Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Masamichi Hashida

Akiko Yuasa

Kazutaka Uekado

Tomoki Masuda

Tomohisa Tenra

Hidetomo Nagahara

Naoki Yamamoto

Shinya Kojima

Makoto Nakano

Yuuji Nakabayashi

Hidetaka Sugaya

Risa Taniguchi

Kazuo Hashimoto

Masahiro Koshiyama

Asaaki Yasuda

The present disclosure provides an ultrasonic transceiver capable of stably measuring a fluid of high temperature and high humidity for a long period, and provides an ultrasonic flowmeter, an ultrasonic flow velocimeter, and an ultrasonic densitometer each including the ultrasonic transceiver. An ultrasonic transceiver () comprises a piezoelectric body () and an acoustic matching body () disposed in one face of the piezoelectric body (), wherein the acoustic matching body () includes: a top plate, a bottom plate, and a side wall that define a closed space; and a perpendicular partition wall formed substantially perpendicular to the bottom plate and adhering to the top plate and the bottom plate, thereby dividing a closed space.

Ultrasonic transceiver, ultrasonic flowmeter, ultrasonic flow velocimeter, ultrasonic densitometer, and manufacturing method

An acoustic matching layer includes a base material having a plate-shaped member made of a metal, a ceramic, or glass. Depressed portions are partially provided in a vibration surface of the base material toward a joining surface of the base material that is in a propagation direction of a sound wave.

Acoustic matching layer

A gas-adsorbing device () includes: a container (); a gas adsorbent () configured to be disposed inside the container () so as to adsorb a gas; and an aeration member () having a predetermined aeration rate. The gas adsorbent () is disposed in a space formed by the container () and the aeration member (). Further, the space is configured to be completely enclosed by the container () and the aeration member (). In this configuration, it is possible to attain a gas-adsorbing device in which it is possible to reduce consumption of the gas adsorbent due to contact with air, even when the gas-adsorbing device is handled in air.

Gas-adsorbing device and evacuated insulating material using same

Vacuum insulator includes core member and jacket which covers core member. Jacket is decompressed its interior and core member includes a glass-fiber laminated unit. The glass fiber is formed of toughened glass-fiber which is low brittle and its fiber strength is toughened. This structure allows improving the heat insulating performance as well as lowering the material cost of vacuum insulator.

Vacuum heat insulator and testing method for the glass fiber laminate to be used in the insulator

Provided is a gas adsorbing device that allows a gas adsorbent to sufficiently exert its gas adsorption capacity even if the gas adsorbent absorbs a gas that contains moisture. A gas adsorbing device () includes: a gas adsorbing member () including a container () with an opening, a gas adsorbent () housed in the container (), and a sealing member () sealing the opening; a moisture adsorbent (); and an outer package () whose inside is decompressed, the outer package () housing the gas adsorbing member () and the moisture adsorbent (). The gas adsorbing member () and the moisture adsorbent () are arranged inside the outer package (), such that an end portion of the gas adsorbing member () in its longitudinal direction and an end portion of the moisture adsorbent () in its longitudinal direction are adjacent to each other.

Gas adsorbing device and hollow body housing the same

A gas adsorbing device () according to the present invention includes a gas adsorbing material () that adsorbs at least nitrogen and a housing container () that has a long, thin, flat, tubular shape and is made of metal and in which both sides of a housing portion () configured to house the gas adsorbing material () under reduced pressure are sealed. A contact portion () where opposing inner surfaces of the housing container () are in close contact with each other is located between at least one of seal portions (and) of the housing container () and the housing portion ().

Gas adsorbing device and vacuum insulation panel provided with same

A gas-adsorbing member is charged in low gas-permeable container () through its opening portion, wherein low gas-permeable container () is constituted by a hollow cylindrical metal member which is opened at its one end and is sealed at its other end and, also, has body portion () extending from the one end to the other end thereof such that the length of the body portion is equal to or larger than the maximum width of the end portions. Then, a sealing member is installed within the opening portion and near the opening portion. Then, the sealing member is molten by being heated. Thereafter, the sealing member within the opening portion is cooled to be solidified, thereby attaining sealing of the opening portion. Thus, it is possible to provide a gas-adsorbing-device fabricating method capable of suppressing degradations of the gas-adsorbing member and capable of reducing the fabrication costs.

Fabrication method for gas-adsorbing device, gas-adsorbing device, and method of using the same

Includes gas adsorption device () in which gas adsorbent () is decompression-sealed by first package () with poor gas permeability, and second package () with poor gas permeability. Second package () is at least partially flexible. Air that is a gas that gas adsorbent () can adsorb is filled between gas adsorption device () and second package (). In this configuration, gas adsorbent () adsorbs air when first package () is damaged, and thus a pressure inside second package () reduces. Due to this pressure reduction, the shape or dimension of second package () changes. Any damage to first package (), i.e., any degradation in adsorption capacity of gas adsorption device (), can thus be determined by confirming this change.

Gas-adsorption device structure and method for using same

A jacket material into which a gas adsorbing device and core material are inserted is decompressed in a vacuum chamber, the opening is sealed, and then the jacket material is exposed to the atmosphere. In the atmospheric pressure, a pressure of about 1 atm which is equivalent to the pressure difference between the inside and outside is applied to the jacket material of the heat insulator. The jacket material is made of a plastic laminated film and is deformed by pressure. A protruding portion is plunged into a container to drill through holes, and a gas adsorbent in the container communicates with the inside of the jacket material. Thus, both during holding and in applying to the vacuum heat insulator, the gas adsorbent can be applied to the vacuum heat insulator without degradation, and the high degree of vacuum can be kept for a long time.

Gas adsorbing device, vacuum heat insulator making use of gas adsorbing device and process for producing vacuum heat insulator

A vacuum heat insulation material has a covering material which is a lamination body including a sealant layer, a metal foil layer, a first plastic film layer, and a second plastic film layer which are laminated in this order from inside to outside via adhesive layers. When a foreign body is pierced into the vacuum heat insulation material, the propagation of breakage caused by the piercing is blocked somewhere inside the lamination body, thereby preventing the formation of through-pinholes. This results in the provision of a high-quality vacuum heat insulation material with excellent long-term insulation performance by using a covering material excellent in gas barrier properties and pinhole resistance to the piercing of minute foreign bodies.

Growing community of inventors

Shiga, Japan

Masamichi Hashida