Abstract: The metallic sealed double container of the present invention includes an outer container, an inner container, an outer lid for the outer container, and an inner lid for the inner container, all of which being formed from thin metallic sheet. Connection holes are formed in the outer lid and the inner lid by burring, and both end parts of thin-walled pipes are respectively connected while inserted in the connection holes. The inner lid is joined to the inner container, and the outer lid is joined to the outer container, thereby constituting a metallic sealed double container in which the inner container is isolated in the outer container. As a result, the weight of the metallic sealed double container is reduced, the temperature in the inner container can be maintained over long periods of time, and the heat-insulating effect of the resulting sealed double container is high.

Abstract: The metallic sealed double container of the present invention includes an outer container, an inner container, an outer lid for the outer container, and an inner lid for the inner container, all of which being formed from thin metallic sheet. Connection holes are formed in the outer lid and the inner lid by burring, and both end parts of thin-walled pipes are respectively connected while inserted in the connection holes. The inner lid is joined to the inner container, and the outer lid is joined to the outer container, thereby constituting a metallic sealed double container in which the inner container is isolated in the outer container. As a result, the weight of the metallic sealed double container is reduced, the temperature in the inner container can be maintained over long periods of time, and the heat-insulating effect of the resulting sealed double container is high.

Abstract: The connected structure includes a plurality of vacuum double pipes and a joint connecting the plurality of vacuum double pipes. Each vacuum double pipe includes an inner pipe and an outer pipe, and a vacuum passage is formed between the inner pipe and the outer pipe. The vacuum passage is open at both ends in an extension direction of the inner pipe and sealed between the both ends. The joint includes an inner pipe joint portion having inner pipe connectors and an outer pipe joint portion having outer pipe connectors. The joint evacuation passage connects the vacuum passages and is sealed between the outer pipe connectors.

Abstract: This invention provides a connected structure of vacuum double pipes. The connected structure comprises a plurality of vacuum double pipes and a joint configured to connect the plurality of vacuum double pipes. The vacuum passage is open at both end in an extension direction of the inner pipe and sealed between the both ends. The joint includes an inner pipe joint unit having inner pipe connectors and an outer pipe joint unit having outer pipe connectors. The evacuation passage is sealed between the outer pipe connectors that connect the vacuum passages of the outer pipes.

Abstract: An aroma dispensing method and device which includes: an air pump (2) for supplying air; six element smell bottles (5a)-(5f) for containing smell materials and for holding smells generated by blowing the air against the smell materials; and six solenoid valves for controlling of the air to be introduced into the element smell bottles. When the plurality of smells generated in the six element smell bottles are blended in specific mixing proportions, the mixing proportions are determined by numbers or time periods of opening and closing per second of the six solenoid valves respectively connected to the six element smell bottles; and proportions of the numbers or time periods of opening and closing per second of the solenoid valves correspond to the mixing proportions.