KR20110019076A

KR20110019076A - A refrigerator

Info

Publication number: KR20110019076A
Application number: KR1020090076650A
Authority: KR
Inventors: 강명주; 김진동; 김호산; 채수남; 한준수
Original assignee: 엘지전자 주식회사
Priority date: 2009-08-19
Filing date: 2009-08-19
Publication date: 2011-02-25

Abstract

The present invention relates to a refrigerator for releasing local pressure concentration due to the operation of a cooling fan in a machine room.

To this end, the present invention comprises a main body having a freezer compartment and a refrigerating compartment; A machine room disposed above the main body; And it provides a refrigerator having an opening provided in the machine room in communication with the outside to balance the pressure inside the machine room.

Refrigerator, machine room, opening, cooling fan, pressure

Description

Refrigerator {A Refrigerator}

The present invention relates to a refrigerator for reducing noise in a cooling fan provided in a refrigerator machine room.

In general, a refrigerator is a device for supplying cold air generated in an evaporator to a storage compartment (a freezing compartment or a freezing compartment) to maintain freshness of various foods for a long time. The refrigerator includes a main body in which a storage compartment for storing food in a low temperature state is formed, and a door is installed on the front of the main body to open and close the storage compartment.

The refrigerator includes a cooling cycle configured to cool the storage compartment by circulation of the refrigerant, and the main body is provided with a mechanical compartment provided with a plurality of electrical components to form a cooling cycle.

Such a cooling cycle includes a compressor for raising / heating a low temperature / low pressure gas refrigerant to a high temperature / high pressure gas refrigerant, a condenser for condensing the refrigerant introduced from the compressor by outside air, and a narrow diameter compared to the diameter of other parts. And an expansion valve for depressurizing and expanding the refrigerant introduced from the condenser, and an evaporator for absorbing heat in the furnace as the refrigerant passing through the expansion valve is evaporated in a low pressure state as a basic component.

The machine room is provided with a blowing fan for cooling the compressor and the condenser. One side and the other side of the machine room is provided with a suction port and a discharge port for suction and discharge of the external air, respectively.

Through this structure, when the fan is rotated, air is introduced into the machine room from the inlet. The air introduced in this way is discharged back to the outside of the machine room through the discharge port while passing through the condenser and the compressor, and in this process, the condenser and the compressor are cooled by the external air.

The refrigerator includes a so-called top mount type in which a freezer compartment and a refrigerating compartment are formed up and down, and the freezer door and the refrigerating compartment door are opened and closed in the freezer compartment and the refrigerating compartment, respectively, and the refrigerating compartment and the freezer compartment are formed up and down, and the refrigerating compartment door is a refrigerating compartment. Each of the so-called bottom freezer type, which is provided to be rotated on the left and right sides of the freezer door and is configured to be opened and closed by sliding the front and rear of the freezer compartment, and the freezer compartment and the refrigerating compartment are formed side by side with each other as the refrigerator is enlarged. The freezer compartment door and the refrigerating compartment door are divided into so-called side by side types, which are configured to be opened and closed with both end portions pivoted.

The door of the refrigerator may be provided with various convenience devices such as a home bar or a dispenser that can easily take out food stored in the rear of the door without opening the door for the user's convenience. In addition, the freezing compartment or the refrigerating compartment may be provided with a rapid cooling chamber for rapid cooling of food.

On the other hand, in the conventional refrigerator machine room, a local pressure rise is caused at a specific position inside the machine room according to the operation of the cooling fan, thereby increasing the pressure before and after the cooling fan, causing noise to be generated in the cooling fan. It became.

This caused an unnecessary noise in the machine room during the operation of the refrigerator, and therefore needed an urgent solution because it could not cope with the demands of consumers who demand the operation of a quiet refrigerator.

An object of the present invention is to provide a refrigerator that can minimize the generation of noise in the machine room during operation of the refrigerator.

It is an object of the present invention to provide a refrigerator which makes it possible to maintain a pressure balance inside a machine room.

It is an object of the present invention to provide a refrigerator which enables a stable flow of discharged air discharged through a cooling fan, together with heat radiation inside the machine room.

In order to achieve the above object, a refrigerator according to the present invention includes a main body having a freezing compartment and a refrigerating compartment; A machine room disposed above the main body; And an opening in the machine room so as to communicate with the outside for pressure balancing inside the machine room.

The opening is located facing the cooling fan provided in the machine room.

The opening is arranged in the horizontal wall of the machine room.

The openings are spaced apart from each other on the horizontal wall of the machine room.

The openings are spaced apart from each other on horizontal walls of the machine room based on the compressor provided in the machine room.

The opening is characterized in that the long hole extending in the transverse direction to the machine room horizontal wall.

The opening is arranged on the vertical wall of the machine room.

The opening is provided along the longitudinal direction of the machine room vertical wall.

The refrigerator having the machine room is installed to be built-in inside the wall.

The discharged air discharged through the cooling fan is re-introduced into the machine room after some air is discharged to the outside of the machine room through the opening, and the remaining air is mixed with the air re-introduced through the compressor and discharged outside the machine room.

A constitution according to another embodiment of the refrigerator according to the present invention includes a main body having a freezing compartment and a refrigerating compartment; A machine room disposed above the main body; An opening provided in the machine room so as to communicate with the outside to balance the pressure inside the machine room; And a cooling fan provided in the machine room and disposed to be inclined toward the opening.

The openings are spaced apart from each other on the horizontal wall provided in the machine room, and are also provided on the vertical wall.

The opening is provided with a guide member for guiding the movement of the discharged air discharged from the cooling fan provided in the machine room.

The guide members are installed to face each other on the openings spaced apart from the horizontal wall.

As described above, the refrigerator according to the present invention can minimize the generation of noise inside the machine room, thereby providing a quiet operation of the refrigerator.

The refrigerator according to the present invention has an effect of operating the refrigerator in an optimal state in consideration of installation conditions of the refrigerator installed in a built-in form.

Hereinafter, an embodiment of a refrigerator according to the present invention will be described with reference to the accompanying drawings.

Referring to FIG. 1, a storage compartment 102 is provided inside the main body 1 forming a frame of the refrigerator. The storage compartment 102 is a space in which food to be stored at a low temperature is stored by cold air generated around the evaporator 170 to be described below. A plurality of shelves (not shown) are disposed up and down inside the storage compartment 102, and a drawer-type storage compartment (not shown) is provided below the shelf.

The storage compartment 102 includes a refrigerating compartment 110 and a freezing compartment 120. The refrigerating chamber 110 and the freezing chamber 120 are provided to be separated from each other to form a separate storage space.

The main body 1 is provided with a machine room 100. The machine room 100 is provided above the main body 1, but may be provided below the main body 1 according to design conditions.

An accommodation space is formed inside the machine room 100. The machine room 100 includes a compressor 400, a condenser 500, an expansion valve (not shown), a cooling fan 300, and the like.

The compressor 400 serves to compress a low temperature low pressure gaseous refrigerant circulating a refrigeration cycle into a high temperature high pressure gaseous refrigerant. The refrigerant passing through the compressor 400 flows into the condenser 500.

The refrigerant passing through the condenser 500 is moved to the expansion valve. The expansion valve is made of a narrower diameter than the diameter of the other portion serves to expand and expand the refrigerant introduced from the condenser 400 under reduced pressure.

A cover member 138 covering the accommodation space is provided at the front of the machine room 100. The cover member 138 is provided with a communication hole 138 ′ allowing external air to enter the machine room 100 or allow air inside the machine room 130 to come out.

In addition, the main body 1 is provided with a cold air generating chamber 150. The cold air generating chamber 150 is a space in which a configuration for generating cold air to maintain the storage compartment 102 at a low temperature is installed.

The cold air generating chamber 150 is formed in a rectangular parallelepiped shape from the front of the main body 1 to the rear. The cold air of the storage chamber 102 is introduced into the front of the cold air generating chamber 150, cooled in the cold air generating chamber 150, and then discharged to the rear of the cold air generating chamber 150. However, according to design conditions, a structure that flows in from the rear of the cold air generating chamber 150 and discharges to the front thereof may be applied. In the present embodiment, the cold air generating chamber 150 is separated from the storage chamber 102 at an upper portion of the main body 1 and provided adjacent to the machine chamber 100.

The cold air generating chamber 150 is provided with a cold air inlet and a cold air outlet.

The cold air inlet is an inlet through which cold air of the storage chamber 102 is introduced into the cold air generating chamber 150, and the cold air outlet is discharged to guide cold air of the cold air generating chamber 150 to the storage chamber 102. It is an exit.

The main body 1 is provided with a guide duct. The guide duct forms a path for circulating cold air generated from the evaporator 170 to the storage compartment 102. The guide duct is in communication with the storage chamber 102 and the cold air generating chamber 150, respectively.

The evaporator 170 is configured to absorb heat from the surroundings when the liquid evaporates and become a gas, and to rapidly lower the surrounding temperature.

The evaporator 170 is formed to have a length in a direction perpendicular to a direction through which cold air passes, longer than a length in a direction through which cold air passes.

Referring to FIG. 2, the refrigerator according to the present invention forms an opening 200 in a horizontal wall 102 surrounding the machine room 100 to relieve pressure concentration in the machine room.

In addition, the refrigerator according to the present invention is installed to be built in to the wall (W) in a state where the machine room 100 is disposed above the main body (1).

When installed in this way, the discharged air discharged while the cooling fan 300 provided inside the machine room 100 is operated, while the pressure concentration inside the machine room 100 is minimized through the opening 200 to be described later, The noise generated in the cooling fan 300 is caused to reduce the effect.

In the machine room 100 having such a feature, the cooling fan 300 disposed in the machine room 100 is disposed at a right angle with the communication hole 138 ′ provided in the cover member 138.

The opening 200 includes a first opening 210 and a second opening 220, and is disposed on the horizontal wall 102 facing the cooling fan 300.

The first opening 210 and the second opening 220 are spaced apart from each other on the horizontal wall 102, and are spaced apart from each other in the horizontal direction with respect to the compressor 400 provided in the machine room 100. do.

The opening 200 is formed as a long hole extending in the transverse direction on the horizontal wall (102). Because, when the discharged air discharged from the cooling fan 300 passes through the opening of the opening 200, it moves along the longitudinal direction of the horizontal wall 102, so as to extend in the horizontal direction as shown in the figure This is because opening with a long hole is advantageous for the movement of the discharged air.

Referring to FIG. 3, a plurality of openings 200 are arranged along the longitudinal direction of the vertical wall 104 together with the horizontal wall 102. Unlike the first and second openings 210 and 220, the third openings 230 disposed in the vertical wall 104 are spaced apart at equal intervals and are opened in the entire area of the vertical wall 104.

The reason why the plurality of third openings 230 are continuously opened along the longitudinal direction of the vertical wall 104 is because the refrigerators are installed in a built-in state inside the wall W when the refrigerator is installed. .

That is, the refrigerator main body 1 installed at a distance from the wall W is moved through the first and second openings 210 and 220 formed in the horizontal wall 102 to discharge air discharged from the cooling fan 300. This is because, by reflowing into the machine room 100 through the third opening 230, the pressure concentration phenomenon inside the machine room 100 can be stably solved without losing the total flow rate of the discharged air. A more detailed description thereof will be described later.

A configuration according to another embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 4, in the machine room 100 of the present invention, the cooling fan 300 disposed therein is inclined toward the opening 200 ′.

This is because the cooling fan 300 may be installed and used as shown in FIG. 2, but when the cooling fan 300 is installed to be inclined by a specific angle toward the opening 200 ′, the discharge air is directed toward the opening 200 ′. As it flows, the pressure concentration in the region inside the machine room 100 is relatively reduced.

The openings 200 ′ are provided in the horizontal walls 102 and the vertical walls 104 of the machine room 100, respectively, and are spaced apart from each other on the lateral direction of the horizontal walls 102.

The first opening 210 'and the second opening 220' are spaced apart from each other in the horizontal wall 102 to face the cooling fan 300, and the third opening 230 'is disposed in the vertical wall 104. A plurality are spaced apart along the longitudinal direction.

In addition, the first and second openings 210 'and 220' are provided with a guide member 20 for guiding the movement of the discharged air in the machine room.

The guide member 20 is installed in the first and second openings 210 ′ and 220 ′ opened in the machine room 100 as shown in the drawing, and is selectively provided on either the outer side or the inner side of the horizontal wall 102. It can be installed.

For example, when installed outside the machine room as shown in the embodiment of the present invention to cover all the outside of the first opening 210 'and guide the movement of the discharged air toward the second opening 220'. Can be installed.

The guide member 20 covers the opened upper surface of the opening 200 and faces each other such that the movement of the discharged air is stably moved from the first opening 210 'through the second opening 220'. An arc curved portion is provided to stably guide the movement of the discharged air through the first opening 210 'toward the second opening 220'.

An additional guide member may be selectively installed in the third opening 230 ′, which will be described as being in a non-installed state in this embodiment.

The operation state of the refrigerator according to the present invention made as described above will be described with reference to the drawings.

Referring to FIG. 5, while the refrigerator is operated, the refrigerant of the low-temperature low-pressure gas state is changed to the high-temperature, high-pressure state by the operation of the compressor 400 and moved to the condenser 500.

The condenser 500 is a high-temperature heat is radiated to the machine room through the heat radiation fin, the cooling fan 300 is operated by a separate controller (not shown). The cooling fan 300 is provided with a rotatable fan (not shown) therein, and external fresh air is introduced into the machine room through the communication hole 138 'penetrated through the cover member 138 while the fan is rotated. Inflow.

The outside air partially cools the heat of the condenser 500 that is radiated to a high temperature while passing through the condenser 500, and flows into the cooling fan 300 to the area inside the machine room 100 as shown by an arrow in the figure. The discharged air is discharged.

The discharged air discharged from the cooling fan 300 moves toward the compressor 400 located in the machine room 100, and part of the air moves toward the first opening 200.

As the discharge air stays concentrated, the first opening 200 concentrates pressure on the lower side of the horizontal wall 102 facing the cooling fan 300, which is a position for increasing the pressure inside the machine room 100.

In the present invention, the discharged air discharged from the cooling fan 300 does not stay below the horizontal wall 102 where the pressure is concentrated inside the machine room 100, and the outside of the machine room 100 through the first opening 210. While being discharged to, the pressure concentration inside the machine room 100 is not caused.

The discharged air is temporarily discharged to the outside of the machine room 100 through the first opening 210, and then the moving direction is changed by the wall W by the layout of the built-in refrigerator. Is moved towards.

The discharged air is re-introduced into the inner region of the machine room 100 through the second opening 220 or the third opening 230, and mixed with the discharged air that has not flowed out of the first opening 210 to the outside of the machine room 100. Is discharged.

The opening 200 is opened so that a part of the discharged air for releasing pressure concentration inside the machine room 100 is bypassed to the outside of the machine room 100, and a part of the total discharged air discharged from the cooling fan 300. Is temporarily moved outside the machine room 100, and then re-introduced into the machine room 100 to block the generation of noise of the cooling fan 300 due to heat radiation and pressure concentration.

Since the plurality of third openings 230 are disposed along the longitudinal direction of the vertical wall 104, the third openings 230 are discharged to the outside of the machine room 100 through the first openings 210, or the inside of the machine room 100. Inflow of air into the machine room 100 can be re-introduced through the third opening 230.

An operating state according to another embodiment of the refrigerator according to the present invention will be described with reference to the drawings.

Referring to FIG. 6, while the refrigerator operates, the refrigerant discharged from the compressor 400 is moved through the condenser 500, the expansion valve, and the evaporator, and in the condenser 500, high temperature heat is transmitted through a heat radiation fin. Heat dissipation into the machine room.

At the same time, while the cooling fan 300 is operated by a controller (not shown), the fan is driven and fresh air from outside is transferred into the machine room 100 through the communication hole 138 'penetrated through the cover member 138. Inflow.

The outside air partially cools the heat of the condenser 500 that is radiated to a high temperature while passing through the condenser 500, and flows into the cooling fan 300 ′, so as to show an area inside the machine room 100 as indicated by an arrow in the figure. The discharged air is discharged.

At this time, the cooling fan 300 is installed in a state inclined toward the first opening 210 ', so that the discharged air discharged from the cooling fan 300 is immediately moved toward the first opening 210'. When the movement path of the discharged air is operated as the path which is directly moved toward the first opening 210 ', the phenomenon caused by the concentration of pressure in the upper part of the cooling fan 300' is minimized and the first opening 210 is operated. ') Serves to reduce the noise of the cooling fan 300' with the pressure concentration.

In addition, since the cooling fan 300 'itself is installed to be inclined toward the first opening 210', localized pressure concentration in the machine room 100 can be eliminated and discharge air flow to the compressor 400 can be more desired. Will be done.

As the discharged air is moved to the outside of the machine room 100 through the first opening 210 ', the moving direction is all switched by the guide unit 20 toward the second opening 220'. The guide unit 20 may be selectively installed in some cases, and this embodiment describes an operating state in a state in which the guide unit 20 is installed.

The inclination angle of the curved portion provided in the guide portion 20 is preferably inclined so that the discharge air can be stably moved toward the second opening portion 220 ', and preferably has an angle not exceeding the range of 90 degrees.

As the discharged air is guided through the first opening 210 'and the guide unit 20, a part of the discharged air is moved toward the second opening 220', and the remaining air is transferred to the third opening 230 '. Is moved toward).

The discharged air moved toward the second opening portion 220 'is introduced into the second opening portion 220' by the guide portion 20 and flows in one direction of the compressor 400, and the cooling fan 300 ' ) Is mixed with the discharged air discharged from the and moved toward the cover member 138.

At the same time, the discharged air discharged through the first opening 210 'is discharged through the opening of any one of the third openings 230' disposed in the longitudinal direction of the vertical wall 104 so that the machine room 100 is reintroduced into the inside and discharged to the outside of the cover member 138 without losing the flow rate.

The difference according to the generation of noise in the cooling fan according to the present invention operated as described above will be described with reference to the drawings.

Referring to FIG. 6, the discharge air generated from the cooling fan 300 ′ is discharged into the machine room 100 with the discharge pressure, and the pressure of the discharge air is concentrated under the horizontal wall 102. .

As the discharged air moves a part of air through the first opening 210 'under the horizontal wall, noise is reduced by local pressure concentration in front of the cooling fan 300'.

The refrigerator according to the present invention was tested for the noise level in the machine room provided in the machine room.

Referring to FIG. 7, the X axis represents frequency and the Y axis represents decibel. In the conventional machine room, the experiment was performed in a state in which a separate opening is not provided on the horizontal wall or the vertical wall as in the present invention, and the present invention is a noise measurement experiment according to the operation of the cooling fan in the condition in which the opening is provided.

As a result, it can be seen that the present invention eliminates the concentration of pressure in the machine room 100 as some of the discharged air generated in the cooling fan 300 'is moved through the opening 200'.

In particular, the noise attenuation is not made in a specific frequency region, it appears that the noise generated in the machine room in all areas is reduced, which can be seen that the noise is reduced by the opening according to the present invention.

In the above described and illustrated with respect to the preferred embodiment of the present invention, the present invention is not limited to the above-described embodiment, the technical field to which the present invention belongs without departing from the spirit of the invention claimed in the claims Anyone of ordinary skill in the art of various modifications can be made, as well as such changes are within the scope of the claims.

1 is a perspective view showing a refrigerator according to the present invention.

2 to 4 is a perspective view showing a machine room of the refrigerator according to the present invention.

5 to 6 is an operating state of the refrigerator according to the present invention.

7 is a graph illustrating a comparison of noise generated in a machine room of a refrigerator and a conventional refrigerator according to the present invention;

* Description of the symbols for the main parts of the drawings *

1: body 100: machine room

102: horizontal wall 104: vertical wall

200: opening 210: first opening

220: second opening 230: third opening

300: cooling fan 400: compressor

500: condenser

Claims

A body having a freezer compartment and a refrigerating compartment;

A machine room disposed above the main body; And

Refrigerator, characterized in that the opening is provided in the machine room to communicate with the outside to balance the pressure inside the machine room.

The method of claim 1,

The opening is characterized in that the refrigerator facing the cooling fan provided in the machine room.

The method of claim 1,

And the opening is arranged in a horizontal wall of the machine room.

The method of claim 1,

The openings are spaced apart from each other on the horizontal wall of the machine room based on the compressor provided in the machine room.

The method of claim 1,

The opening is a refrigerator, characterized in that the long hole extending in the transverse direction to the machine room horizontal wall.

The method of claim 1,

And the opening is disposed on a vertical wall of the machine room.

The method of claim 1,

The opening is characterized in that the refrigerator provided along the longitudinal direction of the vertical wall of the machine room.

The method of claim 1,

The refrigerator having the machine room is installed to be built-in (Built-in) inside the wall.

3. The method of claim 2,

The discharged air discharged through the cooling fan,

And a part of the air is discharged to the outside of the machine room through the opening, and the remaining air is mixed with the air reintroduced through the compressor and discharged to the outside of the machine room.

A body having a freezer compartment and a refrigerating compartment;

A machine room disposed above the main body;

An opening provided in the machine room so as to communicate with the outside to balance the pressure inside the machine room; And

And a cooling fan provided in the machine room and disposed to be inclined toward the opening.

The method of claim 11,

The opening is

A refrigerator, characterized in that spaced apart from each other on the horizontal wall provided in the machine room, also provided in the vertical wall.

The method of claim 11,

In the opening

And a guide member for guiding the movement of the discharged air discharged from the cooling fan provided in the machine room.

The method of claim 13,

The guide member is

Refrigerator, which is installed to face each other on the opening spaced apart from the horizontal wall.