KR20040015882A - The blower assembly of an air conditioner - Google Patents

Abstract

PURPOSE: A blowing unit of an integral type air conditioner is provided to change RPM of an outdoor fan connected to a rear side of a dual-axis motor to control outdoor wind volume. CONSTITUTION: A blowing unit(70) comprises a dual-axis motor(64) having a first shaft(64a) and a second shaft(64b) installed to a front side and a rear side thereof, respectively; an indoor fan(57) connected with the first shaft to receive rotary force from the dual-axis motor, and blowing indoor air; an outdoor fan(61) connected with the second shaft to receive rotary force from the dual-axis motor, and blowing outdoor air; and a transmission unit(68) installed between the second shaft and the outdoor fan to accelerate or decelerate RPM of the second shaft and transmit to the outdoor fan. The transmission unit comprises a rotary axis having one end inserted and fixed to a hub of the outdoor fan; a driven gear fixed to the other end of the rotary axis; a slave gear fixed to the second shaft to be engaged with the driven gear; and a supporting part supporting the rotary axis.

Description

Blower of integrated air conditioner {The blower assembly of an air conditioner}

The present invention relates to a blower of an integrated air conditioner, and more particularly, to a blower of an integrated air conditioner capable of accelerating / decelerating the speed of an outdoor fan connected to a rear of a double shaft motor.

In general, an air conditioner is a device that processes intake air and supplies it to a building or a room to maintain indoor air in a comfortable condition. A separate type or a split type in which an indoor unit and an outdoor unit are separated and installed on the indoor and outdoor sides, respectively An air conditioner, an indoor unit, and an outdoor unit are integrally formed, and are classified into a window type air conditioner installed in a window or a wall.

1 is a side cross-sectional view showing an integrated air conditioner according to the prior art, Figure 2 is an exploded perspective view showing a blower of the integrated air conditioner according to the prior art.

As shown in FIG. 1, the integrated air conditioner according to the related art includes a cabinet 2 having an inlet port 2a and an outlet port 2b through which outdoor air is absorbed / discharged, and a base coupled to a bottom surface of the cabinet 2. The barrier 5a is formed inside the case 5, which is formed of a fan 3 and a front panel 4 which is coupled to the front surface of the cabinet 2, and has an inlet port 4a and an outlet port 4b for inlet / outlet of indoor air. Is installed and divided into an indoor space (A) through which indoor air flows and an outdoor space (B) through which outdoor air flows, and various air conditioners and blowers are installed in the case (5).

Here, the air conditioner includes a compressor (not shown), a condenser 10, an expansion valve (not shown), and an evaporator 6 through which the refrigerant is circulated, and the blower 20 is shown in FIG. 2. As described above, an indoor fan 7 installed in the indoor space A to blow indoor air to the evaporator 6 side, and an outdoor fan installed in the outdoor space B to blow indoor air to the condenser 10 side. And a first shaft 14a connected between the indoor fan 7 and the outdoor fan 11 and connected to the indoor fan 7 and a second shaft connected to the outdoor fan 11. 14b) is composed of a biaxial motor 14 formed in front and rear.

The blower 20 is installed in front of the barrier 5a to guide air blown by the indoor fan 7 to the discharge port 4b of the front panel through the evaporator 10. The air guide 8 and the rear side of the barrier (5a) is installed so that the air blown by the outdoor fan 11 is guided to pass through the condenser 10 to the discharge port (2b) side of the cabinet Shroud 12 is further included.

In particular, the two-axis motor 14 is installed between the barrier 5a and the shroud 12, the first shaft 14a is connected to the indoor fan 7, the second shaft 14b Is fixed to a motor mount (not shown) fixed to the base fan 3 so as to be connected to the outdoor fan 11.

Therefore, when the two-axis motor 14 is operated, the first shaft 14a and the second shaft 14b are rotated at the same time to rotate the indoor fan 7 and the outdoor fan 11, the indoor fan ( 7) and indoor air are blown by the outdoor fan 11, respectively.

However, in order to improve the efficiency of the air conditioner, the amount of outdoor air blown to the condenser 10 side is required more than the amount of indoor air.

However, the blower of the integrated air conditioner according to the prior art is difficult to adjust the indoor air volume and the outdoor air volume because the indoor fan 7 and the outdoor fan 11 are connected to the two-axis motor 14 at the same rotational speed. There is a problem.

Therefore, in recent years, although a separate motor may be installed in the indoor fan 7 and the outdoor fan 11 according to the model of the air conditioner, it is difficult to develop and apply the product because the motors of the specifications required for each model must be mounted. There is a problem.

The present invention has been made to solve the above problems of the prior art, and provides a blower of an integrated air conditioner capable of accelerating / decelerating the rotational speed of an outdoor fan connected to the rear of both shaft motors to adjust the outdoor air volume. Its purpose is to.

1 is a side cross-sectional view showing an integrated air conditioner according to the prior art,

Figure 2 is an exploded perspective view showing a blower of the integrated air conditioner according to the prior art,

3 is a side cross-sectional view showing an integrated air conditioner according to the present invention;

Figure 4 is an exploded perspective view showing a blower of the integrated air conditioner according to the present invention.

<Explanation of symbols on main parts of the drawings>

56: evaporator 57: indoor fan

60: condenser 61: outdoor fan

64: biaxial motor 64a: first shaft

64b: second shaft 68: shifting means

68a: rotating shaft 68b: driven gear

68c: driven gear 68d: support

68e: radial bearing 68f: bracket

70: blower

The blower of the integrated air conditioner according to the present invention for solving the above problems is a biaxial motor with a first shaft and a second shaft rotatably installed in front and rear, and connected to the first shaft to receive a rotational force from the biaxial motor An indoor fan for supplying and blowing indoor air, an outdoor fan connected to the second shaft, and supplied with a rotational force from the two-axis motor to blow outdoor air, and installed between the second shaft and the outdoor fan to provide the second shaft. It consists of a transmission means for accelerating or decelerating the rotational speed of the transmission to the outdoor fan side.

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

Figure 3 is a side sectional view showing an integrated air conditioner according to the present invention, Figure 4 is an exploded perspective view showing a blower of the integrated air conditioner according to the present invention.

As shown in FIG. 3, the integrated air conditioner according to the present invention is coupled to a cabinet 52 having a suction port 52a and a discharge port 52b through which outdoor air is sucked and discharged, and a bottom surface of the cabinet 52. A barrier is formed inside the case 55 formed of a base fan 53 and a front panel 54 which is coupled to the front surface of the cabinet 52 and has an inlet port 54a and a discharge port 54b that suck and discharge indoor air. 55a) is installed and divided into an indoor space A in which indoor air flows and an outdoor space B in which outdoor air flows, and a compressor (not shown) and a condenser 60 in which a refrigerant is circulated inside the case 55. ), An expansion valve (not shown), and an air conditioner composed of an evaporator 56 is installed, and a blower 70 for controlling and blowing the air volume of indoor air and outdoor air between the evaporator 56 and the condenser 60. ) Is installed.

Here, the blower 70 is installed between the evaporator 56 and the air guide 58 as shown in Figure 4 and the indoor fan 57 for blowing the indoor air to the evaporator 56 side, and An outdoor fan 61 installed between the condenser 60 and the shroud 62 to blow outdoor air toward the condenser 60, a first shaft 64a connected to the indoor fan 57, and the outdoor The second shaft 64b protruding toward the fan 61 is installed between the two-axis motor 64 rotatably installed in front and rear, and between the second shaft 64b and the outdoor fan 61, and the second shaft 64b. It consists of a transmission means 68 for accelerating or decelerating the rotational speed of the transmission to the outdoor fan 61 side.

The shift means 68 includes a rotating shaft 68a having one end fixed to a hub of the outdoor fan 61, a driven gear 68b fixed to the other end of the rotating shaft 68a, and the driven gear ( And a driven gear 68c fixed to the second shaft 64b to engage with 68b, and a support 68d for rotatably supporting the rotation shaft 68a.

Of course, in order to increase the efficiency of the air conditioner so that the outdoor air volume is greater than the indoor air volume, the rotation speed of the rotation shaft 68a, that is, the outdoor fan 61 is higher than the rotation speed of the second shaft 64b. The acceleration ratio between the driven gear 68c and the driven gear 68b is determined, and the dimensions of the driven gear 68c and the driven gear 68b are determined accordingly.

In addition, even if the same outdoor fan 61 is used, driven gear 68c and driven gear 68b having an acceleration ratio can be used according to the required outdoor air volume according to the product, so it is easy to apply when changing the model.

Here, the support portion 68d has a radial bearing 68e fixed around the rotation shaft 68b so that the rotation shaft 68b is rotatable, and one end thereof to support the radial bearing 68e. The bracket 68f is fixed to the bearing 68e and the other end is fixed to the rear of the double shaft motor 64.

Looking at the operation of the present invention configured as described above are as follows.

First, when the compressor and the double shaft motor 64 are operated, the refrigerant circulates along the compressor, the condenser 60, the expansion valve, and the evaporator 56, and the first shaft 64a connected to the double shaft motor 64. And the second shaft 64b are rotated at the same rotational speed.

Therefore, as the first shaft 64a is rotated, the indoor fan 57 connected to the first shaft 64a is rotated, and the indoor air is blown to the evaporator 56 side, and passes through the evaporator 56. The air cools and is discharged again to the indoor side.

As the second shaft 64b is rotated, a driven gear 68c fixed to the second shaft 64b and a driven gear 68b geared with the driven gear 68c are rotated, thereby rotating. The outdoor fan 61 is accelerated and transmitted to the rotating shaft 68a, and the outdoor fan 61 fixed to the rotating shaft 68a is rotated at a higher speed than the indoor fan 57 so that outdoor air is blown to the condenser 60 side, and the condenser ( The air passing through 60) condenses the refrigerant and is discharged again to the outdoor side.

Of course, since the outdoor fan 61 is rotated at a higher speed than the indoor fan 57 to increase the amount of outdoor air, the temperature of the refrigerant passing through the condenser 60 can be further lowered, and further, the heat exchange of the air conditioner. The efficiency can be improved.

The blower of the integrated air conditioner according to the present invention is configured as described above by installing a pair of gears between the second shaft installed in the rear of both shaft motor and the rotary shaft connected to the outdoor fan to adjust the outdoor air volume of the two-axis motor Since the rotation speed of the outdoor fan installed at the rear side can be accelerated / decreased, there is an advantage that the indoor air volume and the outdoor air volume can be adjusted by using the indoor fan and the outdoor fan connected to both shaft motors.

In addition, even if the model of the air conditioner is changed, even if the dual-axis motor of a specific specification can be adjusted because the indoor air volume and the outdoor air volume has the advantage of easy product development and application.

Claims (3)

A biaxial motor having a first shaft and a second shaft rotatably installed in front and rear, An indoor fan connected to the first shaft and supplied with a rotational force from the biaxial motor to blow indoor air; An outdoor fan connected to the second shaft and supplied with a rotational force from the biaxial motor to blow outdoor air; The blower of the integrated air conditioner is provided between the second shaft and the outdoor fan made of a transmission means for accelerating or decelerating the rotational speed of the second shaft to the outdoor fan side. The method of claim 1, The shift means may include a rotating shaft having one end connected to a hub of the outdoor fan; A driven gear fixed to the other end of the rotating shaft; A driven gear fixed to the second shaft to engage the driven gear; Blower of the integrated air conditioner, characterized in that consisting of a support for rotatably supporting the rotating shaft. The method of claim 2, The support unit is a blower of the integrated air conditioner, characterized in that consisting of a radial bearing fixed to the rotating shaft, and a bracket fixed to one side of the two-axis motor to support the radial bearing.