An air conditioning regulation method based on air quality and window opener opening degree

Abstract

This invention relates to the field of air conditioning control technology, and more particularly to an air conditioning control method based on air quality and window opener opening degree. The method includes detecting outdoor and indoor air quality; when both outdoor and indoor air quality meet preset conditions, and the difference between the indoor ambient temperature and the set temperature reaches a preset temperature, activating the automatic air conditioning control mode; adjusting the air conditioning frequency; increasing the window opener opening degree as air quality deteriorates; and increasing the indoor fan speed as air quality deteriorates. This air conditioning control method based on air quality and window opener opening degree has the advantages of avoiding the influence of outdoor air on indoor air quality, effectively improving indoor air quality, saving a significant amount of energy, ensuring the cooling and heating effects of the air conditioner, and improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of air conditioning control technology, and in particular to an air conditioning control method based on air quality and window opener opening degree. Background Technology

[0002] Air conditioning has become an essential appliance in people's daily lives and work, creating a comfortable environment through its temperature regulation. Especially in recent years, the market has seen the emergence of air-conditioning systems with fresh air intakes. These systems have gained popularity and captured a significant share of the market because they address the issue of declining indoor air quality and negatively impacting customer experience caused by prolonged air conditioning use. However, older, conventional air conditioners are still in use. These users often close doors and windows to achieve better cooling / heating effects. However, if this is done for extended periods, indoor air circulation is impaired, air quality deteriorates, and discomfort ensues. Conversely, opening doors and windows may prevent the cooling / heating from reaching the desired effect, causing both discomfort and wasted energy.

[0003] Currently, many users of older air conditioners solve the problem by periodically turning off the air conditioner and opening windows for ventilation. However, this is cumbersome. Therefore, many manufacturers now combine air conditioners and windows with motorized windows for control. Chinese invention patent CN115095965A discloses a window control method, device, system, and air conditioner based on air conditioning. The method includes: acquiring the indoor target gas concentration; determining the travel distance of a window opener based on the target gas concentration; and controlling the travel distance of the window opener to control the corresponding opening degree of the window. By acquiring the indoor target gas concentration and determining the travel distance of the window opener based on the target gas concentration, and then controlling the travel distance of the window opener to control the corresponding opening degree of the window, the patent achieves control over the window opening amount based on indoor air conditions. However, this patent also considers the issue of indoor air quality. When the window is opened, outdoor air enters the room, which greatly affects indoor air quality. Therefore, opening the window not only fails to improve indoor air quality but may even introduce high concentrations of outdoor pollutants such as carbon dioxide, carbon monoxide, and PM2.5 into the room. In addition, this method does not take into account the influence of indoor fan speed and compressor frequency on air quality regulation, and therefore cannot effectively regulate indoor air quality. Summary of the Invention

[0004] In view of this, the present invention aims to provide an air conditioning regulation method based on air quality and window opening degree. It adopts the method of adjusting the window opening degree, indoor fan speed and compressor frequency according to the difference between indoor and outdoor air quality, which solves the problem of the influence of outdoor air on indoor air quality. However, adjusting only the window opening degree ignores the influence between the fan speed and compressor frequency and the window opening degree, which cannot effectively regulate indoor air quality, consume a lot of electrical energy, reduce the cooling and heating effect of air conditioning, and affect the user experience.

[0005] To address the above problems, this invention provides an air conditioning adjustment method based on air quality and window opener degree, comprising:

[0006] The system detects outdoor and indoor air quality. When both outdoor and indoor air quality meet preset conditions, and the difference between the indoor ambient temperature and the set temperature reaches the preset temperature, the air conditioner automatically adjusts.

[0007] Adjust the air conditioner frequency F according to formula (1);

[0008] F=F1×A×B×C+F3…………(1)

[0009] in,

[0010] F1: Maximum air conditioning frequency;

[0011] F3: Frequency correction value;

[0012] A: Outdoor ambient temperature T o The correction factor has a value range of 0 to 1.

[0013] B: Window opener opening correction coefficient, with a value range of 0.2 to 1;

[0014] C: Indoor unit fan speed correction factor;

[0015] As air quality deteriorates, the opening of the window opener will be increased;

[0016] As air quality deteriorates, increase the airflow speed of indoor fans.

[0017] Furthermore, the conditions that must be met simultaneously to activate the air conditioner's automatic adjustment mode include:

[0018] (1) Calculate the air quality index, detect outdoor air quality and indoor air quality, including at least: oxygen concentration, carbon dioxide concentration, carbon monoxide concentration and PM2.5 concentration, calculate indoor air quality index x1 and outdoor air quality index x2 based on the detected values, and calculate the difference in air quality index x0 = x1 - x2 ≥ 0.

[0019] (2) Carbon dioxide concentration m ≥ 800 ppm;

[0020] (3) Indoor ambient temperature T i With the set temperature T s The difference between them reaches the preset temperature, including:

[0021] In cooling mode, T i -T s ≤0.5℃;

[0022] In heating mode, T s -T i ≤0.5℃.

[0023] Furthermore, the methods for determining the value of A include:

[0024] In cooling mode:

[0025] When T o –T s At ≥5℃, A=1;

[0026] When T o –T s At ≥2℃, A=0.8;

[0027] When T o –T s At ≥0℃, A=0.5;

[0028] When T o –T s At <0℃, A = 0;

[0029] In heating mode:

[0030] When T s –T o At ≥5℃, A=1;

[0031] When T s –T o At ≥2℃, A=0.8;

[0032] When T s –T o At ≥0℃, A=0.5;

[0033] When T s –T o At <0℃, A = 0.

[0034] Furthermore, the methods for determining the value of F3 include:

[0035] In cooling mode:

[0036] (1) T i –T s ≥ 1.5℃ F3= F3+5Hz;

[0037] (2) T i –T s ≥ 1℃ F3= F3+ 2Hz;

[0038] (3) T i –T s ≥0.5℃ F3= F3+ 1Hz;

[0039] (4) -0.5℃ < T i –T s Maintain F3 value at <0.5℃;

[0040] (5) T i –T s ≤-0.5℃ F3= F3-1Hz;

[0041] (6) T i –T s ≤-1℃ F3= F3- 2Hz;

[0042] (7) T i –T s ≤-1.5℃ F3= F3- 5Hz;

[0043] In heating mode:

[0044] (1) T s –T i ≥ 1.5℃ F3= F3+5Hz;

[0045] (2) T s –T i ≥ 1℃ F3= F3+ 2Hz;

[0046] (3) T s –T i ≥0.5℃ F3= F3+ 1Hz;

[0047] (4) -0.5℃ < T s –T i Maintain F3 value at <0.5℃;

[0048] (5) T s –T i ≤-0.5℃ F3= F3-1Hz;

[0049] (6) T s –T i ≤-1℃ F3= F3- 2Hz;

[0050] (7) T s –T i≤-1.5℃ F3= F3- 5Hz.

[0051] Furthermore, the methods for determining the value of B include:

[0052] (1) When m≤a1: Window opening y=b0, B=0.2;

[0053] (2) When a1 < m ≤ a2: the opening degree of the window opener is y = b1, B = 0.5;

[0054] (3) When a2 < m ≤ a3: the opening degree of the window opener is y = b2, B = 0.8;

[0055] (4) When m > a3: the opening degree of the window opener is y = b3, B = 1;

[0056] in,

[0057] a1, a2, and a3 represent the first, second, and third concentration values, respectively.

[0058] b0, b1, b2, and b3 are the first, second, third, and fourth opening values, respectively.

[0059] Furthermore, a1 is 600 ppm, a2 is 600–1000 ppm, a3 is 1000–1400 ppm; b0 is 3–8%, b1 is 8–13%, b2 is 13–20%, and b3 is 20–30%.

[0060] Furthermore, methods for determining the fan speed include:

[0061] (1) When m≤a1: the indoor fan damper is controlled normally, C is 0.65~0.75;

[0062] (2) When a1<m≤a2: the indoor fan speed is 1, and C is 0.75~0.9;

[0063] (3) When a2<m≤a3: the indoor fan speed is 2, and C is 0.9~1.1;

[0064] (4) When m > a3: the indoor fan speed is 3 and C is 1.1 to 1.3.

[0065] Furthermore, the air conditioner will deactivate automatic control when at least one of the following conditions is met:

[0066] (1) When m≤a1, and lasts for 5min;

[0067] (2) When m≤a2, and the duration is 10min;

[0068] (3) Run in one mode for 20 minutes;

[0069] (4) When x0 ≤ -10;

[0070] (5) In cooling mode: T i –T s ≥2℃ or T i -T s ≤-2℃;

[0071] In heating mode: T s -T i ≥2℃ or T s -T i ≤-2℃.

[0072] Furthermore, the air conditioner includes an outdoor air quality sensor and an outdoor ambient temperature sensor installed in the outdoor unit, and an indoor air quality sensor and an indoor ambient temperature sensor installed in the indoor unit.

[0073] Furthermore, the air conditioner also includes:

[0074] The processor receives outdoor air quality information from the outdoor air quality sensor, outdoor ambient temperature information from the outdoor ambient temperature sensor, indoor air quality information from the indoor air quality sensor, and indoor ambient temperature information from the indoor ambient temperature sensor.

[0075] The processor obtains the outdoor air quality index x2 and the indoor air quality index x1 based on the outdoor air quality information and the indoor air quality information using the air quality index calculation formula.

[0076] The processor calculates the difference between the indoor ambient temperature and the set temperature.

[0077] Compared with existing technologies, the air conditioning regulation method based on air quality and window opener opening degree described in this invention has the following advantages:

[0078] The advantage of this technical solution lies in adjusting the window opening degree, indoor fan speed, and compressor frequency based on the difference between indoor and outdoor air quality, thereby avoiding the influence of outdoor air on indoor air quality. By adjusting the window opening degree in conjunction with adjusting the fan speed and compressor frequency, indoor air quality is effectively improved, a significant amount of energy is saved, the cooling and heating effects of the air conditioner are guaranteed, and the user experience is improved. Attached Figure Description

[0079] Figure 1 This is a flowchart illustrating an air conditioning adjustment method based on air quality and window opener degree, as described in an embodiment of the present invention. Detailed Implementation

[0080] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0081] In this invention, the terms "first," "second," "upper," and "lower," etc., are used for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "upper," or "lower" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. Where the technical solutions of the embodiments can be combined, they are all within the scope of protection claimed by this invention.

[0082] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0083] like Figure 1 As shown, an air conditioning control method based on air quality and window opener opening degree includes:

[0084] The system monitors outdoor and indoor air quality. When both outdoor and indoor air quality meet preset conditions, and the difference between the indoor ambient temperature and the set temperature reaches the preset temperature, the air conditioner's automatic adjustment mode is activated. The conditions that must be met simultaneously to activate the automatic adjustment mode include:

[0085] (1) Calculate the air quality index. The air conditioner includes an outdoor air quality sensor and an outdoor ambient temperature sensor installed on the outdoor unit, and an indoor air quality sensor and an indoor ambient temperature sensor installed on the indoor unit. Outdoor air quality information and indoor air quality information are detected by the outdoor and indoor air quality sensors, respectively. The air quality includes at least: oxygen concentration, carbon dioxide concentration, carbon monoxide concentration, and PM2.5 concentration. The processor receives the outdoor air quality information sent by the outdoor air quality sensor and the indoor air quality information sent by the indoor air quality sensor. Based on the detected values, the indoor air quality index x1 and the outdoor air quality index x2 are obtained using the air quality index calculation formula. The difference in air quality indices x0 = x1 - x2 ≥ 0 is calculated. When this condition is met, the outdoor air quality is better than the indoor air quality.

[0086] (2) Carbon dioxide concentration m≥800ppm, indoor carbon dioxide concentration exceeding a certain value will affect user comfort;

[0087] (3) The processor receives outdoor ambient temperature information from the outdoor ambient temperature sensor and indoor ambient temperature information from the indoor ambient temperature sensor. It then calculates the indoor ambient temperature T. i With the set temperature T sThe difference between them reaches the preset temperature, including:

[0088] In cooling mode, T i -T s ≤0.5℃;

[0089] In heating mode, T s -T i ≤0.5℃.

[0090] This control system does not detect temperature-reaching shutdowns, which facilitates dynamic control of the compressor frequency. After the compressor stops, it must remain idle for a full 1 minute before restarting.

[0091] Adjust the air conditioner frequency F according to formula (1);

[0092] F=F1×A×B×C+F3…………(1)

[0093] Wherein, F1: Upper limit of air conditioner frequency, the upper limit of air conditioner frequency F1 is 70-90Hz. Preferably, the upper limit of air conditioner frequency is 80Hz, and the lower limit of air conditioner frequency F2 is 20Hz. F3 is the frequency correction value, and its default value is 0. A: Outdoor ambient temperature T o Correction factor, ranging from 0 to 1. B: Window opener opening correction factor, ranging from 0.2 to 1. C: Indoor unit fan damper correction factor.

[0094] The methods for determining the value of A include:

[0095] In cooling mode:

[0096] When T o –T s At ≥5℃, A=1;

[0097] When T o –T s At ≥2℃, A=0.8;

[0098] When T o –T s At ≥0℃, A=0.5;

[0099] When T o –T s At <0℃, A = 0;

[0100] How to determine the value of F3:

[0101] (1)T i –T s ≥1.5℃ F3=F3+5Hz;

[0102] (2)T i –T s ≥1℃ F3=F3+2Hz;

[0103] (3)T i –T s ≥0.5℃ F3=F3+1Hz;

[0104] (4) -0.5℃ < T i –T s Maintain F3 value at <0.5℃;

[0105] (5)T i –T s ≤-0.5℃ F3=F3-1Hz;

[0106] (6)T i –T s ≤-1℃ F3=F3-2Hz;

[0107] (7)T i –T s ≤-1.5℃ F3=F3-5Hz.

[0108] In heating mode:

[0109] When T s –T o At ≥5℃, A=1;

[0110] When T s –T o At ≥2℃, A=0.8;

[0111] When T s –T o At ≥0℃, A=0.5;

[0112] When T s –T o At <0℃, A = 0.

[0113] How to determine the value of F3:

[0114] (1)T s –T i ≥1.5℃ F3=F3+5Hz;

[0115] (2)T s –T i ≥1℃ F3=F3+2Hz;

[0116] (3)T s –T i ≥0.5℃ F3=F3+1Hz;

[0117] (4) -0.5℃ < T s –T i Maintain F3 value at <0.5℃;

[0118] (5)T s –T i ≤-0.5℃ F3=F3-1Hz;

[0119] (6)T s –T i ≤-1℃ F3=F3-2Hz;

[0120] (7)T s –T i ≤-1.5℃ F3=F3-5Hz.

[0121] As air quality deteriorates, increase the opening of the window opener.

[0122] Methods for determining the value of B include:

[0123] (1) When m≤a1: Window opening y=b0, B=0.2;

[0124] (2) When a1 < m ≤ a2: the opening degree of the window opener is y = b1, B = 0.5;

[0125] (3) When a2 < m ≤ a3: the opening degree of the window opener is y = b2, B = 0.8;

[0126] (4) When m > a3: the opening degree of the window opener is y = b3, B = 1;

[0127] in,

[0128] a1, a2, and a3 are the first, second, and third concentration values, respectively. a1 is 600 ppm, a2 is 600–1000 ppm, and a3 is 1000–1400 ppm. Preferably, a1 = 500 ppm, a2 = 800 ppm, and a3 = 1200 ppm.

[0129] b0, b1, b2, and b3 are the first, second, third, and fourth opening values, respectively. b0 is 3–8%, preferably 5%; b1 is 8–13%, preferably 10%; b2 is 13–20%, preferably 15%; and b3 is 20–30%, preferably 25%.

[0130] As air quality deteriorates, the airflow speed of indoor fans should be increased. Methods for determining fan speed include:

[0131] (1) When m≤a1: the indoor fan damper is normally controlled, C is 0.65~0.75, and the preferred value is 0.7;

[0132] (2) When a1<m≤a2: the indoor fan speed is 1, C is 0.75~0.9, and the preferred value is 0.8;

[0133] (3) When a2<m≤a3: the indoor fan speed is 2, C is 0.9~1.1, and the preferred value is 1;

[0134] (4) When m>a3: the indoor fan speed is 3, C is 1.1~1.3, and the preferred value is 1.2.

[0135] Furthermore, the air conditioner will deactivate automatic control when at least one of the following conditions is met:

[0136] (1) When m≤a1, and lasts for 5min;

[0137] (2) When m≤a2, and the duration is 10min;

[0138] (3) This mode is operated for 20 minutes to avoid energy waste caused by prolonged operation;

[0139] (4) When x0 ≤ -10;

[0140] (5) In cooling mode: T i –T s ≥2℃ or T i -T s ≤-2℃;

[0141] In heating mode: T s -T i ≥2℃ or T s -T i ≤-2℃.

[0142] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An air conditioning regulation method based on air quality and opening degree of an opener, characterized by, The method comprises the following steps: Detecting outdoor and indoor air quality, and starting the automatic air conditioner adjustment mode when the outdoor and indoor air quality reaches the preset condition, and the difference between the indoor environment temperature and the set temperature reaches the preset temperature; Adjusting the air conditioner frequency F according to formula (1); F=F1×A×B×C+F3 …… (1) Wherein, F1: upper limit of air conditioner frequency; F3: correction value of frequency; A: outdoor ambient temperature T o correction coefficient, with a value ranging from 0 to 1; B: opening degree correction coefficient of window opener, the value range is 0.2-1; C: indoor unit air volume correction coefficient; Increasing the opening degree of the window opener with the deterioration of air quality; Increasing the air volume of the indoor air fan with the deterioration of air quality; The value taking method of A comprises the following steps: In the cooling mode: When T o - T s ≥ 5°C, A = 1; When T o - T s ≥ 2°C, A = 0.8; When T o - T s = 0°C, A = 0.5; When T o - T s A = 0 at <0°C T o : outdoor ambient temperature; T s : set temperature; In the heating mode: When T s - T o ≥ 5°C, A = 1; When T s - T o ≥ 2°C, A = 0.8; When T s - T o = 0.5 when T ≥ 0°C; When T s - T o A = 0 at <0°C.

2. The air quality and opener position based air conditioning regulation method according to claim 1, wherein, The conditions that need to be met simultaneously to start the automatic air conditioner adjustment mode comprise the following steps: (1) calculating air index, detecting outdoor and indoor air quality, at least including oxygen concentration, carbon dioxide concentration, carbon monoxide concentration and PM2.5 concentration, calculating indoor air quality index x1 and outdoor air quality index x2 according to the detected values, calculating the difference x0=x1-x2 of the air quality index, x0≥0; (2) carbon dioxide concentration m≥800ppm; (3) the indoor environment temperature T i the difference between the set temperature T s reaches a preset temperature, comprising: In the cooling mode, T i -T s ≤ 0.5°C; In heating mode, T s -T i ≤ 0.5°C.

3. The air quality and opener position based air conditioning regulation method according to claim 2, wherein, The value taking method of F3 comprises the following steps: In the cooling mode: (1) T i - T s ≥ 1.5 °C F3= F3+ 5 Hz; (2) T i - T s ≥ 1 °C F3 = F3 + 2 Hz; (3) T i - T s ≥ 0.5°C F3 = F3 + 1 Hz; (4) -0.5°C < T i - T s <0.5°C hold F3 value; (5) T i - T s ≤ -0.5 °C F3= F3-1 Hz; (6) T i - T s ≤ -1 °C F3= F3- 2 Hz; (7) T i - T s ≤ -1.5 °C F3= F3-5 Hz; In the heating mode: (1) T s - T i ≥ 1.5 °C F3= F3+ 5 Hz; (2) T s - T i ≥ 1 °C F3 = F3 + 2 Hz; (3) T s - T i ≥ 0.5°C F3 = F3 + 1 Hz; (4) -0.5°C < T s - T i <0.5°C holds F3 value; (5) T s - T i ≤ -0.5 °C F3= F3-1 Hz; (6) T s - T i ≤ -1 °C F3= F3- 2 Hz; (7) T s - T i ≤ -1.5 °C F3= F3-5 Hz.

4. The air quality and opener position based air conditioning regulation method according to claim 2, wherein, The value taking method of B comprises the following steps: (1) when m≤a1: the opening degree y of the window opener is b0, and B=0.2; (2) when a1 (3) when a2 (4) when m>a3: the opening degree y of the window opener is b3, and B=1; Wherein, a1, a2 and a3 are respectively the first, second and third concentration values; b0, b1, b2 and b3 are respectively the first, second, third and fourth opening degree values.

5. The air conditioner adjustment method based on air quality and window opener opening degree according to claim 4, wherein a1 is 600ppm, a2 is 600-1000ppm, and a3 is 1000-1400ppm; b0 is 3-8%, b1 is 8-13%, b2 is 13-20%, and b3 is 20-30%. The method for determining the air volume of the air fan comprises the following steps: (1) when m≤a1: the indoor air fan air volume is controlled normally, and C is 0.65-0.75; 6. The air quality and opener position based air conditioning regulation method according to claim 4, wherein, (2) when a1 (3) when a2 (4) when m>a3: the indoor air fan air volume is 3, and C is 1.1-1.

3.

7. The air conditioner adjustment method based on air quality and window opener opening degree according to any one of claims 1-6, wherein the automatic adjustment is exited when the air conditioner meets at least one of the following conditions: (1) when m≤a1 and lasts for 5min; (2) when m≤a2 and lasts for 10min; (3) running in one mode for 20min; (4) when x0≤-10; 8. The air conditioner adjustment method based on air quality and window opener opening degree according to claim 7, wherein ​ ​ (5) in the cooling mode: T i - T s ≥ 2°C or T i - T s ≤ -2°C; In heating mode: T s - T i ≥ 2°C or T s - T i ≤ -2°C. ​ The air conditioner comprises an outdoor air mass sensor and an outdoor ambient temperature sensor arranged on an outdoor unit, and an indoor air mass sensor and an indoor ambient temperature sensor arranged on an indoor unit.

9. The air quality and opener position based air conditioning regulation method according to claim 8, wherein, The air conditioner further comprises: a processor receiving outdoor air mass information sent by the outdoor air mass sensor, outdoor ambient temperature information sent by the outdoor ambient temperature sensor, indoor air mass information sent by the indoor air mass sensor, and indoor ambient temperature information sent by the indoor ambient temperature sensor; the processor obtains an outdoor air mass index x2 and an indoor air mass index x1 through an air mass index calculation formula according to the outdoor air mass information and the indoor air mass information; the processor calculates a difference between the indoor ambient temperature and the set temperature.

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