An engine breather filter assembly for monitoring an internal combustion comprises: a filter cavity configured to accommodate a breather filter element; a processor; and a sensor module configured to sense a characteristic of the internal combustion engine and output data representative of the sensed characteristic to the processor. The engine breather filter assembly is configured to provide a housing for the processor. The processor is configured to determine a value representative of the firing frequency of the internal combustion engine based on the output data.

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.

A clogged filter detector is provided. In some embodiments, the clogged filter detector may comprise a transmitter, a sensor, and a transmitter resistor array configured to modify the output strength of the transmitter. In some embodiments, the clogged filter detector may comprise a transmitter, a sensor, and a sensor resistor array to configured to adjust the strength of the signal output by the sensor. The clogged filter detector may also include one or more processor configured to adjust the strength of a beam output by the transmitter based on a saturation level.

An air purifier (1) with mount for a vehicle, wherein the air purifier (1) consists of a fan in a portable housing (2, 4, 5), which has at least one air intake region (45) for sucking air into the housing (2, 4, 5) and at least one air discharge region (50) for blowing the air out of the housing (2, 4, 5), wherein a cleaned discharge air flow (51) flows out into the passenger compartment, wherein the mount consists of an adapter plate (6) that can be detachably fixed in different positions in the interior of the motor vehicle, and wherein the air purifier (1) is rotatably mounted in the adapter plate (6).

A filter system with self-cleaning function and a clothes dryer using the filter system, wherein the filter system comprises a shell 5 with an air inlet 12 and an air outlet 13, a filter system screen 7, a cleaning unit 3, a driving device and a lint collection drawer 8, wherein the driving device includes a drive motor 1 disposed on the outer wall of the shell 5 and a screw rod 2 disposed inside the shell 5, the output shaft of the drive motor 1 passes through the small hole I 14 opened on the shell 5 and extends inside the shell; one end of the screw rod 2 is engaged with the output shaft of the drive motor 1 and the other end of the screw rod 2 is mounted inside the small hole II 15 opened on the wall of the shell 5 opposite to the output shaft of the drive motor. The cleaning unit 3 is screwed on the screw rod 2 and driven by the screw rod 2 to move back and forth and the lower end of the cleaning unit 3 is in contact with the filter system screen 7, and the automatic self-cleaning lint function could be achieved. For the clothes dryer, the overall structure becomes more compact and reliable by improving structure of the filter system, and the lint collection efficiency and also drying efficiency are increased.

A personal air purification device includes at least one conduit assembly connected to a mounting assembly and a power supply arrangement. The at least one conduit assembly includes a conduit extending between an air inlet end and air outlet end, a filter and a fan. The filter is connected to the conduit and configured to remove contaminants from the air passing the through the conduit. The fan is connected to the conduit and configured to drive air flow through the filter and the conduit. The mounting assembly is configured to hold the conduit about the head of a wearer with the air inlet end positioned to generate a high pressure area proximate to a nose and mouth thereof. The power supply arrangement is configured to supply electrical power to the fan.

A test device is provided for an air filter comprised in an air channel of a portable air purifier. The test device includes a sensor inlet and a sensor outlet, at least the sensor inlet being connectable to the air channel of the portable air purifier. The test device further includes a filter condition sensor, positioned between the sensor inlet and the sensor outlet, and configured to analyse a condition of an air filter comprised in the air channel.

The present invention relates to an air purifier in which vertical rotation and horizontal rotation are performed simultaneously and independently and which has a stable structure.

A wafer transporting method includes following operations. A plurality of wafers are received in a semiconductor container attached to a mobile vehicle. An air processing system is coupled to a wall of the semiconductor container. The air processing system includes an inlet valve, an outlet valve, a pump between the inlet valve and the outlet valve, and a desiccant coupled to the pump. The semiconductor container is moved. The pump of the air processing system is turned on to extract air from inside the semiconductor container into the air processing system through the inlet valve. Humidity of the air is reduced when the air passes through the desiccant of the air processing system. The air is returned back to the semiconductor container through the outlet valve.

An outdoor air purifier includes a housing including at least one housing cover part, a mounting base, at least one flow inlet for outdoor air to be purified, at least one flow outlet for cleaned air, and an inner clean air space, a fan having a standing rotational axis and arranged within the housing, wherein the at least one flow inlet is arranged radially with regards to the standing rotational axis, and the at least one flow outlet is arranged axially with regards to the standing rotational axis, and at least one filter element at least partially surrounding the inner clean air space. The fan is displaced axially from the mounting base and is in fluid connection with the inner clean air space. The at least one filter element extends essentially parallel to the standing rotational axis.