KR19990004018U - Underground Parking Lot Jet Fans - Google Patents

Abstract

The present invention relates to a jet fan for an underground parking lot multi-stage exhaust system, the fan is coupled to the inner middle of the housing so as to rotate by the driving force of the motor, the front portion of the vortex flow of the wind generated by the fan changes into a linear flow The guide vanes are coupled to each other, and the rear portion of the housing is configured to include a module of noise prevention means for absorbing and mitigating noise caused by blowing.

The present invention is a vortex generated from the fan is guided by the guide vane is converted into a straight flow, and concentrated in the center of the axis can be discharged to a farther distance to improve the ventilation capacity, the housing up and down the slope by the hanger means Since the installation can be easily adjusted from side to side, there is an advantage that the construction work becomes easier.

Description

JET FAN FOR UNDERGROUND PARKING AREA CASCADE VENTILATION SYSTEM

The present invention relates to a jet fan for a multi-stage exhaust system in an underground parking lot, and in particular, an underground parking lot that changes the vortex generated from the fan to move in a straight direction by a guide vane and absorbs and mitigates the noise by a noise prevention module. A jet fan for a multistage exhaust system.

Exhaust of car parking lot should consider carbon monoxide emission problem, fuel combustion gas exhaust problem which causes nausea and headache along with the risk of fire. In addition, smoke of nitrogen oxide and diesel engine should be considered. Ventilation to a lower than acceptable level will solve other problems.

Exhaust systems should be planned to maintain adequate pollution levels, whether mechanical or natural convection, and for multi-storey car parks or very large parking lots an independent, exhaust-operated exhaust system is effective.

Exhaust systems are categorized into a single-supply type that only draws in outside air, a single-type type that discharges indoor air to the outside, and a combined type of exhaust type. A fan is used and a sensor is used.

The air supply fan of the multi-stage jet exhaust system introduces fresh air required for ventilation into the room. The jet fan directs contaminated indoor air toward the exhaust fan and distributes fresh air introduced from the supply fan to the room. The exhaust fan discharges the polluted air induced by the jet fan to the outside. The sensor detects indoor pollution levels and automatically controls the operation and shutdown of the fans.

As described above, the conventional jet fan for the multi-stage jet exhaust system, which is used for the ventilation of the parking lot, has a problem in that eddy currents are generated in the fan and the reach distance is shortened, thus increasing the number of installations per unit area.

In addition, even if the noise prevention means is not employed, or even if it is adopted, it is adopted as a fixed type, there is a fear that the pathogens inhabit the disease by the dust and moisture accumulated in the sound-absorbing and noise material of the noise prevention means with long-term use. There was a problem that can not be managed hygienically.

In addition, when the housing is installed on the ceiling of the installation place, it is difficult to adjust the inclination of the up, down, left and right, so that the construction time and the number of people increase, thereby increasing the construction date and cost.

The present invention was devised to solve the above-mentioned conventional defects and problems, and the vortices generated from the fan can be changed to travel in the straight direction by the guide vanes, and the noise prevention module can absorb and mitigate the noise. To provide a jet fan for an underground parking garage multi-stage exhaust system.

In order to achieve the above object, the jet fan for the underground parking lot multi-stage exhaust system of the present invention is coupled to the fan in the middle of the housing so as to rotate with the driving force of the motor, and in front of the vortex flow of the wind generated from the fan. The guide vanes for changing into a straight stream are combined.

The rear portion of the housing is coupled to the module of the noise prevention means for absorbing and mitigating the noise caused by the blowing.

The outer circumferential surface of the middle portion of the housing is coupled to the hanger means to easily adjust the inclination of the up and down, left and right, the fixing element of the hanger means is formed with a lamp box, the lamp is coupled to the front, inside the fan and the operation of the lamp Built-in parts for controlling the

The multi-stage jet exhaust system employing the jet fan of the present invention forms a flow line connected to the air supply fan, the jet fan, and the exhaust fan to quickly exhaust contaminated air without stagnation, and to provide a relatively small exhaust fan. It is possible to completely remove the shadow zone, which is a stagnation zone of air, by using a short length fan, and freely installs the confined space in a narrow space, effectively mixing air polluted with fresh air and directing it to the exhaust fan. can do. In addition, there are no auxiliary facilities such as duct lines, electrical wiring is simple, and the ultra-short jet fan requires extremely small installation space, and is hardly affected by the heights of buildings, beams, columns and other obstacles.

Furthermore, the jet fan for the multi-stage exhaust system for underground parking lot according to the present invention can reduce the number of installations by the straight flow of air, increase the air volume, wind speed and reach, reduce noise, and greatly improve performance and value. The ultra-lightweight jet fan has no load on the building structure, and can securely hold the fan with an anchor bolt with the smallest diameter. It is easy to adjust the posture and direction with the bracket of the hanger means. By reducing the cost, construction cost can be greatly reduced.

1 to 5 is a view of the jet fan for the multi-stage exhaust system underground parking lot of the present invention,

1 is a perspective view.

2A and 2B are longitudinal cross-sectional views showing different embodiments.

3 is an explanatory view of the operation of the guide vane.

Figure 4 is a cross-sectional view showing a noise preventing member coupling structure.

5 is a perspective view of the guide vane.

Explanation of symbols for main parts of the drawings

10 housing 13 middle part

20: fan 21: motor

30: guide vane 31: core

31a: fixed wing 32: front guide

33: curved rear guide portion 40: noise prevention means

50: hanger means 51: fixed element

52: rotation element 53: fixed rod

54: Bracket 55: Lamp Box

56: lamp 57: shaft bolt

57a: nut 58: fixing member

Hereinafter, with reference to the accompanying drawings, the present invention as described in detail as follows.

1 is a perspective view of a jet fan for an underground parking lot multi-stage exhaust system according to the present invention, Figures 2a, b is a longitudinal cross-sectional view showing different embodiments, Figure 3 is a diagram illustrating the operation of the guide vanes, respectively, 4 is a cross-sectional view showing a coupling structure of the noise prevention member, and FIG. 5 is a perspective view of the guide vane.

1 and 2A, the fan 20 is coupled to the inner middle of the housing 10 so as to rotate with the driving force of the motor 21, and in front of it, a vortex of wind generated from the fan 20. The guide vane 30 for changing the mold flow into the linear flow is configured to be coupled.

The rear portion of the housing 10 is coupled to the noise prevention means 40 for absorbing and mitigating the noise caused by the blowing.

For example, the housing 10 has a structure manufactured by being separated into an inlet 11, an outlet 12, and an intermediate part 13, and assembled, and as shown in FIG. 4, a fastening part of the inlet 11 ( 11a), the fastening portion 13a of the intermediate portion 13 and the fastening portion 12a of the discharge portion 12 are fastened and assembled by the rivets 14.

A hanger means 50 is coupled to the outer circumferential surface of the middle portion 13 of the housing 10.

The fan 20 is provided with a plurality of rotor blades (2 o) on the outer circumferential surface, and is fixed to the shaft of the motor 21, the motor 21 is a plurality of (for example three) fixed table ( It is fixed to the inner peripheral surface of the intermediate part 13 of the housing | casing 10 by 22). The holder 22 is bolted to the inner end of the fastening portion 21b formed on the casing 21a of the motor 21, and the outer end is fastened to the inclined inner circumferential surface of the intermediate portion 13 by rivets 14. .

The guide vane 30 is fixed to a rear portion of the inner circumferential surface of the discharge part 12.

3 and 5, the guide vane 30 is provided with a plurality of fixed blades 31a (for example, eight) on the outer circumferential surface of the cylindrical core 31, and an outer end of each of the fixed blades 31a has a housing ( It is fixed to the inner peripheral surface of the discharge portion 12 of 10).

The rotor blade 2oa of the fan 20 and the fixed blade 31a of the guide vane 30 are bent in opposite directions.

The rotor blade 2oa of the fan 20 is curved to be bent in one direction by a predetermined angle (θ; for example, 30 degrees) with respect to an imaginary horizontal line L disposed at equal intervals on the outer circumferential surface of the hub 20b. The fixed vane 31a of the guide vane 30 is formed in a curved shape so as to contact the virtual horizontal lines L1 and L2 disposed on the outer circumferential surface of the core 31.

The horizontal line L1 is disposed parallel to the outer circumferential surface of the core 31 at equal intervals, and the horizontal line L2 has one side end in contact with the horizontal line L1 and the other end portion in contact with the rear end of the core 31. It is equally spaced with the horizontal line L1. In FIG. 3, P shows one point where horizontal lines L1 and L2 meet.

2A, 2B and 3, the guide vane 30 is conical front guide 32 is coupled to the front portion of the core 31. The rear end of the core 31 has a structure in which the rear end is opened as shown in FIGS. 2A and 3, or the curved rear guide portion 33 is coupled to the rear end as shown in FIG. 2B. The rear guide portion 33 may be formed in another shape such as a cone shape in addition to the hemispherical shape.

As illustrated in FIG. 2A, the rear end portion of the core 31 of the guide vane 30 may be partially inserted into and support the motor 21 of the fan 20 into the core 31.

As shown in FIG. 4, the noise preventing means 40 inserts the noise preventing member 41 into the inlet 11 of the housing 10 and inserts the U-shaped fixed channel 42 into the rear end thereof. Thereafter, the outer peripheral surface of the inflow portion 11 of the housing 10 is fastened with a plurality of rivets 14.

The noise preventing means 40 may be coupled not only to the inner rear portion of the housing 10 but also to the middle portion or the front portion, and may be detachably coupled in some cases.

As shown in FIGS. 1 and 2a, the hanger means 50 is pivotally coupled to both side plates of the fixing element 51 fixed to the housing 10 by a shaft bolt 57 and a nut 57a. And, the fixing rod 53 is fixed to the upper portion in the middle of the rotating element 52, the bracket 54 is configured to be rotatably coupled by the coupling member 58 to the upper end of the fixing rod 53. It is.

The fixing element 51 of the hanger means 50 is a lamp box 55 is formed together, the lamp 56 is coupled to the front, inside the lamp box 55 of the fan 20 and the lamp 56 Built-in parts to control operation.

The lamp 56 is not limited to the lamp box 55 but may be fixed to other positions such as the side wall of the main wall of the housing 10 as necessary.

As described above, the jet fan for the underground parking lot multi-stage exhaust system according to the present invention can be tilted vertically and horizontally by the hanger means 50 when the plurality of jet fans are installed on the ceiling of the underground parking lot. The angle of) can be easily adjusted by adjusting the angle to the installation location.

When power is applied to the motor 21 of the installed exhaust plate and the fan 20 rotates, the lamp 56 is turned on, and the wind generated as the fan 20 rotates is discharged forward, and the plurality of jet fans The discharged wind is effectively moved to the fresh outside air supplied by the outside air inflow fan by discharging the muddy air in the parking lot by moving forward in order forward.

When the fan 20 rotates counterclockwise with reference to FIG. 1, the flow of wind moves forward while causing a counterclockwise vortex, as shown in FIG. 3, and the fixed vane 31a of the guide vane 30. Since the fan 20 is formed to be bent in the opposite direction to the rotary blade 2oa of the fan 20, the vortices generated from the fan 20 are guided to the fixed blade 31a of the guide vane 30, thereby removing the rotational force and going straight forward. It flows and is guided to the cone-shaped front guide portion 32 coupled to the front portion of the guide vane 30 is concentrated toward the axis center and discharged to a long distance.

In addition, the noise preventing means 40 coupled to the rear portion of the housing 10 is able to remove and mitigate the noise caused by the operation of the fan 20 and the flow of wind.

As described above, the present invention can improve the ventilation capacity by vortices generated by the fan being guided by the guide vanes to be converted into a straight flow, and being concentrated at the axis center to be discharged at a longer distance, thereby installing per unit area. There is an advantage that can be installed by reducing the number.

In addition, the noise can be absorbed and mitigated by the noise preventing means, and the housing can be easily installed by adjusting the inclination up and down, left and right by the hanger means, and thus there is an advantage in that the construction work is simplified.

Although the embodiments of the present invention have been described so far, the present invention is not limited thereto, and various embodiments that can be modified and changed within the true spirit and scope of the principles described and claimed are within the protection scope of the present invention. You will have to understand.

Claims (5)

The fan 20 is coupled to the inner middle of the housing 10 to rotate with the driving force of the motor 21, and a front part of the fan 20 is a guide for changing the vortex flow of the wind generated by the fan 20 into a linear flow. Jet fan for underground parking garage multi-stage exhaust system, characterized in that the vane 30 is configured to combine. The jet fan of the underground parking lot multi-stage exhaust system according to claim 1, wherein the rear part of the housing (10) is coupled to noise prevention means (40) for absorbing and mitigating noise caused by blowing. A hanger means (50) is coupled to an outer circumferential surface of the intermediate portion (13) of the housing (10), and the hanger means (50) of the fixing element (51) fixed to the housing (10). Rotating element 52 is hinged to both side plates by the shaft bolt 57 and the nut 57a, the fixing rod 53 is fixed to the middle of the rotating element 52, the fixing rod 53 Bracket 54 is rotatably coupled to the upper end of the lamp) and the lamp box 55 is formed on the fixing element 51 so that the lamp 56 is coupled to the front, and the fan 20 and the lamp therein. A jet fan for an underground parking garage multi-stage exhaust system, characterized in that the parts for controlling the operation of the (56) are built-in. According to claim 1, The guide vane 30 is formed on the outer circumferential surface of the cylindrical core 31 a plurality of fixed blades (31a) are bent in a direction opposite to the fixed blades (31a) of the fan 20, the core ( The front part of the 31) is a jet fan for the underground parking garage multi-stage exhaust system, characterized in that the cone-shaped front guide 32 is configured to be coupled. The jet fan of claim 1, wherein a curved rear guide portion (33) is formed at a rear portion of the core (31).