Method and device for controlling fresh air replacement of indoor unit, air conditioner and storage medium

Abstract

The application discloses a method for controlling fresh air replacement of an indoor unit, the indoor unit comprising a switching mechanism, a first fresh air outlet path and a second fresh air outlet path, the first fresh air outlet path and the second fresh air outlet path having different air outlet directions; the method comprising: acquiring an outdoor temperature and an air conditioner air outlet temperature; determining a target fresh air outlet path according to the outdoor temperature and the air conditioner air outlet temperature; and controlling the switching mechanism to switch on and off states of the first fresh air outlet path and the second fresh air outlet path according to the target fresh air outlet path, so as to switch the fresh air outlet direction. Based on the outdoor temperature and the air conditioner air outlet temperature, a suitable target fresh air outlet path is matched. The switching mechanism is controlled to switch the fresh air outlet path to the target fresh air outlet path, so as to switch the fresh air outlet direction. The fresh air outlet direction is matched with different working conditions of the air conditioner, which is beneficial to heat exchange between the fresh air and indoor air. The application also discloses a device for controlling fresh air replacement of an indoor unit, an air conditioner and a storage medium.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent household appliances, for example to a method and device for controlling fresh air exchange of an indoor unit, an air conditioner and a storage medium. BACKGROUND

[0002] Air conditioners are mainly used for adjusting the temperature of air, and have become an indispensable part of modern life. With the increasing needs of users, the functions of air conditioners are also constantly enriched. At present, fresh air conditioners have appeared. Fresh air conditioners use centrifugal fans to realize the circulation and ventilation between room air and outdoor air, thereby purifying indoor air. This makes the living environment of users more comfortable and healthy.

[0003] In the related art, a fresh air component is disclosed, which has a fresh air outlet, an indoor air inlet and an indoor air outlet. The fresh air component includes a fan assembly, a first treatment assembly, a second treatment assembly and a ventilation switching assembly. The inlet of the fan assembly is adapted to intake air from at least one of the fresh air outlet and the indoor air inlet, and the outlet of the fan assembly is adapted to discharge air from at least one of the fresh air outlet and the indoor air outlet. The first treatment assembly is arranged on an air flow path between the fresh air outlet and the inlet of the fan assembly. The second treatment assembly is arranged on an air flow path between the indoor air inlet and the inlet of the fan assembly. The ventilation switching assembly is used to switch the fresh air component among a first state, a second state and a third state. In the first state, the fan assembly intakes air through the fresh air outlet and discharges air through the indoor air outlet. Thus, when fresh air needs to be introduced from the outdoor to the indoor, the ventilation switching assembly can be used to switch the fresh air component to the first state, so that when the fan assembly is working, outdoor air can enter the fresh air component through the fresh air outlet, be treated by the first treatment assembly, and then be sent into the indoor through the indoor air outlet. In the second state, the fan assembly intakes air through the indoor air inlet and discharges air through the indoor air outlet. Thus, when indoor air needs to be treated, the ventilation switching assembly can be used to switch the fresh air component to the second state, so that when the fan assembly is working, indoor air can enter the fresh air component through the indoor air inlet, be treated by the second treatment assembly, and then be sent back to the indoor through the indoor air outlet. In the third state, the fan assembly intakes air through the indoor air inlet and discharges air through the fresh air outlet. Thus, when indoor air needs to be discharged to the outdoor, the ventilation switching assembly can be used to switch the fresh air component to the third state, so that when the fan assembly is working, indoor air can enter the fresh air component through the indoor air inlet, be treated by the second treatment assembly, and then be discharged to the outdoor through the fresh air outlet.

[0004] In the above-mentioned fresh air component, when fresh air enters the indoor, it enters from the indoor air inlet, that is, the direction of the fresh air delivered to the indoor does not change. The essence is directional air exchange. Directional air exchange cannot adapt to the needs of the direction of fresh air under different working conditions, and is not conducive to the heat exchange rate of fresh air and indoor air. SUMMARY

[0005] The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. The summary is not an extensive overview of the embodiments nor is it intended to determine key / critical elements of the embodiments or to delineate the scope of the embodiments. The sole purpose of the summary is to present some concepts of the embodiments in a simplified form as a prelude to the more detailed description that is presented later.

[0006] The embodiments of the present disclosure provide a method and device for controlling fresh air exchange of an indoor unit, an air conditioner and a storage medium, so as to improve heat exchange efficiency of fresh air and indoor air.

[0007] In some embodiments, the indoor unit comprises a switching mechanism, a first fresh air outlet path and a second fresh air outlet path, the first fresh air outlet path and the second fresh air outlet path have different outlet directions; the method comprises: obtaining an outdoor temperature and an air conditioner outlet temperature; determining a target fresh air outlet path according to the outdoor temperature and the air conditioner outlet temperature; and controlling the switching mechanism to switch on / off states of the first fresh air outlet path and the second fresh air outlet path according to the target fresh air outlet path, so as to switch the fresh air outlet direction.

[0008] In some embodiments, the device comprises: an obtaining module configured to obtain an outdoor temperature and an air conditioner outlet temperature; a determining module configured to determine a target fresh air outlet path according to the outdoor temperature and the air conditioner outlet temperature; and a control module configured to control the switching mechanism to switch on / off states of the first fresh air outlet path and the second fresh air outlet path according to the target fresh air outlet path, so as to switch the fresh air outlet direction.

[0009] In some embodiments, the device comprises a processor and a memory storing program instructions, the processor is configured to execute the foregoing method for controlling fresh air exchange of an indoor unit when running the program instructions.

[0010] In some embodiments, the indoor unit comprises a switching mechanism, a first fresh air outlet path and a second fresh air outlet path, the first fresh air outlet path and the second fresh air outlet path have different outlet directions; the switching mechanism can switch on / off states of the first fresh air outlet path and the second fresh air outlet path, so as to switch the fresh air outlet direction; and the foregoing device for controlling fresh air exchange of an indoor unit.

[0011] In some embodiments, the storage medium stores program instructions, the program instructions are executed to perform the foregoing method for controlling fresh air exchange of an indoor unit.

[0012] The method and device for controlling fresh air exchange of an indoor unit, the air conditioner and the storage medium provided by the embodiments of the present disclosure can achieve the following technical effects:

[0013] By switching the switching mechanism, the fresh air can be controlled to blow to the indoor from the first fresh air outlet path and / or the second fresh air outlet path. Based on the outdoor temperature and the air conditioner outlet temperature, a suitable fresh air outlet path, i.e. a target fresh air outlet path, is matched. By controlling the switching mechanism, the conveying path of the fresh air is switched to the target fresh air outlet path, so as to switch the fresh air outlet direction. The fresh air outlet direction is matched with different working conditions of the air conditioner, which is beneficial to heat exchange between the fresh air and the indoor air, thereby improving the comfort of the user.

[0014] The foregoing general description and the following description are merely exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] One or more embodiments are illustrated by way of example in the accompanying drawings, which are not intended to be limiting of the embodiments, and in which like references numbers refer to like elements, the drawings are not to scale, and in which:

[0016] Figure 1 is a front view of a skeleton for an air conditioner indoor unit provided by an embodiment of the present disclosure;

[0017] Figure 2 is a perspective structural schematic view of one angle of a skeleton for an air conditioner indoor unit provided by an embodiment of the present disclosure;

[0018] Figure 3 is a perspective structural schematic view of another angle of a skeleton for an air conditioner indoor unit provided by an embodiment of the present disclosure;

[0019] Figure 4 is an internal schematic view of one angle of a fresh air module in a skeleton for an air conditioner indoor unit provided by an embodiment of the present disclosure;

[0020] Figure 5 is an internal schematic view of another angle of a fresh air module in a skeleton for an air conditioner indoor unit provided by an embodiment of the present disclosure;

[0021] Figure 6 is a skeleton for an air conditioner indoor unit provided by an embodiment of the present disclosure Figure 2 is an enlarged view of part A in the skeleton for the air conditioner indoor unit;

[0022] Figure 7 is an exploded view of a fresh air module and a first side skeleton in a skeleton for an air conditioner indoor unit provided by an embodiment of the present disclosure;

[0023] Figure 8 is a structural schematic view of a fresh air supply part in a skeleton for an air conditioner indoor unit provided by an embodiment of the present disclosure;

[0024] Figure 9 is a perspective schematic view of an indoor unit provided by an embodiment of the present disclosure;

[0025] Figure 10 is a side view of an indoor unit provided by an embodiment of the present disclosure;

[0026] Figure 11 is a schematic view of an indoor unit provided by an embodiment of the present disclosure;

[0027] Figure 12 is a schematic view of a method for controlling the indoor unit to exchange fresh air provided by an embodiment of the present disclosure;

[0028] Figure 13 is a schematic view of another method for controlling the indoor unit to exchange fresh air provided by an embodiment of the present disclosure;

[0029] Figure 14 is a schematic view of another method for controlling the indoor unit to exchange fresh air provided by an embodiment of the present disclosure;

[0030] Figure 15 is a schematic view of another method for controlling the indoor unit to exchange fresh air provided by an embodiment of the present disclosure;

[0031] Figure 16 is an application schematic view of an embodiment of the present disclosure;

[0032] Figure 17 is a schematic view of a device for controlling the indoor unit to exchange fresh air provided by an embodiment of the present disclosure;

[0033] Figure 18 is a schematic view of another device for controlling the indoor unit to exchange fresh air provided by an embodiment of the present disclosure.

[0034] Reference signs:

[0035] 100, skeleton body; 110, fresh air supply part; 111, air supply cavity; 112, fresh air hole; 120, air outlet of the skeleton body; 130, bottom skeleton; 140, back skeleton; 150, first side skeleton; 151, cover shell; 152, support frame; 153, first air supply hole; 154, inner cavity; 155, second air supply hole; 160, second side skeleton; 200, fresh air module; 210, shell; 211, first air outlet; 212, second air outlet; 213, through slot; 214, sliding slot; 215, first half shell; 216, second half shell; 217, third air supply hole; 220, fan; 300, switching mechanism; 310, shielding part; 311, toothed structure; 320, driving part; 321, motor; 322, transmission gear; 323, support; 400, machine shell; 410, third air outlet; 411, air outlet hole; 420, fourth air outlet; 500, air guide channel; 600, air supply pipeline. DETAILED DESCRIPTION

[0036] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below with reference to the accompanying drawings, which are for reference only and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0037] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0038] Unless otherwise specified, the term "a plurality of" means two or more.

[0039] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B represents: A or B.

[0040] The term "and / or" is a description of the association relationship between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0041] The term "corresponding" can refer to an association relationship or a binding relationship. A and B correspond to each other means that there is an association relationship or a binding relationship between A and B.

[0042] In combination Figure 1 As shown, the embodiments of the present disclosure provide a framework for an air conditioner indoor unit. The framework includes a framework body 100, a fresh air module 200, and a switching mechanism 300. The framework body 100 is provided with a fresh air supply part 110. The fresh air module 200 is fixed inside the framework body 100 by a fixing member or the like connection structure, and is located inside the first side framework 150 of the framework body 100. The fresh air module 200 itself forms a first fresh air outlet path. The air outlet direction of the first fresh air outlet path is the first direction. The fresh air module 200 can form a second fresh air outlet path together with the fresh air supply part 110. The air outlet direction of the second fresh air outlet path is the second direction. The second direction is different from the first direction. The switching mechanism 300 is arranged on one side of the fresh air module 200, which can switch the on-off state of the first fresh air outlet path and the second fresh air outlet path, thereby realizing the switching of different fresh air outlet directions.

[0043] When the skeleton is applied to an air conditioner indoor unit, the appropriate fresh air outlet path can be selected to deliver fresh air to the indoor unit according to the temperature difference between the air outlet temperature of the air conditioner and the fresh air temperature. The outlet direction of the fresh air is matched with the temperature difference, which is beneficial to improve the heat exchange efficiency. At the same time, the demand of the user for different fresh air directions can also be met.

[0044] In the embodiments of the present disclosure, the fresh air module 200 has a first fresh air outlet path, and the fresh air module 200 and the fresh air supply part 110 form a second fresh air outlet path. The outlet directions of the two fresh air outlet paths are different. By using the switching mechanism 300 to switch the on-off state of the first fresh air outlet path and the second fresh air outlet path, the fresh air can be blown out from different directions. In this way, when the skeleton is applied to an air conditioner, the outlet direction of the fresh air is switched to match different operating conditions of the air conditioner, which can improve the heat exchange efficiency. At the same time, the demand of the user for different fresh air directions can also be met.

[0045] Optionally, in combination with Figures 1 to 3 As shown in the figure, the skeleton body 100 includes a bottom skeleton 130, a back skeleton 140, and a first side skeleton 150 and a second side skeleton 160. The bottom skeleton 130 is configured with an air outlet 120 of the skeleton body 100. The skeleton body 100 can accommodate structures such as heat exchangers, cross-flow fans, fresh air modules 200, etc.

[0046] Optionally, in combination with Figure 4 and Figure 5 As shown in the figure, the fresh air module 200 includes a shell 210 and a fan 220. The shell 210 is arranged in the skeleton body 100 and is fixed to the inner side of the first side skeleton 150. In combination with Figure 6 As shown in the figure, the side of the shell 210 facing the first side skeleton 150 is provided with a first air outlet 211 and a second air outlet 212. However, the setting position of the first air outlet 211 and the second air outlet 212 is higher than the top of the first side skeleton 150. In this way, the first side skeleton 150 can be prevented from shielding the first air outlet 211 and the second air outlet 212, so as to ensure that the first air outlet 211 and the second air outlet 212 can normally blow air. The fan 220 is arranged in the shell 210.

[0047] Referring to Figure 7The first side skeleton 150 comprises a cover 151 and a support frame 152. The cover 151 is coupled with the support frame 152, and the support frame 152 can increase the strength and stability of the cover 151. The support frame 152 is provided with a plurality of first air supply holes 153. The cover 151 has an inner cavity 154. The shell 210 comprises a first half shell 215 and a second half shell 216. The fan 220 is arranged in a space formed by the coupling of the first half shell 215 and the second half shell 216. The first half shell 215 is arranged in close contact with the support frame 152. The bottom of the cover 151 is provided with a second air supply hole 155. The side of the first half shell 215 facing the support frame 152 is provided with a third air supply hole 217. The third air supply hole 217 corresponds to the fan 220 and the first air supply hole 153. The second air supply hole 155 is in communication with the air guide channel 500. Under the action of the operation of the fan 220, outdoor fresh air can enter the inner cavity 154 through the air guide channel 500 and the second air supply hole 155, and then enter the shell 210 through the first air supply hole 153 and the third air supply hole 217, so as to deliver fresh air to the indoor through the first fresh air outlet path and / or the second fresh air outlet path.

[0048] Optionally, the first direction of air outlet is side air outlet. The second direction of air outlet is down air outlet.

[0049] Optionally, the second air outlet 212 is in communication with the fresh air supply part 110 through the air supply pipeline 600.

[0050] When the fan 220 is running, airflow is generated. When the airflow flows through the first air outlet 211, the path formed is the first fresh air outlet path. The airflow flows directly to the outside of the skeleton through the first air outlet 211. Since the first air outlet 211 is arranged on the side of the first half shell 215 facing the first side skeleton 150, the air outlet direction of the first air outlet 211 is side air outlet.

[0051] When the airflow flows through the second air outlet 212, the air supply pipeline 600 and the fresh air supply part 110, the path formed is the second fresh air outlet path. The airflow flows to the outside of the skeleton through the fresh air supply part 110. Optionally, the fresh air supply part 110 is arranged on one side of the air outlet 120 of the skeleton body 100. The air outlet 120 of the skeleton body 100 is the original air outlet thereof, and the air outlet direction thereof is conventional down air outlet. The fresh air supply part 110 has the same air outlet direction as the air outlet 120 of the skeleton body 100, which is also down air outlet. In this way, since the air outlet directions of the first air outlet 211 and the fresh air supply part 110 are different, the fresh air outlet direction is also different.

[0052] Both new air outlet paths have a conducting state and a disconnected state. If the first new air outlet path is conducting and the second new air outlet path is disconnected, the air outlet direction is the first direction. If the first new air outlet path is disconnected and the second new air outlet path is conducting, the air outlet direction is the second direction. If both the first new air outlet path and the second new air outlet path are conducting, the air outlet direction is the first direction and the second direction.

[0053] Optionally, in combination with Figures 4 to 6 As shown, the switching mechanism 300 includes a shielding part 310 and a driving part 320. The shielding part 310 is slidably connected with the shell 210. The driving part 320 is connected with the shielding part 310 and can output power to drive the shielding part 310 to slide. By driving the shielding part 310 to slide to different positions, the shielding part 310 can avoid the air inlet side of the first new air outlet path, so that the first new air outlet path is conducting. At the same time, the air inlet side of the second new air outlet path is shielded, so that the second new air outlet path is disconnected, thereby realizing the first direction air outlet. It can also shield the air inlet side of the first new air outlet path, so that the first new air outlet path is disconnected. At the same time, the air inlet side of the second new air outlet path is avoided, so that the second new air outlet path is conducting, thereby realizing the second direction air outlet.

[0054] Optionally, the first air outlet 211 is the air inlet side of the first new air outlet path. The second air outlet 212 is the air inlet side of the second new air outlet path.

[0055] Optionally, the driving part 320 includes a motor 321 and a transmission gear 322. The motor 321 is fixed on the top of the shell 210 through a support 323. The transmission gear 322 is connected with the power output shaft of the motor 321. The top of the shielding part 310 is horizontally provided with a toothed structure 311. The toothed structure 311 is engaged with the transmission gear 322. The motor 321 outputs power to the transmission gear 322 through the power output shaft, thereby driving the transmission gear 322 to rotate. The transmission gear 322 drives the shielding part 310 to move along the depth direction of the framework body 100, so as to avoid the first air outlet 211 and shield the second air outlet 212, or shield the first air outlet 211 and avoid the second air outlet 212, or avoid the first air outlet 211 and the second air outlet 212. In this way, different new air outlet paths can be conducted to realize different new air outlet directions.

[0056] Optionally, the top of the shell 210 is provided with a through slot 213. Specifically, the through slot 213 is arranged at the top of the first half shell 215. The shielding part 310 is arranged in the through slot 213. The toothed structure 311 of the shielding part 310 is located outside the shell 210 so as to be engaged with the transmission gear 322. The other part of the shielding part 310 is located inside the shell 210. The length of the through slot 213 can make the shielding part 310 slide to two limit positions. One limit position is the position where the shielding part 310 shields the first air outlet 211, and the other limit position is the position where the shielding part 310 shields the second air outlet 212. This ensures that the shielding part 310 effectively shields the first air outlet 211 or the second air outlet 212.

[0057] Optionally, at the two ends of the length direction of the through slot 213, two flexible wind blocking parts are arranged respectively. In this way, when the shielding part 310 moves to one side, the flexible wind blocking part on the side will be pressed, and the flexible wind blocking part on the other side will be released, so as to block the through slot 213. In this way, air leakage of the through slot 213 can be prevented.

[0058] Optionally, the shielding part 310 is a plate structure. In this way, the occupied space of the shielding part 310 in the shell 210 can be reduced, so as to reduce the volume of the fresh air module 200. Further, the space occupied by the fresh air module 200 in the skeleton body 100 is reduced, so as to provide more installation space for other structures.

[0059] Optionally, the toothed structure 311 can be a rack added on the top of the shielding part 310. It can also be a meshing tooth constructed on the top of the shielding part 310.

[0060] The first air outlet 211 and the second air outlet 212 are arranged on the side of the first half shell 215 facing the first side skeleton 150 along the depth direction of the skeleton body 100. On the one hand, in this way, the first air outlet 211 can meet the side air outlet. On the other hand, the first air outlet 211 and the second air outlet 212 are arranged on the same side, and only need to drive the shielding part 310 to translate, so as to realize the switching shielding of the first air outlet 211 and the second air outlet 212. Thus, the switching difficulty is reduced.

[0061] Optionally, the width of the shielding part 310 is greater than the width of the first air outlet 211 and the width of the second air outlet 212, so as to ensure that the shielding part 310 effectively shields the first air outlet 211 and the second air outlet 212. The width of the shielding part 310 is less than or equal to the distance between the first air outlet 211 and the second air outlet 212, so as to realize that the shielding part 310 can avoid the first air outlet 211 and the second air outlet 212 at the same time, thereby forming a bidirectional fresh air outlet state.

[0062] Optionally, the first air outlet 211 is provided with a first air speed sensor to detect the air speed of the first air outlet 211. The second air outlet 212 is provided with a second air speed sensor to detect the air speed of the second air outlet 212. By the air speed, it is determined whether the shielding part 310 is moved into position, so as to timely control the shielding part 310 to stop moving.

[0063] In addition, a first switch and a second switch can also be respectively installed at the two limit positions of the sliding of the shielding part 310. When the shielding part 310 touches the switch, the switch will send a signal to the controller, indicating that the shielding part 310 has been slid into position. The controller controls the motor 321 to stop rotating, so as to make the shielding part 310 stop sliding, so that the shielding part 310 will shield the air outlet to be shielded.

[0064] Optionally, the first air speed sensor and the second air speed sensor are both ultrasonic air speed sensors. The ultrasonic air speed sensor has a small volume, which can reduce the occupation of the air outlet space and reduce the influence on the air outlet.

[0065] Optionally, referring again to Figure 4 , the shell 210 is provided with a sliding groove 214. The bottom of the shielding part 310 is slidably arranged in the sliding groove 214. The sliding groove 214 is arranged along the depth direction of the framework body 100. The sliding groove 214 limits the sliding route of the shielding part 310 to ensure the stability of the sliding of the shielding part 310.

[0066] Optionally, in order to improve the smoothness of the sliding of the shielding part 310, a pulley can be arranged at the bottom of the shielding part 310.

[0067] Optionally, referring again to Figure 3 and Figure 8 , the fresh air supply part 110 includes a supply cavity 111 and a plurality of fresh air holes 112. The supply cavity 111 is arranged on the bottom surface framework 130. The plurality of fresh air holes 112 are arranged on the surface of the bottom surface framework 130. One end of the supply cavity 111 is in communication with the air supply pipeline 600, thereby being in communication with the second air outlet 212, and the other end is in communication with each fresh air hole 112.

[0068] Each fresh air hole 112 has the same size. Compared with the air outlet through the air outlet with the same air outlet area, the air outlet through the plurality of fresh air holes 112 can make the air outlet more gentle, thereby reducing the influence of the fresh air on the indoor environment.

[0069] Optionally, each fresh air hole 112 is arranged in a regular shape, such as a circular shape, a square shape, etc.

[0070] In combination with Figures 9 to 11As shown, the embodiment of the present disclosure provides an indoor unit. The indoor unit comprises a shell 400 and the aforementioned framework for the air conditioner indoor unit. The shell 400 is provided with a third air outlet 410 on the side surface and a fourth air outlet 420 on the front surface. The framework for the air conditioner indoor unit is installed in the interior of the shell 400. The third air outlet 410 corresponds to the first air outlet 211, and the fresh air can be blown to the indoor environment through the first air outlet 211 and the third air outlet 410 in sequence. The fourth air outlet 420 corresponds to the air outlet 120 of the framework body 100, and the fresh air can be blown to the indoor environment through the second air outlet 212, the fresh air supply pipeline 600, the fresh air supply part 110 and the fourth air outlet 420 in sequence.

[0071] Optionally, the third air outlet 410 comprises a plurality of air outlet holes 411. The fresh air is blown out through the air outlet holes 411, which can make the air blowing more gentle.

[0072] Optionally, each air outlet hole 411 is arranged in a regular shape, for example, a circular shape, a square shape, etc. Thus, the appearance of the indoor unit is more beautiful.

[0073] The embodiment of the present disclosure provides an air conditioner comprising the aforementioned indoor unit.

[0074] In combination Figure 12 As shown, the embodiment of the present disclosure provides a method for controlling the fresh air of the indoor unit, comprising:

[0075] S1201, the indoor unit acquires the outdoor temperature and the air conditioner air outlet temperature.

[0076] S1202, the indoor unit determines the target fresh air outlet path according to the outdoor temperature and the air conditioner air outlet temperature.

[0077] S1203, the indoor unit controls the switching mechanism to switch the on-off state of the first fresh air outlet path and the second fresh air outlet path according to the target fresh air outlet path, so as to switch the fresh air outlet direction.

[0078] The air conditioner runs in a cooling or heating mode. The outdoor temperature is acquired in real time through the temperature sensor arranged outdoors or through the cloud big data. The outdoor temperature is also the fresh air temperature. The air conditioner air outlet temperature is acquired through the temperature sensor arranged at the air outlet of the indoor unit. The outdoor temperature and the air conditioner air outlet temperature are different when the air conditioner is in different working conditions, i.e., runs in different modes. The target fresh air outlet path is determined according to the outdoor temperature and the air conditioner air outlet temperature. The target fresh air outlet path is the first fresh air outlet path and / or the second fresh air outlet path. The switching mechanism is switched to the on-off state of the first fresh air outlet path and the second fresh air outlet path through the control of the switching mechanism. The current fresh air outlet path is the target fresh air outlet path, so as to switch the fresh air outlet direction.

[0079] In the embodiments of the present disclosure, the switching mechanism can be used to control the fresh air to be blown to the indoor space from the first fresh air outlet path and / or the second fresh air outlet path. Based on the outdoor temperature and the air conditioner outlet temperature, a suitable fresh air outlet path, i.e., a target fresh air outlet path, is matched. The switching mechanism is controlled to switch the fresh air conveying path to the target fresh air outlet path, so as to switch the fresh air outlet direction. The fresh air outlet direction is matched with different working conditions of the air conditioner, which is conducive to the heat exchange between the fresh air and the indoor air, thereby improving the comfort of the user.

[0080] Optionally, in combination with Figure 13 As shown in the figure, the embodiments of the present disclosure provide another method for controlling the fresh air of the indoor unit, comprising:

[0081] In S1201, the indoor unit acquires the outdoor temperature and the air conditioner outlet temperature.

[0082] In S1212, the indoor unit determines the fresh air outlet direction according to the outdoor temperature and the air conditioner outlet temperature.

[0083] In S1222, the indoor unit determines the target fresh air outlet path according to the fresh air outlet direction.

[0084] In S1203, the indoor unit controls the switching mechanism to switch the on-off state of the first fresh air outlet path and the second fresh air outlet path according to the target fresh air outlet path, so as to switch the fresh air outlet direction.

[0085] When the air conditioner runs in different working conditions, the outdoor temperature and the air conditioner outlet temperature have different size relationships. At the same time, when the air conditioner runs in different working conditions, the fresh air outlet direction suitable for the working condition is also different. First, the fresh air outlet direction suitable for the current air conditioner working condition is determined according to the size relationship between the indoor temperature and the air conditioner outlet temperature. Then, the target fresh air outlet path capable of realizing the fresh air outlet direction is matched according to the determined fresh air outlet direction. In this way, the fresh air outlet direction is matched with the air conditioner working condition by determining the fresh air outlet direction first and then determining the target fresh air outlet path. The heat exchange efficiency of the fresh air and the indoor air is improved. It should be noted that the specific implementation process of steps S1201 and S1203 can refer to the above embodiments, which will not be described here.

[0086] Optionally, in S1212, the indoor unit determines the fresh air outlet direction according to the outdoor temperature and the air conditioner outlet temperature, comprising:

[0087] In the case that the outdoor temperature is greater than the air conditioner outlet temperature, the indoor unit determines the front fresh air outlet direction.

[0088] In the case that the outdoor temperature is less than the air conditioner outlet temperature, the indoor unit determines the fresh air outlet direction according to the temperature difference between the outdoor temperature and the air conditioner outlet temperature.

[0089] In summer, the outdoor temperature is greater than the air conditioner outlet temperature (T 外 > T 出 ), and the air conditioner runs in a cooling mode. The fresh air temperature is high. If the high-temperature fresh air is directly delivered to the indoor side, it will affect the user's body feeling to some extent. Therefore, the fresh air outlet direction is determined to be downward. After the high-temperature fresh air is blown out from the fresh air supply part, it will first mix with the cold air blown out from the air outlet of the frame body, so that the temperature of the fresh air is reduced. In this way, the temperature of the air outlet of the air conditioner, that is, the air outlet of the fourth air outlet, will not be too high. To ensure that the user has a good body feeling. Moreover, hot air has small density and is easy to float upward. If the high-temperature fresh air is directly blown to the upper part of the room, the hot air will gather in the upper part of the room and be difficult to sink, which will cause the problem of local temperature being too high. Therefore, the hot air should be blown to the ground to realize carpet air supply. Because in carpet air supply, hot air has relatively small density compared with cold air, the high-temperature fresh air blown to the ground will continue to float upward. In the process of floating upward, the high-temperature fresh air exchanges heat with the indoor low-temperature air, so that the temperature of the high-temperature fresh air is rapidly reduced, and the heat exchange efficiency of the fresh air and the indoor air is improved. Thus, the problem of local temperature being too high can be avoided, and the user's comfort is improved.

[0090] In winter, the outdoor temperature is less than the air conditioner outlet temperature (T 外 < T 出 ), and the air conditioner runs in a heating mode. The fresh air temperature is low. If the outdoor temperature and the air conditioner outlet temperature have a large temperature difference, condensation will occur at the air outlet. Therefore, when the outdoor temperature is less than the air conditioner outlet temperature, the fresh air outlet direction is further determined according to the temperature difference ΔT between the outdoor temperature and the air conditioner outlet temperature. To match the appropriate fresh air outlet direction.

[0091] In this way, based on the size relationship between the outdoor temperature and the air conditioner outlet temperature, the fresh air outlet direction matched with the air conditioner working condition is determined to improve the heat exchange efficiency of the fresh air and the indoor air.

[0092] Optionally, the indoor unit determines the fresh air outlet direction according to the temperature difference between the outdoor temperature and the air conditioner outlet temperature, comprising:

[0093] In the case where the temperature difference is greater than or equal to the temperature difference threshold, the indoor unit determines the fresh air outlet direction to be side air outlet.

[0094] In the case where the temperature difference is less than the temperature difference threshold, the indoor unit determines the fresh air outlet direction to be downward air outlet and / or side air outlet.

[0095] A temperature difference threshold Tn is set. The relationship between Tn and ΔT is compared. If ΔT≥Tn, it indicates that the fresh air temperature is much lower than the indoor temperature. In order to avoid the user from feeling uncomfortable due to the low-temperature fresh air, the fresh air outflow direction is determined to be side outflow. In this way, the low-temperature fresh air is blown to the side, which can reduce the probability of the low-temperature fresh air being blown directly to the user, thereby ensuring that the user feels good. Moreover, as described above, if the temperature difference is large, condensation is likely to occur at the fourth air outlet of the indoor unit. Taking the dry-bulb temperature of 27℃ and the wet-bulb temperature of 19℃ as an example, if the humidity at this time is 80%, condensation will occur when the dry-bulb temperature is 16℃, and the temperature of the fourth air outlet 420 of the air conditioner is about 12℃. That is, the lower the temperature, the greater the humidity, and the more likely condensation occurs. Generally, when the temperature difference is greater than 15℃, condensation is likely to occur. If condensation occurs at the fourth air outlet, blowing water will occur during the air outlet process of the air conditioner. Therefore, when the temperature difference is large, the side outflow is selected, which can also avoid condensation at the fourth air outlet. In this way, blowing water of the air conditioner can be avoided, thereby improving the user experience. In addition, the cold air density is large and easy to sink. If the cold air is blown directly to the ground, the cold air will gather at the lower part of the room, which is easy to cause the problem of local temperature being too low. Therefore, the low-temperature fresh air is not blown from the bottom, but from the side. In this way, the low-temperature fresh air will continue to sink and exchange heat with the indoor high-temperature air during the sinking process, thereby rapidly increasing the temperature of the low-temperature fresh air and improving the heat exchange efficiency of the fresh air and the indoor air. Thus, the problem of local temperature being too low can be avoided.

[0096] If ΔT<Tn, it indicates that the fresh air temperature and the indoor temperature are similar. If the fresh air outflow direction is downward outflow, condensation will not occur at the fourth air outlet. Therefore, the fresh air outflow direction is determined to be downward outflow or side outflow. The fresh air outflow direction can also be downward outflow and side outflow, so as to quickly update the indoor air.

[0097] The temperature difference threshold Tn can be 15℃, which can be determined according to actual needs.

[0098] In this way, in the case that the outdoor temperature is less than the air outlet temperature of the air conditioner, the temperature difference between the two is further determined. The fresh air outflow direction is determined based on the temperature difference, which can avoid the blowing water of the air conditioner, and is beneficial to the heat exchange between the fresh air and the indoor air. The user experience is improved.

[0099] Optionally, in combination with Figure 14 It is shown that the embodiment of the present disclosure provides another method for controlling the fresh air of the indoor unit, which comprises the following steps:

[0100] In S1201, the indoor unit acquires the outdoor temperature and the air outlet temperature of the air conditioner.

[0101] In S1212, the indoor unit determines the fresh air outflow direction according to the outdoor temperature and the air outlet temperature of the air conditioner.

[0102] S1222, the indoor unit determines a target fresh air outlet path according to the fresh air outlet direction.

[0103] S1213, the indoor unit determines a target position of the shielding part according to the target fresh air outlet path.

[0104] S1223, the indoor unit controls the motor to operate so that the shielding part moves to the target position.

[0105] From the structure of the indoor unit as described above, by controlling the shielding part to shield or avoid the first air outlet or the second air outlet, the switching of the on-off state of the first fresh air outlet path and the second fresh air outlet path can be realized. If the determined target fresh air outlet path is only one fresh air outlet path, the target position of the shielding part is the position of the air outlet corresponding to the non-target fresh air outlet path. If the determined target fresh air outlet path is the first fresh air outlet path and the second fresh air outlet path, the target position of the shielding part is the position between the first air outlet and the second air outlet.

[0106] If the target fresh air outlet path is the first fresh air outlet path, the motor is controlled to rotate, thereby driving the shielding part to move to the position of the second air outlet. Until the shielding part completely shields the second air outlet. If the target fresh air outlet path is the second fresh air outlet path, the motor is controlled to reverse, thereby driving the shielding part to move to the position of the first air outlet. Until the shielding part completely shields the first air outlet. If the target fresh air outlet path is the first fresh air outlet path and the second fresh air outlet path, the motor is controlled to rotate, thereby driving the shielding part to move to the position between the first air outlet and the second air outlet, so that the shielding part neither shields the first air outlet nor shields the second air outlet. In this way, based on the structure of the switching mechanism, by controlling the motor to rotate, the motor drives the shielding part to move to the target position, so as to realize the fresh air outlet from the target fresh air outlet path. It should be noted that the specific implementation process of steps S1201, S1212 and S1222 can refer to the above embodiments, which will not be described here.

[0107] Optionally, in step S1223, the indoor unit controls the motor to operate so that the shielding part moves to the target position, comprising:

[0108] The wind speed sensor detects the wind speed of the first air outlet and the second air outlet.

[0109] The indoor unit controls the motor to stop operating according to the wind speed, so that the shielding part stops at the target position.

[0110] By setting the wind speed sensor in the first air outlet and the second air outlet, the first wind speed V1 of the first air outlet and the second wind speed V2 of the second air outlet are detected. If the shielding part shields the air outlet, the wind speed of the air outlet will be zero or very small. A wind speed threshold V is set.n When the air outlet wind speed is less than or equal to the wind speed threshold, it is determined that the shielding part has been moved into position, that is, the air outlet has been shielded. At this time, the control motor is stopped to make the shielding part stop at the target position. In addition, whether the shielding part shields the corresponding air outlet can also be determined by whether the controller of the indoor unit receives the signal sent by the first switch or the second switch. The first switch corresponds to the first air outlet. The second switch corresponds to the second air outlet. When the controller receives the signal of the first switch, it means that the shielding part has shielded the first air outlet. At this time, the control of the motor is stopped. When the controller receives the second switch signal, the control of the motor is the same. Based on the signal sent by the switch, it is determined whether the shielding part is moved into position, which is only applicable to the case that the fresh air is delivered through one fresh air outlet path. Therefore, whether the shielding part is moved into position can be further determined by the switch signal and the wind speed detected by the wind speed sensor.

[0111] When the two fresh air outlet paths deliver fresh air at the same time, the first wind speed and the second wind speed are relatively close. A wind speed difference threshold ΔV is set. If the absolute value of the difference between V1 and V2 is less than or equal to ΔV, it is considered that V1 and V2 are relatively close. At this time, the control motor is stopped to move the shielding plate to a position between the first air outlet and the second air outlet. Thus, the purpose of delivering fresh air through the first fresh air outlet path and the second fresh air outlet path at the same time is achieved.

[0112] Optionally, in combination with Figure 15 As shown in the figure, the embodiment of the present disclosure provides another method for controlling the fresh air of the indoor unit, comprising:

[0113] S1201, the indoor unit acquires the outdoor temperature and the air conditioner outlet temperature.

[0114] S1202, the indoor unit determines the target fresh air outlet path according to the outdoor temperature and the air conditioner outlet temperature.

[0115] S1203, the indoor unit controls the switching mechanism to switch the on-off state of the first fresh air outlet path and the second fresh air outlet path according to the target fresh air outlet path, so as to switch the fresh air outlet direction.

[0116] S1204, the indoor unit acquires the indoor air quality.

[0117] S1205, the indoor unit controls the delivery of fresh air according to the indoor air quality.

[0118] If the current target fresh air outlet path is the first fresh air outlet path or the second fresh air outlet path, that is, only one fresh air outlet path delivers fresh air to the indoor, the indoor air quality is detected after the preset time length of delivering fresh air. The detected air quality is mainly humidity and CO2 concentration in the air. A concentration threshold and a humidity threshold are set.

[0119] If the CO2 concentration is less than or equal to the concentration threshold value and the humidity is greater than or equal to the humidity threshold value, it means that the fresh air is delivered to the indoor space through one fresh air outlet path, which can effectively reduce the CO2 concentration and increase the humidity in the indoor space. At this time, the indoor air quality has reached the standard, and the fan of the fresh air module is stopped to stop delivering fresh air to the indoor space.

[0120] If the CO2 concentration is greater than the concentration threshold value and / or the humidity is less than the humidity threshold value, it means that the fresh air is delivered to the indoor space through one fresh air outlet path, which is not obvious for improving the indoor air quality. Therefore, the new target fresh air outlet path is determined as the first fresh air outlet path and the second fresh air outlet path. The switching mechanism is controlled to switch the current target fresh air outlet path to the new target fresh air outlet path. Specifically, the motor is controlled to rotate and drive the blocking part to move between the first air outlet and the second air outlet. In this way, the fresh air is delivered to the indoor space through two fresh air outlet paths at the same time to quickly update the indoor air. At the same time, the indoor air quality is detected in real time, and when the indoor air quality reaches the standard, the fresh air module is stopped to run.

[0121] It should be noted that the specific implementation process of steps S1201, S1202 and S1203 can be referred to the above embodiments, which will not be repeated here.

[0122] In practical applications, in combination with Figure 16 as shown:

[0123] S1601, the air conditioner runs in a fresh air mode, and runs in a cooling mode or a heating mode;

[0124] S1602, obtaining T 外 and T 出 ;

[0125] S1603, judging the size relationship between T 外 and T 出 ; if T 外 >T 出 , S1604 is executed; if T 外 <T 出 , S1605 is executed;

[0126] S1604, the motor drives the blocking part to move and blocks the first air outlet; then S1608 is executed;

[0127] S1605, judging whether ΔT is greater than or equal to Tn; if yes, S1606 is executed; if no, S1604, S1606 or S1607 is executed;

[0128] S1606, control the motor to drive the shielding part to move and shield the second air outlet; then perform S1608;

[0129] S1607, control the motor to drive the shielding part to move and simultaneously avoid the first air outlet and the second air outlet; then perform S1608;

[0130] S1608, after a preset time period, detect the indoor air quality;

[0131] S1609, determine whether the indoor air quality meets the standard; if yes, perform S1610; if no, perform S1611.

[0132] S1610, control the fresh air module to close;

[0133] S1611, determine whether the shielding plate simultaneously avoids the first air outlet and the second air outlet; if yes, perform S1609; if no, perform S1607.

[0134] In combination Figure 17 As shown in the drawings, the embodiment of the present disclosure provides a device for controlling fresh air exchange of an indoor unit, comprising an acquisition module 171, a determination module 172 and a control module 173. The acquisition module 171 is configured to acquire an outdoor temperature and an air conditioner outlet air temperature; the determination module 172 is configured to determine a target fresh air outlet path according to the outdoor temperature and the air conditioner outlet air temperature; and the control module 173 is configured to control a switching mechanism to switch on and off states of a first fresh air outlet path and a second fresh air outlet path according to the target fresh air outlet path, so as to switch a fresh air outlet direction.

[0135] By using the device for controlling fresh air exchange of an indoor unit provided by the embodiment of the present disclosure, a suitable fresh air outlet path, i.e. a target fresh air outlet path, is matched based on the outdoor temperature and the air conditioner outlet air temperature. By controlling the switching mechanism, the fresh air conveying path is switched to the target fresh air outlet path, so as to switch the fresh air outlet direction. The fresh air outlet direction is matched with different working conditions of the air conditioner, which is conducive to heat exchange between the fresh air and the indoor air, thereby improving the comfort of use of the user.

[0136] In combination Figure 18As shown, the device for controlling the fresh air exchange of the indoor unit provided by the embodiments of the present disclosure includes a processor 180 and a memory 181. Optionally, the device can further include a communication interface 182 and a bus 183. The processor 180, the communication interface 182 and the memory 181 can communicate with each other through the bus 183. The communication interface 182 can be used for information transmission. The processor 180 can invoke the logical instructions in the memory 181 to execute the method for controlling the fresh air exchange of the indoor unit in the above embodiments.

[0137] In addition, the logical instructions in the memory 181 described above can be implemented in the form of a software functional unit and sold or used as an independent product, which can be stored in a computer readable storage medium.

[0138] The memory 181 as a computer readable storage medium can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiments of the present disclosure. The processor 180 executes the program instructions / modules stored in the memory 181 to perform functional applications and data processing, that is, to implement the method for controlling the fresh air exchange of the indoor unit in the above embodiments.

[0139] The memory 181 can include a program storage area and a data storage area. The program storage area can store an operating system and application programs required by at least one function; the data storage area can store data created during use of the terminal device, etc. In addition, the memory 181 can include a high-speed random access memory, and can further include a non-volatile memory.

[0140] The embodiments of the present disclosure provide an indoor unit including the device for controlling the fresh air exchange of the indoor unit described above.

[0141] The embodiments of the present disclosure provide a storage medium storing computer executable instructions, which are configured to execute the method for controlling the fresh air exchange of the indoor unit described above.

[0142] The storage medium described above can be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

[0143] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0144] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0145] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to apparatuses, devices, etc.), can be implemented in other manners. For example, the described apparatus embodiments can be implemented only in a form of a logical function, and can be implemented by using a manner such as software (for example, application program) or the like. In some embodiments, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling or direct coupling or indirect coupling between different units, or the coupling or direct coupling or indirect coupling between the displayed or discussed communication connections can be in a form of electrical, mechanical or other forms.

[0146] The flowcharts and block diagrams in the drawings show the possible implementation architectures, functions and operations of the system, method and computer program product according to the embodiments of the present disclosure. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment or a part of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions noted in the blocks can occur in an order different from that noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the drawings, the operations or steps corresponding to different blocks can also occur in an order different from that disclosed in the descriptions, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling fresh air replacement of an indoor unit, characterized by, The indoor unit comprises: a skeleton for an air conditioning indoor unit; the skeleton comprises: a skeleton body, a fresh air module, a switching mechanism, a first fresh air outlet path and a second fresh air outlet path; the air outlet directions of the first fresh air outlet path and the second fresh air outlet path are different; the fresh air module comprises: a shell and a fan, the shell is towards one side of the first side skeleton, and the first air outlet and the second air outlet are arranged on the same side along the depth direction of the skeleton body; the switching mechanism comprises: a shielding part and a driving part, the shielding part can shield or avoid the first air outlet or the second air outlet to realize switching of the on-off state of the first fresh air outlet path and the second fresh air outlet path, and the driving part comprises a motor; the method comprises: obtaining an outdoor temperature and an air conditioner outlet temperature; determining a target fresh air outlet path according to the outdoor temperature and the air conditioner outlet temperature; controlling the switching mechanism to switch the on-off state of the first fresh air outlet path and the second fresh air outlet path according to the target fresh air outlet path, so as to switch the fresh air outlet direction; wherein, the target fresh air outlet path is determined according to the outdoor temperature and the air conditioner outlet temperature, comprising: determining the fresh air outlet direction according to the outdoor temperature and the air conditioner outlet temperature; determining the target fresh air outlet path according to the fresh air outlet direction; determining the fresh air outlet direction according to the outdoor temperature and the air conditioner outlet temperature, comprising: in the case that the outdoor temperature is greater than the air conditioner outlet temperature, determining the fresh air outlet direction as the front air outlet; in the case that the outdoor temperature is less than the air conditioner outlet temperature, determining the fresh air outlet direction according to the temperature difference between the outdoor temperature and the air conditioner outlet temperature; determining the fresh air outlet direction according to the temperature difference between the outdoor temperature and the air conditioner outlet temperature, comprising: in the case that the temperature difference is greater than or equal to a temperature difference threshold, determining the fresh air outlet direction as the side air outlet to avoid condensation at the air outlet corresponding to the down air outlet; in the case that the temperature difference is less than the temperature difference threshold, determining the fresh air outlet direction as the down air outlet and / or the side air outlet; controlling the switching mechanism to switch the on-off state of the first fresh air outlet path and the second fresh air outlet path according to the target fresh air outlet path, comprising: determining the target position of the shielding part according to the target fresh air outlet path; controlling the motor to run, so that the shielding part moves to the target position.

2. The method of claim 1, wherein: the air outlet direction of the first fresh air outlet path is side air outlet; the air outlet direction of the second fresh air outlet path is down air outlet.

3. The method of claim 1, wherein, The method further comprises: obtaining indoor air quality; controlling the delivery of fresh air according to the indoor air quality.

4. A device for controlling fresh air replacement of an indoor unit, characterized by, The indoor unit comprises: a framework for an air conditioner indoor unit; the framework comprises: a framework body, a fresh air module, a switching mechanism, a first fresh air outlet path and a second fresh air outlet path; the first fresh air outlet path and the second fresh air outlet path have different air outlet directions; the fresh air module comprises: a shell and a fan, the shell is opened with a first air outlet and a second air outlet towards one side of the first side framework, the first air outlet and the second air outlet are arranged along the depth direction of the framework body, and the first air outlet and the second air outlet are arranged on the same side; the switching mechanism comprises: a shielding part and a driving part, the shielding part can shield or avoid the first air outlet or the second air outlet to switch the on-off state of the first fresh air outlet path and the second fresh air outlet path, and the driving part comprises a motor; the device comprises: An acquisition module configured to acquire an outdoor temperature and an air conditioner outlet temperature; A determination module configured to determine a target fresh air outlet path according to the outdoor temperature and the air conditioner outlet temperature; A control module configured to control the switching mechanism to switch the on-off state of the first fresh air outlet path and the second fresh air outlet path according to the target fresh air outlet path to switch the fresh air outlet direction; Wherein, the target fresh air outlet path is determined according to the outdoor temperature and the air conditioner outlet temperature, comprising: determining the fresh air outlet direction according to the outdoor temperature and the air conditioner outlet temperature; and determining the target fresh air outlet path according to the fresh air outlet direction; The fresh air outlet direction is determined according to the outdoor temperature and the air conditioner outlet temperature, comprising: in the case that the outdoor temperature is greater than the air conditioner outlet temperature, determining the fresh air outlet direction as the lower air outlet; and in the case that the outdoor temperature is less than the air conditioner outlet temperature, determining the fresh air outlet direction according to the temperature difference between the outdoor temperature and the air conditioner outlet temperature; The fresh air outlet direction is determined according to the temperature difference between the outdoor temperature and the air conditioner outlet temperature, comprising: in the case that the temperature difference is greater than or equal to a temperature difference threshold, determining the fresh air outlet direction as the side air outlet to avoid condensation at the air outlet corresponding to the lower air outlet; and in the case that the temperature difference is less than the temperature difference threshold, determining the fresh air outlet direction as the lower air outlet and / or the side air outlet; The switching mechanism is controlled to switch the on-off state of the first fresh air outlet path and the second fresh air outlet path according to the target fresh air outlet path, comprising: determining the target position of the shielding part according to the target fresh air outlet path; and controlling the motor to operate to move the shielding part to the target position.

5. A device for controlling fresh air replacement of an indoor unit, comprising a processor and a memory having stored program instructions, characterized in that, The processor is configured to execute the program instructions to perform the method for controlling the fresh air of the indoor unit according to any one of claims 1 to 3.

6. An indoor unit, characterized by comprising: Comprise: A framework for an air conditioner indoor unit; The framework comprises: A framework body; A fresh air module comprising a shell and a fan, the shell is opened with a first air outlet and a second air outlet towards one side of the first side framework, the first air outlet and the second air outlet are arranged along the depth direction of the framework body, and the first air outlet and the second air outlet are arranged on the same side; The switching mechanism comprises a shielding part and a driving part, the shielding part can shield or avoid the first air outlet or the second air outlet to realize switching of the first fresh air outlet path and the second fresh air outlet path, and the driving part comprises a motor; The first fresh air outlet path and the second fresh air outlet path have different air outlet directions. The device for controlling fresh air replacement of an indoor unit according to claim 4 or 5.

7. A storage medium storing program instructions, characterized in that, The program instructions, when executed, perform the method for controlling fresh air replacement of an indoor unit according to any one of claims 1 to 3. The program instructions, when executed, perform the method for controlling fresh air replacement of an indoor unit according to any one of claims 1 to 3.

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