Energy-saving control system of gas boiler based on Internet of Things

Abstract

The invention discloses an energy-saving control system for a gas boiler based on the Internet of Things, and the system comprises a data collection module which is used for collecting the power consumption of the system, the boiler water outlet temperature, the boiler water return temperature, the indoor temperature and humidity, and the outdoor temperature and humidity; the data communication and processing module is responsible for transmitting data and processing a communication protocol, and analyzing the received data; the early warning module monitors data acquisition information in real time and performs fault early warning; the central control server instruction issuing module is used for sending the analyzed data to a central control server, and the central control server generates an accurate temperature control instruction according to an analysis result and sends the accurate temperature control instruction to the gas-fired boiler host; the control module is used for receiving an instruction of the central control server and controlling operation of the boiler; the user interaction and configuration module provides a user interface; the system has the capability of adjusting the set temperature in real time, automatic control can be carried out according to the external environment and user requirements, and energy consumption is remarkably reduced and the indoor temperature is accurately and stably controlled.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent heating, and in particular relates to an energy-saving control system of a gas boiler based on the Internet of Things. Background Art

[0002] At the current stage, the management mode of gas boilers generally presents extensive characteristics. This management mode is not only inefficient, but also far from the needs of modern and intelligent energy management. Specifically, gas boilers lack the ability to adjust the set temperature in real time, and most of them rely on manual settings, which not only increases labor costs, but also causes the boiler to be in unnecessary continuous operation in many cases. This non-optimized operation mode undoubtedly causes a lot of energy waste, which is not in line with the environmental protection concept of energy conservation and emission reduction, and also increases operating costs.

[0004] From a technical perspective, the shortcomings of existing gas boiler control systems are particularly prominent. First, the control efficiency is low and the degree of automation is insufficient, making it difficult to flexibly adjust the boiler according to actual needs during operation. This not only limits the operating efficiency of the boiler, but also increases unnecessary energy consumption. Secondly, the control accuracy of gas boilers is not high, which often leads to excessive energy consumption of the system. At the same time, the indoor temperature fluctuates greatly, making it difficult to meet customers' comfort and energy-saving needs.

[0005] In order to solve the existing problems, we propose an energy-saving control system for gas boilers based on the Internet of Things. Summary of the invention

[0006] The purpose of the present invention is to provide an energy-saving control system for a gas boiler based on the Internet of Things to solve the problems raised in the above background technology.

[0007] An energy-saving control system for a gas boiler based on the Internet of Things, characterized in that it includes

[0008] Data acquisition module, used to collect system power consumption, boiler outlet water temperature, boiler return water temperature, indoor temperature and humidity, outdoor temperature and humidity;

[0009] The data communication and processing module is responsible for data transmission and communication protocol processing, and analyzes the received data;

[0010] Early warning module, which implements monitoring data collection information and provides fault early warning;

[0011] The command sending module of the central control server sends the analyzed data to the central control server. The central control server generates accurate temperature control instructions based on the analysis results and sends them to the gas boiler host.

[0012] The control module receives instructions from the central control server and controls the operation of the boiler;

[0013] User interaction and configuration module, providing the user interface.

[0014] Preferably, the method for the control module to control the operation of the boiler includes a first control method, and the first control method includes:

[0015] When the indoor temperature is not lower than the indoor upper limit setting temperature, 1 Then start the first energy-saving mode, and when the indoor temperature is not higher than the indoor upper limit setting temperature, turn off the energy-saving mode;

[0016] After the first energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature and lasts for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, 2 Then start the second energy-saving mode. If the indoor temperature is higher than the indoor upper limit setting temperature, the indoor temperature is higher than the indoor upper limit setting temperature for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, the energy-saving mode is turned off.

[0017] After the second energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature and lasts for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, 3 Then the third energy-saving mode is started. When the indoor temperature is higher than the indoor upper limit setting temperature, the indoor temperature is higher than the indoor upper limit setting temperature for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, the first energy-saving mode is started;

[0018] After the third energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature, the third energy-saving mode is maintained, otherwise the second energy-saving mode is activated.

[0019] Preferably, the calculation formulas of t1, t2, and t3 are:

[0020] t n =△t*k*(Tblr,out,tim2-Tblr,out,tim1) / (T,tim2-T,tim1)

[0021] in:

[0022] △t: tim2 and tim 1 The difference, accurate to min;

[0023] k: time interval correction factor;

[0024] Tblr,out,tim 1 : boiler outlet water temperature at tim1;

[0025] Tblr,out,tim 2 : boiler outlet water temperature at tim1;

[0026] T,tim 1 : Indoor temperature at tim1;

[0027] T,tim 2 : Indoor temperature at tim2;

[0028] n=1,2,3......。

[0029] Preferably, the boiler outlet water temperature ranges of the first energy-saving mode, the second energy-saving mode, and the third energy-saving mode are different. The boiler outlet water temperature range of the first energy-saving mode is higher than that of the second energy-saving mode, and the boiler outlet water temperature range of the second energy-saving mode is higher than that of the third energy-saving mode.

[0030] Preferably, the boiler outlet water temperature calculation formula is:

[0031]

[0032] in,

[0033] Tblr,out,set is the boiler outlet water setting temperature;

[0034] Tblr,out,max is the maximum outlet water temperature of the boiler;

[0035] Tblr,out,min is the minimum outlet water temperature of the boiler;

[0036] Qmax is the maximum heating capacity of the system;

[0037] Qmin is the minimum heating capacity of the system;

[0038] Qf is the actual load heating capacity;

[0039] K is the additional coefficient of building energy consumption.

[0040] Preferably, the calculation formula of Qf is Qf = Hn-Hf / (Hn-Hs) × Qmax

[0041] in:

[0042] Hn is the indoor enthalpy;

[0043] Hf is the current outdoor enthalpy value;

[0044] Hs is the standard enthalpy;

[0045] Qmax is the maximum heating capacity.

[0046] Preferably, the calculation formula of K is:

[0047] K=(0.6+Bsa / Bv)×sic×(1-o1c)×k4×k5

[0048] in:

[0049] scb is the building shape correction factor;

[0050] Bsa is the building surface area;

[0051] Bv is the building volume;

[0052] o1c is the building orientation and lighting correction factor;

[0053] k4 is the correction factor for the use of the building, ranging from 0.8 to 1.2;

[0054] k5 is the wind correction factor at the location of the building;

[0055] sic is the correction coefficient of building insulation material, sic=∑(sic1+sic2+...+sicn) / n, where n=1,2,3...

[0056] Preferably, the enthalpy value is determined from a psychrometric diagram.

[0057] Preferably, the method for controlling the operation of the boiler by the control module further includes a second control method, and the second control method includes:

[0058] Collect weather forecast data and information to generate corresponding weather temperature and humidity curves;

[0059] Based on past data, the temperature, power and time of boiler outlet water are obtained using the weather temperature and humidity curve.

[0060] Preferably, when the early warning module detects that data collection is abnormal, the alarm mode is activated, and the control module controls the boiler to operate and start the second control method. When the early warning module detects that data collection returns to normal, the control module controls the boiler to operate the first control method.

[0061] An energy-saving control method for a gas boiler based on the Internet of Things includes:

[0062] The data acquisition module collects system power consumption, boiler outlet water temperature, boiler return water temperature, indoor temperature and humidity, and outdoor temperature and humidity;

[0063] The data communication and processing module transmits the collected data, processes the communication protocol, and analyzes the received data;

[0064] The command issuing module of the central control server sends the analyzed data to the central control server. The central control server generates accurate temperature control instructions based on the analysis results and sends them to the gas boiler host.

[0065] The control module receives the instruction from the central control server and controls the operation of the boiler using two first control methods and a second control method;

[0066] The first control method includes:

[0067] When the indoor temperature is not lower than the indoor upper limit setting temperature, 1 Then start the first energy-saving mode, and when the indoor temperature is not higher than the indoor upper limit setting temperature, turn off the energy-saving mode;

[0068] After the first energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature and lasts for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, 2 Then start the second energy-saving mode. If the indoor temperature is higher than the indoor upper limit setting temperature, the indoor temperature is higher than the indoor upper limit setting temperature for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, the energy-saving mode is turned off.

[0069] After the second energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature and lasts for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, 3 Then the third energy-saving mode is started. When the indoor temperature is higher than the indoor upper limit setting temperature, the indoor temperature is higher than the indoor upper limit setting temperature for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, the first energy-saving mode is started;

[0070] After the third energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature, the third energy-saving mode is maintained, otherwise the second energy-saving mode is activated.

[0071] The second control method includes:

[0072] Collect weather forecast data and information to generate corresponding weather temperature and humidity curves;

[0073] Based on past experience data, the temperature, power and time of boiler outlet water are obtained using the weather temperature and humidity curve.

[0074] The early warning module monitors the data collection information, operates and issues fault warnings when the data information is normal. Under normal circumstances, the control module controls the boiler to operate the first control method, but when the early warning module detects that the data collection is abnormal, the alarm mode is activated, and the control module controls the boiler to operate and start the second control method. When the early warning module detects that the data collection has returned to normal, the control module controls the boiler to operate and resume the first control method.

[0075] The user interaction and configuration module provides a user interface, and the user can use the user interface to perform operations.

[0076] Compared with the prior art, the present invention has the following beneficial effects:

[0077] The energy-saving control system provided by the present invention provides users with an efficient, energy-saving and intelligent boiler control solution through precise metering and monitoring, efficient energy-saving control, intelligent management, data visualization and analysis.

[0078] The method for controlling the boiler operation state by the control module of the present invention adopts a step-by-step progressive process to achieve gradient energy saving, and adopts a delayed start energy saving method to improve the temperature accuracy of the energy-saving control system.

[0079] The control module of the present invention controls the operation state of the boiler using the first control method and the second control method, thereby ensuring the normal operation of the boiler and improving the intelligence level of the boiler. The present invention has the ability to adjust the set temperature in real time and can perform automatic control according to the external environment and user needs. At the same time, the present invention uses the boiler outlet water temperature formula to improve the system temperature control accuracy and control efficiency, thereby achieving a significant reduction in energy consumption and accurate and stable control of indoor temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Figure 1 It is a flow chart of the control module of the present invention controlling the operation status of the boiler. DETAILED DESCRIPTION

[0081] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0082] See also Figure 1 , the present invention provides a technical solution:

[0083] An energy-saving control system for a gas boiler based on the Internet of Things includes:

[0084] Data acquisition module, used to collect system power consumption, boiler outlet water temperature, boiler return water temperature, indoor temperature and humidity, outdoor temperature and humidity;

[0085] The data communication and processing module is responsible for data transmission and communication protocol processing, and analyzes the received data;

[0086] Early warning module, real-time monitoring of data collection information and fault warning;

[0087] The command sending module of the central control server sends the analyzed data to the central control server. The central control server generates accurate temperature control instructions based on the analysis results and sends them to the gas boiler host.

[0088] The control module receives instructions from the central control server and controls the operation of the boiler;

[0089] User interaction and configuration module, providing the user interface.

[0090] Among them, the method for the control module to control the operation of the boiler includes a first control method and a second control method. Under normal circumstances, the control module controls the boiler to operate the first control method, but when the early warning module detects that the data collection is abnormal, the alarm mode is activated, and the control module controls the boiler to operate and start the second control method. When the early warning module detects that the data collection returns to normal, the control module controls the boiler to operate and resumes the first control method.

[0091] Among them, the first control method collects data through the data acquisition module and uses the boiler outlet water temperature calculation formula:

[0092] This formula is used to calculate the boiler outlet water temperature, and the step temperature control method and extended temperature control method are used to control the operation of the boiler.

[0093] in:

[0094] Tblr,out,set is the boiler outlet water setting temperature;

[0095] Tblr,out,max is the maximum outlet water temperature of the boiler;

[0096] Tblr,out,min is the minimum outlet water temperature of the boiler;

[0097] Qmax is the maximum heating capacity of the system;

[0098] Qmin is the minimum heating capacity of the system;

[0099] Qf is the actual load heating capacity;

[0100] K is the additional coefficient of building energy consumption.

[0101] In addition, the calculation formula of Qf is Qf=(Hn-Hf) / (Hn-Hs)×Qmax

[0102] in:

[0103] Hn is the indoor enthalpy;

[0104] Hf is the current outdoor enthalpy value;

[0105] Hs is the standard enthalpy value under outdoor design conditions; the enthalpy value is determined by the enthalpy-humidity diagram based on temperature and humidity.

[0106] Qmax is the maximum heating capacity.

[0107] and,

[0108] The calculation formula of K is:

[0109] K=(0.6+Bsa / Bv)×sic×(1-olc)×k4×k5

[0110] in:

[0111] scb is the building shape correction factor;

[0112] Bsa is the building surface area;

[0113] Bv is the building volume;

[0114] olc is the building orientation and lighting correction factor;

[0115] k4 is the correction factor for the use of the building, ranging from 0.8 to 1.2;

[0116] k5 is the wind correction factor at the location of the building;

[0117] sic is the correction coefficient of building insulation material, sic=∑(sic1+sic2+...+sicn) / n, where n=1,2,3...

[0118] The first control method includes:

[0119] When the indoor temperature is not lower than the indoor upper limit setting temperature, 1 Then start the first energy-saving mode, and when the indoor temperature is not higher than the indoor upper limit setting temperature, turn off the energy-saving mode;

[0120] After the first energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature and lasts for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, 2 Then start the second energy-saving mode. If the indoor temperature is higher than the indoor upper limit setting temperature, the indoor temperature is higher than the indoor upper limit setting temperature for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, the energy-saving mode is turned off.

[0121] After the second energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature and lasts for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, 3Then the third energy-saving mode is started. When the indoor temperature is higher than the indoor upper limit setting temperature, the indoor temperature is higher than the indoor upper limit setting temperature for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, the first energy-saving mode is started;

[0122] After the third energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature, the third energy-saving mode is maintained, otherwise the second energy-saving mode is activated.

[0123] Among them, the calculation formulas of t1, t2, and t3 are:

[0124] t n =△t*k*(Tblr,out,tim2-Tblr,out,tim1) / (T,tim2-T,tim1)

[0125] in:

[0126] △t: tim2 and tim 1 The difference, accurate to min;

[0127] k: time interval correction factor;

[0128] Tblr,out,tim 1 : boiler outlet water temperature at tim1;

[0129] Tblr,out,tim 2 : boiler outlet water temperature at tim2;

[0130] T,tim 1 : Indoor temperature at tim1;

[0131] T,tim 2 : Indoor temperature at tim2;

[0132] n=1,2,3......。

[0133] Among them, the boiler outlet water temperature ranges of the first energy-saving mode, the second energy-saving mode and the third energy-saving mode are different. The boiler outlet water temperature range of the first energy-saving mode is higher than that of the second energy-saving mode, and the boiler outlet water temperature range of the second energy-saving mode is higher than that of the third energy-saving mode.

[0134] The second control method includes:

[0135] Collect weather forecast data and information to generate corresponding weather temperature and humidity curves;

[0136] Based on past experience data, the temperature, power and time of boiler outlet water are obtained using the weather temperature and humidity curve.

[0137] Although embodiments of the present invention have been shown and described (see the above detailed description for details), it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0138] In the description of the present application, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

Claims

1. An energy-saving control system for a gas boiler based on the Internet of Things, characterized in that: include Data acquisition module, used to collect system power consumption, boiler outlet water temperature, boiler return water temperature, indoor temperature and humidity, outdoor temperature and humidity; The data communication and processing module is responsible for data transmission and communication protocol processing, and analyzes the received data; Early warning module, real-time monitoring of data collection information and fault warning; The command sending module of the central control server sends the analyzed data to the central control server. The central control server generates accurate temperature control instructions based on the analysis results and sends them to the gas boiler host. The control module receives instructions from the central control server and controls the operation of the boiler; User interaction and configuration module, providing the user interface.

2. According to the energy-saving control system of a gas boiler based on the Internet of Things according to claim 1, it is characterized in that: The method for the control module to control the operation of the boiler includes a first control method, and the first control method includes: When the indoor temperature is not lower than the indoor upper limit setting temperature, the first energy-saving mode is started after the interval t1, and when the indoor temperature is not higher than the indoor upper limit setting temperature, the energy-saving mode is turned off; After the first energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature and lasts for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, the second energy-saving mode is activated after an interval t2. When the indoor temperature is higher than the indoor upper limit setting temperature, the indoor temperature is higher than the indoor upper limit setting temperature for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, the energy-saving mode is turned off; After the second energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature and lasts for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature, the third energy-saving mode is activated after the interval t3. When the indoor temperature is higher than the indoor upper limit setting temperature, the indoor temperature is higher than the indoor upper limit setting temperature for more than 30 seconds, and the boiler outlet water temperature is higher than the boiler return water temperature cannot be satisfied at the same time, the first energy-saving mode is activated; After the third energy-saving mode is activated, when the indoor temperature is not lower than the indoor upper limit setting temperature, the third energy-saving mode is maintained, otherwise the second energy-saving mode is activated.

3. According to the energy-saving control system of a gas boiler based on the Internet of Things according to claim 2, it is characterized in that: The calculation formulas of t1, t2 and t3 are: t n =△t*k*(Tblr,out,tim2-Tblr,out,tim1) / (Tn,tim2-Tn,tim1) in: △t: the difference between tim2 and tim1, accurate to min; k: time interval correction factor; Tblr,out,tim1: boiler outlet water temperature at tim1; Tblr,out,tim2: boiler outlet water temperature at tim2; T,tim1: indoor temperature at tim1; T,tim2: indoor temperature at tim2; n＝1,2,3......。 4. According to the energy-saving control system of a gas boiler based on the Internet of Things as claimed in claim 2, it is characterized in that: The boiler outlet water temperature ranges of the first energy-saving mode, the second energy-saving mode and the third energy-saving mode are different. The boiler outlet water temperature range of the first energy-saving mode is higher than the boiler outlet water temperature range of the second energy-saving mode, and the boiler outlet water temperature range of the second energy-saving mode is higher than the boiler outlet water temperature range of the third energy-saving mode.

5. According to the energy-saving control system of a gas boiler based on the Internet of Things according to claim 4, it is characterized in that: The boiler outlet water temperature calculation formula is: in Tblr,out,set is the boiler outlet water setting temperature; Tblr,out,max is the maximum outlet water temperature of the boiler; Tblr,out,min is the minimum outlet water temperature of the boiler; Qmax is the maximum heating capacity of the system; Qmin is the minimum heating capacity of the system; Qf is the actual load heating capacity; K is the additional coefficient of building energy consumption.

6. According to the energy-saving control system of a gas boiler based on the Internet of Things according to claim 5, it is characterized in that: The calculation formula of Qf is Qf = Hn-Hf / (Hn-Hs)×Qmax in: Hn is the indoor enthalpy; Hf is the current outdoor enthalpy value; Hs is the standard enthalpy; Qmax is the maximum heating capacity.

7. The energy-saving control system of a gas boiler based on the Internet of Things according to claim 5 is characterized in that: The calculation formula of K is: K=(0.6+Bsa / Bv)×sic×(1-olc)×k4×k5 in: scb is the building shape correction factor; Bsa is the building surface area; Bv is the building volume; olc is the building orientation and lighting correction factor; k4 is the correction factor for the use of the building, ranging from 0.8 to 1.2; k5 is the wind correction factor at the location of the building; sic is the correction coefficient of building insulation material, sic=∑(sic1+sic2+...+sicn) / n, where n=1,2,3...

8. An energy-saving control system for a gas boiler based on the Internet of Things according to any one of claims 5 or 6, characterized in that: The enthalpy value is determined from a psychrometric diagram.

9. According to the energy-saving control system of a gas boiler based on the Internet of Things as claimed in claim 2, it is characterized in that: The method for controlling the operation of the boiler by the control module further includes a second control method, wherein the second control method includes: Collect weather forecast data and information to generate corresponding weather temperature and humidity curves; Based on past experience data, the temperature, power and time of boiler outlet water are obtained using the weather temperature and humidity curve.

10. The energy-saving control system for a gas boiler based on the Internet of Things according to claim 9, characterized in that: When the early warning module detects that data collection is abnormal, the alarm mode is activated, and the control module controls the boiler to operate and start the second control method. When the early warning module detects that data collection returns to normal, the control module controls the boiler to operate the first control method.

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