Integrated air conditioner with fresh air device and control method thereof

Abstract

The application provides a kind of integrated air conditioner with fresh air device and its control method, air conditioner includes fresh air device, fresh air device includes fresh air duct shell and fresh air fan in the air duct of fresh air duct shell, fresh air duct shell is formed with fresh air inlet and fresh air outlet, integrated air conditioner also includes the partition that the space in its shell is divided into indoor side and outdoor side, partition has the flow port of corresponding communication arrangement with fresh air inlet, fresh air duct shell can be driven to rotate to make it switch between through-flow position and cut-off position, when fresh air duct shell is in through-flow position, fresh air inlet is docked with flow port, when fresh air duct shell is in cut-off position, flow port is blocked for fresh air duct shell.The application reduces the number of assembly components, simplifies the structure design so that the structure of air conditioner is more compact, and can reduce production cost.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning technology, specifically relating to an integrated air conditioner with a fresh air device and its control method. Background Technology

[0002] PTAC (Package Terminal Air Conditioner) air conditioners with fresh air exchange function are mostly used in hotels. Therefore, user experience and business costs are more important. Currently, related products have complex structures, high costs, and a significant impact on the overall performance of the unit.

[0003] In related technologies, a fresh air device is installed inside the wall-mounted air conditioning unit, and the operation of the fresh air fan inside the fresh air device introduces fresh air from the outside into the indoor side, thereby improving the indoor air quality. In some related technical solutions, a corresponding damper is installed at the fresh air inlet of the fresh air device so that when fresh air is not needed (e.g., when the indoor air quality is higher than the outdoor air quality), the fresh air inlet can be closed by controlling the damper to prevent the lower quality outdoor air from entering the indoor side through the fresh air inlet. This method of configuring a separate damper at the fresh air inlet to control its opening and closing results in a relatively large number of assembly parts and a less compact structure, especially when dehumidification and other components are installed at the fresh air inlet, the structural design becomes even more complex. Summary of the Invention

[0004] Therefore, the present invention provides an integrated air conditioner with a fresh air device and its control method, which can overcome the technical problems of the related technology of configuring a separate damper at the fresh air inlet to control its opening and closing, resulting in a relatively large number of assembled parts, an insufficiently compact structure, and a more complex structural design.

[0005] To address the aforementioned problems, the present invention provides an integrated air conditioner with a fresh air device, comprising a fresh air device including a fresh air duct housing and a fresh air fan located in the duct of the fresh air duct housing. The fresh air duct housing has a fresh air inlet and a fresh air outlet. The integrated air conditioner further includes a partition that divides its internal space into an indoor side and an outdoor side. The partition has an outlet corresponding to and connected to the fresh air inlet. The fresh air duct housing can be driven to rotate to switch between a flow-through position and a cut-off position. When the fresh air duct housing is in the flow-through position, the fresh air inlet is connected to the outlet. When the fresh air duct housing is in the cut-off position, the outlet is blocked by the fresh air duct housing.

[0006] In some embodiments, the fresh air duct housing includes a fresh air volute and a fresh air volute tongue that are fitted together, wherein when the fresh air duct housing is in the cut-off position, the fresh air volute blocks the outlet; and / or, the fresh air device is located on the indoor side.

[0007] In some embodiments, the indoor side has an indoor air supply duct, and the lower part of the indoor air supply duct forms an accommodating space with the middle partition, and the fresh air device is located in the accommodating space.

[0008] In some embodiments, a fresh air inlet is formed on the duct wall of the indoor air supply duct, and the fresh air outlet is connected to the fresh air supply inlet.

[0009] In some embodiments, the outlet is provided with an air guide frame on the indoor side, and the air guide frame is able to fit and contact the outer surface of the fresh air volute.

[0010] In some embodiments, the partition has a bent section that can block one end of the fresh air duct housing and extends toward the indoor side. The fresh air device also includes a first drive motor for driving the fresh air volute to rotate. The fresh air fan includes a second drive motor that drives a first end of the fan blade. Both the first drive motor and the second drive motor are mounted on the wall surface of the bent section away from the inner side of the fresh air duct housing.

[0011] In some embodiments, the output shaft of the first drive motor has a drive gear, and the end of the fresh air volute corresponding to the position of the first drive motor has a driven gear ring, the drive gear meshing with the driven gear ring; and / or, the fan blade is a cross-flow fan blade; and / or, the second end of the fan blade is supported on the chassis of the air conditioner via a support rotation frame.

[0012] In some embodiments, the integrated air conditioner further includes an indoor heat exchanger, an outdoor heat exchanger, and a throttling element connected in series between the indoor and outdoor heat exchangers. The throttling element is connected to the indoor heat exchanger via a first pipeline, and a first on / off valve is provided on the first pipeline. A fresh air heat exchanger is provided on the indoor side of the outlet. The indoor and outdoor heat exchangers are also connected via a second pipeline, which is connected in parallel with the first pipeline. The fresh air heat exchanger and the second on / off valve are connected in series on the second pipeline. And / or, the integrated air conditioner is one of a wall-mounted air conditioner, a window air conditioner, or a portable air conditioner.

[0013] The present invention also provides a control method for the above-mentioned integrated air conditioner with a fresh air device, comprising the following steps:

[0014] Obtain the operating mode of the air conditioner;

[0015] When the operating mode is the fresh air introduction mode, the fresh air duct housing is controlled to rotate by a preset angle along the first rotation direction to open the fresh air inlet; or...

[0016] When the operating mode is the end of fresh air introduction mode, the fresh air duct housing is controlled to rotate by a preset angle in the opposite direction to the first rotation direction so as to close the fresh air inlet.

[0017] In some embodiments, when the air conditioner includes a fresh air heat exchanger:

[0018] When high-level dehumidification is detected during the operation of the fresh air introduction mode, the air conditioner is controlled to operate in cooling mode, and the first on-off valve is shut off while the second on-off valve is opened; or,

[0019] When low-level dehumidification is detected during the operation of the fresh air introduction mode, the air conditioner is controlled to operate in cooling mode, and both the first and second on / off valves are controlled to be open; or,

[0020] When high-level fresh air preheating is obtained during the operation of the fresh air introduction mode, the air conditioner is controlled to operate in heating mode, and the first on-off valve is cut off while the second on-off valve is opened; or,

[0021] When the air conditioner is preheated with low-level fresh air during the operation of the fresh air introduction mode, it is controlled to operate in heating mode, and both the first on / off valve and the second on / off valve are controlled to be open.

[0022] The present invention provides an integrated air conditioner with a fresh air device and its control method, which has the following characteristics:

[0023] Beneficial effects:

[0024] The fresh air unit has a fresh air duct housing that can be driven to rotate to switch between the flow-through position and the cut-off position, thereby selectively blocking and connecting the flow ports on the aforementioned partition plate. This eliminates the need to configure corresponding damper structures for the flow ports, reduces the number of assembly parts, simplifies the structural design, makes the air conditioner more compact, and reduces production costs.

[0025] The fresh air device is located on the indoor side, that is, on the side of the partition closest to the indoor side. This reduces the space occupied by the fresh air device on the outdoor side of the air conditioner and prevents adverse effects on the airflow of the outdoor heat exchanger.

[0026] The fresh air device is placed in the space between the lower part of the indoor air supply duct and the middle partition. Since this space is objectively a necessary part of the structure of the indoor air supply duct, making full use of this space will not increase the overall size of the air conditioner. As a result, the air conditioner structure in this invention can be more compact and smaller in size.

[0027] The flow outlet fits snugly against the outer surface of the fresh air volute through the air guide frame, which ensures that the fresh air introduced is leak-free when the fresh air duct housing is in the flow position.

[0028] By setting a bending section on the partition plate, the bending section can seal the shaft end of the fresh air duct housing to prevent fresh air leakage. At the same time, it also serves as the assembly carrier for the aforementioned first drive motor and second drive motor, further simplifying the internal structural design of the air conditioner and further improving the structural compactness.

[0029] By connecting the first and second pipelines in parallel between the indoor heat exchanger and the throttling element, the flow of refrigerant in the first or second pipeline can be controlled by controlling the on / off state of the first and second on / off valves, thereby enabling the selection of the operating state of the fresh air heat exchanger. Attached Figure Description

[0030] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0031] Figure 1 This is a three-dimensional structural diagram of an integrated air conditioner with a fresh air device according to an embodiment of the present invention (some structures are omitted, such as the upper part of the outer shell).

[0032] Figure 2 yes Figure 1 A three-dimensional structural diagram of the fresh air system;

[0033] Figure 3 yes Figure 2 Exploded view of the structure of the fresh air unit in the middle;

[0034] Figure 4 yes Figure 1 A schematic diagram of the integrated air conditioner in the state where the fresh air duct casing is in the cut-off position;

[0035] Figure 5 yes Figure 1 A schematic diagram of the integrated air conditioner in the fresh air duct housing in the airflow position;

[0036] Figure 6 yes Figure 1 A three-dimensional structural diagram of the partition plate in the middle;

[0037] Figure 7 yes Figure 1 A schematic diagram of the system principle of an integrated air conditioner;

[0038] Figure 8 yes Figure 7 The diagram shows the refrigerant flow direction when the integrated air conditioner is in heating mode. At this time, the fresh air can be preheated through the fresh air heat exchanger.

[0039] Figure 9 yes Figure 7 The diagram shows the refrigerant flow direction when the integrated air conditioner is in cooling mode. At this time, the fresh air can be dehumidified through the fresh air heat exchanger.

[0040] The attached figures are labeled as follows:

[0041] 1. Fresh air unit; 101. Fresh air inlet; 102. Fresh air outlet; 11. Fresh air duct housing; 111. Fresh air volute; 1111. Driven gear ring; 112. Fresh air volute tongue; 12. Fresh air fan; 121. Fan blade; 13. First drive motor; 131. Drive gear; 14. Second drive motor; 141. Motor housing; 142. Motor end cover; 15. Fresh air heat exchanger; 16. 1. Supporting rotating frame; 2. Middle partition; 21. Flow port; 211. Air guide frame; 22. Bending section; 31. Indoor air supply duct; 32. Indoor heat exchanger; 33. Indoor fan; 34. Auxiliary electric heater; 4. Chassis; 51. Outdoor heat exchanger; 52. Throttling element; 61. First on / off valve; 62. Second on / off valve; 71. Compressor; 72. Gas-liquid separator; 73. Four-way reversing valve. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0044] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90° or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0045] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0046] See Figures 1 to 9As shown, according to an embodiment of the present invention, an integrated air conditioner with a fresh air device is provided. Specifically, the integrated air conditioner is one of a wall-mounted air conditioner, a window air conditioner, or a portable air conditioner. The integrated air conditioner includes a fresh air device 1 for introducing outdoor air into an indoor space. The fresh air device 1 includes a fresh air duct housing 11 and a fresh air fan 12 located in the duct of the fresh air duct housing 11. A fresh air inlet 101 and a fresh air outlet 102 are formed on the fresh air duct housing 11. The air conditioner also includes a partition 2 that divides its internal space into an indoor side and an outdoor side. The partition 2 has an outlet 21 that is connected to the fresh air inlet 101. The fresh air duct housing 11 can be driven to rotate to switch between a flow-through position and a cut-off position. When the fresh air duct housing 11 is in the flow-through position, the fresh air inlet 101 is connected to the outlet 21. When the fresh air duct housing 11 is in the cut-off position, the outlet 21 blocks the fresh air duct housing 11.

[0047] In this technical solution, the fresh air device 1 has a fresh air duct housing 11 that can be driven to rotate to switch between the flow position and the cut-off position, thereby achieving selective blocking and connection of the flow port 21 on the middle partition 2. This eliminates the need to configure a corresponding damper structure for the flow port 21, reduces the number of assembly parts, simplifies the structural design, makes the air conditioner structure more compact, and reduces production costs.

[0048] In some embodiments, the fresh air duct housing 11 includes a fresh air volute 111 and a fresh air volute tongue 112 that are fitted together, wherein when the fresh air duct housing 11 is in the cut-off position, the fresh air volute 111 blocks the flow port 21.

[0049] In this technical solution, the fresh air volute 111 and the fresh air volute tongue 112 are assembled together to form the fresh air duct housing 11, which facilitates the assembly of the fresh air fan 12 in the duct cavity formed by the two. At the same time, the fresh air volute 111 has a large solid area, which blocks the aforementioned flow port 21, ensuring that the flow area of ​​the flow port 21 is designed to be relatively large, thereby ensuring the improvement of fresh air volume.

[0050] In some embodiments, the fresh air device 1 is located on the indoor side, that is, on the side of the partition 2 closest to the indoor side. This can reduce the space occupied by the fresh air device 1 on the outdoor side of the air conditioner and prevent adverse effects on the air intake airflow of the outdoor heat exchanger 51.

[0051] In some embodiments, the indoor side has an indoor air supply duct 31, and the lower part of the indoor air supply duct 31 forms an accommodating space (not indicated in the figure) between it and the middle partition 2, and the fresh air device 1 is located in the accommodating space.

[0052] In this technical solution, the fresh air device 1 is placed in the space between the lower part of the indoor air supply duct 31 and the middle partition 2. Since this space is objectively a necessary part of the structure of the indoor air supply duct 31, making full use of this space will not increase the overall size of the air conditioner, thereby making the air conditioner structure of the present invention more compact and smaller in size.

[0053] In some embodiments, a fresh air supply port (not indicated in the figure) is formed on the duct wall of the indoor air supply duct 31, and the fresh air outlet 102 is connected to the fresh air supply port.

[0054] In this technical solution, a fresh air outlet that connects to the fresh air outlet 102 is directly formed on the duct wall of the indoor air supply duct 31, which can further simplify the structural design of the air conditioner. At the same time, the indoor fan 33 can be used to drive the introduction of fresh air and ensure the increase of fresh air volume on the indoor side.

[0055] See details Figure 4 As shown, in a specific embodiment, the aforementioned fresh air outlet is specifically located in the indoor air supply duct 31 corresponding to the area between the indoor fan 33 and the indoor heat exchanger 32. In this way, the indoor return air and the outdoor fresh air can be evenly mixed in the indoor fan 33 before being blown out into the indoor space, thereby improving the user experience.

[0056] In another specific embodiment, an auxiliary electric heater 34 is also provided on the indoor side to assist in heating the airflow when the air conditioner is running in heating mode, thereby improving the heating effect.

[0057] See Figure 6 As shown, in some embodiments, the outlet 21 has an air guide frame 211 formed on the indoor side. The air guide frame 211 can match and fit against the outer side of the fresh air volute 111 (i.e., the outer wall of the air duct). In a specific embodiment, the aforementioned air guide frame 211 is integrally formed from the partition plate 2 by stamping and bending, which simplifies the forming process of the air guide frame 211 and ensures its sealing and air guiding performance.

[0058] In this technical solution, the flow port 21 is fitted and matched with the outer side of the fresh air volute 111 through the air guide frame 211, which can ensure that the fresh air introduced is leak-free when the fresh air duct housing 11 is in the flow position.

[0059] In some embodiments, the partition 2 has a bent section 22 that can block one end of the fresh air duct housing 11 and extends toward the indoor side. The fresh air device 1 also includes a first drive motor 13 (e.g., a rotary stepper motor) for driving the fresh air volute 111 to rotate. The fresh air fan 12 includes a second drive motor 14 (e.g., a rotary stepper motor) that drives the fan blades 121 to a first end. Both the first drive motor 13 and the second drive motor 14 are mounted on the wall surface of the bent section 22 away from the inner side of the fresh air duct housing 11. Specifically, the bending angle of the bent section 22 can be designed to be 90°. See details. Figure 3 As shown, the aforementioned second drive motor 14 is located inside a motor protective cover, which includes a motor housing 141 and a motor end cover 142 that are interlocked.

[0060] In this technical solution, by setting a bending section 22 on the partition plate 2, the bending section 22 can seal the shaft end of the fresh air duct housing 11 to prevent fresh air leakage. At the same time, it also serves as the assembly carrier for the aforementioned first drive motor 13 and second drive motor 14, further simplifying the internal structural design of the air conditioner and further improving the structural compactness.

[0061] See also Figure 2 and Figure 3 As shown, in some embodiments, the output shaft of the first drive motor 13 has a drive gear 131, and the end of the fresh air volute 111 corresponding to the position of the first drive motor 13 is formed with a driven gear ring 1111. The drive gear 131 meshes with the driven gear ring 1111. The driven gear ring 1111 is specifically integrally formed on the fresh air volute 111, which can be achieved by an integral injection molding process.

[0062] In this technical solution, a driven gear ring 1111 is set at one side shaft end of the fresh air volute 111, and a reliable transmission connection between the two is formed by the meshing of the active gear 131 on the output shaft of the first drive motor 13, making the control more reliable and precise.

[0063] In one specific embodiment, the fan blade 121 is a cross-flow fan blade, which can ensure the increase of fresh air volume by selecting different axial lengths.

[0064] In one specific embodiment, the second end of the fan blade 121 is supported on the chassis 4 of the air conditioner via a support rotation frame 16. It is understood that the aforementioned fresh air duct housing 11 and the second end of the aforementioned fan blade 121 are fitted together and supported on the support rotation frame 16 to ensure that the position of the fresh air device 1 is stable and reliable.

[0065] See details Figure 7As shown, in some embodiments, the integrated air conditioner further includes an indoor heat exchanger 32, an outdoor heat exchanger 51, and a throttling element 52 connected in series between the indoor heat exchanger 32 and the outdoor heat exchanger 51. The throttling element 52 (specifically, for example, an electronic expansion valve) is connected to the indoor heat exchanger 32 through a first pipeline (not labeled in the figure), and a first on / off valve 61 is provided on the first pipeline. A fresh air heat exchanger 15 is provided on the indoor side of the outlet 21. The indoor heat exchanger 32 and the outdoor heat exchanger 51 are also connected through a second pipeline (not labeled in the figure). The second pipeline is connected in parallel with the first pipeline. The fresh air heat exchanger 15 and the second on / off valve 62 are connected in series on the second pipeline. The aforementioned first on / off valve 61 and second on / off valve 62 can be electromagnetic on / off valves.

[0066] In this technical solution, the first pipeline and the second pipeline are connected in parallel between the indoor heat exchanger 32 and the throttling element 52. In this way, the flow of refrigerant in the first pipeline or the second pipeline can be controlled by controlling the on / off state of the first on / off valve 61 and the second on / off valve 62, thereby achieving the selection of the working state of the fresh air heat exchanger 15.

[0067] See details Figure 8 As shown in the figure, the integrated air conditioner of this application is operating in heating mode. When no fresh air needs to be introduced, or only fresh air needs to be introduced without preheating, the second on-off valve 62 can be shut off and the first on-off valve 61 can be opened. Thus, no refrigerant flows through the fresh air heat exchanger 15, and the indoor heat exchanger 32 operates normally in heating mode. When fresh air needs to be introduced and requires a lower level of preheating, both the first on-off valve 61 and the second on-off valve 62 can be opened simultaneously. At this time, refrigerant flows through the fresh air heat exchanger 15, but due to the diversion effect of the first and second pipes, the heating capacity of the fresh air heat exchanger 15 is relatively small, thus achieving low-level heating. When fresh air needs to be introduced and requires a higher level of preheating, the second on-off valve 62 is opened while the first on-off valve 61 is shut off, allowing all the refrigerant to flow into the fresh air heat exchanger 15 through the second on-off valve 62, thereby achieving high-level preheating of the introduced fresh air.

[0068] See details Figure 9 The above, with Figure 8 When the states shown are different, the figure shows the state of the integrated air conditioner of this application in the cooling mode. At this time, when the refrigerant flows in the fresh air heat exchanger 15, it will form a cooling effect on the introduced fresh air, thereby achieving the purpose of dehumidifying the introduced fresh air. The control strategy for the first on / off valve 61 and the second on / off valve 62 is similar to that in the heating mode, and will not be described in detail here.

[0069] According to an embodiment of the present invention, a control method for the above-described integrated air conditioner with a fresh air device is also provided, comprising the following steps:

[0070] Obtain the operating mode of the air conditioner;

[0071] When the operating mode is the fresh air introduction mode, the fresh air duct housing 11 is controlled to rotate by a preset angle along the first rotation direction to open the fresh air inlet 101; or...

[0072] When the operating mode is the end of the fresh air introduction mode, the fresh air duct housing 11 is controlled to rotate by a preset angle in the opposite direction to the first rotation direction, so that the fresh air inlet 101 is closed, preventing the low-quality outdoor air from entering the indoor side through the fresh air device 1.

[0073] In some embodiments, when the air conditioner includes a fresh air heat exchanger 15:

[0074] When high-level dehumidification is achieved during the operation of the fresh air introduction mode, the air conditioner is controlled to operate in cooling mode, and the first on-off valve 61 is cut off while the second on-off valve 62 is opened; or,

[0075] When low-level dehumidification is detected during the operation of the fresh air introduction mode, the air conditioner is controlled to operate in cooling mode, and both the first on-off valve 61 and the second on-off valve 62 are controlled to be open; or,

[0076] When high-level fresh air preheating is obtained during the operation of the fresh air introduction mode, the air conditioner is controlled to operate in heating mode, and the first on-off valve 61 is cut off and the second on-off valve 62 is opened; or,

[0077] When low-level fresh air preheating is obtained during the operation of the fresh air introduction mode, the air conditioner is controlled to operate in heating mode, and both the first on-off valve 61 and the second on-off valve 62 are controlled to be open.

[0078] When there is no need to dehumidify or preheat the introduced fresh air, simply control the first on / off valve 61 to open and the second on / off valve 62 to close.

[0079] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0080] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An integrated air conditioner with a fresh air unit, characterized in that, The air conditioner includes a fresh air unit (1), which includes a fresh air duct housing (11) and a fresh air fan (12) located in the duct of the fresh air duct housing (11). The fresh air duct housing (11) has a fresh air inlet (101) and a fresh air outlet (102). The integrated air conditioner also includes a partition (2) that divides its internal space into an indoor side and an outdoor side. The partition (2) has an outlet (21) that is connected to the fresh air inlet (101). The fresh air duct housing (11) can be driven to rotate to switch between a flow-through position and a cut-off position. When the fresh air duct housing (11) is in the flow-through position... The fresh air inlet (101) is connected to the outlet (21). When the fresh air duct housing (11) is in the cut-off position, the outlet (21) blocks the fresh air duct housing (11). The fresh air duct housing (11) includes a fresh air volute (111) and a fresh air volute tongue (112) that are assembled with each other. When the fresh air duct housing (11) is in the cut-off position, the fresh air volute (111) blocks the outlet (21). The outlet (21) has a guide frame (211) on the indoor side. The guide frame (211) can match and fit against the outer surface of the fresh air volute (111).

2. The integrated air conditioner according to claim 1, characterized in that, The fresh air device (1) is located on the indoor side.

3. The integrated air conditioner according to claim 2, characterized in that, The indoor side has an indoor air supply duct (31), and the lower part of the indoor air supply duct (31) forms an accommodating space with the middle partition (2), and the fresh air device (1) is located in the accommodating space.

4. The integrated air conditioner according to claim 3, characterized in that, A fresh air inlet is formed on the duct wall of the indoor air supply duct (31), and the fresh air outlet (102) is connected to the fresh air inlet.

5. The integrated air conditioner according to claim 1, characterized in that, The partition (2) has a bent section (22) that can block one end of the fresh air duct housing (11) and extend toward the indoor side. The fresh air device (1) also includes a first drive motor (13) for driving the fresh air volute (111) to rotate and move. The fresh air fan (12) includes a second drive motor (14) that drives the first end of the fan blade (121). The first drive motor (13) and the second drive motor (14) are both assembled on the wall surface of the bent section (22) away from the inner side of the fresh air duct housing (11).

6. The integrated air conditioner according to claim 5, characterized in that, The first drive motor (13) has a drive gear (131) on its output shaft, and the fresh air volute (111) has a driven gear ring (1111) at the end corresponding to the position of the first drive motor (13), and the drive gear (131) meshes with the driven gear ring (1111); and / or, the fan blade (121) is a cross-flow fan blade; and / or, the second end of the fan blade (121) is supported on the chassis (4) of the air conditioner via a support rotation frame (6).

7. The integrated air conditioner according to claim 1, characterized in that, It also includes an indoor heat exchanger (32), an outdoor heat exchanger (51), and a throttling element (52) connected in series between the indoor heat exchanger (32) and the outdoor heat exchanger (51). The throttling element (52) is connected to the indoor heat exchanger (32) through a first pipeline and a first shut-off valve (61) is provided on the first pipeline. A fresh air heat exchanger (15) is provided on the side of the inlet (21) located on the indoor side. The indoor heat exchanger (32) and the outdoor heat exchanger (51) are also connected through a second pipeline. The second pipeline is connected in parallel with the first pipeline. The fresh air heat exchanger (15) and the second shut-off valve (62) are connected in series on the second pipeline. And / or, the integrated air conditioner is one of a wall-mounted air conditioner, a window air conditioner, or a portable air conditioner.

8. A control method for controlling an integrated air conditioner with a fresh air device as described in any one of claims 1 to 7, characterized in that, Includes the following steps: Obtain the operating mode of the air conditioner; When the operating mode is the fresh air introduction mode, the fresh air duct housing (11) is controlled to rotate by a preset angle along the first rotation direction to open the fresh air inlet (101); or, When the operating mode is the end of fresh air introduction mode, the fresh air duct housing (11) is controlled to rotate by a preset angle in the opposite direction to the first rotation direction so that the fresh air inlet (101) is closed.

9. The control method according to claim 8, characterized in that, When the air conditioner includes a fresh air heat exchanger (15): When high-level dehumidification is obtained during the operation of the fresh air introduction mode, the air conditioner is controlled to run in cooling mode, and the first on-off valve (61) is cut off and the second on-off valve (62) is opened. or, When low-level dehumidification is obtained during the operation of the fresh air introduction mode, the air conditioner is controlled to operate in cooling mode, and both the first on / off valve (61) and the second on / off valve (62) are controlled to be open; or, When high-level fresh air preheating is obtained during the operation of the fresh air introduction mode, the air conditioner is controlled to operate in heating mode, and the first on-off valve (61) is cut off and the second on-off valve (62) is opened. or, When the air conditioner is preheated with low-level fresh air during the operation of the fresh air introduction mode, it is controlled to operate in heating mode, and both the first on / off valve (61) and the second on / off valve (62) are turned on.

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