KR20040104901A - Air-Conditioner - Google Patents

Abstract

PURPOSE: An air conditioner is provided to realize a small and slim air conditioner by reducing the whole size thereof by obtaining large blowoff force even in small size, and realize uniform air discharge in upper and lower direction. CONSTITUTION: A cabinet(10) has air paths(101,102) for sucking and discharging air. Heat exchangers(11) are installed in the cabinet. A helical fan(13) is formed of a rotary shaft installed vertically in the cabinet, a long cylindrical hub fixed at the rotary shaft, and helical blades formed on an outer peripheral surface of the hub, drawing a helical locus along by axial direction from one end of the hub to the other end. A driving motor(12) is combined with a lower end of the rotary shaft at a lower part of the helical fan for rotating the rotary shaft in one direction or two-way direction. A motor support member(18) supports the driving motor in the cabinet.

Description

Air Conditioner {Air-Conditioner}

The present invention relates to an air conditioner, and more particularly, to an air conditioner capable of discharging air in both up and down directions by reducing the overall size by improving the structure of a blower fan.

As is well known, an air conditioner liquefies a refrigerant gas compressed in a compressor in a condenser, and then depressurizes it through an expansion valve, and then vaporizes it again in an evaporator to cool the room by using the heat of vaporization of the refrigerant absorbed. It is a device that provides a comfortable temperature environment to humans by performing the reverse to heat the room.

One of the air conditioners mounted on the floor of the room and used for cooling a relatively large space is a packaged air conditioner. An example of the configuration and operation of a conventional packaged air conditioner will be described with reference to FIG. The explanation is as follows.

As shown in FIG. 1, the indoor unit of a conventional packaged air conditioner is a heat exchanger for cooling air in an upper side of a cabinet 1 having a lower air inlet 2 and an upper air outlet 3. The machine 6 is provided, and the lower side is equipped with the centrifugal blower fan 4 which draws in external air through the air suction port 2, and blows it toward the said heat exchanger 6. As shown in FIG.

Therefore, air is introduced through the air inlet 2 of the lower part of the cabinet 1 by the operation of the centrifugal blower fan 4, and the air thus introduced is a heat exchanger installed at the top of the centrifugal blower fan 4. After passing through (6) and cooled by heat exchange, it is discharged into the room through the air discharge port (3) in the upper cabinet (1).

Although not shown in the drawings, the outdoor unit of the packaged air conditioner is provided with a compressor for compressing and discharging the refrigerant at high temperature and high pressure, and a condenser and blower fan for condensing the refrigerant discharged from the compressor.

However, the conventional packaged air conditioner having the above structure uses a centrifugal blowing fan such as a sirocco fan or a turbo fan as a means for blowing air. The centrifugal blowers have a flow characteristic in which the inflow direction and the discharge direction of the air are orthogonal to each other. Therefore, the centrifugal blower fans receive a lot of zero medicine at the attachment position and the direction of the centrifugal blower fan when the air conditioner is designed. In order to reduce the size and size of the air conditioner has to be very difficult because the size of the blower fan must be so large.

Of course, when the axial fan is used, the air flows in the axial direction and is discharged in the axial direction, so that it is hardly restricted by the location and direction of the blower fan. Since the diameter needs to be greatly increased, there is a problem of increasing the size of the air conditioner as a whole. Therefore, almost no axial flow fan is used in the indoor unit of a conventional air conditioner.

In addition, since the centrifugal blower fan applied to the conventional packaged air conditioner is unable to discharge wind uniformly during forward and reverse rotation, the cooling and cooling air is always discharged only from the upper side. Inability to change the discharge direction may limit the function of the air conditioner and cause user dissatisfaction.

Accordingly, the present invention is to solve the above problems, by improving the structure of the blower fan is applied to the air conditioner to make the air flow of the high air volume even in a small size in the axial direction to reduce the size of the entire air conditioner Its main purpose is to allow it to be reduced.

Another object of the present invention is to allow the blower fan to have a certain amount of air flow in the forward and reverse rotation to enable the discharge of air at a desired temperature in both the upper and lower sides of the air conditioner.

1 is a sectional view showing the main parts of a conventional general air conditioner

2 is a sectional view showing the main parts of an embodiment of an air conditioner according to the present invention;

3 is a perspective view showing the structure of the spiral fan and the fan housing of the air conditioner of FIG.

4 is a longitudinal sectional view showing the structure of the fan housing of FIG.

5 is a perspective view showing the structure of an upper support member of the air conditioner of FIG.

6 is a front view of the upper support member of FIG.

7 is a perspective view showing the structure of the motor support member of the air conditioner of FIG.

8 is a sectional view showing the main parts of another embodiment of an air conditioner according to the present invention;

9 is a sectional view showing the principal parts of another embodiment of an air conditioner according to the present invention;

10 is a sectional view showing the principal parts of another embodiment of an air conditioner according to the present invention.

11 is a perspective view of the spiral fan of the air conditioner of FIG.

12 is a cross-sectional view of main parts of the spiral fan of FIG.

13 is a plan view of the spiral fan of FIG.

Explanation of symbols on the main parts of the drawings

10: cabinet 12: drive motor

13: spiral fan 15: fan housing

151, 152: 1.2 fan housing 17: upper support member

171: bearing portion 172a ~ 172d: support

173a, 173b: 1st and 2nd fixing bracket 18: motor support member

181: motor mounting portion 182: motor fixing groove

183: vibration absorbing packing material 184a ~ 184d: support

185a, 185b: 1st and 2nd fixed bracket

The present invention for achieving the above object is a cabinet formed with a plurality of air passages through which air is sucked and discharged; A heat exchanger installed in the cabinet; A rotating shaft vertically installed in the cabinet, an elongated cylindrical hub fixed to the rotating shaft, and a spiral blade formed on the outer circumferential surface of the hub by drawing a spiral trajectory along the axial direction. A spiral fan configured to forcibly blow air; A driving motor coupled to a lower end of the rotating shaft at a lower portion of the helical fan to rotate the rotating shaft in one or two directions; It provides an air conditioner comprising a motor support member for supporting the drive motor in the cabinet.

According to another embodiment of the present invention, there is provided a cabinet including a plurality of air passages through which air is sucked in and discharged; A heat exchanger installed in the cabinet; A rotating shaft installed vertically in the cabinet; A plurality of axial flow fans fixed at regular intervals and spaced apart from the rotation shaft; A driving motor coupled to a lower end of the rotating shaft to rotate the rotating shaft in one or two directions; An air conditioner including a motor support member for supporting the drive motor in the cabinet is provided.

According to yet another embodiment of the present invention, there is provided a cabinet including a plurality of air passages through which air is sucked in and discharged; A heat exchanger installed in the cabinet; A rotating shaft installed vertically in the cabinet, an elongated cylindrical hub fixed to the rotating shaft, and a spiral trajectory formed along an axial direction on an outer circumferential surface of the hub, the upper and lower portions having a predetermined length than the upper and lower portions of the hub; A spiral fan formed of an elongated spiral blade and a connecting member formed inside the hub to be fixedly coupled to an upper end of the rotating shaft, the spiral fan configured to forcibly blow air in a vertical axial direction of the cabinet; A fan housing installed to surround an outer portion of the spiral fan; A driving motor coupled to a lower end of the rotating shaft at a lower portion of the helical fan to rotate the rotating shaft in one or two directions; An air conditioner including a motor support member for supporting the drive motor in the cabinet is provided.

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

First, Figure 2 shows the configuration of an embodiment of the air conditioner according to the present invention, a plurality of air passages (101, 102) are formed in each of the upper and lower portions of the cabinet 10, the interior of the cabinet 10 The lower part of the heat exchanger 11 is arranged to form a substantially 'V' shape. Here, the air passage 101 of the lower portion of the cabinet 10 is formed on both sides of the front and rear sides of the cabinet 10 to allow air to flow through each part of the 'V'-shaped heat exchanger (11). do.

In the cabinet 10, external air is forcibly introduced through any one of the respective air passages 101 and 102, and the inflowed air flows in a vertical axial direction to the other air passages 102 and 101. The helical fan 13 and the drive motor 12 which blow air with () are provided.

The drive motor 12 is fixed in the cabinet 10 by the motor support member 18, and the upper end of the helical fan 13 is rotatably supported in the cabinet 10 by the upper support member 17. do.

As shown in FIGS. 3 and 4, the helical fan 13 is also called a taeguk fan, which is coupled to the driving motor 12 to rotate in a vertical rotation shaft 131 and fixed to the rotation shaft 131. Combined elongated cylindrical hub 132 and two blades 133 formed spirally twisted in the axial direction from one end to the other end of the hub 132 on the outer circumferential surface of the hub 132, that is, drawing a spiral trajectory Each of these blades 133 has a constant width from the top to the bottom of the hub 132. Here, the blade 133 is formed in a position where the two are opposed to each other, that is, 180 degrees apart, alternatively, two or more blades may be formed at regular intervals.

In addition, each blade 133 of the helical fan 13 is not limited to the twisted angle from one end to the other end, the helical fan 13 is formed 180 degrees or less in the axial direction of the hub 132 mutually The workability is good so that there is no overlapping area.

Since the spiral fan 13 configured as described above is helically twisted along the vertical axial direction of the blade 133, the air helical when the hub 132 and the blade 133 of the spiral fan 13 rotate. It passes in the axial direction along the blade 133 surface of the fan (13). In addition, when the helical fan 13 rotates in the reverse direction, air passes through the helical fan 13 in the opposite direction, and the air volume and the wind pressure generated at this time are almost the same if the external conditions are the same.

Meanwhile, a cylindrical fan housing 15 having an upper end and a lower end opened at the right side of the spiral fan 13 is installed to surround the outside of the spiral fan 13, and the fan housing 15 is a spiral fan. When air is blown by the rotation of (13), it acts as a passage for increasing the static pressure and constantly blowing a large amount of wind.

The fan housing 15 may be integrally formed, but as illustrated in the drawing, two of the first fan housing 151 and the second fan housing 152 that are symmetrically installed about the rotation shaft 11 may be formed. It can be formed to be divided into parts. Here, the first and second fan housings 151 and 152 may be installed such that each corner portion is connected to the inner wall surface of the cabinet 10.

The first and second fan housings 151 and 152 are formed to have an intermediate portion in a substantially straight shape, and to form an extended portion in which the lower end and the upper end through which air is introduced and discharged gradually extend outward. Preferably, each of the expansion parts has a curved shape with a predetermined curvature, wherein the first and second fan housings 151 and 152 preferably have an inlet curvature radius greater than an outlet curvature radius.

On the other hand, Figure 5 and Figure 6 is a view showing the structure of the upper support member 17, the upper support member 17 is a bearing portion that the upper end of the rotating shaft 131 of the spiral fan 13 is rotatably supported ( 171, four support bars 172a to 172d in the form of bars extending outwardly from both sides of the bearing portion 171, and two supports 172a and 172b on one side of the supports 172a to 172d. The first fixing bracket 173a fixed to the inner wall surface of the cabinet 10 and the other two supports 172c and 172d on opposite sides of the first fixing bracket 173a. It is formed to connect the outer end is made of a second fixing bracket (173b) fixed to the inner wall surface of the cabinet (10). The bearing portion 171 and the two supports (172a, 172b; 172c, 172d) and fixing brackets (173a; 173b) connecting these supports are triangular when viewed from above.

The bearing part 171 may be made of a self-lubricating material having a good lubrication or a bearing (not shown) installed therein to facilitate the rotation of the helical fan 13.

The first and second fixing brackets 173a and 173b may be fixed to the inner wall surface of the cabinet 10 by using fastening means such as screws or bolts.

In addition, each support (172a ~ 172d) of the upper support member 17 is preferably formed to be inclined upwardly outward from the bearing portion 171, which reduces the noise when the air is discharged through the helical fan (13) For sake.

That is, when the air passing through the helical fan 13 passes through the supports 172a to 172d of the upper support member 17, a vortex is generated, and this vortex generates a constant frequency. If the supports 172a to 172d are formed at the same height, the same frequency may be generated by vortices at all points of the supports 172a to 172d to amplify the noise.

However, as described above, when the supporters 172a to 172d are inclined, the noises can be reduced because the frequencies due to vortex generation vary in the respective parts of the supporters 172a to 172d.

On the other hand, Figure 7 is a view showing the structure of the motor support member 18, the motor support member 18 is a motor having a concave motor fixing groove 182 is formed so that the lower end of the drive motor 12 is coupled to the center It is provided with a mounting portion 181, and similar to the upper support member 17, the four support (184a ~ 184d) extending to both sides of the motor mounting portion 181 and the outer end of each of the support (184a ~ 184d) Two first and second fixing brackets 185a and 185b for connecting are provided.

The motor support member 18 also forms a triangle when the motor mounting portion 181, the two supports 184a and 184b and 184c and 184d and the fixing brackets 185a and 185b are viewed from above.

In order to reduce vibration generated when the driving motor 12 is driven, a vibration absorbing packing material made of a flexible rubber or synthetic resin material into which the lower end of the driving motor 12 is fitted into an inner circumference of the motor fixing groove 182 ( 183 is preferably installed.

The support 184a ~ 184d preferably has a circular cross section to reduce the resistance of the air flowing into the helical fan (13).

An air conditioner according to an embodiment of the present invention configured as described above operates as follows.

When the user starts the operation of the air conditioner, the refrigerant is supplied to the both heat exchangers 11 from an external outdoor unit (not shown) composed of a conventional compressor, a condenser, and the like, so as to operate the driving motor 12. The spiral fan 13 starts to rotate.

As the helical fan 13 rotates, air is introduced through the air passage 101 under the cabinet 10, and the air thus introduced is cooled while passing through the heat exchanger 11 and then of the helical fan 13. Flow axially from bottom to top.

At this time, since the fan housing 15 has a structure in which the upper and lower portions are expanded, air inflow and discharge into the helical fan 13 is smoothly performed. In addition, since the fan housing 15 has an orifice structure with a concave center, the pressure difference between the inlet and the outlet of the helical fan 13 is generated, and the flow rate is increased by the pressure difference. .

Air passing through the helical fan 13 is discharged into the room through the air passage 102 above the cabinet 10 to cool the room to a desired temperature.

On the other hand, the air conditioner of the present invention has a structure that can obtain almost the same amount of air as in the forward rotation even if the spiral fan 13 in the reverse direction, the cabinet 10 by rotating the spiral fan 13 in the reverse direction Indoor air flows through the upper air passage 102, and the air thus introduced passes axially from the top to the bottom of the helical fan 13, and then passes through the heat exchanger 11 to the bottom of the cabinet 10. It is discharged to the room through the furnace 101.

When the heating is to be performed by the air conditioner as described above, a heater may be installed in the cabinet to discharge the air heated by the heater into the room.

On the other hand, Figure 8 is a view showing another embodiment of the air conditioner according to the present invention, as in the air conditioner of this embodiment, the upper portion of the drive motor 12 is the inner side of the hub 232 of the spiral fan 23 It may be installed in a form that is inserted into the lower portion to some extent. Reference numeral 233 denotes a blade formed spirally along the axial direction on the outer circumferential surface of the hub 232.

The air conditioner such as the drive motor 12 is located inside the lower portion of the helical fan 23, so the distance between the center of gravity of the helical fan 23 and the coupling portion of the helical fan 23 and the drive motor 12. It can be reduced, and thus can reduce the vibration during the rotation of the helical fan 23, there is an advantage that can reduce the size of the entire air conditioner.

Further, in the above-described embodiments of the air conditioner, the cabinets 10 may be formed in a rectangular parallelepiped form like a conventional air conditioner, but the cabinet may be configured in a cylindrical shape in consideration of the shapes of the spiral fans 13 and 23. It may be. In this case, not only can the entire cabinet be reduced in size, but also the design can improve the aesthetic characteristics compared to conventional air conditioners.

In addition, although the spiral fan of the air conditioners of the above-described embodiment is configured as a single, alternatively, the spiral fan may be divided into a plurality of up and down and may be configured in multiple stages.

9 shows another embodiment of the air conditioner according to the present invention. In this embodiment, the fan is a blower fan for blowing air. The axial fan (333, 334) is fixed to the rotary shaft 331 connected to the up and down to configure the blowing fan (33) in multiple stages, and the fan housing (15) outside the axial fan (333, 334) It consists of the installed configuration.

The upper end of the rotating shaft 331 is rotatably coupled to the upper support member 17 having a structure similar to the upper support member 17 of the above-described embodiment.

According to this type of air conditioner, when the rotating shaft 331 is rotated by the operation of the drive motor 12, the two axial flow fans 333, 334 coupled to the rotating shaft 331 is rotated at the same time Air is introduced through the air passage 101 formed at the bottom of the cabinet 10.

The introduced air is cooled through the heat exchanger 11 and then blown upward through two axial flow fans 333 and 334, and then discharged to the outside through the air passage 102 at the top of the cabinet 10.

As described above, the air conditioner includes an air conditioner to which the axial fans 333 and 334 are configured in multiple stages inside the fan housing 15 to form the blower fan 33. Similarly, it has the advantage of increasing the static pressure while blowing air in the axial direction.

The cabinet 10 of the air conditioner of the above embodiment may also be formed in various forms such as a rectangular parallelepiped or a cylindrical shape.

10 to 13 show another embodiment of an air conditioner according to the present invention.

The air conditioner of this embodiment has a structure in which an upper portion of the drive motor 12 is led to a lower side of the helical fan 43 similar to the air conditioner shown in FIG. 8, and the helical fan 43 has a drive motor without an upper support member. It is supported in a rotatable state only by the rotating shaft 431 axially coupled with 12).

The drive motor 12 is supported by a motor support member 18 fixed to the cabinet 10. Since the motor support member 18 may be configured in the same way as the configuration of the motor support member illustrated in FIG. 7, detailed descriptions of the structure and the operation thereof will be omitted.

11 and 12, two blades 433 are formed while drawing a spiral trajectory on the outer circumferential surface of the hollow cylindrical hub 432, wherein the blades 433 are formed in the spiral fan 43. The vertical length is longer than the vertical length of the hub 432 is formed a certain length, the lower end of the blade 433 from the inner side in contact with the lower end of the hub 92 to the outer tip (tip) of the lower end It has an incised form. Accordingly, the lower end of the blade 433 has a generally triangular shape.

In addition, each of the blades 433 has a cross section of an approximately 'S' shape or a taiji pattern, and the lower portion has a simple arc-shaped cross section while gradually extending the tip portion toward the lower side.

In addition, the connecting plate 434 is fixed to the middle portion of the hub 432 is fixed to the end of the rotating shaft 431 is formed horizontally. The connecting plate 434 is preferably formed to be substantially flat in the center portion and the outer portion is curved to the upper side for strength reinforcement.

In addition, a plurality of radially extending reinforcing ribs 435 are integrally formed on the upper and lower surfaces of the connecting plate 434 to further increase the strength of the connecting plate 434. The reinforcing rib 435 is preferably formed symmetrically on the upper and lower surfaces of the connecting plate 434, the height is preferably increased from the inner side to the outer side.

On the other hand, the center of the connecting plate 434 of the helical fan 43, the metal bushing 436, which is fixedly coupled to the end of the rotary shaft 431 is fixedly installed. The metal bushing 436 prevents wear of the portion coupled to the rotating shaft 431 when the rotating shaft 431 rotates at a high speed, and serves to stably couple the rotating shaft 431 to the connecting plate 434. do.

The metal bushing 436 may be integrally fixed to the connecting plate 434 by insert injection. Alternatively, the metal bushing 436 may be inserted into the center of the connecting plate 434, and then fixed by using a separate bracket or the like from the outside of the metal bushing 436 or by a forced press.

The spiral fan configured as described above has an advantage of further reducing noise when the fan is rotated because the inner side of the lower end of the blade 433 which generates turbulent noise without substantially supplying energy to the fluid is cut to form an empty space. .

As described above, according to the present invention, since the spiral fan that blows air creates a flow characteristic of blowing air in the axial direction, there is almost no restriction on the installation position of the blower fan, and a large amount of air can be obtained with a small size. Miniaturization and slimming can be realized by reducing the overall size of the conditioner, and various types of air conditioners can be manufactured, such as a cabinet having a rectangular parallelepiped or a cylindrical shape, and the manufacturing cost can be reduced due to the easy manufacturing.

In addition, since the uniform amount of air can be obtained when the spiral fan is rotated in the forward and reverse directions, it is possible to uniformly discharge the air in both up and down directions of the air conditioner.

In addition, when the air conditioner of the present invention is inclined to install the support member for supporting the spiral fan in the cabinet, it is possible to obtain the effect of reducing the noise caused by the blowing air.

In addition, in the case of forming the blower fan by configuring the axial fan in multiple stages, it is possible to increase the static pressure while blowing air in the axial direction, thereby reducing the size of the entire air conditioner system and improving performance.

Claims (36)

A cabinet having a plurality of air passages through which air is sucked and discharged; A heat exchanger installed in the cabinet; A rotating shaft vertically installed in the cabinet, an elongated cylindrical hub fixed to the rotating shaft, and a spiral blade formed on the outer circumferential surface of the hub by drawing a spiral trajectory along the axial direction. A spiral fan configured to forcibly blow air; A driving motor coupled to a lower end of the rotating shaft at a lower portion of the helical fan to rotate the rotating shaft in one or two directions; And a motor support member for supporting the drive motor in the cabinet. The air conditioner of claim 1, further comprising an upper support member installed on an upper side of the spiral fan to rotatably support an upper end of a rotation shaft of the spiral fan. The cabinet of claim 2, wherein the upper support member includes a bearing portion rotatably coupled to an upper end of the rotating shaft, a plurality of supports formed to extend outwardly from the bearing portion, and fixed to an outer end of the support. Air conditioner, characterized in that consisting of a fixed portion fixed to the inner wall surface of the. The air conditioner according to claim 3, wherein the support is inclined upwardly outward from the bearing part. According to claim 3, wherein the fixing portion is formed to connect the outer end of the bar-shaped first fixing bracket formed to connect each outer end of the one of the plurality of supports and the first fixing bracket, the outer end of the other support An air conditioner, characterized in that consisting of a bar-shaped second fixing bracket. The cabinet of claim 1, wherein the motor support member includes a motor mounting portion to which the lower end of the driving motor is fixed, a plurality of supports formed to extend outwardly from the motor mounting portion, and fixed to an outer end of the support. An air conditioner comprising a fixed part fixed to a wall surface. The air conditioner of claim 6, wherein the motor mounting part is formed with a concave motor fixing groove so that the lower end of the driving motor is inserted into and coupled to the motor mounting part. The air conditioner according to claim 7, wherein a vibration absorbing packing material of a flexible material is installed at an inner circumference of the motor fixing groove and fitted with an outer circumferential surface of the lower end of the driving motor. The method of claim 6, wherein the fixing portion is formed to connect the outer end of the bar-shaped first fixing bracket formed to connect each of the outer ends of the one of the plurality of supports and the other of the other supports on the opposite side of the first fixing bracket An air conditioner, characterized in that consisting of a bar-shaped second fixing bracket. 7. The air conditioner of claim 6, wherein the support has a circular cross section. The air conditioner according to claim 1, further comprising a cylindrical fan housing installed to surround an outer portion of the spiral fan. 12. The air conditioner of claim 11, wherein the fan housing has an extension portion having a larger diameter from a middle portion to a lower portion and an upper portion. The air conditioner of claim 12, wherein the extension of the fan housing is curved in a predetermined curvature. The air conditioner according to claim 12 or 13, wherein the fan housing has a straight middle portion between the extension portions. The air conditioner according to claim 11 or 12, wherein the fan housing is formed to be symmetrically divided into two parts of the first fan housing and the second fan housing about a spiral fan. 16. The air conditioner of claim 15, wherein each corner portion of the first and second fan housings is installed to be in contact with each inner wall of the cabinet. The air conditioner of claim 1, wherein the driving motor is installed such that an upper portion thereof is led into the hub of the spiral fan. The air conditioner according to claim 1, wherein the spiral fan is divided into a plurality of up and down and formed in multiple stages. The air conditioner of claim 1, wherein the cabinet is formed in a cylindrical shape. The air conditioner of claim 1, wherein the heat exchanger is installed in a V shape at a lower portion of the cabinet. The air conditioner according to claim 1, wherein the blades of the helical fan have upper and lower portions formed longer by a predetermined length than upper and lower ends of the hub. 22. The air conditioner of claim 21, wherein the blade has a shape cut out from an inner side portion which is in contact with a lower end portion of the hub to an outer tip portion of the lower end portion. 23. The air conditioner according to claim 21 or 22, further comprising a connecting plate formed inside the hub and fixedly coupled to an upper end of the rotating shaft. 24. The air conditioner of claim 23, further comprising a plurality of reinforcing ribs extending radially perpendicularly to the connecting plate. 25. The air conditioner of claim 24, wherein the reinforcing ribs are symmetrically formed on the upper and lower surfaces of the connecting plate. 24. The air conditioner according to claim 23, further comprising a metal bushing fixedly installed at the center of the connecting plate and fixedly coupled to an end of the rotary shaft. 23. The air conditioner according to claim 21 or 22, wherein the blade has an 'S' cross section. 28. The air conditioner of claim 27, wherein the blade has an arc cross section with the tip portion extending from the top to the bottom. A cabinet having a plurality of air passages through which air is sucked and discharged; A heat exchanger installed in the cabinet; A rotating shaft installed vertically in the cabinet; A plurality of axial flow fans fixed at regular intervals and spaced apart from the rotation shaft; A driving motor coupled to a lower end of the rotating shaft to rotate the rotating shaft in one or two directions; And a motor support member for supporting the drive motor in the cabinet. The air conditioner of claim 1, further comprising an upper support member rotatably supporting the upper end of the rotating shaft. 31. The cabinet of claim 30, wherein the upper support member includes a bearing portion to which the upper end of the rotating shaft is rotatably coupled, a plurality of supports formed to extend outwardly from the bearing portion, and fixed to an outer end of the support. Air conditioner, characterized in that consisting of a fixed portion fixed to the inner wall surface of the. 32. The air conditioner of claim 31, wherein the support is inclined upwardly outward from the bearing portion. 30. The air conditioner of claim 29, further comprising a fan housing installed to surround an outer portion of the axial fan. 30. The apparatus of claim 29, wherein the motor support member includes a motor mounting portion to which the lower end of the driving motor is fixed, a plurality of supports formed to extend outwardly from the motor mounting portion, and fixed to an outer end of the support. An air conditioner comprising a fixed part fixed to a wall surface. A cabinet having a plurality of air passages through which air is sucked and discharged; A heat exchanger installed in the cabinet; A rotating shaft installed vertically in the cabinet, an elongated cylindrical hub fixed to the rotating shaft, and a spiral trajectory formed along an axial direction on an outer circumferential surface of the hub, the upper and lower portions having a predetermined length than the upper and lower portions of the hub. A spiral fan formed of an elongated spiral blade and a connecting member formed inside the hub to be fixedly coupled to an upper end of the rotating shaft, the spiral fan configured to forcibly blow air in a vertical axial direction of the cabinet; A fan housing installed to surround an outer portion of the spiral fan; A driving motor coupled to a lower end of the rotating shaft at a lower portion of the helical fan to rotate the rotating shaft in one or two directions; And a motor support member for supporting the drive motor in the cabinet. 36. The method of claim 35, wherein the connecting member of the helical fan comprises a connecting plate horizontally installed inside the hub, and a metal bushing fixed to the center portion of the connecting plate and coupled to the upper end of the rotating shaft while being inserted. Air conditioner.