CN107367065A - Gas water heater and method for preventing freezing by using water pump - Google Patents
Gas water heater and method for preventing freezing by using water pump Download PDFInfo
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- CN107367065A CN107367065A CN201610312840.0A CN201610312840A CN107367065A CN 107367065 A CN107367065 A CN 107367065A CN 201610312840 A CN201610312840 A CN 201610312840A CN 107367065 A CN107367065 A CN 107367065A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
- F24H9/139—Continuous flow heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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Abstract
本发明公开了一种利用水泵防冻的燃气热水器和方法，其中，利用水泵防冻的燃气热水器包括：热交换器、燃烧器、进水管、出水管、出水阀门，燃烧器设置在热交换器的下方，在进水管上安装有水流量传感器，出水阀门设置在出水管上，在水流量传感器和热交换器之间还设有水泵，进水管和出水管通过循环水管接通，循环水管一端设在出水阀门和热交换器之间，另一端设在水流量传感器和水泵之间，并在循环水管上设置循环阀门，在进水管上设有第一温度传感器，当第一温度传感器检测到的水温低于第一温度值时，关闭出水阀门、开启水泵、打开循环阀门形成循环水路，并启动燃烧器对热交换器进行加热。这样，用水泵和燃烧器来循环和加热热水器内的水防止水路结冰。
The invention discloses a gas water heater using a water pump to prevent freezing and a method thereof, wherein the gas water heater using a water pump to prevent freezing comprises: a heat exchanger, a burner, a water inlet pipe, a water outlet pipe, and a water outlet valve, and the burner is arranged below the heat exchanger , a water flow sensor is installed on the water inlet pipe, the water outlet valve is set on the water outlet pipe, and a water pump is also provided between the water flow sensor and the heat exchanger. Between the water outlet valve and the heat exchanger, the other end is set between the water flow sensor and the water pump, and a circulation valve is set on the circulating water pipe, and a first temperature sensor is set on the water inlet pipe. When the water temperature detected by the first temperature sensor When the temperature is lower than the first temperature value, the water outlet valve is closed, the water pump is turned on, the circulation valve is opened to form a circulating water circuit, and the burner is started to heat the heat exchanger. In this way, the water pump and burner are used to circulate and heat the water in the water heater to prevent the waterway from freezing.
Description
技术领域technical field
本发明涉及热水器技术领域，具体涉及是一种利用水泵防冻的燃气热水器和方法。The invention relates to the technical field of water heaters, in particular to a gas water heater and method using a water pump to prevent freezing.
背景技术Background technique
燃气热水器的基本工作原理是冷水进入热水器，流经水气联动阀体在流动水的一定压力差值作用下，推动水气联动阀门，并同时推动直流电源微动开关将电源接通并启动脉冲点火器，与此同时打开燃气输气电磁阀门，通过脉冲点火器继续自动再次点火，直到点火成功进入正常工作状态为止。采用燃气作为主要能源材料，通过燃气燃烧产生的高温热量传递到流经热交换器的冷水中以达到制备热水目的。The basic working principle of the gas water heater is that cold water enters the water heater, flows through the water-gas linkage valve body, under the action of a certain pressure difference of the flowing water, pushes the water-gas linkage valve, and at the same time pushes the DC power micro switch to turn on the power and start the pulse At the same time, open the gas transmission electromagnetic valve, and continue to automatically re-ignite through the pulse igniter until the ignition is successful and enters the normal working state. Gas is used as the main energy source, and the high-temperature heat generated by the combustion of gas is transferred to the cold water flowing through the heat exchanger to achieve the purpose of preparing hot water.
一些低水压地区需要通过增加增压泵的方式来满足燃气热水器的工作以及用户的体验，但寒冷地区冬季水泵没有特别的保护，容易冻裂，为了在用户不使用热水情况下水管不会被冻坏，如图1所示，一般都是使用防冻加热电阻对热交换器的水管进行加热，但是这样只能进行局部加热，无法实现水流的流动，也就无法实现对整个水路的保护。Some areas with low water pressure need to add a booster pump to satisfy the work of the gas water heater and the experience of the user, but the water pump in the cold area has no special protection in winter, and it is easy to freeze and crack. If it is damaged by freezing, as shown in Figure 1, the water pipe of the heat exchanger is generally heated by an antifreeze heating resistor, but this can only be used for local heating, and the flow of water cannot be realized, and the protection of the entire waterway cannot be realized.
因此，需要一种新的技术方案能够利用水泵使热水器内的水进行循环，并通过燃烧器加热的方式来实现整个水路的防冻。Therefore, need a kind of new technical scheme to be able to utilize water pump to make the water in the water heater circulate, and realize the antifreeze of whole waterway through the mode of burner heating.
有鉴于此特提出本发明。In view of this, the present invention is proposed.
发明内容Contents of the invention
本发明要解决的技术问题在于克服现有技术的不足，提供一种能够利用水泵使热水器内的水进行循环，并通过燃烧器加热的方式来实现整个水路的防冻的利用水泵防冻的热气热水器和方法。The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide a hot air water heater and a water pump antifreeze that can use the water pump to circulate the water in the water heater and realize the antifreeze of the entire waterway by means of burner heating. method.
为解决上述技术问题，本发明采用技术方案的基本构思是：In order to solve the problems of the technologies described above, the present invention adopts the basic idea of technical solution to be:
本发明的第一方面提出了一种利用水泵防冻的燃气热水器，包括：热交换器、燃烧器、进水管、出水管、出水阀门，燃烧器设置在热交换器的下方，在进水管上安装有水流量传感器，出水阀门设置在出水管上，在水流量传感器和热交换器之间还设有水泵，所述进水管和所述出水管通过循环水管接通，所述循环水管一端设在所述出水阀门和所述热交换器之间，另一端设在所述水流量传感器和水泵之间，并在所述循环水管上设置循环阀门，在进水管上设有第一温度传感器，当第一温度传感器检测到的水温低于第一温度值时，关闭出水阀门、开启水泵、打开循环阀门形成循环水路，并启动燃烧器对热交换器进行加热。The first aspect of the present invention proposes a gas water heater using a water pump to prevent freezing, including: a heat exchanger, a burner, a water inlet pipe, a water outlet pipe, and a water outlet valve. The burner is arranged below the heat exchanger and installed on the water inlet pipe. There is a water flow sensor, the water outlet valve is set on the water outlet pipe, and a water pump is also provided between the water flow sensor and the heat exchanger. The water inlet pipe and the water outlet pipe are connected through a circulating water pipe, and one end of the circulating water pipe is set at Between the water outlet valve and the heat exchanger, the other end is set between the water flow sensor and the water pump, and a circulating valve is set on the circulating water pipe, and a first temperature sensor is set on the water inlet pipe. When the water temperature detected by the first temperature sensor is lower than the first temperature value, the water outlet valve is closed, the water pump is turned on, the circulation valve is opened to form a circulating water circuit, and the burner is started to heat the heat exchanger.
优选地，当所述循环阀门开启预定时间后，第一温度传感器检测到水温低于第二温度值，再启动燃烧器对热交换器进行加热，优选地，所述第二温度值小于所述第一温度值。Preferably, when the circulation valve is opened for a predetermined time, the first temperature sensor detects that the water temperature is lower than a second temperature value, and the burner is restarted to heat the heat exchanger. Preferably, the second temperature value is lower than the first temperature value.
优选地，当所述第一温度传感器检测的水温大于或等于第三温度值时，将所述循环阀门关闭，水泵关闭，燃烧器停止燃烧。Preferably, when the water temperature detected by the first temperature sensor is greater than or equal to the third temperature value, the circulation valve is closed, the water pump is closed, and the burner stops burning.
优选地，在所述循环水路上设置第二温度传感器，当第一温度传感器和第二温度传感器检测的水温均大于或等于第三温度值时，将所述循环阀门关闭，水泵关闭，燃烧器停止燃烧；Preferably, a second temperature sensor is set on the circulating waterway, and when the water temperature detected by the first temperature sensor and the second temperature sensor is greater than or equal to the third temperature value, the circulation valve is closed, the water pump is closed, and the burner stop burning;
优选地，所述第二温度传感器的数量为至少一个。Preferably, the number of the second temperature sensor is at least one.
优选地，所述第三温度值大于所述第一温度值，且所述第三温度值大于所述第二温度值。Preferably, the third temperature value is greater than the first temperature value, and the third temperature value is greater than the second temperature value.
优选地，在燃烧器上设有控制加热强度的比例阀，在启动燃烧器对热交换器进行加热时，将控制比例阀开度的功率设为3.5-4.5kw。Preferably, a proportional valve is provided on the burner to control the heating intensity, and when the burner is started to heat the heat exchanger, the power to control the opening of the proportional valve is set to 3.5-4.5kw.
优选地，所述循环阀门为单向阀。Preferably, the circulation valve is a one-way valve.
本发明的第二方面提出了一种利用水泵防冻的方法，设有上述第一方面所述的利用水泵防冻的燃气热水器，步骤包括：The second aspect of the present invention proposes a method for using a water pump to prevent freezing, which is provided with the gas water heater using a water pump for preventing freezing described in the first aspect above, and the steps include:
S1，第一温度传感器实时检测进水管的水温；S1, the first temperature sensor detects the water temperature of the water inlet pipe in real time;
S2，当第一温度传感器检测到的水温低于第一温度值时，关闭出水阀门、开启水泵、打开循环阀门形成循环水路；S2, when the water temperature detected by the first temperature sensor is lower than the first temperature value, close the water outlet valve, turn on the water pump, and open the circulation valve to form a circulating water circuit;
S3，开启燃烧器对热交换器进行加热。S3, turning on the burner to heat the heat exchanger.
优选地，在所述步骤S3之前，还包括：Preferably, before the step S3, it also includes:
Sa，当所述循环阀门开启预定时间后，确定第一温度传感器检测到水温低于第二温度值。Sa, after the circulation valve is opened for a predetermined time, it is determined that the water temperature detected by the first temperature sensor is lower than the second temperature value.
优选地，在所述步骤S3之后，还包括：Preferably, after the step S3, it also includes:
S4，当所述第一温度传感器和所述第二温度传感器检测的水温均大于或等于第三温度值时，将所述循环阀门关闭，水泵关闭，燃烧器停止燃烧。S4. When the water temperatures detected by the first temperature sensor and the second temperature sensor are both greater than or equal to a third temperature value, the circulation valve is closed, the water pump is closed, and the burner stops burning.
采用上述技术方案后，本发明与现有技术相比具有以下有益效果。After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.
在用户不使用燃气热水器时，为了保证整个水路不会结冰，在燃气热水器的进水管上设置水泵，并且还添加一个循环水管用来保证热交换器、进水管和出水管能够形成一个循环水路，这样当水温较低时，就可以启动水泵使循环水路循环起来，并开启燃烧器提高水温，来实现整个水路的防冻，并且，在循环水路上还设置循环阀门，这样，在用户正常使用燃气热水器时，关闭该循环阀门，进而保证整个水路的正常出水。When the user does not use the gas water heater, in order to ensure that the entire waterway will not freeze, a water pump is installed on the water inlet pipe of the gas water heater, and a circulating water pipe is added to ensure that the heat exchanger, the water inlet pipe and the water outlet pipe can form a circulating waterway , so that when the water temperature is low, the water pump can be started to circulate the circulating waterway, and the burner can be turned on to increase the water temperature to realize the antifreeze of the entire waterway, and a circulation valve is also set on the circulating waterway, so that when the user uses the gas normally When the water heater is used, close the circulation valve to ensure the normal water outlet of the entire waterway.
另外，本发明的方案还可以是，控制系统在循环阀门开启后开始计时，当时间达到预定时间后，获取第一温度传感器检测的水温，并将该水温与第二温度值进行比较，当该水温低于第二温度值时，再启动燃烧器对热交换器进行加热，这样依靠水泵的使热交换器内的热水在整个循环水路内流动，进而达到防止整个水路结冰的效果。In addition, the solution of the present invention can also be that the control system starts counting after the circulation valve is opened, and when the time reaches the predetermined time, obtains the water temperature detected by the first temperature sensor, and compares the water temperature with the second temperature value, when the time When the water temperature is lower than the second temperature value, start the burner again to heat the heat exchanger, so that the hot water in the heat exchanger can flow through the entire circulating waterway by means of the water pump, thereby preventing the entire waterway from freezing.
只有第一温度传感器来检测水温，比较局限，不能全方位体现整个循环水路的水温状况，为了能够更准确的检测整个循环水路的水温，需要在循环水路设置第二温度传感器，通过第一温度传感器和第二温度传感器共同检测的水温均大于或等于第三温度值时，将所述循环阀门关闭，水泵关闭，燃烧器停止燃烧，进而停止防冻控制。Only the first temperature sensor is used to detect the water temperature, which is relatively limited and cannot comprehensively reflect the water temperature of the entire circulating waterway. In order to detect the water temperature of the entire circulating waterway more accurately, it is necessary to install a second temperature sensor in the circulating waterway. When the water temperature jointly detected by the second temperature sensor is greater than or equal to the third temperature value, the circulation valve is closed, the water pump is closed, the burner stops burning, and then the antifreeze control is stopped.
附图说明Description of drawings
为了更清楚的说明本发明具体实施方式中的技术方案，下面将对具体实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the accompanying drawings that need to be used in the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative work.
图1示出了现有的燃烧器热水器的结构示意图；Fig. 1 shows the structural representation of existing burner water heater;
图2示出了本发明的一个实施例的利用水泵防冻的燃气热水器的结构示意图；Fig. 2 shows a schematic structural view of a gas water heater utilizing a water pump to prevent freezing according to an embodiment of the present invention;
图3示出了本发明的另一个实施例的利用水泵防冻的方法的流程图。Fig. 3 shows a flowchart of a method for antifreezing using a water pump according to another embodiment of the present invention.
其中，图2的附图标记如下：Wherein, the reference signs of Fig. 2 are as follows:
1利用水泵防冻的燃气热水器，11热交换器，12燃烧器，13进水管，14出水管，141出水阀门，15水流量传感器，16水泵，17循环水管，171循环阀门，18第一温度传感器，19第二温度传感器。1 gas water heater using water pump to prevent freezing, 11 heat exchanger, 12 burner, 13 water inlet pipe, 14 water outlet pipe, 141 water outlet valve, 15 water flow sensor, 16 water pump, 17 circulating water pipe, 171 circulating valve, 18 first temperature sensor , 19 second temperature sensor.
具体实施方式detailed description
下面结合附图对本发明的具体实施方式作进一步详细的描述。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
实施例一Embodiment one
图2示出了本发明的一个实施例的利用水泵防冻的燃气热水器的结构示意图。Fig. 2 shows a schematic structural view of a gas water heater using a water pump to prevent freezing according to an embodiment of the present invention.
如图2所示，本发明的第一方面提出了一种利用水泵16防冻的燃气热水器1，包括：热交换器11、燃烧器12、进水管13、出水管14、出水阀门141，燃烧器12设置在热交换器11的下方，在进水管13上安装有水流量传感器15，出水阀门141设置在出水管14上，在水流量传感器15和热交换器11之间还设有水泵16，所述进水管13和所述出水管14通过循环水管17接通，所述循环水管17一端设在所述出水阀门141和所述热交换器11之间，另一端设在所述水流量传感器15和水泵16之间，并在所述循环水管17上设置循环阀门171，在进水管13上设有第一温度传感器18，当第一温度传感器18检测到的水温低于第一温度值时，关闭出水阀门141、开启水泵16、打开循环阀门171形成循环水路，并启动燃烧器12对热交换器11进行加热。As shown in Figure 2, the first aspect of the present invention proposes a gas water heater 1 that utilizes a water pump 16 to prevent freezing, including: a heat exchanger 11, a burner 12, a water inlet pipe 13, a water outlet pipe 14, an outlet valve 141, and a burner 12 is arranged below the heat exchanger 11, a water flow sensor 15 is installed on the water inlet pipe 13, a water outlet valve 141 is arranged on the water outlet pipe 14, and a water pump 16 is also provided between the water flow sensor 15 and the heat exchanger 11, The water inlet pipe 13 and the water outlet pipe 14 are connected through a circulating water pipe 17, one end of the circulating water pipe 17 is set between the water outlet valve 141 and the heat exchanger 11, and the other end is set at the water flow sensor 15 and the water pump 16, and a circulating valve 171 is provided on the circulating water pipe 17, and a first temperature sensor 18 is provided on the water inlet pipe 13. When the water temperature detected by the first temperature sensor 18 is lower than the first temperature value , close the water outlet valve 141, turn on the water pump 16, open the circulation valve 171 to form a water circulation circuit, and start the burner 12 to heat the heat exchanger 11.
在上述技术方案中，在燃气热水器的进水管13上设置水泵16，为了使燃气热水器的进水管13和出水管14形成一个循环水路，设置一个循环水管17，循环水管17的一端与水流量传感器15和水泵16之间的进水管13接通，另一端与出水管14接通，并且为了保证用户在使用燃气热水器时，水路的畅通，在循环水管17上设置循环阀门171，这样，当用户在使用燃气热水器时，该循环阀门171就会关闭，当第一温度传感器18检测到的水温低于第一温度值时，控制系统就会关闭出水阀门141、开启水泵16、打开循环阀门171形成循环水路，并且同时将燃烧器12启动对热交换器11进行加热，这样加热后的水就会在水泵16的作用下在循环水路中进行循环，整个水路就不会结冰。In the above-mentioned technical scheme, a water pump 16 is set on the water inlet pipe 13 of the gas water heater. In order to form a circulating waterway between the water inlet pipe 13 and the water outlet pipe 14 of the gas water heater, a circulating water pipe 17 is arranged, and one end of the circulating water pipe 17 is connected to the water flow sensor. The water inlet pipe 13 between 15 and the water pump 16 is connected, and the other end is connected with the water outlet pipe 14, and in order to ensure that the waterway is unimpeded when the user uses the gas water heater, a circulation valve 171 is set on the water circulation pipe 17, so that when the user When using a gas water heater, the circulation valve 171 will be closed, and when the water temperature detected by the first temperature sensor 18 is lower than the first temperature value, the control system will close the water outlet valve 141, turn on the water pump 16, and open the circulation valve 171 to form Circulating water circuit, and at the same time, burner 12 is started to heat heat exchanger 11, and the water after heating will circulate in circulating water circuit under the effect of water pump 16 like this, and whole water circuit just can not freeze.
另外，在水流量传感器15的出水口处再设置一个进水阀门，这样当第一温度传感器18检测到的水温低于第一温度值时，控制系统就可以在关闭出水阀门141、开启水泵16、打开循环阀门171的同时关闭该进水阀门，防止用户家中停水时，出现回流的状况，并且，该进水阀门还可以是单向阀，这样该进水阀门就不需要控制系统的控制，使进水管13只进水不出水，更加有效的防止了水路回流的现象。In addition, a water inlet valve is set at the water outlet of the water flow sensor 15, so that when the water temperature detected by the first temperature sensor 18 is lower than the first temperature value, the control system can close the water outlet valve 141 and turn on the water pump 16. 1. Open the circulation valve 171 and close the water inlet valve at the same time to prevent backflow when the water is cut off in the user's home, and the water inlet valve can also be a one-way valve, so that the water inlet valve does not need to be controlled by the control system , so that the water inlet pipe 13 only enters water and does not emit water, which more effectively prevents the phenomenon of waterway backflow.
通过上述技术方案，在用户不使用燃气热水器时，为了保证整个水路不会结冰，在燃气热水器的进水管13上设置水泵16，并且还添加一个循环水管17用来保证热交换器11、进水管13和出水管14能够形成一个循环水路，这样当水温较低时，就可以启动水泵16使循环水路循环起来，并开启燃烧器12提高水温，来实现整个水路的防冻，并且，在循环水路上还设置循环阀门171，这样，在用户正常使用燃气热水器时，关闭该循环阀门171，进而保证整个水路的正常出水。Through the above technical solution, when the user does not use the gas water heater, in order to ensure that the entire waterway will not freeze, a water pump 16 is provided on the water inlet pipe 13 of the gas water heater, and a circulating water pipe 17 is added to ensure that the heat exchanger 11, The water pipe 13 and the water outlet pipe 14 can form a circulating waterway, so that when the water temperature is low, the water pump 16 can be started to circulate the circulating waterway, and the burner 12 can be turned on to increase the water temperature, so as to realize the antifreeze of the whole waterway. Circulation valve 171 is also set on the road, like this, when user uses gas water heater normally, closes this circulation valve 171, and then guarantees the normal water outlet of whole waterway.
优选地，当所述循环阀门171开启预定时间后，第一温度传感器18检测到水温低于第二温度值，再启动燃烧器12对热交换器11进行加热，优选地，所述第二温度值小于所述第一温度值。Preferably, after the cycle valve 171 is opened for a predetermined time, the first temperature sensor 18 detects that the water temperature is lower than the second temperature value, and then the burner 12 is started to heat the heat exchanger 11. Preferably, the second temperature value is less than the first temperature value.
在上述技术方案中，控制系统在循环阀门171开启后开始计时，当时间达到预定时间后，获取第一温度传感器18检测的水温，并将该水温与第二温度值进行比较，当该水温低于第二温度值时，再启动燃烧器12对热交换器11进行加热，这样依靠水泵16的使热交换器11内的热水在整个循环水路内流动，进而达到防止整个水路结冰的效果。In the above technical solution, the control system starts counting after the circulation valve 171 is opened, and when the time reaches the predetermined time, obtains the water temperature detected by the first temperature sensor 18, and compares the water temperature with the second temperature value, and when the water temperature is low At the second temperature value, restart the burner 12 to heat the heat exchanger 11, so that the hot water in the heat exchanger 11 can flow through the entire circulating waterway by means of the water pump 16, thereby preventing the entire waterway from freezing .
例如，冬天，当用户不使用燃气热水器时，由于周围环境温度较低，导致整个水路的水温也比较低，一旦设置在热交换器11进水口处的第一温度传感器18检测到水温低于2℃(即第一温度值)时，就会开启水泵16，使整个循环水路的水循环流动起来，间隔5分钟(即预定时间)以后，如果第一温度传感器18检测到水温低于1℃，证明外界环境温度较低导致整个水路的水温一直在下降，此时只是单纯的依靠水的流动无法达到防冻的效果，就需要启动燃烧器12对热交换器11进行加热，再通过水泵16将热水流通到整个循环水路中达到防冻的效果，防止水管冻裂。For example, in winter, when the user does not use the gas water heater, the water temperature of the entire waterway is relatively low due to the low ambient temperature. Once the first temperature sensor 18 arranged at the water inlet of the heat exchanger 11 detects that the water temperature is lower than 2 °C (i.e. the first temperature value), the water pump 16 will be turned on to circulate the water in the entire circulating waterway, and after an interval of 5 minutes (i.e. the predetermined time), if the first temperature sensor 18 detects that the water temperature is lower than 1 °C, it proves that The temperature of the water in the entire waterway has been dropping due to the low external environment temperature. At this time, the effect of antifreezing cannot be achieved simply by relying on the flow of water. It is necessary to start the burner 12 to heat the heat exchanger 11, and then use the water pump 16 to transfer the hot water. Circulate into the entire circulating waterway to achieve the antifreeze effect and prevent the water pipe from freezing and cracking.
优选地，当所述第一温度传感器18检测的水温大于或等于第三温度值时，将所述循环阀门171关闭，水泵16关闭，燃烧器12停止燃烧。Preferably, when the water temperature detected by the first temperature sensor 18 is greater than or equal to the third temperature value, the circulation valve 171 is closed, the water pump 16 is closed, and the burner 12 stops burning.
在上述技术方案中，本发明的目的是防止水管冻裂，影响用户的使用，为了防止燃烧器12对热交换器11一直加热，造成浪费资源，需要将第一温度传感器18检测的水温与第三温度值相比较，当该水温大于或等于第三温度值时，停止整个防冻控制系统，当该水温小于第三温度值时，需要燃烧器12继续对热交换器11进行加热。In the above technical solution, the purpose of the present invention is to prevent the water pipe from freezing and cracking, which will affect the user's use. In order to prevent the burner 12 from heating the heat exchanger 11 all the time, causing a waste of resources, it is necessary to compare the water temperature detected by the first temperature sensor 18 with the first temperature sensor 18. Comparing the three temperature values, when the water temperature is greater than or equal to the third temperature value, the entire antifreeze control system is stopped, and when the water temperature is lower than the third temperature value, the burner 12 is required to continue heating the heat exchanger 11 .
优选地，在所述循环水路上设置第二温度传感器19，当第一温度传感器18和第二温度传感器19检测的水温均大于或等于第三温度值时，将所述循环阀门171关闭，水泵16关闭，燃烧器12停止燃烧。Preferably, a second temperature sensor 19 is set on the circulating waterway, and when the water temperature detected by the first temperature sensor 18 and the second temperature sensor 19 is greater than or equal to the third temperature value, the circulation valve 171 is closed, and the water pump 16 is closed, and the burner 12 stops burning.
优选地，所述第二温度传感器19的数量为至少一个。Preferably, the number of the second temperature sensor 19 is at least one.
在上述技术方案中，只有第一温度传感器18来检测水温，比较局限，不能全方位体现整个循环水路的水温状况，为了能够更准确的检测整个循环水路的水温，需要在循环水路设置第二温度传感器19，通过第一温度传感器18和第二温度传感器19共同检测的水温均大于或等于第三温度值时，将所述循环阀门171关闭，水泵16关闭，燃烧器12停止燃烧，进而停止防冻控制。In the above technical solution, only the first temperature sensor 18 is used to detect the water temperature, which is relatively limited and cannot comprehensively reflect the water temperature of the entire circulating waterway. In order to detect the water temperature of the entire circulating waterway more accurately, it is necessary to set the second temperature in the circulating waterway Sensor 19, when the water temperature jointly detected by the first temperature sensor 18 and the second temperature sensor 19 is greater than or equal to the third temperature value, the circulation valve 171 is closed, the water pump 16 is closed, the burner 12 stops burning, and then stops antifreezing control.
优选地，所述第三温度值大于所述第一温度值，且所述第三温度值大于所述第二温度值。Preferably, the third temperature value is greater than the first temperature value, and the third temperature value is greater than the second temperature value.
在上述技术方案中，该第三温度值可以是10℃，或者其他适合用户实际情况的温度，用户也可以根据自己的需要进行设定。In the above technical solution, the third temperature value may be 10° C., or other temperature suitable for the actual situation of the user, and the user may also set it according to his own needs.
优选地，在燃烧器12上设有控制加热强度的比例阀，在启动燃烧器12对热交换器11进行加热时，将控制比例阀开度的功率设为3.5-4.5kw。Preferably, a proportional valve for controlling the heating intensity is provided on the burner 12, and when the burner 12 is started to heat the heat exchanger 11, the power for controlling the opening of the proportional valve is set to 3.5-4.5kw.
在上述技术方案中，燃烧器12启动是为了防止整个水路结冰，因此，燃烧器12的加热强度不需要太强，此时就将在燃烧器12上的比例阀的开度调小，比例阀的开度是通过功率调节的，为了将比例阀的开度调小，就需要将控制比例阀开度的功率设为3.5-4.5kw。In the above-mentioned technical solution, the burner 12 is started to prevent the entire waterway from freezing, therefore, the heating intensity of the burner 12 does not need to be too strong, and at this time, the opening of the proportional valve on the burner 12 is adjusted to a smaller value, and the proportional The opening of the valve is regulated by power. In order to reduce the opening of the proportional valve, it is necessary to set the power to control the opening of the proportional valve to 3.5-4.5kw.
优选地，所述循环阀门171为单向阀。Preferably, the circulation valve 171 is a one-way valve.
在上述技术方案中，为了保证整个循环水路是顺着一个方向流动，需要将循环阀门171设置为单向阀，这样能够更加方便用户的使用，能够进一步提升用户的体验。In the above technical solution, in order to ensure that the entire circulating waterway flows in one direction, the circulating valve 171 needs to be set as a one-way valve, which is more convenient for users and can further improve user experience.
实施例二Embodiment two
如图3所示，利用水泵防冻的方法，步骤包括：As shown in Figure 3, the method of using a water pump to prevent freezing includes:
S1，第一温度传感器实时检测进水管的水温；S1, the first temperature sensor detects the water temperature of the water inlet pipe in real time;
S2，当第一温度传感器检测到的水温低于第一温度值时，关闭出水阀门、开启水泵、打开循环阀门形成循环水路；S2, when the water temperature detected by the first temperature sensor is lower than the first temperature value, close the water outlet valve, turn on the water pump, and open the circulation valve to form a circulating water circuit;
S3，开启燃烧器对热交换器进行加热。S3, turning on the burner to heat the heat exchanger.
在上述技术方案中，第一温度传感器能够随时检测热交换器的进水管的水温，并将检测的水温与第一温度值进行比较，如果大于等于第一温度值则继续检测水温，如果低于第一温度值则关闭出水阀门、开启水泵、打开循环阀门开始防冻控制，为了防止环境温度过低在利用水泵形成循环水路的同时启动燃烧器，这样在水泵和燃烧器共同作用下循环水路的水温会逐渐升高，并循环流动，这样就能够有效防止了水管冻裂的现象。In the above technical solution, the first temperature sensor can detect the water temperature of the water inlet pipe of the heat exchanger at any time, and compare the detected water temperature with the first temperature value. If it is greater than or equal to the first temperature value, continue to detect the water temperature. If it is lower than The first temperature value is to close the water outlet valve, turn on the water pump, and open the circulation valve to start the antifreeze control. It will gradually rise and circulate, which can effectively prevent the water pipe from freezing and cracking.
优选地，在所述步骤S3之前，还包括：Preferably, before the step S3, it also includes:
Sa，当所述循环阀门开启预定时间后，确定第一温度传感器检测到水温低于第二温度值。Sa, after the circulation valve is opened for a predetermined time, it is determined that the water temperature detected by the first temperature sensor is lower than the second temperature value.
优选地，在所述步骤S3之后，还包括：Preferably, after the step S3, it also includes:
S4，当所述第一温度传感器和所述第二温度传感器检测的水温均大于或等于第三温度值时，将所述循环阀门关闭，水泵关闭，燃烧器停止燃烧。S4. When the water temperatures detected by the first temperature sensor and the second temperature sensor are both greater than or equal to a third temperature value, the circulation valve is closed, the water pump is closed, and the burner stops burning.
实施例三Embodiment Three
用户打开出水阀门，水流传感器感应水流，燃气热水器正常启动。The user opens the water outlet valve, the water flow sensor senses the water flow, and the gas water heater starts normally.
当在低温下，第一温度传感器感应到温度低于第一温度值时，比如2℃，水泵启动，循环阀门打开，热交换器内的水就会形成一个小型的循环，如果循环后第一温度传感器感应到温度仍然低于2℃，燃烧器点火燃烧，用小火加热热交换器，并通过水泵循环，将整个水路系统加热防冻，当感应到第一温度传感器和第二温度传感器的温度都大于10℃，防冻控制停止。At low temperature, when the first temperature sensor senses that the temperature is lower than the first temperature value, such as 2°C, the water pump starts, the circulation valve opens, and the water in the heat exchanger will form a small cycle. The temperature sensor senses that the temperature is still lower than 2°C, the burner ignites and burns, heats the heat exchanger with a small fire, and circulates through the water pump to heat the entire water system to prevent freezing. When the temperature of the first temperature sensor and the second temperature sensor is sensed Both are greater than 10°C, and the antifreeze control stops.
上述实施例中的实施方案可以进一步组合或者替换，且实施例仅仅是对本发明的优选实施例进行描述，并非对本发明的构思和范围进行限定，在不脱离本发明设计思想的前提下，本领域中专业技术人员对本发明的技术方案做出的各种变化和改进，均属于本发明的保护范围。The implementations in the above examples can be further combined or replaced, and the examples are only descriptions of preferred embodiments of the present invention, and are not intended to limit the concept and scope of the present invention. Various changes and improvements to the technical solutions of the present invention made by those skilled in the art belong to the protection scope of the present invention.
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Application publication date: 20171121 |