Dual temperature control method, system and device for gas heating hot water boiler

Abstract

The present invention discloses a dual temperature control method, system and device for a gas heating water heater. The dual temperature control method includes configuring a controller for being electrically connected to an outdoor temperature sensor, an indoor temperature sensor and an outlet water temperature sensor, using the controller to receive T0, Tn and Tc in real time; setting Tns, the controller calculates Tnc according to the formula Tnc=Tns-Tn; when Tnc>T1, executing the startup process, and calculating Ts according to the formula Ts=aTn-bT0+c, heating the system water according to the outlet water temperature difference. The dual temperature control method adjusts the working state of the gas heating water heater in real time by combining parameters such as indoor temperature, outdoor temperature and indoor set temperature to adjust the outlet water temperature, ensuring that the indoor temperature always fluctuates slightly within the set temperature, which can greatly reduce unnecessary energy consumption.

Description

Technical Field

[0001] The invention relates to the technical field of gas-fired heating water heaters, and in particular to a dual temperature control method, system and device for a gas-fired heating water heater. Background Art

[0002] Gas heating hot water boilers are hot water boilers that use gas combustion to heat water to a certain temperature and meet heating requirements through heating pipes and radiators. They belong to the category of civilian boilers. As one of the heat source equipment for winter heating, gas heating hot water boilers heat water to meet indoor heating needs. Generally, heating furnaces adjust the outlet water temperature and control the operation status of heating furnaces to achieve stable heating in an energy-saving state.

[0003] At present, the energy-saving control methods of heating furnaces are mainly as follows: 1. Installing indoor thermostats indoors to monitor the indoor temperature, and then adjusting the opening of the heating furnace according to the indoor temperature. However, the current indoor thermostats can only control the switch of the heating furnace, but cannot adjust the heat load of the heating furnace during operation. The energy-saving effect is not ideal and the energy-saving adjustment effect cannot be achieved. 2. Installing a climate compensation adjustment thermostat outdoors, that is, an outdoor temperature detector, the climate compensation adjustment is based on the outdoor temperature, the outdoor temperature is temperature compensated, the required heating water outlet temperature is calculated, and then the heat load of the heating furnace is adjusted according to the water outlet temperature. However, when the heating furnace is just started, the calculated water outlet temperature cannot meet the large amount of indoor heat demand, resulting in a slow indoor heating speed and unsatisfactory heating effect. In addition, the climate compensation coefficient needs to be set by the user according to the indoor and outdoor temperature difference. Generally, users do not have the ability to set this coefficient, or the user is not sure about the accuracy of this coefficient, which is easy to lead to unsatisfactory actual heating effect. In addition, the adjustment process is cumbersome and requires multiple verifications. Therefore, most users will give up using this function. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, one of the objects of the present invention is to provide a dual temperature control method for a gas-fired heating hot water boiler to solve the above-mentioned traditional problems. It adjusts the outlet water temperature of the heating furnace in real time by combining parameters such as indoor temperature, outdoor temperature and indoor set temperature, so that the heating furnace can save gas and avoid waste while ensuring normal heating needs. At the same time, it can also heat up more quickly in the initial stage of startup, thereby achieving the requirements of stable and rapid heating of the indoor temperature.

[0005] A second object of the present invention is to provide a dual temperature control system for the gas heating water boiler.

[0006] A third object of the present invention is to provide a heating device with a dual temperature control system using the above-mentioned gas heating hot water boiler.

[0007] A fourth object of the present invention is to provide a control device that adopts the dual temperature control method of the above-mentioned gas heating water boiler.

[0008] One of the purposes of the present invention is achieved by the following technical solution:

[0009] A dual temperature control method for a gas heating water heater comprises the following steps:

[0010] S1: an outdoor temperature sensor for detecting the outdoor temperature is arranged outdoors, an indoor temperature sensor for detecting the indoor temperature is arranged indoors, and an outlet water temperature sensor for detecting the outlet water temperature of the gas heating water heater is arranged at the outlet end of the gas heating water heater;

[0011] S2: A controller is configured on the gas heating water heater to be electrically connected to the outdoor temperature sensor, the indoor temperature sensor, and the outlet water temperature sensor, and the controller is used to receive in real time the temperature signal T0 fed back by the outdoor temperature sensor, the temperature signal Tn fed back by the indoor temperature sensor, and the temperature signal Tc fed back by the outlet water temperature sensor;

[0012] S3: Set the indoor temperature setting threshold Tns, and the controller calculates the indoor setting temperature difference Tnc according to the formula Tnc=Tns-Tn;

[0013] When Tnc>T1, the controller controls the gas heating water heater to execute the startup process, and calculates the outlet water temperature setting value Ts according to the formula Ts=aTn-bT0+c, and heats the system water according to the temperature difference between the outlet water temperature setting value and the outlet water temperature, so that the gas heating water heater is in working state;

[0014] Among them, T1 is the first preset temperature difference threshold, and the value range of T1 is 2°C to 5°C; the value range of a is 2 to 3; the value range of b is 1 to 2; and the value range of c is -5 to 10.

[0015] Preferably, in step S3, the heating mode in the gas heating water boiler is divided into floor heating mode and heat sink mode; in the floor heating mode, Ts=2Tn-T0+c, where the value range of c is -3 to 5; in the heat sink mode, Ts=2.5Tn-1.5T0+c, where the value range of c is -5 to 10.

[0016] Preferably, in step S3, the gas heating water heater is in working state, and the following judgment steps are performed to calculate the outlet water temperature setting value Ts, and heat the system water according to the temperature difference between the outlet water temperature setting value and the outlet water temperature:

[0017] S30: When Tnc>T2, in floor heating mode, if Ts=2Tn-T0+5<50℃, then Ts is 50℃; if Ts=2Tn-T0+5≥50, then Ts=2Tn-T0+5; in heat sink mode, if Ts=2.5Tn-1.5T0+10<75℃, then Ts is 75℃; if Ts=2.5Tn-1.5T0+10≥75℃, then Ts=2.5Tn-1.5T0+10;

[0018] S31: When T2≥Tnc>T3, in floor heating mode, Ts=2Tn-T0+5; in heat sink mode, Ts=2.5Tn-1.5T0+10;

[0019] S32: When T3 ≥ Tnc > T4, in floor heating mode, Ts = 2Tn - T0; in heat sink mode, Ts = 2.5Tn - 1.5T0;

[0020] S33: When T4 ≥ Tnc ≥ T5, in floor heating mode, Ts = 2Tn-T0-3; in heat sink mode, Ts = 2.5Tn-1.5T0-5;

[0021] S34: When Tnc<T5, the controller controls the gas heating water heater to execute the shutdown process, so that the gas heating water heater is in a shutdown state, and returns to step S2; when Tnc>T6, the controller controls the gas heating water heater to execute the startup process, and continues to execute steps S30-S33 to calculate the water temperature setting value Ts;

[0022] Among them, T2>T3>T1≥T6>T4>T5, T2-T3=4, T3-T4=4, T4-T5=2.

[0023] Preferably, in step S3, T2=8°C, T3=4°C, T4=0°C, T5=-2°C, T6=2°C.

[0024] Preferably, in step S3, T1 = 2°C.

[0025] Preferably, in the floor heating mode, the maximum temperature of the water outlet temperature setting value Ts is not greater than 85°C; in the heat sink mode, the maximum temperature of the water outlet temperature setting value Ts is not greater than 60°C.

[0026] The second object of the present invention is achieved by adopting the following technical solution:

[0027] A dual temperature control system for a gas heating water heater, comprising:

[0028] Data detection module, used to detect outdoor temperature, indoor temperature, and outlet water temperature;

[0029] A data acquisition module is used to obtain temperature signals of outdoor temperature, indoor temperature, and outlet water temperature, and to obtain a setting threshold of indoor temperature;

[0030] The judgment and execution module is used to calculate the indoor set temperature difference Tnc according to the formula Tnc=Tns-Tn;

[0031] When Tnc>T1, the controller controls the gas heating water heater to execute the startup process, and calculates the outlet water temperature setting value Ts according to the formula Ts=aTn-bT0+c, and heats the system water according to the temperature difference between the outlet water temperature setting value and the outlet water temperature, so that the gas heating water heater is in working state;

[0032] Among them, Tnc is the indoor set temperature difference; Tns is the indoor temperature setting threshold; Tn is the indoor temperature; T0 is the outdoor temperature; T1 is the first preset temperature difference threshold, and the value range of T1 is 2℃~5℃; the value range of a is 2~3; the value range of b is 1~2; the value range of c is -5~10.

[0033] The third object of the present invention is achieved by adopting the following technical solution:

[0034] A heating device comprises the dual temperature control system of the gas heating water heater described above.

[0035] Preferably, the heating device further comprises:

[0036] An outdoor temperature sensor is used to detect the outdoor ambient temperature and obtain the outdoor detection temperature;

[0037] Indoor temperature sensor, used to detect the indoor ambient temperature and obtain the indoor detection temperature;

[0038] The outlet water temperature sensor is used to detect the outlet water temperature of the gas heating water boiler and obtain the outlet water temperature of the heating water;

[0039] A controller is used to receive the temperature value of the detected temperature from each sensor in real time and obtain the indoor temperature setting threshold, and the controller executes the steps of the dual temperature control method of the gas heating water boiler as described in any one of claims 1-6.

[0040] The fourth object of the present invention is achieved by the following technical solution:

[0041] A control device comprises a storage device and a processor, wherein the storage device stores a program for implementing any one of the above-mentioned dual temperature control methods for a gas heating water boiler; the processor loads the program stored in the storage device and executes the steps of any one of the above-mentioned dual temperature control methods for a gas heating water boiler.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. The dual temperature control method of the gas heating water heater of the present invention adjusts the working state of the gas heating water heater in real time by combining parameters such as indoor temperature, outdoor temperature and indoor set temperature to adjust the water outlet temperature, thereby ensuring that the indoor temperature is always maintained at the set temperature with small fluctuations, which can greatly reduce unnecessary energy consumption. At the same time, it can also heat up more quickly in the initial startup, which is suitable for office workers. They can lower the room temperature during the day and raise the room temperature when they return home in the evening, thereby achieving the requirements of stable indoor temperature and rapid heating.

[0044] 2. The dual temperature control method of the gas heating water boiler of the present invention first collects the indoor temperature, outdoor temperature, indoor set temperature and indoor temperature setting threshold, and calculates the indoor set temperature difference, so as to adjust the working state of the gas heating water boiler in real time. When the gas heating water boiler is in the working state, the system water is heated according to the temperature difference between the calculated outlet water temperature setting value and the outlet water temperature. When the indoor temperature is in the process of adjustment, it continues to rise to adjust the outlet water temperature setting value, so that the temperature difference between the outlet water temperature setting value and the outlet water temperature gradually becomes smaller, so that the outlet water temperature difference tends to be stable or fluctuates less. Since the heat of the high-temperature system water needs to be transferred to the air first to heat the indoor air, and then the indoor temperature is fed back to the controller through the detection of the indoor temperature sensor, and then the outlet water temperature setting value is adjusted, so that the indoor temperature will not be too hot or the temperature rises too slowly due to the high and low outlet water temperature, thereby achieving a more accurate dual control effect.

[0045] 3. The dual temperature control method of the gas heating water boiler of the present invention divides the heating mode into two modes, namely, floor heating mode and heat sink mode. According to the difference in heat transfer methods of different modes, the water outlet temperature is further adjusted to make the calculated water outlet temperature setting value more in line with the actual indoor temperature fluctuation, so as to further ensure that the indoor temperature is always maintained at the set temperature with small fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 The present invention is a control flow chart of the dual temperature control method of the gas heating water boiler. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0048] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the description of the present invention, it should be understood that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be intermediate elements at the same time. On the contrary, when an element is said to be "directly" connected to another element, there are no intermediate elements.

[0050] Example 1

[0051] like Figure 1 As shown, a dual temperature control method for a gas heating water boiler comprises the following steps:

[0052] S1: An outdoor temperature sensor for detecting the outdoor temperature is configured outdoors, an indoor temperature sensor for detecting the indoor temperature is configured indoors, and an outlet water temperature sensor for detecting the outlet water temperature of the gas heating water boiler is configured at the water outlet end of the gas heating water boiler.

[0053] In one embodiment, the outdoor temperature sensor is installed on the outer pipe of the balancing chimney, that is, the air intake pipe, or the outdoor temperature sensor is installed under the shielding plate to avoid being covered by snow when it snows, which affects the accuracy of its detection. The indoor temperature sensor is installed in the living room, bedroom and other places, and the corresponding installation position is selected according to the need for temperature control. The water outlet temperature sensor is set at the outlet of the main heat exchanger of the gas heating water heater to accurately detect the water outlet temperature, or installed at the outlet of the heating pipe in the heating circulation system.

[0054] S2: A controller is configured on the gas heating water boiler to be electrically connected to the outdoor temperature sensor, the indoor temperature sensor, and the outlet water temperature sensor, and the controller is used to receive in real time the temperature signal T0 fed back by the outdoor temperature sensor, the temperature signal Tn fed back by the indoor temperature sensor, and the temperature signal Tc fed back by the outlet water temperature sensor.

[0055] Among them, the signal receiving end of the controller receives the temperature signals sent by each temperature sensor by using data transmission lines, Bluetooth signals, WiFi signals, cloud and other methods.

[0056] S3: The indoor temperature setting threshold Tns is set on the controller, and the controller calculates the indoor setting temperature difference Tnc according to the formula Tnc=Tns-Tn.

[0057] When Tnc=Tns-Tn>the first preset temperature difference threshold value T1, the controller controls the gas heating water heater to execute the startup process, and calculates the outlet water temperature setting value Ts according to the formula Ts=aTn-bT0+c, and heats the system water according to the temperature difference between the outlet water temperature setting value and the outlet water temperature, so that the gas heating water heater is in working state. Among them, the value range of T1 is 2℃~5℃; the value range of a is 2~3; the value range of b is 1~2; the value range of c is -5~10.

[0058] In one embodiment, the startup process of the gas heating water boiler is: the water supply pump, fan, gas valve and other equipment are started and operated in sequence, and then the igniter is ignited to allow the high-temperature flue gas to heat the system water.

[0059] It can be understood that in step S3, the indoor temperature setting threshold Tns is first set according to the region, the size of the heating space or the user's requirements, and then the indoor setting temperature difference is calculated by comparison. According to the size of the indoor setting temperature difference, the heating furnace executes different operating states. If the heating furnace is in the working state, the system water is heated by calculating the temperature difference between the outlet water temperature setting value Ts and the outlet water temperature Tc, and the indoor temperature is continuously increased.

[0060] The dual temperature control method of the above-mentioned gas heating water heater combines parameters such as indoor temperature, outdoor temperature and indoor set temperature to adjust the working state of the gas heating water heater in real time to adjust the water outlet temperature, thereby ensuring that the indoor temperature always remains at the set temperature with small fluctuations, which can greatly reduce unnecessary energy consumption. At the same time, it can also heat up faster in the initial startup, which is suitable for office workers. They can lower the room temperature during the day and raise the room temperature when they return home in the evening, thereby achieving the requirements of stable indoor temperature and rapid heating.

[0061] Example 2

[0062] In addition to the control method of Example 1, in order to distinguish different heating equipment and avoid heat transfer differences in the heating process, in this embodiment, the heating modes in the gas heating hot water boiler are divided into floor heating mode and heat sink mode; in the floor heating mode, Ts=2Tn-T0+c, where c has a value range of -3 to 5, that is, in the floor heating mode, a=2, b=1, and c is a variable value, and the value is different according to the different indoor temperature difference settings; in the heat sink mode, Ts=2.5Tn-1.5T0+c, where c has a value range of -5 to 10, that is, in the heat sink mode, a=2.5, b=1.5, and c is a variable value, and the value is different according to the different indoor temperature difference settings.

[0063] In one of the embodiments, in order to better optimize the outlet water temperature setting value, the heat transfer differences of various heating equipment are combined, and the problem of the actual heating equipment having risen to a higher temperature but the indoor temperature is still low during the heating process is solved; when the indoor temperature has risen to the preset temperature, the heating equipment is still at a higher temperature, resulting in the indoor temperature continuing to rise after the furnace is shut down.

[0064] For example Figure 1 As shown, in step S3, the gas heating water heater is in working state, and the following judgment steps are performed to calculate the outlet water temperature setting value Ts, and heat the system water according to the temperature difference between the outlet water temperature setting value and the outlet water temperature:

[0065] S30: When Tnc>T2, in floor heating mode, if Ts=2Tn-T0+5<50℃, then Ts is 50℃; if Ts=2Tn-T0+5≥50, then Ts=2Tn-T0+5; in heat sink mode, if Ts=2.5Tn-1.5T0+10<75℃, then Ts is 75℃; if Ts=2.5Tn-1.5T0+10≥75℃, then Ts=2.5Tn-1.5T0+10;

[0066] S31: When T2≥Tnc>T3, in floor heating mode, Ts=2Tn-T0+5; in heat sink mode, Ts=2.5Tn-1.5T0+10;

[0067] S32: When T3 ≥ Tnc > T4, in floor heating mode, Ts = 2Tn - T0; in heat sink mode, Ts = 2.5Tn - 1.5T0;

[0068] S33: When T4 ≥ Tnc ≥ T5, in floor heating mode, Ts = 2Tn-T0-3; in heat sink mode, Ts = 2.5Tn-1.5T0-5;

[0069] S34: When Tnc<T5, the controller controls the gas heating water heater to execute the shutdown process, so that the gas heating water heater is in a shutdown state, and returns to step S2; when Tnc>T6, the controller controls the gas heating water heater to execute the startup process, and continues to execute steps S30-S33 to calculate the water temperature setting value Ts;

[0070] Among them, T2>T3>T1≥T6>T4>T5, T2-T3=4, T3-T4=4, T4-T5=2.

[0071] In this embodiment, in step S3, T2 = 8°C, T3 = 4°C, T4 = 0°C, T5 = -2°C, and T6 = 2°C.

[0072] In one embodiment, the first preset temperature difference threshold T1 is 2°C, that is, when Tnc=Tns-Tn>2°C, the gas heating water heater is in a normal heating working state, and when Tnc=Tns-Tn≤2°C, the gas heating water heater is in a standby state. In this embodiment, T1 is 2°C, so that the gas heating water heater can adjust the working state of the gas heating water heater in real time, thereby adjusting the outlet water temperature to ensure that the indoor temperature always fluctuates slightly within the set temperature, which can greatly reduce unnecessary energy consumption. The above setting enables the gas heating water heater to heat up more quickly at the initial start-up, and can achieve the requirements of stable and rapid indoor temperature rise. The preset temperature difference threshold T1 is pre-set in the controller and does not need to be set by the user. In other embodiments, the first preset temperature difference threshold T1 can also be other temperature thresholds, such as 3°C, 4°C, 5°C, 6°C, etc., which are preset according to needs or different regions, and will not be repeated here.

[0073] The dual temperature control method of the above-mentioned gas heating water heater first collects indoor temperature, outdoor temperature, indoor set temperature and indoor temperature setting threshold, and calculates the indoor set temperature difference to adjust the working state of the gas heating water heater in real time. When the gas heating water heater is in working state, the system water is heated according to the temperature difference between the calculated outlet water temperature setting value and the outlet water temperature. When the indoor temperature is in the process of adjustment, it continues to rise to adjust the outlet water temperature setting value, so that the temperature difference between the outlet water temperature setting value and the outlet water temperature gradually becomes smaller, so that the outlet water temperature difference tends to be stable or fluctuates less. Since the heat of the high-temperature system water needs to be transferred to the air first to heat the indoor air, and then the indoor temperature is fed back to the controller through the detection of the indoor temperature sensor, and then the outlet water temperature setting value is adjusted, so that the indoor temperature will not be too hot or rise too slowly due to the high and low outlet water temperature, thereby achieving a more accurate dual control effect.

[0074] In this embodiment, in the floor heating mode, the maximum temperature of the water outlet temperature setting value Ts is not greater than 85°C; in the heat sink mode, the maximum temperature of the water outlet temperature setting value Ts is not greater than 60°C.

[0075] Example 3

[0076] A dual temperature control system for a gas heating water heater, comprising:

[0077] A data detection module is used to detect outdoor temperature, indoor temperature, and outlet water temperature. The outdoor temperature is detected by an outdoor temperature sensor, the indoor temperature is detected by an indoor temperature sensor, and the outlet water temperature is detected by an outlet water temperature sensor;

[0078] A data acquisition module is used to obtain temperature signals of outdoor temperature, indoor temperature, and outlet water temperature, and to obtain a setting threshold of indoor temperature;

[0079] The judgment and execution module is used to calculate the indoor set temperature difference Tnc according to the formula Tnc=Tns-Tn;

[0080] When Tnc>T1, the controller controls the gas heating water heater to execute the startup process, and calculates the outlet water temperature setting value Ts according to the formula Ts=aTn-bT0+c, and heats the system water according to the temperature difference between the outlet water temperature setting value and the outlet water temperature, so that the gas heating water heater is in working state;

[0081] Among them, Tnc is the indoor set temperature difference; Tns is the indoor temperature setting threshold; Tn is the indoor temperature; T0 is the outdoor temperature; T1 is the first preset temperature difference threshold, and the value range of T1 is 2℃~5℃; the value range of a is 2~3; the value range of b is 1~2; the value range of c is -5~10.

[0082] The dual temperature control system of the present invention realizes regulation of the outlet water temperature setting value through a data detection module, a data acquisition module, and a judgment and execution module, so that the heating furnace can save gas and avoid waste while ensuring normal heating needs.

[0083] Example 4

[0084] A heating device includes a shell, a combustion chamber installed in the shell, a main heat exchanger located on the combustion chamber, a water supply pump and a heat dissipation device (such as a heat sink or a floor heating coil) connected to the main heat exchanger, a fan connected to the combustion chamber, a venturi (or a premixer), a proportional valve (gas valve) and a controller.

[0085] Its working principle is: when receiving the need to start the heating mode, or the bathroom mode is converted to the heating mode, the gas, air and system water in the furnace body are as follows:

[0086] Gas and air: The fan rotates to allow air to enter the Venturi. The gas is regulated by a proportional valve, enters the Venturi and mixes with the air, and then enters the combustion chamber for ignition and combustion. The high-temperature flue gas obtained from the combustion heats the system water in the main heat exchanger to reach the temperature required by the controller.

[0087] System water: Start the water supply pump to allow the system water to flow along the main heat exchanger and heat dissipation equipment, and then return to the water supply pump to form an internal circulation.

[0088] Among them, the heating device includes the dual temperature control system of the gas heating hot water boiler of Example 3.

[0089] In this embodiment, the heating device further includes:

[0090] An outdoor temperature sensor is used to detect the outdoor ambient temperature and obtain the outdoor detection temperature;

[0091] Indoor temperature sensor, used to detect the indoor ambient temperature and obtain the indoor detection temperature;

[0092] The outlet water temperature sensor is used to detect the outlet water temperature of the gas heating water boiler and obtain the outlet water temperature of the heating water;

[0093] A controller is used to receive the temperature value of the detected temperature from each sensor in real time and obtain the indoor temperature setting threshold. The controller executes the steps of the dual temperature control method of the gas heating water boiler described in any of the above items.

[0094] Example 5

[0095] A control device comprises a storage device and a processor, wherein the storage device stores a program for implementing the dual temperature control method for a gas heating water heater as described in any one of the preceding items; the processor loads the program stored in the storage device and executes the steps of the dual temperature control method for a gas heating water heater as described in any one of the preceding items.

[0096] Further, it should be understood that since the setting of each module is only for illustrating the functional units of the system of the present invention, the physical devices corresponding to these modules can be the processor itself, or a part of the software in the processor, a part of the hardware, or a part of the combination of software and hardware. Therefore, the number of each module in the figure is only schematic.

[0097] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A dual temperature control method for a gas heating water heater, characterized in that: The steps include: S1: an outdoor temperature sensor for detecting the outdoor temperature is arranged outdoors, an indoor temperature sensor for detecting the indoor temperature is arranged indoors, and an outlet water temperature sensor for detecting the outlet water temperature of the gas heating water heater is arranged at the outlet end of the gas heating water heater; S2: A controller is configured on the gas heating water heater to be electrically connected to the outdoor temperature sensor, the indoor temperature sensor, and the outlet water temperature sensor, and the controller is used to receive in real time the temperature signal T0 fed back by the outdoor temperature sensor, the temperature signal Tn fed back by the indoor temperature sensor, and the temperature signal Tc fed back by the outlet water temperature sensor; S3: Set the indoor temperature setting threshold Tns, and the controller calculates the indoor setting temperature difference Tnc according to the formula Tnc=Tns-Tn; When Tnc>T1, the controller controls the gas heating water heater to execute the startup process, and calculates the outlet water temperature setting value Ts according to the formula Ts=aTn- bT0+c, and heats the system water according to the temperature difference between the outlet water temperature setting value and the outlet water temperature, so that the gas heating water heater is in working state; Wherein, T1 is the first preset temperature difference threshold, and the value range of T1 is 2°C~5°C; the value range of a is 2~3; the value range of b is 1~2; the value range of c is -5~10; In step S3, the heating mode in the gas heating water heater is divided into a floor heating mode and a heat sink mode; in the floor heating mode, Ts=2Tn- T0+ c, where c is in the range of -3 to 5; in the heat sink mode, Ts=2.5Tn- 1.5T0+ c, where c is in the range of -5 to 10; In step S3, when the gas heating water heater is in working state, the following judgment steps are performed to calculate the outlet water temperature setting value Ts, and the system water is heated according to the temperature difference between the outlet water temperature setting value and the outlet water temperature: S30: When Tnc > T2, in floor heating mode, if Ts = 2Tn- T0+5 < 50 °C, Ts is 50 °C; if Ts = 2Tn-T0+5 ≥ 50, then Ts = 2Tn- T0+5; in heat sink mode, if Ts = 2.5Tn- 1.5T0+10 < 75 °C, then Ts is 75 °C; if Ts = 2.5Tn- 1.5T0+10 ≥ 75 °C, then Ts = 2.5Tn- 1.5T0+10; S31: When T2≥Tnc >T3, in floor heating mode, Ts=2Tn- T0+5; in heat sink mode, Ts=2.5Tn-1.5T0+10; S32: When T3≥Tnc>T4, in floor heating mode, Ts=2Tn-T0; in heat sink mode, Ts=2.5Tn-1.5T0; S33: When T4 ≥ Tnc ≥ T5, in floor heating mode, Ts = 2Tn- T0-3; in heat sink mode, Ts = 2.5Tn-1.5T0-5; S34: When Tnc<T5, the controller controls the gas heating water heater to execute the shutdown process, so that the gas heating water heater is in a shutdown state, and returns to step S2; when Tnc>T6, the controller controls the gas heating water heater to execute the startup process, and continues to execute steps S30~S33 to calculate the water temperature setting value Ts; Among them, T2> T3> T1≥ T6> T4 > T5, T2- T3=4, T3- T4=4, T4- T5=2.

2. The dual temperature control method of the gas heating water heater according to claim 1, characterized in that: In step S3, T2=8°C, T3=4°C, T4=0°C, T5= -2°C, and T6=2°C.

3. The dual temperature control method of the gas heating water heater according to claim 2, characterized in that: In step S3, T1=2°C.

4. The dual temperature control method of the gas heating water heater according to claim 1, characterized in that: In the floor heating mode, the maximum temperature of the water outlet temperature setting value Ts is not greater than 85°C; in the heat sink mode, the maximum temperature of the water outlet temperature setting value Ts is not greater than 60°C.

5. A dual temperature control system for a gas heating water heater, using the dual temperature control method for a gas heating water heater as claimed in any one of claims 1 to 4, characterized in that: The dual temperature control system of the gas heating water heater comprises: Data detection module, used to detect outdoor temperature, indoor temperature, and outlet water temperature; A data acquisition module is used to obtain temperature signals of outdoor temperature, indoor temperature, and outlet water temperature, and to obtain a setting threshold of indoor temperature; The judgment and execution module is used to calculate the indoor set temperature difference Tnc according to the formula Tnc=Tns-Tn; When Tnc>T1, the controller controls the gas heating water heater to execute the startup process, and calculates the outlet water temperature setting value Ts according to the formula Ts=aTn- bT0+c, and heats the system water according to the temperature difference between the outlet water temperature setting value and the outlet water temperature, so that the gas heating water heater is in working state; Among them, Tnc is the indoor set temperature difference; Tns is the indoor temperature setting threshold; Tn is the indoor temperature; T0 is the outdoor temperature; T1 is the first preset temperature difference threshold, and the value range of T1 is 2℃~5℃; the value range of a is 2~3; the value range of b is 1~2; the value range of c is -5~10.

6. A heating device, characterized in that: A dual temperature control system comprising the gas heating water heater as claimed in claim 5.

7. The heating device according to claim 6, characterized in that: Also includes: An outdoor temperature sensor is used to detect the outdoor ambient temperature and obtain the outdoor detection temperature; Indoor temperature sensor, used to detect indoor ambient temperature and obtain indoor detection temperature; The outlet water temperature sensor is used to detect the outlet water temperature of the gas heating water boiler and obtain the outlet water temperature of the heating water; A controller is used to receive the temperature value of the detected temperature from each sensor in real time and obtain the indoor temperature setting threshold, and the controller executes the steps of the dual temperature control method of the gas heating water boiler as described in any one of claims 1-4.

8. A control device, characterized in that: It includes a storage device and a processor, wherein the storage device stores a program for implementing the dual temperature control method of the gas heating water boiler as described in any one of claims 1 to 4; the processor loads the program stored in the storage device and executes the steps of the dual temperature control method of the gas heating water boiler as described in any one of claims 1 to 4.

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