Control method of air conditioner

Abstract

The present invention relates to a control method for an air conditioner, the control method for the air conditioner comprising: when fresh air is required, obtaining the outdoor fresh air temperature. According to the difference between the outdoor fresh air temperature and the indoor ambient temperature, determining: whether to open the fresh air inlet and the first indoor air inlet at the same time so that the fresh air and the indoor air enter the mixed air duct at the same time, or to open only the fresh air inlet so that only the fresh air enters the mixed air duct. And / or, whether to connect the mixed air duct with the second air outlet, or to connect the mixed air duct with the third air outlet. A control method for an air conditioner of the present invention can ensure that the air outlet is comfortable after the air conditioner introduces fresh air, and can also ensure that the newly introduced fresh air will not significantly affect the indoor ambient temperature, thereby improving the user experience when using the air conditioner to introduce fresh air.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a control method of an air conditioner. Background Art

[0002] The control method of the fresh air system of the air conditioner in the prior art is relatively simple and not intelligent enough. Especially when the outdoor environment is very hot / cold, the introduced fresh air is also hot / cold, which can easily cause a large fluctuation in the indoor ambient temperature, thereby affecting the user experience. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide a method for controlling an air conditioner that overcomes the above problems or at least partially solves the above problems, and the fresh air introduced will not cause large fluctuations in indoor ambient temperature, thereby improving user experience.

[0004] Specifically, the present invention provides a control method for an air conditioner, wherein the air conditioner comprises an air conditioner indoor unit, and the air conditioner indoor unit comprises a shell; the shell is provided with a fresh air inlet, a first indoor air inlet, a second indoor air inlet, a heat exchange air outlet, a second air outlet and a third air outlet, the heat exchange air outlet and the second air outlet are both in a strip shape; the heat exchange air outlet is connected to the second indoor air inlet; an air mixing duct and an evaporator are arranged in the shell; wherein the control method for the air conditioner comprises:

[0005] When fresh air is needed, obtain the outdoor fresh air temperature;

[0006] According to the difference between the outdoor fresh air temperature and the indoor ambient temperature, determine:

[0007] whether to open the fresh air inlet and the first indoor air inlet at the same time so that the fresh air and the indoor air enter the mixed air duct at the same time, or to open only the fresh air inlet so that only the fresh air enters the mixed air duct; and / or,

[0008] Either the mixed air duct is connected with the second air outlet so that the air in the mixed air duct is mixed with the heat exchange air flowing out of the heat exchange air outlet after flowing out through the second air outlet, and then when the fresh air and the indoor air enter the mixed air duct at the same time, the fresh air is first mixed with the indoor air, and the mixed air is mixed with the indoor air after the heat exchange; or the mixed air duct is connected with the third air outlet so that after the air in the mixed air duct flows out through the third air outlet, at least part of the air from the mixed air duct enters the second indoor air inlet, and then when the fresh air and the indoor air enter the mixed air duct at the same time, the fresh air is first mixed with the indoor air, and the mixed air is again mixed with the indoor air entering the second indoor air inlet, and then heat exchange is performed with the evaporator, and finally flows out of the heat exchange air outlet.

[0009] Optionally, when the difference between the outdoor fresh air temperature and the indoor ambient temperature is less than or equal to a first preset temperature difference, only the fresh air inlet is opened, and the mixed air duct is connected to the second air outlet.

[0010] Optionally, when the difference between the outdoor fresh air temperature and the indoor ambient temperature is greater than a first preset temperature difference and less than or equal to a second preset temperature difference, the fresh air inlet and the first indoor air inlet are opened at the same time, and the mixed air duct is connected to the second air outlet;

[0011] The second preset temperature difference is greater than the first preset temperature difference.

[0012] Optionally, when the difference between the outdoor fresh air temperature and the indoor ambient temperature is greater than a second preset temperature difference, the fresh air inlet and the first indoor air inlet are opened at the same time, and the mixed air duct is connected to the third air outlet.

[0013] Optionally, the air conditioner control method further includes:

[0014] The maximum distance between the indoor space and the air conditioner is obtained, and the wind speed of the heat exchange air outlet is determined according to the maximum distance, so that among at least two different maximum distances, the larger maximum distance corresponds to a larger wind speed.

[0015] Optionally, when the maximum distance is less than or equal to a first preset distance, the wind speed of the heat exchange air outlet is a first wind speed;

[0016] When the maximum distance is greater than the first preset distance and less than or equal to the second preset distance, the wind speed of the heat exchange air outlet is the second wind speed;

[0017] When the maximum distance is greater than the second preset distance, the wind speed of the heat exchange air outlet is the third wind speed;

[0018] The second preset distance is greater than the first preset distance;

[0019] The third wind speed is greater than the second wind speed, and the second wind speed is greater than the first wind speed.

[0020] Optionally, the air conditioner control method further includes:

[0021] Get indoor carbon dioxide concentration;

[0022] When the indoor carbon dioxide concentration is greater than or equal to a preset concentration, it is determined that fresh air is required;

[0023] When the indoor carbon dioxide concentration is less than a preset concentration, the fresh air inlet and the first indoor air inlet are closed, or the fresh air inlet is closed to stop ventilation of fresh air.

[0024] Optionally, an induced draft interval is provided between the heat exchange air outlet and the second air outlet so that when the fresh air and the indoor air enter the mixed air duct at the same time, the fresh air is first mixed with the indoor air, and when flowing out through the second air outlet, the mixed air is mixed with the air from the induced draft interval and the indoor air after heat exchange.

[0025] Optionally, a first air duct and a second air duct are provided in the shell, the first air duct and the second air duct are both in the shape of vertical bars, the first air duct is connected to the heat exchange air outlet, and the second air duct is connected to the second air outlet; the second air outlet is provided on one side of the heat exchange air outlet so that the air outlet of the second air outlet is mixed with the heat exchange air of the heat exchange air outlet;

[0026] The first air duct is provided with the evaporator and the heat exchange fan, and the heat exchange fan guides the air to enter the first air duct from the second indoor air inlet, and blows the air out from the heat exchange air outlet after passing through the evaporator;

[0027] An air inlet is provided at the lower end of the second air duct, and a plurality of guide vanes arranged vertically are provided in the second air duct, each of the guide vanes extends from front to rear, and the rear end is bent downward to form a guide bending portion, and the distance between the front and rear ends of the guide vanes located higher up is greater;

[0028] The first air duct and the second air duct are arranged at intervals, so that an air induction interval penetrating the housing is formed between the first air duct and the second air duct.

[0029] Optionally, the housing comprises:

[0030] A first air outlet column, wherein the first air outlet column is in a vertical column shape, the first air duct is arranged in the first air outlet column, and the heat exchange air outlet is provided on the front side of the first air outlet column; the second indoor air inlet connected with the heat exchange air outlet is provided on the rear wall and the side wall of the first air outlet column;

[0031] a second air outlet column, wherein the second air outlet column is in a vertical column shape, the second air duct is arranged in the second air outlet column, the second air outlet is provided at the front side of the second air outlet column, and the air inlet connected to the second air outlet is provided at the lower end of the second air outlet column; the second air outlet column is arranged at a lateral side of the first air outlet column; the air induction interval is formed between the second air outlet column and the first air outlet column, so that the air in the air induction interval can be driven to flow forward by the negative pressure effect when the heat exchange air outlet and / or the second air outlet discharges air;

[0032] The first air outlet column and the second air outlet column are arranged at the top of the lower shell; the fresh air inlet, the first indoor air inlet and the third air outlet are arranged on the peripheral wall of the lower shell, and the third air outlet is arranged near the second indoor air inlet; the first indoor air inlet is provided with a first damper for opening and closing the first indoor air inlet;

[0033] A fan is arranged in the lower shell, the air mixing duct is arranged in the fan, the air inlet of the fan is connected with the fresh air inlet and the first indoor air inlet, and the air outlet of the fan is selectively connected with the air inlet or the third air outlet through a second air door; the fan is a centrifugal fan;

[0034] A functional module is arranged between the fresh air inlet, the first indoor air inlet and the air inlet of the fan; the functional module is a purification module and / or a humidification module; the air outlet of the second air outlet is purified air and / or humidified air.

[0035] A control method for an air conditioner of the present invention determines whether to ventilate fresh air only or to ventilate the mixed air of fresh air and indoor air after passing through a mixed air duct, according to the difference between the outdoor fresh air temperature and the indoor ambient temperature. For example, when the difference between the outdoor fresh air temperature and the indoor ambient temperature is not large, ventilating fresh air will not significantly affect the indoor ambient temperature, so ventilating fresh air alone can meet the customer's demand for fresh air as soon as possible. When the difference between the outdoor fresh air temperature and the indoor ambient temperature is relatively large, the temperature of the mixed air of fresh air and indoor air passing through the mixed air duct is closer to the indoor ambient temperature, and the mixed air of fresh air and indoor air passing through the mixed air duct will make the user feel comfortable. Furthermore, according to the difference between the outdoor fresh air temperature and the indoor ambient temperature, it is determined whether the air flowing out of the mixed air duct flows out from the second air outlet or the third air outlet, which can further ensure that the air outlet is comfortable when the air conditioner introduces fresh air. For example, the air flowing out of the mixing air duct can flow out of the second air outlet and mix with the heat exchange air of the heat exchange air outlet, so that the temperature of the fresh air or the mixed air of the fresh air and the indoor air can be closer to the temperature set by the customer. The air flowing out of the mixing air duct can also flow out of the third air outlet, and at least part of it can enter the second indoor air inlet again to mix with the indoor air entering the second indoor air inlet, and then pass through the evaporator to flow out of the heat exchange air outlet in the form of mixed hot air. The above control method can not only ensure that the air outlet is comfortable after the air conditioner introduces fresh air, but also ensure that the newly introduced fresh air will not significantly affect the indoor ambient temperature, thereby improving the user experience when using the air conditioner to introduce fresh air.

[0036] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0038] Figure 1 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention;

[0039] Figure 2 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention;

[0040] Figure 3 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention;

[0041] Figure 4 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention;

[0042] Figure 5 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention;

[0043] Figure 6 is a schematic cross-sectional view of an air conditioner according to an embodiment of the present invention;

[0044] Figure 7 is a schematic top view of an air conditioner according to an embodiment of the present invention;

[0045] Figure 8 is a left side schematic diagram of an air conditioner according to an embodiment of the present invention;

[0046] Fig. 9 yes Figure 7 AA schematic cross-sectional view;

[0047] Fig.10 yes Figure 6 BB schematic cross-sectional view. DETAILED DESCRIPTION

[0048] Embodiments of the present invention are described in detail below, and examples of embodiments of the present invention are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0049] The present invention provides a control method for an air conditioner. Figure 1 FIG. 1 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention. Figure 1 And refer to Figures 2 to 10 The air conditioner includes an air conditioner indoor unit, and the air conditioner indoor unit includes a shell. A fresh air inlet 34, a first indoor air inlet 33, a second indoor air inlet 12, a heat exchange air outlet 11, a second air outlet 21 and a third air outlet 36 are provided on the shell, and the heat exchange air outlet 11 and the second air outlet 21 are both in a long strip shape. The heat exchange air outlet 11 is connected to the second indoor air inlet 12. A mixed air duct and an evaporator 13 are arranged in the shell. Among them, the control method of the air conditioner includes: when fresh air is needed, obtaining the outdoor fresh air temperature. According to the difference between the outdoor fresh air temperature and the indoor ambient temperature, it is determined whether to open the fresh air inlet and the first indoor air inlet at the same time so that the fresh air and the indoor air enter the mixed air duct at the same time, or to open only the fresh air inlet so that only the fresh air enters the mixed air duct. And / or, the mixed air duct is connected to the second air outlet 21, so that the air in the mixed air duct is mixed with the heat exchange air flowing out of the heat exchange air outlet 11 after flowing out through the second air outlet 21, and then when the fresh air and the indoor air enter the mixed air duct at the same time, the fresh air is first mixed with the indoor air, and the mixed air is mixed with the indoor air after heat exchange. Or the mixed air duct is connected to the third air outlet 36, so that after the air in the mixed air duct flows out through the third air outlet 36, at least part of the air from the mixed air duct enters the second indoor air inlet 12, and then when the fresh air and the indoor air enter the mixed air duct at the same time, the fresh air is first mixed with the indoor air, and the mixed air is mixed again with the indoor air entering the second indoor air inlet 12, and then heat exchange is performed with the evaporator 13, and then flows out of the heat exchange air outlet 11.

[0050] When fresh air is needed, it is determined whether fresh air alone is to be supplied or whether fresh air and indoor air are mixed after passing through the mixed air duct according to the difference between the outdoor fresh air temperature and the indoor ambient temperature. For example, when the difference between the outdoor fresh air temperature and the indoor ambient temperature is not large, fresh air will not make the customer feel uncomfortable, so fresh air alone can meet the customer's demand for fresh air as soon as possible. When the difference between the outdoor fresh air temperature and the indoor ambient temperature is relatively large, the temperature of the mixed air of the fresh air and indoor air passing through the mixed air duct is closer to the indoor ambient temperature, and the mixed air of the fresh air and indoor air passing through the mixed air duct will make the user feel comfortable. Further, according to the difference between the outdoor fresh air temperature and the indoor ambient temperature, it is determined whether the air flowing out of the mixed air duct flows out from the second air outlet 21 or the third air outlet 36, which can further ensure that the air outlet is comfortable when the air conditioner introduces fresh air. For example, the wind flowing out of the mixed air duct can flow out from the second air outlet 21 and mix with the heat exchange air of the heat exchange air outlet 11, so that the temperature of the fresh air or the mixed air of the fresh air and the indoor air can be closer to the indoor ambient temperature, making the air outlet comfortable. The wind flowing out of the mixed air duct can also flow out from the third air outlet 36, and then at least partially enter the second indoor air inlet 12 to mix with the indoor air entering the second indoor air inlet 12 again, and then pass through the evaporator 13 and flow out of the heat exchange air outlet in the form of mixed hot air, which can also make the temperature of the fresh air close to the indoor ambient temperature, making the air outlet comfortable. The above control method can not only ensure that the air outlet is comfortable after the air conditioner introduces fresh air, but also ensure that the newly introduced fresh air will not significantly affect the indoor ambient temperature, thereby improving the user experience when using the air conditioner to introduce fresh air.

[0051] Further, in some embodiments of the present invention, Figure 2 As shown, when the difference between the outdoor fresh air temperature and the indoor ambient temperature is less than or equal to the first preset temperature difference, only the fresh air inlet is opened, and the mixed air duct is connected to the second air outlet 21. In other words, the difference between the outdoor fresh air temperature and the indoor ambient temperature is not large, and only the fresh air inlet is opened. The fresh air flows out from the second air outlet 21 through the mixed air duct and mixes with the air from the heat exchange air outlet 11 to ensure the comfort of the fresh air flowing out. It should be noted that the difference between the outdoor fresh air temperature and the indoor ambient temperature in this manual is calculated as follows: when cooling, the difference is the outdoor fresh air temperature minus the indoor ambient temperature, and when heating, the difference is the indoor ambient temperature minus the outdoor fresh air temperature. The first preset temperature difference is 1° to 3°, and preferably, the first preset temperature difference is 2°.

[0052] Further, in some embodiments of the present invention, Figure 3As shown, when the difference between the outdoor fresh air temperature and the indoor ambient temperature is greater than the first preset temperature difference and less than or equal to the second preset temperature difference, the fresh air inlet and the first indoor air inlet are opened at the same time, and the mixed air duct is connected to the second air outlet 21. The second preset temperature difference is greater than the first preset temperature difference. In other words, the difference between the outdoor fresh air temperature and the indoor ambient temperature is relatively large. The fresh air inlet and the first indoor air inlet are opened at the same time, so that the fresh air and the indoor air are mixed through the mixed air duct and then flow out from the second air outlet 21, and are mixed with the air out of the heat exchange air outlet 11 to ensure the comfort of the fresh air flowing out. The second preset temperature difference is 3° to 5°, and preferably, the second preset temperature difference is 4°.

[0053] In some embodiments of the present invention, when the difference between the outdoor fresh air temperature and the indoor ambient temperature is greater than the first preset temperature difference and less than or equal to the second preset temperature difference, and the outdoor fresh air temperature is greater than the indoor ambient temperature, the air conditioner is in cooling mode, the air outlet of the heat exchange air outlet is cooling air, and the temperature of the cooling air is the indoor ambient temperature minus the first preset temperature value. The first preset temperature value is 1° to 3°, preferably, the first preset temperature value is 2°. When the difference between the outdoor fresh air temperature and the indoor ambient temperature is greater than the first preset temperature difference and less than or equal to the second preset temperature difference, and when the outdoor fresh air temperature is less than the indoor ambient temperature, the air conditioner is in heating mode, the air outlet of the heat exchange air outlet is heating air, and the temperature of the heating air is the indoor ambient temperature plus the second preset temperature value. The second preset temperature value is 5° to 7°, preferably, the second preset temperature value is 6°.

[0054] In some embodiments of the present invention, Figure 4 As shown, when the difference between the outdoor fresh air temperature and the indoor ambient temperature is greater than the second preset temperature difference, the fresh air inlet and the first indoor air inlet are opened at the same time, and the mixed air duct is connected to the third air outlet 36. In other words, the difference between the outdoor fresh air temperature and the indoor ambient temperature is very large. The temperature of the fresh air cannot be significantly improved by mixing the fresh air, the indoor air and the heat exchange air before the air conditioner. In order to ensure the comfort of the air supply, the proportion of the fresh air in the mixed air can only be reduced as much as possible, which obviously cannot meet the customer's demand for fresh air. In order to solve this problem, this control method allows the mixed air of the fresh air and the indoor air to flow out from the third air outlet 36 through the mixed air duct, and at least part of the mixed air enters the second indoor air inlet 12 and flows out in the form of heat exchange air. This control method can meet the customer's demand for comfortable air supply and the customer's demand for fresh air, killing two birds with one stone.

[0055] In some embodiments of the present invention, when the difference between the outdoor fresh air temperature and the indoor ambient temperature is greater than the second preset temperature difference, and the outdoor fresh air temperature is greater than the indoor ambient temperature, the air conditioner is in cooling mode, the air outlet of the heat exchange air outlet 11 is cooling air, and the temperature of the cooling air is the indoor ambient temperature minus the third preset temperature value. The third preset temperature value is 3° to 5°, preferably, the third preset temperature value is 4°. When the difference between the outdoor fresh air temperature and the indoor ambient temperature is greater than the second preset temperature difference, and the outdoor fresh air temperature is less than the indoor ambient temperature, the air conditioner is in heating mode, the air outlet of the heat exchange air outlet 11 is heating air, and the temperature of the heating air is the indoor ambient temperature plus the fourth preset temperature value. The fourth preset temperature value is 8° to 12°, preferably, the fourth preset temperature value is 10°.

[0056] In some embodiments of the present invention, the control method of the air conditioner further includes: obtaining the maximum distance between the indoor space and the air conditioner, and determining the wind speed of the heat exchange air outlet 11 according to the maximum distance, so that among at least two different maximum distances, the wind speed corresponding to the larger maximum distance is relatively large. In order to ensure the air supply effect of the fresh air, when the maximum distance between the indoor space and the air conditioner is large, the wind speed of the air outlet set at the heat exchange air outlet 11 is also large accordingly, so that when the heat exchange air and the fresh air are mixed in front of the air conditioner, the fresh air is sent farther or the fresh air flows out directly through the heat exchange air outlet 11, so that the fresh air is sent farther.

[0057] Further, in some embodiments of the present invention, Figure 5 As shown, when the maximum distance is less than or equal to the first preset distance, the wind speed of the heat exchange air outlet 11 is the first wind speed. When the maximum distance is greater than the first preset distance and less than or equal to the second preset distance, the wind speed of the heat exchange air outlet 11 is the second wind speed. When the maximum distance is greater than the second preset distance, the wind speed of the heat exchange air outlet 11 is the third wind speed. The second preset distance is greater than the first preset distance. The third wind speed is greater than the second wind speed, and the second wind speed is greater than the first wind speed. The first preset distance is 3m to 4m, preferably, the first preset distance is 3.5m. The second preset distance is 5m to 7m, preferably, the second preset distance is 6m.

[0058] In some embodiments of the present invention, the control method of the air conditioner further includes: obtaining the indoor carbon dioxide concentration. When the indoor carbon dioxide concentration is greater than or equal to the preset concentration, it is determined that fresh air is needed. When the indoor carbon dioxide concentration is less than the preset concentration, the fresh air inlet and the first indoor air inlet are closed, or the fresh air inlet is closed to stop fresh air. Of course, in other embodiments of the present invention, it is also possible to determine whether fresh air is needed based on comparing the indoor PM2.5 concentration with the preset PM2.5 concentration or comparing the oxygen concentration with the preset oxygen concentration.

[0059] In some embodiments of the present invention, Figure 7 As shown, an induced draft interval 15 is provided between the heat exchange air outlet 11 and the second air outlet 21, so that when the fresh air and the indoor air enter the mixed air duct at the same time, the fresh air is first mixed with the indoor air, and when it flows out through the second air outlet 21, the mixed air is mixed with the air from the induced draft interval 15 and the indoor air after heat exchange. When the second air outlet 21 and the heat exchange air outlet 11 discharge air at the same time, the indoor air in the induced draft interval 15 is driven to flow forward by the negative pressure effect, so that the fresh air is mixed with more indoor air, and the mixed air is mixed with the air from the induced draft interval 15 and the indoor air after heat exchange, the outlet air temperature is closer to the indoor temperature, and the air passively introduced into the induced draft interval 15 is increased, and the induced draft volume of the air conditioner is large.

[0060] In some embodiments of the present invention, a first air duct and a second air duct are provided in the housing, and both the first air duct and the second air duct are in the shape of vertical strips, the first air duct is connected to the heat exchange air outlet 11, and the second air duct is connected to the second air outlet 21. The second air outlet 21 is provided on one side of the heat exchange air outlet 11 so that the air out of the second air outlet 21 is mixed with the heat exchange air of the heat exchange air outlet 11. An evaporator 13 and a heat exchange fan are provided in the first air duct, and the heat exchange fan guides the air to enter the first air duct from the second indoor air inlet 12, and blows out from the heat exchange air outlet 11 after passing through the evaporator 13.

[0061] In some embodiments of the present invention, the heat exchange fan is a cross-flow fan 14. In other embodiments of the present invention, the heat exchange fan may also be an axial flow fan or a centrifugal fan.

[0062] In some embodiments of the present invention, Fig. 9 As shown, an air inlet is provided at the lower end of the second air duct, and a plurality of guide vanes 22 arranged vertically are provided in the second air duct, each guide vane 22 extends from front to back, and the rear end is bent downward to form a guide bend, and the distance between the front and rear ends of the guide vane 22 located higher is greater. The wind flows from bottom to top, and after encountering each guide vane 22, it is guided by its guide bend, and gradually changes from flowing upward to flowing forward. Therefore, the guide bend plays a role in changing the direction of wind flow, making the wind turn more gentle and the wind force loss smaller. The guide bend and the rest of the guide vane 22 are transitioned with a rounded corner. Further, considering that the wind enters from the bottom of the second air duct, the air volume in the middle or upper part of the second air outlet 21 may be small. Therefore, in the embodiment of the present invention, a plurality of guide vanes 22 arranged vertically are particularly provided in the second air duct, and the distance between the front and rear ends of the guide vane 22 located higher is greater, so that the air outlet of the second air outlet 21 at various locations in the vertical direction is more uniform.

[0063] In some embodiments of the present invention, the first air duct and the second air duct are spaced apart from each other, so that an air induction space 15 penetrating through the shell is formed between the first air duct and the second air duct.

[0064] In some embodiments of the present invention, Figure 6 and Fig.10 As shown, the housing includes: a first air outlet column 10, a second air outlet column 20 and a lower shell 30. The first air outlet column 10 is in the shape of a vertical column, the first air duct is arranged in the first air outlet column 10, and a heat exchange air outlet 11 is provided on the front side of the first air outlet column 10. A second indoor air inlet 12 connected with the heat exchange air outlet 11 is provided on the rear wall and side wall of the first air outlet column 10. The second air outlet column 20 is in the shape of a vertical column, the second air duct is arranged in the second air outlet column 20, a second air outlet 21 is provided on the front side of the second air outlet column 20, and an air inlet connected with the second air outlet 21 is provided at the lower end of the second air outlet column 20. The second air outlet column 20 is arranged on one lateral side of the first air outlet column 10. An air induction interval 15 is formed between the second air outlet column 20 and the first air outlet column 10, so that when the heat exchange air outlet 11 and / or the second air outlet 21 discharge air, the air in the air induction interval 15 is driven to flow forward by the negative pressure effect. The first air outlet column 10 and the second air outlet column 20 are arranged at the top of the lower shell 30. The fresh air inlet 34, the first indoor air inlet 33 and the third air outlet 36 are arranged on the peripheral wall of the lower shell 30, and the third air outlet 36 is arranged near the second indoor air inlet 12. The first indoor air inlet 33 is provided with a first damper for opening and closing the first indoor air inlet 33. A fan is arranged in the lower shell 30, and the air mixing duct is arranged in the fan. The air inlet of the fan is connected with the fresh air inlet 34 and the first indoor air inlet 33, and the air outlet of the fan is connected with the air inlet or the third air outlet 36 through the second damper 32.

[0065] In some embodiments of the present invention, the fan is a centrifugal fan 31. In other embodiments of the present invention, the fan may also be an axial flow fan or a cross flow fan.

[0066] In some embodiments of the present invention, Fig. 9 As shown, a functional module 35 is provided between the fresh air inlet 34, the first indoor air inlet 33 and the air inlet of the fan 31. The functional module 35 is a purification module and / or a humidification module. Correspondingly, the air out of the second air outlet 21 is purified air and / or humidified air.

[0067] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A method for controlling an air conditioner, the air conditioner comprising an air conditioner indoor unit, characterized in that: The air conditioner indoor unit comprises a shell; the shell is provided with a fresh air inlet, a first indoor air inlet, a second indoor air inlet, a heat exchange air outlet, a second air outlet and a third air outlet, the heat exchange air outlet and the second air outlet are both in a strip shape; the heat exchange air outlet is connected to the second indoor air inlet; the shell is provided with an air mixing duct and an evaporator; wherein the control method of the air conditioner comprises: When fresh air is needed, obtain the outdoor fresh air temperature; According to the difference between the outdoor fresh air temperature and the indoor ambient temperature, determine: whether to open the fresh air inlet and the first indoor air inlet at the same time so that the fresh air and the indoor air enter the mixed air duct at the same time, or to open only the fresh air inlet so that only the fresh air enters the mixed air duct; and / or, Either the mixed air duct is connected with the second air outlet so that the air in the mixed air duct is mixed with the heat exchange air flowing out of the heat exchange air outlet after flowing out through the second air outlet, and then when the fresh air and the indoor air enter the mixed air duct at the same time, the fresh air is first mixed with the indoor air, and the mixed air is mixed with the indoor air after the heat exchange; or the mixed air duct is connected with the third air outlet so that after the air in the mixed air duct flows out through the third air outlet, at least part of the air from the mixed air duct enters the second indoor air inlet, and then when the fresh air and the indoor air enter the mixed air duct at the same time, the fresh air is first mixed with the indoor air, and the mixed air is again mixed with the indoor air entering the second indoor air inlet, and then heat exchange is performed with the evaporator, and finally flows out of the heat exchange air outlet.

2. The air conditioner control method according to claim 1, characterized in that: When the difference between the outdoor fresh air temperature and the indoor ambient temperature is less than or equal to a first preset temperature difference, only the fresh air inlet is opened, and the mixed air duct is connected to the second air outlet.

3. The air conditioner control method according to claim 1, characterized in that: When the difference between the outdoor fresh air temperature and the indoor ambient temperature is greater than the first preset temperature difference and less than or equal to the second preset temperature difference, the fresh air inlet and the first indoor air inlet are opened at the same time, and the mixed air duct is connected to the second air outlet; The second preset temperature difference is greater than the first preset temperature difference.

4. The air conditioner control method according to claim 1, characterized in that: When the difference between the outdoor fresh air temperature and the indoor ambient temperature is greater than a second preset temperature difference, the fresh air inlet and the first indoor air inlet are opened at the same time, and the mixed air duct is connected to the third air outlet.

5. The air conditioner control method according to claim 1, characterized in that: Also includes: The maximum distance between the indoor space and the air conditioner is obtained, and the wind speed of the heat exchange air outlet is determined according to the maximum distance, so that among at least two different maximum distances, the larger maximum distance corresponds to a larger wind speed.

6. The air conditioner control method according to claim 5, characterized in that: When the maximum distance is less than or equal to the first preset distance, the wind speed of the heat exchange air outlet is the first wind speed; When the maximum distance is greater than the first preset distance and less than or equal to the second preset distance, the wind speed of the heat exchange air outlet is the second wind speed; When the maximum distance is greater than the second preset distance, the wind speed of the heat exchange air outlet is the third wind speed; The second preset distance is greater than the first preset distance; The third wind speed is greater than the second wind speed, and the second wind speed is greater than the first wind speed.

7. The air conditioner control method according to claim 1, characterized in that: Also includes: Get indoor carbon dioxide concentration; When the indoor carbon dioxide concentration is greater than or equal to a preset concentration, it is determined that fresh air is required; When the indoor carbon dioxide concentration is less than a preset concentration, the fresh air inlet and the first indoor air inlet are closed, or the fresh air inlet is closed to stop ventilation of fresh air.

8. The air conditioner control method according to claim 1, characterized in that: An induced draft interval is provided between the heat exchange air outlet and the second air outlet so that when the fresh air and the indoor air enter the mixed air duct at the same time, the fresh air is first mixed with the indoor air, and when the mixed air flows out through the second air outlet, it is mixed with the air from the induced draft interval and the indoor air after heat exchange.

9. The air conditioner control method according to claim 8, characterized in that: The housing is provided with a first air duct and a second air duct, both of which are in the shape of vertical bars, the first air duct is connected to the heat exchange air outlet, and the second air duct is connected to the second air outlet; the second air outlet is provided at one side of the heat exchange air outlet, so that the air out of the second air outlet is mixed with the heat exchange air of the heat exchange air outlet; The first air duct is provided with the evaporator and the heat exchange fan, and the heat exchange fan guides the air to enter the first air duct from the second indoor air inlet, and blows the air out from the heat exchange air outlet after passing through the evaporator; An air inlet is provided at the lower end of the second air duct, and a plurality of guide vanes arranged vertically are provided in the second air duct, each of the guide vanes extends from front to rear, and the rear end is bent downward to form a guide bending portion, and the distance between the front and rear ends of the guide vanes located higher up is greater; The first air duct and the second air duct are arranged at intervals, so that an air induction interval penetrating the housing is formed between the first air duct and the second air duct.

10. The air conditioner control method according to claim 9, characterized in that: The housing comprises: A first air outlet column, wherein the first air outlet column is in a vertical column shape, the first air duct is arranged in the first air outlet column, and the heat exchange air outlet is provided on the front side of the first air outlet column; the first air outlet column is provided with the second indoor air inlet connected with the heat exchange air outlet; a second air outlet column, the second air outlet column is in a vertical column shape, the second air duct is arranged in the second air outlet column, the second air outlet is opened on the front side of the second air outlet column, the lower end of the second air outlet column is provided with the air inlet connected with the second air outlet; the second air outlet column is arranged on a lateral side of the first air outlet column; the second air outlet column and the first air outlet column form the air induction interval; The first air outlet column and the second air outlet column are arranged at the top of the lower shell; the fresh air inlet, the first indoor air inlet and the third air outlet are arranged on the peripheral wall of the lower shell, and the third air outlet is arranged near the second indoor air inlet; the first indoor air inlet is provided with a first damper for opening and closing the first indoor air inlet; A fan is arranged in the lower shell, the air mixing duct is arranged in the fan, the air inlet of the fan is connected with the fresh air inlet and the first indoor air inlet, and the air outlet of the fan is selectively connected with the air inlet or the third air outlet through a second air door; the fan is a centrifugal fan; A functional module is arranged between the fresh air inlet, the first indoor air inlet and the air inlet of the fan; the functional module is a purification module and / or a humidification module.

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