Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Yukako Akeyama

Yasuaki Tanimoto

Chie Hirai

Yoshihide Hirai

Keisuke Tsunetsugu

Hiroto Nakama

A gas adsorbent includes copper-exchanged ZSM-5 zeolite, and the crystallinity of the copper-exchanged ZSM-5 zeolite is set to at least 40% and up to 80%.

Gas adsorbent and vacuum thermal insulation material including gas adsorbent

A vacuum heat insulator according to the present invention includes a core molded to be plate-shaped with the use of a binding agent. The vacuum heat insulator assumes any one of the following configurations. A) The core is formed by curing a fiber aggregate by means of a binding agent. The fibers have an average fiber diameter of at least 0.1 &#x3bc;m but at most 10 &#x3bc;m, and voids defined by fibers have a void diameter of at most 40 &#x3bc;m. The core has a percentage of the voids of at least 80%. B) The binding agent is varied in concentration in a through-thickness direction of the core. C) A cured layer solidified by the binding agent is formed on at least one side surface of the core. D) The core contains fibers having a length of at most 100 &#x3bc;m. The fibers are oriented perpendicular to a direction of heat transmission. Such vacuum heat insulator is excellent in adiabatic property. Refrigerators, to which such a vacuum heat insulator is applied, are made small in size, or have a large inner volume, or contribute to energy saving.

Vacuum heat insulator, method of manufacturing the same, and refrigerator using the same

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Shiga, Japan

Yukako Akeyama