M442800 五、新型說明： 【新型所屬之技術領域】 本新型是有關於一種熱水供應裝置，特別是指一種電 熱水瓶的電容式防空燒保護裝置。 【先前技術】 熱水瓶<為了防止在缺水的情形下繼續加熱，造 成火災等危險，所以經常會使用一熱電偶（Therm〇c〇uple) 元件，用來债測該電熱水瓶内的溫度是否超過一安全範園 .，一旦溫度超過該安全範圍則停止加熱。 然而，該熱電偶元件的靈敏度低、熱電勢小，且在高 溫環境使用一段時間後，容易發生金屬疲勞，所以偵測出 的度誤差會隨著使用時間增加，以致於造成停止加熱的 時機可能延遲，讓電熱水瓶的使用安全受到影響。 【新型内容】 因此，本新型的目的在於提供一種能提高安全性的電 熱水瓶的電容式防空燒保護裝置。 於是'，本新型電熱水瓶的電容式防空燒保護裝置適用 於一電熱水瓶，該電熱水瓶包含一用於儲水的内膽，及一 用於加熱該内膽内部空間的加熱器，該内膽包括一底部及 一位於該底部上方的滿水位部，該電容式防空燒保護裝置 .包含一量測管、一第一電容單元、一第二電容單元，及一 控制單元。 該量測管連通到該内膽的底部，並沿該内膽的高度方 向延伸。 3 該第一電容單元包括兩個設置於該量測管的第一感應 電極，及一電連接於該等第一感應電極的第一轉換模組， 該等第一感應電極設置的高度對應於該内膽的底部，且相 對設置於該量測管的相反兩側，該等第一感應電極之間所 產生的一第一電容量是經由該第一轉換模組量測與輸出。 該第二電容單元包括兩個設置於該量測管的第二感應 電極，及一電連接於該等第二感應電極的第二轉換模組， 該等第二感應電極設置的高度高於該内膽的滿水位部，且 相對設置於該量測管的相反兩側，該等第二感應電極之間 所產生的一第二電容量是經由該第二轉換模組量測與輸出 0 該控制單元電連接於該第一電容單元與該第二電容單 元，並用於電連接該加熱器，該控制單元内建有一標準電 容量，並接收該第一電容量與該第二電容量，該控制單元 能在該第一電容量減去該第二電容量的結果不大於該標準 電容量時，關閉該加熱器的運作，以及能在該第一電容量 減去第二電容量的結果大於該標準電容量時，允許該加熱 器的運作。 本新型的有益效果在於：由於該量測管是藉由連通管 原理取得與該内膽相同的水面高度，且該等第二感應電極 設置的高度高於該内膽的滿水位部，所以該等第二感應電 極之間所產生的第二電容量不會有水介入發生變化，該等 第一感應電極設置的位置則對應於該内膽的底部，使得該 第一電容量會受到有水或缺水的影響產生變化，因此使用 該弟—電容量作為— … 知疋的參考值，並計算該第一電容 準二—电谷量的差值’將能有效提高判斷水位高低的 伞西又Λ外’由於採用電容原理獲得判斷水位高低，不 乂該电谷式防空燒保護裝置能有效降低高 7兄對電子零件的影響，避免-般使用熱電偶元件來防 止空燒的缺點，使得偵測低水位並停止加熱的時機能長久 保持準確’進而達到提高安全性的使用功效。 【實施方式】 有關本新型之前述及其它技術内容、特點與功效，在 以下配5參考圖式之較佳實施例的詳細說明中，將可清楚 的呈現。 如圖1、2所示，本新型電熱水瓶的電容式防空燒保護 裝置200的較佳實施例適用於一電熱水瓶9〇,該電熱水瓶 90包含一用於儲水的内膽91,及一用於加熱該内膽91内 部空間的加熱器92，該内膽91包括一底部911及一位於該 底。卩911上方的滿水位部912，該電容式防空燒保護裝置 200包含一量測管20、一第一電容單元3〇、一第二電容單 元40、一控制單元50 ’及一提示單元60。 該量測管20包括一連通到該内膽91的底部911的連接 段21，及一沿該内膽91的高度方向延伸且連通於該連接段 21的量測段22，在本實施例中，該量測段22呈扁平的管 狀，且採用透光材質。 該第一電容單元30包括兩個設置於該量測管2〇的第 一感應電極31，及一電連接於該等第一感應電極31的第一 轉換模組32，該笙笛 „ m 〇1 '"夺弟一感應電極31設置的高度對應於該内 膽91的底部，且相祖< 班 望隹、 相對5又置於該量測管20的相反兩側，該 寻弟—感應電極M442800 V. New description: [New technical field] The present invention relates to a hot water supply device, in particular to a capacitive anti-air protection device for an electric hot water bottle. [Prior Art] Thermos < In order to prevent the heating from being continued in the absence of water, causing a fire or the like, a thermocouple (Therm〇c〇uple) element is often used to measure whether the temperature in the electric thermos is More than one safety fan park. Once the temperature exceeds the safe range, the heating is stopped. However, the thermocouple element has low sensitivity, small thermoelectric potential, and is prone to metal fatigue after being used for a period of time in a high temperature environment, so the detected degree error may increase with the use time, so that the timing of stopping the heating may be caused. Delays, the safety of the use of electric thermos is affected. [New content] Therefore, the object of the present invention is to provide a capacitive anti-air-fire protection device for an electric thermos bottle which can improve safety. Thus, the capacitive air-defense protection device of the novel electric hot water bottle is suitable for an electric hot water bottle, the electric hot water bottle comprises a inner tank for storing water, and a heater for heating the inner space of the inner tank, the inner tank The utility model comprises a bottom part and a full water level part located above the bottom. The capacitive air defense protection device comprises a measuring tube, a first capacitor unit, a second capacitor unit and a control unit. The measuring tube is connected to the bottom of the inner tube and extends along the height of the inner tube. The first capacitor unit includes two first sensing electrodes disposed on the measuring tube, and a first converting module electrically connected to the first sensing electrodes, and the heights of the first sensing electrodes are set corresponding to A bottom portion of the inner tube and opposite sides of the measuring tube are oppositely disposed, and a first capacitance generated between the first sensing electrodes is measured and outputted through the first conversion module. The second capacitor unit includes two second sensing electrodes disposed on the measuring tube, and a second switching module electrically connected to the second sensing electrodes. The second sensing electrodes are disposed at a higher height than the second sensing unit. a full water level portion of the inner tank and oppositely disposed on opposite sides of the measuring tube, a second capacitance generated between the second sensing electrodes is measured and outputted through the second conversion module. The control unit is electrically connected to the first capacitor unit and the second capacitor unit, and is configured to electrically connect the heater, the control unit has a built-in standard capacitance, and receives the first capacitor and the second capacitor. The control unit can turn off the operation of the heater when the result of subtracting the second capacitance from the first capacitance is not greater than the standard capacitance, and the result of subtracting the second capacitance from the first capacitance is greater than The standard allows for the operation of the heater. The utility model has the beneficial effects that: since the measuring tube obtains the same water surface height as the inner tube by the connecting tube principle, and the second sensing electrodes are disposed at a height higher than the full water level portion of the inner tube, the The second capacitance generated between the second sensing electrodes is not changed by the water intervention, and the positions of the first sensing electrodes are corresponding to the bottom of the inner tank, so that the first capacitance is subject to water. Or the influence of water shortage changes, so using the brother-capacity as the reference value of the knowledge, and calculating the difference between the first capacitance and the second-electricity valley amount will effectively improve the height of the water level. Λ 外's use of the principle of capacitance to determine the water level, not to mention the electric valley air defense protection device can effectively reduce the impact of high 7 brothers on electronic components, avoid the use of thermocouple components to prevent the disadvantages of air-burning, making Detect The timing of measuring the low water level and stopping the heating can be kept accurate for a long time, thereby improving the safety. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. As shown in FIG. 1 and FIG. 2, the preferred embodiment of the capacitive air-defense protection device 200 of the present electric hot water bottle is applicable to an electric hot water bottle 9 〇, the electric hot water bottle 90 includes a tank 91 for storing water, and a A heater 92 for heating the inner space of the inner casing 91. The inner casing 91 includes a bottom portion 911 and a bottom portion. The capacitive anti-air protection device 200 above the 911 includes a measuring tube 20, a first capacitor unit 3, a second capacitor unit 40, a control unit 50' and a prompt unit 60. The measuring tube 20 includes a connecting portion 21 connected to the bottom portion 911 of the inner casing 91, and a measuring portion 22 extending in the height direction of the inner casing 91 and communicating with the connecting portion 21, in this embodiment. The measuring section 22 has a flat tubular shape and is made of a light transmissive material. The first capacitor unit 30 includes two first sensing electrodes 31 disposed on the measuring tube 2, and a first converting module 32 electrically connected to the first sensing electrodes 31. The flute „m 〇 1 '" The height of the sensor electrode 31 is set to correspond to the bottom of the inner tank 91, and the phase ancestor < class 隹 隹, relative 5 is placed on the opposite side of the measuring tube 20, the brother- Induction electrode
之間所產生的一第一電容量是經由該第 一轉換模組32 |制彻认L '、’、輸出’該第一轉換模組32是電容量 檢測電路，力士 & & , , &例中’該第一轉換模組32採用交流電 橋電路。 _ 一 包今單元40包括兩個設置於該量測管20的第 / 電極41 ’及—電連接於該等第二感應電極“的第二 換模組42，該等第二感應電極41設置的高度高於該内膽鲁 的滿水位。p 912 ’且相對設置於該量測管2〇的相反兩側 ，該等第二感應電極41之間所產生的-第二電容量是經由 該f二轉換模組42量測與輸出，該等第一感應電極31與 〇亥寺第^一感應電極41分为丨罢曰 “ 刀別δ又置於5亥ϊ測段22，該第二轉換 模組42是電容量檢測電路，在本實拖例中，該第二轉換模 組42採用交流電橋電路。 :控制單元50電連接於該第一電容單元3〇與該第二 電容單元4〇，並用於電連接該加熱器92,該控制單元5〇 · 内建有-標準電容量，並接收該第一電容量與該第二電容 量，該控制單元50能在該第—電容量減去該第二電容量的 結果不大於該標準電容量時，_該加熱器％的運作，以 及能在該第一電容量減去第二電容量的結果大於該標準電 容量時，允許該加熱器92的運作。 該提示單元60電連接該控制單元5〇，該控制單元 還能在該第一電容量減去該第二電容量的結果不大於該標 M442800 準電容量時，經由該提示單元60輸出一提示信號，在本實 施例辛，該提示單元60採用蜂鳴器，該提示信號採用聲音 信號。 藉此，由於該量測管20是藉由連通管原理取得與該内 膽相同的水面高度，且該等第二感應電極41設置的高度高 於該内膽91的滿水位部912，所以該等第二感應電極41之 間所產生的第二電容量不會有水介入發生變化，該等第一A first capacitance generated between the first conversion module 32 is made through the first conversion module 32. The first conversion module 32 is a capacitance detecting circuit, and the electric force &&& In the example, the first conversion module 32 uses an AC bridge circuit. The first unit 40 includes two second electrodes 42' disposed on the measuring tube 20 and a second switching module 42 electrically connected to the second sensing electrodes. The second sensing electrodes 41 are disposed. The height is higher than the full water level of the inner tube. The p 912 ' is oppositely disposed on opposite sides of the measuring tube 2, and the second capacitance generated between the second sensing electrodes 41 is via the The f-conversion module 42 measures and outputs, and the first sensing electrodes 31 and the first sensing electrode 41 of the 〇hai Temple are divided into 丨 曰 曰 δ δ δ 又 又 又 又 又 又 又 又 又 5 5 , , , The conversion module 42 is a capacitance detecting circuit. In the present example, the second conversion module 42 uses an AC bridge circuit. The control unit 50 is electrically connected to the first capacitor unit 3〇 and the second capacitor unit 4〇, and is used for electrically connecting the heater 92. The control unit has built-in standard capacitance and receives the first a capacitance and the second capacitance, the control unit 50 can operate the heater % when the result of subtracting the second capacitance from the first capacitance is not greater than the standard capacitance, and The operation of the heater 92 is permitted when the result of subtracting the second capacitance from the first capacitance is greater than the standard capacitance. The prompting unit 60 is electrically connected to the control unit 5, and the control unit can output a prompt via the prompting unit 60 when the result of subtracting the second capacitance from the first capacitance is not greater than the standard capacitance of the standard M442800. The signal, in the present embodiment, is that the prompting unit 60 uses a buzzer, and the prompting signal uses a sound signal. Therefore, since the measuring tube 20 obtains the same water surface height as the inner tube by the communication tube principle, and the second sensing electrodes 41 are disposed at a height higher than the full water level portion 912 of the inner tank 91, the The second capacitance generated between the second sensing electrodes 41 does not change with water intervention, and the first
感應電極31設置的位置則對應於該内膽91的底部91丨，使 得該第一電容量會受到有水或缺水的影響產生變化因此 使用该第二電容量作為一個穩定的參考值，並計算該第一 電谷置與該第二電容量的差值，將能有效提高判斷水位高 低的準確度。 回 在本實施例中，若忽略該量測f 2G的介電係數影響， 且該等第-感應電極31與該等第二感應電極4 :The position of the sensing electrode 31 is corresponding to the bottom 91丨 of the inner tank 91, so that the first capacitance is changed by the influence of water or water shortage, so the second capacitance is used as a stable reference value, and Calculating the difference between the first electric valley and the second electric capacity can effectively improve the accuracy of determining the water level. In this embodiment, if the influence of the dielectric coefficient of the measurement f 2G is ignored, and the first sensing electrodes 31 and the second sensing electrodes 4 are:
的結構，則該等第二感應電極41之間是—直以介 ^ 1的空氣作為介電質，該等第-感應電極31之間在有水 ^會以"電係數約為80的一般飲用水作為介電質，因此 在不缺水、沒有空燒的情形下，該第一電容量與該第二電 容量的差值最高能夠達到8G倍，如此大的差值使得判斷低 水位的情形變得容易，判斷的準確度大幅提昇。 此外，由於採用電容原理獲得判斷水位高低，不需要 熱傳導’所以該電容式防空燒保護裝i雇能有效降低高 溫：：對電子零件的影響，避免一般使用熱電偶元件來防 、7〇的缺點使得偵測低水位並停止加熱的時機能長久 7 M442800 保持準確，進而達到提高安全性的使用功效。 惟以上所述者，僅為本新型之較佳實施例而已，當不 能以此限定本新型實施之範圍，即大凡依本新型申請專利 範圍及說明書内容所作之簡單的等效變化與修飾，皆仍屬 本新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一示意圖，說明本新型電熱水瓶的電容式防空 燒保護裝置的較佳實施例；及 圖2是-立體圖’說明該較佳實施射，—量測管、 兩個第—感應電極，及兩«二感應電極的組成結構。 M442800 【主要元件符號說明】 200… •…電容式防空燒 42·.··· •…第二轉換模組 保護裝置 50••… •…控制單元 20…… •…里測管 60·.... •…提不單元 21…… …·連接段 90…·. •…電熱水瓶 22…… …‘里測段 91 ••… …·内膽 30…… •…第一電容單元 911… …·底部 31…… •…第一感應電極 912… •…滿水位部 32…… …第一轉換模組 92 •…加熱态 40…… …第一電容單元 41…… …第二感應電極In the structure, the second sensing electrodes 41 are directly connected to each other by using air as the dielectric material, and between the first sensing electrodes 31, there is a water having an electric coefficient of about 80. Generally, drinking water is used as a dielectric material. Therefore, in the case of no shortage of water and no air burning, the difference between the first capacitance and the second capacitance can be up to 8 G times, and such a large difference makes the judgment of the low water level. The situation becomes easier and the accuracy of the judgment is greatly improved. In addition, due to the use of the capacitor principle to determine the water level, no heat conduction is required. Therefore, the capacitive anti-air-fire protection device can effectively reduce the high temperature: the influence on the electronic components, avoiding the general use of thermocouple components to prevent, 7 defects This makes it possible to detect the low water level and stop the heating for a long time. The 7 M442800 is kept accurate, thus improving the safety. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent changes and modifications made by the present invention and the contents of the specification are all It is still within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a preferred embodiment of a capacitive air-defense protection device for a novel electric hot water bottle; and FIG. 2 is a perspective view showing the preferred embodiment, a measuring tube, and two The first - sensing electrode, and the composition of the two « two sensing electrodes. M442800 [Description of main component symbols] 200... •...Capacitive air defense burning 42·····...Second conversion module protection device 50••... •...Control unit 20...•...In-tube 60.. .. •...not unit 21.........·connection section 90...·.•...electric hot water bottle 22... ...'in the inner segment 91••.........the inner tank 30...•...the first capacitive unit 911... • bottom 31... • ... first sensing electrode 912... • ... full water level portion 32 ... ... first conversion module 92 • ... heating state 40 ... ... first capacitor unit 41 ... ... second sensing electrode