KR100829135B1 - Device for prevention of noise in indoor unit of air conditioner - Google Patents

Abstract

A noise preventing device for an indoor unit of an air conditioner is provided to mount a sound absorption element and a vibration preventing element between blower fans on an inner wall surface of a housing, thereby preventing noise and vibration caused by the blower fans not to be transmitted to the inside of a room. A noise preventing device for an indoor unit of an air conditioner includes a blower part(20) having blower fans(24) driven to rotate by a blower motor(22), a housing element(30) fixed to a ceiling and having a mounting housing(32) for mounting the blower part, and a sound absorption element(50) made with a porous material and mounted in the housing element for absorbing noise. A vibration preventing element(40) is made with an elastic material and mounted at a lower part of the sound absorption element in the housing element for absorbing vibration.

Description

Device for prevention of noise in indoor unit of air conditioner

1 is a view showing the front of a conventional ceiling air conditioner.

FIG. 2 is a view illustrating a state in which the ceiling type air conditioner illustrated in FIG. 1 is installed on a ceiling.

Figure 3 is an exploded perspective view of the noise prevention device of the indoor unit for an air conditioner according to an embodiment of the present invention.

4 is a perspective view of the housing member, the sound absorbing member, and the dustproof member shown in FIG. 3.

5 is a side cross-sectional view illustrating a state in which the sound absorbing member and the dustproof member illustrated in FIG. 3 are installed in the housing member.

<Description of Symbols for Main Parts of Drawings>

10: front panel 12: discharge grill

14: suction grill 16: heat exchanger

20: blower 22: blower motor

24: blower fan 30: housing member

32: mounting housing 34: motor housing

36: fan housing 40: dustproof member

50: sound absorbing member 52: first projection

54: sound absorbing port 56: second projection

60: cover member

The present invention relates to an air conditioner, and more particularly, to a noise preventing device of an indoor unit for an air conditioner, which reduces noise by installing a sound absorbing member and a dustproof member around a blowing fan where noise is generated in an indoor unit of an air conditioner. .

In general, an air conditioner is widely used as a mechanical device that performs functions such as air conditioning, dehumidification, and air cleaning, and includes components for implementing a refrigeration cycle.

That is, a compressor for compressing the refrigerant, a condenser for introducing the compressed refrigerant from the compressor, condensed into the liquid phase, and transferring condensation heat to the surroundings, an expansion mechanism for expanding the refrigerant condensed in the condenser, and the expansion mechanism It is composed of an evaporator which is a heat exchanger that absorbs the heat of evaporation from the surroundings while the expanded refrigerant evaporates.

In the air conditioner, the indoor unit and the outdoor unit are separated from each other by installing a cooling device on the indoor side, and installing a heat dissipation and compression device on the outdoor side by connecting the two separated devices with refrigerant pipes.

The indoor unit may be installed on a wall, and may be fixed to a ceiling or spaced apart from the ceiling to save space.

Hereinafter, a ceiling type air conditioner will be described with reference to the accompanying drawings.

1 is a view showing a front of a conventional ceiling air conditioner, Figure 2 is a view showing a state in which the ceiling air conditioner shown in Figure 1 is installed on the ceiling.

As shown in FIG. 1, the front panel 3 of the ceiling type air conditioner in which the suction grill 1 for sucking air in the target space for air conditioning and the discharge grill 5 for discharging the air-conditioned air are indoor units. Is installed on.

The indoor unit is installed with the fixing bar 9 connected to the housing member 6 forming the rear case as shown in FIG. 2 fixed to the ceiling 7 or the suction grill 1 and the discharge grill 5. It may be installed embedded in the ceiling (7) in the exposed state toward the bay.

One side of the indoor unit has a drainage pipe 8 protrudingly formed, and the drainage pipe 8 is connected to a drain pump (not shown) to discharge condensed water generated from a heat exchanger (not shown) to the outside.

To this end, a collecting panel (not shown) for collecting condensate is installed under the heat exchanger, and the drain pump is installed under the collecting panel.

A blower comprising a blower fan and a blower motor is installed inside the suction grill 1, and after the outside air is sucked into the suction grill 1 by heat of the blower fan, and the heat exchange is performed, the discharge grill 5. Come out through.

However, the noise and vibration generated when the blowing fan rotates are transmitted to the user in the room through the housing member 6. Therefore, there is a need for improvement.

The present invention has been created by the necessity as described above, the noise prevention device of the indoor unit for the air conditioner that can prevent the quietness of the product is reduced due to the noise and vibration generated by the blower fan when the indoor unit is operating to the room. The purpose is to provide.

An apparatus for preventing noise of an indoor unit for an air conditioner according to the present invention includes: a blower having a blower fan rotated by a blower motor, and a housing provided with the blower mounted therein, the housing member fixed to the ceiling and the housing. Installed inside the member is configured to include a sound absorbing member made of a porous material to absorb noise.

Alternatively, a blower having a blower fan rotated by a blower motor, a mounting housing to which the blower is mounted, is provided at an inner side thereof, and a housing member fixed to a ceiling, and installed at the inner side of the housing member to absorb elasticity. It is configured to include a soundproof member made of a porous material to be installed on the upper side of the dustproof member and the dustproof member having a.

Preferably, the sound absorbing member is installed around the inlet of the blowing fan.

The blower fan may be spaced apart from each other, and the sound absorbing member may be installed on an inner wall of the housing member located between the blower fan and a neighboring blower fan.

The surface of the sound absorbing member is provided with a first protrusion for reducing noise, and the first protrusion is formed in a wave shape.

The sound absorbing member is provided with a plurality of sound absorbing holes having a predetermined depth.

In addition, a second protrusion is formed on the inner surface of the sound absorbing port to reduce noise, and the second protrusion is formed in a wave shape.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the noise prevention device of the indoor unit for an air conditioner according to the present invention. For convenience of explanation, the ceiling type air conditioner will be described as an example. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

Figure 3 is an exploded perspective view of the noise prevention device of the indoor unit for an air conditioner according to an embodiment of the present invention, Figure 4 is a perspective view of the housing member, the sound absorbing member and the dustproof member shown in Figure 3, Figure 5 is Figure 3 Side sectional view showing a state in which the sound absorbing member and the dustproof member shown in the housing member is installed.

3 to 5, the suction grill 14 is installed at one side of the front panel 10, and the discharge grill 12 is installed at the other side of the front panel 10.

The front panel 10 is combined with the housing member 30 to form an interior space of the ceiling air conditioner, and a heat exchanger 16 is installed between the front panel 10 and the housing member 30 to circulate the refrigerant. Heat exchange.

The blower 20 installed inside the suction grill 14 includes a blower motor 22 and a blower fan 24 rotated by the blower motor 22.

The housing member 30 is provided with a mounting housing 32 for mounting the blower 20.

The mounting housing 32 includes a motor housing 34 for mounting the blower motor 22 and a fan housing 36 for mounting the blower fan 24.

The motor housing 34 is installed so that the blowing motor 22 is fixed to the housing because the bracket surrounding the outer shape of the blowing motor 22 is protruded.

In addition, the fan housing 36 has a shape in which a supporting jaw protrudes to support one end of the blower fan 24 and an outer end of the other end thereof.

The cover member 60 is mounted to the fan housing 36 after the blower fan 24 is rotatably mounted to the fan housing 36.

The fan housing 36 and the cover member 60 inside the groove is formed so that the blowing fan 24 is rotated.

Inside the housing member 30, a dustproof member 40 having elasticity to absorb vibration is installed.

In addition, a sound absorbing member 50 made of a porous material is installed above the dustproof member 40 to absorb noise.

The anti-vibration member 40 is used to block the vibration absorption and noise caused by the driving of the blower 20, a rubber plate having elasticity is used, a variety of materials within the technical concept of elasticity according to an embodiment of the present invention The dustproof member 40 may be made of a material.

The dustproof member 40 may be adhered to the housing member 30 by using an adhesive, and the rubber member may be sprayed onto the housing member 30 to form the dustproof member 40.

The sound absorbing member 50 may be formed of various materials such as a porous fiber material, a ceramic material, and a synthetic resin material. The sound absorbing member 50 may be attached to the periphery of the blower fan 24 using heat resistant materials such as sponges and polyurethane foams.

At the time of attachment of the sound absorbing member 50, various methods may be used, such as using an adhesive or fixing by fitting, and applying a separate resin solution to the housing member 30 to cure it.

The surface of the sound absorbing member 50 is formed with a first projection 52 in order to effectively reduce the noise generated in the blower 20.

The first protrusion 52 may be formed in various shapes, including a rectangular parallelepiped, a cylindrical shape, and a spherical shape. In the present invention, the first protrusion 52 is formed in a wave shape. It is not limited.

In addition, a plurality of sound absorbing holes 54 having a predetermined depth are formed in the sound absorbing member 50.

In addition, a second protrusion 56 is formed on the inner surface of the sound absorbing port 54 to reduce noise.

The second protrusion 56 may be formed in various shapes, including a rectangular parallelepiped, a cylindrical shape, and a spherical shape. In the present invention, the second protrusion 56 is formed in a wavy shape. It is not limited.

Since the first protrusions 52 and the second protrusions 56 are formed in a wave shape, the shape of the mold is relatively simple, the productivity is improved, and the contact area is increased, thereby reducing noise.

As described above, the first protrusion 52, the second protrusion 56, and the sound absorbing port 54 are formed in the porous sound absorbing member 50, thereby maximizing the area for absorbing the noise transmitted to the sound absorbing member 50. Noise generated during operation of the blower 20 and the product is effectively absorbed by the sound absorbing member 50.

The sound absorbing member 50 and the dustproof member 40 as described above are installed around the inlet of the blower fan 24. In detail, the blower fan 24 is installed to be spaced apart in plurality, and the blower fan ( The sound absorbing member 50 and the dustproof member 40 are installed on the wall of the fan housing 36, which is an inner wall of the housing member 30, located between the air blower 24 and the neighboring blower 24.

The sound absorbing member 50 and the anti-vibration member 40 are installed on the wall of the fan housing 36, so that the blower fan 24 faces the fan housing 36 during the rotation operation of the blower fan 24. This is because noise is most generated at the entrance.

The sound absorbing member 50 and the dustproof member 40 have a thickness of 10 mm or less so as not to affect the air suction of the blower fan 24.

According to another embodiment of the present invention, only the sound absorbing member is installed in the housing member without the dustproof member, and the shape and function of the sound absorbing member are the same as the sound absorbing member according to the embodiment of the present invention.

In this case, the thickness of the sound absorbing member does not affect the operation of the blower fan even if the dustproof member is increased by the deleted thickness.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

In addition, although the ceiling type air conditioner has been described as an example, this is merely exemplary, and the noise preventing device of the present invention may be used in an indoor unit for an air conditioner other than the noise preventing device used for the ceiling type air conditioner.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

As described above, the noise preventing device of the indoor unit for the air conditioner according to the present invention, unlike the conventional invention, the noise and vibration generated by the blower fan during operation of the indoor unit is absorbed by the dustproof member and the sound absorbing member, so the noise is noise indoors This can be reduced.

Claims (9)

delete A blowing unit having a blowing fan rotated by a blowing motor; A housing member having a mounting housing on which the blower unit is mounted and fixed to the ceiling; A dustproof member installed inside the housing member and having an elasticity to absorb vibration; And Installed on the upper side of the dustproof member, the noise preventing device of the indoor unit for an air conditioner, characterized in that it comprises a sound absorbing member made of a porous material to absorb the noise. The method of claim 2, The sound absorbing member is a noise preventing device of an indoor unit for an air conditioner, characterized in that installed around the inlet of the blowing fan. The method of claim 2, The blowing fan is installed in a plurality of spaced apart, the sound absorbing device of the indoor unit for the air conditioner, characterized in that the sound absorbing member is installed on the inner wall surface of the housing member located between the blowing fan and the adjacent blowing fan. The method of claim 2, Surface of the sound absorbing member is a noise preventing device of the indoor unit for the air conditioner, characterized in that the first projection for reducing the noise is formed. The method of claim 5, wherein Noise suppression apparatus for an indoor unit for an air conditioner, characterized in that the first protrusion is formed in a wave shape. The method of claim 2, Noise absorbing device of the indoor unit for the air conditioner, characterized in that the sound absorbing member is formed with a plurality of sound absorbing holes having a predetermined depth. The method of claim 7, wherein An inner side of the sound absorbing port is a noise preventing device of the indoor unit for the air conditioner, characterized in that the second projection for reducing the noise is formed. The method of claim 8, The second projection is a noise preventing device of the indoor unit for an air conditioner, characterized in that formed in a wave shape.

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