Control method of air conditioner and air conditioner

Abstract

The present application relates to air conditioning technical field, specifically provide a kind of air conditioner control method and air conditioner, to solve the problem that existing technology is filtered by dust screen, self-cleaning treatment to clean air, there is no maximum purification of air problem.For this purpose, the control method of air conditioner of the present application includes: by obtaining indoor PM value, operating parameter in the process of air conditioner operation and coil temperature, calculate the calculated temperature of coil according to operating parameter, compare indoor PM value and compare the calculated temperature of coil with the obtained coil temperature value to obtain temperature comparison threshold M, according to PM value comparison result or according to PM value comparison result and temperature comparison threshold M, selectively adjust the air conditioner.In the case of using the above technical scheme, it is judged whether the performance of air conditioner is affected by PM, when it is judged that the performance of air conditioner is affected by PM, the air inlet grid control air inlet volume is adjusted, so that maximum purification of air can be achieved.

Description

Technical Field

[0001] This invention relates to air conditioning, specifically providing a control method for an air conditioner and an air conditioner. Background Technology

[0002] An air conditioner, or room air conditioner, regulates parameters such as temperature, humidity, cleanliness, and airflow in a room (or enclosed space or area) to meet the requirements of human comfort or industrial processes.

[0003] Air conditioning is now widely available and has become a necessity of daily life. With its increasing prevalence, users are becoming more reliant on its selection and use, and a healthy air conditioner can significantly improve user satisfaction.

[0004] However, during air conditioner use, due to varying locations and environments, particulate matter (PM) may be present in the air. This particulate matter can affect user health. For example, scientists use PM2.5 to represent the concentration of dust or particulate matter with a diameter of 2.5 μm or less per cubic meter of air. A higher PM2.5 value indicates more severe air pollution and greater harm to human health. Traditional methods of air purification, such as filtering with dust filters and self-cleaning processes, cannot achieve maximum air purification. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that the existing technology of cleaning air by filtering dust with a filter screen and self-cleaning treatment cannot maximize the purification of air.

[0006] In a first aspect, the present invention provides a method for controlling an air conditioner, the method comprising the following steps:

[0007] Obtain the air conditioner's start-up command and operating instructions;

[0008] Obtain the current indoor PM value, the operating parameters of the air conditioner during operation, and the current coil temperature;

[0009] The calculated temperature δT of the coil is calculated based on the operating parameters.

[0010] The current indoor PM value is compared to obtain the PM value comparison result; the calculated temperature of the coil is compared with the current coil temperature to obtain the temperature comparison threshold M; and

[0011] The air conditioner is selectively adjusted based on the PM value comparison result or based on the PM value comparison result and the temperature comparison threshold M.

[0012] In the preferred technical solution of the above air conditioner control method, the step of "calculating the calculated temperature δT of the coil according to the operating parameters" specifically includes:

[0013] Calculating the calculated temperature δT of the coil according to the operating parameters and in combination with the change value N of the coil temperature corresponding to each degree change of the indoor temperature obtained when the air conditioner is first operated.

[0014] In the preferred technical solution of the above air conditioner control method, the "change value N of the coil temperature corresponding to each degree change of the indoor temperature obtained when the air conditioner is first operated" is calculated according to the following formula:

[0015] N = 丨T - t丨 / 丨t1 - t丨, where

[0016] T is the temperature of the coil when the air conditioner is first turned on,

[0017] t is the indoor temperature when the air conditioner is first turned on,

[0018] t1 is the temperature required by the first operation instruction of the air conditioner.

[0019] In the preferred technical solution of the above air conditioner control method, the operating parameters during the operation of the air conditioner include t2 and t3, where

[0020] t2 is the indoor temperature when the air conditioner is turned on again,

[0021] t3 is the temperature required by the second operation instruction of the air conditioner.

[0022] In the preferred technical solution of the above air conditioner control method, "calculating the calculated temperature δT of the coil according to the operating parameters" is calculated according to the following formula:

[0023] δT = 丨T - t丨 * 丨t2 - t3丨 / 丨t1 - t丨.

[0024] In the preferred technical solution of the above air conditioner control method, the step of "comparing the current indoor PM value" specifically includes: comparing the first indoor PM value PM1 when the air conditioner is first turned on with the second indoor PM value PM2 when the air conditioner is turned on again.

[0025] In the preferred technical solution of the above air conditioner control method, the step of "selectively adjusting the air conditioner according to the PM value comparison result or according to the PM value comparison result and the temperature comparison threshold M" specifically includes: [[ID= forty-one]]

[0026] When PM2 < PM1, controlling the coil temperature of the air conditioner according to the calculated temperature δT of the coil;

[0027] When PM2 > PM1, the calculated temperature δT of the coil is compared with the current coil temperature T1 to obtain the temperature comparison threshold M, and then the air conditioner is selectively controlled according to the temperature comparison threshold M.

[0028] In the preferred embodiment of the above-mentioned air conditioner control method, the step of "selectively controlling the air conditioner according to the temperature comparison threshold M" specifically includes:

[0029] If the air conditioner is in cooling mode, T1 < δT, and δT - T1 ≥ M, then the air conditioner will activate its self-cleaning mode, and the fan speed of the indoor unit will be adjusted to the lowest setting, and the fan's air intake grille will be adjusted to the minimum air outlet position, so that the temperature of the coils can return to normal; and / or

[0030] If the air conditioner is in heating mode, T1 > δT, and T1 - δT ≥ M, the air conditioner will activate its self-cleaning mode, and the fan speed of the indoor unit will be adjusted to the lowest setting, and the fan's air intake grille will be adjusted to the minimum air outlet position, so that the temperature of the coil will return to normal.

[0031] In the preferred embodiment of the above-mentioned air conditioning control method, the temperature comparison threshold M is 3-5.

[0032] In a second aspect, the present invention also provides an air conditioner, the air conditioner including a controller configured to perform the control method described above.

[0033] When employing the above technical solution, the air conditioner control method and air conditioner of the present invention acquire indoor PM values, operating parameters during air conditioner operation, and coil temperature; calculate the calculated coil temperature based on the operating parameters; compare the indoor PM values ​​and the calculated coil temperature with the acquired coil temperature values ​​to obtain a temperature comparison threshold M; and selectively adjust the air conditioner based on the PM value comparison result or based on the PM value comparison result and the temperature comparison threshold M. The present invention determines whether the air conditioner's performance is affected by PM; when it is determined that the air conditioner's performance is affected by PM, it adjusts the air intake grille of the air conditioner to control the air intake volume, thereby maximizing air purification. Attached Figure Description

[0034] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0035] Figure 1 This is a schematic flowchart of an air conditioner control method provided in one embodiment of the invention;

[0036] Figure 2 This is a schematic flowchart of the step of "selectively adjusting the air conditioner based on the PM value comparison result or based on the PM value comparison result and the temperature comparison threshold M" provided by an embodiment of the invention;

[0037] Figure 3 This is a schematic flowchart of the step of "selectively controlling the air conditioner according to the temperature comparison threshold M" provided in an embodiment of the invention. Detailed Implementation

[0038] Preferred embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application. For example, although the steps are described in a sequential order in the following embodiments, those skilled in the art will understand that, in order to achieve the effects of this embodiment, different steps need not be executed in such an order; they can be executed simultaneously (in parallel) or in a reverse order, and these simple variations are all within the scope of protection of this application.

[0039] Figure 1 This is a schematic flowchart of an air conditioner control method provided in one embodiment of the invention. Figure 1 As shown, the air conditioner control method provided in this embodiment of the invention includes the following steps:

[0040] S100 obtains the air conditioner's start-up command and operation instructions;

[0041] The S200 acquires the current indoor PM value, the operating parameters of the air conditioner during operation, and the current coil temperature.

[0042] S300 calculates the coil's calculated temperature δT based on operating parameters;

[0043] S400 compares the current indoor PM value and obtains the PM value comparison result, compares the calculated temperature of the coil with the current coil temperature, and obtains the temperature comparison threshold M; and

[0044] The S500 selectively adjusts the air conditioning based on the PM value comparison result or selectively adjusts the air conditioning based on the PM value comparison result and the temperature comparison threshold M.

[0045] The control method in this embodiment is illustrated using the indoor unit of an air conditioner as an example. The coil refers to the coil of the indoor unit of the air conditioner.

[0046] The air conditioning control method of the present invention acquires indoor PM levels, operating parameters during air conditioning operation, and coil temperature. Based on the operating parameters, a calculated coil temperature is calculated. A temperature comparison threshold M is obtained by comparing the indoor PM levels and the calculated coil temperature with the acquired coil temperature. The air conditioner is selectively adjusted based on the PM comparison result or based on both the PM comparison result and the temperature comparison threshold M. When the above technical solution is adopted, it is determined whether the air conditioner's performance is affected by PM. If it is determined that the air conditioner's performance is affected by PM, the air intake grille of the air conditioner is adjusted to control the air intake volume, thereby maximizing air purification.

[0047] In a preferred embodiment of the above-mentioned air conditioner control method, the step of "calculating the calculated temperature δT of the coil based on the operating parameters" specifically includes: calculating the calculated temperature δT of the coil based on the operating parameters and the change value N of the coil temperature corresponding to each degree change in indoor temperature obtained during the first operation of the air conditioner.

[0048] When the air conditioner is turned on for the first time, the current indoor temperature t, the required temperature t1, the coil temperature T, and the current indoor PM value PM1 are read.

[0049] In a preferred embodiment of the above-mentioned air conditioner control method, the step of "comparing the current indoor PM value" specifically includes: comparing the first indoor PM value PM1 when the air conditioner is first turned on with the second indoor PM value PM2 when the air conditioner is turned on again.

[0050] "Compare the calculated temperature of the coil with the current coil temperature" means comparing the calculated temperature δT of the coil with the current coil temperature T1.

[0051] In a preferred embodiment of the above-mentioned air conditioning control method, "the change in coil temperature N corresponding to each degree change in indoor temperature during the initial operation of the air conditioner" is calculated according to the following formula:

[0052] N = |Tt| / |t1-t| (Formula 1), where,

[0053] T represents the temperature of the air conditioner coil when it is first turned on.

[0054] t represents the indoor temperature when the air conditioner is first turned on.

[0055] t1 is the temperature required for the first operation of the air conditioner.

[0056] For example: When an air conditioner is first turned on in summer, in cooling mode, the indoor temperature t is 30℃, the required temperature t1 for the first operation is 25℃, and the coil temperature T is 20℃. According to Formula 1...

[0057] N = |T - t| / |t1 - t| = |20 - 30| / |25 - 30| = 2

[0058] For example, the air conditioner is first turned on in winter, and the air conditioner turns on the heating mode. At this time, the indoor temperature t when the air conditioner is first turned on is 19°C, the required temperature t1 for the first operation instruction of the air conditioner is 25°C, and the temperature T of the coil when the air conditioner is first turned on is 31°C. According to formula 1,

[0059] N = |T - t| / |t1 - t| = |31 - 19| / |25 - 19| = 2

[0060] In the preferred embodiment of the above air conditioner control method, the operating parameters during the operation of the air conditioner include t2 and t3, where,

[0061] t2 is the indoor temperature when the air conditioner is turned on again,

[0062] t3 is the required temperature for the air conditioner's next operation instruction.

[0063] In the preferred embodiment of the above air conditioner control method, the step of "calculating the calculated temperature δT of the coil according to the operating parameters" is to calculate the calculated temperature δT of the coil when the indoor temperature t2 changes to the required temperature t3 for the next operation instruction of the air conditioner after the air conditioner is turned on again, and it is calculated according to the following formula:

[0064] δT = |T - t| * |t2 - t3| / |t1 - t| (Formula 2).

[0065] For example, the air conditioner is turned on for the first and second times in summer, and the air conditioner turns on the cooling mode. The indoor temperature t when the air conditioner is first turned on is 30°C, the required temperature t1 for the first operation instruction of the air conditioner is 25°C, and the temperature T of the coil when the air conditioner is first turned on is 20°C; the indoor temperature t2 when the air conditioner is turned on again is 32°C, and the required temperature t3 for the next operation instruction of the air conditioner is 25°C. According to formula 2,

[0066] δT = |T - t| * |t2 - t3| / |t1 - t| = |20 - 30| * |32 - 25| / |25 - 30| = 14°C.

[0067] For another example, the air conditioner is turned on for the first and second times in winter, and the air conditioner turns on the heating mode. The indoor temperature t when the air conditioner is first turned on is 19°C, the required temperature t1 for the first operation instruction of the air conditioner is 25°C, and the temperature T of the coil when the air conditioner is first turned on is 31°C; the indoor temperature t2 when the air conditioner is turned on again is 18°C, and the required temperature t3 for the next operation instruction of the air conditioner is 25°C. According to formula 2,

[0068] δT = |T - t| * |t2 - t3| / |t1 - t| = |31 - 19| * |18 - 25| / |25 - 19| = 14 °C.

[0069] Figure 2 It is a schematic flowchart of the step of "selectively adjusting the air conditioner according to the PM value comparison result / the PM value comparison result and the temperature comparison threshold M" provided by an embodiment of the invention;

[0070] In a preferred embodiment of the above air conditioner control method, the step of "selectively adjusting the air conditioner according to the PM value comparison result or according to the PM value comparison result and the temperature comparison threshold M" specifically includes:

[0071] S510 When PM2 < PM1, control the coil temperature of the air conditioner according to the calculated temperature δT of the coil.

[0072] For example, the air conditioner is first started and restarted in summer, and the air conditioner is turned on in the cooling mode. The indoor temperature t when the air conditioner is first started is 30 °C, the required temperature t1 for the first operation instruction of the air conditioner is 25 °C, and the temperature T of the coil when the air conditioner is first started is 20 °C; the indoor temperature t2 when the air conditioner is restarted is 32 °C, and the required temperature t3 for the second operation instruction of the air conditioner is 25 °C. According to formula 2, δT = 14 °C. The obtained second indoor PM value PM2 is 10, and the first indoor PM value PM1 is 15. At this time, PM2 < PM1, and the air conditioner is controlled to adjust the coil temperature according to the calculated temperature δT = 14 °C of the coil.

[0073] S520 When PM2 > PM1, compare the calculated temperature δT of the coil with the current coil temperature T1 value to obtain the temperature comparison threshold M, and selectively control the air conditioner according to the temperature comparison threshold M.

[0074] For example, the obtained second indoor PM value PM2 is 20, and the first indoor PM value PM1 is 15. At this time, PM2 > PM1, compare the calculated temperature δT of the coil with the current coil temperature T1 value to obtain the temperature comparison threshold M, and selectively control the air conditioner according to the temperature comparison threshold M.

[0075] In a preferred embodiment of the above air conditioner control method, the temperature comparison threshold M is 3 - 5. M can be 3, 4, or 5. [[ID=​​This is a schematic flowchart illustrating the step of "selectively controlling the air conditioner according to the temperature comparison threshold M" provided in one embodiment of the invention. The inventors discovered that when the indoor PM value is too high, it indicates that the indoor particulate matter is not suitable for the user's health. Moreover, large particulate matter in the air easily adheres to the evaporator fins, and excessive accumulation will lead to a decrease in the performance of the air conditioner. In order to achieve the temperature control effect, the coil temperature will be lowered in the cooling state and raised in the heating state.

[0077] Based on this, in the preferred embodiment of the above-mentioned air conditioning control method, such as Figure 3 As shown, the steps of "when PM2 > PM1, comparing the calculated coil temperature δT with the current coil temperature T1 to obtain the temperature comparison threshold M, and selectively controlling the air conditioner based on the temperature comparison threshold M" specifically include:

[0078] S5201 If the air conditioner is in cooling mode, T1 < δT, and δT - T1 ≥ M, the air conditioner will activate the self-cleaning mode, and the fan speed of the indoor unit will be adjusted to the lowest level, and the fan air intake grille will be adjusted to the minimum air outlet position, so that the temperature of the coil will return to normal.

[0079] For example, if M is 3, and the air conditioner is in cooling mode, after the indoor temperature t2 changes from 32℃ to the required temperature t3 (25℃) when the air conditioner restarts, the current coil temperature T1 is 10℃. The calculated coil temperature δT is 14℃. At this point, T1 < δT, and δT - T1 ≥ M. Then, the air conditioner activates its self-cleaning mode, and the indoor unit's fan speed is reduced to the lowest setting, with the fan's air intake grille adjusted to the minimum airflow position, allowing the coil temperature to return to normal. That is, when the coil temperature returns to normal, |T1 - δT| < M. The air conditioner then maintains its current state. And / or

[0080] S5202 If the air conditioner is in heating mode, T1 > δT, and T1 - δT ≥ M, the air conditioner will activate the self-cleaning mode, and the fan speed of the indoor unit will be adjusted to the lowest level, and the fan air intake grille will be adjusted to the minimum air outlet position, so that the temperature of the coil will return to normal.

[0081] For example, if M is 3, and the air conditioner is in heating mode, after the indoor temperature t2 changes from 18℃ when the air conditioner is turned on again to the required temperature t3 of 25℃ for the air conditioner to run again, the current coil temperature T1 is 19℃. The calculated coil temperature δT is 14℃. At this time, T1 > δT, and T1 - δT ≥ M. Then, the air conditioner activates its self-cleaning mode, and the indoor unit's fan speed is adjusted to the lowest setting, and the fan's air intake grille is adjusted to the minimum airflow position, allowing the coil temperature to return to normal, i.e., |T1 - δT| < M when the coil temperature returns to normal. The air conditioner then maintains its current state.

[0082] This invention also provides an air conditioner, which includes a controller configured to execute the control method described above. The control method is the same as that described in the previous embodiments, and will not be repeated here.

[0083] When employing the above technical solution, the air conditioner control method and air conditioner of the present invention acquire indoor PM values, operating parameters during air conditioner operation, and coil temperature; calculate the calculated coil temperature based on the operating parameters; compare the indoor PM values ​​and the calculated coil temperature with the acquired coil temperature values ​​to obtain a temperature comparison threshold M; and selectively adjust the air conditioner based on the PM value comparison result or based on the PM value comparison result and the temperature comparison threshold M. When employing the above technical solution, it determines whether the air conditioner's performance is affected by PM; when it is determined that the air conditioner's performance is affected by PM, it adjusts the air intake grille to control the air intake volume, thereby maximizing air purification.

[0084] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0085] It should be noted that although the detailed steps of the method of this application have been described in detail above, those skilled in the art can combine, split and rearrange the above steps without departing from the basic principles of this application. Such modified technical solutions do not change the basic concept of this application and therefore fall within the protection scope of this application.

[0086] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that, The control method includes the following steps: Obtain the start-up command and operation instruction of the air conditioner; Obtain the current indoor PM value, the operation parameters during the operation of the air conditioner, and the current coil temperature; Calculate the calculated temperature δT of the coil according to the operation parameters; Compare the current indoor PM value and obtain the PM value comparison result, compare the calculated temperature of the coil with the current coil temperature, and obtain the temperature comparison threshold M; and Selectively adjust the air conditioner according to the PM value comparison result or according to the PM value comparison result and the temperature comparison threshold M; The step of "comparing the current indoor PM value" specifically includes: comparing the first indoor PM value PM1 when the air conditioner is first turned on with the second indoor PM value PM2 when the air conditioner is turned on again; The step of "selectively adjusting the air conditioner according to the PM value comparison result or according to the PM value comparison result and the temperature comparison threshold M" specifically includes: When PM2 < PM1, control the coil temperature of the air conditioner according to the calculated temperature δT of the coil; When PM2 > PM1, compare the calculated temperature δT of the coil with the current coil temperature T1 value to obtain the temperature comparison threshold M, and then selectively control the air conditioner according to the temperature comparison threshold M.

2. The air conditioning control method according to claim 1, characterized in that, The step of "calculating the calculated temperature δT of the coil according to the operation parameters" specifically includes: According to the operation parameters, and in combination with the change value N of the coil temperature corresponding to each degree change of the indoor temperature obtained when the air conditioner is first operated, calculate the calculated temperature δT of the coil.

3. The air conditioning control method according to claim 2, characterized in that, The "change value N of the coil temperature corresponding to each degree change of the indoor temperature obtained when the air conditioner is first operated" is calculated according to the following formula: N = 丨T - t丨 / 丨t1 - t丨, where T is the temperature of the coil when the air conditioner is first turned on, t is the indoor temperature when the air conditioner is first turned on, t1 is the temperature required by the first operation instruction of the air conditioner.

4. The air conditioning control method according to claim 3, characterized in that, The operation parameters during the operation of the air conditioner include t2, t3, where t2 is the indoor temperature when the air conditioner is turned on again, t3 is the temperature required by the operation instruction when the air conditioner is turned on again.

5. The air conditioning control method according to claim 4, characterized in that, "Calculating the calculated temperature δT of the coil according to the operation parameters" is calculated according to the following formula: δT = 丨T - t丨 * 丨t2 - t3丨 / 丨t1 - t丨.

6. The air conditioning control method according to claim 1, characterized in that, The step of "selectively controlling the air conditioner according to the temperature comparison threshold M" specifically includes: If the air conditioner is in the cooling state, T1 < δT, and δT - T1 ≥ M, make the air conditioner turn on the self-cleaning mode, and adjust the fan speed of the indoor unit of the air conditioner to the lowest, adjust the air inlet grille of the fan to the minimum air outlet position, so that the temperature of the coil returns to the normal state; and / or If the air conditioner is in the heating state, T1 > δT, and T1 - δT ≥ M, make the air conditioner turn on the self-cleaning mode, and adjust the fan speed of the indoor unit of the air conditioner to the lowest, adjust the air inlet grille of the fan to the minimum air outlet position, so that the temperature of the coil returns to the normal state.

7. The air conditioning control method according to claim 6, characterized in that, The temperature comparison threshold M is 3 - 5.

8. An air conditioner, characterized in that, The air conditioner includes a controller configured to perform the control method according to any one of claims 1 to 7.

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