Duct structure, fresh air module and air conditioner

Abstract

The present invention discloses a duct structure, a fresh air module and an air conditioner, wherein the duct structure comprises a first end, the first end being provided with a pipe interface; a second end, the second end being provided with an air inlet and an air outlet; a connecting pipe, the connecting pipe being located between the first end and the second end, the connecting pipe having a first air connection port and a second air connection port that are connected to each other, the first air connection port being connected to the pipe interface; and a driving mechanism, the driving mechanism being connected to the connecting pipe and used to drive the second air connection port to move so that the second air connection port is connected to the air inlet or the air outlet. A single pipe interface can be connected to the air inlet and the air outlet respectively through the connecting pipe to achieve switching, and the pipe interface is used for both exhaust and air intake. In application, the fresh air duct is connected to the pipe interface to achieve single-pipe air intake and exhaust, without the need to add additional wall holes, and without increasing user costs.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air duct structure, a fresh air module, and an air conditioner. Background Art

[0002] In the related art, the indoor unit of the air conditioner is equipped with a fresh air module, through which outdoor air can enter the indoor space, avoiding turbidity of indoor air and improving user experience. At present, the single-tube air intake structure or the double-tube air intake and exhaust structure are mainly used. If the single-tube air intake structure is used, the indoor polluted air cannot be discharged. When the indoor carbon dioxide concentration is too high, the indoor air will appear dull and the comfort is poor; if the double-tube air intake and exhaust structure is used, there is an extra pipe and connection structure, which increases the structural cost. At the same time, after-sales installation requires an additional wall hole, and the user needs to pay an additional hole drilling fee, which is high in installation cost. Summary of the invention

[0003] The present invention aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the present invention provides an air duct structure that can realize single-tube air intake and exhaust, which can be used to introduce outdoor fresh air and exhaust indoor polluted air without increasing user costs.

[0004] The present invention also provides a fresh air module having the above-mentioned air duct structure.

[0005] The present invention further provides an air conditioner having the fresh air module.

[0006] According to a first aspect of an embodiment of the present invention, there is provided an air duct structure, comprising a first end portion, the first end portion being provided with a pipe interface; a second end portion, the second end portion being provided with an air inlet and an air outlet; a connecting pipe, the connecting pipe being located between the first end portion and the second end portion, the connecting pipe having a first air receiving port and a second air receiving port that are connected to each other, the first air receiving port being connected to the pipe interface; and a driving mechanism, the driving mechanism being connected to the connecting pipe and being used for driving the second air receiving port to move so that the second air receiving port is connected to the air inlet or the air outlet.

[0007] The above-mentioned air duct structure has at least the following beneficial effects: the driving mechanism drives the second air connection port of the connecting pipe to move, so that the pipe interface can be connected to the air inlet or the air outlet, and the second air connection port can be switched and connected between the air inlet and the air outlet. If it is necessary to exhaust the indoor polluted air, the driving mechanism drives the second air connection port to connect to the air outlet, and the indoor polluted air flows from the air outlet to the connecting pipe and is discharged to the outside; if it is necessary to add fresh air to the room, the driving mechanism drives the second air connection port to connect to the air inlet, and the outdoor fresh air flows from the outside to the connecting pipe and is sent into the room through the air inlet. A single pipe interface can be connected to the air inlet and the air outlet respectively through the connecting pipe to achieve switching. The pipe interface is used for both exhaust and air intake. In application, the fresh air pipe is connected to the pipe interface to realize single-pipe air intake and exhaust without the need to add additional wall holes.

[0008] According to the air duct structure of the first embodiment of the present invention, the driving mechanism drives the connecting pipe to rotate so as to move the second air receiving port. By rotating the connecting pipe, the second air receiving port of the connecting pipe can be moved quickly and switched between the air inlet and the air outlet.

[0009] According to the air duct structure described in the embodiment of the first aspect of the present invention, the connecting pipe includes a pipe section, a first pipe end arranged at one end of the pipe section, and a second pipe end arranged at the other end of the pipe section, the first air receiving port is arranged at the first pipe end, the second air receiving port is arranged at the second pipe end, the driving mechanism drives the first pipe end to rotate so as to move the second air receiving port, and at least a part of the central axis of the pipe section has an angle with the rotation axis of the first pipe end. During the rotation of the connecting pipe, the first pipe end rotates, and at least a part of the central axis of the pipe section has an angle with the rotation axis of the first pipe end, thereby driving the position of the second pipe end to change, and realizing the movement of the second air receiving port.

[0010] According to the air duct structure described in the embodiment of the first aspect of the present invention, the first end portion includes a first plate, the pipe interface is arranged on the first plate, the second end portion includes a second plate arranged in parallel with the first plate, the air inlet and the air outlet are arranged on the second plate, and the end face of the first pipe end and the end face of the second pipe end are arranged in parallel. The first plate and the second plate arranged in parallel with each other can make the structure of the first end portion and the second end portion simpler, and the end face of the first pipe end and the end face of the second pipe end are parallel, and during the rotation of the second pipe end, the end face of the second pipe end moves on a plane, so that the air inlet and the air outlet on the second end can be switched and connected more smoothly.

[0011] According to the air duct structure described in the embodiment of the first aspect of the present invention, the driving mechanism includes a driven gear arranged at the first pipe end and a driving source driving the driven gear to rotate, and the driven gear drives the first pipe end to rotate so as to rotate the connecting pipe. By driving the driven gear, the connecting pipe is driven to rotate, and the driving mechanism has a compact structure and a small driving load.

[0012] According to the air duct structure described in the embodiment of the first aspect of the present invention, the first pipe end is circular, the first pipe end has a first flange extending radially outward, and the first end is provided with a first annular groove for the first flange to be embedded in. The cooperation between the first annular groove and the first flange can prevent the circular first pipe end from shifting during the self-rotation process, thereby ensuring that the first air inlet of the connecting pipe is connected to the pipe interface.

[0013] According to the air duct structure described in the embodiment of the first aspect of the present invention, the second pipe end is equipped with a rotating shaft, the axis of the rotating shaft is colinear with the rotating axis of the first pipe end, and the driving mechanism drives the first pipe end to rotate, so that the second pipe end can rotate around the rotating shaft. The setting of the rotating shaft can make the second pipe end rotate more smoothly during rotation, and can quickly switch the second air inlet between the air inlet and the air outlet.

[0014] According to the air duct structure described in the embodiment of the first aspect of the present invention, the second end is provided with a second annular groove, the second annular groove is coaxial with the rotation axis, the air inlet and the air outlet are both located in the second annular groove, and the second pipe end is provided with a slide plate embedded in the second annular groove. During the rotation of the second pipe end around the rotation axis, the rotating outer side of the second pipe end can be limited by the slide plate, so that the second pipe end does not shake during the rotation process.

[0015] According to a second aspect of an embodiment of the present invention, a fresh air module is provided, comprising an air duct structure as described in any one of claims 1 to 3, an air duct passage is provided between the first end and the second end to connect to the interior of the room, the air duct passage is connected to either the air inlet or the air outlet; a fresh air duct, the fresh air duct is installed at the pipe interface; a shell, the shell is connected to the second end, an air duct flow path is provided between the shell and the second end, one end of the air duct flow path is connected to the air inlet, and the other end is connected to the air outlet; and a guide fan, the guide fan is arranged in the shell to make the airflow of the air duct flow path flow from the air inlet to the air outlet.

[0016] The above-mentioned fresh air module has at least the following beneficial effects: the fresh air module with the above-mentioned air duct structure, when the driving mechanism drives the second air connection port to connect to the air outlet, the guide fan guides the indoor polluted air into the air duct flow path through the air duct passage and the air inlet in sequence, and then sends it to the outside through the air outlet, the connecting pipe and the fresh air duct in sequence; when the driving mechanism drives the second air connection port to connect to the air inlet, the guide fan guides the outdoor fresh air into the air duct flow path through the fresh air duct, the connecting pipe and the air inlet in sequence, and then sends it to the room through the air outlet and the air duct passage in sequence. The fresh air module only needs one fresh air duct to realize single-tube air intake and exhaust, without the need to add additional wall holes.

[0017] According to the fresh air module described in the second embodiment of the present invention, the second air inlet is moved by the driving mechanism to switch between a first state and a second state, wherein the first state is that the second air inlet is connected to the air outlet, and the air inlet is connected to the air duct; the second state is that the second air inlet is connected to the air inlet, and the air outlet is connected to the air duct. The first state corresponds to exhausting air through the fresh air duct, and the second state corresponds to taking in air through the fresh air duct. By moving the second air inlet, the fresh air module can have two connection modes, the first state and the second state, and can be switched between the first state and the second state.

[0018] According to a third aspect of an embodiment of the present invention, there is provided an air conditioner, comprising a housing; a fresh air module as claimed in claim 1 or 2, wherein the fresh air module is arranged in the housing; and a fresh air channel, wherein the fresh air channel is connected to the air duct passage.

[0019] The above-mentioned air conditioner has at least the following beneficial effects: by applying the fresh air module described in the second aspect of the present invention, indoor polluted air can be sent into the fresh air duct through the fresh air module for discharge, and outdoor fresh air can be sent into the room through the fresh air module and the fresh air duct. When installing the air conditioner, only one wall hole needs to be drilled for the fresh air duct, and there is no need to add additional wall holes, which will not increase the user's installation cost.

[0020] According to the air conditioner of the third aspect of the present invention, a second fan is provided at the end of the fresh air channel, and the housing is provided with at least one fresh air outlet for the second fan to discharge air. After the second fan is started, the airflow in the fresh air channel can be further guided to the fresh air outlet, so that the airflow flows more smoothly.

[0021] The air conditioner according to the third aspect of the present invention further comprises a purification module, which is arranged in the fresh air passage to purify the airflow in the fresh air passage. The purification module can purify the airflow in the fresh air passage, and then send it out from the fresh air outlet after purification, thereby improving the cleanliness and the comfort of user experience.

[0022] According to the air conditioner of the third aspect of the present invention, the housing is provided with at least one purified air inlet connected to the fresh air passage, and the purified air inlet is connected to the fresh air passage. While introducing fresh air, indoor air can also be introduced to the purification module for purification; or indoor air can be purified separately.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0025] Figure 1 A perspective view of an air duct structure according to an embodiment of the present invention;

[0026] Figure 2 A perspective view of a fresh air module according to an embodiment of the present invention Figure 1 , wherein the second air inlet is connected to the air outlet;

[0027] Figure 3 A perspective view of a fresh air module according to an embodiment of the present invention Figure 2 , wherein the second air inlet is connected to the air inlet;

[0028] Figure 4 The structure explosion of the fresh air module of the embodiment of the present invention Figure 1 , wherein the second air inlet is connected to the air outlet;

[0029] Figure 5 The structure explosion of the fresh air module of the embodiment of the present invention Figure 2 , wherein the second air inlet is connected to the air inlet;

[0030] Figure 6 A perspective view of a fresh air module according to an embodiment of the present invention Figure 1 , wherein the second air inlet is connected to the air outlet;

[0031] Figure 7 A cross-sectional view of a fresh air module according to an embodiment of the present invention Figure 2 , wherein the second air inlet is connected to the air inlet;

[0032] Figure 8 is a perspective view of an air conditioner according to an embodiment of the present invention;

[0033] Fig. 9 is a schematic diagram of the internal structure of an air conditioner according to an embodiment of the present invention;

[0034] Fig.10 is a cross-sectional view of an air conditioner according to an embodiment of the present invention;

[0035] Fig.11Schematic diagram of air flow in the sewage exhaust mode of an embodiment of the present invention;

[0036] Fig.12 Schematic diagram of air flow in a fresh air intake mode according to an embodiment of the present invention;

[0037] Fig.13 Schematic diagram of air flow in a purification mode according to an embodiment of the present invention;

[0038] Fig.14 Schematic diagram of air flow in fresh air intake and purification mode according to an embodiment of the present invention.

[0039] Reference numerals:

[0040] Housing 100, purification air inlet 111, purification air inlet rotating plate 112, second fan 101, fresh air channel 102, purification module 103, formaldehyde removal module 104, fresh air outlet 121,

[0041] Fresh air pipe 211, pipe joint 212, wire mesh 213,

[0042] Duct structure 300, switching bracket 310, first end 311, first annular groove pressing plate 312, second annular groove pressing plate 313, first annular groove 314, second annular groove 315, connecting pipe 321, first air receiving port 322, second air receiving port 323, first flange 324, slide plate 325, rotating shaft 326, driving mechanism 330, motor 331, driving gear 332, driven gear 333, air duct passage 341, pipe interface 342, connecting port 343, air inlet 344, air outlet 345,

[0043] Fresh air module 400 , second end 411 , housing 412 , guide fan 413 , air duct flow path 414 . DETAILED DESCRIPTION

[0044] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0045] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0047] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0048] The existing fresh air modules mainly adopt a single-tube air intake structure or a double-tube air intake and exhaust structure. If a single-tube air intake structure is adopted, the indoor polluted air cannot be discharged. When the indoor carbon dioxide concentration is too high, the indoor air becomes stuffy and the comfort is poor. If a double-tube air intake and exhaust structure is adopted, an additional pipe and connection structure are added, and the structural cost increases. At the same time, after-sales installation requires an additional wall hole, and the user needs to pay an additional fee for punching an extra hole, which results in high installation cost.

[0049] Refer to the following Figures 1 to 14 , describing a fresh air module 400 according to an embodiment of the present invention, the fresh air module 400 can be arranged in an air conditioner, specifically, can be arranged in an indoor unit of the air conditioner.

[0050] Reference below Figures 1 to 7 , describing an air duct structure 300 according to an embodiment of the present invention, the air duct structure 300 can be arranged in a fresh air module.

[0051] like Figures 1 to 7 As shown, the air duct structure according to the embodiment of the present invention includes a first end portion 311 , a second end portion 411 , a connecting pipe 321 and a driving mechanism 330 .

[0052] like Figure 1 and Figure 7 As shown, the switching bracket 310 is installed on the second end 411 , the first end 311 is a part of the switching bracket 310 , and the connecting pipe 321 is located between the first end 311 and the second end 411 .

[0053] The first end 311 is provided with a pipe interface 342, and the second end 411 is provided with an air inlet 344 and an air outlet 345. Figures 2 to 4 It is understood that the connecting pipe 321 is located in the switching bracket 310 , and the connecting pipe 321 has a first air receiving port 322 and a second air receiving port 323 that are connected to each other. The first air receiving port 322 is connected to the pipe interface 342 , that is, the pipe interface 342 is connected to the second air receiving port 323 .

[0054] The first end 311 includes a first plate, the pipe interface 342 is arranged on the first plate, and the second end 411 includes a second plate, the air inlet 344 and the air outlet 345 are arranged on the second plate. In this arrangement, the structures of the first end 311 and the second end 411 are simpler, such as Figure 1 As shown, one end of the switching bracket 310 is the first plate of the first end 311 , and the other end of the switching bracket 310 is connected to the second plate of the second end 411 .

[0055] like Figure 2 As shown, the driving mechanism 330 is installed on the switching bracket 310 , and the driving mechanism 330 is connected to the connecting pipe 321 , and is used to drive the second air receiving port 323 to move so that the second air receiving port 323 is connected to the air inlet 344 or the air outlet 345 .

[0056] The air duct structure 300 of the embodiment of the present invention can be arranged in the fresh air module. If it is necessary to exhaust the indoor polluted air, the driving mechanism 330 drives the second air inlet 323 to connect to the air outlet 345, and the indoor polluted air can flow from the air outlet 345 to the connecting pipe 321 and be discharged outdoors; if it is necessary to add fresh air to the room, the driving mechanism 330 drives the second air inlet 323 to connect to the air inlet 344, and the outdoor fresh air can flow into the air inlet 344 through the connecting pipe 321, and the outdoor fresh air is sent into the room. The air duct structure 300 of the embodiment of the present invention can connect the air inlet and the air outlet respectively by setting the connecting pipe 321, and only one pipe interface 342 is set to realize switching. The pipe interface 342 is used for both exhaust and air intake. In the air duct structure 300 of the embodiment of the present invention, it is only necessary to connect the fresh air duct with the pipe interface 342 to realize single-tube air intake and exhaust.

[0057] In the current related technology, the fresh air module adopts a double-pipe air intake and exhaust structure, which can be understood as a fresh air module with a fresh air duct for air intake and an exhaust duct for air exhaust. The air duct structure 300 of the embodiment of the present invention can be applied to the current fresh air module to achieve single-pipe air intake and exhaust.

[0058] Specifically, the driving mechanism 330 drives the connecting pipe 321 to rotate so as to move the second air receiving port 323. Figure 1 , Figure 6 and Figure 7The connecting pipe 321 includes a pipe section, a first pipe end arranged at one end of the pipe section, and a second pipe end arranged at the other end of the pipe section. The first air receiving port 322 is arranged at the first pipe end, and the second air receiving port 323 is arranged at the second pipe end. The driving mechanism 330 drives the first pipe end to rotate so as to move the second air receiving port 323. Furthermore, at least a part of the central axis of the pipe section and the rotation axis of the first pipe end have an angle. Therefore, during the rotation of the connecting pipe 321, the first pipe end rotates. Since at least a part of the central axis of the pipe section and the rotation axis of the first pipe end have an angle, the position of the second pipe end will inevitably change, thereby realizing the movement of the second air receiving port 323.

[0059] It is understandable that reference can be made to Figure 6 and Figure 7 The pipe section has an oblique opening at one end where the first pipe end is arranged, so that the central axis of the pipe section and the rotation axis of the first pipe end have an angle. Of course, in some other embodiments, the pipe section can be bent so that the central axis of the middle part and the rotation axis of the first pipe end have an angle, or the central axis of the part where the second pipe end is arranged and the rotation axis of the first pipe end have an angle. Even if the central axis of the part where the first pipe end is arranged coincides with the rotation axis of the first pipe end, the position of the second pipe end can also be driven to change.

[0060] In addition, the first plate and the second plate are both in the form of flat plates, the first plate and the second plate are arranged in parallel, and the end face of the first tube end and the end face of the second tube end are arranged in parallel. Specifically, the two ends of the tube section can have oblique openings of the same angle, so that the end face of the first tube end and the end face of the second tube end are parallel, and the end face of the first tube end and the end face of the second tube end are parallel. During the rotation of the second tube end, the end face of the second tube end moves on a plane, and the air inlet and the air outlet on the second end 411 can be switched and connected more smoothly, that is, the second air inlet 323 can be smoothly connected with the air inlet 344, or smoothly connected with the air outlet 345 during the movement, so as to achieve rapid switching.

[0061] Of course, in some other embodiments, the first end 311 can adopt other structural forms, such as a frame structure, and a pipeline is installed on the frame structure, and the pipe interface 342 is set at the end of the pipeline. Similarly, the second end 411 can also adopt a similar structural form. Therefore, it cannot be understood that the first plate is the only structure of the first end 311, nor can it be understood that the second plate is the only structure of the second end 411.

[0062] In some other embodiments, the end surface of the first tube end and the end surface of the second tube end may also be arranged non-parallel. In this case, during the rotation of the first tube end, the movement trajectory of the end surface of the second tube end is similar to a cone, and the second end portion 411 is provided with an air inlet and an air outlet adapted thereto. Of course, the end surface of the second tube end needs to be arranged as a curved surface. This arrangement of the connecting tube 321 can also realize the movement of the second air receiving port 323.

[0063] Please refer to Figure 4 The driving mechanism 330 specifically includes a driven gear 333 disposed at the first pipe end and a driving source for driving the driven gear 333 to rotate. The driven gear 333 drives the first pipe end to rotate, so that the connecting pipe 321 rotates. In some embodiments, the driving source is a motor 331 installed on the switching bracket 310. The output shaft of the motor 310 is connected to a driving gear 332. The driving gear 332 is meshed with the driven gear 333. When the motor 331 is started, the connecting pipe 321 is driven to rotate through the mutually meshing driving gear 332 and the driven gear 333, so that the position of the second air inlet 323 is moved.

[0064] like Figure 2 , Figure 4 , Figure 6 As shown, at this time, the second air inlet 323 is connected to the air outlet 345; Figure 2 In the direction of the arrow shown, the driving source drives the connecting pipe 321 to rotate, and the second air receiving port 323 is connected to the air inlet 344, that is, Figure 3 , Figure 5 , Figure 7 Then, press Figure 3 In the direction of the arrow shown, the driving source drives the connecting pipe 321 to rotate, and the second air receiving port 323 is connected to the air outlet 345 again.

[0065] It should be noted that the driving mechanism is not limited to the gear transmission method. In some other embodiments, the driving mechanism can adopt other transmission forms, such as belt transmission and chain transmission, which can drive the connecting tube 321 to rotate.

[0066] During the rotation of the connecting tube 321, a limiting assembly is provided on the switching bracket 310 to limit the connecting tube 321, so that the connecting tube 321 can rotate more smoothly. In this embodiment, the first tube end and the second tube end are both round, which can be understood as the tube section is made of a round tube.

[0067] like Figure 1 , Figures 4 to 7The first pipe end has a first flange 324 extending radially outward, and the first end 311 is provided with a first annular groove 314 for the first flange 324 to be embedded in. In this way, the first pipe end will not shift during the rotation process through the cooperation between the first annular groove 314 and the first flange 324, so as to ensure that the first air inlet 322 of the connecting pipe 321 is always connected with the pipe interface 342. Specifically, the first end 311 is installed with a first annular groove pressing plate 312 at the pipe interface 342, and the first annular groove pressing plate 312 is provided with an annular notch. After the first annular groove pressing plate 312 is installed on the first end 311, the annular notch provided on the first annular groove pressing plate 312 faces the first end 311, thereby forming the first annular groove 314 on one side of the first end 311.

[0068] like Figure 1 , Figures 5 to 7 The second pipe end is provided with a rotating shaft 326, the axis of which is colinear with the rotating axis of the first pipe end. The driving mechanism 330 drives the first pipe end to rotate, so that the second pipe end can rotate around the rotating shaft 326. Accordingly, the second end portion 411 has an axial hole for inserting the rotating shaft 326. It can be understood that the cooperation between the first annular groove 314 and the first flange 324 is to axially limit and radially limit the first pipe end; the second pipe end is axially limited by the rotating shaft 326, that is, the second pipe end always rotates around the rotating shaft 326.

[0069] In addition, as a preferred embodiment, the second pipe end is radially limited, specifically, the second end portion 411 is provided with a second annular groove 315, the second annular groove 315 is coaxial with the rotation axis 326, the air inlet 344 and the air outlet 345 are both located in the second annular groove 315, and the second pipe end is provided with a slide plate 325 embedded in the second annular groove 315. It can be understood that during the rotation of the second pipe end, the inner end of the rotation is axially limited by the rotation axis 326, and the outer end of the rotation is radially limited by the cooperation between the slide plate 325 and the second annular groove 315, so that the second pipe end does not shake during the rotation process. It should be noted that in practice, the second pipe end can be provided with a second flange extending radially outward, and the slide plate 325 is a part of the second flange, because during the rotation of the second pipe end, only a part of the second flange is embedded in the second annular groove 315 for sliding. Among them, the switching bracket 310 is installed with a second annular groove pressure plate 313 on the side connected to the second end 411, and the second annular groove pressure plate 313 is provided with an annular groove. The second annular groove pressure plate 313 can be integrally formed with the switching bracket 310. After the switching bracket 310 is connected to the second end 411, the annular groove provided on the second annular groove pressure plate 313 faces the second end 411, thereby forming the second annular groove 315 on the side of the second end 411.

[0070] By rotating the connecting tube 321, the first air inlet 322 of the connecting tube 321 can be always connected to the tube interface 342, and the position of the second air inlet 323 of the connecting tube 321 can be moved to connect to the air inlet 344 or the air outlet 345, thereby realizing rotation switching, and the overall structure of the driving mechanism 330 is compact and does not occupy too much internal space.

[0071] It should be noted that the movement mode of the second air inlet 323 is not limited to this. In some other embodiments, the second air inlet 323 can also be translated so that the second air inlet 323 is connected to the air inlet 344 or the air outlet 345. For example, the mobile tube 321 can be set as a flexible tube, and a translation mechanism can be set to translate the second tube end of the mobile tube 321, so as to move the second air inlet 323. Of course, there are many styles of translation mechanisms, such as using a gear rack mechanism to translate the second air inlet 323 of the mobile tube 321, and using a guide rail slider to limit the position.

[0072] Reference Figures 2 to 7 The fresh air module according to the embodiment of the present invention comprises the above-mentioned air duct structure 300, the fresh air duct 211, the shell 412 and the guide fan 413, wherein the fresh air duct 211 is installed at the pipe interface 342. The shell 412 is connected to the second end 411, and an air duct flow path 414 is provided between the shell 412 and the second end 411. One end of the air duct flow path 414 is connected to the air inlet 344, and the other end is connected to the air outlet 345. The guide fan 413 is arranged in the shell 412 so that the air flow of the air duct flow path 414 flows from the air inlet 344 to the air outlet 355.

[0073] Specifically, when the fresh air module 400 is working, the guide fan 423 can rotate in the air duct flow path 414 to form a negative pressure in the air duct flow path 414. Under the action of the negative pressure, the airflow can enter the air duct flow path 414 through the air inlet 344 and flow in the air duct flow path 414, and the fresh air flow can flow out through the air outlet 345 after completing the flow in the air duct flow path 414.

[0074] like Figure 6 and Figure 7 As shown, there is an air duct 341 between the first end 311 and the second end 411 to connect to the room, and the air duct 341 is connected to either the air inlet 344 or the air outlet 345. Figure 1 , Figure 4 and Figure 5 The switching bracket 310 is an integrated bracket, one end of which is the first end 311, and the other end is connected to the second end 411, and the two sides are interconnected, that is, the first end 311 is a part of the switching bracket 310, and the switching bracket 310 is formed with an air duct passage 341, and the switching bracket 310 has connecting openings 343 on both sides of the air duct passage 341.

[0075] The second air receiving port 323 is moved by the driving mechanism 330 to switch between the first state and the second state.

[0076] The first state is Figure 6 As shown, the corresponding exhaust is carried out through the fresh air duct 211, the second air connection port 323 is connected to the air outlet 345, and the air inlet 344 is connected to the air duct passage 341, and the guide fan 413 guides the indoor polluted air into the air duct flow path 414 through the connecting port 343, the air duct passage 341, and the air inlet 344 in sequence, and then is sent to the outside through the air outlet 345, the connecting pipe 321 and the fresh air duct 211 in sequence.

[0077] The second state is Figure 7 As shown, the second state corresponds to air intake through the fresh air duct 211, the second air inlet 323 is connected to the air inlet 344, and the air outlet 345 is connected to the air duct passage 341, and the guide fan 413 guides the outdoor fresh air into the air duct flow path 414 through the fresh air duct 211, the connecting pipe 321, and the air inlet in sequence, and then is delivered into the room through the air outlet 345, the air duct passage 341 and the connecting port 343 in sequence.

[0078] The fresh air module 400 only needs one fresh air duct 211 to realize single-tube air intake and exhaust, without the need for additional wall holes.

[0079] It is understandable that the guide fan 413 is a centrifugal fan, and the volute of the centrifugal fan is used as a part of the outer shell 412 to reduce material costs. In addition, the second end 411 and the shell 412 are integrally formed to reduce costs, and the switching bracket 310 is then installed with the second end 411 to simplify the installation process.

[0080] Preferably, the pipe interface 342 is installed with a pipe joint 212, and the fresh air pipe 211 is installed on the pipe joint 212. In addition, a wire mesh 213 is installed in the pipe joint 212 to prevent rats and insects from crawling in.

[0081] Reference Figures 8 to 14 The air conditioner according to the embodiment of the present invention comprises a housing 100, the above-mentioned fresh air module and a fresh air passage 102. The fresh air module is arranged in the housing 100, and the fresh air passage 102 is connected with the air duct passage 341. The air conditioner can realize the intermittent fresh air intake and sewage exhaust functions by using only one fresh air pipe 211, that is, indoor sewage air can be sent into the fresh air pipe 211 through the fresh air module 400 for discharge, and outdoor fresh air can be sent into the room through the fresh air pipe 211 through the fresh air module 400, thereby ensuring the comfort of indoor air without increasing the installation cost of the user, and bringing convenience to the user.

[0082] Reference Fig. 9 and Fig.10, a second fan 101 is disposed at the end of the fresh air passage 102, and the housing 100 is provided with at least one fresh air outlet 121 for the second fan 101 to discharge air. In some embodiments, a plurality of fresh air outlets 121 may be provided, such as Figure 8 and Fig. 9 As shown, a fresh air outlet 121 is provided on each side of the housing 100 , and a fresh air outlet 121 is provided on the front side of the housing 100 . After the airflow in the fresh air channel 102 is driven by the second fan 101 , the flow becomes smoother.

[0083] like Fig. 9 and Fig.10 As shown, the air conditioner further includes a purification module 103, which is arranged in the fresh air passage 102 to purify the airflow of the fresh air passage 102. In some other embodiments, a formaldehyde removal module 104 is further arranged to remove formaldehyde from the airflow purified by the purification module 103. The formaldehyde removal module 104 is used to remove harmful substances such as formaldehyde in the air to protect the health of the user. In order to facilitate replacement, the purification module 103 and the formaldehyde removal module 104 both adopt a drawer structure, which is convenient for users to disassemble and assemble.

[0084] In a vertical cabinet, Fig. 9 and Fig.10 As shown, the second fan 101 is located above the fresh air module 400. Specifically, the second fan 101 is located above the formaldehyde removal module 104. The formaldehyde removal module 104 is installed above the purification module 103. The purification module 103 is located above the fresh air module 400. In some embodiments, the purification module 103 may use a HEPA net and / or an IFD dust collection module.

[0085] The housing 100 is provided with at least one purified air inlet 111 connected to the fresh air passage, and the purified air inlet 111 is connected to the fresh air passage 102. The purified air inlet 111 is provided with a purified air inlet rotating plate 112 to control the opening and closing of the purified air inlet 111. In this embodiment, a purified air inlet 111 is provided on each side of the housing 100.

[0086] Reference Fig.11 In the exhaust air mode, the driving mechanism 300 drives the second air inlet 323 to communicate with the air outlet 345, combined with Figure 5 and Figure 8 The guide fan 413 is started, and the indoor polluted air is introduced into the fresh air duct 102 through the purified air inlet 111, and then guided into the air duct flow path 414 through the connecting port 343, the air duct passage 341, and the air inlet 344 in sequence, and then sent to the outside through the air outlet 345, the connecting pipe 321 and the fresh air pipe 211 in sequence.

[0087] Reference Fig.12In the fresh air intake mode, the driving mechanism 300 drives the second air inlet 323 to connect to the air inlet 344, and the guide fan 413 is started to guide the outdoor fresh air into the air duct flow path 414 through the fresh air pipe 211, the connecting pipe 321, and the air inlet in sequence, and then sent to the fresh air channel 102 through the air outlet 345, the air duct passage 341 and the connecting port 343 in sequence, and at the same time, the second fan 101 is turned on to send the outdoor fresh air to the fresh air outlet 121. Among them, the outdoor fresh air is filtered out of impurities in the fresh air channel 102 by the purification module 103, and the formaldehyde removal module 104 removes harmful substances such as formaldehyde, bringing healthier and more comfortable purified fresh air to users.

[0088] Reference Fig.13 In the purification mode, the guide fan 413 is turned off, and the second fan 101 is turned on to introduce the indoor air from the purified air inlet 111 into the fresh air channel 102 and then send it to the fresh air outlet 121. The indoor air is filtered out of impurities in the fresh air channel 102 by the purification module 103, and formaldehyde and other harmful substances are removed by the formaldehyde removal module 104, bringing healthier and more comfortable purified fresh air to users.

[0089] Reference Fig.14 , in the fresh air intake and purification mode, the driving mechanism 300 drives the second air receiving port 323 to connect to the air inlet 344, and the guide fan 413 is started, and the outdoor fresh air is guided into the air duct flow path 414 through the fresh air pipe 211, the connecting pipe 321, and the air inlet in sequence, and then sent to the fresh air channel 102 through the air outlet 345, the air duct passage 341 and the connecting port 343 in sequence, and the second fan 101 is turned on at the same time to send the outdoor fresh air to the fresh air outlet 121. At the same time, the purification air inlet 111 is opened to allow the indoor air to enter the fresh air channel 102, and together with the outdoor fresh air, impurities are filtered out by the purification module 103, and harmful substances such as formaldehyde are removed by the formaldehyde removal module 104, and then sent into the room through the fresh air outlet 121.

[0090] in, Figures 11 to 14 In the figure, the solid arrows represent the direction of outdoor fresh air flow, and the dotted lines represent the direction of indoor air flow.

[0091] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A duct structure, characterized in that: include A first end portion, wherein the first end portion is provided with a pipe interface; a second end portion, the second end portion being provided with an air inlet and an air outlet; a connecting pipe, the connecting pipe being located between the first end and the second end, the connecting pipe having a first air receiving port and a second air receiving port that are connected to each other, the first air receiving port being connected to the pipe interface; and A driving mechanism is connected to the connecting pipe and is used to drive the second air receiving port to move so that the second air receiving port is connected to the air inlet or the air outlet.

2. The air duct structure according to claim 1, characterized in that: The driving mechanism drives the connecting pipe to rotate so as to move the second air receiving port.

3. The air duct structure according to claim 2, characterized in that: The connecting pipe includes a pipe section, a first pipe end arranged at one end of the pipe section, and a second pipe end arranged at the other end of the pipe section, the first air receiving port is arranged at the first pipe end, the second air receiving port is arranged at the second pipe end, the driving mechanism drives the first pipe end to rotate so as to move the second air receiving port, and at least a portion of the central axis of the pipe section has an angle with the rotation axis of the first pipe end.

4. The air duct structure according to claim 3, characterized in that: The first end includes a first plate, the pipe interface is arranged on the first plate, the second end includes a second plate arranged parallel to the first plate, the air inlet and the air outlet are arranged on the second plate, and the end face of the first pipe end and the end face of the second pipe end are arranged parallel to each other.

5. The air duct structure according to claim 3, characterized in that: The driving mechanism includes a driven gear arranged at the first pipe end and a driving source driving the driven gear to rotate. The driven gear drives the first pipe end to rotate, so that the connecting pipe rotates.

6. The air duct structure according to claim 3, 4 or 5, characterized in that: The first pipe end is circular and has a first flange extending radially outward. The first end portion is provided with a first annular groove for the first flange to be embedded in.

7. The air duct structure according to claim 6, characterized in that: The second pipe end is equipped with a rotating shaft, the axis of the rotating shaft is colinear with the rotating axis of the first pipe end, and the driving mechanism drives the first pipe end to rotate, so that the second pipe end can rotate around the rotating shaft.

8. The air duct structure according to claim 7, characterized in that: The second end portion is provided with a second annular groove, the second annular groove is coaxial with the rotating shaft, the air inlet and the air outlet are both located in the second annular groove, and the second pipe end is provided with a slide plate embedded in the second annular groove.

9. A fresh air module, characterized in that: include The air duct structure according to any one of claims 1 to 8, wherein an air duct passage is provided between the first end and the second end to connect to the interior of the room, and the air duct passage is connected to either the air inlet or the air outlet; A fresh air duct, the fresh air duct being installed at the duct interface; a housing, the housing being connected to the second end, an air duct being provided between the housing and the second end, one end of the air duct being connected to the air inlet, and the other end of the air duct being connected to the air outlet; and A guide fan is arranged in the shell to make the airflow of the air duct flow from the air inlet to the air outlet.

10. The fresh air module according to claim 9, characterized in that: The second air receiving port is moved by the driving mechanism to switch between a first state and a second state, wherein the first state is that the second air receiving port is connected to the air outlet, and the air inlet is connected to the air duct; the second state is that the second air receiving port is connected to the air inlet, and the air outlet is connected to the air duct.

11. An air conditioner, characterized in that: include shell; The fresh air module according to claim 9 or 10, wherein the fresh air module is disposed in the housing; and A fresh air channel is connected to the air duct.

12. The air conditioner according to claim 11, characterized in that: A second fan is disposed at the end of the fresh air channel, and the housing is provided with at least one fresh air outlet for the second fan to discharge air.

13. The air conditioner according to claim 12, characterized in that: It also includes a purification module, which is arranged in the fresh air channel to purify the airflow in the fresh air channel.

14. The air conditioner according to claim 12 or 13, characterized in that: The shell is provided with at least one purified air inlet connected to the fresh air channel, and the purified air inlet is connected to the fresh air channel.

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