Air duct structure, ventilation device and fresh air fan

Abstract

The present invention discloses an air duct structure, a ventilation device and a fresh air fan, the air duct structure comprises a shell, the shell is provided with a first through hole and a second through hole, the shell is provided with a first air duct and a second air duct, one of the openings of the first air duct is connected to the first through hole and the other opening of the first air duct is connected to the second through hole; one of the openings of the second air duct is connected to the first through hole and the other opening of the second air duct is connected to the second through hole; and a damper assembly, the damper assembly is used to selectively switch the first air duct or the second air duct; the air duct structure only needs to open a through hole in the outer wall during installation, the installation is simple and the destructive force on the outer wall is limited; the ventilation device and the fresh air fan include the above-mentioned air duct structure, therefore, the ventilation device and the fresh air fan have the advantages of easy installation and not easy to damage the outer wall.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation equipment, and in particular to an air duct structure, a ventilation device and a fresh air fan. Background Art

[0002] With the improvement of living standards, house ventilation becomes more and more important, low-energy ventilation equipment becomes more popular, and full heat recovery fresh air fans have also become mainstream products.

[0003] However, traditional fresh air fans generally have two air inlets and two air outlets. Therefore, during installation, corresponding through holes need to be opened in the outer wall. Since many through holes need to be opened, the construction is difficult during installation and the outer wall is easily damaged. Summary of the invention

[0004] Based on this, in order to address the problem that traditional fresh air fans require many through holes to be opened during installation, are difficult to construct, and are prone to damage to exterior walls, a duct structure, a ventilation device, and a fresh air fan are proposed. The duct structure only requires one through hole to be opened in the exterior wall during installation, and is simple to install with limited destructive power to the exterior wall. The ventilation device and the fresh air fan include the above-mentioned duct structure. Therefore, the ventilation device and the fresh air fan have the advantages of easy installation and not prone to damage to the exterior wall.

[0005] The specific technical solutions are as follows:

[0006] On the one hand, the present application relates to an air duct structure, comprising: a shell, the shell being provided with a first through hole and a second through hole, the shell being provided with a first air duct and a second air duct, one of the openings of the first air duct being connected to the first through hole and the other opening of the first air duct being connected to the second through hole; one of the openings of the second air duct being connected to the first through hole and the other opening of the second air duct being connected to the second through hole; and a damper assembly, the damper assembly being used to selectively switch on the first air duct or the second air duct.

[0007] When the above-mentioned air duct structure is in use, when the damper assembly connects the first air duct, the airflow can enter the first air duct along the second through hole and be discharged along the first through hole; similarly, when the damper assembly connects the second air duct, the airflow can enter the second air duct along the first through hole and be discharged along the second through hole; when the first air duct is used to transport outdoor air to indoors and the second air duct is used to transport indoor air to outdoors, at this time, only one through hole needs to be opened in the outer wall to realize the ventilation function, which is convenient to install and causes less damage to the outer wall.

[0008] The technical solution is further described below:

[0009] In one embodiment, the air duct structure also includes a first air duct component and a second air duct component, the first air duct component is connected to the inner wall of the shell, and the first air duct component and the inner wall of the shell are surrounded to form a first space, the first air duct component is provided with a third through hole and a fourth through hole arranged at intervals, and the third through hole, the fourth through hole and the first through hole are all connected to the first space; the second air duct component is connected to the inner wall of the shell, and the second air duct component and the inner wall of the shell are surrounded to form a second space, the second air duct component is provided with a fifth through hole and a sixth through hole arranged at intervals, and the fifth through hole, the sixth through hole and the second through hole are all connected to the second space; the first through hole, the first space, the fourth through hole, the fifth through hole, the second space and the second through hole are connected to form the first air duct; the first through hole, the first space, the third through hole, the sixth through hole, the second space and the second through hole are connected to form the second air duct.

[0010] In one embodiment, the damper assembly includes a first damper and a second damper, the first damper is used to selectively close the third through hole or the fourth through hole, and the second damper is used to selectively close the fifth through hole or the sixth through hole; wherein, when the first damper closes the third through hole and the second damper closes the sixth through hole, the first through hole, the first space, the fourth through hole, the fifth through hole, the second space and the second through hole are connected to form the first air duct; when the first damper closes the fourth through hole and the second damper closes the fifth through hole, the first through hole, the first space, the third through hole, the sixth through hole, the second space and the second through hole are connected to form the second air duct.

[0011] In one embodiment, the first damper is rotatably disposed in the first space, and the second damper is rotatably disposed in the second space.

[0012] In one embodiment, the air duct structure further includes a first elastic reset member, and the first air door is connected to the first air duct assembly through the first elastic reset member;

[0013] When the first elastic reset member is in a natural state, the first damper closes the fourth through hole;

[0014] When the first elastic return member is in a tensioned or compressed state, the first damper moves in a direction of closing the third through hole.

[0015] In one embodiment, the air duct structure further includes a second elastic reset member, and the second air door is connected to the second air duct assembly via the second elastic reset member;

[0016] When the second elastic reset member is in a natural state, the second damper closes the sixth through hole;

[0017] When the second elastic return member is in a tensioned or compressed state, the second damper moves in a direction to close the fifth through hole.

[0018] In one embodiment, the first air duct assembly includes a first baffle and a first partition, one end of the first baffle is connected to the inner wall of the shell, the other end of the first baffle is connected to one end of the first partition, the other end of the first partition is connected to the inner wall of the shell, the first partition, the inner wall of the shell and the first baffle are arranged to form the first space, the first baffle is provided with the third through hole, and the first partition is provided with the fourth through hole.

[0019] In one embodiment, the second air duct assembly includes a second baffle and a second partition, one end of the second baffle is connected to the inner wall of the shell, the other end of the second baffle is connected to one end of the second partition, the other end of the second partition is connected to the inner wall of the shell, the second partition, the inner wall of the shell and the second baffle are arranged to form the two spaces, the second baffle is provided with the fifth through hole, and the second partition is provided with the sixth through hole.

[0020] On the other hand, the present application also relates to a ventilation device, comprising the air duct structure in any of the above embodiments.

[0021] When the above-mentioned ventilation device is in use, when the damper assembly connects the first air duct, the airflow can enter the first air duct along the second through hole and be discharged along the first through hole; similarly, when the damper assembly connects the second air duct, the airflow can enter the second air duct along the first through hole and be discharged along the second through hole; when the first air duct is used to transport outdoor air to indoors and the second air duct is used to transport indoor air to outdoors, at this time, only one through hole needs to be opened in the outer wall to realize the ventilation function, which is convenient to install and causes less damage to the outer wall.

[0022] The technical solution is further described below:

[0023] In one embodiment, the ventilation device also includes a first fan and a second fan, the first fan is arranged in the first air duct to drive the airflow to move along the direction from the second through hole to the first through hole; the second fan is arranged in the second air duct to drive the airflow to move along the direction from the first through hole to the second through hole.

[0024] In one embodiment, the ventilation device also includes a first air duct component and a second air duct component, the first air duct component is connected to the inner wall of the shell, and the first air duct component and the inner wall of the shell are surrounded to form a first space, the first air duct component is provided with a third through hole and a fourth through hole arranged at intervals, and the third through hole, the fourth through hole and the first through hole are all connected to the first space; the second air duct component is connected to the inner wall of the shell, and the second air duct component and the inner wall of the shell are surrounded to form a second space, the second air duct component is provided with a fifth through hole and a sixth through hole arranged at intervals, and the fifth through hole, the sixth through hole and the second through hole are all connected to the second space; the first through hole, the first space, the fourth through hole, the fifth through hole, the second space and the second through hole are connected to form the first air duct; the first through hole, the first space, the third through hole, the sixth through hole, the second space and the second through hole are connected to form the second air duct.

[0025] In one embodiment, the air outlet end of the first fan is disposed at the fourth through hole, and the air outlet end of the second fan is disposed at the sixth through hole.

[0026] In one embodiment, the ventilation device further includes a controller, and the controller is used to selectively control the operation of the first fan or the operation of the second fan;

[0027] When the first fan is running, the first damper closes the third through hole and the second damper closes the sixth through hole;

[0028] When the second fan is running, the first damper closes the fourth through hole and the second damper closes the fifth through hole.

[0029] In one embodiment, the ventilation device also includes an energy storage component, which is arranged between the first air duct assembly and the second air duct assembly. The energy storage component is provided with a seventh through hole and an eighth through hole. The fourth through hole is connected to the fifth through hole through the seventh through hole, and the third through hole is connected to the sixth through hole through the eighth through hole.

[0030] In one embodiment, the energy storage component is a honeycomb-shaped ceramic energy storage component.

[0031] On the other hand, the present application also relates to a new air fan, including the ventilation device in any of the above embodiments; or including the air duct structure in any of the above embodiments.

[0032] When the above-mentioned fresh air fan is in use, when the damper assembly connects to the first air duct, the airflow can enter the first air duct along the second through hole and be discharged along the first through hole; similarly, when the damper assembly connects to the second air duct, the airflow can enter the second air duct along the first through hole and be discharged along the second through hole; when the first air duct is used to transport outdoor air to indoors and the second air duct is used to transport indoor air to outdoors, at this time, only one through hole needs to be opened in the outer wall to realize the ventilation function, which is convenient to install and causes less damage to the outer wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of a ventilation device;

[0034] Figure 2 It is a structural schematic diagram of the ventilation device in the suction state;

[0035] Figure 3 It is a structural schematic diagram of the ventilation device in the exhalation state.

[0036] Description of reference numerals:

[0037] 10. Ventilation device; 100. Shell; 110. First through hole; 120. Second through hole; 130. First space; 140. Second space; 200. First air duct assembly; 210. First baffle; 220. First partition; 300. Second air duct assembly; 310. Second baffle; 320. Second partition; 322. Sixth through hole; 410. First damper; 420. Second damper; 500. First fan; 600. Second fan; 700. Energy storage component. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0039] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] It is necessary to point out that when an element is referred to as being “fixed on” another element, the two elements may be integral or detachably connected.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0042] In addition, it should be understood that in this embodiment, the positional relationships indicated by the terms "lower", "upper", "front", "back", "left", "right", "inner", "outer", "top", "bottom", "one side", "the other side", "one end", "the other end", etc. are based on the positional relationships shown in the drawings; the terms "first", "second", etc. are used to distinguish different structural components. These terms are only used to facilitate the description of the present invention and simplify the description, and should not be understood as limiting the present invention.

[0043] like Figures 1 to 3 As shown, a ventilation device 10 in one embodiment includes an air duct structure, which includes: a shell 100 and a damper assembly, the shell 100 is provided with a first through hole 110 and a second through hole 120, the shell 100 is provided with a first air duct and a second air duct, one of the openings of the first air duct is connected to the first through hole 110 and the other opening of the first air duct is connected to the second through hole 120; one of the openings of the second air duct is connected to the first through hole 110 and the other opening of the second air duct is connected to the second through hole 120; the damper assembly is used to selectively switch the first air duct or the second air duct.

[0044] When the above-mentioned ventilation device 10 is in use, when the damper assembly connects the first air duct, the airflow can enter the first air duct along the second through hole 120 and be discharged along the first through hole 110; similarly, when the damper assembly connects the second air duct, the airflow can enter the second air duct along the first through hole 110 and be discharged along the second through hole 120; when the first air duct is used to transport outdoor air to indoors and the second air duct is used to transport indoor air to outdoors, at this time, only one through hole needs to be opened in the outer wall to realize the ventilation function, which is convenient to install and causes less damage to the outer wall.

[0045] Specifically in this embodiment, the air duct structure also includes a first air duct component 200 and a second air duct component 300, and the shell 100 is provided with a first through hole 110 and a second through hole 120; the first air duct component 200 is connected to the inner wall of the shell 100, and the first air duct component 200 and the inner wall of the shell 100 are surrounded to form a first space 130, and the first air duct component 200 is provided with a third through hole (not shown) and a fourth through hole (not shown) arranged at intervals, and the third through hole (not shown), the fourth through hole (not shown) and the first through hole 110 are all connected to the first space 130; the second air duct component 300 is connected to the inner wall of the shell 100, and the first air duct component 200 and the inner wall of the shell 100 are surrounded to form a first space 130, and the first air duct component 200 is provided with a third through hole (not shown) and a fourth through hole (not shown) arranged at intervals, and the third through hole (not shown), the fourth through hole (not shown) and the first through hole 110 are all connected to the first space 130; The second air duct assembly 300 and the inner wall of the shell 100 are arranged to form a second space 140. The second air duct assembly 300 is provided with a fifth through hole (not shown) and a sixth through hole 322 which are spaced apart. The fifth through hole (not shown), the sixth through hole 322 and the second through hole 120 are all connected to the second space 140; the first through hole 110, the first space 130, the fourth through hole, the fifth through hole, the second space 140 and the second through hole 120 are connected to form a first air duct (not shown); the first through hole 110, the first space 130, the third through hole, the sixth through hole 322, the second space 140 and the second through hole 120 are connected to form a second air duct (not shown).

[0046] Further, on the basis of the above embodiment, the damper assembly includes a first damper 410 and a second damper 420, the first damper 410 is used to selectively close the third through hole or the fourth through hole, and the second damper 420 is used to selectively close the fifth through hole or the sixth through hole 322; wherein, when the first damper 410 closes the third through hole and the second damper 420 closes the sixth through hole 322, the first through hole 110, the first space 130, the fourth through hole, the fifth through hole, the second space 140 and the second through hole 120 are connected to form a first air duct (not shown); when the first damper 410 closes the fourth through hole and the second damper 420 closes the fifth through hole, the first through hole 110, the first space 130, the third through hole, the sixth through hole 322, the second space 140 and the second through hole 120 are connected to form a second air duct (not shown). Based on this embodiment, the first damper 410 is rotatably disposed in the first space 130 for selectively closing the third through hole or the fourth through hole, and the second damper 420 is rotatably disposed in the second space 140 for selectively closing the fifth through hole or the sixth through hole 322 .

[0047] When the above-mentioned air duct structure is in use, since the first air duct component 200 and the inner wall of the shell 100 are surrounded to form a first space 130, the first through hole 110 is communicated with the first space 130, the second air duct component 300 and the inner wall of the shell 100 are surrounded to form a second space 140, and the second through hole 120 is communicated with the second space 140, when the first air door 410 closes the third through hole and the second air door 420 closes the sixth through hole 322, the first air duct is connected at this time, and the air flow can enter the second space 140 along the second through hole 120 and be transported along the first air duct until it is discharged along the first through hole 110; similarly, since the first air duct component 200 and the inner wall of the shell 100 are surrounded to form a first The first through hole 110 is connected to the first space 130, the second air duct assembly 300 and the inner wall of the shell 100 are arranged to form a second space 140, the second through hole 120 is connected to the second space 140, when the first air door 410 closes the fourth through hole and the fifth through hole is closed by the second air door 420, the second air duct is connected, and the air flow can enter the first space 130 along the first through hole 110 and be transported along the second air duct until it is discharged along the second through hole 120; when the first air duct is used to transport outdoor air to indoors and the second air duct is used to transport indoor air to outdoors, only one through hole needs to be opened in the outer wall to realize the ventilation function, which is convenient to install and causes less damage to the outer wall.

[0048] like Figures 1 to 3 As shown, further, in order to drive the airflow to flow in the first air duct and drive the airflow to flow in the second air duct, the ventilation device 10 also includes a first fan 500 and a second fan 600. The first fan 500 is arranged in the first air duct, and the air outlet end of the first fan 500 is arranged at the fourth through hole. Driven by the first fan 500, the airflow can move along the direction from the second through hole 120 to the first through hole 110, and at this time, the outdoor air can be transported to the indoor; the second fan 600 is arranged in the second air duct to drive the airflow to move along the direction from the first through hole 110 to the second through hole 120, and the air outlet end of the second fan 600 is arranged at the sixth through hole 322. Driven by the second fan 600, the airflow can move along the direction from the first through hole 110 to the second through hole 120, and at this time, the indoor air can be transported to the outdoors, thereby achieving ventilation.

[0049] Furthermore, in order to realize the alternating conduction between the first air duct and the second air duct, so as to realize the alternating inhalation of outdoor air and delivery of indoor air, in this embodiment, the ventilation device 10 further includes a controller, which is used to selectively control the operation of the first fan 500 or the operation of the second fan 600; Figure 2As shown, when the first fan 500 is running, the first damper 410 closes the third through hole and the second damper 420 closes the sixth through hole 322. At this time, the first air duct is connected. Under the action of the first fan 500, outdoor air can enter the first air duct through the second through hole 120 and be transported to the room along the first through hole 110, thereby realizing the "inhalation" function. Figure 3 As shown, when the second fan 600 is running, the first damper 410 closes the fourth through hole and the second damper 420 closes the fifth through hole, and the second air duct is connected. Under the action of the second fan 600, outdoor air can enter the second air duct through the first through hole 110 and be transported to the room along the second through hole 120, realizing the "exhalation" function. Specifically, the controller can be a single chip microcomputer or a micro control unit.

[0050] like Figures 1 to 3 As shown, further, in order to reduce the loss of heat of indoor air by fresh air, in this embodiment, the ventilation device 10 also includes an energy storage member 700, which is arranged between the first air duct assembly 200 and the second air duct assembly 300. The energy storage member 700 is provided with a seventh through hole (not shown) and an eighth through hole (not shown). The third through hole is connected to the sixth through hole 322 through the eighth through hole. At this time, when the indoor air enters the first space 130 along the first through hole 110 and is transported to the eighth through hole along the third through hole, the energy storage member 700 can absorb part of the energy of the indoor air and store it. The fourth through hole is connected to the fifth through hole through the seventh through hole. At this time, when the outdoor fresh air enters the first space 130 along the second through hole 110, and is transported to the eighth through hole along the third through hole, the energy storage member 700 can absorb part of the energy of the indoor air and store it. When the outdoor air enters the second space 140 and is transported to the seventh through hole along the fifth through hole, the outdoor air can absorb the energy stored in the energy storage component 700, and then the fresh air entering the room along the first through hole 110 has a certain amount of energy, so that the energy loss of the indoor air is relatively low; specifically, the energy storage component 700 is a honeycomb-shaped ceramic energy storage component 700, and the honeycomb-shaped ceramic energy storage component 700 can quickly absorb and release heat. In this embodiment, in order to improve the heat exchange efficiency of the energy storage component 700, the flow rate of the airflow passing through the honeycomb-shaped ceramic energy storage component 700 should be controlled to be ≤0.8m / s. Specifically, the flow rate of the airflow can be adjusted by adjusting the honeycomb structure of the honeycomb-shaped ceramic energy storage component 700.

[0051] Specifically, the first air duct assembly 200 may be an integrally formed plate, or may be formed by connecting plates, such as Figures 1 to 3As shown, specifically in this embodiment, the first air duct assembly 200 includes a first baffle 210 and a first partition 220, one end of the first baffle 210 is connected to the inner wall of the shell 100, the other end of the first baffle 210 is connected to one end of the first partition 220, the other end of the first partition 220 is connected to the inner wall of the shell 100, the first partition 220, the inner wall of the shell 100 and the first baffle 210 are arranged to form a first space 130, the first baffle 210 is provided with a third through hole, and the first partition 220 is provided with a fourth through hole.

[0052] Specifically, the first air duct assembly 200 may be an integrally formed plate, or may be formed by connecting plates, such as Figures 1 to 3 As shown, specifically in this embodiment, the second air duct assembly 300 includes a second baffle plate 310 and a second partition plate 320, one end of the second baffle plate 310 is connected to the inner wall of the shell 100, the other end of the second baffle plate 310 is connected to one end of the second partition plate 320, the other end of the second partition plate 320 is connected to the inner wall of the shell 100, the second partition plate 320, the inner wall of the shell 100 and the second baffle plate 310 are arranged to form two spaces, the second baffle plate 310 is provided with a fifth through hole, and the second partition plate 320 is provided with a sixth through hole 322.

[0053] Furthermore, in order to quickly switch the conduction state of the first air duct or the second air duct, the air duct structure also includes a first elastic reset member, and the first air door 410 is connected to the first air duct assembly 200 through the first elastic reset member; when the first elastic reset member is in a natural state, the first air door 410 closes the fourth through hole, and the fourth through hole is in a normally closed state. When the first fan 500 is started, the first air door 410 is driven to rotate under the force of the airflow. At this time, the first elastic reset member is in a tensile or compressive state, and under the action of the airflow, the first air door 410 moves in the direction of closing the third through hole. In this way, by using The force of the airflow can drive the first damper 410 to rotate, so that the first air duct is opened, and then the airflow can flow in the first air duct to realize the "inhalation" function, and no other driving mechanism is required, the response speed is fast, and the use is convenient. When the first fan 500 stops running, the first damper 410 rotates again to close the fourth through hole under the action of the first elastic reset member; specifically, when the first elastic reset member is connected to the first partition plate 220, the first elastic reset member is in a tension state under the action of the airflow, and when the first elastic reset member is connected to the first baffle plate 210, the first elastic reset member is in a compression state under the action of the airflow. Specifically, the first elastic reset member is a spring or an elastic rubber strip.

[0054] Similarly, the air duct structure further includes a second elastic reset member, and the second air door 420 is connected to the second air duct assembly 300 through the second elastic reset member; when the second elastic reset member is in a natural state, the second air door 420 closes the sixth through hole 322, and at this time the sixth through hole 322 is in a normally closed state; when the second fan 600 is started, the second air door 420 is driven to rotate under the force of the airflow, and at this time the second elastic reset member is in a tensioned or compressed state, and under the action of the airflow, the second air door 420 moves in the direction of closing the fifth through hole, so that the sixth through hole 322 is in a normally closed state. The second air duct is opened, and the air flow can flow in the second air duct to realize the "exhalation" function, and no other driving mechanism is required, the response speed is fast, and the use is convenient. When the second fan 600 stops running, the second damper 420 rotates again to close the sixth through hole 322 under the action of the second elastic reset member; specifically, when the second elastic reset member is connected to the second partition plate 320, the second elastic reset member is in a tension state under the action of the air flow, and when the second elastic reset member is connected to the second baffle plate 310, the second elastic reset member is in a compression state under the action of the air flow. Specifically, the second elastic reset member is a spring or an elastic rubber strip.

[0055] It is worth mentioning that one embodiment also involves a new air fan, including the ventilation device 10 in any of the above embodiments; or including the air duct structure in any of the above embodiments.

[0056] When the above-mentioned fresh air fan is in use, when the damper assembly connects the first air duct, the airflow can enter the first air duct along the second through hole 120 and be discharged along the first through hole 110; similarly, when the damper assembly connects the second air duct, the airflow can enter the second air duct along the first through hole 110 and be discharged along the second through hole 120; when the first air duct is used to transport outdoor air to indoors and the second air duct is used to transport indoor air to outdoors, at this time, only one through hole needs to be opened in the outer wall to realize the ventilation function, which is convenient to install and causes less damage to the outer wall.

[0057] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An air duct structure, characterized in that: include: A housing, wherein the housing is provided with a first through hole and a second through hole, wherein a first air duct and a second air duct are provided in the housing, wherein one opening of the first air duct is communicated with the first through hole and another opening of the first air duct is communicated with the second through hole; one opening of the second air duct is communicated with the first through hole and another opening of the second air duct is communicated with the second through hole; and A damper assembly, the damper assembly is used to selectively switch the first air duct or the second air duct; a first air duct component, the first air duct component is connected to the inner wall of the shell, and the first air duct component and the inner wall of the shell are surrounded to form a first space, the first air duct component is provided with a third through hole and a fourth through hole arranged at intervals, and the third through hole, the fourth through hole and the first through hole are all connected to the first space; The damper assembly comprises a first damper and a second damper, wherein the first damper is rotatably disposed in the first space, and the first damper rotates under the action of the airflow and is used to selectively close the third through hole or the fourth through hole; It also includes a first elastic reset member, and the first damper is connected to the first air duct assembly through the first elastic reset member; When the first elastic reset member is in a natural state, the first damper closes the fourth through hole; When the first elastic return member is in a tensioned or compressed state, the first damper moves in a direction of closing the third through hole.

2. The air duct structure according to claim 1, characterized in that: It also includes a second air duct component, which is connected to the inner wall of the shell, and the second air duct component and the inner wall of the shell are surrounded by a second space, the second air duct component is provided with a fifth through hole and a sixth through hole arranged at intervals, the fifth through hole, the sixth through hole and the second through hole are all connected to the second space; the first through hole, the first space, the fourth through hole, the fifth through hole, the second space and the second through hole are connected to form the first air duct; the first through hole, the first space, the third through hole, the sixth through hole, the second space and the second through hole are connected to form the second air duct.

3. The air duct structure according to claim 2, characterized in that: The second damper is used to selectively close the fifth through hole or the sixth through hole; Among them, when the first damper closes the third through hole and the second damper closes the sixth through hole, the first through hole, the first space, the fourth through hole, the fifth through hole, the second space and the second through hole are connected to form the first air duct; when the first damper closes the fourth through hole and the second damper closes the fifth through hole, the first through hole, the first space, the third through hole, the sixth through hole, the second space and the second through hole are connected to form the second air duct.

4. The air duct structure according to claim 3, characterized in that: The second damper is rotatably disposed in the second space.

5. The air duct structure according to claim 4, characterized in that: It also includes a second elastic reset member, and the second damper is connected to the second air duct assembly through the second elastic reset member; When the second elastic reset member is in a natural state, the second damper closes the sixth through hole; When the second elastic return member is in a tensioned or compressed state, the second damper moves in a direction to close the fifth through hole.

6. The air duct structure according to any one of claims 2 to 5, characterized in that: The first air duct assembly includes a first baffle and a first partition, one end of the first baffle is connected to the inner wall of the shell, the other end of the first baffle is connected to one end of the first partition, the other end of the first partition is connected to the inner wall of the shell, the first partition, the inner wall of the shell and the first baffle are arranged to form the first space, the first baffle is provided with the third through hole, and the first partition is provided with the fourth through hole.

7. The air duct structure according to any one of claims 2 to 5, characterized in that: The second air duct assembly includes a second baffle and a second partition, one end of the second baffle is connected to the inner wall of the shell, the other end of the second baffle is connected to one end of the second partition, the other end of the second partition is connected to the inner wall of the shell, the second partition, the inner wall of the shell and the second baffle are arranged to form the two spaces, the second baffle is provided with the fifth through hole, and the second partition is provided with the sixth through hole.

8. A ventilation device, characterized in that: The invention comprises the air duct structure as described in any one of claims 1 to 7.

9. The ventilation device according to claim 8, characterized in that: It also includes a first fan and a second fan, the first fan is arranged in the first air duct to drive the airflow to move from the second through hole to the first through hole; the second fan is arranged in the second air duct to drive the airflow to move from the first through hole to the second through hole.

10. The ventilation device according to claim 9, characterized in that: It also includes a first air duct component and a second air duct component, the first air duct component is connected to the inner wall of the shell, and the first air duct component and the inner wall of the shell are surrounded to form a first space, the first air duct component is provided with a third through hole and a fourth through hole arranged at intervals, and the third through hole, the fourth through hole and the first through hole are all connected to the first space; the second air duct component is connected to the inner wall of the shell, and the second air duct component and the inner wall of the shell are surrounded to form a second space, the second air duct component is provided with a fifth through hole and a sixth through hole arranged at intervals, and the fifth through hole, the sixth through hole and the second through hole are all connected to the second space; the first through hole, the first space, the fourth through hole, the fifth through hole, the second space and the second through hole are connected to form the first air duct; the first through hole, the first space, the third through hole, the sixth through hole, the second space and the second through hole are connected to form the second air duct.

11. The ventilation device according to claim 10, characterized in that: The air outlet end of the first fan is arranged at the fourth through hole, and the air outlet end of the second fan is arranged at the sixth through hole.

12. The ventilation device according to claim 10, characterized in that: Also included is a controller, the controller is used to selectively control the operation of the first fan or the operation of the second fan; When the first fan is running, the first damper closes the third through hole and the second damper closes the sixth through hole; When the second fan is running, the first damper closes the fourth through hole and the second damper closes the fifth through hole.

13. The ventilation device according to any one of claims 10 to 12, characterized in that: It also includes an energy storage component, which is arranged between the first air duct component and the second air duct component. The energy storage component is provided with a seventh through hole and an eighth through hole. The fourth through hole is connected to the fifth through hole through the seventh through hole, and the third through hole is connected to the sixth through hole through the eighth through hole.

14. The ventilation device according to claim 13, characterized in that: The energy storage component is a honeycomb-shaped ceramic energy storage component.

15. A new air blower, characterized in that: A ventilation device comprising any one of claims 8 to 14; or an air duct structure comprising any one of claims 1 to 8.

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