A self-insulating air delivery and recirculation system maintains a desired air temperature of the conditioned air supplied thereinto for delivery to an aircraft. The system uses insulating airflow layers; a parallel layer and a counterflow layer. A starting section connects to a PCA unit and delivers conditioned air therefrom to an interior supply hose. The starting section supplies conditioned insulating air to an interior insulating hose that is annularly outward of the supply hose and in which air flows parallel to airflow in the supply hose. A reversing connector indirectly connects the supply hose to the aircraft and reverses the flow of air from the interior insulating hose to flow back toward the PCA unit in an exterior counterflow hose that is annularly outward of the interior insulating hose and connects at its far end to provide intake airflow to the PCA unit.

A mobile gas detection and cleaning device including a main body, a purification module, a gas guider, a gas detection module a controlling module, a driving movement module and a position determining unit is disclosed. The gas detection module allows a user to carry for detecting gas in the environment around the user to obtain a gas detection datum, and a target position is wirelessly transmitted. The controller module receives the gas detection datum sent from the gas detection module and enables or disables the gas guider according to the gas detection datum. The controller module receives the target position wirelessly sent from the gas detection module for estimating a target track from a remaining distance relative to the target position and the main body. The driving movement module is controlled to move the main body along the target track to reach an area nearby the user for purifying the gas.

A fire evacuation room includes a main body having an entrance and an evacuation space, a door installed in the entrance, an air intake pipe connected to a rear portion of a ceiling of the main body to induce air entering the evacuation space, an air discharge pipe connected to a front portion of the ceiling to induce air exiting the evacuation space, an air discharge fan installed on an inner rear wall of the main body while facing the entrance and turned ON/OFF in conjunction with an opening/closing of the door, a lamp installed on the ceiling, a control box installed inside the main body, a sub-air intake pipe branching from one side of the air intake pipe, and an oxygen generator connected to the sub-air intake pipe and configured to receive the air and generate oxygen, the oxygen being supplied into the main body.

A portable heating, ventilation, and air conditioning (HVAC) unit includes a housing, a plate, and a duct assembly. The housing defines a first airflow exit and a second airflow exit. The first airflow exit is separated from the second airflow exit by a portion of the housing. The plate is configured to cover the first airflow exit. The duct assembly is configured to cover the second airflow exit. The plate is configured to be disassembled from the housing and reassembled to cover the second airflow exit, and the duct assembly is configured to be disassembled from the housing and reassembled to cover the first airflow exit.

A diffuser head is adapted for local application of purified air to a target. The diffuser has a main body with an air inlet surface, that has a first area, towards an air outlet surface, that has a second area that is greater than the first area. The main body has a plurality of continuous expanding air ducts extending lengthwise between the air inlet surface and the air outlet surface, wherein an air duct has a third cross-sectional area that increases continuously from an air duct inlet at said air inlet surface towards an air duct outlet at said air outlet surface. If a filter provided at the air inlet surface, the diffuser head can be used in an air cleaning apparatus that has a pump for intake of air from the surrounding environment.

A respiratory droplet suction device includes an air inlet end and an exhaust end. A plurality of filtering devices are arranged between the air inlet end and the exhaust end. The filtering device is provided with a bacteria filtering screen for adsorbing bacteria and an ultraviolet sterilization lamp for inactivating the bacteria. The filtering device includes a first side wall and a second side wall. The first side wall is connected to the air inlet end, and the second side wall is connected to the exhaust end. The air entering from the first side wall is filtered by the bacteria filtering screen and discharged through the second side wall. The ultraviolet sterilization lamp is arranged corresponding to the bacteria filtering screen. A respiratory droplet filtering apparatus includes the respiratory droplet suction device, and a respiratory droplet electric suction system includes the respiratory droplet filtering apparatus are further provided.

A method for controlling a fan of a dehumidifier includes performing a first step of obtaining an ambient temperature, an exhaust temperature, and a delta temperature that is a difference between the ambient temperature and the exhaust temperature. The method further include determining, after performing the first step, whether the delta temperature is within a delta temperature range. If the delta temperature is within the delta temperature range, the method proceeds back to the first step. If the delta temperature is not within the delta temperature range, the method performs a second step of determining an adjusted fan speed using the delta temperature. The method further includes performing, after performing the second step, a third step of setting the fan speed to the determined adjusted fan speed.

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 amount of 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 be provided 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 air provision by unified operation of the air supply for each fire evacuation room installed on each story of a building by connecting the various air intake 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 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 generator 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 room main body for evacuees to breathe, or by operating an air storage tank by utilizing the frame space of the evacuation room main body, so as to implement a new system that supplies air into the inside 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 evacuees to the maximum.

A decontamination appliance includes a control cabinet having a control circuit and a decontamination cabinet. The appliance also includes an ozone generator that supplies ozone to the decontamination cabinet. The ozone generator is controlled by the control circuit. A hydrogen peroxide vaporizer is also controlled by the control circuit. A circulation fan circulates a stream of air through the decontamination cabinet. The circulation fan circulates ozone generated from the ozone generator and hydrogen peroxide paper generated from the hydrogen peroxide vaporizer. The decontamination cabinet further has includes trays mounted on a tray rack, and the appliance is mounted on wheels for portable use. The decontamination appliance also preferably includes a humidifier.

A portable energy generation and humidity control system includes an engine and a humidity control system within a portable frame. The engine includes two containers in communication through a connecting arm having a central hollow bore. A volume of a low boiling point liquid is disposed in the bottom container, and a wire coil extends along the connecting arm. A buoyant permanent magnet is disposed in the central hollow bore. An active heat exchanger is capable of transferring heat to and removing heat from the bottom container. The active heat exchanger includes at least one internal heat exchanger portion and at least one external heat exchanger portion in communication with the internal heat exchanger portion. A humidity control system is supported within the portable frame and is in communication with the engine. The humidity control system and the engine maintain a desired humidity level in the ambient environment.