KR20030018253A - Indoor unit for air conditioner - Google Patents

Abstract

PURPOSE: An indoor unit of a split type air conditioner is provided to reduce manufacturing cost. CONSTITUTION: An indoor unit includes a base plate(96); a fan assembly including a turbo fan(60), and installed in the base plate to provide power for introducing and discharging air; a cylindrical front case(30) forming a space therein together with the base plate and the exterior; a suction part(35) formed around one end of the front case to be a path through which air in a space to be air-conditioned is introduced by the fan assembly; an indoor heat exchanger(50) installed between the suction part and the fan assembly to allow air introduced from the outside to exchange heat; and a discharge part(36) formed around the other end of the front case to discharge air having passed the indoor heat exchanger to the space to be air-conditioned.

Description

Indoor unit for separate air conditioner {Indoor unit for air conditioner}

The present invention relates to an air conditioner, and more particularly, to an indoor unit of a separate air conditioner having a three-sided suction passage and a three-sided discharge passage.

In general, the cooling of an air conditioner includes the steps of compressing a refrigerant gas at a high temperature and a high pressure by a compressor, and decompressing the refrigerant in a low temperature liquid and gas state while passing through the expansion valve. The low-temperature liquid and gaseous refrigerant passing through the valve is evaporated through the evaporator to take the heat of the surroundings to maintain the external temperature at a low temperature, and then the refrigerant cycle consisting of flowing into the compressor again.

The type of air conditioner composed of such a refrigerant cycle is largely divided into an integrated type and a separate type. In consideration of noise problems and installation environment, a separate type air conditioner is widely used.

The separate air conditioner includes an indoor unit installed indoors and an outdoor unit installed outdoors. The indoor unit performs cooling by an evaporator through which cool refrigerant flows, and a blowing fan that cools hot indoor air sucked from the suction port through the evaporator and blows it to the discharge port. The outdoor unit includes a compressor for compressing the refrigerant gas flowing through the evaporator of the indoor unit, a condenser that gradually dissipates the compressed refrigerant into a liquid phase, and sucks and discharges outdoor air to dissipate the condenser. And an expansion valve configured to depressurize the refrigerant radiated through the condenser.

Figure 1 shows the main configuration of the indoor unit of the separate type air conditioner according to the prior art. According to this, the chassis 1 constitutes the rear appearance of the indoor unit, and the front panel 3 constitutes the exterior appearance of the indoor unit.

The upper part of the front panel 3 is formed with a discharge port (3a) for discharging the air heat-exchanged inside the indoor unit to the space for air conditioning again. And the front (4) is attached to the lower portion. The front 4 prevents internal parts from being exposed to the outside while being a passage through which air in the space for air conditioning is suctioned.

On the other hand, in the inner space formed by the chassis 1 and the front panel 3, various components for forming an indoor unit are installed. There is an indoor heat exchanger (7) for heat-exchanging the air sucked in the space for air conditioning, and the top of the indoor heat exchanger (7) is provided with a cross fan (8) for providing a driving force for sucking the air.

A guide 9 is installed at the rear of the cross pan 8 to guide the flow of air generated by the cross pan 8 to the front panel discharge port 3a. And cross pan

(8) In the front, there is provided a discharge unit 13 for controlling the air flow discharged to the space for air conditioning through the discharge port 3a in the vertical and horizontal directions.

Such a discharge unit 13 is a wind direction controller installed in front of the cross fan (8)

15 and the motor 17 is connected to the side of the wind direction regulator 15. The wind direction controller 15 adjusts the left and right directions of the air discharged from the cross fan 8 by the motor 17.

The grill 21 connected by the link 19 is installed in the discharge port 3a in front of the wind direction controller 15, and a stepping motor 23 is connected to one end of the grill 21.

On the other hand, the mounting plate 23 is provided inside the indoor unit in order to mount the components including the cross fan 8, a filter for purifying the air between the front (4) and the indoor heat exchanger (7) where the air is sucked ( 25) is mounted.

The operation of the air conditioner in the prior art having such a configuration will be described with reference to the drawings.

As the refrigeration cycle operates, a refrigerant having a relatively low temperature flows into the indoor heat exchanger 7, and the air of the space for air conditioning is introduced through the front 4 while the cross fan 8 is driven. The filter 25 passes through and is purified. The purified air reaches the indoor heat exchanger 7 mounted on the mounting plate 23.

And, the heat exchange while passing through the indoor heat exchanger (7)

The air volume and the wind direction are controlled by the discharge unit 13 via the discharge unit 13 and discharged to the space for air conditioning through the discharge port.

At this time, the wind direction of the air discharged through the discharge unit 13 by the wind direction controller 15 and the grill 21 is adjusted. That is, the left and right directions of the air discharged by the wind direction controller 15 is rotated left and right by the drive of the motor 17 is adjusted, and the grill 21 is discharged by rotating up and down by the stepping motor 23 The up and down direction of the air to be adjusted.

However, the prior art as described above has the following problems.

The indoor unit of the air conditioner having the above configuration is relatively small because the air suction and blowout directions are sucked through the front 4 formed on the front side and discharged to the discharge port 3a formed on one side as shown in FIG. Only the air in the area becomes air conditioning.

In particular, in the discharge of the cooled air, the air is discharged in one direction toward the front surface, and thus, the wind direction control means is required when cooling a specific portion.

The wind direction control using the wind direction control means uses a method of moving the wind direction controller 15 left and right using the motor 17 and a method of adjusting the grill 21 up and down using the stepping motor 23. .

However, such a wind direction control only cools a specific part, and a problem occurs in that the space in which the air conditioner is installed is not uniformly cooled.

It is therefore an object of the present invention to solve the problems of the prior art as described above, and to provide an air conditioner configured to suck air in a plurality of directions and to discharge in a plurality of directions.

1 is an exploded perspective view showing a main portion of a conventional separate air conditioner indoor unit.

Figure 2 is a state diagram showing the intake and exhaust path of the indoor unit of the conventional separate air conditioner.

Figure 3 is an exploded perspective view showing the main components of the detachable air conditioner indoor unit according to an embodiment of the present invention.

Figure 4 is a perspective view showing a lower assembly state of the air conditioner indoor unit according to the embodiment of the present invention.

Figure 5 is a cross-sectional view showing a flow path of air in the indoor unit of the air conditioner according to the embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

30.Frontcase32. Flat part

34. Curved side 35. Suction

36. Discharge part 37. Bottom

38. Housekeepers 39. Drain hole

40. Top filter 50. Indoor heat exchanger

60.Turbo Fan 70. motor

71.Rotation axis 74. Fastener

80.Mount mount 84. Through

86 hollow part 88. Fastener

91. Fastening part 93. Through-hole

96. Base plate 100. Grill

The indoor unit of the separate type air conditioner according to the present invention for achieving the above object, a base assembly, a fan assembly which is mounted to the base plate and provides a driving force for sucking and discharging air, and the base plate and A tubular front case cooperating to form a space therein and constituting an exterior; a suction part formed around one end of the front case to be a passage through which air of a space for air conditioning is sucked by the fan assembly; And a heat exchanger installed between the suction unit and the fan assembly to heat exchange the air sucked from the outside, and formed around the other end of the front case to discharge the air passing through the heat exchanger back into a space for air conditioning. It consists of a discharge part.

The fan assembly comprises a turbofan.

The heat exchanger is installed in the inner space of the front case corresponding to the suction part and the discharge part, and is installed around the inner surface of the cylindrical front case.

The heat exchanger is formed to be inclined with respect to the horizontal plane.

The bottom surface of the front case corresponding to the lower side of the heat exchanger is provided with a collecting portion for collecting condensate.

A filter for purifying the air sucked is further provided between the suction unit and the heat exchanger.

The front case has a cylindrical shape having a plane for mounting on one side thereof, and the suction part is formed at a lower end thereof, and the discharge part is formed at an upper end thereof.

The heat exchanger is flat, and is inclined above the edge thereof.

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

Figure 3 shows the main configuration of the indoor unit of the separate air conditioner according to the embodiment of the present invention.

As shown, the front case 30 has a semi-cylindrical shape with an upper opening, and constitutes a bottom surface and a side appearance of the indoor unit. The side surface of the front case is composed of a flat portion 32 forming a flat shape and a curved side surface 34 having a predetermined curvature.

The lower end of the curved side 34 is formed with a suction part 35 having a plurality of vent holes for air suction. At the upper end of the curved side surface 34, a discharge portion 36 having a height slightly lower than the flat portion 32 is formed for exhausting air.

The lower surface 37 forming the bottom surface of the front case 30 is provided with a collecting portion 38 recessed downward to collect water droplets generated during the operation of the air conditioner. And, one side of the collecting portion is provided with a drain hole 39 for discharging the water collected in the collecting portion to the outside.

On the lower surface 37 of the front case adjacent to the suction part 35, two upward type filters 40 for air purification are mounted. The upward filter 40 forms a curved surface as shown, and is positioned on one side and the other side along the inner surface of the curved side surface 34 on the lower surface 37, respectively.

On the side on which the upward filter 40 is mounted, an indoor heat exchanger 50 for heat-exchanging the air sucked in the space for air conditioning is located. The indoor heat exchanger (50) is made of a side inclined at an angle upward in a rectangular shape in order to enlarge a contact area with air.

The upper part of the indoor heat exchanger (50) is provided with a turbo fan (60) for forming an air flow by sucking the air in the lateral direction and discharge to the side. The turbo fan 60 is one of the most efficient fans among the types of the fan that sucks air from one side and discharges it to the other side, and has a backward curver blade that curves backward in the rotational direction. Due to the blowing characteristics of the turbo fan 60, there is no structure for guiding the flow of air separately, thereby simplifying the overall configuration of the air conditioner.

A motor 70 for driving the turbo fan 60 is mounted on the turbo fan 60. The motor 60 is provided such that the rotation shaft 71 protrudes downward to rotate the turbo fan 60 coupled with the rotation shaft 71 with the operation of the motor 70. The motor 70 is provided with a fastening hole 74 on the side for mounting.

A motor mount 80 is provided to fasten the motor 70. The motor mount 80 is provided with a through hole 84 in a portion corresponding to the fastening hole 74 formed on the side of the motor 70, the hollow portion 86 is formed in the middle of the upper portion of the motor 70 Is inserted. In addition, the motor mount 80 has four legs formed at an upper portion thereof, and a fastening hole 88 is provided at each end thereof.

A fastening portion 91 is provided at a portion corresponding to the fastening hole 88 of the motor mount 80, and a base plate 96 having a through portion 93 formed at a position corresponding to the hollow portion 86. The base plate 96 constitutes an upper surface of the indoor unit according to the embodiment of the present invention.

The discharge part 36 formed on the upper side of the curved side surface 34 below the base plate 96 has a shape similar to that of the upward filter 40, and a grill 100 having a predetermined curvature is installed. The grill 100 adjusts the discharge direction of the air discharged through the discharge unit 36 up and down, and makes the components inside the indoor unit not visible from the outside.

The indoor unit of the air conditioner as described above is fixed to the base plate 96 is mounted on the upper wall. At this time, the motor 70 protruding upward through the base plate through-hole 93 has a height such that interference does not occur when mounted.

Hereinafter, the assembly order of the separate type air conditioner indoor unit according to an embodiment of the present invention will be described.

First, two upward type filters 40 are mounted on the lower surface 37 of the front case adjacent to the suction part 35. The mounting position of the upward filter 40 is mounted from one end of the flat portion 32 to the center of the curved side 34, and the other is mounted from the center of the curved side 34 to the other end of the flat portion 32. Is mounted until. As shown in FIG. 4, the suction part 35 is completely covered by the mounting of the upward filter 40 when viewed from the inside of the front case 30.

Then, the indoor heat exchanger 50 is installed to the inside where the upward filter 40 is mounted. The installation direction is such that the opening faces upward as shown in FIG. 3.

Next, two grills 100 are mounted on the discharge part 36 formed at the upper end of the curved side surface 34. Mounting of the grill 100 is also provided with one end and the other end of the flat portion 32 in the discharge portion 36 with respect to the center in the same manner as the comfort filter 40.

On the other hand, the fastening portion 91 of the base plate 96 constituting the upper surface and the fastening hole 88 of the motor mount 80 is located in communication with each other is fastened by a bolt. The motor mount through hole 84 and the motor fastening hole 74 communicate with each other and are fastened by bolts. By the fastening operation, the upper end of the motor 70 is inserted into the motor mount hollow 86 and the base plate through-hole 93 to protrude upward from the base plate 96.

After the assembly process, the turbo fan 60 is fastened to the rotary shaft 71 protruding downward from the motor 70. Then, the fan is turned by hand to check whether the turbo fan 60 is properly fastened, and the balance of the turbo fan 60 is checked during rotation.

Finally, the assembly of the air conditioner indoor unit according to the embodiment of the present invention is completed by coupling the base plate 96 to the front case 30.

The operation of the indoor unit of the air conditioner according to the embodiment of the present invention having the configuration and the assembly process and the air flow according thereto will be described with reference to FIG. 5.

When power is applied, the rotating shaft 71 of the one side that protrudes while the motor 70 rotates also rotates. The turbo fan 60 coupled to the rotary shaft 71 rotates to form an airflow from the lower side to the upper side.

Air in the space for air conditioning flows into the suction part 35 formed at the lower end of the curved side 34 by the operation of the turbo fan 60. The introduced air is purified by filtering impurities such as foreign substances while passing through the upward filter 40.

The air is an indoor heat exchanger into which a refrigerant of a relatively low temperature is introduced.

Heat exchanged while passing through the 50 and rises upward through the turbo fan 60, passes through the grill 100, and is discharged to the discharge portion 36 of the upper side of the curved side (34).

At this time, the grill 100 adjusts the wind direction of the air discharged through the discharge unit 36 up and down, the defrost water generated by the operation of the indoor heat exchanger 50 is the front case lower surface 37 Gathered in the collecting portion 38 formed in the discharge through the drain hole 39 to the outside.

As described above, the indoor unit of the separate type air conditioner according to the embodiment of the present invention includes a suction part 35 for sucking air at the lower end of the curved side surface 34 which forms three surfaces in the front case 30. The discharge part 36 for exhausting air is also formed on the upper three surfaces of the curved side surface 34, thereby making the air intake and exhaust. By this intake and exhaust structure, air is sucked in and exhausted in a relatively large area, so that the temperature of the space for air conditioning can be uniformly distributed.

In addition, in the related art, a louver 11 and a motor for operating the louver 11 are used in the discharge grill 10 to control the wind direction from side to side by exhausting only in one direction by three-sided ejection. The parts are eliminated, thereby reducing the manufacturing cost of the product.

In addition, the amount of air flow compared to the same power consumption than the conventional cross fan 8, the efficiency of air conditioning is improved due to the use of the turbo fan 60, which does not require a separate air guide.

Many other modifications based on the present invention will occur to those skilled in the art within the scope of the above.

As described above, according to the present invention, a space for air conditioning can be quickly and uniformly set to a set temperature by a flow path method of three-sided suction and three-sided discharge.

In addition, there is an effect that the cost of the product is reduced due to the reduction of the parts cost due to the reduction of the number of parts, and the reduction of the assembly process due to the relatively simple structure.

In addition, the use of a turbo fan increases the amount of air compared to the same power consumption, there is an effect that the air conditioning efficiency by the intake and exhaust air is smooth.

Claims (8)

Base plate, A fan assembly mounted to the base plate and providing a driving force for sucking and discharging air; A cylindrical front case cooperating with the base plate to form a space therein and constitute an appearance; A suction part formed around one end of the front case to become a passage through which air of a space for air conditioning is sucked by the fan assembly; A heat exchanger installed between the suction unit and the fan assembly to heat exchange the air sucked from the outside; Indoor unit of the separate air conditioner, characterized in that it comprises a discharge portion formed around the other end of the front case to discharge the air passing through the heat exchanger back to the space for air conditioning. The indoor unit of a separate air conditioner according to claim 1, wherein the fan assembly comprises a turbo fan. The air conditioner of claim 1 or 2, wherein the heat exchanger is installed in an inner space of the front case corresponding to the suction part and the discharge part, and is installed around the inner surface of the cylindrical front case. Indoor unit of the flag. The indoor unit of a separate air conditioner according to claim 3, wherein the heat exchanger is formed to be inclined with respect to a horizontal plane. The indoor unit of a separate air conditioner according to claim 1 or 3, wherein a bottom portion of the front case corresponding to the lower side of the heat exchanger is provided with a collecting portion for collecting condensate. The indoor unit of a separate air conditioner according to claim 5, further comprising a filter for purifying the air sucked between the suction part and the heat exchanger. The indoor unit of a separate air conditioner according to claim 1 or 6, wherein the front case has a cylindrical shape having a flat surface for mounting on one side thereof, and the suction part is formed at a lower end thereof, and the discharge part is formed at an upper end thereof. . 8. The indoor unit of a separate air conditioner according to claim 7, wherein the heat exchanger is flat and inclined upwardly at an edge thereof.