Angle-adjustable blades and fans

Abstract

The present invention provides an angle-adjustable blade and a fan. When the fan has different rotation speeds or air volume requirements, the efficiency will not decrease due to a fixed installation angle of the blade, so that the fan can maintain high efficiency within a wider rotation speed range. The angle-adjustable blade comprises a blade and a fixing flange for fixing the blade; a connecting plate is fixedly connected to the fixing flange, and also comprises a first rotating motor and a second rotating motor, the first rotating motor is connected to a blade mounting seat, and a rotating outer cover is fixedly connected to the rotating shaft of the first rotating motor; the second rotating motor is fixed to the rotating outer cover and can be driven to rotate by the rotating outer cover of the first rotating motor, the rotating shaft on the second rotating motor is fixedly connected to the connecting plate and drives the fixing flange to deflect horizontally, and the fan comprises a blade seat, and at least two angle-adjustable blades as described in any one of claims 1 to 6 are symmetrically installed on the blade mounting seat.

Description

Technical Field

[0001] The invention relates to the technical field of fans, and in particular to a blade with adjustable angle and a fan. Background Art

[0002] my country's pig farming industry is gradually developing from the traditional free-range model to the large-scale farming model of closed pig houses. In the large-scale farming model of closed pig houses, the pig houses are well sealed and the pigs are raised at a high density, which causes harmful gases such as ammonia, hydrogen sulfide and carbon monoxide produced by pigs during their growth to be spread in the pig houses. If pigs are in an environment with excessively high concentrations of harmful gases for a long time, it will cause great harm to their health. Appropriate ventilation not only plays a very important role in the exchange of air and substances in the house, but also can eliminate waste heat, relieve heat stress, regulate temperature and humidity, improve air quality, maintain the normal metabolism of pigs to improve productivity and pork quality. At present, ventilation and air exchange in pig houses are mainly achieved by installing axial flow fans, which have become one of the key equipment in the ventilation system of pig houses. However, due to different climatic conditions, different pig houses, different feeding conditions, and different types of pigs, the ventilation requirements are different. Therefore, it is of great significance to ensure that the axial flow fan can maintain a high working efficiency under different ventilation conditions. For this reason, the technology is very necessary to have an automatic adjustable blade installation angle device to keep the axial flow fan working efficiently within a wider speed range. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, meet actual needs, and provide a blade and fan with adjustable angle. The fan of this design will not cause a decrease in efficiency due to a fixed installation angle of the blade when different speeds or air volumes are required, so that the fan can maintain high efficiency within a wider speed range.

[0004] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is:

[0005] Disclosed is an angle-adjustable blade, comprising a blade and a fixing flange for fixing the blade; a connecting plate is fixedly connected to the fixing flange, and further comprising a first rotating motor and a second rotating motor, wherein the first rotating motor is connected to a blade mounting seat, and a rotating outer cover is fixedly connected to the rotating shaft of the first rotating motor; the second rotating motor is fixed to the rotating outer cover and can be driven to rotate by the rotating outer cover of the first rotating motor, and the rotating shaft on the second rotating motor is fixedly connected to the connecting plate and drives the fixing flange to deflect horizontally.

[0006] Two ends of the rotating shaft of the second rotating motor are fixedly connected to connecting plates at two ends of the fixing flange respectively.

[0007] It also includes a first brake structure assembly, which includes a first connecting flange, which is fixedly connected to a blade mounting seat via a connecting column, a rotating shaft of the first rotating motor passes through a through hole on the first connecting flange and extends forward into a rotating outer cover, a first connecting disk is fixedly connected to an end of the rotating shaft in the rotating outer cover, and a circumferential side wall of the first connecting disk is fixedly connected to an inner wall of the rotating outer cover;

[0008] A first annular body is provided on the first connecting flange, a first annular groove is provided in the first annular body, a first magnetic yoke is installed in the first annular groove, a plurality of first guide rods symmetrically distributed in an annular shape are provided on the side wall of the first connecting disk arranged opposite to the first magnetic yoke, a first armature is slidably sleeved on the end of the first guide rod, a first return spring is sleeved on the first guide rod between the first armature and the first connecting disk, two ends of the first return spring are respectively connected to the first connecting disk and the first armature and apply a pulling force to the first armature and urge the first armature to move away from the first magnetic yoke; and when the first magnetic yoke is energized, the magnetic force generated by the first magnetic yoke urges the first armature to move on the first guide rod in the direction of the first magnetic yoke and adsorbs the first armature.

[0009] A first rubber brake pad is installed on the first annular groove outside the first magnetic yoke.

[0010] It also includes a second brake structure assembly, the second brake structure assembly includes a second connecting flange, the second connecting flange is fixedly connected to the rotating outer cover through a second connecting plate, the rotating shaft of the second rotating motor passes through the through hole on the second connecting flange and extends upward into the outer shell, a second connecting plate is fixedly connected to the end of the rotating shaft located in the outer shell, and the second connecting flange is fixedly connected to the outer shell;

[0011] A second annular body is provided on the second connecting flange, a second annular groove is provided in the second annular body, a second yoke is installed in the second annular groove, a plurality of second guide rods symmetrically distributed in an annular manner are provided on the side wall of the second connecting disk arranged opposite to the second yoke, a second armature is slidably sleeved on the end of the second guide rod, a second return spring is sleeved on the second guide rod between the second armature and the second connecting disk, two ends of the second return spring are respectively connected to the first connecting disk and the second armature and apply a pulling force to the second armature and urge the second armature to move away from the second yoke; and when the second yoke is energized, the magnetic force generated by the second yoke urges the second armature to move on the second guide rod in the direction of the second yoke and adsorb the second armature.

[0012] A second rubber brake pad is installed on the second annular groove outside the second magnetic yoke.

[0013] The present invention further discloses a fan, comprising a blade seat, on which at least two blades with adjustable angles as described above are symmetrically mounted.

[0014] The beneficial effects of the present invention are:

[0015] The device has a compact structure design, and has the advantages of accurate rotation angle, sensitive response, quick and thorough locking, and easy to realize automatic control. During use, the blade rotation angle can be automatically adjusted and fixed according to the required air volume in the use environment, so that the fan can still maintain a high working efficiency under different speeds or air volume requirements. This design can be applied to fans and blades in many fields according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the fan structure of the present invention;

[0017] Figure 2 A schematic diagram of the main structure of the first rotating electrical machine and the second rotating electrical machine and the connection therewith in the present invention;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure from another perspective;

[0019] Figure 4 is a schematic cross-sectional structure diagram of the first brake structure assembly in the present invention;

[0020] Figure 5 It is a schematic cross-sectional structure diagram of the second brake structure assembly in the present invention. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0022] Embodiment 1: An angle-adjustable blade, see Figures 1 to 5 .

[0023] The angle-adjustable blade includes a blade 1 and a fixing flange 304 for fixing the blade 1. The blade is fixedly connected to the mounting holes on the fixing flange 304 by bolts. In the present design, a connecting plate 308 is fixedly connected to the fixing flange 304. In the present embodiment, the two ends of the rotating shaft of the second rotating motor 306 are respectively fixedly connected to the connecting plates 308 at the two ends of the fixing flange. It also includes a first rotating motor 315 and a second rotating motor 306.

[0024] Specifically, the first rotating motor 315 is fixedly connected to the blade mounting seat 313, and the blade mounting seat 313 is connected to the blade seat (the blade seat is mounted on the rotating shaft of the motor) through the fixing hole 314 thereon, and the rotating outer cover 310 is fixedly connected to the rotating shaft 410 of the first rotating motor 315; the second rotating motor 306 is fixed on the rotating outer cover 310 and can be driven by the rotating outer cover 310 of the first rotating motor 315 to rotate with the S axis as the rotation axis, and the rotating shaft 307 on the second rotating motor 306 is fixedly connected to the connecting plate 308 and drives the fixed flange 304 to deflect horizontally with the L axis as the rotation axis.

[0025] Through the design of the above-mentioned first rotating motor 315 and the second rotating motor 306, when the rotating shaft of the first rotating motor 315 drives the rotating outer cover 310 to rotate, it can synchronously drive the connecting plate, the fixed flange 304 and the blades thereon that are relatively fixedly connected thereto to rotate with the S axis as the rotation axis to adjust the rotation angle of the blades; and when the rotating shaft of the second rotating motor 306 rotates, it can drive the connecting plate, the fixed flange 304 connected thereto and the blades thereon to deflect with the L axis as the rotation axis, so that the angle adjustment of the blades in two dimensions can be achieved through the above-mentioned first rotating motor 315 and the second rotating motor 306.

[0026] Furthermore, it also includes a first braking structure component, which includes a first connecting flange 311, and the first connecting flange 311 is fixedly connected to the blade mounting seat 313 through a connecting column 312. The rotating shaft 410 of the first rotating motor passes through the through hole on the first connecting flange 311 and extends forward to the rotating outer cover 310. A first connecting disk 417 is fixedly connected to the end of the rotating shaft located in this rotating outer cover, and the circumferential side wall of the first connecting disk 417 is fixedly connected to the inner wall of the rotating outer cover 310.

[0027] Furthermore, a first annular body 411 is provided on the first connecting flange 311, a first annular groove is provided in the first annular body 411, a first magnetic yoke 412 is installed in the first annular groove, a plurality of first guide rods 415 symmetrically distributed in an annular shape are provided on the side wall of the first connecting disk 417 arranged opposite to the first magnetic yoke 412, a first armature 414 is slidably sleeved on the end of the first guide rod 415, a first return spring 416 is sleeved on the first guide rod between the first armature 414 and the first connecting disk 417, two ends of the first return spring 416 are respectively connected to the first connecting disk 417 and the first armature 414, and apply a pulling force to the first armature and urge the first armature to move away from the first magnetic yoke 412; and when the first magnetic yoke 412 is energized, the magnetic force generated by the first magnetic yoke 412 urges the first armature 414 to move on the first guide rod 415 in the direction of the first magnetic yoke and adsorb the first armature 414, and at the same time, a first rubber brake pad 413 is installed on the first annular groove on the outer side of the first magnetic yoke.

[0028] Through the structural design of the above-mentioned first brake structure component, when the rotating shaft of the first rotating motor rotates to adjust the blade angle, its first yoke is de-energized, and the first armature 414 is pulled back by the first return spring 415 and spaced apart from the first rubber brake pad 413. When the rotating shaft of the first rotating motor rotates and completes the angle adjustment of the blade, its first yoke 412 is energized, and the magnetic force generated by the first yoke 412 prompts the first armature 414 to move toward the first yoke on the first guide rod 415 and adsorb the first armature 41 and squeeze it on the first rubber brake pad 413, so that the rotating outer cover can be fixed, and the rotating outer cover, the blade mounting seat 313, and the first rotating motor can be formed into a relatively fixed integrated structure, so as to realize the fixation of the blade on the S-axis rotation angle.

[0029] Furthermore, it also includes a second brake structure component, wherein the second brake structure component includes a second connecting flange 302, the second connecting flange 302 is fixedly connected to the rotating outer cover 310 through a second connecting plate 303, the rotating shaft 307 of the second rotating motor passes through the through hole on the second connecting flange 302 and extends upward into the housing 301, the housing 301 is connected to the second connecting flange 302, a second connecting disk 322 is fixedly connected to the end of the rotating shaft in the housing 301, a second annular body 317 is provided on the second connecting flange 302, a second annular groove is provided in the second annular body 317, a second yoke 318 is installed in the second annular groove, and a plurality of rings are provided on the side wall of the second connecting disk 322 arranged opposite to the second yoke 318 The second guide rod 320 is symmetrically distributed in a shape, and a second armature 321 is slidably sleeved on the end of the second guide rod 320. A second return spring 324 is sleeved on the second guide rod between the second armature 321 and the second connecting plate 322. The two ends of the second return spring 324 are respectively connected to the first connecting plate 322 and the second armature 321, and exert a pulling force on the second armature and urge the second armature 321 to move away from the second magnetic yoke 318. When the second magnetic yoke 318 is energized, the magnetic force generated by the second magnetic yoke 318 urges the second armature 321 to move on the second guide rod 320 in the direction of the second magnetic yoke 318 and adsorb the second armature 321. At the same time, a second rubber brake pad 319 is installed on the second annular groove on the outer side of the second magnetic yoke 318.

[0030] Through the design of the first rotating motor 315 and the second rotating motor 306, when the rotating shaft 307 of the second rotating motor drives the connecting plate 308 to rotate, it can synchronously drive the fixed flange 304 and the blades thereon fixedly connected thereto to rotate by L The shaft is deflected by the rotation axis to adjust the rotation angle of the blade; through the structural design of the above-mentioned second brake structure component, when the rotating shaft 307 of the second rotating motor rotates to adjust the angle of the blade 1, its second yoke is powered off. At this time, the second armature 321 is pulled back by the second return spring 324 and is spaced apart from the second rubber brake pad 319. When the rotating shaft 307 of the second rotating motor rotates and completes the angle adjustment of the blade, its second yoke 318 is energized. At this time, the magnetic force generated by its second yoke 318 prompts the second armature 321 to move toward the second yoke on the second guide rod 320 and adsorb the second armature 321 and squeeze it on the second rubber brake pad 319, so that the connection plate 308 and the second connection plate 303 can be fixed, so that the connection plate 308, the second connection plate 303, the fixing flange 304 and the blades thereon can form a relatively fixed integrated structure, thereby realizing the fixation of the blade at the L-axis rotation angle.

[0031] In this way, the blades can be rotated on the S axis and the L axis by the first rotating motor and the second rotating motor, and the angles of the blades can be adjusted and fixed respectively by the structural design of the first braking structure assembly and the second braking structure assembly.

[0032] In this embodiment, the power supply involved in the first rotating motor 315 and the second rotating motor 306 and the first brake structure assembly and the second brake structure assembly are all powered by the currently commonly used brush principle. Since the power supply method is not the design of this embodiment, the structure of the brush will not be described in detail in this embodiment.

[0033] Embodiment 2: A fan, see Figures 1 to 5 The fan includes a blade seat 2, on which at least two blades with adjustable angles as described above are symmetrically mounted, and when fixed, the blade mounting seat 313 is connected to the blade seat 2 through the fixing hole 314 thereon. The above structural design can realize the angle adjustment and fixation of the fan blades on the above S axis and L axis to meet the needs of different use environments.

[0034] In summary, this structural design can automatically adjust the blade rotation angle and fix it according to the required air volume in the use environment, so that the fan can still maintain a high working efficiency under different speeds or air volume requirements. This design can be applied to fans and blades in many fields according to actual needs.

[0035] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. An angle-adjustable blade, comprising a blade and a fixing flange for fixing the blade; characterized in that: The fixing flange is fixedly connected with a connecting plate, and also includes a first rotating motor and a second rotating motor. The first rotating motor is connected with a blade mounting seat, and a rotating outer cover is fixedly connected with the rotating shaft of the first rotating motor; the second rotating motor is fixed to the rotating outer cover and can be driven by the rotating outer cover of the first rotating motor to rotate with the S axis as the rotating axis, and the rotating shaft on the second rotating motor is fixedly connected with the connecting plate and drives the fixing flange to deflect horizontally with the L axis as the rotating axis; the S axis is the axial direction of the blade in the length direction; the L axis is the rotating axis on the second rotating motor and is parallel to the rotating axis axis on the fan; Two ends of the rotating shaft of the second rotating motor are fixedly connected to the connecting plates at two ends of the fixing flange respectively; It also includes a first brake structure assembly, which includes a first connecting flange, which is fixedly connected to a blade mounting seat via a connecting column, a rotating shaft of the first rotating motor passes through a through hole on the first connecting flange and extends forward into a rotating outer cover, a first connecting disk is fixedly connected to an end of the rotating shaft in the rotating outer cover, and a circumferential side wall of the first connecting disk is fixedly connected to an inner wall of the rotating outer cover; The first connecting flange is provided with a first annular body, the first annular body is provided with a first annular groove, a first magnetic yoke is installed in the first annular groove, a plurality of first guide rods symmetrically distributed in an annular shape are provided on the side wall of the first connecting disk arranged opposite to the first magnetic yoke, a first armature is slidably sleeved on the end of the first guide rod, a first return spring is sleeved on the first guide rod between the first armature and the first connecting disk, two ends of the first return spring are respectively connected to the first connecting disk and the first armature and apply a pulling force to the first armature and urge the first armature to move in a direction away from the first magnetic yoke; and when the first magnetic yoke is energized, the magnetic force generated by the first magnetic yoke urges the first armature to move on the first guide rod in the direction of the first magnetic yoke and adsorb the first armature; A first rubber brake pad is installed on the first annular groove on the outer side of the first magnetic yoke; It also includes a second brake structure assembly, the second brake structure assembly includes a second connecting flange, the second connecting flange is fixedly connected to the rotating outer cover through a second connecting plate, the rotating shaft of the second rotating motor passes through the through hole on the second connecting flange and extends upward into the outer shell, a second connecting plate is fixedly connected to the end of the rotating shaft located in the outer shell, and the second connecting flange is fixedly connected to the outer shell; A second annular body is provided on the second connecting flange, a second annular groove is provided in the second annular body, a second yoke is installed in the second annular groove, a plurality of second guide rods symmetrically distributed in an annular manner are provided on the side wall of the second connecting disk arranged opposite to the second yoke, a second armature is slidably sleeved on the end of the second guide rod, a second return spring is sleeved on the second guide rod between the second armature and the second connecting disk, two ends of the second return spring are respectively connected to the first connecting disk and the second armature and apply a pulling force to the second armature and urge the second armature to move away from the second yoke; and when the second yoke is energized, the magnetic force generated by the second yoke urges the second armature to move on the second guide rod in the direction of the second yoke and adsorb the second armature.

2. The angle-adjustable blade according to claim 1, characterized in that: A second rubber brake pad is installed on the second annular groove outside the second magnetic yoke.

3. A fan, comprising a blade mounting seat, characterized in that: At least two angle-adjustable blades as described in any one of claims 1-2 are symmetrically mounted on the blade mounting seat.

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