KR102355854B1 - Outdoor unit of air conditioner - Google Patents

Abstract

An air conditioner according to an embodiment of the present invention includes an outdoor unit of an air conditioner connected to at least one indoor unit, comprising: a blowing fan disposed above the outdoor unit; a top cover forming an upper surface of the outdoor unit and having a discharge port through which air is discharged from the blowing fan; a base fan forming a lower surface of the outdoor unit and having a compressor mounted thereon; a heat exchanger mounted on the base fan and bent along a circumference of the base fan; and an outer panel forming at least a portion of a circumferential surface of the outdoor unit and having a plurality of suction ports through which outdoor air is introduced into the heat exchanger, wherein the heat exchanger is disposed along the left side, rear side, right side, and front side of the outdoor unit. an upper heat exchanger extending along the left side, rear side, and right side of the outdoor unit, the lower heat exchanger being positioned below the upper heat exchanger, the lower end of the upper heat exchanger and the side end of the lower heat exchanger An opening of the outdoor unit is defined by the

Description

Outdoor unit of air conditioner

The present invention relates to an outdoor unit of an air conditioner.

An air conditioner is a home appliance for maintaining indoor air in the most suitable state according to use and purpose. For example, it adjusts the indoor to a cool cooling state in summer and a warm heating state in winter, also adjusts the indoor humidity, and adjusts the indoor air to a pleasant clean state.

In detail, in the air conditioner, a refrigeration cycle for performing compression, condensation, expansion, and evaporation of the refrigerant is driven, and accordingly, a cooling or heating operation of an indoor space may be performed.

Such an air conditioner may be divided into a separate type air conditioner in which an indoor unit and an outdoor unit are separated from each other, and an integrated air conditioner in which an indoor unit and an outdoor unit are combined into one device, depending on whether the indoor unit and the outdoor unit are separated. The outdoor unit includes an outdoor heat exchanger exchanging heat with outdoor air, and the indoor unit includes an indoor heat exchanger exchanging heat with indoor air.

When the refrigeration cycle performs a cooling operation, the outdoor heat exchanger functions as a condenser, and the indoor heat exchanger functions as an evaporator. On the other hand, when the refrigerating cycle performs a heating operation, the indoor heat exchanger functions as a condenser and the outdoor heat exchanger functions as an evaporator.

Meanwhile, in recent air conditioners, a plurality of outdoor units are disposed outdoors, such as on the roof of a building, and an indoor unit that independently cools and cools each indoor space is connected to the outdoor unit to form a refrigerant circuit. .

Japanese Patent Application Laid-Open No. 2013-113546 discloses an outdoor unit of an air conditioner according to the prior art. In the conventional outdoor unit, each component constituting a refrigeration cycle including a compressor is mounted on an upper surface of a base fan, and an outdoor heat exchanger is disposed along the circumference of the base fan. The outdoor heat exchanger may be configured to be exposed to four sides of the outdoor unit in order to increase heat exchange performance, and may be formed to have a maximum area in an installable area by increasing the height thereof. Also, there is disclosed a structure in which a blower fan is provided at the upper center of the outdoor unit to be sucked in from a side surface on which the outdoor heat exchanger is disposed and to discharge air upward.

However, since the air conditioner according to the prior art has a structure in which the outdoor heat exchanger is disposed all the way to the front, when the outdoor heat exchanger is installed or a compressor mounted on the base fan is installed, the configuration is performed from the top down. It can only be installed while moving. Therefore, it is difficult to assemble the outdoor unit.

In addition, even when a service situation occurs, workability is very poor because work is possible only through the part where the gap between the outdoor heat exchangers is formed. Because it is concentrated, there is a problem in that it is not easy to arrange the components inside the outdoor unit.

In addition, when a structure surrounding the compressor is implemented to remove noise, this structure covers the outdoor heat exchanger located on the front side of the outdoor unit from the rear, thereby preventing smooth air flow and eventually reducing the air volume. degradation problems may arise.

It is an object of the present invention to provide an outdoor unit of an air conditioner in which assembling work and service work performance of each component constituting an outdoor heat exchanger provided inside an outdoor unit and a refrigeration cycle are improved.

Another object of the present invention is to provide an outdoor unit of an air conditioner with improved heat exchange efficiency and cooling/heating capability.

In an outdoor unit of an air conditioner according to an embodiment of the present invention, an outdoor unit of the air conditioner connected to at least one indoor unit includes: a blowing fan disposed above the outdoor unit; a top cover forming an upper surface of the outdoor unit and having a discharge port through which air is discharged from the blowing fan; a base fan forming a lower surface of the outdoor unit and having a compressor mounted thereon; a heat exchanger mounted on the base fan and bent along a circumference of the base fan; and an outer panel forming at least a portion of a circumferential surface of the outdoor unit and having a plurality of suction ports through which outdoor air is introduced into the heat exchanger, wherein the heat exchanger is disposed along the left side, rear side, right side, and front side of the outdoor unit. an extended upper heat exchanger; and a lower heat exchanger located below the upper heat exchanger and extending along left, rear, and right sides of the outdoor unit, wherein an opening of the outdoor unit is formed by a lower end of the upper heat exchanger and a side end of the lower heat exchanger. characterized by being defined.

The upper heat exchanger is connected to an upper end of the lower heat exchanger, and the height of the lower heat exchanger is equal to or greater than that of the compressor.

The compressor is characterized in that it is arranged behind the area of the opening.

A noise shield for preventing the noise of the compressor from leaking to the outside by wrapping the compressor with a suction or sound insulating material is further provided.

The upper heat exchanger and the lower heat exchanger may include: a first distribution pipe in which a pipe connected to the indoor unit is branched to be connected to the upper heat exchanger and provided with a first valve device; a second distribution pipe in which a pipe connected to the indoor unit is branched and connected to the lower heat exchanger, the second distribution pipe having a second valve device; It characterized in that it further comprises a connecting pipe connecting the lower heat exchanger in the first distribution pipe, the third valve device is provided.

A drain member for guiding drainage of the condensed water of the upper heat exchanger is further provided in the opening.

The drain member may include: a drain pan extending from a lower side of the upper heat exchanger along the upper heat exchanger and collecting the condensed water therein; and a drain tube communicating with the drain pan and extending toward a drain hole or a drain passage of the base pan to guide the condensed water.

The outer panel includes a suction panel that shields a portion of a front surface of the outdoor unit, and the suction panel includes: a shielding unit that shields an upper portion where the blower fan is located; a plurality of inlet openings in an area corresponding to the upper heat exchanger; It characterized in that it comprises a heat exchange shield for shielding the lower portion corresponding to the opening.

In addition, the outdoor unit of the air conditioner according to the embodiment of the present invention, in the outdoor unit of the air conditioner connected to at least one indoor unit, forms an upper surface of the outdoor unit, and a discharge port through which air is discharged from the blowing fan is formed. top cover; a base fan forming a lower surface of the outdoor unit and having a compressor mounted thereon; a heat exchanger mounted on the base fan and bent along four perimeters of front, rear, left, and right sides of the base fan; and an outer panel forming at least a portion of a circumferential surface of the outdoor unit and having a plurality of inlets through which outdoor air flows into the heat exchanger, wherein the heat exchangers are connected to each other in a variable pass manner and are vertically arranged to be in contact with each other. It is composed of an upper heat exchanger and a lower heat exchanger, wherein the lower heat exchanger is formed to be shorter than a horizontal length of the upper heat exchanger, and a vertical height is formed to be higher than a height of the compressor.

According to the outdoor unit of the air conditioner according to the embodiment of the present invention, the outdoor heat exchanger includes an upper heat exchanger and a lower heat exchanger, and the lower heat exchanger has a shorter front surface than the upper heat exchanger, so that the length of the front surface of the outdoor heat exchanger is shorter. It has a structure that can be mounted while moving forward and backward using the lower space of the upper heat exchanger without interfering with each other during installation or when the compressor or other components are installed. Accordingly, it is possible to assemble the outdoor heat exchanger without equipment such as a lifting device, and thus, an effect of improving assembly workability can be expected.

In addition, there is an advantage in that, when a service situation occurs for inspection or maintenance of the inside of the outdoor unit, the service operation of components constituting the refrigeration cycle inside the outdoor unit, including the compressor, is easier through the lower space of the upper heat exchanger.

In addition, the height of the space under the upper heat exchanger is formed to be equal to or higher than the height of the compressor to facilitate installation and service of the compressor, as well as not interfere with the flow of air passing through the outdoor heat exchanger. The compressor is in close contact with the front so that the space inside the outdoor unit can be efficiently used.

In addition, even when a noise shield surrounding the compressor and the oil separator is provided, there is an advantage in that the flow of air passing through the outdoor heat exchanger is not affected.

And, in the structure in which the blower fan of the outdoor heat exchanger is located upward, the lower heat exchanger with low air volume and high pressure loss has three sides and the upper heat exchanger with high air volume has four sides, so that more Refrigerant induction becomes possible, thereby improving heat exchange efficiency and heating/cooling performance.

1 is a perspective view of an outdoor unit of an air conditioner according to an embodiment of the present invention.
2 is an exploded perspective view showing a coupling structure of components constituting the exterior of the outdoor unit.
3 is a plan view showing the inside of the outdoor unit.
4 is an exploded perspective view showing the coupling structure of the outdoor heat exchanger of the outdoor unit.
5 is a front view showing an open state of the front panel of the outdoor unit.
6 is a view showing the configuration of a refrigerant circuit of the outdoor unit.
7 is a view showing the main configuration of an outdoor heat exchanger according to an embodiment of the present invention.
8 is a perspective view illustrating an air flow state of the outdoor unit.
9 is a perspective view of an air conditioner according to another embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention will be able to easily suggest other embodiments within the scope of the same spirit.

1 is a perspective view of an outdoor unit of an air conditioner according to an embodiment of the present invention. And, FIG. 2 is an exploded perspective view showing a coupling structure of components constituting the exterior of the outdoor unit. 3 is a plan view showing the inside of the outdoor unit.

As shown in the drawings, the air conditioner according to an embodiment of the present invention includes an outdoor unit disposed outdoors and an indoor unit (not shown) disposed indoors. The indoor unit includes an indoor heat exchanger (not shown) that exchanges heat with air in the indoor space.

The outdoor unit 1 is formed in a hexahedral shape. A cover plate 10 is formed on an upper surface of the outdoor unit 1 , and a pair of discharge ports 11 are formed on the cover plate 10 . In addition, a discharge grill 111 is mounted on the discharge port 11 to prevent foreign substances from flowing into the discharge port 11 .

Meanwhile, side supporters 60 are provided at four corners of the outdoor unit 1 . The side supporter 60 may be bent to form a corner portion of the outdoor unit 1 , or may be formed in a pipe shape.

In addition, an outer panel 70 is provided between the side supporters 60 to form a peripheral surface of the outdoor unit 1 . The outer panel 70 forms side panels 71 forming left and right side surfaces of the outdoor unit 1 , a front panel 74 forming a front surface of the outdoor unit 1 , and a rear surface of the outdoor unit 1 . It may be composed of a rear panel 72 that

In detail, the side panel 71 forms the left and right sides of the outdoor heat exchanger 100 , and connects the adjacent side supporters 60 , the base fan 40 and the cover plate 10 . It may be formed in a single plate shape.

The side panel 71 has a structure in which a shielding part 771 is formed on an upper portion and a plurality of suction ports 772 are formed on a lower portion of the shielding part 771 . The shielding part 771 is formed at a position corresponding to a position where the shroud 20 for guiding the discharge air and the fan motor assembly 21 are disposed. The suction port 772 is uniformly formed throughout the area in which the outdoor heat exchanger 100 that exchanges heat with the sucked air is located, and guides the air sucked in from the side to pass through the outdoor heat exchanger 100 . .

In addition, in the right side panel 711 forming the right side (as seen in FIG. 2 ) of the outdoor unit 1 among the side panels 71 , an intake port 772 is formed in the entire part except for the shielding part 771 . do. In addition, in the left side panel 712 of the side panel 71 forming the left side (as seen in FIG. 2 ) of the outdoor unit, the suction port 772 is provided in the remaining area except for the shielding part 771 and a part of the front part area. ) is formed.

That is, in the left side panel 712, the intake port 772 is formed only up to the area where the outdoor heat exchanger 100 extends, and the first half area of the left side panel 712 is where the components constituting the refrigeration cycle are concentrated. It may be formed to shield the part.

Meanwhile, on the rear surface of the outdoor unit 1, a rear panel 72 is provided at a portion corresponding to a portion where the shroud 20 and the fan motor assembly 21 are located. In addition, a suction grill 73 is formed from the lower end of the rear panel 72 to the base fan 40 . The suction grill 73 is formed in a grid shape by a plurality of wires and has a size corresponding to that of the outdoor heat exchanger 100 positioned at the rear side of the outdoor unit 1 . Accordingly, the suction grill 73 protects the outdoor heat exchanger 100 from external shocks or foreign substances, and allows the inflow of external air smoothly.

Of course, in the embodiment of the present invention, it has been described that the rear surface of the outdoor unit 1 is formed by the rear panel 72 and the suction grill 73 , but the rear surface of the outdoor unit 1 is the side panel 71 . It may be formed in the same shape as

In addition, a plurality of front panels 74 are provided on the front surface of the outdoor unit 1 . The front panel 74 may include a service panel 75 , a pipe panel 76 , and a suction panel 77 .

In detail, the front surface of the outdoor unit 1 is divided into left and right sides based on a point at which the outdoor heat exchanger 100 extends. That is, the service panel 75 and the pipe panel 76 may be provided on the left side of the outdoor unit 1 , and the suction panel 77 may be provided on the right side of the outdoor unit 1 .

The service panel 75 is disposed at a position corresponding to the extended end of the outdoor heat exchanger 100 from the left end of the outdoor unit 1 . In addition, the service panel 75 is configured to be independently detachable while the front panel 74 is all mounted. Accordingly, by detaching the service panel 75 , it is configured to access the internal components of the outdoor unit 1 .

In particular, when the service panel 75 is opened, the entire control box 57 may be exposed to the front, and each component constituting the refrigeration cycle and a refrigerant pipe connecting them may be easily accessed.

Meanwhile, the service panel 75 may further include a service door 752 , and the service door 752 is mounted to independently open and close the service window 751 formed in the service panel 75 . . The service window 751 is opened at a position corresponding to a position in which components requiring frequent confirmation and manipulation among the main components of the control box 57 are arranged. Therefore, when a user or operator wants to check whether the air conditioner is abnormal or to set it, the service door 752 is opened without the need to remove the entire service panel 75 and the inside of the control box 57 is Access to the main parts and do the work.

The pipe panel 76 is for passing and fixing the indoor unit connecting pipe 58 connecting the outdoor unit 1 and the indoor unit, and is disposed between the lower end of the service panel 75 and the base fan 40 . provided The pipe panel 76 is formed to have the same width as the service panel 75 , and the service panel 75 may be separated while the pipe panel 76 is fixedly mounted to the base pan 40 . formed to be

A pipe installation hole 761 is formed in the pipe panel 76 through which a plurality of indoor unit connection pipes 58 that can be connected to the indoor unit pass therethrough. A service valve is installed in the pipe installation hole 761 to facilitate connection and installation of the indoor unit connection pipe 58 connected to the indoor unit. The pipe panel 76 may be integrally formed with the service panel 75 if necessary.

Meanwhile, the suction panel 77 forms the remaining front exterior of the outdoor unit 1 excluding the service panel 75 and the pipe panel 76 , and the outdoor heat exchanger disposed on the front surface of the outdoor unit 1 . (100) is formed to be able to shield. The suction panel 77 may extend from the cover plate 10 to the base pan 40 , and may extend from the side supporter 60 to the service panel 75 and the pipe panel 76 .

The suction panel 77 may extend to an end of the outdoor heat exchanger 100 , and the second plate 103b to which the end of the outdoor heat exchanger 100 is fixed and the suction panel 77 . The ends of the are configured to be coupled to each other. Accordingly, the outdoor heat exchanger 100 can be maintained in a stable fixed state by the suction panel 77 .

In addition, a shielding part 771 is formed on the suction panel 77 to shield the shroud 20 and the fan motor assembly 21, and the area of the outdoor heat exchanger under the shielding part 771 is A plurality of suction ports 772 are formed in the area corresponding to the , so that external air can flow toward the outdoor heat exchanger 100 .

Meanwhile, a heat exchange shield 773 is formed under the suction panel 77 . The heat exchange shield 773 is formed to shield the lower region of the upper heat exchanger 100a constituting the outdoor heat exchanger 100 , that is, the opening 100c formed on the side of the lower heat exchanger 100b. .

The size of the heat exchange shield 773 is formed to correspond to the opening 100c, and the suction port 772 of the suction panel 77 is a region between the shield 771 and the heat exchange shield 773 . , and an area in which the suction port 772 is formed corresponds to an area of the upper heat exchanger 100a located in front of the outdoor unit 1 .

A shroud 20 is mounted on an inner upper portion of the outdoor unit 1 , and a fan motor assembly 21 is provided inside the shroud 20 . The shroud 20 is for guiding the discharge air, it is opened in the vertical direction, the side surfaces are formed to be rounded in a shape that the center is depressed inward, and the opening is formed so that the opening becomes wider toward the upper side from the center part. In addition, the opened upper surface of the shroud 20 has the same shape as the discharge port 11 , so that the discharge air can be effectively guided to the discharge port 11 .

The fan motor assembly 21 includes a motor and a blowing fan 211 , which are respectively disposed inside the shroud 20 to force the air to be discharged. Although not shown in detail, the fan motor assembly 21 is seated on a mounting member 30 , and the shroud 20 is also mounted on the mounting member 30 and fixed to the inner upper portion of the outdoor unit 1 . can become To this end, the mounting member 30 may be coupled to one side of the outer panel 70 forming the side surface of the outdoor unit 1 .

The outdoor unit 1 has a bottom surface formed by a base fan 40 . In addition, the outdoor unit 1 may be supported by the base frame 41 to be spaced apart from the floor surface. In addition, components such as compressors 51 and 52 and outdoor heat exchanger 100 for constituting a refrigeration cycle may be disposed on the upper surface of the base fan 40 .

In detail, the compressors 51 and 52 may be provided in the first half of the base frame 41 . The compressors 51 and 52 may be formed to be in close contact with one side of the outdoor heat exchanger 100 positioned in front of the outdoor unit 1 to facilitate entry and exit through the opening 100c, which will be described below.

The compressors 51 and 52 allow the gaseous refrigerant to be compressed at high temperature and high pressure, and a constant speed compressor that rotates at a constant speed and compresses it to a predetermined capacity, and the rotational speed is variable according to the load to control the compression capacity. Possible inverter compressors are provided, respectively, and may be defined as a first compressor 51 and a second compressor 52 .

A first oil separator 53 and a second oil separator 54 for separating oil contained in the refrigerant discharged from the compressors 51 and 52 are provided in refrigerant pipes connected to the outlets of the compressors 51 and 52, respectively. is provided

Meanwhile, the first compressor 51 and the second compressor 52 , and the first oil separator 53 and the second oil separator 54 are shielded by the noise shield 59 . The noise shield 59 is to block noise generated during the operation of the first compressor 51 and the second compressor 52, and the first oil separator 53 and the second oil separator 54, The first compressor 51 and the second compressor 52, and the first oil separator 53 and the second oil separator 54 are covered with a sound absorbing material or a sound insulating material so as to prevent noise from being emitted to the outside. is composed

In addition, a four-way valve 55 is provided to selectively supply the refrigerant passing through the oil separators 53 and 54 to the indoor heat exchanger (not shown) or the outdoor heat exchanger 100 side. .

The four-way valve 55 is respectively connected to the indoor heat exchanger, the outdoor heat exchanger 100, the compressors 51 and 52, and the accumulator 56, and the refrigerant discharged from the compressors 51 and 52 is used for cooling operation or It is configured such that the flow path can be switched to selectively supply the indoor heat exchanger and the outdoor heat exchanger 100 according to the heating operation.

The accumulator 56 is configured to be connected to the indoor heat exchanger and the four-way valve 55 at one side of the base fan 40 . The accumulator 56 separates the incoming liquid refrigerant from the gaseous refrigerant so that the liquid refrigerant is stored and the gaseous refrigerant is supplied to the compressors (51 and 52). is provided

The outdoor heat exchanger 100 allows outdoor air and refrigerant to exchange heat, and the outdoor air is forcibly passed through the outdoor heat exchanger 100 by the blowing fan 211 of the outdoor heat exchanger 100, to allow heat exchange.

4 is an exploded perspective view showing the coupling structure of the outdoor heat exchanger of the outdoor unit. And, FIG. 5 is a front view showing a state in which the front panel of the outdoor unit is opened.

As shown in the drawing, the outdoor heat exchanger 100 is disposed along the circumference of the base fan 40 and is bent to be disposed along the circumference of the outdoor unit 1 . The outdoor unit is divided into an upper heat exchanger 100a and a lower heat exchanger 100b. The upper heat exchanger 100a and the lower heat exchanger 100b may be selectively connected by a refrigerant pipe, and the path through which the refrigerant flows may be varied according to the operating state of the air conditioner.

The upper heat exchanger 100a is bent so as to be exposed over four peripheral surfaces of the outdoor unit 1 . In detail, the upper heat exchanger 100a extends from the front central portion to the right end of the outdoor unit 1, extends rearward along the entire right side of the outdoor unit 1, and again covers the entire rear surface of the outdoor unit 1 Accordingly, it extends to the left side of the outdoor unit 1 and extends from the rear end of the left side of the outdoor unit 1 to the central portion.

That is, the upper heat exchanger 100a may be disposed on four circumferential surfaces of the outdoor unit 1 excluding a portion of the front surface of the outdoor unit 1 and a portion of the left side in contact therewith. Accordingly, the outdoor unit 1 can suck in air from all four sides of its circumference and heat exchange through the upper heat exchanger 100a.

In addition, the lower heat exchanger 100b is bent so as to be exposed over three peripheral surfaces of the outdoor unit 1 . In detail, the lower heat exchanger 100b extends rearward along the entire right side of the outdoor unit 1 of the outdoor unit 1 , and again along the entire rear surface of the outdoor unit 1 on the left side of the outdoor unit 1 . and extends from the rear end of the left side of the outdoor unit 1 to the center.

That is, the lower heat exchanger 100b may be disposed on three circumferential surfaces of the outdoor unit 1 excluding the front surface of the outdoor unit 1 and a portion of the left side in contact therewith. Accordingly, the outdoor unit 1 can suck in air from three peripheral surfaces and heat exchange through the lower heat exchanger 100b.

Also, an opening 100c may be defined at a lower portion of the upper heat exchanger 100a, ie, at the left side of the lower heat exchanger 100b by the lower heat exchanger 100b. The opening 100c is exposed to the outside when the suction panel 77 is opened to provide a structure that allows access to the inside of the outdoor unit 1 .

In addition, the height H1 of the lower heat exchanger 100b, that is, the distance from the base fan 40 to the upper end of the lower heat exchanger 100b, is the height H2 of the compressors 51 and 52, that is, The distance from the base fan 40 to the upper ends of the compressors 51 and 52 may be equal to or higher than the distance.

Accordingly, the height of the opening 100c is also formed to be equal to or higher than the height of the compressors 51 and 52, and thus, services such as maintenance or replacement of the compressors 51 and 52 through the opening 100c. configured to work.

A drain member 80 may be provided in the opening 100c. The drain member 80 is for draining the condensed water generated in the upper heat exchanger 100a, and is located vertically below the upper heat exchanger 100a located in front of the outdoor unit 1, and the opening It is located on the region of (100c).

The drain member 80 may include a drain pan 81 positioned below the upper heat exchanger 100a and a drain tube 82 extending downward from the drain pan 81 .

In detail, the drain pan 81 collects the condensed water falling from the upper heat exchanger 100a, and the upper surface is opened to form a predetermined space in which the condensed water can be collected. The drain pan 81 may be formed to correspond to the horizontal length of the opening 100c, supported by the drain tube 82, or mounted on the outdoor heat exchanger 100 or the front panel 77. can be

The drain tube 82 communicates with the drain pan 81 , and extends downward from the bottom of the drain pan 81 to serve as a drain hole or drain passage formed in the base pan 40 . It is formed to guide the condensate of The drain tube 82 may be disposed at both ends of the drain pan 81 to discharge condensed water, and may support the drain pan 81 .

On the other hand, the coupling plate for fixing the outdoor heat exchanger 100 includes a first plate 103a for fixing the left ends of the upper heat exchanger 100a and the lower heat exchanger 100b at the same time, and the upper heat exchanger 100a ) may be composed of a second plate 130b for fixing the right end, and a third plate 103c for fixing the right end of the lower heat exchanger 100b. At this time, since the right ends of the upper heat exchanger 100a and the lower heat exchanger 100b are separated from each other, the second plate 130b and the third plate 103c are also mounted on the front panel 77 while being separated from each other. can be

Meanwhile, a control box 57 for controlling the operation of the outdoor unit 1 is provided in an area of the front surface of the outdoor unit 1 where the outdoor heat exchanger 100 is not disposed. The control box 57 is disposed adjacent to the front surface of the outdoor unit 1 and is located inside the area covered by the service panel 75 so that an operator can easily separate the service panel 75 when a service situation occurs. designed to be easily accessible.

6 is a view showing the configuration of a refrigerant circuit of the outdoor unit. And, Figure 7 is a view showing the main configuration of the outdoor heat exchanger according to an embodiment of the present invention.

Looking at the configuration of the refrigerant circuit of the outdoor unit according to the embodiment of the present invention in more detail with reference to the drawings, the outdoor unit 1 includes the first compressor 51 and the second compressor 52 connected in parallel, and the Oil separators 53 and 54 for separating oil from the refrigerant discharged from the first compressor 51 and the second compressor 52 are provided at the outlets of the first compressor 51 and the second compressor 52 . do.

A discharge temperature sensor 501 for sensing the temperature of the compressed refrigerant may be provided at the outlet side of the first compressors 51 and 52 and the second compressor 52 , respectively.

In addition, the oil separators 53 and 54 include a first oil separator 53 disposed on the outlet side of the first compressor 51 and a second oil separator disposed on the outlet side of the second compressor 52 . (54) is included.

The outdoor unit 1 includes a recovery passage 502 for recovering oil from the oil separators 53 and 54 to the compressors 51 and 52 . The recovery passage 502 extends from each outlet side of the first oil separator and the second oil separator 54 and is combined, and the combined passage is an inlet of the first compressor 51 and the second compressor 52 . It can be connected to the side piping.

A dryer 503 and a capillary 504 may be installed in the recovery passage 502 .

At the outlet side of the oil separators 53 and 54, a high-pressure sensor 505 for detecting the high-pressure discharge of the refrigerant discharged from the compressors 51 and 52 and the refrigerant that has passed through the high-pressure sensor 505 is transferred to an outdoor heat exchanger ( 100) or a four-way valve 55 guiding toward the indoor unit is provided.

When the air conditioner performs a cooling operation, the refrigerant flows into the outdoor heat exchanger 100 from the four-way valve 55 . On the other hand, when the air conditioner performs a heating operation, the refrigerant flows from the four-way valve 55 to the indoor heat exchanger side of the indoor unit.

When the air conditioner performs a cooling operation, the refrigerant condensed in the outdoor heat exchanger 100 passes through the main expansion valve 160 , and at this time, the main expansion valve 160 is completely opened to reduce the refrigerant pressure. I never do that. That is, the main expansion valve 160 may be installed on the outlet side of the outdoor heat exchanger 100 based on the cooling operation. The main expansion valve 160 may include an Electric Expansion Valve (EEV).

The refrigerant that has passed through the main expansion valve 160 passes through the heat sink 165 . The heat sink 165 may be provided in the control box 57 provided with a heat generating component.

For example, the heating component may include a power module (Intelligent Power Module, IPM, intelligent power module). The IPM is understood as a module in which a driving circuit of a power device such as a power MOSFET or IGBT for controlling power and a protection circuit of a self-protection function are installed.

The condensed refrigerant is coupled to the heat sink 165 to cool the heat generating component.

The outdoor unit 1 further includes a supercooling heat exchanger 170 into which the refrigerant passing through the heat sink 165 flows, and a supercooling distributor 171 provided at the inlet side of the supercooling heat exchanger 170 to branch the refrigerant. do. The supercooling heat exchanger 170 functions as an intermediate heat exchanger in which the first refrigerant circulating in the system and a portion of the first refrigerant (second refrigerant) are branched and then heat exchanged.

Here, the first refrigerant flows into the supercooling heat exchanger 170 through the supercooling distributor 171 and may be supercooled by the second refrigerant. On the other hand, the second refrigerant may absorb heat from the first refrigerant.

The air conditioner 10 includes a supercooling flow path 173 provided at the outlet side of the supercooling heat exchanger 170 to branch the second refrigerant from the first refrigerant. In addition, a supercooling expansion device 175 for depressurizing the second refrigerant is provided in the supercooling passage 173 . The supercooling expansion device 175 may include an Electric Expansion Valve (EEV).

The second refrigerant of the supercooling passage 173 may flow into the supercooling heat exchanger 170 to exchange heat with the first refrigerant, and then flow toward the inlet of the accumulator 56 . The outdoor unit 1 further includes a supercooling discharge temperature sensor 176 that detects the temperature of the second refrigerant that has passed through the supercooled heat exchanger 170 .

The accumulator 56 is configured to separate the gaseous refrigerant before the refrigerant flows into the compressors 51 and 52 . The separated gaseous refrigerant may be introduced into the compressors 51 and 52 .

In the process of driving the refrigeration cycle, the evaporated refrigerant may flow into the accumulator 56 through the four-way valve 55 , and at this time, the evaporated refrigerant passes through the supercooling heat exchanger 170 . It is combined with and introduced into the accumulator 56 .

A suction temperature sensor 506 for detecting the temperature of the refrigerant to be sucked into the compressors 51 and 52 may be provided at the inlet side of the accumulator 56 .

Meanwhile, the first refrigerant that has passed through the supercooling heat exchanger 170 may flow into the indoor unit through the indoor unit connection pipe 58 . The air conditioner 10 is provided at the outlet side of the supercooling heat exchanger 170, and the liquid pipe temperature for detecting the temperature of the first refrigerant passing through the supercooling heat exchanger 170, that is, the temperature of the supercooled refrigerant. A sensor 178 is further included.

Hereinafter, the outdoor heat exchanger 100 and its surrounding configuration will be described in more detail.

In the outdoor unit (1), a first inlet/out pipe (101a) connected from the four-way valve (55) to one side of the outdoor heat exchanger (100) and the main expansion valve (160) from the other side of the outdoor heat exchanger (100) ) and a second input/exit pipe (101b) extending to is included.

For example, the first entry/exit pipe 101a is connected to the upper part of the header 105, that is, the upper header 105a, and the second entry/exit pipe 101b is the lower part of the header 105, that is, the lower header ( 105b).

During the cooling operation of the air conditioner, the refrigerant flows into the upper heat exchanger 100a through the first inlet/outlet pipe 101a, passes through the upper heat exchanger 100a, and then flows into the lower heat exchanger 100b. , the refrigerant passing through the lower heat exchanger 100b is discharged from the outdoor heat exchanger 100 through the second inlet/outlet pipe 101b.

On the other hand, during the heating operation of the air conditioner, the refrigerant flows into the upper heat exchanger 100a and the lower heat exchanger 100b through the second inlet/outlet pipe 101b, and the upper heat exchanger 100a and the lower The heat exchanger 100b is discharged from the outdoor heat exchanger 100 through the first input/exit pipe 101a.

The outdoor heat exchanger 100 includes a refrigerant pipe 102 forming a stage with a plurality of rows. For example, a plurality of refrigerant pipes 102 may be provided to form two rows in a horizontal direction and a plurality of stages in a vertical direction, and a plurality of refrigerant pipes 102 may be disposed to be spaced apart from each other.

The plurality of refrigerant pipes 102 may be bent to extend long. As an example, with reference to FIG. 7 , the plurality of refrigerant pipes 102 may be configured to extend forward again after extending to the rear of the ground. In this case, the plurality of refrigerant pipes 102 may have a U shape.

The outdoor heat exchanger 100 further includes a coupling plate 103 supporting the refrigerant pipe 102 . The coupling plate 103 includes a first plate 103a that simultaneously supports one side of the refrigerant pipe 102 having the bent shape of the upper heat exchanger 100a and the lower heat exchanger 100b, and the upper heat exchange A second plate 130b supporting the other side of the unit 100a, and a third plate 103c supporting the other side of the lower heat exchanger 100b are included.

In this case, the first plate 103a may be positioned on the left side of the outdoor unit 1 , and the second plate 103b may be positioned on the front side of the outdoor unit 1 . In addition, the outdoor heat exchanger 100 is bent along the circumference of the base fan 40 so that both ends can be fixed to the first plate 103a and the second plate 103b. It can be arranged over four sides of the circumference.

The outdoor heat exchanger 100 has a return pipe 104 coupled to the ends of the plurality of refrigerant pipes 102 to guide the refrigerant flowing through one refrigerant pipe 102 to the other refrigerant pipe 102 . Included. A plurality of return pipes 104 are provided, and are coupled to one side of the first plate 103a, the second plate 103b, and the third plate 103c.

The outdoor heat exchanger 100 further includes a header 105 that forms a refrigerant flow space. The header 105 branches and introduces the refrigerant into the plurality of refrigerant pipes 102 or combines the refrigerants heat-exchanged in the plurality of refrigerant pipes 102 depending on whether the air conditioner is in a cooling or heating operation. can be configured to The header 105 is elongated in the vertical direction to correspond to the extending direction of the first plate 103a.

A plurality of header connection pipes 132 extend between the header 105 and the first plate 103a. The plurality of header connection pipes 132 are connected to a refrigerant pipe 102 extending from the header 105 and supported by the first plate 103a. In addition, the plurality of header connection pipes 132 may be disposed to be spaced apart from each other in the vertical direction.

During the cooling operation of the air conditioner, the refrigerant in the header 105 may be introduced into the refrigerant pipe 102 through the plurality of header connection pipes 132 . On the other hand, during the heating operation of the air conditioner, the refrigerant of the refrigerant pipe 102 may be introduced into the header 105 through the header connection pipe 132 .

The air conditioner further includes a plurality of distributors 110 and 120 for branching and introducing the refrigerant into the outdoor heat exchanger 100 based on the heating operation. The plurality of distributors 110 and 120 includes a first distributor 110 and a second distributor 120 .

In addition, in the outdoor unit 1, a first distribution pipe 111 and a second distribution pipe 121 branching from the second inlet/outlet pipe 101b to the first distributor 110 and the second distributor 120 are provided. This includes more The first distribution pipe 111 and the second distribution pipe 121 may extend from the branch portion 101c to the first distributor 110 and the second distributor 120 .

In the outdoor unit (1), a first valve device (115) and a second distribution pipe (121) installed in the first distribution pipe (111) to control the amount of refrigerant flowing through the first distribution pipe (111) A second valve device 125 that is installed in the second distribution pipe 121 and can control the amount of refrigerant flowing through it is further included.

The first valve device 115 and the second valve device 125 may include an electronic expansion valve capable of adjusting an opening degree.

The outdoor unit 1 further includes a plurality of capillary tubes 107 extending from the first distributor 110 and the second distributor 120 to the plurality of refrigerant pipes 102 . During the heating operation of the air conditioner, the refrigerant is branched into the first distributor 110 and the second distributor 120 , and flows to the refrigerant pipe 102 through a plurality of capillary tubes 107 , respectively.

The outdoor unit 1 further includes a branch pipe 109 connecting the plurality of capillary tubes 107 and the refrigerant pipe 102 . The branch pipe 109 may branch the refrigerant flowing through the capillary tube 107 in two directions to branch into one refrigerant pipe 102 and another refrigerant pipe 102 . For example, the branch pipe 109 may include a branch pipe having a Y shape. A plurality of branch pipes 109 may be provided corresponding to the number of the plurality of capillary tubes 107 .

During the heating operation of the air conditioner, the refrigerant flowing into the refrigerant pipe 102 through the plurality of capillary tubes 107 connected to the first distributor 110 exchanges heat with the upper header of the header 105 . It flows into (105a). Then, the refrigerant flowing into the refrigerant pipe 102 through the plurality of capillary tubes 107 connected to the second distributor 120 is heat-exchanged and then flows into the lower header 105b of the header 105 .

That is, the header 105 includes an upper header 105a communicating with the first distributor 110 and a lower header 105b communicating with the second distributor 120 . 3, an imaginary dividing line l1 dividing the upper header 105a and the lower header 105b is indicated.

The outdoor unit further includes a check valve 140 installed between the upper header 105a and the lower header 105b. The check valve 140 permits refrigerant flow from the lower header 105b to the upper header 105a and restricts the refrigerant flow from the upper header 105a to the lower header 105b.

Accordingly, during the heating operation of the air conditioner, the refrigerant flowing into the refrigerant pipe 102 through the second distributor 120 flows into the lower header 105b after heat exchange, and is It may be guided and flow to the upper header 105a. The refrigerant introduced into the refrigerant pipe 102 through the first distributor 110 flows into the upper header 105a after heat exchange, and is combined with the refrigerant introduced from the lower header 105b, 1 It can flow through the inlet and outlet pipe (101a).

The outdoor unit 1 further includes a connection pipe 130 extending from one point of the first distribution pipe 111 to the lower header 105b. A third valve device 135 for controlling a refrigerant flow rate in the connection pipe 130 may be installed in the connection pipe 130 . For example, the third valve device 135 may include a solenoid valve capable of on/off control or an electronic expansion valve capable of adjusting the opening degree.

During the cooling operation of the air conditioner, the refrigerant flowing from the first distributor 110 to the first distribution pipe 111 may be introduced into the lower header 105b through the connection pipe 130 .

Hereinafter, a refrigerant flow in the air conditioner during a heating operation and a cooling operation of the air conditioner will be described with reference to FIGS. 6 and 7 .

First, when the air conditioner performs a heating operation, the high-temperature and high-pressure refrigerant compressed in the first and second compressors 51 and 52 passes through the first and second oil separators 53 and 54 to separate oil and The separated oil returns to the first and second compressors 51 and 52 through the recovery passage 502 . Then, the refrigerant from which the oil is separated flows toward the indoor unit through the four-way valve 55 .

The refrigerant flowing into the indoor unit is condensed in the indoor heat exchanger, and the condensed refrigerant flows into the supercooling heat exchanger 170 through the indoor unit connection pipe 58 . At this time, a portion of the refrigerant may be branched into the supercooling flow path 173 and decompressed in the supercooling expansion device 175 , and may flow into the supercooling heat exchanger 170 .

Accordingly, the condensed refrigerant and the refrigerant flowing through the supercooling passage 173 may exchange heat with each other, and the condensed refrigerant may be supercooled.

The supercooled refrigerant passing through the supercooling heat exchanger 170 may cool the heat generating part of the electric unit while passing through the heat sink 165 , and may be reduced in pressure in the main expansion valve 160 .

The depressurized refrigerant may be branched from the branch unit 101c to the first distribution pipe 111 and the second distribution pipe 121 and may be introduced into the first distributor 110 and the second distributor 120, respectively. . At this time, the first valve device 115 and the second valve device 125 may be opened more than a set opening degree. For example, the first valve device 115 and the second valve device 125 may be fully opened.

The refrigerant flowing to the first distributor 110 flows into the refrigerant pipe 102 through the plurality of capillary tubes 107 and flows into the upper header 105a after heat exchange. Then, the refrigerant flowing to the second distributor 120 flows into the refrigerant pipe 102 through the plurality of capillary tubes 107 , and then flows into the lower header 105b after heat exchange. In this case, the refrigerant may be evaporated in the process of heat exchange.

The refrigerant flowing into the lower header 105b flows into the upper header 105a, and is combined with the refrigerant flowing into the upper header 105a. At this time, the refrigerant of the lower header 105b may flow to the upper header 105a via the check valve 140 (refer to the dotted arrow).

The combined refrigerant may be discharged through a first inlet/outlet pipe 101a connected to the upper header 105a, flows into the accumulator 56 through the four-way valve 55, and the separated gaseous refrigerant is converted into the first ,2 may be sucked into the compressors 51 and 52 . This cycle may be repeated.

In this way, during the heating operation of the air conditioner 10 , the refrigerant may be simultaneously introduced into the upper heat exchanger 100a and the lower heat exchanger 100b through the first distributor 110 and the second distributor 120 . In addition, heat exchange may be performed using both the first distributor 110 side flow path and the second distributor 120 side flow path.

Accordingly, while the refrigerant flow path in the outdoor heat exchanger 100 is shortened, the number of paths branching to the outdoor heat exchanger 100 increases. As a result, the evaporation efficiency can be improved by reducing the pressure loss of the refrigerant and thereby preventing the reduction of the evaporation pressure.

Next, when the air conditioner performs a cooling operation, the high-temperature and high-pressure refrigerant compressed in the first and second compressors 51 and 52 passes through the first and second oil separators 53 and 54 to separate oil. and the separated oil returns to the first and second compressors 51 and 52 through the recovery passage 502 . Then, the refrigerant from which the oil has been separated flows through the four-way valve 55 to the first inlet/outlet pipe 101a and flows into the header 105 of the outdoor heat exchanger 100 .

The refrigerant flowing into the header 105 is present in the upper header 105a and is restricted from flowing into the lower header 105b by the check valve 140 .

The refrigerant of the upper header 105a flows into the refrigerant pipe 102 of the upper heat exchanger 100a fixed to the first plate 103a through the plurality of header connection pipes 132 . The refrigerant in the refrigerant pipe 102 flows to the plurality of capillary tubes 107 through the branch pipe 109 after heat exchange. At this time, the refrigerant may be primarily condensed in the process of heat exchange.

The refrigerants of the plurality of capillary tubes 107 are combined in the first distributor 110 , and are introduced into the lower header 105b through the first distribution pipe 111 and the connection pipe 130 . At this time, the first valve device 115 is closed, and the flow of the refrigerant to the branch portion 101c is restricted. And, the third valve device 135 is turned on or opened more than a set opening degree, thereby allowing the refrigerant to flow into the connection pipe 130 .

The refrigerant flowing into the lower header 105b flows into the refrigerant pipe 102 of the lower heat exchanger 100b fixed to the first plate 103a through the plurality of header connection pipes 132 . In addition, the refrigerant may be secondarily condensed while flowing through the refrigerant pipe 102 of the plurality of lower heat exchangers 100b.

The secondary condensed refrigerant flows into the second distributor 120 through the branch pipe 109 and the plurality of capillary tubes 107 . Then, the refrigerant of the second distributor 120 flows through the second inlet/outlet pipe 101b through the second distribution pipe 121 and the branch unit 101c, and is discharged from the outdoor heat exchanger 100 .

The refrigerant discharged from the outdoor heat exchanger 100 may flow toward the indoor unit through the heat sink 165 and the supercooling heat exchanger 170 . After the refrigerant expands and evaporates in the indoor unit, the refrigerant may be sucked into the first compressor 51 and the second compressor 52 through the four-way valve 55 and the accumulator 56 . This cycle may be repeated.

In this way, during the cooling operation of the air conditioner, the refrigerant flowing into the outdoor heat exchanger 100 is primarily condensed in the refrigerant pipe 102 of the upper heat exchanger 100a connected to the upper header 105a. , by secondary condensation in the refrigerant pipe 102 of the lower heat exchanger 100b connected to the lower header 105b side, the refrigerant flow path is lengthened, while the number of paths branched to the refrigerant pipe 102 will decrease. Consequently, it is possible to improve the condensation efficiency by increasing the flow rate of the refrigerant and thus reducing the condensation pressure.

Hereinafter, the flow of air by the operation of the outdoor unit as described above will be described.

8 is a perspective view illustrating an air flow state of the outdoor unit.

As shown in the drawing, when the operation of the air conditioner starts, the refrigerant is compressed by the driving of the compressors 51 and 52, and the compressed refrigerant circulates in a refrigeration cycle. In this case, when the air conditioner is in a cooling operation, the outdoor heat exchanger 100 functions as a condenser, and the flow of air is forced for heat exchange with the refrigerant passing through the outdoor heat exchanger 100 .

That is, the blowing fan 211 is rotated by the driving of the fan motor simultaneously with the driving of the compressors 51 and 52 . Due to the rotation of the blower fan 211 , the air outside the outdoor unit 1 is sucked through four surfaces of the outdoor unit 1 and passes through the outdoor heat exchanger 100 , and the outdoor heat exchanger 100 . The air introduced into the outdoor unit 1 through the shroud 20 may pass through the blowing fan 211 and be discharged to the discharge port 11 while passing through the shroud 20 .

At this time, among the air flowing into the outdoor unit 1 from the outside of the outdoor unit 1 , the air sucked in from the front of the outdoor unit is introduced into the outdoor unit through a suction port formed in the suction panel.

Accordingly, the air introduced into the suction port 772 of the suction panel 77 passes through the upper heat exchanger 100a, and the upper heat exchanger 100a is air sucked from four surfaces of the outdoor unit 1 . is heat exchanged with In addition, the lower heat exchanger 100b exchanges heat with air sucked from three surfaces of the outdoor unit 1 except for the front surface of the outdoor unit 1 .

At this time, the lower heat exchanger 100b is far from the blowing fan 211, so the air volume is small, whereas the upper heat exchanger 100a is close to the blowing fan 211, so the air volume is large. Heat exchange in the upper heat exchanger 100a can occur actively.

Meanwhile, the outdoor unit of the air conditioner according to an embodiment of the present invention may be embodied in various other embodiments in addition to the above-described embodiment.

Another embodiment of the present invention is characterized in that the lower heat exchanger is formed on a part of the front surface of the outdoor unit and is shorter than the length of the upper heat exchanger.

In another embodiment of the present invention, since all other configurations except for the lower heat exchanger and the suction panel are the same as in the above-described embodiment, the same reference numerals are used for the same components, and a detailed description thereof will be omitted.

9 is a perspective view of an outdoor unit of an air conditioner according to another embodiment of the present invention.

As shown in the drawing, the outdoor unit 2 of the air conditioner according to another embodiment of the present invention has an upper surface formed by a top cover 10 on which a discharge port 11 is formed, and is attached to a base frame 41 . The lower surface is formed by the base pan 40 supported by the In addition, at the four corners of the outdoor unit 2 , side supporters 60 are formed to extend between the top cover 10 and the base fan 40 .

In addition, the side supporter 60 , the top cover 10 , and the base fan 40 are connected by an out plate 70 . The outer plate 70 is composed of a plurality of plates to form a peripheral appearance of the outdoor unit 2 and allows external air to be introduced into the outdoor unit 2 through the plurality of suction ports 772, 782, and 783 at the same time.

Meanwhile, various parts constituting the refrigeration cycle including the outdoor heat exchanger 100 ′ and compressors 51 and 52 are provided inside the outdoor unit 2 , and these components can be mounted on the base fan 40 . have.

The outdoor heat exchanger 100 ′ is formed along the base fan 40 , and may be disposed along four peripheral surfaces of the outdoor unit 2 . Accordingly, when the blowing fan 211 provided inside the outdoor unit 2 is driven, external air is sucked through suction ports 772,782,783 formed on four surfaces around the outdoor unit 2, and the outdoor heat exchanger 100') and heat exchange, and the heat-exchanged air passes through the blower fan 211 and is discharged upward through the outlet 11 .

The outdoor heat exchanger 100' has a variable path structure so that the air conditioner can be operated more efficiently, and is composed of an upper heat exchanger 100a' and a lower heat exchanger 100b'. , as in the above-described embodiment, the flow direction and path of the refrigerant can be adjusted according to the operating state of the air conditioner.

The upper heat exchanger 100a' is formed to extend from one side of the left side of the outdoor unit 2 to one side of the front side through the rear side and the right side. In addition, suction ports 772 and 782 are formed in the outer plate 70 at positions corresponding to the upper heat exchanger 100a'. Accordingly, the upper heat exchanger 100a ′ enables air to be sucked from the four peripheral surfaces of the outdoor unit 2 .

The lower heat exchanger 100b' is disposed below the outdoor unit 2, is integrally formed with the upper heat exchanger 100a', and the length extending along the circumference of the outdoor unit 2 is the upper heat exchanger. It may be formed somewhat shorter than the group 100a'.

In detail, the lower heat exchanger 100b' extends from one side of the left side of the outdoor unit 2 identical to that of the upper heat exchanger 100a', and extends through the rear and right side surfaces of the outdoor unit 2 to one side of the front side. do.

In this case, the end of the lower heat exchanger 100b ′ extending toward the front of the outdoor unit 2 is positioned more right than the end of the upper heat exchanger 100a ′. Accordingly, an opening 100c' forming a predetermined space is formed at a lower portion of the upper heat exchanger 100a' and a left side of the lower heat exchanger 100b'.

Also, the height of the lower heat exchanger 100b' may be the same as or higher than the height of the compressors 51 and 52. Accordingly, the opened height of the opening 100c' is also the height of the compressors 51 and 52. ) can be equal to or higher than

The compressors 51 and 52 may be located in the base pan 40 adjacent to the opening 100c', so that the compressors 51 and 52 are serviced for maintenance through the opening 100c'. Work can be done or it can be replaced.

The compressors 51 and 52 may be configured in plurality, and at least a portion of the compressors 51 and 52 may be disposed in the first half of the outdoor unit 2 adjacent to the opening 100c'.

Meanwhile, the out plate 70 may include a suction panel 78 that shields the upper heat exchanger 100a ′ and the lower heat exchanger 100b ′ among the front surfaces of the outdoor unit 2 . In addition, a shielding part 781 is formed at a position corresponding to the blowing fan 211 and the shroud 20 at an upper portion of the suction panel 78 , and the suction ports 782 and 783 are formed below the shielding part 781 . ) is formed in large numbers.

At this time, the suction ports 782 and 783 correspond to the first suction port 782 formed at a position corresponding to the upper heat exchanger 100a ′ and the lower heat exchanger 100b ′ below the first suction port 782 . A second suction port 783 may be formed. In this case, a heat exchange shield 784 for shielding the inside of the outdoor unit 2 in which the compressors 51 and 52 are located may be further formed on the side of the second suction port 783 .

Claims (9)

An outdoor unit of an air conditioner connected to at least one indoor unit, the outdoor unit comprising:
a blowing fan disposed above the outdoor unit;
a top cover forming an upper surface of the outdoor unit and having a discharge port through which air is discharged from the blowing fan;
a base fan forming a lower surface of the outdoor unit and having a compressor mounted thereon;
a heat exchanger mounted on the base fan and bent along a circumference of the base fan; and
and an outer panel forming at least a portion of a circumferential surface of the outdoor unit and having a plurality of inlets through which outdoor air flows into the heat exchanger;
the heat exchanger,
an upper heat exchanger extending along right, rear, and left sides of the front central portion of the outdoor unit;
It is located below the upper heat exchanger and includes a lower heat exchanger extending along a left side, a rear side, and a right side of the outdoor unit;
An opening of the outdoor unit is defined by a lower end of the upper heat exchanger and a side end of the lower heat exchanger,
A control box for controlling the operation of the outdoor unit is provided in an area where the heat exchanger and the compressor are not disposed on the front surface of the outdoor unit;
The outer panel forms a part of the front exterior, shields the control box, and includes a service panel configured to be detachable,
A drain member for guiding drainage of the condensed water of the upper heat exchanger is provided in the opening,
The drain member is
a drain pan located below the front surface of the upper heat exchanger and extending along the front surface of the upper heat exchanger to collect condensed water of the upper heat exchanger;
and a drain tube communicating with the drain pan and extending from both ends of the drain pan toward a drain hole or a drain passage of the base pan to guide the condensed water of the upper heat exchanger. .
The method of claim 1,
The upper heat exchanger is connected to an upper end of the lower heat exchanger,
The height of the lower heat exchanger is equal to or greater than that of the compressor.
3. The method of claim 2,
The outdoor unit of the air conditioner, wherein the compressor is disposed behind the area of the opening.
4. The method of claim 3,
The outdoor unit of the air conditioner according to claim 1, further comprising a noise shield for preventing the noise of the compressor from leaking out by wrapping the compressor with a suction or sound insulating material.
The method of claim 1,
The upper heat exchanger and the lower heat exchanger are
a first distribution pipe in which a pipe connected to the indoor unit is branched and connected to the upper heat exchanger, the first distribution pipe having a first valve device;
a second distribution pipe in which a pipe connected to the indoor unit is branched and connected to the lower heat exchanger, the second distribution pipe having a second valve device;
The outdoor unit of the air conditioner according to claim 1, further comprising a connecting pipe connecting the lower heat exchanger from the first distribution pipe and having a third valve device.
delete delete The method of claim 1,
The out panel includes a suction panel that shields a portion of the front surface of the outdoor unit,
The suction panel is
a shielding part for shielding the upper part where the blowing fan is located;
a plurality of inlet openings in an area corresponding to the upper heat exchanger;
and a heat exchange shield for shielding a lower portion corresponding to the opening.
An outdoor unit of an air conditioner connected to at least one indoor unit, the outdoor unit comprising:
a top cover forming an upper surface of the outdoor unit and having a discharge port through which air is discharged from the blowing fan;
a base fan forming a lower surface of the outdoor unit and having a compressor mounted thereon;
a heat exchanger mounted on the base fan and bent along four perimeters of front, rear, left, and right sides of the base fan; and
and an outer panel forming at least a portion of a circumferential surface of the outdoor unit and having a plurality of inlets through which outdoor air flows into the heat exchanger;
The heat exchanger is connected to each other in a variable pass method, and is composed of an upper heat exchanger and a lower heat exchanger that are vertically arranged to be in contact with each other,
The upper heat exchanger extends along the right side, the rear side and the left side from the front central portion of the outdoor unit,
The lower heat exchanger is formed to be shorter than the transverse length of the upper heat exchanger, and the vertical height is formed to be higher than the height of the compressor,
A control box for controlling the operation of the outdoor unit is provided in an area where the heat exchanger and the compressor are not disposed on the front surface of the outdoor unit;
The outer panel forms a part of the front exterior, shields the control box, and includes a service panel configured to be detachable,
An opening of the outdoor unit is defined by a lower end of the upper heat exchanger and a side end of the lower heat exchanger,
A drain member for guiding drainage of the condensed water of the upper heat exchanger is provided in the opening,
The drain member is
a drain pan located below the front surface of the upper heat exchanger and extending along the front surface of the upper heat exchanger to collect condensed water of the upper heat exchanger;
and a drain tube communicating with the drain pan and extending from both ends of the drain pan toward a drain hole or a drain passage of the base pan to guide the condensed water of the upper heat exchanger. .

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