KR100925585B1 - Indoor unit of air-conditioner - Google Patents

Abstract

The present invention relates to an indoor unit for a frame type air conditioner that sucks indoor air to the front to generate cold air, and then discharges it to both sides and a bottom surface, and particularly, a frame type that can increase the pressure of a discharge flow discharged from a thin case. It relates to an indoor unit for an air conditioner.

The indoor unit for the frame-type air conditioner according to the present invention has a thin case having an inlet at the front and a discharge port formed at both sides and a bottom thereof, and a turbo fan built into the case to discharge the air sucked into the inlet to the outlet. And installed in the inner lower corner of the case to guide the air blown by the turbo fan to the discharge port, the distance from the turbo fan to increase the pressure of the discharge flow 3 to 10% of the diameter of the turbo fan Since it is made of a holding air guide to increase the pressure of the discharge flow so that the cold air is blown farther.

Air Conditioner, Indoor Unit, Frame Type, Case, Air Guide, Turbo Fan

Description

Indoor unit for frame type air conditioner {INDOOR UNIT OF AIR-CONDITIONER}

1 is a perspective view showing a typical frame air conditioner,

2 is an exploded perspective view illustrating an indoor unit for a frame type air conditioner according to the present invention;

Figure 3 is a front view showing the installation structure of the turbo fan in the case body in the indoor unit for a frame type air conditioner according to the present invention,

4 is a graph showing the noise according to the distance between the first and second air guide and the turbo fan installed in the case body in the present invention.

<Explanation of symbols on main parts of the drawings>

10: case 12: air filter

14a, 14b, 14c: discharge grill 20: evaporator

22: drain fan 30: turbo fan

32: Hub 34: Shroud

36: blade 40: motor

42: motor shaft 44: elastic material

46: motor support 50: orifice

52: guide hole 54: control box

56: Operation Button P: Front Panel

A1, A2: 1st, 2nd air guide A3: Upper air guide

The present invention relates to an indoor unit for a frame type air conditioner that sucks indoor air to the front to generate cold air, and then discharges it to both sides and a bottom surface, and particularly, a frame type that can increase the pressure of a discharge flow discharged from a thin case. It relates to an indoor unit for an air conditioner.

In general, an air conditioner is a device for cooling / heating an indoor space through a heat exchange effect of a refrigerant circulating along a compressor, a condenser, an expansion means, and an air passing through a condenser or an evaporator. Including an outdoor unit installed in the outdoor space, and an indoor unit installed in the indoor space including an evaporator, the outdoor unit and the indoor unit are installed to be connected to each other by a refrigerant pipe.

Such air conditioners can be classified in various ways according to the installation position of the indoor unit, a stand type installed to stand in an indoor space, a wall hanging type installed to hang on an indoor wall, or a ceiling type installed to be suspended or embedded in an indoor ceiling. Divided into the back.

In particular, in order to make the indoor unit installed in the indoor space more beautiful in terms of design, a front panel drawn with various pictures is installed on the front of the thin rectangular parallelepiped case, and a frame type with an evaporator and a turbo fan is built in the inside thereof. It is marketed.

Specifically, looking at the configuration of the indoor unit for the frame-type air conditioner, the front panel is installed to open and close the front of the case is open, the inlet is formed between the case and the front panel at the same time the discharge port on both sides and bottom of the case Is formed, the inside of the case is installed so that the evaporator, the turbo fan and the motor overlap, an orifice is installed to guide the flow of air between the evaporator and the turbo fan.

At this time, the lower end of the front panel is hinged to the open front of the case to open and close the upper end of the front panel at a predetermined angle to suck up the indoor air, and each of the discharge port formed on both sides and the bottom surface of the case The discharge grill is installed to adjust the discharge wind direction.

In particular, a variety of guides are installed in the case to guide the air blown in the radial direction as the turbo fan is operated. An air guide for guiding discharge flow to each discharge grill side is installed at a lower edge portion of the case.

Accordingly, as the turbo fan is operated, indoor air is sucked axially through the intake port, and the indoor air is cooled through heat exchange with a refrigerant while passing through the evaporator, and then radially through the turbo fan. It flows and is guided by each air guide and discharged through the discharge grille at each discharge port side.

In the indoor unit for the frame type air conditioner as described above, the discharge flow rate and the noise depend not only on the performance of the turbo fan itself but also on the discharge flow path structure, and more specifically, the air installed inside the case to guide the discharge flow blown by the turbo fan. The shape or installation position of the guide has a great influence, and thus it is necessary to properly adjust the shape and installation position of the air guide so as to increase the discharge flow rate and reduce the noise.

The present invention has been made to solve the above problems of the prior art, it provides a frame-type air conditioner indoor unit that can reduce the noise while increasing the discharge flow rate by changing the shape and installation position of the air guide installed inside the case Its purpose is to.

The indoor unit for the frame type air conditioner according to the present invention for solving the above problems is a thin case having a discharge port formed at both sides and a bottom surface at the same time the suction port is formed on the front surface, and the air sucked into the suction port is built into the case The turbo fan is discharged to the discharge port, and installed in the lower inner corner of the case to guide the air blown by the turbo fan to the discharge port, the space between the turbo fan so as to increase the pressure of the discharge flow It consists of an air guide that keeps 3-10% of the diameter.

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

1 is a perspective view showing a typical frame type air conditioner, Figure 2 is an exploded perspective view showing an indoor unit for a frame type air conditioner according to the present invention.

The indoor unit for the frame type air conditioner according to the present invention is installed to be connected by the outdoor unit 200 and the refrigerant pipe 300 as shown in FIGS. 1 and 2, and the outdoor unit 200 is a refrigerant inside the case 210. It is configured to be provided with a blower fan 220 and a motor for accommodating the compressor, the condenser, the expansion means is circulated at the same time to blow the outdoor air to pass around the condenser, the indoor unit 100 is an evaporator 20 through which the refrigerant is circulated ) And a turbo fan 30 and a motor 40 for blowing the indoor air to pass through the evaporator 20 around the same.

Specifically, the indoor unit 100 has a thin case 10 having a front surface opened to form a suction port and discharge ports formed at both sides and a bottom surface thereof, and an evaporator 20 having a refrigerant circulated in the case 10. And a turbo fan 30 and a motor 40 positioned on a rear surface of the evaporator 20 to suck the indoor air from the suction port and pass the evaporator 20 and then discharge the discharged air to the discharge port. An orifice 50 positioned between the turbofan 30 and guides the cool air that has passed through the evaporator 20 to be sucked in the axial direction of the turbofan 30, and a suction port of the case 10. The lower end is connected to the hinge is configured to include a front panel (P) installed to open and close at a set opening angle.

Here, the case 10 is formed in a thin rectangular parallelepiped shape in which the front surface is opened to form a receiving space for various components therein.

At this time, the front panel (P) is installed to open and close the front panel (P) so that not only the internal components can be seen on the front of the case (10) but also block the noise. On the inner front side of the case, an air filter 12 and a dust collector (not shown) are installed to filter dust from indoor air, and the air filter 12 and the dust collector are detachably mounted to enable cleaning.

Of course, the air filter 12 is installed to be slidably inserted between the guide protrusions (not shown) formed on both inner sides of the front surface of the case 10 and is operated to filter foreign matter such as dust from the intake air. It is installed to be fixed to the front of the air filter 14 is operated to collect dust and the like when the power supply.

In addition, the discharge grills 14a, 14b, and 14c are installed on both side surfaces and the bottom surface of the case 10 so that the cool air is discharged through the discharge grilles 14a, 14b, and 14c. do.

Next, the evaporator 20 is connected to the compressor, condenser, expansion means of the outdoor unit to configure a refrigeration cycle, a plurality of fins are installed in the refrigerant pipe is installed inside the front of the case 10, the The refrigerant passing through the refrigerant pipe causes heat exchange with the indoor air by a plurality of fins to generate cold air.

Of course, the evaporator 20 is formed in a thin rectangular parallelepiped shape so that the evaporator 20 may be installed inside the case 10, and the front shape is formed in a square shape like the case 10.

In addition, a drain pan 22 is installed below the evaporator 20 to collect the condensed water formed on the surface of the evaporator 20 even when the condensed water flows down, and the drain pan 22 has a separate drain hose connected to the outside. C) is installed to drain the condensate to the outside.

Next, the turbo fan 30 is to suck the indoor air in the axial direction to discharge the radial direction so as to pass through the evaporator 20, but the thickness is thin so that it can also be installed inside the case (10) On the other hand, it is preferable to form a larger diameter in order to increase the suction wind direction.

At this time, the turbo fan 30 is positioned so as to be spaced apart in the center of the disc-shaped hub 32 and the hub 32 in the axial direction so as to be connected to the motor is gentle in the axial direction to guide the suction flow. A ring-shaped shroud 34 and a plurality of blades 36 are arranged at regular intervals in the circumferential direction between the hub 32 and the shroud 34, wherein the shroud 34 ) Guides the suction flow in the axial direction, while the hub 32 and the blade 36 guide the discharge flow in the radial direction.

In addition, the motor 40 is installed on the rear side of the turbo fan 30 so that the motor shaft 42 is fitted to the hub 32 to transmit power to the turbo fan 30, the motor shaft An elastic material 44 is installed between the 42 and the hub 32 to absorb the vibration as well as buffer the power transmission.

Of course, the turbo fan 30 is installed so that the shroud 34 faces the front of the case 10, and the motor 40 is a motor support 46 on the inner rear of the case 10. It is installed to be fixed by).

Next, the orifice 50 has a guide hole 52 formed in a convex ring shape at the center so as to guide suction air to the center of the turbo fan 30 so that turbulence does not occur, and portions other than the guide hole 52 are formed. Is formed flat to partition the cold air sucked into the turbo fan 30 and the cold air discharged through the turbo fan 30.

At a main price, a control box 54 for controlling the operation of the turbo fan 30 and the front panel P is installed on the front side of the orifice 50, and the motor for driving the turbo fan 30 ( 40) and the power supplied to the step motor (not shown) to open and close the front panel P at a set angle, and also controls the power supplied to the dust collector.

Of course, the control box 54 is configured to be directly connected to the various operation buttons 56 so that the user can directly operate the operation of the indoor unit 100, or to receive an operation control signal from the remote control itself, etc. Control the operation of the various components, and further connected to the display unit (not shown) installed to be exposed to the external display to display the operating state of the indoor unit 100 directly through the display unit.

Next, the front panel P is hinged (not shown) formed on both sides of the lower end is hinged to the front lower side of the case 10, the hinge shaft of the front panel (P) is installed so as to be connected to the step motor As the step motor is operated, an upper end of the front panel P may be automatically opened and closed from the case 10.

At this time, the front panel (P) is located with a gap from the front of the case 10 so as not to interfere with the front of the case 10, even if opened and closed around the lower end.

In addition, the step motor for opening and closing the front panel (P) is also controlled by the control box 54, the front panel (P) so as to minimize the noise while maintaining a predetermined suction flow rate It is opened and closed at a predetermined maximum opening angle from the front of the case 10, such that the maximum opening angle of the front panel (P) is opened and closed larger as the suction flow rate increases in proportion to the rotational speed of the turbo fan 30. Adjusted.

Of course, the front panel (P) is operated to open from the front of the case 10 when the turbo fan 30 is operated so that the indoor air is sucked, while the turbo fan 30 is not in operation in consideration of the aesthetics The case 10 is operated to be closed from the front to completely block the front of the case 10.

Accordingly, as the front panel P is opened and the turbo fan 30 is operated at the same time, indoor air is sucked between the front panel P and the front of the case 10, and the heat exchanger passes through the evaporator 20. After cooling through the action, it is sucked in the axial direction of the turbo fan 30 is discharged in the radial direction, and the discharge flow discharged from the turbo fan 30 passes through each discharge grill (14a, 14b, 14c) While being dispersed again to the room is discharged.

Figure 3 is a front view showing the installation structure of the turbo fan to the case body in the indoor unit for the frame-type air conditioner according to the present invention, Figure 4 is a gap between the first and second air guide and the turbo fan installed in the case body in the present invention The noise along is a graph.

As such, in order to guide the discharge flow discharged by the turbo fan 30 to the discharge grills 14a, 14b and 14c, three air guides are provided inside the case 10 as shown in FIG. A1, A2, A3) are provided or integrally formed.

In detail, first and second air guides A1 and A2 are integrally formed at the inner lower edges of the case 10, and the first and second air guides A1 and A2 are connected to the turbo fan 30. While formed to have an opposite inclined surface, the upper air guide (A3) is screwed on the inner upper portion of the case 10, the upper air guide (A3) is a curved surface with a predetermined distance from the turbo fan (30) It is formed to have.

In addition, the inclination angles of the first and second air guides A1 and A2 are determined according to the rotation direction of the turbo fan 30, and the inclination surfaces of the first and second air guides A1 and A2 are different from each other. It is preferable that the interval between the turbo fan 30 is formed closer to the rotation direction of the turbo fan 30, wherein the discharge flow discharged from the turbo fan 30 is the first, second air guide Moving along the inclined surface of (A1, A2) is to be discharged in the pressure applied state to increase the speed of the discharge flow more and at the same time to increase the discharge air volume.

At this time, the first and second air guides (A1, A2) is to reduce the distance (L) with the turbo fan 30 through the repeated results as shown in Figure 4 in order to reduce the noise and increase the discharge air volume. It is preferable that the turbo fan 30 has a diameter of 3 to 10% (L / D). More preferably, as shown in FIG. 4, when L / D is 5 to 8%, noise may be minimized.

Of course, if the distance L between the first and second air guides A1 and A2 and the turbo fan 30 is too narrow, the discharge flow discharged from the turbo fan 30 is the first and second air. The flow path resistance between the guides A1 and A2 and the turbo fan 30 is large, thereby generating noise more and reducing the discharge air volume due to the flow loss due to the noise. The first and second air guides A1 When the distance L between the A2 and the turbo fan 30 is too wide, pressure is not applied to the discharge flow discharged from the turbo fan 30, thereby reducing the amount of discharge air.

Accordingly, the first and second air guides A1 and A2 may be formed to have a smaller distance L from the turbo fan 30 toward the rotation direction of the turbo fan 30. It is preferable that the space | interval L with 30 is formed so that it may have a set ratio with respect to the diameter D of the said turbofan 30. FIG.

In the above, the present invention has been described in detail by taking the indoor unit for the frame type air conditioner as an example based on the embodiment of the present invention and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

The indoor unit for the frame type air conditioner according to the present invention configured as described above has discharge ports formed on both sides and bottom of the case in which the evaporator and the turbo fan are built, and at the same time to guide the discharge flow discharged from the turbo fan to each discharge port. The air guide is formed separately in the air guide, each air guide is formed to have an inclined surface facing the turbo fan so that the inclined surface of each air guide closer to the rotational direction of the turbo fan closer to the space between the turbo fan, each air Since the inclined surface of the guide is formed at a predetermined interval with the turbo fan in proportion to the diameter of the turbo fan, the discharge flow discharged between each air guide and the turbo fan increases the speed of the discharge flow while increasing the discharge air volume while applying pressure. This has the advantage of reducing noise.

Claims (2)

A thin case having a suction port formed on the front surface and a discharge port formed on both sides and a bottom surface thereof; A turbo fan embedded in the case and configured to discharge air sucked into the suction port to the discharge port; It is installed in the inner lower corner of the case to guide the air blown by the turbo fan to the discharge port, so as to increase the pressure of the discharge flow, the distance (L) with the turbo fan of the turbo fan diameter (D) The first and second air guides to be 5-8%, Indoor unit for a frame type air conditioner, characterized in that consisting of an upper air guide installed on the inner upper portion of the case. The method of claim 1, The air guide is an indoor unit for a frame type air conditioner, characterized in that the inclined surface facing the turbo fan is closer to the turbo fan toward the rotation direction of the turbo fan.

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