KR20030036366A - Front suction and discharge type outdoor unit for air-conditioner - Google Patents

Abstract

PURPOSE: A front side suction and discharge type outdoor unit for air conditioner is provided to evenly utilize a condenser. CONSTITUTION: An outdoor unit comprises an outdoor unit casing having a side facing the outside opened and the other sides including an upper side and a bottom side closed, and having an inside divided into a suction part(11a) and a discharge part(11b); a compressor installed in the outdoor unit casing to compress refrigerant vapor supplied from an indoor unit through a tube; an air-cooled condenser(30) installed in the suction part of the outdoor unit casing to condense refrigerant vapor supplied from the compressor with heat exchange with outside air, and divided into an upper condenser placed on an upper part of the suction part and a lower condenser placed on a lower part of the suction part so that quantity of heat exchange in the upper condenser is larger than quantity of heat exchange in the lower condenser; and a cooling fan(40) installed in the outdoor unit casing to supply outside air to the air-cooled condenser and to discharge air having exchanged heat.

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. 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, 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 condenser structure capable of uniformly utilizing the condenser as a whole in an outdoor unit for an air conditioner of the front suction type, and is an air conditioner for a front suction type that matches the outdoor unit of the conventional structure or brings heat exchange efficiency higher. It is an object to provide an outdoor unit.

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 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 according to the embodiment shown in FIG. 1.

3a and 3b exemplarily show the flow of intake air according to the bending size R of the condenser in the outdoor unit.

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

40: cooling fan 42: fan support member

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. Compressor for compressing the refrigerant gas supplied through the air, and a condenser installed in the suction unit of the outdoor unit casing to condense the refrigerant gas supplied from the compressor by heat exchange with the outside air, the upper portion located above the suction unit It is divided into a condenser and a lower condenser positioned below the suction unit, and the air-cooled condenser having a large heat exchange amount in the upper condenser compared to the heat exchange amount in the lower condenser is installed in the outdoor unit casing, and supplies external air to the air-cooled condenser. Front suction with cooling fan to exhaust heat exchanged air It provides an air conditioner outdoor unit of the system.

Here, the outdoor unit further comprises a louver frame, the louver frame

Silver is fixedly installed on the inner wall of the rectangular space formed on the outer wall of the building facing the suction and discharge portion of the outdoor unit casing, divided into suction and discharge regions corresponding to the suction and discharge portion of the outdoor unit casing, Air may be sucked in and discharged through a gap between these louver blades, including a plurality of louver blades in the 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 condenser has a "Ｕ" shaped cross section with a predetermined gap with the sides while simultaneously facing the open one side facing the suction region of the louver frame and the two side facing the open one side. It is preferable that the magnitude | size R value of the said "'" shape bend is two times or more of the magnitude | size D value of the said clearance gap. Further, a condenser support member comprising a first support member fixedly supporting the condenser on the second side at both ends of the condenser, and a second support member fixedly supporting the condenser on the second side at the upper end of the condenser. In addition, it is better to prevent the outside air sucked through the suction region of the louver frame from leaking outside without passing through the condenser.

In the above case, the fin pitch of the upper condenser is made smaller than the fin pitch of the lower condenser so that the heat exchange amount in the upper condenser is larger than the heat exchange amount in the lower condenser, or the condenser pipe pitch of the upper condenser is increased in the lower condenser. The heat exchange amount in the upper condenser is larger than the heat exchange amount in the lower condenser, or the heat exchange rate in the upper condenser is set to 2 or more and the lower condenser piping hot water of the upper condenser is 2 or more. The amount may be made larger than the amount of heat exchange in the lower condenser.

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.

1 to 3b shows 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. Of outdoor unit

If the opening and closing according to the operation is high risk of failure and inconvenient repair, it is sufficient to determine the air intake and discharge direction in consideration of the external environment and to keep the louver blade 8 open in a certain direction.

On the other hand, the outdoor unit 10 fixedly installed inside the building outer wall 2 so as 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. 3 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 air-cooled condenser 30 uses the condenser covers 32a, 32b, and 32c and the condenser brackets 34a and 34b. It is fixedly supported by the side covers 12a and 12b and the bottom cover 14. Although the figure shows a preferred example of a condenser having a cross-sectional shape of a "Ｕ" shape, any shape of the condenser may be used. However, in the outdoor unit of the front-side suction / discharge system of the present invention, the wind speed at the upper portion of the condenser 30 close to the discharge portion 11b is far from the lower portion of the condenser 30 far from the discharge portion 11b. Will be faster than However, in order to utilize the condenser as a whole, it is better to increase the heat exchange amount at a relatively high wind speed and to reduce the heat exchange amount at a relatively slow wind speed. Therefore, the present invention divides the condenser 30 into an upper condenser positioned above the suction part and a lower condenser positioned below the suction part, and the heat exchange amount in the upper condenser is designed to be larger than the heat exchange amount in the lower condenser. It is characterized by.

For this configuration, the fin pitch of the upper wind speed fast condenser can be made smaller than the fin pitch of the slow wind speed lower condenser, so that the heat exchange amount in the upper condenser is larger than the heat exchange amount in the lower condenser. have. In this case, the fins of the upper condenser are more dense and the fins of the lower condenser are more sparse, so that the amount of heat exchange in the upper condenser becomes larger than the amount of heat exchange in the lower condenser, thereby making full use of the condenser.

In addition, the condenser pipe pitch of the upper condenser having a high wind speed can be made smaller than the pipe pitch of the lower condenser with a slow wind speed, so that the heat exchange amount in the upper condenser can be larger than the heat exchange amount in the lower condenser. Even in this case, since the pipes of the upper condenser are more dense and the pipes of the lower condenser are more sloppy, the heat exchange amount in the upper condenser becomes larger than the heat exchange amount in the lower condenser so that the condenser can be utilized as a whole.

In addition, the condenser tube row number of the upper condenser with a high wind speed is 3 or more, and the pipe heat number of the lower condenser with a low wind speed is 2, and the heat exchange amount in the upper condenser is larger than that in the lower condenser. You can also Even in this case, since the piping hot water of the upper condenser is larger than the piping hot water of the lower condenser, the heat exchange amount in the upper condenser is larger than the heat exchange amount in the lower condenser, thereby making it possible to utilize the condenser as a whole.

In a preferred embodiment of the invention, the condenser 30 faces one side facing the suction region 7a of the inner frame 6 and two sides facing the first side, ie side covers 12a and 12b simultaneously. It has a cross-sectional shape of "Ｕ" shaped and has a certain gap with the side surfaces. Therefore, the outside air sucked through the suction region 7a passes directly through the condenser 30 or passes through the gap between the side covers 12a and 12b and the condenser 30 and passes through the condenser 30. By the way, when the value of R, which is the size of bending, is small in the cross-sectional shape of the condenser 30, as shown by arrows A and A 'of FIG. 4A, the air heated by heat exchange while passing through the condenser is again covered by the side cover 12a. 12b) and the gap between the condenser and then passes between the fins of the condenser 30 to reduce the heat exchange efficiency. Therefore, the inventors studied through the numerical analysis the relationship between the D value which is the gap distance between the side covers 12a and 12b and the condenser and the magnitude R value of the bending of the condenser 30, and then the minimum R value is The result was that it should be at least twice the D value. In such a case, as shown in FIG. 4B, the hot air passing through the condenser 30 is no longer flowed back into the gap between the side covers 12a and 12b and the condenser 30. Of course, as the size of the R value increases further, the possibility is further eliminated, but in this case, since the pipe length of the condenser 30 per unit area is reduced, the heat exchange efficiency is also lowered. Here, R value is defined as the radius of the arc which comprises the bending part of the condenser 30.

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. However, in the present invention, the condenser cover 32a, 32b, 32c described above is fixedly supported on the side cover 12a, 12b at the top of the condenser 30, and the condenser brackets 34a, 34b) fixedly supports the condenser 30 to the side covers 12a and 12b at both ends of the condenser 30, so that outside air entering through the gap between the side covers 12a and 12b and the condenser 30 Guided through the condenser 30. However, 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 condenser covers 32a, 32b, and 32c are separated from each other. It should be fixed to the suction casing. That is, the condenser cover 32a, 32b, 32c and the condenser brackets 34a, 34b are tightly fixed to the side covers 12a, 12b and / or the suction casing (when the outdoor air casing is separated), and the inner frame 6 The outside air sucked in through the suction region 7a of the guide) is guided to pass through the condenser 30 and is prevented from leaking to other outside such as the discharge part 11b without passing through the condenser 30.

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. 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 the outdoor unit discharge part 11b, the cooling fan 40 which supplies external air to the air-cooled condenser 30 through the suction area 7a and discharges heat-exchanged air through the discharge area 7b is cooled. The fan support member 42 and the cooling fan bracket 44 are fixed to the side covers 12a, 12b, 12c and the top cover 16. Although the drawing shows a sirocco fan as an example of the cooling fan 40, any kind of cross flow fan or axial fan including the sirocco fan may be used. Reference numeral 46 denotes a fan front installed in front of the 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 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 region 7b.

As described above, according to the present invention, in order to solve the problem of lowering of the heat exchange efficiency according to the reduction of the area of the suction unit in the outdoor unit for the air conditioner of the front suction and discharge method to provide an outdoor unit structure that can utilize the condenser as a whole. In addition, using this

The present invention provides an efficient installation structure for installing a wall-mounted outdoor unit having a large capacity, which is growing with the recent increase in air conditioning capacity.

Claims (8)

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; Condenser is provided in the suction part of the outdoor unit casing for condensing the refrigerant gas supplied from the compressor by heat exchange with the outside air, an upper condenser located above the suction part and a lower condenser located below the suction part. An air-cooled condenser, which is partitioned and whose heat exchange amount in the upper condenser is larger than that in the lower condenser, Is installed in the outdoor unit casing, the outdoor unit for the front air suction type air conditioner, characterized in that consisting of a cooling fan for supplying the outside air to the air-cooled condenser and discharge the heat exchanged air. 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 It is divided into a suction region and a discharge region corresponding to the suction portion and the discharge portion of the casing, a plurality of in each region An outdoor unit for an air conditioner according to a front suction type, characterized in that air is sucked in and discharged through a gap between the louver blades including a louver blade. 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. 2. The condenser according to claim 1, wherein the condenser has a predetermined gap with the sides while simultaneously facing the open one side facing the suction region of the louver frame and the two side facing the open one side. It is installed to have a cross section of, the "R" shaped bent size R value is more than twice the size D value of the gap, the outdoor air absorber outdoor unit for air conditioner. 2. The apparatus of claim 1, further comprising a first support member fixedly supporting the condenser on the second side at both ends of the condenser, and a second support member fixedly supporting the condenser on the second side at the uppermost end of the condenser. Further comprising a condenser support member, the outside air sucked through the suction region of the louver frame passes through the condenser. An outdoor unit for an air conditioner of a front suction type, characterized by preventing leakage to the outside without a vacuum. The fin pitch of the upper condenser is made smaller than the fin pitch of the lower condenser, so that the heat exchange amount in the upper condenser is larger than the heat exchange amount in the lower condenser. The outdoor unit for the air conditioner of the front suction-absorption system. The condenser piping pitch of the upper condenser is smaller than the piping pitch of the lower condenser so that the heat exchange amount in the upper condenser is larger than the heat exchange amount in the lower condenser. An outdoor unit for an air conditioner of a front suction and discharge system characterized by the above-mentioned. The heat exchange amount in the upper condenser is larger than the heat exchange amount in the lower condenser according to any one of claims 1 to 5, wherein the condenser piping hot water of the upper condenser is 3 or more and the lower condenser piping hot water is 2. An outdoor unit for an air conditioner of a front suction type discharge system, characterized in that one.