CN112254244A - Fresh air guiding device for energy-saving building - Google Patents
Fresh air guiding device for energy-saving building Download PDFInfo
- Publication number
- CN112254244A CN112254244A CN202011142933.6A CN202011142933A CN112254244A CN 112254244 A CN112254244 A CN 112254244A CN 202011142933 A CN202011142933 A CN 202011142933A CN 112254244 A CN112254244 A CN 112254244A
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- Prior art keywords
- plate
- positioning cylinder
- annular
- pipe
- sealing plate
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Classifications
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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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- 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
- F24F13/02—Ducting arrangements
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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
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
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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
- F24F2007/001—Ventilation with exhausting air ducts
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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
- F24F2007/004—Natural ventilation using convection
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention discloses a fresh air guiding device for an energy-saving building, which comprises a positioning cylinder, a wind resistance pipe group, a ventilating cylinder and a driving ring, wherein the ventilating cylinder is accommodated in the positioning cylinder and coaxially distributed, two ends of the positioning cylinder are connected with annular air passing plates, inner holes of the annular air passing plates are fixedly connected with the outer wall of the ventilating cylinder, and the wind resistance pipe group is arranged in the positioning cylinder and uniformly distributed in the circumferential direction. According to the invention, the positioning cylinder is arranged, the ventilating cylinder is arranged in the positioning cylinder, the wind resistance pipe groups which are uniformly distributed in the circumferential direction are arranged between the positioning cylinder and the ventilating cylinder, and two ends of each wind resistance pipe group are connected with the annular air passing plate, wherein the annular air passing plate comprises the air pipe, the spherical joint and the rubber pipe, and the internal air passages of the wind resistance pipe groups are the same as or similar to the internal passages of the Tesla valves, so that air pressure difference exists at two ends of the wind resistance pipe groups, and the indoor airflow body feeling can be improved.
Description
Technical Field
The invention relates to the technical field of building ventilation, in particular to a fresh air flow guiding device for an energy-saving building.
Background
Fresh air circulation supply and internal heat preservation are the characteristics pursued by the existing buildings, the main design stream of the existing buildings is a green building, namely, the existing buildings have the characteristics of environmental protection, energy conservation and the like, and the building structure is usually a fixed structure, so that the existing energy-saving buildings also have the condition that natural wind is not effectively utilized, and the specific defects are as follows: 1. outdoor natural wind enters the room, and when the wind speed and the wind pressure are high, the indoor airflow is high, so that the body feeling is influenced; 2. the indoor ventilation effect is poor, and particularly, the exchange quantity of indoor air and external air is small; 3. the supply amount of indoor natural wind cannot be controlled, and the air exchange efficiency is low; 4. some flow guide devices with efficient air exchange functions exist in the market, but the flow guide devices are complex in structure and poor in automatic control effect.
Therefore, the invention provides a fresh air guiding device for an energy-saving building.
Disclosure of Invention
The invention aims to: in order to solve the problems mentioned in the background art, the fresh air guiding device for the energy-saving building is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fresh air guiding device for an energy-saving building comprises a positioning cylinder, a wind resistance pipe set, a ventilating cylinder and a driving ring, wherein the ventilating cylinder is accommodated in the positioning cylinder and coaxially distributed, two ends in the positioning cylinder are connected with annular air passing plates, inner holes of the annular air passing plates are fixedly connected with the outer wall of the ventilating cylinder, the wind resistance pipe set is arranged in the positioning cylinder and circumferentially and uniformly distributed, two ends of the wind resistance pipe set are communicated with the two annular air passing plates, the wind resistance pipe set comprises an air pipe, a spherical joint and a rubber pipe, two side walls in parallel distribution of the air pipe penetrate through and are connected with at least two spherical joints distributed in the length direction in a spherical hinge mode, the spherical joints on two sides of the air pipe are asymmetrically distributed, the two spherical joints on the same side are connected through the rubber pipe, the driving ring is arranged at one end of the ventilating cylinder, and a connecting rod penetrating through one annular air passing plate is fixedly arranged on one side of the driving ring, the number of this connecting rod is the same and the annular board of crossing the tuber pipe is axial sliding fit, be connected with the spacing post that uses with the rubber tube cooperation through the connecting plate on the connecting rod, be provided with the valve plate combination in the draft tube.
As a further description of the above technical solution:
the annular grooves are formed in the opposite sides of the two annular air passing plates, a conical fan cover is fixedly arranged at the bottom of each annular groove, and the small end of each conical fan cover is fixedly connected with one end of each air pipe.
As a further description of the above technical solution:
the valve plate combination includes outer shrouding and interior shrouding, outer shrouding and interior shrouding distribute with the axle center and be normal running fit, correspond on outer shrouding and the interior shrouding and set up three circumference evenly distributed's outer fan-shaped hole and interior fan-shaped hole, one side of outer shrouding is fixed and is provided with connecting axle one, and this connecting axle one keeps away from the one end fixed connection of drive ring through connecting plate one and on the location section of thick bamboo, one side of interior shrouding is fixed and is provided with connecting axle two with the axle center distribution.
As a further description of the above technical solution:
the utility model discloses a fixed axle, including interior shrouding, the fixed axle that distributes with the axle center is provided with on the outer shrouding.
As a further description of the above technical solution:
the valve plate is well combined and comprises a torsional spring, the torsional spring is sleeved on the fixed shaft, the positioning cylinder and the annular air passing plate are in running fit, one end of the second connecting shaft is fixedly connected with the inner surface wall of the second driving ring through the second connecting plate, the second connecting shaft and the second connecting plate are in axial sliding fit, one side of the annular air passing plate far away from the driving ring is fixedly connected with a blade plate through a support, and the blade plate corresponds to an air duct.
As a further description of the above technical solution:
one end of the channel in the spherical joint, which is positioned in the air duct, is in a conical shape, and the large end of the channel faces outwards.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the positioning cylinder is arranged, the ventilating cylinder is arranged in the positioning cylinder, the wind resistance pipe groups which are uniformly distributed in the circumferential direction are arranged between the positioning cylinder and the ventilating cylinder, and two ends of each wind resistance pipe group are connected with the annular air passing plate, wherein the annular air passing plate comprises the air pipe, the spherical joint and the rubber pipe, and the internal air passages of the wind resistance pipe groups are the same as or similar to the internal passages of the Tesla valves, so that air pressure difference exists at two ends of the wind resistance pipe groups, and the indoor airflow body feeling can be improved.
2. According to the invention, the driving ring is arranged, the connecting rod which penetrates through the annular air passing plate and is in axial sliding fit is arranged on the driving ring, the limiting column which is matched with the rubber pipe for use is arranged on the connecting rod, the bending and inclining direction of the rubber pipe can be changed by sliding the driving ring, the air blocking direction of the air blocking pipe group can be further changed, the indoor and outdoor one-way quick air exchange is convenient, and the air exchange efficiency is improved.
3. The invention sets a valve plate combination in the ventilation barrel, the valve plate combination comprises an outer sealing plate, an inner sealing plate and a torsion spring, wherein the outer sealing plate and a positioning barrel are relatively fixed, the inner sealing plate and a driving ring are in axial sliding fit, the positioning barrel and an annular air passing plate are in rotating fit, a blade plate is arranged on the annular air passing plate positioned outdoors, when fresh air is supplemented indoors for ventilation, the annular air passing plate can rotate after indoor air exhausted by an air pipe passes through the blade plate, and then the driving ring is driven to rotate, the driving ring can drive the inner sealing plate to rotate, so that the opening of the valve plate combination is realized, the indoor air ventilation is accelerated, the valve plate combination is automatically closed after the indoor air pressure is reduced, the indoor air is continuously exhausted outdoors through the air pipe, and the automatic control function is realized.
Drawings
Fig. 1 is a schematic structural diagram of the overall assembly of a fresh air guiding device for an energy-saving building according to the present invention;
fig. 2 is a schematic structural view of a wind resistance pipe group of a fresh air guiding device for an energy-saving building according to the present invention;
fig. 3 is a schematic structural view of the fresh air guiding device for energy-saving buildings according to the present invention, in which the positioning cylinder is removed in fig. 1;
FIG. 4 is a schematic structural view of the combination and matching of the positioning cylinder, the ventilation cylinder and the valve plate of the fresh air guiding device for the energy-saving building provided by the invention;
FIG. 5 is a schematic structural diagram of a split front view of a valve plate assembly of the fresh air guiding device for energy-saving buildings according to the present invention;
fig. 6 is a schematic structural diagram of a fresh air guiding device for an energy-saving building shown in fig. 1 from the rear view.
Illustration of the drawings:
1. a positioning cylinder; 2. a windage pipe set; 21. an air duct; 22. a ball joint; 23. a rubber tube; 3. a funnel; 4. a drive ring; 41. a connecting rod; 411. a limiting column; 5. an annular air passing plate; 51. an annular groove; 511. a conical fan housing; 52. a leaf plate; 6. combining a valve plate; 61. an outer sealing plate; 611. an outer fan-shaped hole; 612. a first connecting shaft; 613. a fixed shaft; 62. an inner sealing plate; 621. an inner sector-shaped hole; 622. a second connecting shaft; 623. a mating hole; 63. a torsion spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-3, a fresh air guiding device for energy-saving buildings comprises a positioning cylinder 1, a wind resistance pipe group 2, a ventilating pipe 3 and a driving ring 4, wherein two ends of the positioning cylinder 1 are in an open state, the positioning cylinder 1 is used for being fixedly installed in a hole reserved on a wall body, the wind resistance pipe group 2 is used for increasing wind resistance reduction, specific external high-pressure airflow enters the wind resistance pipe group 2, after pressure reduction treatment of the wind resistance pipe group 2, the airflow entering the room is in a low-pressure state, meanwhile, the indoor high-pressure airflow can be discharged to the outside without obstruction for air exchange, the ventilating pipe 3 serves as a wind valve, and the driving ring 4 is used for changing the wind resistance direction of the wind resistance pipe group 2; the specific implementation mode is as follows: the funnel 3 is accommodated in the positioning cylinder 1 and coaxially distributed, the two ends of the positioning cylinder 1 are connected with annular air passing plates 5, in this embodiment, the positioning cylinder 1 and the annular air passing plates 5 are fixedly connected, the inner hole of the annular air passing plate 5 is fixedly connected with the outer surface wall of the funnel 3, the air resistance pipe groups 2 are arranged in the positioning cylinder 1 and uniformly distributed in the circumferential direction, the two ends of the air resistance pipe groups 2 are communicated with the two annular air passing plates 5, specifically, the opposite sides of the two annular air passing plates 5 are both provided with annular grooves 51, the annular grooves 51 have the function of collecting wind, the bottom of the annular grooves 51 is fixedly provided with a conical wind cover 511, the small end of the conical wind cover 511 is fixedly connected with one end of the wind pipe 21, the air resistance pipe groups 2 comprise a wind pipe 21, a spherical joint 22 and a rubber pipe 23, the two parallel distributed side walls of the wind pipe 21 are both penetrated through and are connected with at least two spherical joints 22 distributed in, the spherical joints 22 on both sides of the air duct 21 are asymmetrically distributed, two spherical joints 22 on the same side are connected through a rubber tube 23, one end of a channel in the spherical joint 22, which is positioned in the air duct 21, is in a conical shape, and the large end of the spherical joint faces outwards, the driving ring 4 is arranged at one end of the air duct 3, and one side of the driving ring is fixedly provided with a connecting rod 41 which penetrates through an annular air passing plate 5, the number of the connecting rods 41 is the same as that of the air duct 21 and is in axial sliding fit with the annular air passing plate 5, the connecting rod 41 is connected with a limiting column 411 which is matched with the rubber tube 23 through a connecting plate, after the device is connected with a wall body, the driving ring 4 is positioned indoors and slides towards the indoor direction, the rubber tube 23 is in a state shown in the figure, it is pointed out that the structure of the internal channel of the whole wind resistance tube group 2 is the same as or similar to the internal channel of a tesla valve, which is a one-way conduction, the air flow can be conducted in one direction without any movable part and energy input. Its forward flow is huge with the reverse flow difference, do not need inside to carry out mechanical motion, utilize spatial structure to promote gaseous flow, accelerate gas through physical structure, reduce the energy loss of gas in the transportation, the windage nest of tubes 2 of this device utilizes this principle to realize that outdoor high-pressure draught passes through, low-pressure draught gets into indoorly, do not influence indoor and outdoor air exchange simultaneously, it needs to notice, rubber tube 23 and ball-type joint 22 that set up among this technical scheme, when driving ring 4 to outdoor direction slip, can change the crooked incline direction of rubber tube 23, and then can control outside high-pressure draught and get into indoorly fast, realize indoor outdoor folk prescription under two kinds of circumstances and take a breath to the high efficiency, be provided with valve plate combination 6 in the draft tube 3.
Example 2
Referring to fig. 4 and 5, the difference from embodiment 1 is that the valve plate assembly 6 includes an outer sealing plate 61 and an inner sealing plate 62, the outer sealing plate 61 and the inner sealing plate 62 are coaxially distributed and are in a rotating fit, three outer sector holes 611 and three inner sector holes 621 which are uniformly distributed in the circumferential direction are correspondingly formed on the outer sealing plate 61 and the inner sealing plate 62, after the inner sealing plate 62 is rotated, the inner sector holes 621 and the outer sector holes 611 are overlapped, thereby realizing large-area indoor and outdoor communication, which is suitable for free ventilation of indoor and outdoor, a first connecting shaft 612 is fixedly arranged on one side of the outer sealing plate 61, the first connecting shaft 612 is fixedly connected with one end of the positioning cylinder 1, which is far away from the driving ring 4, a second connecting shaft 622 which is coaxially distributed is fixedly arranged on one side of the inner sealing plate 62, a matching hole 623 which is coaxially distributed is formed on one side of the inner sealing plate 62, and a fixing shaft 613 which is coaxially distributed is, the fixed shaft 613 is rotatably connected to the fitting hole 623, and the second connecting shaft 622 functions as a driving lever.
Example 3
Referring to fig. 5 and fig. 6, based on the difference between embodiment 1 and embodiment 2, the valve plate assembly 6 preferably includes a torsion spring 63, the torsion spring 63 is sleeved on the fixed shaft 613, in a normal state, the inner fan-shaped hole 621 and the outer fan-shaped hole 611 are in a dislocation state under the action of the torsion spring 63, the air funnel 3 is in a blocking state, the positioning cylinder 1 and the annular air passing plate 5 are in a rotating fit, one end of the connecting shaft two 622 is fixedly connected with the inner surface wall of the driving ring 4 through a connecting plate two, the connecting plate two can be a three-pointed star-shaped structure, the connecting shaft two 622 and the connecting plate two are in an axial sliding fit, one side of the annular air passing plate 5 far away from the driving ring 4 is fixedly connected with a vane 52 through a bracket, the vane 52 corresponds to the air duct 21, the high-speed ventilation direction of the air blocking pipe assembly 2 is changed, the indoor-to-outdoor-low, high-speed air current can be changed direction by leaf 52 when passing through tuber pipe 21 to outdoor discharge, and then utilizes the reaction force of air current to promote the air funnel 3 and rotate, and then can drive the drive ring 4 and rotate, and interior shrouding 62 begins to overcome torsional spring 63's torsion rotation from this and makes interior sector hole 621 and outer sector hole 611 be in the coincidence state, and increase exhaust velocity, after indoor air pressure reduces, under torsional spring 63's effect, interior shrouding 62 resets, has the efficiency of automatic control displacement.
The working principle is as follows: when the air conditioner is used, when outdoor wind power is too high, the driving ring 4 is manually pulled towards the indoor direction, at the moment, the connecting rod 41 drives the limiting column 411 to move, the limiting column 411 pulls the rubber pipe 23 and forms a bent shape, the bent shape of the rubber pipe is similar to the structure of a channel inside a 'Tesla valve', at the moment, the rubber pipe 23 inclines towards the indoor direction, therefore, external high-speed airflow enters through a conical fan cover on an annular air passing plate 5 positioned outside and then enters the air pipe 21, then the airflow enters the rubber pipe 23 mentioned in the embodiment 1, and main flow airflow blowing towards the air pipe 21 in the reverse direction is conducted by the rubber pipe 23, so that the flow rate of the airflow entering the indoor is reduced, therefore, the indoor speed reduction conveying of outdoor natural wind can be realized, and the body feeling is improved; when the outdoor air is required to be accelerated to be delivered to the indoor, the driving ring 4 is reversely slid, and when the driving ring 4 is slid to the outdoor direction, the bending and inclining direction of the rubber tube 23 can be changed, so that the high-pressure air flow outside can be controlled to rapidly enter the indoor.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The fresh air flow guide device for the energy-saving building is characterized by comprising a positioning cylinder (1), a wind resistance pipe group (2), a ventilating cylinder (3) and a driving ring (4), wherein the ventilating cylinder (3) is accommodated in the positioning cylinder (1) and coaxially distributed, two ends of the positioning cylinder (1) are connected with annular air passing plates (5), an inner hole of each annular air passing plate (5) is fixedly connected with the outer surface wall of the ventilating cylinder (3), the wind resistance pipe group (2) is arranged in the positioning cylinder (1) and uniformly distributed in the circumferential direction, two ends of the wind resistance pipe group (2) are communicated with the two annular air passing plates (5), the wind resistance pipe group (2) comprises a spherical joint (22) and a rubber pipe (23), two side walls of the air pipe (21) which are distributed in parallel penetrate through and are connected with at least two joints (22) distributed in the length direction in a spherical hinge manner, lie in ball-type joint (22) of tuber pipe (21) both sides are asymmetric distribution, with two of one side ball-type joint (22) are passed through rubber tube (23) and are connected, drive ring (4) set up in the one end of draft tube (3) and the fixed connecting rod (41) that run through an annular board (5) of crossing wind of its one side, the quantity of this connecting rod (41) is the same with the quantity of tuber pipe (21) and crosses wind board (5) for axial sliding fit with the annular, be connected with spacing post (411) with the cooperation of rubber tube (23) and use through the connecting plate on connecting rod (41), be provided with valve plate combination (6) in draft tube (3).
2. The fresh air guiding device for the energy-saving building as recited in claim 1, wherein annular grooves (51) are formed in opposite sides of the two annular air passing plates (5), a conical fan housing (511) is fixedly arranged at the bottom of each annular groove (51), and a small end of each conical fan housing (511) is fixedly connected with one end of the air pipe (21).
3. The fresh air flow guiding device for the energy-saving building as claimed in claim 1, wherein the valve plate assembly (6) comprises an outer sealing plate (61) and an inner sealing plate (62), the outer sealing plate (61) and the inner sealing plate (62) are coaxially distributed and are in rotating fit, three outer fan-shaped holes (611) and three inner fan-shaped holes (621) which are circumferentially and uniformly distributed are correspondingly formed in the outer sealing plate (61) and the inner sealing plate (62), a first connecting shaft (612) is fixedly arranged on one side of the outer sealing plate (61), the first connecting shaft (612) is fixedly connected with one end of the positioning barrel (1) far away from the driving ring (4) through the first connecting plate, and a second connecting shaft (622) which is coaxially distributed is fixedly arranged on one side of the inner sealing plate (62).
4. The fresh air guiding device for the energy-saving building as claimed in claim 3, wherein one side of the inner sealing plate (62) is provided with matching holes (623) coaxially distributed, and the outer sealing plate (61) is fixedly provided with fixing shafts (613) coaxially distributed.
5. The fresh air flow guide device for the energy-saving building as claimed in claim 3, wherein the valve plate assembly (6) preferably comprises a torsion spring (63), the torsion spring (63) is sleeved on the fixed shaft (613), the positioning cylinder (1) and the annular air passing plate (5) are in rotating fit, one end of the second connecting shaft (622) is fixedly connected with the inner surface wall of the driving ring (4) through the second connecting plate, the second connecting shaft (622) and the second connecting plate are in axial sliding fit, one side of the annular air passing plate (5) far away from the driving ring (4) is fixedly connected with a vane (52) through a bracket, and the vane (52) corresponds to the air pipe (21).
6. The fresh air guiding device for the energy-saving building as claimed in claim 1, wherein the end of the channel in the ball joint (22) located in the air pipe (21) is conical, and the large end faces outwards.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202011142933.6A CN112254244A (en) | 2020-10-23 | 2020-10-23 | Fresh air guiding device for energy-saving building |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202011142933.6A CN112254244A (en) | 2020-10-23 | 2020-10-23 | Fresh air guiding device for energy-saving building |
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CN112254244A true CN112254244A (en) | 2021-01-22 |
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Family Applications (1)
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CN202011142933.6A Withdrawn CN112254244A (en) | 2020-10-23 | 2020-10-23 | Fresh air guiding device for energy-saving building |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6616404B1 (en) * | 2000-01-03 | 2003-09-09 | Munters Corporation | Ventilation fan |
CN2630713Y (en) * | 2003-08-01 | 2004-08-04 | 李澜 | Roofing ventilator |
WO2016174379A1 (en) * | 2015-04-25 | 2016-11-03 | Smiths Medical International Limited | Speaking valves and tracheostomy tube assemblies |
CN208365746U (en) * | 2018-05-15 | 2019-01-11 | 贵阳恒聚人防设备有限责任公司 | A kind of civil defense system ventilation duct |
CN210220141U (en) * | 2019-07-04 | 2020-03-31 | 侯烨明 | Embedded wall fresh air machine |
CN211230346U (en) * | 2019-10-15 | 2020-08-11 | 中国石油天然气股份有限公司 | Well head sealer |
-
2020
- 2020-10-23 CN CN202011142933.6A patent/CN112254244A/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6616404B1 (en) * | 2000-01-03 | 2003-09-09 | Munters Corporation | Ventilation fan |
CN2630713Y (en) * | 2003-08-01 | 2004-08-04 | 李澜 | Roofing ventilator |
WO2016174379A1 (en) * | 2015-04-25 | 2016-11-03 | Smiths Medical International Limited | Speaking valves and tracheostomy tube assemblies |
CN208365746U (en) * | 2018-05-15 | 2019-01-11 | 贵阳恒聚人防设备有限责任公司 | A kind of civil defense system ventilation duct |
CN210220141U (en) * | 2019-07-04 | 2020-03-31 | 侯烨明 | Embedded wall fresh air machine |
CN211230346U (en) * | 2019-10-15 | 2020-08-11 | 中国石油天然气股份有限公司 | Well head sealer |
Non-Patent Citations (1)
Title |
---|
冯鲁文,程泽堃: "特斯拉阀门的优化与改进仿真", 《技术与市场》 * |
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Application publication date: 20210122 |