CN112254299B

CN112254299B - Method and device for controlling refrigeration equipment and refrigeration equipment

Info

Publication number: CN112254299B
Application number: CN202011050239.1A
Authority: CN
Inventors: 杨中锋; 宁贻江; 李凯明; 徐军瑞; 刘超超
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-10-29
Anticipated expiration: 2040-09-29
Also published as: CN112254299A

Abstract

The application relates to the technical field of refrigeration equipment, and discloses a method for controlling the refrigeration equipment, which comprises the following steps: determining the accumulated running time of the refrigeration equipment; determining the value range of the maximum operating frequency of the compressor of the refrigeration equipment according to the accumulated operating duration; detecting the parameter change condition in a set time length after the compressor is started; determining the maximum operating frequency within a value range according to the parameter change condition; the compressor is controlled to operate within a maximum operating frequency. The value range of the maximum operating frequency of the compressor is determined according to the accumulated operating time of the refrigeration equipment, the maximum operating frequency is determined from the value range according to the parameter change condition of the compressor in the starting stage, and the maximum operating frequency of the compressor is adjusted by combining the accumulated operating time of the refrigeration equipment and the parameter change condition of the compressor in the starting stage, so that the compressor can operate in a safer frequency range. The application also discloses a device for controlling the refrigeration equipment and the refrigeration equipment.

Description

Method and device for controlling refrigeration equipment and refrigeration equipment

Technical Field

The present application relates to the technical field of refrigeration equipment, and for example, to a method and an apparatus for controlling refrigeration equipment, and refrigeration equipment.

Background

At present, most of the control methods for compressor frequency in the prior art select a preset compressor operating frequency corresponding to an ambient temperature according to a corresponding relationship between the ambient temperature and the compressor operating frequency, and control the inverter air conditioner by using the preset compressor operating frequency. The same frequency is always kept constant in a certain section of the environment temperature, and the maximum operation frequency set by the system is also always kept constant. The maximum operating frequency of the compressor is determined when the air conditioner leaves a factory and is not changed, and the maximum operating frequency is fixed.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: the maximum operation frequency of a compressor of the refrigeration equipment is fixed and unchanged, and certain potential safety hazards exist.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a method and a device for controlling refrigeration equipment and the refrigeration equipment, and aims to solve the technical problem that the maximum operation frequency of a compressor of the refrigeration equipment is fixed and the refrigeration equipment has potential safety hazards.

In some embodiments, a method for controlling a refrigeration appliance, comprises: determining the accumulated running time of the refrigeration equipment; determining the value range of the maximum operating frequency of the compressor of the refrigeration equipment according to the accumulated operating duration; detecting the parameter change condition in a set time length after the compressor is started; determining the maximum operating frequency within a value range according to the parameter change condition; the compressor is controlled to operate within a maximum operating frequency.

In some embodiments, an apparatus for controlling a refrigeration device includes a processor and a memory storing program instructions, the processor being configured to, when executing the program instructions, perform a method for controlling a refrigeration device as provided by the foregoing embodiments.

In some embodiments, the refrigeration appliance comprises an apparatus for controlling a refrigeration appliance as provided in the previous embodiments.

The method and the device for controlling the refrigeration equipment and the refrigeration equipment provided by the embodiment of the disclosure can realize the following technical effects: the value range of the maximum operating frequency of the compressor is determined according to the accumulated operating time of the refrigeration equipment, the maximum operating frequency is determined from the value range according to the parameter change condition of the compressor in the starting stage, and the maximum operating frequency of the compressor is adjusted by combining the accumulated operating time of the refrigeration equipment and the parameter change condition of the compressor in the starting stage, so that the compressor can operate in a safer frequency range.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic diagram of a method for controlling a refrigeration appliance provided by an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another method for controlling a refrigeration appliance provided by an embodiment of the present disclosure;

fig. 3 is a schematic diagram of an apparatus for controlling a refrigeration device according to an embodiment of the disclosure.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

As shown in fig. 1, an embodiment of the present disclosure provides a method for controlling a refrigeration apparatus, including: the method comprises the following steps:

s01, determining the accumulated running time of the refrigeration equipment;

s02, determining the value range of the maximum operation frequency of the compressor of the refrigeration equipment according to the accumulated operation duration;

s03, detecting the parameter change condition within the set time length after the compressor is started;

s04, determining the maximum operation frequency in the value range according to the parameter change condition;

and S05, controlling the compressor to operate in the maximum operation frequency.

The value range of the maximum operating frequency of the compressor is determined according to the accumulated operating time of the refrigeration equipment, the maximum operating frequency is determined from the value range according to the parameter change condition of the compressor in the starting stage, and the maximum operating frequency of the compressor is adjusted by combining the accumulated operating time of the refrigeration equipment and the parameter change condition of the compressor in the starting stage, so that the compressor can operate in a safer frequency range. Therefore, the refrigeration equipment is always in a safe operation state, and the service life of the refrigeration equipment is prolonged.

The load of the system is different when the refrigeration equipment runs for different accumulated running time, and if the maximum running frequency is kept unchanged, the refrigeration equipment may have a fault. For example, when the refrigeration equipment is operated for 3 years, 5 years or 10 years in an accumulated manner, the load that the system can bear is also changed, and if the maximum operating frequency of the compressor is maintained at the maximum operating frequency set at the factory, the refrigeration equipment is likely to malfunction during operation. Optionally, the accumulated operating time period of the compressor is obtained as the accumulated operating time period of the refrigeration equipment.

The longer the accumulated operation time of the refrigeration equipment is, the smaller the maximum operation frequency should be properly adjusted, so that the service life of the refrigeration equipment can be prolonged. According to the accumulated operation time, the value range of the maximum operation frequency of the compressor is determined, so that the refrigeration equipment can operate at the safer maximum operation frequency, and the potential safety hazard is reduced.

Optionally, determining a value range of a maximum operating frequency of a compressor of the refrigeration equipment according to the accumulated operating time includes:

under the condition that the accumulated operation time length T is less than T1, the value range of the maximum operation frequency is fmax 11-fmax 14;

under the condition that the accumulated operation time length T is less than or equal to T2 and less than or equal to T1, the value range of the maximum operation frequency is fmax 21-fmax 24;

under the condition that the accumulated operation time length T is less than or equal to T3 and less than or equal to T2, the value range of the maximum operation frequency is fmax 31-fmax 34;

wherein fmax11 > fmax21 > fmax31, fmax14 > fmax24 > fmax 34.

Alternatively, fmax11 > fmax24, fmax21 > fmax 34. Therefore, the value ranges of the maximum operating frequency are not crossed, and the maximum operating frequency takes values in different value ranges under the condition that the accumulated operating time is in different grades, so that the operating safety of the compressor can be improved.

It can be seen from this embodiment that the longer the accumulated operating time, the smaller the maximum and minimum values of the value range are correspondingly reduced, so that the maximum operating frequency of the compressor can be always taken within a safe range. By the embodiment, the accumulated running time is divided into a plurality of grades, the acquired accumulated running time of the compressor is matched with the corresponding grade, and the value range of the maximum running frequency can be determined. Optionally, the refrigeration equipment is provided with an operation duration determining module, and the operation duration determining module is used for acquiring the accumulated operation duration of the refrigeration equipment.

Alternatively, T1, T2, and T3 are fixed values. Setting T1, T2, and T3 to fixed values facilitates comparison of the cumulative operating time periods for the refrigeration appliance. Alternatively, T1 is 3 years, T2 is 5 years, and T3 is 10 years. In this way, the accumulated operating time period of the refrigeration apparatus may be compared with T1, T2, and T3.

Alternatively, T3 is set according to the regional climate. According to the climate of the area where the refrigeration equipment is located, a larger cumulative operating time is set, and the refrigeration equipment can adjust the maximum operating frequency of the compressor according to the control method in the cumulative operating time. Optionally, in an area with a large annual high-low temperature difference, such as a desert area, the temperature of the area is more than 35 ℃ or less than-10 ℃, or the ambient use environment is severe, T3 is 8 years; in the case where the regional climate is stable throughout the year or the ambient use environment is good, T3 may be taken as 12 years. The refrigeration equipment can be determined according to the regional climate and the use environment, so that the accumulated running time is more suitable for the actual load state of the refrigeration equipment. The service environment comprises the environment temperature of the installation space of the air conditioner outdoor unit, and is closer to the actual environment temperature condition of the air conditioner outdoor unit than the regional climate. For example, when the refrigeration equipment is an air conditioner, the installation space of the air conditioner outdoor unit is small, so that the heat dissipation of the air conditioner outdoor unit is slow, and the actual environment temperature of the actual air conditioner outdoor unit is higher; for another example, when the outdoor unit is installed in a position facing the sun, the actual ambient temperature is higher than that of the outdoor unit installed in a position facing the shadow; and so on. Optionally, an initial value of T3 is determined according to the regional climate, and then the final value of T3 is determined by correcting the value of T3 to be 0.5-2 according to the use environment of the refrigeration equipment.

Alternatively, T1 is 60% to 70% of T3 and T2 is 80% to 90% of T3. Thus, T1 and T2 are both determined from the value of T3, illustratively, T3-15 years, T2-80% 15-12 years, and T1-60% 15-9 years. In areas with severe climates, the percentage may be a lower limit.

After the value range of the maximum operating frequency of the compressor is determined, the parameter change condition within the set time length after the compressor is started is detected, and the maximum operating frequency is determined within the value range according to the parameter change condition. In this way, a more accurate and appropriate maximum operating frequency can be further determined. After the compressor is started, parameters such as the current of the compressor or the discharge temperature of the compressor will change, and the compressor will rise when started. When the accumulated running time of the compressor exceeds a certain time, the running state of the compressor will gradually become worse, the parameter change in the set time after starting will change, and the previously set target parameter should be automatically adjusted accordingly. The approximate condition of the compressor can be judged through accumulating the operation duration, and a value range of the maximum operation frequency is determined; the actual operation condition of the compressor can be further determined through the parameter change condition in the preset time length after the compressor is started, so that the more accurate and appropriate maximum operation frequency can be determined.

Under the condition that the current rising rate of the compressor is high, the system is indicated to be abnormal or the surrounding use environment is severe, and the maximum operation frequency can be reduced to a small extent, so that the system can always operate in a safe range; under the condition that the current rising rate of the compressor is low, the system pressure is low, the air conditioner operates normally, at the moment, the maximum operation frequency can be increased, the system capacity can be improved, and the user experience effect is improved.

Optionally, the set time period is 2 min. And detecting the parameter change condition within 2min after the compressor is started, and further determining the more appropriate maximum operating frequency of the compressor.

In some embodiments, determining the value range of the maximum operating frequency of the compressor of the refrigeration equipment according to the accumulated operating time period includes:

under the condition that the accumulated operation time length is less than the first time length, determining a value range as a first range interval;

determining the value range as a second range interval under the condition that the accumulated operation time length is greater than or equal to the first time length and less than the second time length;

wherein the minimum value of the first range interval is greater than the maximum value of the second range interval.

Under the condition that the accumulated operation time length is less than the first time length, the accumulated operation time length of the refrigeration equipment is short, the maximum operation frequency of the compressor can be taken within a higher range at the moment, and the compressor can safely operate; under the condition that the accumulated operation time length is greater than or equal to the first time length and less than the second time length, the accumulated operation time length of the refrigeration equipment is indicated to be a medium time length, the maximum operation frequency of the compressor can be taken within a range interval which is reduced relative to the first range interval, and the compressor can be operated safely. Through the embodiment, the value range of the maximum operating frequency of the compressor can be determined according to the accumulated operating time of the refrigeration equipment.

In some embodiments, determining the value range of the maximum operating frequency of the compressor of the refrigeration equipment according to the accumulated operating time period further includes:

determining the value range as a third range interval under the condition that the accumulated operation time length is greater than or equal to the second time length and less than the third time length;

wherein the minimum value of the second range interval is smaller than the maximum value of the third range interval.

And under the condition that the accumulated operation time length is greater than or equal to the second time length and less than the third time length, the accumulated operation time length of the refrigeration equipment is longer, the value of the compressor should be taken in a lower range interval, and the minimum value of the second range interval is smaller than the maximum value of the third range interval, so that the compressor can be ensured to be operated safely.

In some embodiments, the maximum value of the second range interval and the maximum value of the third range interval are both determined from the maximum value of the first range interval. In the case of specifying the maximum values of the second range section and the third range section, the specification may be performed based on the maximum value of the first range section, and for example, the maximum value of the second range section is 80% to 90% of the maximum value of the first range section, and the maximum value of the third range section is 60% to 70% of the maximum value of the first range section. Therefore, the maximum values of the second range interval and the third range interval which are reasonable can be determined, and the maximum operation frequency rate of the refrigeration equipment can be determined in a safe value range under different accumulated operation time lengths. Optionally, the maximum value of the first range interval is a maximum operating frequency of the compressor set when the refrigeration equipment is shipped.

In some embodiments, before determining the value range of the maximum operating frequency of the compressor of the refrigeration equipment according to the accumulated operating time length, the method further includes: and controlling the compressor to operate at a preset frequency under the condition that the accumulated operation time is longer than the third time.

The accumulated operation time is longer than the third time, which indicates that the accumulated operation time of the refrigeration equipment is too long, and the potential safety hazard still exists even if the compressor operates in the maximum operation frequency limited by the third range interval. At this moment, the compressor is directly controlled to run at a preset frequency, namely, the compressor is enabled to run at a fixed frequency, and frequency conversion is not carried out any more, so that the safety of the refrigeration system is ensured. And controlling the compressor to run at a preset frequency, so that the subsequent detection of the parameter change condition within a set time length after the compressor is started is not executed, the maximum running frequency is determined within a value range according to the parameter change condition, and the compressor is controlled to run within the maximum running frequency.

In some embodiments, in the case that the refrigeration equipment is an air conditioner, the preset frequency is determined according to a ratio of an area of a room where the air conditioner is located to the preset area, and a maximum operating frequency in the third range interval. Thus, the air conditioner can deliver a suitable amount of cooling or heating to the room when the compressor is operated at a preset frequency. The room area can be measured and determined by arranging a distance measuring sensor in the air conditioner, the room area can also be set in a manual input mode, and the preset area is set on the air conditioner in advance. The preset frequency is determined according to the maximum operation frequency in the third range interval, the third range interval is smaller in value compared with the first and second range intervals, and the preset frequency is set to be lower under the condition that the accumulated operation time of the refrigeration equipment is too long, so that the safe operation of the refrigeration equipment can be ensured.

Alternatively, the preset frequency ft may be determined according to the data correspondence in table 1. The table shows the corresponding relationship between the ratio of the room area to the preset area and the preset frequency. And defining the ratio of the room area to the preset area as a room area ratio alpha, and determining a proper preset frequency ft according to the value of the alpha.

TABLE 1

Room area ratio alpha (A/A0)	Predetermined frequency ft
		α＜0.8	ft1
0.8≤α＜1.2	ft2
		α≥1.2	ft3

Alternatively, ft1 < ft2 < ft 3. The larger the room area ratio, the higher the amount of cooling or heating required, and the greater the preset frequency. Alternatively, ft1 may take a value of 0.8 × fmax34, ft2 may take a value of 0.8 × fmax33, and ft3 may take a value of 0.8 × fmax32, wherein fmax32, fmax33, and fmax34 are values within a third range interval. In this way, the preset frequency can be determined in combination with the values in the third range interval.

In some embodiments, where the refrigeration appliance is a refrigerator or freezer, the preset frequency is selected within a third range interval. And selecting the preset frequency in the third range interval can ensure that the refrigerator or the freezer can be safely operated.

In some embodiments, the parameter change comprises a rate of current rise or a rate of discharge rise of the compressor. The current rise rate or the exhaust rise rate of the compressor can reflect the performance state of the compressor in actual operation, and the appropriate maximum operation frequency can be determined by utilizing the parameters. Optionally, the exhaust gas rise rate is an exhaust gas temperature rise rate. A temperature sensor can be arranged at the air outlet to detect the air exhaust temperature, and the air exhaust temperature rising rate can reflect the performance state of the compressor within the preset time of the compressor starting.

In some embodiments, the rate of increase of the current to the compressor or the rate of increase of the discharge air is divided into a plurality of levels, each level corresponding to a value of a maximum operating frequency within a range of values. In this way, the maximum operating frequency can be determined within the range of values according to the class to which the compressor current rise rate or the discharge rise rate belongs.

Optionally, the maximum operating frequency is determined by the correspondence between the accumulated operating time length and the current rise rate in table 2. In the table, Iv represents the current rise rate, and fmax 11-fmax 34 are the maximum operating frequency of the compressor.

TABLE 2

Cumulative running time T	Iv＜Iv1	Iv1≤Iv＜Iv2	Iv2≤Iv＜Iv3	Iv≥Iv3
					T＜T1	fmax11	fmax12	fmax13	fmax14
T1≤T＜T2	fmax21	fmax22	fmax23	fmax24
					T2≤T＜T3	fmax31	fmax32	fmax33	fmax34

Optionally, after controlling the compressor to operate at the preset frequency, the method further includes:

if the refrigeration equipment is an air conditioner, determining the exhaust temperature of the compressor and the operation mode of the air conditioner;

under the condition that the exhaust temperature is greater than a preset value, if the air conditioner is in a refrigerating state, controlling the indoor fan to operate at the lowest rotating speed; and if the air conditioner is in a heating state, controlling the indoor fan to operate at the highest rotating speed.

The exhaust temperature is higher than the preset value, which indicates that the air conditioner is still unsafe when running at the preset frequency, the indoor fan runs at the lowest rotating speed in the refrigerating state of the air conditioner, and the indoor fan runs at the highest rotating speed in the heating state, so that the system pressure can be reduced, the overall power of the air conditioner is reduced, and the safety of the air conditioner is improved.

Optionally, after controlling the compressor to operate at the preset frequency, the method further includes: and sending a prompt signal to prompt the user. After the compressor running is accumulated for a long time, the compressor cannot be stopped and wasted at once, so that the compressor runs at a preset frequency, and the user is warned in advance, so that the user can know the risk in time to make a response.

Illustratively, as shown in connection with fig. 2, a method for controlling a refrigeration appliance includes:

s11, starting;

s12, determining the accumulated running time of the compressor;

s13, judging whether the accumulated running time of the compressor is greater than or equal to T3, if so, executing a step S14, and if not, executing S15;

s14, controlling the compressor to run at a preset frequency and displaying warning information;

s15, determining the value range of the maximum operation frequency of the compressor according to the accumulated operation duration;

s16, detecting the parameter change condition within the set time length after the compressor is started;

s17, determining the maximum operation frequency in the value range according to the parameter change condition;

and S18, controlling the compressor to operate in the maximum operation frequency.

By the embodiment, the compressor can be operated at the preset frequency when the accumulated operation time of the compressor is too long, and the maximum operation frequency of the compressor is adjusted to operate the compressor within the maximum operation frequency when the accumulated operation time of the compressor is lower than T3. On the basis of ensuring the safety, the user experience effect or the use effect is improved as much as possible, and the service life of the refrigeration equipment is prolonged to a certain extent.

The disclosed embodiment also provides a device for controlling a refrigeration apparatus, which comprises a processor and a memory storing program instructions, wherein the processor is configured to execute the method for controlling the refrigeration apparatus provided by any one of the foregoing embodiments when executing the program instructions.

As shown in fig. 3, an apparatus for controlling a refrigeration device according to an embodiment of the present disclosure includes a processor (processor)100 and a memory (memory) 101. Optionally, the apparatus may also include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may invoke logic instructions in the memory 101 to perform the method for controlling a refrigeration appliance of the above-described embodiments.

In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.

The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, i.e., implements the method for controlling a refrigeration device in the above-described embodiments.

The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.

The embodiment of the disclosure provides a product (for example, a computer, a mobile phone and the like) comprising the device for controlling the refrigeration equipment.

The disclosed embodiments provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling a refrigeration appliance.

The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described method for controlling a refrigeration appliance.

The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.

The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.

The embodiment of the disclosure also provides a refrigeration device, which comprises the device for controlling the refrigeration device as provided in the previous embodiment. Refrigeration plant passes through the device, can adjust the maximum operating frequency of compressor, promotes user experience effect or result of use as far as possible on the basis of guaranteeing the security to refrigeration plant's service life is prolonged to a certain extent.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.

Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims

1. A method for controlling a refrigeration appliance, comprising:

determining the accumulated running time of the refrigeration equipment;

determining the value range of the maximum operating frequency of the compressor of the refrigeration equipment according to the accumulated operating time, specifically comprising: determining the value range as a first range interval under the condition that the accumulated running time is less than a first time; determining the value range as a second range interval under the condition that the accumulated operation time length is greater than or equal to a first time length and less than a second time length; determining the value range as a third range interval under the condition that the accumulated running time is greater than or equal to the second time and less than a third time; wherein the minimum value of the second range interval is greater than the maximum value of the third range interval, and the minimum value of the first range interval is greater than the maximum value of the second range interval;

detecting the parameter change condition within a set time length after the compressor is started, wherein the parameter change condition comprises the current rising rate or the exhaust rising rate of the compressor;

determining the maximum operating frequency within the value range according to the parameter change condition, wherein the smaller the current rising rate is, the larger the maximum operating frequency is;

controlling the compressor to operate within the maximum operating frequency.

2. Method according to claim 1, characterized in that the maximum value of the second range interval and the maximum value of the third range interval are each determined from the maximum value of the first range interval.

3. The method of claim 1, further comprising, prior to determining the range of maximum operating frequencies of the compressor of the refrigeration appliance based on the accumulated operating time period:

and controlling the compressor to operate at a preset frequency under the condition that the accumulated operation time is longer than the third time.

4. The method according to claim 3, wherein, in the case that the refrigeration equipment is an air conditioner, the preset frequency is determined according to a ratio of an area of a room where the air conditioner is located to a preset area, and a maximum operation frequency in a third range interval.

5. Method according to any one of claims 1 to 4, characterized in that the current rise rate or the discharge rise rate of the compressor is divided into a plurality of levels, each of said levels corresponding to a value of a maximum operating frequency within said range of values.

6. An apparatus for controlling a refrigeration device, comprising a processor and a memory storing program instructions, characterized in that the processor is configured to carry out the method for controlling a refrigeration device according to any one of claims 1 to 5 when executing the program instructions.

7. Refrigeration appliance, characterized in that it comprises a device for controlling a refrigeration appliance according to claim 6.