Daikin Industries, Ltd.

Toshiaki Yoshii

Hiroyuki Kuroiwa

Masanori Masuda

Kazuhiro Furusho

Mikio Kajiwara

Hiroshi Kitaura

Masahide Higuchi

Masanori Yanagisawa

Kouki Morimoto

Keiji Yoshimura

Satoshi Ishikawa

Kenji Matsuba

Masaki Nomura

Shusaku Ueda

Wakana Koike

A hermetic compressor is disposed with an annular motor stator, a motor rotor, a casing and plural spot joining portions. The motor rotor is disposed such that it may freely rotate in a space inside the motor stator. The casing includes a cylindrical portion. The cylindrical portion houses the motor stator and the motor rotor. The plural spot joining portions fix the motor stator to the cylindrical portion by spot joining in a state where a clearance is secured between the motor stator and the cylindrical portion.

Hermetic compressor with spot joining portions fixing a motor stator to a cylindrical portion of a casing where a clearance is secured therebetween

A compressor includes a compression mechanism, a motor coupled to the compression mechanism via a driving shaft, and a casing to accommodate the compression mechanism and the motor. The motor includes a stator, and a rotor disposed inside the stator and coupled to the driving shaft. The stator is spot-joined to the casing via a plurality of stator spot-joined portions at different positions along a circumferential direction about the driving shaft. Preferably, the stator spot-joined portions are disposed at different axial positions. Also, the stator spot-joined portions are preferably disposed at different circumferential positions from positions of compression mechanism-side spot-joined portions. When an accumulator is connected to the casing via a connection pipe, a straight line between any two of the plurality of stator spot-joined portions preferably crosses a vibration direction of a natural vibration mode of the accumulator.

Compressor

A porous bronze and a resin impregnated in pores of the porous bronze formed on a backing metal constitute a bearing At a surface to be brought into contact with a crank shaft porous bronze and resin are sparsely exposed. Ratio of area of exposure of porous bronze at the contact surface is at least 5% and at most 60%. Thus a bearing for a refrigerating compressor having high seizure resistance at the time of boundary lubrication and having small amount of wear caused by sliding as well as a refrigerating compressor employing the same can be obtained.

Bearing for refrigerating machine compressor and compressor

A plurality of compression chambers are formed between first and second spiral bodies,and,, and refrigerant discharge timing advancing means is provided for advancing the timing at which refrigerant is discharged from a first compression chamber,which is one of a pair of compression chambers located nearest to the center, relative to the refrigerant discharge timing of the second compression chamber,. The refrigerant discharge timing advancing means includes an extension,of the first spiral body,and an opening advancing portion,of a discharge port

Scroll fluid machinery

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Sakai, Japan

Toshiaki Yoshii