CN114837921B - Air supply arrangement based on not uniform velocity disturbance principle - Google Patents
Air supply arrangement based on not uniform velocity disturbance principle Download PDFInfo
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- CN114837921B CN114837921B CN202210372256.XA CN202210372256A CN114837921B CN 114837921 B CN114837921 B CN 114837921B CN 202210372256 A CN202210372256 A CN 202210372256A CN 114837921 B CN114837921 B CN 114837921B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
- F03G7/061—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element
- F03G7/0614—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element using shape memory elements
- F03G7/06145—Springs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses an air supply device based on an unequal speed disturbance principle, which comprises an air supply module, a disturbance module and an unequal speed driving module; the air supply module comprises an air duct, an elastic film and a gradually-reducing nozzle, the gradually-reducing nozzle and the elastic film are respectively arranged at the front end and the rear end of the air duct, an air inlet groove is formed in the side wall of the air duct, the disturbance module is arranged on one side of the elastic film, and the unequal-speed drive module is connected with the disturbance module; the non-constant-speed driving module drives the disturbance module, and a disturbance rod of the disturbance module further drives the elastic film, so that the center of the cylindrical airflow in the ventilation pipeline is accelerated under the pushing action of the elastic film, and then the gradual-reducing nozzle is curled to generate a vortex ring. The device utilizes the unequal-speed characteristic generated by the unequal-speed driving module, so that the disturbance module pushes the film to realize unequal-speed disturbance, the disturbance effect is good, and the noise generated by mutual collision when the electromagnet is opened and closed is eliminated.
Description
Technical Field
The invention relates to the technical field of hydrodynamics, in particular to an air supply device based on an unequal-speed disturbance principle.
Background
The existing disturbance type vortex ring generating device mainly comprises mechanical disturbance of thermal driving for driving a disturbance rod through gas expansion caused by thermal expansion and cold contraction, mechanical disturbance for directly impacting a film through an electromagnet, airflow disturbance of small hole injection after gas compression pressurization or expansion pressurization or airflow disturbance of sudden change of a flow cross section, and the defects of poor disturbance effect and limited disturbance range caused by low pulse frequency, high noise, small hole injection airflow or easy divergence of high-speed airflow generated after the cross section is contracted exist respectively.
Disclosure of Invention
The invention aims to solve the technical problem that the air supply device based on the unequal-speed disturbance principle is provided aiming at the defects in the prior art, the unequal-speed characteristic generated by the unequal-speed driving module is utilized, so that the disturbance module pushes the film to realize unequal-speed disturbance, the disturbance effect is good, and the noise generated by mutual impact when the electromagnet is opened and closed is eliminated.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an air supply device based on an unequal speed disturbance principle comprises an air supply module, a disturbance module and an unequal speed drive module; the air supply module comprises an air duct, an elastic film and a gradually-reducing nozzle, the gradually-reducing nozzle and the elastic film are respectively arranged at the front end and the rear end of the air duct, an air inlet groove is formed in the side wall of the air duct, the disturbance module is arranged on one side of the elastic film, and the unequal-speed drive module is connected with the disturbance module; the non-constant-speed driving module drives the disturbance module, and a disturbance rod of the disturbance module further drives the elastic film, so that the center of the cylindrical airflow in the ventilation pipeline is accelerated under the pushing action of the elastic film, and then the gradual-reducing nozzle is curled to generate a vortex ring.
According to the technical scheme, the disturbance module comprises a disturbance rod and a disturbance connecting rod set, one end of the disturbance rod is arranged on one side of the elastic film, the other end of the disturbance rod is connected with the disturbance connecting rod set, and the non-uniform speed driving module is connected with the disturbance connecting rod set.
According to the technical scheme, the disturbance connecting rod group comprises a disturbance connecting rod, a sliding frame, no. two disturbance connecting rods and a return spring, one end of the disturbance connecting rod is connected with the disturbance connecting rod through a rotating shaft, the disturbance connecting rod can rotate around the rotating shaft, the disturbance connecting rod and the No. two disturbance connecting rods are respectively sleeved on a sliding frame upper slideway, the disturbance connecting rod and the No. two disturbance connecting rods can move back and forth along the slideway, the other end of the disturbance connecting rod and one end of the No. two disturbance connecting rods are connected through the return spring, and the other end of the No. two disturbance connecting rods is connected with the unequal-speed driving module.
According to the technical scheme, the rear end of the ventilating pipeline is provided with the disturbance bottom cover, the disturbance bottom cover is arranged on the outer side of the elastic film, the disturbance bottom cover is provided with the disturbance through hole, and the disturbance rod penetrates through the disturbance through hole to be in contact with the elastic film.
According to the technical scheme, the unequal-speed driving module comprises an unequal-speed spherical shell unit, a rotating motor, a coupler, a driving unequal-speed shaft and a driven unequal-speed shaft, wherein the rotating motor is connected with one end of the driving unequal-speed shaft through the coupler, the other end of the driving unequal-speed shaft is connected with one end of the unequal-speed spherical shell unit, the other end of the unequal-speed spherical shell unit is connected with one end of the driven unequal-speed shaft, and the other end of the driven unequal-speed shaft is connected with the disturbance module.
According to the technical scheme, the unequal-speed spherical shell unit comprises an unequal-speed connecting rod, sealing pistons, an unequal-speed spherical shell and a memory alloy spring, wherein two through holes which are intersected and form a certain included angle are arranged in the unequal-speed spherical shell and respectively comprise a first through hole and a second through hole, the sealing piston is sleeved at two ends in each through hole, and the memory alloy spring is connected between one sealing piston in one through hole and one sealing piston in the other through hole;
the outer ends of the two sealing pistons in the first through hole are respectively hinged with two ends of a shaft end rod connected with one end of the driving non-constant-speed shaft through non-constant-speed connecting rods, and the other end of the driving non-constant-speed shaft is connected with a rotating motor through a coupler;
the outer ends of the two sealing pistons in the second through hole are respectively hinged with two ends of a shaft end rod connected with one end of a driven non-constant speed shaft through non-constant speed connecting rods, and the other end of the driven non-constant speed shaft is connected with a disturbance module;
the connection of the non-constant speed connecting rod with the sealing piston, the shaft end rod of the driving non-constant speed shaft and the shaft end rod of the driven non-constant speed shaft is hinged.
According to the technical scheme, one end of the driving non-constant speed shaft and one end of the driven non-constant speed shaft are respectively connected with the middle parts of the corresponding shaft end rods.
According to the technical scheme, the driving non-constant-speed shaft is nested with the conductive bearing, and the memory alloy spring is connected with the power supply module through the conductive bearing.
According to the technical scheme, the through holes are cylindrical through holes, the two cylindrical through holes are mutually perpendicular and intersected, and the intersection point is the circle center of the spherical shell with unequal speed.
According to the technical scheme, a sealing ring is arranged between the sealing piston and the cylindrical through hole.
The invention has the following beneficial effects:
1. this device utilizes the not constant speed characteristic that the drive module of not constant speed produced for the disturbance pole promotes the film and realizes the not constant speed disturbance, and the disturbance effect is good, owing to be mechanical transmission, consequently when guaranteeing the disturbance effect, has eliminated the noise that the electro-magnet was opened and shut each other and has collided the production, and the noise is low, easily produces the disturbance effect difference and the limited drawback of disturbance scope that the air current dispersion leads to when having avoided the air current disturbance simultaneously.
2. The device adopts a common motor which can not adjust the speed, and further adjusts the disturbance speed of the unequal speed rods by adjusting the length of the memory alloy spring, and the disturbance speed of the unequal speed rods is greater than that of the motor in the direct drive process during the high-speed section, so that the motor cost is saved, the adjusting range is wide, and the cost is low.
3. The non-constant-speed ball shell and the piston are driven by the non-compressible fluid, so that only one memory alloy spring needs to be supplied with power, the two pistons connected with the spring are controlled to move, and then the movement of the remaining two pistons can be controlled through hydraulic linkage, so that the design requirement of the electronic control module can be greatly reduced.
Drawings
FIG. 1 is a schematic structural diagram of an air supply device based on the principle of unequal-speed disturbance according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a perturbation module according to an embodiment of the present invention;
FIG. 3 is a schematic view of an exemplary embodiment of an air supply module;
FIG. 4 is a diagram of an unequal speed principle reference coordinate system of an air supply device based on the unequal speed disturbance principle in an embodiment of the present invention;
FIG. 5 is a schematic view of the structure of a conductive bearing in an embodiment of the present invention;
FIG. 6 is a perspective view of an air supply device based on the principle of unequal-speed disturbance according to an embodiment of the present invention;
in the figure, 1-a reducing nozzle, 2-a blast pipeline, 3-a disturbing bottom cover, 4-a disturbing rod, 5-a disturbing connecting rod, 6-a sliding frame, 7-a disturbing connecting rod, 8-a driven unequal speed shaft, 9-an unequal speed connecting rod, 10-a sealing piston, 11-an unequal speed spherical shell, 12-a sealing ring, 13-a memory alloy spring, 14-a conductive bearing, 15-a power supply module, 16-a driving unequal speed shaft, 17-a coupler, 18-a rotating motor, 19-a return spring and 20-an elastic film.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 5, an embodiment of an air supply device based on an unequal speed disturbance principle according to the present invention includes an air supply module, a disturbance module, and an unequal speed driving module; the air supply module comprises an air pipe, an elastic film and a gradually-reducing nozzle, the gradually-reducing nozzle and the elastic film are respectively arranged at the front end and the rear end of the air pipe, an air inlet groove is formed in the side wall of the air pipe, the air inlet groove is arranged between the elastic film and the gradually-reducing nozzle, external air flow can enter the air pipe through the air inlet groove, the disturbance module is arranged on one side of the elastic film, the disturbance module is arranged outside the air pipe, and the unequal-speed drive module is connected with the disturbance module; the non-constant speed driving module drives the disturbing module, and the disturbing rod of the disturbing module further drives the elastic film 20, so that the center of the cylindrical airflow in the ventilating duct is accelerated under the pushing action of the elastic film, and then the gradual-reducing nozzle is curled to generate a vortex ring.
Furthermore, the disturbance module comprises a disturbance rod 4 and a disturbance connecting rod set, one end of the disturbance rod is arranged on one side of the elastic film, the other end of the disturbance rod is connected with the disturbance connecting rod set, and the non-uniform speed driving module is connected with the disturbance connecting rod set.
Further, the disturbance connecting rod group comprises a disturbance connecting rod 5, a sliding frame 6, a second disturbance connecting rod 7 and a return spring 19, one end of the first disturbance connecting rod is connected with the disturbance rod through a rotating shaft, the first disturbance connecting rod can rotate around the rotating shaft, the first disturbance connecting rod and the second disturbance connecting rod are respectively sleeved on a slide rail on the sliding frame, the first disturbance connecting rod and the second disturbance connecting rod can move back and forth along the slide rail, the other end of the first disturbance connecting rod is connected with one end of the second disturbance connecting rod through the return spring, and the other end of the second disturbance connecting rod is connected with the unequal-speed driving module.
Furthermore, the other end of the disturbance rod is provided with a rotating shaft, one end of the first disturbance connecting rod is connected with the rotating shaft, and the other end of the first disturbance connecting rod is connected with the return spring; one end of a second disturbance connecting rod is connected with the return spring, and the other end of the second disturbance connecting rod is connected with the unequal-speed driving module; the sliding frame is arranged at the joint of the first disturbance connecting rod and the second disturbance connecting rod, and the telescopic motion of the first disturbance connecting rod and the telescopic motion of the second disturbance connecting rod are ensured to be on the same straight line.
Furthermore, a disturbance bottom cover is arranged at the rear end of the ventilation pipeline, the disturbance bottom cover is arranged on the outer side of the elastic film, a disturbance through hole is formed in the center of the disturbance bottom cover, and the disturbance rod penetrates through the disturbance through hole to be in contact with the elastic film; the diameter of one end of the disturbing rod is slightly smaller than the inner diameter of the disturbing through hole in the center of the disturbing bottom cover, so that the disturbing rod can reciprocate in the disturbing through hole.
Further, the unequal speed drive module comprises an unequal speed spherical shell unit, a rotating motor 18, a coupling 17, a driving unequal speed shaft 16 and a driven unequal speed shaft 8 which are connected, wherein the rotating motor is connected with one end of the driving unequal speed shaft 16 through the coupling, the other end of the driving unequal speed shaft 16 is connected with one end of the unequal speed spherical shell unit, the other end of the unequal speed spherical shell unit is connected with one end of the driven unequal speed shaft 8, and the other end of the driven unequal speed shaft 8 is connected with a second disturbance connecting rod 7 of the disturbance module.
Further, the unequal-speed spherical shell unit comprises an unequal-speed connecting rod 9, sealing pistons 10, an unequal-speed spherical shell 11 and a memory alloy spring 13, two cylindrical through holes which are intersected and form a certain included angle are arranged in the unequal-speed spherical shell and respectively are a first cylindrical through hole and a second cylindrical through hole, two ends of each cylindrical through hole are sleeved with the sealing pistons, the memory alloy spring is connected between one sealing piston in one cylindrical through hole and one sealing piston in the other cylindrical through hole, and the memory alloy spring is electrified or powered off to adjust the position of the sealing piston in the cylindrical through hole;
the outer ends of two sealing pistons in the first cylindrical through hole are respectively hinged with two ends of a shaft end rod connected with one end of the driving non-constant-speed shaft through two non-constant-speed connecting rods, and the other end of the driving non-constant-speed shaft is connected with a rotating motor through a coupler;
the outer ends of two sealing pistons in the second cylindrical through hole are respectively hinged with two ends of a shaft end rod connected with one end of a driven non-constant-speed shaft through two non-constant-speed connecting rods, and the other end of the driven non-constant-speed shaft is connected with a second disturbance connecting rod of the disturbance module;
the connection of the non-constant speed connecting rod with the sealing piston, the shaft end rod of the driving non-constant speed shaft and the shaft end rod of the driven non-constant speed shaft is hinged.
And limiting lugs are arranged on the sealing piston, in the first cylindrical through hole and the second cylindrical through hole and used for limiting and positioning the moving position of the sealing piston.
Further, one end of the driving non-constant speed shaft and one end of the driven non-constant speed shaft are respectively connected with the middle parts of the corresponding shaft end rods.
Further, a conductive bearing 14 is nested on the driving non-constant speed shaft, and the memory alloy spring 13 is connected with a power supply module 15 through the conductive bearing 14; the power supply module 15 is used for powering on or powering off the memory alloy spring 13, adjusting the length of the memory alloy spring 13 and adjusting the position of the sealing piston in the cylindrical through hole, thereby adjusting the non-constant speed characteristic.
The conductive bearing 14 comprises a conductive rod 1401, an outer bearing 1402 and an inner bearing 1403, the outer bearing 1402 is sleeved outside the inner bearing 1403, the inner bearing 1403 is sleeved on the driving non-constant-speed shaft, and the outer bearing 1402 is connected with the power supply module 15 through the conductive rod 1401.
Furthermore, the two cylindrical through holes are mutually and vertically intersected, and the intersection point is the circle center of the spherical shell with unequal speed.
Further, a sealing ring 12 is provided between the sealing piston and the cylindrical through hole.
Furthermore, the variable-speed spherical shell is a sphere with two vertical cylindrical through holes formed in the plane, one end of the sealing piston is a piston, a hook is arranged on the piston, and the other end of the sealing piston is a connecting rod with a rotating shaft; the non-constant-speed connecting rod is a connecting rod with rotating shafts at two ends, the sealing piston is inserted into the cylindrical through hole in the non-constant-speed spherical shell, the other end of the sealing piston is connected with the rotating shaft at the head section of the non-constant-speed connecting rod, and the rotating shaft at the tail end of the non-constant-speed connecting rod is connected with the rotating shaft of the driving non-constant-speed shaft or the driven non-constant-speed shaft. The memory alloy spring is connected with the hooks on the two sealing pistons corresponding to the driving non-constant speed shaft.
Furthermore, the memory alloy spring is an electrothermal spring, when the memory alloy spring is electrified, the memory alloy spring generates heat, and the memory alloy spring is heated and extended to drive the corresponding sealing piston to move outwards; when the power of the memory alloy spring is cut off, the memory alloy spring retracts to drive the corresponding sealing piston to move towards the spherical center of the unequal-speed spherical shell.
Furthermore, the inner cavities of the two intersected cylindrical through holes are communicated with each other and filled with fluid, when the memory alloy spring is electrified and elongated, one sealing piston in the first cylindrical through hole connected with the memory alloy spring and one sealing piston in the second cylindrical through hole are driven to move outwards, and meanwhile the other sealing piston in the first cylindrical through hole and the other sealing piston in the second cylindrical through hole which are not connected with the memory alloy spring move towards the sphere center; when the memory alloy spring is powered off and retracts, one sealing piston in the first cylindrical through hole and one sealing piston in the second cylindrical through hole which are connected with the memory alloy spring are driven to move towards the sphere center, and meanwhile, the other sealing piston in the first cylindrical through hole and the other sealing piston in the second cylindrical through hole which are not connected with the memory alloy spring move outwards.
When the unequal speed connecting rod drives the unequal speed spherical shell to rotate, the rotating direction of the unequal speed connecting rod is vertical to the axis of the sealing piston, so that the sealing piston cannot move under the action of axial force in the rotating process, if the two cylindrical through holes are filled with fluid, the sealing piston can be further prevented from moving in the rotating process, the fluid is difficult to compress, when one sealing piston in each cylindrical through hole moves outwards, the sealing piston at the other end necessarily moves towards the center of a sphere, the movement of the four sealing pistons can be controlled through one memory alloy spring, and a control circuit is simplified.
Further, the coupling is not electrically conductive.
Further, as shown in fig. 6, the distance between the two farthest end surfaces of the piston in the first through hole or the second through hole is b, the distance between the joint of the unequal speed shaft and the shaft end rod thereof and the spherical center of the unequal speed spherical shell is a, and b is always less than 2a under any working condition. If the distance b is greater than the distance 2a, mechanical interference may occur during the transmission to cause transmission failure, where the non-constant speed shafts include a driving non-constant speed shaft and a driven non-constant speed shaft, i.e., both the driving non-constant speed shaft and the driven non-constant speed shaft satisfy this condition.
The working principle of the invention is as follows:
referring to fig. 1, in an initial state of the air supply device based on the unequal-speed disturbance principle, an external air flow enters an air supply module from an air inlet 201 of an air supply duct 2 and then flows out from a tapered nozzle 1. The rotating electrical machine 18 starts to operate, and the driving non-constant speed shaft 16 also starts to rotate under the action of the coupling 17, and since the driving non-constant speed shaft 16 is connected with the power supply module 15 through the conductive bearing 14, the rotation of the driving non-constant speed shaft 16 does not cause the movement of the power supply module 15. The rotation of the driving non-constant velocity shaft 16, in turn, rotates the non-constant velocity connecting rod 9 connected thereto, which in turn drives the rotation of the driven non-constant velocity shaft 8 by the non-constant velocity spherical shell 11. The variable-velocity drive module has a variable-velocity characteristic when there is an angle between the driving variable-velocity shaft 16 and the driven variable-velocity shaft 8, and thus changes the constant-velocity motion of the driving variable-velocity shaft 16 driven by the rotating electrical machine 18 into a variable-velocity motion of the driven variable-velocity shaft 8 that is slow and fast. And then the disturbing rod 4 in the disturbing module connected with the driven non-constant-speed shaft realizes the linear motion of alternating speed along the disturbing through hole in the center of the disturbing bottom cover 3. The design of the first disturbing connecting rod 5, the sliding frame 6, the second disturbing connecting rod 7 and the return spring 19 increases the degree of freedom of the disturbing module, and prevents the disturbing rod 4 from being blocked when moving along the disturbing bottom cover 3. The disturbing rod further drives the elastic film 20, so that the center of the cylindrical airflow in the ventilation pipeline is accelerated under the pushing action of the elastic film, and further the gradual-reducing nozzle is curled to generate a vortex ring.
The reason why the unequal speed driving module generates the unequal speed characteristic is shown in fig. 4, and the working principle of the unequal speed driving module is as follows: selecting point A (x) 1 ，y 1 ，z 1 ) Point B (x) 2 ，y 2 ，z 2 ) Establishing XYZ coordinate system, A (x), with point O (0,0,0) 1 ，y 1 ，z 1 ) Point B (x) 2 ，y 2 ，z 2 ) The coordinates of the top point of the piston connected with the memory alloy spring in the first through hole and the coordinates of the top point of the piston connected with the memory alloy spring in the second through hole are respectively, and the point O (0,0,0) isThe spherical center of the spherical shell with different speeds, A, B, O, and the triangular relation formed by the three points is as follows: (BO) 2 +(AO) 2 ＝(AB) 2 ；
When BO = AO = r,
the coordinates of point A, B are, respectively:
x 1 ＝cosθ 1 ×r x 2 ＝-sinθ 2 cosα×r；
y 1 ＝0 y 2 ＝sinθ 2 sinα×r；
z 1 ＝sinθ 1 ×r z 1 ＝cosθ 2 ×r；
then, (x) 1 -x 1 ) 2 +(y 1 -y 2 ) 2 +(z 1 -z 2 ) 2 ＝2r 2 ；
(cosθ 1 +sinθ 1 cosα) 2 +(sinθ 2 ) 2 (sinα) 2 +(sinθ1-cosθ 2 ) 2 ＝2；
a×cosθ 1 sinθ 2 cosα＝b×sinθ 1 cosθ 2 ；
tanθ 1 ＝cosα×tanθ 2 ；
It can be seen that the angular speed relationship between the output shaft of the rotating electrical machine 18 and the coupling 17 is only related to the included angle α between the output shaft of the rotating electrical machine 18 and the coupling 17, and when the output shaft of the rotating electrical machine 18 rotates at a constant speed, the coupling 17 fluctuates in speed, and the rotating speed is fast or slow. When the memory alloy spring 13 contracts to reduce the line segment AO and BO is not equal to AO, tan theta 1 ＝kcosα×tanθ 2 Wherein k is a correlation coefficient with BO and AO components, and the larger the value of k is, the larger the anisometric characteristic is.
Therefore, when the included angle α between the output shaft of the rotating motor 18 and the coupling 17 is fixed and unchanged, the length is changed by the memory alloy spring 13, and then k is changed, so that the unequal speed characteristic is further intensified, and the perturbation of the striker of the perturbation module on the film is presented in a pulse form by using the fast and slow rotating speed of the unequal speed driving module.
The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.
Claims (8)
1. An air supply device based on an unequal speed disturbance principle is characterized by comprising an air supply module, a disturbance module and an unequal speed driving module; the air supply module comprises an air duct, an elastic film and a gradually-reducing nozzle, the gradually-reducing nozzle and the elastic film are respectively arranged at the front end and the rear end of the air duct, an air inlet groove is formed in the side wall of the air duct, the disturbance module is arranged on one side of the elastic film, and the unequal-speed drive module is connected with the disturbance module;
the unequal-speed driving module comprises an unequal-speed spherical shell unit, a rotating motor, a coupling, a driving unequal-speed shaft and a driven unequal-speed shaft, wherein the rotating motor is connected with one end of the driving unequal-speed shaft through the coupling;
the unequal-speed spherical shell unit comprises an unequal-speed connecting rod, sealing pistons, unequal-speed spherical shells and memory alloy springs, wherein two through holes which are intersected and form a certain included angle are arranged in the unequal-speed spherical shells and respectively comprise a first through hole and a second through hole, two ends in each through hole are sleeved with the sealing pistons, and the memory alloy spring is connected between one sealing piston in one through hole and one sealing piston in the other through hole;
the outer ends of the two sealing pistons in the first through hole are respectively hinged with two ends of a shaft end rod connected with one end of the driving non-constant-speed shaft through non-constant-speed connecting rods, and the other end of the driving non-constant-speed shaft is connected with a rotating motor through a coupling;
the outer ends of the two sealing pistons in the second through hole are respectively hinged with two ends of a shaft end rod connected with one end of a driven non-constant-speed shaft through non-constant-speed connecting rods, and the other end of the driven non-constant-speed shaft is connected with a disturbance module;
the connection of the non-constant-speed connecting rod with the sealing piston, the shaft end rod of the driving non-constant-speed shaft and the shaft end rod of the driven non-constant-speed shaft is hinged;
the distance between the farthest end surfaces of the two pistons in the first through hole or the second through hole is b, the distance between the joint of the unequal-speed shaft and the shaft end rod of the unequal-speed shaft and the spherical center of the unequal-speed spherical shell is a, and b is smaller than 2a.
2. The air supply device based on the unequal speed disturbance principle according to claim 1, wherein the disturbance module comprises a disturbance rod and a disturbance linkage, one end of the disturbance rod is arranged at one side of the elastic membrane, the other end of the disturbance rod is connected with the disturbance linkage, and the unequal speed drive module is connected with the disturbance linkage.
3. The air supply device based on the unequal speed disturbance principle according to claim 2, wherein the disturbance linkage comprises a first disturbance connecting rod, a sliding frame, a second disturbance connecting rod and a return spring, one end of the first disturbance connecting rod is connected with the disturbance rod through a rotating shaft, the first disturbance connecting rod can rotate around the rotating shaft, the first disturbance connecting rod and the second disturbance connecting rod are respectively sleeved on a slide way on the sliding frame, the first disturbance connecting rod and the second disturbance connecting rod can move back and forth along the slide way, the other end of the first disturbance connecting rod is connected with one end of the second disturbance connecting rod through the return spring, and the other end of the second disturbance connecting rod is connected with the unequal speed driving module.
4. The unequal-speed-disturbance-principle-based air supply device according to claim 2, wherein a disturbance bottom cover is arranged at the rear end of the ventilation duct, the disturbance bottom cover is arranged outside the elastic membrane, a disturbance through hole is formed in the disturbance bottom cover, and the disturbance rod passes through the disturbance through hole and contacts with the elastic membrane.
5. The unequal speed disturbance principle-based air supply device according to claim 1, wherein one end of the driving unequal speed shaft and one end of the driven unequal speed shaft are respectively connected with the middle parts of the corresponding shaft end rods.
6. The air supply device based on the unequal-speed disturbance principle according to claim 1, wherein a conductive bearing is nested on the active unequal-speed shaft, and the memory alloy spring is connected with a power supply module through the conductive bearing.
7. The air supply device based on the unequal speed disturbance principle according to claim 1, wherein the two through holes are mutually and vertically intersected, and the intersection point is the center of a circle of the unequal speed spherical shell.
8. The air supply device based on the unequal speed disturbance principle according to claim 1, wherein a sealing ring is arranged between the sealing piston and the through hole.
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|---|---|---|---|---|
| MXPA03008809A (en) * | 2001-03-26 | 2004-10-15 | Alexander Thompson Glenn | Constant velocity coupling and control system therefor. |
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