KR20030036369A - Front suction and discharge type outdoor unit for air-conditioner - Google Patents

Abstract

PURPOSE: A front side suction and discharge type outdoor unit for an air conditioner is provided to prevent deterioration of efficiency of heat exchange due to reduction of area of a suction part. CONSTITUTION: An outdoor unit comprises an outdoor unit casing formed as a rectangular parallelepiped with one side facing the outside opened and the other sides including an upper side and a bottom side closed, and divided into a suction part and a discharge part; a compressor compressing refrigerant vapor supplied from an indoor unit through a tube; an air-cooled condenser condensing refrigerant vapor supplied by the compressor; and a cross flow cooling fan(40) installed in the outdoor unit casing to supply the air-cooled condenser with outside air and to discharge air having exchanged heat to the outside. Suction orifices of the cross flow cooling fan face two of the sides of the outdoor unit casing contacting with the opening side. A motor(38) of the cross flow cooling fan is installed near one of the suction orifice. The cross flow cooling fan is installed eccentrically from a central axis(A) of the air-cooled condenser toward a side on which the motor is installed.

Description

Front outdoor air conditioner for outdoor air conditioner {FRONT SUCTION AND DISCHARGE TYPE OUTDOOR UNIT FOR AIR-CONDITIONER}

The present invention relates to an outdoor unit for an air conditioner, and more particularly, to an outdoor unit for an air conditioner of a front suction type.

Air conditioners including both air conditioners or heaters can be divided into one-piece and separate types. In the case of describing the air conditioner as an example, the separate type air conditioner, which is the object of the present invention, is installed indoors to cool the room, and is connected to the indoor unit and the refrigerant pipe, and is installed in the outdoor contact with the air to provide external air to the cooling medium. It consists of an outdoor unit that supplies the condensed refrigerant after condensation heat exchange with the refrigerant gas in the condenser to the evaporator of the indoor unit through the refrigerant pipe. The indoor unit includes an evaporator for cooling heat exchange to absorb evaporative heat from the indoor air by evaporating the refrigerant, and a ventilation fan for circulating the indoor air. An air-cooled condenser for condensing, and a cooling fan for cooling and condensing the refrigerant gas by forcibly blowing external air to the air-cooled condenser. The compressor, air-cooled condenser and cooling fan of the outdoor unit are housed inside the outdoor unit casing that forms the exterior. Conventional hexahedral outdoor unit casings inhale air through an air-cooled condenser on three sides

An air intake portion for raising and an air discharge portion for discharging the air absorbing the condensation heat from the refrigerant gas to the outside through heat exchange in an air-cooled condenser on its upper surface.

However, such a conventional outdoor unit for an air conditioner has been restricted in the installation place due to the high density of the city and the strengthening of environmental management, and has been subjected to complaints of the surroundings due to noise and heat emission. In particular, common residential facilities, such as large apartment complexes, require outdoor units to be installed inside the veranda due to aesthetics and noise problems.

In order to solve this problem, Japanese Patent Laid-Open Publication No. Hei 6-101873 is installed indoors of an air conditioner or adjacent to an indoor unit, and an outdoor unit of an air conditioner is installed outdoors. In the installed air conditioner-mounted building, an opening is installed in the outer wall or roof, a louver is installed in the opening, an outdoor unit of the air conditioner is installed inside the louver, and the intake or exhaust of the outdoor unit is a wing plate of the louver. Disclosed is a building equipped with an air conditioner, which is to be carried out through a gap.

In addition, Japanese Patent Laid-Open No. 3-213928 discloses an outdoor unit main body for an air conditioner having an outline having a thickness substantially the same as the wall embedded in the wall, and air for heat exchange disposed on the same side of the main unit main body. An outdoor unit for a wall-mounted air conditioner having a suction port and a blowout port of air after heat exchange is disclosed.

However, the above-mentioned prior arts do not present a specific method of improving heat exchange efficiency in the outdoor unit for the air conditioner of the front suction method, in which the area of the suction part is inevitably reduced compared to the conventional outdoor unit, and the heat exchange efficiency decreases.

Accordingly, the present invention provides a cooling fan structure that can be effectively applied to an outdoor unit for an air conditioner of the front suction type, and is an outdoor unit for an air conditioner for an air conditioner of the front suction which has a heat exchange efficiency that is comparable to or higher than that of a conventional outdoor structure. The purpose is to provide.

In addition, it is an object of the present invention to provide an efficient installation structure capable of installing a large-capacity outdoor unit that is growing with increasing air conditioning capacity in a wall-mounted form.

1 is a partial cross-sectional perspective view showing the structure of one embodiment of an outdoor unit for a front air suction type air conditioner according to the present invention.

FIG. 2 is an exploded perspective view of the outdoor unit shown in FIG. 1.

FIG. 3 briefly shows an installation configuration of a cooling fan used in the outdoor unit shown in FIG. 1.

Description of the main drawing numbers

2: building exterior wall 4: exterior frame

6: inner frame 7a: suction area

7b: discharge area 8: louver blade

10: outdoor unit 12a, 12b, 12c: side cover

14: bottom cover 16: top cover

20: compressor 30: condenser

36: orifice 38: motor

40: cooling fan 42: fan frame

44: fan bracket 46: fan front

The present invention is an outdoor unit casing having a rectangular parallelepiped shape in which the one side facing outward is opened and the top, bottom and three other sides are closed, and the inside thereof is divided into the suction part and the discharge part, and is installed in the outdoor unit casing, and the pipe is installed from the indoor unit. A compressor for compressing the refrigerant gas supplied through the air, an air-cooled condenser installed in the outdoor unit casing, condensing the refrigerant gas supplied from the compressor, and supplying external air to the air-cooled condenser and discharging the heat-exchanged air to the outside. And a cross flow fan installed in the outdoor unit casing, wherein the suction orifice of the cross flow fan faces two sides contacting the opened one side, and the cross flow fan

Is installed near the suction orifice facing one of the two sides, and the cross flow fan is installed for the air conditioner of the front suction type air conditioner which is eccentrically installed toward the center line of the air-cooled condenser. Provide outdoor unit.

Here, the outdoor unit further comprises a louver frame, the louver frame is fixed to the suction part and the discharge part of the outdoor unit casing on the inner wall of the rectangular space formed on the outer wall of the building, the suction part of the outdoor unit casing And a suction area and a discharge area corresponding to the discharge part, and air may be sucked and discharged through a gap between the louver blades, including a plurality of louver blades in each area. In this case, the louver frame may be composed of an outer frame forming an edge, and an inner frame fastened to the outer frame and including a louver blade.

In addition, the discharge portion of the outdoor unit casing may further include a fan support member for supporting the cooling fan, in this case, the support member is a fan frame for reinforcing and supporting the corners of the discharge portion, the fan in the fan frame In this case, the outdoor unit casing may be divided into a suction casing corresponding to the suction part and a discharge casing corresponding to the discharge part, and the fan frame may be configured to connect the discharge casing. It is better to support the reinforcement.

Hereinafter, the present invention for cooling based on an embodiment of the present invention and the accompanying drawings

An air conditioner is explained in more detail as an example. However, the scope of the present invention is not limited by the following examples and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

1 to 3 show the structure of the outdoor unit for the air conditioner of the front suction method according to an embodiment of the present invention.

An outer frame 4 is fixedly installed on a rectangular inner wall of a rectangular space formed on the outer wall 2 of a residential and / or commercial building, and an inner frame 6 inside the outer frame 4, and the outer frame 4. It is fixed to the installation. In some cases, the inner and outer frames 4 and 6 may be integrally formed. The inner region of the inner frame 6 is divided into a suction region 7a and a discharge region 7b, and a plurality of louver blades 8 are provided in each region to fill the gap between these louver blades 8. Air is sucked in or discharged through it. The direction of the louver blade 8 may be manipulated to adjust the direction in which air is sucked and / or discharged. However, considering that the inner frame 6 including the louver blade 8 is installed in contact with the outdoors, and that it is often installed on a high floor or the like and difficult to maintain from the outside, the louver blade 8 is electrically operated. When opening and closing according to the operation of the outdoor unit, the risk of failure is high and repair is inconvenient in case of failure. Therefore, the louver blade 8 is kept open in a predetermined direction by determining the air intake and discharge directions in consideration of the external environment. Suffice.

On the other hand, the outdoor unit 10 fixedly installed inside the building exterior wall 2 to contact the outer frame 4 and / or the inner frame 6 has an outdoor unit casing, which is the component shown in FIG. In addition, the outdoor unit components shown in FIG. 2 are also installed inside the outdoor unit casing.

First, one side of the outdoor unit casing facing the suction area 7a and the discharge area 7b of the inner frame 6 is opened, and the open side part is divided into the suction part 11a and the discharge part 11b. Separated to correspond to the suction region 7a and the discharge region 7b of the inner frame. The other three side covers 12a, 12b, and 12c, the bottom cover 14, and the top cover 16 are closed to form an overall cuboid shape. In addition, the outdoor unit casing may be classified into a suction casing corresponding to the suction part 11a and a discharge casing corresponding to the discharge part 11b. The bottom cover 16 has a plurality of leg members 18a, 18b, 18c, and 18d protruding outward from the bottom cover 16, and these leg members 18a, 18b, 18c, and 18d are formed on the floor of the building, e.g. Is supported on the floor to support the heavy load of the outdoor unit (10). The number of leg members 18a, 18b, 18c, and 18d may be preferably about four when considering the shape of the bottom cover 14. In addition, a leg reinforcement 19 for connecting and reinforcing these leg members 18a, 18b, 18c, and 18d to each other is formed in the transverse direction under the bottom cover 14. In addition, the leg members 18a, 18b, 18c, and 18d further include a height-adjustable screw (not shown), so that when the flatness of the floor of the building, for example, the floor of the apartment veranda is not correct, the outdoor unit ( It can be used to level 10. In addition, when the two of the leg members (18a, 18b, 18c, 18d), for example, the front (building outer wall side) two leg members (18a, 18b) further comprises a wheel for movement (not shown), It becomes quite convenient to carry the heavy load outdoor unit 10.

In addition, the compressor 20 is installed on the compressor fastening part 22 in the outdoor unit suction part 11a, and the "cool" air-cooled condenser 30 has the condenser cover 32a, 32b, 32c and the condenser bracket 34a. , 34b are fixedly supported to the side covers 12a and 12b and the bottom cover 14. Air-cooled condenser 30 has a plurality of rows of condenser piping between the many condenser fins has a zigzag shape. The structure and shape of the air-cooled condenser are not shown in detail because they are already known. The compressed refrigerant gas compressed from the compressor 20 flows through the pipe of the condenser 30 and is condensed by taking heat of condensation into air supplied from the outside. In this case, the condenser covers 32a, 32b, and 32c and the condenser brackets 34a and 34b form an air path so that air introduced from the outside is not supplied to the discharge part 11b without passing through the condenser 30. As a result, the outside air sucked in through the gap between the louver blades 8 of the intake area 7a is “bounced” along the air path formed by the condenser covers 32a, 32b, and 32c and the condenser brackets 34a and 34b. Heat exchange with the refrigerant gas flowing through the condenser pipe while passing through the magnetic condenser (30).

In particular, unlike the outdoor unit in which the outside air is sucked into the three sides and the air heat-exchanged to the upper surface is discharged, in the present invention employing the front suction discharge method, the suction part is limited, so the suction resistance is large in the system. Accordingly, the present invention is characterized by using a cross flow fan, unlike a conventional structure using an axial fan. That is, the cross flow fan 40 which supplies external air to the outdoor unit discharge part 11b to the air-cooled condenser 30 through the suction area 7a and discharges heat-exchanged air through the discharge area 7b. ) Is fixed to the side covers 12a, 12b, 12c and the top cover 16 by the fan frame 42 and the fan bracket 44. 3 shows an example in which a sirocco fan is used as an example of a cross flow fan. This cross flow fan is installed as shown in FIGS. 2 and 3 with the suction orifice 36 facing the side covers 12a, 12b.

In this case, since the motor 38 acts as a suction resistance, the air suction amount toward the orifice 36 where the motor 38 is installed is relatively small. In order to solve this load eccentricity, the present invention, as shown in Figure 3, the cross-flow fan 40, the center line (B) of the motor 38 with respect to the center line (A) of the air-cooled condenser (30). ) Is installed to be eccentric to the motor 38 is installed is another feature. As a result, the amount of air coming from both sides of the condenser 30 can be made uniform without being eccentric, so that the heat exchange efficiency can be improved, and thus the cooling efficiency can be increased.

In addition, as shown in Figure 2, in order to minimize the vibration caused by the operation of the fan to the system is required a fan support member for fixing the cross-flow fan 40 to the outdoor unit casing, these support members are shown The fan frame 42 for reinforcing and supporting the corners of the discharge portion, and the fan bracket 44 for connecting and fixing the side of the cross flow fan 40 to the fan frame 42. The shape of the fan bracket 44 may vary depending on the installation direction of the cross flow fan. In addition, as described above, when the outdoor unit casing is divided into a suction casing corresponding to the suction part 11a and a discharge casing corresponding to the discharge part 11b, the fan frame 42 reinforces and supports the discharge casing. do. Reference numeral 46 denotes a fanfront installed in front of the cross flow fan 40.

In addition, the control box 50 for controlling the operation of the outdoor unit is provided inside the side cover 12b constituting the back of the side cover, the refrigerant pipe under which the refrigerant gas evaporated from the indoor unit flows under the control box 50, the outdoor unit In the valve assembly 52 which is a passage of the refrigerant pipe through which the condensed refrigerant condensed in the flow is provided.

It looks at the operation of the outdoor unit for the air conditioner of the front suction method having the configuration as described above.

The refrigerant gas flowing from the indoor unit through the refrigerant pipe of the valve assembly 52 is compressed through the compressor 20 and supplied to the condenser 30. At this time, since the cooling fan 40 is operating, the air sucked in from the outside through the gap between the louver blades 8 of the suction area 7a is transferred to the condenser covers 32a, 32b, 32c and the condenser bracket 34a, The cooling fan 40 takes the heat of condensation from the refrigerant gas flowing through the condenser pipe inserted between the fins while evenly passing through the fins formed on the three sides of the “Ｕ” -shaped condenser 30 through the air passage made by 34b). Is discharged to the outside through the gap between the louver blades 8 of the discharge area 7b.

As described above, according to the present invention, it is possible to solve the problem of a decrease in heat exchange efficiency due to the reduction of the area of the suction unit in the outdoor unit for the air conditioner of the front suction discharge method. In addition, the large-capacity outdoor that is growing with the recent increase in air conditioning capacity

It is possible to provide an efficient installation structure in which the machine can be mounted as a wall recess.

Claims (6)

A rectangular parallelepiped outdoor unit casing whose one side facing outward is open and the top, bottom and three other sides are closed and whose interior is partitioned into the suction and discharge sections; A compressor installed in the outdoor unit casing and compressing a refrigerant gas supplied through a pipe from an indoor unit; An air-cooled condenser installed in the outdoor unit casing and condensing refrigerant gas supplied from the compressor; A cross flow fan installed in the outdoor unit casing to supply external air to the air-cooled condenser and discharge the heat-exchanged air to the outside, A suction orifice of the cross flow fan faces two sides which are in contact with the opened one side, and a motor of the cross flow fan is installed near the suction orifice which faces either one of the two sides, and the cross flow fan The outdoor unit for a front air suction type air conditioner, characterized in that the motor is installed eccentrically toward the center line of the air-cooled condenser. According to claim 1, wherein the outdoor unit further comprises a louver frame, the louver frame is fixed to the suction and discharge portion of the outdoor unit casing on the inner wall of the rectangular shape formed on the outer wall of the building, the outdoor unit Intake of the casing and It is divided into a suction area and a discharge area corresponding to the discharge portion, and includes a plurality of louver blades in each area, the air is sucked and discharged through the gap between these louver blades for the air conditioner of the front suction method Outdoor unit. The outdoor unit of claim 2, wherein the louver frame comprises an outer frame forming an edge, and an inner frame fastened to the outer frame and including a louver blade. The outdoor unit for an air conditioner according to any one of claims 1 to 3, wherein the discharge part of the outdoor unit casing further includes a fan support member for supporting the cooling fan. [5] The outdoor unit of claim 4, wherein the support member comprises a fan frame for reinforcing and supporting the corners of the discharge portion, and a fan bracket for connecting and fixing the fan side to the fan frame. . The front outdoor casing of claim 5, wherein the outdoor unit casing is divided into a suction casing corresponding to the suction unit and a discharge casing corresponding to the discharge unit, and the fan frame reinforces and supports the discharge casing. Outdoor unit for air conditioner.