KR100982857B1 - Front suction and discharge type outdoor unit for air-conditioner - Google Patents

Abstract

According to the present invention, one side facing outward is opened and the other sides are closed, and a rectangular parallelepiped outdoor unit casing in which the inside is divided into a suction part and a discharge part, and a refrigerant installed in the outdoor unit casing and supplied through a pipe from an indoor unit. A compressor for compressing gas, an air-cooled condenser installed in the outdoor unit casing and condensing refrigerant gas supplied from the compressor, and an air-cooled condenser installed in the outdoor unit casing, the portion of the housing opposite to the diffuser having a flat portion, Provided is an outdoor unit for an air conditioner of a front suction type having a sirocco cooling fan for supplying air to the air-cooled condenser and discharging the heat-exchanged air.

Description

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

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

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

Figure 3 shows a preferred example of installing a sirocco fan in the discharge portion of the outdoor unit shown in FIG.

FIG. 4 is a view for explaining a structure in which a portion opposite to the diffuser of the sirocco fan is formed in a flat portion according to the present invention.

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: Sirocco cooling fan 42: fan frame

44: fan bracket 46: fan front

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. The outdoor unit includes a compressor for compressing the refrigerant gas and supplying it to the condenser, and a refrigerant gas supplied from the compressor. 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, the air-cooled condenser and the cooling fan of the outdoor unit are housed inside the outdoor unit casing that forms the exterior. The conventional hexahedral outdoor unit casing has an air inlet for sucking air into an air-cooled condenser on three sides, and an air for discharging air absorbed from the refrigerant gas to the outside through heat exchange in an air-cooled condenser on its upper surface to the outside. The discharge part is provided.

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, all of the above-described prior arts only disclose a technique of inserting the outdoor unit itself into a space formed on the outer wall of a building, and in the case of the current outdoor unit adopting the front suction discharge method, which is increasing with the increase in air conditioning capacity, The area of the suction part is smaller than the conventional outdoor unit of the surface suction method, so that the suction resistance is increased, so that no solution has been proposed.

Accordingly, the present invention provides a sirocco cooling fan as large as possible within a limited area where the outdoor unit can be placed while minimizing the reduction of suction resistance by installing a sirocco cooling fan in the outdoor air conditioner of the front suction type. For the purpose of

Moreover, an object of this invention is to provide the installation structure which can install such a sirocco cooling fan effectively.

According to the present invention, one side facing outward is opened and the other sides are closed, and a rectangular parallelepiped outdoor unit casing in which the inside is divided into a suction part and a discharge part, and a refrigerant installed in the outdoor unit casing and supplied through a pipe from an indoor unit. A compressor for compressing gas, an air-cooled condenser installed in the outdoor unit casing and condensing refrigerant gas supplied from the compressor, and an air-cooled condenser installed in the outdoor unit casing, the portion of the housing opposite to the diffuser having a flat portion, Provided is an outdoor unit for an air conditioner of a front suction type having a sirocco cooling fan which supplies air to the air-cooled condenser and discharges heat-exchanged air.

Here, the outdoor unit preferably 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 casing It is divided into a suction region and a discharge region corresponding to the suction portion and the discharge portion of the, and includes a plurality of louver blades in each region, the air can be sucked and discharged through the gap between these louver blades.

Further, one of the suction orifices of the sirocco cooling fan faces toward the furthest side from the suction part while contacting an open one surface facing the discharge area of the louver frame among the remaining surfaces, and the other toward the suction part. Alternatively, the suction orifice of the sirocco cooling fan may face two surfaces in contact with an open one surface facing the discharge area of the louver frame among the remaining surfaces.

More preferably, the sirocco cooling fan may be fixed to a fan bracket extending from the discharge portion frame to the opposite discharge portion frame after contacting the flat portion of the fan housing, the casing inner surface facing the flat portion of the fan housing. It may be fixed in close contact.

Hereinafter, the present invention will be described in more detail with reference to one embodiment of the present invention and an air conditioner for cooling. 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.

The accompanying drawings show the structure of an outdoor unit for a front suction type air conditioner 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, and the combined outer frame 4 and the inner frame 6 are referred to as louver frames 4 and 6. 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.

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

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. A mesh-shaped front grill 60 is installed on the front of the outdoor unit casing, and contacts the open surfaces of the suction region and the discharge region of the inner frame 6 to prevent chipping of animals and the like. 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 14 is formed with a plurality of leg members 18a, 18b, 18c, and 18d protruding outwards, and these leg members 18a, 18b, 18c, and 18d are formed on the floor of the building, e. 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 directly 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 of the type in which the outside air is sucked into the three side surfaces and the air heat-exchanged to the upper surface is discharged, the suction surface is limited in the present invention employing the front suction discharge method, so the suction resistance is large in the system. Therefore, the present invention is characterized by using a sirocco fan, unlike the conventional structure using an axial fan. That is, in the present invention, a sirocco fan 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. 40 is provided as shown in the figure.

At this time, in order to increase the heat exchange capacity, it is necessary to increase the size of the impeller used in the sirocco cooling fan, which leads to an increase in the size of the housing of the sirocco cooling fan, which in turn increases the weight and volume of the sirocco cooling fan. On the contrary, if the outdoor unit is to be installed in a limited space, as the size of the outdoor unit casing decreases, the housing size of the sirocco cooling fan must also be reduced, thereby reducing the size of the impeller that can be used therein, resulting in the weight of the sirocco cooling fan. And a decrease in volume and a decrease in blowing capacity. However, the inventors of the present invention, when the size of the outdoor unit casing is limited, even if the curvature of the opposite side of the diffuser 41 is formed as a flat portion 40 'instead of reducing the size of the impeller of the sirocco cooling fan, the blowing pressure is kept equal. The present invention has been found to be complete. In this case, the strength of the housing may be achieved by forming the flat portion, and the interference with the casing is minimized, so that the fastening and fixing to the casing can be made very easy.

The sirocco cooling fan may be installed such that the suction orifice faces upward and downward, and the suction orifice 36 may face the side covers 12a and 12b. In the accompanying drawings, the suction orifice 36 is directed upward and downward. In one case, the sirocco cooling fan 40 is cascaded in order to minimize the impact of the vibration of the fan on the system. A pan support member is required for fixing to the As shown in the drawing, the fan members 42 reinforce and support the casing edges of the discharge part, and a fan bracket for connecting and fixing the flat part 40 'of the sirocco cooling fan 40 to the fan frame 42. (44) (the example of FIG. 3 is shown). The shape of the fan bracket 44 may vary depending on the installation direction of the sirocco cooling fan. At this time, the flat portion 40 'may be fixed to the side cover 12c by bringing it into close contact with the inner surface of the side cover 12c (shown in FIG. 4 as an example). In any case, since the fixing area of the fan is wider than that of the housing of the sirocco cooling fan having only the curvature, the vibration of the blowing fan can be effectively supported. 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 fan front installed in front of the sirocco cooling fan 40. Connection members 47 are formed in the fan front 46 to help fasten and fix the discharging end of the sirocco cooling 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 sirocco 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 cover 32a, 32b, 32c and the condenser bracket 34a. Sirocco cooling fan while taking the heat of condensation from the refrigerant gas flowing through the condenser pipe inserted between the fins evenly passing through the fins formed on the three sides of the "Ｕ" -shaped condenser 30 through the air passage made by 40 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, the sirocco cooling fan is installed in the outdoor air conditioner of the front suction and discharge type to minimize the reduction of the suction resistance and at the same time, the sirocco cooling as large as possible within the limited area where the outdoor unit can be located. The fan may be provided, and an installation structure may be provided to effectively support the vibration generated in the sirocco cooling fan.

Claims (8)

An outdoor unit casing in which the front face to the outside is open and the remaining faces are closed; A compressor installed in the outdoor unit casing and compressing the refrigerant gas supplied through the pipe from the indoor unit; An air-cooled condenser installed in the outdoor unit casing and condensing the refrigerant gas supplied from the compressor; A sirocco cooling fan installed in the outdoor unit casing and comprising an impeller and a fan housing accommodating the impeller, the fan housing having a curvature portion surrounding the impeller, an intake orifice for sucking air, and a diffuser configured to discharge air to the front of the outdoor unit casing. A sirocco cooling fan including a curvature opposite to the diffuser of the fan housing and having a planar shape; A fan frame positioned above the air-cooled condenser to support the sirocco cooling fan; and And a fan bracket connected to the fan frame to fix the flat part of the sirocco cooling fan. The method of claim 1, An outdoor unit casing is an outdoor unit for an air conditioner of a front suction type, characterized in that the inside is divided into a suction part and a discharge part. The method of claim 2, A louver frame installed facing the suction part and the discharge part of the outdoor unit casing and divided into a suction area and a discharge area; And, It includes; a plurality of louver blades provided in each region of the louver frame, An outdoor unit for an air conditioner of a front suction type, characterized in that air is sucked in / out through a gap of a louver blade. The method of claim 1, An outdoor unit for a front air suction / outflow air conditioner, wherein the suction orifice of the Sirocco cooling fan faces the upper and lower surfaces of the outdoor unit casing, respectively. The method of claim 1, An outdoor unit for an air conditioner of a front suction type, characterized in that the suction orifices of the sirocco cooling fans face both side portions of the outdoor unit casing. 6. The method according to any one of claims 1 to 5, An outdoor unit for an air conditioner according to a front suction method comprising a condenser cover and a condenser bracket for fixing and supporting an air-cooled condenser and forming a flow path of air introduced from the outside. An outdoor unit casing in which the front face to the outside is open and the remaining faces are closed; A compressor installed in the outdoor unit casing and compressing the refrigerant gas supplied through the pipe from the indoor unit; An air-cooled condenser installed in the outdoor unit casing and condensing the refrigerant gas supplied from the compressor; A sirocco cooling fan installed in the outdoor unit casing and comprising an impeller and a fan housing accommodating the impeller, the fan housing having a curvature portion surrounding the impeller, an intake orifice for sucking air, and a diffuser configured to discharge air to the front of the outdoor unit casing. And a sirocco cooling fan having a planar shape such that the opposite side of the fan housing is in close contact with the inner surface of the outdoor unit casing; And Fan frame for supporting the edge of the sirocco cooling fan; outdoor unit for a front air suction type air conditioner comprising a. delete

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