CN115200197A - Air duct assembly for air exchange and air conditioner having the same - Google Patents

Abstract

The present invention provides an air duct assembly for air exchange and an air conditioner having the air duct assembly, wherein the air duct assembly includes: an inner pipe, the inside of which forms a first channel for circulating air; an outer pipe, which The utility model is sleeved on the outside of the inner pipeline, and a second channel for circulating airflow is formed between the inner wall of the outer pipeline and the outer wall of the inner pipeline; It is rotatably arranged in air flow communication with the second passage and isolated from the first passage, and is used to cause the formation of an air flow through the second passage by rotation. By improving the structure of the air duct assembly for air exchange, the present invention achieves the purpose of separately configuring the air flow actuating device for the external pipeline, thereby simplifying the control logic of the ventilation process and improving the flexibility.

Description

Air duct assembly for air exchange and air conditioner having the same

technical field

The present invention relates to air conditioning technology, in particular to an air duct assembly for air exchange and an air conditioner having the same.

Background technique

For indoor spaces, prolonged airtightness may result in degraded air quality. Air exchange is an effective means to improve the air quality of space. As the name implies, there is a two-way airflow in the airflow exchange process, which can not only introduce fresh airflow into the indoor space, but also lead out the dirty airflow in the indoor space. Therefore, two airflow channels need to be set up to transport airflow to different directions to achieve airflow exchange.

However, the inventor realized that when two air flow passages are formed by nesting two pipelines with each other, since the inner pipeline is sheathed inside the outer pipeline, it is limited by the shielding of the inner pipeline, so there will be no problem. The airflow actuation device is separately provided for the external pipeline, but a common fan may be set at one end of the two pipelines to guide the airflow direction of the two airflow channels, which leads to the complicated control logic of the ventilation process and poor flexibility. .

The above information disclosed in this Background is only for enhancement of understanding of the background of the application and therefore it may contain that it does not form the prior art that is already known to a person of ordinary skill in the art.

SUMMARY OF THE INVENTION

An object of the present invention is to overcome at least one technical defect in the prior art, and to provide an air duct assembly for air exchange and an air conditioner having the same.

A further object of the present invention is to improve the structure of the air duct assembly used for air exchange, so that its external pipeline is separately equipped with an air flow actuating device, thereby simplifying the control logic of the air exchange process and improving flexibility.

Another further object of the present invention is to improve the airflow activating effect of the external airflow activating device on the airflow channel between the external pipeline and the internal pipeline of the air duct assembly, and improve the ventilation efficiency.

A further object of the present invention is to use the embedded impeller to arrange the air flow actuating mechanism in the narrow second passage, omitting the air flow thrust transmission mechanism.

In particular, according to an aspect of the present invention, there is provided an air duct assembly for air exchange, comprising:

an internal pipeline, the interior of which forms a first channel for circulating airflow;

an outer pipeline, which is sleeved on the outside of the inner pipeline, and a second channel for circulating airflow is formed between the inner wall of the outer pipeline and the outer wall of the inner pipeline; and

An external airflow activating device, which has a rotating part, the rotating part is controlled and rotatably arranged, which is in airflow communication with the second channel and is isolated from the first channel, and is used for rotating to promote the formation of flow through the the airflow in the second channel.

Optionally, the rotating part includes an impeller, and the impeller is rotatably wound around the outside of the inner pipeline, so that the impeller generates an airflow thrust along the direction of its rotation axis when it rotates, so as to promote the formation of flow. Airflow through the second channel.

Optionally, the impeller has a plurality of vanes, and the plurality of vanes are arranged in the second passage and distributed at intervals along the circumferential direction of the inner pipeline.

Optionally, the impeller further includes a hollow shaft, which is rotatably sleeved on the outside of the inner pipeline; the hollow shaft has a first section at least partially extending into the second passage; and

A plurality of the blades are arranged on the first section to rotate synchronously with the first section.

Optionally, the hollow rotating shaft further has a second section located at least partially outside the second channel and connected to the first section, the second section and the first section being an integral piece or fixedly connected to said first segment; and

The external air flow actuating device further includes a power part, and the second section is connected with the power part to transmit the driving force from the power part to the first section and the plurality of blades .

Optionally, an outer surface of the second section is provided with a ring gear, and a plurality of gear teeth are formed in the circumferential direction of the ring gear to be connected with the power part through meshing action.

Optionally, the power part includes:

a motor having an output shaft; and

A transmission gear meshes with the ring gear, and the rotating shaft of the transmission gear is fixedly connected with the output shaft of the motor.

Optionally, the internal pipeline is a fresh air pipeline, which is used for conveying fresh air flow; and

The external pipeline is a dirty wind pipeline, which is used for conveying the dirty wind flow.

Optionally, the air duct assembly further includes:

An internal airflow actuation device, comprising:

a volute, which is provided with a fresh air inlet for communicating with the internal pipeline and a fresh air outlet for communicating with the working environment where the air duct assembly is located; and

The fan is arranged in the volute, and is controlled and rotatably arranged, and is used to promote the formation of an air flow that flows through the first passage and flows to the fresh air outlet through rotation.

According to another aspect of the present invention, there is also provided an air conditioner, comprising: the air duct assembly for air exchange according to any one of the above.

The air duct assembly for airflow exchange and the air conditioner having the same of the present invention, by improving the structure of the air duct assembly for airflow exchange, an external airflow activating device is provided in the air duct assembly, and the external airflow activating device is The rotating part is only in air flow communication with the second channel, and is isolated from the first channel, so as to realize the purpose of separately configuring the air flow actuating device for the external pipeline, thereby simplifying the control logic of the ventilation process and improving the flexibility.

Further, in the air duct assembly for air exchange of the present invention and the air conditioner having the same, the impeller is configured to rotate around the inner pipe by wrapping the impeller on the outside of the inner pipe, so as to generate an air flow along the axis of the impeller. The airflow thrust, since the airflow thrust in this direction is parallel to the extending direction of the second channel, therefore, based on the above structure, the airflow of the external airflow actuating device for the airflow channel between the external pipeline and the internal pipeline of the air duct assembly can be improved. Actuating effect, thereby improving ventilation efficiency.

Further, in the air duct assembly for air exchange and the air conditioner having the same of the present invention, when the plurality of blades of the impeller are arranged in the second passage, the impeller can be at least partially embedded in the second passage, and the Air flow is guided in the second channel. By arranging the embedded impeller, the airflow actuating mechanism can be arranged in the narrow second channel. Since the airflow actuating mechanism is directly arranged in the second channel, the embedded impeller can directly generate airflow thrust in the second channel, so The transmission mechanism of airflow thrust can be omitted, and it has the advantages of compact structure and good drainage effect.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

1 is a schematic structural diagram of an air duct assembly for air exchange according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the air duct assembly for air exchange shown in FIG. 1 from another perspective;

Figure 3 is a schematic perspective view of the air duct assembly for air exchange shown in Figure 1;

FIG. 4 is a schematic structural diagram of the rotating part of the external airflow actuating device of the air duct assembly for airflow exchange shown in FIG. 1;

FIG. 5 is a schematic structural diagram of the inner air flow actuating device of the air duct assembly shown in FIG. 1 for air exchange;

6 is a schematic structural diagram of an air path blocking device of an air duct assembly for air exchange according to an embodiment of the present invention;

7 is a schematic perspective view of the air path blocking device of the air duct assembly shown in FIG. 6 for air exchange;

FIG. 8 is a schematic structural diagram of an air hood of an air duct assembly for air exchange according to an embodiment of the present invention;

9 is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention.

Detailed ways

Reference will now be made in detail to the embodiments of the present invention, one or more examples of which are illustrated in the accompanying drawings. The various examples are provided to illustrate the invention, not to limit it. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the inventions. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield yet another embodiment. Accordingly, the present invention is intended to cover such modifications and changes as come within the scope of the appended claims and their equivalents.

The air duct assembly 10 for air exchange and the air conditioner having the same according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 9 . The orientation or positional relationship indicated by "inner", "outer", "circumferential", "axial", "radial", "lateral", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and to simplify the description rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for description purposes, and cannot be interpreted as indicating or implying relative importance or implying the number of indicated technical features . Thus, features defined as "first" and "second" may expressly or implicitly include at least one of such features, ie, one or more of such features. In the description of the present invention, "plurality" means at least two, such as two, three, etc. unless otherwise specifically defined. When a feature "comprises or includes" one or some of the features it covers, unless specifically described otherwise, this indicates that other features are not excluded and that other features may be further included.

In the description of this embodiment, reference to the description of the terms "one embodiment", "some embodiments", "example", etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in the present invention at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiment of the present invention provides an air duct assembly 10 for air exchange. FIG. 1 is a schematic structural diagram of an air duct assembly 10 for air exchange according to an embodiment of the present invention. FIG. 2 is a schematic structural diagram of the air duct assembly 10 for air exchange shown in FIG. 1 from another perspective. FIG. 3 is a schematic perspective view of the air duct assembly 10 for airflow exchange shown in FIG. 1 . The air duct assembly 10 for airflow exchange may generally include an inner conduit 200 , an outer conduit 300 and an outer airflow actuation device 400 .

Wherein, the interior of the inner pipeline 200 forms a first channel 210 for circulating airflow. The outer pipeline 300 is sleeved on the outside of the inner pipeline 200 to form a casing structure. And a second channel 310 for circulating airflow is formed between the inner wall of the outer pipe 300 and the outer wall of the inner pipe 200 . The first channel 210 and the second channel 310 are used to circulate different airflows, such as airflows with opposite flow directions. The first channel 210 and the second channel 310 may be configured to selectively circulate the fresh air flow or the dirty air flow. In some embodiments, the first channel 210 may be a fresh air channel for circulating the fresh air flow, and the second channel 310 may be a dirty wind channel for circulating the dirty wind flow. In other embodiments, the first channel 210 may be a dirty air channel for circulating the dirty air flow, and the second channel 310 may be a fresh air channel for circulating the fresh air flow.

The external airflow activating device 400 has a rotating part 410 . The rotating part 410 is controllably and rotatably disposed, which is in airflow communication with the second channel 310 and is isolated from the first channel 210 , and is used to promote the formation of an airflow flowing through the second channel 310 through rotation. The fact that the rotating part 410 is in airflow communication with the second passage 310 and is isolated from the first passage 210 means that the airflow passing through the rotating part 410 can flow through the second passage 310 and will not flow through the first passage 210 . When the rotating part 410 rotates, the air flow actuated can only flow through the second channel 310 , and will not flow through the first channel 210 . The external airflow activating device 400 is a separate airflow activating device specially provided for the external pipeline 300 .

In the air duct assembly 10 for airflow exchange in this embodiment, by improving the structure of the air duct assembly 10 for airflow exchange, an external airflow activating device 400 is provided in the air duct assembly 10, and the external airflow activating device 400 is set. The rotating part 410 is only in air flow communication with the second channel 310, and is isolated from the first channel 210, so as to realize the purpose of separately configuring the air flow actuating device for the external pipeline 300, thereby simplifying the control logic of the ventilation process and improving the flexibility . By adopting the solution of this embodiment, it is possible to deliver outdoor fresh air indoors, and to discharge indoor turbid air to the outdoors, so as to realize all the replacement of indoor air, and improve the user's healthy fresh air experience.

Since the first passage 210 is formed inside the inner pipe 200, it can be connected to the air outlet of the volute 510 of the fan 520. The airflows of the two channels 310 can flow independently under the action of the external airflow activating device 400 , so the two airflows flowing through the first channel 210 and the second channel 310 can flow independently and simultaneously without interfering with each other.

Compared with the solution of arranging a common fan at one end of the two pipelines to guide the airflow of the two airflow channels, the airflow duct assembly 10 of this embodiment can flexibly control the flow of the two airflows flowing through the two airflow channels. The flow rate and flow rate enable the indoor space to discharge turbid air while inputting fresh air, and can independently select any airflow to input or output the indoor space, so that the indoor space can only input fresh air or only discharge turbid air according to actual needs, with ventilation efficiency High, flexible and other advantages, breaking through the inherent shackles of the existing technology.

In this embodiment, the inner pipeline 200 and the outer pipeline 300 may be straight pipes respectively. Of course, in other embodiments, the inner pipeline 200 or the outer pipeline 300 may also be an elbow. The following will take the case where the inner pipeline 200 and the outer pipeline 300 are respectively straight pipes as an example, the structure of the air duct assembly 10 will be further introduced, and those skilled in the art should be easy to expand on the basis of understanding the various embodiments of the present disclosure and transformations, so the present disclosure will not exemplify them one by one. The length of the inner pipe 200 may be greater than the length of the outer pipe 300 , for example, both ends of the inner pipe 200 may respectively pass through the end opening of the outer pipe 300 and be exposed.

There can be various ways to make the rotating part 410 communicate with the second channel 310 and be isolated from the first channel 210. For example, the rotating part 410 can be at least partially arranged in the second channel 310; The position is indirectly communicated with the end opening of the second channel 310, for example, through an additional connecting pipe or other air passage connecting structure, but not limited thereto.

In some optional embodiments, the rotating part 410 includes an impeller 411 , and the impeller 411 is rotatably wound around the outside of the inner pipeline 200 , so that the impeller 411 generates airflow thrust along the direction of its rotation axis when it rotates, so as to promote Air flow through the second channel 310 is formed.

FIG. 4 is a schematic structural diagram of the rotating part 410 of the external airflow activating device 400 of the air duct assembly 10 for airflow exchange shown in FIG. 1 . Since the impeller 411 is rotatably disposed outside the inner pipe 200 , the rotation axis of the impeller 411 is coaxial with the central axis of the inner pipe 200 . In some embodiments, the central axis of the inner pipe 200 is coaxial with the central axis of the outer pipe 300, so the direction of the rotation axis of the impeller 411 is parallel to the extension direction of the inner pipe 200 and the outer pipe 300, and parallel to the The extension direction of the first channel 210 and the second channel 310 .

By surrounding the impeller 411 on the outside of the inner pipe 200 and configuring the impeller 411 to rotate around the inner pipe 200, an airflow thrust in the direction of the rotation axis of the impeller 411 is generated, since the airflow thrust in this direction is parallel to the second passage 310 Therefore, based on the above structure, the airflow activating effect of the external airflow activating device 400 on the airflow channel between the external pipeline 300 and the internal pipeline 200 of the air duct assembly 10 can be improved, thereby improving the ventilation efficiency.

The impeller 411 can be a substantially annular fan, for example, can be sleeved on the inner pipeline 200 , so that the blades 411 a are distributed in the second channel 310 .

In some further embodiments, the impeller 411 has a plurality of vanes 411 a , and the plurality of vanes 411 a are disposed in the second passage 310 and distributed at intervals along the circumferential direction of the inner pipeline 200 . For example, the plurality of vanes 411a may be evenly spaced apart along the circumferential direction of the inner conduit 200 . When the plurality of blades 411a are rotated, an airflow that flows in the direction of the rotation axis of the impeller 411 can be promoted, and the airflow can flow from the indoor space to the outdoor space.

When the plurality of blades 411 a of the impeller 411 are disposed in the second passage 310 , the impeller 411 may be at least partially embedded in the second passage 310 and guide the airflow in the second passage 310 . By arranging the embedded impeller 411 , the airflow actuating mechanism can be arranged in the narrow second passage 310 . Since the airflow actuating mechanism is directly arranged in the second passage 310 , the embedded impeller 411 can be directly arranged in the second passage 310 The airflow thrust is generated, so the conduction mechanism of airflow thrust can be omitted, and it has the advantages of compact structure and good drainage effect.

In some embodiments, a plurality of blades 411a may be disposed on an annular hub, and the annular hub is sleeved on the inner pipe 200 to form the impeller 411 . The impeller 411 (eg, its annular hub) can be drive-connected with an external power mechanism, so as to rotate under the drive of the power mechanism.

In other embodiments, the impeller 411 further includes a hollow shaft 411b , which is rotatably sleeved on the outside of the inner pipeline 200 . A bearing may be installed between the hollow rotating shaft 411b and the outer wall of the inner pipeline 200 , so that the hollow rotating shaft 411b can freely rotate on the outer wall of the inner pipeline 200 . The hollow shaft 411b has a first section that at least partially protrudes into the second channel 310 . And a plurality of blades 411a are disposed on the first section to rotate synchronously with the first section. That is, by driving the first section of the hollow shaft 411b to rotate, the blades 411a disposed on the first section can be indirectly driven to rotate, thereby generating airflow thrust along the rotation axis of the impeller 411 .

With the above structure, the airflow actuating mechanism (eg, the vane 411a provided on the first section) can be arranged in the second passage 310 having an annular cross-section with limited space, so that the airflow actuation is directly arranged in the second passage 310 The mechanism is realized to save space, improve the structural integrity of the air duct assembly 10 and ensure the airflow actuation effect.

In some further embodiments, the hollow rotating shaft 411b further has a second section located at least partially outside the second channel 310 and connected to the first section, the second section and the first section are integral or integral with the first section Segment fixed connection. In some embodiments, the section extending into the second channel 310 may be referred to as the first section, and the section exposed outside the second channel 310 may be referred to as the second section.

With the above structure, the first section extends into the second channel 310 to facilitate arranging the vanes 411a in the second channel 310, and the second section extends out of the second channel 310 to facilitate the use of the second section to connect the power mechanism.

In some further embodiments, the external airflow actuating device 400 further includes a power part 420, the second section is connected with the power part 420, so as to transmit the driving force from the power part 420 to the first section and the plurality of blades 411a. For example, the power part 420 may be drive-connected with the end of the second section away from the first section, so that the second section rotates around its central axis under the driving force of the power section 420, thereby driving the first section and the other The blades 411a rotate synchronously.

In some further embodiments, the outer surface of the second section is provided with a ring gear 412 , and a plurality of gear teeth 412 a are formed in the circumferential direction of the ring gear 412 to be connected with the power part 420 through meshing action. The ring gear 412 may be one piece with the second section, or may surround and be fixed to the second section. The ring gear 412 may have a hollow annular shape, and the plurality of gear teeth 412a are formed on the outer peripheral surface thereof.

By arranging the ring gear 412 on the outer surface of the second section, the ring gear 412 can be used to provide the second section with a driving force to rotate around its central axis, so that the second section can smoothly drive the first section and the plurality of The blade 411a rotates as expected.

In some optional embodiments, the power part 420 includes a motor 421 and a transmission gear 422 . Among them, the motor 421 has an output shaft. The transmission gear 422 meshes with the ring gear 412 , and the rotating shaft of the transmission gear 422 is fixedly connected with the output shaft of the motor 421 . For example, the rotating shaft of the transmission gear 422 and the output shaft of the motor 421 may be arranged coaxially.

In other embodiments, the power part 420 can omit the transmission gear 422. For example, at this time, the output shaft of the motor 421 can be directly formed with a ring gear meshing with the ring gear 412 of the second section, so as to simplify the power The structure of the part 420 reduces the manufacturing cost.

In some optional embodiments, the inner pipeline 200 is a fresh air pipeline, which is used for conveying fresh air flow. And the external pipeline 300 is a dirty wind pipeline, which is used for conveying the dirty wind flow. With this arrangement, since the diameter of the dirty wind pipeline is relatively large, the communication area between the second passage 310 and the indoor space can be increased to a certain extent, thereby improving the discharge efficiency of the dirty wind airflow.

The inner pipeline 200 and the outer pipeline 300 are arranged in the air duct assembly 10 , and the inner pipeline 200 is used to circulate the fresh air flow, and the outer pipeline 300 is used to circulate the dirty air flow, which is beneficial to reduce the size of the air duct assembly 10 volume, reduce space occupancy, and improve aesthetics.

In some optional embodiments, the air duct assembly 10 may further include an internal airflow actuating device 500 including a volute 510 and a fan 520 . FIG. 5 is a schematic structural diagram of the internal airflow actuating device 500 of the air duct assembly 10 for airflow exchange shown in FIG. 1 . The volute 510 is provided with a fresh air inlet 511 communicating with the internal pipeline 200 and a fresh air outlet 512 for communicating with the working environment where the air duct assembly 10 is located. The fan 520 is arranged in the volute 510, and is controlled and rotatably arranged, and is used to promote the formation of an air flow that flows through the first passage 210 and flows to the fresh air outlet 512 through rotation. The passage 210 flows to the fresh air outlet 512 and is discharged to the working environment through the fresh air outlet 512 . The working environment where the air duct assembly 10 is located may refer to the indoor space served by the air duct assembly 10 . The air duct assembly 10 of this embodiment provides fresh air flow to its working environment, and discharges dirty air flow in its working environment.

The internal airflow activating device 500 may be a centrifugal fan device, which is also provided with a motor. In some embodiments, the fresh air outlet 512 of the volute 510 may be connected to the air duct of the indoor unit casing 21 of the air conditioner in the working environment where the air duct assembly 10 is located, so that the fresh air flowing through the first passage 210 and the fresh air outlet 512 sequentially It further flows into the air duct of the indoor unit casing 21 and is discharged through the air outlet of the indoor unit casing 21 . For example, the fresh air outlet 512 of the volute 510 can be connected to the upstream section of the air duct of the indoor unit casing 21, so that the fresh air can exchange heat with the heat exchanger during the process of passing through the air duct, and during the heat exchange Then discharge to the working environment. Of course, the fresh air outlet 512 of the volute 510 can also be connected to the downstream section of the air duct of the indoor unit casing 21, so that the fresh air can be directly discharged to the working environment during the process of flowing through the air duct, and will not be replaced with Heater heat exchange.

In some optional embodiments, the air duct assembly 10 may further include an air path blocking device 600 . FIG. 6 is a schematic structural diagram of an air path blocking device 600 of the air duct assembly 10 for air exchange according to an embodiment of the present invention. The following will take the case where the inner pipeline 200 is the fresh air pipeline, the outer pipeline 300 is the dirty air pipeline, the first channel 210 is the fresh air channel, and the second channel 310 is the dirty air channel as an example, for the air circuit blocking device 600 and other components of the duct assembly 10 are further described.

The air path blocking device 600 includes a baffle portion 610, and the baffle portion 610 is disposed between the air outlet end of the second passage 310 and the air inlet end of the first passage 210, and is used to block the second passage 310 from the air inlet end of the first passage 210. The air flow passage between the first passages 210 prevents the turbid air flowing through the second passage 310 from flowing into the first passage 210 . The air inlet end of the first channel 210 forms the air inlet of the first channel 210 . The air outlet end of the second passage 310 forms the air outlet of the second passage 310 .

Since the inner pipeline 200 and the outer pipeline 300 are sheathed with each other to form a casing structure, the baffle portion 610 of the air circuit blocking device 600 can be disposed at the air outlet end of the second passage 310 (for example, at the second passage downstream of the air outlet end of the second passage 310 and adjacent to the air outlet end of the second passage 310), or arranged at the air inlet end of the first passage 210 (for example, arranged upstream of the air inlet end of the first passage 210, and adjacent to the inlet end of the fresh air end).

The shape and structure of the baffle portion 610 are not specifically limited in this embodiment, as long as it can block the turbid air flow or the fresh air flow from continuing to flow forward according to its original flow direction. For example, the baffle portion 610 may be an annular baffle, or may be a circular baffle or an arc-shaped baffle, but is not limited thereto.

By arranging the air passage blocking device 600 and disposing the baffle portion 610 in the air passage blocking device 600 , the baffle portion 610 is disposed at the air outlet end of the second passage 310 and the air inlet end of the first passage 210 . can play the role of blocking the airflow channel between the second channel 310 and the first channel 210, so based on the solution of this embodiment, it is beneficial to reduce or avoid the mixed flow of the fresh air airflow and the dirty air airflow, so that the air duct The component 10 performs the function of replacing the fresh air normally.

In some further embodiments, the air circuit blocking device 600 further includes a reversing portion 620 . The reversing portion 620 is connected to the baffle portion 610 and defines a reversing passage 630 that communicates with the second passage 310 . And the extension direction of the reversing passage 630 deviates from the air outlet direction of the second passage 310 , so that the turbid air flow out of the second passage 310 flows along the reversing passage 630 to change the flow path. Wherein, the air outlet direction of the second passage 310 is parallel to the extending direction of the external pipeline 300 . If the reversing portion 620 is not provided, the turbid air flow flowing out of the second passage 310 will continue to flow along the air outlet direction of the second passage 310 . The extension direction of the reversing passage 630 deviates from the air outlet direction of the second passage 310 means that a non-zero included angle is formed between the extending direction of the reversing passage 630 and the air outlet direction of the second passage 310, so that the outflow direction of the second passage 310 is not zero. The turbid air flow in the channel 310 changes the flow direction when passing through the reversing channel 630, and then changes the flow path.

When the reversing portion 620 is further provided in the air circuit blocking device 600, since the reversing portion 620 is connected with the baffle portion 610 and defines a reversing passage 630 that communicates with the second passage 310, and the reversing passage 630 is The extending direction deviates from the air outlet direction of the second passage 310 , so the air duct assembly 10 can guide the turbid air flow to flow in a direction deviating from the air inlet end of the first passage 210 , thereby reducing or preventing the turbid air flow from flowing out of the second passage 310 is then sucked in by the first channel 210 .

The reversing channel 630 may be defined by the inner wall of the reversing portion 620 . For example, the baffle part 610 and the reversing part 620 may be arranged such that the turbid air flowing out of the second passage 310 hits the baffle part 610 head-on, and then flows against the inner wall of the reversing part 620 and is guided in the reversing passage 630 Down-transform the flow path.

The included angle between the extending direction of the reversing channel 630 and the air outlet direction of the second channel 310 may be greater than 0° and less than or equal to 180°. In some embodiments, the included angle between the extension direction of the reversing channel 630 and the air outlet direction of the second channel 310 is 90-180°, preferably, it may be approximately 180°. In this way, the turbid air flowing out of the second channel 310 can continue to flow in a direction opposite to the original flow direction, so as to gradually move away from the air inlet end of the first channel 210 during the flow.

In some optional embodiments, the baffle part 610 is sleeved on the inner pipeline 200 , for example, the baffle part 610 can be an annular baffle, so as to be sleeved on the inner pipeline 200 . The baffle portion 610 faces the air outlet end of the second passage 310 , in other words, the turbid air flow flowing out of the second passage 310 can hit the baffle portion 610 head-on. The surface area of the surface of the baffle portion 610 facing the air outlet end of the second passage 310 may be larger than the opening area of the air outlet end of the second passage 310 . There is a gap 640 between the baffle portion 610 and the air outlet end of the second passage 310 . That is to say, the baffle portion 610 is not in close contact with the air outlet end of the second passage 310 and will not block the second passage 310 .

The reversing portion 620 and the baffle portion 610 together enclose a accommodating cavity 650 having a lateral opening through which the outer pipe 300 is inserted to define a reversing channel 630 radially outside the outer pipe 300 . That is, the reversing portion 620 and the baffle portion 610 together enclose an accommodating cavity 650 with a lateral opening, and the external pipeline 300 can be inserted into the accommodating cavity 650 through the lateral opening, in other words, into the laterally opening external pipeline Part of the section 300 is surrounded by the accommodating cavity 650 , and at this time, a reversing channel 630 is formed between the inner wall of the accommodating cavity 650 and the radially outer side of the outer pipe 300 inserted into the accommodating cavity 650 .

Since the baffle portion 610 can be sleeved on the inner pipeline 200, and the reversing portion 620 and the baffle portion 610 can jointly enclose a receiving cavity 650 into which the outer pipeline 300 is inserted, the baffle portion 610 and the reversing The part 620 can completely avoid the air inlet end of the first channel 210 , and the fresh air assembly can adjust the air outlet path of the dirty air flow with a sophisticated structure without blocking the first channel 210 .

In some further embodiments, the baffle portion 610 is a baffle, such as an annular baffle. And the baffle part 610 is provided with an assembly hole 611 for the internal pipeline 200 to pass through it to achieve interference fit, so that the baffle part 610 can be fixed on the internal pipeline 200, and the assembly hole 611 can be avoided. In case of air leakage, the turbid air flow flowing out of the second passage 310 can be completely received by the baffle part 610 and change the flow direction on the surface of the baffle part 610 .

The baffle portion 610 may be an annular flat plate. Of course, in other embodiments, the baffle portion 610 may also be a ring-shaped curved plate, as long as it can block the turbid wind flow from continuing to flow forward along its original flow direction.

In some further embodiments, a raised area 614 raised toward the air outlet end of the second passage 310 is formed in the center of the main body panel surface of the baffle portion 610 . In other words, the central section of the main body panel surface of the baffle part 610 is raised toward the air outlet end of the second passage 310 , and a raised area 614 is formed.

FIG. 7 is a schematic perspective view of the air path blocking device 600 of the air duct assembly 10 for air exchange shown in FIG. 6 . The bulging region 614 is arranged to have an increasing degree of bulge along the centripetal direction, thereby forming an arc-shaped bulging surface with a tapered section. The section of the arc-shaped raised surface can be circular or elliptical. Wherein, the “section taper” is relative to the bulging direction of the bulging region 614 , and the bulging direction of the bulging region 614 points to the air outlet end of the second channel 310 . The “centripetal direction” may refer to the direction toward the central axis of the central region of the main body panel surface of the baffle portion 610 .

The mounting hole 611 is the smallest cross-sectional circle on the arc-shaped raised surface. That is, the fitting hole 611 is formed on the end face of the raised region 614 opposite to the second channel 310 . The ends of raised regions 614 define mounting holes 611 .

The periphery of the main body plate surface of the baffle portion 610 is formed with an arc-shaped connecting curved surface 615 that gradually expands toward the opening of the external pipeline 300 . Seamlessly connect with the curved raised surface. The arc-shaped connecting curved surface 615 surrounds the outer circumference of the maximum cross-sectional circle of the arc-shaped raised surface. The gradual expansion of the arc-shaped connecting curved surface 615 toward the opening of the external pipeline 300 means that along the direction close to the opening of the end of the external pipeline 300 , the cross-sectional circle of the arc-shaped connecting curved surface 615 gradually becomes larger, and the end of the arc-shaped connecting surface 615 forms its maximum cross-section. A circle; the arc-shaped connecting curved surface 615 is set so that the bulging distance toward the external pipeline 300 in the centrifugal direction increases gradually, thereby forming an arc-shaped connecting curved surface 615 with a gradually expanding cross-section.

The reversing portion 620 is a hollow cylindrical member surrounding the peripheral section of the air outlet end of the outer pipe 300 , one end of which is connected to the maximum cross-sectional circle of the arc-shaped connecting curved surface 615 , and the other end forms a lateral opening. The peripheral section of the air outlet end of the outer pipe 300 refers to a partial section of the outer pipe 300 that is close to the air outlet end, such as the distal section of the outer pipe 300 . A partial section of the outer pipe 300 close to the air outlet end is inserted into the above-mentioned accommodating cavity 650 through the lateral opening.

With the above structure, when the center of the main body plate surface of the baffle portion 610 is formed with an arc-shaped convex curved surface that is raised toward the air outlet end of the second passage 310, and the periphery of the main body plate surface of the baffle portion 610 is formed with a pipeline facing the outside When the opening of the opening 300 is gradually expanding to connect the curved surface 615, the turbid air flow out of the second channel 310 can flow along the smooth curved surface and gradually adjust the flow direction, so the air duct assembly 10 can adjust the air outlet path of the turbid wind airflow when , to reduce wind noise.

In some optional embodiments, the air duct assembly 10 may further include a dirty air filter screen 700, which is annular, and is sleeved on the peripheral section of the air outlet end of the outer pipe 300, and is closed Side opening for filtering foreign objects. The turbid air filter 700 can be formed by splicing two half-ring filters. For example, it can be installed in a split manner and fixedly connected by a buckle, which can realize quick and easy installation.

Since the outer pipe 300 is used to transport the dirty air flow in the indoor space to the outdoor space, the air outlet end of the outer pipe 300 is arranged in the outdoor space. Using the dirty air filter 700 to close the side openings can reduce or prevent foreign objects such as dust and debris in the outdoor space from entering the second passage 310 .

In some optional embodiments, the air duct assembly 10 may further include an air cover 800 , which includes a base 810 , a cover body 820 and a fresh air filter 830 . FIG. 8 is a schematic structural diagram of an air hood 800 of the air duct assembly 10 for air exchange according to an embodiment of the present invention.

The base 810 is a hollow cylindrical member sleeved on the peripheral section of the air inlet end of the internal pipeline 200 . The peripheral section of the air inlet end of the inner pipe 200 refers to a partial section of the inner pipe 200 close to the air inlet end. The cover body 820 expands outward from the outer wall of the cylinder of the base 810 along the axial direction to form a bell mouth with a gradually expanding opening. Wherein, expanding outward along the axis direction means that the opening of the bell mouth faces away from the first channel 210 , and the central axis of the bell mouth is coaxial with the central axis of the first channel 210 .

Since the cover body 820 defines a bell mouth, and the opening of the bell mouth gradually expands outward, the cover body 820 can also play a blocking role, thereby preventing the turbid air flow from being inhaled by the first channel 210 . When the air cover 800 needs to be installed, the base 810 can be directly sleeved on the peripheral section of the air inlet end of the internal pipeline 200, and the installation process is very simple.

The fresh air filter 830 closes the air inlet end of the inner pipe 200 to filter foreign matter in the fresh air flow, and is connected to an axial end of the base 810 adjacent to the air inlet end of the inner pipe 200 . The fresh air filter 830 closes the axial end of the hollow cylindrical base 810 and closes the air inlet end of the internal pipeline 200, which can reduce or prevent foreign objects such as dust and debris in the outdoor space from entering the first passage. 210.

In some optional embodiments, the air duct assembly 10 may further include a cylindrical filter screen 900, which is disposed at the air inlet end of the outer pipe 300, and surrounds the inner pipe 200, with openings on the cylinder wall. There are filter holes for filtering foreign matter. One end of the cylindrical filter 900 may be open so as to be connected with the opening edge of the air inlet end of the external pipeline 300 , so that the inner space of the cylindrical filter 900 communicates with the second channel 310 . The other end of the cylindrical filter screen 900 can be closed, for example, it can be an annular filter screen sleeved on the inner pipeline 200, so that the turbid air flow in the indoor space can only enter the cylindrical filter screen 900 through the filter holes. The inner space flows into the second channel 310 after being filtered.

Similar to the turbid air filter 700 , the cylindrical filter 900 can be formed by splicing two semi-cylindrical filters. For example, it can be installed in a split manner and fixedly connected with a buckle, which can realize quick and easy installation.

The embodiment of the present invention also provides an air conditioner. The air conditioner of this embodiment may generally include the air duct assembly 10 for air exchange as in any of the above embodiments, and may further include an indoor unit 20 . FIG. 9 is a schematic structural diagram of an indoor unit 20 of an air conditioner according to an embodiment of the present invention. The indoor unit 20 is the indoor part of the split room air conditioner, and is used to regulate indoor air, such as cooling/heating, dehumidification, introducing fresh air, and the like.

The internal pipeline 200 is a fresh air pipeline. The first passage 210 is used for connecting the outdoor space and the inner space of the cabinet 21, or for connecting the outdoor space and the indoor space where the indoor unit 20 of the air conditioner is located. The external pipeline 300 is a dirty wind pipeline. The second passage 310 is used for connecting the outdoor space with the indoor space where the indoor unit 20 of the air conditioner is located.

The air duct assembly 10 and the indoor unit 20 can be separated from each other and independently installed, of course, it can also be embedded at least partially inside the casing 21 of the indoor unit 20. For example, the internal airflow actuating device 500 of the air duct assembly 10 can be installed in the indoor unit. Inside the casing 21 , the fresh air outlet 512 of the volute 510 is connected to the air duct in the indoor unit casing 21 .

As shown in FIG. 9 , the indoor unit 20 may be wall-mounted, but is not limited thereto. It should be understood that the air duct assembly 10 according to the embodiment of the present invention can be applied to many air conditioning devices other than the wall-mounted indoor unit 20, such as a vertical cabinet unit, a window unit, and the like.

The indoor unit 20 of the embodiment of the present invention may be an indoor unit 20 of an air conditioner that performs cooling/heating through a compression refrigeration cycle system, and further includes a casing 21 and a blower fan 520 . The heat exchanger is arranged in the casing 21 and is used for exchanging heat with the airflow passing through it under the action of the air blower 520 to form a heat exchange airflow, that is, cold air or hot air.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. An air duct assembly for exchange of air flow, comprising:

an internal pipe having a first passage formed therein for flowing an air stream;

the external pipeline is sleeved outside the internal pipeline, and a second channel for circulating airflow is formed between the inner wall of the external pipeline and the outer wall of the internal pipeline; and

and the outer airflow actuating device is provided with a rotating part which is controlled and rotatably arranged, is communicated with the second passage in an airflow way and is isolated from the first passage and is used for promoting the formation of the airflow flowing through the second passage through rotation.

2. The air duct assembly of claim 1,

the rotating part comprises an impeller which is rotatably wound outside the inner pipeline, so that the impeller generates airflow thrust along the rotating axis direction when rotating, and airflow flowing through the second channel is promoted to be formed.

3. The air duct assembly of claim 2,

the impeller is provided with a plurality of blades, and the blades are arranged in the second channel and are distributed at intervals along the circumferential direction of the inner pipeline.

4. The air duct assembly of claim 3,

the impeller also comprises a hollow rotating shaft which is rotatably sleeved outside the internal pipeline; the hollow rotating shaft is provided with a first section at least partially extending into the second channel; and is

The blades are arranged on the first section and rotate synchronously with the first section.

5. The air duct assembly of claim 4,

the hollow rotating shaft is also provided with a second section which is at least partially positioned outside the second channel and is connected with the first section, and the second section is integrated with the first section or fixedly connected with the first section; and is provided with

The outer airflow actuating device further includes a power section to which the second section is connected to transmit a driving force from the power section to the first section and the plurality of blades.

6. The air duct assembly of claim 5,

the outer surface of the second section is provided with a ring gear, and a plurality of gear teeth are formed on the circumference of the ring gear to be connected with the power part through meshing action.

7. The air duct assembly of claim 6,

the power part includes:

a motor having an output shaft; and

and the transmission gear is meshed with the ring gear, and a rotating shaft of the transmission gear is fixedly connected with an output shaft of the motor.

8. The air duct assembly of claim 1,

the internal pipeline is a fresh air pipeline and is used for conveying fresh air flow; and is

The external pipeline is a dirty air pipeline which is used for conveying a dirty air flow.

9. The air duct assembly of claim 8, further comprising:

an inner airflow actuation device, comprising:

the volute is provided with a fresh air inlet communicated with the internal pipeline and a fresh air outlet used for communicating the working environment of the air duct assembly; and

and the fan is arranged in the volute and is controlled to rotate, and the fan is used for promoting the formation of airflow flowing through the first channel and flowing to the fresh air outlet through rotation.

10. An air conditioner comprising:

an air duct assembly for exchange of air streams as claimed in any one of claims 1 to 9.

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