KR20080011510A - Out-door unit for air conditioner - Google Patents

Abstract

An outdoor unit for an air conditioner is provided to increase heat transfer efficiency by installing a drain fan for collecting condensed water between loaded outdoor heat exchangers. An outdoor unit for an air conditioner comprises a condenser condensing refrigerant such as medium of heat transfer, plural outdoor heat exchangers(200) heat transferring the refrigerant with external air, and a base fan supporting the condenser and the outdoor heat exchangers. The plural outdoor heat exchangers are vertically loaded from the upper part of the base fan and consist of a lower heat exchanger(220) installed at the upper part of the base fan, and an upper heat exchanger(240) placed at the upper part of the lower heat exchanger. Additionally, a drain pan(260) includes a collecting space to collect condensed water generated from an external part when the refrigerant is evaporated by the upper heat exchanger.

Description

Outdoor unit of air conditioner {Out-door unit for air conditioner}

1 is an exploded perspective view showing an internal configuration of a general multi-type air conditioner outdoor unit.

Figure 2 is a perspective view showing the appearance of the air conditioner outdoor unit according to the present invention.

Figure 3 is an exploded perspective view showing the internal configuration of the air conditioner outdoor unit according to the present invention.

Figure 4 is an exploded perspective view showing an outdoor heat exchanger constituting the main portion of the outdoor unit of the air conditioner according to the present invention.

Figure 5 is a longitudinal sectional view showing the shape of the drain pan in the air conditioner outdoor unit according to the present invention.

Explanation of symbols on the main parts of the drawings

100. Outdoor unit 102. Front panel

102 '. Piping Bracket 103. Front Frame

104. Side Grill 106. Rear Grill

106 '. Left Rear Grill 106 ". Right Rear Grill

108. Base Fan 108 '. Catchment

109. Rear frame 110. Top panel

110 '. Aerator 112. Fan motor

114. Blowing Fans 115. Shrouds

116. Discharge Grill 120. Compressor

122. Constant Speed Compressor 124. Inverter Compressor

126. Oil Separator 128. Valve Support

129. Service valve 130. Accumulator

140. Control box 142. Control cover

200. Outdoor heat exchanger 220. Bottom heat exchanger

222. Lower left heat exchanger 224. Lower right heat exchanger

240. Upper heat exchanger 242. Upper left heat exchanger

244. Upper right heat exchanger 260. Drain pan

262. Collecting space 264. Drain hole

266. Drain hose 268. Recessed space

The present invention relates to an outdoor unit of an air conditioner, and more particularly, to an outdoor unit of an air conditioner for stacking a plurality of outdoor heat exchangers in an upright state to improve heat exchange efficiency during heating operation.

In general, an air conditioner is a cooling / heating system that cools a room by a repetitive action of sucking a hot air in a room, exchanging heat with a low temperature refrigerant, and then discharging it into the room. A condenser, expansion valve, and evaporator that forms a series of refrigerant cycles.

In recent years, in addition to heating and cooling, there are many additional functions such as the air purifying function that sucks and filters contaminated air in the room and makes it into clean air and re-injects it into the room, and the dehumidification function that makes humid air into wet and dry air again. Is also serving.

The air conditioner is divided into an outdoor unit (sometimes called 'outside' or 'heat sink') mainly installed outdoors, and an indoor unit (sometimes called 'indoor' or 'heat absorbing side') mainly installed inside a building. The outdoor unit is provided with a condenser (outdoor heat exchanger) and a compressor, and the indoor unit is provided with an evaporator (indoor heat exchanger).

And, as is well known, air conditioners can be broadly divided into separate type air conditioners in which the outdoor unit and the indoor unit are separately installed, and integrated air conditioners in which the outdoor unit and the indoor unit are installed integrally, and separate type air conditioning in consideration of installation space or noise. The trend is a favored trend.

In addition, the separate air conditioner can be effectively applied when cooling / heating a plurality of spaces with one outdoor unit. That is, by installing a multi-type air conditioner, which is a type of separate air conditioner, in a building having several offices, efficient air conditioning of each office is possible.

In more detail, the multi-type air conditioner is connected to a plurality of indoor units in one outdoor unit, and the indoor units are installed in the room for air conditioning, respectively, thereby obtaining the effect of installing a plurality of air conditioners.

Hereinafter, a configuration of a general multi type air conditioner (hereinafter referred to as an air conditioner) outdoor unit will be described with reference to the accompanying drawings.

1 is an exploded perspective view showing the internal configuration of a general multi-type air conditioner outdoor unit.

As shown in the drawing, as shown in the drawing, the outdoor unit of the air conditioner has a base fan 2 on which a plurality of parts are seated, and the front of the base fan 2 has a front exterior. The front panel 4 to be formed is provided. The front panel 4 is configured to include a front upper panel 4 ′ provided at an upper side and a front lower panel 4 ″ provided at a lower side thereof.

In addition, the front lower panel 4 "is further provided with a pipe bracket 4" a. The pipe bracket 4 "a is to shield the cut-out portion at the lower right side of the front lower panel 4", and a plurality of pipes are inserted at the upper end, and these pipes are installed to communicate with the inside of the indoor unit. .

A center bracket 6 is installed between the front upper panel 4 'and the front lower panel 4 "to guide the mounting of the front upper panel 4' and the front lower panel 4". Meanwhile, an upper bracket 6 'is further installed at an upper end of the front upper panel 4', and the front end of the motor mount 58 'is fastened to the upper bracket 6'.

The front frame 8 is provided at the left and right ends of the front panel 4, that is, at the front left and right edges of the base pan 2. The front frame 8 is formed long and vertically to support the front panel 4 and the side grill 42 to be described below.

The base fan 2 is provided with a compressor 10. The compressor 10 is to compress the refrigerant to be a high temperature and high pressure, respectively provided on the left and right sides. That is, the constant speed compressor 10 'for constant speed operation is installed on the right side, and the inverter compressor 10 "is installed on the left side.

One side of the compressor 10 is provided with an oil separator 12, respectively. The oil separator 12 serves to filter oil mixed in the refrigerant discharged from the compressor 10, and the filtered oil is returned to the compressor 10 by the oil separator 12. It is recovered.

The valve support 14 is installed at a predetermined height at the left rear end of the base pan 2, and the service valve 16 is installed and supported at an upper end of the valve support 14.

An accumulator 20 is installed between the center portion of the base fan 2, more specifically, between the constant speed compressor 10 ′ and the inverter compressor 10 ″. The accumulator 20 includes the constant speed compressor 10 ′. And it is installed so as to communicate with the inverter compressor (10 "), respectively, the constant velocity compressor (10 ') and the inverter compressor (10") to introduce a refrigerant in the gas state.

The control box 30 is installed above the compressor 10. Although not shown, the control box 30 includes control components such as a voltage transformer and a capacitor, and a circuit board. A control cover 32 is provided at the front of the control box 30 to shield the inside of the control box 30.

The outdoor end heat exchanger 40 is provided at the side end and the rear end of the base fan 2. The outdoor heat exchanger (40) is provided in pairs on the left and right to heat exchange between the refrigerant flowing inside and the outside air.

That is, the left outdoor heat exchanger 40 'of the' ┏ 'shape (viewed from the top) is installed on the left side, and the right outdoor heat exchanger 40 "of the' ┓ 'shape (viewed from the top) is installed on the right side. The left outdoor heat exchanger 40 'and the right outdoor heat exchanger 40 "are formed slightly lower than the height of the outdoor unit.

The side grille 42 is installed at the left end and the right end of the base fan 2, and the rear grille 44 is installed at the rear end in the vertical direction. The back grill 44 is provided with a pair to correspond to the outdoor heat exchanger (40). That is, the left rear grill 44 'is installed at the rear of the left outdoor heat exchanger 40' and the right rear grill 44 'is installed at the rear of the right outdoor heat exchanger 40'.

A rear frame 46 is provided between the left rear grill 44 ′ and the right rear grill 44 ″ to fix the rear grill 44. The rear rear left and right edges of the base fan 2 include a rear portion. Frames 48 'are each formed.

On the other hand, the upper panel 50 is installed on the upper end of the side grill 42 and the rear grill (44). The upper panel 50 forms the outer appearance of the upper surface of the outdoor unit, and a pair of vent holes 52 are formed in the center to discharge the heat exchanged air in the outdoor unit to the outside of the outdoor unit.

A cylindrical shroud 54 is mounted on the upper edge of the vent hole 52. The shroud 54 is provided in a quantity corresponding to the number of the ventilation holes, and guides the flow direction of air discharged into the outdoor unit through the ventilation holes 52.

In addition, the discharge grill 56 is mounted on the upper end of the shroud 54. The discharge grill 56 prevents foreign matter from flowing into the outdoor unit through the opened upper portion of the shroud 54, and tightly arranges thin wires to be coupled to each other to regulate foreign material inflow.

Inside the shroud 54, a blowing fan 57 forcing a flow direction of air is installed. The blowing fan 57 is rotated by receiving power from the fan motor 58 that generates rotational power when the power is applied to discharge the air inside the outdoor unit to the outside.

That is, the fan motor 58 is supported by a motor mount 58 'formed in an approximately' + 'shape when viewed from above, and the motor mount 58' is fixedly mounted to one side of the upper surface of the base fan 2. The blowing fan 57 is able to maintain a stable state even if it is rotated quickly by receiving the rotational power from the fan motor 58.

However, the outdoor unit of the general air conditioner having the above configuration has the following problems.

That is, in the outdoor unit, the outdoor heat exchanger 40 has a height slightly lower than that of the outdoor unit, and is provided one each on the left and right sides.

Accordingly, when the air conditioner is operated in the heating mode, the outdoor heat exchanger 40 functions as an evaporator to generate condensate on the outer surface, and this condensate flows for a considerable time to flow along the outer surface of the outdoor heat exchanger 40. This is a factor that disturbs the contact between the outdoor heat exchanger (40) and the outdoor air.

In addition, as the contact between the outdoor heat exchanger 40 and the outdoor air is hindered, there is a problem that the heat exchange efficiency is lowered.

In addition, the heat exchange efficiency of the outdoor heat exchanger 40 is not preferable because it lowers the efficiency of the entire air conditioner.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and has a drain pan for stacking a plurality of outdoor heat exchangers having a reduced height in an upright state and collecting condensed water between the stacked outdoor heat exchangers. Therefore, the present invention provides an outdoor unit of an air conditioner configured to collect condensate generated in an outdoor outdoor heat exchanger to a drain pan.

Another object of the present invention is to provide an outdoor unit of an air conditioner to improve heat exchange efficiency by providing a separate drain hose so that condensed water generated in an outdoor heat exchanger located at an upper side thereof does not fall into an outdoor heat exchanger at a lower side thereof.

The outdoor unit of the air conditioner according to the present invention for achieving the above object, a compressor for compressing a refrigerant which is a working fluid, a plurality of outdoor heat exchangers for heat exchange between the refrigerant and outdoor air, and supports the compressor and the outdoor heat exchanger It is configured to include a base fan, characterized in that the plurality of outdoor heat exchangers are stacked up / down.

The outdoor heat exchanger is installed upright on the upper surface of the base fan.

The outdoor heat exchanger includes a lower heat exchanger installed on and supported by an upper surface of the base fan, and an upper heat exchanger installed on an upper side of the lower heat exchanger.

The lower end of the upper heat exchanger, the upper heat exchanger is characterized in that the drain pan is provided with a collecting space formed to collect the condensed water generated on the outer surface when the refrigerant passing through the inside.

The catchment space is characterized in that it corresponds to the cross-sectional size of the upper heat exchanger.

One side of the drain pan, characterized in that the drain hole for guiding the condensed water collected in the collecting space to flow to the outside of the drain pan.

A lower portion of the drain pan is provided with a recessed space recessed upward to accommodate the upper portion of the lower heat exchanger therein.

On one side of the upper surface of the base pan, a recess is formed in a shape corresponding to the cross section of the lower heat exchanger is provided with a collecting groove for collecting condensate generated on the outer surface of the lower heat exchanger.

According to the present invention having such a configuration, since the condensed water generated on the outer surface of the upper heat exchanger during the heating operation is blocked from moving to the lower heat exchanger, there is an advantage that the heat exchange efficiency is improved.

Hereinafter, a configuration of an outdoor unit of a multi-type air conditioner (hereinafter, referred to as an “air conditioner”) according to the present invention will be described with reference to the accompanying drawings. And, the outdoor unit of the air conditioner according to the present invention is the same as the conventional configuration except for the outdoor heat exchanger that is the main configuration will be briefly described.

Figure 2 is a perspective view showing the external configuration of the air conditioner outdoor unit according to the present invention, Figure 3 is an exploded perspective view showing the internal configuration of the air conditioner outdoor unit according to the present invention.

As shown in these figures, the outdoor unit 100 has an outer shape of a vertically long rectangular parallelepiped, and is configured to suck outside air to the left / right side and the rear side and to heat the sucked outside air inward and then discharge upward. do.

That is, the outdoor unit 100 includes a front panel 102 that shields the internal space of the outdoor unit 100 from the front, and forms a front appearance, and a side grill 104 that guides the inflow of external air to the left and right sides. , A rear grill (guiding point 106 of FIG. 3) for guiding the inflow of external air from the rear to the inside, a base fan 108 for supporting a plurality of parts, and an upper surface for guiding upward discharge of the heat exchanged air therein The exterior is formed by the panel 110.

And, the upper surface of the base fan 108 is provided with an outdoor heat exchanger 200 to heat the outdoor air, the lower side of the upper panel 110 is axially coupled with the fan motor 112 for generating rotational power and wind power Blowing fan 114 for generating a.

Therefore, when the blowing fan 114 rotates to generate an air flow upward, suction power is generated in the side grill 104 and the rear grill 106 so that the outdoor unit 100 can suck external air. Will be.

The front frame 103 is provided at left and right ends of the front panel 102, that is, at the front left and right edges of the base pan 108. The front frame 103 is formed long and vertically to support the front panel 102 and the side grill 104 to maintain the state coupled to each other.

A pipe bracket 102 ′ is provided at the front lower portion of the front panel 102. That is, the lower end of the front panel 102 is cut in a predetermined portion, and the pipe bracket 102 'is configured to shield the cut portion, and the pipe bracket 102' is in communication with an indoor unit (not shown) to allow refrigerant flow. Guide the refrigerant pipe (not shown) to be installed.

A rear grill 106 is provided at the rear end of the base fan 108, and the rear grill 106 includes a left rear grill 106 ′ and a right rear grill 106 ″.

In addition, between the left rear grill 106 ′ and the right rear grill 106 ″, a rear frame (107 in FIG. 3) for fixing the rear grill 106 is provided, and a rear end of the base fan 108 is provided. The rear frame 109 for coupling the rear grill 106 and the side grill 104 to each other is formed at the left and right corners.

The upper panel 110 is coupled to the upper end of the front panel 102 to be orthogonal, and a pair of cylinders for guiding air inside the outdoor unit 100 to be discharged to the outside at the center left and right of the upper panel 110. Pores (110 ′ in FIG. 3) are formed.

The shroud 115 is installed on the upper surface of the vent hole 110 ′. The shroud 115 has a cylindrical shape protruding upward, and guides the air discharged to the outside by the blowing fan 114 described above.

The upper end of the shroud 115 is provided with a discharge grill 116 of the wire mesh shape. The discharge grill 116 is configured to block the inflow of foreign matter into the outdoor unit 100 from the outside.

The blowing fan 114 is rotatably installed inside the shroud 115. That is, the blower fan 114 is axially coupled to the rotating shaft of the fan motor 112 located below, and the fan motor 112 is fixed to the lower upper surface of the motor mount 118.

The upper end of the motor mount 118 that is accommodated and restrained by the motor mount 118 is fixedly coupled to a lower surface of the upper panel 110. Therefore, the blower fan 114 can maintain a constant position inside the shroud 115.

The compressor 120 is installed on the left / right side of the upper surface of the base fan 108. The compressor 120 compresses the refrigerant so as to have a high temperature and high pressure. A constant speed compressor 122 that performs constant speed operation is installed on the right side, and an inverter compressor 124 is installed on the left side of the compressor 120.

One side of the compressor 120 is provided with an oil separator 126, respectively. The oil separator 126 serves to filter oil mixed in the refrigerant discharged from the compressor 120, and the filtered oil is returned to the compressor 120 by the oil separator 126. It is recovered.

The valve support 128 is installed upright at the left rear end of the base pan 108, and the service valve 129 is respectively installed and supported at the upper end of the valve support 128.

An accumulator 130 is installed between the center portion of the base fan 108, and more particularly, between the constant speed compressor 122 and the inverter compressor 124. The accumulator 130 is installed to communicate with the constant speed compressor 122 and the inverter compressor 124, respectively, and introduces a refrigerant in a gas state into the constant speed compressor 122 and the inverter compressor 124.

On the upper side of the compressor 120 is installed a control box 140 of a long rectangular parallelepiped shape. Although not shown, the control box 140 includes a control component such as a voltage transformer and a capacitor, and a circuit board therein.

In addition, a control cover 142 is provided at the front of the control box 140 to selectively shield the inside of the control box 140.

The side end and the rear end of the base fan 108 is provided with an outdoor heat exchanger (200). The outdoor heat exchanger 200 is configured to exchange heat between the refrigerant passing through the inside and the outdoor air, and the overall shape corresponds to the shape in which the side grill 104 and the rear grill 106 are coupled to each other. Therefore, the outdoor heat exchanger 200 is installed to stand upright on the upper surface of the base fan 108.

In addition, the outdoor heat exchanger 200 serves as a condenser for condensing the high temperature / high pressure gas refrigerant compressed from the compressor 120 when operating in a cooling mode, and from an expansion valve (not shown) when operating in a heating mode. It serves as an evaporator for evaporating heat exchanged low temperature / low pressure liquid refrigerant and outdoor air.

Therefore, the outdoor heat exchanger 200 generates condensed water on the outer surface when the air conditioner is operated in the heating mode, and the lower side of the outdoor heat exchanger 200, that is, the upper surface of the base fan 108, collects the water. A collecting groove 108 'is recessed. The catching groove 108 ′ is recessed in a shape corresponding to a cross section of the outdoor heat exchanger 200.

On the other hand, the outdoor heat exchanger 200 is provided in plurality. More precisely, each of the outdoor unit 100 is provided on the upper / lower side of the right corner and one on the upper / lower side of the left corner.

Hereinafter, the configuration of the outdoor heat exchanger 200 will be described in detail with reference to FIGS. 4 and 5.

4 is an exploded perspective view showing an exploded view of the outdoor heat exchanger constituting the main part in the outdoor unit of the air conditioner according to the present invention, and FIG. 5 is a longitudinal sectional view showing the shape of the drain pan in the outdoor unit of the air conditioner according to the present invention. Is shown.

As shown in these drawings, the outdoor heat exchanger 200 includes a lower heat exchanger 220 installed and supported on an upper surface of the base fan 108, that is, an upper side of the collecting groove 108 ′, The upper heat exchanger 240 is installed on the upper side of the lower heat exchanger 220, and the drain pan 260 is fitted between the upper heat exchanger 240 and the lower heat exchanger 220 is configured.

The lower heat exchanger 220 has a shape corresponding to each other and consists of a lower left heat exchanger 222 and a lower right heat exchanger 224 symmetrically installed left / right, and a left side surface of the lower left heat exchanger 222. The right side of the lower right heat exchanger 224 heat-exchanges the outdoor air introduced into the outdoor unit 100 through the lower half of the side grill 104.

And, the rear of the lower left heat exchanger 222 and the lower right heat exchanger 224 serves to heat exchange the outdoor air introduced into the outdoor unit 100 through the lower half of the rear grill 106.

In addition, the upper heat exchanger 240 has a shape corresponding to the lower heat exchanger 220, and is installed symmetrically from the upper side of the lower heat exchanger 220 to the left / right.

That is, the upper heat exchanger 240 also includes an upper left heat exchanger 242 and an upper right heat exchanger 244 like the lower heat exchanger 220, and the upper left heat exchanger 242 and the upper right side. The heat exchanger 244 heats the outdoor air introduced into the outdoor unit 100 through the upper half of the side grill 104 and the rear grill 106.

More specifically, the left side of the upper left heat exchanger 242 and the right side of the upper right heat exchanger 244 heat exchange the outdoor air introduced into the outdoor unit 100 through the lower half of the side grill 104. The rear surfaces of the upper left heat exchanger 242 and the upper right heat exchanger 244 heat exchange the outdoor air introduced into the outdoor unit 100 through the upper half of the rear grill 106.

The above-described drain pan 260 is provided between the lower heat exchanger 220 and the upper heat exchanger 240. The drain pan 260 has a shape that is slightly larger than the cross-sectional size of the upper heat exchanger 240 and the lower heat exchanger 220, and the water collecting space 262 is recessed in the upper portion of the drain pan 260.

The collecting space 262 accommodates and supports a lower portion of the upper heat exchanger 240 therein, and the collecting space 262 has an area corresponding to a cross section of the upper heat exchanger 240.

In addition, the collection space 262 also serves to collect condensate generated on the outer surface of the upper heat exchanger 240 when the outdoor heat exchanger 200 serves as an evaporator.

Therefore, the condensed water flowing down from the upper heat exchanger 240 is collected in the collecting space 262 to block the falling water to the lower heat exchanger 220.

One side of the collecting space 262, in more detail, a tip end of the drain pan 260 is provided with a drain hole 264 in communication with the collecting space 262. The drain hole 264 is for draining the condensed water collected in the water collecting space 262 to the outside of the drain pan 260, and the drain hose 266 communicating with the outside of the outdoor unit 100 on the outer surface of the drain hole 264. Is preferably connected.

Therefore, the condensed water collected in the collecting space 262 can be drained to the outside of the outdoor unit 100 via the drain hole 264 and the drain hose 266.

A recessed space 268 is formed below the collecting space 262, that is, below the drain pan 260. The recessed space 268 accommodates and supports an upper portion of the lower heat exchanger 220, and has an area corresponding to the cross-sectional size of the lower heat exchanger 220.

Therefore, when the upper portion of the lower heat exchanger 220 is inserted into the recessed space 268, and the lower portion of the upper heat exchanger 240 is inserted into the collecting space 262, the lower heat exchanger 220. And the top heat exchanger 240 are stacked in an upright state.

In addition, the lower heat exchanger 220 and the upper heat exchanger 240 are supported by the drain pan 260 to restrict the flow in the front and rear and left and right directions inside the outdoor unit 100.

Hereinafter, the operation of the outdoor unit of the air conditioner configured as described above will be described with reference to FIGS. 3 to 5 based on the refrigerant flow.

First, when the air conditioner operates in the cooling mode, the outdoor heat exchanger 200 of the outdoor unit 100 serves as a condenser to condense the high-temperature / high-pressure gaseous refrigerant fed from the compressor 120. The refrigerant condensed as described above is expanded into a low-temperature / low-pressure gas state while passing through an expansion valve (not shown) and flows into an indoor heat exchanger (not shown) installed inside an indoor unit (not shown).

The refrigerant introduced into the indoor heat exchanger is converted into a two-phase refrigerant in which gaseous and liquid states of low temperature / low pressure are mixed as heat is exchanged with indoor air. The refrigerant is passed through the accumulator 130 and then sent back to the compressor 120 to form one cycle of the refrigerant.

Next, when the air conditioner performs the heating operation, the flow of the refrigerant and the action of the heat exchanger are reversed. That is, the refrigerant compressed by the compressor 120 flows in the order of the accumulator 130-> indoor heat exchanger (not shown)-> expansion valve (not shown)-> outdoor heat exchanger 200.

At this time, the indoor heat exchanger serves as a condenser for heat exchange between the high temperature and high pressure refrigerant passing through the inside and the indoor air, and the outdoor heat exchanger 200 serves as an evaporator for heat exchanging the low temperature and low pressure refrigerant therein. .

Therefore, condensate is generated on the outer surface of the outdoor heat exchanger 200. That is, the condensate generated in the upper heat exchanger 240 and flowed down along the outer surface is collected in the collecting space 262 of the drain pan 260 and then through the drain hole 264 and the drain hose 266. By being drained outdoors, it is not in contact with the lower heat exchanger 220.

In addition, the condensed water generated on the outer surface of the lower heat exchanger 220 flows along the outer surface of the lower heat exchanger 220 and is collected into the collecting groove 108 ′ and then drained to the outside of the outdoor unit 100.

Hereinafter, the process of assembling the outdoor heat exchanger 200 on the upper surface of the base fan 108 will be described with reference to FIGS. 3 to 5.

First, the upper heat exchanger 240, the drain pan 260 and the lower heat exchanger 220, as shown in Figure 4 to the lower heat exchanger 220 is installed to be installed above the water collecting groove (108 '). do. When the installation of the lower heat exchanger 220 is completed, the upper portion of the lower heat exchanger 220 is inserted into the lower portion of the drain pan 260, that is, the recessed space 268, to exchange the lower heat exchanger with the drain pan 260. To combine groups 220.

Thereafter, the upper heat exchanger 240 is erected, and then the lower portion of the upper heat exchanger 240 is inserted into the water collecting space 262. In the above process, the assembly of the outdoor heat exchanger 200 is completed, and the appearance is completed as shown in FIG. 3.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the above technical scope.

For example, in the embodiment of the present invention, as the outdoor heat exchanger is divided into left and right sides and installed symmetrically, the drain pan also has a shape corresponding thereto, but within the range in which the outdoor heat exchanger is stacked up and down. If necessary, the shape of the drain pan can be variously changed.

In the outdoor unit of the air conditioner according to the present invention as described above in detail, a plurality of outdoor heat exchangers having a reduced height are stacked in an upright state, and a drain pan for collecting condensed water between the stacked outdoor heat exchangers is further configured.

Therefore, when the air conditioner is operated in the heating mode, the condensed water generated in the outdoor heat exchanger is collected and divided into the collecting groove and the collecting space, thereby improving the heat exchange efficiency of the outdoor heat exchanger.

In addition, as the heat exchange efficiency of the outdoor heat exchanger is increased, there is an advantage of maximizing the cooling / heating efficiency of the entire air conditioner.

In addition, the above-described advantages are desirable because the user can increase the reliability of the product.

Claims (8)

A compressor for compressing a refrigerant, which is a working fluid, A plurality of outdoor heat exchangers for exchanging the refrigerant and outdoor air; It comprises a base fan for supporting the compressor and the outdoor heat exchanger, The outdoor unit of the air conditioner, characterized in that the plurality of outdoor heat exchangers are stacked up and down. The outdoor unit of an air conditioner according to claim 1, wherein the outdoor heat exchanger is installed upright on an upper surface of the base fan. According to claim 1, The outdoor heat exchanger, A lower heat exchanger installed and supported on an upper surface of the base fan; An outdoor unit of an air conditioner, comprising an upper heat exchanger installed above the lower heat exchanger. The lower end of the upper heat exchanger, The outdoor unit of the air conditioner, characterized in that the drain pan is provided with a collecting space to collect the condensate generated on the outer surface when the upper heat exchanger evaporates the refrigerant passing through the inside. 5. The outdoor unit of an air conditioner according to claim 4, wherein the collecting space corresponds to a cross sectional size of the upper heat exchanger. According to claim 5, One side of the drain pan, The outdoor unit of the air conditioner, characterized in that the drain hole for guiding the condensed water collected in the collecting space to flow to the outside of the drain pan. The method of claim 4, wherein the lower portion of the drain pan, The outdoor unit of the air conditioner, characterized in that the recessed space is recessed upward to accommodate the upper portion of the lower heat exchanger therein. According to claim 3, At one side of the upper surface of the base pan, The outdoor unit of the air conditioner is recessed in a shape corresponding to the cross section of the lower heat exchanger is provided with a collecting groove for collecting condensate generated on the outer surface of the lower heat exchanger.

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