KR100504852B1 - Indoor unit of air conditioner with noise decrease function - Google Patents

Abstract

The present invention relates to an indoor unit of an air conditioner having a noise reduction function, comprising: a refrigerant pipe forming a plurality of refrigerant passages and a plurality of heat transfer fins coupled to a circumference of the refrigerant pipe to increase a heat transfer area; An indoor heat exchanger; An electronic expansion valve disposed on an inflow side of the indoor heat exchanger along a flow direction of the refrigerant and expanded under reduced pressure as the refrigerant passes therethrough; A distributor interposed between the electromagnetic expansion valve and the refrigerant pipe to distribute the refrigerant via the electromagnetic expansion valve to the respective refrigerant passages; The electromagnetic expansion valve and the distributor are formed by accommodating the electromagnetic expansion valve and the distributor therein and having a front case and a rear case which are formed to form an open cylindrical shape as one of the sound insulation members and are detachably coupled to each other along the thickness direction. It characterized in that it comprises a noise blocking case for suppressing the noise generated from the transmission to the outside. As a result, an indoor unit of an air conditioner having a noise reduction function capable of suppressing the noise generated from the electromagnetic expansion valve and the distributor when the refrigerant flows to the outside and facilitating installation is provided.

Description

Indoor unit of air conditioner with noise reduction function {INDOOR UNIT OF AIR CONDITIONER WITH NOISE DECREASE FUNCTION}

The present invention relates to an indoor unit of an air conditioner having a noise reduction function. More particularly, the noise generated from the electromagnetic expansion valve and the distributor during the flow of the refrigerant can be suppressed from being transmitted to the outside. The present invention relates to an indoor unit of an air conditioner having a noise reduction function to facilitate the operation.

In general, an air conditioner is a device that is disposed in a room, a living room or an office, a business store, and the like to maintain a comfortable indoor environment by controlling air temperature, humidity, cleanliness, and airflow.

Such an air conditioner is classified into an integrated air conditioner in which components of a refrigeration cycle are accommodated in a single case, and a separate air conditioner having an compressor and a condenser as an outdoor unit and an evaporator as an indoor unit.

1 is a cross-sectional view of an indoor unit of a conventional air conditioner, Figure 2 is a perspective view of the indoor heat exchanger of FIG. As shown in these figures, the indoor unit of the air conditioner is provided with a casing 11 forming an accommodating space therein, and rotatably disposed in the casing 11 to move from the outside into the casing 11. A suction fan 21 for allowing air to be sucked in, and an indoor heat exchanger 31 housed in the casing 11 and heat-exchanged while the sucked air passes.

A suction port 12 is formed in the central region of the bottom of the casing 11 to suck air, and a discharge port 14 is formed around the suction port 12 to discharge the sucked air. In the inner center of the casing 11, the suction fan 21 is rotatably installed around the rotating shaft disposed along the vertical direction to suck air through the suction port 12, and the circumference of the suction fan 21 The indoor heat exchanger 31 is formed to have an almost circular ring shape so that the air sucked by the suction fan 21 can be heat-exchanged while passing therethrough.

The indoor heat exchanger (31) includes a plurality of refrigerant pipes (32) arranged in communication with each other to allow the refrigerant to flow, and a plurality of heat transfer fins (33) coupled to the circumference of the refrigerant pipe (32) to increase the heat transfer area. Equipped. One end of the indoor heat exchanger 31 is connected to one end of the electromagnetic expansion valve 35 so that the refrigerant provided from the outdoor unit (not shown) can expand under reduced pressure, and the other end of the electromagnetic expansion valve 35 has a refrigerant pipe ( A distributor 37 for distributing refrigerant to 32 is connected in communication with each other.

However, in the indoor unit of the conventional air conditioner, the refrigerant provided to the indoor unit 31 after being compressed and condensed from the outdoor unit (not shown) is generated while passing through the electromagnetic expansion valve 35 and the distributor 37. Since there is no means for blocking the noise, the noise is transmitted to the outside of the casing 11 as it is, which causes inconvenience to the user.

Therefore, an object of the present invention, the indoor unit of the air conditioner having a noise reduction function that can suppress the noise generated from the electromagnetic expansion valve and the distributor when the refrigerant flows to the outside and can facilitate the installation. To provide.

According to the present invention, the object is an indoor heat exchanger having a refrigerant pipe forming a plurality of refrigerant passages and a plurality of heat transfer fins coupled to the circumference of the refrigerant pipe to increase the heat transfer area; An electronic expansion valve disposed on an inflow side of the indoor heat exchanger along a flow direction of the refrigerant and expanded under reduced pressure as the refrigerant passes therethrough; A distributor interposed between the electromagnetic expansion valve and the refrigerant pipe to distribute the refrigerant via the electromagnetic expansion valve to the respective refrigerant passages; The electromagnetic expansion valve and the distributor are formed by accommodating the electromagnetic expansion valve and the distributor therein and having a front case and a rear case which are formed to form an open cylindrical shape as one of the sound insulation members and are detachably coupled to each other along the thickness direction. It is achieved by the indoor unit of the air conditioner with a noise reduction function, characterized in that it comprises a noise blocking case for suppressing the transmission of noise generated from the outside.

Here, the sound absorbing material is preferably filled in the interior of the noise shield case.

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

3 is a perspective view of an indoor heat exchanger area of an indoor unit of an air conditioner having a noise reduction function according to an embodiment of the present invention, FIG. 4 is an enlarged view of a main part of FIG. 3, and FIG. 5 is a noise of FIG. 4. An exploded perspective view of the blocking case. The same reference numerals refer to the same and the same components as the above and illustrated configurations, and detailed description thereof will be omitted. As shown in these figures, the indoor unit of the air conditioner with the noise reduction function includes a casing 11 having a suction port 12 and a discharge port 14 formed at a bottom thereof and forming a receiving space therein; It is provided with the suction fan 21 which is arrange | positioned in the center area | region of the casing 11, and sucks air, and the indoor heat exchanger 31 which is arrange | positioned around the suction fan 21 and heat-exchanges as air passes.

The indoor heat exchanger 31 includes a plurality of refrigerant pipes 32 connected in communication with each other so that the refrigerant flows, and a plurality of heat transfer fins 33 coupled to the circumference of the refrigerant pipe 32 to increase the heat transfer area. Equipped. In one end region of the refrigerant pipe 32, the distribution pipe 38 of the distributor 37 for distributing the refrigerant so that the refrigerant can be supplied to each refrigerant pipe 32 is connected in communication with each other. On one side, the collection pipe 39 is connected in communication with each other so that the refrigerant having performed the cooling operation via each refrigerant passage may be collected. On the inlet side of the distributor 37, the electromagnetic expansion valve 35 is connected to each other so that the refrigerant compressed and condensed from the outdoor unit and flowed into the indoor unit can be decompressed.

On the other hand, around the distributor 37 and the electromagnetic expansion valve 35 is coupled to the noise blocking case 41 having a substantially rectangular cylindrical shape, the noise blocking case 41 is the thickness direction of the indoor heat exchanger (31) Therefore, the front case 42a and the rear case 42b are coupled to each other so as to be separated from each other and formed of a sound insulation member to enable sound insulation. Refrigerant pipe receiving holes 43a and 43b are formed in the mutual coupling regions of the front case 42a and the rear case 42b to allow the refrigerant pipe 32 connected to the distributor 37 to be introduced into the inside. A coolant tube hole 44 is formed in the front case 42a so that the coolant tube 32 through which the high pressure and low pressure refrigerant flows can be drawn out. The sound absorbing material 45 is filled in the inner space of the noise blocking case 41 so as to absorb noise generated from the electromagnetic expansion valve 35, the distributor 37, and the like.

By this configuration, the refrigerant compressed and condensed and flowed from the outdoor unit (not shown) expands under reduced pressure while passing through the electromagnetic expansion valve 35 and passes through the distributor 37 to each refrigerant pipe 32 of the indoor heat exchanger 31. It is distributed and flowed in. The refrigerant, which flows along each refrigerant pipe 32 and absorbs latent heat of evaporation, joins again in the collection pipe 39 and flows to the outdoor unit. On the other hand, the sound absorbing material 45 and the noise blocking case 41 absorbs and blocks the flow noise generated while passing through the electromagnetic expansion valve 35 and the distributor 37 so that the flow noise of the refrigerant is transferred to the outside of the casing 11. Will be suppressed.

As described above, according to the present invention, the electromagnetic expansion valve and the distributor therein are provided with a front case and a rear case which are formed to form an open cylindrical shape as one of the sound insulating members and are detachably coupled to each other along the thickness direction. By including a noise blocking case for suppressing the transmission of the noise generated from the electromagnetic expansion valve and the distributor to the outside, by suppressing the transmission of noise generated from the electromagnetic expansion valve and the distributor when the refrigerant flows to the outside. There is provided an indoor unit of an air conditioner having a noise reduction function that can be easily installed.

1 is a cross-sectional view of an indoor unit of a conventional air conditioner,

Figure 2 is a perspective view of the indoor heat exchanger of Figure 1,

3 is a perspective view of an indoor heat exchanger area of an indoor unit of an air conditioner having a noise reduction function according to an embodiment of the present invention;

4 is an enlarged view illustrating main parts of FIG. 3;

5 is an exploded perspective view of the noise blocking case of FIG. 4.

Explanation of symbols on the main parts of the drawings

11: casing 12: inlet

14 discharge port 21 suction fan

31: indoor heat exchanger 35: electromagnetic expansion valve

37: distributor 41: noise blocking case

45: sound absorbing material

Claims (2)

An indoor heat exchanger having a refrigerant pipe forming a plurality of refrigerant passages, and a plurality of heat transfer fins coupled to a circumference of the refrigerant pipe to increase a heat transfer area; An electronic expansion valve disposed on an inflow side of the indoor heat exchanger along a flow direction of the refrigerant and expanded under reduced pressure as the refrigerant passes therethrough; A distributor interposed between the electromagnetic expansion valve and the refrigerant pipe to distribute the refrigerant via the electromagnetic expansion valve to the respective refrigerant passages; The electromagnetic expansion valve and the distributor are formed by accommodating the electromagnetic expansion valve and the distributor therein and having a front case and a rear case which are formed to form an open cylindrical shape as one of the sound insulation members and are detachably coupled to each other along the thickness direction. Indoor unit of the air conditioner with a noise reduction function, characterized in that it comprises a noise blocking case for suppressing the transmission of noise generated from the outside. The method of claim 1, The interior unit of the air conditioner with a noise reduction function, characterized in that the sound absorbing material is filled in the interior of the noise blocking case.