CN108885024B - Cutter for exhaust fan - Google Patents
Cutter for exhaust fan Download PDFInfo
- Publication number
- CN108885024B CN108885024B CN201780019893.6A CN201780019893A CN108885024B CN 108885024 B CN108885024 B CN 108885024B CN 201780019893 A CN201780019893 A CN 201780019893A CN 108885024 B CN108885024 B CN 108885024B
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- Prior art keywords
- shaft
- cutting
- frame
- air
- base
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- 239000007888 film coating Substances 0.000 description 4
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- 230000000903 blocking effect Effects 0.000 description 2
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- 230000005494 condensation Effects 0.000 description 2
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- 238000005859 coupling reaction Methods 0.000 description 2
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- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 206010060904 Freezing phenomenon Diseases 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- 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
- F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
- F04D25/14—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures and having shutters, e.g. automatically closed when not in use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
- F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
-
- 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
- F24F7/007—Ventilation with forced flow
- F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Flow Control Members (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a cutter combined on an exhaust fan, belonging to the technical field of exhaust fans, in particular to a cutter for an exhaust fan, which is characterized in that an air channel for discharging internal air to the outside is formed by a frame which is arranged on an air outlet of an exhaust fan shell of a fan which sucks the internal air by using the rotation of a motor in an extending way, a cutting plate which is movably arranged on a central shaft at the center of the frame is pushed to the rear part by the pressure of the discharged air so as to discharge the internal air to the outside, and when the fan does not rotate, the cutting plate is connected with a cutting ridge which is convexly formed on the inner side surface of the frame and seals the air channel, thereby cutting off the internal heat outflow and the external air inflow.
Description
Technical Field
The invention belongs to the technical field of exhaust fans, and relates to a cutter combined on an exhaust fan, in particular to a cutter for an exhaust fan, which is characterized in that an air channel for discharging internal air to the outside is formed by a frame which is arranged on an air outlet of an exhaust fan shell of a fan which sucks the internal air by using the rotation of a motor in an extending way, a cutting plate which is movably arranged on a central shaft at the center of the frame is pushed to the rear part by the pressure of the discharged air so as to discharge the internal air to the outside, and when the fan does not rotate, the cutting plate is connected with a cutting ridge which is convexly formed on the inner side surface of the frame and seals the air channel, so that the internal heat outflow and the external air inflow are cut off.
Background
Generally, a fan is installed at a hole through which a wall or a window is perforated, and the fan is rotated by a motor to discharge internal air to the outside.
Such a discharge fan has a drawback in that cold outside air, dust, noise, bad smell, etc. are introduced into the building through the holes of the discharge fan while not operating, and hot air in the building is discharged to the outside.
And the air outlets of the toilets and kitchens of the buildings are communicated with each other at the upper and lower layers, so that the odor, the smoke, the food taste, various parasitic harmful bacteria and the like enter and exit the upper and lower layers, and inconvenience is brought to life.
In order to solve these problems, a shut-off device for a discharge fan of korean registered patent No. 10-1182542 smoothly discharges air discharged from the discharge fan to the outside, and seals a discharge passage of the discharge fan when not in use to prevent heat loss inside the discharge fan and reverse flow of outside air. The reverse flow preventing damper for the exhaust fan of korean registered patent No. 10-1188851 is provided between the duct and the exhaust outlet of the exhaust fan to prevent the reverse flow of air, and the power damper integrated exhaust fan of korean registered patent No. 10-0954259 prevents the reverse flow of harmful gas from the outside.
However, in the conventional baffle type cutting device, the baffle plate is formed of a thin resin plate, so that the heat retention is weak, and the baffle type cutting device hardly plays a role in cold regions.
The leakproofness of current baffle also does not guarantee, uses the baffle in the serious china of haze, also can not block the haze that flies into the room completely, consequently also has indoor the danger that receives the haze pollution.
< Prior Art document >
< patent document >
(patent document 1) KR 10-1182542 (2012.09.06);
(patent document 2) KR 10-1188851 (2012.09.28);
(patent document 3) KR 10-0954259 (2010.04.14).
Disclosure of Invention
Technical problem
To solve the above problems, the present invention provides a cutter for an exhaust fan, which forms an air passage by a frame extended from an air outlet of an exhaust fan housing provided with a fan for sucking internal air by rotation of a motor, and further, a cutting plate movably installed on a center shaft of the center of the frame is pushed to the rear by the discharged air pressure to be separated from a cutting ridge and discharge the internal air to the outside, and when the fan does not rotate, the cutting plate installed on the center shaft is engaged with the cutting ridge formed on the inner side surface of the frame in a protruding manner and seals the air passage, thereby cutting off the outflow of internal heat and the inflow of external air;
the invention provides a cutter for an exhaust fan, which separates a cutting plate from a cutting ridge and discharges air through the action of a fan rotating for discharging air, and automatically contacts the cutting plate and the cutting ridge to cut off external air when the fan stops running.
The invention provides a cutting board moving under the action of a fan and a fixed cutting ridge which are made of light materials with strong heat preservation performance, and the cutting board and the fixed cutting ridge are in surface contact with each other and the fan does not run, so that the flow of air can be completely cut off, the heat preservation efficiency is high, and the sealing performance is sufficient;
the present invention provides a cutting device for exhaust fan, in which the frames are formed into multiple layers, cutting ridges and cutting plates are provided on each auxiliary frame to cut off air channels, and the inner surfaces of the cutting ridges contacting with the cutting plate surfaces and the shaft holders contacting with the shafts are provided with hot wires to make the hot wires run in stages, thereby ensuring the sealing performance of the air channels and solving the problem of misrun caused by freezing even in a region with heavy smoke or a cold region.
Technical scheme
In order to achieve the above object, the present invention provides a cutter 100 for a ventilator, which is mounted on a ventilator case 10 provided with a fan 12 for sucking in internal air by rotation of a motor 11, and cuts off external air, the cutter including: a frame 110 which is extended from an air outlet 13 of the exhaust fan housing 10 and forms an air passage 111 fixed to an inner wall thereof to discharge the air from the inside; a cut sill 120 of styrofoam heat insulating material or isopink (compressed polystyrene) material formed to protrude from an inner side surface of the frame 110; a central shaft 130 movably disposed at the center of the frame 110; a cutting plate 140 formed in a shape corresponding to the cutting threshold 120, fixedly installed on the center shaft 130 to contact the inclined ground of the cutting threshold 120 with the movement of the center shaft 130, and blocking the air passage 111, and made of styrofoam heat insulating material or isopink (compressed polystyrene) material; the center shaft 130 is provided with a spring 160.
The present invention further includes a shaft holder 150 through which the center shaft 130 is inserted, the frame 110, the cutting sill 120, the center shaft 130, the cutting plate 140, and the shaft holder 150 are formed in multiple layers, the coupling portion 112 of the frame 110 forms a bending device, and the upper and lower ends of the center shaft 130 are coupled by bolts.
The frame 110 of the present invention is formed of an upper base frame 110a and a lower auxiliary frame 110 b; the cutting threshold 120, the center shaft 130, the cutting plate 140 and the shaft holder 150 are respectively formed with a base cutting threshold 120a, a base center shaft 130a, a base cutting plate 140a and a base shaft holder 150a at the upper end, and an auxiliary cutting threshold 120b, an auxiliary center shaft 130b, an auxiliary cutting threshold 140b and an auxiliary shaft holder 150b at the lower end;
the method comprises the following steps: a base shaft holder 150a formed to extend vertically from the lower inner side of the base frame 110a and through which the base center shaft 130a is inserted; a spring support ridge 154 vertically connected to the base pedestal 150 a; and a spring guide 151 vertically connected to the spring support ridge 154 and formed in parallel with the base shaft receiver 150 a;
a fixing frame 152 is provided on the outer peripheral surface of the spring guide 151, and a through hole 153 through which air passes is formed through the fixing frame 152.
The spring 160 of the present invention is located outside the base shaft bracket 150a into which the base center shaft 130a is inserted.
The fixing frame 152 of the present invention is formed in a streamline shape 152a so that the sectional area is widened toward the direction of air discharge; a hot wire is provided on the lower surface of the auxiliary cutting ridge 120b of the auxiliary frame 110b and the inner surface of the auxiliary shaft holder 150 b.
In the base frame 110a of the present invention, a curved surface 131 is formed on the base center shaft 130a so as to protrude integrally with the base center shaft 130a, and an upper portion of the spring 160 inserted into the outside is fixed, and when the center shaft 130 moves, the center shaft 130 moves by a predetermined width until the curved surface 131 reaches an upper head portion of the base shaft holder 150 a.
The cutting plate 140 and the cutting threshold 120 of the present invention are the same material.
Advantageous effects
The cutter for the exhaust fan has the advantages that,
the air channel is formed by the frame which is extended on the air outlet of the exhaust fan shell of the fan which uses the motor to rotate and sucks the internal air, and then the cutting plate which is movably arranged on the central shaft of the frame center is pushed to the rear part by the discharged air pressure to discharge the internal air to the outside;
with the operation of the fan, the cutting plate and the cutting ridge can be automatically combined or separated, and other electrical or mechanical actions are not needed for sealing air;
the cutting plate and the cutting ridge are made of materials with strong heat preservation performance so as to completely cut off the discharge of internal heat;
the cutting plate for blocking the air can be contacted with the surface of the cutting ridge, so that the air flow can be completely cut off when the air flow is not needed;
the frame forms a plurality of layers, the cutting ridges and the cutting plates on each frame cut off air channels in multiple, the cutting ridges of the auxiliary frame and the shaft supports of the auxiliary frame are provided with hot wires, and the hot wires can be controlled to run in stages, so that the loss of internal heat can be reduced to the maximum extent in cold regions, and the problem of misoperation caused by icing is solved.
Drawings
Fig. 1 is a sectional view of a state where a cutoff sill and a cutoff plate are engaged and an air passage is closed according to an embodiment of the present invention;
fig. 2 is a sectional view showing a state where the cutoff sill is separated from the cutoff plate by the rotation of the fan according to the embodiment of the present invention so that the air passage is opened;
FIG. 3(a) is a base frame and a bottom view thereof of an embodiment of the present invention;
FIG. 3(b) is an auxiliary frame and a bottom view thereof of an embodiment of the present invention;
fig. 4 is a sectional view showing a state where the cutter for the exhaust fan is separated from the frame according to the embodiment of the present invention.
Description of the symbols in the drawings
10: a housing of the exhaust fan;
11: a motor;
12: a fan;
13: an air outlet;
100: a cutter for the exhaust fan;
110: a frame;
111: an air passage;
112: a bonding section;
113: a bump;
120: cutting off the bank;
130: a central shaft;
131: a curved surface;
140: cutting off the plate;
150: a shaft support;
151: a spring guide portion;
152: a fixed mount;
153: a through hole;
154: the spring supports the ridge;
160: a spring.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art can easily implement the invention.
As shown in fig. 1 to 4, the cutter 100 for an exhaust fan according to the present invention includes:
a frame 110 in which an air outlet 13 for discharging air is extended and fixed on an inner wall to form an air passage 111 for discharging the internal air to the outside in a discharge fan case 10 provided with a fan 12 which is rotated by a motor 11 and sucks the internal air;
a cutting threshold 120 formed at an inner side surface of the frame 110 in a protruding manner;
a central shaft 130 movably disposed at the center of the frame 110;
a cutting plate 140 formed corresponding to the cutting threshold 120, fixedly installed on the central shaft 130, and connected to the cutting threshold 120 by the movement of the central shaft 130, thereby cutting the air passage 11;
a cross-shaped fixing frame 152 is formed on an inner circumferential surface of the frame 110 to extend vertically from an inner lower end thereof, and the center shaft 130 is protruded by a shaft holder 150 inserted therethrough, and air passes through a through hole 153 formed through the fixing frame 152.
The fan housing 10 is provided at one side thereof with a motor 11 and a fan 12, and at the opposite side thereof with an air discharge port 13, the motor 11 is driven to suck indoor air when the fan 12 is rotated, and the air is discharged from the air discharge port 13 after being rotated inside the spiral fan housing 10.
The frame 110 is extended from the air discharge opening 13, forms an air passage 111 installed in a wall and connecting an indoor space and an outdoor space, and is fixed to the inner wall by using a urethane foam which is firmly fixed to a plurality of protruding protrusions 113. In addition to the polyurethane foam, Polyethylene (PE) foam, Polystyrene (PS) foam, phenol resin (PF) foam, polypropylene (PP) foam, urea resin (UF) foam, Polyimide (PI) foam, and melamine resin (MF) foam may be used as the foam.
The protrusions 113 may reinforce the uniform strength of the cutting threshold 120 formed to protrude from the inner side surface of the frame 110, and 6 pieces of the base frame 110a of the frame 110 closest to the air discharge opening 13, preferably, 9 pieces of the first and second auxiliary frames 110b-1 and 110b-2 continuously disposed at the lower portion of the base frame 110a, but may be changed according to the length of the cutting threshold.
The frame 110, the cutting threshold 120, the center shaft 130, the cutting plate 140, and the shaft holder 150 are formed in a plurality of layers, and a bending means is provided at a coupling portion 112 formed on an outer surface of a lower end of the frame 110, and the bending means couples the base frame 110a, the first auxiliary frame, and the second auxiliary frame (110b-1,110 b-2.) which are continuously arranged, respectively, so that the frame 110 can be used in a plurality of layers.
In the present invention, the frame 110, the cutting ridge 120, the center shaft 130, the cutting plate 140, and the shaft holder 150 are divided into a base provided at an upper portion and an auxiliary provided at a lower end thereof, the base is a rear end of a drawing symbol plus a, and the auxiliary is a rear end of the drawing symbol plus b.
The auxiliary is also referred to in sequence as b-1 at the upper part and b-2 at the lower part.
A cut sill 120 having a thickness gradually thinner toward the center is formed on the inner side of the frame 110 in a protruding manner.
The auxiliary frame 110b has a carbon film coating or a heat ray on the surface where the auxiliary cutting ridge 120b and the auxiliary cutting plate 140b are in contact with each other and the inner surface of the auxiliary shaft holder 150b to cope with the freezing phenomenon.
The cutting ridge 120 has an inclined shape in which the area gradually decreases from the center to the lower portion, and the lower surface is joined to the surface of the cutting plate 140 attached to the center shaft 130 by contact.
The cutting plate 140 is made of the same material as the cutting ridge 120, is formed in a conical shape such as a cone, a square pyramid, or a pentagon pyramid, and is engaged with the lower surface of the cutting ridge 120 formed in a corresponding shape to cut the air passage 111 when the fan 12 is not rotated, and is pushed by the air pressure discharged from the air discharge port 13 to be separated from the cutting ridge 120 to open the air passage 111 when the fan 12 is rotated.
At this time, it is preferable that the cutting threshold 120 and the cutting plate 140 are joined to each other at an angle of 45 degrees, the joining density is high, the separation is easy, and the contact area between the cutting threshold 120 and the cutting plate 140 is large, so that the heat-insulating and sealing effects are enhanced.
The cutting threshold 120 and the cutting plate 140 are heat insulating materials having a strong heat insulating property and a light weight, such as EPS, styrofoam heat insulating material EPS, compression heat insulating material iso-pink, etc., but are not limited thereto.
The center shaft 130 is hollow, that is, the inside is hollow, a base center shaft 130a, a first auxiliary center shaft 130b-1, a second auxiliary center shaft 130b-2, and the like are continuously provided and are bolt-joined to each other, the assembled cutting plate 140 is fixed to the upper portion of the center shaft 130, and the screw bolts are formed on the outer peripheral surfaces of the upper end portions of the auxiliary center shafts 130b-1,130b-2 combined at the lower portion and are inserted into the lower end of the center shaft 130 provided at the upper portion to be combined.
The base center shaft 130a is movably provided at an inner center portion of the base frame 110a, and a center of a base shaft holder 150a vertically extended at a lower end portion of the base frame 110a is penetrated.
The base shaft receiver 150a is formed with a cylindrical hole so that the base center shaft 130a is inserted therethrough, and the base center shaft 130a is movable inside the base shaft receiver 150 a.
The precision of the friction section between the center shaft 130 and the shaft holder 150 is enhanced to enhance the lubricity of the center shaft 130, thereby minimizing the center deviation rate of the cutting plate to the cutting threshold 120.
As shown in fig. 3, the base shaft receiver 150a is installed in a cylindrical shape at the center of the lower end of the base frame 110a, and has a spring support ridge 154 and a spring guide 151 formed on the outer peripheral surface of the lower portion thereof, and a cross-shaped fixing frame 152 is installed on the outer peripheral surface of the spring guide 151, and a through hole 153 for allowing air to pass therethrough is installed through the fixing frame 152.
The shaft holder 150 is fixedly secured to the frame 110 by the fixing bracket 152.
The base center shaft 130a is inserted into the base shaft holder 150a, the spring 160 is inserted into the base shaft holder, the outer peripheral surface of the base shaft holder 150a is bent to form a recessed spring support ridge 154 so that the spring 160 is fixed, and the spring support ridge 154 is bent upward to form a spring guide 151.
The spring support ridge 154 is formed to correspond to a lower end surface of the spring 160, the spring 160 is clamped to firmly support the lower end surface of the spring 160 compressed when the center shaft 130 moves, and the spring guide 151 is parallel to the base shaft holder 150a to prevent the spring 160 from being separated from the spring.
A curved surface 131 formed corresponding to the upper end surface of the spring 160 inserted into the outside of the center shaft 130 and supporting the upper end surface of the spring 160, wherein the curved surface 131 is formed integrally with the base center shaft 130a and supports the lower surface of the cutting plate 140, and when the internal air is discharged, the center shaft 130 is pushed out while pressing the spring 160 inserted into the outside, and at this time, the head of the base shaft holder 150a reaches the curved surface 131, so that the center shaft 130 can move with a certain width.
The holder 152 is formed in a streamline shape 152a so that a cross-sectional area thereof is widened in a direction in which air is discharged, and the holder 152 is configured such that a lower end surface of the cutting plate 140 is brought into contact with the center shaft 130 as the center shaft is pushed, so that air discharged from the through hole 153 can be smoothly discharged without resistance of the protrusion 152 a.
The frame 110 is coupled to an inner wall by polyurethane foam, so that the frame 110 and the inner wall are sealed and air is not moved, and the cutting threshold 120 and the cutting plate 140 are assembled to be closely attached to each other and air is not moved when the fan 12 is not rotated.
The cutting plate 140 is firmly fixed to the central shaft 130 by bolts and nuts, and a rubber washer is added between the bolts and nuts inserted into the central shaft 130 to prevent the bolts and nuts from automatically loosening.
The spring 160 is coated with latex, does not rust even when wetted, and gradually narrows in width from the upper and lower portions toward the center, thereby preventing contact with the spring guide 151. The fixing frame 152b of the auxiliary frame 110b is directly connected to the auxiliary shaft holder 150 b. The height of the auxiliary shaft support 150b is the same as the height of the fixing frame. The curved surface 131b of the central shaft 130b of the auxiliary frame 110b functions only as a support ridge for the auxiliary cutting plate 140 b.
The inner side of the auxiliary shaft holder 150b, i.e., the portion in contact with the auxiliary central shaft 130b, is provided with a hot wire. The heat wire operates in the same manner as the heat wire provided in the auxiliary cutting sill 120b, and the condensed portion can be melted off when the cutting plate 140 cannot move due to condensation.
In the cutter 100 for the exhaust fan, when the fan 12 is not rotated, the cutting plate 140 fixed to the center shaft 130 is engaged with the cutting threshold 120 to seal the air passage 111, when the fan 12 is rotated and the internal air is discharged from the air discharge port 13, the center shaft 130 is pushed by the discharged air pressure to open the cutting plate 140 engaged with the cutting threshold 120, the spring 160 inserted between the cutting plate 130 and the shaft holder 150 is compressed, and the lower end surface of the cutting plate 140 is engaged with the fixing frame 152 to discharge the internal air to the outside through the through hole 153 of the shaft holder 150.
The cutoff device 100 for the exhaust fan is configured such that the motor 11 operates after the power is turned on, the cutoff plate 140 is turned on while the fan 12 is rotated, and when the cutoff plate 140 is not turned on, the control device determines that dew condensation generated due to a large temperature difference between the inside and the outside is frozen, and cuts off the power of the motor 11, so that the hot wire power provided in the auxiliary cutoff sill 120b of the outermost corner of the auxiliary frame and the auxiliary shaft holder 150b of the outermost corner operate.
The present invention may include one or more auxiliary cut ridges 120b and auxiliary shaft holders 150b, and when there is only one auxiliary cut ridge and auxiliary shaft holder, the motor 11 is started after the power is supplied to the hot wire of the auxiliary cut ridge and auxiliary shaft holder
When the auxiliary cutting ridges and the auxiliary shaft holders are provided in plurality, the hot wires of the outermost corner auxiliary cutting ridge and the outermost corner auxiliary shaft holder are firstly electrified to start the power supply of the motor 11, and if the cutting plate 140 is not opened at this time, the hot wires of the outermost corner auxiliary cutting ridge and the outermost corner auxiliary shaft holder and the icing generated by the step-by-step power supply to the hot wires on the outermost corner auxiliary cutting ridge and the outermost corner auxiliary shaft holder which are closer to the indoor direction are removed.
As described above, the auxiliary frame (110b-1,110 b-2) for a cutting device of an exhaust fan according to the present invention includes a carbon film coating or a heat ray on the auxiliary cutting sill 120b and the auxiliary shaft holder 150b, and a control device capable of repeatedly detecting the carbon film coating or the heat ray, and removes the frozen objects between the auxiliary cutting plate 140b and the auxiliary cutting sill 120b, and between the auxiliary center shaft 130b and the auxiliary shaft holder 150 b.
The cutter 100 for the exhaust fan of the present invention forms an air passage 111 through a frame 110 extended on an air outlet 13 of an exhaust fan housing 10 provided with a fan 12 sucking the internal air by the rotation of a motor 11, the central shaft 130 movably provided at the center of the frame 110 is moved by the discharged air pressure to discharge the internal air to the outside, and when the fan 12 is not rotated, a cutting plate 140 fitted to the central shaft 130 is engaged with a cutting ridge 120 formed on the inner side of the frame 110 to seal the air passage 111, thereby cutting off the outflow of the internal hot air and the inflow of the external air.
The cutter 100 for the exhaust fan of the present invention has a plurality of frames 110, and the air passage 111 is multiply blocked by the cutting ridges 120 and the cutting plates 140 of the frames 110, and the lower surface of the auxiliary cutting ridge 120b of the auxiliary frame 110b and the inner surface of the auxiliary shaft holder 150b are provided with a carbon film coating or a hot wire, and the hot wire can be controlled to be activated in stages, so that the sealing and heat retaining properties of the air passage can be ensured even in a cold region, the loss of internal heat can be completely prevented, and the problem of the occurrence of the false operation due to the freezing can be solved.
The invention can ensure the sealing performance of the air channel and completely block the inflow of haze.
Claims (5)
1. A cutter for an exhaust fan is characterized in that,
a cutter (100) for a discharge fan, which is installed on a discharge fan housing (10) provided with a fan (12) that sucks in internal air by rotation of a motor (11) and cuts off external air, at a connection point between the interior and exterior of a building, comprises:
a frame (110) which is extended from an air outlet (13) for discharging air from the fan casing (10) and forms an air passage (111) fixed to an inner wall thereof for discharging internal air;
a cutting ridge (120) formed by a heat insulating material protruding from the inner surface of the frame (110);
a center shaft (130) provided in the center of the frame (110) so as to be movable in a hollow state;
a cutting plate (140) which is formed by a heat insulating material in a shape corresponding to the cutting threshold (120), is fixed to the central shaft (130), contacts the inclined ground of the cutting threshold (120) along with the movement of the central shaft (130), and cuts off the air passage (111);
a shaft holder (150) in which a spring (160) is provided around the center shaft (130) and the center shaft is inserted therethrough;
the frame (110), the cutting threshold (120), the central shaft (130), the cutting plate (140) and the shaft support (150) form a plurality of layers;
the frame (110) is formed of a base frame (110a) at an upper end and an auxiliary frame (110b) at a lower end thereof;
the cutting threshold (120), the central shaft (130), the cutting plate (140) and the shaft support (150) are respectively formed at the upper ends of the cutting threshold (120a), the basic central shaft (130a), the basic cutting plate (140a) and the basic shaft support (150a), and the lower ends of the cutting threshold (120b), the auxiliary central shaft (130b), the auxiliary cutting plate (140b) and the auxiliary shaft support (150b) are formed;
the spring (160) is located outside the base shaft holder (150a) in which the base center shaft (130a) is inserted.
2. The cutter for exhaust fan according to claim 1,
the method comprises the following steps: a base shaft holder (150a) formed to extend vertically inside the lower side of the base frame (110a) and through which the base center shaft (130a) is inserted; a spring support ridge (154) vertically connected to the base shaft bracket (150 a); and a spring guide portion (151) vertically connected to the spring support ridge (154) and formed in parallel with the base shaft holder (150 a);
a fixing frame (152) is arranged on the outer peripheral surface of the spring guide part (151), and a through hole (153) through which air passes is formed by the fixing frame (152).
3. The cutter for exhaust fan according to claim 2,
the fixing frame (152) is formed in a streamline shape (152a) so that the sectional area is widened toward the direction of air discharge;
the lower surface of the auxiliary cutting ridge (120b) of the auxiliary frame (110b) and the inner surface of the auxiliary shaft support (150b) are provided with hot wires.
4. The cutter for exhaust fan according to claim 2,
a curved surface (131) is formed on a base center shaft (130a) of the base frame (110a) so as to protrude integrally with the base center shaft (130a), an upper portion of a spring (160) inserted into the outside is fixed, and when the center shaft (130) moves, the center shaft (130) moves by a predetermined width until the curved surface (131) reaches an upper head portion of the base shaft holder (150 a).
5. The cutter for exhaust fan according to claim 1,
the cutting plate (140) and the cutting threshold (120) are made of the same material.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160039667A KR101643719B1 (en) | 2016-03-31 | 2016-03-31 | Breakers for fans |
| KR10-2016-0039667 | 2016-03-31 | ||
| PCT/KR2017/002239 WO2017171253A2 (en) | 2016-03-31 | 2017-03-02 | Blocking device for ventilator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108885024A CN108885024A (en) | 2018-11-23 |
| CN108885024B true CN108885024B (en) | 2020-11-17 |
Family
ID=56714969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780019893.6A Expired - Fee Related CN108885024B (en) | 2016-03-31 | 2017-03-02 | Cutter for exhaust fan |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20190120240A1 (en) |
| KR (1) | KR101643719B1 (en) |
| CN (1) | CN108885024B (en) |
| WO (1) | WO2017171253A2 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4092907A (en) * | 1974-09-07 | 1978-06-06 | Daimler-Benz Aktiengesellschaft | Outlet nozzle for heating and venting systems of automobiles |
| JPH10267345A (en) * | 1997-03-28 | 1998-10-09 | Kanegafuchi Chem Ind Co Ltd | Heat insulated and airtight type exhausting device |
| KR20060016067A (en) * | 2005-10-11 | 2006-02-21 | 주식회사 한국건설관리공사 | The diffuser for variable air volume system |
| KR200443398Y1 (en) * | 2007-09-28 | 2009-02-13 | 영동금속(주) | Dual check-valve type flowing backward prevention device |
| CN201359347Y (en) * | 2009-02-12 | 2009-12-09 | 王宝法 | Space air conditioner |
| CN202109609U (en) * | 2011-05-23 | 2012-01-11 | 宁波司杰特卫厨电器有限公司 | Air exhaust device with automatic closing function |
| KR20120106268A (en) * | 2011-03-18 | 2012-09-26 | 다연산업 주식회사 | Ventilation for cattle shed |
| JP2012220098A (en) * | 2011-04-08 | 2012-11-12 | Panasonic Corp | Ventilation port |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100954259B1 (en) | 2008-10-01 | 2010-04-27 | 이부규 | Ventilator with built-in type power dampers |
| KR101188851B1 (en) | 2009-08-31 | 2012-10-08 | 주식회사 힘펠 | Damper for preventing counterflow in ventilation fan |
| KR101182542B1 (en) | 2010-11-29 | 2012-09-12 | 박치형 | Ventilator breaker |
-
2016
- 2016-03-31 KR KR1020160039667A patent/KR101643719B1/en active IP Right Grant
-
2017
- 2017-03-02 WO PCT/KR2017/002239 patent/WO2017171253A2/en active Application Filing
- 2017-03-02 US US16/090,281 patent/US20190120240A1/en not_active Abandoned
- 2017-03-02 CN CN201780019893.6A patent/CN108885024B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4092907A (en) * | 1974-09-07 | 1978-06-06 | Daimler-Benz Aktiengesellschaft | Outlet nozzle for heating and venting systems of automobiles |
| JPH10267345A (en) * | 1997-03-28 | 1998-10-09 | Kanegafuchi Chem Ind Co Ltd | Heat insulated and airtight type exhausting device |
| KR20060016067A (en) * | 2005-10-11 | 2006-02-21 | 주식회사 한국건설관리공사 | The diffuser for variable air volume system |
| KR200443398Y1 (en) * | 2007-09-28 | 2009-02-13 | 영동금속(주) | Dual check-valve type flowing backward prevention device |
| CN201359347Y (en) * | 2009-02-12 | 2009-12-09 | 王宝法 | Space air conditioner |
| KR20120106268A (en) * | 2011-03-18 | 2012-09-26 | 다연산업 주식회사 | Ventilation for cattle shed |
| JP2012220098A (en) * | 2011-04-08 | 2012-11-12 | Panasonic Corp | Ventilation port |
| CN202109609U (en) * | 2011-05-23 | 2012-01-11 | 宁波司杰特卫厨电器有限公司 | Air exhaust device with automatic closing function |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101643719B1 (en) | 2016-08-12 |
| WO2017171253A2 (en) | 2017-10-05 |
| CN108885024A (en) | 2018-11-23 |
| US20190120240A1 (en) | 2019-04-25 |
| WO2017171253A3 (en) | 2018-09-07 |
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Granted publication date: 20201117 Termination date: 20210302 |