674results about How to "Improve ventilation efficiency" patented technology

An air conditioning system is provided. The air conditioning system includes an air cleaning unit. The air cleaning unit includes a grill having a discharge grill on a side portion, a fan sucking indoor air and/or outdoor air, a filter cleaning the sucked air, and an installation case attached to one side of the discharge grill and having a suction hole and an exhaust hole. A ventilation unit operates in association with the air cleaning unit. A duct member connects the air cleaning unit and the ventilation unit.

A ventilation apparatus includes a stator, a vibrator arranged close to the stator, a permanent magnet to generate a magnet flux to form a path of the magnet flux along the stator and the vibrator, a coil wound around the stator or vibrator, and a ventilator coupled to the vibrator and operated by a linear reciprocating motion of the vibrator generated when an electric current is applied to the coil to change the magnet flux of the permanent magnet. Thus, the ventilation apparatus having a simplified ventilation structure increases a ventilation efficiency.

An LED bulb includes a lower cover having ventilation holes formed at outer periphery thereof, and a first coupling opening formed at top side thereof; a separating unit provided within the lower cover at a position between lower edges of the ventilation holes and bottom side of the lower cover, and having a convection pathway formed at top side thereof; a heat sink having bottom end positioned on top side of the separating unit; and an upper cover having top side formed with convection hole corresponding to top end of the heat sink, and a second coupling opening formed at bottom side thereof. When the second and first coupling openings are coupled with each other, the upper and lower covers are assembled together to form a central axis bidirectional convection heat dissipation pathway sequentially through the ventilation hole, the convection pathway, the heat sink and the ventilation hole accordingly.

A ventilation fan with lamp is installed to the ceiling having an installing opening. The ventilation fan includes a housing, a fan module, and a lamp module. The housing has a top plate and a side wall. The top plate and the side wall are connected with each other and form a first opening. The first opening connects to the installing opening. The fan module is accommodated in the housing. The lamp module is disposed out of the installing opening, and the lamp module and the housing are located at opposite sides of the ceiling.

The invention is a substitute ventilation radiator belonging to heating and ventilating air condition refrigerating field. The invention includes a radiator, substitute ventilator. The radiator is arranged on the board at one side of the substitute ventilator, the board of the substitute ventilator is used as the bottom board, and the radiator and the substitute ventilator are arranged together back to back. It has characters of substitute ventilation and radiation cooling and heating technology, it can supply fresh wind to room with substitute method, eliminates the humid charge in the room, satisfies the demands of people for fresh air; it can cool or heat the room with radiator, bears the sensible cool or heat charge in the room, upgrades the comfort level and the air quality in room, saves the air condition consumption and the construction space.

The invention relates to an air purifier for clearing away harmful gases and dust for a long tunneling working surface, aiming at solving the problem that the ventilation for the tunneling working surface for construction of a long tunnel is difficult. A centrifugal fan is used to send harmful gases CO, CO2, NO, NO2, sulfides and dust in the tunnel into a degrading tool through a suction guard and a connecting pipe. The CO and NO, which are left after the reaction degradation, are sent into an absorption box through the connecting pipe, and the residual gases are filtered off water vapors by a porous fiber separating membrane, and the CO and a little of NO, which are left after the degradation and membrane filtration, are absorbed by a low-temperature pressure swing adsorption tower; the pressure swing absorption tower which absorbs the CO and NO is transported out of the tunnel, wherein the tower is heated to 80-135 DEG C by an electric heating tape in the tower to desorb the CO and NO. The air purifier can effectively prevent pollution to the tunneling working surface from harmful gases, and is suitable for clearing off harmful gases and dust.

An Electronic Control Unit which houses electronic circuit for controlling various devices of vehicles in a sealing case is characterized in that the case has a ventilation hole to communicate an interior and an exterior of the case, the ventilation hole comprises a filter for preventing from entering contaminants from the outside, and a sectional area of the ventilation hole is gradually enlarged toward the interior of the case.

A baby sling with foot support shoes is disclosed, which is capable of supporting a baby's feet so that the baby's knees are bent and legs are not dangling when the baby is held on a carer's chest by the baby sling, so as to prevent the baby's thighs from being pressed and chafed between the carer and the baby sling, while improving the baby's health and stability by allowing smooth blood circulation.

The invention relates to an inducing ventilation system of a ship engine room. The inducing ventilation system comprises an air blower, an exhaust fan and an electrical control cabinet. The air blower and the exhaust fan are arranged at the tops of inner corners of the two sides of an engine room body respectively. The air blower and the exhaust fan are communicated with air inside and outside the ship engine room under the control of the electrical control cabinet. Inducing fans are arranged in the ship engine room, air inlets of the inducing fans are provided with air heat exchangers, and air outlets of the inducing fans are provided with jet flow nozzles in a scattered shape. The inducing fans are arrayed at intervals in a head and tail corresponding mode to form multiple circulation rings, wherein according to the circulation rings, air enters from the air blower, and air discharging is achieved through the exhaust fan. The air performs relaying according to a preset process through the inducing fans, so that an air flow pushing and pulling effect is achieved, a velocity field of air flowing is generated in the whole ship engine room, and ventilation is smoothly performed on the engine room. The arrayed inducing fans form relaying inducing air blowing, so that air pipes are omitted, space is saved, and cost is reduced.

The invention discloses a chromium fog waste gas recovery treatment device which comprises a waste gas collecting device and a waste gas treatment device, wherein the waste gas collecting device consists of a rim exhaust hood (1), an air inlet pipe (2), and an air draft branch pipe header pipe (3), wherein the air inlet pipe (2) is connected with the rim exhaust hood (1) and the air draft branch pipe header pipe (3), the air draft branch pipe header pipe (3) is arranged at the upper end of the rim exhaust hood (1), an electroplating bath (11) is arranged at the lower end of the rim exhaust hood (1), and a gap is arranged at the lower end of the rim exhaust hood (1), at least three air draft holes (10) are arranged in the upper end of the rim exhaust hood (1), a movable cover plate (9) is arranged on the rim exhaust hood (1), the waste gas treatment device consists of a waste gas spraying purification tower (4), an air outlet pipe (5), a chromium fog recoverer (6) and a recovery liquid tank (7), and a funnel cap (8) is arranged at the upper end of the recovery liquid tank (7). By adopting the structure, the solution can be effectively recovered, and the emission concentration can be reduced.

The invention relates to a pair of breathable shoes. Each breathable shoe comprises a shoe sole body, an air bag component and a groove. Each air bag component comprises an inlet pipe and at least one outlet pipe; an inlet check valve and an outlet check valve are respectively arranged in the inlet pipe and each outlet pipe; each shoe sole body is connected with a waist plate; an inlet passage communicated with the outside is arranged in each waist plate; each inlet passage is communicated with the corresponding inlet pipe; each shoe sole body comprises a half sole part, an arch part and a heelpiece part; each half sole part is provided with a release slot and an air bag; the outlet pipes on each air bag are communicated with the corresponding release slot; each inlet check valve and each outlet check valve are located at the corresponding heelpiece part. Air inlets of each breathable shoe are located on the corresponding waist plate far away from the ground, and therefore, the phenomenon that water or dust enters the inlet passages to cause the air bag components to be blocked can be effectively prevented, and the reliability is high. Each inlet check valve and each outlet check valve are arranged on the corresponding heelpiece part, so that the safety and the comfort are better; each air bag is arranged at the corresponding half sole part, and is capable of sucking and releasing more air to play a role of rapidly cleaning air in the shoes, so that the ventilation Efficiency of the interiors of the shoes is improved.

The present invention discloses a front suction/discharge type outdoor unit for a split type air- conditioner which is installed in an opening space of an outer wall of a building, for sucking outdoor air from the front surface, exchanging heat and discharging the heat-exchanged air. A pair of sirocco fans having a relatively large ventilation amount are used to send the outdoor air to condensers, and stable high efficiency BLDC motors are used to drive the sirocco fans. Even if the air is sucked or discharged to/from a restricted space, ventilation amount and efficiency can be increased to improve cooling capability and reduce abnormal noises.

The invention provides a high-pollution building space exhaust disinfection and purification system and method. The system comprises a pollution region negative pressure metal ventilation pipe, and any position of the pollution region negative pressure metal ventilation pipe is communicated to the inlet end of a high-resistance ventilation pipeline with a heat insulation and insulation layer. Theoutlet end of the high-resistance ventilation pipeline with the heat insulation and insulation layer is connected to the inlet end of an outdoor negative pressure metal ventilation pipe through an electric backflow prevention valve, and the outlet end of the outdoor negative pressure metal ventilation pipe is connected to an extraction opening of an efficient frequency conversion draught fan. A plurality of virus killing devices are sequentially arranged at the rear end of the efficient variable-frequency draught fan. By means of the system and method, air possibly containing viruses in a high-pollution building space is subjected to high-temperature disinfection and sterilization through an electric heating pipeline, then the air subjected to high-temperature disinfection and sterilization is guided to an outdoor multi-virus disinfection and sterilization device through the negative pressure pipeline to conduct diversified thorough disinfection and sterilization on the introduced air,and the viruses in the air in the high-pollution building space can be thoroughly removed.

The present invention relates to gas distributing mechanism of engine, and is especially one kind of four-valve gas distributing mechanism with two top set cams mainly for 125-175 cc displacement engine of motorcycle and motor tricycle. The four-valve gas distributing mechanism includes one gas intake duct with intake valve and one exhaust duct with exhaust valve on the cylinder head. It features the intake valve and the exhaust valve with separate clamping slot in the bar end, the spring holders set in the clamping slots, the conic blocks between the spring holder and the bar end, and the valve springs in holder. The present invention can raise gas exchanging efficiency effectively for complete burning.

A magnetoelectric generator includes a bowl-like flywheel (3) having a bottom portion (6) formed with ventilation holes (20), a plurality of permanent magnets (7) secured to an inner circumferential surface of the flywheel (3), a stator core (10) disposed within the flywheel (3) and having peripheral side surfaces facing the permanent magnets (7), and a coil assembly (11) implemented by winding an electric conductor on the core (10). Electricity is induced in the coil assembly (11) by AC magnetic field produced by rotating the flywheel (3). A peripheral edge portion of each ventilation hole (20) is formed with a projecting portion (21) by plastic deformation, which protrudes toward the coil assembly (11) for producing turbulent air flows internally of the flywheel (3) upon rotation of the flywheel (3).