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

Abstract

The application provides an air conditioner, an air conditioner air outlet control method and a storage medium. The air conditioner comprises a fresh air pipeline, the fresh air pipeline is provided with a first return air outlet communicating with indoor air flow and a mixed air outlet communicating with an air outlet of an indoor unit in the air conditioner, and a return air assembly is arranged in the fresh air pipeline. If the working mode of the air conditioner is a cooling mode and the fresh air state of the air conditioner is fresh air operation, the fresh air temperature and the indoor temperature corresponding to the air conditioner are obtained; if the temperature difference between the fresh air temperature and the indoor temperature is greater than a first preset temperature difference threshold, the return air control parameter of the return air assembly is determined according to the fresh air temperature and the indoor temperature; the return air assembly is controlled to operate according to the return air control parameter, so as to control the indoor air flow entering the fresh air pipeline through the first return air outlet, mix with fresh air, and then output from the mixed air outlet to the air outlet. When the temperature difference between the indoor temperature and the fresh air temperature is large, the temperature difference fluctuation of the air outlet is reduced, and the air outlet temperature stability is improved.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, specifically to an air conditioner, an air conditioner air outlet control method, and a storage medium. Background Technology

[0002] To meet user needs, fresh air conditioners are increasingly being used. These air conditioners typically introduce fresh air from outdoors into the room through fresh air ducts to improve indoor environmental quality. However, the temperature at the air outlet of the indoor unit is easily affected by the fresh air introduced from outdoors, causing condensation and resulting in unstable airflow from the air conditioner. Summary of the Invention

[0003] This application provides an air conditioner, an air conditioner air outlet control method, and a storage medium, aiming to solve the problem that the air conditioner air outlet is easily affected by the fresh air in the air conditioner, resulting in unstable air outlet, and to improve the stability of the air conditioner air outlet.

[0004] In a first aspect, this application provides an air conditioning outlet control method, applied to an air conditioner, the air conditioner including a fresh air duct, the fresh air duct being provided with a first return air inlet communicating with indoor airflow, and a mixing air inlet communicating with the air outlet of the indoor unit of the air conditioner, a return air assembly being provided in the fresh air duct corresponding to the first return air inlet, the method including:

[0005] Get the air conditioner's operating mode;

[0006] If the air conditioner is in cooling mode and the air conditioner is in fresh air operation mode, then obtain the corresponding fresh air temperature and indoor temperature of the air conditioner.

[0007] If the temperature difference between the fresh air temperature and the indoor temperature is greater than the first preset temperature difference threshold, then the return air control parameters of the return air component are determined based on the fresh air temperature and the indoor temperature.

[0008] The return air component is controlled to operate according to the return air control parameters. The first return air inlet is controlled to allow indoor airflow to enter the fresh air duct, where it mixes with the fresh air in the fresh air duct and is then output to the room from the mixing air inlet.

[0009] In one embodiment of this application, the return air assembly includes a return air damper and a return air fan; the return air control parameters include damper opening, fan speed, and fan direction.

[0010] If the temperature difference between the fresh air temperature and the indoor temperature is greater than a first preset temperature difference threshold, the return air control parameters of the return air assembly are determined based on the fresh air temperature and the indoor temperature, including:

[0011] If the temperature difference between the fresh air temperature and the indoor temperature is greater than the first preset temperature difference threshold, then the fan direction of the return air fan is determined to be the preset first direction, and the damper opening of the return air damper is determined to be the preset target opening, wherein the first direction is used to control the air intake of the first return air inlet, and the target opening is used to control the return air volume of the first return air inlet.

[0012] Query the preset mapping table corresponding to the target opening degree to obtain the fan speed corresponding to the temperature difference value, wherein the preset mapping table includes at least one mapping relationship group between speed and temperature difference.

[0013] In one embodiment of this application, after controlling the operation of the return air component according to the return air control parameters, the process includes:

[0014] The new indoor temperature and the mixed air temperature at the mixing vent are collected at preset time intervals.

[0015] Calculate the temperature difference between the new indoor temperature and the mixing temperature of the mixing vent, and generate a temperature difference change curve based on the temperature difference value;

[0016] Predict the target temperature difference value at the target time point based on the temperature difference change curve, and then use the target temperature difference value;

[0017] If the target temperature difference value is used to adjust the fan speed of the return air fan in the return air assembly.

[0018] In one embodiment of this application, the fresh air duct of the air conditioner includes a fresh air section, the free end of which is provided with a fresh air inlet that connects to the outdoor airflow, and a fresh air fan is provided inside the fresh air section;

[0019] After obtaining the fresh air temperature and indoor temperature corresponding to the air conditioner, the method further includes:

[0020] If the temperature difference between the fresh air temperature and the indoor temperature is less than or equal to the first preset temperature difference threshold, then the opening of the return air damper in the return air assembly is adjusted to zero, and the fan speed of the return air fan in the return air assembly is adjusted to zero.

[0021] Obtain the relative ambient humidity corresponding to the air conditioner;

[0022] If the relative ambient humidity is greater than a preset relative humidity threshold, and the temperature difference between the fresh air temperature and the indoor temperature is greater than a second preset temperature difference threshold, then the speed of the fresh air fan is reduced.

[0023] In one embodiment of this application, the first return air vent is located on one side of the second return air vent of the indoor unit;

[0024] After obtaining the air conditioner's operating mode, the method further includes:

[0025] If the air conditioner is in heating mode, the air outlet is closed, and the return air fan in the return air assembly is controlled to run according to the preset second direction. The second direction is used to control the air outlet of the first return air outlet, so that the air circulation is formed between the second return air outlet, the mixing air outlet and the first return air outlet.

[0026] Obtain the target pipe temperature of the indoor heat exchanger in the air conditioner;

[0027] When the target pipe temperature is detected to be greater than the preset first pipe temperature threshold, the air outlet is controlled to open and the return air fan is controlled to stop.

[0028] In one embodiment of this application, after controlling the air outlet to open and the return air fan to stop when the target pipe temperature is detected to be greater than a preset first pipe temperature threshold, the method further includes:

[0029] Obtain the new target pipe temperature of the indoor heat exchanger;

[0030] When a new target pipe temperature is detected to be greater than a preset second pipe temperature threshold, the return air damper in the return air assembly is controlled to close, wherein the second pipe temperature threshold is greater than the first pipe temperature threshold.

[0031] Secondly, this application provides an air conditioner, comprising:

[0032] The indoor unit includes a second return air vent and an air outlet;

[0033] The fresh air duct includes a first return air inlet located on one side of the second return air inlet, a fresh air inlet, and a mixing air inlet connected to the air outlet. A return air assembly is provided inside the fresh air duct corresponding to the first return air inlet.

[0034] One or more processors;

[0035] Memory; and

[0036] One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the steps in any of the air conditioning outlet control methods.

[0037] In one embodiment of this application, the return air assembly includes a return air damper; and / or a return air fan.

[0038] In one embodiment of this application, a fresh air fan and a fresh air damper are provided in the fresh air duct corresponding to the fresh air inlet; and / or; a mixing damper is provided in the fresh air duct corresponding to the mixing air outlet; and / or; the fresh air duct further includes a fresh air outlet located indoors.

[0039] Thirdly, this application provides a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to execute the steps in the air conditioning outlet control method.

[0040] This application provides an air conditioner, an air conditioner air outlet control method, and a storage medium. The air conditioner includes a fresh air duct, which has a first return air inlet communicating with indoor airflow and a mixing air inlet communicating with the air outlet of the indoor unit of the air conditioner. A return air assembly is provided in the fresh air duct corresponding to the first return air inlet. The system obtains the air conditioner's operating mode; if the air conditioner's operating mode is cooling mode and the air conditioner's fresh air status is fresh air operation, it obtains the corresponding fresh air temperature and indoor temperature; if the temperature difference between the fresh air temperature and the indoor temperature is greater than a first preset temperature difference threshold, it determines the return air control parameters of the return air assembly based on the fresh air temperature and the indoor temperature; it controls the operation of the return air assembly according to the return air control parameters, controlling the indoor airflow to enter the fresh air duct through the first return air inlet, mixing with the fresh air in the fresh air duct, and then outputting it to the room through the mixing air inlet. This application sets up a fresh air duct with a first return air inlet, and adjusts the return air component inside the fresh air duct in conjunction with the air conditioner's operating mode and fresh air status. In cooling mode, the indoor temperature and fresh air temperature are detected, and the parameters of the return air component are controlled according to the temperature difference between the indoor temperature and the fresh air temperature, thereby controlling the return air volume of the first return air inlet. Specifically, when the temperature difference between the indoor temperature and the fresh air temperature is large, the indoor return air introduced into the first return air inlet mixes with the fresh air in the fresh air duct, and the mixed air is output from the mixing air inlet to the air outlet, reducing the temperature difference between the indoor temperature and the fresh air temperature, reducing the temperature fluctuation at the air outlet, avoiding condensation at the air outlet, and improving the stability of the air outlet temperature. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of an air conditioning structure provided in an embodiment of this application;

[0043] Figure 2This is a schematic flowchart of an embodiment of the air conditioning air outlet control method provided in this application.

[0044] Figure 3 A schematic flowchart illustrating the implementation scheme for determining return air control parameters in the air conditioning outlet control method provided in this application embodiment;

[0045] Figure 4 A schematic flowchart illustrating an embodiment of another air conditioning outlet control method provided in this application.

[0046] Figure 5 A schematic flowchart illustrating an embodiment of another air conditioning outlet control method provided in this application.

[0047] Figure 6 A schematic flowchart illustrating an embodiment of another air conditioning outlet control method provided in this application.

[0048] Figure 7 This is a schematic diagram of an embodiment of the air conditioning outlet control device provided in this application.

[0049] Figure 8 This is a schematic diagram of another embodiment of the air conditioner provided in this application.

[0050] In the picture:

[0051] 1. Indoor unit; 10. Second return air outlet; 11. Air outlet; 2. Fresh air duct; 20. Fresh air inlet; 200. Fresh air fan; 201. Fresh air damper; 21. First return air outlet; 22. Mixing air outlet; 220. Mixing air damper; 23. Return air assembly; 230. Return air damper; 231. Return air fan. Detailed Implementation

[0052] 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 the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0054] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0055] To overcome the technical problems of temperature fluctuations at the air outlet 11 of the indoor unit 1 due to the influence of outdoor fresh air, low fresh air volume, and condensation caused by excessively low fresh air temperature, this solution provides a fresh air conditioner with dual fresh air outlets and its control method. In this application, a fresh air outlet (mixing air outlet 22) is set at both the return air inlet and inside the air duct of the indoor unit 1. The air outlet temperature can be controlled according to the temperature of the introduced fresh air, reducing temperature fluctuations at the air outlet 11 caused by the introduction of fresh air. During cooling mode operation, anti-condensation control is implemented by mixing fresh air, return air, and regular air conditioning outlet air, thereby controlling potential condensation at the air outlet 11 and preventing condensation due to excessively low fresh air or outlet air temperature. During heating mode startup, anti-cold air operation control is implemented to ensure airflow near the evaporator during heating operation. This not only increases the speed of hot air output during heating but also avoids the risk of pressure overshoot due to anti-cold air.

[0056] For details, see Figure 1 , Figure 1 This is a schematic diagram of an air conditioner structure provided in an embodiment of this application. The air conditioner specifically includes:

[0057] Indoor unit 1, the indoor unit 1 includes a second return air vent 10 and an air outlet 11;

[0058] The fresh air duct 2 includes a fresh air inlet 20, a first return air outlet 21 located on one side of the second return air outlet 10, and a mixing air outlet 22 that communicates with the air outlet 11. A return air assembly 23 is provided in the fresh air duct 2 corresponding to the first return air outlet 21.

[0059] The indoor unit 1, i.e., the air conditioner indoor unit 1 installed indoors, the second return air vent 10 and the air outlet 11 for providing return air (indoor supply) to the indoor unit 1 for heat exchange and then air is discharged into the room to form an indoor air circulation.

[0060] The fresh air duct 2 is used to provide a channel for fresh air to enter the room and for return air to mix with fresh air. It can be understood that the fresh air duct 2 has a fresh air section corresponding to the fresh air inlet 20, a return air section corresponding to the first return air outlet 21, and a mixing air section corresponding to the mixing air outlet 22.

[0061] Understandably, in cooling mode, the indoor air output from the first return air vent 21 and the fresh air input from the fresh air inlet 20 are mixed together in the mixing section and then output from the mixing air vent 22, and further output to the room through the air outlet 11.

[0062] It is understood that the fresh air inlet 20 is generally located outdoors for inputting outdoor air, and the first return air inlet 21 is located indoors and on one side of the second return air inlet 10, for realizing air circulation between the second return air inlet 10 and the first return air inlet 21 in heating mode; so as to enhance the tube temperature rise rate of the indoor unit 1 heat exchanger in the initial heating stage of the air conditioner and enhance the working performance of the air conditioner.

[0063] Specifically, in one embodiment of this application, the return air assembly 23 includes a return air damper 230, which controls the first return air inlet 21 to switch on and off.

[0064] Specifically, in one embodiment of this application, the return air assembly 23 includes a return air fan 231, which controls the return air volume of the first return air inlet 21. It can be understood that when the return air fan 231 is stopped, the return air volume of the first return air inlet 21 is very small and can be ignored in some application scenarios.

[0065] Specifically, in one embodiment of this application, the return air assembly 23 includes a return air fan 231 and a return air damper 230. The return air damper 230 controls the return air switch of the first return air inlet 21, and the return air fan 231 controls the return air volume of the first return air inlet 21, thereby ensuring the return air control accuracy of the first return air inlet 21.

[0066] Furthermore, in some embodiments of this application, the fresh air duct 2 of the air conditioner is provided with a fresh air fan 200 and a fresh air damper 201 corresponding to the fresh air inlet 20, so as to precisely adjust the air volume of the fresh air inlet 20.

[0067] Furthermore, in some embodiments of this application, a mixing damper 220 is provided in the fresh air duct 2 corresponding to the mixing port 22 to precisely adjust the air volume of the mixing port 22.

[0068] Furthermore, in some embodiments of this application, the fresh air duct 2 of the air conditioner is provided with a fresh air fan 200 and a fresh air damper 201 corresponding to the fresh air inlet 20, and the fresh air duct 2 is provided with a mixing damper 220 corresponding to the mixing inlet 22, so as to precisely adjust the air volume of the mixing inlet 22 and the air volume of the fresh air inlet 20.

[0069] Furthermore, in some embodiments of this application, the fresh air duct 2 also includes a fresh air outlet located indoors. The fresh air can be controlled to exit from different fresh air outlets 11 according to the temperature of the introduced fresh air, which can reduce temperature fluctuations at the air conditioning outlet 11 caused by the introduction of fresh air and improve user comfort.

[0070] It is understood that in some other embodiments of this application, the fresh air inlet 20 may be equipped with a filter, air purification device, etc., to improve the quality of fresh air. This application does not impose specific limitations on this.

[0071] Based on the above air conditioning implementation plan, an embodiment of the air conditioning air outlet control method is proposed.

[0072] like Figure 2 The diagram shown is a flowchart of an embodiment of the air conditioning air outlet control method in this application. The air conditioning air outlet control method includes steps S201-S204:

[0073] S201, Obtain the air conditioner operating mode.

[0074] The operating modes of an air conditioner include cooling mode, heating mode, and cleaning mode.

[0075] Specifically, the operating mode of the air conditioner can be determined by obtaining the operating parameters of the air conditioner.

[0076] S202. If the air conditioner is in cooling mode and the air conditioner is in fresh air operation mode, then obtain the corresponding fresh air temperature and indoor temperature of the air conditioner.

[0077] The fresh air operation means that the fresh air inlet in the fresh air duct is connected to the air mixing port. Fresh air is input from the fresh air inlet, flows through the fresh air duct and is output from the air mixing port. After being further mixed with the indoor circulating air after heat exchange in the indoor unit, it flows into the room from the air outlet of the indoor unit.

[0078] It is understood that this application does not specifically limit the method for determining the fresh air status of the air conditioner; for example:

[0079] In one embodiment of this application, by accessing the operating parameters of the air conditioner, if the operating parameters include fresh air operating parameters, the fresh air state of the air conditioner is determined to be fresh air operation; if the operating parameters do not include fresh air operating parameters, the fresh air state of the air conditioner is a non-fresh air operation state.

[0080] In one embodiment of this application, by detecting the airflow velocity at the fresh air inlet, if the airflow velocity is greater than a preset velocity threshold, the fresh air state of the air conditioner is determined to be fresh air operation; if the airflow velocity is less than or equal to the preset velocity threshold, the fresh air state of the air conditioner is a non-fresh air operation state.

[0081] The fresh air temperature, which is the temperature corresponding to the fresh air inlet, can be understood to be obtained by detecting the fresh air inlet temperature or by detecting the outer ring temperature corresponding to the location of the fresh air inlet.

[0082] The indoor temperature refers to the indoor temperature corresponding to the installation environment of the indoor unit.

[0083] It is understood that the airflow velocity can be detected by an airflow detection sensor, or the fresh air temperature and indoor temperature can be obtained by a temperature detection device.

[0084] S203. If the temperature difference between the fresh air temperature and the indoor temperature is greater than the first preset temperature difference threshold, then the return air control parameters of the return air component are determined based on the fresh air temperature and the indoor temperature.

[0085] The return air control parameters are at least one of damper opening, fan speed, and fan direction.

[0086] It is understandable that if the temperature difference between the fresh air temperature and the indoor temperature is greater than the first preset temperature difference threshold, it indicates a large temperature difference between indoors and outdoors. Introducing fresh air may cause large temperature fluctuations at the air conditioner's outlet, leading to condensation, etc. Therefore, the return air control parameters of the return air assembly are further determined based on the fresh air temperature and the indoor temperature to control the introduction of fresh air through the first return air inlet. The specific implementation method for determining the return air control parameters based on the temperature difference between the fresh air temperature and the indoor temperature is not specifically limited in this application; an example is provided:

[0087] In one embodiment of this application, the temperature difference between the fresh air temperature and the indoor temperature is calculated, a preset mapping table corresponding to the temperature difference and the return air control parameters is looked up, and the return air control parameters corresponding to the temperature difference are obtained.

[0088] In one embodiment of this application, by calculating the temperature difference between the fresh air temperature and the indoor temperature, a preset return air control parameter corresponding to the magnitude relationship between the temperature difference and a preset temperature difference is determined.

[0089] S204. Control the operation of the return air component according to the return air control parameters, control the airflow from the first return air inlet to the fresh air duct, mix with the fresh air in the fresh air duct, and then output the air from the mixing inlet to the room.

[0090] Specifically, after determining the return air control parameters, the air conditioner adjusts the return air parameters of the return air assembly according to the return air control parameters. For example, the return air control parameters include damper opening, fan speed, and fan direction. Then, the damper opening of the return air damper in the return air assembly, as well as the fan speed and fan direction of the return air fan, are adjusted.

[0091] It is understandable that when the airflow at the first return air inlet is connected, the first return air inlet enters the fresh air duct of the indoor return air duct; if the airflow at the first return air inlet is closed, the first return air inlet does not enter the fresh air duct of the indoor return air duct.

[0092] Furthermore, based on the above implementation plan, see [link to relevant documentation]. Figure 3 , Figure 3 This application provides a schematic flowchart illustrating the implementation scheme for determining return air control parameters in the air conditioning outlet control method, including steps S301-S302:

[0093] S301. If the temperature difference between the fresh air temperature and the indoor temperature is greater than the first preset temperature difference threshold, then the fan direction of the return air fan is determined to be the preset first direction, and the damper opening of the return air damper is determined to be the preset target opening.

[0094] The first direction of rotation is used to control the air intake of the second return air vent. It can be understood that the air conditioning fan can include forward rotation and reverse rotation. When forward rotation can control the air intake of the second return air vent, the first direction of rotation is forward rotation. When reverse rotation can control the air intake of the second return air vent, the first direction of rotation is reverse rotation.

[0095] The target opening degree can be fully open, half open, etc., and can be preset according to actual needs.

[0096] It is understood that if the temperature difference between the fresh air temperature and the indoor temperature is greater than a first preset temperature difference threshold, the temperature difference between the fresh air temperature and the indoor temperature will be large, increasing the probability of condensation at the air outlet. In this case, by determining the fan direction of the return air fan to a preset first direction and determining the opening degree of the return air damper to a preset target opening degree, the parameter adjustment of the return air control parameters for the return air assembly specifically includes controlling the opening degree of the return air damper in the return air assembly to the target opening degree and adjusting the return air fan direction of the return air assembly to the first direction. It is understood that the return air damper can be an electrically controlled damper, and the opening degree of the return air damper can be adjusted by adjusting the electrical control parameters corresponding to the opening degree.

[0097] S302. Query the preset mapping table corresponding to the target opening degree to obtain the fan speed corresponding to the temperature difference value.

[0098] The preset mapping table includes at least one mapping relationship group for rotation speed and temperature difference.

[0099] It is understandable that, since the opening degree of the return air damper and the fan speed both determine the return air flow rate, the accuracy of the return air volume control at the first return air inlet can be improved by setting different target opening degrees corresponding to different mapping tables.

[0100] Specifically, after determining the target opening degree, the air conditioner obtains a preset mapping table corresponding to the target opening degree, looks up the preset mapping table, and obtains the fan speed corresponding to the temperature difference value. The return air fan is then controlled to operate according to the fan speed.

[0101] Furthermore, based on the above implementation plan, see [link to relevant documentation]. Figure 4 , Figure 4 A schematic flowchart of another air conditioning outlet control method provided in this application embodiment, including steps S401-S407:

[0102] S401, Obtain the air conditioner operating mode.

[0103] S402. If the air conditioner's operating mode is cooling mode and the air conditioner's fresh air status is fresh air operation, then obtain the corresponding fresh air temperature and indoor temperature of the air conditioner.

[0104] S403. If the temperature difference between the fresh air temperature and the indoor temperature is greater than the first preset temperature difference threshold, then the return air control parameters of the return air component are determined based on the fresh air temperature and the indoor temperature.

[0105] S404. Control the operation of the return air component according to the return air control parameters, control the indoor airflow to be introduced into the fresh air duct through the first return air inlet, mix with the fresh air in the fresh air duct, and then output to the room from the mixing air inlet.

[0106] Specifically, the specific implementation schemes for steps S401-S404 are shown in any of the above implementation schemes.

[0107] S405. Collect new indoor temperature and mixed air temperature at the mixing vent according to a preset time interval.

[0108] The mixed air temperature refers to the mixed air temperature in the fresh air duct corresponding to the mixed air inlet, that is, the mixed air temperature after the indoor return air and the outdoor fresh air are mixed together at the first return air inlet.

[0109] Specifically, when the opening degree of the return air damper is the target opening degree, that is, the first return air inlet introduces indoor return air into the distribution duct, and by mixing indoor air and fresh air, the temperature of the fresh air is reduced, thereby reducing the temperature difference and preventing condensation at the air outlet. New indoor temperature and mixed air temperature are collected at preset time intervals, that is, an indoor temperature and a mixed air temperature are collected every preset time interval.

[0110] It is understood that this application does not specifically limit the preset time interval. For example, the preset time interval is 3 minutes, 1 minute, etc.

[0111] S406. Calculate the temperature difference between the new indoor temperature and the mixing temperature of the mixing vent, and generate a temperature difference change curve based on the temperature difference value.

[0112] Specifically, after collecting the new indoor temperature and the mixed air temperature at the mixing vent for a preset time, the temperature difference between the new indoor temperature and the mixed air temperature at the mixing vent is calculated. Based on the temperature difference and the corresponding collection time, a temperature difference change curve is generated by fitting.

[0113] S407. Adjust the fan speed of the return air fan according to the temperature difference change curve.

[0114] Furthermore, based on the temperature difference change curve, the target temperature difference value corresponding to the future target time point is predicted. The speed of the return air fan is controlled according to the target temperature difference value. For example, if the target temperature difference value is greater than a preset target temperature difference threshold, the speed of the return air fan is reduced; otherwise, the speed of the return air fan remains unchanged. This avoids low air outlet stability caused by lag in return air fan adjustment, and enables flexible adjustment of the air volume at the first return air outlet, enhancing the flexibility and accuracy of outlet air temperature adjustment.

[0115] Furthermore, based on the above implementation scheme, this application also provides an implementation scheme for determining return air control parameters, wherein a fresh air fan is installed in the fresh air duct of the air conditioner corresponding to the fresh air inlet. For details, see [link to implementation scheme]. Figure 5 , Figure 5 A schematic flowchart of another air conditioning outlet control method provided in this application embodiment, including steps S501-S505:

[0116] S501, Obtain the air conditioner operating mode;

[0117] S502. If the air conditioner's operating mode is cooling mode and the air conditioner's fresh air status is fresh air operation, then obtain the corresponding fresh air temperature and indoor temperature of the air conditioner.

[0118] Specifically, the specific implementation schemes for steps S501-S502 are shown in any of the above implementation schemes.

[0119] S503. If the temperature difference between the fresh air temperature and the indoor temperature is less than or equal to the first preset temperature difference threshold, then adjust the opening of the return air damper in the return air assembly to zero, and adjust the fan speed of the return air fan in the return air assembly to zero.

[0120] Understandably, if the temperature difference between the fresh air temperature and the indoor temperature is less than the first preset temperature difference threshold, it indicates that the temperature difference between the fresh air temperature and the indoor temperature is not large, and the probability of condensation at the air outlet of the indoor unit of the air conditioner is low. In this case, the damper opening is set to zero, and the fan speed is set to zero. That is, the first return air inlet is controlled to prevent indoor return air from entering.

[0121] Specifically, the opening of the return air damper is controlled to be zero, that is, the return air damper is closed, and the speed of the return air fan is controlled to be zero, that is, the return air fan is controlled to stop.

[0122] S504. Obtain the relative ambient humidity corresponding to the air conditioner.

[0123] The relative humidity can be the indoor relative ambient humidity or the relative ambient humidity collected from the air outlet of the indoor unit. It can be understood that the relative ambient humidity can be collected by a relative humidity sensor.

[0124] S505. If the relative ambient humidity is greater than a preset relative humidity threshold, and the temperature difference between the fresh air temperature and the indoor temperature is greater than a second preset temperature difference threshold, then control the speed of the fresh air fan to decrease.

[0125] Wherein, the first preset temperature difference threshold is greater than the second preset temperature difference threshold.

[0126] Specifically, the relative ambient humidity is compared with a preset relative humidity threshold. If the relative ambient humidity is greater than the preset relative humidity threshold, and the temperature difference between the fresh air temperature and the indoor temperature is greater than a second preset temperature difference threshold, then the speed of the fresh air fan is reduced.

[0127] It is understandable that if the temperature difference between the fresh air temperature and the indoor temperature is greater than the second preset temperature difference threshold but less than the first preset temperature difference threshold, it means that condensation may occur at the air outlet when the relative humidity of the environment is high. In this case, the speed of the fresh air fan is reduced to reduce the amount of fresh air introduced, thereby further avoiding condensation at the air outlet.

[0128] Furthermore, based on the above implementation plan, see [link to relevant documentation]. Figure 6 , Figure 6 A schematic flowchart of another air conditioning outlet control method provided in this application embodiment, including steps S601-S604:

[0129] S601, Obtain the air conditioner operating mode.

[0130] Specifically, the implementation scheme for step S601 is shown in the above implementation scheme.

[0131] S602. If the working mode of the air conditioner is heating mode, then the air outlet is closed, and the return air fan in the return air assembly is controlled to run according to the preset second direction. The second direction is used to control the air outlet of the first return air outlet, so that the air circulation is formed between the second return air outlet, the mixing air outlet and the first return air outlet.

[0132] It is understandable that during the initial heating mode startup, cold air may be blown out due to the low heat exchange efficiency of the indoor unit's heat exchanger. Therefore, when the air conditioner detects that it is operating in heating mode, the air outlet is closed, and the return air fan in the return air assembly is controlled to operate according to the preset second direction. That is, the second direction is used to control the air outlet of the second return air outlet, thus achieving air circulation between the second return air outlet and the first return air outlet during heating mode. This enhances the rate of temperature rise of the indoor unit's heat exchanger during the initial heating stage, thereby improving the air conditioner's performance. Ensuring that the air near the evaporator remains flowing during the air conditioner's heating startup not only increases the speed of hot air output during the heating startup stage but also avoids the risk of damage to the air outlet due to excessive pressure caused by the air conditioner blocking cold air.

[0133] S603. Obtain the target pipe temperature of the indoor heat exchanger in the air conditioner.

[0134] Yes, the target pipe temperature can be obtained by a temperature detection device installed on the indoor heat exchanger.

[0135] S604. When the target pipe temperature is detected to be greater than the preset first pipe temperature threshold, the air outlet is controlled to open and the return air fan is controlled to stop.

[0136] Understandably, when the detected target pipe temperature exceeds a preset first pipe temperature threshold, indicating sufficient heat exchange capacity of the indoor heat exchanger, the return air fan is stopped, reducing the airflow from the outlet, i.e., reducing the airflow between the second return air outlet and the first return air outlet. The outlet then opens to allow normal airflow, enabling normal heat exchange by the indoor unit and preventing the air conditioner from blowing cold air.

[0137] Furthermore, in some other embodiments of this application, after detecting that the target pipe temperature is greater than a preset first pipe temperature threshold, controlling the air outlet to open and controlling the return air fan to stop, the method further includes:

[0138] (1) Obtain the new target pipe temperature of the indoor heat exchanger;

[0139] (2) When a new target pipe temperature is detected to be greater than a preset second pipe temperature threshold, the return air damper in the return air assembly is controlled to close, wherein the second pipe temperature threshold is greater than the first pipe temperature threshold.

[0140] Specifically, the new target pipe temperature of the indoor heat exchanger is further detected. When the new target pipe temperature is detected to be greater than the preset second pipe temperature threshold, the return air damper in the return air assembly is controlled to close, exiting the second return air inlet. The air circulation between the return air inlet and the first return air inlet does not provide auxiliary heating for the refrigerant pipe of the indoor heat exchanger.

[0141] This application provides an air conditioner and an air conditioner air outlet control method. The air conditioner includes a fresh air duct, a first return air inlet communicating with indoor airflow, and a mixing air inlet communicating with the air outlet of the indoor unit of the air conditioner. A return air assembly is provided in the fresh air duct corresponding to the first return air inlet. The method obtains the air conditioner's operating mode; if the air conditioner's operating mode is cooling mode and the air conditioner's fresh air status is fresh air operation, then the corresponding fresh air temperature and indoor temperature are obtained; if the temperature difference between the fresh air temperature and the indoor temperature is greater than a first preset temperature difference threshold, then the return air control parameters of the return air assembly are determined based on the fresh air temperature and the indoor temperature; the return air assembly is controlled to operate according to the return air control parameters, controlling the indoor airflow to enter the fresh air duct through the first return air inlet, mixing with the fresh air in the fresh air duct, and then outputting to the room through the mixing air inlet. This application sets up a fresh air duct with a first return air inlet, and adjusts the return air component inside the fresh air duct in conjunction with the air conditioner's operating mode and fresh air status. In cooling mode, the indoor temperature and fresh air temperature are detected, and the parameters of the return air component are controlled according to the temperature difference between the indoor temperature and the fresh air temperature, thereby controlling the return air volume of the first return air inlet. Specifically, when the temperature difference between the indoor temperature and the fresh air temperature is large, the indoor return air introduced into the first return air inlet mixes with the fresh air in the fresh air duct, and the mixed air is output from the mixing air inlet to the air outlet, reducing the temperature difference between the indoor temperature and the fresh air temperature, reducing the temperature fluctuation at the air outlet, avoiding condensation at the air outlet, and improving the stability of the air outlet temperature.

[0142] To better implement the air conditioning outlet control method in this application embodiment, based on the air conditioning outlet control method, this application embodiment also provides an air conditioning outlet control device, applied to an air conditioner. The air conditioner includes a fresh air duct, the fresh air duct is provided with a first return air inlet communicating with indoor airflow, and a mixing air inlet communicating with the air outlet of the indoor unit of the air conditioner. A return air component is provided in the fresh air duct corresponding to the first return air inlet, such as... Figure 7 As shown, the air conditioning outlet control device includes modules 701-704:

[0143] Acquisition module 701: Used to acquire the air conditioner's operating mode;

[0144] First judgment module 702: If the working mode of the air conditioner is cooling mode and the fresh air state of the air conditioner is fresh air operation, then obtain the corresponding fresh air temperature and indoor temperature of the air conditioner.

[0145] The second judgment module 703 is used to determine the return air control parameters of the return air component based on the fresh air temperature and the indoor temperature if the temperature difference between the fresh air temperature and the indoor temperature is greater than the first preset temperature difference threshold.

[0146] Control module 704: Used to control the operation of the return air component according to the return air control parameters, control the airflow entering the room through the first return air inlet to the fresh air duct, mix with the fresh air in the fresh air duct, and then output to the room through the mixing air outlet.

[0147] This invention also provides an air conditioner, such as... Figure 8 As shown, Figure 8 This is a schematic diagram of an embodiment of the air conditioner provided in this application.

[0148] Air conditioning includes:

[0149] One or more processors;

[0150] Memory; and

[0151] One or more applications, wherein the one or more applications are stored in the memory and configured by the processor to execute the steps of the air conditioner air outlet control method in any of the embodiments of the above-described air conditioner timed shutdown control method.

[0152] Specifically, an air conditioner may include components such as a processor 1001 with one or more processing cores, a memory 1002 with one or more computer-readable storage media, a power supply 1003, and an input unit 1004. Those skilled in the art will understand that... Figure 8 The air conditioning structure shown does not constitute a limitation on the air conditioning system and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0153] in:

[0154] The processor 1001 is the control center of the air conditioner. It connects to various parts of the air conditioner via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 1002, and by calling data stored in the memory 1002, it performs various functions and processes data, thereby providing overall monitoring of the air conditioner. It is understood that the processor 1001 communicates with the controller via signal transmission. Optionally, the processor 1001 may include one or more processing cores; preferably, the processor 1001 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 1001.

[0155] The memory 1002 can be used to store software programs and modules. The processor 1001 executes various functional applications and data processing by running the software programs and modules stored in the memory 1002. The memory 1002 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created based on the use of the air conditioner, etc. In addition, the memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 1002 may also include a memory controller to provide the processor 1001 with access to the memory 1002.

[0156] In some embodiments of this application, the air conditioner timer shutdown control device can be implemented as a computer program, and the computer program can be implemented as follows: Figure 8 The air conditioner shown is running. The air conditioner's memory can store the various program modules that make up the air conditioner's timed shutdown control device, for example, Figure 7 The diagram shows an acquisition module 701, a first judgment module 702, a second judgment module 703, and a control module 704. The computer program comprised of these modules causes the processor to execute the steps in the air conditioning outlet control methods of the various embodiments of this application described in this specification.

[0157] For example, Figure 8 The air conditioner shown can be used as follows Figure 7 The air conditioning unit shown executes step S201 via the acquisition module 701. The air conditioner can execute step S202 via the first judgment module 702. The air conditioner can execute step S203 via the second judgment module 703. The air conditioner can execute step S204 via the control module 704. The air conditioner includes a processor, memory, and network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface is used to communicate with an external air conditioner via a network connection. When the computer program is executed by the processor, it implements an air conditioner timed shutdown control method.

[0158] The air conditioner also includes a power supply 1003 that supplies power to various components. Preferably, the power supply 1003 can be logically connected to the processor 1001 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 1003 may also include one or more DC or AC power supplies, recharging systems, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0159] The air conditioner may also include an input unit 1004, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0160] Although not shown, the air conditioner may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 1001 in the air conditioner loads the executable files corresponding to the processes of one or more application programs into the memory 1002 according to the following instructions, and the processor 1001 runs the application programs stored in the memory 1002 to realize various functions, as follows:

[0161] Get the air conditioner's operating mode;

[0162] If the air conditioner is in cooling mode and the air conditioner is in fresh air operation mode, then obtain the corresponding fresh air temperature and indoor temperature of the air conditioner.

[0163] If the temperature difference between the fresh air temperature and the indoor temperature is greater than the first preset temperature difference threshold, then the return air control parameters of the return air component are determined based on the fresh air temperature and the indoor temperature.

[0164] The return air component is controlled to operate according to the return air control parameters. The first return air inlet is controlled to allow indoor airflow to enter the fresh air duct, where it mixes with the fresh air in the fresh air duct and is then output to the room from the mixing air inlet.

[0165] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by instructions, or by instructions controlling related hardware. These instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0166] Therefore, embodiments of the present invention provide a computer-readable storage medium (hereinafter referred to as the storage medium), which may include: read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc. A computer program is stored thereon, which is loaded by a processor to execute the steps in any of the air conditioner timed shutdown control methods provided in the embodiments of the present invention. For example, the computer program loaded by the processor can execute the following steps:

[0167] Get the air conditioner's operating mode;

[0168] If the air conditioner is in cooling mode and the air conditioner is in fresh air operation mode, then obtain the corresponding fresh air temperature and indoor temperature of the air conditioner.

[0169] If the temperature difference between the fresh air temperature and the indoor temperature is greater than the first preset temperature difference threshold, then the return air control parameters of the return air component are determined based on the fresh air temperature and the indoor temperature.

[0170] The return air component is controlled to operate according to the return air control parameters. The first return air inlet is controlled to allow indoor airflow to enter the fresh air duct, where it mixes with the fresh air in the fresh air duct and is then output to the room from the mixing air inlet.

[0171] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the detailed descriptions of other embodiments above, which will not be repeated here.

[0172] In practice, each of the above units or structures can be implemented as an independent entity or can be arbitrarily combined to be implemented as the same or several entities. For the specific implementation of each of the above units or structures, please refer to the previous method embodiments, which will not be repeated here.

[0173] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0174] The above provides a detailed description of an air conditioner, an air conditioner air outlet control method, and a storage medium provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An air conditioning outlet control method, characterized in that, The method is applied to an air conditioner, the air conditioner including a fresh air duct, the fresh air duct being provided with a first return air inlet communicating with indoor airflow, and a mixing air inlet communicating with the air outlet of the indoor unit of the air conditioner, the fresh air duct being provided with a return air assembly corresponding to the first return air inlet, the method including: Get the air conditioner's operating mode; If the air conditioner is in cooling mode and the air conditioner is in fresh air operation mode, then obtain the corresponding fresh air temperature and indoor temperature of the air conditioner. If the temperature difference between the fresh air temperature and the indoor temperature is greater than the first preset temperature difference threshold, then the return air control parameters of the return air component are determined based on the fresh air temperature and the indoor temperature. The return air component is controlled to operate according to the return air control parameters, and the indoor airflow is controlled to enter the fresh air duct through the first return air inlet. After mixing with the fresh air in the fresh air duct, the air is output to the room from the mixing air outlet. The first return air vent is located on one side of the second return air vent of the indoor unit; after obtaining the air conditioner operating mode, the method further includes: If the air conditioner is in heating mode, the air outlet is closed, and the return air fan in the return air assembly is controlled to run according to the preset second direction. The second direction is used to control the air outlet of the first return air outlet, so that air circulation is formed between the second return air outlet, the mixing air outlet and the first return air outlet. Obtain the target pipe temperature of the indoor heat exchanger in the air conditioner; When the target pipe temperature is detected to be greater than the preset first pipe temperature threshold, the air outlet is controlled to open and the return air fan is controlled to stop.

2. The air conditioning outlet control method according to claim 1, characterized in that, The return air assembly includes a return air damper and a return air fan; the return air control parameters include damper opening, fan speed, and fan direction. If the temperature difference between the fresh air temperature and the indoor temperature is greater than a first preset temperature difference threshold, then the return air control parameters of the return air assembly are determined based on the fresh air temperature and the indoor temperature, including: If the temperature difference between the fresh air temperature and the indoor temperature is greater than the first preset temperature difference threshold, then the fan direction of the return air fan is determined to be the preset first direction, and the damper opening of the return air damper is determined to be the preset target opening. The first direction is used to control the air intake of the first return air inlet, and the target opening is used to control the return air volume of the first return air inlet. Query the preset mapping table corresponding to the target opening degree to obtain the fan speed corresponding to the temperature difference value, wherein the preset mapping table includes at least one mapping relationship group between speed and temperature difference.

3. The air conditioning outlet control method according to claim 1, characterized in that, After controlling the operation of the return air component according to the return air control parameters, the following steps are included: The new indoor temperature and the mixed air temperature at the mixing vent are collected at preset time intervals. Calculate the temperature difference between the new indoor temperature and the mixing temperature of the mixing vent, and generate a temperature difference change curve based on the temperature difference value; Predict the target temperature difference value at the target time point based on the temperature difference change curve, and then use the target temperature difference value; If the target temperature difference value is used to adjust the fan speed of the return air fan in the return air assembly.

4. The air conditioning outlet control method according to claim 1, characterized in that, The air conditioning fresh air duct includes a fresh air section, and a fresh air inlet connected to the outdoor airflow is provided at the free end of the fresh air section. A fresh air fan is installed in the fresh air section. After obtaining the fresh air temperature and indoor temperature corresponding to the air conditioner, the method further includes: If the temperature difference between the fresh air temperature and the indoor temperature is less than or equal to the first preset temperature difference threshold, then the opening of the return air damper in the return air assembly is adjusted to zero, and the fan speed of the return air fan in the return air assembly is adjusted to zero. Obtain the relative ambient humidity corresponding to the air conditioner; If the relative ambient humidity is greater than a preset relative humidity threshold, and the temperature difference between the fresh air temperature and the indoor temperature is greater than a second preset temperature difference threshold, then the speed of the fresh air fan is reduced.

5. The air conditioning outlet control method according to claim 1, characterized in that, After the step of controlling the air outlet to open and the return air fan to stop when the detected target pipe temperature is greater than a preset first pipe temperature threshold is completed, the method further includes: Obtain the new target pipe temperature of the indoor heat exchanger; When a new target pipe temperature is detected to be greater than a preset second pipe temperature threshold, the return air damper in the return air assembly is controlled to close, wherein the second pipe temperature threshold is greater than the first pipe temperature threshold.

6. An air conditioner, characterized in that, include: The indoor unit includes a second return air vent and an air outlet; The fresh air duct includes a first return air inlet located on one side of the second return air inlet, a fresh air inlet, and a mixing air inlet connected to the air outlet. A return air assembly is provided inside the fresh air duct corresponding to the first return air inlet. One or more processors; Memory; as well as One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the steps of the air conditioning outlet control method according to any one of claims 1 to 5.

7. The air conditioner according to claim 6, characterized in that, The return air assembly includes a return air damper; and / or a return air fan.

8. The air conditioner according to claim 6, characterized in that, The fresh air duct is equipped with a fresh air fan and a fresh air damper corresponding to the fresh air inlet; and / or; the fresh air duct is equipped with a mixing damper corresponding to the mixing air outlet; and / or; the fresh air duct also includes a fresh air outlet located indoors.

9. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps of the air conditioning outlet control method according to any one of claims 1 to 5.

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