In an era of material shortages and rising material costs, what should we prioritize and protect?

Exhaust type + diffusion type unit! A subfloor ventilation series that detects humidity conditions and draws in dry air from beneath the floor.

The system detects the amount of water vapor (absolute humidity) and independently controls the exhaust ventilation system and the diffusion fan. When there is a high amount of water vapor, only the diffusion fan operates, and when it is low, the exhaust ventilation system also operates to bring in dry air from below the floor. POINT 1: Optimal independent operation of exhaust and air supply with absolute humidity sensor POINT 2: Optimal deodorization operation with standard phytoncide POINT 3: Detects abnormalities in the underfloor ventilation fan and water issues, displaying them on the controller. 【Features】 ○ Effective against underfloor humidity, condensation, and mold ○ Powerful exhaust and diffusion For more details, please contact us or download the catalog.

• Ventilation and Exhaust

Exhaust type + stirring type unit type

It detects the amount of water vapor (absolute humidity) and independently controls the exhaust ventilation system and the mixing fan. When there is a lot of water vapor, only the mixing fan operates, and when there is less, the exhaust ventilation system operates as well, bringing in dry air from below the floor. POINT 1: Optimal independent operation of exhaust and air blowing with absolute humidity sensors POINT 2: Optimal deodorization operation with standard phytoncide POINT 3: Detects abnormalities in the underfloor ventilation fan and water issues, displaying them on the controller. 【Features】 ○ Effective against underfloor humidity, condensation, and mold ○ Powerful exhaust and mixing For more details, please contact us or download the catalog.

• Ventilation and Exhaust

A comfortable indoor environment! Prevents condensation and extends the lifespan of the building.

The underfloor ventilation "Kazetaro" maintains a comfortable condition for wood by forcibly introducing air into the underfloor space. It is particularly effective in eliminating condensation. Underfloor ventilation also affects the indoor environment, reducing the conditions for the growth of dust mites and mold, which benefits the health of the family. The Kazetaro unit uses a hybrid sensor to detect the amount of water vapor (humidity) in the outside air, and the hybrid controller independently controls the Kazetaro blower type and Kazetaro mixer type, creating optimal ventilation operation for the wood under the floor. 【Features】 ○ Improves ventilation effectiveness to prevent pest breeding ○ Forcibly introduces air into the underfloor space to prevent condensation ○ Maintains a comfortable condition for wood, extending the lifespan of the building ○ Reduces the conditions for the growth of dust mites and mold, making the indoor environment comfortable For more details, please contact us or download the catalog.

• Ventilation and Exhaust

Contributes to the prevention of condensation and mold under the floor. A new model compatible with the foundation packing method has been introduced.

The "DRY PRO" Ver3 is an electronic dehumidifying and blowing unit for underfloor use, combining a Peltier cooling device with a dedicated stirring and diffusion-type blower. In addition to the diffusion-type model "TYPE-D" for foundation insulation construction, a new model "TYPE-C" compatible with foundation packing construction has been added to the lineup. It can dehumidify even in areas where moisture tends to accumulate by stirring a wide range of air. It helps suppress moisture and condensation under the floor, contributing to the prevention of mold, pests, and decay fungi in wooden parts under the floor. Furthermore, with the version upgrade in June 2024, a powerful dehumidification operation mode will be added. The surrounding temperature range for dehumidification operation (low-temperature dehumidification operation range) has been expanded, allowing operation at surrounding temperatures down to 5°C. 【Features】 ■ Easy installation with a φ22 drainage hole (no drainage pump required) ■ Automatic operation possible with a dedicated indoor controller ■ The direction of the aluminum duct of the blower can be set freely ■ Dehumidification capacity of 1800mL per day (depending on conditions) ■ Uses fluorine-free electronic cooling technology ■ Compatible with underfloor flooding sensors (optional) *For more details, please refer to the PDF document or feel free to contact us.

• Dehumidifier

Measures against heat in the attic! Expels accumulated heat and improves air conditioning efficiency! Effective against humidity, condensation, and VOCs!

Modern houses have become highly airtight and well-insulated, resulting in issues such as the heat accumulated in attics reducing air conditioning efficiency during hot seasons. "Attic Ventilation Wind Helper" helps to forcibly expel the heat from the attic, improving air conditioning performance and assisting with condensation and VOC measures. We will present a demonstration unit, so please contact us for details and conditions. *The demonstration schedule will be arranged separately. 【Effects】 ○ Expels heat from the attic, improving air conditioning efficiency ○ Shuts out condensation ○ Effectively expels formaldehyde and VOCs, which are causes of sick house syndrome, protecting the health of your family and home. For more details, please contact us or download the catalog.

• Ventilation and Exhaust

We support creating a comfortable living environment by controlling humidity.

The bamboo charcoal mat for under the floor is made from natural materials, making it environmentally friendly and helpful for creating a comfortable living environment. Charcoal has been used for a long time due to its effectiveness in controlling humidity and prolonging the life of buildings. It is said that the surface area of bamboo charcoal (an indicator of adsorption capacity) is about ten times larger compared to the representative wood charcoal, binchotan. Additionally, bamboo charcoal has a structure resembling countless fine pipes, which not only provides high adsorption power but also decomposes the adsorbed substances, demonstrating long-term removal of harmful substances and deodorizing effects. By laying a bamboo charcoal mat under the floor, it continues to absorb moisture during the summer for an extended period, preventing the decay of foundations and floorboards, thus improving the durability of the building. *Using it in conjunction with an underfloor ventilation system will enhance its effectiveness. 【Features】 ○ Humidity control and deodorizing effects ○ Effective against mold and pest prevention ○ Protects important buildings ○ Energy-saving effects ○ Made from natural materials, environmentally friendly For more details, please contact us or download the catalog.

• Dehumidifier
• Ventilation and Exhaust

The future of wind and housing! A discussion on the current state of attics in Japanese homes.

In this discussion, we explain the measures against humidity and condensation in attics, as well as the importance of ventilation. Our company launched the underfloor ventilation system in 1981, and two years later, we introduced the attic ventilation system. Since then, after several model changes, it has now become a standard specification for new constructions in some cases. However, through many years of promotional activities, there is an impression that attic ventilation is perceived by both businesses and end users solely as a measure against heat. *For detailed content of the discussion, you can view the PDF materials or related links. Please feel free to contact us for more information.*

• Ventilation and Exhaust

Measures against condensation in summer! Condensation and corrosion within wall structures are often difficult to detect.

In 2020, the "mandatory energy-saving standards for housing" are scheduled to be implemented, and it is expected that Japanese homes will increasingly aim for high airtightness and high insulation. However, at the same time, measures against condensation during the summer must be considered. In a site where glass wool was filled using the 2x4 construction method and a vapor barrier was installed on the interior side, significant corrosion due to condensation occurred. It is believed that the interior became hot and humid, leading to condensation as it was cooled by the air conditioner on the inside. The hold-down hardware also showed white mold, and if corrosion progresses like this, it will pose problems for the durability of the building. This type of summer condensation particularly occurs in regions with high temperatures and humidity, like Japan. Therefore, it is necessary to implement sufficient measures against winter condensation while simultaneously preventing summer condensation. *For more details, please refer to the PDF document or feel free to contact us.

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The reduction rate is approximately 15% to 23%! We confirmed energy-saving effects by ventilating the attic.

This experiment examines the "effect of indoor air conditioning electricity consumption." By ventilating the attic, the reduction rate of electricity consumption during air conditioning operation on sunny days was approximately 15% to 23% (*), confirming energy-saving effects. Additionally, a temperature comparison between the attic, indoors, and the human body using a thermotracer showed that with a ventilation system, the temperature of wooden parts such as beams and the ceiling in the attic was lower, and the temperature difference indoors was reduced by height. *Varies depending on conditions and the capacity/efficiency of the air conditioner Air conditioning operation time: 16:00 to 22:00 for 6 hours [Results of the indoor air conditioning electricity consumption effect experiment] ■ The reduction rate of electricity consumption during air conditioning operation was approximately 15% to 23% (on sunny days) ■ Energy-saving effects were confirmed *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust

When the moisture content exceeds 20-25%, wood decay is more likely to occur.

The effect of completely dried wood on the ventilation conditions under the floor was tested in a test house. Initially, the moisture content rises as it absorbs moisture from under the floor, but in the case of the underfloor with a "subfloor ventilation fan," the moisture content of the posts stabilizes at around 20%, as shown in the graph in the image. It can be seen that the moisture content is about 5% lower compared to the case without the "subfloor ventilation fan." 【Test Overview】 <Comparison of Moisture Content in Underfloor Posts in the Test House> ■ Period: May 24, 2003 - July 27, 2003 ■ Post Size: 105×400mm, measuring three posts, the graph shows the average moisture content of the three posts ■ Measuring Equipment: Sanko Electronic Research Institute, Moisture Meter MR-200 *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust

The cause is a large amount of water vapor! The challenge is how to remove humidity and suppress mold and decay.

Foundation insulation is a method of insulating the foundation that faces the outside air. The period when the risk of condensation and mold is highest with foundation insulation is from June to September of the first year after completion. The main cause is the large amount of water vapor that comes from the concrete floor. Especially, wood that contains a lot of moisture significantly deteriorates in strength, so it is important to be cautious considering durability against earthquakes and typhoons. As a solution to these moisture problems, our company has developed a dedicated underfloor dehumidifier called "Dry Pro." It effectively eliminates moisture and condensation, and is useful for preventing mold, pests, and decay fungi in the underfloor wooden components. (Patent and design application pending) 【Features of Dry Pro】 ■ Dehumidification capacity of approximately 400-600cc per day on humid days during the rainy season and summer ■ Circulates dehumidified air widely using a blower ■ Quiet design: 45/44dB ■ Equipped with fittonia, which has deodorizing effects as standard *For more details, please refer to the PDF document or feel free to contact us.

• Dehumidifier

After about one month, a drier condition (wood moisture content 12%) was confirmed!

"Dry Pro" is a floor dehumidifying blower that effectively eliminates moisture and condensation, and is useful for preventing mold, pests, and decay fungi in the wooden parts under the floor. Assuming the early stages of new construction for homes with foundation insulation methods, 36 liters of water were sprinkled on the foundation under each building, and dried wood (cedar) was installed to measure the moisture content of the wood and the humidity under the floor. As a result, the buildings where this product was installed gradually dried out by repeatedly operating the dehumidification process every day, and after about two months, an average of approximately 70% RH in a dried state was confirmed even outside of the dehumidification operation hours. [Experiment] ■ Test House A - Floor area approximately 10 tsubo - Foundation insulated underfloor (Dry Pro installed) ■ Test House B - Floor area approximately 10 tsubo - Foundation insulated underfloor (no dehumidifying blower) *For more details, please refer to the PDF document or feel free to contact us.

• Dehumidifier

Explaining the usefulness of underfloor electronic dehumidifying and air circulation units that disperse dehumidified air over a wide area.

This document introduces the usefulness of underfloor and attic ventilation using products such as the "Underfloor Ventilation Basic Series" and the "Underfloor Dehumidifier Dry Pro." By removing moisture from the foundation materials of the house, it not only suppresses mold and decay but also includes verification data showing improvements in insulation effectiveness. Additionally, it features a digital timer that detects underfloor flooding and leaks, as well as information about our regular safety inspections for long-term use. 【Contents of the Document (Excerpt)】PDF document (20MB) 17 pages ■ Needs and measures for underfloor ventilation in water-related areas ■ Digital timer with underfloor flooding sensor ■ Case studies on the security system "Life Defense Air" ■ Information on product and system safety inspections ■ Introduction of measurement data verifying attic ventilation effectiveness ■ Explanation of foundation insulation methods and solutions for moisture problems *For more details, please refer to the document. Feel free to contact us with any inquiries.

• Ventilation and Exhaust

Fukuda Corporation has been pursuing leak detection for 60 years and is dedicated to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing performance. We will propose suitable testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

This is a collection of links to Fukuda's technical columns. It covers various topics related to leak tests and more... Please check the related links for more information.

Metal cracks are one of the concerns in equipment maintenance operations. Conventional welding repair methods can alter the base material around the crack due to heat, leading to residual stress and deformation, which always carries the risk of "crack recurrence" and "secondary damage." Hinode Water Supply Equipment Co., Ltd.'s "Mechanical Stitching Method" is a new technique that allows for metal crack repair without applying heat. By using special bolts and reinforcement plates, the crack is physically removed without affecting the base material with heat. Repairs can be made even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. For more details, please contact us or download the catalog.

● The production time for casting prototypes can be shortened! Since model production is not required, the time needed to create prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly producing sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! Different products, such as similar shapes or variations in dimensions, can be molded at the same time in one molding process. This allows for the verification of multiple types in a short period.

Metal cracks are one of the concerns in equipment maintenance operations. Conventional welding methods for repairs can change the base material around the crack due to heat, leading to residual stress and deformation, which always carries the risk of "crack recurrence" and "secondary damage." Hinode Waterworks Equipment Co., Ltd.'s "Mechanical Stitching Method" is a new technique that allows for metal crack repairs without applying heat. By using special bolts and reinforcement plates, the crack is physically removed without affecting the base material at all. Repairs can be made even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. For more details, please contact us or download the catalog.