CN217383210U

CN217383210U - Indoor scavenger fan

Info

Publication number: CN217383210U
Application number: CN202221434462.0U
Authority: CN
Inventors: 王柱
Original assignee: Jiaxing Pova Electric Appliance Co ltd
Current assignee: Jiaxing Pova Electric Appliance Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-09-06
Anticipated expiration: 2032-06-08

Abstract

The utility model belongs to the technical field of domestic appliance, especially, relate to an indoor scavenger fan, include: a housing; the cover body is covered on the shell and forms a structure with a cavity inside with the shell; the air inlet is arranged on the cover body and communicated with the cavity; the exhaust pipe is arranged on the shell and communicated with the cavity; the fan assembly is arranged in the cavity and used for introducing airflow to the air inlet and discharging the airflow from the exhaust pipe; wherein, still include: and the anti-backflow component is arranged in the exhaust pipe and used for limiting the air flow to flow into the cavity from the exhaust pipe. The household ventilator is not frequently used, and in order to prevent dust from accumulating on the ventilator and cause indoor air pollution when outdoor wind flows against the indoor environment, the ventilator is provided with an anti-backflow component, and the anti-backflow component achieves the purpose.

Description

Indoor scavenger fan

Technical Field

The utility model belongs to the technical field of domestic appliance, especially, relate to an indoor scavenger fan.

Background

A ventilation fan is a type of equipment that enables the exchange of indoor and outdoor air. The ventilation modes of the ventilation fan include a discharge mode, a suction mode and a combined mode, wherein the discharge mode is used for entering air from a natural air inlet and discharging dirty air through the ventilation fan; the suction type is that fresh air is sucked through the ventilation fan, and dirty air is discharged from a natural exhaust port; and the air suction and the air exhaust are completed by the ventilator.

At present, a ventilator used in life generally comprises a mounting shell, a fan is connected in the mounting shell, and a motor drives fan blades to rotate so as to drive airflow, so that indoor air and outdoor air are exchanged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical problem who exists, provide one kind and can avoid the air to flow against the current and can prevent that the dust from entering into indoor scavenger fan.

In view of this, the utility model provides an indoor scavenger fan, include:

a housing;

the cover body is covered on the shell and forms a structure with a cavity inside with the shell;

the air inlet is arranged on the cover body and communicated with the cavity;

the exhaust pipe is arranged on the shell and communicated with the cavity;

the fan assembly is arranged in the cavity and used for introducing airflow to the air inlet and discharging the airflow from the exhaust pipe; wherein, still include:

the anti-backflow component is arranged in the exhaust pipe and used for limiting the airflow from the exhaust pipe to flow into the cavity;

the anti-reflux assembly comprises:

the mounting seat is arranged at the inner port of the exhaust pipe, and the middle part of the mounting seat is provided with a flow guide port which penetrates through the mounting seat;

the exhaust barrel is of a cylindrical structure with one open end, the open end of the exhaust barrel is connected with the mounting seat, the flow guide port is communicated with the inner cavity of the exhaust barrel, and the outer wall of the exhaust barrel is provided with a plurality of exhaust holes along the axial direction and the circumferential direction;

the sealing plug is arranged in the air exhaust barrel in a sliding manner along the length direction of the air exhaust barrel;

and the elastic part is arranged in the air exhaust barrel, is positioned between one end of the air exhaust barrel, which is far away from the mounting seat, and the sealing plug, and is used for driving the sealing plug to move and covering the flow guide port.

In this technical scheme, open fan assembly, indoor air can enter into the cavity through the air intake in, discharges from the exhaust pipe at last to the completion is to the exchange of indoor air. The household ventilator is not frequently used, and in order to prevent dust from accumulating on the ventilator and cause indoor air pollution when outdoor wind flows against the indoor environment, the ventilator is provided with an anti-backflow component, and the anti-backflow component achieves the purpose.

Specifically, after the fan assembly is started, indoor air flow flows to the chamber from the air inlet and then flows to the flow guide port on the mounting seat in the exhaust pipe, the air flow pushes the sealing plug to move in the direction away from the flow guide port and opens the flow guide port, and finally the air flow is discharged outwards through the exhaust hole on the exhaust cylinder; when the fan assembly is not started, the elastic assembly can tightly support the sealing plug on the flow guide port of the mounting seat under the elastic action of the elastic assembly and cover the flow guide port, so that the exhaust pipe is separated, and the backflow of outdoor air is avoided.

In the above technical solution, further, the elastic element is a spring, one end of the spring abuts against an end face of the exhaust cylinder far away from the mounting seat, and the other end abuts against the sealing plug.

In this technical scheme, adopt the spring to come as the elastic component, not only effectual, but also have simple to operate, characteristics such as low price have saved manufacturing cost.

In any of the above technical solutions, further, a sliding groove is formed in the inner wall of the air exhaust duct along the length direction of the air exhaust duct, and a sliding strip embedded into the sliding groove is arranged on the side wall of the sealing plug.

In this technical scheme, through set up the spout on the exhaust barrel, set up the draw runner on the sealing plug to make things convenient for the sealing plug to remove in the exhaust barrel.

In any of the above technical solutions, further, there are more than two sliding grooves and the sliding grooves are arranged on the air exhaust duct along the circumferential direction, and the sliding strips on the sealing plugs are consistent with the sliding grooves in number and in one-to-one correspondence.

In this technical scheme, through setting up a plurality of spouts and a plurality of draw runner to improve the stability of sealing plug in the exhaust section of thick bamboo.

In any of the above technical solutions, further, the sealing plug is made of a rubber material.

In the technical scheme, the sealing plug is made of rubber, and specifically, the sealing plug is made of hard rubber so as to improve the sealing performance of the flow guide port.

In any of the above technical solutions, further, the backflow prevention component is detachably disposed on an inner port of the exhaust pipe.

In this technical scheme, through preventing that the countercurrent assembly detachable installs in the exhaust pipe to convenient installation and dismantlement.

In any of the above technical solutions, further, the mounting seat is of an annular structure, an external thread is provided on an outer wall of the mounting seat, an annular mounting flange is provided on an inner wall of the exhaust pipe, the annular mounting flange is radially inwardly disposed, and an internal thread matched with the external thread on the mounting seat is provided on an inner wall of the mounting flange.

In this technical scheme, it is concrete, adopt threaded connection's mode to fix the mount pad in the exhaust pipe to make things convenient for the installation and the dismantlement of mount pad.

In any of the above technical solutions, further, the fan assembly includes:

a motor disposed within the chamber;

the impeller is arranged on an output shaft of the motor;

wherein, the motor is a shaded pole type motor, and the impeller is just opposite to the air inlet.

In the technical scheme, the motors generally used on the existing ventilating fans are all capacitance motors, and can generate larger noise when working, so that the technical scheme adopts a shaded pole type motor with low noise and low vibration performance.

The utility model has the advantages that: for household ventilator, the frequency of use is not high, in order to avoid dust accumulation in the exhaust pipe and pollution to indoor air when outdoor wind flows back to the indoor, a reverse flow preventing component is arranged for achieving the purpose under the action of the reverse flow preventing component.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of another view angle of the present invention;

fig. 3 is a schematic structural diagram of the fan assembly of the present invention;

fig. 4 is a schematic view of the internal structure of the present invention;

FIG. 5 is an enlarged view at A in FIG. 4;

the reference numbers in the figures are: 100. a housing; 200. a cover body; 300. an air inlet; 400. an exhaust duct; 410. a mounting flange; 500. a fan assembly; 510. a motor; 520. an impeller; 600. an anti-reflux assembly; 610. a mounting seat; 611. a flow guide port; 620. an exhaust duct; 621. an air exhaust hole; 622. a chute; 630. a sealing plug; 631. a slide bar; 640. an elastic member.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

In the description of the present application, 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. For convenience of description, the dimensions of the various features shown in the drawings are not necessarily drawn to scale. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It should be noted that in the description of the present application, the orientation or positional relationship indicated by the terms such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" and the like are generally based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of description only, and in the case of not making a reverse description, these orientation terms do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

It should be noted that, in the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Example 1:

as shown in fig. 1, fig. 2, fig. 4 and fig. 5, the present embodiment provides an indoor ventilator, including: a housing 100; a cover 200 covering the housing 100 and forming a structure with a cavity therein with the housing 100; an air inlet 300 disposed on the cover 200 and communicated with the chamber; an exhaust duct 400 disposed on the housing 100 and communicating with the chamber; a fan assembly 500 disposed in the chamber for introducing air flow into the intake port 300 and discharging the air flow from the exhaust duct 400;

wherein, still include: and a reverse flow prevention assembly 600 disposed in the exhaust duct 400 for limiting an air flow from the exhaust duct 400 into the chamber.

In the present embodiment, when the fan assembly 500 is turned on, indoor air enters the chamber through the air inlet 300 and is finally discharged through the exhaust duct 400, thereby completing the exchange of indoor air. For household ventilation fans, the frequency of use is generally not high, and in order to prevent dust from accumulating on the exhaust pipe 400 and to prevent indoor air from being polluted when outdoor wind flows against the indoor, the anti-backflow assembly 600 is arranged for this purpose, and under the action of the anti-backflow assembly 600, the purpose is achieved.

As shown in fig. 3 and 4, in the present embodiment, specifically, the fan assembly 500 includes: a motor 510 disposed within the chamber; an impeller 520 provided on an output shaft of the motor 510; wherein, the motor 510 is a shaded-pole motor 510, and the impeller 520 is opposite to the air inlet 300.

In this technical solution, the motors 510 commonly used in the ventilation fans are all capacitive motors 510, and when operating, a large noise is generated, so that the shaded pole motors 510 with low noise and low vibration performance are adopted in this technical solution.

As shown in fig. 4 and 5, in the present embodiment, specifically, the backflow prevention assembly 600 includes:

the mounting seat 610 is arranged at the inner port of the exhaust duct 400, and the middle of the mounting seat 610 is provided with a flow guide port 611 which penetrates through the mounting seat;

the air exhaust barrel 620 is of a cylindrical structure with an opening at one end, the opening end of the air exhaust barrel 620 is connected with the mounting seat 610, the flow guide port 611 is communicated with the inner cavity of the air exhaust barrel 620, and the outer wall of the air exhaust barrel 620 is provided with a plurality of air exhaust holes 621 along the axial direction and the circumferential direction;

a sealing plug 630 slidably disposed in the exhaust duct 620 along the length direction of the exhaust duct 620;

and the elastic element 640 is arranged in the exhaust barrel 620, is positioned between one end of the exhaust barrel 620 far away from the mounting seat 610 and the sealing plug 630, and is used for driving the sealing plug 630 to move and covering the flow guide port 611.

In the present technical solution, after the fan assembly 500 is started, indoor airflow flows to the chamber from the air inlet 300, then flows to the flow guide port 611 on the mounting seat 610 in the exhaust duct 400, and the airflow pushes the sealing plug 630 to move in a direction away from the flow guide port 611, and opens the flow guide port 611, and finally the airflow is exhausted outwards through the exhaust hole 621 on the exhaust duct 620; when the fan assembly 500 is not started, the elastic assembly tightly presses the sealing plug 630 against the flow guide opening 611 of the mounting seat 610 under the elastic force of the elastic assembly, and covers the flow guide opening 611, so that the exhaust pipe 400 is isolated, and the backflow of the outdoor air is avoided.

In this embodiment, the sealing plug 630 is made of rubber.

In this technical solution, the sealing plug 630 is made of rubber, specifically, hard rubber is used to improve the sealing performance of the diversion port 611.

As shown in fig. 5, in this embodiment, specifically, the elastic element 640 is a spring, one end of the spring abuts against an end surface of the air exhaust barrel 620 far away from the mounting seat 610, and the other end abuts against the sealing plug 630.

In the technical scheme, the spring is used as the elastic part 640, so that the effect is good, the spring has the characteristics of convenience in installation, low price and the like, and the production cost is saved.

As shown in fig. 5, in the present embodiment, preferably, the inner wall of the air exhaust duct 620 has a sliding groove 622 opened along the length direction thereof, and the side wall of the sealing plug 630 has a sliding strip 631 embedded in the sliding groove 622.

In the present embodiment, the sliding groove 622 is disposed on the exhaust tube 620, and the sliding strip 631 is disposed on the sealing plug 630, so as to facilitate the movement of the sealing plug 630 in the exhaust tube 620.

In this embodiment, preferably, there are more than two sliding grooves 622, and the sliding grooves 622 are disposed on the air exhaust duct 620 along the circumferential direction, and the number of the sliding strips 631 on the sealing plug 630 is the same as that of the sliding grooves 622, and the sliding strips correspond to one another.

In the present embodiment, the plurality of sliding grooves 622 and the plurality of sliding strips 631 are disposed to improve the stability of the sealing plug 630 in the exhaust funnel 620.

Example 2:

the present embodiment provides an indoor ventilation fan, which includes the technical solutions of the above embodiments, and further has the following technical features.

As shown in fig. 4 and 5, in the present embodiment, the backflow prevention member 600 is detachably disposed at the inner port of the exhaust duct 400.

In this technical scheme, through installing anti-reflux subassembly 600 detachable in exhaust pipe 400 to convenient installation and dismantlement.

Specifically, the mounting seat 610 is an annular structure, an external thread is formed on an outer wall of the mounting seat, an annular mounting flange 410 which is arranged radially inward is formed on an inner wall of the exhaust duct 400, and an internal thread which is matched with the external thread on the mounting seat 610 is formed on an inner wall of the mounting flange 410.

In this technical scheme, specifically, adopt threaded connection's mode to fix mount pad 610 in exhaust barrel 620 to make things convenient for the installation and the dismantlement of mount pad 610.

In the present embodiment, the exhaust duct 400 is further mounted on the casing 100 in a clamping manner, the length of the exhaust duct 400 is greater than that of the exhaust barrel 620, the mounting flange 410 is located at the mounting port of the exhaust duct 400, the mounting seat 610 is mounted on the mounting flange 410, and the exhaust barrel 620 is disposed in the exhaust duct 400.

While the embodiments of the present application have been described in connection with the drawings, the embodiments and features of the embodiments of the present application can be combined with each other without conflict and the present application is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present application as claimed.

Claims

1. An indoor ventilator, comprising:

a housing (100);

the cover body (200) is covered on the shell body (100) and forms a structure with a cavity inside with the shell body (100);

the air inlet (300) is arranged on the cover body (200) and is communicated with the cavity;

the exhaust pipe (400) is arranged on the shell (100) and communicated with the chamber;

a fan assembly (500) disposed in the chamber, for introducing an air flow into the intake opening (300) and discharging the air flow from the exhaust duct (400); it is characterized by also comprising:

the anti-backflow component (600) is arranged in the exhaust pipe (400) and is used for limiting the airflow from the exhaust pipe (400) to flow into the chamber;

the anti-backflow assembly (600) comprises:

the mounting seat (610) is arranged at the inner port of the exhaust pipe (400), and the middle of the mounting seat (610) is provided with a flow guide port (611) which penetrates through the mounting seat;

the air exhaust barrel (620) is of a cylindrical structure with an opening at one end, the opening end of the air exhaust barrel (620) is connected with the mounting seat (610), the flow guide port (611) is communicated with the inner cavity of the air exhaust barrel (620), and a plurality of air exhaust holes (621) are formed in the outer wall of the air exhaust barrel (620) along the axial direction and the circumferential direction;

the sealing plug (630) is arranged in the air exhaust barrel (620) in a sliding manner along the length direction of the air exhaust barrel (620);

and the elastic piece (640) is arranged in the air exhaust barrel (620), is positioned between one end of the air exhaust barrel (620) far away from the mounting seat (610) and the sealing plug (630), and is used for driving the sealing plug (630) to move and covering the flow guide port (611).

2. An indoor ventilation fan according to claim 1, wherein the elastic member (640) is a spring, one end of the spring abuts against an end surface of the exhaust duct (620) far away from the mounting seat (610), and the other end abuts against the sealing plug (630).

3. An indoor ventilation fan according to claim 1, wherein the inner wall of the ventilation duct (620) is provided with a sliding groove (622) formed along the length direction thereof, and the side wall of the sealing plug (630) is provided with a sliding strip (631) embedded into the sliding groove (622).

4. An indoor ventilation fan according to claim 3, wherein there are more than two sliding grooves (622) and the sliding grooves are circumferentially arranged on the air exhaust duct (620), and the sliding strips (631) on the sealing plugs (630) are in the same number as the sliding grooves (622) and are in one-to-one correspondence with the sliding grooves (622).

5. An indoor ventilation fan according to claim 3, wherein the sealing plug (630) is made of rubber material.

6. An indoor ventilator according to claim 1, characterized in that the backflow prevention assembly (600) is detachably disposed on the inner port of the exhaust duct (400).

7. An indoor ventilation fan according to claim 6, wherein the mounting seat (610) is of an annular structure, external threads are formed on the outer wall of the mounting seat, an annular mounting flange (410) which is arranged radially inwards is formed on the inner wall of the exhaust pipe (400), and internal threads which are matched with the external threads on the mounting seat (610) are formed on the inner wall of the mounting flange (410).

8. An indoor ventilator according to any one of claims 1 to 7, characterized in that said fan assembly (500) comprises:

a motor (510) disposed within the chamber;

an impeller (520) provided on an output shaft of the motor (510);

wherein the motor (510) is a shaded-pole motor (510), and the impeller (520) is opposite to the air inlet (300).