CN105571144B - temperature setting method for constant-temperature gas water heater - Google Patents
temperature setting method for constant-temperature gas water heater Download PDFInfo
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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
本发明公开了一种恒温燃气热水器温度给定方法，所述恒温燃气热水器包括有两个热水出水口，采用由水阀控制两路热水流量相对差值比例的方法控制恒温燃气热水器的温度给定值；当第一热水出水口热水流量相对增大、第二热水出水口热水流量相对减小时，温度给定值增大；当第一热水出水口热水流量相对减小、第二热水出水口热水流量相对增大时，温度给定值减小。所述方法无需有线或者无线遥控器，能够实现热水器热水温度给定值的远程控制，控制结果稳定可靠。
The invention discloses a method for setting the temperature of a constant-temperature gas water heater. The constant-temperature gas water heater includes two hot water outlets, and the temperature of the constant-temperature gas water heater is controlled by using a water valve to control the relative difference ratio of the two hot water flows. Set value; when the hot water flow rate of the first hot water outlet increases relatively and the hot water flow rate of the second hot water outlet decreases relatively, the temperature set value increases; when the hot water flow rate of the first hot water outlet decreases relatively Small, when the hot water flow of the second hot water outlet increases relatively, the temperature setting value decreases. The method does not need a wired or wireless remote controller, can realize the remote control of the given value of the hot water temperature of the water heater, and the control result is stable and reliable.
Description
技术领域technical field
本发明涉及一种恒温燃气热水器控制技术，尤其是一种恒温燃气热水器温度给定方法。The invention relates to a constant temperature gas water heater control technology, in particular to a constant temperature gas water heater temperature setting method.
背景技术Background technique
恒温燃气热水器能够保持出水温度恒定，但如果温度设定不合适，特别是在淋浴时，不带无线遥控或者远距离线控的燃气热水器温度无法调节，用混水阀添加冷水又容易导致燃气热水器熄火。采用无线遥控调节燃气热水器温度，受安装位置的限制，很多场合遥控器信号无法传送至燃气热水器。采用远距离线控方式时，专用的防水有线遥控器成本高，需要预先埋线，长期在浴室等潮湿环境下工作，电子式的有线遥控器故障率高。The constant temperature gas water heater can keep the temperature of the outlet water constant, but if the temperature setting is not appropriate, especially when showering, the temperature of the gas water heater without wireless remote control or long-distance wire control cannot be adjusted. Adding cold water with the mixing valve will easily cause the gas water heater turn off the flame. The wireless remote control is used to adjust the temperature of the gas water heater. Due to the limitation of the installation location, the remote control signal cannot be transmitted to the gas water heater in many occasions. When the long-distance wire control method is used, the special waterproof wired remote control is expensive, and it needs to be embedded in advance. It works in a humid environment such as a bathroom for a long time, and the electronic wired remote control has a high failure rate.
发明内容Contents of the invention
本发明的目的是为远距离控制恒温燃气热水器的热水温度提供一种解决方案，即能够远距离控制恒温燃气热水器的温度给定值的方法。The purpose of the present invention is to provide a solution for remote control of the hot water temperature of the constant temperature gas water heater, that is, a method capable of remotely controlling the temperature given value of the constant temperature gas water heater.
为了实现上述目的，本发明提供了一种恒温燃气热水器温度给定方法，包括：In order to achieve the above object, the present invention provides a method for setting the temperature of a constant temperature gas water heater, including:
所述恒温燃气热水器包括有控制器、第一流量传感器、第二流量传感器、第一热水出水口、第二热水出水口、热交换器。所述恒温燃气热水器由冷水管连接在冷水进水口和热交换器之间；第一热水管的一端连接至第一热水出水口，另外一端连通至主热水管出水端；第二热水管的一端连接至第二热水出水口，另外一端连通至主热水管出水端；主热水管的入水端连接至热交换器。The constant temperature gas water heater includes a controller, a first flow sensor, a second flow sensor, a first hot water outlet, a second hot water outlet, and a heat exchanger. The constant temperature gas water heater is connected between the cold water inlet and the heat exchanger by a cold water pipe; one end of the first hot water pipe is connected to the first hot water outlet, and the other end is connected to the water outlet of the main hot water pipe; One end of the water pipe is connected to the second hot water outlet, and the other end is connected to the water outlet end of the main hot water pipe; the water inlet end of the main hot water pipe is connected to the heat exchanger.
所述第一流量传感器安装在第一热水出水口之前，用于检测第一热水出水口的出口热水流量；所述第二流量传感器安装在第二热水出水口之前，用于检测第二热水出水口的出口热水流量。所述第一流量传感器、第二流量传感器为同一类型、同一量程范围的水流量传感器。The first flow sensor is installed before the first hot water outlet for detecting the outlet hot water flow of the first hot water outlet; the second flow sensor is installed before the second hot water outlet for detecting The outlet hot water flow rate of the second hot water outlet. The first flow sensor and the second flow sensor are water flow sensors of the same type and the same measuring range.
所述第一流量传感器与控制器之间有电连接，用于将第一热水出水口的出口热水流量信号传递至控制器；所述第二流量传感器与控制器之间有电连接，用于将第二热水出水口的出口热水流量信号传递至控制器。There is an electrical connection between the first flow sensor and the controller, which is used to transmit the outlet hot water flow signal of the first hot water outlet to the controller; there is an electrical connection between the second flow sensor and the controller, Used to transmit the outlet hot water flow signal of the second hot water outlet to the controller.
所述温度给定方法是，由第一热水出水口、第二热水出水口的出口热水流量的相对大小控制恒温燃气热水器的温度给定值；当第一热水出水口的出口热水流量相对增大、第二热水出水口的出口热水流量相对减小时，温度给定值增大；当第一热水出水口的出口热水流量相对减小、第二热水出水口的出口热水流量相对增大时，温度给定值减小。The temperature setting method is that the temperature setting value of the constant temperature gas water heater is controlled by the relative size of the outlet hot water flow of the first hot water outlet and the second hot water outlet; When the water flow rate increases relatively and the outlet hot water flow rate of the second hot water outlet decreases relatively, the temperature setting value increases; when the outlet hot water flow rate of the first hot water outlet decreases relatively, the second hot water outlet When the outlet hot water flow rate increases relatively, the temperature setting value decreases.
所述温度给定值按照式The temperature given value according to the formula
进行计算，其中，T是温度给定值，Q1、Q2分别是第一热水出水口、第二热水出水口的出口热水流量，T0是中心温度给定值，K是温度调节范围系数。Carry out the calculation, where T is the given value of temperature, Q1 and Q2 are the outlet hot water flow rates of the first hot water outlet and the second hot water outlet respectively, T0 is the given value of the central temperature, and K is the temperature adjustment range coefficient .
所述控制器计算温度给定值的步骤是：The steps for the controller to calculate the temperature given value are:
步骤S1，初始化；Step S1, initialization;
步骤S2，对第一热水出水口、第二热水出水口的出口热水流量进行采样；Step S2, sampling the outlet hot water flows of the first hot water outlet and the second hot water outlet;
步骤S3，计算恒温燃气热水器的温度给定值；Step S3, calculating the temperature given value of the constant temperature gas water heater;
步骤S4，进行其他处理及等待；下一次采样时刻到时，转到步骤S2。Step S4, perform other processing and wait; when the next sampling time is up, go to step S2.
所述第一热水出水口、第二热水出水口的出口热水流量的相对大小由混水阀调节改变；所述混水阀的2个进水口分别由水管连接至恒温燃气热水器的第一热水出水口、第二热水出水口。所述第一热水出水口、第二热水出水口的出口热水流量的相对大小或者由第一调节阀、第二调节阀共同调节改变；所述第一调节阀的入水口经水管连接至恒温燃气热水器的第一热水出水口，第二调节阀的入水口经水管连接至恒温燃气热水器的第二热水出水口；所述第一调节阀、第二调节阀的出水口连通为一个出水端。The relative size of the outlet hot water flow of the first hot water outlet and the second hot water outlet is adjusted and changed by the water mixing valve; the two water inlets of the water mixing valve are respectively connected to the second water heater of the constant temperature gas water heater by water pipes. A hot water outlet and a second hot water outlet. The relative size of the outlet hot water flow of the first hot water outlet and the second hot water outlet may be adjusted and changed by the first regulating valve and the second regulating valve; the water inlet of the first regulating valve is connected to To the first hot water outlet of the constant temperature gas water heater, the water inlet of the second regulating valve is connected to the second hot water outlet of the constant temperature gas water heater through a water pipe; the water outlets of the first regulating valve and the second regulating valve are connected as A water outlet.
所述恒温燃气热水器还包括热交换器、冷水进水口和水管，以及电源模块、热水温度检测模块、燃气流量控制驱动模块、风机控制驱动模块、点火控制与火焰检测模块。The constant temperature gas water heater also includes a heat exchanger, a cold water inlet and a water pipe, a power supply module, a hot water temperature detection module, a gas flow control drive module, a fan control drive module, an ignition control and flame detection module.
本发明的有益效果是，无需有线或者无线遥控器，采用通过水阀控制两路热水流量的方法，实现热水器热水温度给定值的远程控制，控制结果稳定可靠。The beneficial effect of the present invention is that the remote control of the given value of the hot water temperature of the water heater is realized by using the method of controlling the two-way hot water flow through the water valve without the need of a wired or wireless remote controller, and the control result is stable and reliable.
附图说明Description of drawings
图1为恒温燃气热水器温度给定方法的系统实施例1结构框图。Fig. 1 is a structural block diagram of Embodiment 1 of the system embodiment 1 of the method for setting the temperature of a constant temperature gas water heater.
图2为恒温燃气热水器温度给定方法的系统实施例2结构框图。Fig. 2 is a structural block diagram of the system embodiment 2 of the method for setting the temperature of a constant temperature gas water heater.
图3为流量检测电路原理框图。Figure 3 is a block diagram of the flow detection circuit.
图4为计算温度给定值的流程图。Figure 4 is a flow chart for calculating a given value of temperature.
具体实施方式Detailed ways
下面结合实施例及附图对本发明作进一步详细的描述，但本发明的实施方式不限于此。The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
恒温燃气热水器温度给定方法的系统实施例1结构框图如图1所示，由热交换器101、第一流量传感器201、第二流量传感器202、第一热水出水口203、第二热水出水口204、冷水进水口205、混水阀301以及冷水管401、主热水管402、第一热水管403、第二热水管404、第一连接水管405、第二连接水管406、混合热水管407、出水喷头302组成。The structural block diagram of Embodiment 1 of the system embodiment 1 of the method for setting the temperature of a constant temperature gas water heater is shown in FIG. Water outlet 204, cold water inlet 205, mixing valve 301, cold water pipe 401, main hot water pipe 402, first hot water pipe 403, second hot water pipe 404, first connecting water pipe 405, second connecting water pipe 406, The mixed hot water pipe 407 and the water outlet nozzle 302 are composed.
所述恒温燃气热水器有1个冷水进水口和2个热水出水口，冷水管401连接在冷水进水口205和热交换器101之间；第一热水管403的一端连接至第一热水出水口203，另外一端连通至主热水管402出水端；第二热水管404的一端连接至第二热水出水口204，另外一端连通至主热水管402出水端；主热水管402的入水端连接至热交换器101。The constant temperature gas water heater has one cold water inlet and two hot water outlets, the cold water pipe 401 is connected between the cold water inlet 205 and the heat exchanger 101; one end of the first hot water pipe 403 is connected to the first hot water The water outlet 203, the other end is connected to the water outlet of the main hot water pipe 402; one end of the second hot water pipe 404 is connected to the second hot water outlet 204, and the other end is connected to the water outlet of the main hot water pipe 402; the main hot water pipe The water inlet end of 402 is connected to heat exchanger 101 .
所述第一流量传感器201安装在第一热水出水口203之前，用于检测第一热水出水口的出口热水流量；所述第二流量传感器202安装在第二热水出水口204之前，用于检测第二热水出水口的出口热水流量。具体来说，第一流量传感器201安装在第一热水管403上，第二流量传感器202安装在第二热水管404上。The first flow sensor 201 is installed before the first hot water outlet 203 for detecting the outlet hot water flow of the first hot water outlet; the second flow sensor 202 is installed before the second hot water outlet 204 , used to detect the outlet hot water flow rate of the second hot water outlet. Specifically, the first flow sensor 201 is installed on the first hot water pipe 403 , and the second flow sensor 202 is installed on the second hot water pipe 404 .
混水阀301的2个进水口分别由第一连接水管405、第二连接水管406连接至恒温燃气热水器的第一热水出水口203、第二热水出水口204；混水阀301的出水口由混合热水管407连接至出水喷头302。混水阀301为冷水、热水混水阀时，第一连接水管405连接至混水阀301的热水进水口，第二连接水管406连接至混水阀301的冷水进水口。The two water inlets of the water mixing valve 301 are respectively connected to the first hot water outlet 203 and the second hot water outlet 204 of the constant temperature gas water heater by the first connecting water pipe 405 and the second connecting water pipe 406; The water outlet is connected to the water outlet nozzle 302 by a mixed hot water pipe 407 . When the water mixing valve 301 is a cold water and hot water mixing valve, the first connecting water pipe 405 is connected to the hot water inlet of the mixing valve 301 , and the second connecting water pipe 406 is connected to the cold water inlet of the mixing valve 301 .
恒温燃气热水器温度给定方法的系统实施例2结构框图如图2所示，与实施例1的不同之处在于，使用第一调节阀303、第二调节阀304代替混水阀301；第一调节阀303的入水口经第一连接水管405连接至恒温燃气热水器的第一热水出水口203，第二调节阀304的入水口经第二连接水管406连接至恒温燃气热水器的第二热水出水口204。第一调节阀303、第二调节阀304的出水口连通为一个出水端与混合热水管407相连接。The structural block diagram of Embodiment 2 of the system embodiment 2 of the method for setting the temperature of a constant temperature gas water heater is shown in Figure 2. The difference from Embodiment 1 is that the mixing valve 301 is replaced by the first regulating valve 303 and the second regulating valve 304; The water inlet of the regulating valve 303 is connected to the first hot water outlet 203 of the constant temperature gas water heater through the first connecting water pipe 405, and the water inlet of the second regulating valve 304 is connected to the second hot water of the constant temperature gas water heater through the second connecting water pipe 406 Water outlet 204. The water outlets of the first regulating valve 303 and the second regulating valve 304 are connected to form a water outlet connected to the mixed hot water pipe 407 .
所述恒温燃气热水器还包括有控制器210，其流量检测电路原理框图如图3所示，第一流量传感器201设有第一流量信号输出端OUT1，用于检测第一热水出水口203的出口热水流量，第一流量信号为电信号，信号类型是脉冲频率，或者是电压，又或者是电流。第二流量传感器202设有第二流量信号输出端OUT2，用于检测第二热水出水口204的出口热水流量，第二流量信号为电信号，信号类型是脉冲频率，或者是电压，又或者是电流。The constant temperature gas water heater also includes a controller 210, the block diagram of its flow detection circuit is shown in Figure 3, the first flow sensor 201 is provided with a first flow signal output port OUT1, which is used to detect For the outlet hot water flow rate, the first flow signal is an electrical signal, and the signal type is pulse frequency, or voltage, or current. The second flow sensor 202 is provided with a second flow signal output terminal OUT2 for detecting the outlet hot water flow of the second hot water outlet 204, the second flow signal is an electrical signal, and the signal type is pulse frequency, or voltage, and or current.
控制器210设有第一流量信号输入端IN1、第二流量信号输入端IN2；第一流量信号输入端IN1、第二流量信号输入端IN2分别连接至第一流量信号输出端OUT1、第二流量信号输出端OUT2。The controller 210 is provided with a first flow signal input terminal IN1 and a second flow signal input terminal IN2; the first flow signal input terminal IN1 and the second flow signal input terminal IN2 are connected to the first flow signal output terminal OUT1 and the second flow signal output terminal OUT1 respectively. Signal output terminal OUT2.
所述恒温燃气热水器温度给定的原理是：The principle of setting the temperature of the constant temperature gas water heater is:
调节混水阀301，或者是调节第一调节阀303、第二调节阀304改变第一热水出水口203、第二热水出水口204的出口热水流量，由第一热水出水口203、第二热水出水口204的出口热水流量的相对大小控制恒温燃气热水器温度给定值；设第一热水出水口203、第二热水出水口204的出口热水流量分别是Q1、Q2，恒温燃气热水器的温度给定值是T，则当Q1相对增大、Q2相对减小时，温度给定值T增大；当Q1相对减小、Q2相对增大时，温度给定值T减小。所述控制器210由第一流量传感器201、第二流量传感器202获取第一热水出水口203、第二热水出水口204的出口热水流量Q1、Q2后，按照式Adjust the water mixing valve 301, or adjust the first regulating valve 303 and the second regulating valve 304 to change the outlet hot water flow of the first hot water outlet 203 and the second hot water outlet 204, and the first hot water outlet 203 , The relative size of the outlet hot water flow of the second hot water outlet 204 controls the temperature given value of the constant temperature gas water heater; the outlet hot water flow of the first hot water outlet 203 and the second hot water outlet 204 are respectively Q1, Q2, the temperature setting value of the constant temperature gas water heater is T, then when Q1 increases relatively and Q2 decreases relatively, the temperature setting value T increases; when Q1 decreases relatively and Q2 increases relatively, the temperature setting value T decrease. After the controller 210 obtains the outlet hot water flow rates Q1 and Q2 of the first hot water outlet 203 and the second hot water outlet 204 from the first flow sensor 201 and the second flow sensor 202, according to the formula
计算恒温燃气热水器的温度给定值T，其中，T0是中心温度给定值，K是温度调节范围系数。流量Q1、Q2的单位是L/min。Calculate the temperature given value T of the constant temperature gas water heater, where T0 is the given value of the center temperature, and K is the temperature adjustment range coefficient. The unit of flow rate Q1 and Q2 is L/min.
热水器的水温控制区间通常是在30℃至80℃之间。例如，选择T0＝50℃，K＝15，则温度给定值T被控制在35℃至65℃。The water temperature control range of the water heater is usually between 30°C and 80°C. For example, if T0=50°C and K=15 are selected, the temperature given value T is controlled at 35°C to 65°C.
所述控制器210由微控制器和外围电路组成。微控制器优选单片机，或者选择ARM、DSP等其他器件。当第一流量信号、第二流量信号的信号类型为脉冲频率时，第一流量信号输入端IN1、第二流量信号输入端IN2为微控制器内部计数器的计数输入端。当第一流量信号、第二流量信号的信号类型为电压，或者是电流时，第一流量信号输入端IN1、第二流量信号输入端IN2为A/D转换器的模拟信号输入端。所述A/D转换器受微控制器控制并由微控制器读取数据，优选地，所述A/D转换器包括在微控制器内部。The controller 210 is composed of a microcontroller and peripheral circuits. The microcontroller is preferably a single-chip microcomputer, or other devices such as ARM and DSP are selected. When the signal types of the first flow signal and the second flow signal are pulse frequency, the input terminal IN1 of the first flow signal and the input terminal IN2 of the second flow signal are the counting input terminals of the internal counter of the microcontroller. When the signal types of the first flow signal and the second flow signal are voltage or current, the first flow signal input terminal IN1 and the second flow signal input terminal IN2 are analog signal input terminals of the A/D converter. The A/D converter is controlled by the microcontroller and reads data by the microcontroller. Preferably, the A/D converter is included in the microcontroller.
所述恒温燃气热水器还包括热水温度检测模块、燃气流量控制驱动模块、风机控制驱动模块、点火控制与火焰检测模块等。进一步地，所述恒温燃气热水器还选择性地包括冷水温度检测模块、温度值显示模块、风压检测模块、蜂鸣器模块中的部分模块或者全部模块。The constant temperature gas water heater also includes a hot water temperature detection module, a gas flow control drive module, a fan control drive module, an ignition control and flame detection module, and the like. Further, the constant temperature gas water heater also optionally includes a cold water temperature detection module, a temperature value display module, a wind pressure detection module, and some or all of the buzzer modules.
所述恒温燃气热水器还包括有电源模块，用于向控制器210、第一流量传感器201、第二流量传感器202以及其他模块供电。The constant temperature gas water heater also includes a power supply module for supplying power to the controller 210, the first flow sensor 201, the second flow sensor 202 and other modules.
控制器210计算温度给定值的流程如图4所示，其步骤是：The flow process of the controller 210 calculating the temperature given value is shown in Figure 4, and its steps are:
步骤S1，初始化；Step S1, initialization;
步骤S2，对第一热水出水口203、第二热水出水口204的出口热水流量Q1、Q2进行采样；步骤S3，计算恒温燃气热水器的温度给定值T；Step S2, sampling the outlet hot water flows Q1 and Q2 of the first hot water outlet 203 and the second hot water outlet 204; Step S3, calculating the temperature given value T of the constant temperature gas water heater;
步骤S4，进行其他处理及等待；下一次采样时刻到时，转到步骤S2。Step S4, perform other processing and wait; when the next sampling time is up, go to step S2.
控制器210除计算恒温燃气热水器的温度给定值T外，还要进行恒温燃气热水器的其他控制。所述其他处理及等待，包括控制器210需要完成的水温温度采样、水温温度控制、燃气流量控制驱动、风机控制驱动、点火控制等，以及等待。控制器210计算获得温度给定值T后，采用适当的控制算法，通过控制燃气流量来控制燃气热水器的加热功率，能够将燃气热水器的出水热水温度控制在温度给定值T附近的允许误差范围之内，实现恒温功能。In addition to calculating the temperature given value T of the constant temperature gas water heater, the controller 210 also performs other controls on the constant temperature gas water heater. The other processes and waits include water temperature sampling, water temperature control, gas flow control drive, fan control drive, ignition control, etc. that need to be completed by the controller 210, as well as waiting. After the controller 210 calculates and obtains the given temperature value T, it adopts an appropriate control algorithm to control the heating power of the gas water heater by controlling the gas flow, so that the temperature of the hot water outlet from the gas water heater can be controlled within the allowable error near the given temperature value T Within the range, the constant temperature function can be realized.
所述下一次采样时刻到时的控制，控制器210采用软件延时，或者是定时器定时实现。The controller 210 adopts software delay or timer timing to realize the control of the time when the next sampling time is up.
所述第一流量传感器201、第二流量传感器202优选同一类型、同一量程范围的水流量传感器。进一步地，所述第一流量传感器201、第二流量传感器202优选采用低成本的、输出信号类型为脉冲频率的霍尔水流量传感器。The first flow sensor 201 and the second flow sensor 202 are preferably water flow sensors of the same type and the same range. Further, the first flow sensor 201 and the second flow sensor 202 are preferably low-cost Hall water flow sensors whose output signal type is pulse frequency.
以上所述仅为本发明的实施例，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的权利要求范围之内。The above description is only an embodiment of the present invention, and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of the claims of the present invention.
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