CN115126706B - Air rectification type air supply device - Google Patents
Air rectification type air supply device Download PDFInfo
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- CN115126706B CN115126706B CN202210696705.6A CN202210696705A CN115126706B CN 115126706 B CN115126706 B CN 115126706B CN 202210696705 A CN202210696705 A CN 202210696705A CN 115126706 B CN115126706 B CN 115126706B
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- air
- rectification
- pipe
- air inlet
- air supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention discloses an air rectification type air supply device which comprises an axial flow fan, an air inlet pipe, a main air supply pipe, a rectification cut-off air supply pipe, a push-pull driving mechanism and a rectification air push plate generating device, wherein one end of the main air supply pipe is sleeved in the air inlet pipe, the rectification cut-off air supply pipe is sleeved in the main air supply pipe, the push-pull driving mechanism is connected with the rectification cut-off air supply pipe, the axial flow fan is arranged at an interlayer air inlet at one end of the air inlet pipe, the other end of the air inlet pipe is provided with an annular air outlet, the annular air outlet of the air inlet pipe is butted with an annular air inlet in the side wall of the main air supply pipe, and the outer end of the main air supply pipe is connected with a tapered nozzle; the rectification air push plate generating device is arranged at the tail end of the rectification cutoff blast pipe, the head end of the rectification cutoff blast pipe is open, and an annular secondary cutoff air inlet is formed in the side wall of the rectification cutoff blast pipe. The vortex ring structure is more stable, the vortex ring propagation path is more accurate, the axial speed difference in the intercepted airflow is reduced, and the vortex ring structure is more complete.
Description
Technical Field
The invention relates to the technical field of fluid air supply equipment, in particular to an air rectification type air supply device.
Background
According to the traditional piston push plate type vortex ring generation device, because the gas velocity is given by the piston push plate, the velocity of the piston push plate directly influences the propagation velocity of a vortex ring generated by the piston push plate, the propagation velocity can be improved by arranging the reduction nozzle at the front end, and the defect caused by the fact that the air supply amount is reduced and two factors of ventilation amount and propagation distance cannot be considered simultaneously is overcome. The problem that the vortex ring propagation speed is low is solved through cutting dynamic airflow generation to the formula of cutting vortex ring, and then can compromise these two indexes of vortex ring propagation distance and air supply volume simultaneously through adjusting the frequency of cutting, but because there is an opening and shutting time difference at the air inlet of cutting the in-process, and the design of air inlet often can cause the problem of cutting back air current homogeneity variation, and then leads to the vortex ring to propagate not on a straight line.
Although the piston type vortex ring generating device cannot simultaneously take into account two factors of ventilation quantity and propagation distance, the piston type vortex ring generating device enables gas to be uniformly accelerated in a push plate or piston mode, and then the vortex ring generating effect is optimal. Therefore, it is necessary to design a generating device that can satisfy the three requirements of the propagation distance, the ventilation amount and the straight propagation at the same time.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an air rectification type air supply device aiming at the defects in the prior art, so that the vortex ring structure is more stable, the vortex ring propagation path is more accurate, the axial speed difference in the intercepted air flow is reduced, and the vortex ring structure is more complete.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an air rectification type air supply device comprises an axial flow fan, an air inlet pipe, a main air supply pipe, a rectification cut-off air supply pipe, a push-pull driving mechanism and a rectification air push plate generating device, wherein one end of the main air supply pipe is sleeved in the air inlet pipe, the rectification cut-off air supply pipe is sleeved in the main air supply pipe, and the push-pull driving mechanism is connected with the rectification cut-off air supply pipe to drive the rectification cut-off air supply pipe to move back and forth along the axial direction;
the wall of the air inlet pipe is provided with an interlayer, the axial flow fan is arranged at an interlayer air inlet at one end of the air inlet pipe, an annular air outlet is arranged at the other end of the air inlet pipe, the annular air outlet of the air inlet pipe is butted with an annular air inlet in the side wall of the main air supply pipe, and an air outlet is arranged at the outer end of the main air supply pipe and connected with the gradually-reduced nozzle;
rectification air push pedal produces the device and sets up in the rectification and blocks the tail end of blast pipe, and the rectification blocks the head end of blast pipe and is uncovered, and the rectification blocks the head end of blast pipe and compares the tail end and more be close to the air outlet of main blast pipe, and the rectification blocks and is equipped with annular secondary on the lateral wall of blast pipe and blocks the air inlet, and the secondary blocks the air inlet and blocks blast pipe round trip movement and annular air intake stagger or butt joint along with the rectification.
According to the technical scheme, the air inlet pipe comprises an air inlet outer pipe and an air inlet inner pipe, the air inlet outer pipe is sleeved with the air inlet inner pipe, and the air inlet inner pipe is sleeved with one end of the main air supply pipe.
According to the technical scheme, the sleeved end of the air inlet pipe and the main air supply pipe is in a frustum shape.
According to the technical scheme, the annular air inlet consists of a plurality of arc-shaped openings which are distributed at intervals along the circumferential direction of the main air supply pipe, and a rectification air valve is arranged at each arc-shaped opening on the main air supply pipe;
the rectification pneumatic valve includes the arc inlet plate, the arc inlet plate sets up on the outer wall of main supply pipe, there are a plurality of inlet ports along arc length direction interval arrangement on the arc inlet plate, all correspond on every inlet port and be equipped with a pneumatic valve, be connected with compression spring between pneumatic valve and the arc inlet plate, pneumatic valve is including keeping out the wind atress piece and disk seat, the disk seat sets up in the inlet port, the disk seat is back taper or back taper platform shape, the upper end of disk seat is located to the slope of the interior air current flow direction of inlet pipe clamp dorsad by the atress piece that keeps out the wind, the outer wall of disk seat is equipped with spacing arch.
According to the technical scheme, a honeycomb rectifying plate is arranged between the reducing nozzle and the main air supply pipe.
According to the technical scheme, the push-pull driving mechanism comprises a driving motor, a driving gear and a driving rack, the driving rack is arranged on the outer wall of the rectifying cutoff air supply pipe, the driving motor is fixedly arranged on an air inlet inner pipe of an air inlet pipe, and the driving gear is connected with an output shaft of the driving motor and meshed with the driving rack; the driving motor drives the driving gear to rotate, and the driving gear drives the rectification blocking air supply pipe to move back and forth along the axial direction through the driving rack.
According to the technical scheme, rectification air push pedal produces the device and includes air push pedal chamber, the magnetic force push pedal, magnetic force pole and drive transmission mechanism, the air push pedal chamber sets up in the rectification and cuts the tail end of blast pipe, cut the inner chamber sprue intercommunication of blast pipe with the rectification, the air push pedal intracavity is provided with the elastic modulus, the magnetic force push pedal sets up on the elastic membrane, the magnetic force pole sets up in the outside of elastic membrane and magnetic force push pedal, drive transmission mechanism is connected with the magnetic force pole, be equipped with the magnetic force contact on the pole head of magnetic force pole.
According to the technical scheme, the driving transmission mechanism comprises a fixed rack, a driven gear, a one-way ratchet device and a large gear, the large gear is arranged on the rectifying cutoff air supply pipe, the fixed rack is fixedly arranged on the main air supply pipe, the driven gear is meshed with the fixed rack, the driven gear is connected with the large gear through the one-way ratchet device, and the magnetic rod is connected with the large gear and rotates along with the large gear.
According to the technical scheme, a small gear is meshed on one side of a large gear, a magnetic rod is connected to the small gear, the magnetic rod on the large gear is a first magnetic rod, the magnetic rod on the small gear is a second magnetic rod, each driving transmission mechanism is correspondingly provided with two air push plate cavities which are distributed up and down, and the first magnetic rod and the second magnetic rod respectively attract the magnetic push plates in the two air push plate cavities;
the number of the driving transmission mechanisms is two, the driving transmission mechanisms are respectively arranged on two sides of the rectification cutoff air supply pipe, and each driving transmission mechanism is correspondingly provided with two air push plate cavities;
the fixed rack in one drive transmission mechanism is arranged downwards above the corresponding driven gear, and the fixed rack in the other drive transmission mechanism is arranged upwards below the corresponding driven gear.
According to the technical scheme, the magnetic rod comprises a remote rod, the magnetic contact is arranged at one end of the rocker, the other end of the rocker is connected with a spring cavity, and a spring is arranged in the spring cavity; the inner wall of the clockwork spring cavity is provided with a clockwork spring compression block which props against one end of the clockwork spring, the large gear is arranged on the rectification cutoff air supply pipe through a rotating shaft, and the other end of the clockwork spring is connected with the rotating shaft.
According to the technical scheme, a convergence flow channel, an integration flow channel and a conical amplification flow channel are sequentially arranged between each air push plate cavity and the inner cavity main flow channel of the rectification cutoff air supply pipe, and a rectifier is arranged at the outlet of the integration flow channel.
The invention has the following beneficial effects:
1. the invention leads the vortex ring structure to be more stable and leads the vortex ring propagation path to be more accurate, the conventional vortex ring device is only provided with the honeycomb rectifying plate, the honeycomb rectifying plate can only reduce the transverse turbulent flow in the vortex ring generation process, and the speed difference of the axial air flow along the propagation path can not be solved, thus leading the air generating the vortex ring not to be uniform columnar air flow, but to be wedge-shaped air flow with high speed and low speed at one side, reducing the stability of the vortex ring, and leading the vortex ring to be skewed and inclined in the propagation process and leading the propagation path to be uncontrollable. This technical scheme is in the twinkling of an eye that the dynamic air current is cuted in the production, and rectification air push pedal generating device corresponds produces a high-speed even air push pedal, and the speed of air push pedal is higher than the minimum speed that cuts the air current, and then can reduce the axial velocity difference that cuts in the air current for the vortex ring structure is more complete.
2. The invention has higher vortex ring generation frequency: the existing intercepting type device only generates one vortex ring in a reciprocating motion period, the vortex ring generation frequency is relatively low, and the increase of the vortex ring generation frequency mainly depends on the increase of the intercepting speed, so that the equipment abrasion is aggravated and the noise is increased. According to the technical scheme, the outer wall of the tail end of the rectifying cutoff air supply pipe is provided with a group of air inlets, the middle part of the main air supply pipeline is also provided with a group of air inlets, and when the rectifying cutoff air supply pipe reciprocates in the main air supply pipeline, four vortex rings are generated in one motion cycle, so that the generation frequency of the vortex rings is greatly improved; the diameter of the air push plate cavity is far smaller than the diameter of the inner cavity of the main air supply pipe, so that more air push plate cavities can be arranged in a limited space, the frequency of generating air push plates can be improved by increasing the number of the air push plate cavities, the frequency generated by the small-diameter elastic membrane is also higher, and the rectification frequency is greatly improved. .
3. The invention has ingenious structural design: the elastic force generated by the elastic membrane during stretching is coupled with the magnetic force, and along with the distance extension, when the elastic force is greater than the magnetic force of the magnetic force rod on the magnetic push plate, the elastic membrane contracts at a high speed to enable air in the cavity to be pushed out, so that a high-speed uniform air push plate is generated. And when the magnetic rod is close to the magnetic push plate again in the next period, the magnetic rod is automatically attached to the magnetic push plate, and a complex combination mechanism design is not needed.
Drawings
FIG. 1 is a schematic view of an air-blowing device with a rectifier according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a rectifying and disconnecting device according to a first embodiment of the present invention;
FIG. 3 is a schematic view of the main supply duct according to the first embodiment of the present invention;
FIG. 4 is a schematic diagram of a magnetic pole according to one embodiment of the present invention;
FIG. 5 is a sectional view of a rectifying cutoff blower pipe according to a first embodiment of the present invention;
FIG. 6 is a schematic structural view of an air-blowing device with a rectifier according to a second embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a rectification air valve in the second embodiment of the invention;
FIG. 8 is a schematic structural diagram of an intake plate according to a second embodiment of the present invention;
FIG. 9 is a schematic structural view of a pneumatic valve according to a second embodiment of the present invention;
FIG. 10 is a schematic view illustrating the flow direction of air in the air-rectifying type blowing device under complicated conditions according to the first embodiment of the present invention;
FIG. 11 is a schematic view illustrating the flow direction of the air in the air-rectifying blower device under the complicated operating conditions according to the second embodiment of the present invention;
in the figure, 1-axial flow fan, 2-air inlet outer pipe, 3-air inlet inner pipe, 4-main air supply pipe, 5-driving motor, 6-driving gear, 7-driving rack, 8-rectifying cut-off air supply pipe, 9-honeycomb rectifying plate, 10-reducing nozzle, 11-fixed rack, 12-rectifier, 13-driven gear, 14-one-way ratchet, 15-pinion, 16-bull gear, 17-clockwork spring, 18-second magnetic rod, 19-first magnetic rod, 20-magnetic push plate, 21-two-way ratchet, 22-rectifying air valve, 23-air inlet plate, 24-pneumatic valve, 2401-wind shielding stress sheet, 2402-valve seat, 2403-limiting bulge and 25-compression spring;
401-motor installation cavity, 402-fixed rack support, 403-second air intake boundary, 404-first air intake boundary;
801-air push plate cavity, 802-rectification cut-off machine frame, 803-convergence flow channel, 804-integration flow channel, 805-conical amplification flow channel, 806-secondary cut-off air inlet, 807 first boundary, 808-second boundary and 809-third boundary;
1901-magnetic contact, 1902-rocker, 1903-clockwork spring compression block.
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples.
Referring to fig. 1 to 5, an air rectification type air supply device in an embodiment one of the present invention includes an axial flow fan 1, an air inlet pipe, a main air supply pipe 4 and a rectification cutoff device, where the rectification cutoff device includes a rectification cutoff air supply pipe 8, a push-pull driving mechanism and a rectification air push plate generating device, one end of the main air supply pipe 4 is sleeved in the air inlet pipe, the other end of the main air supply pipe extends out of the air inlet pipe, the rectification cutoff air supply pipe 8 is sleeved in the main air supply pipe 4, and the push-pull driving mechanism is connected with the rectification cutoff air supply pipe 8 to drive the rectification cutoff air supply pipe 8 to move back and forth along an axial direction;
the pipe wall of the air inlet pipe is provided with an interlayer, the axial flow fan 1 is arranged at an interlayer air inlet at one end of the air inlet pipe, the other end of the air inlet pipe is provided with an annular air outlet, the annular air outlet of the air inlet pipe is butted with an annular air inlet on the side wall of the main air supply pipe 4, the outer end of the main air supply pipe 4 is provided with an air outlet and is connected with the gradually-reduced nozzle 10;
the rectification air push plate generating device is arranged at the tail end of the rectification cutoff air supply pipe 8, the head end of the rectification cutoff air supply pipe 8 is open, the head end of the rectification cutoff air supply pipe 8 is closer to an air outlet of the main air supply pipe 4 than the tail end of the rectification cutoff air supply pipe 8, an annular secondary cutoff air inlet is arranged on the side wall of the rectification cutoff air supply pipe 8, and the secondary cutoff air inlet moves back and forth along with the rectification cutoff air supply pipe 8 and is staggered or butted with the annular air inlet; the push-pull driving mechanism drives the rectification cut-off blast pipe 8 to move back and forth along the axial direction, when the secondary cut-off air inlet is staggered with the annular air inlet on the side wall of the main blast pipe 4, the annular air inlet is blocked and closed by the pipe wall of the rectification cut-off blast pipe 8, and the passage of airflow entering the main blast pipe 4 from the air inlet pipe is cut off; when the secondary cut-off air inlet is in butt joint with the annular air inlet on the side wall of the main air supply pipe 4, the axial flow fan 1 sucks external air flow into the air inlet pipe interlayer, then the external air flow enters the rectification cut-off air supply pipe 8 through the annular air outlet of the air inlet pipe, the annular air inlet of the main air supply pipe 4 and the rectification cut-off air supply pipe 8, and meets an air push plate generated by a rectification air push plate generating device, and the air push plate axially rectifies the air flow entering from the air inlet pipe; the push-pull driving mechanism drives the rectification cut-off blast pipe 8 to move back and forth along the axial direction, so that the secondary cut-off air inlet and the annular air inlet on the side wall of the main blast pipe 4 can be repeatedly staggered or butted, the frequency of generating the vortex ring can be improved, and the rectification air push plate generates the device.
Further, the intake pipe includes outer tube 2 and the inner tube 3 that admits air, and the outer tube that admits air is located to the inner tube 3 cover of admitting air, and the inner tube that admits air is located to the one end cover of main blast pipe 4.
Furthermore, the sleeved end of the air inlet pipe and the main air supply pipe 4 is in a frustum shape; namely, the air outlet ends of the air inlet outer pipe and the air inlet inner pipe are both in a frustum shape, so that the air flow in the interlayer gradually shrinks and flows to the air outlet of the main air supply pipe 4 through the annular air inlet.
Furthermore, the annular air inlet consists of a plurality of arc-shaped openings which are distributed at intervals along the circumferential direction of the main air supply pipe 4, and a rectification air valve 22 is arranged at each arc-shaped opening on the main air supply pipe 4;
rectification pneumatic valve 22 includes arc inlet plate 23, arc inlet plate 23 sets up on the outer wall of main blast pipe 4, there are a plurality of inlet ports along arc length direction interval arrangement on the arc inlet plate 23, all correspond on every inlet port and be equipped with a pneumatic valve 24, be connected with compression spring between pneumatic valve 24 and the arc inlet plate 23, pneumatic valve 24 is including keeping out the wind atress piece 2401 and disk seat, the disk seat sets up in the inlet port, the disk seat is back taper or back taper platform shape, the upper end of disk seat is located to the downthehole air current flow direction slope of air inlet pipe clamp dorsad by the atress piece 2401 that keeps out the wind, the outer wall of disk seat is equipped with spacing arch.
Further, a honeycomb rectifying plate 9 is arranged between the reducing nozzle 10 and the main blast pipe 4.
Furthermore, the push-pull driving mechanism comprises a driving motor 5, a driving gear 6 and a driving rack 7, the driving rack 7 is embedded in the outer wall of the rectification cutoff air supply pipe 8 along the axial direction, the driving motor 5 is fixedly arranged on an air inlet inner pipe of the air inlet pipe, and the driving gear 6 is connected with an output shaft of the driving motor 5 and meshed with the driving rack 7; the driving motor 5 drives the driving gear 6 to rotate, and the driving gear 6 drives the rectification blocking air supply pipe 8 to move back and forth along the axial direction through the driving rack 7.
Further, the rectification air push plate generating device comprises an air push plate cavity, a magnetic push plate 20, a magnetic rod and a driving transmission mechanism, wherein the air push plate cavity is arranged at the tail end of the rectification cutoff air supply pipe 8 and is communicated with a main flow channel of an inner cavity of the rectification cutoff air supply pipe 8, an elastic die is arranged in the air push plate cavity, the magnetic push plate 20 is arranged on the elastic film, the magnetic rod is arranged on the outer sides of the elastic film and the magnetic push plate 20, the driving transmission mechanism is connected with the magnetic rod, and a magnetic contact is arranged on the rod head of the magnetic rod; the driving transmission mechanism drives the magnetic force rod to act, the magnetic force rod is attracted with the magnetic force push plate 20 through the magnetic contact, the elastic membrane is driven to be repeatedly pulled outwards and rebounded, and an air push plate is formed in the rectifying cutoff air supply pipe 8.
Further, the driving transmission mechanism comprises a fixed rack 11, a driven gear 13, a one-way ratchet device and a large gear 16, the large gear 16 is erected on the tail end of the rectification cutoff air supply pipe 8 through the rectification cutoff machine, the fixed rack 11 is fixedly arranged on the main air supply pipe 4 through a fixed rack bracket 402, the driven gear 13 is meshed with the fixed rack 11, the driven gear 13 is connected with the large gear 16 through the one-way ratchet device, and a magnetic rod is connected with the large gear 16 and rotates along with the large gear 16; the rectification cut-off blast pipe 8 moves back and forth along the axial direction and moves relative to the fixed rack 11, the fixed rack 11 drives the driven gear 13 to rotate, the driven gear 13 drives the magnetic force rod to rotate along with the large gear 16 in a single direction through the one-way ratchet, and the magnetic force rod is enabled to be intermittently attracted to the magnetic force push plate 20 through the magnetic force contact.
Furthermore, a pinion 15 is meshed with one side of a large gear 16, a magnetic rod is connected to the pinion 15, the magnetic rod on the large gear 16 is a first magnetic rod 19, the magnetic rod on the pinion 15 is a second magnetic rod 18, each driving transmission mechanism is correspondingly provided with two air push plate cavities which are distributed up and down, the first magnetic rod 19 and the second magnetic rod 18 respectively attract the magnetic push plates 20 in the two air push plate cavities, the magnetic contact of the first magnetic rod 19 is arranged upwards, and the magnetic contact of the second magnetic rod 18 is arranged downwards;
the number of the driving transmission mechanisms is two, the driving transmission mechanisms are respectively arranged on two sides of the rectification cutoff air supply pipe 8, and each driving transmission mechanism is correspondingly provided with two air push plate cavities; the diameter in air push pedal chamber is far less than the inner chamber diameter of main blast pipe to can set up more air push pedal chambers in limited space, not only can improve the frequency that produces the air push pedal through the number that improves air push pedal chamber, and the frequency that the elastic membrane of minor diameter produced is also higher, has improved the rectification frequency greatly.
The fixed rack gear 11 in one drive transmission mechanism is disposed downward above the corresponding driven gear, and the fixed rack gear 11 in the other drive transmission mechanism is disposed upward below the corresponding driven gear.
Furthermore, the one-way ratchets in the two driving transmission mechanisms are respectively a first one-way ratchet device and a second one-way ratchet device.
Further, the magnetic rod comprises a remote rod 1902, the magnetic contact is arranged at one end of the rocker, the other end of the rocker is connected with a spring cavity, and a spring 17 is arranged in the spring cavity; a clockwork spring compression block 1903 is arranged on the inner wall of the clockwork chamber, the clockwork spring compression block 1903 abuts against one end of the clockwork spring, the large gear 16 is arranged on the rectification cutoff air supply pipe 8 through a rotating shaft, and the other end of the clockwork spring is connected with the rotating shaft; the rectification cuts the blast pipe 8 and removes to one end, fixed rack 11 drives driven gear forward rotation, driven gear drives gear wheel 16 and the one-way corotation of magnetic force pole through one-way ratchet, make the magnetic force pole pass through magnetic force contact actuation magnetic force push pedal and move backward, after the magnetic force pole rotated certain angle stroke, clockwork spring was compressed, the rectification cuts the blast pipe 8 and removes to the other end, fixed rack 11 drives driven gear reverse rotation, gear wheel 16 does not rotate along with the driven gear, clockwork spring release drives magnetic force pole reverse rotation, make the magnetic force push pedal move forward.
Furthermore, a convergence channel 803, an integration channel 804 and a conical amplification channel are sequentially arranged between each air push plate cavity and the main channel of the inner cavity of the rectification cutoff air supply pipe 8, and a rectifier 12 is arranged at the outlet of the integration channel 804.
Furthermore, the annular air outlet, the annular air inlet and the secondary cut-off air inlet are all composed of a plurality of arc-shaped openings which are distributed at intervals along the circumferential direction.
The inner diameter of the air push plate cavity is much smaller than that of the rectification cutoff air supply pipe 8.
The working principle of the invention is as follows: referring to fig. 1, in an initial state of the air rectification type air supply device provided by the present invention, an axial flow fan 1 pumps external air into an interlayer flow channel between an air inlet outer tube 2 and an air inlet inner tube 3, and the external air enters a main air supply tube 4 from an air inlet formed by a first air inlet boundary 404 and a second air inlet boundary 403.
When the axial flow fan 1 pumps the outside air into the device, the driving motor 5 fixed in the motor installation cavity 401 at the top of the main blast pipe 4 moves to transmit the torque to the driving gear 6, and then the driving rack 7 meshed with the driving gear 6 and installed at the top of the rectification cutoff blast pipe 8 is driven, and then the rectification cutoff blast pipe 8 is driven to reciprocate along the inner wall of the main blast pipe 4, in the process, the rectification cutoff blast pipe 8 firstly closes the air inlet formed by the first air inlet boundary 404 and the second air inlet boundary 403, and finishes the first air flow cutoff, and meanwhile, as the fixed rack 11 is fixedly connected with the fixed rack bracket 402 of the main blast pipe 4, in the process of the movement of the rectification cutoff blast pipe 8, the driven gear 13 moves on the fixed rack 11 in a meshing manner, the fixed rack 11 is divided into a fixed rack and a fixed rack, the fixed rack is arranged at the top of the driven gear, the second fixed rack is arranged at the bottom of the second driven gear 13 to ensure that the rectifying cutoff air supply pipe 8 moves forwards or backwards, the elastic film of the air push plate cavity is in a stretched motion trend, the first driven gear and the second driven gear are opposite in rotation direction and are matched with the one-way ratchet 14, the driven gear 13 transfers the motion to the rotating shaft, the first one-way ratchet 14 is arranged in the middle of the rotating shaft, the first one-way ratchet 14 only allows the transmission of anticlockwise torque generated when the driven gear moves forwards, the torque is transmitted to the large gear 16 to further drive the small gear 15 meshed with the large gear 16, and in the rotation process of the large gear 16, the clockwork spring compression block 1903 in the first magnetic rod 19 compresses the clockwork spring 17, and simultaneously the second magnetic rod 18 and the first magnetic rod 19 swing backwards, the magnetic contact 1901 attracts the magnetic push plate 20 to stretch backward, the elastic membrane sealed between the magnetic push plate 20 and the air push plate cavity 801 is stretched, and since the second magnetic rod 18 and the first magnetic rod 19 are driven by the pinion 15 and the bull gear 16 respectively, the speed of the second magnetic rod 18 stretching the elastic membrane backward per unit time is faster than that of the first magnetic rod 19. Since the one-way ratchet wheel 21 of the second number only allows the clockwise torque to be transmitted, the two magnetic levers on the left side are not operated at the home position at this time.
In practical engineering, since the rectifying cutoff blower 8 is a continuous process rather than an instant process when cutting off the air flow, as the air inlet formed by the first air inlet boundary 404 and the second air inlet boundary 403 is reduced, the air flow speed entering the main blower 4 is different, and transverse turbulence and speed difference in propagation direction are generated. When the first boundary 806 of the rectifying and intercepting blast pipe 8 is overlapped with the second air inlet boundary 403 on the main blast pipe 4, the first interception is completed, meanwhile, the magnetic force generated by the adsorption of the second magnetic rod 18 and the magnetic push plate 20 is the same as the elastic force generated when the elastic membrane is generated, the elastic force at the next moment is greater than the magnetic force mutually adsorbed, so that the static air in the air push plate cavity 801 corresponding to the second magnetic rod 18 is pushed by the magnetic push plate 20 at a high speed, the accelerated uniform air flow sequentially passes through the converging flow channel 803 and the integrating flow channel 804, passes through the rectifier 12 at the outlet of the integrating flow channel 804, so that the high-speed concentrated air flow column is uniformly diffused, and is diffused into a uniform air push plate with the same size as the inner diameter of the rectifying and intercepting blast pipe 8 in the conical amplification flow channel 805, the speed of the air push plate is greater than the lowest speed of the intercepted air flow and less than the highest speed of the intercepted air flow, so that the intercepted air flow rectified by the air push plate has a speed difference in the propagation direction smaller than the non-rectified intercepted air flow, the uniformity is higher, and the effect of generating a vortex is better. The cut-off airflow rectified by the air push plate reduces the influence of transverse turbulent flow when passing through the honeycomb rectifying plate 9, and the gradually-reduced nozzle 10 is curled to generate vortex ring to enter the external environment.
Since the rectifying cutoff blower 8 is still moving forward, when the second boundary 808 coincides with the second air inlet boundary 403, the air inlet is opened for the second time, and the air enters the main blower 4 again, and the second cutoff vortex ring starts to be generated. When the third boundary 809 coincides with the second air inlet boundary 403, the air flow is cut off for the second time, and at the same time, the magnetic force generated by the first magnetic rod 19 and the magnetic push plate 20 are attracted and the elastic force generated when the elastic membrane is generated is the same, and the elastic force at the next moment is greater than the magnetic force attracted to each other, so that the stationary air in the air push plate cavity 801 corresponding to the first magnetic rod 19 is pushed by the magnetic push plate 20 at a high speed, the accelerated uniform air flow path and process are the same as above, and the generated air push plate rectifies the second cut-off air flow.
After that, the driving motor 5 is reversely rotated, the rectifying and intercepting blast pipe 8 moves backward, and the air inlet formed by the first air inlet boundary 404 and the second air inlet boundary 403 is opened and closed again by the first boundary 807, the second boundary 808 and the third boundary 809 of the rectifying and intercepting blast pipe 8. Two truncated vortex rings are generated. Due to the existence of the one-way ratchet device, the corresponding side of the second one-way ratchet device 21 starts to transmit torque at this time, and the working process of the second magnetic rod and the first magnetic rod is the same as that described above. Although the first unidirectional ratchet 14 does not transmit torque at this time, when the rectifying cutoff air supply pipe 8 moves forward, the clockwork spring compression block 1903 in the first magnetic rod 19 continuously compresses the clockwork spring 17, so that the clockwork spring 17 releases energy at this time, and the second magnetic rod 18 and the first magnetic rod 19 return to the original positions, that is, the first magnetic rod 19 and the second magnetic rod 18 are close to the air push plate cavity 801, so that the magnetic contact of the magnetic rods and the magnetic push plate attract each other at this time to prepare for the next forward movement of the rectifying cutoff air supply pipe 8.
Without the rectifier 12, since the inner diameter of the air push plate cavity 801 is much smaller than the inner diameter of the rectifying cutoff blast pipe 8, the high-speed airflow generated by the second magnetic rod 18 may not spread into a uniform air push plate in the tapered amplification flow channel 805, but in the form of a high-speed airflow column, break through the front cutoff airflow and disturb the front cutoff airflow, and the generated vortex ring is a disturbing vortex ring instead of a cutoff vortex ring or a piston push plate.
As shown in fig. 6-9, the second embodiment of the air-rectifying type air supply device provided by the present invention is mainly different from the first embodiment in that the annular air inlet is composed of a plurality of arc-shaped openings distributed at intervals along the circumferential direction of the main air supply pipe, and each arc-shaped opening on the main air supply pipe is provided with a rectifying air valve 22; rectifier air valve 22 includes arc air inlet plate 23, arc air inlet plate 23 sets up on the outer wall of main blast pipe, there are a plurality of inlet ports along arc length direction interval arrangement on the arc air inlet plate 23, every inlet port all corresponds and is equipped with a pneumatic valve 24, pneumatic valve 24 is including keeping out the wind atress piece 2401 and disk seat 2402, disk seat 2402 sets up in the inlet port, the disk seat is back taper or back taper platform shape, be connected with compression spring between every disk seat 2402 and the corresponding arc air inlet plate 23, keep out the wind atress piece 2401 and locate the upper end of disk seat to the slope of inlet pipe clamp in situ air current flow direction, the outer wall of disk seat is equipped with spacing arch 2403, spacing bellied number is a plurality of, along disk seat circumference evenly distributed.
Furthermore, the number of the arc-shaped openings on the main air supply pipe is 4-6.
When the wind speed exceeds a certain threshold, along with the increase of the wind speed, the larger the acting force acting on the wind shielding stress piece 2401 is, the pneumatic valve 24 is enabled to downwards compress the spring 25, the gap between the air inlet hole on the air inlet plate 23 and the valve seat of the pneumatic valve 24 is further reduced, the wind resistance is increased, the air inlet hole air inlet speed is reduced, the air flows of the four air inlets are relatively uniform, as shown in fig. 11, the phenomenon that the speed of one air inlet is too high under a complex working condition, as shown in fig. 10, the side with low impact wind speed is avoided, and the air flows in the air inlet pipeline are seriously uneven is avoided; the air push plate is matched with the rectification air valve 22 to realize uniformity of air flow in the main air supply pipeline, if the rectification air valve 22 is not arranged, one side of the air inlet pipeline is strong, so that air flow exists on one side in the pipeline, and when the air flow on the other side is weak, the rectification effect of the air push plate is not ideal.
The effect of the spacing arch 2403 that the disk seat outer wall set up prevents that the air current is too big, leads to rectifier 12 to close completely, and spacing arch 2403's design makes no matter how big air current can guarantee to leave the clearance between disk seat and the inlet port all the time in the inlet tube, guarantees that this rectifier 12 has a minimum aperture, and otherwise four air inlets have the complete closure of an air inlet, not only do not have the rectification effect, has aggravated the inhomogeneity on the contrary more.
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 rectification type air supply device is characterized by comprising an axial flow fan, an air inlet pipe, a main air supply pipe, a rectification cut-off air supply pipe, a push-pull driving mechanism and a rectification air push plate generating device, wherein one end of the main air supply pipe is sleeved in the air inlet pipe, the rectification cut-off air supply pipe is sleeved in the main air supply pipe, and the push-pull driving mechanism is connected with the rectification cut-off air supply pipe to drive the rectification cut-off air supply pipe to move back and forth along the axial direction;
the pipe wall of the air inlet pipe is provided with an interlayer, the axial flow fan is arranged at an interlayer air inlet at one end of the air inlet pipe, the other end of the air inlet pipe is provided with an annular air outlet, the annular air outlet of the air inlet pipe is butted with an annular air inlet on the side wall of the main air supply pipe, and the outer end of the main air supply pipe is provided with an air outlet and connected with a gradually-reduced nozzle;
the rectification air push plate generating device is arranged at the tail end of the rectification cutoff blast pipe, the head end of the rectification cutoff blast pipe is open, an annular secondary cutoff air inlet is formed in the side wall of the rectification cutoff blast pipe, and the secondary cutoff air inlet moves back and forth along with the rectification cutoff blast pipe and is staggered or butted with the annular air inlet;
the push-pull driving mechanism drives the rectification cut-off blast pipe to move back and forth along the axial direction, when the secondary cut-off air inlet is staggered with the annular air inlet on the side wall of the main blast pipe, the annular air inlet is blocked and closed by the pipe wall of the rectification cut-off blast pipe, and the air flow enters the passage of the main blast pipe from the air inlet pipe and is cut off; when the secondary cut-off air inlet is in butt joint with the annular air inlet in the side wall of the main air supply pipe, the axial flow fan sucks external air flow into the air inlet pipe interlayer, then the external air flow enters the rectification cut-off air supply pipe through the annular air outlet of the air inlet pipe, the annular air inlet of the main air supply pipe and the rectification cut-off air supply pipe, and meets an air push plate generated by a rectification air push plate generating device, and the air push plate axially rectifies the air flow entering from the air inlet pipe;
rectification air push pedal apparatus for producing includes air push pedal chamber, magnetic force push pedal, magnetic force pole and drive transmission mechanism, and the air push pedal chamber sets up in the rectification and cuts the tail end of blast pipe, cuts the inner chamber sprue intercommunication of blast pipe with the rectification, and the air push pedal intracavity is provided with the elastic membrane, and the magnetic force push pedal sets up on the elastic membrane, and the magnetic force pole sets up in the outside of elastic membrane and magnetic force push pedal, and drive transmission mechanism is connected with the magnetic force pole, is equipped with the magnetic force contact on the pole head of magnetic force pole.
2. The air rectification type air supply device according to claim 1, wherein the air inlet pipe comprises an air inlet outer pipe and an air inlet inner pipe, the air inlet inner pipe is sleeved in the air inlet outer pipe, and one end of the main air supply pipe is sleeved in the air inlet inner pipe;
the sleeved end of the air inlet pipe and the main air supply pipe is in a frustum shape.
3. The air rectification type air supply device as claimed in claim 1, wherein the annular air inlet is composed of a plurality of arc-shaped openings which are distributed at intervals along the circumferential direction of the main air supply pipe, and each arc-shaped opening on the main air supply pipe is provided with a rectification air valve;
the rectification pneumatic valve includes the arc air inlet plate, the arc air inlet plate sets up on main blast pipe's outer wall, there are a plurality of inlet ports along arc length direction interval arrangement on the arc air inlet plate, all correspond on every inlet port and be equipped with a pneumatic valve, be connected with compression spring between pneumatic valve and the arc air inlet plate, pneumatic valve is including keeping out the wind atress piece and disk seat, the disk seat sets up in the inlet port, the disk seat is back taper or back taper platform shape, the upper end of disk seat is located to the slope of the interior air current flow direction of inlet pipe clamp dorsad stress piece that keeps out the wind, the outer wall of disk seat is equipped with spacing arch.
4. The air rectification type air supply device as claimed in claim 1, wherein the push-pull driving mechanism comprises a driving motor, a driving gear and a driving rack, the driving rack is arranged on the outer wall of the rectification cutoff air supply pipe, the driving motor is fixedly arranged on the air inlet inner pipe of the air inlet pipe, and the driving gear is connected with an output shaft of the driving motor and meshed with the driving rack; the driving motor drives the driving gear to rotate, and the driving gear drives the rectifying cutoff air supply pipe to move back and forth along the axial direction through the driving rack.
5. The air-rectifying type blowing device according to claim 1, wherein the driving transmission mechanism includes a fixed rack, a driven gear, a one-way ratchet, and a large gear, the large gear is disposed on the rectifying cutoff blowing pipe, the fixed rack is fixedly disposed on the main blowing pipe, the driven gear is engaged with the fixed rack, the driven gear is connected to the large gear through the one-way ratchet, and the magnetic rod is connected to the large gear and rotates with the large gear.
6. The air rectification type air supply device as claimed in claim 5, wherein one side of the large gear is engaged with a small gear, the small gear is connected with a magnetic rod, the magnetic rod on the large gear is a first magnetic rod, the magnetic rod on the small gear is a second magnetic rod, each driving transmission mechanism is correspondingly provided with two air push plate cavities distributed up and down, and the first magnetic rod and the second magnetic rod respectively attract the magnetic push plates in the two air push plate cavities;
the number of the driving transmission mechanisms is two, the driving transmission mechanisms are respectively arranged on two sides of the rectification cutoff air supply pipe, and each driving transmission mechanism is correspondingly provided with two air push plate cavities;
the fixed rack in one drive transmission mechanism is arranged downwards above the corresponding driven gear, and the fixed rack in the other drive transmission mechanism is arranged upwards below the corresponding driven gear.
7. An air rectification type air supply device according to claim 5, characterized in that the magnetic rod comprises a remote rod, the magnetic contact is arranged at one end of the rocker, the other end of the rocker is connected with a spring cavity, and a spring is arranged in the spring cavity; the inner wall of the clockwork spring cavity is provided with a clockwork spring compression block which props against one end of the clockwork spring, the large gear is arranged on the rectification cutoff air supply pipe through a rotating shaft, and the other end of the clockwork spring is connected with the rotating shaft.
8. The air rectification type air supply device as claimed in claim 6, wherein a converging flow passage, an integrating flow passage and a conical amplifying flow passage are sequentially arranged between each air push plate cavity and an inner cavity main flow passage of the rectification cutoff air supply pipe, and a rectifier is arranged at an outlet of the integrating flow passage; a honeycomb rectifying plate is arranged between the reducing nozzle and the main blast pipe.
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| CN202210696705.6A CN115126706B (en) | 2022-06-20 | 2022-06-20 | Air rectification type air supply device |
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| CN202210696705.6A CN115126706B (en) | 2022-06-20 | 2022-06-20 | Air rectification type air supply device |
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| CN115126706B true CN115126706B (en) | 2023-03-24 |
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| CN117167331B (en) * | 2023-09-13 | 2024-03-08 | 武汉理工大学 | High homogeneity air supply arrangement |
| CN117514867B (en) * | 2023-12-04 | 2024-04-30 | 武汉理工大学 | Flexible hybrid air supply device based on electromagnetic drive |
| CN117685252B (en) * | 2023-12-18 | 2024-08-13 | 武汉理工大学 | Adjustable air supply device |
| CN118009518B (en) * | 2024-04-08 | 2024-06-04 | 武汉理工大学 | High-speed cut-off type air conditioner air supply device |
| CN118208770B (en) * | 2024-05-20 | 2024-07-23 | 武汉理工大学 | Air conditioner air supply auxiliary device |
| CN118242759B (en) * | 2024-05-29 | 2024-08-06 | 武汉理工大学 | Electromagnetic disturbance type vortex ring air supply device |
| CN118328486B (en) * | 2024-06-12 | 2024-08-06 | 武汉理工大学 | Rotary air supply equipment |
| CN118391766B (en) * | 2024-06-28 | 2024-08-27 | 福建德绿新材料科技有限公司 | Ventilation device for producing fully-degradable material |
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| JP4808239B2 (en) * | 2008-08-29 | 2011-11-02 | 三菱電機株式会社 | Humidifier and air conditioner |
| CN109945288B (en) * | 2019-03-29 | 2020-01-31 | 武汉理工大学 | convection heat exchange device based on vortex ring low-speed circulation air supply |
| CN111412203B (en) * | 2020-03-16 | 2021-01-19 | 武汉理工大学 | Hydraulic drive-based section mutation double-cavity vortex ring exciter |
| CN113048542A (en) * | 2021-03-29 | 2021-06-29 | 武汉理工大学 | Air supply heater capable of adjusting wind direction |
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