Variable-frequency air conditioner and its control method

Abstract

The present invention provides a control method for a variable-frequency air conditioner, comprising: obtaining a start signal of the variable-frequency air conditioner; determining whether the indoor environmental temperature adjusted by the variable-frequency air conditioner reaches a set temperature; if so, obtaining the real-time frequency of the variable-frequency air conditioner and calculating the power savings when the variable-frequency air conditioner operates at the real-time frequency; and outputting the power savings. By using the above method, the variable-frequency air conditioner can intuitively display the power savings during the operation process, enabling the user to feel the power-saving situation of the variable-frequency air conditioner in real time, enhancing the understanding and recognition of the performance of the variable-frequency air conditioner, and also facilitating the user to adjust the variable-frequency air conditioner to a better operating state.

Description

Technical Field

[0001] The present invention relates to air conditioning equipment, and particularly to a variable-frequency air conditioner and its control method. Background Art

[0002] A variable-frequency air conditioner uses an inverter to control and adjust the rotational speed of a compressor so that it is in a better rotational speed state, thereby improving the energy efficiency ratio and achieving the purpose of saving electricity.

[0003] The inventors have recognized that when a variable-frequency air conditioner is operating, users cannot intuitively feel the power-saving situation of the variable-frequency air conditioner, which results in users lacking an understanding of the performance of the variable-frequency air conditioner.

[0004] The above information disclosed in this background art is only used to increase the understanding of the background art of the present application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0005] An object of the present invention is to overcome at least one technical defect in the prior art and provide a variable-frequency air conditioner and its control method.

[0006] A further object of the present invention is to intuitively display the power-saving amount of the variable-frequency air conditioner, enabling users to feel the power-saving situation of the variable-frequency air conditioner in real time and enhancing the understanding and recognition of the performance of the variable-frequency air conditioner.

[0007] Another further object of the present invention is to improve the calculation accuracy of the power-saving amount of the variable-frequency air conditioner.

[0008] Yet another further object of the present invention is to cause the variable-frequency air conditioner to output a prompt signal when its operating performance is poor, so as to remind users to take remedial measures in a timely manner.

[0009] In particular, according to one aspect of the present invention, there is provided a control method for a variable-frequency air conditioner, including:

[0010] Obtaining a start signal of the variable-frequency air conditioner;

[0011] Judging whether the indoor environmental temperature adjusted by the variable-frequency air conditioner reaches a set temperature;

[0012] If it reaches, obtaining the real-time frequency of the variable-frequency air conditioner and calculating the power-saving amount when the variable-frequency air conditioner operates at the real-time frequency;

[0013] Outputting the power-saving amount.

[0014] Optionally, the step of calculating the power-saving amount when the variable-frequency air conditioner operates at the real-time frequency includes:

[0015] Obtain the operating mode of the variable-frequency air conditioner, and determine the target frequency during the process that the variable-frequency air conditioner operates in the operating mode and adjusts the indoor environmental temperature to the set temperature;

[0016] Calculate the power savings according to the real-time frequency and the target frequency.

[0017] Optionally, there are multiple preset operating modes, and each operating mode is correspondingly provided with multiple preset frequencies;

[0018] The steps of determining the target frequency during the process that the variable-frequency air conditioner operates in the operating mode and adjusts the indoor environmental temperature to the set temperature include:

[0019] Obtain the outdoor environmental temperature and the air supply speed during the process that the variable-frequency air conditioner operates in the operating mode and adjusts the indoor environmental temperature to the set temperature;

[0020] Select the target frequency from multiple preset frequencies according to the outdoor environmental temperature and the air supply speed.

[0021] Optionally, the steps of selecting the target frequency from multiple preset frequencies according to the outdoor environmental temperature and the air supply speed include:

[0022] Obtain a preset corresponding relationship, which stipulates multiple temperature ranges corresponding to each operating mode and preset frequencies when the variable-frequency air conditioner operates at multiple wind speed gears corresponding to each temperature range;

[0023] Determine the preset frequency corresponding to the temperature range to which the outdoor environmental temperature belongs and the wind speed gear to which the air supply speed belongs as the target frequency.

[0024] Optionally, the operating modes include a cooling mode and a heating mode; the wind speed gears include an ultra-low wind speed, a low wind speed, a medium wind speed, a high wind speed, and an ultra-high wind speed.

[0025] Optionally, the steps of calculating the power savings according to the real-time frequency and the target frequency include:

[0026] Calculate the difference between the real-time frequency and the target frequency;

[0027] Determine the power savings according to the ratio between the difference and the real-time frequency.

[0028] Optionally, the variable-frequency air conditioner has a display panel; and

[0029] The steps of outputting the power savings include:

[0030] Generate a display signal according to the power saving amount, and send the display signal to the display panel to cause the display panel to display the power saving amount.

[0031] Optionally, while outputting the power saving amount, it further includes:

[0032] Output the real-time frequency; and

[0033] The steps of outputting the power saving amount and the real-time frequency include:

[0034] Generate a display signal according to the power saving amount and the real-time frequency, and send the display signal to the display panel to cause the display panel to display the power saving amount and the real-time frequency.

[0035] Optionally, while or before and after outputting the power saving amount, it further includes:

[0036] Judge whether the power saving amount is lower than a preset threshold;

[0037] If so, output a prompt signal.

[0038] According to another aspect of the present invention, there is also provided a variable frequency air conditioner, including:

[0039] A processor and a memory, wherein the memory stores a machine-executable program, and when the machine-executable program is executed by the processor, it is used to implement the control method according to any one of the above.

[0040] Optionally, the variable frequency air conditioner further includes:

[0041] A display panel, which is data-connected to the processor and is used to display the power saving amount according to the display signal generated by the processor; the display panel has a digital display area and / or a graphic display area.

[0042] The variable frequency air conditioner and its control method of the present invention, when the indoor environmental temperature adjusted by the variable frequency air conditioner reaches the set temperature, by obtaining the real-time frequency of the variable frequency air conditioner and calculating and outputting the power saving amount when the variable frequency air conditioner operates at the real-time frequency, the variable frequency air conditioner can intuitively display the power saving amount during the operation process, enabling the user to feel the power saving situation of the variable frequency air conditioner in real time, enhancing the understanding and recognition of the performance of the variable frequency air conditioner, and also facilitating the user to adjust the variable frequency air conditioner to a better operating state.

[0043] Further, for the variable-frequency air conditioner and its control method of the present invention, by obtaining the operating mode of the variable-frequency air conditioner and determining the target frequency when the variable-frequency air conditioner operates in the operating mode, and then calculating the power saving amount according to the real-time frequency and the target frequency, the power saving amount of the variable-frequency air conditioner can reflect the difference between the current operating frequency and the target frequency during the temperature adjustment process, thereby improving the calculation accuracy of the power saving amount of the variable-frequency air conditioner. When the user believes that the power saving amount of the variable-frequency air conditioner is low and the power consumption is too high, the operating mode of the variable-frequency air conditioner can be adjusted in a timely manner.

[0044] Further, for the variable-frequency air conditioner and its control method of the present invention, since the power saving amount can reflect the operating performance of the variable-frequency air conditioner, when the power saving amount is lower than the preset threshold, by outputting a prompt signal, the variable-frequency air conditioner can remind the user to take remedial measures in a timely manner when the operating performance is poor, thereby reducing or avoiding the variable-frequency air conditioner from continuously operating inefficiently in a high-power consumption state, which is beneficial to improving the reliability of the operating process of the variable-frequency air conditioner.

[0045] Those skilled in the art will understand the above and other objects, advantages and features of the present invention more clearly from the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings. Description of the Drawings

[0046] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0047] Figure 1 is a schematic block diagram of a variable-frequency air conditioner according to an embodiment of the present invention;

[0048] Figure 2 is a schematic diagram of a control method of a variable-frequency air conditioner according to an embodiment of the present invention;

[0049] Figure 3 is a schematic diagram of the display state of a display panel of a variable-frequency air conditioner according to an embodiment of the present invention;

[0050] Figure 4 is a schematic diagram of the display state of a display panel of a variable-frequency air conditioner according to another embodiment of the present invention;

[0051] Figure 5 is a control flowchart of a variable-frequency air conditioner according to an embodiment of the present invention. Detailed Embodiments

[0052] Reference will now be made in detail to embodiments of the present invention, one or more examples of which are illustrated in the accompanying drawings. Each of the embodiments provided is intended to explain the present invention, not to limit the present invention. In fact, various modifications and variations to the present invention will be apparent to those skilled in the art without departing from the scope or spirit of the present invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield yet another embodiment. Accordingly, the present invention is intended to cover such modifications and variations that come within the scope of the appended claims and their equivalents.

[0053] Reference is made below to Figures 1 to 5 describe the variable-frequency air conditioner 10 and its control method according to an embodiment of the present invention. In the description of the embodiments of the present invention, it should be understood that the meaning of the term "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. When a feature "comprises or includes" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features can be further included.

[0054] In the description of this embodiment, the descriptions referring to terms such as "one embodiment", "some embodiments", "some examples", "one example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The embodiments of the present invention first provide a variable-frequency air conditioner 10. Figure 1 is a schematic block diagram of a variable-frequency air conditioner 10 according to an embodiment of the present invention. The variable-frequency air conditioner 10 generally may include a processor 110 and a memory 120, and may further include an indoor unit and an outdoor unit. The indoor unit can be the indoor part of a split room air conditioner for adjusting indoor air, such as refrigeration / heating, dehumidification, introducing fresh air, etc. The indoor unit can be a floor-standing cabinet type or a wall-mounted type, but is not limited thereto. It should be understood that the embodiments of the present invention can be applied to many air-conditioning devices other than floor-standing cabinet types and wall-mounted types, such as window air conditioners, etc.

[0056] The indoor unit may include a housing and a display panel 200. The indoor unit may be the indoor unit of a variable-frequency air conditioner 10 that performs refrigeration / heating through a compression refrigeration cycle system, and it further includes a heat exchanger and a blower fan. The heat exchanger is disposed within the housing and is configured to exchange heat with the air flow passing through it under the action of the blower fan to form a heat exchange air flow, i.e., cold air or hot air. The display panel 200 is connected to the processor 110 for data and is configured to output the operating information of the variable-frequency air conditioner 10, such as the set temperature, the real-time frequency (of the compressor), and the power savings, etc. The compressor of the compression refrigeration cycle system is disposed within the outdoor unit.

[0057] The memory 120 and the processor 110 may form part of the main control board of the indoor unit. The memory 120 stores a machine-executable program 121, and when the machine-executable program 121 is executed by the processor 110, it is used to implement the control method of the variable-frequency air conditioner 10 in any of the following embodiments. The processor 110 may be a central processing unit (CPU), or a digital signal processing unit (DSP), etc. The memory 120 is used to store the program executed by the processor 110. The memory 120 may be any medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 120 may also be a combination of various memories 120. Since the machine-executable program 121 implements each process of the following method embodiments when executed by the processor 110 and can achieve the same technical effects, to avoid repetition, it will not be elaborated here.

[0058] Figure 2 It is a schematic diagram of the control method of the variable-frequency air conditioner 10 according to an embodiment of the present invention. The control method generally may include the following steps:

[0059] Step S202, obtain the start signal of the variable-frequency air conditioner 10. After the variable-frequency air conditioner 10 starts, the following steps S204 to S208 are executed. After the variable-frequency air conditioner 10 starts, it begins to adjust the indoor environmental temperature to adjust the indoor environmental temperature to the set temperature. Wherein, the set temperature refers to the temperature to which the indoor environmental temperature will be adjusted, which may be set by the user. Of course, it may also be automatically determined by the variable-frequency air conditioner 10 according to historical operation records.

[0060] Step S204, determine whether the indoor environmental temperature adjusted by the variable-frequency air conditioner 10 reaches the set temperature. If so, the following step S206 is executed. That is, when the indoor environmental temperature reaches the set temperature, the step of calculating and outputting the power savings when the variable-frequency air conditioner 10 operates at the real-time frequency is executed.

[0061] For example, the variable-frequency air conditioner 10 can pre-establish a data connection with a temperature detector disposed in the indoor environment. The temperature detector is used to detect the indoor environment temperature. By collecting the detection result of the temperature detector, the variable-frequency air conditioner 10 can obtain the indoor environment temperature.

[0062] Step S206: Obtain the real-time frequency of the variable-frequency air conditioner 10, and calculate the power savings when the variable-frequency air conditioner 10 operates at the real-time frequency. Herein, the real-time frequency of the variable-frequency air conditioner 10 refers to the real-time frequency of the compressor, which is determined according to the rotational speed of the compressor. For example, by collecting the real-time rotational speed of the compressor, the real-time frequency of the compressor can be determined. When the indoor environment temperature adjusted by the variable-frequency air conditioner 10 reaches the set temperature, the real-time frequency of the variable-frequency air conditioner 10 is the temperature-reaching frequency.

[0063] The power savings when the variable-frequency air conditioner 10 operates at the real-time frequency can refer to the power saved by the variable-frequency air conditioner 10 per unit time compared with an air conditioner in a non-variable-frequency state; or it can refer to the target frequency, that is, the highest frequency, during the process of the variable-frequency air conditioner 10 adjusting the indoor environment temperature to the set temperature.

[0064] Step S208: Output the power savings. That is, after calculating the power savings when the variable-frequency air conditioner 10 operates at the real-time frequency, display the power savings to the user and / or the manufacturer.

[0065] For example, the information including the power savings can be sent to a user terminal data-connected to the main control board of the variable-frequency air conditioner 10, and / or sent to a specified data processing site, but is not limited thereto. The form of outputting the power savings can include but is not limited to graphics, text, sound, or voice.

[0066] Using the above method, when the indoor environment temperature adjusted by the variable-frequency air conditioner 10 reaches the set temperature, by obtaining the real-time frequency of the variable-frequency air conditioner 10, calculating, and outputting the power savings when the variable-frequency air conditioner 10 operates at the real-time frequency, the variable-frequency air conditioner 10 can intuitively display the power savings during the operation process, enabling the user to feel the power-saving situation of the variable-frequency air conditioner 10 in real time, enhancing the understanding and recognition of the performance of the variable-frequency air conditioner 10, and also facilitating the user to adjust the variable-frequency air conditioner 10 to a better operating state.

[0067] In some alternative embodiments, the steps of calculating the power savings of the variable-frequency air conditioner 10 when operating at the real-time frequency include: obtaining the operating mode of the variable-frequency air conditioner 10, and determining the target frequency during the process of the variable-frequency air conditioner 10 operating in the operating mode and adjusting the indoor environmental temperature to the set temperature, and calculating the power savings based on the real-time frequency and the target frequency. Among them, the above-mentioned target frequency refers to the target frequency during the process of the variable-frequency air conditioner 10 adjusting the indoor environmental temperature to the set temperature in this operating mode, that is, the highest frequency. The target frequency serves as a reference parameter for evaluating the power savings of the real-time frequency. The operating mode of the variable-frequency air conditioner 10 generally includes a cooling mode and a heating mode.

[0068] By obtaining the operating mode of the variable-frequency air conditioner 10, determining the target frequency when the variable-frequency air conditioner 10 is operating in the operating mode, and then calculating the power savings based on the real-time frequency and the target frequency, the power savings of the variable-frequency air conditioner 10 can reflect the difference between the current operating frequency and the target frequency during the temperature adjustment process, thereby improving the calculation accuracy of the power savings of the variable-frequency air conditioner 10. When the user believes that the power savings of the variable-frequency air conditioner 10 are low and the power consumption is too high, the operating mode of the variable-frequency air conditioner 10 can be adjusted in a timely manner.

[0069] In some alternative embodiments, there are multiple preset operating modes, and each operating mode is correspondingly provided with multiple preset frequencies. And the step of determining the target frequency during the process of the variable-frequency air conditioner 10 operating in the operating mode and adjusting the indoor environmental temperature to the set temperature includes: obtaining the outdoor environmental temperature and the air supply wind speed during the process of the variable-frequency air conditioner 10 operating in the operating mode and adjusting the indoor environmental temperature to the set temperature, and selecting the target frequency from the multiple preset frequencies according to the outdoor environmental temperature and the air supply wind speed.

[0070] That is to say, the target frequency is one of the multiple preset frequencies. For example, it can be determined as the target frequency according to the preset frequency corresponding to the outdoor environmental temperature and the air supply wind speed. The air supply wind speed of the variable-frequency air conditioner 10 refers to the rotational speed of the air supply fan. The outdoor environmental temperature refers to the temperature of the outdoor environment where the outdoor unit is located.

[0071] Using the above method to determine the target frequency of the variable-frequency air conditioner 10 when operating in the operating mode according to the outdoor environmental temperature and the air supply wind speed can improve the accuracy of the reference parameter for evaluating the power savings of the real-time frequency, thereby ensuring the calculation accuracy of the power savings.

[0072] In a further example, the step of selecting a target frequency from multiple preset frequencies according to the outdoor ambient temperature and the air supply wind speed includes: obtaining a preset correspondence relationship, which stipulates multiple temperature ranges corresponding to each operating mode and the preset frequencies when the variable frequency air conditioner 10 operates at multiple wind speed gears corresponding to each temperature range, and determining the preset frequency corresponding to the temperature range to which the outdoor ambient temperature belongs and the wind speed gear to which the air supply wind speed belongs as the target frequency.

[0073] The operating modes may include a cooling mode and a heating mode. The wind speed gears may include an ultra-low wind speed, a low wind speed, a medium wind speed, a high wind speed, and an ultra-high wind speed with gradually increasing wind speeds. Among them, the ultra-low wind speed may correspond to the rotational speed of the air supply fan in the silent state. The ultra-high wind speed may correspond to the rotational speed of the air supply fan in the strong air supply state.

[0074] The above correspondence relationship may be preset in tabular form, and this table may be named a preset correspondence table. Table 1 is the preset correspondence table of the variable frequency air conditioner 10 according to an embodiment of the present invention. In Table 1, T represents the outdoor ambient temperature, the target frequency is expressed as a percentage, and may refer to the ratio between the magnitude of the target frequency value and the rated frequency magnitude when the compressor operates at the rated rotational speed.

[0075] Table 1 Preset Correspondence Table of Variable Frequency Air Conditioner

[0076]

[0077] The power saving amount may be expressed as a percentage. In some alternative examples, the step of calculating the power saving amount according to the real-time frequency and the target frequency includes: calculating the difference between the real-time frequency and the target frequency, and determining the power saving amount according to the ratio between the difference and the real-time frequency. That is to say, the power saving amount reflects the percentage of the increased power consumption when the variable frequency air conditioner 10 is converted from the real-time frequency to the target frequency per unit time.

[0078] In some other alternative examples, the step of calculating the power saving amount according to the real-time frequency and the target frequency may be changed to include: calculating the difference between the real-time frequency and the target frequency, and determining the power saving amount according to the ratio between the difference and the target frequency. That is to say, the power saving amount in this example reflects the percentage of the reduced power consumption when the variable frequency air conditioner 10 is converted from the target frequency to the real-time frequency per unit time.

[0079] In an alternative example, the variable frequency air conditioner 10 has a display panel 200, which is data-connected to the processor 110 and is used to display the power saving amount according to the display signal generated by the processor 110. The display panel 200 has a digital display area and / or a graphic display area.

[0080] The step of outputting power saving includes: generating a display signal according to the power saving, and sending the display signal to the display panel 200, so that the display panel 200 displays the power saving. When the display panel 200 displays the power saving, a digital display scheme can be adopted and the power saving can be displayed in the digital display area, or a graphical display scheme can be adopted and the power saving can be displayed in the graphical display area. Of course, a display scheme combining digital and graphical display can also be adopted to display the power saving in the digital display area and the graphical display area respectively.

[0081] In another optional example, while outputting power saving, the control method further includes outputting real-time frequency. The step of outputting power saving and real-time frequency includes: generating a display signal according to the power saving and real-time frequency, and sending the display signal to the display panel 200, so that the display panel 200 displays the power saving and real-time frequency.

[0082] When the display panel 200 displays power saving and real-time frequency, a digital display solution may be used (for example, the numbers used to indicate power saving and the numbers used to indicate real-time frequency may be arranged side by side in the digital display area, and the font sizes may be set to be the same or different), or a graphical display solution may be used (for example, a bar graph or a circular bar graph may be used in the graphic display area to indicate power saving and real-time frequency). Of course, a display solution combining numbers and graphics may also be used (for example, a bar graph or a circular bar graph may be used in the graphic display area to indicate real-time frequency, and numbers may be used in the digital display area to indicate power saving).

[0083] When a bar graph or an annular column graph is used to indicate the real-time frequency, the value interval of the real-time frequency can be divided into multiple intervals, such as three intervals, four intervals, five intervals or six intervals. The graphic display area may include a data bar that can be lit corresponding to each interval. The value interval of the real-time frequency can be 0 to 100%, or it can be 0 to 120%. The real-time frequency of this embodiment is expressed in percentage, and can refer to the ratio between the size of the real-time frequency value and the rated frequency size when the compressor runs at the rated speed. After the real-time frequency of the variable frequency air conditioner 10 is obtained, the interval to which the real-time frequency belongs can be determined, and the data bar corresponding to the interval can be lit.

[0084] Figure 3 FIG. 2 is a schematic diagram of the display state of the display panel 200 of the variable frequency air conditioner 10 according to an embodiment of the present invention, and the figure exemplarily shows that the power saving is 26%. The display panel 200 can display the power saving and the real-time frequency at the same time. Figure 3As shown, the circular bar chart in the graphic display area is used to display the real-time frequency, and the digital display area inside the circular bar area is used to display the power saving. Optionally, when the value range of the real-time frequency is divided into five intervals, the value ranges of the real-time frequency in each interval are 0 to 30%, 30% to 40%, 40% to 70%, 70% to 90%, and 90% to 120% respectively.

[0085] Figure 4 FIG. 4 is a schematic diagram of the display state of the display panel 200 of the variable-frequency air conditioner 10 according to another embodiment of the present invention. In the figure, the power saving of 26% is exemplarily shown. The display panel 200 can simultaneously display the power saving and the real-time frequency. As Figure 4 shown, the bar chart in the graphic display area is used to display the real-time frequency, and the digital display area is used to display the power saving. Optionally, when the value range of the real-time frequency is divided into five intervals, the value ranges of the real-time frequency in each interval are 0 to 20%, 20% to 40%, 40% to 60%, 60% to 80%, and 80% to 100% respectively.

[0086] In some alternative embodiments, when outputting the power saving, or simultaneously or before and after that, it further includes: determining whether the power saving is lower than a preset threshold, and if so, outputting a prompt signal. In one example, the preset threshold can be 0.

[0087] The prompt signal can be sent to a user terminal data-connected to the main control board of the variable-frequency air conditioner 10, and / or sent to a specified data processing site, but not limited thereto. And the form of the prompt signal can include but is not limited to graphics, sound or voice. For example, the prompt signal can adopt a digital display scheme, or a graphical display scheme, and can be output to the display panel 200 simultaneously with the power saving.

[0088] Using the above method, since the power saving can reflect the operating performance of the variable-frequency air conditioner 10, when the power saving is lower than the preset threshold, by outputting a prompt signal, the variable-frequency air conditioner 10 can remind the user to take remedial measures in time when the operating performance is poor, such as adjusting the operating state of the variable-frequency air conditioner 10, thereby reducing or avoiding the variable-frequency air conditioner 10 from continuously operating inefficiently in a high-power consumption state, which is beneficial to improving the reliability of the operation process of the variable-frequency air conditioner 10.

[0089] In one example, if the target frequency is 24 Hz and the real-time frequency is 20 Hz, then the power saving = (24 - 20) / 20 * 100% = 20%; if the target frequency is 20 Hz and the real-time frequency is 20 Hz, then the power saving = (20 - 20) / 20 * 100% = 0. If the target frequency is 100 Hz and the real-time frequency is 20 Hz, then the power saving = (100 - 20) / 20 * 100% = 400%.

[0090] In one example, when the real-time frequency is expressed as a percentage, the frequency range within 0 to 20% can be the temperature-reaching frequency range, the frequency range within 20 to 40% can be the starting frequency range, the frequency range within 40% to 60% can be the oil-return frequency range, the frequency range within 60% to 80% can be the full-capacity refrigeration frequency range, the frequency range within 80% to 90% can be the full-capacity heating frequency range, and the frequency range within 90% to 100% can be the capacity upper limit frequency range.

[0091] In some alternative embodiments, higher technical effects can be achieved for the variable-frequency air conditioner 10 by further optimizing and configuring the above steps. The following details the control method of the variable-frequency air conditioner 10 in this embodiment in conjunction with the introduction of two alternative execution processes of this embodiment. This embodiment is only an example of the execution process. In specific implementation, the execution order and operating conditions of some steps can be modified according to specific implementation requirements.

[0092] Figure 5 It is a control flowchart of the variable-frequency air conditioner 10 according to an embodiment of the present invention. This control process generally may include the following steps:

[0093] Step S502, obtain the start signal of the variable-frequency air conditioner 10.

[0094] Step S504, determine whether the indoor environmental temperature adjusted by the variable-frequency air conditioner 10 reaches the set temperature. If so, execute step S506; if not, repeat step S504.

[0095] Step S506, obtain the real-time frequency of the variable-frequency air conditioner 10.

[0096] Step S508, obtain the operating mode of the variable-frequency air conditioner 10.

[0097] Step S510, obtain the outdoor environmental temperature and the air supply speed during the process of the variable-frequency air conditioner 10 operating in the operating mode and adjusting the indoor environmental temperature to the set temperature.

[0098] Step S512, obtain the preset corresponding relationship. The corresponding relationship stipulates multiple temperature ranges corresponding to each operating mode and the preset frequencies when the variable-frequency air conditioner 10 operates at multiple air speed gears corresponding to each temperature range.

[0099] Step S514, determine the target frequency as the preset frequency corresponding to the temperature range to which the outdoor environmental temperature belongs and the air speed gear to which the air supply speed belongs. The operating modes include the refrigeration mode and the heating mode; the air speed gears include the ultra-low air speed, low air speed, medium air speed, high air speed, and ultra-high air speed.

[0100] Step S516, calculate the difference between the real-time frequency and the target frequency.

[0101] Step S518, determine the power saving amount according to the ratio between the difference and the real-time frequency.

[0102] Step S520, generate a display signal according to the power saving amount and the real-time frequency.

[0103] Step S522, send the display signal to the display panel 200, so that the display panel 200 displays the power saving amount and the real-time frequency.

[0104] Step S524, determine whether the power saving amount is lower than a preset threshold. If so, execute step S526; if not, execute step S506.

[0105] Step S526, output a prompt signal.

[0106] For the variable-frequency air conditioner 10 and its control method of the present invention, when the indoor environmental temperature adjusted by the variable-frequency air conditioner 10 reaches the set temperature, by obtaining the real-time frequency of the variable-frequency air conditioner 10 and calculating and outputting the power saving amount when the variable-frequency air conditioner 10 operates at the real-time frequency, the variable-frequency air conditioner 10 can intuitively display the power saving amount during the operation process, enabling the user to feel the power saving situation of the variable-frequency air conditioner 10 in real time, enhancing the understanding and recognition of the performance of the variable-frequency air conditioner 10, and also facilitating the user to adjust the variable-frequency air conditioner 10 to a better operating state.

[0107] At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present invention have been shown and described in detail herein, still, without departing from the spirit and scope of the present invention, many other variations or modifications that conform to the principles of the present invention can be directly determined or derived based on the content disclosed in the present invention. Therefore, the scope of the present invention should be understood and determined to cover all these other variations or modifications.

Claims

1. A control method for a variable-frequency air conditioner, comprising: Obtaining a start signal of the variable-frequency air conditioner; Judging whether the indoor environmental temperature adjusted by the variable-frequency air conditioner reaches a set temperature; If it reaches, obtaining the real-time frequency of the variable-frequency air conditioner and calculating the power savings when the variable-frequency air conditioner operates at the real-time frequency; Outputting the power savings; The step of calculating the power savings when the variable-frequency air conditioner operates at the real-time frequency includes: Obtaining the operation mode of the variable-frequency air conditioner and determining the target frequency during the process of the variable-frequency air conditioner operating in the operation mode and adjusting the indoor environmental temperature to the set temperature; Calculating the power savings according to the real-time frequency and the target frequency; There are multiple preset operation modes, and each operation mode is correspondingly provided with multiple preset frequencies; The step of determining the target frequency during the process of the variable-frequency air conditioner operating in the operation mode and adjusting the indoor environmental temperature to the set temperature includes: Obtaining the outdoor environmental temperature and the air supply speed during the process of the variable-frequency air conditioner operating in the operation mode and adjusting the indoor environmental temperature to the set temperature; Selecting the target frequency from multiple preset frequencies according to the outdoor environmental temperature and the air supply speed.

2. The control method according to claim 1, wherein The step of selecting the target frequency from multiple preset frequencies according to the outdoor environmental temperature and the air supply speed includes: Obtaining a preset corresponding relationship, which stipulates multiple temperature ranges corresponding to each operation mode and preset frequencies when the variable-frequency air conditioner operates at multiple wind speed gears corresponding to each temperature range; Determining the preset frequency corresponding to the temperature range to which the outdoor environmental temperature belongs and the wind speed gear to which the air supply speed belongs as the target frequency.

3. The control method according to claim 2, wherein The operation modes include a refrigeration mode and a heating mode; the wind speed gears include an ultra-low wind speed, a low wind speed, a medium wind speed, a high wind speed, and an ultra-high wind speed.

4. The control method according to claim 1, wherein The step of calculating the power savings according to the real-time frequency and the target frequency includes: Calculating the difference between the real-time frequency and the target frequency; Determining the power savings according to the ratio between the difference and the real-time frequency.

5. The control method according to claim 1, wherein The variable-frequency air conditioner has a display panel; And The step of outputting the power savings includes: Generating a display signal according to the power savings and sending the display signal to the display panel to make the display panel display the power savings.

6. According to the control method of claim 5, while outputting the power savings, it further includes: Outputting the real-time frequency; And The steps of outputting the power savings and the real-time frequency include: Generating a display signal according to the power savings and the real-time frequency and sending the display signal to the display panel to make the display panel display the power savings and the real-time frequency.

7. According to the control method described in claim 1, when outputting the power savings or before and after that, it further includes: Determining whether the power savings is lower than a preset threshold; If so, outputting a prompt signal.

8. A variable frequency air conditioner, comprising: A processor and a memory, wherein the memory stores a machine-executable program, and when the machine-executable program is executed by the processor, it is used to implement the control method according to any one of claims 1-7.

9. According to the variable frequency air conditioner described in claim 8, it further includes: A display panel, which is data-connected to the processor and is used to display the power savings according to the display signal generated by the processor; The display panel has a digital display area and / or a graphic display area.

Images