Air conditioner control method and air conditioner

Abstract

The present application relates to the air conditioning technical field, specifically provide a kind of control method and air conditioner of air conditioner, to solve the noise generated in the operation process of existing air conditioner, cause the problem of bad experience to user.For this purpose, the control method of the present application includes: in response to the noise reduction instruction of air conditioner, make air conditioner according to the first demand temperature t runs, obtain the first noise value db when air conditioner maintains stable state;First noise value db is compared with the standard noise DB of the indoor unit of air conditioner, and first comparison result is obtained;According to first comparison result, selectively carry out noise reduction processing to air conditioner.In the case of using the above technical scheme, the noise generated in the operation process of air conditioner is reduced, and the user experience is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, specifically providing an air conditioning control method 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] Currently, air conditioning is widely used and has become a necessity of daily life. With its widespread adoption, the demands for its use and functions are increasing. Besides functional requirements, users also place great importance on the user experience. In particular, the noise generated by thermal expansion and contraction due to temperature differences over time, as well as the friction noise produced by the air conditioner fan, can be transmitted into the living space with the airflow, creating a negative experience for the user.

[0004] Therefore, there is an urgent need to develop a new air conditioning control method to reduce the noise generated by the air conditioner during operation and improve user experience satisfaction. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem of noise generated by existing air conditioners during operation, which causes a bad user experience.

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

[0007] In response to the noise reduction command of the air conditioner, the air conditioner is made to operate at the first required temperature t, the first noise value db when the air conditioner maintains a stable state is obtained, and the absolute value of the temperature difference between the first required temperature t and the current ambient temperature t1 is obtained as |t-t1|.

[0008] The first noise value (dB) is compared with the standard noise level (dB) of the indoor unit of the air conditioner, and a first comparison result is obtained.

[0009] Based on the first comparison result, noise reduction processing is selectively applied to the air conditioner.

[0010] In the preferred embodiment of the above-mentioned air conditioner control method, the step of "selectively performing noise reduction processing on the air conditioner based on the first comparison result" specifically includes:

[0011] If |db-DB|≤M, no noise reduction processing is performed on the air conditioner;

[0012] If |db-DB| > M, then the air conditioner should be subjected to noise reduction processing;

[0013] Where M is the comparison threshold.

[0014] In the preferred embodiment of the above-mentioned air conditioner control method, the step of "if |db-DB|>M, perform noise reduction processing on the air conditioner" specifically includes:

[0015] The current working mode is switched, and a second required temperature is set according to the switched working mode and the absolute value of the temperature difference |t-t1|, while keeping the speed of the indoor unit fan motor of the air conditioner constant;

[0016] Obtain the second noise value db1 when the air conditioner maintains a stable state;

[0017] The first noise value db is compared with the second noise value db1, and a second comparison result is obtained;

[0018] Based on the second comparison result, noise reduction processing is selectively applied to the air conditioner.

[0019] In the preferred embodiment of the above-mentioned air conditioning control method, "setting the second required temperature according to the switched operating mode and the absolute value of the temperature difference |t-t1|" includes:

[0020] If the current operating mode is cooling mode, then switch to heating mode, and the second required temperature is t+|t-t1|.

[0021] In the preferred embodiment of the above-mentioned air conditioning control method, "setting the second required temperature according to the switched operating mode and the absolute value of the temperature difference |t-t1|" further includes:

[0022] If the current operating mode is heating mode, then switch to cooling mode, and the second required temperature is t-|t-t1|.

[0023] In the preferred embodiment of the above-mentioned air conditioner control method, "selectively performing noise reduction processing on the air conditioner according to the second comparison result" includes:

[0024] If |db-db1| < M, then the indoor unit fan speed of the air conditioner will be reduced.

[0025] In the preferred technical solution of the above-mentioned air conditioner control method, "downgrading the speed of the indoor unit fan of the air conditioner" is carried out in the order of strong → high wind → low wind. If the fan speed is low at this time, no downgrading adjustment is performed.

[0026] In the preferred embodiment of the above-mentioned air conditioner control method, "selectively performing noise reduction processing on the air conditioner according to the second comparison result" further includes:

[0027] If |db-db1| > M, while ensuring the coil temperature of the air conditioner, increase the operating frequency of the air conditioner compressor and / or decrease the angle of the air conditioner's electronic expansion valve.

[0028] In the preferred embodiment of the above-mentioned air conditioner control method, the comparison threshold M is 3-5.

[0029] In a second aspect, the present invention also provides an air conditioner, the air conditioner including a controller configured to perform the control method of the air conditioner described above.

[0030] When the above technical solution is adopted, the air conditioner control method and air conditioner of the present invention compare the first noise value db when the air conditioner maintains a stable state with the standard noise db of the indoor unit being adjusted, and selectively perform noise reduction processing on the air conditioner according to the comparison result, thereby reducing the noise generated by the air conditioner during operation and improving user experience satisfaction. Attached Figure Description

[0031] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0032] Figure 1 This is a schematic flowchart of an air conditioner control method according to an embodiment of the present invention;

[0033] Figure 2 This is a schematic flowchart illustrating the steps of selectively performing noise reduction processing on an air conditioner based on a first comparison result, according to an embodiment of the present invention.

[0034] Figure 3 This is a schematic flowchart illustrating the steps of noise reduction processing of the air conditioner if |db-DB| > M according to an embodiment of the present invention.

[0035] Figure 4 This is a schematic flowchart illustrating the step of setting a second required temperature based on the converted working mode and the absolute value of the temperature difference |t-t1| according to an embodiment of the present invention.

[0036] Figure 5 This is a schematic flowchart illustrating the steps of selectively performing noise reduction processing on an air conditioner based on a second comparison result, according to an embodiment of the present invention. Detailed Implementation

[0037] 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.

[0038] Figure 1 This is a schematic flowchart of an air conditioner control method according to an embodiment of the present invention. Figure 1 As shown, the air conditioner control method includes the following steps:

[0039] S100 responds to the noise reduction command of the air conditioner, causing the air conditioner to operate at the first required temperature t. When the air conditioner reaches the first required temperature t, it maintains a stable state, obtains the first noise value db when the air conditioner maintains a stable state, and obtains the absolute value of the temperature difference between the first required temperature t and the current ambient temperature t1, |t-t1|.

[0040] The first required temperature t is the temperature set by the user. For example, if the air conditioner is in cooling mode, the first required temperature t is 20 degrees Celsius. The current ambient temperature t1 is the current indoor temperature. For example, the current indoor temperature t1 is 22 degrees Celsius.

[0041] The absolute value of the temperature difference |t-t1| is |20-22| = 2 degrees Celsius.

[0042] For example, if the air conditioner is in heating mode, the first required temperature t is 26 degrees Celsius, and the current indoor temperature t1 is 23 degrees Celsius.

[0043] The absolute value of the temperature difference |t-t1| is |26-23| = 3 degrees Celsius.

[0044] S200 compares the first noise value (dB) with the standard noise level (dB) of the indoor unit of the air conditioner and obtains the first comparison result.

[0045] Based on the first comparison result, the S300 selectively performs noise reduction processing on the air conditioner.

[0046] When the above technical solution is adopted, the air conditioner control method of the present invention compares the first noise value (db) of the air conditioner when it is in a stable state with the standard noise (db) of the indoor unit of the air conditioner, and selectively performs noise reduction processing on the air conditioner according to the comparison result, thereby reducing the noise generated by the air conditioner during operation and improving user experience satisfaction.

[0047] Figure 2This is a schematic flowchart illustrating the steps of selectively performing noise reduction processing on an air conditioner based on a first comparison result, according to an embodiment of the present invention. Figure 2 As shown, in a preferred embodiment of the above-described air conditioner control method, step S300, "selectively performing noise reduction processing on the air conditioner based on the first comparison result," specifically includes:

[0048] S310 If |db-DB|≤M, no noise reduction processing is performed on the air conditioner;

[0049] S320 If |db-DB|>M, perform noise reduction processing on the air conditioner;

[0050] Where M is the comparison threshold.

[0051] In a preferred embodiment of the above-described air conditioner control method, the comparison threshold M is 3-5 dB. M can be 3 dB, 4 dB, or 5 dB.

[0052] For example, M = 3 dB, the first noise level detected is 47 dB, and the standard noise level of the indoor unit of the air conditioner is 50 dB.

[0053] |db-DB| = |47-50| = 3 dB

[0054] At this time, the air conditioner does not require noise reduction.

[0055] For example, M = 3 dB, the first noise level detected is 56 dB, and the standard noise level of the indoor unit of the air conditioner is 50 dB.

[0056] |db-DB| = |56-50| = 6 dB, that is, |db-DB| > 3.

[0057] At this point, the air conditioner needs to be noise-reduced.

[0058] Figure 3 This is a schematic flowchart illustrating the steps of noise reduction processing for the air conditioner according to an embodiment of the present invention, where |db-DB| > M. Figure 3 As shown, in the preferred embodiment of the above-mentioned air conditioner control method, step S320 "if |db-DB|>M, perform noise reduction processing on the air conditioner" specifically includes:

[0059] S321 switches the current operating mode, sets the second required temperature based on the switched operating mode and the absolute value of the temperature difference |t-t1|, and keeps the indoor unit fan motor speed constant;

[0060] S322 obtains the second noise value (db1) when the air conditioner maintains a stable state;

[0061] S323 compares the first noise value db with the second noise value db1 and obtains a second comparison result;

[0062] Based on the second comparison result, S324 selectively performs noise reduction processing on the air conditioner.

[0063] Figure 4 This is a schematic flowchart illustrating the step of setting the second required temperature based on the converted operating mode and the absolute value of the temperature difference |t-t1| according to an embodiment of the present invention. Figure 4 As shown, in a preferred embodiment of the above-described air conditioning control method, S321 "setting the second required temperature according to the switched operating mode and the absolute value of the temperature difference |t-t1|" includes:

[0064] If the current operating mode is cooling mode, S3211 will switch to heating mode, and the second required temperature will be t+|t-t1|.

[0065] For example, if the current operating mode is cooling mode, the first required temperature t is 20 degrees Celsius, and the current indoor temperature t1 is 22 degrees Celsius, then switch to heating mode.

[0066] The second required temperature is t + |t - t1| = 20 + |20 - 22| = 22 degrees Celsius.

[0067] If the current operating mode of S3212 is heating mode, it will switch to cooling mode, and the second required temperature is t-|t-t1|.

[0068] For example, if the current operating mode is heating mode, the first required temperature t is 26 degrees Celsius, and the current indoor temperature t1 is 23 degrees Celsius, then switch to cooling mode.

[0069] The second required temperature is t - |t - t1| = 26 - |26 - 23| = 23 degrees Celsius.

[0070] The purpose of performing step S321 is to determine whether the noise change under different operating modes, when the same temperature change occurs, meets the standard M. The standard M can be 3 dB, or it can be 4 dB or 5 dB.

[0071] Figure 5 This is a schematic flowchart illustrating the steps of selectively performing noise reduction processing on an air conditioner based on a second comparison result, according to an embodiment of the present invention. Figure 5 As shown, in the preferred embodiment of the above-mentioned air conditioner control method, S324, "selectively performing noise reduction processing on the air conditioner based on the second comparison result," includes:

[0072] S3241 If |db-db1| < M, then the indoor unit fan speed of the air conditioner is downgraded. In the preferred technical solution of the above air conditioner control method, "downgrading the indoor unit fan speed" is performed according to the following steps: strong → high fan speed → low fan speed. If the fan speed is already at low fan speed, then no downgrading adjustment is performed.

[0073] For example, M = 3 dB, the first noise level db is 47 dB, and the second noise level db1 is 49 dB.

[0074] If |db-db1| = |47-49| = 2 dB, then |db-db1| < 3.

[0075] At this point, the influence of the system can be ruled out during air conditioner operation. Assuming the air conditioner noise is generated by the fan, the fan speed will be reduced to a lower setting, following the sequence: strong → high fan speed → low fan speed. That is, if the fan speed is at the strong setting, it will be at the high fan speed; or if the fan speed is at the high fan speed, it will be at the low fan speed; or if the fan speed is at the low fan speed, no adjustment is needed because the wind noise is very low compared to the strong and high fan speeds.

[0076] S3242 If |db-db1| > M, while ensuring the coil temperature of the air conditioner, increase the operating frequency of the air conditioner compressor and / or decrease the angle of the air conditioner's electronic expansion valve.

[0077] For example, M = 3 dB, the first noise level db is 47 dB, and the second noise level db1 is 55 dB.

[0078] If |db-db1| = |47-55| = 8 dB, then |db-db1| > 3.

[0079] At this point, the refrigerant is causing significant interference during the air conditioner's operation. Therefore, adjustments to the air conditioning system are needed to reduce refrigerant noise. First, determine the compressor's operating frequency (f) and the electronic expansion valve's angle (θ) at the initial noise level (dB). While maintaining the coil temperature, increase the compressor's operating frequency and decrease the electronic expansion valve's angle (θ), or decrease the angle (θ) to increase the liquid proportion of the refrigerant in the evaporator, allowing for more complete flow and reducing refrigerant noise transmission.

[0080] Furthermore, while ensuring the coil temperature, we take n = |db-db1| / db1. At this time, the operating frequency is increased to (1+n)*f, and the electronic expansion valve is reduced to (1-n)*θ.

[0081] This invention detects air conditioner noise and compares the actual noise level with a standard noise level to determine if noise reduction is needed. If noise reduction is required, it is achieved by adjusting the fan speed, compressor frequency, and the angle of the electronic expansion valve.

[0082] After making the above adjustments, if the noise level still fails to meet the standard noise level, the air conditioner will be powered off and restarted to restore factory settings. The system will then be retested the next time it is turned on.

[0083] See Figures 1-5 This invention also provides an air conditioner, which includes a controller configured to execute the control method described above. The control method of this invention is similar to... Figures 1-5 The control method described in the previous embodiment is the same, and will not be repeated here.

[0084] In the preferred technical solution of the aforementioned air conditioner, see [reference needed]. Figures 1-5 The control method configured to be executed by the controller includes the following steps:

[0085] S100 responds to the noise reduction command of the air conditioner, so that the air conditioner operates at the first required temperature t. When the air conditioner reaches the first required temperature t, the air conditioner maintains a stable state, obtains the first noise value db when the air conditioner maintains a stable state, and obtains the absolute value of the temperature difference between the first required temperature t and the current ambient temperature t1, |t-t1|.

[0086] S200 compares the first noise value (dB) with the standard noise level (dB) of the indoor unit of the air conditioner and obtains the first comparison result;

[0087] Based on the first comparison result, the S300 selectively performs noise reduction processing on the air conditioner;

[0088] S310 If |db-DB|≤M, no noise reduction processing is performed on the air conditioner;

[0089] S320 If |db-DB| > M, perform noise reduction processing on the air conditioner. The specific steps of S320 include:

[0090] S321 switches the current operating mode, sets the second required temperature based on the switched operating mode and the absolute value of the temperature difference |t-t1|, and keeps the indoor unit fan motor speed constant. S321 specifically includes:

[0091] S3211 If the current operating mode is cooling mode, then switch to heating mode. The second required temperature is t + |t - t1|.

[0092] If the current operating mode is heating mode, S3212 will switch to cooling mode, and the second required temperature will be t-|t-t1|.

[0093] S322 obtains the second noise value (db1) when the air conditioner maintains a stable state;

[0094] S323 compares the first noise value db with the second noise value db1 and obtains a second comparison result;

[0095] Based on the second comparison result, S324 selectively performs noise reduction processing on the air conditioner. The specific steps of S324 include:

[0096] S3241 If |db-db1| < M, then the indoor unit fan speed of the air conditioner is reduced. In the preferred technical solution of the above air conditioner control method, "reducing the indoor unit fan speed" is done in the order of strong → high fan speed → low fan speed. If the fan speed is already at low fan speed, then no reduction adjustment is made.

[0097] S3242 If |db-db1| > M, while ensuring the coil temperature of the air conditioner, increase the operating frequency of the air conditioner compressor and / or decrease the angle of the air conditioner's electronic expansion valve.

[0098] Where M is the comparison threshold.

[0099] When the above technical solution is adopted, the controller of the air conditioner of the present invention uses the above control method to compare the first noise value db when the air conditioner maintains a stable state with the standard noise db of the indoor unit being adjusted, and selectively performs noise reduction processing on the air conditioner according to the comparison result, thereby reducing the noise generated by the air conditioner during operation and improving user experience satisfaction.

[0100] 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.

[0101] 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.

[0102] 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: In response to the noise reduction command of the air conditioner, the air conditioner is made to operate at the first required temperature t, the first noise value db when the air conditioner maintains a stable state is obtained, and the absolute value of the temperature difference between the first required temperature t and the current ambient temperature t1 is obtained as |t-t1|. The first noise value (dB) is compared with the standard noise level (dB) of the indoor unit of the air conditioner, and a first comparison result is obtained. Based on the first comparison result, noise reduction processing is selectively applied to the air conditioner; The step of "selectively performing noise reduction processing on the air conditioner based on the first comparison result" specifically includes: If |db-DB| > M, noise reduction processing is performed on the air conditioner, where M is the comparison threshold; The step of "if |db-DB|>M, perform noise reduction processing on the air conditioner" specifically includes: The current working mode is switched, and a second required temperature is set according to the switched working mode and the absolute value of the temperature difference |t-t1|, so that the air conditioner operates at the second required temperature and the speed of the indoor unit fan motor of the air conditioner remains unchanged; Obtain the second noise value db1 when the air conditioner maintains a stable state; The first noise value db is compared with the second noise value db1, and a second comparison result is obtained; Based on the second comparison result, noise reduction processing is selectively applied to the air conditioner; "Setting the second required temperature based on the converted working mode and the absolute value of the temperature difference |t-t1|" includes: If the current operating mode is cooling mode, then switch to heating mode, and the second required temperature is t+|t-t1|; If the current operating mode is heating mode, then switch to cooling mode, and the second required temperature is t-|t-t1|.

2. The air conditioning control method according to claim 1, characterized in that, The step of "selectively performing noise reduction processing on the air conditioner based on the first comparison result" further includes: If |db-DB|≤M, no noise reduction processing is applied to the air conditioner.

3. The air conditioning control method according to claim 1, characterized in that, "Selectively applying noise reduction processing to the air conditioner based on the second comparison result" includes: If |db-db1| < M, then the indoor unit fan speed of the air conditioner will be reduced.

4. The air conditioning control method according to claim 3, characterized in that, "Downsizing the indoor unit fan speed of the air conditioner" means downsizing in the order of strong → high wind → low wind. If the fan speed is already at low wind, no downsizing adjustment will be made.

5. The air conditioning control method according to claim 1, characterized in that, "Based on the second comparison result, selectively performing noise reduction processing on the air conditioner" further includes: If |db-db1| > M, while ensuring the coil temperature of the air conditioner, increase the operating frequency of the air conditioner compressor and / or decrease the angle of the air conditioner's electronic expansion valve.

6. The air conditioning control method according to any one of claims 1-5, characterized in that, The comparison threshold M is 3-5 dB.

7. An air conditioner, characterized in that, The air conditioner includes a controller configured to perform the control method of the air conditioner according to any one of claims 1-6.

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