KR102182942B1 - Ventilating apparatus for ceiling and method for ventilating greenhouse using the same - Google Patents

Abstract

A ventilation apparatus for a ceiling comprises: a casing configured to be coupled to a greenhouse ceiling and having opened both side surfaces; a blower fan disposed in the casing and configured to generate the flow of air from one side surface of the casing to the other side surface thereof; a driving part configured to rotate the blower fan; and a cover part configured to cover the other side surface of the casing. At this time, the cover part is connected to the casing by at least one fixing screw and is configured to be raised during an operation of the blower fan to form a ventilation hole between the casing and the cover part. For example, the cover part is pushed up and raised by the pressure of the flow of air formed by the operation of the blower fan. When the ventilation apparatus for a ceiling is used, if the blower fan of the ventilation apparatus is operated, the cover part is raised by the air pressure or the operation of the driving part, and a ventilation hole for discharging air is formed. If the operation of the blower fan is stopped, the cover part is lowered, and the ventilation hole is closed, and accordingly, an unnecessary temperature drop is prevented and an optimum temperature is maintained while the air in the greenhouse is properly discharged to the outside.

Description

Ventilation system for ceiling and greenhouse ventilation method using the same {VENTILATING APPARATUS FOR CEILING AND METHOD FOR VENTILATING GREENHOUSE USING THE SAME}

The embodiments are directed to a ceiling ventilation device and a greenhouse ventilation method using the same, and more specifically, when the ventilation fan of the ventilation device is operated, the cover portion of the ventilation device rises to form a ventilation opening for air discharge, and the ventilation fan When the operation is stopped, the cover part is lowered and the ventilation opening is closed, so that the technology related to the ceiling ventilation device is capable of efficient ventilation.

In general, facilities such as a green house, a greenhouse, and a barn (hereinafter referred to as'greenhouse' in this specification) are equipped with ventilation ports to ventilate the internal air. These vents allow the air inside the facility and the air outside the facility to circulate using natural wind flow, and the temperature and humidity inside the greenhouse are controlled by the natural circulation of air.

However, the ventilation openings used in the past are merely openings that communicate the interior and exterior of the facility, and simply installing the ventilation openings in the facility cannot create the internal environment of the facility as desired. Accordingly, in recent years, a method of actively creating an internal environment of a facility by connecting a ventilating device to a ventilation port and forcibly circulating air has been used. For example, Korean Patent Publication No. 10-0995648 discloses a ventilator for a house for remotely controlling an environment inside and outside the house.

However, since the conventional ventilating device operates while manually opening and closing the ventilator formed in the greenhouse, there is a problem in that air circulation efficiency by the ventilating device is low when the ventilator cannot be opened or closed in accordance with the operation of the ventilating device. In addition, Korean Patent Publication No. 10-0995648 discloses a ventilator in which the vent is opened or closed by a double wing, but this is to seal the opening by a pair of overlapping wings, so it is difficult to completely seal the vent when closing the vent. There is a disadvantage that it is difficult to smoothly discharge the air when the ventilation port is opened.

Registered Patent Publication No. 10-1682566

According to an aspect of the present invention, when the ventilation fan of the ventilation device is operated, the cover portion of the ventilation device is raised by air pressure or operation of the driving unit, thereby forming a ventilation opening for air discharge, and when the operation of the blowing fan is stopped, the cover portion It is possible to provide a ventilating device for a ceiling and a greenhouse ventilation method using the same, in which the ventilation opening is closed by descending.

A ceiling ventilation device according to an embodiment includes a casing configured to be coupled to a greenhouse ceiling and having both sides open; A blowing fan disposed in the casing and configured to generate an air flow from one side of the casing to the other side; A driving unit configured to rotate the blowing fan; And a cover portion configured to cover the other side of the casing.

In this case, the cover portion is connected to the casing by one or more fixing screws, and is further configured to be raised when the blowing fan is operated to form a ventilation opening between the casing and the cover portion.

In one embodiment, the cover is further configured to rise by the air pressure formed by the rotation of the blowing fan.

In one embodiment, the casing, the cover portion is coupled to the first portion having a first diameter; And a second portion accommodating the blowing fan and having a second diameter larger than the first diameter.

A ceiling ventilation device according to an embodiment includes: a fixing member coupled to an outer circumference of the casing and including a groove; And an elastic member inserted into the groove to couple the vinyl film on the surface of the greenhouse to the fixing member.

In one embodiment, the fixing member further includes one or more protrusions protruding into the groove to prevent separation of the elastic member.

In one embodiment, the casing is formed on the inner surface of the casing and includes at least one receiving portion having a through groove. In this case, the cover portion includes at least one protruding portion protruding from the cover portion to be inserted into the receiving portion, and at least one fixing screw coupled to each of the at least one protruding portion and extending into the through hole.

In one embodiment, the fixing screw is configured such that an end of the fixing screw inserted into the through hole is larger than that of the through hole and does not deviate from the through hole.

A greenhouse ventilation method according to an embodiment includes the steps of operating a blower fan of the ventilating device to generate air flow from one side of the casing of the ventilating device coupled to the ceiling of the greenhouse to the other side; Raising a cover configured to cover the casing; And discharging the greenhouse air to the outside through the space between the raised cover and the casing.

In one embodiment, the step of raising the cover portion includes pushing up the cover portion by air pressure generated by rotation of the blowing fan.

The greenhouse ventilation method according to an embodiment further includes the step of stopping the operation of the blowing fan so that the cover part descends to seal the casing.

According to the ventilating device for a ceiling and a greenhouse ventilation method using the same according to an aspect of the present invention, when the ventilating fan of the ventilating device is operated, the cover of the ventilating device is raised by air pressure or the operation of the driving unit, so that the vent for air discharge It is formed, and when the operation of the blowing fan is stopped, the cover part is lowered and the ventilation opening is closed, thereby properly discharging the greenhouse air to the outside, preventing unnecessary temperature drop and maintaining the optimum temperature.

In addition, the ceiling ventilation device according to an aspect of the present invention is easily coupled to the ventilation hole formed in the greenhouse ceiling, and when the vinyl in the greenhouse needs to be replaced after the installation of the ceiling ventilation device, it is necessary to remove and reinstall the ventilation device. There is an advantage of being able to replace the vinyl on top of the ceiling ventilator with the lid closed without it.

1 is a perspective view of a ceiling ventilation device according to an embodiment.
FIG. 2 is a bottom perspective view of the ventilation device for ceilings shown in FIG. 1.
3 is an exploded perspective view of the ventilation device for a ceiling shown in FIG. 1.
4 is an exemplary cross-sectional view of a state in which the ventilation device for a ceiling according to an embodiment is coupled to a greenhouse ceiling.
FIG. 5 is a cross-sectional view of the ventilating device for the ceiling shown in FIG. 4 in an open state.
6 is an enlarged view of part A of FIG. 5.
7 is a block diagram of a ventilation device for a ceiling according to an embodiment.
8 is a flow chart of a greenhouse ventilation method according to an embodiment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings.

When a part is referred to herein as being "on" another part, it may be directly on top of another part, or other parts may be involved in between. In contrast, when a part is referred to as being "directly above" another part, no other part is involved in between.

In the present specification, terms such as first, second, and third are used to describe various parts, components, regions, layers, and/or sections, but are not limited thereto. These terms are only used to distinguish one part, component, region, layer or section from another part, component, region, layer or section. Accordingly, a first part, component, region, layer or section described below may be referred to as a second part, component, region, layer or section without departing from the scope of the present invention.

The terminology used in this specification is for referring only to specific embodiments and is not intended to limit the present invention. Singular forms as used herein also include plural forms unless the phrases clearly indicate the opposite. The meaning of “comprising” as used in the specification specifies a specific characteristic, region, integer, step, action, element and/or component, and the presence of another characteristic, region, integer, step, action, element and/or component, or It does not exclude additions.

In the present specification, terms indicating a relative space such as "below" and "above" may be used to more easily describe the relationship between one part and another part shown in the drawings. These terms are intended to include other meanings or operations of the device in use together with their intended meaning in the drawings. For example, if the device in the drawing is turned over, certain parts described as being "below" other parts are described as being "above" other parts. Thus, the exemplary term “down” includes both up and down directions. The device can be rotated by 90° or by other angles, and terms denoting relative space are interpreted accordingly.

Although not defined differently, all terms including technical and scientific terms used in the present specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms defined in a commonly used dictionary are additionally interpreted as having a meaning consistent with the related technical literature and the presently disclosed content, and are not interpreted in an ideal or very formal meaning unless defined.

1 is a perspective view of a ceiling ventilation device according to an embodiment, and FIG. 2 is a bottom perspective view of the ceiling ventilation device shown in FIG. 1.

1 and 2, the ventilation device for a ceiling according to this embodiment includes a casing 10, a cover part 50 covering one side (eg, upper part) of the casing 10, and the casing ( 10) and a blower fan 20 located within, and a driving unit 40 for rotating the blower fan 20. For example, the driving unit 40 may be a motor operated by electric power.

The casing 10 is open on both sides, and when the blower fan 20 accommodated therein is driven, air flow from one side (eg, lower end) of the casing to the other side (eg, upper end) is generated. At this time, the side of the casing 10 in the direction in which air flows by the operation of the blowing fan 20 is covered with a cover part 50, and when the blowing fan 20 is operated, by air pressure or a separate driving means By lifting the cover part 50, a ventilation port capable of discharging air may be formed. This will be described in detail later.

In one embodiment, a groove 11 is formed on the upper surface of the casing 10. The groove 11 is configured to collect in the groove 11 when the surrounding water flows down, and serves to prevent water from seeping into the inside of the ceiling ventilation device.

In one embodiment, the ceiling ventilation device further includes a fixing member 55 coupled to the casing 10 and an elastic member 60 inserted into the inside of the fixing member 55. When the fixing member 55 and the elastic member 60 are coupled to the ceiling of a greenhouse such as a vinyl house, a film made of vinyl outside the greenhouse is inserted into the groove of the fixing member 55 and the casing 10 It is a part to be combined with.

In one embodiment, the ceiling ventilation device further includes an air guide 30 located on one side of the casing 10. For example, the lower portion of the casing 10 includes an edge formed wider than other portions, and the air guide 30 may be fixed to the edge using one or more screws 300. As shown in Figure 2, the air guide 30 includes one or more openings 310 through which air can pass, so that the air under the casing 10 is sucked upward when the blowing fan 20 is operated. Make it possible.

In one embodiment, the ceiling ventilation device further includes one or more connection pipes 100 formed outside the casing 10. The connection pipe 100 is coupled to the casing 10 by screws or the like, and may be used for installing a ceiling ventilation device in a greenhouse by fastening the ceiling ventilation device to a frame of a greenhouse such as a green house.

3 is an exploded perspective view of a ventilation device for a ceiling according to an embodiment.

3, an air guide 30 and a driving part 40 are coupled to one side 101 of the casing 10 of the ceiling ventilation device according to the present embodiment, and the other side 102 of the casing 10 ) Is coupled to the cover portion 50. In one embodiment, the fixing member 55 is further coupled to the outer periphery of the casing 10, and the fixing member 55 may be a ring-shaped member into which the casing 10 is inserted into the fixing member 55. .

The fixing member 55 may include a groove recessed inward, and the elastic member 60 may be inserted into the groove of the fixing member 55. The elastic member 60 is inserted into the groove of the fixing member 55 by placing a vinyl film (not shown) between the fixing member 55 and serves to fix the vinyl film so as not to be separated by an elastic force. For example, the elastic member 60 may be a wire having a curved shape in an uneven shape, but is not limited thereto.

The blowing fan 20 is accommodated in the casing 10, is coupled to the rotation shaft 400 of the driving unit 40, and rotates by the operation of the driving unit 40, so that the inside of the casing 10 from the bottom of the air guide 30 Air flow in the direction toward the cover part 50 is created through. For example, the drive unit 40 is disposed so that the rotating shaft 400 passes through the air guide 30 and is coupled to the blowing fan 20, and can be coupled to the air guide 30 using the coupling screw 410. .

In one embodiment, the blowing fan 20 may be a four-leaf fan having four blades, but is not limited thereto, and the blowing fan 20 may include more or fewer blades.

The casing 10, the air guide 30, the cover part 50, and the fixing member 55 may be made of a synthetic resin material that is easy to form, and the blowing fan 20 may have a blade made of metal. In addition, each of the casing 10, the air guide 30, the cover part 50, and the fixing member 55 may be made of the same or different materials. The above-described material is illustrative and is not limited thereto.

In one embodiment, the casing 10 includes a plurality of regions of different diameters. For example, the casing 10 includes a first part 110 located in a direction in which the cover part 50 is coupled, and a first part 110 located below the first part 110 and receiving a blowing fan 20. It may include two parts 120. In this case, the second portion 120 may be configured to have a larger diameter than the first portion 110. As a result, when the blowing fan 20 is driven, the air pressure increases toward the top of the casing 10, so that it may be easier to lift the cover part 50 by the air pressure.

4 is an exemplary cross-sectional view illustrating a state in which the ventilation device for a ceiling is coupled to a greenhouse ceiling according to an embodiment, and FIG. 5 is a cross-sectional view illustrating a state in which a ventilation port is opened in the ventilation device for a ceiling illustrated in FIG. 4.

4 and 5, the ventilation device for the ceiling is coupled to an opening formed in the ceiling of a greenhouse such as a green house, and at this time, the film 1 covering the greenhouse surface is inserted into the ring-shaped fixing member 55. Can be combined. Therefore, while the opening of the greenhouse ceiling can be sealed using the ceiling ventilation device, even when the external vinyl film of the vinyl house is replaced, the existing film 1 is simply removed without the need to remove and reinstall the ceiling ventilation device. By removing it from the fixing member 55 and inserting a new film into the fixing member 55, it is possible to replace the vinyl over the ventilation device for the ceiling, so that management is easy.

When the blowing fan 20 is operated in the state shown in FIG. 4, air flow from the bottom to the top is formed by the blowing fan 20, and as a result, the cover part 50 is formed as shown in FIG. It rises upward. The space between the raised cover part 50 and the casing 10 functions as a ventilation port 70 for public discharge, and the air inside the greenhouse under the ceiling ventilation device is ventilated by the ventilation fan 20. ) Can be discharged to the outside.

In order to facilitate the above operation, in one embodiment, the casing 10 has a first portion 110 having a first diameter D1 and a second diameter D2 greater than the first diameter D1. It includes a second portion 120. The blowing fan 20 is accommodated in the second part 120 of the casing 10, and as the air flow generated by the blowing fan 20 moves upward, air due to the reduced diameter of the first part 110 The flow rate may be further increased, and the cover part 50 may be pushed upward by the air flow using this.

The cover portion 50 is coupled to the casing 10 using a fixing screw 550 so as not to completely separate from the casing 10 even in the elevated state. In one embodiment, the casing 10 is formed on the inner surface of the casing 10 and includes one or more receiving portions 150 having through holes, and the cover portion 50 is a direction in which the casing 10 is coupled ( That is, it protrudes downward) and includes one or more protrusions 500 configured to be inserted into the receiving part 150. In this case, the fixing screw 550 has one end coupled to the protrusion 500 and the other end may extend to pass through the through hole of the receiving part 150.

The screw head of the end of the fixing screw 550 passing through the through hole has a larger diameter than the through hole, so that the fixing screw 550 does not deviate from the through hole. As a result, as shown in FIG. 4, in a state in which the blowing fan 20 does not operate, the screw head of the fixing screw 550 is located under the receiving part 150, and the edge of the cover part 50 is the casing ( 10) It is inserted into the groove formed in the outer circumference of the upper surface and fixed so that the cover part 50 does not move. Therefore, the inside and outside of the greenhouse are sealed so that the outside environment does not affect the inside of the greenhouse.

On the other hand, when the blowing fan 20 operates, the blades of the blowing fan 20 rotate to generate wind, and the wind is discharged to the upper side of the casing 10 so that the wind pressure acts on the cover part 50. Accordingly, as shown in FIG. 5, the cover portion 50 is raised to open the upper opening of the casing 10, and the air inside the greenhouse fills the space between the casing 10 and the cover portion 50. Is discharged to the outside of the greenhouse. At this time, the protrusion 500 of the cover part 50 moves upward while exiting from the receiving part 150, and the fixing screw 550 coupled to the protrusion 500 also moves upward. However, since the through hole of the receiving part 150 is formed smaller than the head of the fixing screw 550, the head of the lower end of the fixing screw 550 is caught by the receiving part 150 and thereby the cover part ( It is prevented that the excessive rise of 50) or the cover part 50 is separated from the casing 10.

At this time, the distance (D) between the raised cover part 50 and the casing 10 (that is, the part corresponding to the ventilation port 70) uses the rotational speed of the blowing fan 20 by the drive part 40, etc. So it can be properly adjusted.

Thereafter, when the operation of the blowing fan 20 is stopped, the wind pressure acting on the cover part 50 disappears, so the cover part 50 descends by its own load and is recombined to the upper side of the casing 10, thus The inside and outside of the greenhouse is sealed.

In the ceiling ventilation device according to the embodiment described above, as shown in FIG. 4, in a state in which the blowing fan 20 is not operated, the cover part 50 exposed above the greenhouse surface is extremely small, while the blowing fan ( When operating 20), there is an advantage that the cover part 50 is automatically opened by wind power so that a ventilation passage can be formed only while ventilation is required.

6 is an enlarged view of portion A shown in FIG. 5. For convenience of explanation, a combination of a ceiling ventilation device and a vinyl film will be described with reference to FIGS. 1 and 6.

In this embodiment, the ceiling ventilation device includes a fixing member 55 coupled to the outer peripheral portion of the casing 10. For example, the fixing member 55 is formed in a ring shape and coupled to the casing 10 so as to surround the outer surface of the casing 10, and the fixing member 55 has the same height as the upper surface of the casing 10 Alternatively, it may be coupled to the casing 10 so as to be located at a low height by a predetermined interval from the upper surface of the casing 10.

The fixing member 55 includes a groove formed by recessing an upper surface thereof, and the elastic member 60 may be inserted into the groove of the fixing member 55. The elastic member 60 may be a wire or the like that is curved in an uneven or other suitable shape in order to increase the repulsion force against bending, and a force is applied while the vinyl film 1 is placed in the groove of the fixing member 55. In addition, by pushing the elastic member 60 into the groove of the fixing member 55, the vinyl film 1 can be fixed between the fixing member 55 and the elastic member 60.

In one embodiment, the fixing member 55 includes one or more protrusions 56 protruding into the groove of the fixing member 55. For example, the protrusions 56 may be disposed at regular intervals along the groove and may be formed to protrude inward from both sidewalls of the groove. The protrusion 56 may be formed to be inclined in one direction to prevent the elastic member 60 from being separated from the groove while making it possible to push the elastic member 60 into the groove from the outside. For example, the protrusion 56 may have a shape in which the protruding length increases from the top to the bottom of the fixing member 55.

7 is a block diagram of a ventilation device for a ceiling according to an embodiment.

Referring to FIG. 7, the ceiling ventilation apparatus according to the present embodiment includes a sensor unit 80 and a control unit 90 together with the blowing fan 20 and the driving unit 40 described above with reference to FIGS. 1 to 6. do. In addition, in one embodiment, the ventilation device for the ceiling may further include a cover driving unit 45 for electrically controlling the rising and falling of the cover unit.

The sensor unit 80 and the control unit 90 described herein may be entirely hardware, or may have a side that is partially hardware and partially software. For example, the sensor unit 80 and the control unit 90 may collectively refer to a hardware device for sending and receiving data of a specific format and content in an electronic communication method, and software driven by the corresponding hardware. For example, the hardware here may be a data processing device including a CPU or other processor. In addition, software driven by hardware may refer to an executing process, an object, an executable file, a thread of execution, a program, and the like.

The sensor unit 80 may include one or more temperature sensors for measuring the internal and/or external temperature of a greenhouse such as a green house. The temperature is measured using a temperature sensor installed in each area inside and/or outside of the greenhouse, and the measured temperature is transmitted to the controller 90 so that the temperature inside the greenhouse is maintained at the set temperature under the control of the controller 90. can do. In addition, in an embodiment, the sensor unit 80 may further include a temperature sensor for measuring an operating temperature of the blowing fan 20 to prevent overheating of the blowing fan 20.

In addition, in an embodiment, the sensor unit 80 may further include other types of sensors for measuring the environment inside and/or outside the greenhouse in addition to temperature. For example, the sensor unit 80 may further include a humidity sensor for measuring humidity inside and/or outside the greenhouse, or a wind speed sensor for measuring wind speed inside and/or outside the greenhouse.

The control unit 90 compares data such as temperature, humidity, and wind speed measured by the sensor unit 80 with reference values such as temperature, humidity, and wind speed set in advance, so that the environment inside the greenhouse is blown to maintain the preset environment. It is possible to control the operation of the fan 20. That is, the control unit 90 may automatically operate the blower fan 20 when the difference between the temperature or humidity inside the greenhouse and the desired temperature or humidity is greater than or equal to a certain level. Alternatively, the control unit 90 may discharge air inside a greenhouse, such as a green house, to the outside as much as possible by operating the blower fan 20 when a wind speed of more than a certain level, for example, a wind speed of 20 m/s or more during a typhoon period, is detected by an external sensor have. In this case, the vinyl on the surface of the greenhouse is closely attached to the inside and is pulled tightly, so it is possible to prevent damage to vinyl, frame and crops even in strong winds.

The control of the blowing fan 20 by the control unit 90 may be performed automatically. However, in another embodiment, the controller 90 includes a communication module (not shown) for remotely receiving a user command, so that the user can remotely input a user command to control the blowing fan 20 when necessary. You may.

In one embodiment, the cover driving unit 45 serves to control the raising or lowering driving of the cover unit described above with reference to FIGS. 1 to 6 in synchronization with the operation of the blowing fan 20 by the control unit 90. For example, the cover driving unit 45 includes a linear motor, and when the blowing fan 20 is operated, the cover is raised to allow ventilation, and when the blowing fan 20 stops operating, the cover is lowered. Vents can be closed. However, this is exemplary, and when the cover is opened only by wind power of the blowing fan 20, the cover driver 45 does not need to be separately provided.

8 is a flow chart of a greenhouse ventilation method according to an embodiment.

Referring to FIG. 8, first, a blower fan of the ceiling ventilation device may be operated (S1). When the blower fan is operated, the cover part of the ceiling ventilation device rises by the air flow created by the rotation of the blower fan, and thus, a ventilation opening corresponding to the space between the casing of the ceiling ventilation device and the lifted cover part is formed. It becomes (S2), and the air inside the greenhouse can be discharged to the outside through the ventilation opening (S3).

In addition, when ventilation to the greenhouse is not required or when it is necessary to block the inside and outside of the greenhouse (e.g., when chemicals are sprayed in the greenhouse, etc.), stop the blower fan (S4), and the air pressure by lifting the cover Since disappears, the cover part comes down again and the above-described ventilation port is closed (S5). Accordingly, it is possible to prevent the environment outside the greenhouse from unnecessarily influencing the inside of the greenhouse, and it is possible to improve the control effect by preventing the agent sprayed inside the greenhouse from escaping to the outside.

In one embodiment, the ceiling ventilation device measures the operating temperature of the blower fan by means of a sensor and stops the operation of the blower fan to prevent overheating when the operating temperature of the blower fan is higher than a preset threshold even if ventilation is not completed. It may be configured to Operation of the blowing fan for preventing overheating may be performed using a bimetal switch, but is not limited thereto.

The ceiling ventilation device according to the above-described embodiments can automatically control the blowing fan according to changes in the environment inside and outside the greenhouse, such as a green house, thereby minimizing heat loss of the greenhouse, and to wind power only when the blowing fan is operated. By raising the cover to allow ventilation, there is an advantage in that the greenhouse air can be properly discharged to the outside while minimizing changes in the greenhouse environment such as unnecessary temperature drops and maintaining the desired environment.

In addition, the ceiling ventilation device according to the embodiments minimizes the volume of the cover part exposed to the outside of the greenhouse, prevents snow or rainwater from entering the greenhouse, and minimizes the effect of the external environment on the inside of the greenhouse. I can. In addition, since the cover is lifted up and operated only when the blowing fan is in operation, it is possible to easily check whether the blowing fan is operating from the outside, and the structure is simplified by allowing the cover to open and close the top of the casing without installing the inner cover. Manufacturing cost can be reduced and fixed generation can be reduced.

In addition, in the ceiling ventilation device according to the embodiments, as the fixing screw coupled to the protrusion of the cover is inserted so as to be elevating into the through groove of the receiving portion on the inner surface of the casing, the cover moves only in the vertical direction and penetrates the fixing screw. It is possible to prevent the cover part from being separated from the ventilation device by preventing the fixing itself from being separated from the through groove through the shape of the groove.

Further, in the ventilation device for ceiling according to the embodiments, the vinyl film of the vinyl house is coupled to the outside of the casing of the ventilation device using a ring-shaped fixing member, so when replacing the vinyl, it is necessary to remove and reinstall the ceiling ventilation device. There is an advantage that the vinyl can be replaced over the ceiling ventilation device by inserting the new vinyl into the fixing member after removing the existing vinyl.

The present invention described above has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those of ordinary skill in the art will understand that various modifications and variations of the embodiments are possible therefrom. However, such modifications should be considered to be within the technical protection scope of the present invention. Therefore, the true technical scope of the present invention should be determined by the technical spirit of the appended claims.

Claims (10)

A casing configured to be coupled to the greenhouse ceiling and having both sides open;
A blowing fan disposed in the casing and configured to generate an air flow from one side of the casing to the other side;
A driving unit configured to rotate the blowing fan;
A cover part configured to cover the other side of the casing;
A fixing member coupled to the outer peripheral portion of the casing to surround the outer surface of the casing and including a groove formed by recessing an upper surface; And
Including an elastic member inserted into the groove of the fixing member to couple the vinyl film on the surface of the greenhouse to the fixing member,
The casing includes one or more receiving portions formed on the inner surface of the casing and having a through groove,
The cover part is coupled to each of the at least one first protrusion protruding from the cover part to be inserted into the receiving part, and one end is coupled to the first protrusion, and the other end is coupled to the receiving part. It includes at least one fixing screw extending through the through hole of the negative,
The cover portion is connected to the casing by the one or more fixing screws, and is further configured to rise when the blowing fan is operated to form a ventilation opening between the casing and the cover portion,
The fixing member includes at least one second protrusion protruding into the groove from both sidewalls of the groove of the fixing member, and each of the at least one second protrusion increases in protruding length from top to bottom of the fixing member. Ventilation device for the ceiling is formed inclined so as to.
The method of claim 1,
The ceiling ventilation device is further configured to increase by the air pressure formed by the rotation of the blower fan.
The method according to claim 1 or 2,
The casing,
A first portion coupled to the cover portion and having a first diameter; And
Ventilation apparatus for a ceiling including a second portion having a second diameter larger than the first diameter is accommodated in the blower fan.
delete delete delete The method of claim 1,
The fixing screw is configured such that the end of the fixing screw inserted into the through hole is larger than that of the through hole and does not deviate from the through hole.
It is configured to be coupled to the ceiling of the greenhouse, a casing, a blowing fan disposed in the casing, a cover portion configured to cover the casing, a groove coupled to the outer periphery of the casing so as to surround the outer surface of the casing and the upper surface is recessed Preparing a ventilation device including a fixing member including a, and an elastic member inserted into the groove of the fixing member;
Inserting the vinyl film on the surface of the greenhouse into the groove of the fixing member, and then attaching the vinyl film to the casing by inserting the elastic member into the groove;
Operating the blower fan of the ventilating device to generate an air flow from one side of the casing of the ventilating device to the other side;
Raising a cover configured to cover the casing; And
Including the step of discharging greenhouse air to the outside through the space between the raised cover and the casing,
The casing includes one or more receiving portions formed on the inner surface of the casing and having a through groove,
The cover part is coupled to each of the at least one first protrusion protruding from the cover part to be inserted into the receiving part, and one end is coupled to the first protrusion, and the other end is coupled to the receiving part. It includes at least one fixing screw extending through the through hole of the negative, connected to the casing by the at least one fixing screw,
The fixing member includes at least one second protrusion protruding into the groove from both sidewalls of the groove of the fixing member, and each of the at least one second protrusion increases in protruding length from top to bottom of the fixing member. Is formed to be inclined to
The step of bonding the vinyl film to the casing comprises preventing the elastic member from being separated from the groove of the fixing member by the second protrusion.
The method of claim 8,
The step of raising the cover portion, the greenhouse ventilation method comprising the step of pushing up the cover portion by air pressure formed by the rotation of the blowing fan.
The method of claim 8,
The greenhouse ventilation method further comprising the step of stopping the operation of the blowing fan so that the cover part descends to seal the casing.

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