摘要:
[Subject Matter] To provide a printed wiring board in which no warping occurs even if interlayer insulation layers without core material are laminated on a core substrate.[Solution(s)] To lower the thermal expansion coefficient (CTE) to 20˜40 ppm, inorganic particles are added to core substrate 30 formed by impregnating glass-cloth core material with glass-epoxy resin. Furthermore, thickness (a) of core substrate 30 is set at 0.2 mm, thickness (b) of upper-surface-side first interlayer insulation layer (50A) at 0.1 mm, and thickness (c) of lower-surface-side second interlayer insulation layer (50B) at 0.1 mm. In setting so, using thin core substrate 30 and interlayer insulation layers (50A, 50B) without core material, it is thought that warping does not occur in the printed wiring board.
摘要:
A total heat exchanging element includes a partitioning component to which a water-soluble moisture-absorbing agent has been added that is a component partitioning between a first laminar air-flow path and a second laminar air-flow path that are layered; a spacing component that forms the first laminar air-flow path and the second laminar air-flow path and maintains a space between adjacent partitioning components; and an adhesive agent that adheres the partitioning component and the spacing component. The adhesive agent is a water-solvent-type adhesive agent impregnated with a water-soluble moisture-absorbing agent. The partitioning component and the spacing component are made from a liquid-absorbing material that absorbs water and substances dissolved in the water.
摘要:
A total heat exchanging element 10 includes a partitioning component 1, 1 to which a water-soluble moisture-absorbing agent has, been added that is a component partitioning between a first laminar air-flow path 4 and a second laminar air-flow path 5 that are layered; a spacing component 2, 2 that forms the first laminar air-flow path 4 and the second laminar air-flow path 5 and maintains a space between the partitioning components 1, 1; and an adhesive agent 3 that adheres the partitioning component 1, 1 and the spacing component 2, 2. The adhesive agent 3 is a water-solvent-type adhesive agent saturated with a water-soluble moisture-absorbing agent. The partitioning component 1, 1 and the spacing component 2, 2 are made from a liquid-absorbing material that absorbs water and substances dissolved in the water.
摘要:
A humidifier that suppresses formation of a slime, a scale, and a dew bridge in a lower portion of a humidifying member thereby preventing degradation in humidifying performance. The humidifier includes one or more porous metal bodies serving as the humidifying member and including therein a plurality of voids, a fan that blows air to the porous metal body, a water-supplying device (a supply pipe, a reservoir, and a nozzle) that supplies water to the porous metal body, and the porous metal body includes a tip portion formed in a lower end portion, in a protruding shape or a pointed shape.
摘要:
The present invention is a total heat exchange element in which a spacing member is provided on both sides of a sheet-like partition member to form a flow path and which performs heat exchange between an airflow that flows in a flow path formed on one side of the partition member and an airflow that flows in a flow path formed on another side of the partition member via the partition member, wherein the spacing member is molded integrally with the partition member by using a resin, and the partition member is configured to include a functional layer that has heat conductivity, moisture permeability, and gas shielding property and a heat shrink layer that shrinks at a predetermined temperature or higher.
摘要:
According to the present invention, in constituting a heat exchange element having a stacked-layer structure in which sheet-like partition members added a moisture absorbent thereto and spacing members are stacked alternately, the spacing members being joined with the partition members so as to form air flow passages together with the partition members, each of the spacing members includes a plurality of section walls that divide a space between the partition member joined under the spacing member and the partition member joined on the spacing member into a plurality of flow passages, and one or more first section walls formed with holes that bring adjacent flow passages into communication with each other and one or more second section walls formed with no hole that brings adjacent flow passages into communication with each other are alternately arranged in each of the spacing members. The present invention facilitates to constitute a light-weight total-heat type heat exchanger having high heat exchanging efficiency using the heat exchange element.
摘要:
A method for manufacturing a printed wiring board includes forming a pad for mounting an electronic component on a resin layer, forming a solder-resist layer on the resin layer and the pad, exposing an upper surface of the pad and a portion of a side wall of the pad from the solder-resist layer, and forming a metal layer on the upper surface of the pad and the portion of the side wall of the pad.
摘要:
A total heat exchange element has a stacked-layer structure in which sheet-like partition members added a water-soluble moisture absorbent thereto and spacing members are stacked alternately, the spacing members are joined with the partition members by using an adhesive so as to form air flow passages together with the partition members. According to the present invention, the spacing members have water retention properties. Further, an adhesive that exhibits insolubility to the water-soluble moisture absorbent or an aqueous solution of the water-soluble moisture absorbent is used as the adhesive. As a result, it is easy to obtain a total heat exchange element with which it is possible to easily constitute an air-conditioning apparatus or a ventilator that has high latent heat exchange efficiency and has high reliability.
摘要:
According to the present invention, in constituting a heat exchange element having a stacked-layer structure in which sheet-like partition members added a moisture absorbent thereto and spacing members are stacked alternately, the spacing members being joined with the partition members so as to form air flow passages together with the partition members, each of the spacing members includes a plurality of section walls that divide a space between the partition member joined under the spacing member and the partition member joined on the spacing member into a plurality of flow passages, and one or more first section walls formed with holes that bring adjacent flow passages into communication with each other and one or more second section walls formed with no hole that brings adjacent flow passages into communication with each other are alternately arranged in each of the spacing members. The present invention facilitates to constitute a light-weight total-heat type heat exchanger having high heat exchanging efficiency using the heat exchange element.
摘要:
When latent heat is transferred between the two airflows flowing along the respective sides of each partition member, not only a layer of moisture absorbent but also a layer of flame retardant lies in the direction of transfer of the moisture. Thus, even if the moisture is absorbed by the layer of moisture absorbent, the layer of flame retardant resists the moisture transfer so that the amount of transfer of the moisture decreases in that part with a drop in the moisture permeability of the partition member. To solve the problem, there is provided a total heat exchanging element comprising partition members and spacing members having moisture permeable portions provided with moisture permeability and flame resisting portions provided with flame retardancy, the both portions not overlapping with each other within each single member. For example, the partition members have the moisture permeable portions provided with moisture permeability, and the spacing members have the moisture resisting portions provided with flame retardancy.