Air conditioner control method and device, air conditioner and storage medium

Abstract

The invention relates to the technical field of intelligent air conditioners, and discloses an air conditioner control method and device, an air conditioner and a storage medium. The air conditioner compressor comprises a bypass electronic expansion valve. The method comprises the steps that under the condition that it is determined that the air conditioner compressor is in deloading operation, the current pressure ratio between the current exhaust pressure and the current suction pressure of the compressor is obtained, and the current guide vane valve opening degree of an air inlet guide vane of the compressor is obtained; under the condition that the compressor is determined to be in a noise control mode according to the current pressure ratio, the current opening degree of the guide vane valve, the current water temperature and the current load state of the compressor, the current initial opening degree and the current maximum opening degree of the bypass electronic expansion valve are determined according to the current pressure ratio; and after the bypass electronic expansion valve is adjusted to the current initial opening degree, the bypass electronic expansion valve is controlled to increase operation until the current maximum opening degree is reached in a first set period. Therefore, the noise caused by the air inlet guide vane in the deloading operation process of the air conditioner is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of intelligent air conditioners, for example, to a method, a device, an air conditioner and a storage medium for air conditioner control. Background Art

[0002] Air conditioners are now a must-have appliance for homes and offices, especially in summer and winter, when they are used for long periods of time. In some large air conditioning units, during the load reduction process of the air conditioning compressor, the inlet guide vane (IGV) inside the compressor will be closed, that is, the guide vane valve opening will become smaller. In this way, if the pressure ratio between the exhaust pressure and the suction pressure of the air conditioning compressor is relatively large, the IGV will vibrate, causing the entire air conditioning unit to generate a large noise, thereby affecting the performance of the air conditioning.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0005] The embodiments of the present disclosure provide a method, device, air conditioner and storage medium for air conditioner control to solve the technical problem of relatively loud noise during load-reduced operation of the air conditioner. The air conditioner compressor includes a bypass electronic expansion valve.

[0006] In some embodiments, the method comprises:

[0007] When it is determined that the air conditioning compressor is in a reduced-load operation, a current pressure ratio between a current exhaust pressure and a current suction pressure of the compressor is obtained, and a current guide vane valve opening of an intake guide vane of the compressor is obtained;

[0008] When it is determined that the compressor is in the noise control mode according to the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load state of the compressor, the current initial opening and the current maximum opening of the bypass electronic expansion valve are determined according to the current pressure ratio;

[0009] After the bypass electronic expansion valve is adjusted to the current initial opening, the bypass electronic expansion valve is controlled to increase operation in a first set cycle until it reaches the current maximum opening.

[0010] In some embodiments, the apparatus comprises:

[0011] an acquisition module configured to acquire a current pressure ratio between a current exhaust pressure and a current suction pressure of the compressor and acquire a current guide vane valve opening of an intake guide vane of the compressor when it is determined that the air-conditioning compressor is in a load-reduced operation;

[0012] a determination module configured to determine a current initial opening and a current maximum opening of the bypass electronic expansion valve according to the current pressure ratio, when it is determined that the compressor is in a noise control mode according to the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load state of the compressor;

[0013] The control module is configured to adjust the bypass electronic expansion valve to a current initial opening, and then control the bypass electronic expansion valve to increase operation in a first set cycle until it reaches a current maximum opening.

[0014] In some embodiments, the device for air conditioning control includes a processor and a memory storing program instructions, and the processor is configured to execute the above-mentioned method for air conditioning control when executing the program instructions.

[0015] In some embodiments, the air conditioner includes an air conditioner body; the above-mentioned device for air conditioner control is installed on the air conditioner body.

[0016] In some embodiments, the storage medium stores program instructions, and when the program instructions are run, the above-mentioned method for air conditioning control is executed.

[0017] The method, device and air conditioner for air conditioning control provided by the embodiments of the present disclosure can achieve the following technical effects:

[0018] During the load-reducing operation of the air-conditioning compressor, when the pressure ratio between the exhaust pressure and the suction pressure of the compressor is relatively large, the bypass electronic expansion valve can be opened and the opening of the bypass electronic expansion valve of the compressor can be increased, so that more high-pressure side gas can be bypassed to the low-pressure side, the pressure on the low-pressure side can be increased, and the pressure ratio of the compressor can be reduced, thereby reducing the noise generated by the friction between the airflow and the IGV. In addition, different pressure ratios correspond to different initial openings and maximum openings of the bypass electronic expansion valve. In this way, the bypass electronic expansion valve can be operated in a corresponding increase according to the initial opening and maximum opening, realizing precise control of the bypass electronic expansion valve.

[0019] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0021] Figure 1 is a flow chart of an air conditioning control method provided by an embodiment of the present disclosure;

[0022] Figure 2 is a flow chart of an air conditioning control method provided by an embodiment of the present disclosure;

[0023] Figure 3 is a flow chart for determining whether a compressor is in a noise control mode provided by an embodiment of the present disclosure;

[0024] Figure 4 is a structural schematic diagram of an air conditioning control device provided by an embodiment of the present disclosure;

[0025] Figure 5 is a structural schematic diagram of an air conditioning control device provided by an embodiment of the present disclosure;

[0026] Figure 6 is a structural schematic diagram of an air conditioning control device provided by an embodiment of the present disclosure;

[0027] Figure 7 It is a schematic diagram of an air conditioner provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0029] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0030] Unless otherwise stated, the term "plurality" means two or more.

[0031] 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 indicates: A or B.

[0032] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0033] In the disclosed embodiment, the air-conditioning compressor includes a bypass electronic expansion valve. The bypass electronic expansion valve is a mechanical device that uses the balance principle of refrigerant pressure and spring force to control the valve inlet / outlet pressure. It can keep the system working normally at a given minimum suction pressure by bypassing high-pressure refrigerant to the low-pressure side of the system. In this way, during the load-reducing operation of the air-conditioning compressor, when the pressure ratio between the exhaust pressure and the suction pressure of the compressor is relatively large, the bypass electronic expansion valve can be opened, and the opening of the bypass electronic expansion valve of the compressor can be increased, so that more high-pressure side gas is bypassed to the low-pressure side, the pressure on the low-pressure side is increased, and the pressure ratio of the compressor is reduced, thereby reducing the noise generated by the friction between the air flow and the IGV, and improving the performance of the air conditioner. In addition, different pressure ratios correspond to different initial openings and maximum openings of the bypass electronic expansion valve, so that the bypass electronic expansion valve can be operated in a corresponding increase according to the initial opening and the maximum opening, thereby realizing precise control of the bypass electronic expansion valve. In addition, the maximum opening of the bypass electronic expansion valve can also be adjusted according to the degree of noise relief, further improving the flexibility and accuracy of the bypass electronic expansion valve control.

[0034] Figure 1 is a flow chart of an air conditioning control method provided by an embodiment of the present disclosure. The air conditioning compressor includes a bypass electronic expansion valve, such as Figure 1 As shown, the process of air conditioning control includes:

[0035] Step 101: When it is determined that the air-conditioning compressor is in a reduced-load operation, a current pressure ratio between a current exhaust pressure and a current intake pressure of the compressor is obtained, and a current guide vane valve opening of an intake guide vane of the compressor is obtained.

[0036] In the disclosed embodiment, the water temperature can be monitored to determine whether the air conditioner compressor is in load reduction operation. When the air conditioner is in cooling mode, if the current water temperature is lower than the target water temperature, the air conditioner compressor is determined to be in load reduction operation; when the air conditioner is in heating mode, if the current water temperature is higher than the target water temperature, the air conditioner compressor is determined to be in load reduction operation.

[0037] When the air-conditioning compressor is running at reduced load, the IGV will be closed. At this time, if the pressure ratio of the air-conditioning compressor is relatively large, the friction between the airflow and the IGV may cause the IGV to vibrate and generate noise, that is, there is a noise hazard. Therefore, it is necessary to obtain the current exhaust pressure and the current suction pressure of the compressor, and the ratio between the current exhaust pressure and the current suction pressure can be obtained, that is, the current pressure ratio of the compressor. At the same time, it is also necessary to obtain the current guide vane valve opening of the compressor intake guide vane.

[0038] Step 102: When it is determined that the compressor is in the noise control mode based on the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load state of the compressor, the current initial opening and the current maximum opening of the bypass electronic expansion valve are determined based on the current pressure ratio.

[0039] During the loaded operation of the air-conditioning compressor, when the current water temperature is lower than the first set temperature and the current load state of the compressor is at the minimum load state, it can be determined whether the compressor needs noise control based on the current pressure ratio and the current guide vane valve opening.

[0040] The first set temperature may be determined according to the target water temperature and the shutdown temperature difference. In some embodiments, the first set temperature = target water temperature - shutdown temperature difference + T, and T corresponds to a range of 0 to 2°C, for example, T = 0.5°C. Different shutdown temperature difference operating modes correspond to different values, which may be positive or negative.

[0041] The load status of the compressor can also be monitored in real time or at regular intervals, so that the current load status corresponding to that moment can be obtained. If the current load status is in the minimum load state and the current water temperature is lower than the first set temperature, it can be determined whether the compressor needs noise control based on the current pressure ratio and the current guide vane valve opening.

[0042] In some embodiments, the current pressure ratio may be compared with the initial pressure ratio; and when the current pressure ratio is greater than the initial pressure ratio, if the current guide vane valve opening is at the minimum set opening, it is determined that the compressor is in the noise control mode.

[0043] The initial pressure ratio range may be 0 to 4, for example, the initial pressure ratio may be 1.63. The current pressure ratio Pr> the initial pressure ratio P0, the IGV has been closed to the minimum, that is, the current guide vane valve opening is at the minimum setting opening, at this time, the critical point of generating noise may be reached, and the compressor needs to perform noise control, which means that the compressor is in the noise control mode.

[0044] In some embodiments, after comparing the current pressure ratio with the initial pressure ratio, when the current pressure ratio is greater than the initial pressure ratio and less than the first pressure ratio, if the current guide vane valve opening is less than the first guide vane opening, it is determined that the compressor is in noise control mode; when the current pressure ratio is greater than or equal to the first pressure ratio and less than the second pressure ratio, if the current guide vane valve opening is less than the second guide vane opening, it is determined that the compressor is in noise control mode; when the current pressure ratio is greater than or equal to the second pressure ratio, if the current guide vane valve opening is less than the third guide vane opening, it is determined that the compressor is in noise control mode; wherein the second guide vane opening is greater than the first guide vane opening and less than the third guide vane opening.

[0045] Among them, the ranges corresponding to the initial pressure P0, the first pressure ratio P1, and the second pressure ratio P2 can be 0 to 4. Of course, P2 > P1 > P0. And the ranges corresponding to the first guide vane opening E1, the second guide vane opening E2, and the third guide vane opening E3 can be 10 to 100%. Of course, E3 > E2 > E1.

[0046] Of course, for different air conditioner units and different compressors, the corresponding P0, P1, and P2 may not be exactly the same. Similarly, the corresponding E1, E2, and E3 may not be exactly the same. For example: when P0 = 1.63, P1 = 2.0, P2 = 2.5; and the corresponding E1 = 30%, E2 = 40%, E3 = 60%.

[0047] Thus, if the current water temperature is less than the first set temperature, and the compressor is in the minimum load state. At this time, if P0 < Pr < P1 and the current guide vane opening < E1, it is determined that the compressor is in the noise control mode; or, if P1 ≤ Pr < P2 and the current guide vane opening < E2, it is determined that the compressor is in the noise control mode; or, if P2 ≤ Pr and the current guide vane opening < E3, it is determined that the compressor is in the noise control mode. Or, when P0 < Pr and the current guide vane opening is at the minimum set opening, it is determined that the compressor is in the noise control mode.

[0048] After determining that the compressor is in the noise control mode, it is necessary to open and increase the bypass electronic expansion valve according to the situation to reduce the pressure ratio of the compressor. Before controlling the bypass electronic expansion valve, it is also necessary to determine the current initial opening and the current maximum opening of the bypass electronic expansion valve. Because only at the matching initial opening can an ideal noise control mode be achieved.

[0049] For example: if P1 ≤ Pr < P2, the corresponding initial opening is 20%. At this time, after controlling the bypass electronic expansion valve according to this initial opening, the pressure ratio reduction speed is low and the effect is not obvious; while if the initial opening is 30%, the pressure ratio reduction speed is fast and the effect is obvious; however, if the initial opening is too large, it will instead cause the pressure ratio to drop too fast, resulting in instability of the unit and easy occurrence of noise.

[0050] Of course, when at the maximum opening that does not match the pressure ratio, the bypass electronic expansion valve may already be at the maximum opening, but the pressure ratio still cannot be reduced, and the generation of noise still cannot be slowed down.

[0051] Therefore, multiple experiments can be carried out according to the structural performance of the compressor and the operating scenarios of the air conditioner to obtain and save the corresponding relationship between the pressure ratio of the compressor and the initial opening and the maximum opening. Thus, according to the saved corresponding relationship, the current initial opening and the current maximum opening corresponding to the current pressure ratio can be determined.

[0052] As shown in Table 1, when the current pressure ratio is less than the first pressure ratio, the first initial opening and the first maximum opening are respectively determined as the current initial opening and the current maximum opening of the bypass electronic expansion valve; when the current pressure ratio is greater than or equal to the first pressure ratio and less than the second pressure ratio, the second initial opening and the second maximum opening are respectively determined as the current initial opening and the current maximum opening of the bypass electronic expansion valve; when the current pressure ratio is greater than or equal to the second pressure ratio, the third initial opening and the third maximum opening are respectively determined as the current initial opening and the current maximum opening of the bypass electronic expansion valve; wherein, the second initial opening is greater than the first initial opening and less than the third initial opening, that is, Ks1 < Ks2 < Ks3, and the second maximum opening is less than the first maximum opening and less than the third maximum opening, that is, Kz1 < Kz2 < Kz3.

[0053]

[0054] Table 1

[0055] In some embodiments, the ranges corresponding to Ks1, Ks2, and Ks3 are 0 to 100%, and the ranges corresponding to Kz1, Kz2, and Kz3 are also 0 to 100%. For example: when Ks1 = 20%, Ks2 can be 30%, and Ks3 can be 50%, and the corresponding Kz1, Kz2, and Kz3 can be 45%, 55%, and 85% respectively.

[0056] Step 103: After adjusting the bypass electronic expansion valve to the current initial opening, control the bypass electronic expansion valve to increase its operation at a first set period until it reaches the current maximum opening.

[0057] When performing noise mode control on the compressor, it is necessary to increase the opening of the bypass electronic expansion valve. Generally, the bypass electronic expansion valve can be periodically controlled to increase its operation, that is, every time it reaches a moment matching the first set period, the valve opening of the bypass electronic expansion valve can be increased according to the set opening value or the set ratio.

[0058] In the disclosed embodiment, the bypass electronic expansion valve can be periodically controlled to increase operation based on the current initial opening and the current maximum opening. That is, the bypass electronic expansion valve is periodically increased based on the current initial opening, but the maximum cannot exceed the current maximum opening. That is, after the bypass electronic expansion valve is adjusted to the current initial opening, the bypass electronic expansion valve is controlled to increase operation until the current maximum opening is reached with a first set period. In some embodiments, it may include: when the current moment reaches a moment matching the first set period, the current bypass valve opening of the bypass electronic expansion valve is obtained, wherein when the current moment is the starting moment, the current bypass valve opening is the current starting opening; the sum between the current bypass valve opening and the set opening is determined as the increased valve opening, the smaller value between the increased valve opening and the current maximum valve opening is determined, the updated current bypass valve opening is determined, and the bypass electronic expansion valve is controlled to operate according to the updated current bypass valve opening.

[0059] The range corresponding to the first set period T1 can be 0 to 60s, for example: T1 = 5s or 10s. The set opening Kg can correspond to a range of 0 to 50%, for example: Kg = 3%, 5%, 8%, 10%, etc. In this way, after the bypass electronic expansion valve is adjusted to the current initial opening, it may be Ks1, Ks2, or Ks3. Every time the moment matching the first set period is reached, the current bypass valve opening Kd is obtained. Then (Kd+Kg) is compared with the current maximum opening, that is, (Kd+Kg) is compared with Kz1, Kz2, or Kz3, and the smaller value is determined as the updated current bypass valve opening, and the bypass electronic expansion valve is controlled to operate according to the updated current bypass valve opening until the bypass electronic expansion valve reaches Kz1, Kz2, or Kz3.

[0060] It can be seen that in the embodiment of the present disclosure, during the load-reducing operation of the air-conditioning compressor, when the pressure ratio between the exhaust pressure and the suction pressure of the compressor is relatively large, the bypass electronic expansion valve can be opened, and the opening of the bypass electronic expansion valve of the compressor can be increased, so that more high-pressure side gas can be bypassed to the low-pressure side, the pressure on the low-pressure side can be increased, and the pressure ratio of the compressor can be reduced, thereby reducing the noise generated by the friction between the airflow and the IGV, and improving the performance of the air conditioner. In addition, different pressure ratios correspond to different initial openings and maximum openings of the bypass electronic expansion valve. In this way, the bypass electronic expansion valve can be operated in a corresponding increase according to the initial opening and the maximum opening, thereby realizing precise control of the bypass electronic expansion valve. In addition, the maximum opening of the bypass electronic expansion valve can also be adjusted according to the degree of noise relief, further improving the flexibility and accuracy of the bypass electronic expansion valve control.

[0061] Of course, when the compressor is determined not to be in the noise control mode according to the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load state of the compressor, the bypass electronic expansion valve can still be periodically controlled to increase the operation. However, at this time, the initial opening of the bypass electronic expansion valve maintains the valve opening corresponding to the current bypass electronic expansion valve.

[0062] In the disclosed embodiment, multiple experiments are conducted based on the structural performance of the compressor and the operating scenario of the air conditioner to obtain the corresponding relationship between the pressure ratio of the compressor and the initial opening and the maximum opening. For example, in some embodiments, after the bypass electronic expansion valve is controlled to increase operation, the bypass electronic expansion valve is opened to the corresponding current maximum opening and still cannot reduce the noise generation, then the maximum opening in the saved corresponding relationship can be adjusted, that is, after the bypass electronic expansion valve is controlled to increase operation until the current maximum opening is reached, when it is determined that the compressor is in the noise control mode, the current maximum opening that matches the current pressure ratio is increased.

[0063] In this way, the maximum opening degree matching the pressure ratio can be flexibly adjusted, which further ensures that the noise generation can be reduced by controlling the bypass electronic expansion valve, and improves the flexibility and accuracy of the bypass electronic expansion valve control.

[0064] The operation flow is collected into a specific embodiment below to illustrate the air conditioning control process provided by the embodiment of the present invention.

[0065] In one embodiment of the present disclosure, the initial pressure P0=1.63, P1=2, P2=2.5, E1=30%, E2=40%, E1=60 stored in the air conditioner, and the corresponding relationship between the stored compressor pressure ratio and the initial opening and the maximum opening is shown in Table 2. In addition, the first setting period T1=10s, and the setting opening is 5%.

[0066]

[0067] Table 2

[0068] Figure 2 FIG. 1 is a flow chart of an air conditioning control method provided by an embodiment of the present disclosure. Figure 2 As shown, the air conditioning control process includes:

[0069] Step 201: The air conditioner obtains the current water temperature.

[0070] Step 202: Determine whether the current water temperature meets the load shedding water temperature condition matching the current working mode. If yes, execute step 203; otherwise, return to step 201.

[0071] If the current working mode is the cooling mode, if the current water temperature is lower than the target water temperature, it is determined that the current water temperature meets the load shedding water temperature condition matching the cooling mode, and step 203 can be executed. If the current working mode is the heating mode, if the current water temperature is higher than the target water temperature, it is determined that the current water temperature meets the load shedding water temperature condition matching the heating mode, and step 203 can be executed.

[0072] Step 203: The air conditioner obtains the current exhaust pressure and the current intake pressure of the compressor, obtains the current pressure ratio Pr of the current exhaust pressure and the current intake pressure value, and obtains the current guide vane valve opening Ed of the compressor intake guide vane.

[0073] Step 204: The air conditioner determines whether the compressor is in the noise control mode according to the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load state of the compressor. If yes, execute step 205; otherwise, execute step 211.

[0074] Step 205: The air conditioner determines the current initial opening and the current maximum opening of the bypass electronic expansion valve corresponding to the current pressure ratio according to Table 2, and adjusts the current bypass valve opening of the bypass electronic expansion valve to the current initial opening.

[0075] As shown in Table 2, the current initial opening may be 20%, 30% or 50%, and the corresponding current maximum opening may be 45%, 55% or 85%.

[0076] Step 206: Does the current time reach a time matching the first set period? If so, execute step 207; otherwise, execute step 206.

[0077] Step 207: The air conditioner obtains the current bypass valve opening Kd.

[0078] For initial control, Kd may be 20%, 30% or 50%.

[0079] Step 208: Determine whether (Kd+5%) is less than the current maximum opening. If so, execute step 209; otherwise, execute step 210.

[0080] Step 209: The air conditioner opens the bypass electronic expansion valve to (Kd+5%) and operates. Return to step 206.

[0081] Step 210: The air conditioner opens the bypass electronic expansion valve to the current maximum opening and operates.

[0082] Step 211: The air conditioner controls the bypass electronic expansion valve to increase the pressure according to the first set cycle, increasing by 5% each time.

[0083] The air conditioner makes periodic adjustments starting from the existing opening degree of the bypass electronic expansion valve and ending at the maximum valve opening degree of the bypass electronic expansion valve. Among them, the existing opening degree may be 0, 5%, 10%, or 25%, and the maximum valve opening degree is determined by the equipment performance of the bypass electronic expansion valve and does not need to be determined by the pressure ratio.

[0084] In step 204 above, the air conditioner can determine whether the compressor is in the noise control mode according to the current pressure ratio, the current guide vane valve opening degree, the current water temperature, and the current load state of the compressor. As Figure 3 shown, the process of determining that the compressor is in the noise control mode is as follows:

[0085] Step 301: Determine whether the current water temperature is less than the first set temperature? If so, execute step 302; otherwise, execute step 311.

[0086] The first set temperature = target water temperature - shutdown temperature difference + 0.5°C.

[0087] Step 302: Determine whether the current load state of the air conditioner compressor is the minimum load state? If so, execute step 303; otherwise, execute step 311.

[0088] Step 303: Determine whether Pr > P0 holds? If so, execute step 304; otherwise, execute step 305.

[0089] Step 304: Determine whether Ed is the minimum set opening degree? If so, execute step 310; otherwise, execute step 305.

[0090] Step 305: Determine whether Pr < P1 holds? If so, execute step 306; otherwise, execute step 307.

[0091] Step 306: Determine whether Ed < E1 holds? If so, execute step 310; otherwise, execute step 311.

[0092] Step 307: Determine whether P1 ≤ Pr < P2 holds? If so, execute step 308; otherwise, execute step 309.

[0093] Step 308: Determine whether Ed < E2 holds? If so, execute step 310; otherwise, execute step 311.

[0094] Step 309: Determine whether Ed < E3 holds? If so, execute step 310; otherwise, execute step 311.

[0095] At this time, P2 ≤ Pr.

[0096] Step 310: The air conditioner determines that the compressor is in the noise control mode.

[0097] Step 311: The air conditioner determines that the compressor is not in the noise control mode.

[0098] It can be seen that in this embodiment, during the load-reducing operation of the air-conditioning compressor, when the pressure ratio between the exhaust pressure and the suction pressure of the compressor is relatively large, the bypass electronic expansion valve can be opened and the opening of the bypass electronic expansion valve of the compressor can be increased, so that more high-pressure side gas can be bypassed to the low-pressure side, the pressure on the low-pressure side can be increased, and the pressure ratio of the compressor can be reduced, thereby reducing the noise generated by the friction between the airflow and the IGV and improving the performance of the air conditioner. In addition, different pressure ratios correspond to different initial openings and maximum openings of the bypass electronic expansion valve. In this way, the bypass electronic expansion valve can perform corresponding increasing operation according to the initial opening and the maximum opening, thereby realizing precise control of the bypass electronic expansion valve.

[0099] According to the above process for air conditioning control, a device for air conditioning control can be constructed.

[0100] Figure 4 Schematic diagram of a structure of an air conditioning control device provided by an embodiment of the present disclosure. Figure 4 As shown, the air conditioning control device 400 includes: an acquisition module 410 , a determination module 420 and a control module 430 .

[0101] The acquisition module 410 is configured to acquire a current pressure ratio between a current exhaust pressure and a current intake pressure of the compressor and acquire a current guide vane valve opening of the compressor intake guide vane when it is determined that the air conditioning compressor is in a reduced-load operation.

[0102] The determination module 420 is configured to determine the current initial opening and the current maximum opening of the bypass electronic expansion valve according to the current pressure ratio, when it is determined that the compressor is in the noise control mode according to the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load state of the compressor;

[0103] The control module 430 is configured to adjust the bypass electronic expansion valve to a current initial opening, and then control the bypass electronic expansion valve to increase operation at a first set period until the bypass electronic expansion valve reaches a current maximum opening.

[0104] In some embodiments, it also includes: a load reduction determination module, which is configured to determine that the air-conditioning compressor is in load reduction operation when the air-conditioning is operating in cooling mode and the current water temperature is lower than the target water temperature; and to determine that the air-conditioning compressor is in load reduction operation when the air-conditioning is operating in heating mode and the current water temperature is higher than the target water temperature.

[0105] In some embodiments, the determination module 420 includes:

[0106] The noise determination unit is configured to compare the current pressure ratio with the initial pressure ratio when the current water temperature is lower than the first set temperature and the current load state of the compressor is in the minimum load state; and to determine that the compressor is in the noise control mode when the current pressure ratio is greater than the initial pressure ratio and the current guide vane valve opening is in the minimum set opening.

[0107] In some embodiments, the noise determination unit is further configured to, when the current pressure ratio is greater than the initial pressure ratio and less than the first pressure ratio, if the current guide vane valve opening is less than the first guide vane opening, determine that the compressor is in the noise control mode; when the current pressure ratio is greater than or equal to the first pressure ratio and less than the second pressure ratio, if the current guide vane valve opening is less than the second guide vane opening, determine that the compressor is in the noise control mode; when the current pressure ratio is greater than or equal to the second pressure ratio, if the current guide vane valve opening is less than the third guide vane opening, determine that the compressor is in the noise control mode; wherein the second guide vane opening is greater than the first guide vane opening and less than the third guide vane opening.

[0108] In some embodiments, the determination module 420 includes:

[0109] The opening determination unit is configured to, when the current pressure ratio is less than the first pressure ratio, determine the first initial opening and the first maximum opening as the current initial opening and the current maximum opening of the bypass electronic expansion valve respectively; when the current pressure ratio is greater than or equal to the first pressure ratio and less than the second pressure ratio, determine the second initial opening and the second maximum opening as the current initial opening and the current maximum opening of the bypass electronic expansion valve respectively; when the current pressure ratio is greater than or equal to the second pressure ratio, determine the third initial opening and the third maximum opening as the current initial opening and the current maximum opening of the bypass electronic expansion valve respectively; wherein the second initial opening is greater than the first initial opening and less than the third initial opening, and the second maximum opening is less than the first maximum opening and less than the third maximum opening.

[0110] In some embodiments, the control module 430 is specifically configured to obtain the current bypass valve opening of the bypass electronic expansion valve when the current moment reaches a moment matching the first set period, wherein when the current moment is the starting moment, the current bypass valve opening is the current starting opening; determine the sum of the current bypass valve opening and the set opening as the increased valve opening, determine the smaller value between the increased valve opening and the current maximum valve opening, and control the operation of the bypass electronic expansion valve based on the updated current bypass valve opening.

[0111] In some embodiments, the method further includes: an adjustment module configured to control the bypass electronic expansion valve to increase its operation until it reaches a current maximum opening, and when it is determined that the compressor is in a noise control mode, increase the current maximum opening to match the current pressure ratio.

[0112] The air - conditioner control process for the air - conditioner control device will be further described below in conjunction with embodiments.

[0113] In this embodiment, the initial pressures P0 = 1.63, P1 = 2, P2 = 2.5, E1 = 30%, E2 = 40%, E3 = 60% stored in the air - conditioner, and the corresponding relationship between the pressure ratio of the compressor and the initial opening and the maximum opening is shown in Table 2. And, the first set period T1 = 10s, and the set opening is 5%.

[0114] Figure 5 It is a schematic structural diagram of an air - conditioner control device provided by an embodiment of the present disclosure. As Figure 5 shown, the air - conditioner control device 400 includes: an acquisition module 410, a determination module 420, a control module 430, a load - reduction determination module 440, and an adjustment module 450. Among them, the determination module 420 includes: a noise determination unit 421 and an opening determination unit 422.

[0115] In this embodiment, the air - conditioner detects the water temperature. If the current working mode is the cooling mode and the current water temperature is less than the target water temperature, the load - reduction determination module 440 can determine that the current water temperature meets the load - reduction water - temperature condition matching the cooling mode, that is, it is determined that the air - conditioner compressor is in the load - reduction operation. If the current working mode is the heating mode and the current water temperature is greater than the target water temperature, the load - reduction determination module 440 can determine that the current water temperature meets the load - reduction water - temperature condition matching the heating mode, that is, it is determined that the air - conditioner compressor is in the load - reduction operation.

[0116] In this way, the acquisition module 410 can acquire the current discharge pressure and the current suction pressure of the compressor, obtain the current pressure ratio Pr of the current discharge pressure and the current suction pressure value, and acquire the current guide - vane opening Ed of the compressor inlet guide vane.

[0117] And, when the current water temperature is less than the first set temperature and the current load state of the compressor is in the minimum - load state, if Pr > P0 and the current guide - vane opening is in the minimum set opening, the noise determination unit 421 in the determination module 420 can determine that the compressor is in the noise - control mode. Of course, when the current water temperature is less than the first set temperature and the current load state of the compressor is in the minimum - load state, if P0 < Pr < P1 and Ed < E1, the noise determination unit 421 can determine that the compressor is in the noise - control mode; if P1 ≤ Pr < P2 and Ed < E2, the noise determination unit 421 can determine that the compressor is in the noise - control mode; if P2 ≤ Pr and Ed < E3, the noise determination unit 421 can determine that the compressor is in the noise - control mode. Thus, the opening determination unit 422 in the determination module 420 can determine the current initial opening and the current maximum opening of the bypass electronic expansion valve corresponding to the current pressure ratio according to Table 2.

[0118] Thus, after adjusting the current bypass valve opening of the bypass electronic expansion valve to the current initial opening, if the current moment reaches the moment matching the first set period, the control module 430 obtains the current bypass valve opening Kd of the bypass electronic expansion valve, and when (Kd+5%) is less than the current maximum opening, the bypass electronic expansion valve is opened to (Kd+5%) and operated, until the bypass electronic expansion valve is opened to the current maximum opening and operated. When (Kd+5%) is greater than or equal to the current maximum opening, the bypass electronic expansion valve is opened to the current maximum opening and operated.

[0119] After the bypass electronic expansion valve is opened to the current maximum opening and operated, the adjustment module 450 may increase the current maximum opening in Table 2 that matches the current pressure ratio when the compressor is in noise control mode based on the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load state of the compressor.

[0120] Of course, when the determination module 420 determines that the compressor is not in the noise control mode according to the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load state of the compressor, the control module 430 can control the bypass electronic expansion valve to increase and adjust according to the first set period, increasing by 5% each time. Among them, the current opening of the bypass electronic expansion valve can be used as the starting point and the maximum valve opening of the bypass electronic expansion valve can be used as the end point for periodic adjustment. Among them, the current opening may be 0, 5%, 10%, or 25%, and the maximum valve opening is determined by the equipment performance of the bypass electronic expansion valve, and does not need to be determined by the pressure ratio.

[0121] It can be seen that in this embodiment, during the load-reducing operation of the air-conditioning compressor, when the pressure ratio between the exhaust pressure and the suction pressure of the compressor is relatively large, the device for air-conditioning control can open the bypass electronic expansion valve and increase the opening of the bypass electronic expansion valve of the compressor, so that more high-pressure side gas bypasses to the low-pressure side, increases the pressure on the low-pressure side, and reduces the pressure ratio of the compressor, thereby reducing the noise generated by the friction between the airflow and the IGV, and improving the performance of the air conditioner. In addition, different pressure ratios correspond to different initial openings and maximum openings of the bypass electronic expansion valve. In this way, the bypass electronic expansion valve can perform corresponding increase operation according to the initial opening and the maximum opening, thereby realizing precise control of the bypass electronic expansion valve. In addition, the maximum opening of the bypass electronic expansion valve can also be adjusted according to the degree of noise relief, further improving the flexibility and accuracy of the bypass electronic expansion valve control.

[0122] Combination Figure 6 , the embodiment of the present disclosure provides a device 600 for air conditioning control, comprising:

[0123] The processor 1000 and the memory 1001 may also include a communication interface 1002 and a bus 1003. The processor 1000, the communication interface 1002, and the memory 1001 may communicate with each other through the bus 1003. The communication interface 1002 may be used for information transmission. The processor 1000 may call the logic instructions in the memory 1001 to execute the method for air conditioning control of the above embodiment.

[0124] In addition, the logic instructions in the above-mentioned memory 1001 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0125] The memory 1001 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 1000 executes the function application and data processing by running the program instructions / modules stored in the memory 1001, that is, the method for air conditioning control in the above method embodiment is implemented.

[0126] The memory 1001 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 1001 may include a high-speed random access memory and may also include a non-volatile memory.

[0127] An embodiment of the present disclosure provides an air conditioning control device, comprising: a processor and a memory storing program instructions, wherein the processor is configured to execute an air conditioning control method when executing the program instructions.

[0128] Combination Figure 7 , the embodiment of the present disclosure provides an air conditioner 700, including: an air conditioner body, and the above-mentioned air conditioner control device 400 (600). The air conditioner control device 400 (600) is installed on the air conditioner body. The installation relationship described here is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections or signal transmission connections. It can be understood by those skilled in the art that the air conditioner control device 400 (600) can be adapted to a feasible air conditioner body, thereby realizing other feasible embodiments.

[0129] An embodiment of the present disclosure provides a storage medium storing program instructions, which, when run, execute the above-mentioned method for air conditioning control.

[0130] An embodiment of the present disclosure provides a computer program product, which includes a computer program stored on a storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the above-mentioned air conditioning control method.

[0131] The above-mentioned storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0132] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes, or a transient storage medium.

[0133] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, individual components and functions are optional, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The scope of the embodiments of the present disclosure includes the entire scope of the claims, and all available equivalents of the claims. When used in this application, although the terms "first", "second", etc. may be used in this application to describe each element, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without changing the meaning of the description, the first element can be called the second element, and similarly, the second element can be called the first element, as long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first element and the second element are both elements, but may not be the same element. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates, the singular forms "a", "an" and "the" are intended to include the plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups of these. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method or device including the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0134] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0135] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. 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 units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0136] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for air conditioning control, characterized in that: The air-conditioning compressor includes a bypass electronic expansion valve, including: When it is determined that the air conditioning compressor is in a reduced-load operation, a current pressure ratio between a current exhaust pressure and a current suction pressure of the compressor is obtained, and a current guide vane valve opening of an intake guide vane of the compressor is obtained; When it is determined that the compressor is in the noise control mode according to the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load state of the compressor, the current initial opening and the current maximum opening of the bypass electronic expansion valve are determined according to the current pressure ratio; After the bypass electronic expansion valve is adjusted to the current initial opening, the bypass electronic expansion valve is controlled to increase operation in a first set cycle until it reaches the current maximum opening.

2. The method according to claim 1, characterized in that Determining that the air conditioner compressor is in load reduction operation includes: When the air conditioner is in cooling mode, if the current water temperature is lower than the target water temperature, it is determined that the air conditioner compressor is in load reduction operation; When the air conditioner is operating in the heating mode and the current water temperature is greater than the target water temperature, it is determined that the air conditioner compressor is operating in a reduced load mode.

3. The method according to claim 1, characterized in that Determining that the compressor is in the noise control mode includes: When the current water temperature is lower than the first set temperature, if the current load state of the compressor is at the minimum load state, the current pressure ratio is compared with the initial pressure ratio; When the current pressure ratio is greater than the initial pressure ratio and the current guide vane valve opening is at the minimum set opening, it is determined that the compressor is in the noise control mode.

4. The method according to claim 3, characterized in that Determining that the compressor is in the noise control mode further includes: When the current pressure ratio is greater than the initial pressure ratio and less than the first pressure ratio, if the current guide vane valve opening is less than the first guide vane opening, determining that the compressor is in the noise control mode; When the current pressure ratio is greater than or equal to the first pressure ratio and less than the second pressure ratio, if the current guide vane valve opening is less than the second guide vane opening, determining that the compressor is in the noise control mode; When the current pressure ratio is greater than or equal to the second pressure ratio, if the current guide vane valve opening is less than the third guide vane opening, it is determined that the compressor is in the noise control mode; The second guide vane opening is greater than the first guide vane opening and less than the third guide vane opening.

5. The method according to claim 1, characterized in that Determining the current initial opening and the current maximum opening of the bypass electronic expansion valve according to the current pressure ratio includes: When the current pressure ratio is less than the first pressure ratio, the first initial opening and the first maximum opening are respectively determined as the current initial opening and the current maximum opening of the bypass electronic expansion valve; When the current pressure ratio is greater than or equal to the first pressure ratio and less than the second pressure ratio, the second initial opening and the second maximum opening are respectively determined as the current initial opening and the current maximum opening of the bypass electronic expansion valve; When the current pressure ratio is greater than or equal to the second pressure ratio, the third initial opening and the third maximum opening are respectively determined as the current initial opening and the current maximum opening of the bypass electronic expansion valve; The second initial opening is greater than the first initial opening and less than the third initial opening, and the second maximum opening is less than the first maximum opening and less than the third maximum opening.

6. The method according to any one of claims 1 to 5, characterized in that: The controlling the bypass electronic expansion valve to increase the operation until the current maximum opening degree is reached comprises: When the current moment reaches a moment matching the first set period, obtaining the current bypass valve opening of the bypass electronic expansion valve, wherein when the current moment is the starting moment, the current bypass valve opening is the current starting opening; The sum of the current bypass valve opening and the set opening is determined as the increased valve opening, the smaller value between the increased valve opening and the current maximum valve opening is used to determine the updated current bypass valve opening, and the bypass electronic expansion valve is controlled according to the updated current bypass valve opening.

7. The method according to claim 6, characterized in that After the bypass electronic expansion valve is controlled to increase its operation until the current maximum opening is reached, the method further includes: When it is determined that the compressor is in the noise control mode, the current maximum opening degree matching the current pressure ratio is increased.

8. A device for air conditioning control, characterized in that: include: an acquisition module, configured to acquire a current pressure ratio between a current exhaust pressure and a current suction pressure of the compressor and acquire a current guide vane valve opening of an intake guide vane of the compressor when it is determined that the air-conditioning compressor is in a load-reduced operation; a determination module configured to determine a current initial opening and a current maximum opening of the bypass electronic expansion valve according to the current pressure ratio, when it is determined that the compressor is in a noise control mode according to the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load state of the compressor; The control module is configured to adjust the bypass electronic expansion valve to a current initial opening, and then control the bypass electronic expansion valve to increase operation in a first set cycle until it reaches a current maximum opening.

9. A device for air conditioning control, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to perform the method for air conditioning control as claimed in any one of claims 1 to 7 when executing the program instructions.

10. An air conditioner, characterized in that: include: Air conditioner body; The device for air conditioning control as described in claim 7 or 8 is installed on the air conditioning body.

11. A storage medium storing program instructions, characterized in that: When the program instructions are executed, the method for air conditioning control as described in any one of claims 1 to 7 is executed.

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