TWI504847B - A heater having detection device and method for detecting and controling the same - Google Patents
A heater having detection device and method for detecting and controling the same Download PDFInfo
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Description
本發明乃是關於一種熱水器，特別是指一種具有偵測裝置的熱水器及其偵測與控制方法。The invention relates to a water heater, in particular to a water heater with a detecting device and a detecting and controlling method thereof.
按，習知的熱水器，尤其是即熱式電熱水器，在瞬間加熱時，電源供應單元需提供較大的輸出功率，以滿足加熱需求，但因而常會使熱水器有漏電或過溫的情形發生，一般是利用漏電斷路器瞬間斷開電源以作為保護，但容易造成系統當機，此外在繼電器開關切換時，會因為突然有電力通過，而導致開關產生火花，進而使電路損壞甚至是影響使用安全。緣是，習知的熱水器確實有其需要改善之處。According to the conventional water heater, especially the instant electric water heater, when the heating is instantaneous, the power supply unit needs to provide a large output power to meet the heating demand, but this often causes the water heater to leak or overheat. Generally, the leakage circuit breaker is used to instantaneously disconnect the power supply for protection, but it is easy to cause the system to crash. In addition, when the relay switch is switched, the switch will generate sparks due to sudden power transmission, which may damage the circuit or even affect the safety of use. . The reason is that the known water heater does have something to improve.
緣是，本發明人有感上述問題之可改善，乃潛心研究並配合學理之運用，而提出一種設計合理且有效改善上述問題之本發明。The reason is that the present inventors have felt that the above problems can be improved, and that the present invention has been deliberately studied and used in conjunction with the theory, and a present invention which is reasonable in design and effective in improving the above problems has been proposed.
本發明主要解決的技術問題，在於提供一種具有偵測裝置的熱水器，其透過控制單元判斷偵測裝置的偵測結果，以控制開關單元，達到增加系統穩定性。The technical problem to be solved by the present invention is to provide a water heater having a detecting device, which determines the detection result of the detecting device through the control unit to control the switching unit to increase system stability.
為了達到上面所描述的，根據本發明之一方案，提供一種具有偵測裝置的熱水器，包括有加熱單元、電源供應單元、第一電源線、第二電源線、第一開關單元、第二開關單元、第三開關單元、漏電斷路偵測單元、及控制單元。In order to achieve the above, according to an aspect of the present invention, a water heater having a detecting device includes a heating unit, a power supply unit, a first power line, a second power line, a first switch unit, and a second switch. The unit, the third switch unit, the leakage open circuit detecting unit, and the control unit.
上述電源供應單元用以供應電力給該加熱單元；第一電源線 耦接於該電源供應單元與該加熱單元之間；第二電源線耦接於該電源供應單元與該加熱單元之間；第一開關單元耦接於該第一電源線與該加熱單元之間；第二開關單元耦接於該第二電源線與該加熱單元之間；第三開關單元耦接於該第一開關單元與該加熱單元之間；漏電斷路偵測單元耦接於該電源供應單元與該第一電源線之間、以及該電源供應單元與該第二電源線之間，該漏電斷路單元用以偵測該加熱單元及該第三開關單元的漏電流，並根據偵測結果產生一漏電訊號；控制單元耦接於該第一、第二、第三開關單元以及該漏電斷路偵測單元，該控制單元設有一漏電流特定值；當該控制單元讀取到該漏電斷路偵測單元所輸出的該漏電訊號時，該控制單元判斷該漏電訊號對應之一漏電流值與該漏電流特定值的大小關係，以控制該第一、第二、第三開關單元的截止或導通，以進一步控制該加熱單元的運作。The power supply unit is configured to supply power to the heating unit; the first power line The first power supply line is coupled between the power supply unit and the heating unit; the first switch unit is coupled between the first power line and the heating unit The second switch unit is coupled between the second power line and the heating unit; the third switch unit is coupled between the first switch unit and the heating unit; the leakage open circuit detecting unit is coupled to the power supply Between the unit and the first power line, and between the power supply unit and the second power line, the leakage breaking unit is configured to detect leakage currents of the heating unit and the third switching unit, and according to the detection result Generating a leakage signal; the control unit is coupled to the first, second, and third switch units and the leakage circuit detecting unit, wherein the control unit is provided with a leakage current specific value; when the control unit reads the leakage circuit detection When the leakage signal is output by the measuring unit, the control unit determines a magnitude relationship between a leakage current value corresponding to the leakage signal and the specific value of the leakage current to control the first, second, and third switching units Or turned off, to further control the operation of the heating unit.
為了達到上面所描述的，再根據本發明之具有偵測裝置的熱水器，提供一種具有偵測裝置的熱水器之偵測與控制方法，係透過控制單元讀取偵測裝置之偵測結果並判斷後，以進行對應控制，包括以下步驟：讀取至少一漏電訊號；判斷該漏電訊號對應之一漏電流值與一漏電流特定值的大小關係；若該漏電流值高於該漏電流特定值，則立即先讓第三開關單元截止，並依序讓第二開關單元截止，以及讓第一開關單元截止，以使加熱單元停止運作，否則離開。In order to achieve the above description, according to the water heater with the detecting device of the present invention, a method for detecting and controlling a water heater having a detecting device is provided, and the detecting result of the detecting device is read through the control unit and judged. For performing corresponding control, the method includes the following steps: reading at least one leakage signal; determining a magnitude relationship between a leakage current value corresponding to the leakage signal and a specific value of a leakage current; if the leakage current value is higher than the specific value of the leakage current, Immediately, the third switching unit is turned off first, and the second switching unit is turned off in sequence, and the first switching unit is turned off, so that the heating unit stops operating, otherwise it leaves.
藉由控制單元判斷偵測裝置的偵測結果以控制開關單元，能夠達到增加系統穩定性，並避免產生火花以提昇電源線路穩定性，且具有防止電擊及防止燒毀的效果。By controlling the detection result of the detecting device to control the switching unit, the control unit can increase the stability of the system, avoid sparks to improve the stability of the power line, and have the effects of preventing electric shock and preventing burnout.
為了能更進一步瞭解本發明為達成既定目的所採取之技術、方法及功效，請參閱以下有關本發明之詳細說明、圖式，相信本發明之目的、特徵與特點，當可由此得以深入且具體之瞭解，然而所附圖式與附件僅提供參考與說明用，並非用來對本發明加以 限制者。In order to further understand the technology, method and effect of the present invention in order to achieve the intended purpose, reference should be made to the detailed description and drawings of the present invention. However, the drawings and the annexes are provided for reference and description only, and are not intended to be used in the present invention. Limiter.
101‧‧‧控制單元101‧‧‧Control unit
103‧‧‧加熱單元103‧‧‧heating unit
104‧‧‧電源供應單元104‧‧‧Power supply unit
105‧‧‧第一電源線105‧‧‧First power cord
107‧‧‧第二電源線107‧‧‧second power cord
109‧‧‧第一開關單元109‧‧‧First switch unit
111‧‧‧第二開關單元111‧‧‧Second switch unit
113‧‧‧第三開關單元113‧‧‧ Third switch unit
114‧‧‧驅動電路114‧‧‧Drive circuit
115‧‧‧漏電斷路偵測單元115‧‧‧Leakage circuit detection unit
116‧‧‧放大電路116‧‧‧Amplification circuit
117‧‧‧系統溫度偵測單元117‧‧‧System Temperature Detection Unit
119‧‧‧進水量檢知單元119‧‧‧ Influent detection unit
121‧‧‧進水溫度檢知單元121‧‧‧Inlet water temperature detection unit
123‧‧‧出水溫度檢知單元123‧‧‧Water temperature detection unit
125‧‧‧溫度設定單元125‧‧‧Temperature setting unit
127‧‧‧保護單元127‧‧‧protection unit
129‧‧‧電壓檢知單元129‧‧‧Voltage detection unit
131‧‧‧顯示單元131‧‧‧Display unit
S201~S231‧‧‧步驟S201~S231‧‧‧Steps
S2111~S2123‧‧‧步驟S2111~S2123‧‧‧Steps
S2171~S2183‧‧‧步驟S2171~S2183‧‧‧Steps
圖1為本發明之具有偵測裝置的熱水器的一種實施例之方塊圖。1 is a block diagram of an embodiment of a water heater having a detecting device of the present invention.
圖2為本發明之具有偵測裝置的熱水器的一種實施例之系統流程圖。2 is a system flow diagram of an embodiment of a water heater with a detection device of the present invention.
圖3為本發明之具有偵測裝置的熱水器的漏電斷路偵測與控制方法之流程圖。3 is a flow chart of a method for detecting and controlling leakage current of a water heater with a detecting device according to the present invention.
圖4為本發明之具有偵測裝置的熱水器的系統溫度偵測與控制方法之流程圖。4 is a flow chart of a system temperature detecting and controlling method for a water heater with a detecting device according to the present invention.
請參閱圖1，為具有偵測裝置的熱水器的一種實施例之方塊圖，基本上包括有一控制單元101、一加熱單元103、一電源供應單元104、一第一電源線105、一第二電源線107、一第一開關單元109、一第二開關單元111、一第三開關單元113、及一漏電斷路偵測單元115，上述各單元可設置於熱水器的機體內部(圖略)，且本實施例的熱水器較佳係為即熱式電熱水器。Referring to FIG. 1 , a block diagram of an embodiment of a water heater having a detecting device basically includes a control unit 101 , a heating unit 103 , a power supply unit 104 , a first power line 105 , and a second power source . The line 107, a first switch unit 109, a second switch unit 111, a third switch unit 113, and a leakage open circuit detecting unit 115, the above units can be disposed inside the body of the water heater (not shown), and The water heater of the embodiment is preferably an instant electric water heater.
加熱單元103是用來將熱水器的進水作加熱，以輸出溫度較高的水，而加熱的程度是依據所接收到的電力功率大小而有所不同。電源供應單元104即是用來提供所需電力給加熱單元103，其可以為交流電源，在本實施例中的電源供應單元104係透過第一電源線105與第二電源線107供電給加熱單元103。The heating unit 103 is for heating the water inlet of the water heater to output water of a relatively high temperature, and the degree of heating varies depending on the magnitude of the received power. The power supply unit 104 is used to supply the required power to the heating unit 103, which may be an AC power source. The power supply unit 104 in this embodiment supplies power to the heating unit through the first power line 105 and the second power line 107. 103.
第一開關單元109耦接於第一電源線105與加熱單元103之間，該第一開關單元109可以是機械式開關，像是繼電器(Relay)等，其接受控制單元101的控制，在導通或截止狀態間作切換，依此決定第一電源線105是否與加熱單元103連通。第二開關單元111耦接於第二電源線107與加熱單元103之間，同樣地，該第二開關單元109也可以是機械式開關，其接受控制單元101的控制，在導通或截止狀態間作切換，依此決定第二電源線105是否與加熱單元103連通。在本實施例中，還可包括一驅動電路114，其耦接於控制單元101與第一、第二開關單元109、111之間，使控制 單元101藉以驅動第一、第二開關單元109、111在導通或截止狀態間作切換。此外，第三開關單元113耦接於第一開關單元109與加熱單元103之間，可以是電子式開關像是三端雙向可控矽開關元件(TRIAC)等，其同樣接受控制單元101的控制，在導通或截止狀態間作切換，以進一步控制第一電源線105和第二電源線107形成供電的迴路，並可調整電源供應單元104提供給加熱單元103的平均電力功率。需說明的是，唯有當控制單元101將第一開關單元109、第二開關單元111、第三開關單元113皆控制在導通的狀態下，使第一電源線105和第二電源線107形成迴路時，電源供應單元104才會供應電力給加熱單元103，讓加熱單元103能夠執行加熱的動作。另外，在控制單元101要停止電源供應單元104供電給加熱單元103時，可以立即先將第三開關單元113(或是說電子式開關)截止，再關閉第一、第二開關單元109、111，如此可避免第三開關單元113、與第一、第二開關單元109、111在開關切換時產生火花，以提昇電源線路穩定性。The first switch unit 109 is coupled between the first power line 105 and the heating unit 103. The first switch unit 109 can be a mechanical switch, such as a relay, etc., which is controlled by the control unit 101 and is turned on. Switching between the off states and the off state determines whether the first power line 105 is in communication with the heating unit 103. The second switch unit 111 is coupled between the second power line 107 and the heating unit 103. Similarly, the second switch unit 109 can also be a mechanical switch that is controlled by the control unit 101, between the on or off states. Switching is made to determine whether the second power line 105 is in communication with the heating unit 103. In this embodiment, a driving circuit 114 is further coupled between the control unit 101 and the first and second switching units 109, 111 to enable control. The unit 101 drives the first and second switching units 109, 111 to switch between on or off states. In addition, the third switch unit 113 is coupled between the first switch unit 109 and the heating unit 103, and may be an electronic switch such as a three-terminal bidirectional controllable switch element (TRIAC) or the like, which is also controlled by the control unit 101. Switching between on or off states to further control the first power line 105 and the second power line 107 to form a power supply loop, and to adjust the average power power supplied by the power supply unit 104 to the heating unit 103. It should be noted that only when the control unit 101 controls the first switch unit 109, the second switch unit 111, and the third switch unit 113 to be in an on state, the first power line 105 and the second power line 107 are formed. In the loop, the power supply unit 104 supplies power to the heating unit 103, allowing the heating unit 103 to perform the heating action. In addition, when the control unit 101 is to stop the power supply unit 104 from supplying power to the heating unit 103, the third switching unit 113 (or the electronic switch) may be immediately turned off, and then the first and second switching units 109, 111 are turned off. Therefore, the third switching unit 113 and the first and second switching units 109 and 111 can be prevented from generating sparks when the switches are switched to improve the stability of the power line.
漏電斷路偵測單元115耦接於控制單元101、電源供應單元104與第一電源線105之間、以及電源供應單元104與第二電源線107之間。漏電斷路偵測單元115較佳係為具有漏電流檢測線圈的零相比流器，用以偵測加熱單元103、第三開關單元113是否有漏電的情形發生，並根據結果產生一漏電訊號輸出至控制單元101，而控制單元101則可設有一漏電流特定值，例如為某電流臨界值或某數值區間，以於漏電訊號對應之漏電流值高於電流臨界值或超出數值區間時，使第一、第二、第三開關單元109、111、113截止，藉此第一電源線105和第二電源線107呈現斷路的狀態，讓電源供應單元104停止供電給加熱單元103。在本實施例中，還可包括一放大電路116，其耦接於控制單元101與漏電斷路偵測單元115之間，藉以將微小的漏電訊號經過放大整流整形後輸出至控制單元101，可使控制單元101易於判讀並減少誤動作的發生，增加系統穩定性。The leakage circuit detecting unit 115 is coupled between the control unit 101, the power supply unit 104 and the first power line 105, and between the power supply unit 104 and the second power line 107. The leakage current detecting unit 115 is preferably a zero current comparator having a leakage current detecting coil for detecting whether the heating unit 103 and the third switching unit 113 have leakage, and generating a leakage signal output according to the result. To the control unit 101, the control unit 101 can be provided with a leakage current specific value, for example, a current threshold value or a certain value interval, so that when the leakage current value corresponding to the leakage signal is higher than the current threshold value or exceeds the value interval, The first, second, and third switching units 109, 111, and 113 are turned off, whereby the first power source line 105 and the second power source line 107 assume an open state, and the power supply unit 104 stops supplying power to the heating unit 103. In this embodiment, an amplifying circuit 116 is further coupled between the control unit 101 and the leakage circuit detecting unit 115, so that the minute leakage signal is amplified and rectified and output to the control unit 101. The control unit 101 is easy to interpret and reduces the occurrence of malfunctions, increasing system stability.
請再次參照圖1，該具有偵測裝置的熱水器中，更可包括有一系統溫度偵測單元117、一進水量檢知單元119、一進水溫度檢知單元121、一出水溫度檢知單元123、一溫度設定單元125、一保護單元127、一電壓檢知單 元129、及一顯示單元131，上述各單元亦可設置於熱水器的機體內部。Referring to FIG. 1 again, the water heater with the detecting device further includes a system temperature detecting unit 117, a water intake detecting unit 119, an inflow water detecting unit 121, and an outlet water detecting unit 123. a temperature setting unit 125, a protection unit 127, a voltage detection list The unit 129 and the display unit 131 may be disposed inside the body of the water heater.
系統溫度偵測單元117耦接於控制單元101，且該系統溫度偵測單元117可包含有多個偵測點，其設置於熱水器內之預定位置，例如電源端子座或是交流電源線路上。系統溫度偵測單元117用以將多個偵測點所偵測到的系統溫度，產生至少一系統溫度訊號輸出至控制單元101，而控制單元101則可設有一溫度特定值，例如為某溫度臨界值或某數值區間，以於系統溫度值高於溫度臨界值或超出數值區間時，使第一、第二、第三開關單元109、111、113截止，藉此第一電源線105和第二電源線107呈現斷路的狀態，讓電源供應單元104停止供電給加熱單元103。The system temperature detecting unit 117 is coupled to the control unit 101, and the system temperature detecting unit 117 can include a plurality of detecting points disposed at predetermined positions in the water heater, such as a power terminal block or an AC power line. The system temperature detecting unit 117 is configured to output at least one system temperature signal to the control unit 101 by using the system temperature detected by the plurality of detecting points, and the control unit 101 can be configured with a temperature specific value, for example, a certain temperature. a threshold value or a value interval for turning off the first, second, and third switching units 109, 111, 113 when the system temperature value is higher than the temperature threshold or exceeding the value interval, whereby the first power line 105 and the first The second power supply line 107 assumes an open state, and causes the power supply unit 104 to stop supplying power to the heating unit 103.
進水量檢知單元119耦接於控制單元101，是用來測量進入熱水器的水量，若進水水量超過某特定數值，或是在某數值區間之內，才傳送一啟動訊號讓控制單元101正常運作，而若進水水量低於某特定數值或在某數值區間之外，便傳送一停止訊號讓控制單元101停止運作並停止加熱單元103的供電。進水量檢知單元119可以是霍爾晶片水量檢知器，利用霍爾效應來作水量的檢測，當水流量越大，進水量檢知單元119中的磁性物質(如磁鐵)旋轉的轉速越快，霍爾效應產生的頻率也就越高，所以進水量檢知單元119將霍爾效應產生的頻率經過換算，便可得知進入熱水器的水量多寡，並將數據傳送至控制單元101。值得一提的是，利用霍爾效應來偵測水量，搭配進水濾網裝置，不會因為水中髒污或是雜質而產生誤差，測量的結果會較為準確。The water intake detecting unit 119 is coupled to the control unit 101 for measuring the amount of water entering the water heater. If the water inflow exceeds a certain value or within a certain value range, a start signal is transmitted to make the control unit 101 normal. Operation, and if the amount of incoming water is below a certain value or outside a certain value range, a stop signal is transmitted to stop the control unit 101 from operating and stop the power supply of the heating unit 103. The influent amount detecting unit 119 may be a Hall wafer water amount detecting device, and uses the Hall effect to detect the amount of water. When the water flow rate is larger, the rotation speed of the magnetic substance (such as a magnet) in the influent amount detecting unit 119 is increased. Fast, the frequency generated by the Hall effect is higher, so the water intake detecting unit 119 converts the frequency generated by the Hall effect to know the amount of water entering the water heater, and transmits the data to the control unit 101. It is worth mentioning that the use of the Hall effect to detect the amount of water, with the water inlet filter device, will not cause errors due to dirt or impurities in the water, the measurement results will be more accurate.
進水溫度檢知單元121是用來偵測熱水器進水口的水溫，並產生一進水溫度訊號輸出至控制單元101。而出水溫度檢知單元123是用來偵測熱水器出水口的水溫，並產生一出水溫度訊號輸出至控制單元101，若是出水溫度太高，便會停止熱水器的運作，確保使用者不會被燙傷，並提昇熱水器線路的穩定性。The inlet water temperature detecting unit 121 is for detecting the water temperature of the water inlet of the water heater, and generates an inflow water temperature signal to be output to the control unit 101. The water temperature detecting unit 123 is configured to detect the water temperature of the water outlet of the water heater, and generate a water temperature signal to be output to the control unit 101. If the water temperature is too high, the water heater is stopped to ensure that the user is not Burns and improves the stability of the water heater line.
溫度設定單元125則是用來讓使用者設定出水的水溫，可透過把手、旋鈕或是按鍵來接收設定。溫度設定單元125在接收了使用者的設定之後，會傳送一溫度設定訊號給控制單元101，接著控制單元101便依據進水水量 訊號、進水溫度訊號、出水溫度訊號以及溫度設定訊號，來調整電源供應單元104供應給加熱單元103的電力功率，讓出水水溫能夠符合使用者的需求。The temperature setting unit 125 is for letting the user set the water temperature of the water, and can receive the setting through the handle, the knob or the button. After receiving the user's setting, the temperature setting unit 125 transmits a temperature setting signal to the control unit 101, and then the control unit 101 determines the amount of water inflow. The signal, the influent temperature signal, the water temperature signal and the temperature setting signal adjust the power supplied by the power supply unit 104 to the heating unit 103 to make the water temperature meet the needs of the user.
保護單元127耦接於控制單元101，且該保護單元127可包含有多個溫度保險絲或溫度開關，其設置於熱水器內之預定位置，當感應溫度超過額定值時，溫度保險絲會熔斷，或是當溫度升高至作動溫度值時，溫度開關受熱而立即作動，以即時保護熱水器，從而起到熱保護作用。The protection unit 127 is coupled to the control unit 101, and the protection unit 127 can include a plurality of thermal fuses or temperature switches disposed at predetermined positions in the water heater. When the induced temperature exceeds the rated value, the thermal fuse is blown, or When the temperature rises to the operating temperature value, the temperature switch is activated by the heat to immediately protect the water heater, thereby providing thermal protection.
電壓檢知單元129則是用來作電源供應單元104的供應電壓檢測，若電壓呈現不穩定或是過高過低時，便會傳送訊號給控制單元101，使其截止第一開關單元109、第二開關單元111、第三開關單元113，以停止電源供應單元104供電給加熱單元103。The voltage detecting unit 129 is used for detecting the supply voltage of the power supply unit 104. If the voltage is unstable or too high or too low, the signal is sent to the control unit 101 to turn off the first switching unit 109. The second switching unit 111 and the third switching unit 113 supply power to the heating unit 103 by stopping the power supply unit 104.
顯示單元131可以用來顯示目前使用者所設定的出水溫度、進水水量、進水溫度、目前出水溫度或是一些訊息，像是故障或出水溫度過高等等的訊息，可以是至少一個七段顯示器，利用代碼或數字的方式來顯示上述的訊息，或是用液晶顯示器以彈現出一視窗方式來顯示上述的訊息供使用者查看。The display unit 131 can be used to display the current water temperature, the amount of water entering the water, the temperature of the water entering the water, the temperature of the current water outlet, or some information, such as a fault or a high temperature of the water, which can be at least one of seven segments. The display uses the code or number to display the above message, or uses the liquid crystal display to display the above message for the user to view.
請參閱圖2，為前述具有偵測裝置的熱水器的一種實施例之系統流程圖。當熱水器於待機狀態且使用者按下電源開關時(S201)，若判斷加熱單元103已於運作的狀態(S203)，便會停止供應電力給加熱單元103(S204)，並結束；若否，則進入溫度設定，供使用者設定溫度(S205)，並可進一步透過顯示單元131顯示使用者設定的溫度，若使用者未設定溫度，則顯示預設溫度(例如為42度)。接著，進行熱水器的偵測，例如供應電壓的偵測(S207)、保護裝置的偵測(S209)、漏電斷路的偵測(S211)、進水溫度的偵測(S213)、出水溫度的偵測(S215)、系統溫度的偵測(S217)、及水量的偵測(S219)，進行完上述的偵測後，若無異常狀態，且進入熱水器的水量大於某特定數值(例如3公升)便可透過顯示單元131顯示目前熱水器出水口的水溫(S221)，並依序導通第二開關單元111(S223)、第一開關關單元109(S225)，最後導通第三開關單元113(S227)以形成供電迴路，使電源供 應單元104能夠供應電力給加熱單元103，讓加熱單元103執行加熱的動作(S229)。加熱單元103加熱後，控制單元101將熱水器出水口的水溫與使用者設定的溫度或是預設溫度進行比較，在本實施例中，當熱水器出水口的水溫等於使用者設定的溫度±1度或者是等於預設溫度±1度(S231)，即結束；若為否，則再次進入設定溫度的步驟，並再次進行熱水器的偵測後，讓加熱單元103繼續執行加熱的動作，直到熱水器出水口的水溫等於使用者設定的溫度±1度，或者是等於預設溫度±1度，才結束。Please refer to FIG. 2, which is a system flowchart of an embodiment of the foregoing water heater with a detecting device. When the water heater is in the standby state and the user presses the power switch (S201), if it is determined that the heating unit 103 is in the operating state (S203), the supply of power to the heating unit 103 is stopped (S204), and the process ends; if not, Then, the temperature setting is entered for the user to set the temperature (S205), and the temperature set by the user can be further displayed through the display unit 131. If the temperature is not set by the user, the preset temperature (for example, 42 degrees) is displayed. Then, the detection of the water heater, such as the detection of the supply voltage (S207), the detection of the protection device (S209), the detection of the leakage circuit (S211), the detection of the inlet water temperature (S213), the detection of the water temperature Measure (S215), system temperature detection (S217), and water quantity detection (S219). After the above detection, if there is no abnormal state, and the amount of water entering the water heater is greater than a certain value (for example, 3 liters) The water temperature of the current water outlet of the water heater can be displayed through the display unit 131 (S221), and the second switch unit 111 (S223), the first switch off unit 109 (S225), and the third switch unit 113 are finally turned on (S227). ) to form a power supply circuit, so that the power supply The response unit 104 can supply power to the heating unit 103, and causes the heating unit 103 to perform an action of heating (S229). After the heating unit 103 is heated, the control unit 101 compares the water temperature of the water heater outlet with the temperature set by the user or the preset temperature. In this embodiment, when the water temperature of the water outlet of the water heater is equal to the temperature set by the user. 1 degree is equal to the preset temperature ±1 degree (S231), that is, if it is no, then the step of entering the set temperature again, and after detecting the water heater again, let the heating unit 103 continue to perform the heating action until The water temperature of the water heater outlet is equal to the temperature set by the user ± 1 degree, or equal to the preset temperature ± 1 degree.
而前述步驟S211中，請參閱圖3，其漏電斷路偵測與控制方法的詳細流程如下：漏電斷路偵測單元115偵測到電流變化，並產生一漏電訊號輸出至控制單元101，而控制單元101內設有電流臨界值(例如29mA)，當控制單元101讀取該漏電訊號後(S2111)，控制單元101判斷該漏電訊號對應之一漏電流值與電流臨界值的大小關係(S2113)，在本實施例中，控制單元101判斷該漏電流值是否大於29mA。若否，則跳離步驟S211；若是，控制單元101即產生控制信號先讓第三開關單元113立即截止(S2115)，並依序讓第一開關單元109截止(S2117)，第二開關單元111截止(S2119)，使供電迴路斷路，以便停止供應電力給加熱單元103，使加熱單元103停止運作(S2121)。接著，透過顯示單元119顯示錯誤訊息(例如熱水器漏電的訊息)供使用者查看(S2123)，即離開步驟S211。藉由上述步驟，以保護熱水器的加熱單元103、第三開關單元113或其他元件或讓使用者不至承受到電擊，達到警示及安全的效果。In the foregoing step S211, referring to FIG. 3, the detailed flow of the leakage breaking detection and control method is as follows: the leakage breaking detecting unit 115 detects the current change, and generates a leakage signal output to the control unit 101, and the control unit A current threshold value (for example, 29 mA) is provided in the 101. After the control unit 101 reads the leakage signal (S2111), the control unit 101 determines a magnitude relationship between the leakage current value corresponding to the leakage signal and the current threshold value (S2113). In the present embodiment, the control unit 101 determines whether the leakage current value is greater than 29 mA. If not, the process proceeds to step S211; if so, the control unit 101 generates a control signal to immediately turn off the third switching unit 113 (S2115), and sequentially turns off the first switching unit 109 (S2117), and the second switching unit 111 By the end (S2119), the power supply circuit is disconnected to stop supplying power to the heating unit 103, and the heating unit 103 is stopped (S2121). Then, an error message (for example, a message indicating that the water heater is leaking) is displayed through the display unit 119 for the user to view (S2123), that is, the process proceeds to step S211. Through the above steps, the heating unit 103, the third switch unit 113 or other components of the water heater are protected or the user is not subjected to an electric shock, thereby achieving the warning and safety effect.
另外，前述步驟S217中，請參閱圖4，其系統溫度偵測與控制方法的詳細流程如下：系統溫度偵測單元117依據多個偵測點所偵測到的溫度，以產生至少一系統溫度訊號輸出至控制單元101，而控制單元101內設有溫度臨界值(例如65度)，當控制單元101讀取該系統溫度訊號後(S2171)，控制單元101判斷該系統溫度訊號對應之一溫度值與溫度臨界值的大小關係 (S2173)，在本實施例中，控制單元101判斷該溫度值是否大於65度。若否，則跳離步驟S217；若是，控制單元101即產生控制信號先讓第三開關單元113立即截止(S2175)，並依序讓第一開關單元109截止(S2177)，第二開關單元111截止(S2179)，使供電迴路斷路，以便停止供應電力給加熱單元103，使加熱單元103停止運作(S2181)。接著，透過顯示單元131顯示錯誤訊息(例如熱水器溫度過高的訊息)供使用者查看(S2183)，即離開步驟S217。藉由上述步驟，以保護熱水器的加熱單元103或其他元件不被燒毀，達到警示及安全的效果。In addition, in the foregoing step S217, referring to FIG. 4, the detailed process of the system temperature detecting and controlling method is as follows: the system temperature detecting unit 117 generates at least one system temperature according to the temperature detected by the plurality of detecting points. The signal is output to the control unit 101, and the control unit 101 is provided with a temperature threshold (for example, 65 degrees). After the control unit 101 reads the system temperature signal (S2171), the control unit 101 determines that the system temperature signal corresponds to a temperature. The relationship between the value and the temperature threshold (S2173), in the present embodiment, the control unit 101 determines whether the temperature value is greater than 65 degrees. If not, the process proceeds to step S217; if so, the control unit 101 generates a control signal to immediately turn off the third switching unit 113 (S2175), and sequentially turns off the first switching unit 109 (S2177), and the second switching unit 111 At the end (S2179), the power supply circuit is disconnected to stop supplying power to the heating unit 103, and the heating unit 103 is stopped (S2181). Then, an error message (for example, a message that the temperature of the water heater is too high) is displayed through the display unit 131 for the user to view (S2183), that is, the process proceeds to step S217. Through the above steps, the heating unit 103 or other components protecting the water heater are not burned, and the warning and safety effects are achieved.
惟以上所述僅為本發明之較佳實施例，非意欲侷限本發明的專利保護範圍，故舉凡運用本發明說明書及圖式內容所為的等效變化，均同理皆包含於本創作的權利保護範圍內，合予陳明。However, the above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the patent protection of the present invention. Therefore, the equivalent changes of the present invention and the contents of the drawings are all included in the right of the present invention. Within the scope of protection, it is given to Chen Ming.
101‧‧‧控制單元101‧‧‧Control unit
103‧‧‧加熱單元103‧‧‧heating unit
104‧‧‧電源供應單元104‧‧‧Power supply unit
105‧‧‧第一電源線105‧‧‧First power cord
107‧‧‧第二電源線107‧‧‧second power cord
109‧‧‧第一開關單元109‧‧‧First switch unit
111‧‧‧第二開關單元111‧‧‧Second switch unit
113‧‧‧第三開關單元113‧‧‧ Third switch unit
114‧‧‧驅動電路114‧‧‧Drive circuit
115‧‧‧漏電斷路偵測單元115‧‧‧Leakage circuit detection unit
116‧‧‧放大電路116‧‧‧Amplification circuit
117‧‧‧系統溫度偵測單元117‧‧‧System Temperature Detection Unit
119‧‧‧進水量檢知單元119‧‧‧ Influent detection unit
121‧‧‧進水溫度檢知單元121‧‧‧Inlet water temperature detection unit
123‧‧‧出水溫度檢知單元123‧‧‧Water temperature detection unit
125‧‧‧溫度設定單元125‧‧‧Temperature setting unit
127‧‧‧保護單元127‧‧‧protection unit
129‧‧‧電壓檢知單元129‧‧‧Voltage detection unit
131‧‧‧顯示單元131‧‧‧Display unit
Claims (13)
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| CN106856321B (en) * | 2015-12-08 | 2019-11-05 | 太琦科技股份有限公司 | Bathing safety control system and bathing safety control method |
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| TW200933103A (en) * | 2008-01-21 | 2009-08-01 | Iea Chung Ind Co Ltd | Heating control device for electrical water heater |
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