KR20140097861A - pan system of tunnel - Google Patents

Abstract

The present invention relates to an air blower system for an underground district system to flow in cold outdoor air into a subway tunnel, an underground roadway or an underground cable tunnel. Wind power generated by an air blower can be flowed into the vertical holes vertically formed at a predetermined interval, and can extract heat of the underground district to the outside. Through the vertical holes, the same amount of cold outdoor air can be flowed into the underground district to lower the temperature inside the underground district, while enhancing the durability of the underground district. Furthermore, in regards to forming the blades of the air blower, the present invention is capable of minimizing the noise generated from the air blower by forming the tip portion of the blades wider than the hub portion, and preventing the generation of noise using an additional vibration-proof system and silencing device.

Description

[0001] PAN SYSTEM OF TUNNEL [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a ventilation system for a subterranean city, an underground driveway, or an underground cable tunnel. Especially, the heat inside the underground sphere is taken out to the outside by the wind generated from the blower through the vertical hole formed vertically at the upper end of the underground sphere, so that a sufficient amount of air can be introduced into the cold air from the outside, To reduce the temperature and to improve the durability of the underground sphere.

Further, in forming the blades of the blower, the tip portion of the blades is formed to be wider than the hub portion, so that the noise generated from the blower is minimized and the noise generated through the dust- ≪ / RTI >

Generally, underground space is being actively used due to the overcrowding of cities these days. In particular, the development of subways and the installation of tunnels where cables and various lines are installed are actively underway.

Such tunnels such as subway or underground telecommunication joints have a phenomenon in which heat is constantly generated due to heat generation in a transmission line, a machine, an electric device, and a transmission line. That is, the high heat generated from the power line or the communication line side may cause transmission efficiency to be extremely poor, lead to discharge of electric current, and may lead to inaccurate transmission of communication. In addition, due to the high temperature, the durability of the line is low and it is highly likely to have a burden of frequent replacement.

Furthermore, the heat generated from the transmission lines, cables, and lines may weaken the durability of the tunnel itself. In such a case, there is always a need for additional means to reduce the heat inside the tunnel. Conventionally, a method of supplying the air outside the ground to the inside of the underground by means of removing the heat has been taken, which has had a slight result. Too much power and noise must be handled, and it is inconvenient and inconvenient especially for the residents near the ventilation openings.

The present invention provides an underground ventilation system for introducing cold air outside the subway, underground roadway or underground cable tunnel. Especially, the heat inside the underground sphere is taken out to the outside by the wind power generated from the blower through the straight hole formed at a regular interval vertically at the upper end of the underground sphere, so that the missing air can flow into the cold air from the outside Secondly, a water atomizing device is installed in the middle between the air supply mechanism and the exhaust port to lower the temperature in the underground sphere by the evaporative cooling effect of the water sprayed at the time of temperature rise. In the third place, And to provide a ventilation system for a basement so as to improve the durability of the underground sphere by keeping the underground sphere always within a predetermined temperature by cooling and spraying the sprayed water by the freezer when the predetermined cooling effect is insufficient.

Further, in forming the blades of the blower, the tip portion of the blades is formed to be wider than the hub portion, so that the noise generated from the blower is minimized and the noise generated through the dust- System.

The ventilation system for a basement according to the present invention comprises a ventilation tunnel (20a) existing between a basement (10) and a grating (12) formed on the ground, for ventilation to the basement (10); A blower 20 installed at one end of the ventilation tunnel 20a and equipped with an inverter motor 21 for sucking and discharging the air on the side of the underground opening 10 to the grating 12 as an external ventilation hole; A muffler 30 installed at the rear of the blower 20 to reduce noise generated from the blower 20 and the motor 21; A temperature sensor (31) for sensing the room temperature, the temperature sensor (31) being mounted in the interior of the underground sphere (10) at a predetermined interval; And an operation panel 32 installed inside or outside of the underground passage 10 to operate and control the blower 20 so as to maintain the ventilation inside the underground passage 10 and the cooling of the air, Thereby improving durability.

The blower 20 is connected to the muffler 30 through a flange connection and the eyebolt 22 is fixed to the upper portion of the ventilation tunnel 20a. A hanger (23) protruding from the upper end of the outer circumferential surface is fastened, and a medal is made through a wire (24) or a chain when a repair or a system is installed; The elastic body 26 for vibration proof is fixed to the support frame 25 fixed to the lower end of the outer circumference of the blower 20 to cancel the vibration and to prevent the noise from being generated. In the flange coupling, a corresponding flange portion 34 corresponding to the flange portion 33 of the blower 20 is provided and another corresponding flange portion 34 corresponding to the flange portion 33 of the muffler 30 is provided at the other end And connects the blower 20 and the muffler 30 via a vibration damping pipe 36 formed of a communicating pipe portion 35 at the center portion. The vibration damping pipe 36 has a circular corresponding flange portion 34 And the other side has a quadrilateral corresponding flange portion 34. The communicating pipe portion 35 is formed in the shape of a bellows pipe 35-1 so that its length can be interlocked.

The flange portion 33 and the corresponding flange portion 34 according to the present invention for a basement ventilating system are provided with a bar body 22 in the form of a cross section in the shape of a cross section so as to cover and cover the flange portion 33 and the corresponding flange portion 34 (72), a spacing bar (70) having a fastening hole (73) passing through the bar body (72) at a predetermined interval in the horizontal direction; The gap bar 70 is dustproofed by using a head 77 made of a rubber or a synthetic resin material that is inserted into the fastening hole 73 and induces fastening and a vibration-proof bolt 76 made up of an insertion tip 78 at the other end. And maintains the shape of a straight line or a cut circular shape according to the shape of the flange portion 33 or the corresponding flange portion 34. A spraying device AB for spraying water to the inside of the underground hole 10 to cool the air In.

In addition, according to the present invention, the spray water supplied to the spraying apparatus AB is supplied through a separate cooling cycle (AD): the duct (40a) is connected to the rear of the silencer (30) The blades 40 of the blower 20 are formed such that the tip portion 41 is wider than the hub side 42 and the blades 40 (A) which is smoothly reduced in thickness without a bent portion is formed at the trailing edge portion of the trapezoidal cross section, thereby minimizing the ease of manufacture and the generation of noise.

According to the present invention, there is an advantage that the durability of the underground sphere is prevented from being weakened due to the high temperature heat generated in the underground sphere, and the air can be supplied to the inside of the underground sphere by natural refinement.

In addition, according to the present invention, the blower may be made of medals through a chain or a wire, and a separate dustproofing facility may be provided at the lower end of the blower. In forming the blades of the blower, the tips of the blades are formed longer than the helical portion, It has the advantage of minimizing noise.

In addition, according to the present invention, the blower has the advantage of minimizing the noise by minimizing the bending or bending process of the trailing edge of the blades and smoothly reducing the thickness and thickness of the trailing edge when forming the blades of the blower.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram generally showing a blowing system installed in a subterranean port of the present invention;
FIG. 2 is a block diagram showing a state in which the system of the present invention is utilized;
FIG. 3 is a view illustrating the manner in which the blower and the silencer hang on the ceiling of the present invention,
4 is a detailed view showing a state where the ventilation system of the present invention is installed in an underground sphere,
FIG. 5A is a view showing a state in which the dust-proof tube of the present invention, the blower and the silencer are combined,
FIG. 5B is a view showing a state in which the dustproof tube of the present invention, the blower and the salt are combined,
6 is a front view showing a state of the blade of the blower of the present invention,
7 is a detailed view of the blower blade of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation system for supplying cold air in a natural purification mode for cooling heat generated in an underground sphere.

Therefore, the construction of the present invention and its operation will be described in detail with reference to Figs.

That is, a ventilation tunnel 20a exists between the underground hole 10 and the grating 12 formed on the ground for ventilation in the underground hole 10, and is installed at one end of the ventilation tunnel 20a And a blower 20 having an inverter motor 21 for sucking and discharging the air on the side of the underground pipe 10 to the grating 12 serving as an external ventilation hole. The blower 20 is mounted on the rear of the blower 20, And a silencer 30 for reducing the noise generated in the motor 21. There is also a temperature sensor 31 for detecting the room temperature, which is installed in the inside of the underground sphere 10 at a predetermined interval. The temperature sensor 31 is installed inside or outside the underground sphere 10, And an operation panel 32 for performing the operation. Accordingly, the above-described configurations combine to maintain the ventilation inside the underground opening 10 and the cooling of the air to improve the durability of the facility.

Nowadays, it is a tendency to expand the utilization space on the ground by installing various kinds of traffic convenience facilities through the tunnels underground, or by wiring the cables buried underground. The passengers who had to travel by bus from the ground were laid on top of each other by the subway, and the cable that supplied power to the city by laying the cable to the upper part through the steel tower was also buried in the underground tunnel. ought. In addition, the Internet line as well as various communication lines are under way to be buried in the underground in a direction that does not harm the aesthetic of the city on the ground. This progress goes beyond merely considering the beauty of the city, Is recommended.

However, the use of an excellent alternative underground 10 to maintain security and enhance the aesthetics of the city also reveals the following problems. That is, a cable is laid in the underground hole 10, and a power line and various electric devices are buried, and heat is generated, and the underground is being heated up. This is a considerable problem, especially when the underground 10 is managed with natural circulation without air purification or forced air purification, the continuous purpose of the cable can not be achieved due to the continuous increase in temperature A situation occurs. The efficiency and durability of the power transmission are seriously reduced, frequent cable replacement must be made, and more seriously, the durability of the underground sphere 10 may be reduced to cause damage or breakdown. As a result, in order to solve such a problem, the present invention provides a separate ventilation system for discharging hot air from the underground sump 10 to the ground.

The underground sphere 10 referred to in the present invention refers to all kinds of tunnels such as tunnels formed for wiring various cables and lines as well as tunnels for subway. A common point of the underground holes 10 is a straight hole 15 for communicating with the ground at a certain point. That is, the underground (10), which is arranged in various forms in the underground, is used for communication of air or for the entrance and exit of the mechanical equipment for forming the underground hole (10) Is formed. In the case of the subway, each history also plays the role of the dagger (15). However, in the case of the underground portal (10) having only the cable or the line, the dagger (15) is formed at a constant interval. For example, a water jet opening 15 is formed at a distance of about 200 m to 400 m to allow communication with the ground. As shown in FIG. 1, a safety device is provided at the upper end of the water jet opening 15 to allow air communication while using the grating 12 for the safety of people who fall from the ground to the ground.

As shown in FIG. 1, the present invention is installed in a separate ventilation tunnel 20a communicating with a vertical hole 15 formed at the lower end of the grating 12 and an underground hole 10. When the heat generated in the underground sphere 10 is sucked and discharged to the outside, as much as the discharged air is introduced through the batting fastener 15, natural air purification is achieved by itself. That is, if the ventilation system of the present invention is installed in the ventilation tunnel 20a formed at the lower end of one of the vertical guides 15 if the vertical port 15 is formed at intervals of 400 m, It is a passage. Such an air blowing system is implemented through an inverter motor 21, and a separate muffler 30 is mounted for minimizing noise. The blower 20 is always operated so that it can be controlled by the operation panel 32, but also can be controlled through the temperature sensor 31 mounted inside the tunnel.

Referring to FIG. 2, when the temperature of the inside of the underground opening 10 is higher than the reference temperature, the temperature sensor 31 senses it and notifies the control unit (not shown). The control unit may be controlled by an operation panel 32 provided inside or outside the underground sphere 10, or may separately generate its own control signal. When the operation panel 32 is not controlled, the inverter motor 21 is operated with the temperature sensed by the temperature sensor 31 at or above the reference temperature as a signal to rotate the blower 20. As a result of this rotation, the heat inside the underground sphere 10 escapes to the outside through the vertical hole 15 and new air flows through another vertical hole 15 to fill the underground sphere 10.

On the other hand, when the controller 20 determines that the environment of the inspection or the blower 20 is in operation even if the manager is below the reference temperature, the blower 20 is operated in the operating panel 32 to open the blower 20 To the outside. One embodiment of the application of the present invention will be described. The blower 20 of the present invention is fastened to a ventilation tunnel 20a which communicates with a plurality of vertical nozzles 15 as shown in FIG. If the blower 20 of the present invention is reversely rotated in the opposite direction as needed, the outside air may be sucked into the underground opening 10. Of course, in order to vigorously maintain such action, the air blower 20 formed in the next underground opening 10 rotates the blower 20 in the normal direction to discharge the air inside the underground opening 10 to the outside, Can be easily maintained.

Hereinafter, more detailed embodiments of the ventilation system of the present invention will be described.

3, the blower 20 of the present invention is coupled to the muffler 30 through a flange connection, and an eye bolt 22 is fixed to an upper portion of the ventilation tunnel 20a, The supporting frame 25 fixed to the lower end of the outer circumferential surface of the blower 20 is provided with a separate dustproofing member 23 for fixing the hanger 23 protruding from the upper end thereof, The elastic body 26 is fixed to cancel the vibration and to prevent noise from being generated.

That is, the blowing system of the present invention is an air blower 20 for minimizing noise by extracting the inner heat of the underground opening 10 to the outside by using the turning force of the blade 40. In order to flange the muffler 30 to the rear of the blower 20 to which the blade 40 is fixed, the coupling operation must be easy. To this end, the blower 20 of the present invention joins the hanger 23 to the outer circumferential surface of the casing 20 of the blower 20 as described above, and the medallion is then firmly flanged on the ceiling. A wire 24 such as a chain block or a mechanism capable of adjusting the length of the chain is used to connect the eyebolt 22 of the ceiling and the hanger 23 fastened to the outer circumferential surface of the blower 20 casing Hanging the deferral deck, achieving precise connection and coupling between the flanges.

That is, the vibration transmitted from the blower 20 may generate a lot of noise. To prevent this, the eyebolt 22 is fixed to the ceiling, and a hanger 23 is attached to the outer surface of the casing of the muffler 20 Thereby joining the wire 24. In the case of the chain block, it is easy to adjust the length of the blower 20 in a state where the blower 20 is heavy in a state of being suspended from the ceiling, so that it is easy to secure the position of the blower 20. After the position of the blower 20 is completely secured, the muffler 20 is flanged to complete the blowing system.

In the case of the present invention, since the medal silencer 30 and the blower 20 are flange-assembled to the ceiling as described above, they can be fastened to the ventilation tunnel 20a in a completed form, It is easy to put it into the tunnel 20a and assemble it.

The casing can be more easily fastened if a separate keyway (not shown) is formed in the casing so as to be able to accurately determine its position. The flange-coupled blower 20 allows the corresponding corresponding flange portion 34 to be easily found through the keyway in the medal state on the ceiling, thereby facilitating the fastening.

Further, in order to significantly reduce the vibration transmitted from the blower 20 of the present invention or the noise thereof, a support frame 25 is formed at the lower end of the blower 20, and the support frame 25 is not directly contacted with the ground So that vibration can be absorbed through the separate elastic body 26. The elastic body 26 is an elastic spring or a material having high elasticity such as rubber is inserted to support the support frame 25. Various types of elastic bodies 26 may be applied to induce generation of less noise.

As a result, the ventilation system of the present invention easily releases the heat of the underground opening 10 to the outside, and significantly reduces the generation of noise, thereby providing a comfortable underground space environment. Meanwhile, the blower 20 of the present invention is convenient to use because the dustproof device, the silencer 30, and the automatic control device according to the power supply are integrally fastened as in the embodiment of the present invention.

Noise generated in the blower 20 is significantly reduced through the supporting frame 25 having the dustproof function, the vibration isolator 36 and the silencer 30 and the operation of the blower 20 is performed through the operation panel 32 Or automatically controlled so that the power supply can be automatically adjusted. More specifically, the blower 20 can be operated through a control signal generated by a worker at a remote control panel 32 by an air blowing system that can reduce energy because the inverter motor can be operated in a partial load manner. And the operation can be automatically controlled through the control unit or the controller installed in the system so that the adaptive power according to the situation can be improved.

For example, if the inspector enters the underground passage 10 or the ventilation tunnel 20a, the ventilation system is automatically operated, and the work environment of the operator can be guided smoothly. An operator arriving at the ventilation tunnel 20a can observe the operating state of the ventilation system without operating a separate controller. If a situation requiring operation or maintenance occurs, the controller is controlled to stop the ventilation system, The function can be checked.

The present invention also has a separate facility for significantly reducing additional noise, which is illustrated in detail in the illustrated FIG. That is, in the flange coupling between the blower 20 and the muffler 30, the corresponding flange portion 34 corresponding to the flange portion 33 of the blower 20 is provided, and the flange portion 33 of the muffler 30 And the blower 20 and the silencer 30 are connected to each other via the vibration-damping pipe 36 having the communicating pipe portion 35 at the central portion thereof.

The silencer 30 and the blower 20 are flange-coupled to each other. In the case of the blower 20, the ceiling fan 22 is assembled and fastened to the ceiling, Method. At this time, when the muffler 30 and the blower 20 are fastened through the coupling between the high-hardness metal materials, when the blades 40 of the blower 20 are rotated, they are shaken together and noise and vibration are likely to increase. In order to eliminate such a concern, in the present invention, a separate intermediate means is used for connecting the silencer 30 and the blower 20. That is, the blower 20 and the silencer 30 are connected to each other through a vibration-proof pipe 36 made of a non-metal material rather than a synthetic resin or a rubber material. In the case of the dustproof pipe 36, a corresponding flange portion 34 such as the flange portion 33 formed on the blower 20 and the silencer 30 is formed. Therefore, the flange portion 33 and the corresponding flange portion 34 are flange-joined.

The vibration-proof pipe 36 absorbs the vibration and transmits the vibration to the silencer 30 because the vibration-proof pipe 36 is a non-metallic material (= rubber or synthetic resin material). In addition, even when weak vibration or noise is transmitted to the silencer 30, the silencer 30 does not emit noises or vibrations to the outside due to its noise-preventing function.

In the present invention, the anti-vibration tube 36 has a circular corresponding flange portion 34 on one side and a corresponding flange portion 34 on the other side, and the communicating tube portion 35 has a shape of a corrugated tube 35-1 So that the length can be interlocked. That is, as shown in FIG. 5 (b), a quadrangular corresponding flange portion 34 is formed on one side and a dust-proof pipe 36 on the other side is formed with a circular corresponding flange portion 34, (30) and the blower (20). In many cases, the silencer 30 is manufactured in the form of a quadrangle. In the case of the blower 20, since the rotary motion is performed, the muffler 30 has a generally circular housing (= casing). In order to flange-bond them, a separate dustproof tube 36 is required. On the other side as shown in FIG. 5 (b), the dustproof tube 36 having the corresponding flange portion 34 having a circular shape is required. In addition, in the case of the anti-vibration tube 36, the communicating pipe portion 35 is formed in the form of a bellows pipe 35-1 which can be extended and reduced in length to some extent to improve the ability to cope with the installation environment. The blower 20 and the silencer 30 are connected to each other through the vibration-proof pipe 36. When the distance is not proper, the length of the bellows pipe 35-1 is reduced and extended, . Of course, as shown in FIG. 5A, it is possible to use a dust-proofing tube having a circular shape on one side.

The flange portion 33 and the corresponding flange portion 34 of the present invention are provided with a bar body 72 in the form of a cross section of a "C" shape for covering and covering the flange portion 33 and the corresponding flange portion 34, There is a gap bar 70 made of a fastening hole 73 that penetrates the bar body 72 at a predetermined interval in the horizontal direction and is made of rubber or synthetic resin material that is inserted into the fastening hole 73 to induce fastening It is most preferable that the dust-tightening bolt 76 is made of the other end inserting tip 78 and the dust-tightening bolt 76 is used.

8, the vibration-proof pipe 36 is formed of a non-metallic material, that is, a synthetic resin or a rubber material. In the case of the blower 20 or the silencer 30, The housing in which the support portion 33 is formed is often made of a metal material. When they are fastened using bolts of metal, vibration may be transmitted to both of them due to the sense of heterogeneity, and durability is likely to be weakened. In order to solve this problem, the two flange portions 33 and the corresponding flange portions 34 are held at both ends of the left and right ends by using the interval bar 70, and the fastening is completed by a method of tightly fastening the flange portions 34 using the separate vibration- do.

That is, the spacing bar 70 is formed in such a manner that a fastening hole 73 is formed in the bar body 72 having a "C" shape in section. The flange portion 33 and the corresponding flange portion 34 are overlapped and inserted into the gap 71 formed in the bar body 72 and the fastening bolt 76 is inserted into the fastening hole 73 to complete the fastening. The fastening hole 73 is formed at a position corresponding to the bolt hole formed in the flange portion 33 and the corresponding flange portion 34. When the vibration proof bolt 76 passes through the fastening hole 73 and is inserted, And the corresponding flange portion 34 are firmly fastened by the spacing bar 70. A vibration 77 is formed by integrally forming the head 77 and the insertion tip 78 at the end of the vibration bolt 76. The vibration bolt 76 is made of a synthetic resin or a rubber material so as to prevent noise generated by the vibration bolt 76 The insertion tip 78 is easily inserted but the insertion tip 78 of the arrowhead shape is caught by the inner peripheral surface of the fastening hole 73 of the bar body 72, Of course, in order to dismantle the blower 30 and the silencer 20, the vibration-proof bolt 76 is pressed to release the fastening force by collapsing the shape of the dust-proof bolt 76 in a collapsed state.

The spacing bar 70 maintains a straight or cut circular shape depending on the shape of the flange portion 33 and the corresponding flange portion 34. The illustrated flange portion 33 and corresponding flange portion 34 in Fig. 8 have a quadrangular shape. For such flange engagement, the spacer bar 70 of the present invention should be fitted with a straight spacer bar 70 as shown in FIG. However, if the flange portion 33 or the corresponding flange portion 34 has a circular shape, the interval bar 70 holding the cut circular body shape having the same curved surface must be fastened. A bar body 72 having the same radius of curvature is used to cover the shape of the flange portion 33 and the corresponding flange portion 34. [

In the present invention, as described above, an injector AB for injecting water to the inside of the underground sump 10 to cool the air is installed to prevent the secondary air inside the underground sump from being heated. The injection device AB is formed on one side of the underground sphere 10, and is installed in a place where communication is favorable as shown in Fig. As shown in FIG. 1, the spraying apparatus AB of the present invention is mounted on one side of an underground hole 10 horizontally penetrating underground. In the underground tunnel 10 formed horizontally in the ground, a ventilation tunnel 20a for communicating with the ground is provided at a predetermined interval. In the present invention, a ventilator 20 is installed at one side of the ventilation tunnel 20a And the heated air inside the underground sphere 10 is being drained. At this time, in case of the adjacent ventilation tunnel 20a adjacent to the ventilation tunnel 20a, an amount of fresh fresh air is introduced. At this time, in the underground hole 10 of the present invention, only the blowing action of the blower 20 causes a situation in which the heated air inside the underground hole 10 is hard to be dropped. That is, when the power load on the power transmission line inside the underground sphere 10 is increased, the heat generation is increased. In summer where the temperature environment on the outside ground is too hot, the temperature of the air sucked is high, There are times when it is not enough to drop. In order to solve such a problem, according to the present invention, an injection device AB is formed on one side of the underground sphere 10 to spray water into the air to lower the temperature of the air, Thereby reducing the overall temperature of the inside of the underground opening 10. Air flows from the ground through the air tunnel 20a at one side and air is blown out through the air blower 20 at the ventilation tunnel 20a at the other side so that a constant air flow is generated inside the underground hole 10, If the jetting device AB is installed in the middle of the flow of the air or in a direction deviated in any direction, the water particles lower the temperature of the air inside the underground hole 10, achieving the object of the present invention. In the present invention, the effect of reducing the temperature of the inside of the underground opening 10 through the blower 20 of the ventilation tunnel 20a is firstly reduced, and the injection device AB The temperature inside the underground passage 10 is lowered.

In addition, the injection device AB can be automatically sprayed through the detection of a separate temperature sensor 31 installed in the underground passage 10 of the present invention, so that it can be more efficiently managed. Further, in order to further revive this object, the present invention has found another supplementary means. That is, the spray water supplied to the spray device AB uses cooling water supplied through a separate cooling cycle AD. It is preferable that the water sprayed from the underground sphere 10 is sprayed using ground water. It is spraying wasted groundwater. However, if this groundwater is insufficient, it can be used by using separate tap water. The use of groundwater is advantageous in terms of resource utilization and air cooling effect because it is advantageous to cool the air to spray lower temperature water.

However, in the present invention, it is also possible to use the cooling water having passed through a separate cooling cycle (AD) as shown in FIGS. 1 and 9. The cooling cycle (AD) applied to the ventilation system of the present invention alone or the cooling water of another cooling cycle (AD) can be drawn and used. If the temperature is seriously increased, the temperature sensor 31 of the underground sphere 10 senses the temperature, and the cooling cycle AD is activated to cool the tap water or ground water through the cooling cycle AD And then injects the air into the underground hole 10 through the injector AB again. The injected cooling water serves to lower the temperature of the air inside the underground opening 10 at a higher speed and improve the durability of the underground opening 10 as well as the cable itself. The ventilation tunnel 20a and the underground hole 10 of the present invention lower the temperature of the inside of the underground hole 10 primarily through the blower 20 and are installed in the underground hole 10 The temperature is lowered through the injection device (AB), and the effect is increased by injecting cooling water in the third place.

In the present invention, as shown in FIG. 4, it is preferable that the duct 40a is connected to the rear of the muffler 30 so as to communicate with the grating 12 on the ground so that the high-temperature air in the ground is extracted to the outside. A separate duct 40a is formed for the inflow and outflow of air to form a flow of air that escapes to a certain region. In the case of the straight nozzle 15 and the ventilation tunnel 20a, there is a possibility that the size of the diameter may be changed according to the working environment. When the diameter is changed, there is a possibility that the inner flow velocity and the pressure are different. Therefore, It is difficult. The present invention aims at facilitating control by easily estimating the amount of heat released from the ventilation system.

In the meantime, in the present invention, productivity of the blower of the present invention is improved, and noise generated in the ventilation system is minimized. That is, the blade 40 of the blower 20 is formed such that the tip portion 41 is wider than the hub side 42 to increase the productivity, and the thickness of the blade 40 is smoothly reduced without a bent portion The rear surface (A) is formed to minimize the generation of noise.

6 and 7, the blade 40 of the blower 20 is divided into a tip portion 41 and a hub side 42 portion. The tip portion 41 refers to a portion that pivots close to the inner circumferential surface of the housing, and the hub side 42 refers to a portion that is engaged with the pivot axis of the blower 20. In the present invention, the width of the tip portion 41 side is wider than that of the hub side portion 42. The blades 40 are typically made of aluminum material through die casting, in which a majority of all the blades 40 are die cast on the hub side for ease of this die casting. However, the blade 40 of the present invention forms the tip portion 41 in a wider form to improve the yield of the blade produced by die casting.

Also, in forming the cross section of the blade 40 as shown in the drawing, the rear surface portion A of the blade 40 is smoothly reduced in thickness without a bent portion, thereby minimizing generation of noise. This has been verified by a number of experiments and simulations by the applicant of the present invention, which table is shown below and attached.

Table 1

Velocity distribution at 20% span location

Table 2

Velocity distribution at 60% span location

Table 3

Velocity distribution at 90% span location

As modeled in the above table, the blade of the axial flow fan of the present invention can determine whether or not the precise noise is generated by examining how the flow characteristics are exhibited along the cross section of the blade since the cross sections of the tip portion and the imaginary portion are not constant . The cross section in the table shows that the blades in the hand side portion are 0% and the flow is observed at 20%, 60%, 90%.

All of the above diagrams show cross-section of the percent span length effect of the blades. In general, the velocity of the upper side of the blade shows a faster flow than that of the lower side, and a vortex occurs at the trailing edge of the severely curved blade. Therefore, the blade of the present invention is formed in such a manner that the trailing edge portion is smoothly reduced in thickness.

Also, as the blade percent span length increases, the angle of incidence of the air changes, which is one reason why the blade geometry itself is twisted, but the larger the percent span length, the less the effect on airflow from the smaller percentage span length It informs.

10; Underground Section 20; air blower
21; Motor 30; silencer
31; A temperature sensor 32; Operator panel
33; A flange portion 34; Corresponding flange section
35; A communicating tube portion 36; Anti-vibration tube

Claims (10)

A ventilation tunnel 20a existing between the underground hole 10 and the grating 12 formed on the ground for ventilation to the underground hole 10;
A blower 20 installed at one end of the ventilation tunnel 20a and equipped with an inverter motor 21 for sucking and discharging the air on the side of the underground opening 10 to the grating 12 as an external ventilation hole;
A muffler 30 installed at the rear of the blower 20 to reduce noise generated from the blower 20 and the motor 21;
A temperature sensor (31) for sensing the room temperature, the temperature sensor (31) being mounted in the interior of the underground sphere (10) at a predetermined interval;
And an operation panel 32 installed inside or outside of the underground passage 10 to operate and control the blower 20 so as to maintain the ventilation inside the underground passage 10 and the cooling of the air, Thereby improving durability.
The method according to claim 1,
The blower 20,
The muffler 30 is fastened to the muffler 30 through a flange connection so that the eyebolt 22 is fixed to the upper portion of the ventilation tunnel 20a and the hanger 23 protruding from the upper end of the outer circumference of the blower 20 is fastened. Allowing the medal through the wire (24) or chain when mounted;
Wherein the support frame (25) fixed to the lower end of the outer circumferential surface of the blower (20) is fixed with an elastic body (26) for vibration damping to cancel vibration and prevent noise from occurring.
3. The method of claim 2,
In the flange coupling of the blower 20 and the muffler 30, the corresponding flange portion 34 corresponding to the flange portion 33 of the blower 20 is provided and the other flange portion 34 is provided at the other end to correspond to the flange portion 33 of the muffler 30 (20) and a silencer (30) via a vibration-damping pipe (36) composed of a communicating pipe portion (35) at the center of the ventilator .
In the third aspect,
The dustproof pipe 36 has a circular corresponding flange portion 34 on one side and a corresponding flange portion 34 on the other side and the communicating pipe portion 35 is formed in the form of a corrugated pipe 35-1, The length of which can be interlocked.
4. The method according to claim 3 or 4,
The flange portion (33) and the corresponding flange portion (34)
Shaped bar body 72 that covers the flange portion 33 and the corresponding flange portion 34 so as to cover the flange portion 33 and the cover portion 72. The fastening hole 73 penetrates the bar body 72 at a predetermined interval in the horizontal direction, (70);
And the dustproof bolts 76 made of rubber or synthetic resin material inserted into the fastening holes 73 and guiding the fastening holes 73 and the insertion tips 78 at the other end are used. system.
6. The method of claim 5,
Wherein the interval bar (70) maintains a straight or cut circular shape depending on the shape of the flange (33) and the corresponding flange (34).
The method according to claim 1,
And an injector (AB) for injecting water to cool the air inside the underground hole (10) is incorporated.
8. The method of claim 7,
Wherein the spray water supplied to the spray device (AB) is cooling water supplied through a separate cooling cycle (AD).
The method according to claim 1,
And the duct (40a) is connected to the rear of the silencer (30) to communicate with the grating (12) on the ground to extract the high temperature air from the underground to the outside.
3. The method of claim 2,
The blade 40 of the blower 20 is formed such that the tip portion 41 is wider than the hub side 42 and the trailing portion of the blade 40 is provided with a rear surface A that is smoothly reduced in thickness, So that the ease of manufacture and the generation of noise are minimized.

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