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

Abstract

Embodiments of the present application provide an air conditioner energy-saving control method and device, an air conditioner and a computer readable storage medium. The air conditioner energy-saving control method comprises: in response to determining that a temperature difference between a current indoor temperature and a 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 a compressor according to the temperature reaching time, and adjusting the frequency of 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, in particular to an air conditioner energy-saving control method and device, an air conditioner and a computer readable storage medium. BACKGROUND

[0002] In the related art, when the frequency of the compressor is controlled, the frequency of the compressor needs to be repeatedly adjusted according to the response result of the frequency adjustment of the inner loop temperature; the above adjustment method has large hysteresis, which easily leads to excessive dehumidification and temperature overshoot, reduces the use comfort, and causes energy waste. SUMMARY

[0003] The air conditioner energy-saving control method and device, the air conditioner and the computer readable storage medium provided by the embodiments of the present application can improve the timeliness of the frequency adjustment of the compressor, and thus improve the use comfort and the energy-saving effect.

[0004] In a first aspect, the embodiments of the present application provide an air conditioner energy-saving control method, which comprises: in response to determining that a temperature difference between a current indoor temperature and a set temperature is less than or equal to a first environmental temperature difference threshold, determining a temperature reaching time according to the current indoor temperature and the set temperature; determining a target frequency of a compressor according to the temperature reaching time, and performing frequency reduction adjustment on the compressor according to the target frequency of the compressor.

[0005] In some embodiments, determining a predicted temperature reaching time according to the current indoor temperature and the set temperature comprises: controlling the air conditioner to run at a current running parameter for a first preset time length; determining an actual indoor temperature variation curve according to indoor temperature sampling data in the first preset time length and an indoor temperature standard variation curve; and determining a temperature reaching time according to the current indoor temperature, the set temperature and the actual indoor temperature variation curve.

[0006] In some embodiments, determining a target frequency of a compressor according to the temperature reaching time, and performing frequency reduction adjustment on the compressor according to the target frequency of the compressor comprises: determining a first target frequency of the compressor according to the temperature reaching time; determining whether the first target frequency of the compressor coincides with a frequency shielding point of the compressor; and in response to determining that the first target frequency of the compressor coincides with the frequency shielding point of the compressor, performing frequency reduction adjustment on the compressor according to the temperature reaching time and the first target frequency.

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

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

[0009] In some embodiments, the method of controlling the rotating speed of the indoor fan according to the current indoor coil temperature and the indoor coil critical temperature comprises: determining whether the current indoor coil temperature is greater than the indoor coil critical temperature; in response to determining that the current indoor coil temperature is greater than the indoor coil critical temperature, controlling the indoor fan to decrease the rotating speed by a preset rotating speed decrease value every first time interval; in response to determining that the current indoor coil temperature is less than or equal to the indoor coil critical temperature, controlling the indoor fan to increase the rotating speed by a preset rotating speed increase value every first time interval.

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

[0011] In a second aspect, the embodiments of the present application provide an energy-saving control device, comprising: a temperature reaching time calculation circuit configured to determine a temperature reaching time according to a current indoor temperature and a 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 environment temperature difference threshold; and a compressor frequency control circuit configured to determine a target frequency of a compressor according to the temperature reaching time, and to perform frequency reduction adjustment on the compressor according to the target frequency of the compressor.

[0012] In a third aspect, the embodiments of the present application provide an air conditioner, comprising a memory storing a computer program; and a processor, which implements the air conditioner energy-saving control method according to any one of the above embodiments when executing the computer program.

[0013] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium, which stores a computer program, and the computer program is loaded by a processor to execute the steps of the air conditioner energy-saving control method described above.

[0014] The air conditioner energy-saving control method provided by the embodiments of the present application can estimate the temperature reaching time according to 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 environmental temperature difference threshold, and then determine the target frequency of the compressor according to the temperature reaching time, 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 can avoid the hysteresis problem of the control mode in the related art, improve the timeliness of the frequency adjustment of the compressor, and further improve the use comfort and energy-saving effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

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

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

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

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

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

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

[0022] Main element symbol explanation:

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

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

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

[0027] The use of "adapted to" or "configured to" in the present application means open and inclusive language that does not exclude devices adapted to or configured to perform additional tasks or steps. In addition, the use of "based on" means 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 those stated in practice.

[0028] In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation described as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, for purposes of explanation, specific details are set forth to provide a thorough understanding of the present application. It will be apparent to one skilled in the art, however, that the present application can be practiced without using these specific details. In other instances, well-known structures and processes are not elaborated in order not to obscure the description of the present application with unnecessary details. Thus, the present application is not intended to be limited by the embodiments shown, but is to be accorded with the widest scope consistent with the principles and features disclosed herein.

[0029] As shown in the first aspect, the embodiments of the present application provide an air conditioner energy-saving control method, which comprises S10-S20, can improve the timeliness of compressor frequency regulation, and further improve the use comfort and energy-saving effect. Figure 1

[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 environmental temperature difference threshold, determining the 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 manually input by the user to set, or automatically generated by the air conditioner 1 according to, for example, the user's use habits, current environmental information, and other operating conditions, to obtain a comfortable temperature environment. The first environmental temperature difference threshold can be pre-set in the air conditioner 1, which is used to judge the closeness 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 indicates that the current indoor temperature is relatively close to the set temperature, and the air conditioner 1 can be controlled for energy-saving; 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 indicates that the current indoor temperature deviates from the set temperature, and the air conditioner 1 can be controlled to continue running according to the conventional cooling / heating operating parameters.

[0032] Here, the temperature reaching time refers to the time that needs to be passed from the current time to reach the set temperature. According to the current indoor temperature and the set temperature to determine the temperature reaching time, 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 the target frequency of the compressor according to the temperature reaching time, and adjusting 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 pre-set in the air conditioner 1. In this way, the compressor frequency value corresponding to the temperature reaching time can be determined according to the temperature reaching time, and the compressor frequency value is taken as the target frequency of the compressor, and then the compressor is adjusted at a reduced frequency.

[0035] The air conditioner energy saving control method provided by the embodiments of the present application estimates the temperature reaching time according to 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 environmental temperature difference threshold, and then determines the target frequency of the compressor according to the temperature reaching time, and adjusts the compressor at a reduced frequency in advance according to the target frequency of the compressor. Compared with related technologies, the air conditioner energy saving control method provided by the embodiments of the present application can avoid the hysteresis problem existing in the control mode of related technologies, improve the timeliness of the compressor frequency adjustment, and thus improve the use comfort and energy saving effect.

[0036] The temperature reaching time calculation method can be determined according to actual needs, which is not limited by the embodiments of the present application. For example, Figure 2 As shown in some embodiments, S10 can include S11-S13 to more accurately estimate the temperature reaching time.

[0037] S11: Control the air conditioner 1 to run at the current running parameter for a first preset time length.

[0038] Here, the first preset time length can be pre-set in the control system of the air conditioner 1; the specific value of the first preset time length can be determined according to actual needs, which can be different values such as 5 minutes, and the embodiments of the present application are not limited thereto. When the temperature difference between the current indoor temperature and the set temperature is less than or equal to the first environmental temperature difference threshold, the air conditioner 1 can be controlled to continue running at the current running parameter from the time to the first preset time length.

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

[0040] The indoor temperature standard change curve can be pre-determined according to the historical running data and / or experimental data of the air conditioner 1, and pre-set in the control system of the air conditioner 1; here, the indoor temperature standard change curve represents the standard change state of the indoor temperature changing with time when the air conditioner 1 performs refrigeration / heating, and different specifications of the air conditioner 1 can have different indoor temperature standard change curves.

[0041] According to the indoor temperature sampling data in the first preset time length and the indoor temperature standard change curve, an indoor temperature actual change curve can be fitted and determined. The actual fitting algorithm can be determined according to actual needs, which is not limited in the embodiments of the present application. Compared with the indoor temperature standard change curve, the indoor temperature actual change curve is more matched with the actual use condition of the air conditioner 1, so as to more accurately represent the actual change state of the indoor temperature in the actual use environment over time when the air conditioner 1 performs refrigeration / heating.

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

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

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

[0045] As shown in FIG. 1, Figure 3 S20 can include S21-S23 in some embodiments.

[0046] S21: determining the 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 temperature reaching time can be determined according to actual needs, which is not limited in the embodiments of the present application. In some embodiments, the first target frequency of the compressor and the temperature reaching time are negatively correlated; if the temperature reaching time is relatively long, the first target frequency of the compressor is relatively low; if the temperature reaching time 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 established in advance according to the historical running data and / or experimental data of the air conditioner 1; then, the compressor frequency value corresponding to the temperature reaching time can be determined according to the temperature reaching time, and the compressor frequency value is taken as the first target frequency of the compressor. In other examples, S21 can include S211-S212.

[0049] S211: determining the time interval in which the temperature reaching time is located.

[0050] S212: determining the compressor frequency value corresponding to the above-mentioned time interval according to the time interval, and taking the compressor frequency value as the first target frequency of the compressor.

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

[0052] When it is determined that the temperature reaching time is located in the first time interval, the compressor frequency value corresponding to the first time interval can be taken as the first target frequency of the compressor; when it is determined that the temperature reaching time is located in the second time interval, the compressor frequency value corresponding to the second time interval can be taken 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 frequency shielding points can be one or more, and embodiments of the present application do not limit this.

[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 modes can be pre-set for different temperature reaching times. When facing the frequency shielding point obstacle, the corresponding frequency shielding point processing mode can be determined according to the temperature reaching time, and then the frequency-reduction adjustment strategy of the compressor is determined according to the corresponding frequency shielding point processing mode and the first target frequency, the frequency shielding point is avoided on the premise of ensuring better comfort, and the frequency-reduction control of the compressor is realized.

[0056] As shown in FIG. 23, exemplarily, S23 can include S231-S233. Figure 4

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

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

[0059] S233: The compressor is frequency-reduced according to the frequency-reduction adjustment strategy of the compressor.

[0060] ​Here, a plurality of time intervals can be set in advance in the control system of the air conditioner 1, and a corresponding frequency shielding point processing mode can be set for each time interval. For example, the first time interval and the second time interval described above can be set.

[0061] For example, when it is determined that the temperature reaching time is located in 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, the second target frequency being 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 length and then reduced to a third target frequency, the third target frequency being less than the first target frequency; if the second target frequency does not coincide with the frequency shielding point of the compressor, the compressor is controlled to be reduced from the current operating frequency to the second target frequency.

[0062] For example, when it is determined that the temperature reaching time is located in 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, the second target frequency being 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 length and then reduced to a third target frequency, the third target frequency being less than the first target frequency; if the second target frequency does not coincide with the frequency shielding point of the compressor, the compressor is controlled to be reduced from the current operating frequency to the second target frequency.

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

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

[0065] The specific value of the first discharge temperature difference threshold can be determined according to actual needs, which is not limited in the embodiments of the present application. In some examples, the first discharge temperature difference threshold is greater than the first environmental temperature difference threshold; for example, the first discharge temperature difference threshold can be 4°C, and the first environmental temperature difference threshold can be 2°C. The specific value of the second time interval can be determined according to actual needs, which is not limited in the embodiments of the present application; in some examples, the second time interval can be 20 seconds. The specific value of the first preset opening degree adjustment value can be determined according to actual needs, which is not limited in the embodiments of the present application. For example, the opening degree of the electronic expansion valve can be increased by 4p every 20 seconds, so that the opening degree of the electronic expansion valve is increased progressively.

[0066] S32: in response to determining that the temperature difference between the actual discharge temperature of the compressor and the target discharge temperature is greater than the first discharge temperature difference threshold and less than or equal to the second discharge temperature difference threshold, controlling the electronic expansion valve to increase the opening degree by a second preset opening degree adjustment value every second time interval, and controlling the indoor fan to maintain the current rotating speed.

[0067] Here, the first preset opening degree adjustment value is greater than the second preset opening degree adjustment value. The specific value of the second preset opening degree adjustment value can be determined according to actual needs, which is not limited in the embodiments of the present application. For example, the opening degree of the electronic expansion valve can be controlled to increase by 2p every 20 seconds, so that the opening degree of the electronic expansion valve is increased progressively.

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

[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, which is not limited in the embodiments of the present application; in some examples, the third time interval can be 30 seconds. For example, the opening degree of the electronic expansion valve can be controlled to increase by 2p every 30 seconds, so that the opening degree of the electronic expansion valve is increased progressively.

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

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

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

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

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

[0075] S39: In response to determining that the temperature difference between the actual discharge temperature of the compressor and the target discharge temperature is greater than the fifth discharge temperature difference threshold and less than or equal to the sixth discharge temperature difference threshold, controlling the electronic expansion valve to decrease the opening degree by the first preset opening degree adjustment value every third time interval, and maintaining the current rotation speed of the indoor fan. For example, the opening degree of the electronic expansion valve can be decreased by 4p every 30 seconds, so that the opening degree of the electronic expansion valve is gradually decreased, and the current rotation speed of the indoor fan is maintained during the process.

[0076] S310: In response to determining that the temperature difference between the actual discharge temperature of the compressor and the target discharge temperature is greater than the sixth discharge temperature difference threshold, controlling the electronic expansion valve to decrease the opening degree by the first preset opening degree adjustment value every second time interval, and maintaining the current rotation speed of the indoor fan.

[0077] By setting S31-S310, the gradual and small adjustment of the electronic expansion valve can be realized according to the range of the temperature difference between the actual discharge temperature of the compressor and the target discharge temperature, so that the opening degree of the electronic expansion valve gradually approaches the target opening degree, the fine control of the discharge temperature of the compressor is realized, the actual discharge temperature of the compressor and the target discharge temperature are more consistent, and the refrigeration / heating capacity of the compressor and the actual demand of the indoor are more matched, thereby improving the heat exchange comfort and energy saving effect. In addition, when the temperature difference between the actual discharge temperature of the compressor and the target discharge temperature is in a specific range, the rotation speed of the indoor fan can also be controlled, thereby further improving the comprehensiveness and perfection of the control process, so that the refrigeration / heating capacity of the compressor and the rotation speed of the indoor fan are synchronously and linkage adjusted, and the temperature regulation demand of the indoor is better met.

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

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

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

[0081] As shown in FIG. 1, in some examples, the above-mentioned "controlling the speed of the indoor fan according to the current indoor coil temperature and the indoor coil critical temperature" can include S41-S43. Figure 5

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

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

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

[0085] Here, the absolute values of the preset speed decrease value and the preset speed increase value can be the same or different, and the embodiments of the present application do not limit this.

[0086] By setting S41-S43, an appropriate control strategy can be accurately selected to accurately adjust and control the speed of the indoor fan, and the stepless adjustment of the speed of the indoor fan can be finely realized, so that the speed of the indoor fan gradually approaches the target speed in a gradual manner, ensuring that the air supply experience is more comfortable. Compared with the mode of only being able to jump between different wind levels in the related art, the air conditioner energy-saving control method provided by the embodiments of the present application can make the speed adjustment of the indoor fan more accurate, better balance the demand between the outlet air temperature and the air supply distance, and improve the comfort of indoor air supply.

[0087] Exemplarily, before S41, the air conditioner energy-saving control method can include S401-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 level for a second preset time length.

[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 level for a second preset time length.

[0090] ​The second environment temperature difference threshold is greater than the first environment temperature difference threshold, and the first wind level is greater than the second wind level. For example, the first wind level can be the highest wind level, and the second wind level can be the second highest wind level next to the highest wind level.

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

[0092] As shown in Figure 6 In a third aspect, the embodiments of the present application provide an air conditioner 1, which comprises a processor and a memory. The memory stores a computer program. When the computer program is executed by the processor, the 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 capability. The processor 10 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a ready-to-use programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the disclosed methods, steps and logic block diagrams 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 of X86 architecture or ARM architecture.

[0094] The memory 20 can be volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory can be read only memory (ROM), programmable read only memory (PROM), erasable programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as external cache. By way of example, and 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 (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SynchBurst Dynamic Random Access Memory (SLDRAM), and Direct Rambus Dynamic Random Access Memory (DRDRAM). It is noted that the memory 20 of the methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

[0095] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium, having stored thereon a computer program, the computer program being loaded by the processor 10 to execute the steps in the control method of any of the above embodiments.

[0096] By way of example, and not limitation, such computer-readable storage media can include volatile memory, non-volatile memory, flash memory, or memoiy cards, etc. It is to be appreciated that the computer-readable storage media described herein is represented as a single storage mechanism; however, this is not intended to be limiting. For example, it is to be understood that a person of ordinary skill in the art with access to the present disclosure will recognize that the storage media described herein can represent a plurality of storage mechanisms.

[0097] The above describes in detail the air conditioner energy-saving control method, device, air conditioner and computer readable storage medium provided by the embodiments of the present application. The specific examples are applied herein to describe the principles and implementation modes of the present application. The above embodiment descriptions are only used to help understand the method and core idea of the present application. Meanwhile, for those skilled in the art, the specific implementation modes and application ranges will be changed according to the idea of the present application. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. An energy-saving control method for an air conditioner, 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, the time to reach the set temperature is determined based on the current indoor temperature and the set temperature. The target frequency of the compressor is determined based on the time to reach the desired temperature, and the compressor is frequency-reduced based on the target frequency. Determine the target frequency of the compressor based on the temperature reaching time, and adjust the compressor frequency reduction according to the target frequency, including: The first target frequency of the compressor is determined based on the temperature reaching time. Determine whether the first target frequency of the compressor coincides with the 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; The compressor frequency is reduced based on the temperature reaching time and the first target frequency, including: Determine the time interval in which the temperature reaches the target value; The frequency shielding point processing method is determined according to the time interval, and the frequency reduction adjustment strategy of the compressor is determined according to the frequency shielding point processing method and the first target frequency. The compressor is frequency-reduced according to the compressor's frequency reduction regulation strategy.

2. The energy-saving control method for air conditioners according to claim 1, characterized in that, Determining the time to reach the set temperature based on the current indoor temperature and the set temperature includes: Control the air conditioner to operate at the current operating parameters for a first preset duration; Based on the indoor temperature sampling data within the first preset time period and the standard indoor temperature change curve, determine the actual indoor temperature change curve; The time to reach the set temperature is determined based on 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, include: In response to determining that the temperature difference between the actual exhaust temperature and the target exhaust temperature of the compressor is less than or equal to a first exhaust temperature difference threshold, the electronic expansion valve is controlled to increase its opening by a first preset opening adjustment value every second time interval, and the indoor fan is controlled to maintain its current speed. In response to determining that the temperature difference between the actual exhaust temperature and the target exhaust temperature of the compressor 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 its opening by a second preset opening adjustment value every second time interval, and the indoor fan is controlled to maintain its current speed. In response to determining that the temperature difference between the actual exhaust temperature and the target exhaust temperature of the compressor 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 its opening by 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. In response to determining that the temperature difference between the actual exhaust temperature and the target exhaust temperature of the compressor is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and that 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 its opening by the first preset opening adjustment value every second time interval. In response to determining that the temperature difference between the actual exhaust temperature and the target exhaust temperature of the compressor is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and that 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 its opening by the second preset opening adjustment value every second time interval. In response to determining that the temperature difference between the actual exhaust temperature and the target exhaust temperature of the compressor is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and that 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 its opening by 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. In response to determining that the temperature difference between the actual exhaust temperature and the target exhaust temperature of the compressor is greater than the third exhaust temperature difference threshold and less than or equal to the fourth exhaust temperature difference threshold, and that the actual exhaust temperature of the compressor is less than the third exhaust temperature threshold, the electronic expansion valve is controlled to maintain its current opening, 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 and the target exhaust temperature of the compressor 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 its opening by 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. In response to determining that the temperature difference between the actual exhaust temperature and the target exhaust temperature of the compressor 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 its opening by the first preset opening adjustment value every third time interval, and the indoor fan is controlled to maintain its current speed. In response to determining that the temperature difference between the actual exhaust temperature and the target exhaust temperature of the compressor is greater than the sixth exhaust temperature difference threshold, the electronic expansion valve is controlled to reduce its 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.

4. The energy-saving control method for air conditioners according to claim 1, characterized in that, include: The indoor fan speed is controlled based on the current indoor coil temperature and the critical temperature of the inner coil.

5. The air conditioner energy-saving control method according to claim 3 or 4, characterized in that, The indoor fan speed is controlled based on the current indoor coil temperature and the critical temperature of the inner coil, including: Determine if 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 inner coil, the indoor fan speed is reduced by a preset speed reduction value 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 coil, the indoor fan speed is increased by a preset speed increase value every first time interval.

6. The energy-saving control method for an air conditioner according to claim 5, characterized in that, Before determining whether the current indoor coil temperature is greater than the critical temperature of the indoor 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, the indoor fan is controlled to run at a first fan speed for a second preset duration. 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, the indoor fan is controlled to run at the second fan speed for the second preset duration. The second ambient temperature difference threshold is greater than the first ambient temperature difference threshold, and the first windshield is greater than the second windshield.

7. An energy-saving control device, characterized in that, include: The temperature reach time calculation circuit is configured to determine the temperature reach time based on 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 based on the temperature reaching time, and to adjust the compressor frequency by reducing the compressor frequency based on the target frequency of the compressor. Determine the target frequency of the compressor based on the temperature reaching time, and adjust the compressor frequency reduction according to the target frequency, including: The first target frequency of the compressor is determined based on the temperature reaching time. Determine whether the first target frequency of the compressor coincides with the 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; The compressor frequency is reduced based on the temperature reaching time and the first target frequency, including: Determine the time interval in which the temperature reaches the target value; The frequency shielding point processing method is determined according to the time interval, and the frequency reduction adjustment strategy of the compressor is determined according to the frequency shielding point processing method and the first target frequency. The compressor is frequency-reduced according to the compressor's frequency reduction regulation strategy.

8. An air conditioner, characterized in that, include: Memory, which stores computer programs; A processor, wherein the computer program, when executed by the processor, implements the air conditioner energy-saving control method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps of the air conditioner energy-saving control method according to any one of claims 1 to 6.

Images