CN1880871B - Ventilation grille - Google Patents

Abstract

The present invention provides a ventilation grill capable of exhibiting good windproof and rainproof performance even if airflow is generated in any direction. Moreover, it further provides a ventilation grille that minimizes the air resistance of supplying and exhausting air to the ventilation system as much as possible to reduce pressure loss when the ventilation system is forced to supply and exhaust air. The solution is to configure the ventilation grille as follows: a hollow body (15) connected with a pipe (20) penetrating the outer wall, and the front and side of the body (15) are respectively provided with air inlets and outlets for letting air in and out of the body. (15) Internal openings (60b) and through holes (34), (54), the inside of the main body (15) is provided for forming from the opening (60b) to the through holes (34), Guide vanes (51), (61) of (54) direction inclined passages (53), (63).

Description

Ventilation grille

technical field

The present invention relates to a ventilating grille which exhausts the stale air in the room to the outside and introduces the fresh air from the outside into the room, especially relates to a grille which can exert good windproof and rainproof performance even if the airflow is generated in any direction. Ventilation grille.

Background technique

Fig. 1 is a cross-sectional view of a state in which a conventional ventilation grill is fixed to an outer wall. As shown in Fig. 1, in order to exchange air between indoor air and outdoor air, the existing ventilation grille 1 embedded in the ventilation duct 3 provided through the outer wall 2 includes: the upper part is closed, the lower part has The spherical ventilation mask 4 of the ventilation opening 5 is used to prevent the intrusion of rainwater;

As mentioned above, when the existing ventilation grille 1 does not produce airflow or produces an airflow from top to bottom (hereinafter referred to as "downdraft"), there is no problem with its windproof and rainproof performance. When high-rise buildings come on stage one after another, when generating the airflow from bottom to top (hereinafter referred to as "updraft"), the ventilation mask 4 plays the role of guiding wind or rainwater to invade the room. Therefore, the wind or rain that intrudes into the room through the ventilation grill 1 will invade the ventilation system such as the electric heat exchanger connected to the ventilation grill 1, thus affecting the flow of air supply and exhaust or causing ventilation problems. Gas system failure.

In addition, since the area occupied by the ventilation port 5 in the ventilation mask 4 is small, when the exhaust fan is used to forcibly supply and exhaust air to the ventilation system, the ventilation grille 1 blocks and hinders the flow of air, thus causing a loss of pressure. question.

Contents of the invention

The present invention is proposed to solve the above-mentioned problems, and its purpose is to provide a ventilation grill that can exert good windproof and rainproof performance even if the airflow occurs in any direction.

Furthermore, the object of the present invention is to further provide a ventilation system that minimizes the air resistance of supplying and exhausting air in the ventilation system as much as possible when the ventilation system is forced to supply and discharge air, thereby reducing the pressure loss. grille.

In order to achieve the above object, the ventilation grille provided by the present invention has a hollow body connected with a pipe penetrating the outer wall, and the front and side of the body are respectively provided with openings and vents for letting air in and out of the body. A hole is provided inside the main body to form a guide vane for forming an inclined passage from the opening to the through hole.

And, the main body includes a cylindrical frame, a sleeve having a first guide vane forming a part of the guide vane and for surrounding the frame; the front of the sleeve incorporates a front grille having a second guide vane , used to extend the channel formed by the first guide vane.

In addition, one end of the frame is provided with a flat plate fixed to the outer wall, and an air flow channel is formed between the first guide vane and the flat plate for the air flow flowing into the main body.

Moreover, the frame is provided with a plurality of first through holes surrounding the air flow channel in a circumferential direction.

Moreover, a second through hole corresponding to the position and size of the first through hole of the frame is formed on the side of the sleeve.

Moreover, a first insect-proof net is provided between the inner peripheral surface of the sleeve frame and the outer peripheral surface of the frame to prevent pests from invading the through holes.

In addition, the main body is formed with a joint portion protruding to the outside of the main body and used for jointing the pipe.

And, the coupling part forms an insertion groove for inserting a partition plate that divides the duct into an air supply duct and an exhaust duct.

Also, the main body is provided with a partition that divides the internal space into a communication space that communicates with the air supply pipe and a communication space that communicates with the exhaust pipe.

In addition, the central portion of the front grille forms a sealing surface for shielding the duct, and an opening for air to enter and exit is formed around the sealing surface.

And, a plurality of protrusions are formed on the rear side of the front grille, and protrusion receiving holes for accommodating the protrusions are formed on the front of the sleeve frame, and when the protrusions are inserted into the protrusion receiving holes, In this state, the screw is connected to the screw connection groove formed in the protrusion, thereby combining the front grille with the sleeve.

Moreover, a second insect-proof net for preventing pests from invading is arranged between the sleeve frame and the front grille.

In addition, the main body is provided with a rainwater intrusion prevention platform protruding to the outside of the main body to prevent rainwater from intruding into the inside of the pipe.

In addition, the rainwater intrusion prevention platform is provided with a rainwater discharge port for discharging rainwater intruded into the pipe.

Description of drawings

Fig. 1 is the sectional view of the state that the existing ventilation grille is fixed on the outer wall;

Fig. 2 is an exploded schematic diagram of a ventilation grill provided according to an embodiment of the present invention;

Fig. 3 is a schematic view of the back of the ventilation grille frame of Fig. 2;

Fig. 4 is a sectional view showing the working principle of the ventilation grille of Fig. 2 when a frontal airflow is generated;

Fig. 5 is a front view showing the working principle of the ventilation grill of Fig. 2 when an updraft is generated.

Explanation of main symbols: 10 is a ventilation grille, 15 is a main body, 20 is a pipe, 21, 39, 59, 69 are partitions, 30 is a frame, 31 is a flat plate, 32 is an air flow channel, 33 is an internal space, 34 is a The first through hole, 37 is a rainwater intrusion prevention platform, 38 is a rainwater outlet, 40 is a first insect-proof net, 42 is a second insect-proof net, 50 is a sleeve frame, 51 is a first guide vane, 53 is a first channel, 54 is a second through hole, 55 is a buckle, 56 and 65 are screw rods, 57 is a protrusion receiving hole, 60 is a front grille, 61 is a second guide vane, 63 is a second channel, and 64 is a protrusion.

Detailed ways

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 the ventilation system, such as an electric heat exchanger for exhausting stale indoor air to the outdoors and introducing fresh outdoor air to the indoors, is connected to the duct exposed to the outdoors. When the air supply capacity and exhaust capacity required in the ventilation system are large, two pipes are set and one pipe is used as the air supply pipe for air supply, and the other pipe is used as the exhaust pipe for exhaust. Pipelines are used separately. On the contrary, when the air supply capacity and exhaust capacity required in the ventilation system are small, as shown in FIG. Used separately for the exhaust duct 20b.

As mentioned above, when the pipeline 20 used for the ventilation system is directly exposed outside, the atmospheric air flow can directly flow into the room through the pipeline 20, which will affect the air supply and exhaust flow of the ventilation system or the intrusion of rainwater. And cause the failure of the ventilation system, so as shown in FIG. 2 , the ventilation grille 10 is arranged on the pipeline 20 .

The ventilation grill provided by an embodiment of the present invention will be described below with reference to FIG. 2 and FIG. 3 .

FIG. 2 is an exploded schematic diagram of a ventilation grill provided according to an embodiment of the present invention, and FIG. 3 is a schematic diagram of a back side of the framework of the ventilation grill in FIG. 2 . As shown in the figure, the ventilation grill 10 provided according to an embodiment of the present invention includes a frame 30 combined with the pipe 20 and fixed to the outer wall, a sleeve 50 combined with the frame 30 to form a main body 15, and a frame 50 combined with the frame 30 to form a main body 15. Front grille 60 in front of sleeve frame 50 .

The frame 30 has a hollow inner space 33 and a disc-shaped flat plate 31 is provided at one end thereof. The plate 31 is provided with a component connecting hole 31a for inserting a plurality of components fixing the frame 30 to the outer wall and a buckle insertion hole 31b for inserting and fixing the buckle 55 formed on the sleeve.

The frame 30 includes first through holes 34 formed in the circumferential direction of the frame 30 in order to discharge the airflow flowing into the ventilation grill 10 to the outside. The first through hole 34 is composed of a first upper through hole 34 a formed in an upper portion of the frame 30 and a first lower through hole 34 b formed in a lower portion of the frame 30 . The first lower through hole 34b is formed adjacent to the partition plate 39 that divides the inner space 33 to drain the rainwater intruding into the inner space 33 to the lower part, whereas the first upper through hole 34a is used to make the frame 30 rigid. It is formed at a predetermined distance from the partition plate 39 so that the first lower through hole 34b is slightly larger than the first upper through hole 34a.

The frame 30 has a joint part 35 that protrudes outward and is combined with the pipe 20. The outer peripheral surface of the joint part 35 is closely bonded to the inner surface of the pipe 20, thereby preventing air leakage between the pipe 20 and the joint part 35. . Moreover, the connecting portion 35 is provided with an insertion slot 36 for inserting the partition 21 when combined with the pipe 20 having the partition 21 .

The frame 30 has a rainwater intrusion prevention stand 37 protruding inward to prevent rainwater from entering the pipe 20 , and a rainwater discharge port 38 formed by cutting off a part of the rainwater prevention section 37 .

The rainwater intrusion prevention stand 37 has a predetermined length and protrudes toward the inside of the frame 30 so as to prevent rainwater from directly intruding into the pipe 20 . Moreover, even if some rainwater enters the inside of the pipe 20, the rainwater that has entered into the pipe 20 can be discharged to the lower part through the rainwater discharge port 38 formed on the rainwater intrusion prevention stand 37. And, the rainwater discharged to the lower portion is discharged to the outside of the ventilation grill 10 through the first lower through hole 34 b formed in the lower portion of the frame 30 .

The front of the frame 30 is combined with a sleeve 50, and the sleeve 50 has a first guide vane 51 for guiding the airflow flowing in from the front so that it is discharged to the side of the ventilation grill 10 through the first through hole 34 formed on the side. external. The first guide vane 51 has at least one guide vane 51a inclined concentrically from the front surface 50a to the side surface 50b. Since the guide vanes 51a have a conical shape whose diameter increases from the front to the rear and are spaced at predetermined intervals, a first passage 53 for flowing air is formed between the guide vanes 51a.

The side surface 50b of the sleeve frame 50 surrounding the first guide vane 51 forms a second through hole 54, and the second through hole 54 has a corresponding first upper through hole 34a and a first lower portion when the sleeve frame 50 is combined with the frame 30. The position and size of the through hole 34b are the second upper through hole 54a and the second lower through hole 54b. At this time, when the sleeve bracket 50 and the frame 30 are combined to form a main body 15, the first through hole 34 of the frame 30 is consistent with the second through hole 54 of the sleeve bracket 50, so as to flow into the ventilation grill 10. The airflow is exhausted to the outside of the ventilation grill 10 through the through holes 34 , 54 formed on the side of the main body 15 .

Between the inner peripheral surface of the sleeve frame 50 and the outer peripheral surface of the frame 30 is provided a ring-shaped first insect-proof net 40 for preventing pests from invading the room through the through holes 34 , 54 .

The side surface 50b of the sleeve frame 50 is provided with a buckle 55 protruding to the rear side in order to fix the sleeve bracket 50 to the frame 30, and the buckle 55 is inserted and fixed into the buckle insertion hole 31b provided on the flat plate 31 of the frame 30. middle. And, in the state where the buckle 55 is inserted into the buckle insertion hole 31b, the sleeve frame 50 is finally combined with the frame 30 by the screw rod 56 passing through the side surface 50b of the sleeve frame 50 to complete the main body 15 . At this time, a part of the internal space 33 can be filled by inserting the first guide vane 51 formed in the sleeve 50 into the internal space 33 of the frame 30 . When the sleeve frame 50 is combined with the frame 30 , an airflow channel 32 is formed between the first guide vane 51 and the plate 31 , configured to allow the airflow flowing into the main body 15 to flow upward or downward. In order to discharge the updraft and downdraft flowing into the airflow channel 32 through the through holes 34 , 54 formed on the side of the main body 15 , the through holes 34 , 54 are formed corresponding to the position of the airflow channel 32 and surrounding the airflow channel 32 .

The front face 50a of the sleeve frame 50 incorporates a front grille 60 on which a second guide vane 61 for extending the first channel 53 formed by the first guide vane 51 is formed. The central portion of the front grille 60 forms a sealing surface 60 a for shielding the duct 20 , and the periphery of the sealing surface 60 a forms an opening 60 b for letting air in and out. The opening portion 60 b forms a second passage 63 connected to the first passage 53 formed by the first guide vane 51 by the second guide vane 61 . This forms a passage for guiding the airflow flowing in from the opening 60 b to pass through the through holes 34 , 54 formed on the side of the main body 15 to be discharged to the outside of the ventilation grill 10 .

The edge 60c of the front grille 60 is provided with a plurality of protrusions 64 protruding backward, and the sleeve frame 50 is provided with protrusion receiving holes 57 for inserting the protrusions 64 . When the front grille 60 and the sleeve frame 50 are combined, after the protrusion 64 is inserted and fixed into the protrusion receiving hole 57, the screw 65 is connected to the screw connecting groove 57 formed on the protrusion 64 from the inside of the sleeve bracket 50, It is thus easy to couple the front grille 60 to the sleeve frame 50 .

When the front grille 60 is combined with the cover frame 50 , the second insect-proof net 42 is placed between the cover frame 50 and the front grille 60 to prevent pests from entering the room through the first and second passages 53 , 63 .

The frame 30, the sleeve frame 50 and the front grille 60 are respectively provided with partitions 39, 59, 69, which are used to divide the internal space of the main body 15 into a communication space 33a connected with the air supply pipe 20a, and a communication space connected with the exhaust pipe 20b. Connected communication space 33b. In this way, the right space 33a divided by the partitions 39, 59, 69 communicates with the air supply duct 20a, while the left space 33b communicates with the exhaust duct 20b, so that the right space 33a is used for the air supply space, while the left The side space 33b is used for an exhaust space.

When the air supply capacity and exhaust capacity of the ventilation system are large, use two pipes without a partition 21, and use one as the air supply pipe for air supply, and the other as the exhaust pipe for exhaust . In this case, two ventilation grilles 10 may be used, and one of them may be connected to the air supply duct and the other may be combined to the exhaust duct.

As described above, since the interior of the ventilation grill 10 is divided by the partitions 39, 59, 69, the ventilation grill 10 can be shared when the air supply and exhaust capacities are large or small.

Next, the operation of the ventilation grill provided by one embodiment of the present invention will be described with reference to FIGS. 4 and 5 .

4 is a cross-sectional view showing the operating principle of the ventilation grill of FIG. 2 when a frontal airflow is generated, and FIG. 5 is a front view showing the operating principle of the ventilation grill of FIG. 2 when an upward airflow is generated. As shown in FIG. 4 , when a frontal airflow is generated on the ventilation grille 10, a part is blocked by the sealing surface 60a formed in the central part of the ventilation grille 10, while the other part passes through the first channel 53 formed in the opening part 60b and is connected with the airflow. The second channel 63 connected to the first channel 53 flows into the interior of the ventilation grill 10 . However, since the first and second passages 53, 63 are formed obliquely so that the airflow flowing in from the front flows out through the through holes 34, 54 formed on the side of the main body 15, the frontal airflow flowing into the ventilation grille 10 will not flow out. It will flow into the duct 20 but be discharged to the outside of the ventilation grille 10 through the through-holes 34 , 54 .

As shown in Figure 5, when an upward airflow is generated on the ventilation grille 10, since the ventilation grille 10 has a cylindrical shape, part of it flows out automatically along the outside of the ventilation grille 10, while a part passes through the airflow formed in the ventilation grille 10. The lower through-holes 34 b and 54 b in the lower portion of the grill 10 flow into the inside of the ventilation grill 10 . But, because the upper part of ventilation grille 10 is provided with upper through hole 34a, 54a corresponding to lower through hole 34, 54b, thereby the airflow that flows into ventilation grille 10 inside can not flow in the duct 20, but It is discharged through the upper through holes 34a, 54a.

In addition, since the rainwater intrusion prevention stand 37 is provided in the ventilation grill 10 , even if the oblique air flow containing rainwater flows into the ventilation grill 10 , it is difficult to intrude into the duct 20 .

That is, even if rainwater is included in the air flow and can invade the inside of the duct 20 to some extent, it will be discharged to the lower part through the rainwater discharge port 38 . And, the rainwater discharged to the lower part is discharged to the outside of the ventilation grill 10 through the lower through holes 34b, 54b.

In addition, since the open portion 60b and the through holes 34, 54 with a large area are respectively formed on the front and side surfaces of the ventilation grille 10, the resistance to the forced air supply and exhaust air is reduced when the ventilation system is operated. , and thereby reduce pressure loss.

Claims (14)

1. A ventilation grille, which is characterized in that it has a hollow main body connected to a pipeline passing through the outer wall, and the front and side surfaces of the main body are respectively provided with openings and through holes for allowing air to enter and exit the interior of the main body, so The inside of the main body is provided with guide vanes for forming an inclined channel from the opening to the through hole. 2. The ventilation grille according to claim 1, characterized in that said main body comprises a cylindrical frame and a sleeve having a first guide vane forming a part of said guide vane and enclosing said frame , the front of the sleeve is combined with a front grille with second guide vanes for extending the channel formed by the first guide vanes. 3. The ventilation grille according to claim 2, characterized in that one end of the frame is provided with a flat plate fixed to the outer wall, and an air flow channel is formed between the first guide vane and the flat plate for making the The airflow flowing into the inside of the main body flows. 4 . The ventilation grill according to claim 3 , wherein the frame is provided with a plurality of first through holes circumferentially surrounding the air flow channel. 5 . The ventilation grill according to claim 4 , wherein a second through hole corresponding to the position and size of the first through hole of the frame is formed on the side of the sleeve. 6 . 6. The ventilation grille according to claim 5, characterized in that a first insect-proof net is arranged between the inner peripheral surface of the sleeve frame and the outer peripheral surface of the frame to prevent pests from invading the through holes . 7 . The ventilation grill according to claim 1 , wherein a connecting portion protruding outward of the main body is formed on the main body for connecting the duct. 8 . 8 . The ventilation grill according to claim 7 , wherein the joint portion forms an insertion groove for inserting a partition plate that divides the duct into an air supply duct and an exhaust duct. 9. The ventilation grill according to claim 8, characterized in that the main body is provided with partitions for dividing the internal space into a communication space connecting the air supply pipe and a communication space connecting the exhaust pipe to connected space. 10. The ventilation grille according to claim 2, characterized in that the central portion of the front grille forms a sealing surface for shielding the duct, and the periphery of the sealing surface forms a hole for letting air in and out. open department. 11. The ventilation grille according to claim 10, characterized in that a plurality of protrusions are formed on the rear side of the front grille, and protrusion receiving holes for accommodating the protrusions are formed on the front side of the sleeve , and when the protrusion is inserted into the protrusion receiving hole, the screw is connected to the screw connection groove formed on the protrusion, thereby combining the front grille and the sleeve frame. 12. The ventilation grille according to claim 11, characterized in that a second insect-proof net is arranged between the sleeve frame and the front grille to prevent the intrusion of pests. 13. The ventilation grill according to claim 1, wherein the main body is provided with a rainwater intrusion preventing platform protruding outward of the main body to prevent rainwater from intruding into the inside of the pipe. 14. The ventilation grille according to claim 13, characterized in that the rainwater intrusion preventing platform is provided with a rainwater outlet for draining the rainwater intruded into the pipe.

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