200933102 九、發明說明： 【發明所屬之技術領域】 本發明與儲熱式電熱水器有關，特別是 熱式電熱水器之陽極棒損耗偵測裝置。 —種儲 【先前技術】 ❹ 15 傳統儲熱式電熱水器包含有一用以盛裝 了避免内膽因長期盛裝水而被水中的酸性物 二為 了會在内膽的内壁塗上-層輕作為保護層之外 = 裝設-陽極棒(如鎂棒)’使陽極棒伸入内膽中：會： 此情況下’陽極棒與⑽同軸水__電 瑰 成電池，陽極棒為陽極，内膽為陰極，因此，若内^ / 壁因搪㈣毛細孔而有雜的情況，腐贿的 ^ 極棒的金屬鑛層所覆蓋，經過長時間的侧，陽極 漸損耗掉’内膽敢好無損，用以額延長峨使 的目的。 © 然而，陽極棒會因各地區水質的不同而有損耗時間的 不同，為了要了解陽極棒的損耗情形，必須打開儲熱式電 熱水器的上蓋，並放掉内膽中的水之後，再將陽極棒取出 檢視；而且，這些檢測動作又必須由相關的檢測人員來執 2〇行，實在相當麻煩與不方便，但是若沒有及時更換陽極棒， 導致内膽在檢測時才發現已出現腐蝕的情況，使用者也就 必須花費更大的成本來更換整個内膽。因此，傳統儲熱式 電熱水器在檢測陽極棒的損耗情形時很容易帶給使用者困 擾與不便。 4 200933102 【發明内容】 本發月之主要目的在於提供一種儲熱式電熱水器之陽 極棒損耗偵測裝置，其可偵測陽極棒的損，用以提 5醒使用者及時更換陽極棒來延長内膽的使用壽命。 為達$上述目的，本發明之陽極棒損耗偵測裝置包含 有-供電單元、一制電路與至少一警示器。該供電單元 ❹ 可產生一工作電流；該偵測電路接收一内膽與一陽極棒之 間產生的-保護電流與該工作電流，並偵測該保護電流的 1〇變化而產生一偵測訊號；該警示器接收該债測訊號而產生 一警示訊號。 藉此，當該陽極棒消耗完畢時，該偵測電路將會透過 該偵測訊號來啟動該警示器，使該警示器產生一警示訊 號用X &示使用者該陽極棒已損耗完畢，讓使用者可立 15即通知相關的人員進行更換該陽極棒之動作。 【實施方式】 茲配合圖式列舉以下較佳實施例，用以對本發明之結 構及功致進行詳細說明；其中所用圖式先簡要說明如下： 20 第圓為本發明一較佳實施例之電路圖； 第〜圖為本發明一較佳實施例之方塊圖；以及 第三圖為本發明一較佳實施例之流程圖。 明參閱第一圖與第二圖，為本發明一較佳實施例之儲 熱式電熱水器（10)之陽極棒損耗偵測裝置(20)，儲熱式電熱 200933102 7器（1〇)包含有—用以儲水之内膽(12)與-穿設於内膽（12) 中之陽極棒(14)，内膽⑽與陽極棒(14)之間因電位差而會 產生一保護電流。陽極棒損耗偵測裝置(20)包含有一供電單 疋(3〇)、一偵測電路(4〇)與三警示器(5〇，6〇，7〇)。 5 供電單元(30)為蓄電池（亦可將交流市電整流成直流 電），用以產生一工作電流。 偵測電路(40)接收保護電流與工作電流，並可偵測保護 ® 電流的衰減來產生一镇測訊號。 _該些警示器（50 ’ 60，70)可分別接收偵測訊號而產生不 1 〇 =的警示訊號。當偵測電路(4 〇)同時接收保護電流與工作電 机’警不器（50)係接收偵測訊號而產生綠色的燈光；當偵測 電路(40)僅接收卫作電流，警示器卿係接收偵測訊號而產 生紅色的燈光，警示器(70)則接收偵測訊號而產生聲響。當 然，在實際的設計上，只要使用其中一種警示器即可，而 15且，警示器的警示訊號不限於紅色燈光、綠色燈光或聲響， ® 亦可採用亮燈、閃爍燈光或鳴叫的方式來達到提醒使用者 的目的。 經由上述結構可知，請配合參閱第三圖，當儲水式電 熱水器（10)之内膽(12)裝滿水並通電之後，本發明將進行裝 20水確認之動作。若確認内膽中無水，警示器（60)會顯示紅色 的燈光，警示器(70)則發出聲響，用以警示使用者在内膽(12) 中裝水；若確認内膽(12)中有水，警示器(50)則會顯示綠色 的燈光’而警示器(60 ’ 70)則不會有任何顯示。當儲水式電 熱水器（10)使用一段時間後’本發明則進行陽極棒損耗的確 6 200933102 蟲。t陽極棒(14)尚未損耗完畢時，内膽(12)與陽極棒(14) 之間仍會因電位差而產生保護電流，此時的偵測電路係同 時接收保護電流與工作電流而產生偵測訊號，以控制警示 器(5〇)顯示綠色的燈光，而警示器（6〇，7〇)則不會有任何顯 5示；當陽極棒(14)已經損耗完畢，内膽(12)與陽極棒(14)之 間將不會產生保護電流’但供電單元(3〇)仍持續供應工作電 流，此時的偵測電路(40)僅接收工作電流，並透過偵測訊號 © 來控制警示器(5G)之綠色燈光雜，而控制警示器(6〇)亮^ 紅色燈光，以及控制警示器(70)發出聲響，用以警示使用者 1〇陽極棒(U)的損耗狀況。此時，使用者必須先切&電源，並 通知相關的人員進行更換陽極棒的動作。 藉此，本發明可確實地偵測出陽極棒是否已消耗完 畢，並可於陽極棒消耗完畢時提醒使用者，讓使用者可即 時聯絡相關的人員進行更換陽極棒的動作，用以延長内膽 B之使用壽命’同時增加應用本發明之儲熱式電熱水器的使 0 用便利性。 200933102 【圖式簡單說明】 第一圖為本發明一較佳實施例之電路圖。 第二圖為本發明一較佳實施例之方塊圖。 第三圖為本發明一較佳實施例之流程圖。 5 【主要元件符號說明】 内膽(12) 陽極棒損耗偵測裝置(20) 偵測電路(40) 儲熱式電熱水器（10) © 陽極棒(14) 供電單元(30) ίο 警示器（50，60，70)200933102 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a heat storage type electric water heater, in particular to an anode rod loss detecting device of a thermal electric water heater. —Storage [Prior Art] ❹ 15 Traditional thermal storage electric water heaters contain a layer of light that acts as a protective layer to prevent the inner tank from being trapped in the water by the acid in the water. Outside = installation - anode rod (such as magnesium rod) 'to make the anode rod into the inner tank: will: In this case 'anode rod and (10) coaxial water __ electric rose into a battery, anode rod is the anode, the inner tank is Cathode, therefore, if the inner ^ / wall is complicated by 搪 (4) capillary pores, the rusting bribe is covered by a very strong metal ore layer. After a long time, the anode is gradually lost. To extend the purpose of the instigation. © However, the anode rod will have different loss time depending on the water quality of each area. In order to understand the loss of the anode rod, the upper cover of the heat storage electric water heater must be opened, and the water in the inner tank must be drained. The anode rods are taken out for inspection; moreover, these inspection actions must be performed by the relevant inspectors. It is quite cumbersome and inconvenient, but if the anode rods are not replaced in time, the liners are found to be corroded when they are detected. In this case, the user must also spend more cost to replace the entire liner. Therefore, the conventional heat storage type electric water heater can easily bring trouble and inconvenience to the user when detecting the loss of the anode rod. 4 200933102 [Summary of the Invention] The main purpose of this month is to provide an anode rod loss detecting device for a heat storage electric water heater, which can detect the damage of the anode rod, and can be used to lift the anode rod in time to extend the length of the anode rod. The life of the liner. For the above purposes, the anode rod loss detecting device of the present invention comprises a power supply unit, a circuit and at least one warning device. The power supply unit ❹ can generate an operating current; the detecting circuit receives a protection current and a working current generated between a liner and an anode rod, and detects a change of the protection current to generate a detection signal. The alerter receives the debt test signal to generate a warning signal. Therefore, when the anode rod is consumed, the detecting circuit will activate the warning device through the detecting signal, so that the warning device generates a warning signal to indicate that the anode rod has been worn out by the user. Let the user can notify the relevant personnel to change the action of the anode rod. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The following description of the preferred embodiments is provided to illustrate the structure and function of the present invention. The drawings are briefly described as follows: 20 The first circle is a circuit diagram of a preferred embodiment of the present invention. The first diagram is a block diagram of a preferred embodiment of the present invention; and the third diagram is a flow chart of a preferred embodiment of the present invention. Referring to the first and second figures, an anode rod loss detecting device (20) for a thermal storage electric water heater (10) according to a preferred embodiment of the present invention, a heat storage type electric heating 200933102 7 device (1〇) includes There is a tank (12) for storing water and an anode rod (14) which is bored in the inner tank (12), and a protective current is generated between the inner tank (10) and the anode rod (14) due to a potential difference. The anode rod loss detecting device (20) comprises a power supply unit (3〇), a detection circuit (4〇) and three warning devices (5〇, 6〇, 7〇). 5 The power supply unit (30) is a battery (which can also rectify AC mains to DC) to generate an operating current. The detection circuit (40) receives the protection current and the operating current, and detects the attenuation of the protection ® current to generate a town measurement signal. _The alerters (50 ’ 60, 70) can receive the detection signal separately to generate a warning signal that is not 1 〇 =. When the detection circuit (4 〇) receives the protection current and the working motor 'the alarm device (50) receives the detection signal to generate a green light; when the detection circuit (40) only receives the Guard current, the warning device The detection signal is received to generate a red light, and the warning device (70) receives the detection signal to generate a sound. Of course, in actual design, only one type of warning device can be used, and the warning signal of the warning device is not limited to red light, green light or sound, and the light can be illuminated, flashed or tweeted. Reach the purpose of reminding users. According to the above configuration, referring to the third figure, when the inner tank (12) of the water storage type electric water heater (10) is filled with water and energized, the present invention performs the operation of checking 20 water. If it is confirmed that there is no water in the tank, the warning device (60) will display red light, and the warning device (70) will sound to alert the user to fill the inner casing (12); if the inner liner (12) is confirmed With water, the warning (50) will show a green light' and the warning (60' 70) will not show anything. When the water storage type electric water heater (10) is used for a period of time, the present invention performs the anode rod loss. When the anode rod (14) has not been lost, the protection current will still be generated between the inner tank (12) and the anode rod (14) due to the potential difference. At this time, the detection circuit receives the protection current and the working current to generate the detection. The test signal is displayed by the control indicator (5〇), while the warning device (6〇, 7〇) will not show any indication; when the anode rod (14) has been worn out, the liner (12) There will be no protection current between the anode rod (14) but the power supply unit (3〇) will continue to supply the operating current. At this time, the detection circuit (40) only receives the operating current and is controlled by the detection signal ©. The green light of the warning device (5G) is mixed, and the control alarm (6〇) is lit ^ red light, and the control alarm (70) emits a sound to warn the user of the loss of the anode rod (U). At this point, the user must first cut & power and notify the relevant personnel to perform the action of replacing the anode rod. Thereby, the invention can reliably detect whether the anode rod has been consumed, and can remind the user when the anode rod is consumed, so that the user can immediately contact the relevant personnel to perform the action of replacing the anode rod for extending the inside. The service life of the bladder B is simultaneously increased to facilitate the use of the heat storage type electric water heater of the present invention. 200933102 BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a circuit diagram of a preferred embodiment of the present invention. The second figure is a block diagram of a preferred embodiment of the present invention. The third figure is a flow chart of a preferred embodiment of the present invention. 5 [Main component symbol description] Inner liner (12) Anode bar loss detection device (20) Detection circuit (40) Thermal storage electric water heater (10) © Anode bar (14) Power supply unit (30) ίο Warning device ( 50,60,70)