Air conditioning refrigeration control method, device and air conditioner

Abstract

The present invention relates to the technical field of air conditioning, and provides a control method, device and air conditioner for air conditioning refrigeration. The control method for air conditioning refrigeration includes: obtaining the current refrigeration state of the air conditioner; when the air conditioning refrigeration is in an abnormal state, controlling the current compressor frequency and / or the opening of the electronic expansion valve of the air conditioner to adjust the current refrigeration effect coefficient so that the current refrigeration effect coefficient reaches a preset target refrigeration effect coefficient. The present invention detects the refrigeration operation state of the air conditioner, and when the refrigeration capacity of the air conditioner is abnormal, the air conditioner operation parameters can be automatically adjusted in time to achieve the expected refrigeration effect, ensure the stability of the refrigeration effect, and thus improve the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a control method and device for air conditioning refrigeration, and an air conditioner. Background Art

[0002] Air conditioning is a commonly used household appliance that can achieve cooling or heating. The cooling function is one of the most important operating functions of the air conditioning system. Especially in the hot summer, the air conditioner can adjust the indoor temperature to a comfortable temperature for the human body in a short time through the cooling mode to avoid the adverse effects of high temperature on the user's physiology and psychology.

[0003] The air conditioner mainly includes a compressor, condenser, electronic expansion valve, evaporator and other parts that are connected in a loop. If the compressor frequency is abnormal or there is too little refrigerant in the evaporator, it will directly affect the cooling effect of the current air conditioner, and the indoor temperature cannot reach the temperature set by the user, resulting in a poor user experience and may also cause economic losses to the user. Summary of the invention

[0004] The present invention provides a control method and device for air conditioning refrigeration and an air conditioner, so as to solve the defect in the related art that abnormal air conditioning refrigeration leads to poor refrigeration effect. The present invention detects the air conditioning refrigeration operation state and can automatically adjust the air conditioning operation parameters in time when the air conditioning refrigeration capacity is abnormal, so that the refrigeration effect reaches the expected one, the stability of the refrigeration effect is ensured, and the user experience is improved.

[0005] The present invention provides a method for controlling air conditioning refrigeration, comprising:

[0006] Get the current cooling status of the air conditioner;

[0007] When the air conditioner is in an abnormal state, the current compressor frequency and / or the electronic expansion valve opening of the air conditioner is controlled to adjust the current refrigeration effect coefficient so that the current refrigeration effect coefficient reaches a preset target refrigeration effect coefficient.

[0008] According to a method for controlling air conditioning refrigeration provided by the present invention, the current refrigeration effect coefficient satisfies the expression:

[0009]

[0010] K=(α×F 0 / F max )+(β×P 0 / P max );

[0011] Among them, C is the current cooling effect coefficient; T is the actual cooling time; Q is the cooling capacity of the air conditioner per unit time; K is the cooling influence coefficient; V is the indoor space volume; W 0is the cooling capacity required per unit volume per unit time; α is the weight of the compressor frequency on the cooling capacity; F 0 is the current compressor frequency; F max is the maximum operating frequency of the compressor in the refrigeration mode; β is the influence weight of the opening of the electronic expansion valve on the refrigeration capacity, β = 1-α; P 0 is the current opening of the electronic expansion valve; P max It is the upper limit of the opening degree of the electronic expansion valve in cooling mode.

[0012] According to a control method for air conditioning refrigeration provided by the present invention, the actual refrigeration time T satisfies the expression: T = γ × T 0 ;

[0013] And when 0 <V≤V 1 , γ=γ 1 ; When V 1 <V≤V 2 , γ=γ 2 ;

[0014] When V 2 <V≤V 3 , γ=γ 3 ; When V>V 3 , γ=γ 4 ;

[0015] Among them, γ is the correction parameter; T 0 Preset duration for cooling; V 1 、V 2 、V 3 is the preset indoor space volume; 1 , γ 2 , γ 3 is a preset correction parameter corresponding to the preset indoor space volume.

[0016] According to a control method for air conditioning refrigeration provided by the present invention, when the air conditioning refrigeration is in an abnormal state, the steps of controlling the current compressor frequency and / or the opening of the electronic expansion valve of the air conditioner to adjust the current refrigeration effect coefficient specifically include:

[0017] When the air conditioner is in an abnormal state of insufficient cooling capacity, increasing the compressor frequency and / or increasing the opening of the electronic expansion valve to increase the current cooling effect coefficient;

[0018] When the air conditioner is in an abnormal state of excessive cooling capacity, the compressor frequency is reduced and / or the opening of the electronic expansion valve is reduced to reduce the current cooling effect coefficient.

[0019] According to a method for controlling air conditioning refrigeration provided by the present invention, when the air conditioner is in an abnormal state of insufficient refrigeration capacity, the steps of increasing the compressor frequency and / or increasing the opening of the electronic expansion valve to increase the current refrigeration effect coefficient specifically include:

[0020] When the air conditioner is in an abnormal state of insufficient cooling capacity, the current compressor frequency is obtained;

[0021] If the current compressor frequency reaches the preset frequency, the electronic expansion valve opening is increased at a rate of increasing the first preset opening value per minute, and the operation is performed for a first preset time to increase the current refrigeration effect coefficient;

[0022] If the current refrigeration effect coefficient does not reach the preset target refrigeration effect coefficient after running for the first preset time, the compressor frequency is increased at a rate of increasing the first preset frequency value per minute, and the compressor is run for the second preset time to continue to increase the current refrigeration effect coefficient.

[0023] A method for controlling air conditioning refrigeration according to the present invention further comprises the steps of:

[0024] If the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after running for the second preset time, the air conditioner is controlled to send air conditioner cooling abnormality information to the user terminal.

[0025] According to a method for controlling air conditioning refrigeration provided by the present invention, after the step of obtaining the current compressor frequency when the air conditioner is in an abnormal state of insufficient cooling capacity, the method further includes:

[0026] If the current compressor frequency is less than the preset frequency and the current air conditioning energy consumption is within the preset energy consumption range, the compressor frequency is increased at a rate of increasing the second preset frequency value per minute and operated for a third preset time to increase the current refrigeration effect coefficient;

[0027] If the current refrigeration effect coefficient does not reach the preset target refrigeration effect coefficient after running for the third preset time, the opening of the electronic expansion valve is increased at a rate of increasing the second preset opening value per minute, and the operation is carried out for the fourth preset time to continue to increase the current refrigeration effect coefficient.

[0028] A method for controlling air conditioning refrigeration according to the present invention further comprises the steps of:

[0029] If the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after running for the fourth preset time, the air conditioner is controlled to send air conditioner cooling abnormality information to the user terminal.

[0030] According to a control method for air conditioning refrigeration provided by the present invention, when the air conditioner is in an abnormal state of excessive cooling capacity, the steps of reducing the compressor frequency and / or reducing the opening of the electronic expansion valve to reduce the current refrigeration effect coefficient specifically include:

[0031] When the air conditioner is in an abnormal state of excessive cooling capacity, the current compressor frequency is obtained;

[0032] If the current compressor frequency reaches the preset frequency, the electronic expansion valve opening is reduced at a rate of decreasing the third preset opening value per minute, and the operation is performed for a fifth preset time to reduce the current refrigeration effect coefficient;

[0033] If the current refrigeration effect coefficient does not reach the preset target refrigeration effect coefficient after running for the fifth preset time, the compressor frequency is reduced at a rate of lowering the third preset frequency value per minute, and the compressor is run for the sixth preset time to continue reducing the current refrigeration effect coefficient.

[0034] A method for controlling air conditioning refrigeration according to the present invention further comprises the steps of:

[0035] If the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after running for the sixth preset time, the air conditioner is controlled to send air conditioner cooling abnormality information to the user terminal.

[0036] According to a method for controlling air conditioning refrigeration provided by the present invention, after the step of obtaining the current compressor frequency when the air conditioner is in an abnormal state of excessive cooling capacity, the method further comprises:

[0037] If the current compressor frequency is greater than the preset frequency and the current air conditioning energy consumption is within the preset energy consumption range, the compressor frequency is reduced at a rate of decreasing the fourth preset frequency value per minute and operated for a seventh preset time to reduce the current refrigeration effect coefficient;

[0038] If the current refrigeration effect coefficient does not reach the preset target refrigeration effect coefficient after running for the seventh preset time, the opening of the electronic expansion valve is reduced at a rate of lowering the fourth preset opening value per minute, and the operation is continued for the eighth preset time to continue reducing the current refrigeration effect coefficient.

[0039] A method for controlling air conditioning refrigeration according to the present invention further comprises the steps of:

[0040] If the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after running for the eighth preset time, the air conditioner is controlled to send air conditioner cooling abnormality information to the user terminal.

[0041] According to a method for controlling air conditioning refrigeration provided by the present invention, the step of determining that the air conditioning refrigeration is in an abnormal state specifically includes:

[0042] Get the current indoor temperature;

[0043] If the current indoor temperature is lower than the preset target temperature, it is determined that the air conditioner is in an abnormal state of insufficient cooling capacity;

[0044] If the current indoor temperature is greater than the preset target temperature, it is determined that the air conditioner is in an abnormal state of excessive cooling capacity.

[0045] The present invention also provides an air conditioning refrigeration control device, comprising:

[0046] The acquisition module is used to obtain the current cooling status of the air conditioner;

[0047] The control module is used to control the current compressor frequency and / or the opening of the electronic expansion valve of the air conditioner when the air conditioner refrigeration is in an abnormal state, so as to adjust the current refrigeration effect coefficient so that the current refrigeration effect coefficient reaches a preset target refrigeration effect coefficient.

[0048] The present invention further provides an air conditioner, comprising: the above-mentioned air conditioning refrigeration control device, or the above-mentioned air conditioning refrigeration control method is adopted when performing refrigeration control.

[0049] The air conditioning refrigeration control method, device and air conditioner provided by the present invention obtain the current refrigeration state of the air conditioner, and when the air conditioning refrigeration is in an abnormal state, control the current compressor frequency and / or electronic expansion valve opening of the air conditioner to adjust the current refrigeration effect coefficient so that the current refrigeration effect coefficient reaches a preset target refrigeration effect coefficient, thereby making the indoor temperature reach the temperature set by the user, ensuring the stability of the refrigeration effect and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 It is a flow chart of the air conditioning refrigeration control method provided by the present invention;

[0052] Figure 2 It is a structural schematic diagram of the air conditioning refrigeration control device provided by the present invention;

[0053] Figure 3 It is a structural schematic diagram of the electronic device provided by the present invention.

[0054] Reference numerals:

[0055] 210: acquisition module; 220: control module;

[0056] 310: processor; 320: communication interface;

[0057] 330: memory; 340: communication bus. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] In the description of the embodiments of the present invention, it should be noted that the terms “first”, “second”, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0061] Combine the following Figure 1-Figure 3 The invention describes a control method and device for air conditioning and refrigeration, an air conditioner, and electronic equipment.

[0062] According to an embodiment of the first aspect of the present invention, referring to Figure 1 As shown, the air conditioning refrigeration control method provided by the present invention mainly includes:

[0063] S100: Obtain the current cooling state of the air conditioner.

[0064] S200. When the air conditioning refrigeration is in an abnormal state, control the current compressor frequency and / or the opening of the electronic expansion valve of the air conditioner to adjust the current refrigeration effect coefficient so that the current refrigeration effect coefficient reaches a preset target refrigeration effect coefficient, thereby making the current indoor temperature reach the user's preset target temperature.

[0065] Therefore, the embodiment of the present invention detects the refrigeration operation status of the air conditioner and can automatically adjust the relevant operation parameters of the air conditioner in time when the refrigeration capacity of the air conditioner is abnormal, so that the refrigeration effect meets the user's expectations and ensures the stability of the refrigeration effect, thereby improving the user experience.

[0066] According to one embodiment of the present invention, the current refrigeration effect coefficient satisfies the expression:

[0067]

[0068] K=(α×F 0 / F max )+(β×P 0 / P max );

[0069] Among them, C is the current cooling effect coefficient; T is the actual cooling time; Q is the cooling capacity of the air conditioner per unit time; K is the cooling influence coefficient; V is the indoor space volume, generally in cubic meters; W 0 is the cooling capacity required per unit volume per unit time; α is the weight of the compressor frequency on the cooling capacity; F 0 is the current compressor frequency; F max is the maximum operating frequency of the compressor in the refrigeration mode; β is the influence weight of the opening of the electronic expansion valve on the refrigeration capacity, β = 1-α; P 0 is the current opening of the electronic expansion valve; P max It is the upper limit of the opening degree of the electronic expansion valve in cooling mode.

[0070] The embodiment of the present invention can achieve precise adjustment of the refrigeration effect coefficient by comprehensively considering the above-mentioned multiple air-conditioning operating parameters and environmental parameters, thereby accurately and effectively meeting the user's refrigeration needs, and has the characteristics of high control accuracy and high reliability.

[0071] According to an embodiment of the present invention, the value range of the weight α of the influence of the compressor frequency on the cooling capacity may be between 0.1 and 0.55.

[0072] In addition, the cooling capacity per unit time Q of the air conditioner is generally related to the air conditioner capacity, and can be designed according to actual needs. For example, the cooling capacity per unit time Q of the air conditioner can range from 150W to 250W.

[0073] In addition, for the indoor space volume V, the user can input the length, width and height of the current indoor room or the indoor area and height or the volume of the entire indoor space through the user terminal APP that controls the air conditioner. To further improve intelligent control, relevant sensors can also be installed directly on the air conditioner to automatically detect the indoor space volume through the sensor.

[0074] According to one embodiment of the present invention, the actual cooling time T satisfies the expression: T = γ × T 0 , γ is the correction parameter; T 0 Preset duration for cooling.

[0075] Since the cooling time of the air conditioner is affected by environmental factors such as the space volume, which affects the cooling effect, the embodiment of the present invention corrects the preset cooling time of the air conditioner to improve the accuracy of the cooling time and ensure the cooling effect.

[0076] And, when 0 <V≤V 1 , γ=γ 1 ; When V 1 <V≤V 2 , γ=γ 2 ;

[0077] When V 2 <V≤V 3 , γ=γ 3 ; When V>V 3 , γ=γ 4 ;

[0078] Among them, V 1 、V 2 、V 3 is the preset indoor space volume; 1 , γ 2 , γ 3 is a preset correction parameter corresponding to the preset indoor space volume.

[0079] The embodiment of the present invention makes corrections based on the indoor space volume V. The larger V is, the longer the refrigeration operation time T is. By correcting the indoor space volume V and the corresponding correction coefficient, the accuracy of the refrigeration time can be improved, thereby achieving precise adjustment of the refrigeration effect coefficient and further improving the control accuracy of the refrigeration effect.

[0080] According to one embodiment of the present invention, when the air conditioner refrigeration is in an abnormal state, the steps of controlling the current compressor frequency and / or the opening of the electronic expansion valve of the air conditioner to adjust the current refrigeration effect coefficient specifically include: when the air conditioner is in an abnormal state of insufficient cooling capacity, increasing the compressor frequency and / or increasing the opening of the electronic expansion valve to increase the current refrigeration effect coefficient; when the air conditioner is in an abnormal state of excessive cooling capacity, reducing the compressor frequency and / or reducing the opening of the electronic expansion valve to reduce the current refrigeration effect coefficient.

[0081] Specifically, the abnormal state of air conditioning refrigeration includes two abnormal states: insufficient cooling capacity and excessive cooling capacity. When the cooling capacity is insufficient, the refrigeration strategy can be automatically adjusted to increase the compressor frequency and / or increase the opening of the electronic expansion valve, thereby increasing the current refrigeration effect coefficient so that it reaches the preset target refrigeration effect coefficient, thereby making the current indoor temperature reach the preset target temperature; similarly, when the cooling capacity is excessive, the refrigeration strategy can be automatically adjusted to reduce the compressor frequency and / or reduce the opening of the electronic expansion valve, thereby reducing the current refrigeration effect coefficient so that it reaches the preset target refrigeration effect coefficient, thereby making the current indoor temperature reach the preset target temperature.

[0082] Therefore, when the air conditioner is under-cooled or over-cooled, the embodiment of the present invention can automatically adjust according to the current state of the air conditioner so that the cooling effect reaches the expected level.

[0083] According to one embodiment of the present invention, when the air conditioner is in an abnormal state of insufficient cooling capacity, the steps of increasing the compressor frequency and / or increasing the opening of the electronic expansion valve to increase the current refrigeration effect coefficient specifically include: when the air conditioner is in an abnormal state of insufficient cooling capacity, obtaining the current compressor frequency; if the current compressor frequency reaches a preset frequency, increasing the opening of the electronic expansion valve at a rate of increasing a first preset opening value per minute, and running for a first preset time to increase the current refrigeration effect coefficient; if the current refrigeration effect coefficient does not reach the preset target refrigeration effect coefficient after running for the first preset time, increasing the compressor frequency at a rate of increasing the first preset frequency value per minute, and running for a second preset time to continue to increase the current refrigeration effect coefficient.

[0084] Furthermore, if the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after running for the second preset time, the air conditioner is controlled to send air conditioner cooling abnormality information to the user terminal.

[0085] For example, if the current compressor frequency is the preset frequency, the electronic expansion valve opening is adjusted first, and it is increased by 3 pls per minute. After the adjustment, if the preset target temperature has not been reached within the first preset time, the compressor frequency is adjusted again, and it is increased by 1 Hz per minute. After the adjustment, if the preset target temperature has not been reached within the second preset time, the user terminal APP reminds the user of abnormal air conditioning refrigeration information, specifically insufficient Freon supply. If the preset target temperature is reached, the adjustment is stopped and the operation is maintained.

[0086] According to one embodiment of the present invention, when the air conditioner is in an abnormal state of insufficient cooling capacity, after the step of obtaining the current compressor frequency, it also includes: if the current compressor frequency is less than the preset frequency, and the current air conditioner energy consumption is within the preset energy consumption range, the compressor frequency is increased at a rate of increasing the second preset frequency value per minute, and the operation is performed for a third preset time to increase the current refrigeration effect coefficient; if the current refrigeration effect coefficient does not reach the preset target refrigeration effect coefficient after running for the third preset time, the opening of the electronic expansion valve is increased at a rate of increasing the second preset opening value per minute, and the operation is performed for a fourth preset time to continue to increase the current refrigeration effect coefficient.

[0087] Furthermore, if the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after running for the fourth preset time, the air conditioner is controlled to send air conditioner cooling abnormality information to the user terminal.

[0088] For example, if the current air conditioning energy consumption is within the preset energy consumption range, and the current compressor frequency is less than the preset frequency, the compressor frequency is adjusted first, and it is increased by 1Hz per minute. If the preset target temperature is not reached within the third preset time after adjustment, the electronic expansion valve opening is adjusted again, and it is increased by 3pls per minute. If the preset target temperature is still not reached within the fourth preset time after adjustment, the user terminal APP reminds the user of abnormal air conditioning refrigeration information, specifically abnormal compressor operation. If the preset target temperature is reached, the adjustment is stopped and the operation is maintained.

[0089] Therefore, when the air conditioning cooling capacity is insufficient, the embodiment of the present invention can realize the control of air conditioning refrigeration abnormality by adjusting the specific compressor frequency and the opening of the electronic expansion valve according to the current operating conditions of the compressor frequency, and by controlling the adjustment sequence of the compressor frequency and the opening of the electronic expansion valve, it can adapt to different refrigeration abnormalities.

[0090] According to one embodiment of the present invention, when the air conditioner is in an abnormal state of excessive cooling capacity, the steps of reducing the compressor frequency and / or reducing the opening of the electronic expansion valve to reduce the current cooling effect coefficient specifically include: when the air conditioner is in an abnormal state of excessive cooling capacity, obtaining the current compressor frequency; if the current compressor frequency reaches the preset frequency, reducing the opening of the electronic expansion valve at a rate of lowering the third preset opening value per minute, and running for a fifth preset time to reduce the current cooling effect coefficient; if the current cooling effect coefficient does not reach the preset target cooling effect coefficient after running for the fifth preset time, reducing the compressor frequency at a rate of lowering the third preset frequency value per minute, and running for a sixth preset time to continue to reduce the current cooling effect coefficient.

[0091] Furthermore, if the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after running for the sixth preset time, the air conditioner is controlled to send air conditioner cooling abnormality information to the user terminal.

[0092] For example, if the current compressor frequency is the preset frequency, the electronic expansion valve opening is adjusted first, and it is lowered by 3 pls per minute. If it has not dropped to the preset target temperature within the fifth preset time after adjustment, the compressor frequency is adjusted again, and it is lowered by 1 Hz per minute. If it has not dropped to the set temperature within the sixth preset time after adjustment, the user terminal APP reminds the user of the abnormal air conditioning refrigeration excess and the system automatic adjustment information. If the preset target temperature is reached, the adjustment is stopped and the operation is maintained.

[0093] According to one embodiment of the present invention, when the air conditioner is in an abnormal state of excess cooling capacity, after the step of obtaining the current compressor frequency, it also includes: if the current compressor frequency is greater than the preset frequency, and the current air conditioning energy consumption is within the preset energy consumption range, the compressor frequency is reduced at a rate of reducing the fourth preset frequency value per minute, and the operation is performed for the seventh preset time to reduce the current refrigeration effect coefficient; if the current refrigeration effect coefficient does not reach the preset target refrigeration effect coefficient after running for the seventh preset time, the opening of the electronic expansion valve is reduced at a rate of reducing the fourth preset opening value per minute, and the operation is performed for the eighth preset time to continue to reduce the current refrigeration effect coefficient.

[0094] Furthermore, if the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after running for the eighth preset time, the air conditioner is controlled to send air conditioner cooling abnormality information to the user terminal.

[0095] For example, if the current air conditioning energy consumption is within the preset energy consumption range, and the current compressor frequency is greater than the preset frequency, the compressor frequency is adjusted first, and it is reduced by 1Hz per minute. If it has not dropped to the preset target temperature within the seventh preset time after adjustment, the electronic expansion valve opening is adjusted, and it is reduced by 3pls per minute. If it has not dropped to the preset target temperature within the eighth preset time after adjustment, the user terminal APP reminds the user of the air conditioning refrigeration surplus and the system automatic adjustment information. If the preset target temperature is reached, the adjustment is stopped and the operation is maintained.

[0096] Therefore, when the air conditioning cooling capacity is in excess, the embodiment of the present invention can control the air conditioning refrigeration abnormality by adjusting the specific compressor frequency and the opening of the electronic expansion valve according to the current operating conditions of the compressor frequency, and by controlling the adjustment sequence of the compressor frequency and the opening of the electronic expansion valve, it can adapt to different refrigeration abnormalities.

[0097] According to one embodiment of the present invention, the step of determining whether the air conditioner is in an abnormal state of cooling specifically includes: obtaining the current indoor temperature; if the current indoor temperature is lower than the preset target temperature, determining that the air conditioner is in an abnormal state of insufficient cooling capacity; if the current indoor temperature is higher than the preset target temperature, determining that the air conditioner is in an abnormal state of excessive cooling capacity.

[0098] Specifically, within a preset time period, the current indoor temperature is detected. If the current indoor temperature does not reach the temperature set by the user, the system determines that the current air-conditioning cooling capacity is insufficient. At this time, the control method of the present invention automatically adjusts the refrigeration strategy according to the current refrigeration effect coefficient, increases the compressor frequency or increases the opening of the electronic expansion valve; and if the current indoor temperature is greater than the temperature set by the user, the system determines that the current air-conditioning cooling capacity is excessive. At this time, the control method of the present invention automatically adjusts the refrigeration strategy according to the current refrigeration effect coefficient, reduces the compressor frequency or reduces the opening of the electronic expansion valve, so that the current indoor temperature reaches the user-set temperature.

[0099] When the air conditioner runs for the preset cooling time, the current cooling effect coefficient C continues to be less than the preset target cooling effect coefficient C 1 When the current indoor temperature does not reach the preset target temperature, it indicates that the cooling capacity is insufficient. The air conditioning system increases the compressor frequency and increases the opening of the electronic expansion valve to adjust the current cooling effect coefficient C to the preset target cooling effect coefficient C. 1 , that is, when the current indoor temperature reaches the preset target temperature, the adjustment stops and is maintained; similarly, when the air conditioner runs for the preset cooling time, the current cooling effect coefficient C continues to be greater than the preset target cooling effect coefficient C 1 When the current indoor temperature exceeds the preset target temperature, the system indicates that the cooling capacity is excessive, and the air conditioning system reduces the compressor frequency and the opening of the electronic expansion valve to adjust the current cooling effect coefficient C to the preset target cooling effect coefficient C. 1 , that is, when the current indoor temperature drops to the preset target temperature, stop adjusting and maintain it.

[0100] Therefore, the air conditioning refrigeration control method provided in the embodiment of the present invention can automatically adjust according to the current state of the air conditioner when the air conditioning refrigeration capacity is insufficient or excessive, so that the refrigeration effect meets the user's expectations, thereby improving the user experience.

[0101] The air-conditioning refrigeration control device provided by the present invention is described below. The air-conditioning refrigeration control device described below and the air-conditioning refrigeration control method described above can be referred to each other.

[0102] According to an embodiment of the second aspect of the present invention, referring to Figure 2 As shown, the present invention also provides an air conditioning refrigeration control device, which mainly includes: an acquisition module 210 and a control module 220. The acquisition module 210 is used to acquire the current refrigeration state of the air conditioner; the control module 220 is used to control the current compressor frequency and / or electronic expansion valve opening of the air conditioner when the air conditioner refrigeration is in an abnormal state, so as to adjust the current refrigeration effect coefficient so that the current refrigeration effect coefficient reaches a preset target refrigeration effect coefficient.

[0103] The air conditioning refrigeration control device provided in the embodiment of the present invention can control the air conditioning operating parameters and adjust the refrigeration effect coefficient when the air conditioning refrigeration is abnormal, so that the indoor temperature reaches the user-set temperature, ensure the stability of the refrigeration effect, and thus improve the user experience.

[0104] According to an embodiment of the third aspect of the present invention, the present invention further provides an air conditioner, comprising: the air conditioning refrigeration control device of the above embodiment, or the air conditioning refrigeration control method of the above embodiment is used when performing refrigeration control.

[0105] Since the air conditioner in the embodiment of the present invention includes the control device or method of the above embodiment, it has all the technical effects of the control device or method, which will not be described in detail here.

[0106] Figure 3 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 3 As shown, the electronic device may include: a processor 310, a communication interface 320, a memory 330 and a communication bus 340, wherein the processor 310, the communication interface 320 and the memory 330 communicate with each other through the communication bus 340. The processor 310 may call the logic instructions in the memory 330 to execute the air conditioning refrigeration control method, the method comprising: obtaining the current refrigeration state of the air conditioner; when the air conditioner refrigeration is in an abnormal state, controlling the current compressor frequency and / or the opening of the electronic expansion valve of the air conditioner to adjust the current refrigeration effect coefficient so that the current refrigeration effect coefficient reaches the preset target refrigeration effect coefficient.

[0107] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0108] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the air conditioning refrigeration control method provided by the above-mentioned methods, and the method includes: obtaining the current refrigeration state of the air conditioner; when the air conditioning refrigeration is in an abnormal state, controlling the current compressor frequency and / or electronic expansion valve opening of the air conditioner to adjust the current refrigeration effect coefficient so that the current refrigeration effect coefficient reaches a preset target refrigeration effect coefficient.

[0109] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the air conditioning refrigeration control method provided by the above-mentioned methods, the method comprising: obtaining the current refrigeration state of the air conditioner; when the air conditioning refrigeration is in an abnormal state, controlling the current compressor frequency and / or electronic expansion valve opening of the air conditioner to adjust the current refrigeration effect coefficient so that the current refrigeration effect coefficient reaches a preset target refrigeration effect coefficient.

[0110] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0111] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling air conditioning refrigeration, characterized in that: Including: Obtain the current cooling state of the air conditioner; In the case where the air conditioner is in an abnormal cooling state, control the current compressor frequency and / or the opening degree of the electronic expansion valve of the air conditioner to adjust the current cooling effect coefficient so that the current cooling effect coefficient reaches a preset target cooling effect coefficient; The current cooling effect coefficient satisfies the expression: K=(α×F0 / F max )+(β×P0 / P max ); Among them, C is the current cooling effect coefficient; T is the actual cooling time; Q is the cooling capacity of the air conditioner per unit time; K is the cooling influence coefficient; V is the indoor space volume; W0 is the cooling capacity required per unit volume per unit time; α is the weight of the compressor frequency on the cooling capacity; F0 is the current compressor frequency; F max is the maximum operating frequency of the compressor in the refrigeration mode; β is the influence weight of the electronic expansion valve opening on the refrigeration capacity, β = 1-α; P0 is the current electronic expansion valve opening; P max It is the upper limit of the opening degree of the electronic expansion valve in cooling mode; The actual cooling duration T satisfies the expression: T = γ×T0; And when 0<V≤V1, γ = γ1; when V1<V≤V2, γ = γ2; When V2<V≤V3, γ = γ3; when V>V3, γ = γ4; Where γ is a correction parameter; T0 is the preset cooling duration; V1, V2, and V3 are preset indoor space volumes; γ1, γ2, γ3, and γ4 are preset correction parameters corresponding to the preset indoor space volumes.

2. The air conditioning refrigeration control method according to claim 1, characterized in that: In the case where the air conditioner is in an abnormal cooling state, the step of controlling the current compressor frequency and / or the opening degree of the electronic expansion valve of the air conditioner to adjust the current cooling effect coefficient specifically includes: When the air conditioner is in an abnormal state of insufficient cooling capacity, increase the compressor frequency and / or increase the opening degree of the electronic expansion valve to increase the current cooling effect coefficient; When the air conditioner is in an abnormal state of excessive cooling capacity, decrease the compressor frequency and / or decrease the opening degree of the electronic expansion valve to decrease the current cooling effect coefficient.

3. The air conditioning refrigeration control method according to claim 2, characterized in that: When the air conditioner is in an abnormal state of insufficient cooling capacity, the step of increasing the compressor frequency and / or increasing the opening degree of the electronic expansion valve to increase the current cooling effect coefficient specifically includes: When the air conditioner is in an abnormal state of insufficient cooling capacity, obtain the current compressor frequency; If the current compressor frequency reaches the preset frequency, increase the opening degree of the electronic expansion valve at a rate of increasing the first preset opening value per minute and operate for the first preset duration to increase the current cooling effect coefficient; If the current cooling effect coefficient does not reach the preset target cooling effect coefficient after operating for the first preset duration, increase the compressor frequency at a rate of increasing the first preset frequency value per minute and operate for the second preset duration to continue increasing the current cooling effect coefficient.

4. The air conditioning refrigeration control method according to claim 3, characterized in that: It further includes the step: If the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after operating for the second preset duration, control the air conditioner to send an air conditioner cooling abnormality message to the user terminal.

5. The air conditioning refrigeration control method according to claim 3, characterized in that: After the step of obtaining the current compressor frequency when the air conditioner is in an abnormal state of insufficient cooling capacity, it further includes: If the current compressor frequency is less than the preset frequency and the current air conditioner energy consumption is within the preset energy consumption range, increase the compressor frequency at a rate of increasing the second preset frequency value per minute and operate for the third preset duration to increase the current cooling effect coefficient; If the current cooling effect coefficient does not reach the preset target cooling effect coefficient after operating for the third preset duration, increase the opening degree of the electronic expansion valve at a rate of increasing the second preset opening value per minute and operate for the fourth preset duration to continue increasing the current cooling effect coefficient.

6. The air conditioning refrigeration control method according to claim 5, characterized in that: It further includes the step: If the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after operating for the fourth preset duration, control the air conditioner to send an air conditioner cooling abnormality message to the user terminal.

7. The air conditioning refrigeration control method according to claim 2, characterized in that: When the air conditioner is in an abnormal state of excessive cooling capacity, the step of reducing the compressor frequency and / or reducing the opening of the electronic expansion valve to reduce the current cooling effect coefficient specifically includes: When the air conditioner is in an abnormal state of excessive cooling capacity, the current compressor frequency is obtained; If the current compressor frequency reaches the preset frequency, the electronic expansion valve opening is reduced at a rate of decreasing the third preset opening value per minute, and the operation is performed for a fifth preset time to reduce the current refrigeration effect coefficient; If the current refrigeration effect coefficient does not reach the preset target refrigeration effect coefficient after running for the fifth preset time, the compressor frequency is reduced at a rate of lowering the third preset frequency value per minute, and the compressor is run for the sixth preset time to continue reducing the current refrigeration effect coefficient.

8. The air conditioning refrigeration control method according to claim 7, characterized in that: Also includes the steps: If the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after running for the sixth preset time, the air conditioner is controlled to send air conditioner cooling abnormality information to the user terminal.

9. The air conditioning refrigeration control method according to claim 7, characterized in that: After the step of obtaining the current compressor frequency when the air conditioner is in an abnormal state of excessive cooling capacity, the method further includes: If the current compressor frequency is greater than the preset frequency and the current air conditioning energy consumption is within the preset energy consumption range, the compressor frequency is reduced at a rate of decreasing the fourth preset frequency value per minute and operated for a seventh preset time to reduce the current refrigeration effect coefficient; If the current refrigeration effect coefficient does not reach the preset target refrigeration effect coefficient after running for the seventh preset time, the opening of the electronic expansion valve is reduced at a rate of lowering the fourth preset opening value per minute, and the operation is continued for the eighth preset time to continue reducing the current refrigeration effect coefficient.

10. The air conditioning refrigeration control method according to claim 9, characterized in that: Also includes the steps: If the current cooling effect coefficient still does not reach the preset target cooling effect coefficient after running for the eighth preset time, the air conditioner is controlled to send air conditioner cooling abnormality information to the user terminal.

11. The air conditioning refrigeration control method according to claim 1, characterized in that: The step of determining that the air conditioning refrigeration is in an abnormal state specifically includes: Get the current indoor temperature; If the current indoor temperature is lower than the preset target temperature, it is determined that the air conditioner is in an abnormal state of insufficient cooling capacity; If the current indoor temperature is greater than the preset target temperature, it is determined that the air conditioner is in an abnormal state of excessive cooling capacity.

12. A control device for air conditioning refrigeration, characterized in that: According to the air conditioning refrigeration control method according to any one of claims 1 to 11, the air conditioning refrigeration control device comprises: The acquisition module is used to obtain the current cooling status of the air conditioner; The control module is used to control the current compressor frequency and / or the opening of the electronic expansion valve of the air conditioner when the air conditioner refrigeration is in an abnormal state, so as to adjust the current refrigeration effect coefficient so that the current refrigeration effect coefficient reaches a preset target refrigeration effect coefficient.

13. An air conditioner, characterized in that: include: The air conditioning and refrigeration control device according to claim 12, or the air conditioning and refrigeration control method according to any one of claims 1 to 11 is used when performing refrigeration control.

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