KR102498880B1 - Hot air ventilation system - Google Patents

Abstract

The present invention is characterized by comprising: a case with an inlet and an outlet; an air blowing fan rotationally installed at the case, and allowing the air to be introduced by means of the inlet to be discharged through the outlet; a driving shaft supporting the air blowing fan, and extended from the center of rotation of the air blowing fan to the outside of the case; a plurality of bearings which rotationally support the driving shaft; a first heat radiating unit which disperses heat in various outward directions from the case such that the heat transferred from the case may come in contact with the external air; and a second heat radiating unit which pumps the air outside the case towards the bearings to provide the external air flow in which the external air flows while coming in contact with the bearings. Therefore, the bearings may be effectively prevented from being deformed or broken.

Description

Blower device for hot air discharge {Hot air ventilation system}

The present invention relates to a blower for discharging hot air, and more particularly, to a blower for discharging hot air of about 200 to 400° C. from a workplace to the outside, wherein a bearing supporting a drive shaft is deformed by the hot air during a hot air discharge operation. The present invention relates to a blower device for discharging hot air, which can effectively prevent bearings from being deformed or damaged while heat dissipation is performed secondarily by the first heat dissipation unit and the second heat dissipation unit.

In general, in various workplaces with poor ventilation, fresh air from the outside must be injected while expelling the contaminated air inside the workplace for the safety of workers.

Here, various workshops refer to tank interior work of a land structure, tank interior work of a ship, underground construction work, various manhole work, or large factories such as chemical plants.

In particular, since the danger of gas suffocation or gas explosion always emerges in internal operations such as ships and chemical plants, it is necessary to make sure that workers' safety is ensured. Due to the high risk of gas explosion, it is desirable not to use it for tank work where gas is generated, but there is no reasonable means to replace it. am.

Or, the risk of electric shock rises due to the high possibility of electric leakage, and the safety accident rate due to this is not low.

Ventilation apparatus according to the prior art developed to solve the above problems, the bottom surface is open, the interior is partitioned into an upper space and a lower space, a case having first openings formed along the side surface, and inserted through the case, , Including a pipe connected to an external air supply line and formed with nozzles for injecting air into the case, and a non-powered air flow diffusion member installed on the pipe so that the air injected through the nozzles collides and swirls to spread through the first openings. do.

The background art of the present invention is disclosed in Republic of Korea Patent Registration No. 10-1467900 (Announcement on December 03, 2014, title of invention: Enclosed Area Ventilator).

A ventilation device according to the prior art, when applied to a workplace where high-temperature air of 200° C. or higher must be discharged, is heated by high-temperature hot air passing through the ventilation device. There are problems that can be deformed or damaged.

Therefore, there is a need to improve this.

The present invention is a blower device for discharging hot air at a temperature of about 200 to 400° C. from a workplace to the outside, and prevents bearings supporting a drive shaft from being deformed or damaged by hot air during a hot air discharge operation. An object of the present invention is to provide a blower for discharging hot air that can effectively prevent bearings from being deformed or damaged while performing a second heat dissipation action by a heat dissipating unit.

The present invention, a case provided with an inlet and a discharge port; a blowing fan rotatably installed in the case, introducing air through the inlet and discharging air through the outlet; a driving shaft supporting the blowing fan and extending from a rotational center of the blowing fan to an outside of the case; a plurality of bearings rotatably supporting the driving shaft; a first heat dissipation unit distributing heat from the case in various directions to the outside so that the heat transferred from the case can be brought into contact with external air; and a second heat dissipation unit configured to provide an external air flow in which external air flows while being in contact with the bearing by forcing air outside the case toward the bearing.

In addition, the case of the present invention is installed on a vertical frame extending in a vertical direction from a base installed on the ground, and the drive shaft is rotatably installed by the bearing on a horizontal frame extending from the vertical frame, and on the base It is characterized in that the power of the installed drive motor is transmitted to the drive shaft by the power transmission unit.

In addition, the first heat dissipation unit of the present invention, a plurality of support shafts extending from the safety cover provided between the case and the vertical frame; a frame member supported by a plurality of the support shafts; and a mesh net installed on the frame member, contacting air outside the case, and discharging heat conducted along the support shaft and the frame member to outside air.

In addition, the second heat dissipation unit of the present invention may include a first cooling fan installed on the drive shaft and disposed to face one of the plurality of bearings; and a second cooling fan installed on the drive shaft and disposed to face the other one of the plurality of bearings.

In addition, the present invention is characterized in that it further comprises a fluid supply unit for supplying a cooling fluid to the first heat dissipation unit or the second heat dissipation unit.

The blower for discharging hot air according to the present invention, when the case is overheated by the hot air passing through the case, the first heat dissipation that prevents the heat conducted from the overheated case from being concentrated on the drive shaft while bringing the heat conducted from the case into contact with the outside air. Since the portion is provided, there is an advantage in that it is possible to prevent heat from being intensively transferred to the drive shaft and the bearing, thereby preventing the bearing from being deformed or damaged by heat transferred from the case.

In addition, since the blower for discharging hot air according to the present invention is provided with a second heat dissipation unit for dissipating the heat of the case transferred to the bearing by providing a flow path for supplying external air of the case to the bearing side, separate external air passing through the bearing is provided. There is an advantage of more effectively preventing the bearing from being overheated by the heat transferred from the case by the.

1 is a configuration diagram showing a blower for discharging hot air according to an embodiment of the present invention.
2 is a view showing a first heat dissipation unit of a blower for discharging hot air according to an embodiment of the present invention.
3 is a view showing a first heat dissipation unit and a driving motor of a blower for discharging hot air according to an embodiment of the present invention.
4 is a view showing a second heat dissipation unit of a blower for discharging hot air according to an embodiment of the present invention.

Hereinafter, an embodiment of a blower for discharging hot air according to the present invention will be described with reference to the accompanying drawings.

In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator.

Therefore, definitions of these terms will have to be made based on the content throughout this specification.

1 is a configuration diagram showing a blower for discharging hot air according to an embodiment of the present invention, and FIG. 2 is a diagram showing a first heat dissipation unit of the blower for discharging hot air according to an embodiment of the present invention. 3 is a view showing a first heat dissipation unit and a drive motor of a blower for discharging hot air according to an embodiment of the present invention, and FIG. 4 is a second heat dissipation unit of a blower for discharging hot air according to an embodiment of the present invention. It is a drawing shown.

1 to 4, a blower for discharging hot air according to an embodiment of the present invention is rotatably installed in a case 12 provided with an inlet and an outlet, and the case 12, and passes through the inlet. A blowing fan 10 for introducing air and discharging it through an outlet, a driving shaft 32 supporting the blowing fan 10 and extending from the rotation center of the blowing fan 10 to the outside of the case 12, and a driving shaft 32 A plurality of bearings rotatably supporting the ), and a first heat dissipation unit 70 that dissipates heat from the case 12 in various directions to the outside so that the heat transferred from the case 12 can be brought into contact with external air; The case 12 includes a second heat dissipation unit 80 that pressurizes air from the outside toward the bearing and provides a flow of external air flowing while the external air comes into contact with the bearing.

Therefore, when the high-temperature hot air of 200 ~ 400 ℃ is discharged from the workplace to the outside, if the inlet of the case 12 of this embodiment is installed opposite to the workplace and the blowing fan 10 is driven, the air inside the work is sucked into the case ( 12) After passing through, it is discharged to the outside of the worker.

At this time, when the case 12 is overheated by the high-temperature hot air passing through the case 12, heat is conducted along the drive shaft 32 extending outside the case 12, and the bearing may be overheated. , The action of the first heat dissipation unit 70 and the second heat dissipation unit 80 prevents heat from being concentrated on the drive shaft 32 and the bearing, thereby preventing deformation or damage of the bearing, thereby shortening the bearing replacement cycle. It is possible to significantly increase, and it is possible to reduce the time and cost required for maintenance of the blower.

The case 12 of this embodiment is installed on a vertical frame 14 extending vertically from a base 18 installed on the ground, and the drive shaft 32 is installed on a horizontal frame 16 extending from the vertical frame 14 It is rotatably installed by bearings, and the power of the drive motor 30 installed on the base 18 is transmitted to the drive shaft 32 by the power transmission unit 34.

Here, since the inlet of the case 12 is formed on one side, if the inlet of the case 12 is connected to the exhaust port provided on one side of the workplace, the air inside the operator can be discharged to the outside through the case 12. there will be

Since the discharge port is formed on the upper surface of the case 12, the high-temperature hot air flowing into one side of the case 12 is moved upward around the circular case 12 and is discharged to the outside along the exhaust pipe connected to the discharge port.

A safety cover 90 is provided between the case 12 and the vertical frame 14 to connect the case 12 and the vertical frame 14 while reducing the contact area between the case 12 and the vertical frame 14. , The safety cover portion 90 includes a connection frame 92 installed to support the case 12, a plurality of connection shafts 94 extending from the connection frame 92 and connected to the vertical frame 14, , It includes a safety net 96 that prevents the drive shaft 32 from being exposed by closing the hole formed on the side of the connection frame 92.

As described above, since the connecting frame 92 and the vertical frame 14 are connected by a plurality of connecting shafts 94, the contact between the connecting frame 92 and the vertical frame 14 integrally formed with the case 12 Since the connection frame 92 and the case 12 are supported while minimizing the area, conduction of heat from the overheated case 12 to the vertical frame 14 is suppressed.

In addition, the first heat dissipation unit 70 of this embodiment includes a plurality of support shafts 72 extending from the safety cover unit 90 provided between the case 12 and the vertical frame 14, and a plurality of support shafts. The frame member 74 supported by the frame member 72 and the heat conducted along the support shaft 72 and the frame member 74 while being in contact with the air outside the case 12 installed on the frame member 74 It includes a mesh 76 for discharging to the outside air.

Therefore, when the heat conducted from the case 12 through the connection frame 92 and the connection shaft 94 is transferred to the vertical frame 14, the support shaft 72, the frame member 74 and the mesh from the vertical frame 14 The heat is dissipated to the outside as it is conducted to the net 76 and contacted with external air, so that the heat conducted from the case 12 to the bearing through the drive shaft 32 can be dispersed.

Accordingly, deformation or damage of the bearing due to heat conducted from the blowing fan 10 and the case 12 along the drive shaft 32 can be suppressed.

The second heat dissipation unit 80 of this embodiment is installed on the drive shaft 32, and is installed on the first cooling fan 82 and the drive shaft 32 disposed to face any one of a plurality of bearings, and a second cooling fan 84 disposed to face the other one of the plurality of bearings.

The bearing of this embodiment includes a first bearing 52 and a second bearing 54 disposed on the horizontal frame 16 at intervals and installed to support the drive shaft 32 at the same time. The cooling fan 82 and the second cooling fan 84 are installed on the driving shaft 32 and are disposed to face the first bearing 52 and the second bearing 54, respectively.

Therefore, when the driving shaft 32 and the blowing fan 10 are rotated by the power transmitted from the driving motor 30, the first cooling fan 82 and the second cooling fan 84 installed on the driving shaft 32 are rotated. While supplying external air to the first bearing 52 and the second bearing 54, the heat transmitted along the driving shaft 32 is dissipated through the external air.

Therefore, even if the heat transferred from the high-temperature hot air passing through the case 12 is conducted along the drive shaft 32, it is not conducted to the first bearing 52 and the second bearing 54, and is dissipated into the outside air, so that the first bearing (52) and the second bearing (54) to prevent deformation or damage.

In addition, the present embodiment may further include a fluid supply unit for supplying cooling fluid to the first heat dissipation unit 70 or the second heat dissipation unit 80, and the fluid supply unit supplies the fluid along the frame member 74. It may include a circulation passage formed in the frame member 74 so as to be circulated, and a refrigeration cycle for recovering and discharging heat from the refrigerant recovered through the circulation passage.

Therefore, when the refrigerant maintaining the low-temperature and low-pressure state by the operation of the compressor, the condenser, and the expansion valve constituting the refrigeration cycle is supplied to the frame member 74 along the circulation path, it flows along the mesh network 76 connected to the frame member 74. The supplied heat is absorbed and returned to the compressor side along the circulating flow path so that the heat can be discharged.

Of course, a fluid composed of cold water may be supplied to the circulation passage formed in the frame member 74, and a heat dissipation operation may be performed by absorbing heat and discharging the recovered refrigerant without a separate compressor, condenser, and expansion valve.

In addition, in this embodiment, power is supplied from the drive motor 30 installed on the base 18, and the drive motor is provided by the power transmission unit 34 installed between the drive motor 30 and the drive shaft 32 ( The power of 30) is transmitted to the driving shaft 32, so that the rotational movement of the blowing fan is made.

The power transmission unit 34 of this embodiment includes a main pulley 36 installed on the output shaft of the drive motor 30, a driven pulley 37 installed on the drive shaft 32, the main pulley 36 and the driven pulley It is installed around the belt member 38 that transmits power by connecting the 37, the main pulley 36, the driven pulley 37, and the belt member 38 to prevent safety accidents that occur when the operator's body comes into contact. It includes a cover member 39 to prevent.

Therefore, when power is supplied to the driving motor 30, the driving pulley installed on the output shaft of the driving motor 30 is rotated, and the power of the driving pulley 36 transmitted by the belt member 38 is driven by the driven pulley 37 and It is transmitted to the drive shaft 32 to achieve rotation of the blowing fan.

This is a blower device for discharging hot air of about 200 to 400°C from the workplace to the outside, and prevents the bearing supporting the drive shaft from being deformed or damaged by the hot air during the hot air discharge operation, and the first heat dissipation unit and the second heat dissipation unit. It is possible to provide a blower for discharging hot air that can effectively prevent the bearing from being deformed or damaged while the heat dissipating action is performed secondarily by the unit.

Although the present invention has been described with reference to an embodiment shown in the drawings, this is merely exemplary, and those skilled in the art can make various modifications and equivalent other embodiments therefrom. will understand

In addition, although a blower device for discharging hot air has been described as an example, this is only exemplary, and the blower device of the present invention may be used for other products other than the blower device for discharging hot air.

Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10; Blowing fan 12: Case
14: vertical frame 16: horizontal frame
18: base 30: drive motor
32: drive shaft 34: power transmission unit
36: main pulley 37: driven pulley
38: belt member 39: cover member
52: first bearing 54: second bearing
70: first heat dissipation unit 72: support shaft
74: frame member 76: mesh net
80: second heat sink 82: first cooling fan
84: second cooling fan

Claims (5)

A case provided with an inlet and an outlet;
a blowing fan rotatably installed in the case, introducing air through the inlet and discharging air through the outlet;
a driving shaft supporting the blowing fan and extending from a rotational center of the blowing fan to an outside of the case;
a plurality of bearings rotatably supporting the driving shaft;
a first heat dissipation unit distributing heat from the case in various directions to the outside so that the heat transferred from the case can be brought into contact with external air; and
A second heat dissipation unit configured to pressurize air outside the case toward the bearing to provide an external air flow in which the external air flows while contacting the bearing;
The first heat dissipation unit,
a plurality of support shafts extending from a safety cover provided between the case and the vertical frame;
a frame member supported by a plurality of the support shafts; and
A mesh net installed on the frame member and contacting air outside the case and discharging heat conducted along the support shaft and the frame member to the outside air,
The safety cover part,
a connection frame installed to support the case;
a plurality of connecting shafts extending from the connecting frame and connected to the vertical frame; and
Since the hole formed on the side of the connection frame is closed to prevent the drive shaft from being exposed, and at the same time includes a safety net for dissipating heat conducted from the overheated case,
When heat conducted from the case through the connection frame and the connection shaft is transferred to the vertical frame, it is conducted from the vertical frame to the support shaft, the frame member, and the mesh network, and heat is dissipated to the outside as external air is contacted. A blower for discharging hot air, characterized in that it can disperse heat conducted from the case to the bearing through the drive shaft.
According to claim 1,
The case is installed on a vertical frame extending vertically from a base installed on the ground, the drive shaft is rotatably installed by the bearing on a horizontal frame extending from the vertical frame, and the drive motor installed on the base A blower for discharging hot air, characterized in that power is transmitted to the drive shaft by a power transmission unit.
delete The method of claim 1, wherein the second heat dissipation unit,
a first cooling fan installed on the drive shaft and disposed to face one of the plurality of bearings; and
A blower for discharging hot air, characterized in that it comprises a second cooling fan installed on the drive shaft and disposed to face the other one of the plurality of bearings.
The method of any one of claims 1, 2 and 4,
The blower for discharging hot air further comprising a fluid supply unit for supplying a cooling fluid to the first heat dissipation unit or the second heat dissipation unit.

Images