CN116025584A - Petal type rotary variable-diameter adjusting door of ventilator and adjusting method - Google Patents
Petal type rotary variable-diameter adjusting door of ventilator and adjusting method Download PDFInfo
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- CN116025584A CN116025584A CN202310105596.0A CN202310105596A CN116025584A CN 116025584 A CN116025584 A CN 116025584A CN 202310105596 A CN202310105596 A CN 202310105596A CN 116025584 A CN116025584 A CN 116025584A
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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
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- 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
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Abstract
The invention relates to the technical field of ventilators, in particular to a petal type rotary variable-diameter adjusting door of a ventilator and an adjusting method. The telescopic flap is movably arranged between the front end flange and the rear end flange, the front end flange and the rear end flange are fixedly connected through connecting bolts arranged at the edges, the side edges of two adjacent telescopic flaps are tightly attached together, a rotary driving plate is rotatably arranged between the telescopic flap and the rear end flange, and the telescopic flap is slidably arranged along a fixed limit groove and a rotary limit groove through a limit shaft. There is no cone core in this rotatory reducing regulating gate dryer of ventilation blower petal formula, can guarantee that the air current passes through when the regulating gate is opened and have no hindrance, and ventilation efficiency compares in traditional regulating gate has obvious improvement, and the cooperation is inseparable between the adjacent flexible lamella, does not need to reserve the activity surplus, can realize furthest's sealing function when the regulating gate is closed.
Description
Technical Field
The invention relates to the technical field of ventilators, in particular to a petal type rotary variable-diameter adjusting door of a ventilator and an adjusting method.
Background
According to different using conditions of the ventilator, requirements in the using process and the like, most ventilators need to expand the using range and improve the adjusting performance, and an inlet flow director, namely a damper, needs to be arranged at the front end of a fan collector or in a flow channel of an air inlet box, so that the inlet airflow flow or inlet wind pressure of the fan can be changed by changing the opening of a throttle baffle, and the operation effect of the fan can be indirectly changed.
The common conventional regulating door comprises an air duct, a cone positioned at the center of the air duct, a supporting rod for connecting the air duct with a cone core, a blade, a transmission notch mechanism, a rotating ring, a connecting mechanism and the like, wherein the blade is arc-shaped, the arc end is connected with the transmission notch structure, the sharp corner end is connected with the cone core, when the rotating ring connected to the notch mechanism is rotated, the blade is driven to rotate towards the direction perpendicular to the section of the air duct, and the blade forms an inclination angle gap to enable air flow to pass through, so that the effect of changing the air inlet area of the regulating door is achieved.
The existing regulating door is required to be provided with a cone core body, the passing wind flow is seriously blocked, when the regulating door is in a closed state, gaps among blades are large, the sealing effect is poor, air leakage is serious, and in addition, the width of the existing regulating door is large, so that the axial size of the ventilator is greatly limited.
Disclosure of Invention
The invention provides a petal-type rotary variable-diameter adjusting door of a ventilator and an adjusting method thereof, aiming at solving the problems of complex structure, poor sealing and obvious wind blocking effect of the existing adjusting door.
On one hand, the petal type rotary diameter-changing adjusting door of the ventilator provided by the invention adopts the following technical scheme:
the utility model provides a ventilation blower petal type rotatory reducing regulating door and adjustment method, includes front end flange, rear end flange and flexible lamella, flexible lamella movable mounting is between front end flange and rear end flange, front end flange and rear end flange pass through the connecting bolt connection of edge installation and fix, and adjacent two flexible lamella side is hugged closely together, it is provided with the rotation driver plate to rotate between flexible lamella and the rear end flange, it has fixed spacing groove to open on the front end flange, it has rotation spacing groove to open on the rotation driver plate, flexible lamella is through spacing axle along fixed spacing groove and rotation spacing groove slip setting.
Through adopting above-mentioned technical scheme, flexible activity between front end flange and rear end flange through flexible lamella realizes the cross sectional area size control to front end flange and rear end flange center through-hole to the flow size of control ventilation blower through the wind, flexible lamella removes along the fixed spacing groove on the front end flange, and utilizes the rotation spacing groove application of force on the rotation driver plate to realize removing, adjacent two flexible lamella side is hugged closely together effectively prevents the blow-by phenomenon and wind pressure to flexible lamella, reduces flexible lamella because wind-force rupture.
Preferably, the fixed limit groove and the rotary limit groove are respectively arranged along the chord lines of the front end flange and the rotary dial, and the fixed limit groove and the rotary limit groove are symmetrically arranged along the diameter line of the front end flange or the rotary dial.
Through adopting above-mentioned technical scheme, fixed spacing groove and rotation spacing groove set up along the chordal line of front end flange and rotation driver plate respectively, can guarantee that flexible lamella direction of movement and atress direction can not be perpendicular, and the slope atress is favorable to flexible lamella even movement, prevents uneven unable shrink of atress.
Preferably, the telescopic flap is triangular or fan-shaped, a sliding tenon block is arranged on one side of the telescopic flap, a sliding tenon groove is arranged on the other side of the telescopic flap, the sliding tenon blocks and the sliding tenon grooves of two adjacent telescopic flaps are mutually matched and slidably installed, and the sliding tenon block is a dovetail tenon block.
Through adopting above-mentioned technical scheme, triangle-shaped or fan-shaped satisfies the closure requirement, and the same shape can make the motion evenly transmit, connects two adjacent flexible lamella through slip tenon piece and slip tongue-and-groove for continuous two flexible lamella is closely laminated all the time limit and limit, forms firm whole, reduces the influence of bending of wind-force to single flexible lamella.
Preferably, the middle edges of the front end flange and the rear end flange are provided with auxiliary rollers, the auxiliary rollers are tightly attached to the rotary driving plate, the center of the rear end flange is provided with a sealing ring, and a central round hole of the rotary driving plate is sleeved on the sealing ring.
Through adopting above-mentioned technical scheme, auxiliary roller is used for outside installation fixed rotation driver plate, reduces simultaneously and rotates the rotatory frictional force of driver plate, and the sealing washer is used for inboard installation fixed rotation driver plate, and the sealing washer is favorable to sealed reduction ventilation to flow from rotating driver plate gap department simultaneously.
Preferably, the rear end flange is provided with a stirring limiting hole, the stirring limiting hole is an arc-shaped strip hole, a bulge is arranged on one surface of the rotary driving plate, which is clung to the rear end flange, and the bulge penetrates through the stirring limiting hole and is provided with a stirring buckle at the top.
Through adopting above-mentioned technical scheme, stir the knot through the knot and stir, manual control rotates the driver plate and rotates, realizes rotating the driver plate and controlling flexible lamella and remove.
Preferably, the rotary driving plate is connected with an arc-shaped rack through a bulge, the arc-shaped rack is connected with a servo motor through a motor gear, and a main shaft of the servo motor is rotatably arranged on the rear end flange through a rotating shaft seat.
Through adopting above-mentioned technical scheme, rotate the driver plate through servo motor control and rotate, realize the regulation of automated control ventilation volume.
On the other hand, the petal type rotary diameter-changing adjusting method for the ventilator provided by the invention adopts the following technical scheme:
a petal type rotary diameter-changing adjusting method of a ventilator comprises the following adjusting processes:
the front end flange and the rear end flange of the petal type rotary diameter-changing adjusting door are arranged in the middle of the ventilation pipe of the ventilator by bolts;
the blocking area of the telescopic flaps to the middle ventilation opening is controlled by adjusting the distance between the telescopic flaps which are mutually clung and the central axis of the middle ventilation opening;
according to the actual requirement on ventilation quantity, controlling the telescopic moving distance of the telescopic flap through a servo motor;
by scoring the derailment on the fixed front flange and the rotating rotary dial, the telescoping flaps move along the scored derailment as they telescope.
By adopting the technical scheme, traditional upset control is replaced by utilizing telescopic flap expansion control, the blocking effect of a ventilator adjusting device on ventilation is reduced, the telescopic flap is automatically controlled to move by utilizing a servo motor, the flux of the ventilator is automatically adjusted, the moving path of the telescopic flap is controlled by utilizing the track carved on the front end flange and the rotary driving plate, and the stable expansion and movement of the telescopic flap are realized.
Preferably, the front flange and the scribing track on the rotary driving plate are respectively a fixed limit groove and a rotary limit groove, the fixed limit groove is used for controlling the distance between the telescopic flap and the central axis of the ventilation opening, and the rotary limit groove is used for matching the fixed limit groove to move the telescopic flap and applying moving force to the telescopic flap.
Through adopting above-mentioned technical scheme, fixed spacing groove and rotation spacing groove are responsible for restricting the removal route, and rotation spacing groove is responsible for providing the turning force.
Preferably, the center line of the rotation limiting groove is always perpendicular to the moving direction of the telescopic flap.
Through adopting above-mentioned technical scheme, rotate spacing groove central line and flexible lamella direction of movement perpendicular all the time, guarantee that flexible lamella direction of movement is the same with the application of force direction, guarantee flexible lamella atress effective utilization, reduce the application of force requirement.
Preferably, a plurality of telescopic flaps are connected into a whole through mortise and tenon joint.
By adopting the technical scheme, the telescopic flap is integrally formed, so that the bending effect of wind force on a single telescopic flap is reduced.
In summary, the invention has the following beneficial technical effects:
1. the telescopic flap is flexibly moved between the front end flange and the rear end flange, so that the cross-sectional area of the central through holes of the front end flange and the rear end flange is controlled, the flow of the ventilator through wind is controlled, the telescopic flap moves along the fixed limiting groove on the front end flange, the movement is realized by utilizing the force applied by the rotating limiting groove on the rotating driving plate, and the side edges of the adjacent two telescopic flaps are tightly attached to each other, so that the air leakage phenomenon and the blowing force of wind pressure on the telescopic flaps are effectively prevented, and the breakage of the telescopic flaps due to wind force is reduced.
2. The fixed limiting groove and the rotary limiting groove are respectively arranged along the front end flange and the chord line of the rotary driving plate, the moving direction and the stress direction of the telescopic flaps can be guaranteed not to be vertical, the inclined stress is favorable for the uniform movement of the telescopic flaps, the uneven stress cannot be contracted, the triangle or the fan meets the closing requirement, the same shape can enable the movement to be uniformly transmitted, the two adjacent telescopic flaps are connected through the sliding tenon block and the sliding tenon groove, the two continuous telescopic flaps are tightly attached to each other all the time, a stable whole is formed, and the bending influence of wind force on the single telescopic flap is reduced.
3. The auxiliary roller is used for installing and fixing the rotary driving plate outside, reducing the rotary friction force of the rotary driving plate, the sealing ring is used for installing and fixing the rotary driving plate inside, the sealing ring is beneficial to sealing and reducing ventilation and flows out of a gap of the rotary driving plate, the rotary driving plate is manually controlled to rotate through a buckle, the rotary driving plate is rotated and the telescopic flap is controlled to move, the rotary driving plate is controlled to rotate through a servo motor, and the automatic control of ventilation quantity is adjusted.
4. Utilize flexible lamella flexible control to replace traditional upset control, reduce ventilation blower adjusting device and to the barrier effect of ventilation, utilize servo motor automatic control flexible lamella to remove, realize automatic adjustment ventilation blower flux, utilize the track control flexible lamella's that is carved out on front end flange and the rotation driver plate travel path, realize flexible lamella steady flexible and removal.
5. The fixed limiting groove and the rotating limiting groove are responsible for limiting a moving path, the rotating limiting groove is responsible for providing rotating force, the center line of the rotating limiting groove is always vertical to the moving direction of the telescopic flap, the moving direction of the telescopic flap is guaranteed to be the same as the force applying direction, the stress of the telescopic flap is guaranteed to be effectively utilized, the force applying requirement is reduced, and the telescopic flap is integrally formed to be beneficial to reducing the bending effect of wind force on a single telescopic flap.
6. The fan petal type rotary reducing adjusting door wind barrel is internally provided with the conical core body, when the adjusting door is opened, air flow can be guaranteed to pass through the conical core body without obstruction, ventilation efficiency is obviously improved compared with that of a traditional adjusting door, adjacent telescopic flaps are tightly matched without reserving movable allowance, the sealing function of the maximum limit can be realized when the adjusting door is closed, when the adjusting door is adjusted, the telescopic flaps are rotated perpendicular to the axial flow direction of the fan, the axial distance of the adjusting door is shortened, heat and kinetic energy loss during air flow passing are avoided, when the adjusting door is opened, the air passing port is enlarged from inside to outside and approximates to a circle concentric with the wind barrel, the opening direction of the adjusting door is not required to be considered, only the stirring buckling end is required to be kept away from the fan, the stirring buckling rotating direction is consistent with the rotating direction of the telescopic flaps, the direction of the driving notch is not required to change the direction, the friction and the kinetic energy loss of the driving mechanism are reduced, and the fan is more labor-saving in use.
Drawings
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a schematic view of the other view of FIG. 1;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is a schematic view of the telescoping flap of the present invention in an extended position;
FIG. 5 is a schematic view of the telescoping flap of the present invention in a contracted and consolidated state;
FIG. 6 is a schematic view of the telescoping flap retraction process state of the present invention;
fig. 7 is a schematic view of the structure of the telescopic flap of the present invention.
Reference numerals illustrate:
1. the device comprises a front flange cover, 10, a fixed limit groove, 11, connecting bolts, 12, an auxiliary roller, 2, a rear flange cover, 20, a stirring limit hole, 21, a rotating shaft seat, 22, a sealing ring, 3, a rotating drive plate, 30, a rotating limit groove, 31, an arc-shaped rack, 32, a stirring buckle, 4, a telescopic flap, 41, a limit shaft, 42, a sliding tenon block, 43, a sliding tenon groove, 5, a servo motor, 51 and a motor gear.
Detailed Description
The invention is described in further detail below with reference to fig. 1-6.
Example 1
The embodiment of the invention discloses a petal type rotary variable-diameter adjusting door of a ventilator, which comprises a front end flange 1, a rear end flange 2 and telescopic flaps 4, wherein the telescopic flaps 4 are movably arranged between the front end flange 1 and the rear end flange 2, the front end flange 1 and the rear end flange 2 are fixedly connected through connecting bolts 11 arranged at the edges, the side edges of two adjacent telescopic flaps 4 are tightly attached together, a rotary driving plate 3 is rotatably arranged between the telescopic flaps 4 and the rear end flange 2, a fixed limit groove 10 is formed in the front end flange 1, a rotary limit groove 30 is formed in the rotary driving plate 3, and the telescopic flaps 4 are slidably arranged along the fixed limit groove 10 and the rotary limit groove 30 through limit shafts 41.
The embodiment of example 1 is:
during installation, the front end flange 1 and the rear end flange 2 are respectively installed on a ventilator or a ventilating duct through bolts, and air tightness is detected.
When the air conditioner is used, the rotary driving plate 3 is rotated according to the requirement of an actual ventilation pipeline on the air quantity, the rotary driving plate 3 drives the telescopic flap 4 to move in a telescopic mode, the gap in the middle of the telescopic flap 4 is enlarged along with the extension of the telescopic flap 4, the ventilation quantity is increased, the gap in the middle of the telescopic flap 4 is reduced along with the contraction of the telescopic flap 4, the ventilation quantity is reduced, and the telescopic flap 4 always moves along the fixed limiting groove 10 and the rotary limiting groove 30 in the moving process.
Example 2
The addition of the following components is based on the embodiment 1:
referring to fig. 2 and 3, the fixed limit groove 10 and the rotation limit groove 30 are disposed along the chord lines of the front flange 1 and the rotation dial 3, respectively, and the fixed limit groove 10 and the rotation limit groove 30 are symmetrically disposed along the diameter line of the front flange 1 or the rotation dial 3.
Referring to fig. 3-7, the telescopic flaps 4 are triangular or fan-shaped, a sliding tenon block 42 is arranged on one side of each telescopic flap 4, a sliding tenon groove 43 is arranged on the other side of each telescopic flap, the sliding tenon blocks 42 and the sliding tenon grooves 43 of two adjacent telescopic flaps 4 are mutually matched and slidably mounted, and the sliding tenon blocks 42 are dovetail-shaped tenon blocks.
Referring to fig. 1-3, an auxiliary roller 12 is arranged at the middle edge of the front end flange 1 and the rear end flange 2, the auxiliary roller 12 is closely attached to the rotary driving plate 3, a sealing ring 22 is arranged at the center of the rear end flange 2, and a central round hole of the rotary driving plate 3 is sleeved on the sealing ring 22.
Referring to fig. 2 and 3, the rear end flange 2 is provided with a toggle limiting hole 20, the toggle limiting hole 20 is a circular arc-shaped strip hole, a protrusion is arranged on one surface of the rotary dial 3, which is clung to the rear end flange 2, and the protrusion passes through the toggle limiting hole 20 and is provided with a toggle button 32 at the top.
Referring to fig. 2 and 3, the rotary dial 3 is connected with an arc-shaped rack 31 through a protrusion, the arc-shaped rack 31 is connected with a servo motor 5 through a motor gear 51, and a main shaft of the servo motor 5 is rotatably mounted on the rear end flange 2 through a rotary shaft seat 21.
The embodiment of example 2 is:
according to the computer monitoring value or the preset value, the servo motor 5 is controlled to start and stop, so that the rotation of the rotary driving plate 3 and the movement of the telescopic flap 4 are automatically controlled.
Example 3
The embodiment of the invention discloses a petal type rotary diameter-changing adjusting method of a ventilator, which comprises the following adjusting processes:
the front end flange 1 and the rear end flange 2 of the petal type rotary diameter-changing adjusting door are arranged in the middle of a ventilation pipe of the ventilator by bolts;
the blocking area of the telescopic flaps 4 to the middle ventilation opening is controlled by adjusting the distance between the telescopic flaps 4 which are closely attached to each other and the central axis of the middle ventilation opening;
the telescopic moving distance of the telescopic flap 4 is controlled by the servo motor 5 according to the actual requirement on the ventilation quantity;
by scoring the track on the fixed front flange 1 and the rotating rotary dial 3, the telescoping flaps 4 move along the scored track as they telescope.
The front flange 1 and the rotary driving plate 3 are respectively provided with a fixed limit groove 10 and a rotary limit groove 30, the fixed limit groove 10 is used for controlling the distance between the telescopic flap 4 and the central axis of the vent, and the rotary limit groove 30 is used for matching the fixed limit groove 10 to move the position of the telescopic flap 4 and apply moving force to the telescopic flap 4.
The center line of the rotation limiting groove 30 is always perpendicular to the moving direction of the telescopic flap 4.
The telescopic petals 4 are connected into a whole through mortise and tenon joint.
The above embodiments are not intended to limit the scope of the present invention, so: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (10)
1. The utility model provides a rotatory reducing regulating door of ventilation blower petal formula which characterized in that: the telescopic flap piece (4) is movably arranged between the front end flange (1) and the rear end flange (2), and the front end flange (1) and the rear end flange (2) are fixedly connected through connecting bolts (11) arranged at the edges;
the side edges of two adjacent telescopic flaps (4) are tightly clung together;
a rotary driving plate (3) is rotatably arranged between the telescopic flap (4) and the rear end flange (2);
the front end flange (1) is provided with a fixed limit groove (10), the rotary drive plate (3) is provided with a rotary limit groove (30), and the telescopic flap (4) is arranged in a sliding mode along the fixed limit groove (10) and the rotary limit groove (30) through a limit shaft (41).
2. A ventilator petal rotary variable-diameter adjustment door as defined in claim 1, wherein: the fixed limit groove (10) and the rotary limit groove (30) are respectively arranged along the chord lines of the front end flange (1) and the rotary driving plate (3), and the fixed limit groove (10) and the rotary limit groove (30) are symmetrically arranged along the diameter line of the front end flange (1) or the rotary driving plate (3).
3. A ventilator petal rotary variable-diameter adjustment door as defined in claim 1, wherein: the telescopic petals (4) are triangular or fan-shaped, a sliding tenon block (42) is arranged on one side of each telescopic petal (4), a sliding tenon groove (43) is formed in the other side of each telescopic petal, the sliding tenon blocks (42) and the sliding tenon grooves (43) of two adjacent telescopic petals (4) are matched with each other to be installed in a sliding mode, and the sliding tenon blocks (42) are dovetail tenon blocks.
4. A ventilator petal rotary variable-diameter adjustment door as defined in claim 1, wherein: the novel rotary dial is characterized in that auxiliary rollers (12) are arranged at the middle edges of the front end flange (1) and the rear end flange (2), the auxiliary rollers (12) are tightly attached to the rotary dial (3), a sealing ring (22) is arranged at the center of the rear end flange (2), and a central round hole of the rotary dial (3) is sleeved on the sealing ring (22).
5. A ventilator petal rotary variable-diameter adjustment door as defined in claim 1, wherein: the novel rotary dial is characterized in that a dial limiting hole (20) is formed in the rear end flange (2), the dial limiting hole (20) is a circular arc-shaped strip hole, a protrusion is arranged on one surface of the rotary dial (3) which is clung to the rear end flange (2), and the protrusion penetrates through the dial limiting hole (20) and is provided with a dial buckle (32) at the top.
6. The ventilator petal rotary variable-diameter adjustment door of claim 5, wherein: the rotary driving plate (3) is connected with the arc-shaped rack (31) through a bulge, the arc-shaped rack (31) is connected with the servo motor (5) through a motor gear (51), and a main shaft of the servo motor (5) is rotatably arranged on the rear end flange (2) through a rotary shaft seat (21).
7. A petal type rotary diameter-changing adjusting method for a ventilator is characterized by comprising the following steps of: the method comprises the following adjustment processes:
the front end flange (1) and the rear end flange (2) of the petal type rotary diameter-changing adjusting door are arranged in the middle of a ventilation pipe of the ventilator by bolts;
the blocking area of the middle ventilation opening of the telescopic flap (4) is controlled by adjusting the distance between the telescopic flaps (4) which are closely attached to each other and the central axis of the middle ventilation opening;
according to the actual requirement on ventilation quantity, the telescopic moving distance of the telescopic flap (4) is controlled through the servo motor (5);
by scoring the derailment on the fixed front flange (1) and the rotating dial (3), the telescoping flaps (4) move telescoping along the scored derailment as they telescope.
8. The method for adjusting the petal rotary diameter of a ventilator according to claim 7, wherein: the front end flange (1) and the rotary driving plate (3) are respectively provided with a fixed limit groove (10) and a rotary limit groove (30), the fixed limit groove (10) is used for controlling the distance between the telescopic flap (4) and the central axis of the ventilation opening, and the rotary limit groove (30) is used for matching the fixed limit groove (10) to move the position of the telescopic flap (4) and applying moving force to the telescopic flap (4).
9. The method for adjusting the petal rotary diameter of a ventilator according to claim 8, wherein: the center line of the rotation limiting groove (30) is always perpendicular to the moving direction of the telescopic flap (4).
10. The method for adjusting the petal rotary diameter of a ventilator according to claim 7, wherein: the telescopic petals (4) are connected into a whole through mortise and tenon joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310105596.0A CN116025584A (en) | 2023-02-13 | 2023-02-13 | Petal type rotary variable-diameter adjusting door of ventilator and adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310105596.0A CN116025584A (en) | 2023-02-13 | 2023-02-13 | Petal type rotary variable-diameter adjusting door of ventilator and adjusting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116025584A true CN116025584A (en) | 2023-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310105596.0A Pending CN116025584A (en) | 2023-02-13 | 2023-02-13 | Petal type rotary variable-diameter adjusting door of ventilator and adjusting method |
Country Status (1)
| Country | Link |
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| CN (1) | CN116025584A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117212203A (en) * | 2023-10-08 | 2023-12-12 | 中润环保科技(南通)有限公司 | Flow-adjustable combined double-stage fan |
-
2023
- 2023-02-13 CN CN202310105596.0A patent/CN116025584A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117212203A (en) * | 2023-10-08 | 2023-12-12 | 中润环保科技(南通)有限公司 | Flow-adjustable combined double-stage fan |
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