Control method, control device, heat pump air conditioner and storage medium

Abstract

The invention discloses a control method, a control device, a heat pump air conditioner and a storage medium, and the control method comprises the steps that after it is determined that the heat pump air conditioner needs frequency reduction operation, the optimal operation frequency is determined according to the optimal energy efficiency frequency corresponding to the current environment temperature; the heat pump air conditioner is controlled to be subjected to frequency reduction step by step between the current operation frequency and the optimal operation frequency until the heat pump air conditioner meets the first condition, and frequency reduction is stopped or until the heat pump air conditioner is subjected to frequency reduction to the optimal operation frequency; and after the frequency of the heat pump air conditioner is reduced to the optimal operation frequency, if the heat pump air conditioner still cannot meet the first condition, the heat pump air conditioner is controlled to stop. The optimal operation frequency is used for replacing the traditional minimum operation frequency, so that when the frequency of the heat pump air conditioner is reduced to the minimum operation frequency, the heat pump air conditioner still has good energy efficiency performance, and more energy is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to a control method, a control device, a heat pump air conditioner and a storage medium. Background Art

[0002] Heat pump air conditioning uses solar energy resources stored in the surface soil, air and water as cold and heat sources. It has no combustion, no smoke, no waste, and no pollution. It is a clean and environmentally friendly technology that utilizes renewable resources. The heat pump system consists of four parts: heat pump unit, high-level energy transmission and distribution system, low-level heat source collection system and heat distribution system. The heat pump unit that uses outdoor air as the heat source (or heat sink) is called an air source heat pump unit, and the whole system is also called an air source heat pump air conditioning system.

[0003] In the prior art, in order to ensure that the heat pump air conditioner can operate reliably for a long time, it is usually operated at the minimum operating frequency under the current ambient temperature. However, its minimum operating frequency may not be the optimal energy efficiency point. The current minimum operating frequency may result in low operating efficiency and poor energy saving effect. Summary of the invention

[0004] The main purpose of the embodiments of the present invention is to provide a control method, a control device, a heat pump air conditioner and a storage medium, aiming to improve the technical problem in the prior art that the heat pump air conditioner operates at a minimum operating frequency at a corresponding ambient temperature and has low operating efficiency.

[0005] An embodiment of the present invention provides a control method, comprising:

[0006] Determine whether to turn on the oxygen generator based on the user's heart rate data;

[0007] After determining that the heat pump air conditioner needs to be operated at a reduced frequency, the optimal operating frequency is determined based on the optimal energy efficiency frequency corresponding to the current ambient temperature;

[0008] Controlling the heat pump air conditioner to reduce the frequency step by step between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner reduces the frequency to the optimal operating frequency;

[0009] After the heat pump air conditioner is reduced in frequency to the optimal operating frequency, if the heat pump air conditioner still fails to meet the first condition, the heat pump air conditioner is controlled to shut down.

[0010] In some embodiments of the present invention, determining the optimal operating frequency according to the best energy efficiency frequency corresponding to the current ambient temperature includes:

[0011] Determine the standard frequency and standard water outlet temperature corresponding to the ambient temperature according to the optimal energy efficiency frequency;

[0012] The optimal operating frequency is determined according to the standard frequency, the standard outlet water temperature, the actual outlet water temperature and the ambient temperature.

[0013] In some embodiments of the present invention, before determining the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature, the control method further includes:

[0014] According to the ambient temperature, determining a corresponding temperature range;

[0015] According to the temperature range, the corresponding optimal energy efficiency frequency is determined.

[0016] In some embodiments of the present invention, the control method further includes:

[0017] Determining whether the heat pump air conditioner needs to reduce frequency according to the actual water outlet temperature and the preset temperature;

[0018] If the actual outlet water temperature is lower than the preset temperature, it is determined that the heat pump air conditioner does not need to reduce the frequency;

[0019] If the actual outlet water temperature is greater than or equal to the preset temperature, it is determined that the heat pump air conditioner needs to be frequency-reduced.

[0020] In some embodiments of the present invention, the step of controlling the heat pump air conditioner to gradually reduce the frequency between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner reduces the frequency to the optimal operating frequency includes:

[0021] Based on the current operating frequency of the heat pump air conditioner, controlling the heat pump air conditioner to reduce the frequency once, and determining whether to continue reducing the frequency according to the first frequency after the heat pump air conditioner is reduced in frequency, the optimal operating frequency, the actual water outlet temperature and the preset temperature;

[0022] If the first frequency is greater than the optimal operating frequency, and the actual outlet water temperature is greater than the preset temperature, repeat the above steps to control the heat pump air conditioner to reduce the frequency until the actual outlet water temperature is less than or equal to the preset temperature, or until the first frequency is equal to the optimal operating frequency;

[0023] If the first frequency is greater than the optimal operating frequency and the actual outlet water temperature is less than or equal to the preset temperature, the frequency reduction is stopped and the current frequency operation is maintained.

[0024] In some embodiments of the present invention, after the heat pump air conditioner is reduced in frequency to the optimal operating frequency, if the heat pump air conditioner still fails to meet the first condition, controlling the heat pump air conditioner to shut down includes:

[0025] If the first frequency is equal to the optimal operating frequency, and the actual outlet water temperature is greater than the preset temperature, the heat pump air conditioner is controlled to shut down;

[0026] If the first frequency is equal to the optimal operating frequency, and the actual outlet water temperature is less than or equal to the preset temperature, the current frequency operation is maintained.

[0027] In some embodiments of the present invention, controlling the heat pump air conditioner to gradually reduce the frequency between the current operating frequency and the optimal operating frequency includes:

[0028] The step-by-step frequency reduction value of each step of the heat pump air conditioner is the same; or

[0029] The frequency reduction value of each stage of the step-by-step frequency reduction of the heat pump air conditioner is different.

[0030] In some embodiments of the present invention, a control device is further provided, comprising:

[0031] An acquisition module, in which a user acquires the ambient temperature of the environment in which the heat pump air conditioner is located, and is used to acquire the optimal energy efficiency frequency corresponding to the current ambient temperature of the heat pump air conditioner;

[0032] The calculation module determines the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature after determining that the heat pump air conditioner needs to be operated at a reduced frequency;

[0033] A control module is used to control the heat pump air conditioner to reduce the frequency step by step between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner is reduced to the optimal operating frequency; the control module is also used to control the heat pump air conditioner to shut down if the heat pump air conditioner still fails to meet the first condition after the heat pump air conditioner is reduced to the optimal operating frequency.

[0034] In some embodiments of the present invention, a heat pump air conditioner is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor is used to run the computer program in the memory to execute the steps in the above-mentioned control method.

[0035] In some embodiments of the present invention, a storage medium is further provided, wherein the storage medium stores a computer program, and the computer program is loaded and executed by a processor to execute the steps in the above control method.

[0036] An embodiment of the present invention provides a control method, device, heat pump air conditioner and storage medium. After determining that the heat pump air conditioner needs to be frequency-reduced, the control method first determines the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature; and controls the heat pump air conditioner to gradually reduce the frequency between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner is reduced to the optimal operating frequency; after the heat pump air conditioner is reduced to the optimal operating frequency and still fails to meet the first condition, the heat pump air conditioner is controlled to shut down; that is, the present invention uses the optimal operating frequency instead of the traditional minimum operating frequency, so that when the heat pump air conditioner is reduced to the minimum operating frequency, it has a better energy efficiency performance, thereby saving more energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0038] Figure 1 A schematic flow chart of a control method according to an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of the structure of a control device according to an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of the structure of a heat pump air conditioner according to an embodiment of the present invention;

[0041] Figure 4 A diagram showing the connection relationship of components of a heat pump air conditioner according to an embodiment of the present invention;

[0042] Figure 5 The energy efficiency and frequency table of one embodiment of the present invention.

[0043] Figure numerals: 10, control device; 11, four-way valve; 12, condenser; 13, throttling element; 14, plate heat exchanger; 15, water pump; 16, compressor; 21, ambient temperature sensor; 22, water inlet temperature sensor; 23, water outlet temperature sensor; 100, acquisition module; 200, calculation module; 300, control module; 601, processor; 602, memory; 603, power supply; 604, input unit. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0048] like Figure 1-5As shown, the present invention provides a control method, which is mainly applied to a heat pump air conditioner, which mainly includes a compressor 16, a condenser 12, a plate heat exchanger 14, a water pump 15, a four-way valve 11, an ambient temperature sensor 21, an outlet water temperature sensor 23, and an inlet water temperature sensor 22; wherein the ambient temperature sensor 21 is used to detect the ambient temperature of the compressor 16 and the condenser 12, the outlet water temperature sensor 23 is used to detect the outlet water temperature of the plate heat exchanger 14, and the inlet water temperature sensor 22 is used to detect the inlet water temperature of the plate heat exchanger 14. The control method includes:

[0049] S300, after determining that the heat pump air conditioner needs to be operated at a reduced frequency, determine the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature.

[0050] Among them, the best energy efficiency frequency is the operating frequency corresponding to the best energy efficiency point under the current ambient temperature. It should be noted that at each different ambient temperature, the operating frequency corresponding to the best energy efficiency point is also different.

[0051] Among them, the optimal operating frequency is an operating frequency determined according to the best energy efficiency frequency, which is lower than the current operating frequency and has higher energy efficiency. Compared with the traditional method of determining the minimum operating frequency only based on the ambient temperature, it redefines the minimum operating frequency of the heat pump air conditioner at the current ambient temperature based on energy efficiency performance, which can enable the heat pump air conditioner to have a higher energy efficiency performance when the frequency is reduced to the optimal operating frequency.

[0052] S400, controlling the heat pump air conditioner to reduce the frequency step by step between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner reduces the frequency to the optimal operating frequency.

[0053] Among them, controlling the heat pump air conditioner to reduce the frequency step by step between the current operating frequency and the optimal frequency is to control the heat pump air conditioner to reduce the frequency by a set value each time, and two adjacent frequency reductions can be the same set value or different set values.

[0054] Among them, the first condition is generally the condition that needs to be met for the normal operation of the heat pump air conditioner.

[0055] The optimal operating frequency is the minimum operating frequency. When the operating frequency drops to the optimal operating frequency, if the heat pump air conditioner has not met the first condition, the frequency reduction process will no longer be performed.

[0056] Among them, if the heat pump air conditioner has met the first condition before reducing the frequency to the optimal operating frequency, there is no need to reduce the frequency further.

[0057] S500: After the heat pump air conditioner is reduced in frequency to the optimal operating frequency, if the heat pump air conditioner still fails to meet the first condition, the heat pump air conditioner is controlled to shut down.

[0058] The optimal operating frequency is the minimum frequency that can be operated at the current temperature. If this frequency still cannot make the heat pump air conditioner meet the first condition, the heat pump air conditioner should be controlled to shut down.

[0059] It can be understood that the above method is used to control the heat pump air conditioner. After determining that the heat pump air conditioner needs to reduce the frequency, the optimal operating frequency is first determined according to the optimal energy efficiency frequency corresponding to the current ambient temperature; and the heat pump air conditioner is controlled to reduce the frequency step by step between the current operating frequency and the optimal operating frequency until the heat pump air conditioner meets the first condition and stops reducing the frequency or until the heat pump air conditioner is reduced to the optimal operating frequency; after the heat pump air conditioner is reduced to the optimal operating frequency and still fails to meet the first condition, the heat pump air conditioner is controlled to shut down; that is, the present invention uses the optimal operating frequency instead of the traditional minimum operating frequency, so that when the heat pump air conditioner is reduced to the lowest operating frequency, it still has a better energy efficiency performance, thereby saving more energy.

[0060] In some embodiments, determining the optimal operating frequency according to the best energy efficiency frequency corresponding to the current ambient temperature includes:

[0061] According to the current ambient temperature and the best energy efficiency frequency corresponding to the current ambient temperature, the standard frequency and the standard water outlet temperature corresponding to the ambient temperature are determined.

[0062] Among them, the standard frequency is F 标准 , standard water outlet temperature is T 标准 , the ambient temperature is T 环温 In general, the associated standard frequency and standard water outlet temperature are fitted based on the current ambient temperature and the corresponding optimal energy efficiency frequency.

[0063] Determine the optimal operating frequency based on the standard frequency, standard water outlet temperature, actual water outlet temperature and ambient temperature.

[0064] Among them, the optimal operating frequency is F 最优 , the actual outlet water temperature is T 出水 , then the optimal operating frequency is: F 最优 =F 标准 -a*T 环温 +b*(T 出水 -T 标准 ).

[0065] Among them, the constants a and b are generally obtained by fitting according to the current ambient temperature and the corresponding optimal energy efficiency frequency. 标准 , T 标准 are all related to the current ambient temperature and the optimal energy efficiency frequency corresponding to the ambient temperature. That is, at different temperatures, a, b, F 标准 , T 标准Different values ​​may be obtained, so the appropriate optimal operating frequency can be determined according to the current ambient temperature.

[0066] In some embodiments, before determining the optimal operating frequency according to the best energy efficiency frequency corresponding to the current ambient temperature, the control method further includes:

[0067] Determine the corresponding temperature range according to the ambient temperature.

[0068] Among them, in the control center of the heat pump air conditioner, the ambient temperature is divided into multiple temperature intervals, and the difference between the starting value and the ending value of each temperature interval is fixed. For example, the operating temperature range of the heat pump air conditioner is -15℃-55℃, then there are multiple temperature zones, including (-15℃, -10℃), (-10℃, -5℃)...(0℃, 5℃), (5℃, 10℃)...(50℃, 55℃), where the temperature zone (-15℃, -10℃) means that the starting value is -15℃, the ending value is -10℃, and the temperature range it accommodates is greater than or equal to -15℃ and less than -10℃.

[0069] The specific number of temperature intervals can be determined based on actual conditions.

[0070] Each temperature interval has multiple temperatures. In order to facilitate the control of the heat pump air conditioner, multiple optimal operating frequencies corresponding to the multiple temperatures are screened, and a representative value of the optimal operating frequency corresponding to the current temperature interval is screened out.

[0071] Among them, when screening the optimal energy efficiency points corresponding to multiple different temperatures, the optimal operating frequency that appears most times in the temperature range can be selected as the representative value of the optimal operating frequency in the temperature range; or the average value of multiple optimal operating frequencies in the temperature range can be used as the representative value of the optimal operating frequency.

[0072] According to the temperature range, determine the corresponding optimal energy efficiency frequency.

[0073] Among them, according to the ambient temperature, the temperature range to which it belongs is determined, and according to the temperature range to which it belongs, the corresponding optimal energy efficiency frequency representative value is used as the optimal energy efficiency frequency corresponding to the ambient temperature, so as to save time in determining the optimal energy efficiency frequency.

[0074] Specifically, in some embodiments, the control center of the heat pump air conditioner stores at least two different sets of a, b, and F according to the ambient temperature range. 标准 , T 标准 , to quickly determine the optimal operating frequency according to different ambient temperatures.

[0075] For example, in some specific embodiments, the ambient temperature is divided into three intervals: a, b, F 标准 , T标准 There are also three groups, and the specific data are shown in the following table:

[0076]

[0077]

[0078] It is understandable that the above-mentioned ambient temperature interval division is only for some embodiments and does not mean that it is limited to this value range.

[0079] According to the above embodiment, when the ambient temperature is 10°C and the actual outlet water temperature is 40°C, F 最优 =60-2*10+6*(40-40)=40.

[0080] In some embodiments, the optimal energy efficiency frequency corresponding to each frequency is also affected by the inlet water temperature of the heat pump air conditioner, that is, before determining the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature, the control method further includes:

[0081] Determine the corresponding optimal energy efficiency frequency based on the ambient temperature and water inlet temperature.

[0082] Among them, the energy efficiency standards corresponding to different operating frequencies are generally determined by simulation based on the ambient temperature and water inlet temperature, such as Figure 5 In the energy efficiency and frequency table shown, the outdoor temperature is the ambient temperature, and the best energy efficiency point is the best energy efficiency frequency.

[0083] Generally, the control center of the heat pump air conditioner pre-stores the energy consumption data corresponding to each ambient temperature and inlet water temperature. That is, after determining the ambient temperature and inlet water temperature, the optimal energy efficiency frequency corresponding to the ambient temperature and inlet water temperature can be directly called.

[0084] In some embodiments, the control method further comprises:

[0085] S100: Determine whether the heat pump air conditioner needs to reduce frequency according to the actual outlet water temperature and the preset temperature.

[0086] The actual outlet water temperature is the outlet water temperature of the plate heat exchanger, and the preset temperature is the temperature data pre-stored in the heat pump air conditioner. When the actual outlet water temperature exceeds the preset temperature, it means that the air conditioner has a certain degree of overheating or overload. In order to ensure the normal and sustainable operation of the air conditioner, it is necessary to reduce the frequency. Therefore, by comparing the actual outlet water temperature with the preset temperature, it can be determined whether the heat pump air conditioner needs to reduce the frequency.

[0087] S110: If the actual outlet water temperature is lower than the preset temperature, it is determined that the heat pump air conditioner does not need to reduce the frequency.

[0088] S120: If the actual outlet water temperature is greater than or equal to the preset temperature, it is determined that the heat pump air conditioner needs to be frequency-reduced.

[0089] Based on the above control method, steps S100-S500 in the scheme of the present invention are a control method for reducing the frequency of a heat pump air conditioner to achieve sustainable and high-reliability operation. By determining the optimal operating frequency based on the optimal energy efficiency frequency, the heat pump air conditioner still has a higher energy efficiency performance when the frequency is reduced to the optimal operating frequency to maintain the sustainable operation of the heat pump air conditioner.

[0090] It can be understood that, through the above control method, the heat pump air conditioner operating at the optimal operating frequency can improve its operating energy efficiency by 38%-83% compared with the conventional air conditioner directly operating at the minimum operating frequency.

[0091] In some embodiments, controlling the heat pump air conditioner to gradually reduce the frequency between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner reduces the frequency to the optimal operating frequency includes:

[0092] Based on the current operating frequency of the heat pump air conditioner, the heat pump air conditioner is controlled to reduce the frequency once, and whether to continue reducing the frequency is determined according to the first frequency after the heat pump air conditioner is reduced in frequency, the optimal operating frequency, the actual water outlet temperature and the preset temperature;

[0093] If the first frequency is greater than the optimal operating frequency, and the actual outlet water temperature is greater than the preset temperature, repeat the above steps to control the heat pump air conditioner to reduce the frequency until the actual outlet water temperature is less than or equal to the preset temperature, or until the first frequency is equal to the optimal operating frequency;

[0094] If the first frequency is greater than the optimal operating frequency and the actual outlet water temperature is less than or equal to the preset temperature, the frequency reduction is stopped and the current frequency is maintained.

[0095] That is, if the first frequency after frequency reduction is greater than the optimal operating frequency, and the actual water outlet temperature is less than or equal to the preset temperature, it means that the current heat pump air conditioner can operate safely and continuously, and there is no need to reduce the frequency further.

[0096] In some embodiments, after the heat pump air conditioner is reduced in frequency to the optimal operating frequency, if the heat pump air conditioner still fails to meet the first condition, the heat pump air conditioner is controlled to shut down, including:

[0097] If the first frequency is equal to the optimal operating frequency and the actual outlet water temperature is greater than the preset temperature, the heat pump air conditioner is controlled to shut down;

[0098] If the first frequency is equal to the optimal operating frequency and the actual outlet water temperature is less than or equal to the preset temperature, the current frequency operation is maintained.

[0099] That is, if the actual outlet water temperature is still greater than the preset temperature after the first frequency is equal to the optimal operating frequency, it means that the current operating conditions are not suitable for continuing to operate the heat pump air conditioner, and the heat pump air conditioner is calmly controlled to shut down to protect the heat pump air conditioner.

[0100] In some embodiments, controlling the heat pump air conditioner to gradually reduce the frequency between the current operating frequency and the optimal operating frequency includes:

[0101] The frequency reduction value of each stage of the heat pump air conditioner's step-by-step frequency reduction is the same.

[0102] The frequency reduction value is the difference between the operating frequency before the frequency reduction and the operating frequency after the frequency reduction.

[0103] That is, the method is to control the heat pump air conditioner to gradually reduce its frequency by equal values, so as to control the heat pump air conditioner to be at a suitable operating frequency.

[0104] In some embodiments, controlling the heat pump air conditioner to gradually reduce the frequency between the current operating frequency and the optimal operating frequency includes:

[0105] The frequency reduction value of each stage of the heat pump air conditioner's step-by-step frequency reduction is different.

[0106] Specifically, the frequency reduction value of the previous frequency reduction is greater than the frequency reduction value of the current frequency reduction, and the frequency reduction value of the current frequency reduction is greater than the frequency reduction value of the next frequency reduction, that is, by gradually reducing the frequency reduction value, the heat pump can be controlled more accurately to control the appropriate frequency of the frequency reduction value.

[0107] For another example, the previous frequency reduction value is smaller than the frequency reduction value of this frequency reduction, and the frequency reduction value of this frequency reduction is smaller than the frequency reduction value of the next frequency reduction, that is, by gradually increasing the frequency reduction value, the operating frequency can be adjusted to the preset frequency more quickly.

[0108] In some embodiments, the present invention further provides a control device 10, including an acquisition module 100, a calculation module 200 and a control module 300. The acquisition module 100 is used to obtain the ambient temperature of the environment in which the heat pump air conditioner is located, and the acquisition module 100 is also used to obtain the optimal energy efficiency frequency of the heat pump air conditioner corresponding to the current ambient temperature. The calculation module 200 is used to determine the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature after determining that the heat pump air conditioner needs to reduce the frequency. The control module 300 is used to control the heat pump air conditioner to reduce the frequency step by step between the current operating frequency and the optimal operating frequency until the heat pump air conditioner meets the first condition and stops reducing the frequency or until the heat pump air conditioner reduces the frequency to the optimal operating frequency. The control module 300 is also used to control the heat pump air conditioner to shut down if the heat pump air conditioner still fails to meet the first condition after reducing the frequency to the optimal operating frequency.

[0109] In some embodiments, the present invention further provides a heat pump air conditioner, which may include one or more processors 601 of processing cores, one or more computer-readable storage media memories 602, a power supply 603, an input unit 604 and other components. Those skilled in the art will appreciate that the structure of the heat pump air conditioner described above does not constitute a limitation on the heat pump air conditioner, and may include more or fewer components, or a combination of certain components, or different component arrangements. Among them:

[0110] The processor 601 is the control center of the heat pump air conditioner. It uses various interfaces and lines to connect various parts of the entire heat pump air conditioner. By running or executing software programs and / or modules stored in the memory 602, and calling data stored in the memory 602, it performs various functions of the heat pump air conditioner and processes data, thereby monitoring the heat pump air conditioner as a whole. Optionally, the processor 601 may include one or more processing cores; preferably, the processor 601 may integrate an application processor 601 and a modem processor 601, wherein the application processor 601 mainly processes the operating system, user interface and computer programs, etc., and the modem processor 601 mainly processes wireless communications. It is understandable that the above-mentioned modem processor 601 may not be integrated into the processor 601.

[0111] The memory 602 can be used to store software programs and modules. The processor 601 executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, a computer program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the server, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory may also include a memory controller to provide the processor 601 with access to the memory.

[0112] The heat pump air conditioner also includes a power supply 603 for supplying power to various components. Preferably, the power supply 603 can be logically connected to the processor 601 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. The power supply can also include any components such as one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators.

[0113] The heat pump air conditioner may further include an input unit 604, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0114] Although not shown, the heat pump air conditioner may further include a display unit, etc., which will not be described in detail herein. Specifically, in this embodiment, the processor 601 in the heat pump air conditioner will load the executable files corresponding to the processes of one or more computer programs into the memory 602 according to the following instructions, and the processor 601 will run the computer program stored in the memory 602 to perform the following steps:

[0115] After determining that the heat pump air conditioner needs to be operated at a reduced frequency, the optimal operating frequency is determined based on the optimal energy efficiency frequency corresponding to the current ambient temperature;

[0116] Controlling the heat pump air conditioner to gradually reduce the frequency between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner reduces the frequency to the optimal operating frequency;

[0117] After the heat pump air conditioner is reduced in frequency to the optimal operating frequency, if the heat pump air conditioner still fails to meet the first condition, the heat pump air conditioner is controlled to shut down.

[0118] After determining that the heat pump air conditioner needs to reduce the frequency, the heat pump air conditioner first determines the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature; and controls the heat pump air conditioner to reduce the frequency step by step between the current operating frequency and the optimal operating frequency, until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner is reduced to the optimal operating frequency; after the heat pump air conditioner is reduced to the optimal operating frequency, if the first condition is still not met, the heat pump air conditioner is controlled to shut down; that is, the present invention uses the optimal operating frequency instead of the traditional minimum operating frequency, so that when the heat pump air conditioner is reduced to the minimum operating frequency, it still has a better energy efficiency performance, thereby saving more energy.

[0119] A person skilled in the art will appreciate that all or part of the steps in any of the methods in the above embodiments may be completed by a computer program, or by controlling related hardware through a computer program. The computer program may be stored in a computer-readable storage medium and loaded and executed by the processor 601.

[0120] In some embodiments, the present invention further provides a storage medium, the storage medium stores a computer program, and the computer program is loaded by a processor to perform the following steps:

[0121] After determining that the heat pump air conditioner needs to be operated at a reduced frequency, the optimal operating frequency is determined based on the optimal energy efficiency frequency corresponding to the current ambient temperature;

[0122] Controlling the heat pump air conditioner to gradually reduce the frequency between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner reduces the frequency to the optimal operating frequency;

[0123] After the heat pump air conditioner is reduced in frequency to the optimal operating frequency, if the heat pump air conditioner still fails to meet the first condition, the heat pump air conditioner is controlled to shut down.

[0124] Through the above steps, after determining that the heat pump air conditioner needs to reduce the frequency, first determine the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature; and control the heat pump air conditioner to reduce the frequency step by step between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner is reduced to the optimal operating frequency; after the heat pump air conditioner is reduced to the optimal operating frequency, and still fails to meet the first condition, control the heat pump air conditioner to shut down; that is, the present invention uses the optimal operating frequency instead of the traditional minimum operating frequency, so that when the heat pump air conditioner is reduced to the minimum operating frequency, it still has a better energy efficiency performance, thereby saving more energy.

[0125] It will be appreciated by those skilled in the art that any reference to memory, storage, database or other medium used in the embodiments provided by the present invention may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink), DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0126] Since the computer program stored in the storage medium can execute the steps in the air-conditioning control method in any embodiment provided by the present invention, the beneficial effects that can be achieved by the air-conditioning control method in any embodiment provided by the present invention can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0127] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0128] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0129] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, within the application concept of the present invention are included in the patent protection scope of the present invention.

Claims

1. A control method, characterized in that: The control method comprises: After determining that the heat pump air conditioner needs to be operated at a reduced frequency, the optimal operating frequency is determined based on the optimal energy efficiency frequency corresponding to the current ambient temperature; Controlling the heat pump air conditioner to reduce the frequency step by step between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner reduces the frequency to the optimal operating frequency; After the heat pump air conditioner is reduced in frequency to the optimal operating frequency, if the heat pump air conditioner still fails to meet the first condition, the heat pump air conditioner is controlled to shut down.

2. The control method according to claim 1, characterized in that: Determining the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature includes: Determine the standard frequency and water outlet temperature corresponding to the ambient temperature according to the optimal energy efficiency frequency; The optimal operating frequency is determined according to the standard frequency, the standard outlet water temperature, the actual outlet water temperature and the ambient temperature.

3. The control method according to claim 2, characterized in that: Before determining the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature, the control method further includes: According to the ambient temperature, determining a corresponding temperature range; According to the temperature range, the corresponding optimal energy efficiency frequency is determined.

4. The control method according to claim 1, characterized in that: The control method further comprises: Determining whether the heat pump air conditioner needs to reduce frequency according to the actual water outlet temperature and the preset temperature; If the actual outlet water temperature is lower than the preset temperature, it is determined that the heat pump air conditioner does not need to reduce the frequency; If the actual outlet water temperature is greater than or equal to the preset temperature, it is determined that the heat pump air conditioner needs to be frequency-reduced.

5. The control method according to claim 4, characterized in that: The step of controlling the heat pump air conditioner to reduce the frequency step by step between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner reduces the frequency to the optimal operating frequency includes: Based on the current operating frequency of the heat pump air conditioner, controlling the heat pump air conditioner to reduce the frequency once, and determining whether to continue reducing the frequency according to the first frequency after the heat pump air conditioner is reduced in frequency, the optimal operating frequency, the actual water outlet temperature and the preset temperature; If the first frequency is greater than the optimal operating frequency, and the actual outlet water temperature is greater than the preset temperature, repeat the above steps to control the heat pump air conditioner to reduce the frequency until the actual outlet water temperature is less than or equal to the preset temperature, or until the first frequency is equal to the optimal operating frequency; If the first frequency is greater than the optimal operating frequency and the actual outlet water temperature is less than or equal to the preset temperature, the frequency reduction is stopped and the current frequency operation is maintained.

6. The control method according to claim 5, characterized in that: After the heat pump air conditioner is reduced in frequency to the optimal operating frequency, if the heat pump air conditioner still fails to meet the first condition, controlling the heat pump air conditioner to shut down includes: If the first frequency is equal to the optimal operating frequency, and the actual outlet water temperature is greater than the preset temperature, the heat pump air conditioner is controlled to shut down; If the first frequency is equal to the optimal operating frequency, and the actual outlet water temperature is less than or equal to the preset temperature, the current frequency operation is maintained.

7. The control method according to claim 1, characterized in that: The step of controlling the heat pump air conditioner to gradually reduce the operating frequency between the current operating frequency and the optimal operating frequency includes: The step-by-step frequency reduction value of each step of the heat pump air conditioner is the same; or The frequency reduction value of each stage of the step-by-step frequency reduction of the heat pump air conditioner is different.

8. A control device, characterized in that: include: An acquisition module, in which a user acquires the ambient temperature of the environment in which the heat pump air conditioner is located, and is used to acquire the optimal energy efficiency frequency corresponding to the current ambient temperature of the heat pump air conditioner; The calculation module determines the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature after determining that the heat pump air conditioner needs to be operated at a reduced frequency; A control module is used to control the heat pump air conditioner to reduce the frequency step by step between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing the frequency when the first condition is met or until the heat pump air conditioner is reduced to the optimal operating frequency; the control module is also used to control the heat pump air conditioner to shut down if the heat pump air conditioner still fails to meet the first condition after the heat pump air conditioner is reduced to the optimal operating frequency.

9. A heat pump air conditioner, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and the processor is used to run the computer program in the memory to execute the steps in the control method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores a computer program, and the computer program is loaded and executed by the processor to execute the steps in the control method according to any one of claims 1 to 7.

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