CN217129869U - Large-torque fan and projector - Google Patents

Abstract

An embodiment of the utility model provides a big torsion fan and projecting apparatus relates to fan technical field. The large-torque fan comprises a centrifugal impeller and a motor, the centrifugal impeller is in transmission connection with an output shaft of the motor, the centrifugal impeller is provided with blades, and when the centrifugal impeller rotates, the blades can disturb the outer area of the centrifugal impeller so as to enable the outer area to form air flow, and the air flow flows to the centrifugal impeller from the central area of the air flow. The number of the centrifugal impellers of the large-torque fan provided by the application can be set according to the use scene, and can be one or more. Simultaneously, the big torsion fan that this application provided induced drafts the distance farther and the intake is bigger.

Description

Large-torque fan and projector

Technical Field

The utility model relates to a fan technical field particularly, relates to a big torsion fan and projecting apparatus.

Background

In order to prevent dust in the air from depositing on the optical elements, the conventional LCD projectors use a sealed space in which the LCD module and other optical elements are located to prevent air convection with the external environment. The screen chamber used for radiating the closed space of the cover has narrow and bent air channels due to limited space, and the circulating air channel is long, so that higher requirements are brought to the air pushing capacity of the radiating fan. Especially in the optical space of the LCD module, the efficiency of taking away the heat of the screen room by the air flow is low, and the high light output of the projector cannot be satisfied.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a big torsion fan and projecting apparatus, its heat dissipation that can realize longer wind channel.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides a big torque fan, big torque fan include centrifugal impeller and motor, centrifugal impeller with the output shaft transmission of motor is connected, centrifugal impeller has the blade when centrifugal impeller rotates, the blade can be right the vortex is carried out to centrifugal impeller outside region, in order to let outside region forms the package wind, makes the air current by the central zone flow direction of package wind centrifugal impeller.

In optional embodiment, centrifugal impeller still includes wheel hub, the quantity of blade includes a plurality ofly, and is a plurality of the blade is circumference interval set up in wheel hub, just the blade is in wheel hub's middle part encloses to close and forms the cavity district, adjacent two form the wind channel between the blade, the wind channel with cavity district intercommunication when centrifugal impeller rotates, the blade can be right centrifugal impeller outside region carries out the vortex, so that outside region forms the roll wind, makes the air current by the central zone flow direction of roll wind the cavity district, and by the wind channel flows out.

In an alternative embodiment, the motor is arranged outside the centrifugal impeller.

In an alternative embodiment, the motor is arranged in parallel with the centrifugal impeller.

In an alternative embodiment, the centrifugal impeller is mounted to an output shaft of the motor.

In an alternative embodiment, the centrifugal impeller diameter ranges from 0.6 to 1.4 motor diameters.

In an alternative embodiment, the number of the centrifugal impellers includes one, one centrifugal impeller being mounted at one end of an output shaft of the motor; alternatively, the first and second electrodes may be,

the number of the centrifugal impellers comprises two, the motor is provided with two output shafts, and the two centrifugal impellers are respectively arranged at two ends of the output shaft of the motor; alternatively, the first and second electrodes may be,

the number of the centrifugal impellers comprises three or more than three, and the three or more than three centrifugal impellers are arranged on the output shaft of the motor in parallel.

In an optional embodiment, the large torque fan further comprises a fixing bracket, the fixing bracket is arranged on the motor, and the fixing bracket is used for fixing the large torque fan.

In an optional embodiment, the large-torque fan further includes a housing, the housing has an accommodating space, and an air inlet and an air outlet communicated with the accommodating space, the centrifugal impeller is disposed in the accommodating space, and at least a portion of the blades extends into the air inlet.

In a second aspect, the present invention provides a projector. The projector comprises the large torsion fan in any one of the above embodiments, and the large torsion fan is used for heat dissipation of the projector.

The embodiment of the utility model provides a beneficial effect of big torsion fan and projecting apparatus that general case provided includes:

the application provides a big torque fan's centrifugal impeller blade can carry out the vortex to centrifugal impeller outside region under the motor drives pivoted condition to let outside region form the roll wind, make the air current by the central zone flow direction centrifugal impeller of roll wind, because the central zone of roll wind can form the negative pressure runner, thereby the air current flows into the air intake by the negative pressure runner and can let the farther and intake of the farther of induced draft distance of big torque fan bigger.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a large-torque fan according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating a flow direction of wind of the high-torque fan according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a high torque fan provided by an embodiment of the present invention, which includes two centrifugal impellers;

fig. 4 is a schematic structural view of a large-torque fan provided in an embodiment of the present invention;

fig. 5 is a schematic structural view illustrating that the housing of the large torque fan provided by the embodiment of the present invention has two air outlets.

The icon is 100-large torque fan; 110-a housing; 111-an accommodating space; 113-an air inlet; 115-an air outlet; 130-a centrifugal impeller; 131-a blade; 132-a hub; 133-void region; 135-air duct; 150-a motor; 170-fixing the bracket.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

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, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, an embodiment of the present invention provides a projector, which is provided with a large torque fan 100 for heat dissipation, and the large torque fan 100 can dissipate heat for an LCD module and a light source at the same time, and also can dissipate heat for one of the LCD module and the light source or other heat generating components of the projector.

Of course, in other embodiments of the present application, the high torque fan 100 may also dissipate heat from other devices, such as household appliances or industrial devices.

Referring to fig. 1 and 2, in the present embodiment, the high torque fan 100 includes a centrifugal impeller 130 and a motor 150. The centrifugal impeller 130 is connected to an output shaft of the motor 150 in a driving manner, the centrifugal impeller 130 has blades 131, and when the centrifugal impeller 130 rotates, the blades 131 disturb the outer region of the centrifugal impeller 130 to form a wind, so that the outer region forms a wind flow, and the wind flow flows from the central region of the wind flow to the centrifugal impeller 130.

The centrifugal impeller 130 of the large torque fan 100 provided in this embodiment can disturb the flow of the air in the outer region of the centrifugal impeller 130 by the blades 131 when the motor 150 drives the centrifugal impeller 130 to rotate, so that the outer region forms the air flow, and the air flow flows from the central region of the air flow to the centrifugal impeller 130.

In this embodiment, the centrifugal impeller 130 further includes a hub 132, the number of the blades 131 includes a plurality of blades 131, the plurality of blades 131 are circumferentially disposed on the hub 132 at intervals, and the blades 131 surround the middle portion of the hub 132 to form a hollow area 133, an air duct 135 is formed between two adjacent blades 131, the air duct 135 is communicated with the hollow area 133, when the centrifugal impeller 130 rotates, the blades 131 can disturb the outer area of the centrifugal impeller 130, so that the outer area forms a wind, and the air flow flows from the central area of the wind to the hollow area 133 and flows out from the air duct 135.

When the centrifugal impeller 130 in this embodiment rotates, the blades 131 may disturb flow in an outer region except the end face of the centrifugal impeller 130, so that the outer region except the end face of the centrifugal impeller 130 forms a windup, the windup is similar to a tropical storm, the blades 131 may form a windwall rotating at a high speed in the outer portion in the rotation process of the blades 131, a negative pressure flow channel with the cavity region 133 may be formed in a central region of the windwall due to the centrifugal reason, the negative pressure flow channel is similar to a "wind eye" of the tropical storm, so that more distant wind may be sucked into the centrifugal impeller 130, and due to the effect of the outer windup, the negative pressure may be enhanced, so that the intake air amount may be increased.

And as can be seen from fig. 2, when the large torque fan 100 is operated, air is sucked from the top end of the centrifugal impeller 130, since the hollow area 133 is formed in the center of the air inlet surface of the centrifugal impeller 130, and all the blades 131 (top ends) participate in the rotational agitation of the sucked air. In an upper region farther from the suction surface of the end surface of the centrifugal impeller 130, air starts to rotate with acceleration centering on the hollow region 133 and goes down, and then is sucked into the centrifugal impeller 130 in a manner similar to a tropical storm "tornado" and is thrown outward from the circumference of the centrifugal impeller 130 by the acceleration of the blades 131. I.e., the sucked air is accelerated and forms a high negative pressure suction hollow area 133 before it enters the centrifugal impeller 130. The suction force is the strongest at the hollow area 133, and a large amount of air is rotated and sucked at the upper end area of the blade 131 outside the hollow area 133. Although decreasing with increasing distance from the central axis, the area is large and the total amount of air sucked is large.

Referring to fig. 1 to 5, in the present embodiment, the motor 150 is disposed outside the centrifugal impeller 130. The motor 150 is disposed in parallel with the centrifugal impeller 130, and the centrifugal impeller 130 is mounted on an output shaft of the motor 150. The motor 150 is disposed outside the housing 110, so that the centrifugal impeller 130 and the motor 150 are not in the same plane, and thus the diameter of the large torque fan 100 can be smaller, which is beneficial to the miniaturization design of the large torque fan 100, and the large torque fan 100 can be more conveniently mounted in a narrow and long area.

Direct current fans on the market today mainly include split axial flow fans, vortex fans, drum fans. Axial flow fans are used less because of low pressure of air suction and air outlet, large air surface and lack of beam current. The roller fan is designed with a large volume, the air duct 135 is long in structure, and air noise generated by radial air intake is too large and is almost rarely adopted. The vortex fan has many advantages compared to the axial flow and the drum fan and is widely used. However, through comparative analysis, the rotors of the existing vortex fans with several specifications have three common characteristics: as the power of the motor 150 increases (the diameter and height of the motor 150), the diameter of the centrifugal impeller 130 also increases and is much larger than the structural diameter of the motor 150, and the size (the contact surface with air) of the blades 131 on the centrifugal impeller 130 is related to the diameter of the centrifugal impeller 130, so as to reduce the consumption of the force of the motor 150 due to the overlong resistance arm; as the diameter of the centrifugal impeller 130 increases, the number of blades 131 also increases in order to generate a uniform wind output.

It should be noted that, let D be the distance from the central axis of the motor 150 to the edge of the centrifugal impeller 130, D be the resistance arm driving the impeller to rotate, and for simplicity of analysis, let D be the output axis of the motor 150, and at this time, the torque T output from the central axis to the centrifugal impeller 130 is F × D. F is the force output by the central rotating shaft, and we refer to it as "torque". The torque force F is a rotational force output by the motor 150 under the structure of the centrifugal impeller 130 with a certain power, and the "torque" is an expression of the capability of the motor 150 to do work. When the motor 150 is 3016, the radius D of the impeller of the existing product is 40mm, and the radius D of the rotor cover of the motor 150 is 22mm, T, F, D, F, 40F; (Kg-m). The above T is an ideal value, and is an expression of the capability of doing work under the physical structure of the fan motor 150 and the impeller. This index becomes a constant value due to the power of the selected motor 150, and actually, in addition to the air resistance received by the blades 131 when the impeller rotates, the resistance caused by the distance (resistance arm) between the blades 131 on the impeller and the central rotating shaft, the mass distribution of the impeller itself, and the like affects the efficiency of the motor 150 in pushing air to do work, and is mainly expressed as the pressure shortage of air suction and air outlet. In order to improve the pressure of inlet and outlet air, the F in the above formula is released as much as possible through the novel structural design of the impeller, so that the key for solving the problem is realized. In the embodiment, the motor 150 is disposed outside the centrifugal impeller 130, and the centrifugal impeller 130 is mounted on the output shaft of the motor 150 in parallel, so that the length of the blades 131 is longer under the condition that the diameter of the centrifugal impeller 130 is not changed, and the air suction amount of the centrifugal impeller 130 is increased.

In this embodiment, the diameter of the centrifugal impeller 130 ranges from 0.6 to 1.4 times the diameter of the motor 150.

In the present embodiment, the diameter of the motor 150 may be 23mm, which is defined by T1 ═ F1 ═ d1 ═ F1 ═ 23F 1; f1 is the force output by the motor 150 in the high torque fan 100; since the same type of motor 150 is used, the following settings are set: T-T1, F-D-F1-D1 gave 40F-23F 1, and F1-40/23F-1.74F. Therefore, compared with the conventional blower, the large torque blower 100 provided by the present embodiment has the following advantages: F1/F is 1.74, i.e., F1 is 1.74 times F, which does not include the lifting of F1 by forces due to variations in mass distribution, resistance arms, etc. as the new impeller diameter is reduced. Through analysis of related design software, on two different fan impellers, factors such as an equivalent mass arc (mass resistance arm) formed by the blades 131 on the impeller, the number of the blades 131, the equivalent resistance arm for pushing air by the blades 131 and the like are considered, and the actual value of F1 is more than 3 times of the value of F. That is, the fan provided in this embodiment improves the output torque of the motor 150 by more than 3 times compared with the conventional fan.

However, in the existing popular axial flow and vortex flow fans, because the blades of the impeller and the large-volume motor 150 are in the same plane, the motor 150 at the center blocks the formation of the wind eye, and in addition, the torque force of the impeller and the area of the blades 131 are too small, and the high suction negative pressure of the rotating wind eye cannot be formed.

In some embodiments of the present application, the number of the centrifugal impellers 130 includes one, and one centrifugal impeller 130 is installed at one end of the output shaft of the motor 150.

In other embodiments of the present application, the number of the centrifugal impellers 130 includes two, the motor 150 has two output shafts, and two impellers are respectively mounted at both ends of the output shaft of the motor 150.

In some other embodiments of the present application, the number of the centrifugal impellers 130 may also include three or more centrifugal impellers 130, and the three or more centrifugal impellers 130 are disposed in parallel on the output shaft of the motor 150.

In this embodiment, the large torque fan 100 further includes a fixing bracket 170, the fixing bracket 170 is disposed on the motor 150, and the fixing bracket 170 is used for fixing the large torque fan 100.

In this embodiment, the fixing bracket 170 is provided with a fixing portion, and the fixing portion is provided with a fixing hole, so that when the large-torque fan 100 is fixed, the fastening member can be conveniently inserted into the fixing hole to fix the large-torque fan 100.

In this embodiment, the large torque fan 100 further includes a housing 110, the housing 110 has an accommodating space 111, and an air inlet 113 and an air outlet 115 communicated with the accommodating space 111, the centrifugal impeller 130 is disposed in the accommodating space 111, and at least a portion of the blade 131 extends into the air inlet 113. The present embodiment can achieve better wind-bunching and rectification by providing the outer shell 110.

It should be noted that the present embodiment does not limit the specific shape of the casing 110, as long as the blades 131 of the centrifugal impeller 130 leak out of the air inlet 113.

It should be further noted that, in the embodiment, at least a portion of the vane 131 extends into the air inlet 113, the vane 131 may be located in the accommodating space 111 entirely in the radial direction, but a portion of the structure of the vane 131 is seen directly at the side of the air inlet 113 of the outer casing 110 or the vane 131 is exposed in the air inlet 113 entirely, or the vane 131 may extend from the air inlet 113 to the outer side of the outer casing 110, and is not limited only that the vane 131 extends from the air inlet 113 to the outer side of the outer casing 110. Therefore, the extension may be radial extension into the air inlet 113, or may be axial extension into the air inlet 113 while extending radially into the air inlet 113. Whether or not to protrude from the housing 110 may be set as the case may be.

In the present embodiment, the diameter of the intake opening 113 is equal to the diameter of the centrifugal impeller 130, so that the plurality of blades 131 are all completely exposed to the intake opening 113.

Of course, in other embodiments of the present application, a part of the blades 131 near the hollow area 133 may leak out of the intake opening 113, or a part of the blades 131 near the hollow area 133 may leak out of the intake opening 113. In the case that the partial blades 131 leak out of the air inlet 113 at the side close to the hollow area 133, the centrifugal impeller needs to operate at a high speed, and the blades may be arranged at equal intervals to ensure the conservation of angular momentum of the impeller.

In some embodiments of the present application, in order to make the blades 131 more turbulent to the outside of the outer casing 110, the blades 131 radially extending into the air inlet 113 may also at least partially extend out of the outer casing 110 from the axial direction of the air inlet 113. That is, a portion of the blade 131 is located in the accommodating space 111, and another portion extends from the air inlet 113 toward the outside of the outer shell 110 so as to protrude outside the outer shell 110, so as to improve the disturbance effect of the external air flow, and make it easier to form the air blast.

To sum up, the utility model discloses the beneficial effect of theory of operation includes:

the centrifugal impeller 130 of the large torque fan 100 provided in this embodiment can disturb the flow of the air in the outer region of the centrifugal impeller 130 by the blades 131 when the motor 150 drives the centrifugal impeller 130 to rotate, so that the outer region forms the air flow, and the air flow flows from the central region of the air flow to the centrifugal impeller 130.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a big torsion fan, its characterized in that includes centrifugal impeller and motor, centrifugal impeller with the output shaft transmission of motor is connected, centrifugal impeller has the blade when centrifugal impeller rotates, the blade can be right the outer region of centrifugal impeller carries out the vortex, so that the outer region forms the roll wind, makes the air current by the central zone flow direction of roll wind centrifugal impeller.

2. The large torque fan according to claim 1, wherein the centrifugal impeller further includes a hub, the number of the blades includes a plurality of blades, the plurality of blades are circumferentially arranged at intervals on the hub, a hollow area is formed in the middle of the hub by enclosing the blades, an air duct is formed between two adjacent blades, the air duct is communicated with the hollow area, when the centrifugal impeller rotates, the blades can disturb the outer area of the centrifugal impeller to enable the outer area to form a wind, and an air flow flows from the central area of the wind to the hollow area and flows out from the air duct.

3. The high torque fan according to claim 1, wherein the motor is disposed outside the centrifugal impeller.

4. The high torque fan of claim 3, wherein the motor is disposed in parallel with the centrifugal impeller.

5. The high torque fan of any one of claims 1-4, wherein the centrifugal impeller is mounted to an output shaft of the motor.

6. The high torque fan according to any one of claims 1-4, wherein the diameter of the centrifugal impeller ranges from 0.6 to 1.4 motor diameters.

7. The high torque fan according to any one of claims 1 to 4, wherein the number of the centrifugal impellers includes one, and one centrifugal impeller is installed at one end of an output shaft of the motor; alternatively, the first and second electrodes may be,

the number of the centrifugal impellers comprises two, the motor is provided with two output shafts, and the two impellers are respectively arranged at two ends of the output shaft of the motor; alternatively, the first and second electrodes may be,

the number of the centrifugal impellers comprises three or more than three, and the three or more than three centrifugal impellers are arranged on the output shaft of the motor in parallel.

8. The large torque fan according to any one of claims 1 to 4, further comprising a fixing bracket, wherein the fixing bracket is disposed on the motor, and the fixing bracket is used for fixing the large torque fan.

9. The large torque fan according to any one of claims 1 to 4, further comprising a housing, wherein the housing has an accommodating space, and an air inlet and an air outlet communicated with the accommodating space, the centrifugal impeller is disposed in the accommodating space, and the blades at least partially extend into the air inlet.

10. A projector comprising a large torque fan as claimed in any one of claims 1 to 9, the large torque fan being used for heat dissipation of the projector.

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