Adjustable exhaust fan and adjustable exhaust method

Abstract

This invention belongs to the field of airflow regulation devices and discloses an adjustable exhaust fan and an adjustable exhaust method. The adjustable exhaust fan includes a main motor, fan blades, a support shell, an adjustment component, and an adjustment drive. The fan blades are mounted on the output shaft of the main motor. The support shell has a central accommodating space and an internal air duct on its side. The front and rear ends of the accommodating space communicate with the outside. The main motor is installed within the accommodating space. The internal air duct includes a first port and a second port. The first port communicates with the outside on one side of the front end of the accommodating space, and the second port communicates with the accommodating space. The adjustment component is installed at the rear end of the accommodating space. The adjustment drive drives the adjustment component to move, causing the adjustment component to move between closing the rear end of the accommodating space and closing the second port of the internal air duct. This allows for adjustment of the airflow direction, enabling the exhaust fan to have multiple functions.

Description

Technical Field

[0001] This invention belongs to the field of airflow regulation devices, specifically relating to an adjustable exhaust fan and an adjustable exhaust method. Background Technology

[0002] Airflow control devices come in various forms, the most common being exhaust fans, which are used to expel indoor air to the outside, achieving air exchange between indoor and outdoor environments. Exhaust fans are very common in daily life; for example, exhaust fans in factories can quickly ventilate and exchange indoor air in hot summers, achieving a cooling effect and expelling stale indoor air to replace it with fresh outside air. They are also frequently used in homes, similarly for air exchange. However, current exhaust fans have relatively limited functionality, only providing basic airflow, which is insufficient to meet people's actual usage requirements. Summary of the Invention

[0003] The purpose of this invention is to provide an adjustable exhaust fan and an adjustable exhaust method, which can adjust the direction of airflow, enabling the exhaust fan to have multiple functions.

[0004] The technical solution is as follows:

[0005] An adjustable exhaust fan includes a main motor, fan blades, a support housing, an adjustment assembly, and an adjustment drive. The fan blades are mounted on the output shaft of the main motor. The support housing has a accommodating space in the middle and an internal air duct on the side. The front and rear ends of the accommodating space are connected to the outside. The main motor is installed in the accommodating space. The internal air duct includes a first port and a second port. The first port is connected to the outside on the front side of the accommodating space, and the second port is connected to the accommodating space. The adjustment assembly is installed at the rear end of the accommodating space. The adjustment drive drives the adjustment assembly to move, causing the adjustment assembly to move between closing the rear end of the accommodating space and closing the second port of the internal air duct.

[0006] In one embodiment, the adjustment assembly includes a baffle and a drive member, the baffle being rotatably mounted at the rear end of the accommodating space, and the drive member driving the baffle to move between closing the rear end of the accommodating space and closing the second port of the internal air duct.

[0007] In one embodiment, the second port is located near the rear end of the receiving space, and the baffle can be flipped inward to close the second port.

[0008] In one embodiment, the driving member includes a first link and a second link, one end of the second link is rotatably connected to the first link, and the other end is rotatably connected to the wind deflector. The adjusting drive member pushes the first link to move, causing the second link to drive the wind deflector to rotate.

[0009] In one embodiment, when the wind deflector is flipped to close the second port, an acute angle is formed between the second link and the wind deflector.

[0010] In one embodiment, when the wind deflector is flipped to close the second port, a clearance is formed between the first connecting rod and the wind deflector, the clearance being larger than the thickness of the wind deflector.

[0011] In one embodiment, the adjustment drive includes an adjustment motor and a first mating component. The first mating component is mounted on the output shaft of the adjustment motor. The adjustment assembly includes a second mating component, and the first mating component mates with the second mating component. The rotation of the adjustment motor drives the first mating component to rotate, thereby causing the second mating component to move linearly along the first mating component.

[0012] In one embodiment, a guide vane is provided on the first port, and the guide vane is opened when air is discharged or introduced at the first port.

[0013] In one embodiment, the adjustable exhaust fan further includes a PCT heater and a negative ion generator; the PCT heater is located closer to the rear end of the receiving space than the fan blades; the negative ion electrode of the negative ion generator is installed at the front end of the receiving space.

[0014] The adjustable exhaust method uses an adjustable exhaust fan and includes the following steps:

[0015] Start the air exhaust process;

[0016] The adjustment drive controls the adjustment assembly to open the rear end of the accommodating space;

[0017] The main motor drives the fan blades to rotate, causing air to flow from the front end of the containment space to the rear end of the containment space;

[0018] Start the air circulation program;

[0019] The adjustment drive controls the adjustment assembly to close the rear end of the accommodating space and open the second port of the internal air duct;

[0020] The main motor drives the fan blades to rotate, causing air to flow from the front of the containment space through the inner air duct to the first port, or causing air to flow from the first port through the inner air duct to the front of the containment space.

[0021] Initiate integrated air quality control procedures;

[0022] The adjustment drive controls the adjustment assembly to open the rear end of the accommodating space and the second port of the internal air duct;

[0023] The main motor drives the fan blades to rotate, causing air to flow from the front end of the containment space to the rear end of the containment space, and at the same time, it causes air to flow from the front end of the containment space through the inner air duct to the first port.

[0024] The technical solution provided by this invention has the following advantages and effects:

[0025] After the adjustable exhaust fan is installed, you can select the activation program. When the air exhaust program is activated, the adjusting component moves to the position where the rear of the receiving space is open, driven by the adjusting drive. The main motor drives the fan blades to rotate, creating a negative pressure at the front of the receiving space. This causes indoor air to continuously flow from the front to the rear of the receiving space, thus exhausting it outdoors, completing one exhaust function. When the air circulation program is activated, the adjusting component moves to the position where the rear of the receiving space is closed, driven by the adjusting drive. At this time, the second port of the internal air duct opens, connecting the internal air duct to the receiving space. The main motor drives the fan blades to rotate, creating a negative pressure at the front of the receiving space. This causes indoor air to continuously flow from the front of the receiving space to the second port of the internal air duct, and finally exhausts it into the room through the first port of the internal air duct, achieving indoor air circulation. By adjusting the function of the adjusting component, the direction of airflow is changed, thus achieving either exhaust or circulation of indoor air to meet various usage scenarios. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the adjustable exhaust fan housing space of the present invention when the rear end is open.

[0027] Figure 2 This is a two-dimensional structural diagram of the adjustable exhaust fan housing space of the present invention when the rear end is open.

[0028] Figure 3 This is a cross-sectional view of the adjustable exhaust fan housing space of the present invention when the rear end is open.

[0029] Figure 4 This is a cross-sectional view of the right side of the adjustable exhaust fan housing space of the present invention when the rear end is open.

[0030] Figure 5 This invention is an adjustable exhaust fan. Figure 3 Enlarged structural diagram at point A in the middle;

[0031] Figure 6This is a two-dimensional structural diagram of the adjustable exhaust fan housing space of the present invention when the rear end is closed.

[0032] Figure 7 This is a cross-sectional view of the adjustable exhaust fan housing space of the present invention when the rear end is closed.

[0033] Figure 8 This invention is an adjustable exhaust fan. Figure 7 Enlarged structural diagram at point B;

[0034] Figure 9 This is a cross-sectional view of the adjustable exhaust fan housing space of the present invention when the rear end is closed.

[0035] Figure 10 This is a cross-sectional view of the adjustable exhaust fan housing space rear end and the second port of the present invention, which are opened simultaneously.

[0036] Explanation of reference numerals in the attached figures:

[0037] 10. Main motor; 20. Fan blades; 30. Support shell; 31. Accommodation space; 32. Inner air duct; 321. First port; 322. Second port; 33. Air guide plate; 40. Adjustment component; 41. Baffle plate; 42. Drive component; 421. First connecting rod; 422. Second connecting rod; 50. Adjustment drive component; 51. First mating component; 52. Second mating component; 53. Adjustment motor; 60. PCT heater; 70. Negative ion electrode; 80. Protective net. Detailed Implementation

[0038] To facilitate understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0039] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0040] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0041] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0042] like Figures 1 to 8As shown, the adjustable exhaust fan includes a main motor 10, fan blades 20, a support shell 30, an adjustment component 40, and an adjustment drive component 50. The fan blades 20 are mounted on the output shaft of the main motor 10. The support shell 30 has a receiving space 31 in the middle and an inner air duct 32 on the side. The front and rear ends of the receiving space 31 are connected to the outside. The main motor 10 is installed in the receiving space 31. The inner air duct 32 includes a first port 321 and a second port 322. The first port 321 is connected to the outside on the front side of the receiving space 31, and the second port 322 is connected to the receiving space 31. The adjustment component 40 is installed at the rear end of the receiving space 31. The adjustment drive component 50 drives the adjustment component 40 to move, causing the adjustment component 40 to move between closing the rear end of the receiving space 31 and closing the second port 322 of the inner air duct 32.

[0043] After the adjustable exhaust fan is installed, the start program can be selected. When the air exhaust program is started, the adjusting component 40 moves to the position where the rear end of the receiving space 31 is open under the action of the adjusting drive component 50; the main motor 10 drives the fan blades 20 to rotate. At this time, under the action of the fan blades 20, a negative pressure is formed at the front end of the receiving space 31, causing indoor air to continuously flow from the front end of the receiving space 31 to the rear end of the receiving space 31, thereby exhausting it outdoors, completing one exhaust function. When the air circulation program is started, the adjusting component 40 moves to the position where the rear end of the receiving space 31 is closed under the action of the adjusting drive component 50. At this time, the second port 322 of the inner air duct 32 is open, that is, the inner air duct 32 is connected to the receiving space 31; the main motor 10 drives the fan blades 20 to rotate. At this time, under the action of the fan blades 20, a negative pressure is formed at the front end of the receiving space 31, causing indoor air to continuously flow from the front end of the receiving space 31 to the second port 322 of the inner air duct 32, and finally exhaust it into the room through the first port 321 of the inner air duct 32, realizing indoor air circulation. By adjusting the function of component 40, the direction of airflow is changed, thereby achieving indoor air exhaust or circulation, thus meeting various usage scenarios.

[0044] like Figure 1 and Figure 2 As shown, the support shell 30 is provided with a rectangular outer frame, the first port 321 of the inner air duct 32 is provided on the frame, and the first port 321 is provided on all four edges of the frame.

[0045] like Figure 3 and Figure 4As shown, the adjustment assembly 40 includes a baffle plate 41 and a driving member 42. The baffle plate 41 is rotatably mounted at the rear end of the accommodating space 31. The driving member 42 drives the baffle plate 41 to move between closing the rear end of the accommodating space 31 and closing the second port 322 of the inner air duct 32. The baffle plate 41 is moved by the driving member 42, which is driven by the adjustment drive member 50. Therefore, the adjustment drive member 50 ultimately controls the rotation position of the baffle plate 41, thereby controlling whether the rear end of the accommodating space 31 is closed and whether the second port 322 of the inner air duct 32 is closed.

[0046] The wind deflector 41 can be rotatably connected to the rear end of the receiving space 31 via a shaft hole, or it can be rotatably installed at the rear end of the receiving space 31 via a rotating assembly. In this embodiment, the former rotatable installation method is used.

[0047] like Figure 3 and Figure 4 As shown, the second port 322 is located near the rear end of the receiving space 31. The baffle plate 41 can be flipped inward to close the second port 322. This arrangement ensures that when the rear end of the receiving space 31 is fully opened, the baffle plate 41 simultaneously blocks the second port 322, thus closing the connection between the receiving space 31 and the inner air duct 32. At this time, airflow cannot enter the inner air duct 32 and flows out entirely from the rear end of the receiving space 31. Similarly, when it is necessary to close the rear end of the receiving space 31, the baffle plate 41 rotates to close the rear end of the receiving space 31, which opens the second port 322 of the inner air duct 32. That is, the inner air duct 32 and the receiving space 31 are open, so air can flow through the inner air duct 32, achieving air circulation.

[0048] It should be noted that, for ease of description, the rotation direction of the main motor 10 when the air exhaust program is started is defined as forward. When the air circulation program is started, the rotation direction of the main motor 10 can be either forward or reverse. When the air circulation program is started, the main motor 10 rotates forward, and the airflow direction is as follows: Figure 9 As indicated by the arrow, air enters from the front of the receiving space 31, flows into the second port 322, and finally exits through the first port 321; when the air circulation is started, the main motor 10 reverses direction, and the air flow direction is the same as... Figure 9 The arrows point in opposite directions, meaning air enters from the first port 321, passes through the inner air duct 32, the second port 322, and the receiving space 31 in sequence, and finally flows out from the front end of the receiving space 31. In this embodiment, the main motor 10 is in the positive direction when the air circulation is started.

[0049] like Figure 4 and Figure 5 as well as Figure 7 and Figure 8As shown, the driving component 42 includes a first connecting rod 421 and a second connecting rod 422. One end of the second connecting rod 422 is rotatably connected to the first connecting rod 421, and the other end is rotatably connected to the wind deflector 41. The adjusting drive component 50 pushes the first connecting rod 421 to move, causing the second connecting rod 422 to drive the wind deflector 41 to rotate. When the wind deflector 41 rotates, its direction changes. At this time, the adjustment of the second connecting rod 422 adapts to the change in the direction of the wind deflector 41. Therefore, the first connecting rod 421 only needs to provide a movement in one direction, thus reducing the difficulty of providing power to the adjusting drive component 50. This allows the adjusting drive component 50 to complete the rotation of the wind deflector 41 by only providing a forward or backward force.

[0050] like Figure 4 and Figure 5 As shown, when the wind deflector 41 flips to close the second port 322, an acute angle is formed between the second connecting rod 422 and the wind deflector 41. Since the first connecting rod 421 moves in a straight line (back and forth), while the wind deflector 41 rotates, when the second connecting rod 422 is nearly parallel to the wind deflector 41, it is easy for the second connecting rod 422 to fail to provide a downward force to the wind deflector 41, causing the wind deflector 41 to move to the rear end of the fully opened accommodating space 31 and then get stuck, unable to continue flipping. Therefore, the acute angle set in this design ensures that the second connecting rod 422 can always provide a downward force to drive the wind deflector 41 to flip. Specifically, this acute angle is not less than 5 degrees, and in this embodiment, it is set to 13 degrees.

[0051] like Figure 4 and Figure 5 As shown, when the wind deflector 41 is flipped to close the second port 322, a clearance gap is formed between the first connecting rod 421 and the wind deflector 41. The size of the clearance gap is greater than the thickness of the wind deflector 41. In order to ensure that the wind deflector 41 always has a position when it is flipped, this clearance gap ensures that the wind deflector 41 will not be blocked by the first connecting rod 421 when it is flipped.

[0052] like Figure 5 and Figure 8 As shown, a clearance notch is provided on the side wall of the second port 322. This clearance notch provides a clearance position for the first link 421 when it retracts, ensuring that the travel of the first link 421 is sufficient to fully open the rear end of the receiving space 31.

[0053] In this embodiment, multiple wind deflectors 41 are provided, and multiple second connecting rods 422 are provided accordingly. Each second connecting rod 422 is rotatably connected to a first connecting rod 421, and the first connecting rod 421 can be one or multiple.

[0054] See Figure 2 and Figure 6 As shown, two intersecting support rods are provided at the rear end of the accommodating space 31, forming four areas at the rear end of the accommodating space 31. The rotation axes of the wind deflectors 41 in the two diagonally opposite areas are parallel, while the rotation axes of the wind deflectors 41 in the two adjacent areas are perpendicular. Figure 7 As shown, the corresponding first link 421 is configured in a cross shape, and multiple second links 422 are rotatably connected to the first link 421. Therefore, the adjustment drive 50 only needs to drive one of the first links 421.

[0055] like Figure 5 As shown, the adjustment drive component 50 includes an adjustment motor 53 and a first mating component 51. The first mating component 51 is mounted on the output shaft of the adjustment motor 53. The adjustment assembly 40 includes a second mating component 52, and the first mating component 51 and the second mating component 52 are mated together. The rotation of the adjustment motor 53 drives the first mating component 51 to rotate, thereby causing the second mating component 52 to move linearly along the first mating component 51. The adjustment drive component 50 drives the movement of the first mating component 51 through the adjustment motor 53, and after the second mating component 52 is mated with the first mating component 51, it achieves a back-and-forth movement. Therefore, the second mating component 52 drives the overall movement of the entire adjustment assembly 40.

[0056] Specifically, such as Figure 4 As shown, the regulating motor 53 is coaxial with the main motor 10 and in the opposite direction, so the regulating motor 53 obstructs the airflow and hardly affects the flow of air.

[0057] Specifically, in this embodiment, the first mating component 51 is a screw, and the second mating component 52 is a nut. The nut mates with the screw, and the nut is fixed to the first connecting rod 421. Adjusting the forward and reverse rotation of the motor 53 drives the screw to rotate, thereby causing the nut to move back and forth, thus realizing the back and forth movement of the first connecting rod 421. In other embodiments, the first mating component 51 can be a lead screw, and the second mating component 52 can be a lead screw seat. The lead screw seat moves back and forth along the lead screw through the mating between the lead screw and the lead screw seat.

[0058] like Figure 9 As shown, a guide vane 33 is provided on the first port 321. When air is discharged or received at the first port 321, the guide vane 33 is opened. When the air circulation program is started, the main motor 10 rotates forward. At this time, the guide vane 33 is mainly pushed open by the air. Since the guide vane 33 forms an angle with the axis of the main motor 10, the air discharge direction of the first port 321 is different from the air intake direction at the front end of the receiving space 31, which can effectively improve the circulation efficiency.

[0059] In other embodiments, the air guide plate 33 can be configured to be driven by a power mechanism, and its angle can be adjusted as needed to achieve adjustable air outlet direction of the first port 321, or to achieve adjustable air inlet direction of the first port 321 when the main motor 10 reverses.

[0060] The adjustable exhaust fan also includes a PCT heater 60 and a negative ion generator; the PCT heater 60 is located closer to the rear end of the receiving space 31 than the fan blades 20; the negative ion electrode 70 of the negative ion generator is installed at the front end of the receiving space 31. When the air circulation function is activated, the user can select whether the PCT heater 60 and the negative ion generator are turned on. Turning on the PCT heater 60 provides heating, while turning on the negative ion generator provides air purification.

[0061] Specifically, the adjustable exhaust fan is also equipped with a protective net 80, which is installed at the front end of the accommodating space 31, and the negative ion electrode 70 is installed on the protective net 80.

[0062] In this embodiment, an air conditioning integration procedure is also provided, such as... Figure 10 As shown, when the air integration program is started, the baffle plate 41 rotates to the middle state, so that the second port 322 is opened and the rear end of the accommodating space 31 is partially opened. At this time, when the main motor 10 rotates forward, air enters from the front end of the accommodating space 31, part of it flows out through the rear end of the accommodating space 31, and part of it flows out from the first port 321 through the inner air duct 32.

[0063] Of course, when the integrated air program is started, the degree to which the rear end of the containment space 31 is opened is not as great as when the air exhaust program is started; the degree to which the second port 322 is opened is not as great as when the air recirculation program is started.

[0064] Specifically, the adjustable exhaust method uses an adjustable exhaust fan and includes the following steps:

[0065] Start the air exhaust program; adjust the drive component 50 to control the adjustment component 40 to open the rear end of the receiving space 31; the main motor 10 drives the fan blade 20 to rotate, causing air to flow from the front end of the receiving space 31 to the rear end of the receiving space 31.

[0066] Start the air circulation program; adjust the drive component 50 to control the adjustment component 40 to close the rear end of the receiving space 31 and open the second port 322 of the inner air duct 32; the main motor 10 drives the fan blade 20 to rotate, causing air to flow from the front end of the receiving space 31 through the inner air duct 32 to the first port 321, or causing air to flow from the first port 321 through the inner air duct 32 to the front end of the receiving space 31.

[0067] Start the air integration program; adjust the drive component 50 to control the adjustment component 40 to open the rear end of the accommodating space 31 and open the second port 322 of the inner air duct 32; the main motor 10 drives the fan blade 20 to rotate, causing air to flow from the front end of the accommodating space 31 to the rear end of the accommodating space 31, and at the same time causing air to flow from the front end of the accommodating space 31 through the inner air duct 32 to the first port 321.

[0068] The above embodiments are not an exhaustive list based on the present invention, and there may be many other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. An adjustable exhaust fan, characterized in that, The adjustable exhaust fan comprises a main motor, a fan blade, a supporting shell, an adjusting assembly and an adjusting driving element. The fan blade is installed on an output shaft of the main motor. The supporting shell is provided with a containing space in the middle and an inner air duct on the side, the front end and the rear end of the containing space are communicated with the outside, the main motor is installed in the containing space, the inner air duct comprises a first port and a second port, the first port is communicated with the outside on the side of the front end of the containing space, and the second port is communicated with the containing space. The supporting shell is provided with a rectangular frame, and the first port of the inner air duct is arranged on the frame. The adjusting assembly is installed at the rear end of the containing space, the adjusting driving element drives the adjusting assembly to move, so that the adjusting assembly moves between closing the rear end of the containing space and closing the second port of the inner air duct. The adjusting assembly comprises a baffle and a driving element, the baffle is rotatably installed at the rear end of the containing space, and the driving element drives the baffle to move between closing the rear end of the containing space and closing the second port of the inner air duct. The second port is arranged close to the rear end of the containing space, and the baffle is inwardly turned to close the second port.

2. The adjustable exhaust fan of claim 1, wherein, The driving element comprises a first connecting rod and a second connecting rod, one end of the second connecting rod is rotatably connected to the first connecting rod, and the other end of the second connecting rod is rotatably connected to the baffle, the adjusting driving element drives the first connecting rod to move, so that the second connecting rod drives the baffle to rotate.

3. The adjustable exhaust fan of claim 2, wherein, When the baffle is turned to close the second port, an acute angle is formed between the second connecting rod and the baffle.

4. The adjustable exhaust fan of claim 2, wherein, When the baffle is turned to close the second port, an avoiding gap is formed between the first connecting rod and the baffle, and the size of the avoiding gap is greater than the thickness of the baffle.

5. The adjustable exhaust fan of any one of claims 1 to 4, wherein, The adjusting driving element comprises an adjusting motor and a first matching element, the first matching element is installed on an output shaft of the adjusting motor, the adjusting assembly comprises a second matching element, the first matching element is matched with the second matching element, the adjusting motor drives the first matching element to rotate, and then drives the second matching element to move linearly on the first matching element.

6. The adjustable exhaust fan of any one of claims 1 to 4, wherein, A guide baffle is arranged on the first port, and the guide baffle is opened when the first port discharges or intakes air.

7. The adjustable exhaust fan of any one of claims 1 to 4, wherein, The adjustable exhaust fan further comprises a PCT heater and a negative ion generator. The PCT heater is closer to the rear end of the containing space than the fan blade, and a negative ion electrode of the negative ion generator is installed at the front end of the containing space.

8. A method of adjustable exhaust, characterized by, The adjustable exhaust fan is used, and the steps comprise: starting an air exhaust program; controlling the adjusting assembly to open the rear end of the containing space by the adjusting driving element; driving the fan blade to rotate by the main motor, so that air flows from the front end of the containing space to the rear end of the containing space; starting an air circulation program; controlling the adjusting assembly to close the rear end of the containing space and open the second port of the inner air duct by the adjusting driving element; driving the fan blade to rotate by the main motor, so that air flows from the front end of the containing space to the first port through the inner air duct, or air flows from the first port to the front end of the containing space through the inner air duct; starting an air comprehensive program; The adjusting driving member controls the adjusting assembly to open the rear end of the containing space and the second port of the inner air duct; The main motor drives the fan blade to rotate, and drives the air to flow from the front end of the containing space to the rear end of the containing space, and drives the air to flow from the front end of the containing space to the first port through the inner air duct.

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