CN107237765B - Scavenger fan with coordinated type tuyere valve - Google Patents
Scavenger fan with coordinated type tuyere valve Download PDFInfo
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- CN107237765B CN107237765B CN201710503008.3A CN201710503008A CN107237765B CN 107237765 B CN107237765 B CN 107237765B CN 201710503008 A CN201710503008 A CN 201710503008A CN 107237765 B CN107237765 B CN 107237765B
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- fixing ring
- intercepting
- mounting seat
- rotating shaft
- plate
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/003—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by throttling
Abstract
The invention discloses a ventilation fan with a linkage type air port valve, which comprises a body and a ventilation fan, wherein any end of the body along the axial direction is fixedly connected with a fixing ring, the fixing ring is provided with a six-blade linkage air port valve with a flow stabilizing effect, the air port valve comprises six pieces of equilateral triangle intercepting plates which are oppositely arranged on the upper surface of the fixing ring, the intercepting plates are hinged with a mounting seat, the bottom edge of each intercepting plate is fixedly connected with a rotating shaft, two ends of each rotating shaft penetrate through the mounting seat and are connected with conical gears, and the conical gears at two ends of two adjacent intercepting plates are mutually meshed; the middle part of the rotating shaft at the bottom edge of any intercepting plate is fixedly provided with two parallel rocker arms, and a lifting mechanism which enables the intercepting plate to rotate in a reciprocating manner by taking the rotating shaft at the bottom edge as the center of a circle is arranged between the two rocker arms. The invention can adjust the angle of the intercepting plate relative to the vent through the lifting mechanism by arranging the intercepting plates which are mutually linked, thereby forming different degrees of blockage to the vent and realizing the purpose of adjusting the air flow.
Description
Technical Field
The invention relates to the field of ventilation or air intake and exhaust devices, in particular to the field of pipeline ventilation devices and indoor ventilation devices, and particularly relates to a ventilation fan with a linkage type air port valve.
Background
A ventilator is a common ventilator, and is generally used for exchanging air between indoor and outdoor or discharging air from places such as a kitchen, and although the ventilator has various types, the ventilator generally uses a motor to drive an impeller to rotate, so as to discharge air in a suction manner, thereby achieving the purpose of exchanging air. The air duct is also used for air driving of a long-distance ventilation, but the existing ventilation fan can only change the current of a driving motor of the ventilation fan so as to obtain different rotating speeds of the driving motor. The applicant searches three relevant prior art patent technical documents, and the abstract is as follows:
prior art 1: the Chinese invention patent, application number 92111021.9, and grant publication number CN 1035211C provide a novel ventilation fan, it is characterized by that in the invented new-type scavenger fan respectively the air intake duct and air exhaust duct leading to indoor and outdoor are set, and in the air duct a movable air door is mounted, the ventilation fan can realize bidirectional ventilation indoors and outdoors and can circularly purify indoor air by adjusting the position of the movable air door, and the air inside and outside the room is heat exchanged in the ventilation fan, so that when the temperature difference between the air inside and outside the room is too large, by the air heat exchange of the machine, the temperature of the outdoor air can approach or reach the temperature of the indoor air and then the outdoor air is discharged into the room, the machine is also provided with an air filtering and purifying device which can effectively block outdoor mosquito dust and the like, purify the air and then discharge the fresh air into the room.
Prior art 2: chinese invention patent, application No. 201110203929.0, publication No. CN 102889662B, discloses a ventilation fan, which is composed of a metal ventilation fan mounting part, a power supply box, and a ventilation fan body, wherein: the mounting part of the ventilating fan is arranged at an opening part penetrating through the indoor and outdoor walls and is connected with the shell of the power box in a grounding way; the ventilator body is provided with a motor fixing metal piece which fixes the ventilator motor on the ventilator installation part, and the ventilator motor and the ventilator installation part form grounding connection. The invention has the advantages that the wiring operation is carried out without arranging a ground wire on the side of the ventilator body, thereby obtaining the effect of simply installing the ventilator.
Prior art 3: the chinese invention patent, application No. 201280010633.X, granted publication No. CN 103403358B, discloses a ventilation fan, which includes a ventilation fan body provided with fan blades, a motor, a frame, etc., a joint, and an electrical component box, wherein the ventilation air outlet includes a top air outlet arranged on the top surface of the frame of the ventilation fan and a side air outlet arranged on the side surface of the frame of the ventilation fan, which are connected together, and the joint is provided with a protruding structure matching the ventilation air outlet. The invention has the advantages that the height of the ventilating fan is reduced while the air quantity is ensured, the ventilating fan can be suitable for the installation of various ceilings, the installation of a connector is simplified, and the cost is saved.
Disclosure of Invention
The invention aims to provide a ventilation fan with a linkage type air port valve, which is used for solving the problem that the existing ventilation fan cannot adjust the air flow of an air duct from zero to the maximum value, so that the existing ventilation fan cannot effectively close an air vent when the ventilation is required to be stopped.
The invention is realized by the following technical scheme:
the ventilation fan with the linkage type air port valve comprises a body with a regular hexagon or a circular cross section, wherein a ventilation fan is installed in the body, the ventilation fan drives the air to flow in the direction consistent with the axis direction of the body, any end of the body in the axial direction is fixedly connected with a fixing ring in a circular ring shape, a six-blade linkage air port valve with a flow stabilizing effect is arranged on the fixing ring, the air port valve comprises six pieces of intercepting plates which are oppositely installed on the upper surface of the fixing ring and are in an equilateral triangle shape, the intercepting plates are hinged with a mounting seat arranged on the fixing ring, the bottom edges of the intercepting plates are fixedly connected with rotating shafts which are welded with the bottom edges in parallel, two ends of each rotating shaft penetrate through the mounting seat and are connected with bevel gears, and the bevel gears at two ends of two adjacent intercepting plates are; the middle part of the rotating shaft at the bottom edge of any intercepting plate is fixedly provided with two parallel rocker arms, and a lifting mechanism which enables the intercepting plate to rotate in a reciprocating manner by taking the rotating shaft at the bottom edge as the center of a circle is arranged between the two rocker arms.
In order to further implement the invention, the following arrangement is particularly adopted: elevating system is including dismantling fixed connection and in the driving motor of solid fixed ring lower surface, driving motor's drive shaft is provided with the external screw thread on running through solid fixed ring and extension's the drive shaft, and threaded connection has the push-and-pull piece in the drive shaft, push-and-pull piece is along length direction both ends an organic whole is connected with the rocker, the rocker is pegged graft and is being followed the bar that rocker length direction set up is downthehole just the rocker diameter is less than.
In order to further implement the invention, the following arrangement is particularly adopted: the rocker arm consists of two parallel square rods and arc sections which are smoothly connected with the two ends of the square rods; the included angle between the square rod and the plane of the intercepting plate is 120-135 degrees.
In order to further implement the invention, the following arrangement is particularly adopted: the mounting seat is a V-shaped section bar, is connected with the fixing ring in a fixed or detachable fixed connection mode, and a V-shaped vertex angle formed by intersecting two side edges of the mounting seat points to the circle center of the fixing ring; the side edge of the intercepting plate close to the mounting seat is provided with a chamfered edge, and the chamfered edge is parallel to the two side edges of the V-shaped mounting seat and a gap is reserved between the chamfered edge and the two side edges of the V-shaped mounting seat.
In order to further implement the invention, the following arrangement is particularly adopted: the V-shaped mounting seat is at an included angle of 60 degrees, and the axial direction of the through hole for accommodating the rotating shaft is perpendicular to the side length direction of the mounting seat.
In order to further implement the invention, the following arrangement is particularly adopted: the fixing ring is provided with a groove for accommodating the lifting mechanism, and the depth of the groove in the axial direction of the fixing ring is larger than the maximum effective lifting size of the lifting mechanism.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the intercepting plates which are mutually linked are arranged, so that the angle of the intercepting plates relative to the ventilation opening can be adjusted through the lifting mechanism, the blockage of the ventilation opening in different degrees is formed, and the purpose of adjusting the air flow is realized; when the intercepting plate is parallel to the ventilation opening, the blocking effect is zero; when the closure plate is perpendicular to the vent, the blocking effect is maximized to achieve regulation of the air flow rate of the vent.
(2) According to the invention, the six intercepting plates are spliced into a complete regular hexagon, so that the ventilation holes of the ventilating fan are completely shielded, complete interception is realized, and the problem that the existing ventilating fan cannot realize in the prior art when air does not need to be subjected to convection exchange and needs to be isolated is solved.
(3) The six intercepting plates are connected in a conical gear linkage mode, a single driving motor drives any one of the intercepting plates, and the other five intercepting plates deflect in a same step, so that the effect of simultaneous opening and closing is realized, and the problem that the intercepting effect is poor due to different deflecting angles of different intercepting plates is avoided.
(4) The intercepting plate can reduce the effective air circulation section of the ventilating fan, so that when the ventilating efficiency is required to be increased or the air flow rate is required to be increased, the effective air circulation section of the ventilating fan can be reduced through the intercepting plate after the blades of the ventilating fan reach the maximum rotating speed, and the air flow rate is further increased.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an enlarged schematic view of the lifting mechanism;
FIG. 3 is an enlarged schematic view of a bevel gear;
FIG. 4 is a schematic view of the shutoff plate of the present invention in a fully open position;
FIG. 5 is a schematic view of the closure of the present invention in a fully closed position;
wherein 1-body; 2-driving the motor; 3-fixing the ring; 4-mounting a base; 5-a bevel gear; 6-a rotating shaft; 7-a closure plate; 71-chamfering edges; 8-push-pull block; 9-a rocker arm; 10-a screw rod; 11-steady flow blade.
Detailed Description
The present invention will be described in further detail with reference to preferred examples thereof, but the present invention is not limited thereto.
Example 1:
with reference to the attached drawings 1-3, the ventilation fan with the linkage type air port valve comprises a main body 1 with a regular hexagon or round section, a ventilation fan is arranged in the body 1, the ventilation fan drives the air flow direction to be consistent with the axial direction of the body 1, any end of the body 1 along the axial direction is fixedly connected with a fixing ring 3 in a ring shape, the fixing ring 3 is provided with a six-blade linkage air port valve with a flow stabilizing function, the air port valve comprises six pieces of equilateral triangle-shaped intercepting plates 7 which are oppositely arranged on the upper surface of the fixing ring 3, the cut-off plate 7 is hinged with the mounting seat 4 arranged on the fixed ring 3, the bottom edge of the cut-off plate 7 is fixedly connected with a rotating shaft 6 which is welded with the bottom edge in parallel, two ends of the rotating shaft 6 penetrate through the mounting seat 4 to be connected with conical gears 5, and the conical gears 5 at two ends of two adjacent intercepting plates 7 are meshed with each other; two parallel rocker arms 9 are fixedly arranged in the middle of the rotating shaft 6 at the bottom edge of any intercepting plate 7, and a lifting mechanism which enables the intercepting plate 7 to rotate in a reciprocating manner by taking the rotating shaft 6 at the bottom edge as a circle center is arranged between the two rocker arms 9.
The structural characteristics and the working principle of the embodiment are analyzed:
the difference between the ventilation fan installed in the ventilation fan in this embodiment and the existing ventilation fan is not obvious, and one of the fans driven by any electric power and having the ventilation function can be adopted, which is not limited to the inclination angle of the blades and the number of the blades, and only needs to satisfy the air flow rate in the ventilation process. The greatest difference between this embodiment and the prior art and the structure that can solve the problem of air interception in the prior art is that the cutoff plate 7 is provided on the ventilation fan, and the elevating mechanism drives the cutoff plate 7 to deflect, when the cutoff plate 7 needs to be opened, namely, when the effective air circulation section of the ventilator is increased, the lifting mechanism descends to drive the rocker arm 9 to descend relative to the fixed ring 3, since the rocker arm 9 is fixedly connected with the cut-off plate 7, the relative angle does not change, and therefore, when the rocker arm 9 is lowered relative to the fixed ring 3, the cut-off plate 7 deflects outwards relative to the ventilator by taking the rotating shaft 6 as a fulcrum under the action of a lever, namely, the included angle between the plane of the cut-off plate 7 and the axial direction of the fixed ring 3 gradually becomes smaller until reaching the parallel state, the interception plate 7 loses its interception function and the effective air passage section of the ventilator is at its maximum. Similarly, when the ventilator needs to be stopped or the air flow rate of the ventilator needs to be increased and adjusted, the effective sectional area of air circulation needs to be reduced, at the moment, the lifting mechanism is adjusted to ascend to drive the rocker arm 9 to ascend relative to the fixing ring 3, and because the rocker arm 9 and the shutoff plate 7 are fixedly connected, the relative angle cannot be changed, therefore, when the rocker arm 9 ascends relative to the fixing ring 3, the shutoff plate 7 deflects inwards relative to the ventilator by taking the rotating shaft 6 as a fulcrum under the action of a lever, that is, the included angle between the plane where the shutoff plate 7 is located and the axial direction of the fixing ring 3 is gradually increased until the vertical state is reached, the shutoff plate 7 completely shields the effective ventilation section of the whole ventilator, so that the complete stopping effect is achieved, the effective air circulation section of the ventilator reaches zero, air cannot pass through, and the stopping effect is achieved.
Example 2:
in order to further implement the present invention, on the basis of embodiment 1, further, this embodiment specifically adopts the following arrangement: elevating system is including dismantling fixed connection and being in the driving motor 2 of solid fixed ring 3 lower surface, driving motor 2's drive shaft runs through solid fixed ring 3 and the drive shaft of extension and is provided with the external screw thread, and threaded connection has push-and-pull piece 8 in the drive shaft, push-and-pull piece 8 has the rocker along length direction both ends an organic whole, the rocker is pegged graft and is being followed the bar that 9 length direction of rocking arm set up is downthehole just the rocker diameter is less than.
The working principle is as follows: when the lifting mechanism needs to ascend, the driving motor 2 rotates forwards, the push-pull block 8 ascends along the driving shaft under the threaded fit of the driving shaft, in the ascending process, the rocker arm 9 is driven by the rocker arm fixedly connected with the push-pull block 8 to ascend and slide in the strip-shaped hole in the rocker arm 9, at the moment, the free end of the rocker arm 9 ascends continuously, the intercepting plate 7 descends continuously under the lever action, and the intercepting plate 7 moves towards the direction of increasing the intercepting effect continuously; in the same way, when the driving motor 2 rotates reversely, the push-pull block 8 descends along the driving shaft under the threaded fit of the driving shaft, in the descending process, the rocker arm 9 is driven by the rocker arm fixedly connected with the push-pull block 8 to descend and slide in the strip-shaped hole in the rocker arm 9, at the moment, as the free end of the rocker arm 9 descends continuously, the shutoff plate 7 ascends continuously under the action of the lever, the shutoff plate 7 moves towards the direction of continuously reducing the shutoff effect, and the effective ventilation cross-sectional area is increased gradually.
Example 3:
in order to further implement the present invention, on the basis of embodiment 1, further, this embodiment specifically adopts the following arrangement: elevating system include with the articulated lifter of 9 free ends of rocking arm, the lifter runs through solid fixed ring 3 is connected with solid fixed ring 3 lower fixed surface's driving motor 2 drive, be provided with the rack on the lifter, rack and driving motor 2's the epaxial gear engagement of drive, the positive and negative rotation motion through driving motor 2 drive lifter up-and-down motion to realize the purpose of the 9 free end luffing motion of control rocking arm, because rocking arm 9 and closure plate 7 fixed connection, thereby reach the purpose of control closure plate 7. The specific structure of the swing arm 9 free end hinged lifting rod in this embodiment is as follows: the rocker arm is provided with a groove for accommodating a ball arranged at the end of the lifting rod, and the groove is long-strip-shaped, so that the ball at the end of the lifting rod can slide back and forth in the groove; this is provided in order not to affect the transmission of the articulation moment by changing the relative position of the rocker arm 9 with respect to the lifting rod head during the pivoting process. Because the rocker arm 9 can only use the rotating shaft 6 as circular motion of the circle center, the lifting rod does linear motion, when the rocker arm 9 is at different angles, the intersection point between the rocker arm 9 and the lifting rod is changed, therefore, the arrangement is a ball body matched with the groove, the transmission of articulated moment can be simultaneously met, and the problem that the lifting rod and the rocker arm 9 cannot move due to the change of the position is not influenced.
Example 4:
on the basis of embodiment 1 or 2, in order to further implement the present invention, the following settings are specifically adopted: the rocker arm 9 consists of two parallel square rods and arc sections which are smoothly connected with the two ends of the square rods; the included angle between the square rod and the plane of the cut-off plate 7 is 120-135 degrees. The angle between the square rod of the rocker arm 9 and the cut-off plate 7 is set to take the lifting distance of the lifting mechanism and the space occupation of the rocker arm 9 into consideration. When the included angle is greater than 135 degrees, in order to fully open the shutoff plate 7 and realize the maximum air flow, a larger accommodating cavity of the rocker arm 9 needs to be arranged on the fixed ring 3, which is not favorable for the installation of the driving motor 2; when the included angle degree is less than 120 degrees, the rocker arm 9 cannot cause structural dryness with the fixed ring 3, but the lifting amplitude of the lifting mechanism can be obviously increased, and particularly when the intercepting plate 7 needs to be in a complete intercepting and closing state, the smaller the included angle degree is, the larger the required lifting amplitude is. For example, when the angle is 90 °, the position of the rocker arm 9 should be parallel to the axial direction of the fixed ring 3, i.e. parallel to the line of the lifting direction of the lifting mechanism, when the closure plate 7 is in the complete closure state, and there is theoretically no intersection point between the rocker arm 9 and the lifting mechanism, so that in this case, it is impossible to achieve complete closure of the closure plate 7. As a person skilled in the art, it should be understood from the above description of the structure and principle that this example is only for the reason and basis of the range of the included angle between the swing arm 9 and the intercepting plate 7, and is not claimed herein.
In order to further implement the invention, the following arrangement is particularly adopted: the mounting seat 4 is a V-shaped section bar, is connected with the fixing ring 3 in a fixed or detachable fixed connection mode, a V-shaped vertex angle formed by intersecting two side edges of the mounting seat 4 points to the circle center of the fixing ring 3, and through holes for accommodating the rotating shaft 6 are formed in the positions, close to the end heads, of the two side edges of the mounting seat 4; the side edge of the cut-off plate 7 close to the mounting seat 4 is provided with a chamfered edge 71, and the chamfered edge 71 is parallel to the two side edges of the V-shaped mounting seat 4 and has a gap therebetween.
In order to further implement the invention, the following arrangement is particularly adopted: the mount pad 4 of V type is 60 contained angles, the through-hole axial that is used for holding pivot 6 is perpendicular with 4 side length directions in place mount pad.
In order to further implement the invention, the following arrangement is particularly adopted: the fixing ring 3 is provided with a groove for accommodating the lifting mechanism, and the depth of the groove in the axial direction of the fixing ring 3 is larger than the maximum effective lifting size of the lifting mechanism.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (3)
1. The utility model provides a scavenger fan with coordinated type tuyere valve, includes that the cross-section is regular hexagon or circular shape body (1), install scavenging fan in body (1), scavenging fan drive air flow direction is unanimous with body (1) axis direction, its characterized in that: any end of the body (1) in the axial direction is fixedly connected with a fixing ring (3) which is in a circular ring shape, the fixing ring (3) is provided with a six-blade linkage air port valve with a flow stabilizing effect, the air port valve comprises six intercepting plates (7) which are oppositely arranged on the upper surface of the fixing ring (3) and are in an equilateral triangle shape, the intercepting plates (7) are hinged with a mounting seat (4) arranged on the fixing ring (3), the bottom edge of each intercepting plate (7) is fixedly connected with a rotating shaft (6) which is welded with the bottom edge in parallel, two ends of each rotating shaft (6) penetrate through the mounting seat (4) and are connected with bevel gears (5), and the bevel gears (5) at two ends of two adjacent intercepting plates (7) are mutually meshed; the middle part of a rotating shaft (6) at the bottom edge of any intercepting plate (7) is fixedly provided with two parallel rocker arms (9), and a lifting mechanism which enables the intercepting plate (7) to rotate in a reciprocating manner by taking the rotating shaft (6) at the bottom edge as a circle center is arranged between the two rocker arms (9);
the lifting mechanism comprises a driving motor (2) detachably and fixedly connected to the lower surface of the fixing ring (3), a driving shaft of the driving motor (2) penetrates through the fixing ring (3), an external thread is arranged on a driving shaft of an extending part, a push-pull block (8) is connected to the driving shaft in a threaded manner, rockers are integrally connected to two ends of the push-pull block (8) along the length direction, the rockers are inserted into strip-shaped holes formed in the rocker arm (9) along the length direction, and the diameters of the rockers are smaller than those of the strip-shaped holes;
the rocker arm (9) consists of two parallel square rods and arc sections which are smoothly connected with the two ends of the square rods; the included angle between the square rod and the plane where the cut-off plate (7) is positioned is 120-135 degrees;
the mounting seat (4) is a V-shaped section bar, is connected with the fixing ring (3) in a fixed or detachable fixed connection mode, a V-shaped vertex angle formed by intersecting two side edges of the mounting seat (4) points to the circle center of the fixing ring (3), and through holes for accommodating the rotating shaft (6) are formed in the positions, close to the ends, of the two side edges of the mounting seat (4); the side edge of the intercepting plate (7) close to the mounting seat (4) is provided with a chamfered edge (71), and the chamfered edge (71) is parallel to the two side edges of the V-shaped mounting seat (4) and a gap exists between the chamfered edge and the two side edges.
2. The ventilator of claim 1, wherein said ventilation fan further comprises: the V-shaped mounting seat (4) is at an included angle of 60 degrees, and the axial direction of the through hole for accommodating the rotating shaft (6) is perpendicular to the length direction of the side edge of the mounting seat (4).
3. The ventilator with linkage type air port valve according to claim 1 or 2, characterized in that: the fixing ring (3) is provided with a groove for accommodating the lifting mechanism, and the depth of the groove in the axial direction of the fixing ring (3) is larger than the maximum effective lifting size of the lifting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710503008.3A CN107237765B (en) | 2017-06-27 | 2017-06-27 | Scavenger fan with coordinated type tuyere valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710503008.3A CN107237765B (en) | 2017-06-27 | 2017-06-27 | Scavenger fan with coordinated type tuyere valve |
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| CN107237765A CN107237765A (en) | 2017-10-10 |
| CN107237765B true CN107237765B (en) | 2020-11-03 |
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| CN201710503008.3A Active CN107237765B (en) | 2017-06-27 | 2017-06-27 | Scavenger fan with coordinated type tuyere valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173449B (en) * | 2018-04-02 | 2021-05-14 | 佛山市顺德区艾朗电器有限公司 | Exhaust fan |
| CN109139521B (en) * | 2018-09-07 | 2020-06-26 | 福州盛世凌云环保科技有限公司 | Bladeless fan |
| CN110142272A (en) * | 2019-05-07 | 2019-08-20 | 德淮半导体有限公司 | A kind of cowling panel and groove-type cleaning machine |
| CN111322651B (en) * | 2020-03-30 | 2022-06-14 | 广东沃尔姆斯电器有限公司 | Smoke exhaust ventilator |
| CN112896206B (en) * | 2021-03-15 | 2022-04-15 | 大连交通大学 | Ventilation adjusting device for railway vehicle and adjusting method thereof |
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| CN1721702A (en) * | 2004-07-13 | 2006-01-18 | 广东松下环境系统有限公司 | Ventilation fan |
| CN201232662Y (en) * | 2008-06-03 | 2009-05-06 | 江门市金羚排气扇制造有限公司 | Covering and isolating ventilation fan |
| CN102889662A (en) * | 2011-07-20 | 2013-01-23 | 广东松下环境系统有限公司 | Ventilating fan |
| CN203215935U (en) * | 2013-04-28 | 2013-09-25 | 伍尚强 | Air conditioner exhaust window |
| CN204327535U (en) * | 2014-11-12 | 2015-05-13 | 广东顺德上叶电器有限公司 | The ventilation fan that a kind of intake grill can be closed automatically |
| CN206816523U (en) * | 2017-06-27 | 2017-12-29 | 四川建筑职业技术学院 | A kind of ventilation fan with coordinated type tuyere valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1721702A (en) * | 2004-07-13 | 2006-01-18 | 广东松下环境系统有限公司 | Ventilation fan |
| CN201232662Y (en) * | 2008-06-03 | 2009-05-06 | 江门市金羚排气扇制造有限公司 | Covering and isolating ventilation fan |
| CN102889662A (en) * | 2011-07-20 | 2013-01-23 | 广东松下环境系统有限公司 | Ventilating fan |
| CN203215935U (en) * | 2013-04-28 | 2013-09-25 | 伍尚强 | Air conditioner exhaust window |
| CN204327535U (en) * | 2014-11-12 | 2015-05-13 | 广东顺德上叶电器有限公司 | The ventilation fan that a kind of intake grill can be closed automatically |
| CN206816523U (en) * | 2017-06-27 | 2017-12-29 | 四川建筑职业技术学院 | A kind of ventilation fan with coordinated type tuyere valve |
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| CN107237765A (en) | 2017-10-10 |
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