kitchen exhaust hood covers the top of an oven and food conveyors which extend on both sides of the oven. Plates in the hood cooperate with the walls of the hood to provide slots at the hood front and sides to accelerate the air under the plates adjacent the slots and provide high velocity exhaust air flow upward in the hood at the front and sides of the hood to capture heat and fumes. The plates are located slightly above the lower edge of the hood, to minimize induction of room air horizontally into the hood under the edge, and assure collection of air that has been associated with the oven and has accumulated heat or collected contaminants. Air flow guides at ends of a conveyor direct heat and fumes around the ends of the conveyor toward the conveyor covering hood portions.

Abstract: An onboard kitchen for an aircraft includes at least one kitchen unit with a counter top, a kitchen sink and a venting hood connected to an air exhaust conduit. A cyclone type separator is connected with its inlet and outlet ports into the exhaust air conduit thus connecting the separator to the venting hood. The cyclone type separator divides the airflow into a clean airflow which is led into a clean air discharge conduit and into a contaminating particles carrying airflow which is led into a discharge pipe connected to a drainage duct which connects the kitchen sink, preferably to a drainage pylon outside the aircraft body. The use of filters is thus avoided and the maintenance costs are minimized.

Abstract: A header assembly for use in combination with a deep fat frying cooking device includes a casing having three external venting systems and two internal passageways associated therewith. Heated air from within an enlarged chamber surrounding the cooking kettles of the cooking device can flow upwardly through one of the internal passageways and the first venting system of the header assembly into the surrounding atmosphere external to the header assembly and the cooking device. As a result of this convention flow of heated air and the close proximity of the first venting system with the second venting system, cooling air from the exterior is drawn through the other internal passageway and the second and third venting systems. This cooling air serves to protect a heat-sensitive microprocessor controlled cooking computer, which extends partially into the second passageway, from being subject to temperatures above its maximum operating temperature.

Abstract: The invention is an oven ventilation system which uses sheets of moving air to remove heat and also to insulate the oven from the remainder of the room or vehicle in which the oven is located. More particularly, the ventilation system takes air from outside the room or vehicle and forms rapidly moving sheets of air which pass over the external surfaces of the oven. After passing over one or more of the external surfaces of the oven, the sheets of air are exhausted to the outside. Preferably, the ventilation system also comprises wall means for forming a chamber to separate the oven and ventilation system from the remainder of the room or vehicle.

Abstract: A cooking stove is provided with a top plate, for receiving cooking utensils, which can be easily and rapidly removed for servicing purposes, etc. The top plate is retained against the stove housing by a very simple catch mechanism at the front and is attached to the housing at the rear by means of screws, at a position adjacent to an air inlet/outlet aperture, with a cover of this aperture also serves to mask the screws, for improved appearance.

Abstract: A method of preventing smoke curling from beneath depending enclosure walls of a grease extraction ventilator, comprises providing a series of apertures in the walls from adjacent the lower edge thereof for a predetermined distance upwardly. The apertures are preferably comparatively small and relatively closely spaced, being preferably placed in parallel rows, also parallel to the lower edge of the wall, with the apertures of adjacent rows. The number of rows may be varied, depending on the height of the wall and the capacity of the ventilator, with additional apertures for a ventilator having a larger capacity. The apertures may be slots, such as relatively short, and with the spacing between parallel rows being equal to or less than the height of the slots, with the lowest row being relatively close to the lower edge of the wall. Or, the apertures may be circular or having other shapes, such as oval, elliptical or the like.

Abstract: Heat shield and ventilation system for a pizza oven uses cooling air drawn mainly from the outside, which is directed around all four sides and over the top of the pizza oven by a heat shielding shroud that covers the top, back and ends, but leaves the front of the oven free for access to the doors that extend across most of the oven front. The shroud side panels are provided with deflectors that redirect air to flow forwardly along the oven sides to cause it to follow in a path flowing laterally inwardly and upwardly along the oven front, providing a curtain of cooling air that mixes with and entrains the heated air at the oven front face to be drawn into an exhaust port at the center of the top of the oven front.

Abstract: A range hood (2) mounted above a kitchen range (4) includes one or more storage shelves (6, 8) in the hood. An adjustable tilt-out front panel (22) is adaptable to include openable doors (24) for accessing the shelves, and is operated by a user between a position flush with adjacent cabinetry (20) or the like, and an extended position increasing the vapor collection area above the range. A gravity operated baffle (30) maintains integrity of the collection area liner by covering the additional collection area when the front panel is in the tilted-out position or any position inbetween. The housing (14) for the hood has an upper portion (16) and a lower depending portion (18) adjustably mounted to the upper portion to provide an adjustable overall vertical height. A hood mounting system provides built-in three dimensional adjustment and allows an installer to restrict adjustments to a single plane at a time for final fine tuning adjustment.

Abstract: This invention relates to a gas cooking device comprising a circular gas burner and a mounting member such as a tripod on which an article to be directly cooked or a cooking container such as a pan or pot is to be mounted. The gas cooking device further comprises a cooking container adjuster which serves to adjust a vertical position of the cooking container to adjustably set a distance between a bottom of the cooking container and the gas burner in accordance with the configuration of the bottom of the cooking container. The cooking device further comprises forced exhaust means to discharge exhaust gas, smoke or steam which is produced from the cooked food. Thus, the invention allows a cover to be omitted.

Abstract: An oven has a cooling system which includes air channels which run along the top rear and bottom walls of the oven compartments. First and second channels are provided, the first channel being used principally for providing air flow for outdoor venting, the first and second channels being employed for indoor venting which occurs through an outlet at the very bottom of the lower oven compartment. The oven can rapidly and easily be converted for outdoor venting by removing a cover attached to a top portion of the oven system and installing an outdoor venting duct. A blower is used to circulate air for both indoor and outdoor venting.

Abstract: A roaster has radially spaced outer and inner casings with a smoke outlet passage defined therebetween. The inner casing has an annular step extending along an inner peripheral surface thereof. A circular grill for roasting meat thereon or a circular trivet for supporting a "shab-shab" pot thereon is replaceably placed on the annular step in the inner casing.

Abstract: A downdraft countertop cooking range having an improved ventilation system for removing smoke and cooking odors from the entire cooking panel area. The range has a modular cooking panel recessed substantially below the countertop for enhanced accessibility from the front of the range. Exhaust louvers spaced between the ends of the cooking panel and the top edge of the range frame, and of substantially equal depth to that of the cooking panel, assure an adequate flow of exhaust air over the cooking panel area.

Abstract: An oven ventilating system is provided for use in conjunction with a proximity ventilated range having modular plug-in cooktop cartridges. A vent tube extends upwardly from an oven vent outlet to a position adjacent the air intake grill. The venting path, in one embodiment, is completed by a collar-like chimney portion of the air intake grill which cooperates with the top of the vent tube to conduct exhaust fumes to above the top surface of the range.

Abstract: An elongated relatively narrow vent member is mounted along the rear edge of a cooktop having a plurality of burners. The vent member has an air chamber formed therein which is coupled to a vent duct having a blower at the outlet thereof which provides suction in the chamber. A motor-driven drive system is provided to raise and lower an intake or "snorkel" member which is slidably mounted in the air chamber. The drive system operates in response to the actuation of a momentarily actuated pushbutton switch. The snorkel member has an intake slot formed along the top edge thereof such that when it is in its raised position, the intake slot is a substantial distance above the cooktop burners. In its lowered position, the snorkel member is fully recessed in the chamber and closes the vent system against backdrafts from the outside.

Abstract: An air ventilation system for cooking equipment having an exhaust hood disposed thereover in a building having a heating-ventilating and air-conditioning system for treating the air in the building. The exhaust hood includes a collection chamber and an exhaust chamber with a filter means mounted therebetween. An exhaust fan draws air loaded with cooking vapors, odors, fumes, smoke and other pollutants collected in the collection chamber through the filter and the exhaust chamber and out through an exhaust passage to the atmosphere. A source of fresh air provides a predetermined amount of fresh makeup air to the collection chamber. A temperature control unit is connected to another source of fresh air, and to the return air duct of the heating-ventilating and air-conditioning system of the building or a room in the building, for providing a combination of fresh air and tempered air to an air curtain passage for forming an air curtain along the front side of the exhaust hood.

Abstract: A kitchen exhaust apparatus is disclosed herein which comprises an enclosure having a bottom opening with a plate mounted in the opening to define an exhaust opening, a filter mounted within the enclosure, and air inlet and exhaust means for directing air from outside the enclosure to the exhaust opening and subsequently through the filter and out of the enclosure. In another aspect there is disclosed a combination cooking unit and exhaust apparatus mounted above the cooking unit.

Abstract: A vent apparatus for a surface cooking appliance comprises a vertically slidable closure mounted to slide in a duct in the surface of the appliance. The closure has a slide engaging a track in the front of the duct below the surface of the appliance, an open side within which filters may be removably mounted.

Abstract: The blower is made separate from the rest of a self-ventilated range and is installed prior to the installation of the range. The blower can be selectively mounted for through-the-wall or through-the-floor discharge and is located so that the hole in the wall or floor misses the studs or joists, respectively. After the blower is installed, the self-ventilated range is set in place over the blower and the blower is connected to the plenum by means of a flexible pipe. In this way the plenum can be made thinner providing more room for the oven cavity.