TWI398608B - Safety inspection method of water heater - Google Patents
Safety inspection method of water heater Download PDFInfo
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- TWI398608B TWI398608B TW99124356A TW99124356A TWI398608B TW I398608 B TWI398608 B TW I398608B TW 99124356 A TW99124356 A TW 99124356A TW 99124356 A TW99124356 A TW 99124356A TW I398608 B TWI398608 B TW I398608B
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Description
本發明係與熱水器有關,更詳而言之是指一種熱水器之安全檢知方法。The invention relates to a water heater, and more particularly to a method for detecting safety of a water heater.
熱水器於使用一段時間後,常因使用次數之增加或設置環境之影響,而使得內部機件容易有老化或損壞的情形產生,而老化或損壞的機件會造成熱水器之加熱效率降低,此時熱水器為達成出水溫度到達預設的使用溫度時,勢必再額外供輸更多瓦斯以進行加熱,惟此情形將耗用更多的瓦斯,亦即將造成加熱成本的增加。After the water heater is used for a period of time, it is often caused by the increase of the number of uses or the setting environment, so that the internal parts are prone to aging or damage, and the aging or damaged parts will cause the heating efficiency of the water heater to decrease. When the water heater reaches the preset use temperature, it will inevitably supply more gas for heating, but this situation will consume more gas, which will also increase the heating cost.
除此之外,機件的老化或損壞情形亦可能導致瓦斯燃燒不完全而有一氧化碳產生之可能。再者,機件有損壞時則有造成瓦斯外洩之虞,進而引發瓦斯氣爆之危險。由上述可知,熱水器在內部機件有老化或損壞發生時,不僅造成燃燒效率不彰,更有危害人體安全之虞。In addition, aging or damage to the machine may also result in incomplete combustion of the gas and the possibility of carbon monoxide production. Moreover, when the machine is damaged, there is a risk of gas leakage, which may cause a gas explosion. It can be seen from the above that when the water heater has aging or damage to the internal parts, not only the combustion efficiency is not good, but also the safety of the human body.
有鑑於此,本發明之主要目的在於提供一種熱水器之安全檢知方法,係利用偵測熱水器之加熱效率正常與否,做為檢測內部機件是否老化或破損之依據,以達安全檢知之目的。In view of this, the main object of the present invention is to provide a method for detecting safety of a water heater by detecting whether the heating efficiency of the water heater is normal or not, and as a basis for detecting whether the internal mechanical parts are aging or damaged, for the purpose of safety detection. .
緣以達成上述目的,本發明所提供之熱水器安全檢知方法,該熱水器具有一輸水管、一加熱單元用以加熱該輸水管內的水、一瓦斯供應單元用以供輸瓦斯予該加熱單元,以及一檢知單元用以監視水溫變化;該安全檢知方法包括下列步驟:In order to achieve the above object, the water heater safety detecting method provided by the present invention has a water pipe, a heating unit for heating water in the water pipe, and a gas supply unit for supplying gas to the heating unit. And a detection unit for monitoring water temperature changes; the security detection method comprises the following steps:
先設定好一使用溫度,並偵測該輸水管之一進水口的入水溫度及水流量,並以上述使用溫度、入水溫度與水流量為參數,計算於一預定時間內,該加熱單元對輸水管內的水加熱至該使用溫度所需的瓦斯量,藉以求得一理想瓦斯總量。而後,該瓦斯供應單元逐量供應瓦斯予該加熱單元,當瓦斯供應到達該理想瓦斯總量時,偵測該輸水管之一出水口的出水溫度,當出水溫度未達使用溫度時,則以偵測當時的出水溫度及入水溫度的溫差與使用溫度及入水溫度的溫差計算出一溫差比值,若該溫差比值小於一預定值時,則該檢知單元發送出一處理訊號,該處理訊號可用以啟動警示作用或控制中斷瓦斯的供輸,抑或者是兩者同時被啟動。First set a use temperature, and detect the inlet water temperature and water flow rate of one of the water inlets of the water pipe, and calculate the heating temperature and the water flow rate by using the above-mentioned use temperature, water inlet temperature and water flow as parameters. The water in the water pipe is heated to the amount of gas required for the use temperature to obtain a desired total amount of gas. Then, the gas supply unit supplies gas to the heating unit one by one, and detects the water outlet temperature of one of the water outlets when the gas supply reaches the total amount of the desired gas, and when the water temperature does not reach the use temperature, A temperature difference ratio between the temperature of the water outlet temperature and the water inlet temperature and the temperature of the water inlet temperature is detected, and if the temperature difference ratio is less than a predetermined value, the detecting unit sends a processing signal, and the processing signal is available. In order to activate the warning or to control the interruption of the supply of gas, or both are activated at the same time.
為達成上述目的,本發明另提供一種安全檢知方法,即,當輸水管之出水口的出水溫度未到達使用溫度時,該瓦斯供應單元繼續供輸一瓦斯補償量予該加熱單元,直至出水溫度到達使用溫度,並以入水溫度加熱至使用溫度的瓦斯實際供應量之總熱值與該理想瓦斯總量之總熱值計算出一效率比值,若該效率比值小於一參考值時,則該檢知單元發送出該處理訊號。In order to achieve the above object, the present invention further provides a safety detecting method, that is, when the water outlet temperature of the water outlet of the water pipe does not reach the use temperature, the gas supply unit continues to supply a gas compensation amount to the heating unit until the water is discharged. The temperature reaches the use temperature, and the total heat value of the actual gas supply amount heated to the use temperature and the total heat value of the ideal gas total is calculated as an efficiency ratio. If the efficiency ratio is less than a reference value, then the ratio is The detecting unit sends out the processing signal.
為能更清楚地說明本發明,茲舉較佳實施例並配合圖示詳細說明如後。In order that the present invention may be more clearly described, the preferred embodiments are illustrated in the accompanying drawings.
首先,簡要介紹本發明較佳實施例所使用之熱水器1結構,再說明達成安全檢之目的之方法於後。First, the structure of the water heater 1 used in the preferred embodiment of the present invention will be briefly described, and the method for achieving the purpose of the safety inspection will be described later.
第一圖所示之熱水器1包含有一溫度設定單元10、一輸水管20、一加熱單元30、一瓦斯供應單元40、二個溫度偵測器50、51、一水流量偵測器60、一控制器70以及一警示裝置80。其中,輸水管20具有一進水口20a以及一出水口20b;瓦斯供應單元40包含一瓦斯管42及一設置在該瓦斯管42上之瓦斯比例閥44,所述瓦斯比例閥44具有調節供給該加熱單元30瓦斯量之功效,其可為申請人申請之美國專利公開第20090206291A1號所示之「gas flow rate control valve」,係利用電流提供使閥門作比例式開啟,亦即當電流提供越大,閥門開度比例式地增大,所提供之瓦斯流量亦隨之正比地加大,當然在設計上,亦可利用其他機構之設計,例如旋轉式的錯位開門方式,只要能控制及計算出瓦斯量之提供;另,控制器70具有一計算單元71與一檢知單元72。The water heater 1 shown in the first figure comprises a temperature setting unit 10, a water pipe 20, a heating unit 30, a gas supply unit 40, two temperature detectors 50, 51, a water flow detector 60, and a water heater. The controller 70 and a warning device 80. The water supply pipe 20 has a water inlet 20a and a water outlet 20b. The gas supply unit 40 includes a gas pipe 42 and a gas proportional valve 44 disposed on the gas pipe 42. The gas proportional valve 44 has an adjustment supply. The "gas flow rate control valve" shown in the U.S. Patent Publication No. 20090206291A1 filed by the applicant, which utilizes the current supply to cause the valve to be proportionally opened, that is, when the current is supplied The valve opening degree is proportionally increased, and the gas flow rate provided is also proportionally increased. Of course, in design, other mechanism designs can also be utilized, such as a rotary dislocation opening method, as long as it can be controlled and calculated. The controller 70 has a calculation unit 71 and a detection unit 72.
第二圖為本發明較佳實施例之安全檢知流程圖,其步驟包括:The second figure is a flowchart of the security detection of the preferred embodiment of the present invention, and the steps thereof include:
先對該溫度設定單元10設定一期望定值之使用溫度,並以該使用溫度為基準進行後續的水溫調控。First, the temperature setting unit 10 is set to a desired fixed value use temperature, and the subsequent water temperature control is performed based on the use temperature.
該溫度偵測器50與該水流量偵測器60皆裝設於鄰近該進水口20a處之入水管101上,當使用者啟動該熱水器1時,該溫度偵測器50及該水流量偵測器60立即偵測進水口20a處之入水溫度以及水流量,該控制器70之計算單元71再以上述之使用溫度、入水溫度與水流量做為參數,計算於一預定時間內,該加熱單元30對輸水管20內的水加熱至該使用溫度所需的總熱值,並據以換算出一理想瓦斯總量。前述總熱值之計算公式如下:The temperature detector 50 and the water flow detector 60 are installed on the water inlet pipe 101 adjacent to the water inlet 20a. When the user activates the water heater 1, the temperature detector 50 and the water flow detector The detector 60 immediately detects the inlet water temperature and the water flow rate at the water inlet 20a, and the calculation unit 71 of the controller 70 takes the above-mentioned use temperature, the inlet water temperature and the water flow rate as parameters, and calculates the heating for a predetermined time. The unit 30 heats the water in the water pipe 20 to the total heating value required for the use temperature, and converts a desired total amount of gas. The above formula for calculating the total calorific value is as follows:
水的比熱*(使用溫度-入水溫度)*水流量*預定時間=總熱值Specific heat of water* (use temperature - inlet water temperature) * water flow rate * predetermined time = total calorific value
計算完成後,該控制器70下達一控制訊號予該瓦斯比例閥44,用以將該理想瓦斯總量在一預定時間內以逐量提供方式供給該加熱單元30,該加熱單元30接收到瓦斯後,對該輸水管20內的水進行加熱。After the calculation is completed, the controller 70 issues a control signal to the gas proportional valve 44 for supplying the total amount of ideal gas to the heating unit 30 in a predetermined amount of time for a predetermined time. The heating unit 30 receives the gas. Thereafter, the water in the water pipe 20 is heated.
該溫度偵測器51裝設於鄰近該出水口20b處之出水管102上,當瓦斯供應到達該理想瓦斯總量時,該溫度偵測器51馬上偵測出水溫度,當出水溫度到達使用溫度時,該瓦斯供應單元40將控制瓦斯以定量輸出,藉以維持出水溫度;若出水溫度未達使用溫度時,該計算單元71則以該溫度偵測器51偵測當時的出水溫度及入水溫度的溫差除以使用溫度及入水溫度的溫差,據以計算出一溫差比值。The temperature detector 51 is installed on the water outlet pipe 102 adjacent to the water outlet 20b. When the gas supply reaches the total amount of the desired gas, the temperature detector 51 immediately detects the water temperature, and when the water temperature reaches the use temperature. The gas supply unit 40 controls the gas to be quantitatively outputted to maintain the outlet water temperature; if the outlet water temperature does not reach the use temperature, the calculation unit 71 detects the current outlet water temperature and the inlet water temperature by the temperature detector 51. The temperature difference is divided by the temperature difference between the use temperature and the inlet water temperature, and a temperature difference ratio is calculated.
計算完成後,將該溫差比值與該檢知單元72內建之一第一預定值進行比較,若該溫差比值小於該第一預定值時,則該檢知單元72發送出一第一處理訊號予該警示裝置80,藉以產生一警示訊息通知使用者熱水器1異常,前述第一預定值在本實施例中是以0.9為例,其代表熱水器1內部機件已有輕微老化或損壞情形發生。緊接著,所計算之溫差比值繼續與一第二預定值進行比較,若該溫差比值小於該第二預定值時,則該檢知單元72送出第二處理訊號並控制該瓦斯比例閥44阻斷瓦斯之供輸,前述第二預定值在本實施例中是以0.7為例,其代表熱水器1內部機件有嚴重老化或損壞發生,並有即時危險發生之虞,因此,適時地阻斷瓦斯供輸,可收安全之效。又,若溫差比值是介於第一預定值與第二預定值之間時,則,該加熱單元30持續加熱,至出水溫度到達使用溫度後,該瓦斯供應單元40將控制瓦斯以定量輸出而維持出水溫度。After the calculation is completed, the temperature difference ratio is compared with a first predetermined value built in the detecting unit 72. If the temperature difference ratio is less than the first predetermined value, the detecting unit 72 sends a first processing signal. The warning device 80 is configured to generate a warning message to notify the user that the water heater 1 is abnormal. The first predetermined value is 0.9 in the embodiment, which represents that the internal components of the water heater 1 have been slightly aged or damaged. Then, the calculated temperature difference ratio value is further compared with a second predetermined value. If the temperature difference ratio is less than the second predetermined value, the detecting unit 72 sends the second processing signal and controls the gas proportional valve 44 to block. In the present embodiment, the second predetermined value is 0.7, which represents that the internal parts of the water heater 1 are seriously deteriorated or damaged, and there is an immediate danger, so that the gas is blocked in time. For transportation, it can be safe. Moreover, if the temperature difference ratio is between the first predetermined value and the second predetermined value, the heating unit 30 continues to heat, and after the outlet water temperature reaches the use temperature, the gas supply unit 40 controls the gas to be quantitatively outputted. Maintain the water temperature.
必須說明的是,上述第一預定值與第二預定值之數值可依環境或需求之不同而適當改變,並於熱水器1出廠前即已預先設定完成。It should be noted that the values of the first predetermined value and the second predetermined value may be appropriately changed according to the environment or the demand, and are preset before the water heater 1 is shipped from the factory.
除上述方法外,本發明另提供一種安全檢知方法,請參第三圖所示,其揭示之安全檢知方法與上述實施例不同處在於:In addition to the above methods, the present invention further provides a security detection method, which is shown in the third figure, and the security detection method disclosed therein is different from the above embodiment in that:
本實施例方法在瓦斯供應已到達該理想瓦斯總量後,出水溫度卻未達使用溫度時,該瓦斯供應單元40將會持續供輸一瓦斯補償量予該加熱單元30,直至出水溫度到達使用溫度,此後,計算單元71將再以理想瓦斯總量之總熱值除以瓦斯實際供應量之總熱值,並計算出一效率比值,前述瓦斯實際供應量係指自入水溫度加熱至使用溫度實際耗用的瓦斯量。In the method of the embodiment, after the gas supply has reached the total amount of the desired gas, and the outlet water temperature does not reach the use temperature, the gas supply unit 40 continues to supply a gas compensation amount to the heating unit 30 until the outlet temperature reaches the use. Temperature, after that, the calculation unit 71 divides the total heating value of the ideal gas total by the total heating value of the actual gas supply amount, and calculates an efficiency ratio, which is the heating from the water inlet temperature to the use temperature. The amount of gas actually consumed.
上述效率比值將再與檢知單元72內建之一第一參考值及一第二參考值進行比較,若小於第一參考值時,則該檢知單元72發送出處理訊號予該警示裝置80產生警示訊息;若小於該第二參考值時,則,該檢知單元72控制該瓦斯比例閥44阻斷瓦斯之供輸。又,當效率比值介於第一參考值與第二參考值之間時,該瓦斯供應單元40則控制瓦斯以定量輸出而維持出水溫度。必須要說明的是,前述第一參考值是以0.9為例,其代表熱水器1內之熱交換機構已有輕微老化或損壞情形發生。第二參考值是以0.7為例,其代表熱水器1內之熱交換機構有嚴重老化或損壞發生。The efficiency ratio is further compared with a first reference value and a second reference value built in the detecting unit 72. If the value is smaller than the first reference value, the detecting unit 72 sends a processing signal to the warning device 80. A warning message is generated; if less than the second reference value, the detecting unit 72 controls the gas proportional valve 44 to block the supply of gas. Further, when the efficiency ratio is between the first reference value and the second reference value, the gas supply unit 40 controls the gas to maintain the outlet water temperature by the quantitative output. It must be noted that the aforementioned first reference value is exemplified by 0.9, which represents that a slight aging or damage has occurred in the heat exchange mechanism in the water heater 1. The second reference value is exemplified by 0.7, which represents that the heat exchange mechanism in the water heater 1 has severe aging or damage.
另外,為使安全檢知更加準確,請參閱第四圖,為本發明第三較佳實施例之安全檢知方法流程圖,本實施例係結合上述第一實施例與第二實施例之檢知方法,並據以作為安全檢知之依據。亦即,當瓦斯供應到達該理想瓦斯總量,但出水溫度未達使用溫度時,先進行計算並判別溫差比值是否小於該些預定值,若未達停止供給瓦斯予該加熱單元30之條件,持續供輸瓦斯補償量予該加熱單元30進行加熱升溫,直至出水溫度到達使用溫度,並據以進行計算與判別該效率比值是否小於該些參考值。藉此,當熱水器1之效率比值與溫差比值其中之一者符合停止供給瓦斯予該加熱單元30之條件時,該檢知單元72便送出該處理訊號控制瓦斯比例閥44阻斷瓦斯供應路徑,藉以令使用者於使用熱水器1時能更加安全無虞。In addition, in order to make the security detection more accurate, please refer to the fourth figure, which is a flowchart of the security detection method according to the third preferred embodiment of the present invention. The embodiment is combined with the foregoing first embodiment and the second embodiment. Know the method and use it as the basis for safety detection. That is, when the gas supply reaches the total amount of the desired gas, but the outlet water temperature does not reach the use temperature, first calculate and determine whether the temperature difference ratio is less than the predetermined value, and if the condition for stopping the supply of gas to the heating unit 30 is not reached, The gas supply compensation amount is continuously supplied to the heating unit 30 for heating and heating until the outlet water temperature reaches the use temperature, and accordingly, it is calculated and determined whether the efficiency ratio is smaller than the reference values. Thereby, when one of the efficiency ratio and the temperature difference ratio of the water heater 1 meets the condition of stopping the supply of gas to the heating unit 30, the detecting unit 72 sends the processing signal to control the gas proportional valve 44 to block the gas supply path. In order to make the user more secure when using the water heater 1.
以上所述僅為本發明數個較佳可行實施例而已,舉凡應用本發明說明書及申請專利範圍所為之等效結構及製作方法變化,理應包含在本發明之專利範圍內。The above description is only a few preferred embodiments of the present invention, and the equivalent structures and manufacturing methods of the present invention and the scope of the patent application are intended to be included in the scope of the present invention.
1...熱水器1. . . Water heater
10...溫度設定單元10. . . Temperature setting unit
20...輸水管20. . . Water pipe
20a...進水口20a. . . water intake
20b...出水口20b. . . Outlet
30...加熱單元30. . . Heating unit
40...瓦斯供應單元40. . . Gas supply unit
42...瓦斯管42. . . Gas tube
44...瓦斯比例閥44. . . Gas proportional valve
50、51...溫度偵測器50, 51. . . Temperature detector
60...水流量偵測器60. . . Water flow detector
70...控制器70. . . Controller
71...計算單元71. . . Computing unit
72...檢知單元72. . . Detection unit
80...警示裝置80. . . Warning device
101...入水管101. . . Water inlet pipe
102...出水管102. . . Outlet pipe
第一圖為本發明之熱水器結構示意圖。The first figure is a schematic structural view of the water heater of the present invention.
第二圖為本發明第一較佳實施例之安全檢知方法流程圖。The second figure is a flow chart of the security detection method of the first preferred embodiment of the present invention.
第三圖為本發明第二較佳實施例之安全檢知方法流程圖。The third figure is a flowchart of a security detection method according to a second preferred embodiment of the present invention.
第四圖為本發明第三較佳實施例之安全檢知方法流程圖。The fourth figure is a flowchart of a security detecting method according to a third preferred embodiment of the present invention.
本代表圖為流程圖,故無元件符號。This representative diagram is a flow chart, so there is no component symbol.
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TWM352014U (en) * | 2008-09-19 | 2009-03-01 | jun-cheng Huang | Control device for prevention of miss operation for water heater |
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2010
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TWM240549U (en) * | 2003-04-25 | 2004-08-11 | Taiwan Sakura Corp | Constant temperature water heater |
TWM283979U (en) * | 2005-08-11 | 2005-12-21 | Wen-Chou Chen | Thermostat of fuel gas water-heater |
TWI263024B (en) * | 2005-11-22 | 2006-10-01 | Guard Sound Ind Co Ltd | Apparatus and method of rapid thermostatical control for water heater |
TWM318710U (en) * | 2007-01-15 | 2007-09-11 | Rung-Yu Wu | Improved digital temperature control and detection structure for water heater |
TWM352014U (en) * | 2008-09-19 | 2009-03-01 | jun-cheng Huang | Control device for prevention of miss operation for water heater |
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TW201205012A (en) | 2012-02-01 |
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