KITCHEN VENTILATION SYSTEM AND ITS METHOD

• Main Authors: TAMURA MINORU, MATSUMOTO KEIICHI, TAKAHASHI OSAMU, NAGASAKA SHIGEYUKI, NAGAYAMA HIROKATSU
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2019
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

To save energy in kitchen ventilation while securing safety in kitchen internal environment.SOLUTION: Switching means is provided to switch a normal control operation for making a set temperature variable by automatic search to automatically determine a temperature deviation value relating to VAV control air volume so that an air volume of an outdoor unit (32) including an exhaust fan (13) and an air supply fan can be controlled while controlling an air volume of each of variable air volume devices (VAV 80, 81, 82, 83) disposed on a collection duct (21) for collecting air of branch ducts by detecting temperature deviation (74, 50) between the inside of the branch ducts (70) respectively disposed on exhaust hoods (5) and a kitchen room (2), and a safety priority operation operating the VAV with a maximum air volume on the basis of detection (53) of indoor carbon monoxide concentration.SELECTED DRAWING: Figure 1 【課題】厨房内環境の安全性を確保しつつ、厨房換気の省エネルギー化を図る。【解決手段】排気フード（５）毎に取付けた枝ダクト（７０）内と厨房室内（２）との温度偏差を検知（７４、５０）して、枝ダクトを集気する集合ダクト（２１）に設けた可変風量装置（Variable Air Volume:ＶＡＶ、８０、８１、８２、８３）毎の風量を制御した上、排気ファン（１３）および給気ファンを含む外調機（３２）の風量を制御し得るように、省エネルギー化を図る風量削減を目標値に漸近させるフローチャートに従って、ＶＡＶ制御風量と関連する温度偏差値を自動的に定める自動探索で設定温度を可変する通常制御運転と、室内の一酸化炭素濃度の検知（５３）でＶＡＶを最大風量で動作させる安全優先運転との切り替える手段を提供する。【選択図】図１