CN110657544B

CN110657544B - Fresh air device

Info

Publication number: CN110657544B
Application number: CN201911063236.9A
Authority: CN
Inventors: 宋鹏; 范哲柳; 程冬杰; 曹端辉; 安智; 罗镇雄; 张华波; 梁烘嘉
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2024-10-11
Anticipated expiration: 2039-10-31
Also published as: CN110657544A

Abstract

The present invention provides a fresh air device, comprising: a housing having a first connecting port, a second connecting port, and a connecting channel connected to the first connecting port and the second connecting port, wherein the first connecting port is used to connect to indoor air, and the second connecting port is used to connect to outdoor air; the airflow in the connecting channel has a first flow direction from the second connecting port to the first connecting port and a second flow direction from the first connecting port to the second connecting port; a filter is arranged in the connecting channel; a cleaning mechanism comprises a cleaning part, the cleaning part is arranged in contact with the filter, and the cleaning part is movably arranged on the filter; wherein, when the airflow in the connecting channel flows along the second flow direction, the cleaning part moves relative to the filter, so that dust on the surface of the filter falls off the filter through the cleaning part, and the dust is brought to the outside through the airflow in the connecting channel. The technical problem that it is inconvenient to clean the filter of the fresh air device in the prior art is solved.

Description

Fresh air device

Technical Field

The invention relates to the technical field of fresh air devices, in particular to a fresh air device.

Background

At present, the filter screen cleaning structure of the fresh air device generally comprises a brush, a driving motor and an ash storage box, and when dust and sundries are piled up in the ash storage box, the ash storage box needs to be manually disassembled for cleaning.

However, the fresh air device in the prior art cannot automatically perform cleaning treatment, and is inconvenient for a user to operate.

Disclosure of Invention

The invention mainly aims to provide a fresh air device to solve the technical problem that a filter element of the fresh air device is inconvenient to clean in the prior art.

In order to achieve the above object, the present invention provides a fresh air device, including: the shell is provided with a first communication port, a second communication port and a communication channel communicated with the first communication port and the second communication port, wherein the first communication port is used for being communicated with indoor air, and the second communication port is used for being communicated with outdoor air; the air flow in the communication channel has a first flow direction from the second communication port to the first communication port and a second flow direction from the first communication port to the second communication port; the filter piece is arranged in the communication channel and is used for filtering air in the communication channel; the cleaning mechanism comprises a cleaning part, the cleaning part is attached to the filter element, and the cleaning part is movably arranged on the filter element; when the air flow in the communication channel flows along the second flow direction, the cleaning part moves relative to the filter element, so that the dust accumulation on the surface of the filter element is separated from the filter element through the cleaning part, and the dust accumulation is brought outdoors through the air flow in the communication channel.

Further, the cleaning portion is a cleaning brush rotatably provided in the communication passage.

Further, the cleaning mechanism further includes: the fan blade is rotatably arranged in the communication channel, and the cleaning part is arranged on the fan blade, so that when the air flow in the communication channel drives the fan blade to rotate, the fan blade drives the cleaning part to rotate.

Further, the cleaning mechanism further includes: and the limiting assembly is at least partially used for being in butt joint with the cleaning part to limit the movement of the cleaning part through the limiting assembly when the airflow in the communication channel flows along the first flow direction.

Further, the cleaning mechanism further includes: the limiting assembly is at least partially used for being in butt joint and limiting with the fan blade, so that when the airflow in the communication channel flows along the first flow direction, the movement of the fan blade is limited by the limiting assembly.

Further, the fan blade is arranged on one side of the filter element, the limiting component is arranged on the other side of the filter element, and at least part of the limiting component is connected with the rotating shaft of the fan blade.

Further, the spacing subassembly includes: a pawl disposed on the housing; the ratchet wheel is rotatably arranged on the shell, the pawl is matched with the ratchet wheel, and the ratchet wheel is connected with the fan blade; when the air flow in the communication channel flows along the first flow direction, the pawl limits the rotation of the ratchet wheel; when the air flow in the communication channel flows along the second flow direction, the fan blade drives the ratchet wheel to rotate.

Further, the fresh air device still includes: the support is arranged on the shell, the support comprises an annular shell, a circulating channel surrounded by the annular shell is communicated with the communicating channel, and the pawl is arranged on the annular shell.

Further, the bracket further comprises: the other ends of the support arms are connected and arranged, and the pawl is arranged on any support arm.

Further, the filter piece is a filter screen, and the filter screen is arranged at the second communication port.

Further, the fresh air device still includes: the fan component is arranged on the shell and comprises driving blades, so that the flowing direction of air flow in the communication channel is changed by changing the direction of the driving blades.

By applying the technical scheme of the invention, when the air flow in the communication flows along the second flow direction, at the moment, the cleaning part moves relative to the filter element, and as the cleaning part is kept in fit with the filter element, the cleaning part can scrape off deposited dust on the surface of the filter element, and the deposited dust is carried to the outside by the air flow after falling off from the filter element, so that the automatic cleaning process of the filter element is finished, and the filter element of the fresh air device is convenient to clean. Therefore, through the technical scheme provided by the invention, the technical problem that the filter element of the fresh air device is inconvenient to clean in the prior art can be solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 shows an exploded view of a fresh air device provided in accordance with an embodiment of the present invention;

FIG. 2 shows a schematic flow direction of an air flow of the fresh air device when fresh air is introduced into a room according to an embodiment of the present invention;

FIG. 3 shows a schematic flow direction of an air flow of the fresh air device when exhausting fresh air in a room according to an embodiment of the present invention;

FIG. 4 shows a schematic structural view of the spacing assembly of FIG. 2;

FIG. 5 shows a schematic structural view of the spacing assembly of FIG. 3;

Fig. 6 shows a schematic structural diagram of a driving fan blade according to an embodiment of the present invention;

fig. 7 shows a front view of a driving fan blade according to an embodiment of the present invention; and

Fig. 8 shows a side view of a driving fan blade provided according to an embodiment of the present invention.

Wherein the above figures include the following reference numerals:

10. A housing; 11. a first communication port; 12. a second communication port; 20. a filter; 30. a cleaning mechanism; 31. a cleaning section; 32. a fan blade; 33. a limit component; 331. a pawl; 332. a ratchet wheel; 40. a bracket; 41. an annular housing; 42. a support arm; 50. a fan component; 51. driving the fan blade; 52. a volute; 60. a transmission shaft; 70. and (5) mounting a frame.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1 to 8, the embodiment of the present invention provides a fresh air device, which includes a housing 10, a filter 20, and a cleaning mechanism 30, wherein the housing 10 has a first communication port 11, a second communication port 12, and a communication channel provided in communication with both the first communication port 11 and the second communication port 12, the first communication port 11 is used for communicating with indoor air, the second communication port 12 is used for communicating with outdoor air, and an air flow in the communication channel has a first flow direction from the second communication port 12 to the first communication port 11 and a second flow direction from the first communication port 11 to the second communication port 12. Specifically, when the flow direction of the air flow is the first flow direction, the fresh air device is used for providing fresh air to the indoor. When the flow direction of the air flow is the second flow direction, the fresh air device is used for exhausting air outdoors. The filter 20 is disposed in the communication passage to filter air in the communication passage through the filter 20. The cleaning mechanism 30 includes a cleaning portion 31, the cleaning portion 31 is disposed in contact with the filter 20, and the cleaning portion 31 is movably disposed on the filter 20. When the air flow in the communication channel flows along the second flow direction, the cleaning part 31 moves relative to the filter element 20, so that the dust on the surface of the filter element 20 is separated from the filter element 20 by the cleaning part 31, and the dust is brought out of the room by the air flow in the communication channel. The housing 10 in this embodiment may be a ductwork.

With the fresh air device provided in this embodiment, when the fresh air device is used for exhausting air to the outside, the cleaning portion 31 moves relative to the filter 20, and the dust deposited on the surface of the filter 20 is scraped by the cleaning portion 31, so that the fallen dust deposited is brought to the outside under the action of air flow, thereby facilitating automatic cleaning of the filter 20. Therefore, through the technical scheme provided by the embodiment, the technical problem that the filter element 20 of the fresh air device is inconvenient to clean in the prior art can be solved.

In order to further improve the cleaning effect, the cleaning portion 31 in the present embodiment is a cleaning brush rotatably provided in the communication passage. Specifically, when the air flow in the communication passage flows in the second flow direction, the cleaning brush brushes down the dust accumulation on the surface of the filter 20 and discharges the dust accumulation to the outside through the air flow.

Specifically, the cleaning mechanism 30 in this embodiment further includes a fan blade 32, the fan blade 32 is rotatably disposed in the communication channel, and the cleaning portion 31 is disposed on the fan blade of the fan blade 32, so that when the air flow in the communication channel drives the fan blade 32 to rotate, the fan blade 32 drives the cleaning portion 31 to rotate. With such arrangement, the fan blade 32 can rotate under the action of the air flow, and the cleaning brush is driven by the fan blade 32 to brush down the dust on the filter element 20, so that the dust can be discharged outdoors through the air flow. By adopting the arrangement, the cleaning treatment of the filter element 20 can be completed without arranging an additional driving part for driving the fan blade 32, the structure is simple and reliable, and the manufacturing cost is reduced.

Specifically, the cleaning mechanism 30 in this embodiment further includes a limiting component 33, at least part of the limiting component 33 is configured to abut against and limit the cleaning portion 31, so that when the airflow in the communication channel flows along the first flow direction, the movement of the cleaning portion 31 is limited by the limiting component 33. Like this, when fresh air device introduced fresh air to indoor, clean portion 31 is restricted by spacing subassembly 33 and can not clean filter element 20, and then avoided introducing the fresh air in-process with the dust on the filter element 20 and brought indoor condition, improved the quality of fresh air to improve user's use comfort.

Specifically, at least a portion of the limiting component 33 in the present embodiment is configured to abut against and limit the fan blade 32, so that when the airflow in the communication channel flows along the first flow direction, the movement of the fan blade 32 is limited by the limiting component 33. With such arrangement, under the limiting action of the limiting component 33, when fresh air is introduced into a room by the fresh air device, the fan blades 32 will not drive the cleaning cloth to clean the filter element 20, so that dust accumulation on the filter element 20 can not be brought into the fresh air while the fresh air is introduced, the quality of air intake is further improved, and the use comfort of a user is better improved.

In this embodiment, the fan blade 32 is disposed on one side of the filter 20, the limiting component 33 is disposed on the other side of the filter 20, and at least part of the limiting component 33 is connected with the rotating shaft of the fan blade 32. By adopting the arrangement, the layout of the space can be more compact, and the limiting assembly is convenient to adjust, so that the cleaning part 31 is better limited by the limiting assembly 33, and the cleaning effect is better achieved.

Specifically, the limiting assembly 33 in the present embodiment includes a pawl 331 and a ratchet 332, and the pawl 331 is disposed on the housing 10. The ratchet 332 is rotatably arranged on the shell 10, the pawl 331 is matched with the ratchet 332, and the ratchet 332 is connected with the fan blade 32. When the air flow in the communication passage flows in the first flow direction, the claw catches the ratchet 332 to cause the pawl 331 to restrict the rotation of the ratchet 332. When the air flow in the communication channel flows along the second flow direction, the blades of the fan blade 32 rotate under the action of wind force, the fan blade 32 drives the ratchet wheel 332 to rotate, and the cleaning brush on the fan blade 32 stirs the dust on the filter element 20, so that the dust can be discharged outdoors through the air flow. With such arrangement, the ratchet 332 and the pawl 331 are simple in structure, convenient to manufacture, good in limiting effect, and convenient to reliably limit the cleaning portion 31.

In order to facilitate the installation of the limiting assembly 33, the fresh air device in this embodiment further includes a support 40, the support 40 is disposed on the housing 10, the support 40 includes an annular housing 41, a circulation channel surrounded by the annular housing 41 is communicated with the communication channel, a pawl 331 is disposed on the annular housing 41, and a ratchet 332 is disposed in the circulation channel. With such an arrangement, by arranging both the pawl 331 and the ratchet 332 on the bracket 40, the assembly of the pawl 331 and the ratchet 332 can be facilitated, so that the ratchet 332 and the pawl 331 can stably play a limiting role.

In order to further improve the structural stability of the support 40, the support 40 in this embodiment further includes a plurality of support arms 42, one ends of the plurality of support arms 42 are disposed on the annular housing 41 at intervals, the other ends of the plurality of support arms 42 are all disposed in a connecting manner, and the pawl 331 is disposed on any support arm 42. Specifically, the support 40 in this embodiment further includes an annular ring, the annular ring is located in the flow channel, the center line of the annular ring is overlapped with the center line of the annular housing 41, the number of the support arms 42 is three, one ends of the three support arms 42 are disposed on the inner wall of the annular housing 41, and the other ends of the three support arms 42 are disposed on the annular ring.

Specifically, the filter 20 in this embodiment is a filter screen, and the filter screen is disposed at the second communication port 12. By adopting the arrangement, outdoor fresh air can be filtered conveniently, so that the quality of the introduced fresh air is improved, and the use comfort of a user is further improved.

In this embodiment, to facilitate the installation of the fan blade 32, the fresh air device further includes a mounting frame 70, and the mounting frame 70 is located in the circulation channel. The mounting bracket 70 comprises a bracket body and a connecting part, wherein the bracket body is arranged on the housing 10, the connecting part is a connecting sleeve, the connecting sleeve is of a conical sleeve structure, conical protruding parts are arranged on the fan blades 32, the conical protruding parts are arranged on the connecting sleeve, the conical protruding parts can rotate in the connecting sleeve so as to drive the fan blades 32 to rotate under the action of air flow, and then the fan blades 32 drive the cleaning brush to clean the filter element 20. The fresh air device in this embodiment further includes a transmission shaft 60, one end of the transmission shaft 60 is connected with the rotating shaft of the fan blade 32, and the other end of the transmission shaft 60 passes through the filter element 20 and is connected with the ratchet 332, so that the rotation of the fan blade 32 is conveniently limited by the ratchet 332, and the limiting effect is reliably achieved.

In this embodiment, the fresh air device further includes a fan part 50, the fan part 50 is disposed on the housing 10, the fan part 50 includes a driving fan blade 51 and a motor, and the motor drives the driving fan blade 51 to rotate, so as to change the flow direction of the air flow in the communication channel by changing the direction of the driving fan blade 51. The fan assembly 50 in this embodiment further includes a volute 52, and the drive fan 51 is disposed within the volute 52.

As shown in fig. 2, with the fresh air device provided in this embodiment, the driving fan blade 51 is driven by the dc motor to rotate forward in a normal working state, which is also referred to as a fresh air conveying state, when the fresh air is conveyed, the outdoor air flows through the bracket 40, the ratchet 332 mechanism, the fan blade 32, the cleaning portion 31 and then flows to the air duct from outside, and finally enters the room after passing through the air duct in the volute 52, when the fresh air is conveyed, the flowing direction of the air enters the room from outside, so as to perform the function of conveying the fresh air. As shown in fig. 4, the fan blade 32 (with cleaning brush) is locked and fixed under force due to the pawl 331 in the ratchet 332 mechanism, and the fresh air delivering state continues for a long time, and meanwhile, dust is accumulated on the filter screen and accumulated along with time.

As shown in fig. 3, when the driving fan 51 stops normally delivering fresh air, a reverse voltage is applied to the motor at this time to drive the driving fan 51 to rotate reversely, which is called reverse rotation of the driving fan 32, in which indoor air can be discharged from the room, flows through the air duct in the volute 52, the driving fan 51, and then flows to the air duct to reach the fan 32, and finally is discharged to the outside through the ratchet 332 mechanism and the support 40 contacting the outside. As shown in fig. 5, in this state, the fan blade 32 (with brush cleaning brush) rotates under the wind force through the fan blade 32 itself, the brush (cleaning brush on the fan blade 32) rotates along with it, and during the rotation, the brush stirs the dust on the filter screen on the air duct, and at this time the ratchet 332 mechanism rotates along with the rotation shaft; at the same time, the dust deposited on the filter screen after being loosened by the brush (on the fan blade 32) is discharged outdoors along with the indoor wind from the indoor to the outdoor direction, thereby realizing the self-cleaning function.

From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: through changing the steering of motor drive fan blade, even drive fan blade switches in positive and negative rotation, can make the tuber pipe can air inlet and air-out, can blow the dust that is stirred by brush (cleaning brush) on the filter screen outdoor during the air-out, play clean effect.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fresh air device, characterized by comprising:

A housing (10), the housing (10) comprising a first communication port (11), a second communication port (12) and a communication passage arranged to communicate with the first communication port (11) and the second communication port (12), the first communication port (11) being used to communicate with indoor air, and the second communication port (12) being used to communicate with outdoor air; an airflow in the communication passage having a first flow direction from the second communication port (12) to the first communication port (11) and a second flow direction from the first communication port (11) to the second communication port (12);

A filter element (20) is arranged in the communication channel to filter the air in the communication channel through the filter element (20);

A cleaning mechanism (30), the cleaning mechanism (30) comprising a cleaning portion (31), a fan blade (32) and a limiting assembly (33), the cleaning portion (31) being arranged in close contact with the filter element (20), and the cleaning portion (31) being movably arranged on the filter element (20); the fan blade (32) being rotatably arranged in the connecting passage, the cleaning portion (31) being arranged on a blade of the fan blade (32), so that when the airflow in the connecting passage drives the fan blade (32) to rotate, the cleaning portion (31) is driven to rotate by the fan blade (32); at least a part of the limiting assembly (33) is used for abutting and limiting the fan blade (32), so that when the airflow in the connecting passage flows along the first flow direction, the movement of the fan blade (32) is limited by the limiting assembly (33);

When the airflow in the connecting channel flows along the second flow direction, the cleaning portion (31) moves relative to the filter element (20), so that dust accumulated on the surface of the filter element (20) falls off the filter element (20) through the cleaning portion (31), and the dust is brought outdoors through the airflow in the connecting channel;

The limiting component (33) comprises:

A ratchet pawl (331) is arranged on the housing (10);

The ratchet (332) is rotatably arranged on the housing (10), the pawl (331) is matched with the ratchet (332), and the ratchet (332) is connected to the fan blade (32); when the airflow in the connecting channel flows along the first flow direction, the pawl (331) limits the rotation of the ratchet (332); when the airflow in the connecting channel flows along the second flow direction, the fan blade (32) drives the ratchet (332) to rotate.

2. The fresh air device according to claim 1 is characterized in that the cleaning part (31) is a cleaning brush, and the cleaning brush is rotatably arranged in the connecting channel.

3. The fresh air device according to claim 1, characterized in that the cleaning mechanism (30) further comprises:

A limiting component (33), at least a portion of which is used to abut and limit the cleaning portion (31), so that when the airflow in the connecting channel flows along the first flow direction, the movement of the cleaning portion (31) is limited by the limiting component (33).

4. The fresh air device according to claim 1 is characterized in that the fan blade (32) is arranged on one side of the filter element (20), the limit assembly (33) is arranged on the other side of the filter element (20), and at least a part of the limit assembly (33) is connected to the rotating shaft of the fan blade (32).

5. The fresh air device according to claim 1, characterized in that the fresh air device further comprises:

A bracket (40), wherein the bracket (40) is arranged on the housing (10), the bracket (40) comprises an annular shell (41), a flow channel surrounded by the annular shell (41) is connected to the communication channel, and the pawl (331) is arranged on the annular shell (41).

6. The fresh air device according to claim 5, characterized in that the bracket (40) further comprises:

A plurality of support arms (42), one ends of the plurality of support arms (42) are arranged at intervals on the annular housing (41), the other ends of the plurality of support arms (42) are all connected, and the ratchet (331) is arranged on any of the support arms (42).

7. The fresh air device according to claim 1, characterized in that the filter element (20) is a filter net, and the filter net is arranged at the second connecting port (12).

8. The fresh air device according to claim 1, characterized in that the fresh air device further comprises:

A fan component (50), wherein the fan component (50) is arranged on the housing (10), and the fan component (50) comprises a driving blade (51) so as to change the flow direction of the airflow in the connecting channel by changing the direction of the driving blade (51).