KR20190112603A - Indoor unit of air conditioner - Google Patents

Abstract

According to an embodiment of the present invention, an indoor unit of an air conditioner comprises: a cabinet installed on a ceiling and forming a storage space opened downwards; a fan assembly disposed in the storage space; a heat exchanger arranged along the circumference of the fan assembly in the storage space; and a drain pan disposed in a lower portion of the cabinet to support the heat exchanger and collecting condensate water generated from the heat exchanger. The drain pan is formed of an expanded polypropylene (EPP) material in an integral type.

Description

Indoor unit of air conditioner {Indoor unit of air conditioner}

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

In general, an air conditioner is a cooling / heating system that cools or heats a room by repeating the action of inhaling air in a room, exchanging heat with a low-temperature or high-temperature refrigerant, and then discharging it into the room. A device that forms a series of cycles consisting of a valve-evaporator.

The air conditioner may be classified into a separate air conditioner in which the indoor unit and the outdoor unit are separated, and an integrated air conditioner in which the indoor unit and the 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 that exchanges heat with outside air, and the indoor unit includes an indoor heat exchanger that exchanges heat with indoor air.

When the refrigeration cycle has a cooling operation, the outdoor heat exchanger may function as a condenser, and the indoor heat exchanger may function as an evaporator. On the other hand, when the refrigeration cycle is a heating operation, the indoor heat exchanger may function as a condenser, the outdoor heat exchanger as an evaporator.

Meanwhile, the indoor unit may be classified into a ceiling type installed on the ceiling of the room, a stand type standing on the floor of the room, and a wall hanging type installed on the interior wall of the indoor unit.

The ceiling type indoor unit may include a cabinet fixed to an indoor ceiling or inserted into a ceiling, and a panel installed at a lower end of the cabinet and through which air is discharged.

The inside of the cabinet may include a heat exchanger formed in the circumferential direction of the inside of the cabinet. The cabinet may include a drain pan supporting the heat exchanger and collecting condensate generated by the heat exchanger.

The drain pan may be coupled to the cabinet. The drain pan may have a function of guiding circulation of air by forming a flow path through which air is sucked on the inside of the heat exchanger, and a flow path through which air is discharged on the outside of the heat exchanger.

Prior art, Korean Unexamined Patent Publication No. 10-2008-0052973, the cabinet 130 is inserted into the indoor ceiling, the front panel 400 is coupled to the lower end of the cabinet 130, the cabinet 130 An indoor unit of an air conditioner including an indoor heat exchanger (160) formed therein and a drain pan (150) for collecting condensate generated from the indoor heat exchanger (160) is disclosed. In addition, the drain fan 150 supports the indoor heat exchanger 160, and has a structure having a structure for guiding the circulation of the air by forming a flow path for the air discharge and suction.

On the other hand, the drain pan is required to have a certain strength or more so as to support the load of the drain pan. In addition, the drain pan is required to be insulated so as to insulate the temperature inside and outside of the cabinet and insulate the discharged air and the sucked air. In addition, the drain pan requires water resistance to collect the condensate.

Conventionally, in order to ensure heat insulation, water resistance, and strength of the drain pan, the drain pan is configured by combining a part formed of an EPS material and a part formed of a plastic material.

However, according to the conventional drain pan, since the drain pan is provided as a combination structure of the parts of the plastic material and the parts of the EPS material, each part must be manufactured and combined separately, resulting in poor workability, manufacturing cost and manufacturing time. There is a growing problem.

In addition, there is a problem that the weight of the drain pan increases by the plastic component.

It is an object of the present invention to provide an indoor unit of an air conditioner, which is integrally formed of a single material, which reduces manufacturing costs and is easily equipped with a drain pan.

An object of the present invention is to provide an indoor unit of an air conditioner provided with a drain pan having heat insulation and high strength.

An indoor unit of an air conditioner according to an embodiment of the present invention includes: a cabinet installed on a ceiling and forming an accommodation space opened downward; A fan assembly provided in the accommodation space; A heat exchanger disposed along a circumference of the fan assembly in the accommodation space; It is provided in the lower portion of the cabinet to support the heat exchanger, and includes a drain pan for collecting the condensate generated in the heat exchanger, the drain pan is characterized in that the integrally molded of EPP material.

And, the drain pan is characterized in that it is molded from EPP raw material having a foaming ratio of 15 times or more to 30 times or less.

And, the drain pan is characterized in that it is molded from EPP raw material having a foaming ratio of 15 times or more to 18 times or less.

At least a portion of the surface of the drain pan is characterized in that a glazing surface treatment is performed in which the EPP raw material is melted and then solidified to increase strength.

The drain pan may include a drain pan body that shields an accommodation space of the cabinet; A suction opening that is opened in the center of the drain pan body and forms a passage through which external air is sucked into the cabinet; A discharge opening that is opened along an edge of the drain pan body and forms a passage through which air exchanged with the heat exchanger is discharged; And a support formed in a shape corresponding to a lower end of the heat exchanger on an upper surface of the drain pan body facing the inside of the accommodation space and accommodating a lower end of the heat exchanger.

In addition, a plurality of ribs are formed on the bottom surface of the support part on which the lower surface of the heat exchanger is seated, and the heat exchanger is supported by the plurality of ribs.

The drain pan may include: a discharge part recessed to a depth corresponding to the support part on an upper surface of the drain pan body, and configured to collect condensed water collected in the support part; A discharge port formed in the discharge part and configured to discharge condensed water; And a rubber cap inserted into the outlet and shielding the outlet.

The discharge unit may include a plurality of protrusions spaced apart from each other along the outer circumference of the discharge port so as to filter foreign matter contained in the condensate.

And, the inner peripheral surface of the discharge port, characterized in that the glazing surface treatment is solidified after the EPP raw material is melted.

And, the support portion and the discharge portion, characterized in that the glazing surface treatment is solidified after the EPP raw material is melted.

And an orifice for guiding air passing through the suction opening to the fan assembly, wherein the orifice is mounted to the drain pan.

The lower surface of the drain pan may include a stepped portion recessed outside the circumference of the suction opening, and the orifice may cover the suction opening and be inserted into the stepped portion; An orifice ball opening in an area located inside the suction opening in the orifice body; And a guide portion extending upwardly around the orifice ball and extending through the suction opening toward the fan assembly.

The orifice body has a plurality of through holes through which the fastening member penetrates in an area overlapping the stepped portion, and is mounted to the drain pan by the fastening member.

And a control box for controlling the operation of the fan assembly, wherein the control box is mounted to the drain pan.

The lower surface of the drain pan is provided with a stepped portion recessed outside the circumference of the suction opening, and the control box is inserted into one side of the stepped portion and covers a part of the suction opening.

The control box may include a control box body forming an outer shape and having a printed circuit board electrically connected to the fan assembly therein; And a fastening part extending outwardly from the control box body and overlapping with a bottom surface of the drain pan outside the stepped part and having a hole through which the fastening member penetrates.

According to the indoor unit of the air conditioner according to the embodiment of the present invention, the following effects can be expected.

First, since the drain pan supporting the heat exchanger and collecting the condensate is integrally formed of EPP material, since the drain pan has a higher strength than the drain pan formed of the conventional EPS material, a separate configuration for reinforcing strength is not required. Therefore, manufacturing cost is reduced and assembly is easy, stable support and fixing of components mounted on the heat exchanger and the drain pan are possible, and heat insulation and water resistance can be secured.

Second, since the drain pan is formed of EPP raw material having a foaming ratio below a specific drainage, it is possible to secure a high strength to stably support the load of the heat exchanger, and the drain pan may be stably coupled to the cabinet. . In addition, since it is molded from an EPP raw material having a expansion ratio of a specific multiple or more, it is possible to reduce the material cost by optimizing the usage of the EPP raw material while securing the required strength.

Third, at least a portion of the surface of the drain pan is glazed to thereby increase the strength of the drain pan. Therefore, even when molded from the EPP raw material having a high expansion ratio, it is possible to secure the required strength of the drain pan, thereby reducing the amount of the EPP raw material, thereby reducing the material cost more effectively.

Fourth, since the discharge port through which the condensate collected in the drain pan is discharged is treated with a glazing surface, the condensate can be smoothly discharged by the smooth surface and water leakage can be effectively prevented between the rubber caps.

Fifth, the support part of the drain pan in which the condensed water is collected and the discharge part in which the collected water is collected are treated with a glazing surface, so that the condensed water is more smoothly discharged by the smooth surface and the water resistance is improved to prevent the condensed water from leaking. It becomes possible.

Sixth, since the drain pan is formed of EPP material, even if the drain pan does not have a separate configuration for reinforcing strength, it is possible to firmly secure the control box and orifice mounted on the drain pan.

1 is a perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention.
2 is a view showing a state in which the panel of the indoor unit is separated according to an embodiment of the present invention.
3 is an exploded perspective view of the indoor unit according to the embodiment of the present invention.
4 is a longitudinal sectional view of an indoor unit according to an embodiment of the present invention.
5 is a perspective view of a drain pan to which a control box and an air guide according to an exemplary embodiment of the present invention are coupled.
6 is an exploded perspective view of FIG. 5.
7 is a view illustrating a lower structure of a drain pan according to an embodiment of the present invention.
8 is a view showing an upper structure of a drain pan according to an embodiment of the present invention.
9 is a view showing a coupling structure of a control box and a drain pan according to an embodiment of the present invention.
10 is a side view of a link according to an embodiment of the present invention.
11 is a plan view of a link according to an embodiment of the present invention.
FIG. 12 is a cross-sectional view of the indoor unit cut along the line 12 ′ -12 ″ in FIG. 9.
13 is a view showing a coupling structure of a drain pan and a cabinet according to an embodiment of the present invention.
FIG. 14 is a cross-sectional view of the indoor unit taken along the line 14 ′ -14 ″ in FIG. 13.
15 is a perspective view showing the upper structure of the fixing member according to an embodiment of the present invention.
16 is a perspective view showing a lower structure of a fixing member according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of the spirit of the present invention can be easily made by adding, changing, or deleting other elements. Can suggest.

1 is a perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention, Figure 2 is a view showing a state in which the panel of the indoor unit according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention 4 is an exploded perspective view of the indoor unit, and FIG. 4 is a longitudinal sectional view of the indoor unit according to the embodiment of the present invention.

The indoor unit 1 of the air conditioner according to the embodiment of the present invention is provided with a cabinet 10 inserted into the ceiling of an indoor space as a whole, and is provided at the lower end of the cabinet 10 to the exterior of the lower surface of the indoor unit 1. It may be formed of a panel 20 that is exposed to the lower side of the ceiling.

The lower end of the cabinet 10 may be viewed as one end of the cabinet 10 facing the floor of the indoor space in a state where the indoor unit 1 is mounted on the ceiling. In FIG. 1, the indoor unit 1 may be viewed upside down such that the lower surface of the indoor unit 1 faces upward. In the state where the indoor unit 1 is mounted on the ceiling, the panel 20 may be located under the cabinet 10.

Inside the cabinet 10, a heat exchanger 30 for exchanging heat with sucked air, a fan assembly 40 for forced suction and discharge of indoor air, and a drain for collecting condensed water generated by the heat exchanger 30. The fan 100, an orifice 60 for guiding air sucked toward the fan assembly 40, and a condensate pump 70 for discharging the collected condensate to the outside may be provided.

The panel 20 may be formed in a substantially rectangular shape when viewed from below. In addition, the panel 20 may be further extended to the outside of the circumference of the cabinet 10 so that the circumferential portion may contact the bottom surface of the ceiling.

The panel 20 may be provided with a discharge port 22 which is an outlet of air discharged through the cabinet 10. The discharge port 22 may be formed along the edge of the panel 20, and may be disposed radially with respect to the center of the lower surface of the panel 20. In addition, the discharge port 22 may be formed long along the edge of the panel 20.

A vane 23 may be rotatably provided at the discharge port 22. The vane 23 may adjust the direction of the wind discharged from the discharge port 22 by the rotation. And, it may be provided to open and close the discharge port 22 in accordance with the on / off of the fan assembly 40.

The panel 20 may be provided with a suction grill 21 forming a passage through which indoor air is sucked into the cabinet 10. The suction grill 21 may be provided at the center of the panel 20. The suction grille 21 may be located between the plurality of discharge ports 22.

The suction grill 21 may be formed in a plate shape to shield the opening of the center of the panel 20. At least a part of the suction grille 21 may be formed in a grill or lattice shape to smoothly suck the indoor air.

Meanwhile, one surface of the cabinet 20 of the cabinet 10 may be formed to be opened. That is, the cabinet 10 may be provided to form an accommodation space with a lower surface opened, and the opened lower surface of the cabinet 10 may be covered by the panel 20.

The cabinet 10 may include an outer case 11 forming an outer appearance and an inner case 15 provided inside the outer case 11.

The out case 11 may be formed of a metal material and may be formed of a steel material so as to be fixed to the ceiling to support the indoor unit 1.

The outer case 11 may be formed so that the lower surface is opened, and may include an upper plate 12 forming the upper surface and a circumferential plate 13 forming the circumferential surface. The circumferential plate 13 may be provided along the circumference of the upper plate 12, and a plurality of divided plate-like members may be combined with each other.

The inner case 15 may be provided on an inner surface of the out case 11. The inner case 15 may be formed of an insulating material such as EP (Expended Polystyrene), and may serve to insulate the interior of the cabinet 10 and prevent noise and vibration.

The inner case 15 may be in close contact with the inner surface of the outer case 11 to form a shape of the inside of the cabinet 10, and may be formed so that the surface facing the panel 20 is opened. That is, the inner case 15 may be formed so that the lower surface thereof is opened.

The fan assembly 40 may be provided in an inner space of the inner case 15, and the heat exchanger 30 may be disposed around the fan assembly 40.

The fan assembly 40 may be disposed at the inner space center of the inner case 15.

The fan assembly 40 may include a motor 42 and a blowing fan 41 coupled to the rotating shaft of the motor 42 to rotate when the motor 42 is driven to force the flow of air. At this time, the blowing fan 41 may be provided as a centrifugal fan to suck the air in the direction of the rotation axis to discharge to the side.

In addition, the heat exchanger 30 may be disposed along an inner surface of the inner case 15, and may be formed to be spaced apart from the wall surface of the inner case 15 and the fan assembly 40.

The drain pan 100 may be provided at a lower end of the inner case 15.

The drain pan 100 may include a drain pan body 110 that has a circumference formed in a shape corresponding to the circumferential shape of the inner case 15 and is formed to cover the bottom surface of the inner case 15. .

The drain pan body 110 may be formed in a ring shape with an open center so that external air may be sucked into the fan assembly 40 through the suction grill 21.

In addition, the drain pan body 110 may be accommodated in the outer case 11 so that a circumferential surface thereof may be wrapped by the outer case 11. To this end, the sum of the height of the drain pan body 110 and the height of the inner case 15 may correspond to the height of the inner space of the out case 11.

In more detail, a suction opening 120 may be formed in a region of the drain pan body 110 corresponding to the fan assembly 40. At this time, the suction grill 21, the fan assembly 40 and the suction opening 120 may be located on the same extension line.

In addition, a discharge opening 111 may be formed in the drain pan body 110 to communicate with the discharge port 22 of the panel 20. The discharge opening 111 may be formed at a position corresponding to the discharge port 22 of the panel 20.

In more detail, a plurality of discharge openings 111 may be formed to be spaced apart from each other along an edge of the drain pan body 110. In addition, the discharge opening 111 may be formed long along the edge of the drain pan body 110 in correspondence with the shape of the discharge port 22.

In addition, the drain pan body 110 may include a support part 150 having a lower end in contact with the heat exchanger 30.

The support part 150 may be formed between the suction opening 120 and the discharge opening 111.

That is, the support part 150 may be formed along the outer circumference of the suction opening 120, and the discharge opening 111 may be formed along the outer circumference of the support part 150. Alternatively, the suction opening 120 may be formed in the inner region of the drain pan 100 based on the support 150, and the discharge opening 111 may be formed in the outer region.

A groove may be formed in the support part 150 to accommodate a lower end of the heat exchanger 30. Therefore, condensed water generated in the heat exchanger 30 may be collected in the groove of the support part 150.

On the other hand, the inside of the cabinet 10 may be provided with a condensate pump 70 for discharging the condensed water collected in the drain pan 100 to the outside. The pipe connected to the inlet side of the condensate pump 70 may extend toward the discharge unit 160 (FIG. 8) formed at one side of the drain pan 100 to collect condensate.

In addition, the condensate pipe 71 connected to the outlet side of the condensate pump 70 may extend through the cabinet 10 to the outside to discharge the condensate inside the indoor unit 1 to the outside.

Outside air may be sucked into the inner space of the cabinet 10 provided with the fan assembly 40 through the suction opening 120. In addition, the fan assembly 40 may be discharged while rotating in the circumferential direction, and may exchange heat with the refrigerant while passing through the heat exchanger 30, and may flow into the internal space of the cabinet 10 outside the heat exchanger 30. have. In addition, it may be discharged to the outside through the discharge opening 111 and the discharge port 22.

The drain pan 100 supports the load of the heat exchanger 30, and may be fixed to the out case 11 for this purpose.

The drain pan 100 may be fixed to the out case 11 by a fastening member. The fastening member may be a screw 400.

For example, a bracket 90 for coupling with the drain pan 100 may be provided around the outer case 11. The bracket 90 may be provided in plurality spaced apart from each other along the circumference of the out case 11.

In addition, a fixing member 200 coupled to the bracket 90 may be provided at a position corresponding to the bracket 90 in the drain pan 100.

The fixing member 200 may be injection molded from a plastic material, and may be formed of a plastic material having a relatively high strength. For example, the fixing member 200 may be formed of a polypropylene (PP) material.

The fixing member 200 may be integrally formed with the drain pan 100 and may be provided as a separate member coupled to the drain pan 100. In addition, the fixing member 200 may protrude outward from the circumference of the drain pan 100, and at least a portion thereof may overlap the bracket 90. The out case 11 and the drain pan 100 may be coupled to each other by a screw 400 passing through the bracket 90 and the fixing member 200.

Meanwhile, an orifice 60 may be further provided inside the cabinet 10.

The orifice 60 may be coupled to the bottom surface of the drain pan 100 and may be formed in a shape corresponding to the shape of the center portion of the drain pan 100.

The orifice 60 forms the suction opening 120, and serves to guide the air passing through the suction opening 120 to enter the center of the fan assembly 40. To this end, the orifice 60 may be formed with an open orifice hole 62, and a guide portion 63 may be formed along the circumference of the orifice hole 62. The suction opening 120 may be defined by the opening of the orifice hole 62 and the guide portion 63.

The guide portion 63 may extend upwardly toward the fan assembly 40, and may be formed in a cylindrical shape with a diameter narrowing upward. At this time, the guide portion 63 may extend to a position adjacent to the upper end of the blowing fan 41. The blower fan 41 may be positioned to correspond to the center of the opening of the guide part 63.

Therefore, the air sucked into the suction opening 120 may be guided by the guide part 63 and sucked in the axial direction of the fan assembly 40. The fan assembly 40 may be discharged laterally while passing in the circumferential direction of the fan assembly 40 to pass through the heat exchanger 30. In addition, while passing through the heat exchanger 30, the refrigerant may be exchanged with the refrigerant to be cooled.

The air passing through the heat exchanger 30 passes through the space between the heat exchanger 30 and the inner surface of the inner case 15 to the outside through the discharge opening 111 and the discharge port 22. May be exposed.

On the other hand, the inside of the cabinet 10, a control box 50 for controlling the operation of the indoor unit 1 may be further provided.

The orifice 60 and the control box 50 may be mounted to the drain pan 100.

Hereinafter, the structure of the drain pan 100 and the mounting structure of the control box 50 and the orifice 60 will be described in more detail.

5 is a perspective view of a drain pan in which a control box and an orifice are coupled according to an embodiment of the present invention. 6 is an exploded perspective view of FIG. 5. 7 is a diagram illustrating a lower structure of the drain pan according to the embodiment of the present invention.

The control box 50 and the orifice 60 may be fixed to the drain pan 100 by a fastening member. The fastening member may be a screw 400.

 Including the control box 50 and the orifice 60, the components coupled to the drain pan 100 by a fastening member may be defined as a 'combination'.

A central portion of the lower surface of the drain pan 100 may be recessed to accommodate the control box 50 and the orifice 60. That is, a recessed stepped portion 126 may be formed in the central region of the drain pan 100. In this case, the step part 126 may be an area surrounded by the support part 150.

The stepped portion 126 of the drain pan 100 may be formed with a cut suction opening 125 so that the suction opening 120 can be formed. The suction opening 125 may be formed by opening a central area except for a part of an edge of the stepped part 126.

The control box 50 may be electrically connected to electrical components such as the motor 42, the condensate pump 70, a angular valve and a sensor provided in the indoor unit 1, and control the operation of the electrical components. have. To this end, a space of a predetermined size may be formed inside the control box 50 and a printed circuit board may be embedded therein.

The control box 50 and the orifice 60 may be accommodated in the stepped portion 126 and at least partially mounted on an edge of the stepped portion 126.

In more detail, the control box 50 may be at least partially seated on the stepped portion 126, and a portion may be provided to shield a portion of the suction opening 125. That is, a part of the control box 50 may be exposed to the internal space of the cabinet 10, and may be cooled by cold air generated in the heat exchanger 30.

At this time, the control box 50 is located in the region between the guide portion 63 and the discharge opening 111, so that the flow of air can be prevented.

The control box 50 may include a control box body 51 in which the printed circuit board is embedded.

The control box body 51 may be formed in a substantially hexahedral box shape, and a space in which the printed circuit board is provided may be formed.

The control box body 51 may be provided with a fastening portion 52 to be fixed to the drain pan 100 by a fastening member.

The fastening part 52 may protrude outward from the circumferential end of the control box body 51, and may be formed in plurality at positions spaced apart from each other. A fastening part through hole 53 through which the fastening member penetrates may be formed in the fastening part 52.

A control box fixing part 130 may be formed in the drain pan 100 at a position corresponding to the fastening part 52. The control box fixing part 130 may be formed at a position corresponding to the plurality of fastening parts 52.

The fastening member penetrating the fastening part through hole 53 may be inserted into and fixed to the control box fixing part 130. Accordingly, the control box 50 may be fixed to a plurality of parts spaced apart from each other by a fastening member coupled to the control box fixing part 130 through the fastening part 51.

The control box fixing part 130 may be formed outside the stepped part 126 on the bottom surface of the drain pan 100. The plurality of fastening parts 52 may protrude outward from the bottom of the control box body 51 to be overlapped with the control box fixing part 130.

The orifice 60 may be formed in a shape corresponding to the stepped portion 126 of the drain pan 100 except for an area in which the control box 50 is provided. That is, the orifice 60 may be provided to cover the stepped portion 126 outside the control box 50.

In detail, the orifice 60 may include an orifice body 61 covering the stepped portion 126.

The orifice hole 62 may be formed in an area corresponding to the fan assembly 40 in the orifice body 61. The guide portion 63 may extend toward the fan assembly 40 along the circumference of the orifice hole 62.

Meanwhile, the suction opening 125 may be larger than the circumference of the guide part 63. Therefore, when the orifice 60 is removed, the space inside the cabinet 10 may be more exposed. Therefore, when the orifice 60 is removed, maintenance and assembly workability of the inside of the cabinet 10 may be secured through the suction opening 125.

Meanwhile, an orifice through hole 65 through which the fastening member penetrates may be formed in the orifice body 61. The orifice through-hole 65 may be formed a plurality of spaced apart along the circumference of the guide portion (63).

In addition, an orifice fixing part 140 may be formed at a position corresponding to the orifice through hole 65 in the stepped part 126 of the drain pan 100. The orifice fixing part 140 may be formed at a position corresponding to the plurality of orifice through holes 65.

The fastening member penetrating the orifice through hole 65 may be inserted into and fixed to the orifice fixing part 140. Accordingly, the orifice 60 may be fixed to a plurality of parts spaced apart from each other by a fastening member coupled to the orifice fixing part 140 through the orifice through hole 65.

8 is a view showing an upper structure of a drain pan according to an embodiment of the present invention.

An upper surface of the drain pan 100 may be formed with the support part 150 recessed to accommodate the lower end of the heat exchanger 30.

The support part 150 may be formed along an outer circumference of a central portion of the drain pan 100 on an upper surface of the drain pan 100.

In more detail, the support part 150 is recessed in a region between a central portion of the drain pan 100 where the stepped portion 126 is formed and an edge of the drain pan 100 where the discharge opening 111 is formed. Can be formed. That is, the drain pan 100 may be considered to be divided into the stepped portion 126 and the edge region based on the support 150.

A plurality of ribs 152 protruding upward may be formed on the bottom surface 151 of the support part 150.

The plurality of ribs 152 may be formed in an area where the bottom surface of the heat exchanger 30 is seated, and support the bottom surface of the heat exchanger 30. That is, the heat exchanger 30 may be supported by the plurality of ribs 152 and spaced apart from the bottom surface 151 of the support part 150.

The plurality of ribs 152 may be formed to extend in the longitudinal direction of the bottom surface 151. In addition, the plurality of ribs 152 may be spaced apart from the front, rear, left and right when viewed in the longitudinal direction. That is, the plurality of ribs 152 are spaced apart from each other in the longitudinal direction, it can be seen to be spaced apart in and out.

Accordingly, the plurality of ribs 152 may stably support the load by distributing the load of the heat exchanger 30. The condensed water collected in the support part 150 may flow inside the support part 150 without being trapped.

On the other hand, on one side of the upper surface of the drain pan 100, a discharge unit 160 for collecting and discharging the condensed water collected in the support 150 may be formed. The discharge unit 160 may be formed at one side of an upper surface edge of the drain pan 100, and may be formed in an area between the plurality of discharge openings 111.

The discharge part 160 may be recessed to a depth or a deeper depth corresponding to the support part 150, and may be connected to the support part 150. Therefore, condensed water collected in the support part 150 may flow into the discharge part 160. At this time, the support 150 may be formed such that the bottom surface is inclined toward the discharge unit 160, the condensed water to be guided to the discharge unit 160 more smoothly.

On the other hand, the discharge unit 160, the discharge port 161 for extracting the water collected in the drain pan 100 during the AS operation may be formed. The outlet 161 may be formed through the drain pan 100.

In addition, the outlet 161 may be shielded from being leaked by a rubber cap inserted through the bottom surface of the drain pan 100.

The pipe connected to the inlet side of the condensate pump 70 may extend toward the outlet 161 to suck the condensate collected at the outlet 161.

On the other hand, the discharge unit 160, a plurality of protrusions 165 spaced apart from each other may be formed.

The plurality of protrusions 165 may be formed along a boundary between the support part 150 and the discharge part 160. Alternatively, the plurality of protrusions 165 may be disposed along an outer circumference of the outlet 161 to surround the outlet 161.

The plurality of protrusions 165 may allow the condensed water to pass through the spaces spaced apart from each other, and prevent foreign substances included in the condensed water from passing through. Therefore, foreign matters are introduced into the outlet 161 to prevent the inlet side of the condensate pump 70 or the outlet 161 from being blocked.

Meanwhile, the drain pan 100 may be molded of EPP (Expanded Polypropylene) material to secure heat insulation and water resistance and to secure sufficient strength in a single configuration. That is, the drain pan 100 may be integrally formed of EPP material.

In detail, the drain pan 100 prevents the outflow of cold air generated in the heat exchanger 30, and prevents the air discharged through the discharge opening 111 from being sucked through the suction opening 120. Insulation is required to insulate. In addition, the combination is firmly coupled, and a certain strength or more is required to stably support the combination and the heat exchanger 30. In addition, water resistance is required to prevent infiltration or leakage into the condensate.

To this end, the drain pan 100 may be molded of EPP raw material foamed to a specific magnification or less. And, in order to reduce moldability and material cost, it can be molded into an EPP raw material foamed at a specific magnification or more.

Since the molding method of the EPP material is variously disclosed in the prior art, the molding method will be briefly described.

Raw materials for EPP materials are provided in the form of pellets. And it foams through the foaming apparatus exclusively for EPP raw materials, and is inflated. At this time, the volume magnification of the EPP raw material inflated by the foaming apparatus can be defined as 'foaming magnification'.

The smaller the expansion ratio, the higher the strength of the EPP raw material, and thus the higher the strength of the molded product. In addition, the higher the expansion ratio, the lower the strength of the EPP raw material, and the lower the strength of the molded product. In this case, the higher the expansion ratio, the less the use amount of the EPP raw material in molding a specific volume of the product, thereby reducing the material cost.

The EPP raw material inflated through the foaming is subjected to a raw material injection step into the mold for forming the drain pan 100. Then, the steam is supplied to the inside of the mold to fuse the EPP raw material inside the mold to undergo a molding step of molding the raw material into the shape of the drain pan 100. After the mold is cooled, the ejection step of taking out the drain pan 100 from which the molding is completed is performed. In addition, molding of the drain pan 100 may be completed through a drying step of drying the finished product.

On the other hand, the drain pan 100 according to an embodiment of the present invention, for the stable support of the heat exchanger 30 and the combination and the firm mounting of the combination, can be molded at a foaming ratio of 18 times or less.

And, it can be molded at a foaming ratio of 15 times or more to secure a sufficient strength and to reduce the material cost. That is, the drain pan 100 may be molded from an EPP raw material having an expansion ratio of 15 times or more and 18 times or less.

In more detail, the drain pan 100 may require a tensile strength of about 680 kpa or more in order to secure sufficient strength. In addition, the compressive strength may be required to be 320kap, 430kap, 860kap or more at 25% strain, 50% strain, and 75% strain level, respectively.

According to known EPP properties, EPP material with 18 times expansion ratio has tensile strength of 680kpa and compressive strength of 320kap, 430kap and 860kap at 25% Strain, 50% Strain and 75% Strain, respectively. . Therefore, the drain pan 100 may be preferably applied at a foam ratio of 18 times or less.

In addition, the drain pan 100 may be preferably applied at a foaming ratio of at least 15 times to reduce moldability and material cost.

As such, the drain pan 100 formed of an EPP raw material having a magnification of 15 times to 18 times may have required strength, heat insulation, and water resistance, and material costs may be efficiently reduced.

On the other hand, the drain pan 100 may be molded with a higher surface strength by a glazing (Galzing) surface treatment method in the molding step.

At this time, the glazing method is a surface treatment method to melt the surface of the molding to form a more rigid surface layer. The glazing method is briefly described as a known technique that is variously applied for strength reinforcement of lightweight materials such as EPS materials or EPP materials.

For example, when a glazing method is applied to the drain pan 100, a surface flow path through which steam moves along a surface of the drain pan 100 is formed in a mold for forming the drain pan 100. Can be. In addition, steam may be intensively supplied through the surface flow path to rapidly melt the surface of the drain pan 100.

In addition, the surface of the drain pan 100 may be rapidly cooled to form a smooth and strong strength while the molten surface of the drain pan 100 is solidified. As such, when the surface is glazed, the surface may be densely formed into fine particles, thereby improving water resistance.

At this time, only a part of the surface of the drain pan 100 may be glazed depending on the formation range of the surface flow path, or may be entirely glazed.

When the surface of the drain pan 100 is glazed, the strength of the drain pan 100 may be increased. That is, it may have a higher strength than the drain pan 100 that is not glazed in the state in which the same foaming ratio is applied.

Therefore, in the case where the surface of the drain pan 100 is glazed, in order to reduce moldability and material cost, even if the drain pan 100 is formed of EPP material having a relatively high foaming ratio, sufficient demand strength may be satisfied. Can be.

For example, when the entire surface of the drain pan 100 is glazed, even if the drain pan 100 is formed of an EPP raw material having a foam ratio of up to 30 times, sufficient demand strength may be satisfied. Therefore, when the surface of the drain pan 100 is glazed, the drain pan 100 may be formed of an EPP raw material having a foaming ratio of 15 times or more and 30 times or less.

Meanwhile, only part of the surface of the drain pan 100 may be glazed. For example, the support 150 in which the condensate is collected may be glazed to improve water resistance. Alternatively, the discharge unit 160 collecting water collected in the support unit 150 may be glazed, or may be glazed only inside the discharge port 161 in the discharge unit 160.

Meanwhile, a plurality of raw material injection holes for injecting EPP raw materials may be formed in a mold for molding the drain pan 100. The raw material injection hole may be evenly disposed to correspond to the shape of the drain pan 100 to allow the raw material to be evenly introduced into the mold.

In this case, the raw material injection hole may be formed only on the lower surface of the mold for forming the lower surface of the drain pan 100. By the raw material injection hole, a recess 113 recessed in an intaglio may be formed on the bottom surface of the drain pan 100.

The depression 113 may be formed in a shape corresponding to the shape of the raw material injection hole. At this time, the depression 113 may be intentionally formed intaglio by controlling the amount of the EPP raw material and the air pressure injected through the raw material inlet.

In the raw material injection step, the EPP raw material injected through the raw material injection hole may be injected in an amount that is completely accommodated into the mold without remaining in the raw material injection hole. In addition, the raw material inlet may be formed to a predetermined internal pressure or more to prevent backflow of the raw material. Due to the raw material injection amount and the air pressure, the recess 113 may be formed in the form of a recessed recess without being protruded.

The depression 113 may be formed to a depth of 1mm ~ 3mm.

Since the recess 113 is formed in an intaglio, it is possible to prevent a problem from occurring in the assembly of the indoor unit 1.

In detail, a burr may be formed on a surface of the drain pan 100 corresponding to the raw material injection hole when the drain pan 100 is molded. At this time, a burr may be drawn from the surface of the drain pan 100, so that a problem may occur in assemblability during assembly of the indoor unit 1.

However, since the depression 113 is formed on the surface of the drain pan 100 corresponding to the raw material injection hole, even if a burr exists, the depression 113 may be accommodated in the depression 113 and may not protrude to the outside. . Therefore, when the indoor unit 1 is assembled, it is possible to prevent the panel 20 from being raised without being in close contact with the bottom surface of the drain pan 100.

In addition, since the recess 113 is formed only on the bottom surface of the drain pan 100, it may be prevented that the condensate flows or the foreign matter accumulates.

In detail, when the support part 150 in which the condensed water is collected is formed on the upper surface of the drain pan 100, when the recess 113 is formed on the upper surface of the drain pan 100, the recess 113 ) Can disrupt the flow of condensate. In addition, since the depression 113 is opened upward, a problem may arise that foreign matter accumulates in the depression 113. However, since the recess 113 is formed only on the bottom surface of the drain pan 100, this problem can be prevented.

On the other hand, the depression 113 may be formed on the lower surface of the bridge 112 across the discharge opening (111).

Since the discharge opening 111 is formed to be long along the edge of the drain pan 100, the outer peripheral surface may be thinly formed. Therefore, the strength of the outer circumferential surface of the discharge opening 111 is weakly formed by a thin thickness, the risk of breakage may occur. And, it may be vulnerable to deformation by a thin thickness, the injection of the EPP raw material may not be made smoothly.

In order to solve such a problem, a bridge 112 may be formed at a longitudinal center of the discharge opening 111 to connect the inner and outer surfaces of the discharge opening 111 facing each other. Strength around the discharge opening 111 may be reinforced by the bridge 112.

In addition, the raw material injection hole is formed at a position corresponding to the lower surface of the bridge 112 in the mold for forming the drain pan 100 so that the EPP raw material is injected, thereby causing EPP in the area around the discharge opening 111. The raw material may be injected evenly.

The upper surface of the bridge 112 is formed to be round, thereby reducing the flow path resistance of the air discharged through the discharge opening 111. Therefore, even when the bridge 112 is formed, air can be smoothly discharged through the discharge opening 111, and a problem that noise is generated by air that hits the lower surface of the bridge 112 can be prevented.

On the other hand, when the drain pan 100 is integrally molded with EPP material, the width of each configuration formed in the drain pan 100 may be formed to have a width of at least 6mm for molding. In order to mold the drain pan 100 to an EPP material, the mold of the drain pan 100 is provided with a plurality of steam caps for supplying steam, and each configuration formed in the drain pan 100 is At least 6 mm of seating surface on which the steam cap can be seated may be required.

For example, the plurality of ribs 152 may be formed with a width of at least 6 mm so that the seating of the steam cap can be formed. In addition, the protrusion 165 formed on the discharge part 160 may be formed in a cylindrical shape, and may have a diameter of 6 mm or more.

9 is a view showing a coupling structure of a control box and a drain pan according to an embodiment of the present invention, FIG. 10 is a side view of a link according to an embodiment of the present invention, and FIG. 11 is a view of a link according to an embodiment of the present invention. FIG. 12 is a cross-sectional view of the indoor unit cut along the line 12 ′ -12 ″ in FIG. 9.

The control box mounting unit 130 and the orifice mounting unit 140 may be provided with a link 300 coupled to the fastening member.

Hereinafter, for convenience of description, the fastening member for fixing the control box 50 will be described in detail by taking an example that the screw 400 is used.

The screw 400 is a fastening member that is generally used, has a substantially 'T' shape when viewed from the side, and a screw thread may be formed on an outer circumferential surface thereof. In detail, the screw may include a screw head exposed to the outside and a screw body extending from the screw head and having a thread formed on an outer circumferential surface thereof.

The link 300 is provided, thereby preventing damage to the drain pan 100 formed of EPP material when the combination of the binder by the screw 400 is prevented, and the combination is provided to the drain pan 100. It can be fixed more firmly.

Hereinafter, a structure in which the link 300 is provided in the control box mounting unit 130 will be described in detail with reference to the accompanying drawings. The orifice mounting part 140 may be formed in the same structure as the control box mounting part 130, and the link 300 may be equally applied to the orifice mounting part 140. Therefore, the detailed description of the orifice mounting portion 140 will be omitted.

In the control box mounting unit 130, a link insertion hole 135 into which the link 300 is inserted may be formed.

The link insertion hole 135 may be formed in the same shape as the outer shape of the link 300 so that the link 300 can be completely accommodated.

In detail, the link insertion hole 135 may include an extension part receiving hole 137 in which the link extension part 320 of the link 300 to be described later is accommodated, and the head part 310 of the link 300 is accommodated. The head receiver 136 may be included.

The extension receiver 137 may be formed to have a diameter smaller than that of the head receiver 136.

In addition, a recessed female thread may be formed on an inner circumferential surface of the extension receiver 137.

On the other hand, the link 300, when viewed from the side, such as a screw or bolt may have a substantially 'T' shape.

The link 300 may include a head part 310 and an extension part 320 extending from the head part 310. In addition, the link 300 may include a fastening member insertion hole 330 into which the screw body of the screw is inserted.

The fastening member insertion hole 330 may penetrate the head portion 310 and extend into the extension portion 320.

On the inner circumferential surface of the fastening member insertion hole 330, a screw thread interlocked with a screw thread formed on the screw body may be formed. At this time, one of the screw thread formed in the screw body and the screw thread formed in the fastening member insertion hole 330, one may be formed of a female thread and the other may be formed of a male thread.

The head portion 310 may be formed in a disk shape having a predetermined thickness.

The head portion 310 is formed to have a thickness equal to the depth of the head portion receiving portion 136 or thinner than the depth of the head portion receiving portion 136 so that the head portion 310 can be inserted into the head portion receiving portion 136. Can be. The outer diameter of the head portion 310 may be smaller than the inner diameter of the head portion receiving portion 136 and larger than the extension portion receiving portion 137. Therefore, the head portion 310 may be seated on the bottom surface of the head portion receiving portion 136 outside the extension portion receiving portion 137.

The extension part 320 may extend downward from the center of the lower surface of the head part 310. The extension part 320 may be formed to have an outer diameter smaller than the inner diameter of the extension part receiving part 137 to be inserted into the extension part receiving part 137.

Protruding male threads 321 may be formed on an outer circumferential surface of the extension part 320. Therefore, the extension part 320 may be inserted into the extension part receiving part 137 by interlocking with the female thread formed in the extension part receiving part 137 by the rotation of the head part 310.

Of course, the male thread is formed on the extension receiving port 137 and the female thread may be formed on the extension 320.

The lower end of the extension portion 320 may be formed to be inclined so that the outer diameter is narrowed toward the lower side. Therefore, the insertion position can be aligned by the inclined surface when inserted into the extension receiving port (137).

On the outer circumferential surface of the extension 320, a cutout 322 may be formed in which a portion of the outer circumferential surface is cut.

The cutout 322 may be formed vertically long in the longitudinal direction of the extension 320, and the fastening member insertion hole 330 may be opened through the cutout 322. In this case, the cutout 322 may be spaced apart from the top and bottom of the extension 320, and may extend from a position adjacent to the top to a position adjacent to the bottom of the extension 320.

Deformation of the extension part 320 and the fastening member insertion hole 330 may be possible by the cutout 322.

Since the extension part 320 and the fastening member insertion hole 330 are deformable, the extension part 320 may be easily inserted into the extension part receiving part 137 even if the size is slightly different. In addition, the screw may be easily inserted into the fastening member insertion hole 330.

That is, the extension 320 allows flexible correspondence to the dimensional tolerance between the link insertion hole 135 and the link 300 and the screw, so that the link 300 is broken or the drain pan ( Damage to 100 can be prevented.

On the other hand, the fastening member insertion hole 330 may be formed to be somewhat narrower than the portion is inserted into the screw, so that when the screw is inserted by the cutout 322 can be expanded. In this case, when the screw is inserted, the fastening member insertion hole 330 is expanded, and the outer circumferential surface and the screw thread of the extension part 320 may be in close contact with the inner circumferential surface of the extension part receiving port 137. Therefore, more rigid coupling of the screw, the link 300 and the drain pan 100 is made, and the control box 50 can be more firmly fixed.

On the other hand, the lower surface of the extension 320 may be shielded. That is, the fastening member insertion hole 330 extends to the position spaced apart from the lower surface of the extension portion 320, it can be opened only upward and shielded downward. Accordingly, foreign matters may be introduced into the link insertion holes 135 or moisture may be prevented from flowing through the fastening member insertion holes 333.

Meanwhile, an inlet of the fastening member insertion hole 330 may be opened at the center of the upper surface of the head 310.

On the upper surface of the head portion 310, a sloping surface inclined downward toward the fastening member insertion hole 330 may be formed around the fastening member insertion hole 330. Therefore, when the screw is inserted into the fastening member insertion hole 330, the insertion position may be guided by the inclined surface.

On the upper surface of the head portion 310, a mechanism insertion portion 311 may be formed that can be coupled to the mechanism for rotating the link 300 for the attachment and detachment of the link 300.

The instrument insertion portion 311 may be radially formed around the fastening member insertion hole 330, and may be recessed so that a mechanism for rotating the link 300 may be inserted.

For example, the mechanism may be a '-' type driver or a '+' type driver. The instrument insertion hole 311 may be formed in a '-' shape extending in opposite directions with respect to the fastening member insertion hole 330. Alternatively, the instrument insertion hole 311 may be formed in a '+' shape extending radially around the fastening member insertion hole 330.

Of course, the instrument insertion portion 311 may be formed in various shapes according to the type of the instrument. In addition, a variety of mechanisms capable of rotating the link 300 may be used as the mechanism, and a dedicated mechanism for rotating the link 300 may be provided.

On the other hand, the link 300 may be formed of a plastic material, it may be formed of a plastic material having a predetermined elastic force. Since the link 300 is formed of a material having a predetermined elastic force, the elastic deformation of the extension part 320 by the cutout 322 may be performed. For example, the link 300 may be formed of a polypropylene (PP) material.

In order to fix the control box 50 to the drain pan 100, first, the link 300 may be inserted into the link insertion hole 135. The link 300 may be inserted into the link insertion hole 135 by rotation, and may be firmly fixed by the combination of the screw thread formed on the outer circumferential surface of the extension part 320 and the thread thread formed on the link insertion hole 135. Can be.

With the link 300 positioned at the link insertion hole 135, the control box 50 may be positioned such that the fastening portion 52 of the control box 50 is positioned above the link 300. Can be. In this case, the fastening part through hole 53 formed in the fastening part 52 may be aligned and positioned on the same extension line as the fastening member insertion hole 330.

In the state where the hole formed in the fastening part 52 and the fastening member insertion hole 330 are aligned, the screw 400 is inserted into the fastening member insertion hole 330 by passing through the hole formed in the fastening part 52. You can.

The screw 400 may be inserted into the fastening member insertion hole 330 by the rotation, and is firmly fixed by the combination of the screw thread formed in the screw body and the screw thread formed in the fastening member insertion hole 330. Can be.

In addition, when the screw head contacts the fastening part 52 by the insertion of the screw 400 to restrain the fastening part 52 with the link 300, the control box 50 is fixed. This can be done.

When the screw body is inserted into the fastening member insertion hole 330, the extension portion 320 is deformed by the incision 322, pressed toward the inner peripheral surface of the extension portion receiving port 137 and more closely Can be.

Therefore, the link 300 and the drain pan 100 may be more firmly coupled, such that the control box 50 may be more firmly fixed.

FIG. 13 is a view illustrating a coupling structure of a drain pan and a cabinet according to an embodiment of the present invention, FIG. 14 is a cross-sectional view of an indoor unit cut out based on 14′-14 ″ in FIG. 13, and FIG. 15 is a view of the present invention. 16 is a perspective view showing an upper structure of the fixing member according to an embodiment, and FIG. 16 is a perspective view showing a lower structure of the fixing member according to an embodiment of the present invention.

The drain pan 100 may be fixed to the cabinet 10. Therefore, the drain pan 100 transmits the load to the cabinet 10. In this case, the drain pan 100 may be fixed to the bracket 90 provided in the out case 11.

On the other hand, when the drain pan 100 is directly fixed to the bracket 90, excessive stress may occur in the portion coupled to the bracket 90. In addition, since the drain pan 100 is formed of an EPP material, it may be unreasonable to endure the stress generated in the portion coupled to the bracket 90. That is, the portion that is coupled with the bracket 90 may be damaged, significantly lowering the foaming ratio of the EPP raw material in order to secure the strength for preventing this may cause a large increase in material cost.

In order to prevent such a problem, a fixing member 200 connecting the drain pan 100 and the bracket 90 may be provided.

The fixing member 200 is coupled to the bracket 90 and the drain pan 100, and distributes the stress applied to the drain pan 100 to a wider area of the drain pan 100 to the EPP material. Damage to the drain pan 100 may be prevented.

The fixing member 200 may be provided in plurality at positions spaced apart from each other along the bottom edge of the drain pan 100. In addition, the bracket 90 may be provided on the outer circumferential surface of the outer case 11, but may be provided in plurality at positions corresponding to the fixing member 200.

The fixing member 200 may be coupled to the bracket 90 and the drain pan 100 by a fastening member. Hereinafter, for convenience of description, the fastening member will be described in detail by taking an example of the screw 400.

The screw 400 is a fastening member that is generally used, has a substantially 'T' shape when viewed from the side, and a screw thread may be formed on an outer circumferential surface thereof. In detail, the screw 400 may include a screw head exposed to the outside and a screw body extending from the head and having a thread formed on an outer circumferential surface thereof.

In detail, the fixing member 200 may include a plate-shaped fixing member body 210 having a predetermined thickness.

The fixing member body 210 may include a first body 211 positioned on a bottom surface of the drain pan 100 and an outer side of the drain pan 100 from the first body 211 and extending from the bracket. It may include a second body 212 positioned on the lower surface of the (90).

The bracket 90 may be coupled to an outer surface of the out case 11, and a fixing member coupling portion 91 coupled to the second body 212 may be formed at one side thereof. The fixing member coupling portion 91 may be formed by bending an upper end of the bracket 90 vertically outward.

Meanwhile, a recessed fixing member guide groove 170 may be formed on the bottom surface of the drain pan 100 to accommodate the first body 211. The fixing member guide groove 170 may be recessed in a shape corresponding to the first body 211. The first body 211 may be guided to a position coupled to the drain pan 100 by the fixing member guide groove 170.

Meanwhile, the fixing member body 210 may be formed in a flat plate shape, and the lower surface of the fixing member coupling portion 91 may be positioned at the same height as the recessed surface of the fixing member guide groove 170. Therefore, the fixing member body 210 may be in close contact with the bottom surface of the fixing member coupling portion 91 and the recessed surface of the fixing member guide groove 170.

At this time, the region located between the fixing member guide groove 170 and the fixing member coupling portion 91 at the lower circumferential surface of the outer case 11 is cut off to prevent interference with the fixing member 200. Can be prevented.

On the other hand, the first body 211 is formed in a larger area than the second body 212, so that the stress applied to the drain pan 100 is dispersed to a larger area of the drain pan 100 Can be. The first body 211 may be formed to extend in the horizontal direction along the bottom edge of the drain pan 100.

A second body through hole 240 through which the screw body penetrates may be formed in the second body 212. The fixing member coupling part 91 may include a coupling part through hole 92 into which the screw body penetrating the second body through hole 240 is inserted.

The fixing member coupling part 91 and the second body through hole 240 may be formed in plural numbers spaced apart from each other, and may be spaced apart in a direction in which a circumferential surface of the out case 11 extends.

Meanwhile, the first body 211 may be provided with a plurality of first fixing protrusions 220 inserted into the bottom surface of the drain pan 100. The plurality of first fixing protrusions 220 may be spaced apart from each other on the bottom surface of the first body 211.

In addition, a second fixing protrusion 230 inserted into the bottom surface of the drain pan 100 may be further formed on the first body 211. The second fixing protrusion 230 may be formed in one or a plurality. Hereinafter, only one second fixing protrusion 230 is formed.

In detail, the first fixing protrusion 220 may extend upward from an upper surface of the first body 211 in contact with the lower surface of the drain pan 100.

The first fixing protrusion 220 may be provided with a fastening member restraint 225 through which the screw body is inserted through the first body 211.

The fastening member restraint 225 may extend from the lower surface of the first body 211 to the center of the first fixing protrusion 220 and may be formed through the center of the fixing protrusion 220. have.

The first fixing protrusion 220 may include a plurality of protrusions 221 extending upward along the circumference of the fastening member restraint 225.

The plurality of protruding protrusions 221 may be separated from each other so that the screw body may be opened to the outside when the screw body is inserted into the fastening member restraint 225.

In more detail, the first fixing protrusion 220 extends in a communication shape extending upward from an upper surface of the first body 211, and a circumferential surface is cut up and down at a predetermined interval so that the plurality of protrusions ( 221 can be considered to form.

The plurality of protruding protrusions 221 may be formed to be inclined inwardly as the upper end thereof upwards to be easily inserted into the bottom surface of the drain pan 100.

On the other hand, the peripheral area of the fastening member restraint 225 in the lower surface of the first body 211 may be formed recessed. Therefore, in the state where the screw body is inserted into the fastening member restraint 225, the screw head is accommodated in the first body 211, so as not to protrude downward than the lower surface of the first body 211. Can be. Therefore, it is possible to prevent the interference between the assembly of the indoor unit 1 by the screw head.

On the other hand, since the second body 212 is located outside the cabinet 10, a problem that interference occurs by the screw head may not occur. Therefore, in order to reinforce the strength, the peripheral area of the second body through hole 240 may not be recessed in the lower surface of the second body 212. That is, the peripheral area of the second body through hole 240 may be formed thicker than the peripheral area of the fastening member restraint hole 225.

On the other hand, the second fixing protrusion 230 may be formed long in the circumferential surface extending direction of the adjacent drain pan (100). That is, the second fixing protrusion 230 may be formed to be parallel to the side of the adjacent drain pan 100.

For example, the second fixing protrusion 230 may be formed in a square pillar shape extending in the horizontal direction. At this time, the protruding end of the second fixing protrusion 230 may be rounded to facilitate insertion into the drain pan 100.

Of course, the second fixing protrusion 230 may not be formed in parallel with the circumferential surface of the drain pan 100, or may be formed in a shape having a bent cross section or a rounded cross section.

Meanwhile, the second fixing protrusion 230 may be located in the spaced apart area of the plurality of first fixing protrusions 220. That is, the plurality of first fixing protrusions 220 may be arranged to surround the second fixing protrusions 230.

For example, three first fixing protrusions 220 may be formed. When the second fixing protrusion 230 extends to the left and right side and the front side of the second fixing protrusion 230 facing the inner side of the cabinet 10, the three of the first fixing protrusion 220 The pair may be disposed at left and right sides of the second fixing protrusion 230. In addition, the other first fixing protrusion 220 may be spaced apart from the front center of the second fixing protrusion 230 to the front.

Meanwhile, the plurality of first fixing protrusions 220 may be spaced apart along the bottom edge of the first body 211, and may be spaced apart from each other as much as possible. Therefore, the stress applied to the drain pan 100 can be dispersed in the widest area as much as possible, thereby preventing damage to the drain pan 100.

On the other hand, in the fixing member guide groove 170, the first projection receiving port 171 into which the first fixing projection 220 is inserted, and the second projection receiving opening (2) into which the second fixing projection 230 is inserted ( 172 may be formed.

The first protrusion receiver 171 may be formed in a number corresponding to the first fixed protrusion 220, and may be recessed in a shape corresponding to the first fixed protrusion 220. In addition, the second protrusion receiving hole 172 may be recessed in a number and a shape corresponding to the second fixing protrusion 230.

In order to fix the fixing member 200 to the drain pan 100, first, the first fixing protrusion 220 and the second fixing protrusion 230 may include the number of the first protrusion receiving holes 171 and the second protrusion. It can be inserted into the tool 172. In a state where the first fixing protrusion 220 and the second fixing protrusion 230 are fully inserted, the upper surface of the first body 211 may contact the recessed surface of the fixing member guide groove 170. . Thereafter, by inserting a screw into the fastening member restraint 225, the fixing member 200 and the drain pan 100 can be completed.

On the other hand, the inner surface of the plurality of protruding projections 221 surrounding the fastening member restraint 225 may be formed with a screw thread interlocked with the thread formed on the screw body. Thus, the screw 400 can be inserted by rotation, it may be possible to more firmly fixed by the thread.

When the screw 400 is inserted into the fastening member restraint 225, the plurality of protruding protrusions 221 are opened to the outside to be in close contact with the inner surface of the first protrusion receiving port 171 to improve the fastening strength. have.

On the other hand, since the second fixing protrusion 230 extends in the horizontal direction to have a wide surface area, the second fixing protrusion 230 may be in surface contact with the inner surface of the second protrusion receiving port 172. Therefore, by preventing the shaking of the fixing member 200 to be more securely coupled with the drain pan 100, and to distribute the stress to a wide area of the drain pan 100 to the drain pan 100 Can be prevented from being damaged.

In addition, a hot melt layer may be provided on the surface of the second fixing protrusion 230. The second fixing protrusion 230 may be heat-treated to melt the hot melt layer in a state where the second fixing protrusion 230 is inserted into the second protrusion receiving hole 172. As the hot melt layer is rusted and then hardened again, the second fixing protrusion 230 and the drain pan 100 may be more firmly fixed, and thus the fastening strength may be improved.

In a state where the drain pan 100 is positioned in the cabinet 10, the fixing member 200 fixed to the drain pan 100 may be aligned with the bracket 90. That is, the coupling part through hole 92 and the second body through hole 240 may be positioned on the same extension line. In this state, the screw 400 may pass through the coupling part through hole 92 and the second body through hole 240 to fix the fixing member 200 to the bracket 90. Therefore, the drain pan 100 may be firmly fixed to the bracket 90 through the fixing member 200.

Claims (16)

A cabinet installed on the ceiling and forming an accommodation space opened downward;
A fan assembly provided in the accommodation space;
A heat exchanger disposed along a circumference of the fan assembly in the accommodation space;
A drain pan provided at a lower portion of the cabinet to support the heat exchanger and to collect condensate generated by the heat exchanger;
The drain pan,
Indoor unit of an air conditioner, characterized in that molded in one piece of EPP material. The method of claim 1,
The drain pan,
An indoor unit of an air conditioner, wherein the air conditioner is molded from an EPP raw material having a foaming ratio of 15 to 30 times. The method of claim 1,
The drain pan,
An indoor unit of an air conditioner, wherein the air conditioner is molded from an EPP raw material having an expansion ratio of 15 times or more and 18 times or less. The method of claim 1,
At least a portion of the surface of the drain pan, the indoor unit of the air conditioner, characterized in that the glazing surface treatment of the strength is increased by solidifying after melting the EPP raw material. The method of claim 1,
The drain pan,
A drain pan body shielding an accommodation space of the cabinet;
A suction opening that is opened in the center of the drain pan body and forms a passage through which external air is sucked into the cabinet;
A discharge opening that is opened along an edge of the drain pan body and forms a passage through which air exchanged with the heat exchanger is discharged;
An indoor unit of an air conditioner, comprising: a recess formed in a shape corresponding to a lower end of the heat exchanger on an upper surface of the drain pan body facing the inside of the accommodation space and accommodating a lower end of the heat exchanger; . The method of claim 5,
On the bottom surface of the support portion on which the lower surface of the heat exchanger is seated, a plurality of ribs are formed spaced apart from each other,
The heat exchanger indoor unit of the air conditioner, characterized in that supported by the plurality of ribs. The method of claim 5,
The drain pan,
A discharge part formed in the upper surface of the drain pan body in a depth corresponding to the support part and collecting condensed water collected in the support part;
A discharge port formed in the discharge part and configured to discharge condensed water;
Is inserted into the outlet, the rubber cap for shielding the outlet; Indoor unit of the air conditioner comprising a. The method of claim 7, wherein
The discharge unit, the indoor unit of the air conditioner, characterized in that a plurality of projections spaced apart from each other along the outer periphery of the discharge port so as to filter foreign matter contained in the condensate. The method of claim 7, wherein
The inner peripheral surface of the discharge port,
An indoor unit of an air conditioner, wherein the glazing surface treatment is performed to solidify the EPP raw material after melting. The method of claim 7, wherein
The support portion and the discharge portion,
An indoor unit of an air conditioner, wherein the glazing surface treatment is performed to solidify the EPP raw material after melting. The method of claim 5,
An orifice for guiding air passing through the suction opening to the fan assembly,
The orifice is indoor unit of the air conditioner, characterized in that mounted to the drain pan. The method of claim 11,
On the lower surface of the drain pan, a stepped portion is formed on the outer periphery of the suction opening,
The orifice is
An orifice body covering the suction opening and inserted into the stepped portion;
An orifice ball opening in an area located inside the suction opening in the orifice body;
And a guide portion extending upwardly around the orifice ball and extending through the suction opening toward the fan assembly. The method of claim 12,
The orifice body has a plurality of through holes through which the fastening member penetrates in an area overlapping the stepped portion, and is mounted to the drain pan by the fastening member. The method of claim 5,
It includes a control box for controlling the operation of the fan assembly,
The control box is an indoor unit of the air conditioner, characterized in that mounted to the drain pan. The method of claim 14,
On the lower surface of the drain pan, a stepped portion is formed on the outer periphery of the suction opening,
The control box is inserted into one side of the step portion, the indoor unit of the air conditioner, characterized in that to cover a portion of the suction opening. The method of claim 15,
The control box,
A control box body forming an outer shape and having a printed circuit board electrically connected to the fan assembly therein;
And a fastening part extending outwardly from the control box body and overlapping a lower surface of the drain pan outside the stepped part and having a hole through which the fastening member penetrates.

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