HOT WATER SUPPLY BATH DEVICE

• Main Authors: TAMURA TAKETOSHI, HOSHINO KENTA, TAKEHARA MASAKI, OIKAWA RYOYA
• Format: Patent
• Language: English; Japanese
• Published: 20.06.2024
• Subjects: BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; FLUES; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; HEATING; LIGHTING; MECHANICAL ENGINEERING; METHODS OF STEAM GENERATION; RANGES; REGULATING OR CONTROLLING COMBUSTION; REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTIONRESIDUES; STEAM BOILERS; STEAM GENERATION; VENTILATING; WEAPONS

To provide a hot water supply bath device that enables periodic removal of soot and can maintain combustion performance over a long period.SOLUTION: A hot water supply bath device includes: a heat exchanger (6); a burner 2; hot water delivery flow rate detection means (17) for detecting a flow rate of hot water to be delivered to a bathtub 50; hot water delivery temperature setting means 20; hot water filling instruction means 21; and deposition amount estimation means for estimating a deposition degree of deposits in the burner 2 and the heat exchanger (6). A control section 22 sets a target temperature to a second temperature T2 lower than a first temperature T1 to start a hot water filling operation when start of the hot water filling operation is instructed and a prescribed condition is satisfied, and performs a cleaning operation for setting the target temperature to a third temperature T3 higher than the first temperature T1 to perform the hot water filling operation for a prescribed time (Cy) after a hot water delivery amount based on the hot water delivery flow rate detection means (17) reaches a prescribed rate of a target hot water filling amount. The prescribed condition indicates that the deposition degree (N) estimated by the deposition amount estimation means is a prescribed value (Nc) or greater.SELECTED DRAWING: Figure 1 【課題】定期的に煤が除去され長期間にわたって燃焼性能を維持できる給湯風呂装置を提供する。【解決手段】熱交換器（６）とバーナ２と浴槽５０に出湯させる湯の流量を検出する出湯流量検出手段（１７）と、出湯温度設定手段２０と湯張指示手段２１と、バーナ２および熱交換器（６）の堆積物の堆積度合を推定する堆積量推定手段と、を備え、制御部２２は、湯張運転の開始が指示され、所定条件が成立したとき、目標温度を第１温度Ｔ１より低い第２温度Ｔ２に設定して湯張運転を開始し、出湯流量検出手段（１７）に基づく出湯量が目標湯張量の所定割合に達したあと、目標温度を第１温度Ｔ１より高い第３温度Ｔ３に設定して湯張運転を所定時間（Ｃｙ）行うクリーニング運転を実施し、所定条件は、堆積量推定手段で推定された堆積度合（Ｎ）が所定値（Ｎｃ）以上であるとした。【選択図】図１