Air conditioner and control method of air conditioner

Abstract

The application discloses an air conditioner and a control method thereof. The air conditioner comprises a shell, a heat exchanger, a heat exchanger fan, a fresh air volute, a fresh air fan, a mixed air cavity shell connected with the shell and arranged at a position close to a heat exchange air outlet of the mixed air cavity shell, at least one end of the mixed air cavity shell connected with a fresh air outlet, a mixed air inlet and a mixed air outlet arranged on the mixed air cavity shell, the mixed air inlet arranged on one side of the mixed air cavity shell close to the heat exchange air outlet, the mixed air outlet arranged on the other side of the mixed air cavity shell away from the heat exchange air outlet, a mixed air temperature sensor arranged in the mixed air cavity shell and used for detecting a temperature value of air flow in the mixed air cavity shell, and a controller configured to control the heat exchanger fan to start running and the fresh air fan to stop running, open the mixed air inlet so that part of the heat exchange air flow enters the mixed air cavity shell through the mixed air inlet, and close or open the mixed air outlet at a small angle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, and in particular to an air conditioner and a control method of the air conditioner. BACKGROUND

[0002] With the development of science and technology and the improvement of people's living standards, people are increasingly pursuing a smart and healthy lifestyle. Traditional air conditioners that only have the functions of heating and cooling (including dehumidification) can no longer meet the needs of users. Moreover, most traditional air conditioners perform closed cycle air volume. Long-term closed cycle air volume is prone to bacterial growth, which may affect the healthy life of users to some extent, for example, may cause users to have symptoms such as colds and air conditioning diseases. Therefore, how to ensure the quality of indoor air while heating or cooling and meet the comfort needs of users has gradually become an important research direction.

[0003] The temperature of fresh air and air conditioning air is opposite, and "blowing hot air in summer and blowing cold air in winter" is a user pain point of many new air conditioners. When the indoor and outdoor environmental temperature difference is large, the fresh air temperature and the indoor temperature difference is obvious. Therefore, when the fresh air is opened, the user will feel the airflow of two different temperatures, and has a more obvious discomfort, reducing the user experience.

[0004] In the related art, the existing fresh air mixing air conditioner can improve the freshness of indoor air, but the fresh air and air conditioning air are not fully exchanged in the fresh air cavity, which easily causes large indoor temperature fluctuations and causes human discomfort. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides an air conditioner, which can fully mix the fresh air for cooling or heating with the heat exchange air before releasing it to the indoor, achieving the effect of constant temperature fresh air, avoiding the problem of large indoor temperature fluctuations, and effectively improving the comfort of users.

[0006] The present application also provides a control method of the air conditioner.

[0007] The air conditioner according to the first embodiment of the present invention comprises: a shell provided with a heat exchange air inlet and a heat exchange air outlet; a heat exchanger arranged inside the shell; a heat exchange fan arranged inside the shell, and a heat exchange air flow formed by heat exchange in the heat exchanger is output outward from the heat exchange air outlet under the operation drive of the heat exchange fan; a fresh air volute arranged in the shell, one end of which is provided with a fresh air mixed air inlet and the other end of which is provided with a fresh air mixed air outlet; the fresh air fan is arranged inside the fresh air volute, The outdoor air is introduced into the interior of the fresh air volute through the fresh air mixed air inlet, and the fresh air is output to the outside through the fresh air mixed air outlet; the air mixing chamber shell is connected to the shell and is arranged at a position where the air mixing chamber shell is adjacent to the heat exchange air outlet; at least one end of the air mixing chamber shell is connected to the fresh air mixed air outlet, so that part of the air flow transported by the fresh air mixed air outlet enters the interior of the air mixing chamber shell; the air mixing chamber shell is provided with a mixed air inlet and a mixed air outlet, and the mixed air inlet is provided with a The mixed air outlet is arranged on a side of the mixed air chamber shell adjacent to the heat exchange air outlet, and the mixed air outlet is arranged on a side of the mixed air chamber shell away from the heat exchange air outlet; the mixed air temperature sensor is arranged inside the mixed air chamber shell, and is used to detect the temperature value of the air flow in the mixed air chamber shell; the controller is configured to control the heat exchange fan to start and the fresh air fan to stop running, open the mixed air inlet, so that part of the heat exchange air flow enters the mixed air chamber shell from the heat exchange air outlet through the mixed air inlet Inside, close or reduce the mixed air outlet to limit the air outlet volume of the mixed air outlet; after the heat exchange fan starts to run, control the fresh air fan to restart to allow the fresh air flow to enter the mixed air cavity shell from the fresh air mixed air outlet and mix with the heat exchange air flow contained in the mixed air cavity shell; when the difference between the mixed air temperature value detected by the mixed air temperature sensor and the user-set temperature value is less than a preset threshold, control the mixed air outlet to open to increase the air outlet volume of the mixed air outlet.

[0008] According to the air conditioner of an embodiment of the present invention, after the air conditioner is started, the user can instruct the air conditioner to turn on the fresh air mixing function, so that the controller controls the heat exchange fan to start running, and the fresh air fan to stop running, and closes or reduces the mixed air outlet. Under this condition, the mixed air inlet is opened to allow the heat exchange airflow to enter the mixed air chamber shell, and then the fresh air fan is controlled to restart running, so that the fresh air flow and the heat exchange airflow are fully mixed in the mixed air chamber shell. When the difference between the mixed air temperature value detected by the mixed air temperature sensor and the user-set temperature value is less than the preset threshold, the mixed air outlet is opened, so that the fresh air mixed air flow that meets the temperature requirements can be released into the room, thereby improving the freshness of the indoor air while achieving the effect of constant temperature fresh air, avoiding the problem of large indoor temperature fluctuations, thereby effectively improving the user's comfort.

[0009] According to some embodiments of the present invention, the controller is specifically configured as follows: the controller is specifically configured to control the heat exchange fan to start and run and the fresh air fan to stop running, open the mixed air inlet to allow part of the heat exchange air flow to enter the interior of the mixed air chamber shell from the heat exchange air outlet through the mixed air inlet, and close or reduce the mixed air outlet; and after time T1, control the fresh air fan to start running again to allow the fresh air flow to enter the mixed air chamber shell from the fresh air mixed air outlet and mix with the heat exchange air flow contained in the mixed air chamber shell, T1>0.

[0010] According to some embodiments of the present invention, the controller is specifically configured to control the mixed air outlet to open when it is determined that the difference between the mixed air temperature value detected by the mixed air temperature sensor and the temperature value set by the user is less than a preset threshold; and when the difference between the mixed air temperature value detected by the mixed air temperature sensor and the temperature value set by the user is greater than a preset threshold, control the mixed air outlet to close or reduce the opening angle to limit the air outlet volume of the mixed air outlet.

[0011] According to some embodiments of the present invention, the controller is specifically configured to control the heat exchange fan to start and the fresh air fan to stop running after the mixed air outlet is switched from open to closed or the opening angle is reduced, and open the mixed air inlet to allow part of the heat exchange air flow to enter the interior of the mixed air cavity shell from the heat exchange air outlet through the mixed air inlet, and close or reduce the mixed air outlet; after the heat exchange fan starts running, control the fresh air fan to start running again to allow the fresh air flow to enter the mixed air cavity shell from the fresh air mixed air outlet and mix with the heat exchange air flow contained in the mixed air cavity shell; when the difference between the mixed air temperature value detected by the mixed air temperature sensor and the user-set temperature value is less than a preset threshold, control the mixed air outlet to open to increase the air outlet volume of the mixed air outlet.

[0012] According to some embodiments of the present invention, it also includes: a first air mixing plate, which is rotatably connected to the mixed air inlet, and the rotation of the first air mixing plate can realize on-off control of part of the heat exchange airflow flowing out of the heat exchange air outlet to flow into the mixed air cavity shell; and a second air mixing plate, which is rotatably connected to the mixed air outlet, and the rotation of the second air mixing plate can realize on-off control of the fresh air flow and / or heat exchange airflow in the mixed air cavity shell flowing out of the mixed air outlet.

[0013] According to some embodiments of the present invention, it also includes: a first driving member, the first air mixing driving member is transmission-connected to the first air mixing plate, the first driving member drives the first air mixing plate to rotate so that the mixed air inlet is opened or closed; and a second driving member, the second driving member is transmission-connected to the second air mixing plate, the second driving member drives the second air mixing plate to rotate so that the mixed air outlet is opened or closed.

[0014] According to some embodiments of the present invention, the air mixing chamber shell extends in the longitudinal direction of the air conditioner; and / or the air mixing inlet is constructed in a long strip shape, and the length of the air mixing inlet in the longitudinal direction of the air conditioner is smaller than the length of the heat exchange duct in the longitudinal direction of the air conditioner; and / or the air mixing outlet is constructed in a long strip shape, and the length of the air mixing outlet in the longitudinal direction of the air conditioner is smaller than the length of the heat exchange duct in the longitudinal direction of the air conditioner.

[0015] According to the control method of the air conditioner according to the second aspect of the embodiment of the present invention, after the air conditioner is started, the fresh air mixing function of the air conditioner can be turned on, the heat exchange fan starts running and the fresh air fan stops running, the mixed air inlet is opened, and part of the heat exchange air flow enters the interior of the mixed air cavity shell from the heat exchange air outlet through the mixed air inlet, and the mixed air outlet is closed or reduced to limit the air outlet volume of the mixed air outlet; after the heat exchange fan starts running, the fresh air fan starts running again, and the fresh air flow enters the mixed air cavity shell from the fresh air mixed air outlet and mixes with the heat exchange air flow contained in the mixed air cavity shell; when the difference between the mixed air temperature value detected by the mixed air temperature sensor and the user-set temperature value is less than a preset threshold value, the mixed air outlet is opened to increase the air outlet volume of the mixed air outlet.

[0016] According to some embodiments of the present invention, when the difference between the mixed air temperature value detected by the mixed air temperature sensor and the temperature value set by the user is less than a preset threshold value, the mixed air outlet is opened to increase the air outlet volume of the mixed air outlet; and when the difference between the mixed air temperature value detected by the mixed air temperature sensor and the temperature value set by the user is greater than a preset threshold value, the mixed air outlet is closed or the opening angle is reduced to limit the air outlet volume of the mixed air outlet.

[0017] According to some embodiments of the present invention, after the mixed air outlet is switched from open to closed or the opening angle is reduced, after a time T2 has passed, the air conditioner operates according to the control method of the air conditioner, and T2>0.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0020] Figure 1 is a structural diagram of an air conditioner according to an embodiment of the present invention;

[0021] Figure 2 The internal structure of the air conditioner according to the embodiment of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 3 2. Schematic diagram of the air outlet of the heat exchange fan of the air conditioner according to an embodiment of the present invention;

[0023] Figure 4 is a partially enlarged schematic diagram of turning on a heat exchange fan of an air conditioner according to an embodiment of the present invention;

[0024] Figure 5 is a schematic diagram of air outlet when the first air mixing plate is opened in an air conditioner according to an embodiment of the present invention;

[0025] Figure 6 is a partially enlarged schematic diagram of an air conditioner according to an embodiment of the present invention with the first air mixing plate opened;

[0026] Figure 7 2. Schematic diagram of the air outlet of the fresh air blower of the air conditioner according to an embodiment of the present invention;

[0027] Figure 8 2. is a schematic diagram of air outlet when the second air mixing plate of the air conditioner is opened according to an embodiment of the present invention;

[0028] Figure 9 The internal structure of the air conditioner according to the embodiment of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 10 is an enlarged schematic diagram of the internal structure of an air conditioner according to an embodiment of the present invention;

[0030] Figure 11 1 is a timing flow chart of turning on the fresh air function of the air conditioner according to an embodiment of the present invention.

[0031] Reference numerals:

[0032] 100. Air conditioner; 10. Housing; 11. Heat exchange duct; 12. Heat exchanger; 13. Heat exchange fan; 14. Heat exchange outlet; 15. Heat exchange air guide plate; 21. Fresh air volute; 22. Fresh air fan; 23. Mixed air chamber housing; 24. Mixed air inlet; 25. Mixed air outlet; 26. Fresh air mixed air inlet; 27. Fresh air mixed air outlet; 30. Second mixing plate; 40. First mixing plate; 50. Connecting pipe; 60. Mixed air temperature sensor. DETAILED DESCRIPTION

[0033] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0034] Reference below Figures 1-11 An air conditioner 100 according to an embodiment of the present invention is described, and the present invention also provides a control method for the air conditioner 100.

[0035] like Figure 1-Figure 3 As shown, the air conditioner 100 includes: a housing 10, a heat exchanger 12, a heat exchange fan 13, a fresh air volute 21 and a fresh air fan 22.

[0036] The housing 10 is provided with a heat exchange inlet and a heat exchange outlet 14. The heat exchanger 12 and the heat exchange fan 13 are both disposed within the housing 10. The heat exchange airflow formed by heat exchange in the heat exchanger 12 is output outward through the heat exchange outlet 14 under the operation of the heat exchange fan 13. In this way, the operation of the heat exchange fan 13 draws airflow from the exterior of the housing 10 into the interior of the housing 10 through the heat exchange inlet, where it undergoes heat exchange in the heat exchanger 12 to form a heat exchange airflow. The heat exchange airflow is then output outward through the heat exchange outlet 14 under the operation of the heat exchange fan 13, thereby achieving the effect of cooling or heating the indoor airflow to achieve the desired comfortable temperature for the user. In addition, a heat exchange air duct 11 is provided in the heat exchanger 12, and the heat exchange air duct 11 is used for the passage of hot exchange air. The heat exchange air duct 11 corresponds to the heat exchanger 12, and the heat exchange air duct 11 is connected to the heat exchange air outlet 14, so that after the indoor air enters the shell 10, it is heat-exchanged by the heat exchanger 12 to form hot exchange air, and then released into the room through the heat exchange air outlet 14 to achieve the cooling and heating effects of the air conditioner 100.

[0037] In addition, a fresh air volute 21 is arranged in the housing 10, and a fresh air mixed air inlet 26 is arranged at one end of the fresh air volute 21, and a fresh air mixed air outlet 27 is arranged at the other end of the fresh air volute 21. Among them, the fresh air volute 21 is usually arranged at one end of the air conditioner 100 to facilitate the introduction of outdoor fresh air. The fresh air fan 22 is arranged inside the fresh air volute 21, and introduces the outdoor air flow into the fresh air volute 21 through the fresh air mixed air inlet 26, and outputs the fresh air flow outward through the fresh air mixed air outlet 27. In this way, the outdoor air flow is introduced into the fresh air volute 21 through the fresh air mixed air inlet 26 through the driving operation of the fresh air fan 22, and the fresh air fan 22 filters the incoming fresh air flow and outputs the fresh air flow outward through the fresh air mixed air outlet 27, which can improve the freshness of the indoor air and achieve the fresh air effect of the air conditioner 100.

[0038] In addition, the air conditioner 100 further includes: an air mixing chamber housing 23, a first air mixing plate 40, a second air mixing plate 30, an air mixing temperature sensor 60 and a controller (not shown in the drawings).

[0039] The air mixing chamber housing 23 is connected to the housing 10 and is disposed adjacent to the heat exchange outlet 14. At least one end of the air mixing chamber housing 23 is connected to the fresh air mixed air outlet 27, so that a portion of the airflow delivered by the fresh air mixed air outlet 27 enters the interior of the air mixing chamber housing 23. Furthermore, an air mixing inlet 24 and an air mixing outlet 25 are disposed on the air mixing chamber housing 23. The air mixing inlet 24 is disposed on a side of the air mixing chamber housing 23 adjacent to the heat exchange outlet 14, and the air mixing outlet 25 is disposed on a side of the air mixing chamber housing 23 away from the heat exchange outlet 14. In this way, a mixed air inlet 24 is provided on the side of the mixed air chamber shell 23 adjacent to the heat exchange air outlet 14, so that part of the mixed air flow can enter the mixed air chamber shell 23 through the mixed air inlet 24, and the mixed air chamber shell 23 is also connected with the fresh air mixed air outlet 27 of the fresh air volute 21, so that the fresh air flow can enter the mixed air chamber shell 23. When the fresh air flow and the heat exchange air flow enter the mixed air chamber shell 23 and are mixed, the effect of constant temperature fresh air can be achieved. In this way, the temperature of the mixed air flow blown out from the mixed air outlet 25 is not much different from the indoor temperature, which can effectively improve the problem of large indoor temperature fluctuations caused by the introduction of fresh air.

[0040] In summary, different air outlet modes can be achieved by controlling the opening and closing of the mixed air outlet 25 and the mixed air inlet 24 .

[0041] For example, when the heat exchange fan 13 is turned on and the mixed air inlet 24 is closed, the heat exchange airflow cannot enter the mixed air chamber housing 23, so the heat exchange airflow can be blown out from the heat exchange air outlet 14, and the air conditioner 100 operates in the heat exchange air mode; and / or when the fresh air fan 22 is turned on and the mixed air outlet 25 is opened, the fresh air flow can be blown out from the mixed air outlet 25, and the air conditioner 100 operates in the fresh air mode. In this case, the heat exchange mode and the fresh air mode operate independently.

[0042] For another example, when the heat exchange fan 13 is turned on and the mixed air inlet 24 is opened, under the operation of the heat exchange fan 13, part of the heat exchange air flow can enter the mixed air chamber shell 23 from the mixed air inlet 24. In this case, the fresh air fan 22 can be turned on to allow the fresh air flow to also enter the mixed air chamber shell 23, so as to achieve the mixing of the fresh air flow and the heat exchange air flow. Then, the mixed air outlet 25 is opened to release the mixed air flow of the fresh air flow and the heat exchange air flow into the room, that is, the air conditioner 100 operates in the fresh air mixed air mode, which can achieve a constant temperature on the one hand. As for the effect of fresh air, the temperature of the mixed air flow is very close to the indoor temperature, which improves the problem of large indoor temperature fluctuations caused by the introduction of fresh air; on the other hand, the large amount of hot air generated by the heat exchanger 12 will make the air pressure in the heat exchange duct 11 relatively high, and then opening the mixed air inlet 24 can form a significant difference with the air pressure in the mixed air chamber shell 23, so that a large amount of hot air is conducive to quickly entering the mixed air chamber shell 23, so that after the fresh air fan 22 is turned on, it is fully mixed with the fresh air in the mixed air chamber shell 23, and the effect of constant temperature fresh air is better.

[0043] Furthermore, a mixed air temperature sensor 60 is disposed within the air mixing chamber housing 23 and is used to detect the temperature of the airflow within the air mixing chamber housing 23. Thus, when the fresh air flow and the heat exchange air flow enter the air mixing chamber housing 23 and mix, the mixed air temperature sensor 60 is used to detect whether the temperature of the mixed air flow meets the required indoor temperature. Only when the required indoor temperature is met can the mixed air outlet 25 be opened to ensure that the airflow meets the human comfort requirement. This effectively prevents the fresh air from being directly blown out of the mixed air outlet 25 without being fully mixed with the heat exchange air, resulting in a significant difference in the temperature of the fresh air released into the room and the indoor temperature, causing discomfort to the user.

[0044] Combine Figure 11As shown, the controller is configured to control the heat exchange fan 13 to start running, and the fresh air fan 22 to stop running, open the mixed air inlet 24, so that part of the heat exchange air flow enters the interior of the mixed air chamber shell 23 from the heat exchange air outlet 14 through the mixed air inlet 24, close or reduce the mixed air outlet 25 to limit the air outlet volume of the mixed air outlet 25; after the heat exchange fan 13 starts running, control the fresh air fan 22 to start running again, so that the fresh air flow enters the mixed air chamber shell 23 from the fresh air mixed air outlet 27, and mixes with the heat exchange air flow contained in the mixed air chamber shell 23; when the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the user-set temperature value is less than the preset threshold value, control the mixed air outlet 25 to open, so as to increase the air outlet volume of the mixed air outlet 25.

[0045] That is to say, during the operation of the air conditioner 100, if the fresh air mixing function needs to be operated, the controller controls the heat exchange fan 13 to start and operate, and the fresh air fan 22 stops running, and the mixed air inlet 24 is opened, so that a heat exchange airflow is generated under the rotation of the heat exchange fan 13. At this time, the air pressure in the mixed air chamber shell 23 is lower than the air pressure in the heat exchange air duct 11, so that the heat exchange airflow can quickly enter the mixed air chamber shell 23 through the mixed air inlet 24. It should be noted that during this process, the mixed air outlet 25 is in a closed state or the opening angle of the mixed air outlet 25 is reduced, so that the air output of the mixed air outlet 25 can be limited. Then, after the heat exchange fan 13 starts running, the fresh air fan 22 is controlled to start running again, so that the fresh air flow can enter the mixed air chamber shell 23 from the fresh air mixed air outlet 27 and mix with the heat exchange air flow entering the mixed air chamber shell 23. In this way, since the mixed air outlet 25 is in a closed state or the opening angle of the mixed air outlet 25 is reduced, it can be ensured that the heat exchange air flow and the fresh air flow entering the mixed air chamber shell 23 are fully mixed.

[0046] Furthermore, the mixed air temperature sensor 60 within the air mixing chamber housing 23 detects the mixed air temperature within the air mixing chamber housing 23. When the difference between the detected mixed air temperature and the user-set temperature is less than a preset threshold, it indicates that the mixed air flow has met the indoor temperature condition. At this time, the mixed air outlet 25 is controlled to open, allowing the mixed air flow to be released into the room through the mixed air outlet 25. In this way, the mixed air flow that meets the indoor temperature requirement can be released into the room, meeting human comfort requirements and solving the problem of large indoor temperature fluctuations caused by insufficient cooling or heating between the fresh air and the heated air within the air mixing chamber housing 23.

[0047] Therefore, after the air conditioner 100 is started, the user can instruct the air conditioner 100 to turn on the fresh air mixing function, so that the controller controls the heat exchange fan 13 to start running, and the fresh air fan 22 to stop running, and closes the mixed air outlet 25 or reduces the opening angle of the mixed air outlet 25. Under this condition, the mixed air inlet 24 is opened to allow part of the heat exchange air flow to enter the mixed air chamber shell 23, and then the fresh air fan 22 is controlled to restart running so that the fresh air flow and the heat exchange air flow are fully mixed in the mixed air chamber shell 23. When the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the user-set temperature value is less than the preset threshold, the mixed air outlet 25 is opened, so that the fresh air that meets the temperature requirements can be released into the room, thereby improving the freshness of the indoor air while achieving the effect of constant temperature fresh air, avoiding the problem of large indoor temperature fluctuations, thereby effectively improving the user's comfort.

[0048] Furthermore, the controller is specifically configured to control the heat exchange fan 13 to start running, and the fresh air fan 22 to stop running, open the mixed air inlet 24, so that part of the heat exchange air flow enters the interior of the mixed air chamber shell 23 from the heat exchange air outlet 14 through the mixed air inlet 24, close the mixed air outlet 25 or reduce the opening angle of the mixed air outlet 25 to limit the air outlet volume of the mixed air outlet 25; and after time T1, control the fresh air fan 22 to start running again, so that the fresh air flow enters the mixed air chamber shell 23 from the fresh air mixed air outlet 27 and mixes with the heat exchange air flow contained in the mixed air chamber shell 23, T1>0.

[0049] That is to say, after the heat exchange airflow enters the air mixing chamber shell 23, after time T1, the controller controls the fresh air fan 22 to start again, so that the fresh air and the heat exchange air are fully mixed in the air mixing chamber shell 23. In this way, a certain amount of heat exchange airflow can first enter the air mixing chamber shell 23, so that the heat exchange air in the air mixing chamber shell 23 reaches a reasonable space share. Then, after time T1, the fresh air fan 22 is turned on, so that the generated fresh air flow enters the air mixing chamber shell 23 from the fresh air mixed air outlet 27 of the fresh air volute 21, and is fully mixed with a certain proportion of heat exchange air in the air mixing chamber shell 23. In this way, the mixing ratio between the fresh air and the heat exchange air can be well controlled to achieve a good constant temperature effect on the fresh air.

[0050] If the heat exchange fan 13 and the fresh air fan 22 are turned on at the same time, although the heat exchange air can enter the mixed air chamber shell 23 from the mixed air inlet 24, and the fresh air can enter the mixed air chamber shell 23 from the fresh air mixed air outlet 27 of the fresh air volute 21, the proportion of fresh air and heat exchange air in the mixed air chamber shell 23 cannot be well controlled, which may cause the proportion of fresh air in the mixed air chamber shell 23 to be greater than the proportion of heat exchange air in the mixed air chamber shell 23, thereby affecting the effect of constant temperature fresh air and failing to effectively reduce the difference between the fresh air temperature and the indoor temperature.

[0051] Furthermore, the interval between the entry of the heat exchange airflow into the air mixing chamber 23 and the activation of the fresh air blower 22 can be set within 4 to 6 seconds, so that the fresh air and the heat exchange air form a reasonable ratio within the air mixing chamber 23, thereby allowing the fresh air and the heat exchange air to be fully mixed, achieving a good constant-temperature fresh air effect. If the interval is too short, the amount of heat exchange air entering the air mixing chamber 23 may be too small, and the difference between the fresh air temperature and the indoor temperature may not be effectively reduced. Conversely, if the interval is too long, the amount of heat exchange air entering the air mixing chamber 23 may be too large. Although the effect of constant-temperature fresh air can be achieved, the amount of fresh air discharged will be too small, and the indoor air purification effect may not be effectively achieved.

[0052] Therefore, after the heated air enters the air mixing chamber 23, the fresh air fan 22 is activated after time T1 has passed. This allows the fresh air and heated air to be fully mixed within the air mixing chamber 23, effectively maintaining a constant temperature for the fresh air and alleviating the problem of large indoor temperature fluctuations. Of course, the aforementioned interval can be designed based on the rotational speeds of the heat exchange fan 13 and the fresh air fan 22, as well as other relevant factors such as the opening area of ​​the mixed air inlet 24 and the mixed air outlet 25, to ensure that the fresh air and heated air are fully mixed within the air mixing chamber 23, achieving a constant temperature for the fresh air while ensuring a good fresh air purification effect. That is, time T1 is not specifically limited.

[0053] Furthermore, the controller is specifically configured to control the mixed air outlet 25 to open when it is determined that the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the temperature value set by the user is less than a preset threshold; and when the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the temperature value set by the user is greater than the preset threshold, control the mixed air outlet 25 to close or reduce the opening angle to limit the air outlet of the mixed air outlet 25.

[0054] In this way, when the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the temperature value set by the user is less than the preset threshold value, the mixed air outlet 25 is controlled to open, so that the mixed air flow that meets the temperature conditions is quickly released into the room. After the mixed air flow is released for a certain period of time, when the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the temperature value set by the user is greater than the preset threshold value, it means that the mixed air flow at this time is greatly different from the indoor temperature, which is likely to cause indoor temperature fluctuation problems. At this time, the mixed air outlet 25 is controlled to close or the opening angle of the mixed air outlet 25 is reduced, so as to limit the air output of the mixed air outlet 25.

[0055] Furthermore, the controller is specifically configured to control the heat exchange fan 13 to start running and the fresh air fan 22 to stop running after the mixed air outlet 25 is switched from open to closed or the opening angle is reduced, and after a time T2 has passed, open the mixed air inlet 24 to allow part of the heat exchange air flow to enter the interior of the mixed air chamber shell 23 from the heat exchange air outlet 14 through the mixed air inlet 24, and close or reduce the opening angle of the mixed air outlet 25; after the heat exchange fan 13 starts running, control the fresh air fan 22 to start running again to allow the fresh air flow to enter the mixed air chamber shell 23 from the fresh air mixed air outlet 27 and mix with the heat exchange air flow contained in the mixed air chamber shell 23; when the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the user-set temperature value is less than a preset threshold value, control the mixed air outlet 25 to open to increase the air outlet volume of the mixed air outlet 25.

[0056] That is to say, after the mixed air outlet 25 is opened, the mixed air flow that meets the indoor temperature is released into the room from the mixed air outlet 25. After being released for a certain period of time, since the mixed air outlet 25 of the mixed air chamber shell 23 is in the open state, the mixed air chamber shell 23 is not closed, so the fresh air flow and the heat exchange air flow entering the mixed air chamber shell 23 cannot be fully mixed, so that the temperature of the mixed air flow cannot meet the indoor temperature condition, that is, when the difference between the detected mixed air temperature value and the user-set temperature value is greater than the preset threshold, the mixed air outlet 25 is controlled to be closed or the opening angle is reduced. In this way, after the mixed air outlet 25 is closed or the opening angle is reduced, it is equivalent to completing a fresh air mixed air outlet cycle, that is, "heat exchange air flow enters the mixed air chamber shell 23-fresh air flow enters the mixed air chamber shell 23 and mixes with the heat exchange air flow -Open the mixed air outlet 25-Close the mixed air outlet 25", then after time T2, the next cycle is re-entered, the controller controls the heat exchange fan 13 to start running again, and the fresh air fan 22 to stop running again, close or reduce the mixed air outlet 25, open the mixed air inlet 24, so that part of the heat exchange air flow enters the interior of the mixed air chamber shell 23 from the heat exchange air outlet 14 through the mixed air inlet 24; then the fresh air fan 22 is controlled to start running again, so that the fresh air flow enters the mixed air chamber shell 23 from the fresh air mixed air outlet 27, and mixes with the heat exchange air flow contained in the mixed air chamber shell 23; when the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the user-set temperature value is less than the preset threshold value, the mixed air outlet 25 is opened to increase the air output of the mixed air outlet 25.

[0057] In this way, the interval T2 (T2>0) between the previous air outlet cycle and the next air outlet cycle makes the fresh air mixing intermittent rather than continuous. On the one hand, the fresh air can be released into the room only when the mixed air temperature value with the heat exchange air flow reaches the requirement, which can well ensure the outlet temperature quality of the fresh air mixing. On the other hand, the mixed air flow that meets the release conditions can be continuously released into the room, while improving the freshness of the indoor air, achieving the effect of constant temperature fresh air, avoiding the problem of large indoor temperature fluctuations, and thus effectively improving the user's comfort. Among them, in the continuous cycle, the controller controls the first air mixing plate 40 to rotate until the mixed air inlet 24 can be kept in the open state, and controls the heat exchange fan 13 to be in normal operation. It can reduce the repeated rotation of the first air mixing plate 40 and the repeated start-up of the heat exchange fan 13, and at the same time ensure that the cooling or heating mode is always running.

[0058] like Figure 2 and Figure 3 As shown, the air conditioner 100 further includes a first air mixing plate 40, which is rotatably connected to the air mixing inlet 24. The rotation of the first air mixing plate 40 controls the flow of a portion of the heat exchange airflow flowing out of the heat exchange air outlet 14 into the air mixing chamber housing 23. Thus, the rotation of the first air mixing plate 40 can open or close the air mixing inlet 24, allowing the heat exchange airflow to selectively enter the air mixing chamber housing 23 from the air mixing inlet 24, thereby realizing the heat exchange air outlet mode and / or the fresh air mixed air outlet mode of the air conditioner 100.

[0059] Furthermore, the housing 10 further includes a second air mixing plate 30, which is rotatably connected to the air mixing outlet 25. The rotation of the second air mixing plate 30 controls the flow of fresh air and / or heat exchange air from the air mixing chamber housing 23 out of the air mixing outlet 25. Thus, the rotation of the second air mixing plate 30 can open or close the air mixing outlet 25, so that the fresh air or heat exchange air, or a mixed air flow of the fresh air and heat exchange air, from the air mixing chamber housing 23 is selectively blown out of the housing 10 through the air mixing outlet 25.

[0060] In addition, the air conditioner 100 further includes: a first driving member and a second driving member, the first driving member being transmission-connected to the first air mixing plate 40, and the first driving member driving the first air mixing plate 40 to rotate so that the mixed air inlet 24 is opened or closed. And, the second driving member being transmission-connected to the second air mixing plate 30, and the second driving member driving the second air mixing plate 30 to rotate so that the mixed air outlet 25 is opened or closed. In this way, the first driving member drives the first air mixing plate 40 to rotate so that the mixed air inlet 24 is in an open or closed state, and at the same time, the second driving member drives the second air mixing plate 30 to rotate so that the mixed air outlet 25 is in an open or closed state. Wherein, the first driving member and / or the second driving member can be a driving motor, and the driving motor is electrically connected to the controller so that the controller instructs the first driving member and / or the second driving member to rotate to achieve different air outlet modes.

[0061] The air conditioner 100 further includes a third drive member and a heat exchange air deflector 15. The heat exchange air deflector 15 is disposed on the housing 10 and is in transmission connection with the third drive member. The third drive member drives the heat exchange air deflector 15 to rotate, thereby opening or closing the heat exchange air outlet 14. Thus, the heat exchange air deflector 15 is disposed at the heat exchange air outlet 14 and is fixed to the housing 10. The heat exchange air deflector 15 is driven by the third drive member to rotate, thereby opening or closing the heat exchange air outlet 14.

[0062] In addition, the air mixing chamber housing 23 extends in the longitudinal direction of the air conditioner 100; and / or the air mixing inlet 24 is configured in an elongated shape, and the length of the air mixing inlet 24 in the longitudinal direction of the air conditioner 100 is less than the width of the heat exchanger 12 in the longitudinal direction of the air conditioner 100; and / or the air mixing outlet 25 is configured in an elongated shape, and the length of the air mixing outlet 25 in the longitudinal direction of the air conditioner 100 is less than the length of the heat exchanger 12 in the longitudinal direction of the air conditioner 100. In this configuration, the air mixing chamber housing 23 is configured in an elongated shape to match the heat exchanger 12 or the heat exchange duct 11. This allows the heated air in the heat exchange duct 11 to evenly enter the air mixing chamber housing 23 and be fully mixed with the fresh air entering the air mixing chamber housing 23, thereby improving the mixing efficiency of the fresh air and the heated air.

[0063] In addition, the mixed air inlet 24 is constructed into a long strip shape and is reasonably set up. Since the mixed air chamber shell 23 is extended in the length direction of the air conditioner 100, the long strip mixed air inlet 24 can be adapted to the mixed air chamber shell 23, so that the heat exchange air is blown from the mixed air inlet 24 to the mixed air chamber shell 23, so that the wind resistance of the heat exchange air entering the mixed air chamber shell 23 is small and the heat exchange air volume is large. After the mixed air inlet 24 is opened, a large amount of heat exchange air can quickly enter the mixed air chamber shell 23. Specifically, setting the length of the mixed air inlet 24 shorter than the length of the heat exchanger 12 can effectively meet the requirement of a certain amount of heat exchange air entering the mixed air chamber housing 23 through the mixed air inlet 24. If the length of the mixed air inlet 24 is longer than the length of the heat exchanger 12, on the one hand, more heat exchange air will easily enter the mixed air chamber housing 23, resulting in a smaller amount of heat exchange air blown out from the heat exchange air outlet 14, thus changing the air conditioner 100's primary air outlet mode of heat exchange air. On the other hand, a larger mixed air inlet 24 causes unnecessary waste and is not conducive to forming a certain pressure difference between the mixed air chamber housing 23 and the heat exchange air duct 11.

[0064] Furthermore, the mixed air outlet 25 is constructed in an elongated strip shape, with its length being shorter than that of the heat exchanger 12. This configuration allows the elongated shape of the mixed air outlet 25 to fit snugly within the air mixing chamber housing 23, allowing fresh air to be fully mixed with the heat exchanged air within the air mixing chamber housing 23 before being evenly released from the mixed air outlet 25 into the room. Furthermore, the elongated shape of the mixed air outlet 25 effectively increases the horizontal air delivery range of the fresh air, facilitating its rapid diffusion throughout the room. Furthermore, the user can intuitively see the mixed air outlet 25, effectively enhancing the visualization of the fresh air. This provides the air conditioner 100 with a distinct and differentiated appearance when the fresh air mode is engaged. Furthermore, while ensuring the effective delivery of fresh air, the length of the mixed air outlet 25 is shorter than that of the heat exchanger 12. This arrangement is reasonable and consistent with the placement of the mixed air outlet 25 on the fresh air volute 21. Furthermore, it allows for sufficient mixing of the fresh air and the heated air, reducing the difference between the fresh air temperature and the indoor temperature. If the length of the mixed air outlet 25 were longer than the length of the heat exchange duct 11, the fresh air temperature would not be effectively regulated after mixing with the heated air. In other words, the air conditioner 100 forms an air delivery pattern that primarily utilizes the heat exchange duct 11, supplemented by the mixed air outlet 25.

[0065] In addition, a main fresh air outlet is provided at the lower end of the fresh air volute 21, and one end of the air mixing chamber housing 23 is connected to the main fresh air outlet. In other words, the fresh air is gathered and accelerated in the fresh air volute 21, and then blown from the main fresh air outlet on the fresh air volute 21 to the air mixing chamber housing 23, and finally blown out from the mixed air outlet 25. This prevents the fresh air from passing through other outlet ducts, thus preventing fresh air attenuation. In other words, the fresh air output volume and speed are greater.

[0066] Further, the air conditioner 100 further comprises a connecting pipe 50, one end of the connecting pipe 50 is communicated with the fresh air volute 21, and the other end is communicated with the mixed air cavity 23, and the connecting pipe 50 is arranged in a bent manner. In this way, since the shape of the fresh air module 20 is in a volute structure, the connecting pipe 50 is designed in a bent structure, so that the mixed air cavity 23 can be well connected with the fresh air module 20 through the connecting pipe 50. In this way, the outdoor air enters the fresh air module 20, and after being filtered by the fresh air module 20, the fresh air is blown out from the air outlet 2 in sequence through the connecting pipe 50 and the mixed air cavity 23. The cross-sectional area of the end of the connecting pipe 50 communicated with the fresh air volute 21 is smaller than the cross-sectional area of the end of the connecting pipe 50 communicated with the mixed air cavity 23. That is to say, the connecting pipe 50 is gradually expanded in the connection direction from the fresh air volute 21 to the mixed air cavity 23. In this way, the fresh air generated in the fresh air volute 21 can reduce the airflow rate when passing through the connecting pipe 50, so that the fresh air can slowly enter the mixed air cavity 23 and fully mix with the heat exchange air, and finally uniformly blown out from the mixed air outlet 25, so as to mix the relatively uniform fresh air with the heat exchange air, so as to improve the temperature of the fresh air.

[0067] According to the control method of the air conditioner 100 according to the second aspect of the present application, after the air conditioner 100 is started, the fresh air function of the air conditioner 100 is opened, the heat exchange fan 13 is started to run, and the fresh air fan 22 is stopped to run, the mixed air inlet 24 is opened, so that part of the heat exchange airflow enters the inside of the mixed air cavity 23 from the heat exchange air outlet 14 through the mixed air inlet 24, and the mixed air outlet 25 is closed or the opening angle is reduced, so as to limit the air outlet amount of the mixed air outlet 25; after the heat exchange fan 13 is started to run, the fresh air fan 22 is started to run again, the fresh air airflow enters the mixed air cavity 23 from the fresh air mixed air outlet 27, and mixes with the heat exchange airflow contained in the mixed air cavity 23; when the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the user set temperature value is less than the preset threshold value, the mixed air outlet 25 is opened, so as to increase the air outlet amount of the mixed air outlet 25.

[0068] That is to say, when the air conditioner 100 is running, the user instructs the air conditioner 100 to run the fresh air mixing function, then the heat exchange fan 13 starts running, and the fresh air fan 22 stops running, and the mixed air inlet 24 is opened, so that a heat exchange airflow is generated under the rotation of the heat exchange fan 13. At this time, the air pressure in the mixed air chamber shell 23 is lower than the air pressure in the heat exchange air duct 11, so that the heat exchange airflow can quickly enter the mixed air chamber shell 23 through the mixed air inlet 24. It should be noted that during this process, the mixed air outlet 25 is in a closed state or the opening angle of the mixed air outlet 25 is reduced, which can limit the air output of the mixed air outlet 25. Then, after the heat exchange fan 13 starts running, the fresh air fan 22 starts running again, so that the fresh air flow can enter the air mixing chamber shell 23 from the fresh air mixed air outlet 27 and mix with the heat exchange air flow entering the air mixing chamber shell 23. In this way, since the mixed air outlet 25 is in a closed state or the opening angle of the mixed air outlet 25 is reduced, it can be ensured that the heat exchange air flow and the fresh air flow entering the air mixing chamber shell 23 are fully mixed. In addition, the mixed air temperature sensor 60 in the air mixing chamber shell 23 detects the mixed air temperature in the air mixing chamber shell 23. When the difference between the detected mixed air temperature value and the user-set temperature value is less than a preset threshold, it indicates that the mixed air flow has met the indoor temperature condition. At this time, the mixed air outlet 25 is controlled to open, so that the mixed air flow is released from the mixed air outlet 25 into the room. In this way, the mixed air flow that meets the indoor temperature requirements can be released into the room to meet the human comfort requirements, and solve the problem of large indoor temperature fluctuations caused by insufficient cooling or heating of fresh air and hot air in the mixed air chamber shell 23.

[0069] Furthermore, when the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the temperature value set by the user is less than a preset threshold value, the mixed air outlet 25 is opened to increase the air outlet volume of the mixed air outlet 25, and when the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the temperature value set by the user is greater than the preset threshold value, the mixed air outlet 25 is closed or the opening angle is reduced to limit the air outlet volume of the mixed air outlet 25.

[0070] That is to say, when the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the temperature value set by the user is less than the preset threshold value, the mixed air outlet 25 is controlled to open, so that the mixed air flow that meets the temperature conditions is quickly released into the room. After the mixed air flow is released for a certain period of time, since the mixed air outlet 25 of the mixed air chamber shell 23 is in an open state, the mixed air chamber shell 23 is not closed, so that the fresh air flow and the heat exchange air flow entering the mixed air chamber shell 23 are not fully mixed, so that the temperature of the mixed air flow cannot meet the indoor temperature conditions. When the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the temperature value set by the user is greater than the preset threshold value, it means that the mixed air flow at this time is greatly different from the indoor temperature, which is likely to cause the indoor temperature fluctuation problem. At this time, the mixed air outlet 25 is closed or the opening angle of the mixed air outlet 25 is reduced, thereby limiting the air outlet of the mixed air outlet 25, that is, completing a fresh air mixed air outlet cycle.

[0071] Furthermore, after the air mixing outlet 25 is switched from open to closed or the opening angle is reduced, after a time T2 has passed, the air conditioner 100 operates according to the above-mentioned control method of the air conditioner 100, T2>0.

[0072] That is to say, after the mixed air outlet 25 is opened, the mixed air flow that meets the indoor temperature is released into the room from the mixed air outlet 25. After being released for a certain period of time, since the mixed air outlet 25 of the mixed air chamber shell 23 is in the open state, the mixed air chamber shell 23 is not closed, so the fresh air flow and the heat exchange air flow entering the mixed air chamber shell 23 cannot be fully mixed, so that the temperature of the mixed air flow cannot meet the indoor temperature condition, that is, when the difference between the detected mixed air temperature value and the user-set temperature value is greater than the preset threshold, the mixed air outlet 25 is controlled to be closed or the opening angle is reduced. In this way, after the mixed air outlet 25 is closed or the opening angle is reduced, it is equivalent to completing a fresh air mixed air outlet cycle, that is, "heat exchange air flow enters the mixed air chamber shell 23-fresh air flow enters the mixed air chamber shell 23 and mixes with the heat exchange air flow -Open the mixed air outlet 25-Close the mixed air outlet 25", then after time T2, the next cycle is re-entered, the controller controls the heat exchange fan 13 to start running again, and the fresh air fan 22 to stop running again, close or reduce the mixed air outlet 25, open the mixed air inlet 24, so that part of the heat exchange air flow enters the interior of the mixed air chamber shell 23 from the heat exchange air outlet 14 through the mixed air inlet 24; then the fresh air fan 22 is controlled to start running again, so that the fresh air flow enters the mixed air chamber shell 23 from the fresh air mixed air outlet 27, and mixes with the heat exchange air flow contained in the mixed air chamber shell 23; when the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the user-set temperature value is less than the preset threshold value, the mixed air outlet 25 is opened to increase the air output of the mixed air outlet 25. In this way, the interval T2 between the previous air outlet cycle and the next air outlet cycle makes the fresh air mixing intermittent rather than continuous. On the one hand, the fresh air can be released into the room only when the mixed air temperature value with the heat exchange air flow reaches the requirement, which can well ensure the outlet temperature quality of the fresh air mixing. On the other hand, the mixed air flow that meets the release conditions can be continuously released into the room, while improving the freshness of the indoor air, achieving the effect of constant temperature fresh air, avoiding the problem of large indoor temperature fluctuations, and thus effectively improving the user's comfort. Among them, in the continuous cycle, the controller controls the first air mixing plate 40 to rotate until the mixed air inlet 24 can be kept in the open state, and controls the heat exchange fan 13 to be in a normal operating state. It can reduce the repeated rotation of the first air mixing plate 40 and the repeated start-up of the heat exchange fan 13, and at the same time ensure that the cooling or heating mode is always running.

[0073] Therefore, after the air conditioner 100 is started, the user can instruct the air conditioner 100 to turn on the fresh air mixing function. Then, the controller controls the heat exchange fan 13 to start running, and the fresh air fan 22 to stop running, and controls the second air mixing plate 30 to close the mixed air outlet 25 or open the mixed air outlet 25 at a smaller angle. Under this condition, the controller controls the first air mixing plate 40 to open the mixed air inlet 24 to allow the heat exchange air flow to enter the mixed air chamber shell 23, and then controls the fresh air fan 22 to restart running, so that the fresh air flow and the heat exchange air flow are fully mixed in the mixed air chamber shell 23. When the difference between the mixed air temperature value detected by the mixed air temperature sensor 60 and the user-set temperature value is less than the preset threshold, the mixed air outlet 25 is opened, so that the fresh air that meets the temperature requirements can be released into the room, thereby improving the freshness of the indoor air while achieving the effect of constant temperature fresh air, avoiding the problem of large indoor temperature fluctuations, thereby effectively improving the user's comfort. Then, when the mixed air flow is released for a certain period of time, the mixed air outlet 25 is closed, that is, a cycle of fresh air mixed air outlet is completed, and then the next cycle of fresh air mixed air outlet is entered. This is repeated continuously, so that the fresh air mixed air that meets the indoor temperature can be continuously released into the room, making the indoor air fresh and healthy.

[0074] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0075] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0076] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An air conditioner, comprising: The shell is provided with a heat exchange air inlet and a heat exchange air outlet; a heat exchanger, disposed inside the shell; A heat exchange fan is arranged inside the housing, and the heat exchange airflow formed by the heat exchange of the heat exchanger is output outward from the heat exchange air outlet under the operation drive of the heat exchange fan; A fresh air volute is arranged in the shell, with a fresh air mixed air inlet at one end and a fresh air mixed air outlet at the other end; A fresh air fan is provided inside the fresh air volute, introducing outdoor air into the fresh air volute through the fresh air mixing air inlet, and outputting fresh air outward through the fresh air mixing air outlet; It is characterized by further comprising: An air mixing chamber shell connected to the housing and arranged on the air mixing chamber shell adjacent to the heat exchange air outlet; At least one end of the air mixing chamber shell is connected to the fresh air mixing outlet, so that part of the airflow delivered by the fresh air mixing outlet enters the interior of the air mixing chamber shell; An air mixing inlet and an air mixing outlet are provided on the air mixing chamber shell, wherein the air mixing inlet is provided on a side of the air mixing chamber shell adjacent to the heat exchange outlet, and the air mixing outlet is provided on a side of the air mixing chamber shell away from the heat exchange outlet; a mixed air temperature sensor, disposed inside the air mixing chamber housing, for detecting the temperature of the air flow in the air mixing chamber housing; a controller configured to control the heat exchange fan to start and the fresh air fan to stop, open the mixed air inlet to allow part of the heat exchange air flow to enter the interior of the mixed air chamber shell from the heat exchange air outlet through the mixed air inlet, and reduce the opening angle of the mixed air outlet to limit the air output of the mixed air outlet; After the heat exchange fan is started, the fresh air fan is controlled to restart so that the fresh air flows from the fresh air mixing outlet into the air mixing chamber shell and is mixed with the heat exchange air contained in the air mixing chamber shell; When the difference between the mixed air temperature value detected by the mixed air temperature sensor and the temperature value set by the user is less than a preset threshold, the mixed air outlet is controlled to open to increase the air volume of the mixed air outlet.

2. The air conditioner according to claim 1, characterized in that The controller is specifically configured to control the heat exchange fan to start and the fresh air fan to stop, open the mixed air inlet, so that part of the heat exchange air flow enters the interior of the mixed air chamber shell from the heat exchange air outlet through the mixed air inlet, and reduce the opening angle of the mixed air outlet; After time T1, the fresh air blower is controlled to restart, so that the fresh air flow enters the air mixing cavity shell from the fresh air mixing outlet and mixes with the heat exchange air flow contained in the air mixing cavity shell, T1>0.

3. The air conditioner according to claim 1, characterized in that The controller is specifically configured to control the mixed air outlet to open when it is determined that the difference between the mixed air temperature value detected by the mixed air temperature sensor and the user-set temperature value is less than a preset threshold; When the difference between the mixed air temperature value detected by the mixed air temperature sensor and the temperature value set by the user is greater than a preset threshold, the opening angle of the mixed air outlet is reduced to limit the air output of the mixed air outlet.

4. The air conditioner according to claim 3, characterized in that The controller is specifically configured to, after the mixed air outlet is switched from open to reducing the opening angle of the mixed air outlet, control the heat exchange fan to start and the fresh air fan to stop after a time T2 has passed, open the mixed air inlet, so that part of the heat exchange air flow enters the interior of the mixed air chamber shell from the heat exchange outlet through the mixed air inlet, and reduce the opening angle of the mixed air outlet; After the heat exchange fan is started, the fresh air fan is controlled to restart so that the fresh air flows from the fresh air mixing outlet into the air mixing chamber shell and is mixed with the heat exchange air contained in the air mixing chamber shell; When the difference between the mixed air temperature value detected by the mixed air temperature sensor and the temperature value set by the user is less than a preset threshold, the mixed air outlet is controlled to open to increase the air volume of the mixed air outlet.

5. The air conditioner according to claim 1, characterized in that Also includes: a first air mixing plate rotatably connected to the air mixing inlet, and the rotation of the first air mixing plate is used to control the flow of a portion of the heat exchange airflow flowing out of the heat exchange air outlet into the air mixing chamber shell; as well as, The second air mixing plate is rotatably connected to the air mixing outlet. The rotation of the second air mixing plate can realize on-off control of the fresh air flow and / or heat exchange air flow in the air mixing cavity shell flowing out from the air mixing outlet.

6. The air conditioner according to claim 5, characterized in that Also includes: a first driving member, which is in transmission connection with the first air mixing plate, and the first driving member drives the first air mixing plate to rotate so as to open or close the air mixing inlet; as well as, The second driving member is in transmission connection with the second air mixing plate, and the second driving member drives the second air mixing plate to rotate so as to open or close the air mixing outlet.

7. The air conditioner according to claim 1, characterized in that The air mixing chamber shell extends in the longitudinal direction of the air conditioner; and / or, The mixed air inlet is configured in an elongated shape, and the length of the mixed air inlet in the longitudinal direction of the air conditioner is smaller than the length of the heat exchange duct in the longitudinal direction of the air conditioner; and / or The mixed air outlet is configured in a long strip shape, and the length of the mixed air outlet in the longitudinal direction of the air conditioner is smaller than the length of the heat exchange duct in the longitudinal direction of the air conditioner.

8. A method for controlling an air conditioner, using the air conditioner according to any one of claims 1 to 7, characterized in that: include: After the air conditioner is started, the fresh air mixing function of the air conditioner can be turned on. The heat exchange fan is started and the fresh air fan is stopped, the mixed air inlet is opened, part of the heat exchange air flow enters the interior of the mixed air chamber shell from the heat exchange air outlet through the mixed air inlet, and the opening angle of the mixed air outlet is reduced to limit the air output of the mixed air outlet; After the heat exchange fan is started, the fresh air fan is started again, and the fresh air flows into the air mixing chamber shell from the fresh air mixing outlet and is mixed with the heat exchange air flow contained in the air mixing chamber shell; When the difference between the mixed air temperature value detected by the mixed air temperature sensor and the temperature value set by the user is less than a preset threshold, the mixed air outlet is opened to increase the air volume of the mixed air outlet.

9. The air conditioner control method according to claim 8, characterized in that: When the difference between the mixed air temperature value detected by the mixed air temperature sensor and the temperature value set by the user is less than a preset threshold, the mixed air outlet is opened to increase the air volume of the mixed air outlet; When the difference between the mixed air temperature value detected by the mixed air temperature sensor and the temperature value set by the user is greater than a preset threshold, the opening angle of the mixed air outlet is reduced to limit the air output of the mixed air outlet.

10. The air conditioner control method according to claim 9, characterized in that: After the mixed air outlet is switched from being open to having its opening angle reduced, after a time T2 has passed, the air conditioner is operated again according to the air conditioner control method of claim 9, where T2>0.

11. An air conditioner comprising: The shell is provided with a heat exchange air inlet and a heat exchange air outlet; a heat exchanger, disposed inside the shell; A heat exchange fan is arranged inside the housing, and the heat exchange airflow formed by the heat exchange of the heat exchanger is output outward from the heat exchange air outlet under the operation drive of the heat exchange fan; A fresh air volute is arranged in the shell, with a fresh air mixed air inlet at one end and a fresh air mixed air outlet at the other end; A fresh air fan is provided inside the fresh air volute, introducing outdoor air into the fresh air volute through the fresh air mixing air inlet, and outputting fresh air outward through the fresh air mixing air outlet; It is characterized by further comprising: An air mixing chamber shell connected to the housing and arranged on the air mixing chamber shell adjacent to the heat exchange air outlet; At least one end of the air mixing chamber shell is connected to the fresh air mixing outlet, so that part of the airflow delivered by the fresh air mixing outlet enters the interior of the air mixing chamber shell; An air mixing inlet and an air mixing outlet are provided on the air mixing chamber shell, wherein the air mixing inlet is provided on a side of the air mixing chamber shell adjacent to the heat exchange outlet, and the air mixing outlet is provided on a side of the air mixing chamber shell away from the heat exchange outlet; a mixed air temperature sensor, disposed inside the air mixing chamber housing, for detecting the temperature of the air flow in the air mixing chamber housing; a controller configured to control the heat exchange fan to start and run and the fresh air fan to stop running, open the mixed air inlet to allow part of the heat exchange air flow to enter the interior of the air mixing chamber shell from the heat exchange air outlet through the mixed air inlet, and close the mixed air outlet to limit the air output of the mixed air outlet; After the heat exchange fan is started, the fresh air fan is controlled to restart so that the fresh air flows from the fresh air mixing outlet into the air mixing chamber shell and is mixed with the heat exchange air contained in the air mixing chamber shell; When the difference between the mixed air temperature value detected by the mixed air temperature sensor and the temperature value set by the user is less than a preset threshold, the mixed air outlet is controlled to open to increase the air volume of the mixed air outlet.

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