Air conditioner energy-saving control method and device, air conditioner and computer readable storage medium

Abstract

The embodiment of the invention provides an energy-saving control method and device for an air conditioner, the air conditioner and a computer readable storage medium. The energy-saving control method for the air conditioner comprises the steps that the condition that the temperature difference between the current indoor temperature and the set temperature is smaller than or equal to a first environment temperature difference threshold value is responded; temperature reaching time is determined according to the current indoor temperature and the set temperature; and the target frequency of the compressor is determined according to the temperature reaching time, and frequency reduction adjustment is conducted on the compressor according to the target frequency of the compressor.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to an air conditioner energy-saving control method, device, air conditioner and computer-readable storage medium. Background Art

[0002] In the related art, when the air conditioner controls the frequency of the compressor, it is necessary to repeatedly adjust the frequency of the compressor according to the response result of the inner ring temperature to the frequency regulation; the above-mentioned adjustment method has a large hysteresis, which can easily lead to excessive dehumidification and temperature overshoot, reduce the comfort of use, and cause energy waste. Summary of the invention

[0003] The embodiments of the present application provide an air conditioner energy-saving control method, device, air conditioner and computer-readable storage medium, which can improve the timeliness of compressor frequency adjustment, thereby improving usage comfort and energy-saving effect.

[0004] In a first aspect, an embodiment of the present application provides an air conditioner energy-saving control method, comprising: in response to determining that the temperature difference between the current indoor temperature and the set temperature is less than or equal to a first ambient temperature difference threshold, determining a temperature-reaching time according to the current indoor temperature and the set temperature; determining a target frequency of the compressor according to the temperature-reaching time, and reducing the frequency of the compressor according to the target frequency of the compressor.

[0005] In some embodiments, the estimated temperature-reaching time is determined based on the current indoor temperature and the set temperature, including: controlling the air conditioner to operate with current operating parameters for a first preset time; determining the actual indoor temperature change curve based on the indoor temperature sampling data within the first preset time and the indoor temperature standard change curve; determining the temperature-reaching time based on the current indoor temperature, the set temperature and the actual indoor temperature change curve.

[0006] In some embodiments, a target frequency of the compressor is determined based on the temperature-reaching time, and the compressor is frequency-reduced based on the target frequency of the compressor, including: determining a first target frequency of the compressor based on the temperature-reaching time; determining whether the first target frequency of the compressor coincides with a frequency shielding point of the compressor; in response to determining that the first target frequency of the compressor coincides with the frequency shielding point of the compressor, frequency-reducing the compressor based on the temperature-reaching time and the first target frequency.

[0007] In some embodiments, the air conditioner energy-saving control method includes: in response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is less than or equal to a first exhaust temperature difference threshold, controlling the electronic expansion valve to increase the opening according to a first preset opening adjustment value every second time interval, and controlling the indoor fan to maintain the current speed; in response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the first exhaust temperature difference threshold and less than or equal to a second exhaust temperature difference threshold, controlling the electronic expansion valve to increase the opening according to a second preset opening adjustment value every second time interval, and controlling the indoor fan to maintain the current speed; in response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the second exhaust temperature difference threshold air temperature difference threshold and is less than or equal to the third exhaust temperature difference threshold, control the electronic expansion valve to increase the opening according to the second preset opening adjustment value every third time interval, and control the speed of the indoor fan according to the current indoor coil temperature and the inner disk critical temperature; in response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and is less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is greater than or equal to the first exhaust temperature threshold, control the electronic expansion valve to increase the opening according to the first preset opening adjustment value every second time interval; in response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and is less than or equal to the fourth exhaust temperature difference threshold In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is less than the second exhaust temperature threshold and greater than or equal to the third exhaust temperature threshold, the electronic expansion valve is controlled to increase the opening according to the second preset opening adjustment value every second time interval, and the speed of the indoor fan is controlled according to the current indoor coil temperature and the inner coil critical temperature; in response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is less than the second exhaust temperature threshold and greater than or equal to the third exhaust temperature threshold, the electronic expansion valve is controlled to increase the opening according to the second preset opening adjustment value every third time interval, and the speed of the indoor fan is controlled according to the current indoor coil temperature and the inner coil critical temperature; When the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and is less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is less than the third exhaust temperature threshold, the electronic expansion valve is controlled to maintain the current opening, and the speed of the indoor fan is controlled according to the current indoor coil temperature and the inner disk critical temperature; in response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the fourth exhaust temperature difference threshold and is less than or equal to the fifth exhaust temperature difference threshold, the electronic expansion valve is controlled to reduce the opening according to the second preset opening adjustment value at every third time interval, and the speed of the indoor fan is controlled according to the current indoor coil temperature and the inner disk critical temperature;In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the fifth exhaust temperature difference threshold and less than or equal to the sixth exhaust temperature difference threshold, the electronic expansion valve is controlled to reduce the opening by the first preset opening adjustment value every third time interval, and the indoor fan is controlled to maintain the current speed; in response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the sixth exhaust temperature difference threshold, the electronic expansion valve is controlled to reduce the opening by the first preset opening adjustment value every second time interval, and the indoor fan is controlled to maintain the current speed; the second time interval is less than the third time interval, and the first preset opening adjustment value is greater than the second preset opening adjustment value. ;

[0008] In some embodiments, the air conditioner energy saving control method includes: controlling the speed of the indoor fan according to the current indoor coil temperature and the critical temperature of the inner coil.

[0009] In some embodiments, the speed of the indoor fan is controlled according to the current indoor coil temperature and the critical temperature of the inner disk, including: determining whether the current indoor coil temperature is greater than the critical temperature of the inner disk; in response to determining that the current indoor coil temperature is greater than the critical temperature of the inner disk, controlling the indoor fan to reduce the speed by a preset speed reduction value at every first time interval; in response to determining that the current indoor coil temperature is less than or equal to the critical temperature of the inner disk, controlling the indoor fan to increase the speed by a preset speed increase value at every first time interval.

[0010] In some embodiments, before determining whether the current indoor coil temperature is greater than the critical temperature of the inner coil, the air conditioner energy-saving control method includes: in response to determining that the temperature difference between the current indoor temperature and the set temperature is less than or equal to a second ambient temperature difference threshold, controlling the indoor fan to operate at a first wind speed for a second preset time; in response to determining that the temperature difference between the current indoor temperature and the set temperature is greater than the second ambient temperature difference threshold, controlling the indoor fan to operate at a second wind speed for the second preset time; the second ambient temperature difference threshold is greater than the first ambient temperature difference threshold, and the first wind speed is greater than the second wind speed.

[0011] In a second aspect, an embodiment of the present application provides an energy-saving control device, comprising: a temperature-reaching time calculation circuit, configured to determine the temperature-reaching time according to the current indoor temperature and the set temperature in response to determining that the temperature difference between the current indoor temperature and the set temperature is less than or equal to a first ambient temperature difference threshold; a compressor frequency control circuit, configured to determine the target frequency of the compressor according to the temperature-reaching time, and to reduce the frequency of the compressor according to the target frequency of the compressor.

[0012] In a third aspect, an embodiment of the present application provides an air conditioner, comprising: a memory storing a computer program; and a processor, wherein when the computer program is executed by the processor, the air conditioner energy-saving control method as described in any of the above embodiments is implemented.

[0013] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is loaded by a processor to execute the steps in the air conditioner energy-saving control method described above.

[0014] The air conditioner energy-saving control method provided in the embodiment of the present application estimates the time for reaching the temperature based on the current indoor temperature and the set temperature when the temperature difference between the current indoor temperature and the set temperature is less than or equal to the first ambient temperature difference threshold, and then determines the target frequency of the compressor based on the time for reaching the temperature, so as to reduce the frequency of the compressor in advance according to the target frequency of the compressor; compared with the related art, the air conditioner energy-saving control method performs frequency reduction control on the compressor in advance based on the estimated and determined time for reaching the temperature, which can avoid the lag problem existing in the control method of the related art, improve the timeliness of the compressor frequency adjustment, and thus improve the use comfort and energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 is a flow chart of an air conditioner energy-saving control method provided by some embodiments of the present application;

[0017] Figure 2 is a partial flow chart of an air conditioner energy-saving control method provided by some embodiments of the present application;

[0018] Figure 3 is another partial flow chart of the air conditioner energy-saving control method provided by some embodiments of the present application;

[0019] Figure 4 is another partial flow chart of the air conditioner energy-saving control method provided by some embodiments of the present application;

[0020] Figure 5 is another partial flow chart of the air conditioner energy-saving control method provided by some embodiments of the present application;

[0021] Figure 6 This is a structural diagram of an air conditioner provided in some embodiments of the present application.

[0022] Description of main component symbols:

[0023] 1- air conditioner, 10- processor, 20- memory. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0026] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0027] The use of "suitable for" or "configured to" in this application is meant to be open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. In addition, the use of "based on" is meant to be open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values ​​can be based on additional conditions or values ​​beyond the stated values ​​in practice.

[0028] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0029] like Figure 1 As shown, in the first aspect, an embodiment of the present application provides an air conditioner energy-saving control method, which includes S10~S20, and can improve the timeliness of compressor frequency adjustment, thereby improving usage comfort and energy-saving effect.

[0030] S10: In response to determining that the temperature difference between the current indoor temperature and the set temperature is less than or equal to the first ambient temperature difference threshold, determining a temperature reaching time according to the current indoor temperature and the set temperature.

[0031] Here, the current indoor temperature can be determined by real-time measurement by a temperature sensor arranged on the indoor side. The set temperature is the target temperature that the indoor environment is expected to reach, which can be set by manual input by the user, or automatically generated by the air conditioner 1 according to operating conditions such as the user's usage habits, current environmental information, etc., to obtain a comfortable temperature environment. The first environmental temperature difference threshold can be pre-set in the air conditioner 1 to determine the degree of similarity between the current indoor temperature and the set temperature; if the temperature difference between the current indoor temperature and the set temperature is less than or equal to the first environmental temperature difference threshold, it means that the current indoor temperature is closer to the set temperature, and the air conditioner 1 can be energy-saving controlled; on the contrary, if the temperature difference between the current indoor temperature and the set temperature is greater than the first environmental temperature difference threshold, it means that the current indoor temperature is relatively deviated from the set temperature, and the air conditioner 1 can be controlled to continue to operate according to conventional cooling / heating operating parameters.

[0032] Here, the temperature reaching time refers to the time required from the current moment to reach the set temperature. The temperature reaching time is determined according to the current indoor temperature and the set temperature, and the temperature reaching time can be determined based on the temperature reaching time calculation method pre-set in the air conditioner 1.

[0033] S20: determining a target frequency of the compressor according to the temperature reaching time, and reducing the frequency of the compressor according to the target frequency of the compressor.

[0034] Here, the correspondence between the temperature reaching time and the frequency of the compressor can be preset in the air conditioner 1. In this way, the compressor frequency value corresponding to the temperature reaching time can be determined, and the compressor frequency value can be used as the target frequency of the compressor, thereby reducing the frequency of the compressor.

[0035] The air conditioner energy-saving control method provided in the embodiment of the present application estimates the time for reaching the temperature based on the current indoor temperature and the set temperature when the temperature difference between the current indoor temperature and the set temperature is less than or equal to the first ambient temperature difference threshold, and then determines the target frequency of the compressor based on the time for reaching the temperature, so as to reduce the frequency of the compressor in advance according to the target frequency of the compressor; compared with the related art, the air conditioner energy-saving control method provided in the embodiment of the present application performs frequency reduction control on the compressor based on the estimated and determined time for reaching the temperature, which can avoid the lag problem existing in the control method of the related art, improve the timeliness of the compressor frequency adjustment, and thus improve the use comfort and energy-saving effect.

[0036] The calculation method of the temperature reaching time can be determined according to actual needs, and the present application embodiment does not limit this. Figure 2 As shown, in some embodiments, S10 may include S11 to S13 to more accurately estimate the temperature-reaching time.

[0037] S11: Control the air conditioner 1 to operate with current operating parameters for a first preset time.

[0038] Here, the first preset duration can be pre-set in the control system of the air conditioner 1; the specific value of the first preset duration can be determined according to actual needs, and can be, for example, 5 minutes or other different values, which are not limited in the embodiment of the present application. When it is determined that the temperature difference between the current indoor temperature and the set temperature is less than or equal to the first ambient temperature difference threshold, the air conditioner 1 can be controlled to continue to operate from this moment to the first preset duration with the current operating parameters.

[0039] S12: Determine the actual change curve of the indoor temperature according to the indoor temperature sampling data within the first preset time period and the indoor temperature standard change curve.

[0040] The standard indoor temperature change curve can be predetermined based on the historical operating data and / or experimental data of the air conditioner 1, and pre-set in the control system of the air conditioner 1; here, the standard indoor temperature change curve represents the standard change state of the indoor temperature over time when the air conditioner 1 is cooling / heating, and air conditioners 1 of different specifications may have different standard indoor temperature change curves.

[0041] According to the indoor temperature sampling data within the first preset time period and the indoor temperature standard change curve, the indoor temperature actual change curve can be fitted and determined. The actual fitting algorithm can be determined according to actual needs, and the embodiment of the present application does not limit this. Compared with the indoor temperature standard change curve, the indoor temperature actual change curve is more closely matched with the actual use condition of the air conditioner 1, so that it can more accurately characterize the actual change state of the indoor temperature of the actual use environment when the air conditioner 1 is cooling / heating over time.

[0042] S13: Determine the temperature reaching time according to the current indoor temperature, the set temperature and the actual indoor temperature change curve.

[0043] According to the current indoor temperature, the set temperature and the actual change curve of the indoor temperature, the temperature reaching time can be determined more accurately. Exemplarily, the current indoor temperature and the set temperature can be input into the actual change curve of the indoor temperature to obtain the temperature reaching time.

[0044] By setting S11 to S13, the temperature-reaching time can be estimated more accurately, thereby ensuring the control accuracy and timeliness of the subsequent frequency reduction control of the compressor based on the temperature-reaching time.

[0045] like Figure 3 As shown, in some embodiments, S20 may include S21-S23.

[0046] S21: Determine a first target frequency of the compressor according to the temperature reaching time.

[0047] Here, the relationship between the first target frequency of the compressor and the time to reach the temperature can be determined according to actual needs, and the embodiments of the present application do not limit this. In some embodiments, the first target frequency of the compressor and the time to reach the temperature are negatively correlated; if the time to reach the temperature is relatively long, the first target frequency of the compressor is relatively low; if the time to reach the temperature is relatively short, the first target frequency of the compressor is relatively high.

[0048] In some examples, a mapping relationship model between the temperature reaching time and the frequency of the compressor can be pre-established based on historical operation data and / or experimental data of the air conditioner 1; further, a compressor frequency value corresponding to the temperature reaching time can be determined based on the temperature reaching time, and the compressor frequency value can be used as the first target frequency of the compressor. In other examples, S21 can include S211-S212.

[0049] S211: Determine the time interval in which the temperature reaching time falls.

[0050] S212: Determine a compressor frequency value corresponding to the time interval according to the time interval, and use the compressor frequency value as a first target frequency of the compressor.

[0051] Exemplarily, a plurality of continuously distributed time intervals may be pre-set in the control system of the air conditioner 1, and a corresponding compressor frequency value may be set for each time interval. For example, at least two time intervals may be pre-set, and the at least two time intervals include a first time interval that is less than or equal to the first temperature reaching time threshold and a second time interval that is greater than the first temperature reaching time threshold and less than or equal to the second temperature reaching time threshold, and the compressor frequency value corresponding to the first time interval may be greater than the compressor frequency value corresponding to the second time interval. The specific values ​​of the first temperature reaching time threshold and the second temperature reaching time threshold may be determined according to actual needs, and the embodiments of the present application do not limit this; for example, the first temperature reaching time threshold may be 30 minutes, and the second temperature reaching time threshold may be 60 minutes.

[0052] When it is determined that the temperature reaching time is within the first time interval, the compressor frequency value corresponding to the first time interval can be used as the first target frequency of the compressor; when it is determined that the temperature reaching time is within the second time interval, the compressor frequency value corresponding to the second time interval can be used as the first target frequency of the compressor.

[0053] S22: Determine whether the first target frequency of the compressor coincides with the frequency shielding point of the compressor. Here, the number of the frequency shielding points may be one or more, which is not limited in the embodiment of the present application.

[0054] S23: In response to determining that the first target frequency of the compressor coincides with the frequency shielding point of the compressor, the compressor is frequency-reduced according to the temperature reaching time and the first target frequency.

[0055] Here, different frequency shielding point processing methods can be pre-set for different temperature reaching times. When facing the frequency shielding point obstacle, the corresponding frequency shielding point processing method can be determined according to the temperature reaching time, and then the compressor frequency reduction adjustment strategy can be determined according to the corresponding frequency shielding point processing method and the first target frequency, so as to avoid the frequency shielding point under the premise of ensuring the best comfort and realize the best frequency reduction control of the compressor.

[0056] like Figure 4 As shown, illustratively, S23 may include S231 to S233.

[0057] S231: Determine the time interval in which the temperature reaching time falls.

[0058] S232: Determine a frequency shielding point processing method according to the above time interval, and determine a frequency reduction adjustment strategy of the compressor according to the frequency shielding point processing method and the first target frequency.

[0059] S233: Perform frequency reduction regulation on the compressor according to the frequency reduction regulation strategy of the compressor.

[0060] Here, a plurality of continuously distributed time intervals may be pre-set in the control system of the air conditioner 1, and a corresponding frequency shielding point processing method may be set for each time interval. For example, the first time interval and the second time interval as described above may be set.

[0061] Exemplarily, when it is determined that the temperature-reaching time is within the first time interval and the first target frequency of the compressor coincides with the frequency shielding point of the compressor, the first target frequency can be corrected upward to a second target frequency, which is greater than the first target frequency and less than the current operating frequency of the compressor; if the second target frequency also coincides with the frequency shielding point of the compressor, the compressor is controlled to continue operating at the current operating frequency for a second preset time and then reduce to a third target frequency, which is less than the first target frequency; if the second target frequency and the frequency shielding point of the compressor do not coincide, the compressor is controlled to reduce from the current operating frequency to the second target frequency.

[0062] As another example, when it is determined that the temperature reaching time is within the second time interval and the first target frequency of the compressor coincides with the frequency shielding point of the compressor, if the fourth target frequency and the frequency shielding point of the compressor do not coincide, the compressor can be controlled to continue to operate at the current operating frequency for a third preset time and then reduce to the fourth target frequency, the fourth target frequency is less than the first target frequency; if the fourth target frequency also coincides with the frequency shielding point of the compressor, the compressor is controlled to continue to operate at the current operating frequency for a fourth preset time and then reduce to the fifth target frequency, the fifth target frequency is less than the fourth target frequency. Among them, the fourth preset time is greater than the third preset time.

[0063] In some embodiments, the air conditioner energy-saving control method may include S31 to S39.

[0064] S31: In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is less than or equal to a first exhaust temperature difference threshold, the electronic expansion valve is controlled to increase the opening according to a first preset opening adjustment value at every second time interval, and the indoor fan is controlled to maintain the current speed.

[0065] The specific value of the first exhaust temperature difference threshold can be determined according to actual needs, and the embodiments of the present application do not limit this. In some examples, the first exhaust temperature difference threshold is greater than the first ambient temperature difference threshold; for example, the first exhaust temperature difference threshold may be 4°C, and the first ambient temperature difference threshold may be 2°C. The specific value of the second time interval can be determined according to actual needs, and the embodiments of the present application do not limit this; in some examples, the second time interval may be 20 seconds. The specific value of the first preset opening adjustment value can be determined according to actual needs, and the embodiments of the present application do not limit this. For example, the opening of the electronic expansion valve can be controlled to increase by 4p every 20 seconds, so that the opening of the electronic expansion valve increases progressively.

[0066] S32: In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the first exhaust temperature difference threshold and less than or equal to the second exhaust temperature difference threshold, the electronic expansion valve is controlled to increase the opening according to the second preset opening adjustment value at every second time interval, and the indoor fan is controlled to maintain the current speed.

[0067] Here, the first preset opening adjustment value is greater than the second preset opening adjustment value. The specific value of the second preset opening adjustment value can be determined according to actual needs, and the embodiment of the present application does not limit this. For example, the opening of the electronic expansion valve can be controlled to increase by 2p every 20 seconds, so that the opening of the electronic expansion valve increases progressively.

[0068] S33: In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the second exhaust temperature difference threshold and less than or equal to the third exhaust temperature difference threshold, the electronic expansion valve is controlled to increase the opening according to the second preset opening adjustment value at every third time interval, and the speed of the indoor fan is controlled according to the current indoor coil temperature and the critical temperature of the inner coil.

[0069] Here, the second time interval is less than the third time interval. The specific value of the third time interval can be determined according to actual needs, and the embodiment of the present application is not limited to this; in some examples, the third time interval can be 30 seconds. Exemplarily, the opening of the electronic expansion valve can be controlled to increase by 2p every 30 seconds, so that the opening of the electronic expansion valve increases progressively.

[0070] S34: In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is greater than or equal to the first exhaust temperature threshold, the electronic expansion valve is controlled to increase the opening according to the first preset opening adjustment value at every second time interval.

[0071] S35: In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is less than the first exhaust temperature threshold and greater than or equal to the second exhaust temperature threshold, the electronic expansion valve is controlled to increase the opening according to the second preset opening adjustment value at every second time interval.

[0072] S36: In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is less than the second exhaust temperature threshold and greater than or equal to the third exhaust temperature threshold, the electronic expansion valve is controlled to increase the opening according to the second preset opening adjustment value at every third time interval, and the speed of the indoor fan is controlled according to the current indoor coil temperature and the critical temperature of the inner coil.

[0073] S37: In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is less than the third exhaust temperature threshold, the electronic expansion valve is controlled to maintain the current opening, and the speed of the indoor fan is controlled according to the current indoor coil temperature and the critical temperature of the inner coil.

[0074] S38: In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the fourth exhaust temperature difference threshold and less than or equal to the fifth exhaust temperature difference threshold, the electronic expansion valve is controlled to reduce the opening according to the second preset opening adjustment value at every third time interval, and the speed of the indoor fan is controlled according to the current indoor coil temperature and the critical temperature of the inner coil.

[0075] S39: In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the fifth exhaust temperature difference threshold and less than or equal to the sixth exhaust temperature difference threshold, the electronic expansion valve is controlled to reduce the opening according to the first preset opening adjustment value every third time interval, and the indoor fan is controlled to maintain the current speed. Exemplarily, the opening of the electronic expansion valve can be controlled to decrease by 4p every 30 seconds, so that the opening of the electronic expansion valve is progressively reduced, and the indoor fan is controlled to maintain the current speed unchanged during this process.

[0076] S310: In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than a sixth exhaust temperature difference threshold, the electronic expansion valve is controlled to reduce the opening by a first preset opening adjustment value at every second time interval, and the indoor fan is controlled to maintain the current speed.

[0077] By setting S31 to S310, the electronic expansion valve can be finely adjusted gradually according to the range of the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature, so that the opening of the electronic expansion valve gradually approaches the target opening, and the exhaust temperature of the compressor is finely controlled to ensure that the actual exhaust temperature of the compressor is more consistent with the target exhaust temperature, so that the cooling / heating capacity of the compressor is more matched with the actual indoor demand, thereby improving the heat exchange comfort and energy saving effect. In addition, when the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is within a specific range, the speed of the indoor fan can also be controlled in linkage, further improving the comprehensiveness and perfection of the control process, so that the cooling / heating capacity of the compressor and the speed of the indoor fan are synchronously adjusted in linkage, so as to better meet the indoor temperature regulation needs.

[0078] In some embodiments, the air conditioner energy-saving control method may include S40.

[0079] S40: Controlling the speed of the indoor fan according to the current indoor coil temperature and the critical temperature of the inner coil.

[0080] Here, the current indoor coil temperature can be measured in real time by a temperature sensor installed on the heat exchange coil of the indoor heat exchanger; and the critical temperature of the inner coil can be determined according to the temperature difference between the indoor temperature and the set temperature, which is used as a critical condition for selecting the control strategy for the indoor fan speed.

[0081] like Figure 5 As shown, in some examples, the above-mentioned "controlling the speed of the indoor fan according to the current indoor coil temperature and the inner coil critical temperature" may include S41-S43.

[0082] S41: Determine whether the current indoor coil temperature is greater than the critical temperature of the indoor coil.

[0083] S42: In response to determining that the current indoor coil temperature is greater than the critical temperature of the indoor coil, controlling the indoor fan to reduce the speed by a preset speed reduction value at every first time interval.

[0084] S43: In response to determining that the current indoor coil temperature is less than or equal to the critical temperature of the indoor coil, controlling the indoor fan to increase the speed by a preset speed increase value at every first time interval.

[0085] Here, the absolute values ​​of the preset speed reduction value and the preset speed increase value may be the same or different, and this embodiment of the present application does not limit this.

[0086] By setting S41~S43, the appropriate control strategy can be selected more accurately to accurately adjust and control the speed of the indoor fan, and the stepless adjustment of the indoor fan speed can be realized in a refined manner, so that the indoor fan speed gradually approaches the target speed in a gradual manner, ensuring that the air supply experience is more comfortable; compared with the related technology that can only perform jump adjustment between different wind speeds, the air conditioner energy-saving control method provided in the embodiment of the present application can make the speed adjustment of the indoor fan more precise, better take into account the balance between the air outlet temperature and the air supply distance, and improve the comfort of indoor air supply.

[0087] Illustratively, before S41 , the air conditioner energy-saving control method may include S401 to S402 .

[0088] S401: In response to determining that the temperature difference between the current indoor temperature and the set temperature is less than or equal to a first exhaust temperature difference threshold, controlling the indoor fan to operate at a first wind speed for a second preset time period.

[0089] S402: In response to determining that the temperature difference between the current indoor temperature and the set temperature is greater than the first exhaust temperature difference threshold, controlling the indoor fan to operate at a second wind speed for a second preset time period.

[0090] The second ambient temperature difference threshold is greater than the first ambient temperature difference threshold, and the first wind speed is greater than the second wind speed. Exemplarily, the first wind speed may be the highest wind speed, and the second wind speed may be the second highest wind speed next to the highest wind speed.

[0091] In a second aspect, an embodiment of the present application provides an energy-saving control device, which includes: a temperature-reaching time calculation circuit, configured to determine the temperature-reaching time according to the current indoor temperature and the set temperature in response to determining that the temperature difference between the current indoor temperature and the set temperature is less than or equal to a first ambient temperature difference threshold; a compressor frequency control circuit, configured to determine the target frequency of the compressor according to the temperature-reaching time, and adjust the compressor according to the target frequency of the compressor.

[0092] like Figure 6 As shown, in the third aspect, an embodiment of the present application provides an air conditioner 1, including a processor and a memory, the memory storing a computer program, and when the computer program is executed by the processor, an air conditioner energy-saving control method provided in any of the above embodiments is implemented.

[0093] The processor 10 is connected to the memory 20, and can perform various actions and processes according to the program stored in the memory 20. Specifically, the processor 10 can be an integrated circuit chip with signal processing capabilities. The above-mentioned processor 10 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc., which can be an X86 architecture or an ARM architecture.

[0094] The memory 20 may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronously linked dynamic random access memory (SLDRAM), and direct memory bus random access memory (DRRAM). It should be noted that the memory 20 of the method described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0095] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. The computer program is loaded by the processor 10 to execute the steps in the control method of any of the above embodiments.

[0096] Exemplarily, the above-mentioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or magnetic tapes, etc.), optical disks (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks or key drives, etc.). The various computer-readable storage media described in the embodiments of the present application may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0097] The above is a detailed introduction to an air conditioner energy-saving control method, device, air conditioner and computer-readable storage medium provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An air conditioner energy saving control method, characterized in that: include: In response to determining that the temperature difference between the current indoor temperature and the set temperature is less than or equal to a first ambient temperature difference threshold, determining a temperature reaching time according to the current indoor temperature and the set temperature; The target frequency of the compressor is determined according to the temperature reaching time, and the compressor is frequency-reduced according to the target frequency of the compressor.

2. The air conditioner energy saving control method according to claim 1, characterized in that: Determining the estimated temperature reaching time according to the current indoor temperature and the set temperature includes: Controlling the air conditioner to operate with current operating parameters for a first preset time; Determine an actual indoor temperature change curve according to the indoor temperature sampling data within the first preset time period and the indoor temperature standard change curve; The temperature reaching time is determined according to the current indoor temperature, the set temperature and the actual change curve of the indoor temperature.

3. The air conditioner energy saving control method according to claim 1, characterized in that: Determining a target frequency of the compressor according to the temperature reaching time, and reducing the frequency of the compressor according to the target frequency of the compressor, including: determining a first target frequency of the compressor according to the temperature reaching time; determining whether a first target frequency of the compressor coincides with a frequency shielding point of the compressor; In response to determining that the first target frequency of the compressor coincides with the frequency shielding point of the compressor, the compressor is frequency-reduced according to the temperature-reaching time and the first target frequency.

4. The air conditioner energy saving control method according to claim 1, characterized in that: include: In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is less than or equal to a first exhaust temperature difference threshold, controlling the electronic expansion valve to increase the opening degree according to the first preset opening adjustment value at every second time interval, and controlling the indoor fan to maintain the current speed; In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the first exhaust temperature difference threshold and less than or equal to the second exhaust temperature difference threshold, controlling the electronic expansion valve to increase the opening degree according to the second preset opening adjustment value every second time interval, and controlling the indoor fan to maintain the current speed; In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the second exhaust temperature difference threshold and less than or equal to the third exhaust temperature difference threshold, controlling the electronic expansion valve to increase the opening degree according to the second preset opening adjustment value at every third time interval, and controlling the speed of the indoor fan according to the current indoor coil temperature and the inner coil critical temperature; In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is greater than or equal to the first exhaust temperature threshold, controlling the electronic expansion valve to increase the opening degree according to the first preset opening adjustment value at every second time interval; In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is less than the first exhaust temperature threshold and greater than or equal to the second exhaust temperature threshold, controlling the electronic expansion valve to increase the opening degree according to the second preset opening adjustment value at every second time interval; In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is less than the second exhaust temperature threshold and greater than or equal to the third exhaust temperature threshold, controlling the electronic expansion valve to increase the opening degree according to the second preset opening adjustment value at every third time interval, and controlling the speed of the indoor fan according to the current indoor coil temperature and the inner coil critical temperature; In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and the actual exhaust temperature of the compressor is less than the third exhaust temperature threshold, controlling the electronic expansion valve to maintain the current opening, and controlling the speed of the indoor fan according to the current indoor coil temperature and the inner coil critical temperature; In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the fourth exhaust temperature difference threshold and less than or equal to the fifth exhaust temperature difference threshold, controlling the electronic expansion valve to reduce the opening degree according to the second preset opening adjustment value at every third time interval, and controlling the speed of the indoor fan according to the current indoor coil temperature and the inner coil critical temperature; In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the fifth exhaust temperature difference threshold and less than or equal to the sixth exhaust temperature difference threshold, controlling the electronic expansion valve to reduce the opening degree according to the first preset opening adjustment value at every third time interval, and controlling the indoor fan to maintain the current speed; In response to determining that the temperature difference between the actual exhaust temperature of the compressor and the target exhaust temperature is greater than the sixth exhaust temperature difference threshold, controlling the electronic expansion valve to reduce the opening degree according to the first preset opening adjustment value at every second time interval, and controlling the indoor fan to maintain the current speed; The second time interval is smaller than the third time interval, and the first preset opening adjustment value is larger than the second preset opening adjustment value.

5. The air conditioner energy saving control method according to claim 1, characterized in that: include: The speed of the indoor fan is controlled according to the current indoor coil temperature and the critical temperature of the inner coil.

6. The air conditioner energy saving control method according to claim 4 or 5, characterized in that: The speed of the indoor fan is controlled according to the current indoor coil temperature and the critical temperature of the inner coil, including: Determine whether the current indoor coil temperature is greater than the critical temperature of the inner coil; In response to determining that the current indoor coil temperature is greater than the critical temperature of the indoor coil, controlling the indoor fan to reduce the speed by a preset speed reduction value at every first time interval; In response to determining that the current indoor coil temperature is less than or equal to the critical temperature of the indoor coil, the indoor fan is controlled to increase the speed by a preset speed increase value at every first time interval.

7. The air conditioner energy saving control method according to claim 6, characterized in that: Before determining whether the current indoor coil temperature is greater than the critical temperature of the inner coil, the air conditioner energy saving control method includes: In response to determining that the temperature difference between the current indoor temperature and the set temperature is less than or equal to a second ambient temperature difference threshold, controlling the indoor fan to operate at a first wind speed for a second preset time period; In response to determining that the temperature difference between the current indoor temperature and the set temperature is greater than a second ambient temperature difference threshold, controlling the indoor fan to operate at a second wind speed for a second preset time period; The second ambient temperature difference threshold is greater than the first ambient temperature difference threshold, and the first wind speed is greater than the second wind speed.

8. An energy-saving control device, characterized in that: include: a temperature reaching time calculation circuit, configured to determine the temperature reaching time according to the current indoor temperature and the set temperature in response to determining that the temperature difference between the current indoor temperature and the set temperature is less than or equal to a first ambient temperature difference threshold; The compressor frequency control circuit is configured to determine the target frequency of the compressor according to the temperature-reaching time, and to reduce the frequency of the compressor according to the target frequency of the compressor.

9. An air conditioner, characterized in that: include: a memory storing a computer program; A processor, wherein when the computer program is executed by the processor, the air conditioner energy-saving control method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in the air conditioner energy-saving control method according to any one of claims 1 to 7.

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