64results about "Ventillation gasproof devices" patented technology

Apparatus for oxygenating an enclosed space as well as removing carbon dioxide from the enclosed space.

Apparatus for oxygenating an enclosed space as well as removing carbon dioxide from the enclosed space.

An air revitalization apparatus and method simultaneously removes carbon dioxide, water vapor, and heat from air and produces oxygen gas, hydrogen gas, and concentrated carbon dioxide gas, does not require an explosion proof enclosure, and includes a fan configured to blow air into a first gas-liquid contactor, an electrochemical cell including first through fourth passages configured to emit hydrogen gas, permit a flow of a carbonate-hydroxide solution, permit a flow of carbonate-bicarbonate solution, and emit oxygen gas, respectively, the first and fourth passages separated by at least three gas-impermeable membranes, and a second gas-liquid contactor, where the first gas-liquid contactor, second passage, and a first pump are configured to circulate the carbonate-hydroxide solution therethrough, where the second gas-liquid contactor, third passage, and a second pump are configured to circulate the carbonate-bicarbonate solution therethrough, and where the output of the first passage is operationally coupled to the second gas-liquid contactor.

An air revitalization apparatus and method simultaneously removes carbon dioxide, water vapor, and heat from air and produces oxygen gas, hydrogen gas, and concentrated carbon dioxide gas, does not require an explosion proof enclosure, and includes a fan configured to blow air into a first gas-liquid contactor, an electrochemical cell including first through fourth passages configured to emit hydrogen gas, permit a flow of a carbonate-hydroxide solution, permit a flow of carbonate-bicarbonate solution, and emit oxygen gas, respectively, the first and fourth passages separated by at least three gas-impermeable membranes, and a second gas-liquid contactor, where the first gas-liquid contactor, second passage, and a first pump are configured to circulate the carbonate-hydroxide solution therethrough, where the second gas-liquid contactor, third passage, and a second pump are configured to circulate the carbonate-bicarbonate solution therethrough, and where the output of the first passage is operationally coupled to the second gas-liquid contactor.

An apparatus for controlling a level of oxygen in a closed environment from an oxygen supply having an oxygen sensor for detecting the level of oxygen in the closed environment. The apparatus has a plurality of relays in communication with the sensor. The apparatus has a valve in communication with the relays and the oxygen supply which is automatically opened with the relays without human interaction, monitoring and adjustment to release oxygen from the oxygen supply into the environment when the level of oxygen in the environment goes below a first predetermined level and which is automatically closed with the relays without human interaction, monitoring and adjustment to stop oxygen from being released from the oxygen supply into the environment when the level of oxygen in the environment goes above a second predetermined level. A method for controlling a level of oxygen in a closed environment from an oxygen supply. A refuge chamber.

The present invention relates to a fire evacuation room that provides a space installed indoors in a high-rise building such as an apartment block so as to provide a person who is unable to escape outside with a space in which to safely take refuge. The present invention can be installed indoors in an apartment or in a basement of a building as desired so as to enable a person unable to evacuate outside the building to safely evacuate, wherein a predetermined pressure differential can be constantly produced by suitably controlling the amount of air entering the evacuation space and the amountof air leaving the evacuation space, thereby compensating for the occurrence of leaks inside the evacuation space by damage due to falling objects and the like, and thus a fire evacuation room can beprovided that completely mitigates a shortage of air for breathing. Furthermore, the present invention can provide a fire evacuation room that can improve the overall efficiency of the system for airprovision by unified operation of the air supply for each fire evacuation room installed on each storey of a building by connecting the various air inlet pipes to pipes of the ventilation system of the building or to separate pipes of the blower equipment inside the building. In addition, an air forced discharge fan which is installed in the interior wall surface inside the evacuation space is linked in operation to opening and closing of a door so as to actuate the air forced discharge fan, so as to be able to forcibly discharge air inside the evacuation space when the door is open and consequently, the fire evacuation space is able to block the entry of smoke or heat to the inside from the outside. In addition, the present invention provides a fire evacuation room wherein a branch pipe is formed on one side of an air intake pipe through which air flows into the inside of the evacuation room main body, and a filter device capable of purifying toxic gas such as smoke, in addition to oxygen generation apparatus that generates oxygen, is installed on the branch pipe so as to block the entry of external toxic gas while simultaneously supplying air to the inside of the evacuation roommain body for evacuees to breathe, or by operating an air storage tank by utilizing the frame space of the main body of the evacuation room, so as to implement a new system that supplies air into theinside of the evacuation room main body for evacuees to breathe, thereby completely eliminating such problems as toxic gas flowing inside the fire evacuation room and protecting the safety of evacueesto the maximum.

A near ceiling mounted NBC filtration system of collective protection shelters comprising a filter unit, a blower, and an air exchange backup unit [20] (FIG. 5). The air exchange backup unit [20] comprising: a plurality of hinged segments [22a, b, c] serially linked to each other to form a foldable arm. The hinged segments [22a, b, c] are configured for transmission of rotational motion between each other. At least one of the hinged segments comprises at least one stage of a first speed increasing transmission. A first end [24] of the air exchange backup unit is swiveably attached to an electric motor [42] driving a blower [40]. And a second end [26] of the air exchange backup unit carries a detachable hand crank [28]. Manual rotation of the hand crank [28] rotates a shaft of the electric motor [42] at substantially a rated speed of the electric motor. The second end [26] of the air exchange backup unit is firmly attachable to a wall of the protection shelter at a convenient position for manual cranking of the hand crank [28]. The air exchange backup unit [20] is selectively folded up at normal times.

The present invention relates a refuge used in underground mines, and more particularly to a type of isolated refuge cabin used in underground mines, including the supporting airbag (1), the body shell (2) equipped outside the supporting air bag (1), a breathable air supplier (4) and an air inflation device (3); the air outlet (5) of the air inflation device (3) is linked with an air outlet (7) of the supporting air bag (1) through an air supply passage (6); the air inlet (8) of the breathable air supplier (4) is connected to the interior cavity of the body shell (2) through an air intake passage (9); the air outlet (10) of the breathable air supplier (4) is linked with the lower part of the interior cavity of the body shell (2) through the air outlet passage (11); the breathable air supplier (4) includes a shell (12), the oxygen generating agent (13) equipped inside the shell (12); the emergency exit (14) is installed on the body shell (2). The present invention provides an isolated refuge cabin of a simple structure, which can be operated safely and easily to effectively separate the exterior environment of the mining accident areas and provide conditions for survival for human beings involved in the mine accidents.

A protection cell having an upper wall and a lower wall spaced with respect to each other through a plurality of side walls integrally connected to each other, to form an open box-like container with an entrance opening. The container defines inside a shelter space arranged to accommodate a user. In particular, the container is produced as a single block that reproduces the open box-like container. The anti-seismic cell has a movable wall portion mounted slidingly on the box-like container, by means of a sliding cooperating element, in particular a plane sliding board that slidingly engages between at least two slide paths, which are arranged at opposite sides with respect to each other. The plane sliding boards allows movable wall portion to move from an open configuration to a closed configuration, where the movable wall portion blocks the opening defining the protection cell.

A floor-space saving NBC filtration system for collective protection shelters with NBC filter unit and means for changing the NBC filtration system state between a ventilation mode, effective during normal times or conventional hazard, and a NBC protection mode, effective during NBC hazard. The NBC filtration system is contained in a space out of a comfortable reach of the shelter occupants thus saving usable floor-space. The means for changing the NBC filtration system state is operated from a location within the comfortable reach of the shelter occupants. The NBC filter unit inlet and outlet are located at close proximity to each other, a pre-filter outlet is located in proximity to the NBC filter unit inlet and outlet with a changeover valve, serving as means for changing the NBC filtration system state, located there between. Resulting in simple operation and space saving by the changeover valve replacing prior art space consuming flexible pipes.

The invention belongs to the field of ventilation equipment, in particular to an easy-to-install ventilation equipment for civil air defense projects, aiming at the troublesome installation of the existing ventilation equipment when ventilating civil air defense projects, and it is generally located underground, which is prone to damage and is inconvenient For the problem of maintenance, the following scheme is proposed, which includes an air duct, a positioning ring is slidably connected in the air duct, a fixing rod is fixedly installed on the inner wall of the positioning ring, a motor is fixedly installed on one side of the fixing rod, and a motor is fixedly installed on the output shaft of the motor. A first rotating rod is fixedly installed, one end of the first rotating rod is fixedly installed with a fan blade, a positioning seat is fixedly installed on the top inner wall of the positioning ring, and a second rotating rod is rotatably connected to the positioning seat, and the second rotating rod is connected to the The first rotary rod transmission connection. The invention has the advantages of simple structure and convenient use, can ventilate civil air defense projects, and can also quickly disassemble and assemble the ventilating equipment, which is convenient for people to maintain.

This application relates to a civil air defense basement, which includes a basement body, an entrance is opened on the basement body, a manned air defense door is slid on the inner side wall of the basement body, and a driving mechanism for driving the air defense door to move is arranged on the basement body, the driving mechanism includes a first chain Wheel, drive motor, second sprocket, locking assembly; the first sprocket is set on the basement body for rotation, the drive motor is set on the basement body, the second sprocket is set on the output shaft of the drive motor and connected with the first sprocket through the chain The sprocket is connected, the air defense door is connected with the chain, and the locking assembly is arranged on the basement body to fix the chain. This application drives the civil defense door to move by driving the motor to open or close the civil defense door. After the movement is completed, close the locking assembly to fix the position of the civil defense door, so there is no need to manually turn the civil defense door, which saves time when opening or closing the civil defense door save effort.

An apparatus for controlling a level of oxygen in a closed environment from an oxygen supply having an oxygen sensor for detecting the level of oxygen in the closed environment. The apparatus has a plurality of relays in communication with the sensor. The apparatus has a valve in communication with the relays and the oxygen supply which is automatically opened with the relays without human interaction, monitoring and adjustment to release oxygen from the oxygen supply into the environment when the level of oxygen in the environment goes below a first predetermined level and which is automatically closed with the relays without human interaction, monitoring and adjustment to stop oxygen from being released from the oxygen supply into the environment when the level of oxygen in the environment goes above a second predetermined level. A method for controlling a level of oxygen in a closed environment from an oxygen supply. A refuge chamber.

Many people die each year from smoke inhalation due to residential fires. An enclosed space that provides clean and breathable air to people can save many lives when there is a fire and people are unable to escape. The device can be placed in a small and easily accessible space in a dwelling. The device recirculates and purifies air so that people can breathe while they wait for emergency responders.