Matsushita Refrigeration Company

Samsung Electronics Co., Ltd.

Manabu Motegi

Akihiko Kubota

Masahiko Osaka

Hidetoshi Nishihara

Kazuhito Noguchi

Takeshi Kojima

Toshihiko Ota

Masahiro Kakutani

Hiroki Awashima

Kenji Takeuchi

Makoto Kobayashi

Ichiro Kita

Tomoharu Iwamoto

Ryota Aoki

Isamu Takatsuki

Tsuruga Toshimitsu

Maiko Nakazato

The present invention provides precise temperature control of a cooling chamber and comprises: a cooling chamber; a refrigeration circuit having a compressor, a condenser installed at the outlet side of the compressor, an evaporator, installed between the outlet side of the condenser and the inlet side of the compressor, for cooling the cooling chamber, and a decompression means installed at the inlet side of the evaporator; and a refrigerant control unit which has a refrigerant control valve installed between the condenser and the evaporator, and which adjusts the refrigerant flow rate that flows into the evaporator by controlling the opening/closing time of the refrigerant control valve.

Cooling device

A vacuum insulation material having bending formability while restraining reduction in a gas barrier property of a sheathing material. The vacuum insulation material includes a pouch-shaped sheathing material having a gas barrier property and a core received in the sheathing material as a spacer, the vacuum insulation material having a bendable region, a first surface, and a second surface opposite to the first surface, wherein at least one of the first and second surfaces in the bendable region is provided with a plurality of grooves extending at intervals, the grooves include a pair of outer grooves formed in the bendable region and a plurality of inner grooves formed inside the outer grooves, and an interval between each outer groove and a corresponding one of the inner grooves adjacent to each outer groove is greater than an interval between the inner grooves.

Vacuum insulation material, insulation case unit, and refrigerator

In a hermetic compressor in a freezing refrigerating system or an air-conditioning system such as a refrigerator or a showcase, a construction is disclosed for intending to provide a low-noise hermetic compressor by effectively attenuating a pressure pulsation having occurred in a compression chamber with a suction muffler. By this construction, since a muffler coverhas a planar simple shape, the deformation upon molding becomes little and it can come into fully close contact with a muffler main body. Therefore, the pressure pulsation hardly leaks through the connecting portion between the muffler main bodyand the muffler cover. The full silencing effect that the suction mufflerhas is obtained and thereby noise can be reduced more effectively.

Hermetic compressor and freezing air-conditioning system

This invention relates to a hermetic compressor used on a refrigerant cycle such as a refrigerator, and discloses a low noise compressor designed to attenuate a resonance sound in a compression chamber and intake pressure pulsing more operatively at a position adjacent to their sources, which intake pressure pulsing occurs at an intake valve port. In the compressor, a resonance spaceis provided adjacent to the intake valve portthat is closer in distance to a noise source. As a result, noise can be reduced more operatively than muffling functions of an intake mufflerdo. In addition, although acoustic characteristics of the intake muffleramplify noises having specific frequencies, such noises can be attenuated before being amplified.

Hermetic compressor with an improved cylinder head-suction muffler assembly

A sealed electric compressor for use in, for example, an electric refrigerator, generates a little noise and can feed any moving part of its compressing element with refrigerator lubricant. An oil pickup tube is joined by insertion to the lowermost end of a crank shaft and includes a first centrifugal pumping portion and a second centrifugal pumping portion provided continuously and arranged at a smaller angle than that of the first centrifugal pumping portion. The second centrifugal pumping portion arranged at a smaller angle can spin in a pool of the refrigerator lubricant.

Closed type electric compressor

In a hermetic compressor for use on an air-conditioning unit as well as a refrigerating unit such as a refrigerator and a showcase, there is disclosed a constitution designed to provide a silently operated hermetic compressor that has an intake muffler readily assembled thereon. The hermetic compressor including a substantially disk-like elastic member disposed between the intake muffler at an outlet thereof and a cylinder head is provided, in which an outlet orifice of the intake muffler constantly remains pressed against an intake valve port through a gasket.

Closed compressor

A closed motor-driven compressor includes a compression component ( ) and an electric component ( ) for driving the compression component ( ), both of which are elastically supported within a closed vessel ( ). A suction muffler ( ) is mounted on the compression component ( ) and includes a plurality of elements ( ) assembled together and each made of synthetic resin. One of the plurality of elements ( ) has a guide rib ( ) integrally formed therewith that is tapered down toward an adjoining one of the plurality of elements ( ), thereby facilitating assembly of the two elements.

Suction muffler for a hermetic compressor

A hermetic motor-driven compressor is capable of decreasing both the resonance sound due to an oil feed pipe and the resonance sound due to a crankshaft generated when the oil feed pipe is rotated while being dipped in the refrigerating machine oil. Within a hermetically sealed enclosure, a compression component and a motor drive component are supported through an elastic support arrangement, and the compression component comprises a crankshaft adapted to be rotatively driven by the motor drive component through an eccentric portion and provided with a journal, a balance weight disposed at the eccentric portion and a coaxial oil feed pipe disposed in the balance weight so as to revolve coaxially with the journal, so that the stirring of the refrigerating machine oil can be suppressed.

Growing community of inventors

Koshigaya, Japan

Manabu Motegi