Daikin Industries, Ltd.

Nippon Muki Co., Ltd.

Hitoshi Niinuma

Makoto Kobayashi

Li Bao

Kunihiko Inui

Yoshiyuki Shibuya

Shinichi Chaen

Hideyuki Kiyotani

Taku Yamanaka

Shunji Kasai

Takashi Kimura

Seigo Yamamoto

Satoshi Hara

Jun Morita

Osamu Kitayama

Tatsumi Sakano

Chizuru Murakami

Junpei Yamamoto

Norikazu Shinya

Tomoyuki Hasegawa

Katsuhiro Ohno

Fumio Nakajima

Takayuki Hyoudou

Takuya Mimura

A refrigeration apparatus includes a refrigerant circuit having a heat exchanger, a housing that houses at least the heat exchanger and is provided with a suction port on an upstream side of the heat exchanger, and a filter attached to the suction port of the housing. The filter is configured to be held not to come into contact with the heat exchanger. When air containing oil mist flows to the heat exchanger via the filter, at least a part of an oil component in the air containing oil mist is trapped by the filter.

Refrigeration device and oil cooling device

A filtering medium includes first and second porous membranes mainly composed of fluororesin, and a plurality of air permeable supports to support the first and second membranes. The second membrane is disposed downstream of the first membrane. When air containing polyalphaolefin particles with a count median diameter of 0.25 &#x3bc;m is continuously passed through at a flow rate of 5.3 cm/sec and pressure loss is increased by 250 Pa, the first membrane has a dust retention amount larger than the second membrane. The filtering medium has a pressure loss of less than 200 Pa when air is passed through at a flow rate of 5.3 cm/sec. A collecting efficiency of NaCl particles with a particle diameter of 0.3 &#x3bc;m is 99.97% or more when air containing the NaCl particles is passed through at a flow rate of 5.3 cm/sec. The dust retention amount is 25 g/mor more.

Filtering medium for air filter, filter pack, air filter unit, and method for producing filtering medium for air filter

A mixed powder and a material for molding have polytetrafluoroethylene as a main component. Each includes polytetrafluoroethylene that can be fibrillated, a non-hot melt processable component that is not fibrillated, and a hot melt processable component with a melting point of lower than 320&#xb0; C. that is not fibrillated. The non-hot melt processable component that is not fibrillated is contained in a range of 20 to 40% by weight of the total weight. The hot melt processable component is contained at equal to or more than 0.1% by weight but less than 20% by weight of the total weight. A drawn porous body includes a plurality of fibrils, and a plurality of knotted portions that are connected to each other by the fibrils.

Mixed powder and material for molding having PTFE as main component, and drawn porous body

An embossed air filter filtration medium has at least one porous film and a plurality of air-permeable support materials supporting the at least one porous film. The least one porous film includes a fibril-formable polytetrafluoroethylene, a non-fibril-forming and non-hot-melt-processable component, and a non-fibril-forming and hot-melt-processable component having a melting point below 320&#xb0; C. Surfaces of both sides of the air filter filtration medium are formed by two air-permeable support materials of the air-permeable support materials. The air filter filtration medium has a plurality of embossed projections. The embossed air filter filtration medium may be part of a filter pack, which may be part of an air filter unit. The embossed air filter filtration medium is manufactured by laminating air-permeable support materials on the at least one porous film and embossing the air filter filtration medium to form the projections.

Embossed air filter filtration medium, filter pack, air filter unit, and method for manufacturing filtration medium for embossed air filter

A composition, a mixed powder and a material for molding have polytetrafluoroethylene as a main component. Each includes polytetrafluoroethylene that can be fibrillated, a non-hot melt processable component that is not fibrillated, and a hot melt processable component with a melting point of lower than 320&#xb0; C. that is not fibrillated. The hot melt processable component is contained at equal to or more than 0.1% by weight but less than 20% by weight of a total weight. A filtering medium for an air filter includes a porous membrane made of these components, and an air permeable support. The porous membrane is manufactured, by mixing these components, extruding the mixture, rolling and drawing.

Composition having PTFE as main component, mixed powder, material for molding, filtering medium for filter, air filter unit, and a method for manufacturing a porous membrane

A filter medium for an air filter collecting dust in an air flow has a principal collection layer including a porous polytetrafluoroethylene film. A surface of the filter medium is provided with a plurality of embossed projections. Preferably, a processed filter medium maintains a zigzag shape by pleating an unprocessed filter medium to create mountain folds and valley folds. Preferably, an air filter unit includes such a processed filter medium and a frame body holding the processed filter medium.

Filter medium for air filter and filter unit

The invention provides a filter pack of which the mass is not increased, and moreover, the effective filter medium area is not reduced, and of which the pressure drop is sufficiently low, and the strength is sufficiently high, and an air filter using this. A pleated air filter pack is configured in such a way that dot embossed projections are provided on front and rear surfaces of a filter medium made of a non-woven fabric, the filter medium is folded in zigzag shape along creases of pleats, and the opposing embossed projections are brought into contact with each other when the filter medium is folded, thus maintaining the intervals between the filter media.

Pleated air filter pack and air filter using same

A high-performance filter for an intake air for a gas turbine according to the present invention includes a low-efficiency filter media and a high-efficiency filter media superposed closely on each other in the named order from an upstream side in a direction of an air flow. Each of the filter media is formed with a filtering area of 20 to 35 m . The filter media having a filtration efficiency of 40 to 70% for particles having a particle size of 0.3 &mgr;m is disposed as a layer upstream in the air flow direction, and the filter media having a filtration efficiency of 90 to 99.99% for particles having a particle size of 0.3 &mgr;m is disposed as a downstream layer. In addition, a filter unit according to the present invention is made using the above filter, Thus, even when the filter unit is used for atmospheric dusts including a high concentration of dusts having a particle size of 0.3 to 0.5 &mgr;m, a life of 8,000 hours or more, and the deposition of the atmospheric dusts in an air compressor or the like in a conventional gas turbine plant can be alleviated, thereby preventing a reduction in power-generating output and ensuring that it is unnecessary over a long period of time to carry out the washing or cleaning of the air compressor and the like and the replacement of the filter. In addition, the filter unit can be placed in a reduced space.

High-performance filter for intake air for gas turbine, and filter unit using such filter for intake air for gas turbine

Growing community of inventors

Yuki, Japan

Hitoshi Niinuma