Method and apparatus for air conditioner control, air conditioner and storage medium

Abstract

This application relates to the field of intelligent air conditioning technology, disclosing a method, device, air conditioner, and storage medium for air conditioning control. The air conditioning compressor includes a bypass electronic expansion valve. The method includes: when it is determined that the air conditioning compressor is in unloaded operation, obtaining the current pressure ratio between the current discharge pressure and the current suction pressure of the compressor, and obtaining the current guide vane valve opening of the compressor intake guide vane; when it is determined that 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, determining the current initial opening and the current maximum opening of the bypass electronic expansion valve based on the current pressure ratio; after adjusting the bypass electronic expansion valve to the current initial opening, controlling the bypass electronic expansion valve to increase its operation until it reaches the current maximum opening in a first set cycle. This reduces the noise caused by the intake guide vane during air conditioning unloaded operation.

Description

Technical Field

[0001] This application relates to the field of intelligent air conditioning technology, such as methods, devices, air conditioners, and storage media for air conditioning control. Background Technology

[0002] Air conditioners are now essential appliances in homes and offices, especially during the summer and winter months when they are used for extended periods. In some large air conditioning units, during compressor unloading, the inlet guide vane (IGV) inside the compressor closes slightly, meaning the guide vane valve opening decreases. If the pressure ratio between the compressor's discharge and intake pressures is relatively high, this can cause the IGV to vibrate, resulting in significant noise from the entire unit and ultimately affecting the air conditioner's performance.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0005] This disclosure provides a method, apparatus, air conditioner, and storage medium for air conditioning control, addressing the technical problem of high noise levels during air conditioner unloading operation. The air conditioning compressor includes a bypass electronic expansion valve.

[0006] In some embodiments, the method includes:

[0007] When it is determined that the air conditioning compressor is operating under reduced load, the current pressure ratio between the current discharge pressure and the current suction pressure of the compressor is obtained, and the current guide vane valve opening of the compressor intake guide vane is obtained.

[0008] If the compressor is determined to be in noise control mode based on the current pressure ratio, current guide vane valve opening, current water temperature, and current compressor load status, then the current initial opening and current maximum opening of the bypass electronic expansion valve are determined based on the current pressure ratio.

[0009] After adjusting the bypass electronic expansion valve to the current initial opening, control the bypass electronic expansion valve to increase its operation until it reaches the current maximum opening in the first set cycle.

[0010] In some embodiments, the device includes:

[0011] The acquisition module is configured to acquire the current pressure ratio between the current discharge pressure and the current suction pressure of the compressor, and to acquire the current guide vane valve opening of the compressor intake guide vane, when it is determined that the air conditioning compressor is operating under reduced load.

[0012] The determination module is configured to determine the current initial opening and current maximum opening of the bypass electronic expansion valve based on the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load status of the compressor when the compressor is determined to be in noise control mode.

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

[0014] In some embodiments, the apparatus for air conditioning control includes a processor and a memory storing program instructions, the processor being configured to execute the above-described method for air conditioning control when the program instructions are executed.

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

[0016] In some embodiments, the storage medium stores program instructions that, when executed, perform the above-described method for air conditioning control.

[0017] The method, apparatus, and air conditioner for air conditioning control provided in this disclosure can achieve the following technical effects:

[0018] During the unloaded operation of the air conditioning compressor, when the pressure ratio between the compressor's discharge pressure and suction pressure is relatively large, the bypass electronic expansion valve can be opened, and its opening degree can be increased. This allows more high-pressure side gas to bypass to the low-pressure side, increasing the pressure on the low-pressure side and reducing the compressor's pressure ratio. This, in turn, reduces noise generated by friction between the airflow and the IGV (Inlet Gas Ventilation Valve). Furthermore, different pressure ratios correspond to different initial and maximum opening degrees of the bypass electronic expansion valve. Thus, the bypass electronic expansion valve can be adjusted according to these initial and maximum opening degrees, achieving precise control of the bypass electronic expansion valve.

[0019] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0020] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0021] Figure 1 This is a schematic flowchart of an air conditioning control method provided in an embodiment of this disclosure;

[0022] Figure 2 This is a schematic flowchart of an air conditioning control method provided in an embodiment of this disclosure;

[0023] Figure 3 This is a schematic flowchart of an embodiment of the present disclosure for determining that a compressor is in a noise control mode;

[0024] Figure 4 This is a schematic diagram of a structure for an air conditioning control device provided in an embodiment of this disclosure;

[0025] Figure 5 This is a schematic diagram of a structure for an air conditioning control device provided in an embodiment of this disclosure;

[0026] Figure 6 This is a schematic diagram of a structure for an air conditioning control device provided in an embodiment of this disclosure;

[0027] Figure 7 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure. Detailed Implementation

[0028] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0029] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

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

[0031] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0032] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0033] In this embodiment, the air conditioning compressor includes a bypass electronic expansion valve. The bypass electronic expansion valve is a mechanical device that controls the valve inlet / outlet pressure using the balance principle of refrigerant pressure and spring force. It can maintain the system's normal operation at a given minimum suction pressure by bypassing high-pressure refrigerant to the low-pressure side of the system. Thus, during the air conditioning compressor's unloaded operation, when the pressure ratio between the compressor's discharge pressure and suction pressure is large, the bypass electronic expansion valve can be opened, increasing its opening degree. This allows more high-pressure side gas to bypass to the low-pressure side, increasing the low-pressure side pressure and reducing the compressor's pressure ratio. This reduces noise generated by friction between the airflow and the IGV (Inlet Gas Ventilation Valve), improving air conditioning performance. Furthermore, different pressure ratios correspond to different initial and maximum opening degrees of the bypass electronic expansion valve. Therefore, the bypass electronic expansion valve can be adjusted according to the initial and maximum opening degrees, achieving precise control. Moreover, the maximum opening degree of the bypass electronic expansion valve can also be adjusted according to the degree of noise reduction, further improving the flexibility and accuracy of the bypass electronic expansion valve control.

[0034] Figure 1 This is a schematic flowchart of an air conditioning control method provided in an embodiment of this disclosure. The air conditioning compressor includes a bypass electronic expansion valve, such as... Figure 1 As shown, the air conditioning control process includes:

[0035] Step 101: When it is determined that the air conditioning compressor is operating under reduced load, obtain the current pressure ratio between the current discharge pressure and the current suction pressure of the compressor, and obtain the current guide vane valve opening of the compressor intake guide vane.

[0036] In this embodiment of the disclosure, the air conditioning compressor's load reduction operation can be determined by monitoring the water temperature. Specifically, when the air conditioner is operating in cooling mode, if the current water temperature is lower than the target water temperature, the air conditioning compressor is determined to be operating in load reduction mode; when the air conditioner is operating in heating mode, if the current water temperature is higher than the target water temperature, the air conditioning compressor is determined to be operating in load reduction mode.

[0037] During the unloaded operation of the air conditioning compressor, the IGV (Inlet Gas Valve) will close slightly. If the compressor's pressure ratio is relatively high at this time, friction between the airflow and the IGV may cause vibration and noise, posing a noise hazard. Therefore, it is necessary to obtain the compressor's current discharge pressure and current intake pressure, and to calculate the ratio between these pressures, i.e., the compressor's current pressure ratio. Simultaneously, the current guide vane valve opening of the compressor's intake guide vanes also needs to be obtained.

[0038] Step 102: If the compressor is determined to be in noise control mode based on the current pressure ratio, current guide vane valve opening, current water temperature, and current compressor load status, determine the current initial opening and current maximum opening of the bypass electronic expansion valve based on the current pressure ratio.

[0039] When the air conditioner compressor is running under load, if the current water temperature is lower than the first set temperature and the compressor is currently under minimum load, noise control can be determined based on the current pressure ratio and the current guide vane valve opening.

[0040] The first set temperature can be determined based on the target water temperature and the shutdown temperature difference. In some embodiments, the first set temperature = target water temperature - shutdown temperature difference + T, where T ranges from 0 to 2℃, for example, T = 0.5℃. Different operating modes correspond to different values ​​for the shutdown temperature difference, which may be positive or negative.

[0041] The compressor's load status can also be monitored in real time or at set intervals. This allows us to obtain the current load status at any given moment. If the current load status is at the minimum load level and the current water temperature is lower than the first set temperature, we can determine 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 can be compared with the initial pressure ratio; and if the current pressure ratio is greater than the initial pressure ratio, and if the current guide vane valve opening is at the minimum set opening, the compressor is determined to be in noise control mode.

[0043] The initial pressure ratio can range from 0 to 4, for example, the initial pressure ratio can be 1.63. When the current pressure ratio Pr > the initial pressure ratio P0, the IGV is closed to the minimum, that is, the current guide vane valve opening is at the minimum set opening. At this time, the critical point for noise generation may be reached, and the compressor needs to perform noise control. This indicates that the compressor is in noise control mode.

[0044] In some embodiments, after comparing the current pressure ratio with the initial pressure ratio, if the current pressure ratio is greater than the initial pressure ratio and less than the first pressure ratio, and the current guide vane valve opening is less than the first guide vane opening, the compressor is determined to be in noise control mode; if the current pressure ratio is greater than or equal to the first pressure ratio and less than the second pressure ratio, and the current guide vane valve opening is less than the second guide vane opening, the compressor is determined to be in noise control mode; if the current pressure ratio is greater than or equal to the second pressure ratio, and the current guide vane valve opening is less than the third guide vane opening, the compressor is determined to be 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-conditioning units and different compressors, the corresponding P0, P1, and P2 may not be exactly the same. Similarly, the corresponding E1, E2, and E3 may also 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. And 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 also prone to noise.

[0050] Of course, when at the maximum opening that does not match the pressure ratio, it is possible that the bypass electronic expansion valve is already 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; where 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 the 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 controlled to increase its operation periodically, 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 this embodiment, the bypass electronic expansion valve can be periodically controlled to increase its operation based on the current initial opening and the current maximum opening. That is, the bypass electronic expansion valve increases periodically based on the current initial opening, but the maximum increase cannot exceed the current maximum opening. Specifically, after adjusting the bypass electronic expansion valve to the current initial opening, it is controlled to increase its operation until the current maximum opening is reached within a first set period. In some embodiments, this may include: when the current time reaches a moment matching the first set period, obtaining the current bypass valve opening, where the current time is the starting time and the current bypass valve opening is the current initial opening; determining the sum between the current bypass valve opening and the set opening as the increased valve opening; determining the smaller value between the increased valve opening and the current maximum valve opening as the updated current bypass valve opening; and controlling the operation of the bypass electronic expansion valve based on the updated current bypass valve opening.

[0059] The first set period T1 can range from 0 to 60 seconds, for example, T1 = 5 seconds or 10 seconds. The set opening Kg can range from 0 to 50%, for example, Kg = 3%, 5%, 8%, 10%, etc. Thus, after adjusting the bypass electronic expansion valve to the current initial opening, it may be Ks1, Ks2, or Ks3. Each time the time 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. 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] As can be seen, in this embodiment, during the unloaded operation of the air conditioning compressor, when the pressure ratio between the compressor's discharge pressure and suction pressure is relatively large, the bypass electronic expansion valve can be opened, and the opening degree of the compressor's bypass electronic expansion valve can be increased. This allows more high-pressure side gas to bypass to the low-pressure side, increasing the pressure on the low-pressure side and reducing the compressor's pressure ratio. This reduces noise generated by friction between the airflow and the IGV (Inlet Gas Ventilation Valve), thus improving the air conditioning performance. Furthermore, different pressure ratios correspond to different initial and maximum opening degrees of the bypass electronic expansion valve. Therefore, the bypass electronic expansion valve can be adjusted according to the initial and maximum opening degrees, achieving precise control of the bypass electronic expansion valve. Moreover, the maximum opening degree of the bypass electronic expansion valve can also be adjusted according to the degree of noise reduction, further improving the flexibility and accuracy of the bypass electronic expansion valve control.

[0061] Of course, if the compressor is not in noise control mode based on the current pressure ratio, current guide vane valve opening, current water temperature, and current compressor load, the bypass electronic expansion valve can still be periodically increased in operation. However, in this case, the initial opening of the bypass electronic expansion valve remains at the current valve opening.

[0062] In this embodiment, multiple experiments are conducted based on the compressor's structural performance and the air conditioner's operating scenarios to obtain the correspondence between the compressor's pressure ratio and the initial and maximum opening degrees. For example, in some embodiments, if the bypass electronic expansion valve cannot reduce noise generation even after increasing its operation to the corresponding current maximum opening degree, the maximum opening degree in the stored correspondence can be adjusted. That is, after controlling the bypass electronic expansion valve to increase its operation until it reaches the current maximum opening degree, when it is determined that the compressor is in noise control mode, the current maximum opening degree that matches the current pressure ratio is increased.

[0063] This allows for flexible adjustment of the maximum opening to match the pressure ratio, further ensuring the reduction of noise generation through control of the bypass electronic expansion valve, and improving the flexibility and accuracy of bypass electronic expansion valve control.

[0064] The following describes the operation process in a specific embodiment, illustrating the air conditioning control process provided by the embodiments of the present invention.

[0065] In one embodiment of this disclosure, the air conditioner stores initial pressures P0 = 1.63, P1 = 2, P2 = 2.5, E1 = 30%, E2 = 40%, and E1 = 60. The correspondence between the stored compressor pressure ratio and the initial and maximum opening degrees is shown in Table 2. Furthermore, the first set period T1 = 10s, and the set opening degree is 5%.

[0066]

[0067] Table 2

[0068] Figure 2 This is a schematic flowchart of an air conditioning control method provided in an embodiment of this 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 if the current water temperature meets the load reduction water temperature condition that matches the current working mode. If yes, proceed to step 203; otherwise, return to step 201.

[0071] Specifically, if the current operating mode is cooling mode, and the current water temperature is lower than the target water temperature, then the current water temperature is determined to meet the load reduction water temperature condition matching the cooling mode, and step 203 can be executed. If the current operating mode is heating mode, and the current water temperature is higher than the target water temperature, then the current water temperature is determined to meet the load reduction water temperature condition matching the heating mode, and step 203 can be executed.

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

[0073] Step 204: Based on the current pressure ratio, current guide vane valve opening, current water temperature, and current compressor load status, does the air conditioner determine whether the compressor is in noise control mode? If yes, proceed to step 205; otherwise, proceed to step 211.

[0074] Step 205: The air conditioner determines the current initial opening and 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: Has the current time reached the time that matches the first set period? If yes, proceed to step 207; otherwise, proceed to step 206.

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

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

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

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

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

[0082] Step 211: The air conditioning control bypass electronic expansion valve increases in size 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 3i1.

[0095] At this time, P2 ≤ Pr.

[0096] Step 310: The air conditioner determines that the compressor is in the noise control mode. <0�\000211>

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

[0098] As can be seen, in this embodiment, during the unloaded operation of the air conditioning compressor, when the pressure ratio between the compressor's discharge pressure and suction pressure is relatively large, the bypass electronic expansion valve can be opened, and the opening degree of the compressor's bypass electronic expansion valve can be increased. This allows more high-pressure side gas to bypass to the low-pressure side, increasing the pressure on the low-pressure side and reducing the compressor's pressure ratio. This reduces noise generated by friction between the airflow and the IGV (Inlet Gas Ventilation Valve), thus improving the air conditioning performance. Furthermore, different pressure ratios correspond to different initial and maximum opening degrees of the bypass electronic expansion valve. Therefore, the bypass electronic expansion valve can be adjusted according to the initial and maximum opening degrees, achieving precise control of the bypass electronic expansion valve.

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

[0100] Figure 4 This is a schematic diagram of a structure for an air conditioning control device provided in an embodiment of this 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 the current pressure ratio between the current discharge pressure and the current suction pressure of the compressor, and to acquire the current guide vane valve opening of the compressor intake guide vane, when it is determined that the air conditioning compressor is in unloaded operation.

[0102] The determination module 420 is configured to determine the current initial opening and current maximum opening of the bypass electronic expansion valve based on the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load status of the compressor when the compressor is determined to be in noise control mode.

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

[0104] In some embodiments, the system further includes: a load reduction determination module, configured to determine that the air conditioning compressor is operating under reduced load when the air conditioner is in cooling mode and the current water temperature is lower than the target water temperature; and to determine that the air conditioning compressor is operating under reduced load when the air conditioner is in heating mode and the current water temperature is higher than the target water temperature.

[0105] In some embodiments, the determining 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 at the minimum load state; and to determine that the compressor is in noise control mode 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.

[0107] In some embodiments, the noise determination unit is further configured to: determine that the compressor is in a noise control mode when the current pressure ratio is greater than the initial pressure ratio and less than the first pressure ratio, and the current guide vane valve opening is less than the first guide vane opening; determine that the compressor is in a 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, and the current guide vane valve opening is less than the second guide vane opening; determine that the compressor is in a noise control mode when the current pressure ratio is greater than or equal to the second pressure ratio, and the current guide vane valve opening is less than the third guide vane opening; 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 determining module 420 includes:

[0109] The opening determination unit is configured to, when the current pressure ratio is less than a 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, when the current time reaches a time matching a first set period, obtain the current bypass valve opening of the bypass electronic expansion valve, wherein when the current time is the start time, the current bypass valve opening is the current start opening; determine the sum between the current bypass valve opening and the set opening as the valve opening after the increase, determine the updated current bypass valve opening by the smaller value between the increased valve opening and the current maximum valve opening, and control the bypass electronic expansion valve to operate according to the updated current bypass valve opening.

[0111] In some embodiments, the system further includes: an adjustment module configured to control the bypass electronic expansion valve to increase its operation until it reaches the current maximum opening, and then, 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 an 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 obtain 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 obtain the current guide - valve 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 - valve 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] Therefore, after adjusting the current bypass valve opening of the bypass electronic expansion valve to the current initial opening, if the current time reaches a moment that matches the first set cycle, the control module 430 obtains the current bypass valve opening Kd of the bypass electronic expansion valve. When (Kd+5%) is less than the current maximum opening, the bypass electronic expansion valve is opened to (Kd+5%) and operated until it 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 running, the adjustment module 450 can increase the current maximum opening that matches the current pressure ratio in Table 2, based on the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load status of the compressor, when the compressor is in noise control mode.

[0120] Of course, if the determining module 420 determines that the compressor is not in noise control mode based on the current pressure ratio, current guide vane valve opening, current water temperature, and current compressor load status, the control module 430 can control the bypass electronic expansion valve to increase its adjustment according to a first set cycle, increasing by 5% each time. This periodic adjustment can start from the current opening of the bypass electronic expansion valve and end at its maximum valve opening. The current opening may be 0%, 5%, 10%, or 25%, while the maximum valve opening is determined by the performance of the bypass electronic expansion valve and does not need to be determined by the pressure ratio.

[0121] As can be seen, in this embodiment, during the unloaded operation of the air conditioning compressor, when the pressure ratio between the compressor's discharge pressure and suction pressure is relatively large, the device used for air conditioning control can open the bypass electronic expansion valve and increase its opening degree. This allows more high-pressure side gas to bypass to the low-pressure side, increasing the pressure on the low-pressure side and reducing the compressor's pressure ratio. This reduces noise generated by friction between the airflow and the IGV (Inlet Gas Ventilation Valve), improving the air conditioning performance. Furthermore, different pressure ratios correspond to different initial and maximum opening degrees of the bypass electronic expansion valve. Thus, the bypass electronic expansion valve can be adjusted according to its initial and maximum opening degrees, achieving precise control. Moreover, the maximum opening degree of the bypass electronic expansion valve can be adjusted based on the degree of noise reduction, further improving the flexibility and accuracy of the bypass electronic expansion valve control.

[0122] Combination Figure 6 This disclosure provides an apparatus 600 for air conditioning control, comprising:

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

[0124] Furthermore, the logic instructions in the aforementioned memory 1001 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

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

[0126] The memory 1001 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 1001 may include high-speed random access memory and may also include non-volatile memory.

[0127] This disclosure provides an air conditioning control device, including: 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 This disclosure provides an air conditioner 700, including an air conditioner body and the aforementioned air conditioner control device 400 (600). The air conditioner control device 400 (600) is mounted on the air conditioner body. The mounting relationship described herein is not limited to placement inside the product, but also includes mounting connections with other components of the product, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the air conditioner control device 400 (600) can be adapted to feasible air conditioner bodies to achieve other feasible embodiments.

[0129] This disclosure provides a storage medium storing program instructions that, when executed, perform the method for air conditioning control as described above.

[0130] This disclosure provides a computer program product, which includes a computer program stored on a storage medium. The computer program includes program instructions, which, when executed by a computer, cause the computer to perform the above-described air conditioning control method.

[0131] The aforementioned storage medium can be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0132] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0133] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or replace parts and features of other embodiments. The scope of the embodiments of this disclosure includes the entire scope of the claims and all available equivalents of the claims. While the terms “first,” “second,” etc., may be used in this application to describe elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be called a second element without changing the meaning of the description, and similarly, a second element may be called a first element, provided that all occurrences of “first element” are consistently renamed and all occurrences of “second element” are consistently renamed. First and second elements are both elements, but may not be the same element. Moreover, the terminology used in this application is only for describing embodiments and is not intended to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to also include the plural forms. Similarly, the term “and / or” as used herein means including one or more of the associated listed elements and all possible combinations thereof. Additionally, when used herein, the terms “comprise” and its variations “comprises” and / or “comprising” refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase “comprising an…” does not exclude the presence of additional identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0134] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0135] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0136] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for air conditioning control, characterized by, The air conditioner compressor includes a bypass electronic expansion valve, comprising: In the case of determining that the air conditioner compressor is in a load reduction operation, the current pressure ratio between the current discharge pressure and the current suction pressure of the compressor is obtained, and the current guide vane opening of the compressor inlet guide vane is obtained; In the case of determining that the compressor is in a noise control mode according to the current pressure ratio, the current initial opening and the current maximum opening of the bypass electronic expansion valve are determined according to the current pressure ratio; After adjusting the bypass electronic expansion valve to the current initial opening, the bypass electronic expansion valve is controlled to increase operation at a first set period until the current maximum opening is reached; The determination that the compressor is in a noise control mode comprises: In the case of the current water temperature being less than the first set temperature, if the current load state of the compressor is in the minimum load state, the current pressure ratio is compared with the initial pressure ratio; In the case of the current pressure ratio being greater than the initial pressure ratio, if the current guide vane opening is in the minimum set opening, it is determined that the compressor is in a noise control mode.

2. The method of claim 1, wherein, The determination that the air conditioner compressor is in a load reduction operation comprises: In the case of the air conditioner being in a cooling mode operation, in the case of the current water temperature being less than the target water temperature, it is determined that the air conditioner compressor is in a load reduction operation; In the case of the air conditioner being in a heating mode operation, in the case of the current water temperature being greater than the target water temperature, it is determined that the air conditioner compressor is in a load reduction operation.

3. The method of claim 1, wherein, The determination that the compressor is in a noise control mode further comprises: In the case of the current pressure ratio being greater than the initial pressure ratio and less than the first pressure ratio, if the current guide vane opening is less than the first guide opening, it is determined that the compressor is in a noise control mode; In the case of the current pressure ratio being greater than or equal to the first pressure ratio and less than the second pressure ratio, if the current guide vane opening is less than the second guide opening, it is determined that the compressor is in a noise control mode; In the case of the current pressure ratio being greater than or equal to the second pressure ratio, if the current guide vane opening is less than the third guide opening, it is determined that the compressor is in a noise control mode; Wherein, the second guide opening is greater than the first guide opening and less than the third guide opening.

4. The method of claim 1, wherein, The determination of the current initial opening and the current maximum opening of the bypass electronic expansion valve according to the current pressure ratio comprises: In the case of the current pressure ratio being 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; In the case of the current pressure ratio being 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; In the case of the current pressure ratio being 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, and the second maximum opening is less than the first maximum opening and less than the third maximum opening.

5. The method according to any one of claims 1 to 4, characterized in that, The control of the bypass electronic expansion valve to increase operation until the current maximum opening is reached comprises: In a case where the current time matches the time matching the first set period, a current bypass valve opening degree of the bypass electronic expansion valve is obtained, wherein the current bypass valve opening degree is a current start opening degree when the current time is the start time; A sum between the current bypass valve opening degree and the set opening degree is determined as an increased valve opening degree, and a smaller value between the increased valve opening degree and the current maximum valve opening degree is determined as an updated current bypass valve opening degree, and the bypass electronic expansion valve is controlled to operate according to the updated current bypass valve opening degree.

6. The method of claim 5, wherein, The control of the bypass electronic expansion valve to increase operation until the current maximum opening degree is reached further comprises: In a case where it is determined that the compressor is in the noise control mode, the current maximum opening degree matching the current pressure ratio is increased.

7. An apparatus for air conditioning control, characterized by, Comprises: The obtaining module is configured to, in a case where it is determined that the air conditioner compressor is in the load reduction operation, obtain a current pressure ratio between a current discharge pressure and a current suction pressure of the compressor, and obtain a current guide vane valve opening degree of a compressor inlet guide vane; The determining module is configured to, in a case where it is determined that 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, determine a current initial opening degree and a current maximum opening degree of the bypass electronic expansion valve according to the current pressure ratio; The control module is configured to, after adjusting the bypass electronic expansion valve to the current initial opening degree, control the bypass electronic expansion valve to increase operation at a first set period until the current maximum opening degree is reached. The determining module comprises: The noise determining unit is configured to, in a case where the current water temperature is less than a first set temperature, compare the current pressure ratio with an initial pressure ratio if the current load state of the compressor is in a minimum load state; and in a case where the current pressure ratio is greater than the initial pressure ratio, determine that the compressor is in the noise control mode if the current guide vane valve opening degree is in a minimum set opening degree.

8. An apparatus for air conditioning control, the apparatus comprising a processor and a memory having stored therein program instructions, the apparatus being characterized by: The processor is configured to execute the method for air conditioner control according to any one of claims 1 to 6 when executing the program instructions.

9. An air conditioner characterized by comprising: Comprises: An air conditioner body; The device for air conditioner control according to claim 7 or 8 is installed in the air conditioner body.

10. A storage medium storing program instructions, characterized in that, The program instructions execute the method for air conditioner control according to any one of claims 1 to 6 when running.

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