Control method and device of air conditioner and air conditioner

Abstract

The application provides a control method and device of an air conditioner and the air conditioner, and is applied to the field of air conditioner control. The method comprises the following steps: obtaining the exhaust temperature of the air conditioner; adjusting the air conditioner through a first adjustment mode and / or a second adjustment mode according to the high or low of the exhaust temperature; wherein the first adjustment mode is to adjust the adjustment speed of the electronic expansion valve opening degree according to the exhaust temperature; and the second adjustment mode comprises at least one of the following: adjusting the electronic expansion valve according to the superheat degree, and adjusting the operating frequency of the compressor according to the exhaust temperature. The control method, device and air conditioner provided by the application can effectively avoid the situation that the exhaust temperature is too high, so as to ensure the stable operation of the air conditioner.

Description

Technical Field

[0001] This application relates to the field of air conditioner control, and more particularly to an air conditioner control method, device, and air conditioner. Background Technology

[0002] As people's living standards continue to improve and the level of intelligence in home appliances continues to rise, smart home appliances are becoming increasingly popular. Users can use air conditioners to heat in winter to raise the indoor temperature, and they can also use air conditioners to cool in summer to lower the indoor temperature.

[0003] In related technologies, when the exhaust temperature of an air conditioner rises to a certain level, limiting the operating frequency of the compressor can ensure that the exhaust temperature remains at a reasonable level. However, when the air conditioner's compressor is running, if the exhaust temperature rises too quickly or becomes too high, reducing the compressor's operating frequency may not be effective in lowering the exhaust temperature, leading to excessively high exhaust temperatures and triggering malfunctions such as the air conditioner shutting down.

[0004] Therefore, there is an urgent need for a technical solution that can effectively avoid excessive exhaust temperature, thereby ensuring the stable operation of the air conditioner. Summary of the Invention

[0005] The purpose of this application is to provide a control method, device, and air conditioner for effectively avoiding excessively high exhaust temperatures, thereby ensuring the stable operation of the air conditioner.

[0006] This application provides a control method for an air conditioner, including:

[0007] Obtain the exhaust temperature of the air conditioner; adjust the exhaust temperature of the air conditioner using a first adjustment method and / or a second adjustment method corresponding to the exhaust temperature; wherein, the first adjustment method is to adjust the adjustment speed of the opening of the electronic expansion valve according to the exhaust temperature; the second adjustment method includes at least one of the following: adjusting the electronic expansion valve according to the superheat, and adjusting the operating frequency of the compressor according to the exhaust temperature.

[0008] Optionally, obtaining the exhaust temperature of the air conditioner includes: obtaining the exhaust temperature of the air conditioner according to a preset collection cycle after the compressor of the air conditioner has been running for a preset period of time.

[0009] Optionally, adjusting the exhaust temperature of the air conditioner using a first adjustment method and / or a second adjustment method corresponding to the exhaust temperature includes: adjusting the opening of the electronic expansion valve using the second adjustment method when the exhaust temperature is less than or equal to a first preset temperature threshold; and compensating the adjustment speed of the electronic expansion valve opening using the first adjustment method based on the adjustment of the electronic expansion valve opening using the second adjustment method when the exhaust temperature is greater than the first preset temperature threshold, until a preset condition is met; wherein the preset condition includes: the exhaust temperature is less than or equal to a second preset temperature threshold, and the compensation value of the adjustment speed of the electronic expansion valve opening using the first adjustment method is reduced to zero; and the second preset temperature threshold is less than the first preset temperature threshold.

[0010] Optionally, when the exhaust temperature is greater than the first preset temperature threshold, in addition to adjusting the opening of the electronic expansion valve using the second adjustment method, the adjustment speed of the electronic expansion valve opening is compensated using the first adjustment method until a preset condition is met. This includes: when the exhaust temperature is greater than the first preset temperature threshold, increasing the compensation value of the adjustment speed of the electronic expansion valve opening by a first adjustment speed until the exhaust temperature begins to decrease, and then adjusting the compensation value of the adjustment speed of the electronic expansion valve opening to zero; when the exhaust temperature begins to decrease, keeping the opening of the electronic expansion valve unchanged until the exhaust temperature is less than or equal to the second preset temperature threshold; when the exhaust temperature is less than or equal to the second preset temperature threshold, decreasing the compensation value of the adjustment speed of the electronic expansion valve opening by a second adjustment speed until the adjustment amount of the electronic expansion valve opening by the first adjustment method is reduced to zero; wherein, the first adjustment speed and the second adjustment speed are both adjustment speeds within one sampling cycle of the exhaust temperature; the first adjustment speed is a positive value, and the second adjustment speed is a negative value.

[0011] Optionally, the step of increasing the opening of the electronic expansion valve at a first adjustment speed when the exhaust temperature is greater than the first preset temperature threshold, until the exhaust temperature begins to decrease, and then adjusting the compensation value of the adjustment speed of the electronic expansion valve opening to zero, includes: when increasing the compensation value of the adjustment speed of the electronic expansion valve opening at the first adjustment speed, if multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature is rising, then controlling the opening of the electronic expansion valve to adjust to the maximum opening, until the exhaust temperature begins to decrease, and then adjusting the compensation value of the adjustment speed of the electronic expansion valve opening to zero.

[0012] Optionally, the step of increasing the opening of the electronic expansion valve at a first adjustment speed when the exhaust temperature is greater than the first preset temperature threshold, until the exhaust temperature begins to decrease, and then adjusting the compensation value of the adjustment speed of the electronic expansion valve opening to zero, includes: when increasing the compensation value of the adjustment speed of the electronic expansion valve opening at the first adjustment speed, if two adjacent exhaust temperature values ​​obtained according to the acquisition cycle are the same, then increasing the compensation value of the adjustment speed of the electronic expansion valve opening at a third adjustment speed, until the exhaust temperature begins to decrease, and then adjusting the compensation value of the adjustment speed of the electronic expansion valve opening to zero; wherein, the third adjustment speed is less than the first adjustment speed, and the third adjustment speed is a positive value.

[0013] Optionally, the step of reducing the compensation value of the adjustment speed of the electronic expansion valve opening according to the second adjustment speed when the exhaust temperature is less than or equal to the second preset temperature threshold, until the compensation value of the adjustment speed of the electronic expansion valve opening through the first adjustment method is reduced to zero, includes: when reducing the compensation value of the adjustment speed of the electronic expansion valve opening according to the second adjustment speed, if multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature begins to rise, then the compensation value of the adjustment speed of the electronic expansion valve opening through the first adjustment method is adjusted to zero, until multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature no longer rises.

[0014] Optionally, after adjusting the compensation value of the adjustment speed of the electronic expansion valve opening by the first adjustment method to zero, the method further includes: when multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature no longer increases, then reducing the compensation value of the adjustment speed of the electronic expansion valve opening by a fourth adjustment speed until the adjustment amount of the electronic expansion valve opening by the first adjustment method is reduced to zero; wherein, the fourth adjustment speed is less than the second adjustment speed and the fourth adjustment speed is negative.

[0015] This application also provides a control device for an air conditioner, including:

[0016] An acquisition module is used to acquire the exhaust temperature of the air conditioner; a control module is used to adjust the exhaust temperature of the air conditioner through a first adjustment method and / or a second adjustment method corresponding to the exhaust temperature; wherein, the first adjustment method is to adjust the adjustment speed of the opening of the electronic expansion valve according to the exhaust temperature; the second adjustment method includes at least one of the following: adjusting the electronic expansion valve according to the superheat, and adjusting the operating frequency of the compressor according to the exhaust temperature.

[0017] Optionally, the acquisition module is specifically used to acquire the exhaust temperature of the air conditioner according to a preset acquisition cycle after the compressor of the air conditioner has been running for a preset time.

[0018] Optionally, the control module is specifically configured to adjust the opening of the electronic expansion valve using the second adjustment method when the exhaust temperature is less than or equal to a first preset temperature threshold. The control module is further configured to, when the exhaust temperature is greater than the first preset temperature threshold, compensate for the adjustment speed of the electronic expansion valve opening using the first adjustment method, based on the adjustment of the electronic expansion valve opening using the second adjustment method, until a preset condition is met. The preset condition includes: the exhaust temperature is less than or equal to a second preset temperature threshold, and the compensation value for the adjustment speed of the electronic expansion valve opening using the first adjustment method is reduced to zero; the second preset temperature threshold is less than the first preset temperature threshold.

[0019] Optionally, the control module is specifically configured to, when the exhaust temperature is greater than the first preset temperature threshold, increase the compensation value of the adjustment speed of the electronic expansion valve opening according to a first adjustment speed until the exhaust temperature begins to decrease, and then adjust the compensation value of the adjustment speed of the electronic expansion valve opening to zero; the control module is further configured to, when the exhaust temperature begins to decrease, control the opening of the electronic expansion valve to remain unchanged until the exhaust temperature is less than or equal to the second preset temperature threshold; the control module is further configured to, when the exhaust temperature is less than or equal to the second preset temperature threshold, decrease the compensation value of the adjustment speed of the electronic expansion valve opening according to a second adjustment speed until the adjustment amount of the electronic expansion valve opening through the first adjustment method is reduced to zero; wherein, the first adjustment speed and the second adjustment speed are both adjustment speeds within one sampling cycle of the exhaust temperature; the first adjustment speed is a positive value, and the second adjustment speed is a negative value.

[0020] Optionally, the control module is specifically configured to, when increasing the compensation value of the adjustment speed of the electronic expansion valve opening according to the first adjustment speed, if multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature is rising, control the opening of the electronic expansion valve to adjust to the maximum opening until the exhaust temperature begins to drop, and then adjust the compensation value of the adjustment speed of the electronic expansion valve opening to zero.

[0021] Optionally, the control module is specifically configured to, when increasing the compensation value of the adjustment speed of the electronic expansion valve opening according to the first adjustment speed, if two adjacent exhaust temperature values ​​obtained according to the acquisition cycle are the same, increase the compensation value of the adjustment speed of the electronic expansion valve opening according to the third adjustment speed until the exhaust temperature begins to decrease, and then adjust the compensation value of the adjustment speed of the electronic expansion valve opening to zero; wherein, the third adjustment speed is less than the first adjustment speed and the third adjustment speed is a positive value.

[0022] Optionally, the control module is specifically configured to, when reducing the compensation value of the adjustment speed of the electronic expansion valve opening according to the second adjustment speed, if multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature begins to rise, adjust the compensation value of the adjustment speed of the electronic expansion valve opening of the first adjustment method to zero, until the multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature no longer rises.

[0023] Optionally, the control module is specifically configured to, when multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature no longer increases, reduce the compensation value of the adjustment speed of the electronic expansion valve opening according to the fourth adjustment speed until the adjustment amount of the electronic expansion valve opening through the first adjustment method is reduced to zero; wherein, the fourth adjustment speed is less than the second adjustment speed and the fourth adjustment speed is negative.

[0024] This application also provides an air conditioner, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the control method of any of the above-described air conditioners.

[0025] This application also provides a computer program product, including a computer program / instructions that, when executed by a processor, implement the steps of the control method for an air conditioner as described above.

[0026] This application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the control method for any of the air conditioners described above.

[0027] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the control method for an air conditioner as described above.

[0028] The air conditioner control method, device, and air conditioner provided in this application first acquire the exhaust temperature of the air conditioner; then, based on the exhaust temperature, the opening of the electronic expansion valve is adjusted using a first adjustment method and / or a second adjustment method. The first adjustment method involves adjusting the adjustment speed of the electronic expansion valve opening based on the exhaust temperature; the second adjustment method includes at least one of the following: adjusting the electronic expansion valve based on superheat, and adjusting the compressor operating frequency based on the exhaust temperature. This effectively avoids excessively high exhaust temperatures, thereby ensuring stable operation of the air conditioner. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the air conditioner's operating principle provided in this application;

[0031] Figure 2 This is one of the flowcharts illustrating the control method for the air conditioner provided in this application;

[0032] Figure 3 This is the second flowchart illustrating the control method for the air conditioner provided in this application;

[0033] Figure 4 This is a schematic diagram of the structure of the control device for the air conditioner provided in this application;

[0034] Figure 5 This is a schematic diagram of the structure of the electronic device provided in this application. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions 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.

[0036] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0037] The operating principle of the air conditioner involved in the embodiments of this application is described in detail below:

[0038] like Figure 1 As shown, the compressor compresses the refrigerant and delivers it through pipes to the condenser. The high-temperature, high-pressure gaseous refrigerant releases heat in the condenser, transforming into a medium-temperature, high-pressure liquid refrigerant. Then, the medium-temperature, high-pressure liquid refrigerant is depressurized through a capillary tube (throttling unit) to become a low-temperature, low-pressure liquid refrigerant. This low-temperature, low-pressure liquid refrigerant is then delivered to the evaporator, where it evaporates into a gas, absorbing a large amount of heat during the evaporation process. Finally, the low-temperature, low-pressure gaseous refrigerant in the evaporator is delivered to the compressor to participate in the next cycle. When the air conditioner is cooling, the outdoor unit's heat exchanger acts as the condenser, and the indoor unit's heat exchanger acts as the evaporator; conversely, when the air conditioner is heating, the outdoor unit's heat exchanger acts as the evaporator, and the indoor unit's heat exchanger acts as the condenser.

[0039] Superheat refers to the temperature difference between the temperature of the gas drawn into the compressor and the corresponding saturation temperature at the same pressure. When dry saturated steam is continuously heated at a constant pressure, the steam temperature will rise, thus exceeding the saturation temperature; the temperature exceeding this point is called superheat.

[0040] In related technologies, when the exhaust temperature rises to a certain level, the exhaust temperature can be controlled in a timely manner by limiting the compressor's operating frequency. However, if the exhaust temperature rises too quickly, this method may fail to effectively reduce the exhaust temperature, ultimately causing the air conditioner to report an exhaust fault.

[0041] In view of the technical problems in related technologies that may lead to excessively high exhaust temperature, this application provides a control method for an air conditioner. When the exhaust temperature is too high, the method can compensate for the adjustment speed of the electronic expansion valve opening through a reasonable compensation mechanism, so as to quickly reduce the exhaust temperature. This not only effectively avoids the occurrence of shutdown failure, but also improves the stability of air conditioner operation.

[0042] The control method for an air conditioner provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0043] like Figure 2 As shown in the embodiment of this application, a control method for an air conditioner is provided, which may include the following steps 201 and 202:

[0044] Step 201: Obtain the exhaust temperature of the air conditioner.

[0045] For example, the above-mentioned exhaust temperature is the exhaust temperature of the compressor. The exhaust temperature is affected by the operating frequency of the compressor. The higher the operating frequency of the compressor, the faster the compressor runs, and the better the cooling or heating effect of the air conditioner. At the same time, the exhaust temperature of the compressor is also higher.

[0046] It is understandable that when the ambient temperature is low or the compressor operates at a high frequency, the compressor's exhaust temperature will be at a high level. Especially when the compressor is operating at a high frequency, the exhaust temperature rises very quickly. Therefore, the air conditioner needs to periodically obtain the compressor's exhaust temperature and adjust the operating parameters in a timely manner according to the exhaust temperature to avoid malfunctions caused by excessively high exhaust temperature.

[0047] Specifically, step 201 above may include step 201a:

[0048] Step 201a: After the compressor of the air conditioner has been running for a preset time, the exhaust temperature of the air conditioner is obtained according to the preset collection cycle.

[0049] For example, when the air conditioner is first started, the compressor needs a period of preheating. During this period, there is no need to adjust the exhaust temperature of the air conditioner, and therefore no need to obtain the desired exhaust temperature.

[0050] In one possible implementation, the preset acquisition period can be fixed, for example, acquiring the exhaust temperature every 30 seconds (s); or the preset acquisition period can be variable, for example, acquiring the exhaust temperature according to the first acquisition period when the exhaust temperature is high (exceeding the first preset temperature threshold); and acquiring the exhaust temperature according to the second acquisition period when the exhaust temperature is low (less than or equal to the first preset temperature threshold). The first acquisition period is longer than the second acquisition period.

[0051] Step 202: Adjust the exhaust temperature of the air conditioner using a first adjustment method and / or a second adjustment method corresponding to the exhaust temperature;

[0052] The first adjustment method involves adjusting the opening speed of the electronic expansion valve based on the exhaust temperature. The second adjustment method includes at least one of the following: adjusting the electronic expansion valve based on the superheat, and adjusting the operating frequency of the compressor based on the exhaust temperature.

[0053] It should be noted that the above-mentioned second adjustment method has been implemented in many related technologies, and will not be described in detail in this application embodiment. The air conditioner control method provided in this application uses the second adjustment method to control the exhaust temperature when the exhaust temperature is low; when the exhaust temperature is high, the adjustment speed of the electronic expansion valve opening is compensated by combining the first adjustment method with the second adjustment method to accelerate the decrease of exhaust temperature and avoid the occurrence of failure due to excessive temperature.

[0054] Specifically, step 202 above may include steps 202a and 202b:

[0055] Step 202a: When the exhaust temperature is less than or equal to the first preset temperature threshold, the opening of the electronic expansion valve is adjusted by the second adjustment method.

[0056] Step 202b: When the exhaust temperature is greater than the first preset temperature threshold, based on the adjustment of the opening of the electronic expansion valve by the second adjustment method, the adjustment speed of the opening of the electronic expansion valve is compensated by the first adjustment method until the preset condition is met.

[0057] Wherein, the second preset temperature threshold is less than the first preset temperature threshold; the preset conditions include: the exhaust temperature is less than or equal to the second preset temperature threshold, and the compensation value of the adjustment speed of the electronic expansion valve opening through the first adjustment method is reduced to zero.

[0058] For example, in this embodiment of the application, the adjustment speed of the electronic expansion valve opening is the sum of the adjustment speed of the electronic expansion valve opening through the second adjustment method and the compensation value of the adjustment speed of the electronic expansion valve opening through the first adjustment method.

[0059] For example, when the exhaust temperature is less than or equal to the first preset temperature threshold, the increase in exhaust temperature can be limited by the second adjustment method alone; when the exhaust temperature is greater than the first preset temperature threshold, it indicates that the exhaust temperature is too high, and it is necessary to further reduce the exhaust temperature rapidly by the first adjustment method on the basis of the second adjustment method.

[0060] For example, such as Figure 3As shown, after the compressor has been running for 5 minutes (the compressor preheating stage, i.e., the preset duration mentioned above), the exhaust temperature T is checked every 30 seconds (i.e., the preset detection cycle mentioned above). If T ≤ 94℃ (i.e., the first preset temperature threshold mentioned above), the exhaust temperature T is controlled by adjusting the electronic expansion valve according to the superheat, and / or by adjusting the compressor's operating frequency according to the exhaust temperature T. If T > 94℃, it indicates that the exhaust temperature is too high. In this case, a compensation mechanism can be introduced to compensate for the adjustment speed of the electronic expansion valve (i.e., the first adjustment method mentioned above) to achieve a rapid decrease in exhaust temperature.

[0061] Optionally, in the embodiments of this application, when the exhaust temperature is high, the following control strategy can be used to achieve a rapid decrease in exhaust temperature.

[0062] Specifically, step 202b above may include steps 202b1 to 202b3:

[0063] Step 202b1: When the exhaust temperature is greater than the first preset temperature threshold, increase the compensation value of the adjustment speed of the electronic expansion valve opening according to the first adjustment speed until the exhaust temperature begins to drop, and then adjust the compensation value of the adjustment speed of the electronic expansion valve opening to zero.

[0064] Step 202b2: When the exhaust temperature begins to decrease, the opening of the electronic expansion valve is kept constant until the exhaust temperature is less than or equal to the second preset temperature threshold.

[0065] Step 202b3: When the exhaust temperature is less than or equal to the second preset temperature threshold, reduce the compensation value of the adjustment speed of the electronic expansion valve opening according to the second adjustment speed until the compensation value of the adjustment speed of the electronic expansion valve opening is reduced to zero by the first adjustment method.

[0066] Wherein, the first adjustment speed and the second adjustment speed are both adjustment speeds within one sampling cycle of exhaust temperature; the first adjustment speed is a positive value, and the second adjustment speed is a negative value.

[0067] It should be noted that in related technologies, the adjustment speed of the electronic expansion valve opening is usually fixed, or the opening of the electronic expansion valve is adjusted according to a fixed value relative to the exhaust temperature. However, in this embodiment, the first adjustment method is mainly used to adjust the compensation value of the electronic expansion valve opening adjustment speed to improve the adjustment speed of the electronic expansion valve opening. Furthermore, after the exhaust temperature is effectively controlled, the compensation value of the electronic expansion valve opening adjustment speed can be gradually reduced through a reasonable control strategy to avoid the exhaust temperature becoming too high again.

[0068] Specifically, step 202b1 above may also include the following step 202b11:

[0069] Step 202b11: When the compensation value of the adjustment speed of the electronic expansion valve opening is increased according to the first adjustment speed, if the multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature is rising, the opening of the electronic expansion valve is controlled to be adjusted to the maximum opening until the exhaust temperature begins to drop, and then the compensation value of the adjustment speed of the electronic expansion valve opening is adjusted to zero.

[0070] Specifically, step 202b1 above may also include the following step 202b12:

[0071] Step 202b12: When the compensation value of the adjustment speed of the electronic expansion valve opening is increased according to the first adjustment speed, if two adjacent exhaust temperature values ​​obtained according to the acquisition cycle are the same, the compensation value of the adjustment speed of the electronic expansion valve opening is increased according to the third adjustment speed until the exhaust temperature begins to drop, and then the compensation value of the adjustment speed of the electronic expansion valve opening is adjusted to zero.

[0072] Wherein, the third adjustment speed is less than the first adjustment speed, and the third adjustment speed is a positive value.

[0073] It should be noted that step 202b12 can be performed alone or after step 202b11.

[0074] For example, when the exhaust temperature T > 94℃, the compensation value for the adjustment speed of the electronic expansion valve opening can be adjusted to +20 / 30 seconds, meaning that the adjustment speed of the electronic expansion valve opening increases by 20 within one detection cycle. If the exhaust temperature continues to rise, the opening of the electronic expansion valve can be directly adjusted to its maximum. If the exhaust temperature stops rising but remains unchanged, the compensation value can be appropriately reduced, adjusting the compensation value for the adjustment speed of the electronic expansion valve opening to +5 / 30 seconds. When the exhaust temperature begins to decrease, compensation should be stopped immediately, and the compensation value should be adjusted to 0 / 30 seconds.

[0075] It should be noted that the above detection cycle can be a fixed value or it can be negatively correlated with the exhaust temperature, that is, the higher the exhaust temperature, the shorter the detection cycle.

[0076] Specifically, step 202b3 above may also include the following step 202b31:

[0077] Step 202b31: When the compensation value of the adjustment speed of the electronic expansion valve opening is reduced according to the second adjustment speed, if the multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature starts to rise, the compensation value of the adjustment speed of the electronic expansion valve opening of the first adjustment method is adjusted to zero until the multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature no longer rises.

[0078] For example, after step 202b31, step 202b3 may further include the following step 202b32:

[0079] Step 202b32: If the multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature no longer increases, then reduce the compensation value of the adjustment speed of the electronic expansion valve opening according to the fourth adjustment speed until the adjustment amount of the electronic expansion valve opening through the first adjustment method is reduced to zero.

[0080] Wherein, the fourth adjustment speed is less than the second adjustment speed, and the fourth adjustment speed is a negative value.

[0081] For example, when the exhaust temperature begins to drop and falls to T < 90℃ (i.e., the second preset temperature threshold mentioned above), the compensation value for the adjustment speed of the electronic expansion valve opening can be adjusted to -10 / 30 seconds, meaning that the adjustment speed of the electronic expansion valve opening is reduced by 10 within one detection cycle. If the exhaust temperature starts to rise after compensation, the compensation can be stopped. If the exhaust temperature no longer rises but remains unchanged, the compensation value can be appropriately reduced, adjusting the compensation value for the adjustment speed of the electronic expansion valve opening to -5 / 30 seconds, until the adjustment amount of the electronic expansion valve opening through the first adjustment method is reduced to zero.

[0082] Understandably, the first adjustment method can significantly increase the opening of the electronic expansion valve. However, adjusting the electronic expansion valve using the first method may cause the adjustment method based on superheat to fail (equivalent to step 202b: compensating for the adjustment speed of the electronic expansion valve opening using the first adjustment method based on adjusting the compressor's operating frequency according to the exhaust temperature). Therefore, when the exhaust temperature drops to a reasonable range, to stabilize the opening, frequency, exhaust, and intake parameters of the electronic expansion valve, the adjustment amount of the electronic expansion valve opening using the first adjustment method needs to be reset to zero. Afterward, the exhaust temperature of the air conditioner should be fully adjusted using the second adjustment method.

[0083] For example, if the adjustment amount of the electronic expansion valve opening is 200 when the exhaust temperature T > 94℃, then when the exhaust temperature T < 90℃, the opening of the electronic expansion valve needs to be reduced slowly by 200 in a reasonable way, that is, the compensated opening is completely cleared to zero.

[0084] The air conditioner control method provided in this application adjusts the opening of the electronic expansion valve using a second adjustment method when the exhaust temperature is less than or equal to a first preset temperature threshold. When the exhaust temperature is greater than the first preset temperature threshold, in addition to adjusting the opening of the electronic expansion valve using the second adjustment method, the adjustment speed of the electronic expansion valve opening is compensated using a first adjustment method until the preset conditions are met. The technical solution in this application, based on the existing exhaust temperature adjustment mechanism, effectively limits the exhaust temperature by adding a reasonable compensation mechanism, avoiding excessively high exhaust temperatures and thus ensuring the stable operation of the air conditioner.

[0085] It should be noted that the air conditioner control method provided in this application embodiment can be executed by an air conditioner control device or a control module within that control device for executing the air conditioner control method. This application embodiment uses the air conditioner control device executing the air conditioner control method as an example to illustrate the air conditioner control device provided in this application embodiment.

[0086] It should be noted that, in the embodiments of this application, the control methods of the air conditioner shown in the accompanying drawings are all illustrated by way of example with reference to one of the accompanying drawings in the embodiments of this application. In specific implementation, the control methods of the air conditioner shown in the accompanying drawings of the above methods can also be implemented in conjunction with any other accompanying drawings that can be combined with the above embodiments, which will not be elaborated here.

[0087] The control device for the air conditioner provided in this application is described below, and the control method for the air conditioner described below can be referred to in correspondence with that described above.

[0088] Figure 4 This is a schematic diagram of the structure of the control device for an air conditioner provided in one embodiment of this application, as shown below. Figure 4 As shown, it specifically includes:

[0089] The acquisition module 401 is used to acquire the exhaust temperature of the air conditioner; the control module 402 is used to adjust the exhaust temperature of the air conditioner through a first adjustment method and / or a second adjustment method corresponding to the exhaust temperature; wherein, the first adjustment method is to adjust the adjustment speed of the opening of the electronic expansion valve according to the exhaust temperature; the second adjustment method includes at least one of the following: adjusting the electronic expansion valve according to the superheat, and adjusting the operating frequency of the compressor according to the exhaust temperature.

[0090] Optionally, the acquisition module 401 is specifically used to acquire the exhaust temperature of the air conditioner according to a preset acquisition cycle after the compressor of the air conditioner has been running for a preset time.

[0091] Optionally, the control module 402 is specifically configured to adjust the opening of the electronic expansion valve using the second adjustment method when the exhaust temperature is less than or equal to a first preset temperature threshold. The control module 402 is also specifically configured to, when the exhaust temperature is greater than the first preset temperature threshold, compensate for the adjustment speed of the electronic expansion valve opening using the first adjustment method, based on the adjustment of the electronic expansion valve opening using the second adjustment method, until a preset condition is met. The preset condition includes: the exhaust temperature is less than or equal to a second preset temperature threshold, and the compensation value for the adjustment speed of the electronic expansion valve opening using the first adjustment method is reduced to zero; the second preset temperature threshold is less than the first preset temperature threshold.

[0092] Optionally, the control module 402 is specifically configured to, when the exhaust temperature is greater than the first preset temperature threshold, increase the compensation value of the adjustment speed of the electronic expansion valve opening according to a first adjustment speed until the exhaust temperature begins to decrease, and then adjust the compensation value of the adjustment speed of the electronic expansion valve opening to zero; the control module 402 is further configured to, when the exhaust temperature begins to decrease, keep the opening of the electronic expansion valve unchanged until the exhaust temperature is less than or equal to the second preset temperature threshold; the control module 402 is further configured to, when the exhaust temperature is less than or equal to the second preset temperature threshold, decrease the compensation value of the adjustment speed of the electronic expansion valve opening according to a second adjustment speed until the adjustment amount of the electronic expansion valve opening through the first adjustment method is reduced to zero; wherein, the first adjustment speed and the second adjustment speed are both adjustment speeds within one sampling cycle of the exhaust temperature; the first adjustment speed is a positive value, and the second adjustment speed is a negative value.

[0093] Optionally, the control module 402 is specifically used to adjust the opening of the electronic expansion valve to the maximum opening when the compensation value of the adjustment speed of the electronic expansion valve opening is increased according to the first adjustment speed, and if the multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature is rising, then the compensation value of the adjustment speed of the electronic expansion valve opening is adjusted to zero until the exhaust temperature begins to drop.

[0094] Optionally, the control module 402 is specifically configured to, when increasing the compensation value of the adjustment speed of the electronic expansion valve opening according to the first adjustment speed, if two adjacent exhaust temperature values ​​obtained according to the acquisition cycle are the same, increase the compensation value of the adjustment speed of the electronic expansion valve opening according to the third adjustment speed until the exhaust temperature begins to decrease, and then adjust the compensation value of the adjustment speed of the electronic expansion valve opening to zero; wherein, the third adjustment speed is less than the first adjustment speed and the third adjustment speed is a positive value.

[0095] Optionally, the control module 402 is specifically configured to, when reducing the compensation value of the adjustment speed of the electronic expansion valve opening according to the second adjustment speed, if multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature begins to rise, adjust the compensation value of the adjustment speed of the electronic expansion valve opening of the first adjustment method to zero, until the multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature no longer rises.

[0096] Optionally, the control module 402 is specifically used to reduce the compensation value of the adjustment speed of the electronic expansion valve opening according to the fourth adjustment speed when the multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature no longer increases, until the adjustment amount of the electronic expansion valve opening through the first adjustment method is reduced to zero; wherein, the fourth adjustment speed is less than the second adjustment speed and the fourth adjustment speed is negative.

[0097] The control device for the air conditioner provided in this application adjusts the opening of the electronic expansion valve through a second adjustment method when the exhaust temperature is less than or equal to a first preset temperature threshold. When the exhaust temperature is greater than the first preset temperature threshold, in addition to adjusting the opening of the electronic expansion valve through the second adjustment method, the adjustment speed of the electronic expansion valve opening is compensated through a first adjustment method until the preset conditions are met. The technical solution in this application, based on the existing exhaust temperature adjustment mechanism, effectively limits the exhaust temperature by adding a reasonable compensation mechanism, avoiding excessively high exhaust temperatures and thus ensuring the stable operation of the air conditioner.

[0098] Figure 5 This example illustrates a schematic diagram of the physical structure of an electronic device, which can be the aforementioned air conditioner, such as... Figure 5As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530, and a communication bus 540, wherein the processor 510, the communication interface 520, and the memory 530 communicate with each other through the communication bus 540. The processor 510 can call logic instructions in the memory 530 to execute a control method for the air conditioner, the method including: acquiring the exhaust temperature of the air conditioner; adjusting the exhaust temperature of the air conditioner through a first adjustment method and / or a second adjustment method corresponding to the exhaust temperature; wherein the first adjustment method is to adjust the adjustment speed of the opening of the electronic expansion valve according to the exhaust temperature; the second adjustment method includes at least one of the following: adjusting the electronic expansion valve according to the superheat, and adjusting the operating frequency of the compressor according to the exhaust temperature.

[0099] Furthermore, the logical instructions in the aforementioned memory 530 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several 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 methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0100] On the other hand, this application also provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by a computer, the computer is able to execute the air conditioner control method provided by the above methods. The method includes: obtaining the exhaust temperature of the air conditioner; adjusting the exhaust temperature of the air conditioner by a first adjustment method and / or a second adjustment method corresponding to the exhaust temperature; wherein, the first adjustment method is: adjusting the adjustment speed of the opening of the electronic expansion valve according to the exhaust temperature; the second adjustment method includes at least one of the following: adjusting the electronic expansion valve according to the superheat, and adjusting the operating frequency of the compressor according to the exhaust temperature.

[0101] In another aspect, this application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the control methods for the air conditioner provided above. The method includes: acquiring the exhaust temperature of the air conditioner; adjusting the exhaust temperature of the air conditioner using a first adjustment method and / or a second adjustment method corresponding to the exhaust temperature; wherein the first adjustment method involves adjusting the adjustment speed of the opening of an electronic expansion valve based on the exhaust temperature; and the second adjustment method includes at least one of the following: adjusting the electronic expansion valve based on superheat, and adjusting the operating frequency of the compressor based on the exhaust temperature.

[0102] 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. Those skilled in the art can understand and implement this without any creative effort.

[0103] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, 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.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A control method for an air conditioner, characterized in that, include: Obtain the exhaust temperature of the air conditioner; The exhaust temperature of the air conditioner is adjusted by a first adjustment method and / or a second adjustment method corresponding to the exhaust temperature. The first adjustment method involves adjusting the opening speed of the electronic expansion valve based on the exhaust temperature. The second adjustment method includes at least one of the following: adjusting the electronic expansion valve based on the superheat, and adjusting the operating frequency of the compressor based on the exhaust temperature. The adjustment of the air conditioner's exhaust temperature using a first adjustment method and / or a second adjustment method corresponding to the exhaust temperature includes: When the exhaust temperature is less than or equal to the first preset temperature threshold, the opening of the electronic expansion valve is adjusted by the second adjustment method; When the exhaust temperature is greater than the first preset temperature threshold, the opening of the electronic expansion valve is adjusted by the second adjustment method, and the adjustment speed of the electronic expansion valve opening is compensated by the first adjustment method until the preset condition is met. The preset conditions include: the exhaust temperature is less than or equal to a second preset temperature threshold, and the compensation value of the adjustment speed of the electronic expansion valve opening through the first adjustment method is reduced to zero; the second preset temperature threshold is less than the first preset temperature threshold.

2. The method according to claim 1, characterized in that, The process of obtaining the exhaust temperature of the air conditioner includes: After the air conditioner's compressor has been running for a preset period of time, the air conditioner's exhaust temperature is obtained according to a preset collection cycle.

3. The method according to claim 1, characterized in that, When the exhaust temperature is greater than the first preset temperature threshold, based on the adjustment of the electronic expansion valve opening using the second adjustment method, the adjustment speed of the electronic expansion valve opening is compensated using the first adjustment method until the preset condition is met, including: When the exhaust temperature is greater than the first preset temperature threshold, the compensation value of the adjustment speed of the electronic expansion valve opening is increased according to the first adjustment speed until the exhaust temperature begins to drop, and then the compensation value of the adjustment speed of the electronic expansion valve opening is adjusted to zero. When the exhaust temperature begins to drop, the opening of the electronic expansion valve is kept constant until the exhaust temperature is less than or equal to the second preset temperature threshold. When the exhaust temperature is less than or equal to the second preset temperature threshold, the compensation value of the adjustment speed of the electronic expansion valve opening is reduced according to the second adjustment speed until the adjustment amount of the electronic expansion valve opening is reduced to zero by the first adjustment method. Wherein, the first adjustment speed and the second adjustment speed are both adjustment speeds within one sampling cycle of exhaust temperature; the first adjustment speed is a positive value, and the second adjustment speed is a negative value.

4. The method according to claim 3, characterized in that, When the exhaust temperature is greater than the first preset temperature threshold, the compensation value for increasing the adjustment speed of the electronic expansion valve opening is increased by a first adjustment speed until the exhaust temperature begins to decrease, and then the compensation value for adjusting the electronic expansion valve opening is adjusted to zero, including: When the compensation value of the adjustment speed of the electronic expansion valve opening is increased according to the first adjustment speed, if the multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature is rising, the opening of the electronic expansion valve is controlled to be adjusted to the maximum opening until the exhaust temperature begins to drop, and then the compensation value of the adjustment speed of the electronic expansion valve opening is adjusted to zero.

5. The method according to claim 3 or 4, characterized in that, When the exhaust temperature is greater than the first preset temperature threshold, the compensation value for increasing the adjustment speed of the electronic expansion valve opening is increased by a first adjustment speed until the exhaust temperature begins to decrease, and then the compensation value for adjusting the electronic expansion valve opening is adjusted to zero, including: If two adjacent exhaust temperature values ​​obtained according to the acquisition cycle are the same when the compensation value of the adjustment speed of the electronic expansion valve opening is increased according to the first adjustment speed, the compensation value of the adjustment speed of the electronic expansion valve opening is increased according to the third adjustment speed until the exhaust temperature begins to drop, and then the compensation value of the adjustment speed of the electronic expansion valve opening is adjusted to zero. Wherein, the third adjustment speed is less than the first adjustment speed, and the third adjustment speed is a positive value.

6. The method according to claim 3, characterized in that, When the exhaust temperature is less than or equal to the second preset temperature threshold, the compensation value for reducing the adjustment speed of the electronic expansion valve opening according to the second adjustment speed, until the adjustment amount of the electronic expansion valve opening is reduced to zero by the first adjustment method, includes: When the compensation value for the adjustment speed of the electronic expansion valve opening is reduced according to the second adjustment speed, if the multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature has started to rise, the compensation value for the adjustment speed of the electronic expansion valve opening of the first adjustment method is adjusted to zero until the multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature no longer rises.

7. The method according to claim 6, characterized in that, After adjusting the compensation value for the adjustment speed of the electronic expansion valve opening by the first adjustment method to zero, the method further includes: If multiple exhaust temperature values ​​obtained according to the acquisition cycle indicate that the exhaust temperature no longer increases, then the compensation value of the adjustment speed of the electronic expansion valve opening is reduced according to the fourth adjustment speed until the adjustment amount of the electronic expansion valve opening through the first adjustment method is reduced to zero. Wherein, the fourth adjustment speed is less than the second adjustment speed, and the fourth adjustment speed is a negative value.

8. A control device for an air conditioner, characterized in that, The device includes: The acquisition module is used to acquire the exhaust temperature of the air conditioner; The control module is used to adjust the exhaust temperature of the air conditioner through a first adjustment method and / or a second adjustment method corresponding to the exhaust temperature; The first adjustment method involves adjusting the opening speed of the electronic expansion valve based on the exhaust temperature. The second adjustment method includes at least one of the following: adjusting the electronic expansion valve based on the superheat, and adjusting the operating frequency of the compressor based on the exhaust temperature. The control module is specifically used to adjust the opening of the electronic expansion valve by means of the second adjustment method when the exhaust temperature is less than or equal to the first preset temperature threshold. The control module is further configured to, when the exhaust temperature is greater than the first preset temperature threshold, compensate for the adjustment speed of the electronic expansion valve opening through the first adjustment method, based on the adjustment of the electronic expansion valve opening through the second adjustment method, until the preset conditions are met. The preset conditions include: the exhaust temperature is less than or equal to a second preset temperature threshold, and the compensation value of the adjustment speed of the electronic expansion valve opening through the first adjustment method is reduced to zero; the second preset temperature threshold is less than the first preset temperature threshold.

9. An air conditioner, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the control method for the air conditioner as described in any one of claims 1 to 7.

Images