Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Appliances Refrigeration Devices Singapore

Sumitomo Chemical Company, Limited

Panasonic Corporation

Hiroyuki Kawano

Hideo Hirano

Hideto Oka

Takashi Morimoto

Noboru Iida

Ko Inagaki

Yoshiyuki Futagami

Atsushi Sakuda

Osamu Aiba

Yoshinori Ishida

Yusuke Imai

Takeshi Hashimoto

Masanori Kobayashi

Shigeru Muramatsu

Sadayuki Yamada

Masahiro Tsubokawa

Daisuke Takahata

Kenji Kinjo

Tatsuya Nakamoto

Shiho Furuya

Akinori Fukuda

Tetsuo Harada

Kazuyuki Ueda

Naonobu Nishiguchi

Kazuhide Nakada

Takeshi Hiratsuka

The present invention includes: an electric component; a compression component driven by the electric component; and a sealed container accommodating the electric component and the compression component. The compression component includes: a shaft part rotated by the electric component; and a bearing part slidingly contacting the shaft part. A film having hardness equal to or more than hardness of a sliding surface of the bearing part is provided on a sliding surface of the shaft part. The sliding surface of the bearing part includes a curved-surface portion having an inner diameter that continuously increases, or the sliding surface of the shaft part includes a curved-surface portion having an outer diameter that continuously decreases.

Refrigerant compressor and freezer including same

Sealed container () houses electric unit () equipped with stator () and a rotor (), and compression unit () disposed above electric unit (). Compression unit () includes shaft () that includes main shaft portion () and eccentric shaft portion (), and cylinder block (). Compression unit () further includes connection portion () that connects piston () reciprocatively inserted into cylinder () and eccentric shaft portion (), and a thrust bearing that supports a load of shaft () in a vertical direction. The thrust bearing includes an upper race in contact with a flange portion of shaft (), a lower race in contact with a thrust surface of cylinder block (), and a rolling element. An overall height of sealed container () is sized not to exceed a length six times larger than a diameter of piston ().

Sealed compressor and freezer device or refrigerator equipped with same

A stator of an outer-rotor type motor is fixed to a stator fixing member, and the stator fixing member is fixed to a member (cylinder block) of a compression element, which has a main bearing. Further, an auxiliary bearing is configured to be separate from the stator fixing member and is fixed to the stator fixing member. In this manner, it is possible to fix the stator fixing member to the member of the compression element in a state in which an even clearance is formed between an inner circumference of a rotor and an outer circumference of the stator, and it is possible to fix the auxiliary bearing to the stator fixing member in a state in which the auxiliary bearing is reliably coaxial to the main bearing.

Refrigeration compressor having an outer-rotor type motor with the stator fixed to a member fixed to a cylinder block

A hermetic compressor includes an electric motor element driving a compression element that includes a crankshaft including a main shaft, an eccentric shaft, and a flange, a cylinder block having a cylinder bore, and a piston configured to reciprocate in the cylinder bore. The crankshaft further includes a communicating oil supply passage provided in the flange, a main shaft oil supply passage, and an eccentric shaft oil supply passage.

Hermetic compressor and refrigeration device

Provided are a fly attractant composition containing a ligninsulfonate as an active ingredient, and a fly expellant composition containing 5 to 20% by weight of a ligninsulfonate and at least 0.1% by weight but less than 5% by weight of an insecticidal active ingredient.

Fly attractant composition and fly attracting method, as well as fly expellant composition and fly expelling method

Micropores penetrating a vibration platein a thickness direction thereof are formed, in which the vibration plateatomizes a solution by vibration of a piezoelectric vibratorthat generates ultrasonic vibration when current is applied thereto. In addition, the spraying time and the spraying interval time are controlled by turning on or off the current applied to the piezoelectric vibrator, such that a value of [50% particle diameter of spray particles in cumulative volume distribution]&#xd7;([spraying time]/[spraying interval time]) becomes 0.2 to 2.5 &#x3bc;m.

Ultrasonic atomizing device and pest control method

According to a compressor of the present invention, the compressor further comprises an oil separating mechanismwhich separates oil from the refrigerant gas discharged from the compressing mechanism, the oil separating mechanismincludes a cylindrical spacein which the refrigerant gas orbits, an inflow portionfor flowing the refrigerant gas discharged from the compressing mechanisminto the cylindrical space, a sending-out portfor sending out, from the cylindrical spaceto the one container space, the refrigerant gas from which the oil is separated, and an exhaust portfor discharging the separated oil and a portion of the refrigerant gas from the cylindrical space, and a center of the sending-out portis deviated in a direction opposite from the inflow portionfrom a center axis of the cylindrical space

Compressor

According to a compressor of the present invention, the compressor further comprises an oil separating mechanismwhich separates oil from the refrigerant gas discharged from the compressing mechanism, the oil separating mechanismincludes a cylindrical spacein which the refrigerant gas orbits, an inflow portionfor flowing the refrigerant gas discharged from the compressing mechanisminto the cylindrical space, a sending-out portfor sending out, from the cylindrical spaceto the one container space, the refrigerant gas from which the oil is separated, and an exhaust portfor discharging the separated oil from the cylindrical spaceinto the other container space. According to this configuration, efficiency of the electric motoris enhanced, volumetric efficiency is enhanced, and low oil circulation is realized.

Compressor with oil separating mechanism

A scroll compressor having an extended life due to the support structure for the orbiting scroll, even when using a chlorine-free substitution refrigerant. The support structure includes an Oldham ring for supporting an orbiting scroll so as to allow the orbiting scroll more orbiting motion without rotating about a fixing scroll. The Oldham ring is formed of a different material from both a fixing member and the orbiting scroll. Hence, if a boundary lubrication state occurs in mutually sliding parts, only sliding between different materials occurs, and mutual adhesion in the portion of the boundary lubrication state is avoided. As a result, the shortening of the life due to the wearing of the support structure of the orbiting scroll is prevented.

Scroll compressor and method for manufacturing an oldham ring therefor

A scroll compressor includes a fixed scroll and an orbiting scroll which define therebetween a plurality of compression chambers for compressing fluid introduced via a suction port. The orbiting scroll has a base plate and a shaft portion extending from the base plate toward a crankshaft rotatably supported by a support member. A seal member is disposed between the base plate and the support member to define an inner region and an outer region. The inner region surrounds the shaft portion, while the outer region includes therein a rotation preventing member interposed between the base plate of the orbiting scroll and the support member. The inner region communicates with the outer region via an oil-feed passage formed through the orbiting scroll. The oil-feed passage includes therein a restrictor and opens in the neighborhood of an upper sliding portion between the rotation preventing member and the support member. Thus, lubricating oil supplied to the inner region is fed to the neighborhood of the upper sliding portion via the oil-feed passage for lubrication thereof. The lubricating oil collects downward due to the gravity to achieve lubrication of a lower sliding portion between the rotation preventing member and the support member.

Scroll compressor having lubrication of the rotation preventing member

An orbiting scroll is engaged to and moved orbitally in relation to a fixed scroll at variable speeds. An offset surface is provided in at least one of the wraps of the fixed scroll and/or the orbiting scroll, by which a space S is created in one of the compression chambers formed between the fixed scroll and the orbiting scroll, which is thereby unsealed and opened to the inlet port side. The offset surface has a length from a position in the spiral length which satisfies the required compression ratio of one of the compression chambers in a low speed operation to the end of the spiral. An injection port is positioned such as to open to an unsealed area of this compression chamber, and gas injection shutoff and resumption is controlled through this injection port as appropriate to the situation.

Scroll type compressor

To present a compressor for refrigerating machine excellent in lubricating effect, small in wear of contact portions, outstanding in refrigerating performance, and high in reliability, in a compressor using HFC refrigerant not containing chlorine atom. A lubricating oil containing HFC refrigerant, an ester compound oil as principal component, and a phosphoric acid triester as extreme pressure additive is used. Moreover it is composed so that the surface hardness of a vane for composing the contact portions of the compressing mechanism and the surface hardness of the piston may have a difference of 10 or more in Rockwell hardness (HRC). As the extreme pressure additive, also, phosphite, phosphoric acid diester or phosphoric acid monoester can be used. As the principal component of lubricating oil, ether compound oil or carbonate compound oil is also usable.

Growing community of inventors

Shiga, Japan

Hiroyuki Kawano