High-energy-efficiency cross-flow fan

Abstract

A high-energy-efficiency cross-flow fan comprises a fan support, the fan support is provided with a wind wheel, a driving motor used for driving the wind wheel to rotate and a power connection assembly electrically connected with an external power source and the driving motor, and the fan support is further provided with a wiring board used for enabling the power connection assembly to be fixedly arranged on the fan support. The wiring board comprises a first end part and a second end part which are connected with each other, the first end part extends in the length direction of the fan support so that the wiring board can be fixedly arranged on the fan support, and the second end part extends in the side direction of the fan support so that the power connection assembly can be fixedly arranged on the wiring board. The utility model provides a high-energy-efficiency cross-flow fan which can improve the installation application effect of the cross-flow fan in a household appliance and improve the universality of the cross-flow fan.

Description

Technical Field

[0001] The utility model belongs to the technical field of cross-flow fans, and particularly relates to a high-efficiency cross-flow fan. Background Art

[0002] The cross-flow fan, also known as a transverse flow fan, is widely used in the fields of household appliances, such as household appliances like heaters, smokeless ovens, smokeless barbecue grills, and smokeless baking trays. After the air is heated, the cross-flow fan drives the hot air to flow, so that the hot air evenly circulates inside the smokeless baking tray and heats the bottom surface of the cooking part of the smokeless baking tray. The cross-flow fan is usually located at the back of the smokeless baking tray and has a powerful fan, which can generate a strong air flow and blow the hot air to all corners inside the smokeless baking tray.

[0003] A conventional cross-flow fan includes a fan housing, a cross-flow impeller, a motor, and a power connection component, etc. The cross-flow impeller and the motor are arranged on the fan housing. The motor drives the cross-flow impeller to rotate. The power connection component is installed on the fan housing through a power connection bracket, etc., and is electrically connected to an external power supply to provide energy for the motor. The power connection bracket is arranged at the left end and / or the right end of the fan housing and extends along the length direction of the fan housing. The problem is that the internal structures of different household appliances are different. When the cross-flow fan is installed, due to the structural characteristics of the wiring bracket, the cross-flow fan occupies more space in the length direction and can only be installed inside household appliances with a long-shaped structure. For household appliances with a non-long-shaped structure, cross-flow fans with different lengths need to be developed separately, which makes the cross-flow fan have certain installation limitations, resulting in poor versatility of the cross-flow fan and increasing the product development cost.

[0004] Therefore, further improvement is needed. Summary of the Utility Model

[0005] An object of the utility model is to at least overcome one of the deficiencies existing in the above-mentioned prior art, and to provide a high-efficiency cross-flow fan, which can improve the installation applicability effect of the cross-flow fan inside household appliances and improve the versatility of the cross-flow fan.

[0006] To achieve the above object, the technical solution provided by the embodiment of the utility model is:

[0007] A high-efficiency cross-flow fan includes a fan bracket, on which there are provided a wind wheel, a driving motor for driving the wind wheel to rotate, and a power connection component that is electrically connected to an external power supply and the driving motor respectively. The fan bracket is also provided with a wiring board for fixing the power connection component on the fan bracket. The wiring board includes a first end and a second end connected to each other. The first end extends along the length direction of the fan bracket for fixing the wiring board on the fan bracket, and the second end extends along the side direction of the fan bracket for fixing the power connection component on the wiring board.

[0008] The vertical projection of the wiring board is L-shaped, and the wiring board is arranged at the left end and / or the right end of the fan bracket.

[0009] Reinforcing ribs are provided on the wiring board. The reinforcing ribs are arranged on the plane of the wiring board and are recessed downward from the plane of the wiring board. The vertical projection of the reinforcing ribs is L-shaped.

[0010] A wire component is also provided on the fan bracket. The wire component is arranged between the drive motor and the power connection component. A wire fixing part for fixing the wire component to the wiring board is also provided on the wiring board. The wire fixing part is arranged on the bottom surface of the wiring board.

[0011] The power connection component includes an electric induction component and an insulating component. There are two groups of electric induction components, which are arranged at intervals along the length direction of the insulating component and are respectively electrically connected to an external power supply and a drive motor. The insulating component is arranged on the wiring board for fixing the power connection component on the wiring board.

[0012] An installation structure is provided between the wiring board and the insulating component to fix the insulating component on the wiring board. The installation structure includes a first installation hole provided on the wiring board, a second installation hole provided on the insulating component and corresponding to the first installation hole, and a fastening component that cooperates with the first installation hole and / or the second installation hole. The first installation holes and the second installation holes are several and are arranged at intervals along the extending direction of the second end of the wiring board.

[0013] A positioning structure is provided between the wiring board and the insulating component to position the insulating component on the wiring board. The positioning structure includes a positioning concave part provided on the wiring board and a positioning convex platform provided on the insulating component and corresponding to the positioning concave part. The positioning concave part is arranged on the edge of the second end away from the first end, and the positioning convex platform is arranged on the top surface of the insulating component.

[0014] The fan bracket includes an air inlet, an air outlet, a bracket cross bar, a bracket bottom plate, a first tail plate, and a second tail plate. The bracket cross bar and the bracket bottom plate are oppositely arranged at the upper and lower ends of the fan bracket. The first tail plate and the second tail plate are oppositely arranged at the left and right ends of the fan bracket. The air inlet and the air outlet are oppositely arranged at the front and rear ends of the fan bracket and are jointly formed by the bracket cross bar, the bracket bottom plate, the first tail plate, and the second tail plate. The areas of the air inlet and the air outlet are both larger than the horizontal projection area of the wind wheel.

[0015] The fan bracket further includes shock and noise reduction components for shock and noise reduction during the operation of the fan. The shock and noise reduction components are arranged on the first tail plate and / or the second tail plate. The shock and noise reduction components are provided with a first mounting portion, and the first mounting portion is arranged on the inner side wall of the shock and noise reduction components. The first tail plate is provided with a second mounting portion, and the second mounting portion is arranged on the side wall of the first tail plate. The second tail plate is provided with a third mounting portion, and the third mounting portion is arranged on the side wall of the second tail plate. The first mounting portion and the second mounting portion cooperate with each other to fix the shock and noise reduction components on the first tail plate, and the first mounting portion and the third mounting portion cooperate with each other to fix the shock and noise reduction components on the second tail plate.

[0016] The wind wheel is provided with a rotating shaft for the wind wheel to be rotatably arranged on the fan bracket. The rotating shaft is arranged at the left end and / or the right end of the wind wheel. The fan bracket is provided with a rolling bearing for the relative rotation of the rotating shaft and the fan bracket, and a shock reduction component for reducing the vibration of the rotating shaft during the operation of the fan. The rolling bearing is located between the first tail plate and the rotating shaft, and / or between the second tail plate and the rotating shaft. The shock reduction component is sleeved on the outer peripheral wall of the rolling bearing.

[0017] The beneficial effects of the present utility model are as follows:

[0018] By providing a wiring board on the fan bracket in the present utility model, the wiring board includes a first end portion and a second end portion. The first end portion extends along the length direction of the fan bracket, and the second end portion extends along the side direction of the fan bracket, reducing the space occupied by the cross-flow fan in the length direction, enabling the cross-flow fan to be applicable to more household appliances with different shapes, improving the installation applicability of the cross-flow fan inside household appliances, enhancing the versatility of the cross-flow fan, and reducing the product development cost. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a high-efficiency cross-flow fan according to an embodiment of the present utility model.

[0020] Figure 2 It is a schematic structural diagram of a wiring board according to an embodiment of the present utility model.

[0021] Figure 3 It is a schematic structural diagram of a wiring board according to an embodiment of the present utility model.

[0022] Figure 4 It is a top view of a wiring board according to an embodiment of the present utility model.

[0023] Figure 5 It is an exploded view of a power connection component installed on a wiring board according to an embodiment of the present utility model.

[0024] Figure 6 It is an exploded view of a high-efficiency cross-flow fan according to an embodiment of the present utility model. Detailed implementation mode

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model.

[0026] See Figure 1-6 , this high-efficiency cross-flow fan includes a fan bracket 1, on which there are provided a wind wheel 2, a driving motor 3, a power connection component 4, and a wiring board 5. The wind wheel 2 is preferably multi-bladed, long cylindrical and has forward multi-wing blades. The driving motor 3 is arranged at the right end of the fan bracket 1, and its output shaft is in transmission connection with the wind wheel 2. The power connection component 4 is fixedly installed on the fan bracket 1 through the wiring board 5 and is electrically connected to an external power supply and the driving motor 3 respectively. The wiring board 5 includes a first end 501 and a second end 502 connected to each other. The first end 501 and the second end 502 are integrally formed. The first end 501 is for the wiring board 5 to be fixedly installed on the fan bracket 1, and it extends along the length direction of the fan bracket 1. The second end 502 is for the power connection component 4 to be fixedly arranged on the wiring board 5, and it extends along the side direction of the fan bracket 1. In this embodiment, the vertical projection of the wiring board 5 is L-shaped and is integrally formed with the fan bracket 1. The wiring board 5 is arranged at the right end of the fan bracket 1 and on the same side as the driving motor 3. The L-shaped wiring board 5 reduces the space it occupies in the length direction, thereby reducing the space occupied by the cross-flow fan in the length direction, enabling the cross-flow fan to be applicable to more household appliances with different shapes, improving the installation and applicability effect of the cross-flow fan inside household appliances, enhancing the versatility of the cross-flow fan, and reducing the product development cost.

[0027] Furthermore, the wiring board 5 is provided with a reinforcing rib 503. Specifically, in this embodiment, the reinforcing rib 503 is arranged on the plane of the wiring board 5 and is recessed downward from the plane of the wiring board 5. The vertical projection of the reinforcing rib 503 is L-shaped and is consistent with the shape of the wiring board 5. Through the above technical solutions, the mechanical structure strength of the wiring board 5 is improved, which can be understood by those skilled in the art.

[0028] Furthermore, a wire component is also provided on the fan bracket 1. Specifically, in this embodiment, the wire component is arranged between the drive motor 3 and the power connection component 4 and is electrically connected to the drive motor 3 and the power connection component 4 respectively to achieve the electrical connection between the drive motor 3 and the power connection component 4. A wire fixing portion 504 for fixing the wire component to the wiring board 5 is also provided on the wiring board 5. The wire fixing portion 504 is preferably a snap structure and is arranged on the bottom surface of the wiring board 5. Specifically, in this embodiment, the middle part of the plane of the wiring board 5 is bent by a stamping device, so that the plane of the stamped wiring board 5 is bent downward to form the wire fixing portion 504 to fix the wire component, avoiding the wire running phenomenon of the wire component when the cross-flow fan works. And only by inserting the wire component into the wire fixing portion 504 or pulling out the wire component from the wire fixing portion 504, the installation and disassembly of the wire component can be completed, which is convenient for people to install and disassemble the wire component on the wiring board 5, and those skilled in the art can understand it.

[0029] Furthermore, the power connection component 4 includes an electric induction component 401 and an insulating component 402. Specifically, in this embodiment, the number of the electric induction components 401 is two and they are arranged at intervals along the length direction of the insulating component 402. They are respectively electrically connected to the positive electrode of the external power supply, the positive electrode of the drive motor 3, the negative electrode of the external power supply, and the negative electrode of the drive motor 3. The electric induction component 401 is preferably an electrode post and is installed on the insulating component 402 by means of screws and nuts, etc. The insulating component 402 is preferably an insulating board and is detachably installed on the wiring board 5 for fixing the power connection component 4 on the wiring board 5. Through the above technical solutions, the insulating component 402 makes the electric induction component 401 and the wiring board 5 in insulating contact. When the electric induction component 401 is powered on, it avoids the wiring board 5 and the fan bracket 1 being charged simultaneously, improving the electrical insulation effect of the cross-flow motor, and those skilled in the art can understand it.

[0030] Furthermore, an installation structure is provided between the wiring board 5 and the insulating component 402. Specifically, in this embodiment, the installation structure includes a first installation hole 505 provided on the wiring board 5, a second installation hole 4021 provided on the insulating component 402 and corresponding to the first installation hole 505, and a fastening component that cooperates with the first installation hole 505 and / or the second installation hole 4021. The number of the first installation holes 505 is preferably two and they are arranged at intervals along the extending direction of the second end portion 502 of the wiring board 5. The number of the second installation holes 4021 is preferably two and they are arranged at intervals along the extending direction of the second end portion 502 of the wiring board 5. The fastening component is preferably a screw nut, a rivet, etc. When the insulating component 402 is installed on the wiring board 5, the first installation hole 505 corresponds to the second installation hole 4021, and the fastening component passes through the first installation hole 505 and the second installation hole 4021 and presses against the plane of the wiring board 5 and the plane of the insulating component 402 respectively, so that the insulating component 402 is fixed on the wiring board 5, and those skilled in the art can understand it.

[0031] Further, a positioning structure is provided between the wiring board 5 and the insulating member 402. Specifically, in this embodiment, the positioning structure includes a positioning recess 506 provided on the wiring board 5 and a positioning boss 4022 provided on the insulating member 402 and corresponding to the positioning recess 506. The positioning recess 506 is provided on the edge of the second end portion 502 away from the first end portion 501, that is, the positioning recess 506 is formed by the inward depression of the edge of the second end portion 502. The positioning boss 4022 is provided in the middle of the top surface of the insulating member 402, that is, the positioning boss 4022 extends upward from the top surface of the insulating member 402. When the insulating member 402 is installed on the wiring board 5, the positioning boss 4022 abuts against the edge of the positioning recess 506, so that the insulating member 402 is positioned on the wiring board 5, which can be understood by those skilled in the art.

[0032] Further, the fan bracket 1 includes an air inlet 101, an air outlet 102, a bracket cross bar 103, a bracket bottom plate 104, a first tail plate 105, and a second tail plate 106. Specifically, in this embodiment, the bracket cross bar 103 and the bracket bottom plate 104 are oppositely arranged at the upper and lower ends of the fan bracket 1, the first tail plate 105 and the second tail plate 106 are oppositely arranged at the left and right ends of the fan bracket 1, the second tail plate 106 is integrally formed with the wiring board 5, the air inlet 101 and the air outlet 102 are oppositely arranged at the front and rear ends of the fan bracket 1, the first tail plate 105 is respectively connected to the left ends of the bracket cross bar 103 and the bracket bottom plate 104 by means of buckles, etc., and the second tail plate 106 is respectively connected to the right ends of the bracket cross bar 103 and the bracket bottom plate 104 by means of buckles, etc. Under the combined action of the bracket cross bar 103, the bracket bottom plate 104, the first tail plate 105, and the second tail plate 106, an air inlet 101 is formed at the front end of the fan bracket 1, and an air outlet 102 is formed at the rear end of the fan bracket 1. The areas of the air inlet 101 and the air outlet 102 are both larger than the horizontal projection area of the impeller 2, that is, the length dimensions of the air inlet 101 and the air outlet 102 are both larger than the length dimension of the impeller 2, and the height dimensions of the air inlet 101 and the air outlet 102 are both larger than the diameter dimension of the impeller 2. Through the above technical solutions, the air inlet area of the air inlet 101 is increased, the air intake volume of the cross-flow fan is improved, the air outlet area of the air outlet 102 is increased, the air outlet volume of the cross-flow fan is improved, and thus the air transportation efficiency of the cross-flow fan is improved, which can be understood by those skilled in the art.

[0033] Furthermore, the fan bracket 1 further includes a shock and noise reduction component 6 for reducing shock and noise during the operation of the fan. Specifically, in this embodiment, the shock and noise reduction component 6 is preferably made of shock-absorbing materials such as rubber materials and silicone materials. It is sleeved on the outer peripheral wall of the first tail plate 105 and the outer peripheral wall of the second tail plate 106. Through the above technical solution, when the fan operates, it is avoided that the fan bracket 1 directly contacts and vibrates with the household appliance and makes abnormal noises, improving the shock and noise reduction effect of the cross-flow fan, which can be understood by those skilled in the art.

[0034] In this embodiment, the shock and noise reduction component 6 is provided with a first mounting portion 601. The first mounting portion 601 is preferably a convex bump and is integrally formed with the shock and noise reduction component 6. It is arranged on the inner side wall of the shock and noise reduction component 6. The first tail plate 105 is provided with a second mounting portion 1051. The second mounting portion 1051 is preferably a through hole and is arranged on the side wall of the first tail plate 105. The second tail plate 106 is provided with a third mounting portion 1061. The third mounting portion 1061 is preferably a through hole and the third mounting portion 1061 is arranged on the side wall of the second tail plate 106. When the first mounting portion 601 and the second mounting portion 1051 cooperate with each other, that is, when the convex bump of the shock and noise reduction component 6 extends into the through hole of the first tail plate 105, the shock and noise reduction component 6 is fixed on the first tail plate 105. When the first mounting portion 601 and the third mounting portion 1061 cooperate with each other, that is, when the convex bump of the shock and noise reduction component 6 extends into the through hole of the second tail plate 106, the shock and noise reduction component 6 is fixed on the second tail plate 106, which can be understood by those skilled in the art.

[0035] Furthermore, the wind wheel 2 is provided with a rotating shaft 201 for rotatably arranging the wind wheel 2 on the fan bracket 1. Specifically, in this embodiment, the rotating shaft 201 is preferably arranged at the left end of the wind wheel 2. The fan bracket 1 is provided with a rolling bearing 7 and a shock-absorbing component 8. The rolling bearing 7 is arranged on the first tail plate 105 of the fan bracket 1 and is sleeved on the outer peripheral wall of the rotating shaft 201 and is located between the first tail plate 105 of the fan bracket 1 and the rotating shaft 201, making the rotating shaft 201 rotate more smoothly relative to the fan bracket 1. The shock-absorbing component 8 is preferably made of rubber materials or silicone materials. It is sleeved on the outer peripheral wall of the rolling bearing 7 and is embedded in the through hole of the first tail plate 105 of the fan bracket 1 and is located between the fan bracket 1 and the rolling bearing 7, enabling the shock-absorbing component 8 to reduce the vibration generated when the rotating shaft 201 rotates during the operation of the fan, which can be understood by those skilled in the art.

[0036] The above is the preferred solution of the present utility model, which shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency crossflow fan, comprising a fan support (1), the fan support (1) being provided with a wind wheel (2), a drive motor (3) for driving the wind wheel (2) to rotate, and a power connection component (4) electrically connected to an external power source and the drive motor (3), respectively, characterized in that: The fan bracket (1) is also provided with a wiring board (5) for fixing the power connection component (4) on the fan bracket (1); the wiring board (5) comprises a first end (501) and a second end (502) connected to each other; the first end (501) is extended along the length direction of the fan bracket (1) for fixing the wiring board (5) on the fan bracket (1); and the second end (502) is extended along the side direction of the fan bracket (1) for fixing the power connection component (4) on the wiring board (5).

2. The high-efficiency crossflow fan according to claim 1, characterized in that: The vertical projection of the wiring board (5) is L-shaped, and the wiring board (5) is arranged at the left end and / or the right end of the fan bracket (1).

3. The high energy efficiency crossflow fan according to claim 2, characterized in that: The wiring board (5) is provided with a reinforcing rib (503), the reinforcing rib (503) being arranged on the plane of the wiring board (5) and recessed downward from the plane of the wiring board (5), and the vertical projection of the reinforcing rib (503) is L-shaped.

4. The high energy efficiency crossflow fan according to claim 1, characterized in that: The fan bracket (1) is also provided with a wire component, the wire component is arranged between the drive motor (3) and the power connection assembly (4), and the terminal block (5) is also provided with a wire fixing portion (504) for fixing the wire component to the terminal block (5), the wire fixing portion (504) being arranged on the bottom surface of the terminal block (5).

5. The high energy efficiency crossflow fan according to claim 1, characterized in that: The power connection component (4) comprises an inductive component (401) and an insulating component (402); the inductive components (401) are in two groups and are arranged at intervals along the length direction of the insulating component (402) and are electrically connected to an external power source and a drive motor (3) respectively; the insulating component (402) is arranged on a wiring board (5) to fix the power connection component (4) on the wiring board (5).

6. The high energy efficiency crossflow fan according to claim 5, characterized in that: A mounting structure is provided between the terminal block (5) and the insulating component (402) so that the insulating component (402) is fixedly mounted on the terminal block (5); the mounting structure comprises a first mounting hole (505) provided on the terminal block (5), a second mounting hole (4021) provided on the insulating component (402) and corresponding to the first mounting hole (505), and a fastening component that cooperates with the first mounting hole (505) and / or the second mounting hole (4021); the first mounting hole (505) and the second mounting hole (4021) are multiple and are arranged at intervals along the extension direction of the second end portion (502) of the terminal block (5).

7. The high energy efficiency crossflow fan according to claim 5, characterized in that: A positioning structure is provided between the terminal block (5) and the insulating component (402) so that the insulating component (402) is positioned on the terminal block (5), the positioning structure comprising a positioning recess (506) provided on the terminal block (5), and a positioning boss (4022) provided on the insulating component (402) and corresponding to the positioning recess (506), the positioning recess (506) being provided on an edge of the second end portion (502) away from the first end portion (501), and the positioning boss (4022) being provided on a top surface of the insulating component (402).

8. The high energy efficiency crossflow fan according to any one of claims 1 to 7, characterized in that: The fan support (1) comprises an air inlet (101), an air outlet (102), a support cross bar (103), a support bottom plate (104), a first tail plate (105), and a second tail plate (106); the support cross bar (103) and the support bottom plate (104) are arranged at the upper and lower ends of the fan support (1) in a relative manner; the first tail plate (105) and the second tail plate (106) are arranged at the left and right ends of the fan support (1) in a relative manner; the air inlet (101) and the air outlet (102) are arranged at the front and rear ends of the fan support (1) in a relative manner and are composed of the support cross bar (103), the support bottom plate (104), the first tail plate (105), and the second tail plate (106); and the areas of the air inlet (101) and the air outlet (102) are both larger than the horizontal projection area of ​​the wind wheel (2).

9. The high-efficiency crossflow fan according to claim 8, characterized in that: The high-efficiency crossflow fan further comprises a vibration-reducing and noise-reducing component (6) for reducing vibration and noise when the fan is running, the vibration-reducing and noise-reducing component (6) being arranged on the first tail plate (105) and / or the second tail plate (106), the vibration-reducing and noise-reducing component (6) being provided with a first mounting portion (601), the first mounting portion (601) being arranged on the inner side wall of the vibration-reducing and noise-reducing component (6), the first tail plate (105) being provided with a second mounting portion (1051), the second mounting portion (1051) being arranged on the first tail plate The first mounting portion (601) and the second mounting portion (1051) cooperate with each other so that the shock-absorbing and noise-reducing component (6) is fixedly mounted on the first tail plate (105); the first mounting portion (601) and the third mounting portion (1061) cooperate with each other so that the shock-absorbing and noise-reducing component (6) is fixedly mounted on the second tail plate (106).

10. The high energy efficiency crossflow fan according to claim 8, characterized in that: The wind wheel (2) is provided with a rotating shaft (201) arranged on the fan support (1) for rotating the wind wheel (2); the rotating shaft (201) is arranged at the left end and / or the right end of the wind wheel (2); the fan support (1) is provided with a rolling bearing (7) for enabling the rotating shaft (201) and the fan support (1) to rotate relative to each other, and a shock absorbing component (8) for reducing vibration of the rotating shaft (201) when the fan is running; the rolling bearing (7) is located between the first tail plate (105) and the rotating shaft (201), and / or between the second tail plate (106) and the rotating shaft (201); and the shock absorbing component (8) is sleeved on the outer peripheral wall of the rolling bearing (7).

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