KR19980027671U - Ventilation windows in plastic house - Google Patents
Ventilation windows in plastic house Download PDFInfo
- Publication number
- KR19980027671U KR19980027671U KR2019960040626U KR19960040626U KR19980027671U KR 19980027671 U KR19980027671 U KR 19980027671U KR 2019960040626 U KR2019960040626 U KR 2019960040626U KR 19960040626 U KR19960040626 U KR 19960040626U KR 19980027671 U KR19980027671 U KR 19980027671U
- Authority
- KR
- South Korea
- Prior art keywords
- opening
- closing
- window frame
- plate
- closing plate
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/241—Arrangement of opening or closing systems for windows and ventilation panels
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/18—Special structures in or on roofs, e.g. dormer windows
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/02—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation having means for ventilation or vapour discharge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
본 고안은 농산물을 재배하는 비닐하우스에 설치하여 환기시키는 비닐하우스의 창문에 관한 것으로서, 종래의 비닐하우스창문은 창틀의 일측에 개폐판의 일측을 유착하여서 된 것이므로 개폐판을 상방으로 회전시켜 열 경우에는 창틀의 개구부로 유입되는 찬공기는 골고루 분산됨이 없이 창문이 설치된 부분의 작물에 많이 가해지게 되어 비닐하우스내의 작물이 균일하게 성장이 되지 못할 뿐만 아니라 비오는 날에는 빗물이 들어오게되어 개폐판을 열어 환기시킬 수 없는 문제가 있고, 또한 정밀하게 제조하였다 하더라도 창틀과 개폐판의 사이에 틈새가 생기게 마련이어서 이의 틈새를 통하여 공기가 유통케되어 비닐하우스내부를 적정온도로 유지시키는데 많은 어려움이 따르게 되었다.The present invention relates to a window of a vinyl house to be installed and ventilated in a vinyl house for growing agricultural products, and the conventional vinyl house window is made by adhering one side of the opening and closing plate to one side of the window frame. The cold air flowing into the window frame opening is applied to the crops in the windowed areas without being evenly distributed, so that the crops in the plastic house cannot grow uniformly, and rain water enters the rainy days to open and close the panel. There is a problem that can not be opened and ventilated, and even if precisely manufactured, there is a gap between the window frame and the opening and closing plate, so that the air is circulated through the gap there is a lot of difficulties to maintain the inside of the plastic house at an appropriate temperature. .
본 고안은 상기와 같은 문제점을 해결하기 위한 수단으로서 원통창틀의 개부상부에는 비가림판을 형성하여 비오는 날에도 환기시킬 수 있도록함과 아울러 개폐판이 접촉되는 원통창틀에는 패킹을 고정하여 공기의 유통을 방지함으로서 비닐하우스내부의 온도를 적정온도로 유지시킬 수 있도록 하고, 또한 개폐판은 한쌍으로 설치하여 하방으로 열리게하여 개폐판을 열때 비닐하우스내로 유입되는 외부의 찬공기는 개폐판에 의하여 고루 분산되게하여 작물에 균일한 온도의 공기가 미치도록하여 작물의 성장속도를 향상시킬 수 있도록 한 것임.The present invention is a means for solving the above problems by forming a non-rim plate on the upper portion of the cylindrical window frame to be ventilated even on a rainy day, and to fix the packing to the cylindrical window frame in contact with the opening and closing plate to distribute the air By preventing the temperature inside the vinyl house to be maintained at an appropriate temperature, and the opening and closing boards are installed in pairs to open downward so that the cold air outside the plastic house when the opening and closing the opening boards are evenly distributed by the opening and closing boards. This is to improve the growth rate of crops by spreading the air at a uniform temperature.
Description
도1은 본 고안은 비닐하우스에 설치한 상태의 사시도,1 is a perspective view of the present invention installed in a plastic house,
도2는 본 고안의 사시도,2 is a perspective view of the present invention,
도3은 본 고안의 단면도,3 is a cross-sectional view of the present invention,
도4는 도3은 A-A선 단면도,4 is a cross-sectional view taken along the line A-A of FIG.
도5는 도3은 B-B선 단면도.5 is a cross-sectional view taken along line B-B.
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
1:원형창틀1':상단부1: round window frame 1 ': top
1A:상부돌턱1B:하부돌턱1A: Upper Stone Jaw 1B: Lower Stone Jaw
101:요부2, 3:돌환101: Yobu 2, 3: Return
4:패킹5:비가림판4: packing 5: unhiding board
5':돌턱6:지지발5 ': Stone 6: support feet
6':공간부6A:배수구멍6 ': space 6A: drain hole
7, 7,':개폐판701, 702:절곡홈7, 7, ': opening and closing plate 701, 702: bending groove
8:고정판9:패킹8: Fixed Edition 9: Packing
10:볼트11:나비너트10: Bolt 11: Butterfly nut
12, 12':브라켓트13:스프링12, 12 ': Bracket 13: Spring
14, 14':아이볼트15:너트14, 14 ': Eye bolt 15: Nut
16, 16':작동끈17:안내로울러16, 16 ': Operation strap 17: Guided by
본 고안은 농산물을 재배하는 비닐하우스에 설치하여 환기시키는 비닐하우스의 창문에 관한 것이다.The present invention relates to a window of a vinyl house to be ventilated by installing in a greenhouse to grow agricultural products.
일반적으로 비닐하우스의 환기창문을 별도로 제조하여 비닐하우스의 비닐에 구멍을 뚫어 개폐판이 유착된 창틀을 끼워 지주에 고정하여 설치하게 되는 바, 종래의 이러한 종류의 비닐하우스창문은 창틀의 일측에 개폐판의 일측을 유착하여서 된 것이므로 개폐판을 상방으로 회전시켜 열 경우에는 창틀의 개구부로 유입되는 찬공기는 골고루 분산됨이 없이 창문이 설치된 부분의 작물에 많이 가해지게 되어 비닐하우스내의 작물이 균일하게 성장이 되지 못할 뿐만 아니라 비오는 날에는 빗물이 들어오게되어 개폐판을 열어 환기시킬 수 없는 문제가 있고, 또한 정밀하게 제조하였다 하더라도 창틀과 개폐판의 사이에 틈새가 생기게 마련이어서 이의 틈새를 통하여 공기가 유통케되어 비닐하우스내부를 적정온도로 유지시키는데 많은 어려움이 따르게 되었다.In general, the ventilation window of the vinyl house is manufactured separately, and a hole is formed in the vinyl of the vinyl house to fix the window frame in which the opening and closing plate is attached and fixed to the prop. This type of conventional vinyl house window is the opening and closing plate on one side of the window frame. When one side of the window is rotated upward, the cold air flowing into the opening of the window sill is added to the crops in the part where the window is installed without being evenly distributed, so that the crops in the plastic house grow uniformly. Not only can this happen, but rainy water enters on rainy days, opening and closing the panel is not a problem, and even if precisely manufactured, there is a gap between the window frame and the opening and closing plate, so that air flows through the gap. It is difficult to keep the inside of the plastic house at the proper temperature. It was.
본 고안은 상기와 같은 문제점을 해결하기 위하여 안출한 것으로서 원통 창틀의 개부상부에는 비가림판을 형성하여 비오는 날에도 환기시킬 수 있도록함과 아울러 개폐판이 접촉되는 원통창틀에는 패킹을 고정하여 공기의 유통을 방지함으로서 비닐하우스내부의 온도를 적정온도로 유지시킬 수 있도록 하고, 또한 개폐판은 한쌍으로 설치하여 하방으로 열리게하여 개폐판을 열때 비닐하우스내로 유입되는 외부의 찬공기는 개폐판에 의하여 고루 분산되게하여 작물에 균일한 온도의 공기가 미치도록하여 작물의 성장속도를 향상시킬 수 있도록 한 비닐하우스의 환기창문을 제공할 수 있도록함게 그 목적이 있다.The present invention has been devised to solve the above problems, the upper part of the cylindrical window frame to form a non-limbing plate to be ventilated even on a rainy day, and to fix the packing to the cylindrical window frame in contact with the opening and closing plate to distribute the air By maintaining the temperature inside the plastic house to maintain the proper temperature, and the opening and closing plate is installed in pairs to open downward so that the external cold air flowing into the plastic house when opening the opening and closing plate is evenly distributed by the opening and closing plate. The purpose is to provide a ventilation window of the plastic house to improve the growth rate of the crop by spreading the air at a uniform temperature to the crop.
이러한 목적을 달성하기 위하여 본 고안은 하방에는 돌환을 일체로 형성한 원통창틀의 상단부에는 상부돌턱과 요부가 형성되게 하부돌턱을 형성하여 상부돌턱에는 원판형의 비가림판의 중앙에 형성한 지지발을 접촉시키고 하부돌턱에는 절곡홈을 형성한 개폐판을 접촉시켜 개폐판의 중간 저면에는 고정판을 접촉하여 지지발의 공간부바닥, 패킹, 상단부, 개폐판, 고정판을 볼트를 관통시켜 고정시키고, 개폐판에 고정한 브라켓트와 지지발의 상부와를 스프링으로 탄력시켜 개폐판을 닫은 상태에서 패킹에 밀착되도록하고 브라켓트와 개폐판에는 아이볼트를 고정하여 상기의 아이볼트에 작동끈을 고정하여 한 작동끈은 돌환의 하방에 유착한 안내로울러를 통과시켜 한쌍의 작동끈을 일방향으로 당겨 한쌍의 개폐판을 하방으로 동시에 열 수 있도록 한데 그 특징을 둔 것이다.In order to achieve the above object, the present invention forms a lower dolster so that the upper doldrum and the recess are formed at the upper end of the cylindrical window frame which is integrally formed with the annulus at the lower side, and the support foot formed at the center of the disc-shaped non-liming plate at the upper doldrum. The bottom plate is in contact with the opening and closing plate forming the bent groove. The fixing plate is in contact with the middle bottom of the opening and closing plate, and the space, bottom, packing, top, opening and closing plate of the supporting foot are fixed by penetrating the bolt. Resiliently fix the bracket and the upper part of the support foot with a spring so that it closes to the packing in the state of closing the opening and closing plate.The eye bolt is fixed to the eyebolt by fixing the eyebolt to the bracket and the opening and closing plate. Pass the guide roller attached to the puller and pull the pair of operation straps in one direction so that the pair of opening and closing plates can be opened simultaneously. It will put its features.
이하 본 고안의 바람직한 실시예를 첨부도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, described in detail by the accompanying drawings a preferred embodiment of the present invention as follows.
도2는 본 고안의 사시도이며, 도3은 본 고안의 단면도이고, 도4 내지 5는 본 고안의 요부단면도로서, 하방에는 비닐하우스에 고정시킬 수 있도록 한 돌환(2)과 상기의 돌환(2) 약간 하부에 돌환(3)을 일체로 형성한 원통창틀(1)의 상단부(1') 내측으로 상부돌턱(1A)과 요부(101)가 형성되게 하부돌턱(1B)을 형성하였다.Figure 2 is a perspective view of the subject innovation, Figure 3 is a cross-sectional view of the subject innovation, Figures 4 to 5 is a sectional view of the main portion of the subject innovation, the lower part of the hwanhwan 2 and the above-mentioned hwanhwan 2 to be fixed to the plastic house The lower step 1B was formed such that the upper step 1A and the recess 101 were formed inside the upper end 1 'of the cylindrical window frame 1 in which the protrusion 3 was integrally formed.
상부돌턱(1A)에는 돌턱(5')이 형성된 원판형의 비가림판(5)의 지지발(6)을 접촉시키는 한편 지지발(6)은 공간부(6')로 형성하고 공간부(6')의 바닥외측으로는 배수구멍(6A)을 뚫어 비가림판(5)의 빗물을 공간부(6') 및 배수구멍(6A)을 통하여 원통창틀(1)의 외면으로 배출되게 하였다.The support foot 6 of the disk-shaped non-limbing plate 5 in which the stone step 5 'is formed is brought into contact with the upper step 1A, while the support foot 6 is formed as the space part 6' and the space part 6 A drain hole 6A was drilled outside the bottom of ') to discharge rainwater from the non-liming plate 5 to the outer surface of the cylindrical window frame 1 through the space portion 6' and the drain hole 6A.
하부돌턱(1B)에는 절곡홈(701)(702)을 형성한 개폐판(7)(7')을 접촉시키고 절곡홈(701)(702)사이에는 고정판(8)을 접촉시켜 지지발(6)의 공간부(6')의 바닥과 패킹(9), 상단부(1'), 개폐판(7)(7')의 중간부 및 고정판(8)을 볼트(10)로 관통하여 나비너트(11)로 고정하였다.The lower pedestal 1B is brought into contact with the opening and closing plates 7 and 7 'forming the bent grooves 701 and 702, and the fixing plate 8 is brought into contact between the bent grooves 701 and 702. Through the bottom of the space (6 ') and the packing (9), the upper end (1'), the middle part of the opening and closing plate (7) (7 ') and the fixing plate (8) of the space (6') of the butterfly nut ( 11).
한편 상기의 개폐판(7)(7')은 단일의 합성수지판으로 되었으며 절곡홈(701)(702)의 부분에서 절곡작용이 이루어지도록 하였다.On the other hand, the opening and closing plate (7) (7 ') is made of a single synthetic resin plate and the bending action is to be made in the portion of the bending grooves (701, 702).
또한 개폐판(7)(7')에는 브라켓트(12)(12')를 고정하여 지지발(6)과 스프링(13)으로 탄력하여 개폐판(7)(7')은 항상 스프링(13)의 당김력에 의하여 닫힌상태로 유지되게 하였다.In addition, the brackets 12 and 12 'are fixed to the opening and closing plates 7 and 7' so as to be resilient with the support feet 6 and the springs 13 so that the opening and closing plates 7 and 7 'are always springs 13. It was kept closed by the pulling force of.
그리고 요부(101)에는 패킹(9)을 끼워 개폐판(7)(7')이 패킹(4)에 밀착되도록 하여 기밀을 향상시킬 수 있도록 하였다.In addition, the recessed portion 101 is fitted with a packing 9 so that the opening and closing plates 7 and 7 ′ are in close contact with the packing 4 to improve airtightness.
브라켓트(12)(12')와 개폐판(7)(7')에는 아이볼트(14)(14')를 너트(15)로 고정하여 상기의 아이볼트(14)(14')에는 작동끈(16)(16')을 고정하는 한편 작동끈(16')은 돌환(13)의 하방에 유착한 안내로울러(17)를 통과시켜 작동끈(16)(16')을 일방향으로 당겨 개폐판(7)(7')을 하방으로 동시에 작동시킬 수 있도록 하여서됨을 특징으로 한 것이다.The eye bolts 14 and 14 'are fixed to the brackets 12, 12' and the opening and closing plates 7 and 7 'with the nut 15, and the eye bolts 14 and 14' are operated with the nut 15. While fixing the 16 and 16 ', the operation string 16' passes through the guide roller 17 adhered to the lower portion of the annular 13 to pull the operation string 16 and 16 'in one direction to open and close the opening and closing plate. (7) (7 ') is characterized in that it can be operated simultaneously downward.
미설명부호 18, 18'는 지주이고, 19, 19'는 비닐이며, 20은 지지봉이고, 21'은 볼트이며, 22'는 너트이다.Unexplained 18, 18 'are posts, 19, 19' are vinyl, 20 is a support rod, 21 'is a bolt and 22' is a nut.
이와 같이 된 본 고안은 도1과 같이 한쌍의 지주(18)에 일정한 간격이 유지되게 두개의 지지봉(20)을 볼트(21) 및 너트(22)로 고정하여 두개의 지지봉(20)의 사이의 비닐(19)에 알맞은 구멍을 뚫고 상기의 구멍밑에서 외방으로 비가람판(5)과 원형창틀(1)을 끼워 돌환(2)이 지지봉(20)의 밑부분에 접촉되게 한후 지지봉(20)과 돌환(2)을 도5와 같이 볼트(21') 및 너트(22')로 고정하여 설치하여 사용하게 되는 것으로서, 상기의 상태에서 작동끈(16)(16')을 당기면 개폐판(7)(7')은 절곡홈(701)(702)을 기점으로 도3의 점선화살표인 하방향으로 열리게되고 작동끈(16)(16')의 당김을 해제하면 열렸던 개폐판(7)(7')은 스프링(13)의 당김력에 의하여 닫히게 되는 바, 본 고안은 하부돌턱(1B)에 의하여 형성된 요부(101)에는 패킹(4)를 끼워 고정하여 개폐판(7)(7')이 닫힐시 패킹(4)에 밀착되도록 하였으므로 종래와 같이 틈새로 내외로 공기가 유통되는 일이 없게 되어 비닐하우스 내부의 온도를 작물 성장에 알맞는 온도로 양호히 유지시킬 수 있음과 아울러 원통창틀(1)의 상부에는 비가림판(5)이 형성되었으므로 비가 올때에는 비가림판(5)에 떨어지는 물은 공간부(6')로 유입되어 배수구멍(6A) 및 원통창틀(1)의 외면을 타고 흘러내리게되고 원통창틀(1)의 개부에는 빗물이 떨어지지 않게 되어 비가 내릴때에는 개폐판(7)(7')을 열어 자유롭게 환기시킬 수 있고, 또한 양개폐판(7)(7')은 하방으로 “∧”형으로 열리기 때문에 개폐판(7)(7')을 열때에는 비닐하우스내로 유입되는 찬공기는 개폐판(7)(7')에 부딪혀 비닐하우스의 천정부에서 고루 펴져 균일한 온도의 유입공기가 작물에 미치게 됨으로 공기의 온도차이에 의하여 비닐하우스내의 작물이 부분적으로 불균형하게 성장될 염려가 없다.As described above, the present invention secures two support rods 20 with bolts 21 and nuts 22 to maintain a constant distance to the pair of struts 18, as shown in FIG. Drill a suitable hole in the vinyl (19) and put the non-rambling plate (5) and the circular window frame (1) outward from the above hole so that the projection (2) in contact with the bottom of the support rod 20 and then the support rod (20) and As shown in Fig. 5, the inverted ring 2 is fixed and installed with a bolt 21 'and a nut 22', and the opening and closing plate 7 is pulled by pulling the operation straps 16 and 16 'in the above state. (7 ') is the opening and closing plate (7) (7') which is opened downward from the bent groove (701, 702) as the starting point of the dotted arrow of Figure 3 and released when the pull-up of the actuation string (16, 16 '). ) Is closed by the pulling force of the spring 13, the present invention is fixed to the recessed portion 101 formed by the lower protrusion (1B) by inserting the packing (4) to close the opening and closing plate (7) (7 ') Close to the seam packing (4) Since the air is not circulated into and out of the gap as in the prior art, it is possible to keep the temperature inside the plastic house well at a temperature suitable for crop growth, and also to the upper part of the cylindrical window frame (1), the non-limbing plate (5). Therefore, when raining, water falling on the raining plate 5 flows into the space part 6 'and flows down the outer surface of the drain hole 6A and the cylindrical window frame 1, and at the opening of the cylindrical window frame 1 When the rain does not fall and the rain falls, the opening and closing plate (7) (7 ') can be opened and ventilated freely. Also, the opening and closing plate (7) (7') is opened in a "∧" downward, opening and closing plate (7 When opening 7 '), the cold air flowing into the plastic house is hit by the opening and closing plate (7) (7') and spread evenly in the ceiling of the plastic house. Crops in plastic houses There is less to worry about the unbalanced growth.
또한 한쌍의 비닐을 일정한 간격이 유지되게 이중으로 비닐(19)(19')으로 덮어 비닐하우스를 구성시에는 외측비닐(19)은 돌환(2)에, 내측비닐(19')은 돌환(3)에 밀착되므로 비닐하우스를 단일비닐(19) 및 한쌍의 비닐(19)(19')로 구성시에도 구애받음없이 적용시킬 수 있는 효과가 있는 매우 유용한 고안이다.In addition, when the vinyl house is covered by double covering the pair of vinyls to maintain a constant gap, the outer vinyl (19) is in the ring (2), the inner vinyl (19 ') is in the ring (3) Since it is in close contact with the vinyl house is a very useful design that can be applied without regard to the vinyl house when composed of a single vinyl (19) and a pair of vinyl (19, 19 ').
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960040626U KR19980027671U (en) | 1996-11-16 | 1996-11-16 | Ventilation windows in plastic house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960040626U KR19980027671U (en) | 1996-11-16 | 1996-11-16 | Ventilation windows in plastic house |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR19980027671U true KR19980027671U (en) | 1998-08-05 |
Family
ID=53983745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960040626U KR19980027671U (en) | 1996-11-16 | 1996-11-16 | Ventilation windows in plastic house |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR19980027671U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030086362A (en) * | 2002-05-04 | 2003-11-10 | 삼주기전 주식회사 | A ventilating device |
| KR100818667B1 (en) * | 2007-02-15 | 2008-04-03 | 김양심 | System for stirring and ventilating air for greenhouse |
| CN115892342A (en) * | 2022-12-22 | 2023-04-04 | 无锡市海联船舶装备有限公司 | Naval vessel high strength ventilation window convenient to installation |
-
1996
- 1996-11-16 KR KR2019960040626U patent/KR19980027671U/en active IP Right Grant
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030086362A (en) * | 2002-05-04 | 2003-11-10 | 삼주기전 주식회사 | A ventilating device |
| KR100818667B1 (en) * | 2007-02-15 | 2008-04-03 | 김양심 | System for stirring and ventilating air for greenhouse |
| CN115892342A (en) * | 2022-12-22 | 2023-04-04 | 无锡市海联船舶装备有限公司 | Naval vessel high strength ventilation window convenient to installation |
| CN115892342B (en) * | 2022-12-22 | 2023-11-07 | 无锡市海联船舶装备有限公司 | Ship high-strength ventilation window convenient to install |
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