KR100714591B1 - Indoor unit for frame type 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 the air to both sides and the bottom, and particularly reduces the flow resistance by gently discharging the swirl flow blown to each discharge port. It relates to an indoor unit for a frame type 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 a plurality of louvers installed in the discharge port and arranged to be inclined in the swirl flow direction so as to guide the swirl flow blown by the turbo fan, thereby reducing noise by reducing flow resistance and blowing efficiency. Can be increased, and condensed water can be prevented from forming on each discharge grill.

Air Conditioner, Indoor Unit, Frame Type, Case, Discharge Grill, Louver, Turbo Fan, Swirl Flow

Description

Indoor unit for frame type air conditioner {INNER-DOOR 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;

3 and 4 are a perspective view and a bottom view showing a case body equipped with a discharge grill in the indoor unit for a frame type air conditioner according to the present invention.

<Explanation of symbols on main parts of the drawings>

10: case 12: air guide

14: air filter 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

G: discharge grill L: louver

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 the air to both sides and the bottom, and particularly reduces the flow resistance by gently discharging the swirl flow blown to each discharge port. It relates to an indoor unit for a frame type 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, the front panel drawn with various pictures is installed on the front side of the thin rectangular parallelepiped case, and a frame type with an evaporator and a turbo fan is developed inside. 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.

Of course, the discharge grill is composed of a plurality of louvers, each louver is installed so as to be arranged horizontally in each discharge port.

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 discharged through the discharge grill of each discharge port side.

As the turbo fan is rotated inside the thin case in the indoor unit for the frame type air conditioner as described above, the indoor air is sucked in the axial direction and discharged radially, thereby turning in the discharge flow due to the rotational force of the turbo fan and the resistance of the surrounding components. As the louvers of each discharge grill are installed so as to be independent of the swirl flow discharged in this way, the swirl flow hits the louvers of each discharge grill and acts as a flow resistance to generate noise. There is a problem that the steam is bound to the louvers of each discharge grill.

The present invention has been made in order to solve the above problems of the prior art, so that as the turbo fan operates inside the thin case, the air is sucked in the axial direction and discharged in the radial direction so as to smoothly discharge even if a swirl flow is generated. An object of the present invention is to provide an indoor unit for a frame type air conditioner that can reduce flow resistance.

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 A turbo fan for discharging to the discharge port, and a discharge grill is installed in the discharge port and the plurality of louvers are inclined in the swirl flow direction to guide the swirl flow blown by the turbo fan.

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, Figure 3 and Figure 4 is a discharge grill in the indoor unit for a frame type air conditioner according to the present invention The attached case body is a perspective view and a rear view.

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 front panel P is hinged at the lower end, and the upper end is opened and opened at a set opening angle, and a plurality of louvers L are installed at each discharge port of the case 10 to smoothly discharge the swirl flow. Ship inclined in direction It is comprised including the discharge discharge G which was opened.

Here, the case 10 is formed in the shape of a thin rectangular parallelepiped with an open front surface to form a receiving space for the various components therein, the inside of the corner guides the suction flow flowing by the turbo fan 30 Air guide 12 may be integrally formed to enable.

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. The discharge grilles G are installed on both side surfaces and the bottom surface of the case 10 so as to control the discharge wind direction so that cold air is discharged through the discharge grilles G.

In addition, an air filter 14 and a dust collector (not shown) are installed inside the front surface of the case 10 to filter dust and the like from the sucked indoor air, so that the air filter 14 and the dust collector can be cleaned. It is detachably mounted.

At this time, the air filter 14 is installed to slide between the guide protrusions (not shown) formed on both inner sides of the front of the case 10 is operated to filter foreign matter such as dust from the intake air, the dust collector 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.

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 surface 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.

In addition, the control box 54 for controlling the operation of the turbo fan 30 and the front panel (P) is installed on the front upper side of the orifice 50, the motor for driving the turbo fan 30 ( 40) and the power supplied to the step motor (not shown) for opening and closing the front panel (P) at the set angle (θ) and at the same time 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 installed so that the hinge shaft (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 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.

Next, the discharge grills G are installed on both side and bottom surfaces of the case, respectively, as shown in FIGS. 3 and 4, and the discharge grills G installed on both side surfaces of the case 10 are the case. It is installed to be inclined in the front direction of the (10) so that the case 10 can be installed on the wall edge portion.

In particular, a plurality of louvers (L) is installed in the discharge grilles (G) so as to adjust the discharge direction of the cold air inside the rectangular frame (not shown) corresponding to each discharge port, by the turbo fan 30 As the air is blown, the louvers L are installed to be inclined at a set angle θ in the swirl flow direction so as to pass smoothly even when the swirl flow is generated, and the user's fingers do not enter between the louvers L. In preparation for a safety accident, the louvers L are usually installed at intervals of 1 cm or less.

At this time, the set angle (θ) of the louvers (L) is determined by the angle to generate a minimum flow resistance even if the swirl flow passes through the louvers (L), the set angle of such louvers (L) (θ) is determined through repeated experiments, it can be variously determined by the size, the rotation speed and the rotation direction of the turbo fan 30.

Of course, the louvers (L) may be fixed to each frame at a set angle (θ), but may be installed to adjust the set angle (θ) on each frame, but each louver (L) is linked at once It is preferable that a connection lever (not shown) for connecting the louvers L to each other so as to be adjusted to the set angle θ is installed inside the frame.

Furthermore, the louvers L are installed so that one louver L is connected to the step motor in a state where the louvers L are automatically connected to each other by the connecting lever so that the louvers L can be automatically adjusted to the set angle θ. More preferably, the step motor is also connected to the control box 54 is automatically controlled.

Of course, each louvers (L) is adjusted to incline the set angle (θ) in the swirl flow direction of the cold air blown by the turbo fan 30 according to the rotational speed and the rotational direction of the turbo fan 30 The setting angle θ can be adjusted.

Therefore, when the operation of the indoor unit for the frame type air conditioner configured as described above is briefly examined, power is supplied to the various step motors and the motor 40 by the control box 54, and thus the front panel P is opened. At the same time, the turbo fan 30 is rotated to suck indoor air, and the sucked indoor air passes through the evaporator 20 and is converted into cold through heat exchange, and then the turbo fan 30 is replaced. Will pass.

Thereafter, as the turbo fan 30 is rotated, the cool air introduced in the axial direction is discharged in the radial direction to generate swirl flow, and the swirl flow discharges the grills on both side and bottom surfaces of the case 10. It is discharged again through the room (G).

At this time, the louvers L of the discharge grilles G are adjusted to be inclined at a set angle θ so as to be supplied with power to the step motor by the control box 54 in advance to coincide with the swirl flow direction. As such, the swirl flow passes in the state in which the louvers L are inclined in the swirl flow direction, and the swirl flow is dispersed / guided while being gently passed through the louvers L and discharged back into the room.

Accordingly, as the flow resistance decreases while the swirl flows through the louvers L, the noise decreases and the blowing efficiency is increased, and the swirl flow flows quickly through the louvers L, thereby being included in the swirl flow. The vapor can be prevented from building up in the respective louvers (L).

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 is provided with discharge grills for guiding discharge flow on both sides and bottom of a case in which an evaporator and a turbo fan are built, and the louvers of each discharge grill are installed in the turbo fan. Since it is installed to be inclined in the same direction as the rotating flow rotated by it, the flow resistance can be minimized while the swirl flows through each louver, thereby reducing the noise and improving the blowing efficiency. In this case, the vapor contained in the swirl flow can be prevented from forming in each louver in advance.

Claims (3)

A frame case having a suction port formed on the front surface and a discharge hole formed on a plurality of side surfaces thereof; A turbo fan which is built in the case and is sucked into the suction port and discharges heat exchanged in the case through the discharge port in the swirl flow direction; An indoor unit for a frame type air conditioner, comprising: a discharge grill disposed in the discharge port, the discharge grills arranged to be inclined in the swirl flow direction to guide the swirl flow discharged by the turbo fan. The method of claim 1, An indoor unit for a frame type air conditioner, further comprising a plurality of levers connecting the louvers so that the louvers are interlocked. The method of claim 2, An indoor unit for a frame type air conditioner, further comprising a step motor connected to one of the levers to automatically operate the louvers to incline in the swirl flow direction.

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