Non-powered vent

Abstract

A non-powered ventilator that prevents backdraft by forming a vortex forming area by internal and external airflows so as to smoothly exhaust indoor airflow to outside is proposed. The non-powered ventilator includes: a fixing member provided with a fixing flange part; a finishing cap part provided with a finishing cone part, an opening part, and a finishing flange part forming fastening holes; a discharging cap part respectively provided with a discharging cone part, a bent edge part, a discharging flange part, and fastening holes; a backdraft prevention member provided with a hemispherical curved plate body, at least three support legs, and opening parts, and a first bent part as well as a circular groove; and fastening members fastened and assembled by bolts and nuts through the fastening holes of the discharging cap part, the backdraft prevention member, and the fixing member.

Claims

1. A non-powered ventilator comprising: a fixing member provided with a vertical cylinder having opened front and rear ends thereof and provided with a fixing flange part horizontally extended at a right angle from an upper end of the vertical cylinder; a finishing cap part provided with a passage formed by a central part thereof, provided with a finishing cone part formed of a circular inclined side with a narrow upper end and a wide lower end to surround the passage, provided with an opening part at the narrow upper end of the finishing cone part, provided with a finishing flange part horizontally extended at a right angle from the wide lower end of the finishing cone part, and provided with fastening holes in the finishing flange part; a discharging cap part provided with a passage formed by a central part thereof, provided with a discharging cone part formed of a circular inclined side with a narrow upper end and a wide lower end to surround the passage, provided with an opening part at the narrow upper end of the discharging cone part, provided with a discharging flange part horizontally extended at a right angle to the wide lower end of the discharging cone part, and provided with fastening holes in the discharging flange part, so that the fixing flange part of the fixing member and the discharging flange part are assembled and installed correspondingly; a backdraft prevention member provided with a hemispherical curved plate body having a middle part thereof protruding in a circular shape, provided with at least three support legs extending from a peripheral part of the curved plate body, the support legs being fastened by forming fastening holes corresponding to the fastening holes of the stacked finishing cap part and discharging cap part, provided with opening parts through which airflow is introduced at positions between the support legs, and simultaneously provided with a first bent edge part and a circular groove along the circular peripheral part of the curved plate body, thereby being installed between the stacked finishing cap part and the discharging cap part; and fastening members fastened and assembled by bolts and nuts through the fastening holes of the discharging cap part, the backdraft prevention member, and the fixing member, so as to form a gap a between the backdraft prevention member and the discharging cap part.

2. The non-powered ventilator of claim 1, wherein the backdraft prevention member is provided with the circular groove and the first bent edge part along the peripheral part of the curved plate body, and the discharging cap part is provided with a second bent edge part, so that a part of inflow airflow forms vortices in a peripheral part of an upper end passage, whereby a blocking area b is formed to block airflow movement by collision of the airflows at an outside airflow inlet side between the finishing flange part of the finishing cap part and the discharging flange part of the discharging cap part.

3. The non-powered ventilator of claim 1, wherein, in forming the gap a between a lower side of the first bent edge part of the backdraft prevention member and the second bent edge part of the discharging cap part, the gap a between a lower part of the backdraft prevention member and the upper side passage of the discharging cap part is adjustable.

Description

DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a perspective view showing a vertical state of a non-powered ventilator of the present invention.

(2) FIG. 2 is a cross-sectional view showing the vertical state of the non-powered ventilator of the present invention.

(3) FIG. 3a is an exploded perspective view showing the vertical state of a first exemplary embodiment of the non-powered ventilator of the present invention.

(4) FIG. 3b is an exploded perspective view showing a vertical state of a second exemplary embodiment of the non-powered ventilator of the present invention.

(5) FIG. 4a is a perspective view showing a discharging cap part of the non-powered ventilator of the present invention.

(6) FIG. 4b is a cross-sectional view showing the discharging cap part of the non-powered ventilator of the present invention.

(7) FIG. 5a is a perspective view showing a backdraft prevention member of the non-powered ventilator of the present invention.

(8) FIG. 5b is a cross-sectional view showing the backdraft prevention member of the non-powered ventilator of the present invention.

(9) FIG. 6a is a perspective view showing a finishing cap part of the non-powered ventilator of the present invention.

(10) FIG. 6b is a cross-sectional view showing the finishing cap part of the non-powered ventilator of the present invention.

(11) FIG. 7 is a cross-sectional view showing an installation state for describing movement of indoor and outdoor airflow of the non-powered ventilator of the present invention.

(12) FIG. 8 is a cross-sectional view showing an installation state for describing an action of the backdraft prevention member of the non-powered ventilator of the present invention.

MODE FOR INVENTION

(13) Hereinafter, a preferred exemplary embodiment of the non-powered ventilator of the present invention will be described in detail with reference to the accompanying drawings.

(14) Among the terms introduced in the present invention, terms such as a finishing cap part, a discharging cap part, a finishing cone part, and a discharging cone part are defined in the contents of the pre-registered Korean Patent No. 10-1604819, and therefore, the terms will be used as they were used in the cited document.

(15) Among the accompanying drawings, FIG. 1 is a perspective view showing a vertical state of a non-powered ventilator of the present invention, FIG. 2 is a cross-sectional view showing the vertical state of the non-powered ventilator of the present invention, and FIG. 3a is an exploded perspective view showing a vertical state of a first exemplary embodiment of the non-powered ventilator of the present invention.

(16) The non-powered ventilator of the present invention in accordance with the terms defined above and illustrated by the accompanying drawings includes: a finishing cap part 10, a discharging cap part 30, a backdraft prevention member 20, a fixing member 40, and a fastening member 50.

(17) The finishing cap part 10 has a cap-shaped (i.e., a cap, a lid, or a ventilation lid installed outside an exhaust duct) outer cover structure, including: a passage 17 formed by a central part thereof having an opened shape; a finishing cone part 15 having a circular inclined side with a narrow upper end and a wide lower end to surround the passage 17; a finishing flange part 11 horizontally extended at a right angle at a position below the finishing cone part 15; and a fastening hole 13 formed in the finishing flange part 11.

(18) The backdraft prevention member 20 includes: a curved plate body 21 having a middle part thereof protruding in a circular shape; support legs 22 extended in at least two directions (actually three directions) at the peripheral part of the curved plate body 21; fastening holes 23 provided by the support legs 22, the fastening holes 23 corresponding to fastening holes 33 of the stacked discharging cap parts 30; and opening parts 24 circulating and guiding airflow therethrough and provided at positions between the support legs 22, thereby being installed between the stacked finishing cap part 10 and the discharging cap part 30.

(19) The discharging cap part 30 includes: a passage 37 formed by a central part thereof having an opened shape; a discharging cone part 35 formed of a circular inclined side with a narrow upper end and a wide lower end to surround the passage 37; a discharging flange part 31 horizontally extended at a right angle at the lower side of the discharging cone part 35; and a fastening hole 33 in the discharging flange part 31 as well, whereby the fixing flange part 21 of the fixing member 40 and the discharging flange part 31 are assembled and installed correspondingly.

(20) The fixing member 40 includes: a vertical cylinder 41 having opened front and rear ends thereof; a fixing flange part 42 horizontally extended at a right angle at one end of the vertical cylinder 41; and fastening holes 43, thereby being installed in an exhaust duct of a building.

(21) As shown in FIGS. 1, 2, and 3a, the fastening member 50 assembles the finishing cap part 10, the backdraft prevention member 20, the discharging cap part 30, and the fixing member 40 by fastening with bolts 51 and nuts 52, so as to fasten the parts and members through the fastening holes 13, 23, 33, and 43 of the finishing cap part 10, the backdraft prevention member 20, the discharging cap part 30, and the fixing member 40, respectively.

(22) Among the accompanying drawings, FIG. 4a is a perspective view of the discharging cap part of the non-powered ventilator of the present invention, and FIG. 4b is a cross-sectional view of the discharging cap part of the non-powered ventilator of the present invention.

(23) As shown in FIGS. 4a and 4b above, the finishing cap part 10 has a cap-shaped (i.e., a cap, a lid, or a ventilation lid installed outside an exhaust duct) outer cover structure, including: a passage 17 formed by a central part thereof; a finishing cone part 15 having a circular inclined side with a narrow upper end and a wide lower end to surround the passage 17; an opening part 17 provided at the upper end of the finishing cone part 15; a finishing flange part 11 horizontally extended at a right angle at a position below the finishing cone part 15; and a fastening hole 13 formed in the finishing flange part 11.

(24) Among the accompanying drawings, FIG. 5a is a perspective view showing a backdraft prevention member of the non-powered ventilator of the present invention, and FIG. 5b is a cross-sectional view showing the backdraft prevention member of the non-powered ventilator of the present invention.

(25) As shown in FIGS. 5a and 5b above, the backdraft prevention member 20 includes: a hemispherical curved plate body 21 having a middle part thereof protruding in a circular shape; support legs 22 extended in at least three directions at the peripheral part of the curved plate body 21; fastening holes 23 provided by the support legs 22, the fastening holes 23 corresponding to fastening holes 33 of the stacked discharging cap parts 30; and opening parts 24 circulating and guiding airflow therethrough and provided at positions between the support legs 22, thereby being installed between the stacked finishing cap part 10 and the discharging cap part 30. The backdraft prevention member 20 forms a first bent edge part 26 and a circular groove 25 in the peripheral part 22 of the curved plate body 21 to prevent an inflow of rainwater, and may form a vortex forming area b on an airflow inlet side between each finishing flange part 11 and discharging flange part 31 of the stacked finishing cap part 10 and discharging cap part 30.

(26) A gap a is formed between the lower side of the circular groove 25 of the backdraft prevention member 20 and a second bent edge part 36 of the discharging cap part 30, so that the backdraft prevention member 20 may allow the gap to be movable depending on discharge air pressure of the indoor airflow and the outside airflow. The backdraft prevention member 20 movable depending on the discharge air pressure of the indoor airflow may affect the discharge of the indoor airflow in proportion to the intensity of the outside airflow.

(27) The non-powered ventilator of the present invention implemented as described above may have a multi-layer assembly structure composed of the same finishing cap parts 10 of FIG. 3a. In this exemplary embodiment of the non-powered ventilator of the present invention, even when being stacked with finishing cap parts having an opened central part, the inflow of rainwater is to be blocked by the backdraft prevention member 20, so that the finishing cap part 10 and the discharging cap part 30 are stacked in the same shape, thereby saving manufacturing cost and increasing productivity. The present invention provides a non-powered ventilator in which a smooth discharge of indoor airflow is achieved and an inflow of rainwater may be blocked, even though the uppermost layer (when installed vertically) does not have a cap-shaped finishing structure that blocks rainwater from entering.

(28) A non-powered ventilator according to a second exemplary embodiment of the present invention will be described.

(29) Among the accompanying drawings, FIG. 3b is an exploded perspective view showing a vertical state of a second exemplary embodiment of the non-powered ventilator of the present invention, FIG. 6a is a perspective view showing a finishing cap part of the non-powered ventilator of the present invention, and FIG. 6b is a cross-sectional view of the finishing cap part of the non-powered ventilator of the present invention.

(30) The finishing cap part 10, the backdraft prevention member 20, the fixing member 40, and the fastening member 50 described above follow the description of the above configuration.

(31) That is, the finishing cap part 10 has a cap-shaped (i.e., a cap, a lid, or a ventilation lid installed outside an exhaust duct) outer cover structure, including: a passage 17 formed by a central part thereof having an opened shape; a finishing cone part 15 having a circular inclined side with a narrow upper end and a wide lower end to surround the passage 17; a finishing flange part 11 horizontally extended at a right angle at a position below the finishing cone part 15; and a fastening hole 13 formed in the finishing flange part 11.

(32) The backdraft prevention member 20 includes: a hemispherical curved plate body 21 having a middle part thereof protruding in a circular shape; support legs 22 extended in at least two directions (actually three directions) at the peripheral part of the curved plate body 21; fastening holes 23 provided by the support legs 22, the fastening holes 23 corresponding to fastening holes 33 of the stacked discharging cap parts 30; and opening parts 24 circulating and guiding airflow therethrough and provided at positions between the support legs 22, thereby being installed between the stacked finishing cap part 10 and the discharging cap part 30.

(33) The fixing member 40 includes: a vertical cylinder 41 having opened front and rear ends thereof; a fixing flange part 42 horizontally extended at a right angle at one end of the vertical cylinder 41; and fastening holes 43, thereby being installed in an exhaust duct of a building.

(34) As shown in the drawings, the fastening member 50 assembles the finishing cap part 10, the backdraft prevention member 20, the discharging cap part 30, and the fixing member 40 by fastening with bolts 51 and nuts 52, so as to fasten the parts and members through the fastening holes 13, 23, 33, and 43 of the finishing cap part 10, the backdraft prevention member 20, the discharging cap part 30, and the fixing member 40, respectively.

(35) The non-powered ventilator of the present invention according to the drawings may have the multi-layer assembly structure of the finishing cap part 10 and the discharging cap part 30, but the discharging cap part 30 has a difference from the finishing cap part 10. As shown in FIGS. 6a and 6b above, the discharging cap part 30 includes: a passage 37 formed by the central part thereof; a discharging cone part 35 formed of a circular inclined side with a narrow upper end and a wide lower end to surround the passage 37; a second bent edge part 36 provided at an upper end of the discharging cone part 35; a discharging flange part 31 horizontally extended at a right angle at the lower side of the discharging cone part 35; and a fastening hole 33 in the discharging flange part 31 as well, whereby the fixing flange part 21 and the discharging flange part 31 of the fixing member 40 are assembled and installed correspondingly. The non-powered ventilator implemented as described above may have a multi-layer assembly structure of the finishing cap part 10 and the discharging cap part 30 as shown in FIG. 3b, and may be implemented by using the discharging cap part 30 having a modified structure of the finishing cap part 10.

(36) Among the accompanying drawings, FIG. 7 is a cross-sectional view showing an installation state describing indoor and outdoor airflow movement of the non-powered ventilator of the present invention.

(37) As shown in FIG. 7, the gap a is formed between the lower side of the circular groove 25 of the backdraft prevention member 20 and the second bent edge part 36 of the discharging cap part 30, and the backdraft prevention member 20 may form the first bent edge part 26 and the circular groove 25 in the peripheral part 22 of the curved plate body 21 to prevent the inflow of rainwater.

(38) In particular, it is preferable that the second bent edge part 36 is provided with a curved surface thereof having a size sufficient to change the direction of the inflow airflow.

(39) In the process of discharge toward the outer inflow gas of the vortex forming area b,

(40) although there exist differences depending on air pressure of an indoor airflow primarily discharged from the inside, an airflow secondarily flowing into the gap a from the upper part (in horizontal installation), and an airflow tertiarily flowing into the curved plate body 21, a movement of the indoor airflow according to Bernoulli's principle in common is discharged to the lower side of the ventilator in the horizontal installation state, but in particular, the vortex forming area (i.e., the circular arrows) by the second bent edge part 36 may be formed, so that the discharge airflow may be further accelerated without interfering with the airflow. A gas blocking wall has an exhaust effect that may be increased depending on the extent to which a gap a in the horizontal installation state forming the gap a may be reduced.

(41) Preferably, the forming of the gas blocking wall is to be implemented without the gap a, but in the case where the gap a of the lower part is sufficiently widened in the horizontal installation state, the downward flow of the indoor airflow, which is ideally preferable, may be induced. That is, the vortex forming area b may be formed on the inlet side between each finishing flange part 11 and the discharging flange part 31 of the stacked finishing cap part 10 and discharging cap part 30, and the inflow of airflow that interferes with the discharge of indoor airflow at the upper part is to be blocked, so that the indoor air such as exhaust gas discharged along the central part passage of the installed ventilator is discharged downward (in the horizontal installation state), whereby the indoor airflow may be accelerated, suctioned, and discharged by the airflow that has passed through the curved plate body 21.

(42) The normal discharge of the airflow is proportional to the flow rate of the downward airflow toward the curved plate body 21, so that the indoor airflow is exhausted, but additionally, appropriate suppression of the inflow of airflow through the gap a may allow the discharge of the airflow to be accelerated.

(43) Therefore, in the horizontal installation state (in FIG. 7), since the airflow flowing from the outside in the vertical direction has an airflow movement toward the gap a, having an extent that is slightly insignificant, most of the gas discharged from a room will move downward along the inner side surface of the curved plate body 21 of the backdraft prevention member 20. The flow of the downward movement is mostly moved by the negative pressure generated as the airflow flowing from the outside of the curved plate body 21 moves downward. The gap a may be fully calculated according to wind power of an installation site and an installation position thereof when designing the ventilator. However, as will be described later, the gap a shown in FIG. 8 may be designed to be movable in proportion to the natural air pressure of the outside airflow or the indoor airflow.

(44) Among the accompanying drawings, FIG. 8 is a cross-sectional view showing an installation state for describing an action of the backdraft prevention member of the non-powered ventilator of the present invention.

(45) Describing the operation of the non-powered ventilator of the present invention as shown in FIG. 8 is as follows.

(46) As shown in the drawings and FIG. 7, the gap a is formed between the lower side of the circular groove 25 of the backdraft prevention member 20 and the second bent edge part of the discharging cap part 30, and the backdraft prevention member 20 may allow the gap a to be movable depending on the discharge pressure of the indoor airflow and the outside airflow. The backdraft prevention member 20 movable depending on the discharge air pressure of the indoor airflow may affect the discharge of the indoor airflow in proportion to the intensity of the outside airflow.

(47) The circular groove 25 described above in the vertical installation state may prevent rainwater from entering a room. In addition, values of the width of the support leg 22 of the backdraft prevention member 20 and the opening space 24 between the support legs 22, the opening space becoming an airflow path after installation, are also adjusted depending on an installation site and an installation position thereof, and will be reflected in the design.

(48) The present invention has been described with reference to the exemplary embodiments shown in the drawings, but these are exemplary, and those skilled in the art will appreciate that various modifications and other equivalent embodiments are possible. The technical protective scope of the present invention will be defined by the claims.

DESCRIPTION OF THE MAIN NUMERALS IN THE DRAWINGS

(49) 10: finishing cap part 11: finishing flange part 13: fastening hole 15: finishing cone part 17: passage 20: backdraft prevention member 21: curved plate body 22: support leg 23: fastening hole 24: opening part 25: circular groove 26: first bent edge part 30: discharging cap part 31: discharging flange part 33: fastening hole 34: discharge bent part 35: discharging cone part 36: second bent edge part 37: passage 40: fixing member 41: vertical cylinder 42: fixing flange part 50: fastening member 51: fastening bolt 52: fastening nut