CN117053294A

CN117053294A - Air conditioner

Info

Publication number: CN117053294A
Application number: CN202310544615.XA
Authority: CN
Inventors: 崔成植; 文栋洙; 金江永; 金学载; 朴玟奎; 李宗哲; 金旻奎; 金亨俊
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2022-05-13
Filing date: 2023-05-15
Publication date: 2023-11-14
Also published as: KR20230158955A; KR20230159335A; KR20230159336A; KR20230159334A; KR102666142B1; KR102666143B1; KR20240017881A; KR102674816B1

Abstract

The present invention relates to an air conditioner. An air conditioner according to an aspect of the present invention includes: a housing provided with a front plate formed with a suction port and a discharge port; a fan disposed inside the housing; a discharge guide disposed at the discharge port and provided with a guide portion having a surface bent in a discharge direction of air; and a vane rotatably disposed at the discharge port, wherein a protrusion having a surface bent in the discharge direction is provided on a downstream side of the discharge guide of the vane, whereby the phenomenon that air discharged through the discharge port is again introduced into the suction port can be prevented.

Description

Air conditioner

Technical Field

The present invention relates to an air conditioner, and more particularly, to an air conditioner provided in a window.

Background

An air conditioner is a device that cools, heats, or purifies indoor air sucked in, and supplies the cooled indoor air to a room.

The air conditioner may be installed in a window, and may suck indoor air to exchange heat, then supply the air to the indoor space, and may suck outdoor air to exchange heat, and then discharge the air to the outdoor space. In the case of such a window type air conditioner, an indoor fan and an indoor heat exchanger for flowing indoor air are disposed inside the casing, and an outdoor fan and an outdoor heat exchanger for flowing outdoor air are disposed outside the casing.

However, the conventional window type has a problem in that the size of the product is increased by disposing members for forming the flow path of the indoor air and the flow path of the outdoor air, and it is difficult to install the window.

Korean patent document 10-2019-0078874 discloses an air conditioner provided to a window, but has a problem in that the volume of a product protruding from the window into the room becomes large because the indoor side suction port is located laterally and the discharge port is located frontward.

In addition, in korean patent document 10-2019-0130477, since the indoor side suction port and the discharge port are located adjacent to each other, there is a problem in that air supplied into the room through the discharge port needs to flow into the suction port again, resulting in a reduction in the efficiency of the air conditioner.

Prior art literature

Patent literature

1. Korean patent document 10-2019-013477

2. Korean patent document 10-2019-0078874

Disclosure of Invention

The present invention aims to solve the above-mentioned problems and other problems.

The invention also aims to improve the efficiency of the air conditioner.

The present invention also aims to reduce the size of the air conditioner.

The present invention also provides an air conditioner in which an indoor side suction port and a discharge port are located on the same plane.

The present invention also aims to prevent the phenomenon that air discharged through the discharge port flows into the suction port again.

The invention also aims to provide an air conditioner capable of reducing noise.

The invention also aims to provide an air conditioner with simplified structure for preventing return air.

The present invention also aims to increase the amount of air supplied into a room by preventing return air to a suction port.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

An air conditioner according to the present invention for achieving the above object includes a casing provided with a front plate formed with a suction port and a discharge port.

The air conditioner includes a fan disposed inside the housing.

The air conditioner includes a discharge guide disposed at the discharge port.

The ejection guide is provided with a guide portion having a surface that is bent in the ejection direction of air.

The air conditioner includes a vane rotatably disposed at the discharge port.

In the blade, a projection having a surface bent in the discharge direction is provided on a downstream side of the discharge guide.

The housing may be configured to a window.

The discharge guide and the blade may be positioned on the indoor side with respect to the window.

The suction port and the discharge port may be located on the indoor side with respect to the window.

The suction port and the discharge port may extend in the up-down direction.

The suction port and the discharge port may be spaced apart from each other on the same plane of the front plate.

The air conditioner may include a grill coupled to the front plate and disposed at the suction port.

The grid and the spit guide may be spaced apart from each other along a front aspect of the housing.

The air conditioner may include a front body coupled to the front plate.

The front body may be disposed between the suction port and the discharge port to divide the suction port and the discharge port.

The spit guide may include an extension protruding toward the blade.

The ejection guide may include a bending portion that bends in the up-down direction from the extension portion.

The guide portion may be opposite to the blade.

The air conditioner may include a first guide space formed between a bent surface of the guide portion and the front body.

The air conditioner may include a second guide space formed between the discharge guide and the vane.

The width of the first guide space may be greater than the width of the second guide space.

The interval between the discharge guide and the vane may be greater than the height of the protrusion.

The blade may comprise a blade body.

The protrusion may protrude from the blade body.

The blade may include a first edge located further forward than the projection.

The blade may include a second edge located further rearward than the projection.

In the ejection direction, the ejection guide may be located between the projection and the second edge.

The length between the second edge and the projection may be greater than the length between the first edge and the projection.

The projection and the second edge may be located further forward than the front end portion of the housing.

The air conditioner may include a support portion protruding from the front body toward the vane.

The air conditioner may include a rotation support shaft fixed to the support portion.

The blade may be rotatably coupled to the rotation support shaft.

The discharge guide may be provided in plural in a vertically spaced manner.

The support portion and the rotation support shaft may be disposed between the plurality of discharge guides.

The air conditioner may include a stabilizer disposed on a downstream side of the fan.

The stabilizer may be opposite to the spit guide.

The stabilizer may include a first guide wall extending toward the spit guide.

The stabilizer may include a second guide wall bent from the first guide wall in a direction away from the blade.

The stabilizer may include a third guide wall extending forward from the second guide wall.

In the ejection direction, the ejection guide may be opposite to the second guide wall.

The stabilizer may include a first stabilizer protrusion protruding toward the discharge port.

In the ejection direction, the guide portion may be opposite to the first stabilizer protrusion.

The blade may include a second edge located further downstream than the first stabilizer protrusion.

The housing may be disposed at a window dividing an indoor space and an outdoor space.

The fan may include an indoor fan that blows indoor air.

The fan may include an outdoor fan that blows outdoor air.

The housing may include a first space in which the indoor fan is disposed.

The housing may include a second space in which the outdoor fan is disposed.

The air conditioner may include a partition wall dividing the first space and the second space.

The air conditioner may include a discharge sidewall extending forward.

The discharge side wall may be spaced apart from the front body, and the discharge port may be formed between the discharge side wall and the front body.

The details of other embodiments are included in the detailed description and the accompanying drawings.

According to at least one of the embodiments of the present invention, it is possible to improve the efficiency of the air conditioner by increasing the amount of air blown into the room.

According to at least one embodiment of the present invention, the indoor side suction port and the discharge port are positioned on the same plane, whereby the size of the air conditioner can be reduced.

According to at least one embodiment of the present invention, the indoor side suction port and the discharge port are positioned on the same plane, so that the volume of the air conditioner protruding from the window to the indoor space can be reduced.

According to at least one of the embodiments of the present invention, the air flowing along the vane does not flow into the suction port again by the convex portion of the vane.

According to at least one of the embodiments of the present invention, the air discharged through the discharge port does not flow into the suction port again by the discharge guide.

According to at least one of the embodiments of the present invention, the formation of vortex is suppressed by the protruding portion of the vane and the discharge guide, whereby noise of the air conditioner can be reduced.

According to at least one of the embodiments of the present invention, the air first guided to the indoor space by the spouting guide and the protrusion of the vane may be guided to the indoor space along the protrusion of the vane a second time.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

Drawings

Fig. 1 is a perspective view of an air conditioner according to an embodiment of the present invention.

Fig. 2 is a perspective view of an air conditioner according to an embodiment of the present invention.

Fig. 3 is an exploded view of an air conditioner according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of an air conditioner according to an embodiment of the present invention.

Fig. 5 is a part of an air conditioner according to an embodiment of the present invention.

Fig. 6 is a part of an air conditioner according to an embodiment of the present invention.

Fig. 7 is a part of an air conditioner according to an embodiment of the present invention.

Fig. 8 is a part of a cross-sectional view of an air conditioner according to an embodiment of the present invention.

Fig. 9 is a part of a cross-sectional view of an air conditioner according to an embodiment of the present invention.

Fig. 10 is a part of an air conditioner according to an embodiment of the present invention.

Fig. 11 is a perspective view of a blade according to an embodiment of the present invention.

Fig. 12 is a part of a cross-sectional view of an air conditioner according to an embodiment of the present invention.

Fig. 13 is a contour diagram for explaining the effect of the air conditioner according to the embodiment of the present invention.

Fig. 14 is a part of a cross-sectional view of an air conditioner according to another embodiment of the present invention.

Fig. 15 is a contour diagram for explaining the effect of an air conditioner according to another embodiment of the present invention.

Description of the reference numerals

1: air conditioner 10: shell body

11: suction port 12: discharge port

20: blade 22: projection part

70: discharge guide 73: guide part

Detailed Description

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings. The same or similar constituent elements are given the same reference numerals irrespective of the drawing numbers, and repetitive description thereof will be omitted.

The words "module" and "part" used in the following description for the constituent elements are merely given or mixed in consideration of the convenience of writing of the specification, and do not have mutually exclusive meanings or roles.

In the description of the embodiments disclosed in the present specification, if it is determined that a specific description of the related known technology will cause confusion with respect to the technical ideas of the embodiments disclosed in the present specification, a detailed description thereof will be omitted. The drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical ideas disclosed in the present specification should not be limited to the drawings, but should cover all modifications, equivalents, and alternatives included in the ideas and technical scope of the present specification.

Ordinal numbers such as first, second, etc., may be used to describe various elements, but are not limited by the terms. The term is used only for the purpose of distinguishing one structural element from other structural elements.

If a component is referred to as being "connected" or "in contact" with another component, it can be directly connected or in contact with the other component, but can be taken as having the other component in between. Conversely, if a component is referred to as being "directly connected" or "directly contacted" with another component, it should be understood that there are no other components present therebetween.

Unless the context clearly indicates otherwise, singular expressions include plural expressions.

An air conditioner 1 will be described with reference to fig. 1.

The air conditioner 1 may be disposed in a window assembly 9. The air conditioner 1 can be detachably disposed in the window unit 9.

The window assembly 9 may include a window frame 91 and a window 92. The window frame 91 may form the exterior shape of the window assembly 9. A space may be formed at the inner side of the window frame 91. The window 92 is movable in the inner space of the window frame 91. Glass (Glass) may be fixed to the inner side of the window 92.

The air conditioner 1 may be disposed between the window frame 91 and the window 92. A space 93 may be formed between the window frame 91 and the window 92. The air conditioner 1 may be disposed in a space 93 between the window frame 91 and the window 92.

A kit 94 may be provided between the air conditioner 1 and the window assembly 9. The kit 94 may secure the air conditioner 1 to the window assembly 9. The kit 94 may seal a gap between the air conditioner 1 and the window assembly 9.

The air conditioner 1 may be fixed to the window assembly 9. The Indoor Space (Indoor Space) and the Outdoor Space (Outdoor Space) may be divided with reference to the window assembly 9. In the following description of the air conditioner 1, the indoor side facing the indoor space may be defined as the front side, and the outdoor side facing the outdoor space may be defined as the rear side.

The air conditioner 1 can suck in indoor air and transfer the sucked indoor air to an indoor space. The air conditioner 1 can suck outdoor air and transfer the sucked outdoor air to an outdoor space. The air conditioner 1 may include a suction port 11 and a discharge port 12. The air in the indoor space can flow into the air conditioner 1 through the suction port 11. The air flowing into the air conditioner 1 through the suction port 11 can be supplied to the indoor space through the discharge port 12.

The suction port 11 may extend in the up-down direction. The discharge port 12 may extend in the up-down direction. The discharge port 12 may be spaced apart from the suction port 11 in a direction crossing the extending direction of the suction port 11.

The suction port 11 and the discharge port 12 may be opened to the indoor space. The suction port 11 and the discharge port 12 may be located on the same plane. The suction port 11 and the discharge port 12 may be spaced apart in the horizontal direction. The air conditioner 1 may protrude from the window assembly 9 toward the indoor space.

The air in the indoor space can flow into the air conditioner 1 through the suction port 11 and exchange heat. The air heat-exchanged inside the air conditioner 1 can be supplied to the indoor space through the discharge port 12 spaced apart from one side of the suction port 11.

The air conditioner 1 will be described with reference to fig. 2.

The air conditioner 1 may include a housing 10. The housing 10 may have a space inside. The casing 10 may form the external appearance of the air conditioner 1.

The housing 10 may include a front housing 13. The front case 13 may be configured to face the indoor side. A portion of the front housing 13 may protrude from the window assembly 9 toward the indoor space.

The housing 10 may include a rear housing 14. The rear housing 14 may be configured to face the outdoor side. A portion of the rear housing 14 may protrude from the window assembly 9 toward the outdoor space. The rear case 14 may be combined with the front case 13.

The suction port 11 may be formed at the front case 13. The suction port 11 may be formed at the front of the front case 13. The discharge port 12 may be formed in the front case 13. The discharge port 12 may be formed in a front face of the front case 13. The suction port 11 and the discharge port 12 may be spaced apart from each other in front of the front case 13.

The air conditioner 1 may include a grill 15. The grid 15 is detachable from the front face of the front case 13. The grill 15 may be disposed at the suction port 11. The air in the indoor space can flow into the air conditioner 1 through the grill 15. The grid 15 may be spaced from the discharge opening 12.

The air conditioner 1 may include a vane 20. The vane 20 may be located in front of the front housing 13. The vane 20 may be disposed at the discharge port 12. The vane 20 can open and close the discharge port 12. The vane 20 may be rotatably disposed at the discharge port 12. The vane 20 may be rotatably coupled with the front housing 13. The vanes 20 may be spaced from the grid 15. The vane 20 can adjust the wind direction of the air discharged through the discharge port 12.

The air conditioner 1 will be described with reference to fig. 3.

Fig. 3 is a view showing the air conditioner 1 in an exploded manner.

The front housing 13 may include a front plate 133. The front plate 133 may form a front aspect of the front housing 13. The suction port 11 and the discharge port 12 may be formed in the front plate 133.

The front plate 133 may include a first plate 131. The first plate 131 may extend in the up-down direction. The suction port 11 may be formed by opening at the first plate 131.

The front plate 133 may include a second plate 132. The second plate 132 may extend in the up-down direction. The discharge port 12 may be formed by opening in the second plate 132.

The first plate 131 and the second plate 132 are divided from each other. The first plate 131 and the second plate 132 may be spaced apart in a horizontal direction.

The grid 15 is detachable from the front plate 133. The grill 15 may be coupled in front of the suction port 11. The grid 15 may be combined with the first plate 131.

The vane 20 may be rotatably coupled with the front plate 133. The vane 20 may be rotatably disposed at the discharge port 12. The blade 20 may be coupled with the second plate 132.

The front housing 13 may include a top plate 134. The top plate 134 may form the top surface of the front case 13. The top plate 134 may extend rearward from the front plate 133. The top plate 134 may be coupled with the rear housing 14.

The front housing 13 may include a first side plate 135. The first side plate 135 may form one side of the front case 13. The first side plate 135 may extend in the up-down direction. The first side plate 135 may be coupled with the rear case 14.

The front housing 13 may include a second side plate 136. The second side plate 136 may form the other side surface of the front case 13. The second side plate 136 may extend in the up-down direction. The second side plate 136 may be coupled with the rear housing 14.

The first side plate 135 and the second side plate 136 may be opposite to each other. The first side plate 135 and the second side plate 136 may form sides of the front case 13. The first side plate 135 and the second side plate 136 may be named "side plates".

The air conditioner 1 may include a module AS disposed inside the casing 10. The assembly AS may refer to a collection of components disposed inside the housing 10. The individual components constituting the assembly AS may be individually separated from the interior of the housing 10.

The air conditioner 1 may include a first unit 30. The first unit 30 may be disposed inside the case 10.

The air conditioner 1 may include a second unit 40. The second unit 40 may be disposed inside the case 10.

The air conditioner 1 may include a third unit 50. The third unit 50 may be disposed inside the case 10.

The first unit 30 and the second unit 40 may be combined in the up-down direction. At this time, a part of the components of the second unit 40 may be introduced into the inside of the first unit 30.

The second unit 40 and the third unit 50 may be combined in the front-rear direction. At this time, a part of the components of the third unit 50 may be combined with the first unit 30 in the front-rear direction.

However, the foregoing description of the first unit 30, the second unit 40, and the third unit 50 is for explaining the overall coupling structure of the air conditioner 1, and the division of each of the first unit 30, the second unit 40, and the third unit 50 is not strictly defined. That is, each of the aforementioned first unit 30, second unit 40, and third unit 50 may be a concept representing a part of the components disposed inside the housing 10. Each of the first, second and third units 30, 40 and 50 may be an assembly of a plurality of components, and the components constituting the respective units 30, 40, 50 may be individually separated from the respective units 30, 40, 50. The components constituting the respective units 30, 40, 50 may be individually separated to constitute separate units.

The air conditioner 1 may include a first body 31. The first unit 30 may include a first body 31. The first body 31 may be disposed inside the case 10.

The air conditioner 1 may include a second body 32. The first unit 30 may include a second body 32. The second body 32 may be disposed inside the case 10. The second body 32 may be disposed at the lower side of the first body 31.

The air conditioner 1 may include a cover 33. The first unit 30 may include a cover 33. The cover 33 may be disposed inside the case 10. The cover 33 may surround the first body 31.

The air conditioner 1 may include an indoor fan 34. The first unit 30 may include an indoor fan 34. The indoor fan 34 may be disposed inside the casing 10. The indoor fan 34 may be disposed inside the first body 31. The indoor fan 34 may be rotatably coupled with the first body 31.

The air conditioner 1 may include an outdoor fan 35. The first unit 30 may include an outdoor fan 35. The outdoor fan 35 may be disposed inside the casing 10. The outdoor fan 35 may be disposed inside the first body 31. The outdoor fan 35 may be rotatably coupled with the first body 31.

The indoor fan 34 and the outdoor fan 35 may be referred to as "fans".

The air conditioner 1 may include a compressor 41. The second unit 40 may include a compressor 41. The compressor 41 may be disposed inside the casing 10. The compressor 41 may compress a refrigerant. The compressor 41 may be disposed in an inner space of the second body 32.

The air conditioner 1 may include an outdoor heat exchanger 42. The second unit 40 may include an outdoor heat exchanger 42. The outdoor heat exchanger 42 may be disposed inside the casing 10. The outdoor heat exchanger 42 may exchange heat between the outdoor air and the refrigerant. The outdoor heat exchanger 42 may be disposed in an inner space of the first body 31. The outdoor air blown by the outdoor fan 35 may pass through the outdoor heat exchanger 42. The refrigerant discharged from the compressor 41 may flow into the outdoor heat exchanger 42 and exchange heat with the outdoor air.

The air conditioner 1 may include an expansion device 43. The second unit 40 may comprise an expansion device 43. The expansion device 43 may be disposed inside the housing 10. The expansion device 43 may expand the refrigerant. The expansion device 43 may be disposed in the inner space of the second body 32. The refrigerant having passed through the outdoor heat exchanger 42 can flow into the expansion device 43 to be expanded.

The air conditioner 1 may include an indoor heat exchanger 44. The second unit 40 may include an indoor heat exchanger 44. The indoor heat exchanger 44 may be disposed inside the casing 10. The indoor heat exchanger 44 may be disposed in an inner space of the first body 31. The refrigerant passing through the expansion device 43 may flow into the indoor heat exchanger 44 and exchange heat with indoor air.

The compressor 41, the outdoor heat exchanger 42, the expansion device 43, and the indoor heat exchanger 44 may be connected to each other by refrigerant piping (not shown).

The air conditioner 1 may include a base 45. The second unit 40 may include a base 45. The base 45 may form the bottom surface of the housing 10. The base 10 may be disposed under the first and second bodies 31 and 32. The compressor 41, the outdoor heat exchanger 42, the expansion device 43, and the indoor heat exchanger 44 may be disposed above the base 45.

The air conditioner 1 may include a control box 51. The third unit 50 may include a control box 51. The control box 51 may be disposed inside the housing 10. A controller (not shown) electrically connected to the vane motor 29 (see fig. 4), the indoor fan 34, the outdoor fan 35, the compressor 41, and the expansion device 43 may be disposed in the control box 51. The controller may be mounted to a PCB substrate. The controller may control the driving of the components 29, 34, 35, 41, 43.

The air conditioner 1 may include a third body 52. The third unit 50 may include a third body 52. The third body 52 may be disposed inside the case 10. The third body 52 may extend upward from the control box 51. A water pipe or a refrigerant pipe may be disposed inside the third body 52. The third body 52 may cover the water piping or the refrigerant piping.

The air conditioner 1 will be described with reference to fig. 4.

Fig. 4 is a cross-sectional view of the air conditioner 1 shown in fig. 2 cut in a horizontal direction.

Air of the indoor space may flow into the inside of the case 10 through the suction port 11. The air of the indoor space may flow into the inside of the case 10 through the grill 15.

The indoor heat exchanger 44 may be disposed obliquely inside the casing 10. The air flowing in through the suction port 11 can exchange heat with the refrigerant flowing in the indoor heat exchanger 44.

The indoor fan 34 may be disposed on the downstream side of the indoor heat exchanger 44. The indoor fan 34 may suck air outside the casing 10 through the suction port 11. The indoor fan 34 may be a cross flow fan.

The air blown by the indoor fan 34 can flow toward the discharge port 12. The vane 20 may be rotatably disposed at the discharge port 12. The vane 20 can open and close the discharge port 12 and adjust the flow direction of air discharged through the discharge port 12.

The air conditioner 1 may include a vane motor 29 that rotates the vanes 20. The vane motor 29 may be fixed to the inside of the housing 10. The vane motor 29 may be connected to the vane 20 through a motor shaft 291. The blade 20 may be rotated by driving of a blade motor 29.

The air conditioner 1 may include an outdoor suction port 16. Air of the outdoor space may flow into the inside of the case 10 through the outdoor suction port 16.

The air conditioner 1 may include a first outdoor grille 18. The first outdoor grille 18 may be disposed at the outdoor suction inlet 16. Air of the outdoor space may flow into the inside of the case 10 through the first outdoor grill 18.

The air conditioner 1 may include an outdoor discharge port 17. The air inside the casing 10 can be discharged to the outdoor space through the outdoor discharge port 17. The outdoor discharge port 17 is spaced apart from the outdoor suction port 16 in the horizontal direction. The outdoor discharge port 17 and the outdoor suction port 16 may be located on the same plane.

The air conditioner 1 may include a second outdoor grille 19. The second outdoor grille 19 may be disposed at the outdoor discharge port 19. The air inside the case 10 may be discharged to the outdoor space through the second outdoor grille 19. The second outdoor grid 19 may be spaced apart from the first outdoor grid 18 in a horizontal direction. The first outdoor grid 18 and the second outdoor grid 19 may be located on the same plane.

The outdoor suction port 16, the outdoor discharge port 17, the first outdoor grille 18, and the second outdoor grille 19 are disposed in the rear case 14 (see fig. 3).

The outdoor heat exchanger 42 may be disposed opposite the outdoor suction port 16. The air flowing in through the outdoor suction port 16 can exchange heat with the refrigerant flowing in the outdoor heat exchanger 42.

The outdoor fan 35 may be disposed on the downstream side of the outdoor heat exchanger 42. The outdoor fan 35 may suck air outside the casing 10 through the outdoor suction port 16. The outdoor fan 35 may be a cross flow fan.

The air blown by the outdoor fan 35 can flow toward the outdoor discharge port 17. The air blown by the outdoor fan 35 may be discharged to the outdoor space through the outdoor discharge port 17.

The air conditioner 1 may include a partition wall 36. The partition wall 36 may be disposed inside the housing 10. The partition wall 36 may extend to be bent in the horizontal direction. The partition wall 36 may be combined with both side walls of the housing 10.

The air conditioner 1 may include a first space 101. The first space 101 may be formed inside the case 10. Air of the indoor space may flow into the first space 101 through the suction port 11. The air flowing into the first space 101 can be blown by the indoor fan 34 and discharged into the indoor space through the discharge port 12. The indoor fan 34 and the indoor heat exchanger 44 may be disposed inside the first space 101.

The air conditioner 1 may include a second space 102. The second space 102 may be formed inside the case 10. Air of the outdoor space may flow into the second space 102 through the outdoor suction port 16. The air flowing into the second space 102 can be blown by the outdoor fan 35 and discharged to the outdoor space through the outdoor discharge port 17. The outdoor fan 35 and the outdoor heat exchanger 42 may be disposed inside the second space 102.

The first space 101 and the second space 102 may be divided by the partition wall 36. The partition wall 36 may be disposed between the first space 101 and the second space 102. The partition wall 36 may separate the first space 101 and the second space 102. When the inner space of the case 10 is divided, the first space 101 may be defined as an "indoor side", and the second space 102 may be defined as an "outdoor side".

The air conditioner 1 will be described with reference to fig. 5.

Fig. 5 is a view showing a part of the indoor side by cutting the air conditioner 1 in the horizontal direction.

The grid 15 may be combined with the front plate 133. By the suction force generated by the indoor fan 34, the air of the indoor space can pass through the indoor heat exchanger 44 via the suction port 11.

The air conditioner 1 may include a front body 137. The second plate 132 (refer to fig. 3) may be a part of the front body 137. The front body 137 may extend in the up-down direction. The front body 137 may be coupled with the front plate 133.

The front body 137 may be spaced apart from the grid 15. The front body 137 may be spaced apart from the suction port 11. The front plate 133 may include a separation rib 138, and the separation rib 138 protrudes between the front body 137 and the grid 15. The separation ribs 138 may define the front body 137 and the grid 15.

The air conditioner 1 may include a discharge sidewall 37. The discharge side wall 37 may extend forward from the partition wall 36 (see fig. 4). The discharge side wall 37 may be disposed inside the side plate 136. The ejection side wall 37 may be combined with the side plate 136. The discharge sidewall 37 may be opposite to the front body 137. The discharge sidewall 37 may be spaced apart from the front body 137 in a horizontal direction.

The discharge port 12 may be formed between the discharge sidewall 37 and the front body 137. The air blown by the indoor fan 34 may be discharged to the indoor space through the space between the discharge sidewall 37 and the front body 137.

The vane 20 may be rotatably disposed between the discharge sidewall 37 and the front body 137. When the vane 20 closes the discharge port 12, the guide surface 201 (see fig. 11) of the vane 20 may be opposed to the front face of the front body 137. When the vane 20 closes the discharge port 12, the second edge 25 (see fig. 8) of the vane 20 may be opposed to the distal end portion of the discharge sidewall 37.

The blade 20 may include a blade body 21. The vane body 21 may be rotatably disposed at the discharge port 12. The blade body 21 may be plate-shaped.

Blade 20 may include a protrusion 22. The protrusion 22 may protrude from the blade body 21. The protruding portion 22 may protrude from the blade body 21 toward the ejection guide 70. The protrusion 22 may have a curved shape bent in the flow direction of the air.

Blade 20 may include a first edge 23. The first edge 23 may refer to an edge facing the indoor side among both side edges of the vane 20. The first edge 23 may be located further downstream than the projection 22. The first edge 23 may be located further forward than the forward aspect of the housing 10.

Blade 20 may include a tab 24. The bump 24 may protrude from the blade body 21 toward the front body 137. The boss 24 may be integrally formed with the blade body 21. The projection 24 may be located further upstream than the projection 22. The plurality of bumps 24 may be arranged vertically at intervals.

The front body 137 may include a support portion 137a. The supporting portion 137a may protrude from the front body 137 toward the vane 20.

The front body 137 may include a rotation support shaft 137b. The rotation support shaft 137b may extend in the up-down direction. The rotation support shaft 137b may be fixed to the support portion 137a.

The boss 24 may be rotatably coupled with the rotation support shaft 137b. The boss 24 may surround the rotation support shaft 137b. When the blade 20 rotates, the boss 24 may rotate about the rotation support shaft 137b.

The air conditioner 1 may include a discharge guide 70. The ejection guide 70 may protrude from the front body 137 toward the blade 20. The discharge guide 70 may extend in the up-down direction. The ejection guide 70 may be located at the ejection port 12. The spit guide 70 may be positioned between the vane 20 and the grid 15. The air discharged through the discharge port 12 may pass through the discharge guide 70.

The spit guide 70 may include an extension 71. The extension 71 may protrude from the front body 137 toward the vane 20. The plurality of extending portions 71 may be arranged at intervals in the vertical direction.

The ejection guide 70 may include a bent portion 72. The bending portion 72 may be bent from an end of the extension portion 71. The bending portion 72 may extend in a direction intersecting the extending direction of the extending portion 71. The bending portions 72 may be arranged in plural at intervals in the vertical direction.

The ejection guide 70 may include a guide portion 73. The guide 73 may extend in the up-down direction. The guide portion 73 may be disposed between the plurality of extension portions 71. The guide portion 73 may be connected to the plurality of bent portions 72.

The spit guide 70 may include a guide space 74. The guide space 74 may be formed between the plurality of extensions 71. The guide space 74 may be formed between the guide portion 73 and the front body 137.

The flow direction of the air passing through the guide space 74 may be guided along one surface of the guide portion 73.

The air conditioner 1 may include a rear guide 61. The rear guide 61 may be disposed at a downstream side of the indoor fan 34. The air blown from the indoor fan 34 may flow along the surface of the rear guide 61.

The air conditioner 1 may include a stabilizer 62. The stabilizer 62 may be disposed at a downstream side of the indoor fan 34. The air blown from the indoor fan 34 may flow along the surface of the stabilizer 62.

The air conditioner 1 may include an auxiliary vane 63. The auxiliary blade 63 may be disposed on the downstream side of the indoor fan 34. The flow direction of the air blown from the indoor fan 34 may be guided by the auxiliary blade 63.

The flow direction of the air blown from the indoor fan 34 may be guided by the rear guide 61, the stabilizer 62, and the auxiliary blade 63. The rear guide 61, the stabilizer 62, and the auxiliary vane 63 may be located at an upstream side of the vane 20. The rear guide 61, the stabilizer 62, and the auxiliary vane 63 may be located at an upstream side of the discharge guide 70. The flow direction of the air blown from the indoor fan 34 may be guided by the rear guide 61, the stabilizer 62, and the auxiliary blade 63 for the first time, and then guided by the blade 20 and the discharge guide 70 for the second time.

The air conditioner 1 will be described with reference to fig. 6.

Fig. 6 is a view of a part of the indoor side of the air conditioner 1 obliquely. For convenience of explanation, fig. 6 shows a state in which the blades 20 are separated.

The discharge guide 70 may protrude from the front body 137 toward the discharge port 12. The discharge guides 70 may be arranged in plural at intervals in the up-down direction.

The support portion 137a and the rotation support shaft 137b may be disposed between the plurality of discharge guides 70.

The air discharged through the discharge port 12 can pass through the guide space 74. The flow direction of the air passing through the guide space 74 may be guided by the guide portion 73.

The air conditioner 1 will be described with reference to fig. 7.

Fig. 7 is a view showing a part of the indoor-side internal structure of the air conditioner 1, which is cut in the horizontal direction.

The rear guide 61 may be disposed at a downstream side of the indoor fan 34. The rear guide 61 may be disposed between the partition wall 36 and the indoor fan 34. The discharge side wall 37 may extend forward from the rear guide 61.

The rear guide 61 may include a rear guide protrusion 611. The rear guide protrusion 611 may extend in the rotation direction of the indoor fan 34. The rear guide protrusion 611 may be provided in plural at intervals in the up-down direction.

The stabilizer 62 may be disposed at a downstream side of the indoor fan 34. The stabilizer 62 may be opposite the ejection side wall 37.

The stabilizer 62 may include a first stabilizer protrusion 621. The first stabilizer protrusion 621 may protrude toward the discharge port 12. The first stabilizer protrusions 621 may be arranged in plural at intervals in the up-down direction. The first stabilizer protrusion 621 may be formed to be bent in the flow direction of the air. The first stabilizer protrusion 621 may be located further upstream side than the blade 20. The first stabilizer protrusion 621 may be located further upstream side than the discharge guide 70.

The stabilizer 62 may include a first guide wall 622. The first guide wall 622 may be opposite the ejection side wall 37. The first stabilizer protrusion 621 may protrude from the first guide wall 622. The first guide wall 622 may be located further upstream than the vane 20. The first guide wall 622 may be located upstream of the discharge guide 70. The first guide wall 622 may be opposite to the guide portion 73. The first stabilizer protrusion 621 may be opposite to the guide portion 73.

The stabilizer 62 may include a second guide wall 623. The second guide wall 623 may be bent from the first guide wall 622. The second guide wall 623 may be bent from the first guide wall 622 in a direction away from the blade 20. The second guide wall 623 may be opposite to the spit guide 70 in the flow of air. The second guide wall 623 may be located further upstream than the vane 20. The second guide wall 623 may be located upstream of the discharge guide 70. The second guide wall 623 may be opposite to the guide space 74.

The stabilizer 62 may include a third guide wall 624. The third guide wall 624 may extend forward from the second guide wall 623. The third guide wall 624 may be opposite to the blade 20. The third guide wall 624 may be located on the upstream side of the discharge guide 70. The third guide wall 624 may be combined with the front body 137.

The ejection guide 70 may be opposite to the front body 137. A guide space 74 may be formed between the discharge guide 70 and the front body 137.

The discharge port 12 may include a first discharge space 121. The first discharge space 121 may be formed between the vane 20 and the stabilizer 62. The first discharge space 121 may be formed between the vane 20 and the front body 137.

The discharge port 12 may include a second discharge space 122. The second discharge space 122 may be formed between the vane 20 and the discharge sidewall 37.

The air discharged to the discharge port 12 can flow between the vane 20 and the stabilizer 62 through the first discharge space 121. The air discharged to the discharge port 12 can flow between the vane 20 and the front body 137 through the first discharge space 121. The air discharged to the discharge port 12 can flow between the vane 20 and the discharge sidewall 37 through the second discharge space 122.

The air flowing into the first discharge space 121 may pass through the guide space 74. The flow direction of a part of the air flowing into the first discharge space 121 may be guided by the guide portion 73 in the guide space 74.

The air conditioner 1 will be described with reference to fig. 8.

Fig. 8 is a part of a cross-sectional view of the air conditioner 1 cut in the horizontal direction.

The rear guide 61 may be located further rearward than the rotation center of the indoor fan 34. The rear guide protrusion 611 may be located more rearward than the rotation center of the indoor fan 34.

The stabilizer 62 may be located more forward than the rotation center of the indoor fan 34. The stabilizer 62 may be located more forward than the rear guide 61.

The stabilizer 62 may include a fixing portion 625. The fixing portion 625 may extend from the third guide wall 624 toward the front body 137. The fixing portion 625 may stably fix the stabilizer 62 to the front body 137.

The stabilizer 62 may include an inner guide wall 626. The inner guide wall 626 may extend from the first guide wall 622 in the rotation direction of the indoor fan 34. The inner guide wall 626 may extend away from the discharge port 12. The inner guide wall 626 may form an angle with the first guide wall 622.

Stabilizer 62 may include a second stabilizer tab 627. Second stabilizer projection 627 can project from inner guide wall 626 toward indoor fan 34. Second stabilizer projection 627 can extend in a bending manner along a rotational direction of indoor fan 34.

The first stabilizer protrusion 621 may be opposite to the rear guide protrusion 611 in the front-rear direction.

The first stabilizer protrusion 621 may be opposite to the first spit space 121. The air guided by the first stabilizer protrusions 621 may flow into the first spitting space 121.

The first stabilizer protrusion 621 may be opposite to the spit guide 70. The spit guide 70 may be positioned in front of the first stabilizer protrusion 621. The air guided by the first stabilizer protrusions 621 may flow toward the spit guide 70.

The first stabilizer protrusion 621 may be located more rearward than the blade 20. The air guided by the first stabilizer protrusions 621 may flow toward the vane 20.

The blade 20 may include a second edge 25. The second edge 25 may be located inside the housing 10. The second edge 25 may be located between the ejection sidewall 37 and the third guide wall 624.

The air conditioner 1 may include a front end 139. The front end 139 may refer to a front end portion of the housing 10. The suction port 11 and the discharge port 12 may be formed to open at the distal end 139.

The first edge 23 may be located further forward than the front end 139. The projection 22 may be located further forward than the front end 139. The second edge 25 may be located further rearward than the front end 139. The discharge guide 70 may be positioned further rearward than the front end 139.

The front body 137 may include a first body wall 1371. The first body wall 1371 may be disposed parallel to the front end 139. The first body wall 1371 may form a front face of the housing 10.

The front body 137 may include a second body wall 1372. The second body wall 1372 may extend rearward from the first body wall 1371. The second body wall 1372 may extend toward the inside of the case 10. The second body wall 1372 may be located more forward than the third guide wall 624.

The first discharge space 121 may include a second guide space 75 formed between the discharge guide 70 and the vane 20. The guide space 74 may be referred to as a "first guide space". The first discharge space 121 may be divided into a first guide space 74 and a second guide space 75 based on the discharge guide 70. The air passing through the first guide space 74 and the second guide space 75 may flow toward the convex portion 22 after the joining of the vane bodies 21.

The ejection guide 70 may protrude from the second body wall 1372 toward the blade 20. The guide 73 may be opposite to the second body wall 1372.

The guide 73 may be formed convexly. The guide 73 may be formed to protrude toward the front body 137. The guide 73 may be formed to protrude toward the suction port 11.

The guide 73 may have a coanda surface 73a. The coanda surface 73a may be formed to protrude toward the suction port 11. The Coanda surface 73a may induce a Coanda Effect. The air flowing into the guide space 74 may flow toward the vane 20 along the coanda surface 73a. The coanda surface 73a may utilize the coanda effect to direct air flowing into the guide space 74 toward the vane 20.

The air guided to the blade 20 may flow along the surface of the blade body 21. The projection 22 may be formed to project from the vane body 21 toward the suction port 11. The protrusion 22 may induce a Coanda Effect. Air flowing along the blade body 21 may flow along the surface of the protrusion 22 toward the first edge 23. The bulge 22 may utilize the coanda effect to direct air flowing along the blade body 21 towards the first edge 23.

With the above-described configuration of the projection 22 and the discharge guide 70, the air flow direction is guided by the discharge guide 70 for the first time and then guided by the projection 22 for the second time, whereby the air discharged through the discharge port 12 can be prevented from flowing into the suction port 11 again.

The air conditioner 1 will be described with reference to fig. 9.

Fig. 9 is a part of a cross-sectional view of the air conditioner 1 cut in the horizontal direction. The rotation angle of the blade 20 shown in fig. 8 and the rotation angle of the blade 20 shown in fig. 9 may be different.

The air blown by the indoor fan 34 can be discharged to the outside of the casing 10 through the discharge port 12. At this time, the flow direction of the air blown by the indoor fan 34 is defined as the discharge direction (X). The ejection direction (X) may be parallel to the front-rear direction.

The first edge 23 and the projection 22 may be located further forward than the front end 139. The first edge 23 and the protrusion 22 may guide a flow direction of air discharged to the outside of the case 10.

The flow direction of the air blown by the indoor fan 34 may be guided by the first stabilizer protrusion 621 and the second stabilizer protrusion 627. Air guided by first stabilizer protrusion 621 and second stabilizer protrusion 627 may flow into first discharge space 121. The air flowing into the first discharge space 121 may flow into the first guide space 74 or the second guide space 75. The air flowing into the first guide space 74 may flow along the surface of the guide portion 73 and toward the convex portion 22 due to the coanda effect. The air flowing into the second guide space 75 may flow along the surface of the vane body 21 and merge with the air guided by the guide portion 73 on the upstream side of the convex portion 22. Air flowing along the surface 221 of the bulge 22 may flow towards the first edge 23 due to the coanda effect. The surface 221 of the protrusion 22 may direct air flowing along the surface 221 towards the first edge 23 by inducing a Coanda Effect. The air reaching the first edge 23 may be supplied to the indoor space in the front direction.

The length from the second edge 25 to the projection 22 may be defined as a first length L1. The length from the protrusion 22 to the first edge 23 may be defined as a second length L2. The first length L1 may be greater than the second length L2. That is, the length L1 from the second edge 25 to the projection 22 may be greater than the length L2 from the projection 22 to the first edge 23.

The width between the guide 73 and the front body 137 may be defined as a first width W1. The width between the ejection guide 70 and the blade 20 may be defined as a second width W2. The width of the protrusion 22 protruding may be defined as a third width W3. The first width W1 may refer to a width of the first guide space 74. The second width W2 may refer to the width of the second guide space 75.

The first width W1 may be greater than the second width W2. That is, the interval W1 between the guide 73 and the front body 137 may be greater than the interval W2 between the discharge guide 70 and the vane 20.

The second width W2 may be greater than the third width W3. That is, the interval W2 between the ejection guide 70 and the blade 20 may be greater than the height W3 by which the projection 22 projects from the blade body 21.

By the relationship between the length and the width, the Coanda Effect (Coanda Effect) by the vane 20 and the discharge guide 70 can be maximized, and the flow direction of the air discharged through the discharge port 12 can be guided forward. This can prevent the air discharged through the discharge port 12 from flowing into the suction port 11 again.

The air conditioner 1 will be described with reference to fig. 10.

Fig. 10 is an enlarged and illustrated view of the vane 20 and the discharge guide 70.

The vane 20 may be supported by a support portion 137a (refer to fig. 5) protruding from the front body 137 and a rotation support shaft 137 b. The boss 24 of the blade 20 can rotate about the rotation support shaft 137 b. The boss 24 and the rotation support shaft 137b can relatively rotate.

The ejection guide 70 may protrude from the front body 137 toward the blade 20. The extension portion 71 and the bending portion 72 may connect the guide portion 73 to the front body 137.

The air discharged through the discharge port 12 can flow along the surface of the vane body 21 via the first guide space 74 and the second guide space 75.

The blade 20 will be described with reference to fig. 11.

The blade 20 may include a guide surface 201. The guide surface 201 may be a side surface of the blade body 21. The air discharged through the discharge port 12 can flow along the guide surface 201. The protrusion 22 may protrude from the guide surface 201.

The guide surface 201 may comprise a first guide surface 202. The first guide surface 202 may be a flat surface.

The guide surface 201 may comprise a second guide surface 203. The second guide surface 203 may be a curved surface. The second guide surface 203 may include a surface 221 of the protrusion 22 (refer to fig. 9).

The first guide surface 202 and the second guide surface 203 may form a continuous surface. The first guide surface 202 and the second guide surface 203 may be integral.

The protrusion 22 may protrude from the second guide surface 203. The tab 24 may protrude from the first guide surface 202. The boss 24 may have a through hole 241 through which the rotation support shaft 137b passes.

The effect of the air conditioner 1 according to the embodiment of the present invention will be described with reference to fig. 12 and 13.

Fig. 12 is a diagram showing the structure of the air conditioner 1 of the present invention having the projection 22 and the discharge guide 70. Fig. 13 is a contour diagram for explaining the flow of air discharged from the air conditioner 1 of fig. 12. The description of the air conditioner 1 may be similarly made with reference to fig. 1 to 11.

The air conditioner 1 having the protrusion 22 and the discharge guide 70 can prevent the air discharged through the discharge port 12 from flowing into the suction port 11 again. The air flowing along the blades 20 may flow forward in the outer region P of the housing 10. That is, the air guided by the projection 22 and the discharge guide 70 in the flow direction has straight advancement in the Q direction.

The effect of the air conditioner 1' according to the comparative example of the present invention will be described with reference to fig. 14 and 15.

Unlike fig. 1 to 13, fig. 14 is a diagram showing a structure of an air conditioner 1' without a projection and a discharge guide. Fig. 15 is a contour diagram for explaining the flow of air discharged from the air conditioner 1' of fig. 14. In the description of the air conditioner 1', the description with reference to fig. 1 to 11 may be used similarly, except for the description of the protruding portion and the discharge guide.

In the air conditioner 1 'having only the flat-shaped blades 20', the air discharged through the discharge port flows into the suction port again. The air flowing along the vane 20 'may flow toward the suction port at the outer region P' of the housing 10. That is, the air flowing along the vane 20 'can flow in the Q' direction and flow into the suction port again. Therefore, the air blowing efficiency into the indoor space is lowered, and the cooling and heating performance of the air conditioner is lowered. In addition, since the cooled or heated air flows into the inside of the case again, the heat exchange efficiency of the heat exchanger is lowered. In addition, the air conditioner 1' generates a vortex R ' by the re-suction flow flowing in the Q ' direction. The vortex R 'generated near the suction port and the discharge port causes noise of the air conditioner 1' and reduces the air blowing performance.

While the preferred embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications without departing from the technical spirit of the present invention as claimed in the claims, and such modifications should be individually understood without departing from the technical spirit or the scope of the present invention.

The present invention can be modified and implemented in various forms, and thus the scope of protection is not limited by the above embodiments. Accordingly, modified embodiments include the constitution in the claims of the present invention and should be regarded as falling within the scope of the present invention.

Any embodiments or other embodiments of the specification described above are not necessarily exclusive or distinguishing between each other. The individual structural elements or functions of any of the embodiments or other embodiments of the invention described above may be combined or combined.

For example, this means that the a structures illustrated in a particular embodiment and/or figure may be combined with the B structures illustrated in other embodiments and/or figures. That is, even if the combination between structures is not directly described, unless the combination is not explicitly stated, it means that the combination is possible.

The foregoing detailed description is not to be construed as limiting in all aspects, but rather as exemplary. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all change which comes within the equivalent scope of the invention should be included in the scope of the invention.

Claims

1. An air conditioner, comprising:

a housing provided with a front plate formed with a suction port and a discharge port;

a fan disposed inside the housing;

a discharge guide disposed at the discharge port and provided with a guide portion having a surface bent in a discharge direction of air; and

the blade is rotatably disposed at the discharge port, and has a protruding portion on a downstream side of the discharge guide, the protruding portion having a surface bent in the discharge direction.

2. The air conditioner according to claim 1, wherein,

the housing is disposed in a window, and the discharge guide and the blade are positioned on the indoor side with respect to the window.

3. The air conditioner according to claim 2, wherein,

the suction port and the discharge port are located on the indoor side with respect to the window.

4. The air conditioner according to claim 1, wherein,

The suction port and the discharge port extend in the up-down direction and are spaced apart from each other on the same plane of the front plate.

5. The air conditioner according to claim 1, wherein,

and a grid combined with the front plate and arranged at the suction inlet,

the grid and the spit guide are spaced apart from each other along a front aspect of the housing.

6. The air conditioner according to claim 1, wherein,

also comprises a front main body, wherein the front main body is provided with a front cover,

the front body is coupled to the front plate, and is disposed between the suction port and the discharge port, and divides the suction port and the discharge port.

7. The air conditioner according to claim 1, wherein,

the spit guide includes:

an extension protruding toward the blade;

a bending part which bends from the extending part in the up-down direction; and

the guide portion is opposed to the blade.

8. The air conditioner according to claim 1, wherein,

further comprises:

a front body disposed between the suction port and the discharge port; and

and a first guide space formed between the bent surface of the guide portion and the front body.

9. The air conditioner according to claim 8, wherein,

further comprising a second guide space formed between the spit guide and the vane,

The width of the first guide space is larger than the width of the second guide space.

10. The air conditioner according to claim 1, wherein,

the interval between the discharge guide and the vane is greater than the height of the protrusion.