JP4091630B2 - Ventilation grill - Google Patents

Description

  The present invention relates to a ventilation grill for discharging indoor turbid air to the outside and introducing outdoor fresh air into the room. The present invention relates to a ventilation grill that can exhibit rainproof performance.

  FIG. 1 is a cross-sectional view illustrating a state in which a conventional ventilation grill is fixed to an outer wall. As shown in FIG. 1, in order to exchange indoor air and outdoor air, a conventional ventilation grill 1 fitted into a ventilation duct 3 installed through an outer wall 2 has an upper portion to prevent rainwater from entering. Is formed of a spherical vent cap 4 having a vent 5 and a guide member 6 for guiding the air entering and exiting through the ventilation duct 3 toward the vent 5 at the lower portion.

  The conventional ventilation grill 1 configured as described above has no problem in windproof and rainproof performance when no airflow is generated or an airflow flowing from the upper part to the lower part (hereinafter referred to as “downward airflow”) is generated. Although there was no airflow that flows from the bottom to the top due to the recent appearance of many high-rise buildings (hereinafter referred to as “upward airflow”), the vent cap 4 on the other hand intrudes wind and rainwater into the room. It plays the role of guiding. For this reason, outside wind or rainwater that has entered the room through the ventilation grill 1 enters a ventilation system such as a total heat exchanger connected to the ventilation grill 1, thereby affecting supply air and exhaust flow. Or there was a problem that caused a failure in the ventilation system.

  Further, since the area occupied by the ventilation port 5 in the ventilation port cap 4 is small, the ventilation grille 1 has a resistance that obstructs the flow of air when air is forcibly supplied and exhausted to the ventilation system using a blower fan. As a result, there is a problem that pressure loss occurs.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a ventilation grill that can exhibit excellent windproof and rainproof performance regardless of the direction of airflow.

  In addition, the present invention provides a ventilation grill that can reduce pressure loss by acting as a minimum resistance to air supplied and exhausted to the ventilation system when the ventilation system is forcibly supplied and exhausted. For the purpose.

  In order to achieve the above object, a ventilation grill according to the present invention has a hollow main body communicating with a duct penetrating an outer wall, and air is allowed to enter and exit from the front and side surfaces of the main body. Each of the opening portion and the through hole is provided, and a guide vane that forms a channel inclined from the opening portion toward the through hole is installed in the main body.

  The main body includes a cylindrical frame and a case having a first guide vane forming a part of the guide vane and surrounding the frame, and the first guide is disposed on a front surface of the case. A front grille having a second guide vane extending the flow path formed by the vane is coupled.

  In addition, a plate fixed to an outer wall is provided at one end of the frame, and an airflow passage is formed between the first guide vane and the plate through which an airflow flowing into the main body flows. It is characterized by being.

  The frame is formed with a plurality of first through holes surrounding the air flow passage in a circumferential direction.

  In addition, a second through hole corresponding to the position and size of the first through hole formed in the frame is formed on a side surface of the case.

  In addition, a first insect net is installed between the inner peripheral surface of the case and the outer peripheral surface of the frame to prevent a pest from entering the through hole.

  Further, the main body is formed with a coupling portion that protrudes outside the main body and couples with the duct.

  Further, the coupling portion is formed with an insertion groove for inserting a partition plate that partitions the duct into an air supply duct and an exhaust duct.

  Further, the main body is provided with a partition plate that divides an internal space into a communication space with the air supply duct and a communication space with the exhaust duct.

  Further, the front grill is characterized in that a closed surface for blocking the duct is formed at the center thereof, and an open portion for allowing air to enter and exit is formed around the closed surface.

  In addition, a large number of bosses are formed on the rear side of the front grille, a boss accommodating hole for accommodating the boss is formed on the front surface of the case, and the boss is inserted into the boss accommodating hole. The front grille and the case are coupled to each other by fastening a screw in a screw fastening groove formed in the boss.

  In addition, a second insect net is installed between the case and the front grill to prevent insects from entering.

  Further, the main body is provided with a rainwater intrusion prevention stage that protrudes outside the main body and prevents rainwater from entering the duct.

  The rainwater intrusion prevention stage is provided with a rainwater discharge port for discharging rainwater that has entered the duct.

  The ventilator according to the present invention has an effect of exhibiting excellent windproof and rainproof performance because the airflow flowing into the ventilator can be discharged to the outside of the ventilator regardless of the direction in which the airflow occurs. .

  Further, since the open area of the ventilation grill is large, there is an effect that the pressure loss of the air that is forcibly supplied and exhausted can be reduced when the ventilation system is in operation.

Hereinafter, a ventilation grill according to an embodiment of the present invention will be described in detail with reference to the drawings.
One end of a ventilation system such as a total heat exchanger for exhausting indoor turbid air out of the room and introducing fresh outdoor air into the room is coupled to a duct exposed outside the room. When the air supply capacity and exhaust capacity required by the above ventilation system are large, by installing two ducts, one is an air supply duct in charge of air supply and the other is an exhaust in charge of exhaust Used as a duct. On the other hand, when the air supply capacity and the exhaust capacity required by the ventilation system are small, as shown in FIG. 2, by installing a partition plate 21 in one duct 20, one as the air supply duct 20a and the other One of these is used as the exhaust duct 20b.

  As described above, when the duct 20 used in the ventilation system is exposed to the outside as it is, the air flow of the atmosphere directly flows into the room through the duct 20, thereby affecting the air supply and exhaust flow of the ventilation system. The ventilation grill 10 is installed in the duct 20 as shown in FIG.

  Hereinafter, the ventilation grill by one Embodiment of this invention is demonstrated based on FIG.2 and FIG.3.

  2 is an exploded perspective view of a ventilation grill according to an embodiment of the present invention, and FIG. 3 is a rear perspective view of a frame constituting the ventilation grill of FIG. As shown in the figure, a ventilation grill 10 according to an embodiment of the present invention includes a frame 30 that is coupled to a duct 20 and fixed to an outer wall, a case 50 that is coupled to the frame 30 to form a single body 15, and And a front grill 60 coupled to the front surface of the case 50.

  The frame 30 has a hollow internal space 33, and a disk-shaped plate 31 is provided at one end thereof. In this plate 31, a piece fastening hole 31a into which a large number of pieces for fixing the frame 30 to the outer wall are inserted, a hook insertion hole 31b for inserting and fixing a hook 55 formed in the case 50, Is formed.

  The frame 30 includes a first through hole 34 formed in the circumferential direction of the frame 30 in order to discharge the airflow that has flowed into the ventilation grill 10 to the outside. The first through hole 34 includes a first upper through hole 34 a formed in the upper part of the frame 30 and a first lower through hole 34 b formed in the lower part of the frame 30. The first lower through hole 34b is formed adjacent to the partition plate 39 that divides the internal space 33 in order to discharge rainwater that has entered the internal space 33 to the lower side. The first lower through hole 34b is slightly larger than the first upper through hole 34a because the first lower through hole 34b is formed apart from the partition plate 39 by a predetermined distance in order to give a certain rigidity to 30.

  The frame 30 includes a coupling portion 35 (FIG. 3) that protrudes outward from the frame 30 and is coupled to the duct 20. The outer peripheral surface of the coupling portion 35 and the inner surface of the duct 20 are in close contact and coupled to each other. Air can be prevented from leaking between 20 and the coupling portion 35. The coupling portion 35 is provided with an insertion groove 36 for inserting the partition plate 21 when coupled to the duct 20 having the partition plate 21.

  The frame 30 has a rainwater intrusion prevention stage 37 that protrudes inward and prevents rainwater from entering the inside of the duct 20, and a rainwater discharge port 38 from which a part of the rainwater intrusion prevention stage 37 is cut off. I have.

  The rainwater intrusion prevention stage 37 has a predetermined length and protrudes to the inside of the frame 30, thereby preventing rainwater from directly entering the inside of the duct 20. Further, even when a part of rainwater enters the inside of the duct 20, the rainwater that has entered the inside of the duct 20 is discharged to the lower part through the rainwater discharge port 38 formed in the rainwater intrusion prevention stage 37. The rainwater discharged to the lower portion is discharged to the outside of the ventilation grill 10 through the first lower through hole 34b formed at the lower portion of the frame 30.

  A case 50 is coupled to the front surface of the frame 30, and the case 50 is guided so that airflow flowing in from the front surface exits to the outside of the ventilation grill 10 through a first through hole 34 formed on the side surface. The first guide vane 51 is provided. The first guide vane 51 includes one or more guide vanes 51a inclined concentrically from the front surface 50a to the side surface 50b. Since the guide vanes 51a are separated from each other by a predetermined distance with a cap shape whose diameter increases from the front to the rear, a first flow path 53 through which air flows is formed between the guide vanes 51a. .

  The side surface 50b of the case 50 surrounding the first guide vane 51 has a second upper portion corresponding to the position and size of the first upper through hole 34a and the first lower through hole 34b when the case 50 and the frame 30 are coupled. A second through hole 54 having a through hole 54a and a second lower through hole 54b is formed. As described above, when the case 50 and the frame 30 are combined to form one main body 15, the first through hole 34 of the frame 30 and the second through hole 54 of the case 50 coincide with each other. The airflow that has flowed into the interior comes out of the ventilation grill 10 through the through holes 34 and 54 formed in the side surface of the main body 15.

  Between the inner peripheral surface of the case 50 and the outer peripheral surface of the frame 30, an annular first insect net 40 is installed to prevent pests from entering the room through the through holes 34 and 54.

  The side surface 50b of the case 50 is provided with a hook 55 protruding rearward in order to fix the case 50 to the frame 30, and the hook 55 is provided with a hook insertion hole 31b provided in the plate 31 of the frame 30. Inserted and fixed to. Further, with the hook 55 inserted into the hook insertion hole 31b, the case 15 and the frame 30 are finally coupled with the screw 56 that passes through the side surface 50b of the case 50, whereby the main body 15 is completed. At this time, the first guide vane 51 formed in the case 50 is inserted into the internal space 33 of the frame 30 so that a part of the internal space 33 is filled. When the case 50 and the frame 30 are coupled, an airflow passage 32 is provided between the first guide vane 51 and the plate 31 so that the airflow that flows into the main body 15 flows upward or downward. It is formed. Since the ascending airflow and the descending airflow flowing into the airflow passage 32 escape to the through holes 34 and 54 formed on the side surface of the main body 15, the through holes 34 and 54 correspond to the positions of the airflow passages 32. 32 is formed so as to surround 32.

  A front grill 60 is coupled to the front surface 50 a of the case 50, and a second guide vane 61 extending from the first flow path 53 formed by the first guide vane 51 is formed on the front grill 60. . The front grill 60 is formed with a closed surface 60a for blocking the duct 20 at the center thereof, and an open portion 60b for allowing air to enter and exit around the closed surface 60a. A second flow path 63 is formed in the opening 60 b by the second guide vane 61, and the second flow path 63 is connected to the first flow path 53 formed by the first guide vane 51. Therefore, a single flow path is formed for guiding the airflow flowing in from the open portion 60 b to escape to the outside of the ventilation grill 10 through the through holes 34 and 54 formed on the side surface of the main body 15.

  A large number of bosses 64 projecting rearward are formed on the frame 60 c of the front grill 60, and the case 50 is provided with boss receiving holes 57 for inserting the bosses 64. When the front grill 60 and the case 50 are joined, the boss 64 is inserted into the boss receiving hole 57 and fixed, and then the screw 65 (see FIG. 4) is inserted into the screw fastening groove formed in the boss 64 from the inside of the case 50. By fastening, the front grill 60 can be easily coupled to the case 50.

  When the front grill 60 and the case 50 are joined together, the second insect net 42 is interposed between the case 50 and the front grill 60, so that pests can enter the room via the first and second flow paths 53 and 63. Prevent intrusion.

  The frame 30, the case 50, and the front grill 60 have compartments for partitioning the internal space 33 (FIG. 2) of the main body 15 into a communication space 33a with the air supply duct 20a and a communication space 33b with the exhaust duct 20b. Plates 39, 59 and 69 are installed, respectively. The right space 33a partitioned by the partition plates 39, 59, and 69 in this way communicates with the air supply duct 20a, and the left space 33b communicates with the exhaust duct 20b, so that the right space 33a serves as the air supply space. The space 33b functions as an exhaust space.

When the air supply capacity and exhaust capacity of the ventilation system are large, two ducts without the partition plate 21 are used, but one is in charge of air supply, and the other is in charge of exhaust. Used as an exhaust duct. In this case, by using two ventilation grills 10, one may be coupled to the air supply duct and the other may be coupled to the exhaust duct.
As described above, the ventilation grill 10 is divided by the partition plates 39, 59, and 69, so that the ventilation grill 10 is shared when the supply and exhaust capacity is large and small.

  Next, the operation of the ventilation grill according to the embodiment of the present invention will be described with reference to FIGS.

  4 is a cross-sectional view illustrating the operating principle of the ventilation grill of FIG. 2 when a frontal airflow is generated, and FIG. 5 is a front view illustrating the operating principle of the ventilation grill of FIG. 2 when an upward airflow is generated. . As shown in FIG. 4, when a front airflow is generated in the ventilation grill 10, a part thereof is blocked by a closing surface 60 a formed in the central part of the ventilation grill 10, and a part thereof is a first part formed in the opening part 60 b. The air flows into the ventilation grill 10 through the second flow path 63 connected to the flow path 53 and the first flow path 53. However, the first and second flow paths 53 and 63 are inclined so that the airflow flowing in from the front flows out into the through holes 34 and 54 formed in the side surface of the main body 15. The front airflow that has flowed into the interior does not flow into the duct 20, and comes out of the ventilation grill 10 through the through holes 34 and 54.

  As shown in FIG. 5, when an updraft is generated in the ventilation grill 10, the ventilation grill 10 has a cylindrical shape, so that part of the ventilation grill 10 flows naturally along the outer surface of the ventilation grill 10, and part of the ventilation grill 10. It flows into the inside of the ventilation grille 10 through the lower through holes 34b and 54b formed in the lower part. However, since the upper through holes 34a and 54a corresponding to the lower through holes 34 and 54b are formed in the upper part of the ventilation grill 10, the airflow flowing into the ventilation grill 10 is not flowed into the duct 20. Then, it comes out through the upper through holes 34a and 54a.

  Further, since the rain grille intrusion prevention stage 37 is provided in the ventilation grill 10, even if the inclined airflow including rainwater flows into the ventilation grill 10, it is difficult to enter the duct 20.

  That is, rainwater is discharged to the lower portion through the rainwater discharge port 38 even if it is included in the airflow and slightly enters the inside of the duct 20. The rainwater discharged to the lower portion is discharged to the outside of the ventilation grill 10 through the lower through holes 34b and 54b.

  Moreover, since the opening part 60b and the through-holes 34 and 54 are each formed in the front surface and side surface of the ventilation grille 10 with a wide area, the air forcibly supplied and exhausted when the ventilation system is operated. The pressure loss is also reduced due to the decrease in resistance received.

It is sectional drawing which showed the state by which the conventional ventilation grill was fixed to the outer wall. It is a disassembled perspective view of the ventilation grill by one Embodiment of this invention. It is a rear surface perspective view of the frame which comprises the ventilation grill of FIG. FIG. 3 is a cross-sectional view illustrating the operating principle of the ventilation grill of FIG. 2 when a front airflow is generated. FIG. 3 is a front view showing the operating principle of the ventilation grill of FIG. 2 when an ascending air current is generated.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Ventilation grill 15 Main body 20 Duct 21, 39, 59, 69 Partition plate 30 Frame 31 Plate 32 Airflow passage 33 Internal space 34 First through-hole 37 Rainwater intrusion prevention stage 38 Rainwater discharge port 40 First insect repellent net 42 Second insect repellent net 50 Case 51 First guide vane 53 First flow path 54 Second passage hole 55 Hook 56, 65 Screw 57 Boss receiving hole 60 Front grill 61 Second guide vane 63 Second flow path 64 Boss

Claims (14)

  It has a hollow main body that communicates with a duct that penetrates the outer wall, and an opening and a through-hole for allowing air to enter and exit the main body are provided on the front and side surfaces of the main body, respectively. Is a ventilation grille characterized in that a guide vane that forms a channel inclined from the open part toward the through hole is installed.   The main body includes a cylindrical frame and a case having a first guide vane forming a part of the guide vane and surrounding the frame, and the first guide vane is disposed on a front surface of the case. The ventilation grill according to claim 1, wherein a front grille having a second guide vane extending a flow path to be formed is coupled.   A plate fixed to an outer wall is provided at one end of the frame, and an airflow passage is formed between the first guide vane and the plate through which an airflow flowing into the main body flows. The ventilation grill according to claim 2 characterized by things.   The ventilation grill according to claim 3, wherein a plurality of first through holes are formed in the frame so as to surround the air flow passage in a circumferential direction.   The ventilation grill according to claim 4, wherein a second through hole corresponding to a position and a size of the first through hole formed in the frame is formed on a side surface of the case.   6. The first insect net for preventing insects from entering the through hole is provided between the inner peripheral surface of the case and the outer peripheral surface of the frame. The described ventilation grill.   The ventilation grill according to claim 1, wherein the main body is formed with a coupling portion that protrudes outside the main body and is coupled to the duct.   The ventilation grill according to claim 7, wherein an insertion groove for inserting a partition plate that divides the duct into an air supply duct and an exhaust duct is formed in the coupling portion.   The ventilation grill according to claim 8, wherein the main body is provided with a partition plate that divides an internal space into a communication space with the air supply duct and a communication space with the exhaust duct. .   3. The front grill is formed with a closed surface for blocking the duct at a central portion thereof, and an open portion for allowing air to enter and exit around the closed surface. The described ventilation grill.   A large number of bosses are formed on the rear side of the front grille, a boss accommodating hole for accommodating the boss is formed on the front surface of the case, and the boss is inserted into the boss accommodating hole. The ventilation grill according to claim 10, wherein the front grill and the case are coupled by fastening a screw in a screw fastening groove formed in the boss.   The ventilation grill according to claim 11, wherein a second insect net is installed between the case and the front grill to prevent insects from entering.   The ventilation grill according to claim 1, wherein the main body is provided with a rainwater intrusion prevention stage that protrudes outside the main body and prevents rainwater from entering the duct.   14. The ventilation grill according to claim 13, wherein the rainwater intrusion prevention stage is provided with a rainwater discharge port for discharging rainwater that has entered the duct.

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