KR102170270B1 - Fan assembly against to fire - Google Patents

Abstract

The present invention relates to a blower assembly which allows a housing module to be provided with a door that is automatically opened when a fire occurs to reduce exhaust resistance of the blower when the fire occurs, thereby increasing an exhaust air volume. The blower assembly according to an embodiment of the present invention includes: the housing module having a built-in fan module including a motor for rotating a propeller and having an outlet through which the air sucked by the fan module is discharged and additional outlet holes formed at both sides of the outlet; a door part coupled to a side of the housing module to be foldable so as to close the outlet holes; and an opening and closing means for fixing the door part to selectively open and close the door part according to the temperature around the housing module.

Description

Blower assembly against to fire {Fan assembly against to fire}

The present invention relates to a blower assembly, and more particularly, to a blower assembly in preparation for a fire for increasing the amount of air blown by opening an additional air outlet when a fire occurs in an area in which the blower assembly is installed.

In general, a blower for ventilation is installed in an underground space such as an underground parking lot or an underground shopping center of a commercial building or apartment. Since these underground spaces are only open at the entrance and exit, it is difficult to ventilate the air inside the underground space to the outside air as the depth of the underground parking lot or the underground shopping center gets deeper. For this reason, a blower that discharges the air inside the underground space to the outside is essential. I can.

A blower fan installed in an underground space such as an underground parking lot generally has a back draft damper (BDD) installed at the outlet of the air to protect the blade and motor or to rotate the blade by the headwind. The back draft damper is pivotally coupled horizontally to the ground surface at the outlet side of the blower fan, and has a configuration that is pivoted upward by the wind power of the blower fan. That is, the back draft damper is configured to rotate so as to maintain a state in which the outlet is closed when the blower fan is not driven, and maintain a state substantially parallel to the wind direction when the blower fan is driven.

However, when a fire occurs, the temperature of the air rises, and as the volume of the air increases and the density decreases, the back draft damper acts as a factor of impeding the rapid exhaustion of soot. The increase in air volume and rapid discharge of smoke due to temperature is a very important factor for preventing human damage and can relieve the difficulty in rapid fire fighting work. When a fire occurs, the exhaust air volume of the blowing fan is required more than the exhaust air volume when no fire occurs, so an example of adjusting the exhaust air volume using a pole conversion motor for converting the rotation speed has been implemented. However, the pole conversion motor has the disadvantage of lowering the efficiency compared to the normal constant speed motor, and thus, there is a problem that increases the energy cost of the consumer.

Korean Patent Publication No. 10-2001-0058467 (application number: 10-1999-0065800, publication date: 2001.07.06)

The present invention is to solve the above-described problem, and the blower assembly of the present invention provides a blower assembly capable of increasing the exhaust air volume by reducing the exhaust resistance of the blower in the event of a fire by having a door in the housing module that automatically opens when a fire occurs. It aims to provide.

In the blower assembly against fire according to an embodiment of the present invention, a fan module including a motor that rotates a propeller is built-in, and an outlet through which air sucked by the fan module is discharged and additional discharge on both sides of the outlet A housing module in which a ball is formed; A door part foldably coupled to a side of the housing module to close the discharge hole; And an opening/closing means for fixing the door part to selectively open and close the door part according to a temperature around the housing module.

Here, the housing module includes: a housing formed to face the air inlet and the outlet, and a bag draft damper installed at the outlet to close the outlet and open the outlet by exhaust air discharged by the fan module. And the discharge holes formed in both side walls of the housing adjacent to the back draft damper.

In addition, the door portion has a plate-shaped door corresponding to the discharge hole to close the discharge hole, a hinge hingedly coupled to the door to the side wall of the housing, and is embedded in the hinge to open the discharge hole. And a torsion spring for applying an elastic force to the door, wherein one side of the hinge may be fixedly coupled to the door and the other side fixedly coupled to the housing.

Further, the opening/closing means may release the fixing of the door so that the door opens the discharge hole when the temperature around the housing module increases.

In addition, the opening and closing means includes a first latch housing provided in the housing, a second latch housing provided in the door to face the first latch housing, and a latch slidable between the first latch housing and the second latch housing. , One end is fixedly coupled to the first latch housing and the other end is fixedly coupled to the clasp, and an elastic spring and the clasp are inserted into the second latch housing to apply an elastic restoring force to the clasp. It includes a melting support portion for supporting the latch while overcoming the elastic restoring force to maintain the closed state of the door, and the melting support portion may be melted and removed by high temperature heat.

In addition, the melting support may have a melting point of 50 ℃ to 70 ℃.

In addition, the melting support may be made of a bismuth alloy having a melting point of 60 ℃.

According to the blower assembly of the present invention, the housing module is provided with a door that automatically opens when a fire occurs, so that exhaust resistance is reduced when a fire occurs, thereby increasing the air volume of the blower.

1 is a schematic diagram of an underground parking lot in which a blower assembly according to an embodiment of the present invention is installed.
2 is a perspective view of a blower assembly according to an embodiment of the present invention.
3 is a side perspective view of the blower assembly of FIG. 2.
4 is a side view of the blower assembly of FIG. 2.
5 is a side view showing the movement of the back draft damper when the fire of FIG. 2 occurs.
6 is a cross-sectional view showing the inside of the blower assembly of FIG. 2.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. The present invention may be implemented in various different forms, and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and the same reference numerals are assigned to the same or similar components throughout the specification.

In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the possibility of addition or presence of elements or numbers, steps, actions, components, parts, or combinations thereof is not preliminarily excluded. Further, when a part such as a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the case where the other part is "directly above" but also the case where there is another part in the middle. Conversely, when a part such as a layer, film, region, plate, etc. is said to be "under" another part, this includes not only the case where the other part is "directly below", but also the case where there is another part in the middle.

As shown in Fig. 1, the blower assembly 100 according to the embodiment of the present invention is installed on the inner wall of the underground parking lot 12 of a commercial building 11 or apartment to exhaust the internal air of the underground parking lot 12. The air discharged to 13) and discharged to the flue 13 may be discharged to the outside through the exhaust tower 14 on the ground. Meanwhile, in the blower assembly 100, a back draft damper 124 is installed at the outlet 125 of the air in order to reverse rotation of the propeller 111 due to headwind or to protect the propeller 111 and the motor 112. The back draft damper 124 is pivotally coupled to the outlet 125 of the blower assembly 100 and rotates upward by the wind power of the blower assembly 100. That is, the back draft damper 124 opens the outlet 125 by wind power while driving the blower assembly 100. However, when a fire occurs in an underground space such as the underground parking lot 12, the temperature of the air increases, and as the density of the air decreases, the turning angle of the back draft damper 124 becomes smaller than usual, and the outlet It rather hides (125). Accordingly, when a fire occurs, the amount of air discharged from the blower assembly 100 becomes smaller than that of the air volume when no fire occurs, so that the air blowing efficiency in the underground space is lowered. That is, the toxic smoke generated in the case of a fire in the underground space must be quickly discharged, but there is a problem in that the back draft damper 124 covers the discharge port 125, making it more difficult to discharge the toxic smoke. The blower assembly 100 of the present embodiment automatically discharges the discharge holes 126 when the door 131 closing the additional discharge holes 126 formed on both sides of the housing 121 is fired and the ambient temperature rises. ) Is operated to open to reduce the exhaust resistance applied from the back draft damper 124, and further exhaust the exhaust air through the flue 13, thereby solving this problem. The structure and function of the blower assembly 100 of the present embodiment will be described in detail with reference to FIGS. 2 to 6 below.

As shown in FIG. 2, the blower assembly 100 according to the embodiment of the present invention includes a fan module 110 including a motor 112 for rotating and driving the propeller 111, and accommodating the fan module 110. It may include a housing module 120, a door portion 130 that is foldably coupled to both side portions of the housing module, and an opening and closing means 140 for selectively opening and closing the door portion 130.

The fan module 110 is for moving air by generating artificial wind, and fixes the propeller 111 and the motor 112 and the motor 112 for rotationally driving the propeller 111 to the housing module 120. It may include a bracket (not shown).

Blowers are divided into fans, blowers, and compressors according to the pressure of air generated by rotating the propeller.A fan that generates a pneumatic pressure of 1000mmAq or less, and a blower that generates a pneumatic pressure of 10000mmAq or less , A compressor that generates more than 10000mmAq of air pressure is classified as a compressor, but it is also commonly referred to as a blower or a blower fan. The blower performs ventilation of large indoor spaces such as underground parking lots, and performs ventilation and exhaust ventilation in case of fire, and an axial fan or jet fan that generates wind in the axial direction is mainly used. Axial fan or jet fan can be manufactured in a small size to be installed in a small space, can rotate at high speed, and has a large air volume, so it is used for axial inflow/outflow, ventilation of underground spaces, cooling towers and air conditioning.

The propeller 111 of the fan module 110 is configured to have various diameters, and is variously selected and applied from 500mm to 1500mm in diameter according to the installation environment, and the 500mm propeller 111 has an air volume of 10-20㎡/sec and Wind pressure of 5~20mmAq may be generated.

The motor 112 of the fan module 110 generates a rotational driving force that rotates the propeller 111, and a fully enclosed three-phase induction motor capable of continuous operation in an underground space may be generally used. As the motor 112, a motor having an electric power of 1.5 to 15 kW may be applied to rotate the propeller 111 of 500 mm to 1500 mm at 900 to 1800 rpm.

The housing module 120 accommodates the fan module 110 therein and is fixedly installed on the wall or ceiling of an underground indoor space such as an underground space, and is a space inside so that the fan module 110 is fixedly installed. The formed hollow box-shaped housing 121 and the shroud 122 provided adjacent to the propeller of the fan module 110 on the front side of the housing 121 and the shroud 122 are fixedly coupled to the shaft of the motor 112 It may include a guide hood 123 for guiding the inflow of ambient air in a shape extending radially from.

The box-shaped housing 121 has a fan module 110 fixedly installed therein, and has a front side and a rear side open to discharge the air sucked by the fan module 110 to the outside. That is, a suction port is formed on the front side, which is a portion where the fan module 110 is installed, and an outlet is formed on the rear side, which is the other side. Referring to FIG. 3, a plurality of back draft dampers 124 for preventing the inflow of headwind are pivotally coupled to the box-shaped housing 121 on the rear side of the box-shaped housing 121. The back draft damper 124 is positioned so as to close the outlet 125 by its own weight when the motor 112 is not driven, and when wind is formed by the drive of the motor 112, it is rotated upwards by the wind pressure to open the outlet 125. By opening, it is possible to prevent the headwind in the direction opposite to the blowing direction and the inflow of foreign matters due to the headwind.

In addition, the box-shaped housing 121 has an additional discharge hole 126 capable of discharging air (wind) on both sides thereof, and the discharge hole 126 is closed by the door part 130 and the door part ( 130) can be selectively opened and closed. The discharge hole 126 is formed to pass through the housing 121 in a rectangular shape adjacent to the back draft damper 124, and may be formed in a longitudinal direction of the housing 121, that is, a long rectangle in the surface direction.

The door part 130 is for selectively opening and closing the additional discharge holes 126 formed on both sides of the housing 121, and the door 131 composed of a rectangular plate corresponding to the shape of the discharge hole 126 and It may include a hinge 132 for hinge-coupled to the door 131 to the housing 121. The door 131 maintains the state of closing the discharge hole 126 in a normal environment (no fire), and opens the discharge hole 126 when a fire occurs in an underground space and the ambient temperature rises. To this end, a torsion spring (not shown) that elastically supports the door 131 in the opening direction may be provided inside the hinge 132. That is, the hinge 132 supports the door 131 rotatably with respect to the housing 121 so that the door 131 is opened and closed, and the torsion spring provided inside the hinge 132 exerts elastic force on the door 131 ) May be always applied to the door 131 in the open direction.

The opening/closing means 140 is for selectively opening and closing the door 131, and may be configured as a pair of latches respectively fixing the upper and lower sides of the door 131 with reference to FIG. 5. That is, the opening and closing means 140 includes a first latch housing 141 fixedly coupled to the housing 121, a second latch housing 142 fixedly coupled to the door 131 opposite to the first latch housing 141, A clasp 143 that can slide between the first latch housing 141 and the second latch housing 142, one side is fixed to the first latch housing 141 and the other side is fixed to the clasp 143, an elastic spring 144 ) And a melting support part 145 that is inserted into the elastic spring 144 and melted by high temperature heat.

The first latch housing 141 has a box shape with one side open so that the cross section has a'C' shape, and a receiving space in which the latch 143 is slidably moved and accommodated is formed. In this receiving space, the melting support part 145 is fixedly coupled to the coupled elastic spring 144, that is, the upper end of the elastic spring 144 is fixedly coupled to the upper wall of the receiving space. The first latch housing 141 is manufactured separately from the housing 121 and can be fixedly coupled to the housing 121 by welding or the like. Unlike this, when the housing 121 is manufactured, the first latch housing 141 is integrated. It can also be molded.

Similar to the first latch housing 141, the second latch housing 142 has a box shape with one side open so that the cross section has a'c' shape, and the latch 143 is slidably moved and received therein. Space is formed. The second latch housing 142 is manufactured separately from the door 131 and can be fixedly coupled to the door 131 by welding or the like. Unlike this, when the door 131 is manufactured, the second latch housing 142 is integrated. It can also be molded.

The clasp 143 slides between the first latch housing 141 and the second latch housing 142 to selectively open and close the door 131, and may have a bar shape having a rectangular cross section. The clasp 143 is fixedly coupled to the elastic spring 144 at the upper end, and when the melting support part 145 is melted, the elastic restoring force of the elastic spring 144 causes the first latch housing ( By moving to 141, the door 131 can be opened. That is, the latch 143 is inserted into the second latch housing 142 in a normal state (no fire) to support the door 131 in a closed state, and the first latch by the elastic spring 144 when a fire occurs. It is inserted into the housing 141 to make the door 131 open.

One end of the elastic spring 144 is fixedly coupled to the first latch housing 141 and the other end is fixedly coupled to the clasp 143 to apply an elastic restoring force to the clasp 143. That is, the elastic spring 144 is tensioned in a normal state (no fire) to apply an elastic restoring force to the clasp 143, and when a fire occurs, the clasp 143 may be pulled toward the first latch housing 141 to be supported.

The melting support part 145 is made of an alloy or resin material that is melted by high temperature heat, and may have a cylindrical shape so as to be embedded in the elastic spring 144. The melting support part 145 maintains its shape in a normal state, that is, at room temperature where no fire has occurred, while overcoming the elastic restoring force of the elastic spring 144 and inserting the clasp 143 into the second latch housing 142. Support the clasp 143 to retain it. In addition, the melting support part 145 may be melted and removed when a fire occurs and the temperature around the blower assembly 100 increases. The melting support part 145 of this embodiment may be made of an alloy or resin mixture having a melting point of about 50°C to 70°C. For example, the melting support part 145 is a bismuth alloy (bismuth (Bi) 40-50%, lead (Pb) 25-30%, tin (Sn) 12.5-15.5%, cadmium (Cd)) having a melting point of 60°C. 12.5%) can be made of wood metal.

In this embodiment, the opening and closing means 140 is provided with a pair in one door 131, and both pairs are provided in the blower assembly 100, but unlike this, if the door 131 can be selectively opened and closed, one door The number of opening and closing means 140 provided in 131 may be freely designed and changed by those skilled in the art.

In addition, in this embodiment, the opening/closing means 140 uses a latch consisting of an elastic spring 144 and a melting support part 145, but unlike this, a temperature sensor that senses the temperature around the blower assembly 100 to generate an electric signal. Alternatively, a smoke sensor that senses smoke and generates an electrical signal and an electronic latch driven by the electrical signal may be used, or a thermal fuse that melts when reaching a specific melting point to open and close the door 131 may be used.

The blower assembly 100 of this embodiment having the above-described configuration can maintain an appropriate air volume by opening the door 131 of the housing 121 when a fire occurs in an underground space such as an underground parking lot. It will be described below with reference to FIG. 6.

As shown in FIG. 4, the blower assembly 100 is normally driven in a normal state in which no fire has occurred, causing wind to move from left to right in the drawing to move air. At this time, the door 131 of the housing 121 is maintained in a closed state, and the back draft damper 124 is maintained in a substantially horizontal state with respect to the ground surface by wind pressure of the wind.

As shown in FIG. 5, when a fire occurs in the space where the blower assembly 100 is installed, the air expands due to heat generated during the fire, thereby reducing the density of the air, so that the back draft damper 124 is It sinks in the direction, that is, in the direction of arrow A. In this case, although the blower assembly 100 must operate normally to discharge smoke to the outside, the amount of air discharged from the blower assembly 100 decreases due to the lowering of the back draft damper 124. In order to solve such a problem, the blower assembly 100 of the present embodiment is provided with a pair of doors 131 in the housing 121, and the door 131 is automatically opened when a fire occurs.

As illustrated in FIG. 6, when a fire occurs and the temperature around the blower assembly 100 increases, the opening/closing means 140 may be operated to automatically open the door 131. When the temperature around the blower assembly 100 of the present embodiment reaches the melting point of the melting support part 145, for example, when it reaches 60°C, which is the melting point of the melting support part 145 made of wood metal, the melting support part 145 ) Starts to melt and the melting support part 145 is melted and removed, so that the clasp 143 slides into the interior of the first latch housing 141 and is inserted by the elastic restoring force of the elastic spring 144, thereby causing the door 131 may be in an open state. Due to the elastic force of the torsion spring (not shown) built in the hinge 132 of the door 131, the door 131 is automatically opened to the outside of the housing 121 to open the discharge hole 126. 3) In this way, when a fire occurs, the additional discharge hole 126 of the housing 121 is opened, so that the air inside the housing 121 is discharged to the outside through the discharge hole 126 to maintain an appropriate discharged air volume. Can be.

Although the embodiments of the present invention have been described above, the spirit of the present invention is not limited to the embodiments presented in the present specification, and those skilled in the art who understand the spirit of the present invention can add components, Other embodiments may be easily proposed by changes, deletions, additions, etc., but it will be said that this is also within the scope of the present invention.

11: commercial building 12: underground parking lot
13: year 14: exhaust tower
100: blower assembly 110: fan module
111: propeller 112: motor
120: housing module 121: housing
124: back draft damper 125: outlet
126: discharge hole 130: door part
131: door 132: hinge
140: opening and closing means 141: first latch housing
142: second latch housing 143: latch
144: elastic spring 145: melting support

Claims (5)

A housing module having a built-in fan module including a motor for rotating the propeller and having an outlet through which air sucked by the fan module is discharged and additional outlet holes formed at both sides of the outlet; A door part foldably coupled to a side of the housing module to close the discharge hole; And an opening and closing means for fixing the door to selectively open and close the door according to a temperature around the housing module, wherein the blower assembly comprises:
The opening/closing means slides between a first latch housing provided in the housing of the housing module, a second latch housing provided in the door of the door unit so as to face the first latch housing, and the first latch housing and the second latch housing. A movable clasp, one end is fixedly coupled to the first latch housing, and the other end is fixedly coupled to the clasp to apply an elastic restoring force to the clasp to the first latch housing, and the clasp is the second latch housing A blower assembly against fire, characterized in that it is inserted into a melting support part that supports the clasp while overcoming the elastic restoring force to maintain the closed state of the door, and the melting support part is melted and removed by high temperature heat. .
The method according to claim 1,
The housing module
A housing having an air inlet and an outlet facing each other, a bag draft damper installed at the outlet to close the outlet but opening the outlet by the exhaust air discharged by the fan module, and adjacent to the back draft damper Blower assembly for fire, characterized in that it comprises the discharge holes formed in both sidewalls of the housing.
The method according to claim 2,
The door portion includes a plate-shaped door corresponding to the discharge hole to close the discharge hole, a hinge hingedly coupling the door to a side wall of the housing, and the door is built in the hinge to open the discharge hole. And a torsion spring for applying an elastic force to the hinge, wherein one side of the hinge is fixedly coupled to the door and the other side is fixedly coupled to the housing.
The method of claim 3,
The opening and closing means releases the fixing of the door so that the door opens the discharge hole when the temperature around the housing module increases.
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