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

Abstract

The application discloses a control method, a control device, a heat pump air conditioner and a storage medium, and relates to the technical field of heat pump air conditioners, in particular to a control method for controlling a heat pump air conditioner to operate at a minimum frequency, which comprises the following steps: after determining that the heat pump air conditioner needs to operate at a reduced frequency, determining an optimal operating frequency according to an optimal energy efficiency frequency corresponding to a current ambient temperature; 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 meeting a first condition or until the heat pump air conditioner reduces the frequency to the optimal operating frequency; after the heat pump air conditioner reduces the 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 stop operating. By using the optimal operating frequency instead of the conventional minimum operating frequency, the heat pump air conditioner still has a good energy efficiency performance when reducing the frequency to the minimum operating frequency, and is more energy-saving.

Description

TECHNICAL FIELD

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

[0002] The heat pump air conditioner uses the solar energy resources stored in the ground soil, air and water body as the cold and heat source, has no combustion, no smoke exhaust, no waste and no pollution, and is a clean and environmentally-friendly technology using renewable resources. The heat pump system is composed of four parts, i.e. a heat pump unit, a high-level energy transmission and distribution system, a low-level heat source collection system and a heat distribution system. The heat pump unit taking 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 be reliably operated for a long time, the minimum operating frequency under the current environmental temperature is usually used for operation, but the minimum operating frequency may not be the optimal energy efficiency point, and the current minimum operating frequency may result in low operating efficiency and poor energy saving effect. SUMMARY

[0004] The main purpose of the embodiments of the present application is to provide a control method, a control device, a heat pump air conditioner and a storage medium, aiming at improving the technical problem of low operating efficiency of the heat pump air conditioner in the prior art when running at the minimum operating frequency corresponding to the environmental temperature.

[0005] The embodiments of the present application provide a control method, comprising:

[0006] According to the heart rate data of the user, it is determined whether to start the oxygen generating device;

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

[0008] The heat pump air conditioner is controlled to be gradually reduced in 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;

[0009] After the heat pump air conditioner is reduced to the optimal operating frequency, if the heat pump air conditioner still cannot meet the first condition, the heat pump air conditioner is controlled to be stopped.

[0010] In some embodiments of the present application, the optimal operating frequency is determined according to the optimal energy efficiency frequency corresponding to the current environmental temperature, comprising:

[0011] According to the optimal energy efficiency frequency, the standard frequency and the standard water outlet temperature corresponding to the environmental temperature are determined;

[0012] determining an optimal operation frequency 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 application, before determining the optimal operation frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature, the control method further comprises:

[0014] determining a temperature interval corresponding to the ambient temperature;

[0015] determining the optimal energy efficiency frequency corresponding to the temperature interval.

[0016] In some embodiments of the present application, the control method further comprises:

[0017] determining whether the heat pump air conditioner needs to be frequency-reduced according to the actual outlet water temperature and a preset temperature;

[0018] if the actual outlet water temperature is less than the preset temperature, determining that the heat pump air conditioner does not need to be frequency-reduced;

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

[0020] In some embodiments of the present application, the control of the heat pump air conditioner frequency-reducing step by step between the current operation frequency and the optimal operation frequency until the heat pump air conditioner meets the first condition or until the heat pump air conditioner frequency-reduces to the optimal operation frequency, comprises:

[0021] controlling the heat pump air conditioner to frequency-reduce once based on the current operation frequency of the heat pump air conditioner, and determining whether to continue frequency-reducing according to the first frequency after the heat pump air conditioner frequency-reduces, the optimal operation frequency, the actual outlet water temperature and the preset temperature;

[0022] if the first frequency is greater than the optimal operation frequency and the actual outlet water temperature is greater than the preset temperature, repeating the above steps to control the heat pump air conditioner to frequency-reduce 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 operation frequency;

[0023] if the first frequency is greater than the optimal operation frequency and the actual outlet water temperature is less than or equal to the preset temperature, stopping frequency-reducing and keeping the current frequency running.

[0024] In some embodiments of the present application, after the heat pump air conditioner frequency-reduces to the optimal operation frequency, if the heat pump air conditioner still fails to meet the first condition, the control method further comprises:

[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 stop running;

[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 is maintained to run.

[0027] In some embodiments of the present application, the control of the heat pump air conditioner to step down the frequency between the current operating frequency and the optimal operating frequency comprises:

[0028] each step down value of the heat pump air conditioner is the same; or

[0029] each step down value of the heat pump air conditioner is different.

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

[0031] an acquisition module, which is configured to acquire an ambient temperature of an environment in which a heat pump air conditioner is located, and to acquire a best energy efficiency frequency corresponding to the current ambient temperature of the heat pump air conditioner;

[0032] a calculation module, which is configured to, after determining that the heat pump air conditioner needs to run at a lower frequency, determine an optimal operating frequency according to the best energy efficiency frequency corresponding to the current ambient temperature;

[0033] a control module, which is configured to control the heat pump air conditioner to step down the frequency between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops running at a lower frequency when a first condition is met or until the heat pump air conditioner runs at the optimal operating frequency; and the control module is further configured to, after the heat pump air conditioner runs at the optimal operating frequency, control the heat pump air conditioner to stop running if the first condition is still not met.

[0034] In some embodiments of the present application, a heat pump air conditioner is further provided, comprising a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program in the memory to execute the steps in the above control method.

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

[0036] The embodiment of the present application provides a control method, device, heat pump air conditioner and storage medium, the control method determines the optimal operation frequency according to the optimal energy efficiency frequency corresponding to the current environment temperature after determining that the heat pump air conditioner needs to reduce the frequency; and controls the heat pump air conditioner to reduce the frequency between the current operation frequency and the optimal operation frequency, until the heat pump air conditioner stops reducing the frequency when meeting the first condition or until the heat pump air conditioner reduces the frequency to the optimal operation frequency; after the heat pump air conditioner reduces the frequency to the optimal operation frequency, and still fails to meet the first condition, the heat pump air conditioner is controlled to stop; that is, the optimal operation frequency is used instead of the traditional minimum operation frequency, so that the heat pump air conditioner has a better energy efficiency when reducing the frequency to the minimum operation frequency, thereby being more energy-saving. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without any creative effort.

[0038] Figure 1 The flowchart of the control method of one embodiment of the present application;

[0039] Figure 2 The structural schematic diagram of the control device of one embodiment of the present application;

[0040] Figure 3 The structural schematic diagram of the heat pump air conditioner of one embodiment of the present application;

[0041] Figure 4 The component connection relationship diagram of the heat pump air conditioner of one embodiment of the present application;

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

[0043] The drawings show that: 10, control device; 11, four-way valve; 12, condenser; 13, throttling element; 14, plate heat exchanger; 15, water pump; 16, compressor; 21, environment 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] Clearly, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative efforts on the basis of the embodiments in the present application shall fall within the protection scope of the present application.

[0045] It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the direction indications also change accordingly.

[0046] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In addition, if the present application has descriptions involving "first", "second", etc., the descriptions of "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it shall be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0048] As Figures 1-5As shown, the present application provides a control method, mainly applied to a heat pump air conditioner, which mainly comprises 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, a water outlet temperature sensor 23, and a water inlet temperature sensor 22; wherein the ambient temperature sensor 21 is used to detect the ambient temperature where the compressor 16 and the condenser 12 are located, the water outlet temperature sensor 23 is used to detect the water outlet temperature of the plate heat exchanger 14, and the water inlet temperature sensor 22 is used to detect the water inlet temperature of the plate heat exchanger 14, and the control method comprises:

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

[0050] Wherein, the optimal energy efficiency frequency is the operating frequency corresponding to the optimal energy efficiency point at the current ambient temperature, and it should be noted that the operating frequency corresponding to the optimal energy efficiency point is different at each different ambient temperature.

[0051] Wherein, the optimal operating frequency is an operating frequency lower than the current operating frequency and having a higher energy efficiency, which is determined according to the optimal energy efficiency frequency, and it is based on the energy efficiency performance to re-determine the minimum operating frequency of the heat pump air conditioner at the current ambient temperature, so that the heat pump air conditioner has a higher energy efficiency performance when it is operated at the optimal operating frequency.

[0052] S400, 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 meets the first condition or until the heat pump air conditioner is operated at the optimal operating frequency.

[0053] Wherein, controlling the heat pump air conditioner to gradually reduce the frequency between the current operating frequency and the optimal frequency means controlling the heat pump air conditioner to reduce the frequency by a set value each time, and the set values of the two adjacent frequency reductions can be the same or different.

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

[0055] Wherein, the optimal operating frequency is the minimum operating frequency, and when the operating frequency is reduced to the optimal operating frequency, if the heat pump air conditioner has not met the first condition, the frequency reduction process is not performed.

[0056] Wherein, if the heat pump air conditioner has met the first condition before being operated at the optimal operating frequency, the frequency reduction is not needed.

[0057] S500, after the heat pump air conditioner is operated at the optimal operating frequency, if the heat pump air conditioner still cannot meet the first condition, the heat pump air conditioner is controlled to be shut down.

[0058] Wherein, the optimal operating frequency is the minimum frequency that can be operated at the current temperature, if the frequency still cannot make the heat pump air conditioner meet the first condition, the heat pump air conditioner should be controlled to stop.

[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 be reduced in frequency, the optimal operating frequency is determined according to the optimal energy efficiency frequency corresponding to the current environment temperature, and the heat pump air conditioner is controlled to be gradually reduced in frequency between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops reducing in frequency when meeting the first condition 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 cannot meet the first condition, the heat pump air conditioner is controlled to stop; that is, the optimal operating frequency is used instead of the traditional minimum operating frequency, so that the heat pump air conditioner still has a good energy efficiency performance when being reduced to the minimum operating frequency, thereby being more energy-saving.

[0060] In some embodiments, the optimal operating frequency is determined according to the optimal energy efficiency frequency corresponding to the current environment temperature, comprising:

[0061] The standard frequency and the standard outlet water temperature corresponding to the environment temperature are determined according to the current environment temperature and the optimal energy efficiency frequency corresponding to the current environment temperature.

[0062] Wherein, the standard frequency is F 标准 , the standard outlet water temperature is T 标准 , and the environment temperature is T 环温 . Generally, the associated standard frequency and the standard outlet water temperature are fitted according to the current environment temperature and the corresponding optimal energy efficiency frequency.

[0063] The optimal operating frequency is determined according to the standard frequency, the standard outlet water temperature, the actual outlet water temperature and the environment temperature.

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

[0065] Wherein, the constant terms a and b are generally fitted according to the current environment temperature and the corresponding optimal energy efficiency frequency. That is, a, b, F 标准 , T 标准 are related to the current environment temperature and the optimal energy efficiency frequency corresponding to the environment temperature. That is, a, b, F 标准 , T 标准Different values can be obtained, and thus the 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 optimal energy efficiency frequency corresponding to the current ambient temperature, the control method further comprises:

[0067] According to the ambient temperature, the corresponding temperature interval is determined.

[0068] In the control center of the heat pump air conditioner, the ambient temperature is divided into multiple temperature intervals, and the difference between the first end value and the last end value of each temperature interval is fixed. For example, the operating temperature range of the heat pump air conditioner is -15℃-55℃, and the temperature interval has multiple temperature intervals, including (-15℃, -10℃), (-10℃, -5℃)...(0℃, 5℃), (5℃, 10℃)...(50℃, 55℃), wherein the meaning of the temperature interval (-15℃, -10℃) is that the first end value is -15℃ and the last end value is -10℃, and the temperature range it contains is greater than or equal to -15℃ and less than -10℃.

[0069] The specific number of temperature intervals can be determined according to actual conditions.

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

[0071] When the optimal energy efficiency points corresponding to multiple different temperatures are screened, the optimal operating frequency that appears most frequently in the temperature interval can be selected as the optimal operating frequency representative value of the temperature interval; or the average value of the multiple optimal operating frequencies in the temperature interval can be selected as the optimal operating frequency representative value.

[0072] According to the temperature interval, the corresponding optimal energy efficiency frequency is determined.

[0073] According to the ambient temperature, the corresponding temperature interval is determined, and the optimal energy efficiency frequency representative value corresponding to the temperature interval is determined as the optimal energy efficiency frequency corresponding to the ambient temperature, so as to save the time of determining the optimal energy efficiency frequency.

[0074] Specifically, in some embodiments, in the control center of the heat pump air conditioner, according to the ambient temperature interval, at least two different a, b, F 标准 , T 标准 are stored 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 Also corresponds to three groups, the specific data as shown in the following table:

[0076]

[0077]

[0078] It can be understood that the above-mentioned ambient temperature interval division, only for part of the embodiment value, not limited to the value range.

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

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

[0081] According to the ambient temperature, the inlet water temperature, the corresponding best energy efficiency frequency is determined.

[0082] Among them, generally according to the ambient temperature, the inlet water temperature, the energy efficiency standard corresponding to different operating frequencies is simulated and determined, such as Figure 5 The energy efficiency and frequency table shown in the figure, the outdoor temperature is the ambient temperature, and the best energy efficiency point is the best energy efficiency frequency.

[0083] Among them, 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 best 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, according to the actual outlet water temperature and the preset temperature, determining whether the heat pump air conditioner needs to be reduced in frequency.

[0086] Among them, 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 overheating or overload, in order to ensure the normal and sustainable operation of the air conditioner, it is necessary to reduce the frequency and other operations. Therefore, by comparing the actual outlet water temperature and the preset temperature, it can be determined whether the heat pump air conditioner needs to be reduced in frequency.

[0087] S110, if the actual outlet water temperature is less than the preset temperature, it is determined that the heat pump air conditioner does not need to be reduced in 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 reduced in frequency.

[0089] Based on the above control method, the steps S100-S500 in the scheme of the present application are a control method for reducing the frequency of the 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 it is reduced to the optimal operating frequency to maintain sustainable operation of the heat pump air conditioner.

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

[0091] In some embodiments, 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 stops reducing the frequency when the first condition is met or until the heat pump air conditioner is reduced to the optimal operating frequency, comprising:

[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 according to the first frequency after the heat pump air conditioner is reduced, the optimal operating frequency, the actual outlet water temperature and the preset temperature, it is determined whether to continue to reduce the frequency;

[0093] If the first frequency is greater than the optimal operating frequency, and the actual outlet water temperature is greater than the preset temperature, the above steps are repeated 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 kept running.

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

[0096] In some embodiments, after the heat pump air conditioner is reduced 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 stop, comprising:

[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 stop;

[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 is kept running.

[0099] That is, if the actual water outlet 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 condition is not suitable for the heat pump air conditioner to continue operating, and the heat pump air conditioner is controlled to stop operating to protect the heat pump air conditioner.

[0100] In some embodiments, the heat pump air conditioner is controlled to step down the frequency between the current operating frequency and the optimal operating frequency, including:

[0101] The step-down value of each step-down of the heat pump air conditioner is the same.

[0102] The step-down value is the difference between the operating frequency before the step-down and the operating frequency after the step-down.

[0103] That is, the method is to control the heat pump air conditioner to step down the frequency to control the heat pump air conditioner to operate at a suitable operating frequency.

[0104] In some embodiments, the heat pump air conditioner is controlled to step down the frequency between the current operating frequency and the optimal operating frequency, including:

[0105] The step-down value of each step-down of the heat pump air conditioner is different.

[0106] Specifically, the step-down value of the last step-down is greater than the step-down value of the current step-down, and the step-down value of the current step-down is greater than the step-down value of the next step-down, that is, the step-down value is gradually reduced to more accurately control the heat pump air conditioner to operate at a suitable frequency.

[0107] For example, the step-down value of the last step-down is less than the step-down value of the current step-down, and the step-down value of the current step-down is less than the step-down value of the next step-down, that is, the step-down value is gradually increased to more quickly adjust the operating frequency to the preset frequency.

[0108] In some embodiments, the present application also 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 acquire the ambient temperature of the environment in which the heat pump air conditioner is located, and the acquisition module 100 is also used to acquire the optimal energy efficiency frequency corresponding to the current ambient temperature of the heat pump air conditioner. 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 step down the frequency. The control module 300 is used to control the heat pump air conditioner to step down the frequency between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops stepping down when the first condition is met or until the heat pump air conditioner steps down to the optimal operating frequency. The control module 300 is also used to control the heat pump air conditioner to stop operating if the heat pump air conditioner still fails to meet the first condition after the heat pump air conditioner steps down to the optimal operating frequency.

[0109] In some embodiments, the present application also provides a heat pump air conditioner, which can include a processor 601 with one or more processing cores, a memory 602 with one or more computer readable storage media, a power supply 603, an input unit 604, and the like. Those skilled in the art can understand that the structure of the heat pump air conditioner described above does not constitute a limitation on the heat pump air conditioner, and can include more or fewer components, or combine certain components, or different component arrangements. Among them:

[0110] The processor 601 is the control center of the heat pump air conditioner, and connects various parts of the heat pump air conditioner through various interfaces and lines, executes software programs and / or modules stored in the memory 602, and calls data stored in the memory 602, to perform various functions of the heat pump air conditioner and process data, thereby overall monitoring the heat pump air conditioner. Optionally, the processor 601 can include one or more processing cores; preferably, the processor 601 can 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 communication. It can be understood that the above-mentioned modem processor 601 can also not be integrated into the processor 601.

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

[0112] The heat pump air conditioner also includes a power supply 603 for powering various components, and preferably the power supply 603 can be logically connected to the processor 601 through a power management system, thereby realizing the functions of managing charging, discharging, and power consumption management, etc. through the power management system. The power supply can also include one or more direct current or alternating current power supplies, a recharging system, a power supply fault detection circuit, a power supply converter or inverter, a power supply state indicator, and the like.

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

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

[0115] After determining that the heat pump air conditioner needs to be frequency-reduced, an optimal operating frequency is determined according to the optimal energy efficiency frequency corresponding to the current ambient temperature;

[0116] The heat pump air conditioner is controlled to be frequency-reduced step by step between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops frequency-reducing when the first condition is met or until the heat pump air conditioner is frequency-reduced to the optimal operating frequency;

[0117] After the heat pump air conditioner is frequency-reduced to the optimal operating frequency, if the first condition is still not met, the heat pump air conditioner is controlled to be shut down.

[0118] The heat pump air conditioner, after determining that the heat pump air conditioner needs to be frequency-reduced, first determines an optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature, and controls the heat pump air conditioner to be frequency-reduced step by step between the current operating frequency and the optimal operating frequency until the heat pump air conditioner stops frequency-reducing when the first condition is met or until the heat pump air conditioner is frequency-reduced to the optimal operating frequency. After the heat pump air conditioner is frequency-reduced to the optimal operating frequency, and the first condition is still not met, the heat pump air conditioner is controlled to be shut down. That is, by using the optimal operating frequency to replace the conventional minimum operating frequency, the heat pump air conditioner, when frequency-reduced to the minimum operating frequency, still has a good energy efficiency performance, thereby being more energy-saving.

[0119] Those of ordinary skill in the art can understand that all or part of the steps in any of the methods of the above embodiments can be completed by a computer program or by a computer program controlling related hardware, which can be stored in a computer readable storage medium and loaded and executed by the processor 601.

[0120] In some embodiments, the present application also provides a storage medium storing a computer program, which is loaded and executed by a processor to perform the following steps:

[0121] After determining that the heat pump air conditioner needs to be frequency-reduced, an optimal operating frequency is determined according to the optimal energy efficiency frequency corresponding to the current ambient temperature;

[0122] The heat pump air conditioner is controlled to step down in frequency between the current frequency and the optimal frequency until the heat pump air conditioner meets the first condition or until the heat pump air conditioner is reduced to the optimal frequency.

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

[0124] Through the above steps, after it is determined that the heat pump air conditioner needs to be reduced in frequency, the optimal frequency is determined according to the optimal energy efficiency frequency corresponding to the current ambient temperature, and the heat pump air conditioner is controlled to step down in frequency between the current frequency and the optimal frequency until the heat pump air conditioner meets the first condition or until the heat pump air conditioner is reduced to the optimal frequency. After the heat pump air conditioner is reduced to the optimal frequency, and still fails to meet the first condition, the heat pump air conditioner is controlled to stop. That is, by using the optimal frequency instead of the conventional minimum frequency, the heat pump air conditioner still has a good energy efficiency performance when it is reduced to the minimum frequency, thereby being more energy-saving.

[0125] As can be appreciated by one of ordinary skill in the art, any reference to memory, storage, a database, or other medium can include a non-volatile and / or volatile memory. Non-volatile memory can include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM), or external cache memory. Examples of RAM include static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), Rambus direct memory access (RDRAM), and Rambus dynamic RAM (RDRAM).

[0126] Due to the computer program stored in the storage medium, the steps in the air conditioner control method of any of the embodiments provided by the present application can be executed, and thus the beneficial effects of the air conditioner control method of any of the embodiments provided by the present application can be achieved. Details are described in the foregoing embodiments, which will not be repeated here.

[0127] The specific implementation of each operation can refer to the foregoing embodiments, which will not be repeated here.

[0128] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the detailed description of other embodiments above, which will not be described here again.

[0129] The above only describes optional embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like made by using the content of the present application specification and drawings within the application concept of the present application is included in the patent protection scope of the present application.

Claims

1. A control method characterized by, The control method comprises: After determining that the heat pump air conditioner needs to operate at a reduced frequency, determining an optimal operating frequency according to an optimal energy efficiency frequency corresponding to a current ambient temperature; Controlling the heat pump air conditioner to gradually reduce the frequency between the current operating frequency and the optimal operating frequency, stopping the frequency reduction when the heat pump air conditioner meets a first condition, and continuing the frequency reduction until the heat pump air conditioner operates at the optimal operating frequency when the heat pump air conditioner does not meet the first condition; After the heat pump air conditioner operates at the optimal operating frequency, if the heat pump air conditioner still does not meet the first condition, stopping the heat pump air conditioner; The control method further comprises: Determining whether the heat pump air conditioner needs to reduce the frequency according to an actual outlet water temperature and a preset temperature; If the actual outlet water temperature is less than the preset temperature, determining 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, determining that the heat pump air conditioner needs to reduce the frequency; The control of the heat pump air conditioner to gradually reduce the frequency between the current operating frequency and the optimal operating frequency, stopping the frequency reduction when the heat pump air conditioner meets a first condition, and continuing the frequency reduction until the heat pump air conditioner operates at the optimal operating frequency when the heat pump air conditioner does not meet the first condition, comprises: 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 to reduce the frequency according to a first frequency after the frequency reduction of the heat pump air conditioner, the optimal operating frequency, the actual outlet water 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, repeating 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, stopping the frequency reduction and keeping the current frequency.

2. The control method according to claim 1, characterized by, The determination of the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature comprises: Determining a standard frequency and a standard outlet water temperature corresponding to the ambient temperature according to the optimal energy efficiency frequency; Determining the optimal operating frequency 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 by, Before the determination of the optimal operating frequency according to the optimal energy efficiency frequency corresponding to the current ambient temperature, the control method further comprises: Determining a temperature interval corresponding to the ambient temperature; Determining the optimal energy efficiency frequency corresponding to the temperature interval.

4. The control method according to claim 1, characterized by, The control of the heat pump air conditioner to stop when the heat pump air conditioner still does not meet the first condition after the heat pump air conditioner operates at the optimal operating frequency comprises: If the first frequency is equal to the optimal operating frequency and the actual outlet water temperature is greater than the preset temperature, stopping the heat pump air conditioner; 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, keeping the current frequency.

5. The control method according to claim 1, characterized by, The control of the heat pump air conditioner step by step reduces the frequency between the current operating frequency and the optimal operating frequency, comprising: Each step of the heat pump air conditioner step by step reducing the frequency is the same; or Each step of the heat pump air conditioner step by step reducing the frequency is different.

6. A control device characterized by comprising: Comprise: The acquisition module acquires the environment temperature of the heat pump air conditioner, and acquires the optimal energy efficiency frequency corresponding to the current environment 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 environment temperature after determining that the heat pump air conditioner needs to reduce the frequency; The control module is used to control the heat pump air conditioner to step by step reduce the frequency between the current operating frequency and the optimal operating frequency, stop reducing the frequency when the heat pump air conditioner meets the first condition, continue to reduce the frequency until the heat pump air conditioner reduces to the optimal operating frequency when the heat pump air conditioner does not meet the first condition; The control module is also used to control the heat pump air conditioner to stop running if the heat pump air conditioner still cannot meet the first condition after reducing to the optimal operating frequency; The control module is also used to determine whether the heat pump air conditioner needs to reduce the frequency according to the actual outlet water temperature and the preset temperature, and determine that the heat pump air conditioner does not need to reduce the frequency if the actual outlet water temperature is less than the preset temperature; 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 reduce the frequency; The control module is also used to control the heat pump air conditioner to reduce the frequency once based on the current operating frequency of the heat pump air conditioner, and determine whether to continue to reduce the frequency according to the first frequency after the heat pump air conditioner reduces the frequency, the optimal operating frequency, the actual outlet water 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, stop reducing the frequency and keep the current frequency running.

7. A heat pump air conditioner characterized by comprising: 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 of any one of claims 1-5.

8. A storage medium, characterized by 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 of any one of claims 1-5.

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