KR20080071968A - Vibration damping structure for air conditioner - Google Patents

Abstract

A vibration damping structure for an air conditioner is provided to reduce noise and vibration by installing a vibration damping part for relatively increasing an area of a cabinet. A vibration damping structure for an air conditioner comprises a case(72), an evaporator(80), a blowing device(90), and a vibration damping part(73). The thin case, whose front surface is opened, has an inlet hole and an outlet hole at its two surfaces and its bottom surface. The evaporator embedded in the case circulates refrigerant. The blowing device positioned at the rear surface of the evaporator includes a turbo fan(92) and a motor(94) discharging indoor air to the outlet hole. The vibration damping part has a projection part formed at an assembling part of the case to prevent diffusion of vibration even if the blowing device is bolted to the case by a motor mount(98).

Description

Antivibration Structure of Air Conditioner {VIBRATION DAMPING STRUCTURE FOR AIR CONDITIONER}

The present invention relates to a heat exchanger in which a refrigerant is circulated inside a case and an air conditioner capable of cooling and cooling indoor air by embedding a blower that circulates air. Particularly, vibrations are transmitted and / or diffused between a case and a blower. The vibration reduction structure of the air conditioner which can reduce the thing is related.

In general, an air conditioner is a device that keeps indoor air in a comfortable state, and adjusts a certain space to a temperature, humidity, and airflow distribution suitable for human activity, and simultaneously removes dust in the air.

The air conditioner as described above is divided into a separate air conditioner and an integrated air conditioner according to the installation method of the indoor unit and the outdoor unit. The separate air conditioner includes an outdoor unit including a condenser and a compressor to reduce indoor occupancy and noise. Is installed on the side, the indoor unit including a heat exchanger and a blowing fan is installed on the indoor side.

In this case, the separate type air conditioner is divided into a stand type installed to stand in the indoor space according to the installation position of the indoor unit, a wall-hung type or frame type installed to be hung on the wall, and a ceiling type installed to be embedded in the ceiling.

1 is an exploded perspective view showing a blower mounting structure of a general air conditioner.

In general, the indoor unit of the air conditioner has a suction port and a discharge port formed in a case 2 forming an exterior as shown in FIG. 1, and a heat exchanger (not shown) and a blower 10 inside the case 2. Is built-in, the blower 10 is installed so that the blowing fan 12 for blowing air is built in the fan housing (not shown), the motor 14 for driving the blowing fan 12 is the blowing fan And a rivet or screw (B) to the case (2) by means of a motor mount (16).

At this time, the blower fan 12 is driven by the motor 14 to suck indoor air to pass through the heat exchanger, and then cool air is discharged.

However, according to the related art, the air blower mounting structure of the air conditioner fixes the blower fan 12 and the motor 14 to the case 2 with the rivet or screw B by the motor mount 16, but the case 2 ) And the motor mount 16 are fixed to the horizontal contact with each other, so that as the blower fan 12 and the motor 14 are driven, vibration is not only transmitted to the case 2 but also diffused, resulting in noise. There is a problem.

The present invention has been made to solve the above problems of the prior art, the blower is driven in the rivet or screw fixed state by the motor mount inside the case to prevent the vibration to be spread even if the vibration is transmitted to the case to reduce the vibration The purpose of the present invention is to provide a vibration reducing structure of an air conditioner.

Vibration reducing structure of the air conditioner according to the present invention for solving the above problems is the case in which the air intake and discharge port is formed and the heat exchanger has a built-in heat exchanger and the intake, heat exchanger and A blower fan that blows air along the discharge port and a motor driving the blower fan, which is coupled to the case by a motor mount, and protrudes on the case surface so that vibration generated from the blower device is spread along the case. It is comprised including the damping part to reduce.

The vibration reducing structure of the air conditioner according to the present invention configured as described above has a narrow and long protrusion at an engaging portion between the case and the motor mount even if the blower fan and the motor are fixed to the rivet or screw by the motor mount inside the case. Since the vibration damper is configured, the natural frequency of the vibration is reduced as the area of the case is widened even when the vibration is transmitted to the case, thereby preventing the vibration from spreading along the case, thereby effectively reducing vibration and noise. There is this.

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

2A and 2B are exploded perspective views each showing an embodiment of an anti-vibration structure that can be applied to an air conditioner according to the present invention.

One embodiment of the anti-vibration structure of the air conditioner according to the present invention is a blower device 30 consisting of a blower fan 32 and a motor 34 and a motor mount 36 in the case 22, as shown in Figure 2a Is riveted or screw (B) is fastened, the narrow and long protruding long vibration damping portion 24 is formed in the coupling portion of the case 22 and the motor mount 36 to extend outward.

Here, the blower 30 is installed so that the blower fan 32, such as a sirocco fan, a turbo fan, and the like is connected to the motor 34, the blower fan 32 and the motor 34 is the motor mount 36 Rivets or screws (B) are assembled to the assembling holes 22h formed on the flat surface of the case 22 by the above-mentioned.

In more detail, the vibration damping portion 24 is formed so that the narrow and long protrusions are radially extended from one center in a radial direction so as to extend radially more than the motor mount 36, the case 22 Although it may be protruded in any of the inward or outward direction of the, the vibration damping unit 24 is implemented to protrude in the inner direction of the case 22 so that the case 22 is in close contact with the wall surface can be installed. More preferred.

Of course, the vibration damping unit 24 may also act as a kind of reinforcing rib, thereby increasing the strength reinforcing effect of the thin flat case 22.

In this case, as the vibration isolator 24 is radially formed, the assembly hole 22h is formed on a flat surface of the case 22 between the protrusions, and the motor mount 36 is the vibration isolator 24. Rivets or screws (B) are assembled to the flat surface of the case while being supported on.

Therefore, the blower fan 32 and the motor 34 are assembled by rivets or screws B in the assembling holes 22h formed on the flat surface of the case 22 by the motor mount 36, wherein the motor mount is mounted. When the centers of the 36 are assembled with each other so as to coincide with the centers of the vibration damping unit 24, and the motor 34 is operated to rotate the blower fan 32, the vibration is relatively flat metal. Even though the case 22 is transmitted along the formed case 22, it is prevented from being spread along the case 22 by the vibration damper 24.

In this case, as the vibration damping unit 24 is formed to protrude from the flat surface of the case 22, the surface through which vibration is transmitted is expanded more than the case 22 is formed flat.

[Equation]

The equation is related to the natural frequency f of the plate vibration characteristics, c is a vibration transmission speed of the general steel is approximately 5.5 * 10 ^ 3 m / s, a and b represent the horizontal length and the vertical length of the unit area, Considering that the natural frequency is inversely proportional to the transfer area in the plate vibration characteristic, when the vibration damping unit 24 is actually formed in the case 22, the natural frequency may be further reduced to reduce vibration and noise.

Of course, as the motor mount 36 is in line contact with the vibration damping unit 24, the contact area through which vibration is transmitted can also be reduced, so that vibration transmission can be more effectively reduced.

Another embodiment of the anti-vibration structure of the air conditioner according to the present invention is formed in the same manner as in the embodiment as shown in Figure 2b, the assembly hole 24h is directly formed in the vibration damper 24, the air blowing The fan 32 and the motor 34 are fixed by the motor mount 36 to be assembled directly to the vibration damping part 24 by rivets or screws B.

At this time, the vibration damping part 24 is also implemented to protrude in the inward direction of the case 22, and the assembly hole 24h is formed in the vibration damping part 24 so that rivets or screws B are provided in the case 22. Even if assembled from the outside direction of the), it is covered by the vibration damping unit 24 can not only prevent interference with the wall surface, but also improve aesthetics, and the motor mount 36 is directly in contact with the vibration damping unit 24. As the rivet or screw (B) is assembled, it can be assembled more firmly.

Of course, the detailed configuration and operation will be omitted as the same as the embodiment.

In another embodiment of the anti-vibration structure of the air conditioner according to the present invention, as shown in FIG. 3, the air blower 30 having the same configuration as that of the embodiment is fastened to the case 42 by rivets or screws B. In the coupling portion of the case 42 and the motor mount 36, a long '王' shaped vibration damper 34 is formed to protrude in a narrow direction to extend outward.

Here, the blowing fan 32 and the motor 34 are riveted or screwed to the flat surface of the case 42 or the assembly holes 42h and 44h formed in the vibration damping part 44 by the motor mount 36. (B) are assembled.

More specifically, the vibration damping portion 44 is formed such that three narrow and long protrusions are arranged horizontally, and the narrow and long protrusions are arranged vertically so as to intersect therefrom and extend further radially than the motor mount 36, again. The case 42 may protrude in either the inward direction or the outward direction.

Of course, the vibration damping unit 44 may be variously configured in any shape in which the narrow and long protrusions intersect each other in addition to the radial and '王' shapes.

Accordingly, the blower fan 32 and the motor 34 are assembled holes 42h formed in the flat surface of the case 42 by the motor mount 36 and assembly holes 44h formed in the vibration damping unit 44. Rivets or screws (B) are assembled to each other, and assembled together so that the centers of the motor mounts 36 coincide with the centers of the vibration damping part 44, and then the motor 34 is operated to blow the blower fan 32. By rotating, the vibration is prevented from being spread along the case 42 by the vibration damper 44 even though the vibration is transmitted along the case 42 formed in a relatively thin plate shape.

Similarly, since the vibration damping unit 44 can also effectively reduce vibration and noise by performing the same function as the radial vibration damping unit 24 of the embodiment, a detailed description thereof will be omitted.

As described above, the protrusions are narrow and long on the cases 22 and 42 in arbitrary shapes so as to prevent the spread of vibrations in the coupling portions of the cases 22 and 42 and the blower 30 as described in the respective embodiments. The vibration damping units 24 and 44 may be assembled, but may be applied to various air conditioners, such as a stand type air conditioner, a wall type air conditioner, a frame type air conditioner, and a ceiling type air conditioner.

Figure 4 is a graph showing the noise in the conventional air conditioner and the air conditioner of the present invention.

The conventional air conditioner is a case in which the blower is riveted to the flat portion of the case, the air conditioner of the present invention is a case in which the air blower is riveted to the vibration damping portion formed radially in the coupling portion of the case, shown in Figure 4 As can be seen from the conventional air conditioner, the vibration is reduced in the entire frequency band than the air conditioner of the present invention, and furthermore, the vibration is significantly reduced in the 140 Hz band. It can be seen that the vibration and noise reduction effect is more excellent.

5A and 5B are side cross-sectional and exploded perspective views showing a stand type air conditioner to which the anti-vibration structure is applied according to the present invention.

Looking at the stand-type air conditioner to which the anti-vibration structure according to the present invention is applied with reference to FIGS. 5A and 5B, the base 52a is coupled to the bottom surface of the cabinet 52, and the discharge holes 54a are respectively provided on the upper and lower sides thereof. ) Is provided with a discharge grill (54) and a suction grill (56a) formed with a suction port (56a), and the front panel 55 is mounted between the suction grill (56) and the discharge grill (54) to form an outline. The inside of the suction grill 56 is equipped with a blower 60 for sucking indoor air, even if the blower 60 is bolted to the cabinet 52, the narrow and long protrusions on the coupling portion are optional. The vibration damping unit 53 is formed in the shape of to prevent the spread of vibration.

Of course, a heat exchanger 58 for cooling the air sucked by the blower 60 during the cooling movement is installed so as to be obliquely placed above the blower 60, and in the blower 60 during the heating operation. The heater 59 for heating the air sucked by is installed so as to be horizontally above the heat exchanger 58.

Specifically, since the cabinet 52 is formed so that the thin metal plate is bent, vertical and horizontal reinforcing ribs 52H are formed on the rear surface to reinforce its strength, and such reinforcing ribs 52H are formed. Is formed to protrude inward or outward in the shape of a narrow and long protrusion.

Next, the blower 60 includes a sirocco fan 62 for blowing indoor air, a motor 64 for driving the sirocco fan 62, and a sirocco fan 62, and the heat exchanger 58. Fan housing 66 for guiding the air sucked into the side) and a motor mount 68 for bolting the motor 64 to the rear surface of the cabinet.

In addition, the fan housing 66 is equipped with a control box 70 for controlling the overall operation of the air conditioner and a heater control box 72 for controlling the operation of the heater 59 during heating operation. .

At this time, the heater 59 is installed to be located inside the discharge port 54a, the heat exchanger 58 is installed to be located inside the front panel 55, and the blower 60 is the suction port ( 56a) is installed to be located inside.

In particular, the motor mount 68 is installed in contact with the inner rear surface of the cabinet 52 in a flat plate shape, and the radial or 'wang'-shape mentioned in the above embodiment is attached to the engaging portion of the cabinet 52. The vibration damping unit 53 may be formed larger than the radial direction of the motor mount 68.

Of course, the vibration damping unit 53 may be configured in various shapes in a narrow and long protrusions intersected with each other, it may be formed to protrude in any one of the inner or outer direction of the cabinet 52, It is necessarily formed to extend more radially than the engaging portion with the motor mount 53.

Therefore, when the user selects the cooling operation, a signal is transmitted to the control box 70 to operate the heat exchanger 58 and the blower 60 to perform cooling, and when the user selects the heating operation, Signals are transmitted to the control box 70 and the control box 72 for the heater to operate the heater 59 and the blower 60 to perform heating.

In this case, as the blower device 60 is operated during both heating and cooling operations, as the sirocco fan 62 is driven, vibration is transmitted to the cabinet 52 through the motor mount 68, and the vibration is performed in the vibration damping unit. As the 53 is formed, the area of the cabinet 52 is relatively increased to reduce the natural frequency, thereby preventing further spreading of vibrations and reducing vibrations and noises.

6 is an exploded shot attempt showing the anti-vibration structure of the frame type air conditioner according to the present invention.

Looking at the frame-type air conditioner to which the anti-vibration structure according to the present invention is applied with reference to FIG. 6, a thin case 72 having a discharge opening formed at both sides and a bottom thereof at the same time a front surface is opened and an inlet is formed; A turbo fan (80) embedded in the evaporator (80) and positioned on a rear surface of the evaporator (80), suctioning indoor air from the suction port to pass through the evaporator (80), and then discharging it to the discharge port ( 92 and a blower device (90) comprising a motor (94), although the blower device (90) is bolted to the case (72) by a motor mount (98), its coupling of the case (72). In the part, a vibration suppressing portion 73 formed in an arbitrary shape with a narrow and long protrusion is formed to prevent the spread of vibration.

Here, the case 72 is formed in a thin rectangular parallelepiped shape in which the front surface is opened to form a receiving space for various components therein, and the front surface of the case 72 not only shows internal components, but also blocks noise. The front panel P is installed to open and close so that the front panel P can be opened, and discharge grills G1, G2, and G3 are installed on both side surfaces and the bottom surface of the case 72 to adjust the discharge direction.

At this time, indoor air is sucked into the case 72 when the front panel P is opened, and cold air inside the case 72 is discharged through the discharge grills G1, G2, and G3.

In addition, an orifice 74 is installed between the heat exchanger 80 and the turbo fan 92 in the case 72 so that the cool air passing through the evaporator 80 is axially directed to the turbo fan 92. The air filter 78 and the dust collector (not shown) are detachably installed on the front surface of the case 72 to filter the dust from the indoor air. But it can be removed easily when cleaning.

At this time, the orifice 74 is formed with a guide hole (not shown) in the center convex ring shape to guide the suction air to the center of the turbo fan 92 so that turbulence does not occur, other than the guide hole (not shown) The portion of is formed flat to partition the cold air sucked into the turbo fan 92 and the cold air discharged radially through the turbo fan 92.

In addition, a control box 76a for controlling the operation of the turbo fan 92 and the front panel P is installed on the front upper side of the orifice 74, and includes a motor for driving the turbo fan 92 ( 94) and control the power supplied to the step motor (not shown) for opening and closing the front panel P at a set angle, and also controls the power supplied to the dust collector.

Of course, the control box 76a may be directly connected to various operation buttons 76b so that a user can directly operate an air conditioner separately, or may be configured to receive an operation control signal from a remote controller or the like by itself. It controls the operation of the component, and is further connected to a display unit (not shown) installed so as to appear on the exterior to display the operation state of the air conditioner directly through the display unit.

Next, the evaporator 80 is connected to the compressor, condenser, expansion means of the outdoor unit to form a refrigeration cycle, a plurality of fins are installed in the refrigerant pipe is installed inside the front of the case 72, the refrigerant The refrigerant passing through the tube causes heat exchange with the indoor air by a plurality of fins to generate cold air.

Of course, the evaporator 80 is formed in a thin rectangular parallelepiped shape so that the evaporator 80 may be installed inside the case 72, and the front shape is formed in a square shape like the case 72.

In this case, a drain pan 82 is installed below the evaporator 80 to collect the condensed water formed on the surface of the evaporator 80 even though the condensate flows down. C) is installed to drain the condensate to the outside.

Next, the blower 90 is applied with a turbo fan 92 having a relatively large diameter and a motor 94 driving the same, in order to increase the suction air volume even if the axial height thereof is low, but the motor 94 is driven. Even if the power is transmitted to the turbo fan 92, the elastic material 96 is interposed so as to not only buffer the power transmission but also absorb vibration.

In this case, the turbo fan 92 is a disk-shaped hub in the center of the center so as to be connected to the motor 94 and the inclined ring-shaped shroud which is positioned to be axially spaced therein and guides the suction flow, Consists of a plurality of blades positioned circumferentially spaced between the hub and the shroud, the shroud guides the suction flow in the axial direction, while the hub and the blade guides the discharge flow in the radial direction .

Of course, the turbofan 92 is positioned so that the shroud faces the front of the case 72, and the motor 94 is fixed by the motor mount 98 to the inner rear surface of the case 72. It is installed as possible.

In more detail, the motor mount 98 has its center portion pressed against the motor 94 to be seated on the inner back surface of the case 72 while the folded portions at both ends are disposed on the inner back surface of the case 72. It is fixed to the bolt, the both ends of the motor mount 98 in the state in which both ends of the motor 94 and the motor mount 98 abuts against the vibration damping portion 73 formed on the inner back surface of the case 72 72) is fastened to the bolt (B).

Of course, the vibration damping portion 73 may be formed in various shapes in which the elongated protrusions cross each other, and may be formed to protrude in any one of an inner direction or an outer direction of the case 72, but It is formed to extend more radially than the engaging portion with the motor 94 and the motor mount 98.

Accordingly, power is supplied to the step motor and the motor 40 by the control box 76a, and the front panel P is opened from the front of the case 72 by the operation of the step motor. The turbo fan 92 is rotated by the operation of the motor 94 to suck air in the axial direction and discharge the air in the radial direction.

At the same time, the indoor air sucked into the front surface of the case 72 is changed to cold through heat exchange with the refrigerant flowing therein while passing through the evaporator 80, and the cold air is guide holes of the orifice 74. Guided by the suction in the axial direction of the turbo fan 92, and then discharged in the radial direction of the turbo fan 92, each discharge grill (G1) installed on both sides and the bottom surface side of the case 72 Wind direction is controlled while passing through the G2, G3, and is discharged to the indoor space.

In this case, as the front and rear thicknesses of the case 72 are formed to be thin, the motor 94 is directly contacted, and in order to increase the air blowing amount of the turbo fan 92 installed in the limited space inside the case 72. While rotating at a high speed, as the turbo fan 92 rotates at high speed, vibration is transmitted to the case 72 through the motor 94 and the motor mount 98.

However, even if vibration is transmitted to the case 72, as the vibration damping unit 73 is formed at the coupling portion, the area of the case 72 is relatively increased, so that the natural frequency is reduced, thereby preventing the vibration from being further spread. It also reduces vibration and noise.

Of course, when the vibration damping portion 73 protrudes inwardly of the case 72, the motor mount 98 in a state in which the motor 94 and the motor mount 98 contact only the vibration damping portion 73. ), The contact area can also be reduced, so that vibration can be more effectively prevented from being transmitted.

Figure 7 is a side cross-sectional view showing a vibration preventing structure of the ceiling air conditioner according to the present invention.

* Looking at the ceiling-type air conditioner to which the anti-vibration structure according to the present invention is applied with reference to FIG. 7, the front panel having the inlet 112 and the outlet 114 formed on the bottom of the rectangular case 102 having a receiving space therein is formed. 110 is installed, the heat exchanger 116 for cooling the indoor air inside the case 102 is installed to be supported by the front panel 112, and at the same time sucks the indoor air in the case 102 to blow The blower 120 to be suspended is installed on the upper surface, the vibration damping unit 103 is formed in the upper surface of the case 102, the narrow and long protrusions formed in an arbitrary shape on the coupling portion with the blower 120 is vibrated To prevent spreading.

Here, the case 102 is inserted into the hole (H) formed in the ceiling surface (B) and the anchor bolt 106 is fastened by four brackets 104 formed on the circumferential side is fixed to the ceiling wall (A) The front panel 110 is mounted to be exposed to the interior from the ceiling surface B so as to be located at the bottom of the case 102.

In this case, the front panel 110 has the suction port 112 formed in the center, whereas the plurality of discharge ports 114 are formed outside the suction port 112.

Next, the heat exchanger 116 is configured such that a plurality of fins are installed in the refrigerant pipe through which the refrigerant flows, which is placed inside the front panel, and the drain pan (below) is collected so that the condensed water may collect on the surface thereof. 118) to be mounted.

Of course, the heat exchanger 116 and the drain pan 118 are formed in a rectangular ring shape so that the intake air can be introduced into the center, and the heat exchanger 116 radially passes through the heat exchanger. do.

Next, the blower 120 sucks in the axial direction and discharges the turbo fan 122 and the motor 124 for driving the radial direction, and the turbo fan 122 and the motor 124 to the case 102 It consists of a motor mount 126 to be fixed to the upper surface of the).

At this time, the blower 120 is fixed to the inner center of the case 102 so as to be wrapped by the heat exchanger 116, the turbo fan 122 is installed to hang on the motor 124 at the same time The motor 124 is installed to be bolted to the center of the inner upper surface of the case 102 by the motor mount 126.

Of course, as the vibration damping unit 103 is formed at the center of the inner upper surface of the case, the motor mount 126 is installed to contact the vibration damping unit 103, and the vibration damping unit 103 crosses the long protrusions. It may be configured in various shapes, and may be formed to protrude in any one of the inner or outer direction of the case 102, but must be radially more than the engaging portion with the motor mount 126. It is formed to expand.

Therefore, as the turbo fan 122 is operated, indoor air is sucked in the axial direction through the inlet 112, and then flows radially to exchange heat while passing through the heat exchanger 116. It is discharged to the room through).

At this time, condensed water is formed in the heat exchanger 116 due to the temperature difference between the heat exchanger 116 and the ambient air while the indoor air passes through the heat exchanger 116, and the condensed water flows through the heat exchanger 116. Collected and discharged to the drain pan 118 located below the heat exchanger (116).

At the same time, even if the vibration is transmitted to the case 102 through the motor 124 and the motor mount 126 as the turbo fan 122 rotates, the motor mount 126 of the case 102 is not. As the vibration damping unit 103 is formed in the coupling portion, the area of the case 102 is relatively increased to reduce the natural frequency, thereby preventing further spreading of vibration and reducing vibration and noise.

In the above, the present invention has been described in detail by way of examples based on the embodiments 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.

1 is an exploded perspective view illustrating a blower mounting structure of a general air conditioner;

2a and 2b and 3 is an exploded perspective view showing an embodiment of the anti-vibration structure that can be applied to the air conditioner according to the present invention, respectively;

4 is a graph showing the noise in the conventional air conditioner and the air conditioner of the present invention,

5a and 5b is a side cross-sectional view and an exploded perspective view showing a stand type air conditioner to which the vibration preventing structure is applied according to the present invention;

6 is an exploded perspective view showing a vibration preventing structure of the frame type air conditioner according to the present invention;

Figure 7 is a side cross-sectional view showing a vibration preventing structure of the ceiling air conditioner according to the present invention.

<Explanation of symbols on main parts of the drawings>

22: case 24: vibration damper

30: blower 32: blower fan

34: motor 36: motor mount

Claims (1)

Vibration-proof structure of the air conditioner described in the detailed description and drawings of the invention of the present application.

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