KR20100063548A - Aircleaner having mixed flow type fan - Google Patents

Abstract

PURPOSE: An air cleaner with a diagonal flow fan and the diagonal flow fan are provided to minimize channel loss, and to easily repair or exchange components by assembling each component in the same direction. CONSTITUTION: An air cleaner comprises the following: a diagonal flow fan(200) forming a flow path with a diagonal blade(260); a discharge cover(540) with an outlet(540a) discharging the air to the outside; a filter(400) filtering the air flowed to the diagonal flow fan, and is arranged on an inlet of the diagonal flow fan; and a suction grill(520) sucking the air, and is arranged on the top of the filter.

Description

Air purifier with four-flow fan {AIRCLEANER HAVING MIXED FLOW TYPE FAN}

The present invention relates to an air purifier having a four-flow fan.

An air purifier refers to a device that purifies contaminated air and converts it into fresh air. The air purifier sucks contaminated air into a fan to collect or filter fine dust and deodorize odors.

1A shows a conventional air purifier. When power is supplied to the air cleaner 10 and a button of the operation unit 18 formed on the top cover 16 is operated to operate the cleaning function, a fan (not shown) mounted inside the air cleaner 10 rotates. Starting to suck the outside air into the inside of the air cleaner 10 through the suction grille 14 formed in the lower end of the front cover 12. The sucked air passes through a filter mounted at the rear of the suction grille 14, and the dust or odor contained therein is filtered and purified into clean air. The air changed into clean air is discharged to the outside of the air cleaner 10 through the discharge grill 20 by the rotational force of the fan.

1B shows a flow path of air as a longitudinal cross-sectional view of a conventional air purifier. Conventional air cleaners are configured such that air is sucked in the axial direction (front side) and discharged in the radial direction (upper side) using a centrifugal blower to which a sirocco fan (multi-fan) is applied.

However, such a flow path shape has a disadvantage in that the flow path loss is large because the flow path is vertically redirected, and there is a problem in that a rectangular case is used to fit the vertical flow path shape.

The present invention is designed to solve the problems of the prior art, and an object of the present invention is to provide an air purifier that forms a single flow path shape in order to minimize flow loss.

In addition, an object of the present invention is to provide an air purifier having a cylindrical shape.

In addition, an object of the present invention is to provide an air cleaner that is configured to be assembled in one direction of each configuration of the air cleaner to facilitate the work during installation or replacement of parts.

According to a first aspect of the present invention for achieving the above object, a four-flow fan having a four-flow blade to form a flow path from the inlet to the outlet by the rotation, disposed on the outlet side of the four-flow fan A discharge cover having a discharge port for discharging air from the four-flow fan to the outside, a filter disposed at an inlet side of the four-flow fan to purify the air entering the four-flow fan, and an upstream side of the filter. The air purifier is disposed and includes an intake grill for sucking external air, and the direction of the air sucked into the intake grill coincides with the direction of the air discharged from the discharge cover.

According to a second aspect of the present invention, the four-flow fan has a hollow outer fixing portion whose cross section becomes wider from the inlet to the outlet portion, and is disposed in the hollow of the outer fixing portion and has a cross section toward the outlet from the inlet. The hollow inner fixing portion further widens, and the plurality of swirling blades are provided between the outer fixing portion and the inner fixing portion.

According to the third aspect of the present invention, the interval between the outer fixing portion and the inner fixing portion is widened from the inlet to the outlet side.

According to a fourth aspect of the present invention, the fan guide may further include a fan guide disposed between the four-flow fan and the discharge cover to guide the air from the four-flow fan to the discharge port of the discharge cover. The flow path narrows toward the discharge port side from the crossflow fan side.

According to a fifth aspect of the present invention, a motor for transmitting rotational force to the swirling fan is installed in the hollow of the inner fixing part of the swirling fan.

According to a sixth aspect of the present invention, the suction grille, the filter, the four-flow fan, the motor, the fan guide, and the discharge cover may be sequentially coupled or separated in one direction.

According to a seventh aspect of the present invention, the suction grill, the four-flow fan, and the discharge cover have a circular cross section and are installed in a cylindrical body case.

According to the eighth aspect of the present invention, the hollow outer fixing portion whose cross section is widened toward the outlet portion from the inlet portion, the hollow inner high which is disposed in the hollow portion of the outer fixing portion and whose cross section becomes wider from the inlet portion to the outlet portion side And a vortex-shaped blade provided in plurality between the outer fixing portion and the inner fixing portion, wherein the outer fixing portion, the inner fixing portion, and the swirling blade are integrally rotated. To provide a four-flow fan.

According to the ninth aspect of the present invention, the distance between the outer fixing portion and the inner fixing portion is widened from the inlet to the outlet side.

According to the first aspect of the present invention, since the air suction direction and the discharge direction of the air cleaner are the same, the flow path loss can be minimized.

According to the second aspect of the present invention, since the four-flow fan extends in the radial direction, it can be discharged in the axial direction while receiving the air spread in the centrifugal direction by the four-flow blade.

According to the third aspect of the present invention, since low pressure air flows into the inlet side of the four-flow fan and high pressure air flows out of the outlet side, the pressure loss by the filter is reduced on the inlet side, and a large amount of high pressure is applied on the outlet side. It can exhaust air. In other words, by adopting an expansion structure in consideration of the expansion index, a structure advantageous for flow and pressure formation is realized.

According to the fourth aspect of the present invention, since the flow path of the discharge port is narrowed, high-speed flow is generated, and the clean air discharged to the outside is discharged to a distant place, thereby promoting the purification of indoor air.

According to a fifth aspect of the present invention, by providing a motor for rotating the four-flow fan inside the four-flow fan, it is possible to increase the space utilization and downsize the air cleaner.

According to the sixth aspect of the present invention, since the respective components of the air cleaner can be sequentially combined or separated in one direction, it is easy to work on repair or replacement of the components.

According to the seventh aspect of the present invention, by eliminating the shape of the conventional air purifier in a rectangular shape to implement a cylindrical, thereby providing a slimmer air cleaner.

According to the eighth aspect of the present invention, since the four-flow fan extends in the radial direction, the flow-through loss is achieved by discharging in the axial direction while receiving the air spread in the centrifugal direction by the four-flow blade, and matching the suction direction with the discharge direction. Can be minimized.

According to the ninth aspect of the present invention, since low pressure air flows into the inlet side of the four-flow fan and high pressure air flows out of the outlet side, the pressure loss by the filter is reduced on the inlet side, and a large amount of high pressure is applied on the outlet side. It can exhaust air.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2A is a perspective view of a four-flow fan in accordance with an embodiment of the present invention, FIG. 2B is a cut-away perspective view of a portion of the four-flow fan, and FIG. 2C shows a longitudinal cross-sectional view of the four-flow fan.

As shown in Figures 2a to 2c, the four-flow fan 200 has a hollow outer fixing portion 220, a hollow inner fixing portion 240 and a plurality of swirling blades 260. The outer fixing part 220 has a circular cross-sectional shape, and has an expanded structure in which the cross section is wider from the inlet to the outlet. The inner fixing part 240 also has a circular cross-sectional shape, and has an expanded structure in which the cross section is widened from the inlet to the outlet. Both the outer fixing part 220 and the inner fixing part 240 have an expansion type structure, but the rate of change of the expansion of the outer fixing part 220 is greater than that of the expansion of the inner fixing part 240, so that the outer fixing part 220 and The interval between the inner fixing part 240 is formed to widen toward the outlet toward the outlet. The inflow part side of the outer fixing part 220 is open, and the inflow part side of the inner fixing part 240 is closed, and a flow path is formed in the space between the outer fixing part 220 and the inner fixing part 240. Can be. The inner space of the inner fixing part 240 is utilized as a space in which a motor to be described later is mounted.

A plurality of blades 260 are installed at regular intervals between the outer fixing part 220 and the inner fixing part 240. The blade 260 serves to connect the outer fixing part 220 and the inner fixing part 240 and at the same time forms a flow path from the inlet to the outlet during rotation. The blade 260 is a four-flow blade having a shape that is curved at a predetermined angle, and may form a flow path that sucks air from the inlet side and discharges it toward the outlet portion during rotation. The blade 260 may be mounted to the outer fixing portion 220 and the inner fixing portion 240 by welding or other adhesive, or may be injection molded integrally with the outer fixing portion 220 and the inner fixing portion 240.

3A is a perspective view of the air purifier to which the four-flow fan 200 according to the embodiment of the present invention is applied, and FIG. 3B is a longitudinal cross-sectional view thereof.

3A and 3B, the air cleaner 100 according to the present invention includes a four-flow fan 200, a fan guide 280, a motor 300, a motor guide 320, a filter 400, and a filter guide. 420, the main body case 500, the suction grille 520, and the discharge cover 540, and the entire shape is cylindrical.

The motor guide 320 is mounted in the inner space of the inner fixing part 240 of the swirling fan 200. The motor guide 320 accommodates the motor 300 and guides the rotating shaft of the motor 300 to be fastened to the rotation center of the four-flow fan 200. Since the rotation shaft of the motor 300 is coupled to the center of the quadrature fan 200, the quadrature fan 200 may be rotated by the rotational driving force of the motor 300.

The fan guide 280 is installed at the outlet side of the crossflow fan 200 to guide the air flowing out of the crossflow fan 200 to be discharged to the outside. The outer portion of the fan guide 280 is formed to be continuous to the outer fixing portion 220 of the swirling fan 200, the inner portion of the fan guide 280 is continuous to the inner fixing portion 240 of the swirling fan 200. It is formed to be. Accordingly, a flow path is formed between the outer side and the inner side of the fan guide 280, and the flow path is continuous with the flow path of the four-flow fan 200. The flow path of the fan guide 280 is formed to be narrow in the direction away from the crossflow fan 200.

The filter 400 is mounted to the filter guide 420 and is disposed at the inlet side of the four-flow fan 200. The filter guide 420 is formed in two stages. The lower end of the filter guide 420 is formed in a cylindrical shape having the same size as the inner diameter of the body case 500, the upper end of the filter guide 420 is formed in a square of a smaller size than the lower end. At the lower end of the filter guide 420, a functional filter 400a, such as a deodorizing filter and a dust collecting filter, is formed in a circular shape. The square HEPA filter 400b is installed at the upper end of the filter guide 420. Although the HEPA filter 400b can be comprised circularly, since the cost of manufacturing a circular HEPA filter is expensive, it is preferable to use a square filter. 4 shows the A-A cross section of FIG. 3B. As shown in FIG. 4, the circular functional filter 400a is configured to cover all of the square hepa filter 400b. Therefore, all air passing through the functional filter 400a may be filtered through the hepa filter 400b.

The main body case 500 is formed in a cylindrical shape, and a suction grill 520 is installed at the lower end of the main body case 500. The suction grille 520 is formed with a belt-shaped suction port 520a arranged in a plurality of concentric circles. The suction grille 520 is disposed under the filter 400 so that air passing through the suction port 520a passes through the filter 400. The discharge cover 540 is installed at the upper end of the main body case 500. A circular strip-shaped discharge port 540a is formed on the outer circumference of the discharge cover 540. The discharge port 540a is formed to be continuous with the flow path of the fan guide 280 so that air from the fan guide 280 may be discharged through the discharge port 540a.

Next, the operating principle of the air cleaner 100 according to the present invention will be described.

5 shows a flow path of the air cleaner 100 according to the present invention. Referring to FIG. 5, when power is applied to the air cleaner 100, the motor 300 is rotated and the four-flow fan 200 connected to the motor 300 is rotated by the rotation of the motor 300. The flow path flowing from the bottom to the top is formed between the outer fixing part 220 and the inner fixing part 240 of the swirling fan 200 by the rotation of the swirling fan 200. This flow path generates a suction force for sucking air from the suction port 520a of the suction grill 520, and generates a ground output for discharging air to the discharge port 540a of the discharge cover 540. That is, indoor air outside the air purifier 100 is introduced into the inlet 520a, and the introduced air is filtered through the filter 400, and the air passing through the filter 400 is the four-flow fan 200. Passed between the outer fixing portion 220 and the inner fixing portion 240 of the discharge through the discharge port 540a to the outside.

As described above, according to the air cleaner 100 of the present invention, since the direction of the air flowing into the suction port 520a and the direction of the air discharged from the discharge port 540a coincide, the flow path loss can be minimized.

In addition, since the outer fixing portion 220 and the inner fixing portion 240 of the four-flow fan 200 is an expandable structure in which the cross section becomes wider toward the discharge direction, air scattered in the centrifugal direction by the four-flow blade 260. You can export in the axial direction while accepting the

In addition, the interval between the outer fixing part 220 and the inner fixing part 240 of the four-flow fan 200 is formed to be wider toward the discharge direction. That is, the inflow side of the crossflow fan 200 has a narrow flow path and the outflow side has a wide flow path. Thus, by forming a narrow flow path at the inflow side of the crossflow fan 200, the crossflow fan 200 The flow rate of air flowing into) increases and the pressure decreases. Therefore, the pressure loss of the air passing through the filter 400 can be reduced by realizing the pressure applied to the filter 400 arranged on the inlet side of the crossflow fan 200 at a low pressure. On the other hand, since the air passing through the filter 400 at low pressure flows into the four-flow fan 200 and then the flow path of the four-flow fan 200 gradually widens, the pressure gradually increases while passing through the inside of the four-flow fan 200. High pressure air can then be discharged to the outlet. That is, since low pressure air flows into the inlet side of the four-flow fan 200 and high pressure air flows out of the outlet side, the pressure loss by the filter 400 is reduced on the inlet side, and a large amount of high pressure air is provided on the outlet side. It can be discharged.

On the other hand, the air passing through the crossflow fan 200 passes through the flow path formed in the fan guide 280, the flow path of the fan guide 280 is configured so that the flow path is gradually narrowed toward the discharge direction. Since the flow path is narrowed, high-speed flow is generated, and the clean air discharged to the outside is discharged to a distant place, thereby promoting the purification of indoor air.

Next, a method of assembling the air cleaner 100 according to the present invention will be described.

6 shows an exploded perspective view of the air cleaner 100. Referring to FIG. 6, the suction grill 520, the filter guide 420 having the filter 400, the four-flow fan 200, the motor guide 320 having the motor 300, and the fan guide 280. , And the discharge cover 540 is configured to be sequentially coupled or separated in one direction. As described above, by configuring the components of the air cleaner 100 to be coupled or separated in one direction, the installation work is easy, and the repair work or the parts replacement due to the failure are facilitated.

1A is a perspective view of a conventional air purifier.

1B is a longitudinal sectional view showing a flow path of a conventional air purifier.

2A is a perspective view of a four-flow fan according to the present invention.

Figure 2b is a cutaway perspective view of a four-flow fan according to the present invention.

2C is a longitudinal sectional view of the four-flow fan according to the present invention.

3A is a cutaway perspective view of an air purifier according to the present invention.

3B is a longitudinal sectional view of the air purifier according to the present invention.

4 is a cross-sectional view taken along line A-A of FIG. 3B.

5 is a longitudinal sectional view showing a flow path of the air purifier according to the present invention.

6 is an exploded perspective view of the air purifier according to the present invention.

Explanation of symbols on the main parts of the drawings

100 air purifier 200 quadruple fan

220 Outer fixing part 240 Inner fixing part

260 Quadruple Blade 280 Fan Guide

300 Motor 320 Motor Guide

400 Filter 420 Filter Guide

500 body case 520 suction grille

540 discharge cover

Claims (9)

Four-flow fan 200 having a four-flow blade 260 to form a flow path from the inlet to the outlet by the rotation thereof, A discharge cover 540 disposed on an outlet side of the crossflow fan 200 and having a discharge port 540a for discharging air from the crossflow fan 200 to the outside; A filter 400 disposed at an inlet side of the four-flow fan 200 to purify the air entering the four-flow fan 200, and A suction grill 520 disposed at an upstream side of the filter 400 to suck outside air; The air purifier, characterized in that the direction of the air sucked into the suction grill 520 and the direction of the air discharged from the discharge cover (540). The method according to claim 1, The turbulent fan 200 has a hollow outer fixing part 220 having a cross section widening from an inlet part toward an outlet part side, and is disposed in a hollow of the outer fixing part 220 and is cross sectioned toward an outlet part side from the inlet part. It is further provided with a hollow inner fixing portion 240, Airflow purifier, characterized in that the plurality of cross-flow blades (260) is installed between the outer fixing portion 220 and the inner fixing portion (240). The method according to claim 2, Air purifier, characterized in that the interval between the outer fixing portion 220 and the inner fixing portion 240 is widened toward the outlet side from the inlet portion. The method according to claim 3, The fan guide 280 is disposed between the four-flow fan 200 and the discharge cover 540 to guide the air from the four-flow fan 200 to the discharge port 540a of the discharge cover 540. Including more, The fan guide 280 is an air purifier, characterized in that the flow path is narrowed toward the discharge port (540a) side from the side of the four-flow fan (200). The method according to any one of claims 2 to 4, Air purifier, characterized in that the motor 300 for transmitting a rotational force to the four-flow fan (200) in the hollow portion of the inner fixing portion 240 of the four-flow fan (200). The method according to claim 5, The suction grille 520, the filter 400, the swirl fan 200, the motor 300, the fan guide 280, and the discharge cover 540 are sequentially coupled or separated in one direction. Air purifier, characterized in that possible. The method according to any one of claims 1 to 4, The suction grill (520), the four-flow fan (200), and the discharge cover (540) has a circular cross-sectional shape, characterized in that installed in the cylindrical body case (500). Hollow outer fixing part 220, the cross section is wider from the inlet to the outlet side, A hollow inner fixing part 240 disposed in the hollow of the outer fixing part 220 and having a wide cross section from an inlet to an outlet; and It is provided with a plurality of cross-flow blades 260 are installed between the outer fixing portion 220 and the inner fixing portion 240, The outer fixing portion 220, the inner fixing portion 240, and the four-flow fan, characterized in that the four-blade blade 260 is rotated integrally. The method according to claim 8, The four-flow fan, characterized in that the interval between the outer fixing portion 220 and the inner fixing portion 240 is widened toward the outlet side from the inlet portion.

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