Control method of air conditioner and air conditioner

Abstract

The application discloses a control method of an air conditioner and the air conditioner, the air conditioner comprising an indoor unit coil and an electric heating element, and the control method comprising: detecting the temperature of the indoor unit coil and the ambient temperature of the indoor environment; obtaining a target power value according to the temperature of the indoor unit coil and the temperature difference between the temperature of the indoor unit coil and the ambient temperature; obtaining the maximum power value of the electric heating element, and selecting the operation gear of the electric heating element according to the target power value and the maximum power value. Thus, by setting the air conditioner, the operation gear of the electric heating element can be selected according to the temperature of the indoor unit coil, the temperature difference between the temperature of the indoor unit coil and the ambient temperature, and the maximum power value of the electric heating element, which is beneficial to reducing the energy loss of the air conditioner, and the adjustment frequency of the electric heating element in the operation process is relatively small, so that the air outlet temperature of the air conditioner is relatively stable, and the comfort of the user is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning, and in particular to a control method for an air conditioner and an air conditioner. Background Technology

[0002] The heating efficiency of the indoor unit's coil is limited. When the ambient temperature is low, the air conditioner takes a long time to heat up and the heating effect is poor. It needs to supplement the heat through an electric heating element to ensure sufficient heating power. However, in related technologies, once the electric heating element is turned on, its power cannot be adjusted; it will remain at maximum power, resulting in high energy consumption and room for improvement. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a control method for an air conditioner, which can reduce the energy consumption of the air conditioner by adjusting the operating level of the electric heating element.

[0004] According to an embodiment of the present invention, the control method for an air conditioner includes an indoor unit coil and an electric heating element. The control method includes: detecting the temperature of the indoor unit coil and the ambient temperature; obtaining a target power value based on the temperature of the indoor unit coil, the temperature difference between the indoor unit coil and the ambient temperature; obtaining the maximum power value of the electric heating element; and selecting the operating level of the electric heating element based on the target power value and the maximum power value.

[0005] According to the control method of the air conditioner of the present invention, by setting the air conditioner to select the operating level of the electric heating element based on the temperature of the indoor unit coil, the temperature difference between the indoor unit coil and the ambient temperature, and the maximum power value of the electric heating element, it is beneficial to reduce the energy loss of the air conditioner. Moreover, the electric heating element is adjusted less frequently during operation, which can make the air outlet temperature of the air conditioner more stable and improve the user's comfort.

[0006] According to some embodiments of the present invention, the method for controlling an air conditioner, wherein obtaining a target power value based on the temperature of the indoor unit coil and the temperature difference between the indoor unit coil and the ambient temperature, includes: obtaining a preliminary power value based on the temperature of the indoor unit coil; obtaining a supplementary coefficient based on the temperature difference between the indoor unit coil and the ambient temperature; and multiplying the preliminary power value by the supplementary coefficient to obtain the target power value. The above embodiments can obtain the target power value more conveniently and accurately, which is beneficial to improving the adjustment accuracy of the air conditioner.

[0007] According to some embodiments of the air conditioner control method of the present invention, the temperature of the indoor unit coil is divided into multiple temperature ranges, and each temperature range has a corresponding initial power value. The above embodiments can avoid frequent adjustments of the electric heating element caused by temperature changes in the indoor unit coil, thereby making the air outlet temperature of the air conditioner more stable and improving user comfort.

[0008] According to some embodiments of the air conditioner control method of the present invention, the temperature difference between the indoor unit coil and the ambient temperature has multiple temperature difference ranges, and each temperature difference range has a corresponding supplementary coefficient. The above embodiments can avoid frequent adjustments of the electric heating element caused by changes in temperature difference, thereby making the air outlet temperature of the air conditioner more stable and improving user comfort.

[0009] According to some embodiments of the air conditioner control method of the present invention, obtaining the maximum power value of the electric heating element includes: obtaining the actual voltage of the electric heating element; and obtaining the maximum power value of the electric heating element based on the actual voltage. The above embodiments can more accurately adjust the power of the electric heating element, thereby improving the airflow effect of the air conditioner.

[0010] According to some embodiments of the present invention, the method for controlling an air conditioner, wherein selecting the operating level of the electric heating element based on the target power value and the maximum power value includes: dividing the maximum power value into multiple operating levels; selecting the operating level containing an operating power value close to the target power value; wherein, when the target power value is between the operating power values ​​corresponding to two operating levels, the operating level corresponding to the larger operating power value is selected. The above embodiments can ensure that the air conditioner has sufficient heating efficiency, thereby reducing user waiting time and improving user comfort.

[0011] According to some embodiments of the air conditioner control method of the present invention, the maximum power value is divided into multiple operating levels at equal intervals. The above embodiments can achieve a reasonable arrangement of operating levels, which is beneficial to improving the heating effect of the air conditioner.

[0012] According to some embodiments of the present invention, the control method for an air conditioner includes a debugging phase. During the debugging phase, the electric heating element is controlled to operate at the specified operating level, and the operating level is increased by one level at set intervals. During the debugging phase, the temperature of the indoor unit coil, the ambient temperature, and the maximum power value of the electric heating element are acquired to select the operating level. The above embodiments can reduce the impact caused by the electric heating element during startup, thereby improving the operational stability of the air conditioner.

[0013] According to some embodiments of the air conditioner control method of the present invention, the set time ranges from 5s to 20s. The above embodiments allow the electric heating element sufficient buffer time and can, to a certain extent, ensure the heating efficiency of the air conditioner, thereby improving user comfort.

[0014] The present invention also proposes an air conditioner.

[0015] According to an embodiment of the present invention, the air conditioner is applicable to the control method described in any of the above embodiments. The air conditioner includes: a detection module, which is used to detect the temperature of the indoor unit coil and the ambient temperature, and obtain the maximum power value of the electric heating element; and a control module, which is used to obtain a target power value based on the temperature of the indoor unit coil and the temperature difference between the indoor unit coil and the ambient temperature, and select the operating level of the electric heating element based on the target power value and the maximum power value.

[0016] According to the air conditioner of the present invention, the power of the electric heating element can be adjusted during the heating process, which helps to reduce the loss of the air conditioner and makes the air outlet temperature of the air conditioner more stable, thus improving the user's comfort.

[0017] According to some embodiments of the air conditioner of the present invention, the control module includes: a plurality of relays, the plurality of relays being used to control the operating level of the electric heating element in stages. The above embodiments can conveniently control the switching of the operating levels of the electric heating element, improving the reliability of the air conditioner.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a flowchart of an air conditioner control method according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 2 This is a flowchart of an air conditioner control method according to an embodiment of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram illustrating the relationship between the preliminary power value and the indoor unit coil temperature according to an embodiment of the present invention;

[0023] Figure 4This is a schematic diagram illustrating the relationship between the supplementary coefficient and the temperature difference between the indoor unit coil temperature and the ambient temperature according to an embodiment of the present invention.

[0024] Figure 5 This is a flowchart of an air conditioner control method according to an embodiment of the present invention. Figure 3 ;

[0025] Figure 6 This is a schematic diagram illustrating the relationship between the actual voltage and the maximum power value according to an embodiment of the present invention;

[0026] Figure 7 This is a flowchart of an air conditioner control method according to an embodiment of the present invention. Figure 4 ;

[0027] Figure 8 This is a schematic diagram illustrating the relationship between the operating gear and the operating power value according to an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of an air conditioner according to an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram showing the connection between the control module and the electric heating element according to an embodiment of the present invention.

[0030] Figure label:

[0031] Air conditioner 100, external power supply 200.

[0032] Control module 1, relay 11, detection module 2, electric heating element 3. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Hereinafter, with reference to the accompanying drawings, a control method for an air conditioner according to an embodiment of the present invention will be described.

[0037] It should be noted that the air conditioner 100 includes an indoor unit coil and an electric heating element 3. The indoor unit coil carries refrigerant, and the electric heating element 3 can be a resistance wire. The indoor unit coil is used to cool the airflow in cooling mode so that the air conditioner 100 can blow out cold air; the indoor unit coil is also used to heat the airflow in heating mode so that the air conditioner 100 can blow out hot air. The electric heating element 3 can heat the airflow in heating mode to increase its temperature, thereby improving the heating efficiency of the air conditioner 100.

[0038] like Figure 1 As shown, the control method for an air conditioner according to an embodiment of the present invention includes:

[0039] S10: Detect the temperature of the indoor unit coil and the indoor ambient temperature. That is, when the electric heating element 3 is in the start-up state, the detection module 2 can use the temperature sensor to detect and obtain the temperature of the indoor unit coil and the indoor ambient temperature.

[0040] S20: Obtain the target power value based on the temperature of the indoor unit coil and the temperature difference between the indoor unit coil and the ambient temperature. That is, after the detection module 2 obtains the temperature of the indoor unit coil and the ambient temperature, it can transmit the temperature of the indoor unit coil and the ambient temperature to the control module 1. The control module 1 can subtract the temperature of the indoor unit coil from the ambient temperature to obtain the temperature difference, and then obtain the target power value of the electric heating element 3 based on the temperature of the indoor unit coil and the temperature difference.

[0041] It should be noted that the lower the temperature of the indoor unit coil, the higher the target power value of the electric heating element 3; the greater the temperature difference between the indoor unit coil temperature and the ambient temperature, the higher the target power value of the electric heating element 3.

[0042] S30: Obtain the maximum power value of the electric heating element 3, and select the operating level of the electric heating element 3 based on the target power value and the maximum power value. That is, after determining the target power value of the electric heating element 3, the detection module 2 can obtain the maximum power value of the electric heating element 3 and transmit the maximum power value to the control module 1. The control module 1 divides the operating levels according to the maximum power value, and maps the target power value to the operating power corresponding to each operating level to select a suitable operating level, and then controls the electric heating element 3 to operate at that operating level.

[0043] According to the control method of the air conditioner of the present invention, by setting the air conditioner 100 to select the operating level of the electric heating element 3 according to the temperature of the indoor unit coil, the temperature difference between the indoor unit coil and the ambient temperature and the maximum power value of the electric heating element 3, it is beneficial to reduce the energy loss of the air conditioner 100, and the electric heating element 3 is adjusted less frequently during operation, which can make the air outlet temperature of the air conditioner 100 more stable and improve the user's comfort.

[0044] In some embodiments of the present invention, such as Figure 2 As shown, the target power value is obtained based on the indoor unit coil temperature, the temperature difference between the indoor unit coil temperature and the ambient temperature, including:

[0045] S21: Obtain the preliminary power value based on the indoor unit coil temperature. In other words, after receiving the indoor unit coil temperature, control module 1 can directly obtain the preliminary power value based on the indoor unit coil temperature. It should be noted that the correspondence between the indoor unit coil temperature and the preliminary power value was preset by engineers based on experimental data, and will not be elaborated upon here.

[0046] S22: Obtain the supplementary coefficient based on the temperature difference between the indoor unit coil temperature and the ambient temperature. In other words, after receiving the ambient temperature, control module 1 subtracts the indoor unit coil temperature from the ambient temperature to obtain the temperature difference, and then directly calculates the supplementary coefficient based on this temperature difference. It should be noted that the correspondence between the temperature difference and the supplementary coefficient is preset by engineers based on experimental data, and will not be elaborated upon here.

[0047] S23: Multiply the preliminary power value by the supplementary coefficient to obtain the target power value. In other words, after the control module 1 obtains the preliminary power value and the supplementary coefficient, it can multiply the preliminary power value by the supplementary coefficient to obtain the target power value. This allows for a more convenient and accurate acquisition of the target power value, thus improving the adjustment accuracy of the air conditioner 100.

[0048] In some embodiments of the present invention, such as Figure 3 As shown, the temperature of the indoor unit coil can be divided into multiple temperature ranges, and each temperature range has a corresponding preliminary power value.

[0049] Specifically, the preset maximum power value can be set to P0. The preset maximum power value can be the maximum power value of the electric heating element 3 under normal pressure (such as 220V), and the temperature of the indoor unit coil can be divided into five temperature ranges. When the temperature of the indoor unit coil is less than T1, the temperature of the indoor unit coil is in the first temperature range, and the initial power value corresponding to the first temperature range is P0; when the temperature of the indoor unit coil is greater than or equal to T1 and less than T2, the temperature of the indoor unit coil is in the second temperature range, and the initial power value corresponding to the second temperature range is P1; when the temperature of the indoor unit coil is greater than or equal to T2 and less than T3, the temperature of the indoor unit coil is in the third temperature range, and the initial power value corresponding to the third temperature range is P2; when the temperature of the indoor unit coil is greater than or equal to T3 and less than T4, the temperature of the indoor unit coil is in the fourth temperature range, and the initial power value corresponding to the fourth temperature range is P3; when the temperature of the indoor unit coil is greater than or equal to T4, the temperature of the indoor unit coil is in the fifth temperature range, and the initial power value corresponding to the fifth temperature range is P4.

[0050] For example, T0 can be set to -40℃, T1 can be set to 20℃, T2 can be set to 30℃, T3 can be set to 40℃, T4 can be set to 50℃, and T5 can be set to 70℃; P1 can be set to 4 / 5P0 (that is, four-fifths of the preset maximum power value), P2 can be set to 3 / 5P0, P3 can be set to 2 / 5P0, and P4 can be set to 1 / 5P0.

[0051] The above settings can prevent the electric heating element 3 from being frequently adjusted due to temperature changes in the indoor unit coil, thereby making the air outlet temperature of the air conditioner 100 more stable and improving user comfort.

[0052] In some embodiments of the present invention, such as Figure 4 As shown, the temperature difference between the indoor unit coil and the ambient temperature has multiple temperature difference ranges, and each temperature difference range has a corresponding supplementary coefficient.

[0053] Specifically, the temperature difference between the indoor unit coil and the ambient temperature can be divided into five temperature difference ranges. When the temperature difference is less than C0, it is in the first temperature difference range, and the supplementary coefficient for the first temperature difference range is H0; when the temperature difference is greater than or equal to C0 and less than C1, it is in the second temperature difference range, and the supplementary coefficient for the second temperature difference range is H1; when the temperature difference is greater than or equal to C1 and less than C2, it is in the third temperature difference range, and the supplementary coefficient for the third temperature difference range is H2; when the temperature difference is greater than or equal to C2 and less than C3, it is in the fourth temperature difference range, and the supplementary coefficient for the fourth temperature difference range is H3; when the temperature difference is greater than or equal to C3℃, it is in the fifth temperature difference range, and the supplementary coefficient for the fifth temperature difference range is H4.

[0054] For example, C0 can be set to 5℃, C1 can be set to 10℃, C2 can be set to 15℃, C3 can be set to 20℃, C4 can be set to 25℃, H0 can be set to 1, H1 can be set to 1.2, H2 can be set to 1.3, H3 can be set to 1.5, and H4 can be set to 1.7.

[0055] The above settings can prevent the electric heating element 3 from being frequently adjusted due to temperature differences, so as to make the air outlet temperature of the air conditioner 100 more stable and improve the user's comfort.

[0056] In some embodiments of the present invention, such as Figures 5-6 As shown, obtaining the maximum power value of the electric heating element 3 includes:

[0057] S31: Obtain the actual voltage of the electric heating element 3. That is, the detection module 2 can obtain the current voltage of the air conditioner 100 to obtain the actual voltage of the electric heating element 3.

[0058] S32: The maximum power value of the electric heating element is obtained based on the actual voltage. In other words, after the detection module 2 obtains the actual voltage of the electric heating element 3, the maximum power value of the electric heating element can be directly obtained based on the actual voltage. It should be noted that the correspondence between the actual voltage and the maximum power value is preset by engineers based on experimental data, and will not be elaborated further here. Therefore, the power of the electric heating element can be adjusted more accurately, improving the airflow effect of the air conditioner.

[0059] In some embodiments of the present invention, such as Figure 7 As shown, the operating level of the electric heating element 3 is selected based on the target power value and the maximum power value, including:

[0060] S3: Divide the operating levels according to the maximum power value. That is, after the control module 1 obtains the maximum power value of the electric heating element 3, it can divide the operating levels according to the maximum power value, and each operating level has a corresponding operating power.

[0061] S34: Select the operating power level that is close to the target power value; where, when the target power value is between the operating power values ​​corresponding to the two operating power levels, select the operating power level corresponding to the larger operating power value.

[0062] In other words, the target power value can be compared with the operating power values ​​corresponding to multiple operating levels one by one. The operating level with the closest operating power value to the target power value is selected. "Closest" here doesn't mean simply the closest; it just means the operating power value is close to the target power value. When there is only one operating level with a power value close to the target power, that operating level is directly selected. When the target power value lies between the operating power values ​​corresponding to two operating levels, the operating level corresponding to the larger operating power value is selected. This ensures that the air conditioner 100 has sufficient heating efficiency, reducing user waiting time and improving user comfort.

[0063] For example, the operating levels can be set to include a first operating level, a second operating level, and a third operating level. The first operating level corresponds to a first operating power value, the second operating level corresponds to a second operating power value, and the third operating level corresponds to a third operating power value. The first operating power value is less than the second operating power value, and the second operating power value is less than the third operating power value. Specifically, when the target power value is less than the first operating power value, the first operating level is selected; when the target power value is greater than the first operating power value and less than the second operating power value, the second operating level is selected; and when the target power value is greater than the third operating power value, the third operating level is selected.

[0064] In some embodiments of the present invention, the maximum power value can be divided into multiple operating levels at equal intervals, such as three operating levels, four operating levels, five operating levels, etc. For example, as shown... Figure 8 As shown, the maximum power value can be set to P, and the maximum power value can be divided into five operating levels at equal intervals. The operating power corresponding to the five operating levels are 1 / 5P, 2 / 5P, 3 / 5P, 4 / 5P, and P, respectively. This allows for a reasonable arrangement of the operating levels, which helps to improve the heating effect of the air conditioner 100.

[0065] Of course, the present invention is not limited to this; the maximum power value can also be divided into multiple operating levels at non-equidistant intervals. For example, the maximum power value can be divided into five operating levels. When the maximum power value of the electric heating element 3 is 15KW, the operating power corresponding to the five operating levels are 1KW, 3KW, 5KW, 10KW, and 15KW, respectively. This allows for more flexible handling of different operating conditions.

[0066] In some embodiments of the present invention, the air conditioner 100 includes a debugging phase. During the debugging phase, the electric heating element 3 is controlled to run at a certain operating level, and the operating level is increased by one level at set intervals. During the debugging phase, the temperature of the indoor unit coil, the ambient temperature, and the maximum power value of the electric heating element 3 are obtained to select the operating level.

[0067] In other words, when the electric heating element 3 is initially started, the control module 1 can select the operating level based on the temperature of the indoor unit coil, the ambient temperature, and the maximum power value of the electric heating element 3. Once the operating level is determined, the air conditioner 100 can enter the debugging phase. During the debugging phase, the control module 1 controls the electric heating element 3 to run at the selected operating level, and at set intervals, it increases the operating level by one level until the electric heating element 3 runs at the selected operating level, at which point the air conditioner 100 exits the debugging phase. During the debugging phase, the temperature of the indoor unit coil, the ambient temperature, and the maximum power value of the electric heating element 3 can be continuously acquired to select the operating level in real time.

[0068] For example, the operating levels include a first operating level, a second operating level, a third operating level, a fourth operating level, and a fifth operating level, with gradually increasing operating power values. When the operating level is selected as the third operating level, the air conditioner 100 enters the commissioning phase. The controller controls the electric heating element 3 to operate at the first operating level. After a set interval, the electric heating element 3 adjusts to the second operating level. After another set interval, the electric heating element 3 adjusts to the third operating level, and the air conditioner 100 exits the commissioning phase and operates stably. During the process of the electric heating element 3 switching from the first operating level to the third operating level, if the operating level is reselected as the fifth operating level, the electric heating element 3 can be controlled to adjust to the fifth operating level. After reaching the fifth operating level, the air conditioner 100 exits the commissioning phase and operates stably. This process continues in the same manner, without further elaboration. This reduces the impact caused by the electric heating element 3 during startup, thus improving the operational stability of the air conditioner 100.

[0069] In some embodiments of the present invention, the set time can be in the range of 5s-20s, for example, the set time can be 5s, 8s, 10s, 12s, 15s, 18s, 20s, etc. This allows the electric heating element 3 to have sufficient buffer time and can, to a certain extent, ensure the heating efficiency of the air conditioner 100, thereby improving user comfort.

[0070] The present invention also proposes an air conditioner 100.

[0071] like Figure 9 As shown, according to an embodiment of the present invention, the air conditioner 100 is applicable to the control method of any of the above embodiments. The air conditioner 100 includes: a detection module 2 and a control module 1. The detection module 2 is used to detect the temperature of the indoor unit coil and the ambient temperature, and obtain the maximum power value of the electric heating element 3. The control module 1 is used to obtain a target power value based on the temperature of the indoor unit coil and the temperature difference between the indoor unit coil and the ambient temperature, and select the operating level of the electric heating element 3 based on the target power value and the maximum power value.

[0072] According to the embodiment of the present invention, the power of the electric heating element 3 can be adjusted during the heating process, which helps to reduce the loss of the air conditioner 100 and makes the air outlet temperature of the air conditioner 100 more stable, which helps to improve the user's comfort.

[0073] In some embodiments of the present invention, the control module 1 includes a plurality of relays 11, which are used to control the operating level of the electric heating element 3 in stages.

[0074] For example, refer to Figure 10 As shown, the control module 1 is electrically connected to the external power supply 200. The control module 1 includes multiple relays 11, which are selectively electrically connected to the electric heating element 3. The operating level of the electric heating element 3 can be adjusted by adjusting the number of relays 11 electrically connected to the electric heating element 3.

[0075] For example, five relays 11 can be configured, and the operating levels include a first operating level, a second operating level, a third operating level, a fourth operating level, and a fifth operating level, with gradually increasing operating power values. When one relay 11 is electrically connected to the electric heating element 3, the electric heating element 3 operates at the first operating level; when two relays 11 are electrically connected to the electric heating element 3, the electric heating element 3 operates at the second operating level; and so on. This allows for convenient control of the electric heating element 3 to switch operating levels, improving the reliability of the air conditioner 100.

[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner includes an indoor unit coil and an electric heating element, and the control method includes: The temperature of the indoor unit coil and the indoor ambient temperature are detected; The target power value is obtained based on the temperature of the indoor unit coil, the temperature difference between the indoor unit coil and the ambient temperature; Obtain the maximum power value of the electric heating element, and select the operating level of the electric heating element based on the target power value and the maximum power value.

2. The control method for an air conditioner according to claim 1, characterized in that, The step of obtaining the target power value based on the temperature of the indoor unit coil and the temperature difference between the indoor unit coil and the ambient temperature includes: A preliminary power value is obtained based on the temperature of the indoor unit's coil. The supplementary coefficient is obtained based on the temperature difference between the indoor unit coil temperature and the ambient temperature; The target power value is obtained by multiplying the preliminary power value by the supplementary coefficient.

3. The control method for an air conditioner according to claim 2, characterized in that, The temperature of the indoor unit coil is divided into multiple temperature ranges, and each temperature range has a corresponding preliminary power value.

4. The control method for an air conditioner according to claim 2, characterized in that, The temperature difference between the indoor unit coil and the ambient temperature has multiple temperature difference ranges, and each temperature difference range has a corresponding supplementary coefficient.

5. The control method for an air conditioner according to claim 1, characterized in that, Obtaining the maximum power value of the electric heating element includes: Obtain the actual voltage of the electric heating element; The maximum power value of the electric heating element is obtained based on the actual voltage.

6. The control method for an air conditioner according to claim 1, characterized in that, The step of selecting the operating level of the electric heating element based on the target power value and the maximum power value includes: The operating levels are divided according to the maximum power value; Select the operating power level that is close to the target power value; Specifically, when the target power value is between the operating power values ​​corresponding to the two operating gears, the operating gear corresponding to the larger operating power value is selected.

7. The control method for an air conditioner according to claim 6, characterized in that, The maximum power value is divided into multiple operating gears at equal intervals.

8. The control method for an air conditioner according to claim 1, characterized in that, The air conditioner includes a commissioning phase, during which the electric heating element is controlled to run at the operating level, and the operating level is increased by one level at set intervals. During the commissioning phase, the temperature of the indoor unit coil, the ambient temperature, and the maximum power value of the electric heating element are obtained in order to select the operating level.

9. The control method for an air conditioner according to claim 8, characterized in that, The set time range is 5s-20s.

10. An air conditioner (100), characterized in that, The air conditioner (100) is compatible with the control method according to any one of claims 1-9, and the air conditioner (100) comprises: The detection module (2) is used to detect the temperature of the indoor unit coil and the ambient temperature, and to obtain the maximum power value of the electric heating element; The control module (1) is used to obtain a target power value based on the temperature of the indoor unit coil, the temperature difference between the indoor unit coil and the ambient temperature, and to select the operating level of the electric heating element based on the target power value and the maximum power value.

11. The air conditioner (100) according to claim 10, characterized in that, The control module (1) includes: multiple relays (11), which are used to control the operating level of the electric heating element in stages.

Images