1778 results about "Ventilation duct" patented technology

A method and a device for operating an internal combustion engine having an intake manifold and a ventilation system may allow a reliable and fault-free diagnosis of a fault in the ventilation. The ventilation system may be a tank ventilation or a crankcase ventilation. The ventilation duct is conducted to the intake manifold of the internal combustion engine. At least one pressure differential may be determined between an intake-manifold pressure or an ambient pressure, on the one hand, and a pressure in the ventilation duct, on the other hand. A fault in the ventilation may be diagnosed as a function of the at least one pressure differential.

An axial fixing device for axially fixing an annular brake disk on a wheel hub of a motor vehicle, the annular brake disk having the same axis of rotation as the hub and including radial ventilation ducts regularly distributed about its periphery. According to the invention, the hub has axial guide pieces in relief, or "lugs", for co-operating with fluting in an inner peripheral edge of the disk to center the disk, to lock it angularly, and to guide it axially relative to the hub, each lug of the hub having a radial through channel for co-operating with a corresponding ventilation duct of the disk, and the disk is held axially in the hub with play by axial holding means disposed between the disk and the hub.

In a ventilation duct of a cooling system, a level difference is formed between a wall located on a vehicle front side and a wall located on a vehicle rear side because a bottom end of the wall located on the vehicle front side is lower than a bottom end of the wall located on the vehicle rear side. The level difference makes a speed of a traveling wind flowing near an outlet faster than that flowing away from the outlet. Therefore, a pressure of the traveling wind flowing near the outlet decreases. As a result, air flows in the ventilation duct to be drawn to the neighborhood of the low-pressure outlet, and discharged out. Because cooling air including the traveling wind can be increased, heat radiation capacity of a radiator disposed in the ventilation duct is improved, and the cooling capacity of the cooling system can also be improved.

A duct and ventilation system for livestock production buildings. The building comprises a plurality of containment rooms for livestock, a pit beneath the room, an attic above the rooms, a ventilation duct for each room and a ventilation house coupled to the pit. The containment rooms have slatted floors. The attic includes a vent. Each ventilation duct includes a manually actuable air flow control valve. The ventilation house includes an exhaust fan and is adapted to draw air through the vent and through the attic to one of the ventilation ducts and into one of the rooms through the slatted floor and out via the ventilation house. The building may include a manifold area adjacent the rooms and in fluid communication with the attic. Ventilation ducts comprise a laminar polymer sheet having a generally rectangular shape and forming a corner generally parallel to first and second side edges, a second laminar and planar polymer sheet having a first edge and a second edge, and a plurality of brackets. The first edge of the second sheet attaches to the first sheet such that the second sheet is substantially parallel to the corner. The brackets position the first sheet and the second sheet in the room.

Embodiments are described for preventing downward flow of substantial surface water into an underground ventilation duct communicating upwardly to a ground surface opening. The embodiments comprise a support having a top opening and an opening in a lower portion above a floor. The opening in the lower portion is for venting communication with a proximate portion of the ventilation duct. The support supports at least one seat and paired buoyant gate set. The seat is mounted perpendicularly relative to the gate and a portion of a passageway under the seat for fluidly communicating beyond such portion to the top opening of the support and to the proximate portion of the ventilation duct. The buoyant gate is positioned lower than the seat and the passageway, is of sufficient size to block the passageway, and is responsive to water rising in the support by floatingly pivoting upwardly until engaging the seat, thereby blocking the passageway. In an embodiment, the seat of at least one set is mounted under the top opening spaced from one of the opposing sides a horizontal distance nominally equal to a fraction applied to a length for the particular opening, the fraction having the numerator 1 and a denominator which is the sum of 1 plus the number of seat and gate sets, and the buoyant gate has a seat engagement height nominally equal to the same fraction applied to the same opening length.

The invention provides a novel kitchen garbage fermentation device and a usage method, which belongs to the environmental protection device field. The device provided by the invention comprises a U-shaped fermenter, a feed inlet, a discharge port, a fragmentation stirrer, a variable frequency motor, a blower, a ventilation duct, an air vent, a microbe inlet pipe, a charging nozzle, an electric heating pipe, a water interlayer, a protection layer, a deodorizing tower, a support and the like. The fragmentation stirrer is composed of a stirring horizontal shaft, a blade support and a triangle cone blade with arc bottom. Several electric heaters are arranged in the interlayer of a double layer U-shaped fermenter. The variable frequency motor drives the fragmentation stirrer to perform fragmentation stirring on the kitchen garbage. The electric heating pipe heats the water interlayer so that the temperature of the fermenter can be kept between 40-60 DEG C, air is introduced in the ventilation duct through the blower, and a microbe liquid bacteria agent is inoculated in the fermenter through a nozzle on the microbe inlet pipe. The product is discharged out of the fermenter through the discharge port, thereby the minimization of the kitchen garbage can be realized, and the product can be used as a soil organic fertilizer conditioning agent.

The present invention provides a permanent magnet synchronous motor, belonging to the technical field of motors. The permanent magnet synchronous motor is characterized by: adoption of a solid shuttle-shaped rotor structure; a large radial air gap and an axial non-constant air gap; a permanent magnet adopting a radial buried structure; a starting squirrel cage embedded on the rotor; and the rotor and a stator both provided with corresponding ventilation ducts that facilitate cooling air which passes through the large radial air gap to take away heat of the surface of the solid rotor and heat of the stator itself. The permanent magnet synchronous motor in the invention not only solves a problem of starting difficulty in a permanent magnet motor having a conventional laminated rotor, but also solves a problem of heat dissipation difficulty in a permanent magnet motor having a conventional solid rotor. The permanent magnet synchronous motor in the invention with a starting torque from 2.0 to 3.0 further overcomes a problem of easy demagnetization of the permanent magnet caused by a too high temperature of the rotor.

The invention discloses a layered ventilation method and a layered ventilation system for a grain store. Horizontal ventilation ducts are respectively arranged on the ground of the grain store and at the interior of a grain stack, a vertical air duct is arranged at a static pressure box to communicate two layers of air ducts to a ventilator outside the store so as to form the double-layer ventilation system, the grain stack is divided into a plurality of ventilation areas, and positive or negative layered ventilation operation is realized by combining conversion of air guide turnover plates, switching of an upper valve and air inlet and suction modes of the ventilator. Compared with a traditional ground cage trough ventilation system, the layered ventilation system has the advantages that: effective ventilation, moisture reduction, doubling of the height of the grain stack, good ventilation uniformity, basically no dead angle, high ventilation efficiency, simple and reasonable structure, low equipment cost, low energy consumption and capability of meeting the requirements of large bungalow stores for cooling grain stacks and drying in the stores.

An inline duct supplemental heating and cooling device provides heated and/or cooled air to a room in a building to supplement the heating provided by the existing furnace or the cooling provided by the existing cooling unit in the building. The device includes an electric heater and fan that are activated and deactivated individually by a controller, which receives room temperature data from a thermostat. The device may include one or more separate safety devices to prevent overheating of heater air or of the device itself. Optionally, a vibration-insulating sleeve may be used to couple the device to an existing ventilation duct of the building.

The invention consists of a vent booster fan, comprising: a) a vent housing, forming a vent which is operable for insertion into a ventilation duct; and defining a vent surface through which air flows from the duct; b) a fan assembly located within the vent housing, containing a fan operative to force air through the vent, the fan assembly located within the vent housing so as to be located substantially within the duct; c) an air deflector covering a portion of the vent surface sufficient to alter airflow from the vent.

A premium ventilated toilet having an automated toilet ventilation system for removing noxious fumes from a bowl area of the toilet is disclosed. The ventilation system is mostly built-in to the toilet (e.g., ventilation ducts, and sensors) so that it is unobtrusive and attractive looking, however the active parts (e.g., a blower unit containing a blower impeller, a backflow shutoff valve, and electronic control circuitry) are contained in an simple housing that is unobtrusively and removably attached to the surface (preferably on the side) of the toilet base for simplified installation, maintenance, and replacement as needed. Automated operation is enabled by a non-contact occupancy (proximity) sensor and a flush sensor, both preferably built into a flush handle of the toilet. Detection of occupancy causes the ventilation system to operate and flushing turns it off.

A vibrational damper reduces torsional vibration within a crankshaft of a marine engine. The vibrational damper is located on an end of the crankshaft opposite of the flywheel and includes an inertia ring that adds additional mass to this opposite end. In addition, the vibrational damper includes an elastic member that suspends the inertia ring about the crankshaft. The elastic member effectively dampens torsional vibrations. The torsional damper desirably is cooled by an air flow so as to maintain it's dampening efficiency. A ventilation duct, which is positioned directly above the vibrational damper, supplies the cooling air. Cooling is enhanced by locating a bilge system inlet below and slightly behind the vibrational damper. An air flow stream occurs between the duct and the bilge inlet and across the torsional damper to cool the torsional damper.

A grow box made from a box or cooler with a light enclosure and ventilation ducts for temperature regulation and circulation of air, and a timer for control of the light source. The grow box is sturdy, transportable, and stackable. A method for creating the grow box is included.

The invention provides solid electric heat storage equipment and relates to the field of solid electric heat storage. The solid electric heat storage equipment is characterized in that a first air return duct communicates with an air return chamber, all air ventilation ducts in a heat storage body, and the inlet of a heat exchanger; a second air return duct is formed among a second fire-barrier insulation plate, a heat storage body insulation layer and a shell insulation layer; and through circulation air ducts on two sides, the circulation air of the solid electric heat storage equipment enters the heat storage body from the two sides after being blown from draught fans on the two sides. The solid electric heat storage equipment is simple in structure, lower in insulation material consumption, high in efficiency and the like, and can be popularized and utilized as a novel air circulation system for the solid electric heat storage equipment.

A fuel leak detection system for use in a turbine enclosure is provided. The system includes a ventilation duct extending through an interior cavity of the turbine enclosure such that an extended portion of the ventilation duct is positioned within a bottom portion of the turbine enclosure. The ventilation duct includes a plurality of openings configured to allow air from within the turbine enclosure to be drawn into the ventilation duct through the plurality of openings. The system also includes a sensor system coupled in flow communication with the air drawn into the ventilation duct, the sensor system configured to detect fuel in the air.

A vented cover includes a pair of cross-flow ventilation ducts each including an acoustic noise reduction lining. The ducts are “cross-flow” in that they cross and bypass one another. The cover is affixed to an enclosure containing components of a computer system and abuts against a panel of the enclosure having an airflow aperture. An air moving device (AMD) passes air through the enclosure from the ducts if the cover is an intake cover, and/or into the ducts if the cover is an exhaust cover. The ducts increase the air path length, and the acoustic absorbing surface, thereby increasing acoustic attenuation. Airflow resistance is reduced by reducing surfaces perpendicular and close to the area where air enters and by reducing sharp turns in the ducts. The cover has a relatively thin depth because the ducts cross and bypass each other in a very space efficient manner.

The present invention discloses a fresh wind ventilator which includes an enclosed case, a first opening communicating with indoor and a second opening communicating with outdoor are mounted on the enclosed case respectively; a centrifugal fan is wobblingly set between the first opening and the second opening inside the enclosed case; the air inlet port and air outlet port of the centrifugal fan switches correspondingly to communicate the first opening and the second opening. Only a ventilation duct is set through the second opening between the ventilator and outdoor and only a wobbling centrifugal fan is set inside the ventilator, therefore, the whole ventilator volume is decreased, the structure is simple and convenient for mounting. Meanwhile, air entered into the room can be purified because of a filtration device and a third opening set inside the fresh wind ventilator; indoor and outdoor ventilation and indoor air purification on one ventilator at the same time can be realized through the invention.

A vehicle ventilation duct includes a duct body, a conduit, a sound absorption chamber, a transmission opening communicating the conduit with the sound absorption chamber, and an air-permeable member closing the transmission opening permeably. The duct body is disposed in a vehicle outer hull, and includes a frame having a ventilation opening opened to the outside of a vehicle and a valve element covering the ventilation opening openably and closably. The conduit is formed integrally with or independently of the duct body, is disposed on a vehicle-passenger-room side of the duct body, is communicated with the ventilation opening of the duct body, and is communicated with the inside of a vehicle passenger room, whereby enabling air inside and outside the vehicle to pass therethrough back and forth. Thus, the ventilation duct lets out air in the vehicle passenger room to the outside of the vehicle or vice versa.

A braking band of a disc for a ventilated-type disc brake, uncommonly capable of a high cooling and high resistance to mechanical and thermal stresses, extends between an inner diameter and an outer diameter, said braking band comprises two plates mutually facing and defining an interspace, mutually linked by heat dissipation and connecting means or members; at least some of said connecting means are shaped as small columns projecting from a plate towards the opposite plate in the form of pillars, which are grouped in at least one circumferentially arranged row or rank; at least some of said pillars of said at least one rank have, in a plane substantially parallel to the air flow along the ventilation ducts, a substantially rhombus- or diamond-shaped section with four vertexes joined by four sides, wherein said sides defining said section are concave to form a star shape.

The present invention relates to a combined cooling/climate control system for motor vehicles for cooling the motor vehicle's electrical and/or electronic components and air conditioning of a passenger compartment of the vehicle, comprising: a main ventilation duct (13); a fan (15) for drawing in air disposed in the main ventilation duct; a heating unit (16) downstream of the fan (15) for selective warming of air, which is to be supplied to the passenger compartment; and for cooling the electrical and/or electronic components with air drawn in by the fan (15), an air supply pipe (20) downstream of the fan (15) and upstream of the heating unit (16) connected to the main ventilation duct (13) and an air discharge pipe (22) upstream of the fan (15) connected to the main ventilation duct (13).

An indoor unit for an air conditioner capable of performing cooling and heating, as well as ventilation functions as a single unit is provided. The indoor unit includes a main chassis, a ventilation port, a cross-flow fan, a side fan, and a ventilation duct. The main chassis is installed on a mounting portion and composing its exterior. The ventilation port formed to pass through the main chassis for inletting and exhausting air. The cross-flow fan is installed on one side of the main chassis to blow air in a direction perpendicular to its rotating shaft. The side fan is formed next to the cross-flow fan. The ventilation duct is connected to the ventilation port of the main chassis to ventilate the air forcibly blown by the side fan.

The invention relates to drinking water air-making equipment, which comprises a shell, a frame, a water air-making part, a water treatment part and a control part, wherein the water air-making part, the water treatment part and the control part are all arranged in the shell; the water air-making part comprises an absorption rotating wheel, a heat removal fan, a regeneration heater, a heat exchanger and an air inlet fan; the heat removal fan and the regeneration heater are connected with each other, and are fixed on the frame together; the heat exchanger comprises an external heat exchanger cavity and an internal heat exchanger cavity; the regeneration heater forms an absorption rotating wheel regeneration area on the absorption rotating wheel; the absorption rotating wheel, the external heat exchanger cavity and the air inlet fan form an intake duct; the heat removal fan, the regeneration heater, the absorption rotating wheel regeneration area and the internal heat exchanger cavity form a damp and hot duct; and the absorption rotating wheel regeneration area is connected with the heat exchanger by a regeneration ventilation duct. The drinking water air-making equipment provided by the invention has a rational structure, good drinking water air-making effect and a wide application range, and is convenient and fast to operate.

An insertion assisting device 60 has an insertion path 70 into which an insertion portion 12 of an endoscope 100 is inserted and has a substantially tubular shape. The insertion assisting device 60 includes a ventilation opening 90 that is formed on a distal-end surface or outer circumferential surface thereof, a ventilation duct 74 that communicates with the opening 90 and is different from the insertion path 70, and a liquid reservoir tank 116 that is connected to a base-end side of the duct 74 and stores liquid flowing out of the duct 74.