1308630 九、發明說明： 【發明所屬之技術領域】 乂本發明係有關於一種強制排氣式熱水器， 係指一種提升熱水器燃燒性能與安全之控制方法。’特別 【先前技術】 目前市面上常見的瓦斯熱水器的商品型式，可、 (屋外設置式）、CF(自然排氣式）、FE(強制 二種。其中「室外專用」的RFS，因為沒有任何排^ 施-定要」裝置在完全開放的空間。而「自然拆氣^ CF式，則是靠熱氣產生的自然壓力，使一氧化碳排至 於「風扇強制排氣」的FE式，熱水器裡直接裴置風I 以將廢氣強制抽出。 1 上述之「風扇強制排氣」的FE式熱水器可提供主動 的引導氣流將熱水器内燃燒之廢氣排出，以防止燃燒不完 全或殘氣燃爆、外洩之情形發生。 如2005年1〇月21日台灣專利號M278861「熱水器 強制排器控制構造」已有說明，係利用一送風機提供主動 的引導軋流將熱水器内燃燒之廢氣排出。其中係藉由風壓 偵測單元偵測送風機提供足夠之風壓，而再由風壓偵測單 元提供風壓信號通知排風控制單元，接著透過排風控制單 元與點火控制單元間信號之傳遞，進而控制送風機，達成 於良好的引導氣流下執行點火燃燒瓦斯，以將進水加熱之 功效。 然而一般風壓偵測單元(裝置)於使用時，難免遇到有 1308630 ’風吹進熱水ϋ之㈣π，躲狀逆風壓使風機運轉不正 常’進，辟風壓彳貞測單元之侧，喃出錯誤之信銳造 成熱水器控鮮①誤動作。再者，—般市面上風壓偵測單 70之成本亦偏高，是以實存有待改善<處。 【發明内容】 ^本發明為一提升熱水器燃燒性能及安全之控制方法， 係以送風機的物理特性，透過比例閥電流與送風機在 轉速下之馬達電朗的對應，來麟外界環較否出 ，過大的現象，並輕馬達轉速，以確保m在點火辦 燒的過程中’所引進的瓦斯能與线有適當的混合，達到' 的燃燒條件，確保良好的燃燒狀況，以確保使用者的 ^s 王 〇 ϋΐι ϊ ，控制單元、檢測單从送風機。 二早7G連結於點火控制單元，排風控制單元連結於 &制單元、賴機及檢解元，賴機連結於單元火 而強制排氣式熱水器連結於供水單元。 、皁兀’ 百先’當強制排氣式熱水H燃燒瓦斯時，送風機 “2Γί==ί侦且檢測單元會_ 進-步判斷馬達運轉的情形。 衩制早兀，以 馬達運轉的轉速是否可被調整，來進—步控==_目前 接著，排風控制單元會根據偵測訊號來判读 馬達電流μ高於正常作動轉線上紅 低於異常作_界線上的異常作動臨界值，°°1值” |機馬達 1308630 =速：吏燃燒廢氣的排放至少可以達到可接受範圍内。 :卜：排風控制早元會根據偵測訊號來判斷送風機的馬達 電流疋否小於過風壓設定值，以較此_送風機是否可 以透過補償的方切加轉絲，使馬達電流 作動臨界線。 最後在馬達H低於*常作動臨界線的情況下，根 據馬達電流是否可以拉回異常作_界線之上，來判斷是 否需要#止燃燒瓦斯，並停止瓦斯的供應，以確保使用者 的安全。〜 【實施方式】 請參考第一圖所示，其係為本發明内容之強制排氣式 熱水器之主要功能方塊圖。強制排氣式熱水器（C〇mpUlS〇ry exhaust hot-water-heater) 1 包含一點火控制單元（igniti〇n control unit) 10、一給水單元（water injection unit) 20、 一排風控制單元（exhaust control unit) 30、一檢測單元 (detection unit) 40 及一送風機（air-extracting apparatus ) 50。而強制排氣式熱水器1連結於一供水單元（water supplying unit) 2，用以由供水單元2提供強制排氣式熱水 器1所加熱過的熱水給使用者使用。 給水單元20連結於點火控制單元10，當使用者開啟 連結於強制排氣式熱水器1的供水單元2時，給水單元2〇 會自動將未加熱過的冷水引進強制排氣式熱水器1中’旅 偵測引進強制排氣式熱水器1中的水量大小，以產生水量 偵測訊號（water quantity signal)至點火控制單元1〇。 點火控制單元1〇連結於排風控制單元，當點火控 1308630 制單元ίο得知有足夠的水量被引進強制排氣式熱水器i t時，在強制排氣式熱水器1沒有任何異常狀況下，例如 排風口沒有受阻、強制排氣式熱水器1外風壓（wind pressure)正常等，便引進瓦斯以進一步執行點火程序 (ignition process)，並使引進強制排氣式熱水器1中的冷 水加熱，於供水單元2送出熱水。此外，在給水單元2〇 提供水量偵測訊號至點火控制單元10的同時，點火控制單 元10會傳送一排風控制訊號（exhaust signal)至排風控制 # 單元30。 工 排風控制單元30連結於送風機50及檢測單元4〇 ,檢 測單元40連結於送風機50。當點火控制單元1〇利用排風 控制訊號來驅動送風機50的馬達運轉時，送風機5〇會主 動引導氣流，將強制排氣式熱水器i内燃燒的廢氣排出。 在送風機50馬達運轉的同時，檢測單元4〇會隨時偵 測馬達運轉的轉速及送風機的馬達電流Im等，以產生债 測訊號至排風控制單元30，使排風控制單元3〇可以隨時 • 1控送風機50馬達的運轉情形。此外，排ϋΐ控制單元30 會根據檢測訊號的結果，來判斷送風機5〇排放燃燒廢氣的 政率是否正常，以決定增加馬達轉速或降低馬達轉速，亦 或f制點火控制單元W停止點火燃燒瓦斯。然而，當強制 ..棑氣式熱水器1的排氣口受到阻礙，或強制排氣式熱水器 1外的風壓古過大時，會造成送風機％馬達的轉速會降低， 且馬達電流Im也會降低，因此導致點火控 燒的廢氣無法順利排放出去。 平凡所.、、、 因此本發明利用上述馬達的物理特性，提 熱水器職性㈣安全之控财法，請參考第二圖及第三 1308630 圖所示，來說明利用排風控制單元30來監控送風機5〇馬 達運轉的情形，以進一步來控制點火控制單元10的作動， 防止因排氣口受阻或風壓過大所造成的廢氣無法順利排出 的現象。其中，第二圖係為本發明内容之強制排氣式熱水 器之比例閥電流與馬達電流之對應波形圖，第三圖係為本 發明内容之強制排氣式熱水器執行提升熱水器燃燒性能與 安全之控制方法的流程圖。 在第二圖中，比例閥電流與馬達電流之對應波形圖主 要分為四部份，分別為一正常作動區I、一控制作動區u 及一異常作動區皿。 . 當強制排氣式熱水器1運作在正常作動臨界線c上 時，.表示強制排氣式熱水器1外界係呈現無風狀態，或者 強制排氣式熱水器1的排風口並未受到阻塞，因此在此理 想狀態下，強制排氣式熱水器1燃燒瓦斯所產生的燃燒廢 氣可以不受任何阻礙地順利排放出去。 當強制排氣式熱水器1運作在正常作動區I時，表示 強制排氣式熱水器1外界係呈現有風狀態但微弱，或者強 制排氣式熱水器1的排風口稍微受到阻塞，因此此時的強 制排氣熱水器1燃燒瓦斯所產生的燃燒廢氣雖然在排放時 受了點阻塞，但在排放燃燒廢氣的性能上仍不受影響，還 不致影響瓦斯與空氣混合的比例。 當強制排氣式熱水器1運作在控制作動區π時，表示 強制排氣式熱水器1係呈現有風狀態但猶強，或者強制排 氣式熱水器1的排風口受到較大的阻塞’因此此時的強制 排氣熱水器1燃燒瓦斯所產生的燃燒廢氣雖然在排放時受 了點阻塞，但在排放燃燒廢氣的性能上仍在可接受範圍， 1308630 瓦斯的比例鞘高了一點。 當強制排氣式熱水器1運作在異常作動區m時，表示 強制排氣式熱水器1係至現過風壓狀態’或者強制排氣式 熱水器1的排風口受到嚴重的阻塞，因此此時的強制排氣 熱水器1燃燒瓦斯所產生的燃燒廢氣在排放時受了嚴重的 阻塞’且在排放燃燒廢氣的性能上已超過設計標準，甚至 還嚴重影響了瓦斯與空氣混合的比例。1308630 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a forced exhaust type water heater, which is a control method for improving the combustion performance and safety of a water heater. 'Special【Prior Art】 Currently, the types of gas water heaters commonly available on the market are available, (outdoor type), CF (natural exhaust type), and FE (forced two types. Among them, "outdoor dedicated" RFS, because there is no The installation is fixed in a completely open space. The "natural degassing ^ CF type is based on the natural pressure generated by the hot air, so that the carbon monoxide is discharged into the "fan forced exhaust" FE type, directly in the water heater The air I is forced to withdraw the exhaust gas. 1 The above-mentioned "fan forced exhaust" FE type water heater can provide active guiding airflow to exhaust the exhaust gas in the water heater to prevent incomplete combustion or residual gas explosion and leakage. The situation has occurred. For example, on January 21, 2005, Taiwan Patent No. M278861 "Control System for Water Heater Forced Discharger" has been described. It uses a blower to provide active guiding flow to discharge the exhaust gas from the water heater. The pressure detecting unit detects that the blower provides sufficient wind pressure, and then the wind pressure detecting unit provides a wind pressure signal to notify the exhaust control unit, and then passes through the exhaust control unit. The transmission of the signal between the ignition control unit, and then the control of the blower, achieves the ignition and combustion of the gas under a good guiding airflow to heat the influent water. However, when the wind pressure detecting unit (device) is used, it is inevitable to encounter 1308630 'The wind blows into the hot water ( (4) π, the evasive wind pressure makes the fan run abnormally 'into, the side of the wind pressure measuring unit, whispering the wrong letter to cause the water heater to control the 1 malfunction. Again, the general The cost of the wind pressure detection unit 70 on the market is also high, and the actual situation needs to be improved. [Invention] The present invention is a control method for improving the combustion performance and safety of a water heater, and is based on the physical characteristics of the blower. Through the proportional valve current and the blower motor's motor power in response to the speed, the external loop of the Lin is relatively out, too large, and the speed of the light motor to ensure that the m gas introduced during the ignition process The line has proper mixing to achieve 'burning conditions' to ensure good combustion conditions to ensure the user's ^s Wang 〇ϋΐ ϊ, control unit, test single from the blower. The 7G is connected to the ignition control unit, and the exhaust control unit is connected to the & unit, the unit and the detection unit. The unit is connected to the unit fire and the forced exhaust water heater is connected to the water supply unit. Saponin '百先' When the forced exhaust hot water H burns the gas, the blower "2Γί== ί and the detection unit will _ advance-step to judge the motor operation. 衩 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀- Step control ==_ At present, the exhaust control unit will judge the motor current μ from the detection signal to be higher than the abnormal actuation threshold of the red line below the abnormal operation line, °°1 value Motor 1308630 = speed: 排放 The emission of combustion exhaust gas can reach at least the acceptable range. : Bu: The exhaust control early will judge whether the motor current of the blower is less than the set value of the over-wind pressure according to the detection signal. Whether the blower can pass the compensated square cut and twist the wire to make the motor current actuate the critical line. Finally, if the motor H is lower than the *normally acting critical line, it is determined whether or not the gas is required to be burned based on whether the motor current can be pulled back to the abnormal line, and the gas supply is stopped to ensure the safety of the user. . ~ [Embodiment] Please refer to the first figure, which is a main functional block diagram of the forced exhaust type water heater of the present invention. C〇mpUlS〇ry exhaust hot-water-heater 1 includes an ignition control unit (10), a water injection unit 20, and an exhaust control unit (exhaust) Control unit 30, a detection unit 40 and an air-extracting apparatus 50. The forced discharge type water heater 1 is connected to a water supply unit 2 for supplying the hot water heated by the forced discharge type hot water unit 1 to the user by the water supply unit 2. The water supply unit 20 is coupled to the ignition control unit 10. When the user opens the water supply unit 2 coupled to the forced exhaust type water heater 1, the water supply unit 2 automatically introduces the unheated cold water into the forced exhaust type water heater 1 The amount of water introduced into the forced exhaust type water heater 1 is detected to generate a water quantity signal to the ignition control unit 1 . The ignition control unit 1 is coupled to the exhaust control unit. When the ignition control 1308630 unit ίο knows that sufficient water is introduced into the forced exhaust water heater it, the forced exhaust water heater 1 does not have any abnormal condition, for example If the exhaust vent is not blocked, the forced venting water heater 1 has a normal wind pressure, etc., gas is introduced to further perform the ignition process, and the cold water introduced into the forced venting water heater 1 is heated. Unit 2 sends hot water. Further, while the water supply unit 2 is supplied with the water amount detecting signal to the ignition control unit 10, the ignition control unit 10 transmits an exhaust signal to the exhaust control unit #30. The exhaust ventilation control unit 30 is coupled to the blower 50 and the detection unit 4A, and the detection unit 40 is coupled to the blower 50. When the ignition control unit 1 uses the exhaust control signal to drive the motor of the blower 50, the blower 5 主 actively directs the air flow to exhaust the exhaust gas combusted in the exhaust water heater i. While the blower 50 motor is running, the detecting unit 4〇 detects the rotational speed of the motor running and the motor current Im of the blower at any time to generate a debt measurement signal to the exhaust control unit 30, so that the exhaust control unit 3 can be used at any time. 1 control the operation of the blower 50 motor. In addition, the drainage control unit 30 determines whether the rate of discharge of the combustion exhaust gas by the blower 5 is normal according to the result of the detection signal, to determine whether to increase the motor speed or reduce the motor speed, or the ignition control unit W stops the ignition combustion gas. . However, when the exhaust port of the forced air heater 1 is obstructed, or the wind pressure outside the forced exhaust water heater 1 is too large, the speed of the blower % motor will decrease, and the motor current Im will also decrease. Therefore, the exhaust gas that is controlled by the ignition cannot be smoothly discharged. Ordinary, and therefore, the present invention utilizes the physical characteristics of the above-mentioned motor to provide the water control service (4) security control method, please refer to the second figure and the third 1306630 diagram to illustrate the use of the exhaust control unit 30 for monitoring When the blower 5 〇 motor is operated, the operation of the ignition control unit 10 is further controlled to prevent the exhaust gas from being smoothly discharged due to the exhaust port being blocked or the wind pressure being excessively large. The second figure is the corresponding waveform diagram of the proportional valve current and the motor current of the forced exhaust type water heater of the present invention, and the third figure is the forced exhaust type water heater of the present invention to perform the improvement of the combustion performance and safety of the water heater. Flow chart of the control method. In the second figure, the corresponding waveform diagram of the proportional valve current and the motor current is mainly divided into four parts, which are a normal actuation zone I, a control actuation zone u and an abnormal actuation zone. When the forced venting water heater 1 operates on the normal operating threshold c, it indicates that the forced venting water heater 1 is outside the windless state, or the exhaust vent of the forced venting water heater 1 is not blocked, so here Ideally, the combustion exhaust gas generated by the forced venting water heater 1 burning gas can be smoothly discharged without any hindrance. When the forced venting water heater 1 operates in the normal operating zone I, it indicates that the external venting water heater 1 is in a windy state but weak, or the exhaust vent of the forced venting water heater 1 is slightly blocked, so the forcing at this time The combustion exhaust gas generated by the exhaust gas water heater 1 burns gas, although it is blocked at the time of discharge, it is still unaffected in the performance of discharging the combustion exhaust gas, and does not affect the ratio of gas to air mixing. When the forced exhaust type water heater 1 operates in the control actuation zone π, it indicates that the forced exhaust type water heater 1 is in a windy state but is still strong, or the exhaust port of the forced exhaust type water heater 1 is largely blocked. The forced exhaust water heater 1 burns the combustion gas generated by the gas, although it is blocked at the time of discharge, but the performance of the exhaust gas is still acceptable, and the proportional sheath of 1308630 gas is a little higher. When the forced venting water heater 1 operates in the abnormal operating zone m, it indicates that the forced venting water heater 1 is in the current over-pressure state 'or the exhaust vent of the forced venting water heater 1 is severely blocked, so the forcing at this time The combustion exhaust gas generated by the exhaust water heater 1 burning gas is severely blocked during discharge' and the performance of discharging the combustion exhaust gas has exceeded the design standard, and even seriously affects the ratio of gas to air mixing.
在第二圖中，強制排氣式熱水器1在排放燃燒瓦斯戶斤 產生的燃燒熱氣時，監控送風機50運作狀態‘步驟如^ : 首先，當使用者開啟供水單元2時，給水單元2〇會自 動將未加熱過的冷水引進強制排氣式熱水器1中，並偵、、則 引進強制排氣式熱水器1中的水量大小，以產生水量铺^ 訊號至點火控制單元10。當點火控制單元1〇得知有足多^ 的水量被引進強制排氣式熱水器1中時，會傳送一排風押 制訊號至排風控制單元30，使排風控制單元3〇驅動二^In the second figure, the forced venting water heater 1 monitors the operating state of the blower 50 when discharging the combustion hot gas generated by the burning gas sump. Steps: First, when the user turns on the water supply unit 2, the water supply unit 2 The unheated cold water is automatically introduced into the forced exhaust type water heater 1, and the amount of water in the forced exhaust type water heater 1 is introduced to generate a water amount signal to the ignition control unit 10. When the ignition control unit 1〇 knows that there is more than enough water to be introduced into the forced exhaust type water heater 1, an exhaust damper signal is transmitted to the exhaust control unit 30, so that the exhaust control unit 3 drives the motor 2
機50馬達。其中，當馬達運轉的同時，檢測單元4〇 ‘不 斷地偵測料速及料錢Im，並傳送彳貞測^ 控制單元30’以進一步判斷馬達運轉的情形，二‘ 驟 S210 〇 / 排風控制單元30接收到檢測單元4 梦 == 康此侦測訊號來判斷馬達的馬達電流J = 係為於異常作動臨界線A上比例閥電馬界: 對應值0 ，、巧運％ 丨Llm的 當馬達電流Itn大於異常作動臨界 — 風機50的運作係保持在控制作動區II或正= I3〇863〇 中，因此進一步判斷馬達電流Im是否大於控 =界:步驟S223。其中，控制作動臨界值係為於控制作: 界線B上比例閥電流與馬達電流Im的對應值。動 當馬達電流Im大於異常作動臨界值，而小於控 ，界值時，表示目前送風機5〇的運作係保持在控= 品Π中’因此排風控制單元3G*會對送風機％作轉 正的動作，且回到步驟S21〇繼續透過檢測單元4〇來檢二 送風機50馬達的馬達電流〗!!!。當馬達電流Im不僅大於異 常作動臨界值，且大於控制作動臨界值時，表示目前送風 機50的運作係保持在正常作動區工中，因此進一步判斷^ 用來調整馬達轉速的轉速調整值是否為0 (亦即馬逵鼓、$ 可調整範圍的下限），以決定排風控制單元3Q* 低送風機50馬達的轉速，以利無風時回到最佳之設計， 如步驟S235 〇 '口 ， 义當此時的轉速調整值已達到下限，表示送風機5〇馬達 目前係處於無法再繼續降轉速的狀態，因此排 升 3〇會直接回到步驟S210，繼續量測馬達電流ΙηιΓ當此時 的轉速調整值尚未達到下限’表示送風機5〇馬達目前係處 於可再繼續降低轉速的狀態，因此排風控制單元3〇可控制 送風機50馬達來降低轉速，並再重新量測馬達的馬達^流 如，如步驟S245。在調整馬達電流Im的過程中，檢測單 凡40會不斷地量側馬達電$Im的大小，並產生偵測訊號 回排風控制單元30，因此排風控制單元3〇會根據收到的 偵測訊號來判斷馬達電流Im是否小於控制作動臨界值， 如步驟S253。 ' 當經過調整後的馬達電流Im小於控制作動臨界值 11 1308630 時，表示送風機50的運作已調整在控制作動區^中，因 排風控制單元30會回到步驟S210，重新量測馬達電流Im t大小。當經過調整後的馬達電流仍大於控制作 界值時，表示送風機50的運作能在正常作動區J中，二 ^風控制單元30會回到步驟S235，判斷送風機5〇可以調 的轉速調整值是否為0,並重複步驟S235、S245及S25^ =動，’直到馬達電流Im小於控制作動臨界值為止，以 2保送風機50的運作係在㈣作動區π中，甚 動臨界線Bls 制作 ，據步驟S220，當馬達電流Im小於異常作動臨界值 等，表不目前送風機50的運作係保持在異常作動區 5此排風控制單^ 3G會根據檢測單元4G回傳的偵測訊 來判斷馬達運轉的轉速是否已經達到最高轉逮，也就 疋馬達運轉的最高極限速度，如步驟S230。 …當馬達運轉的轉速已經達到最高轉速時，表示送風機 運轉已達到了極限，但點火控制單元1()仍無法透過送 二燃燒產生的廢氣全部排放出去，因此排風 控制单兀30會進一步地判斷馬達雷片了 設定值，如步㈣3。 "疋否小於過風壓 當馬達運轉的轉速已達到最高轉速，且馬達的 Κ 壓設定值時，表示此時的強制排氣式熱水 器1仍有機會透過補償的方式，將送風機50的運作拉回到 ，制作動區ϋ中，因此強制排氣式熱水器1的運作則回到 ν驟S210,排風控制單元3()仍會_驅動送風機％嘗試 將點火控鮮％ 所點氣龍燒產生_燒 強制排氣式熱水器1外，並且隨時量測送風機50的=電 12 1308630 轉：!!，達到最高轉速， 排氣式熱柄丨^二風&料，麵此時的強制 作拉__4;:=二方=，的運 很據步驟S230 時，則進—^；7’當馬達運轉的轉速尚未達到最高轉y 已達二=來調整馬達轉速的轉速調整值2 〜達J上限（亦即馬達轉速設定可調整 :排=單元3。是否可以控制提升送風機5〇以 迷以補侦运風機50排出燃燒廢氣的能力，如步驟do祠 整值⑽耻限，不僅表示_排 =界風壓可能太大，或者強制排氣式熱水器 甚至表示目前的強制排氣式熱水器i 顧機顯驗燒廢氣的能力，排風控制 早7G 30會進-步控制點火控制單元1〇停止燃燒瓦斯， 阻斷瓦斯的供應，如步驟S243。當轉速調整值尚未達到上 限，表示雖然強制排氣式熱水器丨外界風壓可能過大， 者強制排氣式熱水器1的排風口可能受阻，但是目前的^ 制排氣式熱水器ί仍然可以進行補償送風機5〇排出m堯廢 氣的能力，因此排風控制單元30會進一步控制送風機5〇 馬達提升運轉的轉速，並隨時透過檢測單元4〇量測馬達電 流Im的值，如步驟S250。 ，最後’排風控制單元3〇會進一步判斷提升轉速後的馬 達電流是否仍小於異常作動臨界值，如步驟S26〇。當調整 後的馬達電流仍然小於異常作動臨界值時，則回到步驟 13 1308630 S230，重複上述之步驟，直到馬達電流提升至大於異常作 動臨界值為止，也就是說，馬達運作必須由異常作動區诅 回復到控制作動區Π。當調整後的馬達電流已大於異常作 動臨界值時，也就是說馬達的運作已經由異常作動區羾回 復到控制作動區Π，強制排氣式熱水器1的運作將回到步 驟S210，繼續燃燒瓦斯，並重複上述步驟，以確保強制排 氣式熱水器1排放燃燒廢氣的能力。 因此’由上述強制排氣式熱水器1在監控排放燃燒瓦 斯所產生的燃燒廢氣的步驟中可以得知，倘若要使強制排 軋式熱水器1能順利排放燃燒廢氣，並使瓦斯與空氣的混 合比例達到適合的燃燒條件，送風機5〇就必須運作在正常 作動區I或控制作動區Π中，尤其是在正常作動區j及控 制作動區Π之間的正常作動臨界線b，當馬達電流Im的值 等於此正常作動臨界線B上的正常作動臨界值時，不僅可 以保持正常的排氣狀況，也可以節省馬達運轉所消耗的電 力。如此一來，在確保強制排氣式熱水器丨能正常工作的 情況下，點火控制單元1〇所引進的瓦斯便能與空氣有適當 的混合，以達到適當的燃燒條件，確保良好的燃燒狀況， 亦即保持熱效高、燃燒廢氣值低等。 a 士本發明所提供之優點在於，利用送風機在排放燃燒廢 氣時，若遇到風壓過大或排風口受阻，馬達電流及馬達運 轉的轉速會下降的物理特性，來判斷強㈣氣式熱木器外 界風壓疋否過大，以及排氣口是否阻塞，即判斷強制排氣 式熱水器是否能正常排放燃燒廢氣。 本發明所提供之另一優點在於，利用馬達電流及比例 閥電流所對應的參難，來做為難馬達轉速的满依據。 14 1308630 本發明所提供之再一優點在於，利用馬達電流與比例 閥電流所對應的參照值中的異常作動臨界值、控制作動臨 界值及過風壓設定值，來作為調整馬達轉速的判斷依據6 . 本發明所提供之再一優點在於，當強制排氣式熱水器 的排風口受到嚴重阻塞，或外面風壓持續過大時，將停止 燃燒瓦斯，並阻斷瓦斯的供應，以確保使用者的安全。 本發明所提供之再一優點在於，當強制排氣式熱水器 的排風口受到不嚴重的阻塞，或外面風壓仍可接受時，利 • 肖增加馬建轉速來補償強制排氣式熱水器排放燃燒廢氣的 „提供之再一優點在於’在確保蠢制排氣式熱 f為此正吊工作的情況下，點火控制單元所引進的瓦斯便 能與空氡有適當的混合’以達到適#的Machine 50 motor. Wherein, when the motor is running, the detecting unit 4 〇 'continuously detects the material speed and the money Im, and transmits the ^^ control unit 30' to further judge the operation of the motor, and the second step S210 〇 / exhaust The control unit 30 receives the detection unit 4 dream == Kang detection signal to determine the motor motor current J = is the abnormal valve actuation line A on the proportional valve electric horse boundary: corresponding value 0, skillfully % 丨 Llm When the motor current Itn is greater than the abnormal actuation threshold - the operation of the fan 50 is maintained in the control actuation zone II or positive = I3 〇 863 ,, it is further determined whether the motor current Im is greater than the control = boundary: step S223. The control actuation threshold is determined by the control: the corresponding value of the proportional valve current and the motor current Im on the boundary B. When the motor current Im is greater than the abnormal operating threshold, and less than the control, the boundary value, it means that the current operation of the blower 5〇 is kept in the control = Π ' 'thus, therefore the exhaust control unit 3G* will turn positive to the blower % And returning to step S21, continuing to check the motor current of the blower 50 motor through the detecting unit 4〇. When the motor current Im is not only greater than the abnormal operating threshold, and greater than the control actuation threshold, it indicates that the current operation of the blower 50 is maintained in the normal operating zone, so it is further determined whether the rotational speed adjustment value used to adjust the motor rotational speed is 0. (ie, the horse drum, the lower limit of the adjustable range), to determine the speed of the exhaust control unit 3Q* low blower 50 motor, in order to return to the best design when there is no wind, such as step S235 〇 ' mouth, righteous At this time, the speed adjustment value has reached the lower limit, indicating that the blower 5 〇 motor is currently in a state in which it can no longer continue to reduce the speed. Therefore, the lift 3 〇 will directly return to step S210 to continue measuring the motor current ΙηιΓ when the speed is adjusted. The value has not reached the lower limit' indicates that the blower 5 〇 motor is currently in a state where the speed can be further reduced, so the exhaust control unit 3 can control the blower 50 motor to reduce the rotational speed, and then re-measure the motor motor such as Step S245. In the process of adjusting the motor current Im, the detection unit 40 will continuously measure the magnitude of the motor power $Im and generate the detection signal back to the exhaust control unit 30, so the exhaust control unit 3 will receive the detection according to the detection. The test signal is used to determine whether the motor current Im is less than the control actuation threshold, as in step S253. When the adjusted motor current Im is less than the control actuation threshold 11 1308630, it indicates that the operation of the blower 50 has been adjusted in the control actuation zone, because the exhaust control unit 30 will return to step S210 to re-measure the motor current Im. t size. When the adjusted motor current is still greater than the control threshold value, it indicates that the operation of the blower 50 can be in the normal actuation zone J, and the control unit 30 returns to step S235 to determine the speed adjustment value that the blower 5 can adjust. Whether it is 0, and repeat steps S235, S245 and S25^ = move, 'until the motor current Im is less than the control actuation threshold, the operation of the 2 blower 50 is in the (4) actuation zone π, and the criticality line Bls is made, According to step S220, when the motor current Im is less than the abnormal operating threshold, etc., it is indicated that the operation of the blower 50 is maintained in the abnormal operating zone 5, and the exhaust control unit 3 3G judges the motor according to the detection signal returned by the detecting unit 4G. Whether the running speed has reached the highest speed, that is, the maximum speed of the motor operation, as in step S230. ...when the motor running speed has reached the maximum speed, it means that the blower operation has reached the limit, but the ignition control unit 1() still cannot discharge all the exhaust gas generated by the second combustion, so the exhaust control unit 30 will further Determine the motor laser chip set value, such as step (four) 3. "疋不小于过风压 When the motor running speed has reached the maximum speed and the motor's pressure setting value, it means that the forced exhaust water heater 1 still has the opportunity to operate the blower 50 through compensation. Pull back and make the moving zone, so the operation of the forced exhaust water heater 1 returns to the step S210, and the exhaust control unit 3 () will still drive the blower% to try to control the ignition. Burning _burn forced vented water heater 1 and measuring the blower 50 = 12 1308630 rpm:!!, reaching the maximum speed, venting hot handle 丨 ^ 2 wind & material, face strong at this time Making pull __4;:=two-party=, the transport is very according to step S230, then enter_^; 7' when the motor running speed has not reached the maximum turn y has reached two = to adjust the motor speed of the speed adjustment value 2 ~ J upper limit (that is, the motor speed setting can be adjusted: row = unit 3. Whether it is possible to control the lifting blower 5〇 to supplement the ability of the detection fan 50 to exhaust the combustion exhaust gas, such as the step do 祠 whole value (10) shame limit, not only _ Row = boundary wind pressure may be too large, or forced exhaust water heater It even indicates that the current forced exhaust water heater i has the ability to test the exhaust gas, and the exhaust control early 7G 30 will advance the ignition control unit 1 to stop burning the gas and block the supply of gas, as in step S243. The speed adjustment value has not reached the upper limit, indicating that although the external venting water heater may be too large, the exhaust vent of the forced venting water heater 1 may be blocked, but the current vented water heater ί can still compensate the blower 5 The exhaust air control unit 30 further controls the rotational speed of the blower 5〇 motor lifting operation, and measures the value of the motor current Im through the detecting unit 4〇 at any time, as in step S250. Finally, the exhaust air is exhausted. The control unit 3 further determines whether the motor current after the lifting speed is still less than the abnormal operating threshold, as in step S26. When the adjusted motor current is still less than the abnormal operating threshold, return to step 13 1308630 S230, repeating the above. The steps until the motor current rises above the abnormal actuation threshold, that is, the motor must be operated by The abnormal actuation zone 诅 returns to the control actuation zone Π. When the adjusted motor current is greater than the abnormal actuation threshold, that is, the operation of the motor has been returned from the abnormal actuation zone to the control actuation zone, the forced venting water heater 1 The operation will return to step S210, continue to burn the gas, and repeat the above steps to ensure the ability of the forced exhaust water heater 1 to discharge the combustion exhaust gas. Therefore, the combustion caused by the above-described forced exhaust type water heater 1 in monitoring the emission of combustion gas In the step of exhaust gas, it can be known that if the forced discharge type water heater 1 can smoothly discharge the combustion exhaust gas and the mixing ratio of gas to air reaches a suitable combustion condition, the blower 5 must operate in the normal operation zone I or control. In the active zone, especially the normal operating critical line b between the normal operating zone j and the control actuating zone ,, when the value of the motor current Im is equal to the normal operating threshold on the normal operating critical line B, not only can it be maintained Normal exhaust conditions also save power consumed by motor operation. In this way, under the condition that the forced exhaust water heater can be operated normally, the gas introduced by the ignition control unit 1 can be properly mixed with the air to achieve proper combustion conditions and ensure a good combustion condition. That is to say, it maintains high thermal efficiency and low combustion exhaust gas value. a. The advantage provided by the present invention is that when the blower is exhausted, if the wind pressure is too large or the exhaust vent is blocked, the motor current and the rotational speed of the motor run will be degraded to determine the strong (four) gas hot wood. Whether the external wind pressure is too large or not, and whether the exhaust port is blocked, it is judged whether the forced exhaust type water heater can normally discharge the combustion exhaust gas. Another advantage provided by the present invention is that the motor current and the proportional valve current are used as the basis for the difficult motor speed. 14 1308630 Another advantage provided by the present invention is that the abnormal operating threshold value, the control actuation threshold value and the over-wind pressure setting value in the reference value corresponding to the motor current and the proportional valve current are used as the basis for determining the motor rotation speed. 6. A further advantage provided by the present invention is that when the exhaust vent of the forced venting water heater is severely blocked, or the outside wind pressure continues to be excessive, the combustion of the gas will be stopped, and the supply of gas will be blocked to ensure the user's Safety. Another advantage provided by the present invention is that when the exhaust vent of the forced venting water heater is not seriously blocked, or the external wind pressure is still acceptable, Li Xiao increases the speed of the horse to compensate for the exhaust combustion of the forced venting water heater. Another advantage of the exhaust gas is that the gas introduced by the ignition control unit can be properly mixed with the air to ensure that the stray venting heat f is working for this purpose.
【圖式簡單說明】[Simple description of the map]
1308630 第三圖係為本發明内容之強制排氣式熱水器執行安全 控制的流程圖。 【主要元件符號說明】 強制排氣式熱水器 1 點火控制單元 10 給水單元 20 排風控制單元 30 檢測單元 40 * 送風機 50 供水單元 2 161308630 The third figure is a flow chart for performing safety control of the forced exhaust type water heater of the present invention. [Main component symbol description] Forced vented water heater 1 Ignition control unit 10 Water supply unit 20 Exhaust control unit 30 Detection unit 40 * Fan 50 Water supply unit 2 16