A duct air conditioner structure and control method

Abstract

This invention provides a ducted air conditioner structure and control method. The ducted air conditioner structure is installed within a temperature-controlled space. A first mounting plate is connected to the top wall of the temperature-controlled space; an exhaust port is provided on the first mounting plate; a second mounting plate is connected to the side wall of the temperature-controlled space; the second mounting plate is connected to the first mounting plate, so that the first mounting plate, the second mounting plate, the top wall, and the side wall form an accommodating space; a ducted air conditioner housing is installed within the accommodating space; a ducted air conditioner assembly is used to allow airflow entering the ducted air conditioner housing from the air inlet to pass through heat exchange and then exit from the first air outlet; a damper component is used to guide the airflow within the ducted air conditioner housing, so that at least a portion of the airflow within the ducted air conditioner housing exits from the second air outlet, passes through the obstruction of the second mounting plate, and then enters the ducted air conditioner housing from the air inlet, thus solving the technical problem of excessive energy consumption in related technologies for ducted air conditioners.

Description

Technical Field

[0001] This invention relates to the field of duct air conditioning technology, specifically to a duct air conditioning structure and control method. Background Technology

[0002] In recent years, central air conditioning has seen a continuous increase in market share due to its advantages of aesthetically pleasing installation and small footprint, as the indoor units are ceiling-mounted (also known as ducted systems). However, most existing mainstream ducted systems have their air supply and return air installed on two perpendicular surfaces, which is neither aesthetically pleasing nor cost-effective. More and more users are demanding products where the supply and return air are in the same direction.

[0003] However, when using air conditioning for heating and defrosting, the evaporator side fan is often turned off to avoid direct cold air blowing, resulting in low heat exchange efficiency on the evaporator side, small system mass flow rate, and inability to defrost quickly, thus prolonging the defrosting time, affecting customer experience and energy consumption.

[0004] In addition, the outdoor unit of a multi-split system has a relatively high power consumption, requiring a large amount of energy to start up. However, the compressor and fan themselves have minimum frequency limitations, and the indoor unit's fan also has a minimum frequency limitation. This means that even after the operating temperature reaches the set point, the unit's output is still greater than the required cooling or heating capacity, forcing the unit to shut down, resulting in high energy consumption.

[0005] Therefore, existing technologies need further development. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a duct air conditioner structure and control method to solve the technical problem of excessive energy consumption of duct air conditioners in related technologies.

[0007] To achieve the above technical objectives, the present invention adopts the following technical solution: A ducted air conditioning unit structure is provided, disposed within a space to be regulated in temperature. The ducted air conditioning unit structure includes: a first mounting plate connected to the top wall of the space to be regulated in temperature; an exhaust port provided on the first mounting plate; a second mounting plate connected to the side wall of the space to be regulated in temperature; the second mounting plate is connected to the first mounting plate so that the first mounting plate, the second mounting plate, the top wall, and the side wall form an accommodating space; a ducted air conditioning unit housing disposed within the accommodating space, the ducted air conditioning unit housing having an air outlet and an air inlet; the air outlet including a first air outlet opposite to the exhaust port and a second air outlet opposite to the second mounting plate; a ducted air conditioning unit assembly for allowing airflow entering the ducted air conditioning unit housing from the air inlet to pass through heat exchange and then exit from the first air outlet; and a damper component for guiding airflow within the ducted air conditioning unit housing so that at least a portion of the airflow within the ducted air conditioning unit housing exits from the second air outlet, passes through the obstruction of the second mounting plate, and then enters the ducted air conditioning unit housing from the air inlet.

[0008] Furthermore, the duct unit housing includes: a first plate, which is disposed opposite to a first mounting plate, and a first air outlet is disposed on the first plate; a second plate, which is disposed opposite to a second mounting plate, and a second air outlet is disposed on the second plate; a third plate, which is disposed opposite to a side wall; and a fourth plate, which is disposed opposite to a top wall; wherein the first plate, the second plate, the third plate, and the fourth plate are interconnected; and air inlets are provided on both the third plate and the fourth plate.

[0009] Furthermore, the first plate is spaced apart from the first mounting plate to form a first air inlet channel between the first plate and the first mounting plate; and / or, the second plate is spaced apart from the second mounting plate to form a second air inlet channel between the second plate and the second mounting plate; and / or, the third plate is spaced apart from the side wall to form a third air inlet channel between the third plate and the side wall; and / or, the fourth plate is spaced apart from the top wall to form a fourth air inlet channel between the fourth plate and the top wall.

[0010] Furthermore, the duct unit assembly includes: a volute component disposed within the duct unit housing, the volute component having an airflow channel, the airflow channel including a first airflow channel communicating with a first air outlet and a second airflow channel communicating with a second air outlet; and a cross-flow fan blade disposed within the duct unit housing, the cross-flow fan blade being used to blow airflow into the airflow channel.

[0011] Furthermore, the volute component includes: a first volute connected to a first plate; a second volute connected to a second plate; a third volute connected to both the first and second plates; a first airflow channel located between the first and third volutes; a second airflow channel located between the second and third volutes; and a damper component rotatably connected to the third volute.

[0012] Furthermore, the angle of the damper component relative to the horizontal direction is adjustable, and the damper component has a defrosting mode that abuts against the first volute and an air outlet mode that abuts against the second volute; when the damper component is in the defrosting mode, the damper component closes the first airflow channel, and when the damper component is in the air outlet mode, the damper component closes the second airflow channel.

[0013] Furthermore, the duct unit structure also includes a first heat exchange component and a second heat exchange component. One end of the second heat exchange component abuts against the first heat exchange component, and the other end of the second heat exchange component is spaced apart from the first heat exchange component to form an air inlet channel between the first heat exchange component and the second heat exchange component. The air inlet channel is connected to the air inlet of the cross-flow fan blade.

[0014] Furthermore, the first mounting plate is provided with an air inlet grille, which has air inlets for airflow in the space to be regulated to enter the accommodating space through the air inlet grille; wherein, on the side of the first mounting plate close to the space to be regulated, the area of ​​the air inlet is larger than the area of ​​the air outlet.

[0015] The control method of this embodiment is applicable to the above-mentioned duct air conditioner structure. The control method includes: setting a preset temperature in the space to be adjusted; when the temperature in the space to be adjusted reaches the preset temperature, controlling the movement of the air valve component of the duct air conditioner structure, so that the air valve component guides a part of the airflow in the duct air conditioner housing to be discharged from the exhaust port, and the air valve component guides another part of the airflow in the duct air conditioner housing to be discharged from the second air outlet, and then enters the duct air conditioner housing from the air inlet.

[0016] Furthermore, the control method also includes: setting a defrosting mode in the duct unit structure; when the duct unit structure is in defrosting mode, controlling the movement of the air valve component, so that the air valve component guides all the airflow in the duct unit housing to be discharged from the second air outlet and then enter the duct unit housing from the air inlet.

[0017] Beneficial effects:

[0018] 1. The duct air conditioner structure of the present invention can improve the defrosting effect, shorten the defrosting time, enhance the customer experience and reduce energy consumption.

[0019] 2. The duct unit structure of the present invention reduces the cooling or heating efficiency of the unit after the temperature point is reached on the side of use, thereby extending the standby time of the unit, reducing the number of times the unit is turned on and off, and reducing the energy consumption of the unit. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of the duct machine structure used in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the duct machine used in the embodiment of the present invention when it is in the defrosting state;

[0022] Figure 3 This is a schematic diagram of the duct air handling unit structure used in this embodiment of the invention in standby mode;

[0023] Figure 4 This is a schematic diagram of the duct air conditioner structure used in the embodiment of the present invention when it is in the air outlet state;

[0024] Figure 5 yes Figure 4 A magnified view of part A in the middle;

[0025] Figure 6 This is a schematic diagram of the duct machine structure used in an embodiment of the present invention;

[0026] Figure 7 This is a side view of the duct machine assembly of the duct machine structure used in an embodiment of the present invention;

[0027] Figure 8This is a front view of the duct machine assembly of the duct machine structure used in the embodiments of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of the duct machine component used in the embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the air inlet grille of the duct machine structure used in an embodiment of the present invention.

[0030] The above figures include the following reference numerals:

[0031] 10. Temperature-regulating space; 101. Top wall; 102. Side wall; 103. Reception space;

[0032] 1. First mounting plate; 11. Exhaust vent; 12. Air inlet grille; 121. Air inlet hole; 2. Second mounting plate; 3. Duct unit housing; 31. Air outlet; 311. First air outlet; 312. Second air outlet; 32. Air inlet; 33. First plate; 331. First air inlet channel; 34. Second plate; 341. Second air inlet channel; 351. Third air inlet channel; 361. Fourth air inlet channel; 35. Third plate; 36. Fourth plate; 4. Volute assembly; 41. Airflow channel; 411. First airflow channel; 412. Second airflow channel; 401. First volute; 402. Second volute; 403. Third volute; 5. Air valve assembly; 61. First heat exchanger assembly; 62. Second heat exchanger assembly; 63. Air inlet channel; 7. Cross-flow fan blade; 8. Duct unit assembly. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0034] See Figures 1 to 10According to an embodiment of the present invention, a ducted air conditioner structure is provided, which is disposed within a temperature-adjustable space 10. The ducted air conditioner structure includes: a first mounting plate 1, which is connected to the top wall 101 of the temperature-adjustable space 10; an exhaust port 11 is provided on the first mounting plate 1; a second mounting plate 2, which is connected to the side wall 102 of the temperature-adjustable space 10; the second mounting plate 2 is connected to the first mounting plate 1, so that the first mounting plate 1, the second mounting plate 2, the top wall 101, and the side wall 102 form a receiving space 103; and a ducted air conditioner housing 3, which is disposed within the receiving space 103, and the ducted air conditioner housing 3 is provided with... It is provided with an air outlet 31 and an air inlet 32; the air outlet 31 includes a first air outlet 311 disposed opposite to the exhaust outlet 11 and a second air outlet 312 disposed opposite to the second mounting plate 2; a duct unit assembly 8, which is used to allow the airflow entering the duct unit housing 3 from the air inlet 32 ​​to be discharged from the first air outlet 311 after heat exchange; and a damper component 5, which is used to guide the airflow in the duct unit housing 3 so that at least part of the airflow in the duct unit housing 3 is discharged from the second air outlet 312, passes through the obstruction of the second mounting plate 2, and enters the duct unit housing 3 from the air inlet 32.

[0035] With the above settings, when the unit approaches the temperature point, it will reduce the compressor and fan frequency to minimize the unit's output load. However, if the output is still greater than the required cooling or heating capacity, the unit will have to shut down. At this time, by setting the air valve component 5, the airflow is guided, allowing some air to be discharged from the second air outlet 312, blocked by the second mounting plate 2, and then enter the duct unit housing 3 from the air inlet 32. This allows the airflow to circulate within the housing space, improving the unit's cooling or heating efficiency for indoor air, thereby extending the unit's standby time, reducing the number of times it is turned on and off, reducing the unit's energy consumption, and solving the technical problem of excessive energy consumption of duct units.

[0036] See Figure 1 In the duct air conditioner structure of this embodiment, the duct air conditioner housing 3 includes a first plate 33, which is disposed opposite to the first mounting plate 1, and a first air outlet 311 is disposed on the first plate 33; a second plate 34, which is disposed opposite to the second mounting plate 2, and a second air outlet 312 is disposed on the second plate 34; a third plate 35, which is disposed opposite to the side wall 102; and a fourth plate 36, which is disposed opposite to the top wall 101. The first plate 33, the second plate 34, the third plate 35, and the fourth plate 36 are interconnected. Both the third plate 35 and the fourth plate 36 are provided with air inlets 32.

[0037] In the structure of the duct unit in this embodiment, see Figure 1The first plate 33 is spaced apart from the first mounting plate 1 to form a first air inlet channel 331 between the first plate 33 and the first mounting plate 1; and / or, the second plate 34 is spaced apart from the second mounting plate 2 to form a second air inlet channel 341 between the second plate 34 and the second mounting plate 2; and / or, the third plate 35 is spaced apart from the side wall 102 to form a third air inlet channel 351 between the third plate 35 and the side wall 102; and / or, the fourth plate 36 is spaced apart from the top wall 101 to form a fourth air inlet channel 361 between the fourth plate 36 and the top wall 101.

[0038] Specifically, the first plate 33 is spaced apart from the first mounting plate 1 to form a first air inlet channel 331 between the first plate 33 and the first mounting plate 1; the second plate 34 is spaced apart from the second mounting plate 2 to form a second air inlet channel 341 between the second plate 34 and the second mounting plate 2; the third plate 35 is spaced apart from the side wall 102 to form a third air inlet channel 351 between the third plate 35 and the side wall 102; and the fourth plate 36 is spaced apart from the top wall 101 to form a fourth air inlet channel 361 between the fourth plate 36 and the top wall 101. This facilitates the flow of air within the accommodating space 103.

[0039] In the structure of the duct unit in this embodiment, see Figure 7 The duct unit assembly 8 further includes: a volute component 4 disposed within the duct unit housing 3, the volute component 4 having an airflow channel 41, the airflow channel 41 including a first airflow channel 411 communicating with a first air outlet 311 and a second airflow channel 412 communicating with a second air outlet 312; and a cross-flow fan blade 7 disposed within the duct unit housing 3, the cross-flow fan blade 7 being used to blow airflow into the airflow channel 41.

[0040] See Figure 7 In the duct air conditioner structure of this embodiment, the volute component 4 includes: a first volute 401 connected to the first plate 33; a second volute 402 connected to the second plate 34; and a third volute 403 connected to both the first plate 33 and the second plate 34. A first airflow channel 411 is located between the first volute 401 and the third volute 403, and a second airflow channel 412 is located between the second volute 402 and the third volute 403. The air valve component 5 is rotatably connected to the third volute 403. Thus, by rotating the third volute 403, the flow rate of the airflow passing through the first air outlet 311 and the second air outlet 312 can be easily adjusted.

[0041] See Figure 7In the duct air conditioner structure of this embodiment, the air valve component 5 is set at an adjustable angle relative to the horizontal direction. The air valve component 5 has a defrosting mode that abuts against the first volute 401 and an air outlet mode that abuts against the second volute 402. When the air valve component 5 is in the defrosting mode, the air valve component 5 closes the first airflow channel 411. When the air valve component 5 is in the air outlet mode, the air valve component 5 closes the second airflow channel 412.

[0042] Specifically, by controlling the air valve component 5 to abut against the volute component 4, the airflow channel is sealed, thereby enriching the functions of the air conditioner. The above setup is simple in structure and easy to implement.

[0043] In the structure of the duct unit in this embodiment, see Figure 7 The ducted air conditioner structure also includes a first heat exchange component 61 and a second heat exchange component 62. One end of the second heat exchange component 62 abuts against the first heat exchange component 61, and the other end of the second heat exchange component 62 is spaced apart from the first heat exchange component 61 to form an air inlet channel 63 between the first heat exchange component 61 and the second heat exchange component 62. The air inlet channel 63 is connected to the air inlet of the cross-flow fan 7. In this way, the airflow within the ducted air conditioner structure can more easily absorb heat and then distribute it to the air outlet 31.

[0044] In the ducted air conditioner structure of this embodiment, an air inlet grille 12 is provided on the first mounting plate 1. The air inlet grille 12 has an air inlet hole 121 through which airflow from the temperature-controlled space 10 enters the receiving space 103. On the side of the first mounting plate 1 closest to the temperature-controlled space 10, the area of ​​the air inlet hole 121 is larger than the area of ​​the air outlet 31. This ensures smooth airflow in the ducted air conditioner structure.

[0045] The control method of this embodiment is applicable to the above-mentioned duct air conditioner structure. The control method includes: setting a preset temperature in the temperature-adjustable space 10; when the temperature in the temperature-adjustable space 10 reaches the preset temperature, controlling the movement of the air valve component 5 of the duct air conditioner structure, so that the air valve component 5 guides a part of the airflow in the duct air conditioner housing 3 to be discharged from the exhaust port 11, and then guides another part of the airflow in the duct air conditioner housing 3 to be discharged from the second air outlet 312 and then enters the duct air conditioner housing 3 from the air inlet 32.

[0046] In the control method of this embodiment, the control method further includes: setting a defrosting mode in the duct machine structure; when the duct machine structure is in the defrosting mode, controlling the movement of the air valve component 5, so that the air valve component 5 guides all the airflow in the duct machine housing 3 to be discharged from the second air outlet 312 and then enter the duct machine housing 3 from the air inlet 32.

[0047] The structure and control method of the duct air handling unit of the present invention are described as follows:

[0048] The unit described in this invention includes materials such as a heat exchanger, a water receiving pan, a controller, a volute component 4, a cross-flow fan blade 7, a motor, and a damper component 5.

[0049] Figures 1 to 4 This is a schematic diagram of the airflow distribution when the unit uses ceiling-mounted return air. The unit returns air through the portion of the air inlet grille 12 other than the air outlet 31, and the area of ​​the air inlet grille 12 installed in the project is larger than the area of ​​the outlet air.

[0050] The duct air conditioner uses cross-flow fan blades 7 and adopts an intake heat exchange structure. Under the action of cross-flow fan blades 7, air enters the duct air conditioner housing 3 from the air inlet 32, undergoes heat exchange through the heat exchanger, and then passes through the cross-flow fan blades 7 before being blown out to the air outlet 31.

[0051] By using a stepper motor to drive the air valve component 5 to rotate around the rotating shaft, the air valve component 5 changes the air duct during the rotation process.

[0052] The first state is the air outlet mode during normal use, such as... Figure 4 .

[0053] The second state is the air outlet state when the unit reaches the temperature point and is in standby mode, such as... Figure 3 .

[0054] The third state is the defrosting airflow mode, such as... Figure 2 .

[0055] After the unit is powered on, the air valve component 5 is as follows: Figure 6 As shown, the unit's air outlet direction is horizontal, and the unit is normally heating or cooling the indoor air.

[0056] As the unit approaches its temperature target, it will reduce the compressor and fan frequencies to minimize the unit's output load. However, if the output still exceeds the required cooling or heating capacity, the unit will have to shut down. At this point, the control valve component 5 will adjust accordingly. Figure 3 As shown, this allows a portion of the air to circulate within the containment space, similar to a return air short circuit. This improves the unit's cooling or heating efficiency, thereby extending standby time, reducing the number of start-ups and shutdowns, and lowering energy consumption. Taking cooling as an example, when the unit approaches a specific temperature point, the air valve component 5 is controlled to... Figure 3 The location shown prevents most of the air being cooled by the unit from directly contributing to the work.

[0057] When the unit enters defrosting mode, the air valve component 5 is as follows: Figure 2As shown, the unit's fan can still operate at this location. Compared to the current control method of shutting off the indoor unit's fan during defrosting, this greatly improves the evaporation efficiency and heat exchange efficiency on the evaporator side, thereby increasing the system's flow rate during defrosting. This allows for the instantaneous release of a large amount of heat on the outdoor unit side, rapidly melting the frost layer, shortening defrosting time, improving customer experience, and reducing energy consumption. At this time, due to the damper obstruction, the indoor unit prioritizes heat extraction within its designated space. This achieves rapid defrosting without causing the indoor air temperature to drop too quickly (in terms of defrosting temperature reduction, this solution is comparable to the indoor temperature reduction rate of traditional defrosting solutions).

[0058] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0059] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0060] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0061] If the integrated units in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in the aforementioned computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0062] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0063] In the several embodiments provided in this application, it should be understood that the disclosed client can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between units or modules, and may be electrical or other forms.

[0064] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0065] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0066] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A control method of a ducted air conditioner structure provided in a space (10) to be temperature-controlled, characterized by, The structure of the duct unit includes: The first mounting plate (1) is connected to the top wall (101) of the temperature-adjustable space (10); the first mounting plate (1) is provided with an exhaust vent (11). The second mounting plate (2) is connected to the side wall (102) of the temperature-adjustable space (10); the second mounting plate (2) is connected to the first mounting plate (1) so that the first mounting plate (1), the second mounting plate (2), the top wall (101) and the side wall (102) form an accommodating space (103). The duct housing (3) is located within the accommodating space (103). The duct housing (3) is provided with an air outlet (31) and an air inlet (32). The air outlet (31) includes a first air outlet (311) disposed opposite to the exhaust outlet (11) and a second air outlet (312) disposed opposite to the second mounting plate (2). The air duct assembly (8) is used to allow the airflow entering the air duct housing (3) from the air inlet (32) to be discharged from the first air outlet (311) after heat exchange. Air valve component (5) is used to guide the airflow inside the duct machine housing (3) so that at least part of the airflow inside the duct machine housing (3) is discharged from the second air outlet (312) and then enters the duct machine housing (3) from the air inlet (32) after being blocked by the second mounting plate (2). The duct unit assembly (8) includes: The volute component (4) is disposed in the housing (3) of the air duct machine. The volute component (4) has an airflow channel (41). The airflow channel (41) includes a first airflow channel (411) communicating with the first air outlet (311) and a second airflow channel (412) communicating with the second air outlet (312). The duct housing (3) includes: a first plate (33) with a first air outlet (311) disposed on the first plate (33); and a second plate (34) with a second air outlet (312) disposed on the second plate (34). The volute component (4) includes: The first volute (401) is connected to the first plate (33); The second volute (402) is connected to the second plate (34); The third volute (403) is connected to both the first plate (33) and the second plate (34). The first airflow channel (411) is located between the first volute (401) and the third volute (403), and the second airflow channel (412) is located between the second volute (402) and the third volute (403). The air valve component (5) is rotatably connected to the third volute (403). The air valve component (5) is adjustable in angle relative to the horizontal direction. The air valve component (5) has a defrosting mode that abuts against the first volute (401) and an air outlet mode that abuts against the second volute (402). When the air valve component (5) is in the defrosting mode, the air valve component (5) closes the first airflow channel (411). When the air valve component (5) is in the air outlet mode, the air valve component (5) closes the second airflow channel (412). The control method includes: A preset temperature is set in the space to be adjusted (10). When the temperature in the space to be adjusted (10) reaches the preset temperature, the movement of the air valve component (5) of the air duct machine structure is controlled so that the air valve component (5) guides a part of the airflow in the air duct machine housing (3) to be discharged from the exhaust port (11), and the air valve component (5) guides another part of the airflow in the air duct machine housing (3) to be discharged from the second air outlet (312) and then enter the air duct machine housing (3) from the air inlet (32). A defrosting mode is set in the structure of the air duct machine. When the air duct machine structure is in the defrosting mode, the movement of the air valve component (5) is controlled so that the air valve component (5) guides all the airflow in the air duct machine housing (3) to be discharged from the second air outlet (312) and then enter the air duct machine housing (3) from the air inlet (32).

2. The control method of the ducted fan structure according to claim 1, characterized in that, The duct unit housing (3) includes: The first plate (33) is disposed opposite to the first mounting plate (1); The second plate (34) is disposed opposite to the second mounting plate (2); The third plate (35) is disposed opposite to the side wall (102); The fourth plate (36) is disposed opposite to the top wall (101); The first plate (33), the second plate (34), the third plate (35) and the fourth plate (36) are interconnected; the third plate (35) and the fourth plate (36) are each provided with an air inlet (32).

3. The control method for the duct machine structure according to claim 2, characterized in that, The first plate (33) is disposed at a distance from the first mounting plate (1) to form a first air inlet channel (331) between the first plate (33) and the first mounting plate (1); and / or, The second plate (34) is disposed at a distance from the second mounting plate (2) to form a second air inlet channel (341) between the second plate (34) and the second mounting plate (2); and / or, The third plate (35) is disposed at a distance from the side wall (102) to form a third air inlet channel (351) between the third plate (35) and the side wall (102); and / or, The fourth plate (36) is disposed at a distance from the top wall (101) to form a fourth air intake channel (361) between the fourth plate (36) and the top wall (101).

4. The control method of the ducted fan structure according to claim 3, characterized in that, The duct unit assembly (8) includes: The cross-flow fan blade (7) is installed inside the housing (3) of the air duct machine and is used to blow airflow into the airflow channel (41).

5. The control method of the ducted fan structure according to claim 4, characterized in that, The duct machine structure also includes a first heat exchange component (61) and a second heat exchange component (62). One end of the second heat exchange component (62) abuts against the first heat exchange component (61), and the other end of the second heat exchange component (62) is spaced apart from the first heat exchange component (61) to form an air inlet channel (63) between the first heat exchange component (61) and the second heat exchange component (62). The air inlet channel (63) is connected to the air inlet of the cross-flow fan (7).

6. The control method of the ducted fan structure according to claim 1, characterized in that, The first mounting plate (1) is provided with an air inlet grille (12), which has an air inlet hole (121) for the airflow in the temperature-controlled space (10) to enter the accommodating space (103) through the air inlet grille (12); wherein, on the side of the first mounting plate (1) close to the temperature-controlled space (10), the area of ​​the air inlet hole (121) is larger than the area of ​​the air outlet (31).

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