KR20180053858A - Local Ventilator with swirler - Google Patents

Abstract

According to the present invention, a local ventilator comprises an additional second flow path to apply a wind to a user in addition to a first flow path discharging contaminated air, and can alleviate heat generated when cooking through an air blowing fan installed in the second flow path. Moreover, according to the present invention, the local ventilator comprises an evaporation filter detachably installed in a thermoelectric module (TEM) mounted on any one surface of a covered auxiliary case or an inlet. Therefore, a cold wind can be generated.

Description

[0001] The present invention relates to a local ventilator with swirler,

BACKGROUND OF THE INVENTION Field of the Invention [0002] The present invention relates to a vortex-type local exhaust system for sucking contaminated air and discharging the polluted air to the outside, and more particularly, to a multifunctional local exhaust system having a function of cooling air,

In general, the local exhaust system is installed in a factory where a lot of pollutants are generated, a kitchen of a home and a restaurant, and is widely used for sucking contaminated air and discharging it to the outside.

Among the conventional local exhaust systems used for this purpose, a kitchen hood is used to exhaust air containing various pollutants in the kitchen of a home.

The kitchen hood uses an exhaust fan to remove contaminants in a certain space.

The exhaust fan uses the property of a gas moving from a high air pressure to a low air pressure. When the wing is rotated, the air is pushed out to lower the air density around the wing, and the air pressure is lowered. Then, the ambient air with relatively high air pressure moves to the wing. At this time, the air is sucked or discharged according to the warping direction of the wing.

In order to compensate for the suction capability through the exhaust fan, there is a swirler provided on the suction port side of the exhaust fan to form a vortex. The air flow created by the rotation of the swirler forms a vortex around the exhaust stream of contaminated air rising towards the inlet of the exhaust fan along the swirl center axis of the swirler. This vortex serves as an air curtain for blocking the area where the pollutant is generated from the surrounding area, thereby allowing the contaminated air to be sucked into the intake port of the exhaust fan more efficiently.

On the other hand, adjacent areas of the kitchen hood create a hot environment for the user due to the heat generated during the cooking process. It is difficult to create a pleasant kitchen environment by raising the temperature of the kitchen.

The conventional kitchen hood can cool the heat of the kitchen indirectly by exhausting the indoor air to the outside through the exhaust fan. However, it takes a long time to lower the temperature of the kitchen through ventilation or ventilation with outdoor air. Especially in summer, it is difficult to create an environment desired by the user.

For this reason, the user can install a separate air conditioner, air purifier, etc. in the kitchen for a pleasant cooking environment of the kitchen, but it is inefficient in terms of space utilization and additional costs may occur.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a local exhaust system capable of solving the user's feeling of heat due to heat generated during cooking.

It is another object of the present invention to provide a local exhaust system capable of appropriately managing the temperature of a kitchen which is increased due to heat generated during cooking.

It is still another object of the present invention to provide a local exhaust system for efficiently utilizing a swirl fan.

It is still another object of the present invention to provide a local exhaust system in which air volume and temperature are set according to a user's operation and air can be discharged into a room.

Another object of the present invention is to provide a local exhaust device that can provide cool wind to a user without being affected by physical condition or cooking posture.

It is still another object of the present invention to provide a local exhaust system capable of purifying air in a kitchen in which most of fine dust, vapor, and the like generated in a cooking process are most distributed.

The local exhaust system according to the present invention includes a first flow passage for exhausting polluted air as well as a second flow passage for applying wind to a user and a blowing fan installed in the second flow passage, The generated heat can blow the user who feels the heat.

The local exhaust system according to the present invention can generate cold air by providing a thermoelectric module (TEM) provided on one surface of a subcituted auxiliary case or a vaporization filter removably installed on the suction port.

In the local exhaust system according to the present invention, one end of the rotary shaft of one motor is coupled to the center of the swirler, and the other end is coupled to the center of the blower fan, so that the swirl fan and the blower fan can be coaxially rotated by one motor .

The local exhaust system according to the present invention is provided with an operation unit capable of setting air volume, temperature control, etc., so that the user can operate the air volume, the temperature of the discharged air, and the like.

The local exhaust system according to the present invention can adjust the direction of the air discharged into the room by providing a vane provided at the discharge port.

The local exhaust system according to the present invention can purify contaminated air around the kitchen hood by providing an air purifying filter detachable to the air inlet.

According to the present invention, since the wind can be provided to the user who feels the heat, user convenience can be improved.

According to the present invention, since the temperature of the kitchen, which has been increased due to the heat generated during cooking, can be lowered by providing cold air, a pleasant kitchen environment can be created.

According to the present invention, since the blowing fan and the swirl fan are rotated coaxially by a single motor, it is possible to use the constitution device efficiently, and waste of energy can be prevented.

According to the present invention, in addition to exhausting contaminated air from the kitchen, air volume and temperature are set according to the user's operation, and clean air can be discharged to the kitchen, so that a kitchen environment suitable for the user can be created according to the user's choice .

According to the present invention, it is possible to provide a comfortable wind regardless of the cooking posture or the body condition by adjusting the direction of the air discharged into the room.

According to the present invention, since the air purifying filter purifies polluted air in the kitchen, the air quality of the kitchen can be improved.

According to the present invention, there is no need to provide a separate air conditioner, an air purifier or the like in the kitchen, so that space can be efficiently utilized.

1 is a perspective view showing an appearance of a local exhaust system according to a first embodiment of the present invention;
2 is a sectional view taken along the line AA 'of the local exhaust system according to the first embodiment of the present invention
FIG. 3 is a cross-sectional view of the AA 'solid section of the local exhaust system according to the first embodiment of the present invention
4 is a partial enlarged view of a portion of the configuration shown in Fig. 3,
5 is a view showing a blowing path of the local exhaust system according to the first embodiment of the present invention
6 is a view showing an exhaust path of the local exhaust system according to the first embodiment of the present invention
7 is a cross-sectional view taken along line AA 'of the local exhaust system according to the second embodiment of the present invention
8 is an enlarged sectional view of the local exhaust system according to the third embodiment of the present invention

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. 1 is a perspective view showing an appearance of a local exhaust system according to a first embodiment of the present invention.

1, the vortex type local exhaust system 1 of the present invention may include a main case 10, an auxiliary case 20, a chimney case 30 and an exhaust duct 40 which form an outer appearance .

The main case 10 forms the lower part of the outer tube and the chimney case 30 and the exhaust duct 40 can be positioned above the main case 10.

The main case 10 may include a first flow passage 34 for introducing polluted air into the room and exhausting the air to the outside. The first flow passage (34) may be formed as an internal space of the main case (10). In detail, the first flow passage 34 may be formed as an internal space of the main case 10 and the chimney case 30. That is, the main case 10 may be connected to the chimney case 30 to communicate with the chimney case 30.

In addition, the main case 10 can receive the auxiliary case 20 therein. This will be described later.

The shape of the main case 10 can be variously formed. For example, the main case 10 may have a rectangular parallelepiped shape, and may have a wider area than the chimney case 30.

The upper surface of the main case 10 may be connected to the chimney case 30 and the lower surface of the main case 10 may have an inlet 16 for guiding contaminated air. The same exhaust assist device may be installed.

The contaminated air flowing from the lower surface of the main case 10 flows along the guide of the first flow passage 34 and can be discharged to the outside of the room.

On the other hand, the main case 10 may include a display unit for visually providing information on the operation state, and an operation unit for allowing a user to operate the operation of the vortex-type local exhaust system 1.

The display unit and the operation unit may be integrally formed by a touch screen method. The main case 10 may include a temperature sensor to interlock with the display unit. That is, the temperature of the installation space of the vortex type local exhaust system 1 of the present invention can be sensed and visually provided to the user.

The operation unit may be configured to allow a user to set at least one of a wind direction, an air flow rate, and a temperature. Accordingly, the user can adjust the air blowing direction of the wind discharged from the second flow path, which will be described later, through the operating portion, and set the cooling temperature value.

The auxiliary case (20) may be inserted into the main case (10). A part of the upper surface of the auxiliary case 20 may be formed integrally with the upper surface of the main case 10. [ For example, one part of the upper surface of the auxiliary case 20 may protrude from the central part of the upper surface of the main case 10 and be exposed in the direction of the room space.

That is, the upper surface of the auxiliary case 20 may protrude from the upper surface of the main case 10.

The auxiliary case 20 includes a second flow passage 24 for providing a flow path for air, a suction port 22 for sucking air in a certain region or region of the installation space (room), a suction port 22 for sucking the suction port 22 And a discharge port 23 for discharging one air toward the front.

The suction port 22 may be formed on the upper surface of the auxiliary case 20. In detail, the suction port 22 may be formed on the upper surface exposed to the outside rather than the inside of the main case 10. That is, the suction port 22 protrudes from the upper surface of the main case 10 and can guide the air sucked. Of course, the position of the suction port 22 is not limited.

The suction port 22 may be formed as a plurality of holes having a rectangular shape on the upper surface of the auxiliary case 20. [ The suction port 22 may be formed to communicate with the inner space of the auxiliary case 20.

The suction port 22 can guide air in the vicinity of the ceiling of the space where the local exhaust device 1 is installed to suck. Specifically, the suction port 22 may guide the air existing in the direction of the top surface of the main case 10 into the second flow passage 24.

A second flow passage (24), which is an air flow passage separate from the first flow passage (34), may be formed by accommodating the auxiliary case (20) in the main case (10). (See FIG. 2)

The indoor air sucked by the suction port 22 may be air existing near the ceiling of the indoor space in which the vortex type local exhaust system 1 of the present invention is installed. The air in the vicinity of the ceiling is room air containing relatively little particles of contaminants such as fine dust and vapor. That is, a position higher than the upper end of the main case 10 of the local exhaust device 1 may be called a non-contaminated area. Therefore, if the air in the non-contaminated area is sucked and discharged in the direction of the user through the blowing fan 60, the user can cool down the heat and create a pleasant kitchen environment in which the user is active.

The area in which pollutants are concentrated is a space for cooking dishes such as a range and a cook top. Therefore, the air in the space where the cooking is performed corresponds to the air having a relatively high degree of pollution requiring exhaust. That is, the periphery of the range, the cooktop, and the like can be called a contaminated area.

The contaminated air existing in the contaminated area can mainly flow into the first flow passage 34 and can be exhausted to the outside, and the relatively less contaminated non-contaminated area air flows into the second flow passage 24 And can be discharged again to the user in the room through the discharge port 23.

Here, the non-contaminated area air is referred to as a first air, and the contaminated area air is referred to as a second air.

The second flow passage 24 may be formed as an internal space of the auxiliary case 20 and may be formed to communicate the suction port 22 and the discharge port 23. And the first flow passage (34). Therefore, the air flowing through the first flow passage (34) does not mix with the air flowing through the second flow passage (24) but flows separately.

The discharge port 23 may be integrally formed with the front surface of the main case 10. For example, the discharge port 23 may be formed as a plurality of square holes in the central portion of the front portion of the main case 10, and may communicate with the second flow passage 24. Therefore, the discharge port 23 can discharge the air sucked through the suction port 22 to the indoor space again.

The discharge port 23 may include a plurality of vanes (not shown) for guiding the discharge direction of air. The plurality of vanes may be installed longitudinally and / or laterally along the discharge port 23 to adjust the discharge direction of air flowing through the second flow passage 24. The discharge direction may be adjusted according to the setting of the user through the operation unit.

The chimney case 30 forms the upper part of the outer appearance, and may be located on the upper side of the main case 10. The chimney case 30 is connected to the upper surface of the main case 10, and the respective inner spaces are connected to communicate with each other.

The inner space of the chimney case 30 may form a part of the first flow passage 34. An exhaust fan 50, which will be described later, may be installed inside the chimney case 30. The contaminated air flowing through the first flow passage 34 by the operation of the exhaust fan 50 flows into the exhaust fan 50 and can be discharged to the outside through the exhaust duct 40.

The exhaust duct 40 is connected to a discharge port of the exhaust fan 50 installed inside the chimney case 30 and may be located above the chimney case 30. The chimney case 30 may extend upward so as to receive the exhaust duct 40. The chimney case 30 and the exhaust duct 40 may be formed integrally with each other. have.

2 is a cross-sectional view taken along the line A-A 'of the local exhaust system according to the first embodiment of the present invention, FIG. 3 is a cross-sectional view taken along line A-A' of the local exhaust system according to the first embodiment of the present invention, 3 is a partial enlarged view of a part of the configuration shown in FIG. 3 as viewed from below.

2 to 4, the vortex type local exhaust system 1 of the present invention includes a ventilation fan 60 accommodated in the interior of the auxiliary case 20, A motor 80 for providing a rotational power to the blower fan 60 and the swirler 70 and a motor 80 disposed in the inside of the chimney case 30 so as to rotate the exhaust duct 40 And an exhaust fan 50 connected to the exhaust fan 50.

The exhaust fan (50) can provide a suction force so that contaminated air in the room flows into the first flow passage (34) through rotation. That is, the contaminated air from the lower surface of the main case 10 through the operation of the exhaust fan 50 can be introduced into the first flow passage 34, Can be introduced into the exhaust fan (50) and exhausted to the outside through the exhaust duct (40).

The ventilation fan (60) can be installed in the inner space of the auxiliary case (20). The blowing fan 60 may include an axial flow fan, a centrifugal fan, and the like. Hereinafter, a centrifugal fan suitable for forming the slim main case 10 so as to improve the aesthetics will be described.

It can be installed in the inner space formed by the auxiliary case 20 of the blowing fan 60, that is, in the second flow passage 24.

The auxiliary case 20 includes an outer case 21 surrounding an inner space from the edge formed by the upper surface of the auxiliary case 20 and the outer peripheral surface of the chimney case 30 to the discharge port 23, And an inner case 25 surrounding the inner space of the auxiliary case 20, which is confined toward the inner direction of the chimney case 30.

The inner case 25 refers to a subsidiary case 20 formed toward a lower end of the chimney case 30 with respect to a rotation axis 81 of a motor to be described later, Means an auxiliary case 20 which is formed toward the front side of the main case 10 with respect to the base 81 as a reference.

The installation position of the blowing fan 60 is not limited. Since the air blowing fan 60 is connected to the rotating shaft 81 of the motor and sucks the air in the axial direction and discharges the air in the centrifugal direction, the air suction direction of the air blowing fan 60 and the air suction direction of the air inlet 22 Positions can be mapped.

The driving motor of the blower fan 60 and the driving motor 80 of the swirler 70 are the same as the installation position of the blower fan 60 from the inner case 25 toward the outlet 23 The installation position of the swirler 70 can also be provided on the lower surface of the main case 10 which corresponds to the installation position of the blowing fan 60 and approaches the discharge port 23. [ At this time, the contaminated air existing near the inlet 16 is gradually distanced from the exhaust fan 50, so that the suction force can be reduced. That is, the suction performance by the exhaust fan 50 can be weakened because the first flow path 34 is long.

For this reason, the blowing fan (60) can be installed to maintain the suction capability of the exhaust fan (50). For example, the blowing fan 60 may be installed in the inner case 25 and the outer case 21 in part. That is, the air blowing fan 60 can be installed so that its center is located at a position defined by the inner case 25 and the outer case 21.

The suction port 22 is located at a position corresponding to the radius of the blowing fan 60 toward the discharge port 23 from an edge formed by the upper surface of the auxiliary case 20 and the outer peripheral surface located at the front surface of the chimney case 30, To the distance of the blade 65 located at the end portion. The position of the swirler 70 is closer to the exhaust fan 50 by the length of the blower fan 60 located in the inner case 25 so that the first flow path 34 is shortened .

The indoor air can be introduced into the long-term second flow passage 24 through the operation of the blowing fan 60, and at the same time, can be discharged to the room again through the discharge opening 23. That is, the blowing fan 60 can suck air positioned above the suction port 22 by rotation and blow the air to the discharge port 23. Hereinafter, the configuration of the blowing fan 60 will be described in detail.

The blowing fan 60 includes a disk-like main plate 61, a blade 65 vertically formed on the back surface of the main plate 61 and guiding the flow of air, And may include a shroud adjacent the inlet 22.

The shroud may be formed in a ring shape connecting outer ends of a plurality of blades (65) provided in the blowing fan (60).

A hub 62 protruding at a predetermined height may be formed at the center of the main plate 61. An insertion groove 63 into which the rotation shaft 81 of the motor 80 is inserted may be formed at the center of the hub 62.

The air guided by the suction port 22 can be radially discharged on the blade 65. That is, the air introduced in the direction of the rotational axis by the main plate 61 can be discharged in the radial direction along the blade 65 without being discharged in the axial direction.

The blade 65 is formed to be curved so as to have a predetermined curvature. The air sucked into the blowing fan (60) flows in the blade (65), and a positive pressure surface which is a convexly raised portion is formed. On the opposite side of the static pressure surface, a negative pressure surface . The front blade of the blade 65 is directed toward the inside of the blowing fan 60 and the rear blade of the blade 65 is directed toward the outside of the blowing fan 60.

Meanwhile, the main case 10 may further include a base for providing a path of contaminated air. The base may be coupled to a lower surface of the main case 10. For example, the base may be integrally formed on a lower surface of the main case 10. Here, the lower surface of the main case 10 can be understood as a surface located above the cooking appliance and facing the cooking appliance for sucking vapor, dust or the like generated in the cooking appliance.

The base may include a flow guide having an inlet 16 for the inflow of contaminated air. The flow guide may be fastened to the base by a fastening member or formed integrally with the base.

The inlet 16 may be regarded as an inlet for sucking air contaminated with the first flow passage 34. Therefore, the contaminated air flowing through the inlet 16 can be exhausted outdoors.

The flow guide may include a depression (15) for guiding the flow of air. The inlet 16 may be formed in the depression 15, for example.

The main case 10 may further include a supporter that is coupled to the motor 80 and supports the motor 80, and a connection portion that connects the supporter to the flow guide.

The supporter may be positioned lower than the inlet 16. Therefore, when the motor 80 is installed on the supporter, the motor 80 can pass through the inlet 16.

The motor 80 may be fastened to the supporter on the upper side of the supporter. Thus, a portion of the motor 80 may be located above the inlet 16, while the other portion may be located below the inlet 16.

The motor 80 can be operated by a user's operation by the operation unit.

The motor 80 may include a rotary shaft 81 for transmitting the rotational power of the motor 80. The motor (80) may be installed inside the main case (10).

One end of the rotation shaft 81 of the motor 80 is inserted into the insertion groove 63 and the other end of the rotation shaft 81 is inserted into the shaft coupling portion 82 of the swasher 70 to be described later. Therefore, one motor 80 operates to operate the blower fan 60 and the swirler 70. [

In another aspect, the insertion groove 63 and the axially engaging portion 82 of the swallower to be described later may be positioned symmetrically with respect to each other on one axis. That is, the blower fan 50 and the swirler 70 can be driven coaxially.

The center of the blower fan 60 and the center of the swirler 70 are connected to each other at a corner vertically connecting the chimney case 30 and the main case 10, And an imaginary extension line drawn vertically downward from the center of the edge formed by the upper surface of the main case 10.

And the rotational axis 81 of the motor may be positioned on the virtual extension line. The lower end of the rotary shaft 81 of the motor located on the imaginary extension line is connected to the shaft coupling portion 82 located at the center of the swirler 70 and the upper end is connected to the center of the blowing fan 60 And can be connected to the insertion hole 63 positioned therein.

When the fan 50 and the swirler 70 are driven coaxially and driven, two motors can be driven by a single motor. Therefore, there is an advantage in terms of energy utilization, .

A method of constructing the exhaust fan 50 and the swirler 70 or the exhaust fan 50 and the blower fan 60 with a single motor may be considered but this is inefficient and has serious drawbacks . In detail, the exhaust fan 50 needs to design the exhaust amount to the maximum in order to suck the contaminated air generated during cooking and exhaust the air to the outside. Depending on the design conditions, the exhaust fan used in the home can be designed to have an airflow value of about 600 CFM.

On the other hand, Suwaler must have a rotational RPM within an appropriate range to improve the ability of the air to swallow through the vortex. The appropriate range of rotation RPM of the swirler has a maximum at about 150 RPM corresponding to the air flow rate of the exhaust fan. Therefore, in order to drive the swower and the exhaust fan with the same motor, the exhaust fan rotational speed must be reduced through a transmission or the like.

That is, the driving through the single motor of the exhaust fan and the swagler requires a sacrifice of lowering the rotational speed of the exhaust fan to about 150 RPM in order to realize the suction performance through swirl generation. This has a fatal disadvantage of reducing the air flow rate (CFM) of the exhaust fan.

Likewise, even if the blower fan and the exhaust fan are designed to be driven by a single motor, it is necessary to design the blower fan to the proper RPM range in order to maintain the indoor air sucking and discharging function of the blower fan, The same problem occurs. In addition, additional components such as a transmission are required to decelerate the speed of the exhaust fan, thereby increasing manufacturing costs.

On the other hand, the ranges of the rotational speed RPM of the blower fan 60 and the swirler 70 overlap. For example, the blower fan 60 and the swirler 70 may be designed to have airflow values of 100 CFM to 200 CFM. That is, assuming that the power of the motor 80 is 100 W, the blowing fan 60 has a value of 100 CFM, and the swaller 70 has a value of 100 CFM.

It is possible to realize the merits of each other even when driven by a single motor through a blowing fan 60 having a rotation speed RPM suitable for an optimum rotation speed RPM of the swirler 70, There is no need to sacrifice. In addition, the exhaust fan 50 can maintain an optimum amount of exhaust air, thereby further improving the kitchen air quality. Further, since there is no need for additional parts such as a transmission, the manufacturing cost can be reduced. In summary, the blower fan 60 and the swirler 70 operate with one and the same drive motor 80, so that the polluted air sucking ability through the formation of the vortex in the local portion can be improved, and the exhaust amount is also maximized, Ability to improve.

The swirler 70 may be located in the space 75 formed by the depression 15. Thus, the swirler 70 may be positioned below the inlet 16. As the motor 80 is installed on the base, it is easy to install the motor 80 and the height of the exhaust device can be reduced.

Particularly, as the driving motor 80 passes through the inlet 16 of the base and is positioned below the inlet 16, the height of the interior of the main case 10 can be further reduced.

At least a portion of the supporter may be positioned so as to overlap with the inlet 16 in a vertical direction so that the motor 80 penetrates the inlet 16. At this time, the supporter may be formed in a shape like "C " so that the supporter stably supports the motor 80, but the flow resistance by the supporter is minimized.

The swirler 70 may include a rotating plate 71 rotating and a plurality of blades 72 disposed in the circumferential direction along the rim of the plate 71.

The rotation plate 71 may be provided with a hole 74 through which contaminated air can pass.

The swirler 70 includes an axial coupling portion 82 connected to the rotary shaft 81 of the motor 80 and at least one connecting rib 82 for connecting the axial coupling portion 82 to the rotary plate 71. [ (73).

For smooth flow of polluted air, the holes 74 may be arranged to overlap with the inlet 16 of the base in the vertical direction.

The plurality of blades 72 may be disposed on a lower surface of the rotary plate 71 and spaced apart from the rotary plate 71 in the circumferential direction.

The shaft coupling portion 82 may be positioned below the rotary plate 71. Therefore, the rotation shaft 81 of the motor 80 may be connected to the shaft coupling portion 82 after passing through the hole 741 of the rotation plate 71. At this time, a part of the motor 80 can also pass through the hole 74 of the rotary plate 71.

The shaft coupling portion 82 may be positioned lower than the plurality of blades 72. The connection portion may be located in the space 75 formed by the depression 15.

The supporter may be positioned above the shaft coupling portion 82. Although not limited thereto, the supporter may penetrate the hole 74 of the rotary plate 71. [

The distance between the swirler 70 and the motor 80 becomes smaller as the shaft coupling portion 82 is connected to the shaft 81 of the motor 80 in a state where the shaft coupling portion 82 is positioned below the rotation plate 71 It is possible to form a localized exhaust device having a slim shape.

FIG. 5 is a view showing a blowing path of the local exhausting apparatus according to the first embodiment of the present invention, and FIG. 6 is a view showing an exhausting path of the local exhausting apparatus according to the first embodiment of the present invention.

Referring to FIG. 5, when the motor 80 is turned on, the non-contaminated area air existing in the upper space of the kitchen according to the rotation of the blowing fan 60 is blown into the blowing fan 60 As shown in Fig. The air flowing along the static pressure surface of the blade 65 may be discharged in the circumferential direction of the blowing fan 60, that is, in the radial direction.

The air discharged in the radial direction from the blowing fan (60) is moved toward the discharge port (23) along the second flow passage (24). The air to be discharged to the discharge port 23 can discharge the air to the kitchen (room) along the direction guided by the vane.

The user can set the wind direction, air volume, temperature, and the like through the operation unit and / or the display unit. For example, the user can operate the wind direction buttons of the operation unit to rotate the vane in the up, down, left, and right directions to set the wind direction suitable for the user. Therefore, the user can solve the heat due to the heat generated during the cooking process.

On the other hand, when the blowing fan 60 rotates, the static pressure surface becomes a high pressure portion, and the negative pressure surface becomes a low pressure portion. That is, it can be understood that the air sucked in the axial direction of the blowing fan 60 is discharged in the circumferential direction while flowing along the static pressure surface.

Referring to FIG. 6, the motor 80 is turned on, and the swirler 70 can operate. When the swirler 70 is operated, rotation starts in one direction.

When the swirler 70 rotates in one direction, the vanes 72 push the contaminated air flowing toward the holes 74 of the swash plate 71 outward in the radial direction of the swash plate 71. When the air passes through the inlet 16 of the base, not only the contaminated air passing through the inlet 16 but also the air around the inlet 16 passes through the inlet 16 of the base. A vortex is formed in the lower portion of the rotating plate 71 by the flow of air.

At this time, as the flow guide of the base guides the air flowing in the radial direction of the swirler 70 downward, a vortex can be effectively formed.

The air that has been contaminated through the formed vortex flows into the inlet 16 more smoothly and flows in the axial direction of the exhaust fan 50 along the first flow path 34 by the operation of the exhaust fan 50 And exhausted to the outside through the exhaust duct 40 connected to the exhaust port of the exhaust fan 50. Of course, the exhaust fan 50 may be installed not only as a centrifugal fan but also as various kinds of fans.

FIG. 7 is a cross-sectional view taken along the line A-A 'of the local exhaust system according to the second embodiment of the present invention, and FIG. 8 is an enlarged cross-sectional view of the local exhaust system according to the third embodiment of the present invention. Hereinafter, in the second embodiment and the third embodiment, the description of the first embodiment is used for the construction overlapping with the first embodiment.

Referring to FIG. 7, the vortex type local exhaust system 1 of the present invention may further include a vaporization humidifying filter 90 and an air purifying filter 95.

The air purifying filter 95 may be installed in the inner space of the auxiliary case 20. In detail, the air cleaning filter 95 may be detachably attached to the air inlet 22. The air purifying filter 95 may include a pre-filter, a HEPA filter, and a deodorizing filter.

The air cleaning filter 95 filters dust, lint, hair, and the like of the air in the non-contaminated area, which is sucked into the suction port 22, to purify the air, because contamination such as dust may be included in the non- have.

The air that has passed through the air cleaning filter 95 can flow to the discharge port 23 along the second flow path 24 by the blowing fan 60. Therefore, since the clean air having passed through the air cleaning filter 95 is discharged, indoor air quality can be improved and clean wind can be provided to the user.

The vaporization and humidification filter (90) may be installed in the inner space of the auxiliary case (20). In detail, the vaporization and humidification filter (90) can be detachably attached to the discharge port (23). Accordingly, the user can easily remove the vaporization and humidification filter 90 fitted into the discharge port 23, lightly wet the discharge port 23, and insert the discharge port 23 into the discharge port 23, which is convenient to use.

The air flowing through the second flow path (24) can be cooled by the latent heat of evaporation of water while passing through the vaporization and humidification filter (90). Accordingly, the air passing through the discharge port 23 can be provided to the user in a cool and cool air flow. Further, since the vaporization and humidification filter 90 is in a state in which moisture is contained therein, it has an advantage that it can filter dust.

Referring to FIG. 8, the vortex type local exhaust system 1 of the present invention may further include a thermoelectric module (TEM) 97.

The thermoelectric module 97 is a device using a Peltier effect, and is composed of a plurality of semiconductor couples which are serially connected in series and thermally parallel. The thermoelectric module 97 moves heat only in one direction through the thermoelectric element while electricity continues to alternately flow above and below the substrate through the respective N-type and P-type devices. Therefore, one surface of the thermoelectric module 97 forms the low temperature portion 97b by the absorption of heat, and the other surface of the thermoelectric module 97 forms the high temperature portion 97a by the release of heat.

That is, the thermoelectric module 97 may include a high temperature portion 97a and a low temperature portion 97b.

The thermoelectric module 97 may be installed in the auxiliary case 20. In detail, the thermoelectric module 97 may form one surface of the auxiliary case 20 located inside the chimney case. That is, the thermoelectric module 97 may be integrally formed with the upper plate of the inner case 25. [ Alternatively, the thermoelectric module 97 may be installed on one side of the cabinet formed on the inner side of the chimney case 30 of the auxiliary case 20.

  When the thermoelectric module 97 is installed on one side of the auxiliary case 20, the upper plate of the inner case 25 is made of a metal material which can be thermally transferred from the low temperature portion 97b of the thermoelectric module 97 . In order to keep the air cooled by the low temperature portion 97b at a low temperature, a heat insulating material may be attached.

When the thermoelectric module 97 is integrally formed with one side of the auxiliary case 20, that is, the one side of the non-assembled auxiliary case 20 formed on the inside of the chiller case 30, (97), the thermoelectric module (97) may form an upper plate of the inner case (25).

The high-temperature portion 97a may be installed to face the exhaust fan 50 so as to be directed to the outside of the auxiliary case 20. In another aspect, the high temperature portion 97a may be positioned in the direction of the first flow path 34. [ Therefore, the heat of the high-temperature portion 97a can be discharged to the outside of the room by the exhaust fan 50 along the first flow path 34. [ In this case, it is not necessary to provide a separate cooling fan for cooling the high temperature part 97a.

The high temperature portion 97a may be integrally attached to the heat generating block, which is a heat resistant object. The heat generating block can prevent a risk that the temperature of the high temperature portion 97a exceeds a permissible temperature when a voltage is applied to the thermoelectric element 97 to break the device.

The low-temperature portion 97b may be installed to face the inside of the auxiliary case 20, that is, toward the blowing fan 60. In other aspects, the low temperature portion 97b may be positioned in the direction of the second flow path 24. Therefore, the cold air of the low temperature part 97a can be discharged to the room by the blowing fan 60 along the second flow path 24. [ The air introduced into the air blowing fan 60 is cooled by the low temperature portion 97b and discharged in the radial direction of the air blowing fan 60 so as to be discharged from the discharge opening 23 according to the guide of the air inlet 22. [ It is possible to provide a cool cold wind to the user.

10: main case 20: auxiliary case
30: chimney case 40: exhaust duct

Claims (11)

A motor having a rotating shaft;
A swirler having a plurality of blades disposed along a rim of the rotating plate, and a shaft coupling portion connected to one end of the rotating shaft;
A main case accommodating the motor and the swirler and having a first flow passage formed therein for sucking the first air, which is contaminated air, to guide the air to be exhausted to the outside;
A second flow passage accommodated in the main case, the second flow passage guiding air to be sucked into the room by sucking second air as non-contaminated air;
A suction port protruding from an upper surface of the main case and formed on an upper surface of the auxiliary case to guide suction of the second air;
A discharge port formed on the front surface of the auxiliary case and guiding the second air to be discharged into the room; And
And a blowing fan installed in the second flow passage and having a blade for guiding the flow of air and an insertion groove connected to the other end of the rotation shaft.
The method according to claim 1,
A vaporization filter detachably coupled to the discharge port; And
And an air purifying filter detachably coupled to the suction port.
The method according to claim 1,
The suction port is formed to correspond to a mounting position of the blowing fan,
Wherein the second air flows in a direction of a center axis of the blowing fan and is discharged in a radial direction.
The method according to claim 1,
An exhaust fan for providing a suction force for sucking the first air into the first flow passage; And
And a chimney case connected to the main case, the chimney case housing the exhaust fan.
5. The method of claim 4,
A plurality of vanes provided at the discharge port to adjust a discharge direction of the second air; And
And an exhaust duct connected to the exhaust fan to guide the first air to be exhausted to the outside.
6. The method of claim 5,
The center of the blower fan and the center of the swirler,
Wherein the chimney case is located on an imaginary extension line drawn downward from a center of an edge vertically connected to the chimney case and the main case.
The method according to claim 6,
And the rotation axis is located on the imaginary extension line.
8. The method of claim 7,
And a thermoelectric module (TEM) provided on one side of the auxiliary case located inside the chimney case.
9. The method of claim 8,
Wherein the high temperature part of the thermoelectric module is directed to the outside direction of the auxiliary case and the low temperature part of the thermoelectric module is formed to face the inside direction of the auxiliary case.
9. The method of claim 8,
Wherein one side of the auxiliary case is formed of the thermoelectric module itself.

The method according to claim 1,
And a control unit installed in the main case and configured to allow a user to set at least one of temperature, air volume, and wind direction.

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