Control method and device of electronic expansion valve, electronic equipment and storage medium

Abstract

This application relates to a control method, device, electronic equipment, and storage medium for an electronic expansion valve. The method includes: when the air conditioner is in compressor cooling mode, determining whether the valve needle is out of sync based on the opening deviation between the actual opening degree and the target opening degree of the valve needle; wherein the target opening degree is the opening degree required by the air conditioner in the current operating state; if the valve needle is out of sync, controlling the electronic expansion valve to enter a calibration mode to perform one or more sets of out-of-sync calibrations on the valve needle; wherein each set of out-of-sync calibrations is used to adjust the opening deviation; after performing one or more sets of out-of-sync calibrations, and if the valve needle is no longer out of sync, controlling the electronic expansion valve to exit the calibration mode. Using the above method, the actual opening degree of the valve needle is obtained in real time, and the valve needle is calibrated promptly when it is out of sync, thus resolving the problem of valve jamming and out-of-sync in the electronic expansion valve in a timely manner.

Description

Technical Field

[0001] This application relates to the field of air conditioners, and more particularly to a control method, device, electronic equipment, and storage medium for an electronic expansion valve. Background Technology

[0002] In the refrigeration circuit of an air conditioning system, impurities may be transported into the pipeline due to refrigerant purity issues. When these impurities pass through the valve core of the electronic expansion valve, they can cause irreversible damage to the valve needle and valve seat over a long period of time, which can easily lead to problems such as valve jamming and loss of synchronization in the electronic expansion valve.

[0003] In the prior art, in order to solve the problem of valve jamming and loss of synchronization in electronic expansion valves, the valve needle of the electronic expansion valve is usually calibrated by performing a reset action of the electronic expansion valve at regular intervals to ensure the accuracy of the electronic expansion valve.

[0004] Existing electronic expansion valve calibration methods cannot obtain the actual state of the electronic expansion valve in a timely and effective manner, making it difficult to deal with the valve jamming and loss of synchronization problems that occur before the timed reset. Summary of the Invention

[0005] This application provides a control method, device, electronic equipment, and storage medium for an electronic expansion valve, so as to promptly resolve the problem of valve jamming and loss of synchronization in the electronic expansion valve.

[0006] In a first aspect, this application provides a control method for an electronic expansion valve, comprising: When the air conditioner is in compressor cooling mode, the valve needle is judged to be out of sync based on the opening deviation between the actual opening degree and the target opening degree of the electronic expansion valve; wherein, the target opening degree is the opening degree required by the air conditioner in the current operating state. When the valve needle is in the out-of-step state, the electronic expansion valve is controlled to enter the calibration mode to perform one or more sets of out-of-step calibrations on the valve needle; wherein, each set of out-of-step calibrations is used to adjust the opening deviation amount; After performing one or more sets of out-of-step calibrations, and if the valve needle is not in the out-of-step state, control the electronic expansion valve to exit the calibration mode.

[0007] Secondly, this application provides a control device for an electronic expansion valve, comprising: The acquisition module is used to determine whether the valve needle is out of sync when the air conditioner is in compressor cooling mode, based on the opening deviation between the actual opening degree and the target opening degree of the electronic expansion valve needle; wherein, the target opening degree is the opening degree required by the air conditioner in the current operating state. The calibration module is used to control the electronic expansion valve to enter the calibration mode to perform one or more sets of out-of-step calibrations on the valve needle when the valve needle is in the out-of-step state; wherein each set of out-of-step calibrations is used to adjust the opening deviation amount; The exit module is used to control the electronic expansion valve to exit the calibration mode after one or more sets of out-of-step calibrations, and when the valve needle is not in the out-of-step state.

[0008] Thirdly, this application provides an electronic device, comprising: at least one communication interface; at least one bus connected to the at least one communication interface; at least one processor connected to the at least one bus; and at least one memory connected to the at least one bus, wherein the processor is configured to execute a control method for an electronic expansion valve as described in the first aspect of this application.

[0009] Fourthly, this application also provides a computer storage medium storing computer-executable instructions for executing a control method for an electronic expansion valve as described in any of the preceding claims of this application.

[0010] Compared with the prior art, the technical solution provided in this application has the following advantages: The method provided in this application acquires the actual opening degree of the valve needle in real time when the valve needle of the electronic expansion valve is working, and determines whether the valve needle is in a state of being out of sync based on the actual opening degree of the valve needle and the target opening degree of the electronic expansion valve. When the valve needle is in a state of being out of sync, the electronic expansion valve is immediately controlled to enter the calibration mode to calibrate the valve needle, thereby promptly resolving the problem of valve jamming and being out of sync in the electronic expansion valve. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0014] Figure 1This is a schematic diagram of the structure of an electronic expansion valve in a control method for an electronic expansion valve provided in an embodiment of this application; Figure 2 A schematic flowchart illustrating a control method for an electronic expansion valve provided in an embodiment of this application; Figure 3 A schematic diagram of the out-of-step calibration process in a control method for an electronic expansion valve provided in this application embodiment; Figure 4 A schematic diagram of the reset control process in a control method for an electronic expansion valve provided in an embodiment of this application; Figure 5 This is another schematic diagram of the reset control in a control method for an electronic expansion valve provided in an embodiment of this application; Figure 6 A schematic diagram of the structure of a control device for an electronic expansion valve provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0017] To address the technical problem that existing electronic expansion valve calibration methods cannot obtain the actual state of the electronic expansion valve in a timely and effective manner, and are therefore unable to cope with the valve jamming and loss of synchronization issues that occur before timed reset, this application provides a control method for an electronic expansion valve. By timely obtaining the actual opening degree of the valve needle, it is determined whether the valve needle is in a loss of synchronization state. When the valve needle is in a loss of synchronization state, the electronic expansion valve is immediately controlled to enter the calibration mode, thereby calibrating the valve needle and enabling the valve jamming and loss of synchronization issues of the electronic expansion valve to be resolved in a timely manner.

[0018] To more clearly illustrate the embodiments provided in this application, the working principle of the electronic configuration valve will first be explained.

[0019] Figure 1 This is a schematic diagram of the structure of the electronic expansion valve in a control method for an electronic expansion valve provided in an embodiment of this application, as shown below. Figure 1 As shown, the electronic expansion valve mainly includes a pipe, a valve stem, a valve needle, and a valve seat. When the air conditioner is in compressor cooling mode, the refrigerant flows in the pipe of the electronic expansion valve core, from the pipe inlet to the pipe outlet. The valve seat is located on the inner wall of the pipe, and the valve stem is located in the pipe with the valve seat. The valve stem can be displaced along the direction of the pipe with the valve seat under the action of the drive motor. The valve needle is connected to the end of the valve stem near the valve seat. A displacement sensor is installed on the valve needle, which can detect the position of the valve needle in real time, thereby obtaining the current opening degree of the valve needle.

[0020] When refrigerant flow control is required, the valve stem, driven by the motor, moves up and down along the pipe, causing the valve needle to move closer to or further away from the valve seat. When the valve needle approaches the valve seat, the flow rate of refrigerant in the pipe decreases; when the valve needle moves away from the valve seat, the flow rate of refrigerant in the pipe increases. The distance between the valve needle and the valve seat is the valve needle opening.

[0021] Figure 2 A flowchart illustrating a control method for an electronic expansion valve provided in an embodiment of this application is shown below. Figure 2 As shown, this application provides a control method for an electronic expansion valve, the method comprising the following steps: S201: When the air conditioner is in compressor cooling mode, determine whether the valve needle is out of sync based on the opening deviation between the actual opening degree and the target opening degree of the electronic expansion valve needle; where the target opening degree is the opening degree required by the air conditioner in the current operating state. Specifically, the actual opening degree is the opening degree of the valve needle at the current moment. The actual opening degree of the valve needle can be obtained through a displacement sensor. The displacement sensor is set on the valve needle and can detect the position of the valve needle in real time. Based on the position of the valve needle, the actual opening degree of the valve needle is obtained, that is, the actual number of steps of the distance between the valve needle and the valve seat. The target opening degree is the opening degree that the air conditioner should have in the current operating state. For the air conditioner, it has different target opening degrees in different operating states.

[0022] It should be noted that both the actual opening degree and the target opening degree are numerical values ​​describing relative positions. In one feasible embodiment of this application, the target opening degree and the actual opening degree are determined based on the valve seat. For example, if the valve seat position is set to 0, and the valve needle is currently 2 steps away from the valve seat, then the actual opening degree of the valve needle is 2 steps. As another example, if the valve seat position is also set to 0, and the air conditioner is in cooling mode at 24°C, the valve needle should be 4 steps away from the valve seat; then the target opening degree of the valve needle is 4 steps.

[0023] The opening deviation is the step difference between the actual opening and the target opening. It can be obtained by subtracting the target opening from the actual opening and then taking the absolute value of the subtraction result. For example, if the current actual valve needle opening is 3 steps and the target opening is 5 steps, then the opening deviation is 2 steps.

[0024] In one feasible embodiment of this application, the valve needle is determined to be out of step based on the opening deviation.

[0025] Specifically, if the opening deviation is 0, it is determined that the valve needle is not out of step; if the opening deviation is not 0, it is determined that the valve needle is out of step.

[0026] If the opening deviation is 0, it means that the actual opening of the valve needle is equal to the target opening. The electronic expansion valve can accurately adjust the actual opening of the valve needle to the target opening, so that the actual opening of the valve needle is the same as the target opening, and the valve needle is not out of step. If the opening deviation is not 0, it means that the actual opening of the valve needle is not equal to the target opening. The valve needle is not currently in the position it should be in. The electronic expansion valve cannot accurately adjust the actual opening of the valve needle to the target opening, and the valve needle is out of step.

[0027] S202: When the valve needle is out of step, control the electronic expansion valve to enter the calibration mode to perform one or more sets of out-of-step calibrations on the valve needle; wherein, each set of out-of-step calibrations is used to adjust the opening deviation. Specifically, after determining that the valve needle is out of step, a control command is sent to the electronic expansion valve to make the electronic expansion valve enter the calibration mode and perform one or more sets of out-of-step calibrations on the valve needle.

[0028] Figure 3 This is a schematic diagram of the out-of-step calibration process in a control method for an electronic expansion valve provided in an embodiment of this application, as shown below. Figure 3 As shown, when performing one or more sets of out-of-step calibrations on the valve needle, the specific steps include: S301: Increase the number of out-of-step calibration groups by 1; Specifically, after the electronic expansion valve enters the calibration mode, the number of out-of-step calibration groups is recorded as 1; after each out-of-step calibration is completed, the out-of-step calibration group number is incremented by 1.

[0029] S302: Controls the valve needle displacement to increase the opening deviation; Specifically, the valve needle is controlled to move within the pipeline, thereby increasing the valve needle's opening deviation. It can be understood that when controlling the valve needle's displacement, the needle can move away from or towards the valve seat. The specific direction and number of steps of displacement are determined based on the opening deviation, as long as the result of the valve needle's displacement leads to the opening deviation.

[0030] For example, taking the valve seat as a reference, the valve seat's step count is 0, the target opening degree of the valve needle is 4 steps, and the current actual opening degree of the valve needle is 2 steps. At this time, the valve needle's opening degree deviation is 2 steps. The valve needle can then be controlled to move closer to the valve seat, so that the valve needle's opening degree deviation after displacement is 3 steps.

[0031] It should be understood that since the valve needle is out of step at this time, if the valve needle is directly controlled to move one step closer to the valve seat, the actual action of the valve needle may not be to move one step closer to the valve seat. At this time, the valve needle can be directly controlled to move closer to the valve seat, but the number of valve needle displacement steps is not limited. When the valve needle opening deviation increases, the valve needle is controlled to stop moving.

[0032] S303: Controls the valve needle displacement to reduce the opening deviation; S304: Determine if the valve needle is out of step.

[0033] Specifically, the actual opening degree of the valve needle after completing two displacements is obtained, and the opening degree deviation of the valve needle after completing two displacements is determined based on the actual opening degree of the valve needle after completing two displacements and the target opening degree, thereby determining whether the valve needle is in a state of loss of synchronization.

[0034] If the valve needle remains out of step after completing one set of out-of-step calibrations, repeat steps S301-S303 above to perform the next set of out-of-step calibrations on the valve needle.

[0035] If the valve needle is not out of step after completing one set of out-of-step calibrations, then the next set of out-of-step calibrations will not be performed.

[0036] In one feasible embodiment of this application, the valve needle is severely damaged and cannot be restored even after multiple sets of out-of-step calibrations. To prevent further damage to the valve needle due to multiple sets of out-of-step calibrations, and also to expedite the valve needle out of the out-of-step state, an exit condition is set. When the valve needle remains in the out-of-step state after multiple sets of out-of-step calibrations, the exit condition is triggered, causing the valve needle to stop undergoing further out-of-step calibrations.

[0037] The exit condition can be to perform a set number of out-of-step calibrations. In one feasible embodiment of this application, the set number of groups is 2, that is, after two sets of out-of-step calibrations are repeatedly performed, no further out-of-step calibrations will be performed.

[0038] Another condition for exiting the calibration is that the valve needle opening deviation after the current set of out-of-step calibrations is greater than the valve needle opening deviation after the previous set of out-of-step calibrations. If the valve needle opening deviation after the current set of out-of-step calibrations is greater than the valve needle opening deviation after the previous set of out-of-step calibrations, it means that the current set of out-of-step calibrations has failed to adjust the valve needle well, and has instead made the out-of-step state of the valve needle more serious. In this case, the next set of out-of-step calibrations will not be performed.

[0039] S203: After performing one or more sets of out-of-step calibrations, and if the valve needle is not in an out-of-step state, control the electronic expansion valve to exit the calibration mode.

[0040] Specifically, after performing one or more sets of out-of-step calibrations, the valve needle's current out-of-step state is determined again based on the valve needle's opening deviation. If the valve needle is not out of step, it indicates that the valve needle has returned to normal after one or more sets of out-of-step calibrations. At this point, the electronic expansion valve is controlled to exit the calibration mode, completing the calibration of the electronic expansion valve.

[0041] By performing one or more sets of out-of-step calibrations on the valve needle, and attempting to repair and adjust the electronic expansion valve while it remains operational, the problem of valve jamming and out-of-step operation can be resolved in a timely manner.

[0042] In one feasible embodiment of this application, after one or more sets of out-of-step calibrations are performed, and the valve needle is in an out-of-step state, the electronic expansion valve is controlled to enter a reset mode to reset the valve needle.

[0043] Figure 4 This is a schematic flowchart of the reset control in a control method for an electronic expansion valve provided in an embodiment of this application, as shown below. Figure 4 As shown, if the valve needle remains out of step after one or more sets of out-of-step calibrations, a reset control is performed on the valve needle. The reset control includes the following steps: S401: Switch the air conditioner's operating mode to fan cooling mode; Specifically, when the valve needle is reset, the electronic expansion valve cannot function properly, causing the air conditioner operating in compressor cooling mode to shut down. However, for air conditioners in special cooling scenarios, it is necessary to ensure the ambient temperature of the special cooling scenario, such as the environment of a computing center server, and they cannot be shut down arbitrarily.

[0044] Therefore, when the electronic expansion valve enters the reset mode, a mode switching command is sent to the air conditioner to switch the air conditioner's current operating mode from compressor cooling mode to fan cooling mode.

[0045] By switching the air conditioner's operating mode before resetting the control, the fan temporarily maintains the ambient temperature for the special cooling scenario, avoiding the rise in ambient temperature caused by the electronic expansion valve's reset control, thereby improving the operational reliability of the air conditioner unit when the electronic expansion valve fails.

[0046] S402: Controls the valve needle to move so that the electronic expansion valve is fully open; Specifically, a control command is sent to the electronic expansion valve to cause the valve needle to continuously move away from the valve seat along the pipeline until the maximum number of steps is reached, causing the electronic expansion valve to fully open and no longer be able to move.

[0047] S403: Controls the valve needle to move so that the opening of the electronic expansion valve is 0, thus completing the reset control.

[0048] Specifically, a control command is sent to the electronic expansion valve to cause the valve needle to continuously move along the pipeline towards the valve seat until it is in close contact with the valve seat, so that the opening of the electronic expansion valve is 0 and can no longer move.

[0049] By resetting the electronic expansion valve, if the electronic expansion valve cannot be restored to normal operation through out-of-step calibration of the valve needle, further repairs can be performed on the electronic expansion valve.

[0050] Figure 5 This is a schematic diagram of the reset control process in one feasible embodiment of this application, referring to... Figure 5 To ensure that the ambient temperature remains at the level maintained by the air conditioner before the reset control is completed, when the air conditioner switches back to the compressor cooling mode, the embodiment further includes the following, compared to the above-described reset control embodiment: The operating parameters of the air conditioner in compressor cooling mode are stored; after the reset control is completed, and provided that the valve needle is not out of step, the operating mode of the air conditioner is switched to compressor cooling mode according to the operating parameters.

[0051] Specifically, after completing the reset control, it is determined whether the valve needle is in a lost-step state. If the valve needle is not in a lost-step state after completing the reset control, it indicates that the reset control has successfully repaired the electronic expansion valve. Before switching the air conditioner's operating mode to fan-cooling mode, the operating parameters of the air conditioner in compressor cooling mode are stored. After completing the reset control and the electronic expansion valve returns to normal, the air conditioner is switched from fan-cooling mode to compressor cooling mode based on the stored operating parameters.

[0052] By adopting the technical solution provided in this embodiment, the operating parameters of the air conditioner are the same when it is running in compressor cooling mode before and after the reset control, thus ensuring the stability of the ambient temperature maintained by the air conditioner.

[0053] Continue to refer to Figure 5 In one feasible embodiment of this application, the electronic expansion valve still cannot be restored to normal operation even after the above-mentioned out-of-step calibration and reset control. If the valve needle remains out of step after the reset control, it can be determined that the valve needle of the electronic expansion valve has suffered a serious malfunction and is difficult to recover through program control. To ensure that the air conditioner can maintain a relatively good working state even in the event of a serious malfunction of the electronic expansion valve, over-opening or over-closing control is applied to the valve needle.

[0054] Over-opening or over-closing control of the valve needle includes: when the valve needle is out of step, determining the valve needle opening adjustment value based on the opening deviation; and performing over-opening or over-closing control of the valve needle based on the opening adjustment value.

[0055] Specifically, if the valve needle is still out of step after being reset, the actual opening degree and the target opening degree of the valve needle after being reset are obtained, the opening degree deviation of the valve needle after being reset is calculated, and the opening degree deviation is used as the opening degree adjustment value for subsequent valve needle over-opening control or over-closing control.

[0056] After obtaining the opening adjustment value, when controlling the valve needle in the future, the opening adjustment value is added to the actual movement step of the valve needle to control the valve needle to open too much; the opening adjustment value is subtracted from the actual movement step of the valve needle to control the valve needle to close too much.

[0057] For example, taking the valve seat as the reference, the valve seat step count is 0, the current target opening is 4 steps, and the current actual valve needle opening is 2 steps. At this time, the valve needle opening deviation is 2 steps, and the obtained opening adjustment value is 2 steps.

[0058] After calculating the opening adjustment value, if the target opening of the valve needle is greater than the actual opening after subsequent valve needle movements, it indicates that the actual movement step of the valve needle is too small. In this case, over-opening control is applied to the valve needle by adding the opening adjustment value to the actual movement step of the valve needle. For example, if the target opening of the valve needle is 4 steps, the actual opening is 1 step, and the calculated opening adjustment value is 2 steps, then 2 steps of opening adjustment value are added to the actual movement step of the valve needle to make the actual opening of the valve needle as close as possible to the target opening.

[0059] If the target opening of the valve needle is smaller than the actual opening, it indicates that the actual movement step of the valve needle is too large. In this case, the valve needle is subjected to pass control by subtracting the opening adjustment value from the actual movement step of the valve needle. For example, if the target opening of the valve needle is 3 steps, the actual opening is 6 steps, and the calculated opening adjustment value is 2 steps, then the opening adjustment value of 2 steps is subtracted from the actual movement step of the valve needle to make the actual opening of the valve needle as close as possible to the target opening.

[0060] In one feasible embodiment of this application, when the valve needle is over-opened or over-closed, the touch screen or indicator light of the air conditioner unit will alarm to indicate that the electronic expansion valve has failed and needs to be replaced, thereby prompting the user to contact maintenance personnel to repair or replace the electronic expansion valve in a timely manner.

[0061] Based on the above description of one or more embodiments, the technical solution provided by this application, when the valve needle of the electronic expansion valve is in a non-synchronous state, firstly calibrates the valve needle through one or more sets of non-synchronous calibrations, attempting to restore the electronic expansion valve to a normal working state while keeping the air conditioner running; when one or more sets of non-synchronous calibrations fail to restore the electronic expansion valve to a normal working state, the operating mode of the air conditioner is switched to the fan cooling mode, causing the electronic expansion valve to stop working, and the electronic expansion valve is reset; if the reset control still fails to restore the electronic expansion valve to a normal working state, the electronic expansion valve is over-opened or over-closed, and the user is promptly prompted to contact maintenance personnel to repair the electronic expansion valve.

[0062] The technical solution provided in this application allows for timely acquisition of the actual opening degree of the valve needle of the electronic expansion valve. Based on the actual opening degree, the valve needle opening deviation is determined, thereby identifying whether the valve needle is in a state of being out of step. When the valve needle is in a state of being out of step, it is calibrated in a timely manner, thus enabling the timely resolution of the valve jamming and out-of-step problem in the electronic expansion valve.

[0063] Corresponding to the above method embodiments, this application also provides a control device for an electronic expansion valve, such as... Figure 6 As shown, the device may include: an acquisition module 601, a calibration module 602, and an exit module 603.

[0064] The acquisition module 601 is used to determine whether the valve needle is out of sync when the air conditioner is in compressor cooling mode, based on the opening deviation between the actual opening degree and the target opening degree of the electronic expansion valve needle; wherein, the target opening degree is the opening degree required by the air conditioner in the current operating state. The calibration module 602 is used to control the electronic expansion valve to enter the calibration mode to perform one or more sets of out-of-step calibrations on the valve needle when the valve needle is in an out-of-step state; wherein each set of out-of-step calibrations is used to adjust the opening deviation. The exit module 603 is used to control the electronic expansion valve to exit the calibration mode after one or more sets of out-of-step calibrations, and when the valve needle is not in an out-of-step state.

[0065] In one possible implementation, the acquisition module 601 includes: The first judgment unit is used to determine that the valve needle is out of step when the opening deviation is not zero. The second judgment unit is used to determine that the valve needle is not out of step when the opening deviation is 0.

[0066] In one possible implementation, the calibration module 602 includes: The enlargement unit is used to control the valve needle displacement to increase the opening deviation. The reduction unit is used to control the valve needle displacement to reduce the opening deviation.

[0067] In one possible implementation, a reset module is used to control the electronic expansion valve to enter a reset mode to reset the valve needle after one or more sets of out-of-step calibrations and when the valve needle is in an out-of-step state.

[0068] In one possible implementation, the reset module includes: The storage unit is used to store the operating parameters of the air conditioner in compressor cooling mode; The switching unit is used to switch the air conditioner's operating mode to fan-cooling mode. The first control unit is used to control the displacement of the valve needle to fully open the electronic expansion valve. The second control unit is used to control the displacement of the valve needle so that the opening of the electronic expansion valve is 0, thus completing the reset control.

[0069] In one possible implementation, a determination module is used to determine whether the valve needle is in a step-out state; a switching module is used to switch the air conditioner's operating mode to compressor cooling mode according to operating parameters when the valve needle is not in a step-out state.

[0070] In one possible implementation, the device may further include: The determination module is used to determine the valve needle opening adjustment value based on the opening deviation when the valve needle is in a step-out state. The control module is used to control the valve needle to either open or close based on the opening adjustment value.

[0071] like Figure 7 As shown in the figure, this application provides an electronic device, including a processor 701, a communication interface 702, a memory 703, and a communication bus 704, wherein the processor 701, the communication interface 702, and the memory 703 communicate with each other through the communication bus 704. Memory 703 is used to store computer programs; In one embodiment of this application, when the processor 701 executes the program stored in the memory 703, it implements the method steps included in any of the foregoing method embodiments, for example including: When the air conditioner is in compressor cooling mode, the valve needle is judged to be out of sync based on the opening deviation between the actual opening degree and the target opening degree of the electronic expansion valve; where the target opening degree is the opening degree required by the air conditioner in the current operating state. When the valve needle is out of step, the electronic expansion valve is controlled to enter the calibration mode to perform one or more sets of out-of-step calibrations on the valve needle; each set of out-of-step calibrations is used to adjust the opening deviation. After performing one or more sets of out-of-step calibrations, and provided that the valve needle is not in an out-of-step state, control the electronic expansion valve to exit the calibration mode.

[0072] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of a control method for an electronic expansion valve as provided in any of the foregoing method embodiments.

[0073] The device embodiments described above are merely illustrative. 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 modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0074] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0075] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0076] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A control method for an electronic expansion valve, characterized in that, The method includes: When the air conditioner is in compressor cooling mode, the valve needle is judged to be out of sync based on the opening deviation between the actual opening degree and the target opening degree of the electronic expansion valve; wherein, the target opening degree is the opening degree required by the air conditioner in the current operating state. When the valve needle is in the out-of-step state, the electronic expansion valve is controlled to enter the calibration mode to perform one or more sets of out-of-step calibrations on the valve needle; wherein, each set of out-of-step calibrations is used to adjust the opening deviation amount; After performing one or more sets of out-of-step calibrations, and if the valve needle is not in the out-of-step state, control the electronic expansion valve to exit the calibration mode; The method further includes: after performing one or more sets of out-of-step calibrations, and when the valve needle is in the out-of-step state, controlling the electronic expansion valve to enter a reset mode to reset the valve needle; wherein controlling the electronic expansion valve to enter the reset mode to reset the valve needle includes: storing the operating parameters of the air conditioner in the compressor cooling mode; switching the operating mode of the air conditioner to the fan cooling mode; controlling the valve needle to move so that the electronic expansion valve is fully open; controlling the valve needle to move so that the opening degree of the electronic expansion valve is 0, thus completing the reset control.

2. The method according to claim 1, characterized in that, Determining whether the valve needle is out of sync based on the opening deviation between the actual opening degree and the target opening degree of the electronic expansion valve includes: If the opening deviation is not zero, it is determined that the valve needle is in the out-of-step state; If the opening deviation is 0, it is determined that the valve needle is not in the out-of-step state.

3. The method according to claim 1, characterized in that, The electronic expansion valve is controlled to enter calibration mode to perform one or more sets of out-of-step calibrations on the valve needle, wherein one set of out-of-step calibrations includes: Controlling the valve needle displacement to increase the opening deviation; The valve needle displacement is controlled to reduce the opening deviation.

4. The method according to claim 1, characterized in that, After completing the reset control, the following is included: Determine whether the valve needle is in a stepless state; If the valve needle is not in the out-of-step state, the operating mode of the air conditioner is switched to the compressor cooling mode according to the operating parameters.

5. The method according to claim 4, characterized in that, After determining whether the valve needle is in a stepless state, the method further includes: When the valve needle is in the out-of-step state, the valve needle opening adjustment value is determined based on the opening deviation. The valve needle is controlled to either open or close according to the opening adjustment value.

6. A control device for an electronic expansion valve, characterized in that, include: The acquisition module is used to determine whether the valve needle is out of sync when the air conditioner is in compressor cooling mode, based on the opening deviation between the actual opening degree and the target opening degree of the electronic expansion valve needle; wherein, the target opening degree is the opening degree required by the air conditioner in the current operating state. The calibration module is used to control the electronic expansion valve to enter the calibration mode to perform one or more sets of out-of-step calibrations on the valve needle when the valve needle is in the out-of-step state; wherein each set of out-of-step calibrations is used to adjust the opening deviation amount; The exit module is used to control the electronic expansion valve to exit the calibration mode after one or more sets of out-of-step calibrations have been performed and the valve needle is not in the out-of-step state. The control device further includes: a reset module, used to control the electronic expansion valve to enter a reset mode to reset the valve needle after one or more sets of out-of-step calibrations and when the valve needle is in an out-of-step state; wherein the reset module includes: a storage unit for storing the operating parameters of the air conditioner in compressor cooling mode; a switching unit for switching the operating mode of the air conditioner to fan cooling mode; a first control unit for controlling the valve needle to move so that the electronic expansion valve is fully open; and a second control unit for controlling the valve needle to move so that the opening degree of the electronic expansion valve is 0, thus completing the reset control.

7. An electronic device, characterized in that, include: At least one communication interface; At least one bus connected to the at least one communication interface; At least one processor connected to the at least one bus; At least one memory connected to the at least one bus, wherein the processor is configured to implement the method of any one of claims 1-5.

8. A computer storage medium, characterized in that, The device stores computer-executable instructions for performing the method as described in any one of claims 1-5.

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