CN113614465A

CN113614465A - Indoor unit of air conditioner

Info

Publication number: CN113614465A
Application number: CN202080023665.8A
Authority: CN
Inventors: 山下哲也; 金野悟; 藤冈文人
Original assignee: Daikin Industries Ltd
Current assignee: Daikin Industries Ltd
Priority date: 2019-04-05
Filing date: 2020-03-30
Publication date: 2021-11-05
Also published as: SG11202110834YA; JPWO2020203987A1; JP7048919B2; AU2020251545A1; WO2020203987A1

Abstract

An indoor unit (1) is provided with: at least 1 blower (20A); a heat exchanger (50) configured to surround the blower (20A) from 4 directions, i.e., front, rear, left, and right; and a casing (10) that houses the blower (20A) and the heat exchanger (50). The housing (10) has a suction port (11); blow-out ports (12, 13); a mounting portion (10e) provided on a side surface of the housing (10) and used for mounting the housing (10) on a wall surface (Wa); and a storage section (18) which is disposed on the mounting section (10e) side of the heat exchanger (50) and which stores at least a pipe (55) connected to the heat exchanger (50), wherein the blower (20A), the heat exchanger (50), the mounting section (10e), and the storage section (18) are arranged side by side in the order of the blower (20A), the heat exchanger (50), the storage section (18), and the mounting section (10e) when viewed from the side.

Description

Indoor unit of air conditioner

Technical Field

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

Background

As an indoor unit of a conventional air conditioner, there is an indoor unit including a turbo fan that sucks indoor air from below and discharges the air in a lateral direction, and a heat exchanger provided along a corner portion and both side surfaces from a front surface of a casing (see patent document 1). Patent document 1 describes a mode in which an indoor unit of an air conditioner is installed at a corner portion formed by a ceiling and a side wall of a room.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 3141867

Disclosure of Invention

Problems to be solved by the invention

In the indoor unit of the conventional air conditioner, depending on the connection position between the heat exchanger and the refrigerant pipe, it may be difficult to draw the refrigerant pipe to the outside of the casing. As a result, workability of an installation process when the indoor unit is installed at a corner portion formed by the ceiling and the side wall of the room may be reduced. However, patent document 1 does not describe workability of an installation process when the indoor unit is installed at a corner portion formed by a ceiling and a side wall of a room.

The invention provides an indoor unit of an air conditioner, which can improve the operation performance of installation engineering.

Means for solving the problems

An indoor unit of an air conditioner according to the present invention is characterized in that the indoor unit of an air conditioner includes: at least 1 blower; a heat exchanger configured to surround the blower from 4 directions of front, rear, left, and right; and a casing that houses the blower and the heat exchanger, the casing including: a suction inlet; an air outlet; a mounting portion provided on a side surface of the housing for mounting the housing on a wall surface; and a storage section that is disposed on the mounting section side of the heat exchanger and that stores at least piping connected to the heat exchanger, wherein the blower, the heat exchanger, the mounting section, and the storage section are disposed side by side in the order of the blower, the heat exchanger, the storage section, and the mounting section when viewed from the side.

According to the present invention, since the storage unit for storing the pipe is disposed on the installation unit side of the heat exchanger, the pipe can be easily drawn out from the casing when the indoor unit of the air conditioner is installed on the wall surface, and the pipe can be easily constructed. As a result, workability of a mounting process of the indoor unit of the air conditioner to the wall surface can be improved.

An indoor unit of an air conditioner according to one embodiment includes a heat insulating material disposed between the heat exchanger and the housing.

According to the above embodiment, since the heat insulating material is disposed between the heat exchanger and the housing portion, heat exchange between the heat exchanger and the housing portion is suppressed, and condensation on the housing portion is suppressed. This can suppress the dripping of dew condensation water from the outside of the apparatus.

An indoor unit of an air conditioner according to one embodiment includes a plurality of the above-described air blowers, the plurality of the above-described air blowers are arranged side by side, and the storage section extends in a direction in which the plurality of the above-described air blowers are arranged side by side.

In an indoor unit of an air conditioner according to an embodiment, the casing has a corner portion on the side of the mounting portion, and the corner portion has at least 1 connection port through which the pipe is inserted.

In an indoor unit of an air conditioner according to an embodiment, the air outlet includes a 1 st air outlet provided on the bottom surface of the casing on the side of the attachment portion.

In the indoor unit of an air conditioner according to one embodiment, the 1 st air outlet is provided on the opposite side of the installation portion with respect to the storage portion in a bottom view.

According to the above embodiment, the 1 st air outlet and the mounting portion are arranged with the storage portion therebetween in a bottom view, and therefore the 1 st air outlet is provided separately from the wall surface. As a result, the air blown out from the 1 st air outlet can be prevented from hitting the wall surface and causing contamination of the wall surface with dust and the like entrained in the blown air.

An indoor unit of an air conditioner according to one embodiment includes a suction port provided on a bottom surface of the casing and on a side opposite to the mounting portion with respect to the 1 st air outlet, and the 1 st air outlet blows air obliquely downward toward the wall surface side.

According to the above embodiment, since the 1 st air outlet blows air obliquely downward toward the wall surface side, the air blown out from the 1 st air outlet flows obliquely downward toward the side opposite to the air inlet. As a result, a short circuit in which the air blown out from the 1 st air outlet is sucked into the suction port can be suppressed.

In an indoor unit of an air conditioner according to an embodiment, the casing has an air passage for guiding air from the blower to the 1 st outlet, and the air passage has a portion formed to be separated from the mounting portion.

In the above embodiment, the air passage that guides the air from the blower to the 1 st air outlet has a portion formed so as to be separated from the mounting portion, and therefore, the 1 st air outlet is provided separately from the wall surface. As a result, it is possible to prevent the air blown out from the 1 st air outlet from hitting the wall surface and causing dust and the like in the blown air to adhere to the wall surface and contaminate the wall surface.

In an indoor unit of an air conditioner according to an embodiment, the storage unit is disposed on the installation unit side of the ventilation path.

In an indoor unit of an air conditioner according to an embodiment, the air outlets include at least 1 second air outlet 2 provided in a side surface of the casing.

According to the above embodiment, since air is blown out from the 1 st air outlet provided in the bottom surface of the casing and the 2 nd air outlet provided in the side surface of the casing, the air conditioned by the heat exchanger is easily distributed over the entire indoor space, and thus, the comfort of the user can be improved.

In an indoor unit of an air conditioner according to an embodiment, the blower is provided such that a rotation axis of the blower extends in an up-down direction.

Drawings

Fig. 1 is a perspective view of an indoor unit of an air conditioner according to embodiment 1 of the present invention, as viewed from obliquely right below.

Fig. 2 is a perspective view of the indoor unit of the air conditioner according to embodiment 1, as viewed from diagonally left and rear and downward.

Fig. 3 is a bottom view of the indoor unit of the air conditioner according to embodiment 1 with the lower grill removed.

Fig. 4 is a bottom view of the indoor unit of the air conditioner according to embodiment 1 with the bell mouth, drain pan, drain pipe, and the like removed.

Fig. 5 is a sectional view taken along line V-V of fig. 3.

Fig. 6 is a schematic diagram for explaining the blowing direction of the air conditioner according to embodiment 1.

Fig. 7 is a cross-sectional view similar to fig. 5 of an indoor unit of an air conditioner according to a modification of embodiment 1.

Fig. 8 is a cross-sectional view similar to fig. 5 of an indoor unit of an air conditioner according to embodiment 2 of the present invention.

Fig. 9 is a cross-sectional view similar to fig. 5 of an indoor unit of an air conditioner according to embodiment 3 of the present invention.

Fig. 10 is a bottom view similar to fig. 4 of an indoor unit of an air conditioner according to embodiment 4 of the present invention.

Detailed Description

An indoor unit 1 of an air conditioner according to an embodiment of the present invention will be described below with reference to the drawings.

[ embodiment 1 ]

Fig. 1 is a perspective view of an indoor unit 1 of an air conditioner according to embodiment 1, as viewed from obliquely right below. Fig. 2 is a perspective view of the indoor unit 1 of the air conditioner according to embodiment 1, as viewed from diagonally left and rear.

Referring to fig. 1, an indoor unit 1 of an air conditioner according to the present embodiment includes a casing 10 having a substantially rectangular parallelepiped shape. The housing 10 includes a bottom surface grill 10a constituting a bottom surface of the housing 10, a front surface grill 10b constituting a front surface of the housing 10, a right side surface grill 10c constituting a right side surface of the housing 10, and a left side surface grill 10d constituting a left side surface of the housing 10. In the present embodiment, the bottom surface grill 10a, the front surface grill 10b, the right side surface grill 10c, and the left side surface grill 10d are integrally formed. Further, as shown in fig. 2, the housing 10 has a back panel 10e constituting the back surface of the housing 10 and a top panel 10f constituting the top surface of the housing 10. The back panel 10e and the top panel 10f are integrally formed. The bottom surface grill 10a, the front surface grill 10b, the right side surface grill 10c, the left side surface grill 10d, the back surface panel 10e, and the top surface panel 10f are each substantially rectangular. The side surfaces of the housing 10 of the present invention include the front surface, the left and right side surfaces, and the back surface of the housing 10. In other words, the side surface of the housing 10 is constituted by the front grille 10b, the right side grille 10c, the left side grille 10d, and the rear panel 10 e.

Referring to fig. 1 and 2, the bottom grill 10a includes an intake port 11 for taking indoor air into the casing 10, and a bottom outlet port 12 for blowing air from the inside of the casing 10 into the room. In other words, the casing 10 of the present embodiment has the suction port 11 provided on the bottom surface of the casing 10 and the bottom surface blow-out port 12 provided on the bottom surface of the casing 10. The bottom surface air outlet 12 of the present embodiment is provided on the back surface panel 10e side of the bottom surface grill 10a of the casing 10 in a bottom view. Specifically, the bottom surface air outlet 12 is provided to extend along the long side of the bottom surface grill 10a of the casing 10 on the back surface panel 10e side. The bottom face air outlet 12 of the present embodiment is an example of the 1 st air outlet of the present invention.

The front grill 10b has a front air outlet 13 for blowing air from the inside of the casing 10 into the room. The front face outlet 13 of the present embodiment is an example of the 2 nd outlet of the present invention.

The right side grill 10c has a right side blow-out port 14 for blowing out air from the inside of the casing 10 into the room. Similarly, the left grille 10d has a left outlet 15 for blowing air from the inside of the housing 10 into the room. The right side outlet 14 provided in the right side grill 10c and the left side outlet 15 provided in the left side grill 10d have the same configuration. The right side outlet 14 provided in the right side grill 10c and the left side outlet 15 provided in the left side grill 10d are examples of the 2 nd outlet of the present invention.

The rear panel 10e is attached to the wall surface Wa via an attachment plate (not shown) fixed to the wall surface Wa. The back panel 10e of the present embodiment is an example of the mounting portion of the present invention.

The bottom grill 10a has 2

bottom connection ports

16A and 16B through which the refrigerant pipe 55 (shown in fig. 3) and the drain pipe 44 (shown in fig. 3) are inserted. The bottom

surface connection ports

16A and 16B are so-called ejector holes having an opening and a lid covering the opening. The

bottom connection ports

16A and 16B are provided at both ends of the long side of the bottom grill 10a on the back panel 10e side. Specifically, the bottom connection opening 16A is provided on the right side grille 10c side and the back panel 10e side of the bottom grille 10 a. The bottom connection opening 16B is provided on the left side grille 10d side of the bottom grille 10a and on the back panel 10e side. The

bottom connection ports

16A and 16B of the present embodiment are examples of the connection ports of the present invention.

When the indoor unit 1 is mounted, the lid portion of the bottom surface connection port 16A is removed, the opening portion of the bottom surface connection port 16A is exposed, and the refrigerant pipe 55 (shown in fig. 3) and the drain pipe 44 (shown in fig. 3) can be inserted through the casing 10 in the vertical direction.

When the indoor unit 1 is mounted, the lid portion of the bottom surface connection port 16B is removed, whereby the opening portion of the bottom surface connection port 16B is exposed, and an external refrigerant pipe (not shown) connected to the refrigerant pipe 55 (shown in fig. 3) can be inserted through the casing 10 in the vertical direction. In addition, when the indoor unit 1 is installed, the lid portion of the bottom connection port 16B is removed, so that the opening portion of the bottom connection port 16B is exposed, and an external drain pipe (not shown) connected to the drain pipe 44 (shown in fig. 3) can be inserted through the casing 10 in the vertical direction.

The right side grill 10c has a side connection port 17A through which the refrigerant pipe 55 (shown in fig. 3) and the drain pipe 44 (shown in fig. 3) are inserted. The left side grill 10d has a side connection port 17B through which the refrigerant pipe 55 and the drain pipe 44 are inserted. The

side connection ports

17A and 17B are so-called ejection holes having an opening and a lid covering the opening. The side connection port 17A is provided on the bottom surface grill 10a side and the back surface panel 10e side of the right side grill 10 c. The side connection port 17B is provided on the bottom surface grill 10a side of the left side grill 10d and on the back surface panel 10e side. The

side connection ports

17A and 17B of the present embodiment are examples of the connection ports of the present invention.

When the indoor unit 1 is mounted, the opening of the side connection port 17A is exposed by removing the cover of the side connection port 17A, and the refrigerant pipe 55 (shown in fig. 3) and the drain pipe 44 (shown in fig. 3) can be inserted through the casing 10 in the left-right direction.

When the indoor unit 1 is mounted, the lid portion of the side connection port 17B is removed, the opening portion of the side connection port 17B is exposed, and an external refrigerant pipe (not shown) connected to the refrigerant pipe 55 (shown in fig. 3) can be inserted through the casing 10 in the left-right direction. When the indoor unit 1 is mounted, the lid portion of the side connection port 17B is removed, so that the opening of the side connection port 17B is exposed, and an external drain pipe (not shown) connected to the drain pipe 44 (shown in fig. 3) can be inserted through the casing 10 in the left-right direction.

The housing 10 of the present embodiment has a corner C1 formed by the bottom surface grill 10a, the right side surface grill 10C, and the back surface panel 10 e. The corner C1 of the housing 10 includes a bottom connection port 16A and a side connection port 17A. The housing 10 has a corner C2 formed by the bottom grill 10a, the left side grill 10d, and the back panel 10 e. The corner C2 of the housing 10 includes a bottom connection port 16B and a side connection port 17B.

Fig. 3 is a bottom view of the indoor unit 1 of the air conditioner according to embodiment 1 with the bottom grill 10a removed. In fig. 3, the same components as those in fig. 1 and 2 are denoted by the same reference numerals.

Referring to fig. 3, the indoor unit 1 of the present embodiment includes 2 air-sending

devices

20A and 20B. In a bottom view, the 2

blowers

20A and 20B are disposed at positions overlapping the suction port 11. The 2

blowers

20A and 20B are arranged side by side. Specifically, the 2

blowers

20A and 20B are arranged along the wall surface Wa. In other words, in a bottom view, the 2

fans

20A and 20B are arranged side by side along the direction in which the rear panel 10e extends. The

blowers

20A and 20B of the present embodiment are turbo fans. The

air blowers

20A and 20B are respectively rotationally driven around the rotation axis R, suck air along the rotation axis R, and blow out air in a direction intersecting the rotation axis R. The

blowers

20A and 20B are not limited to turbo fans, and may be centrifugal fans having other configurations or axial fans such as propeller fans.

A bell mouth 30 for introducing air into the 2

blowers

20A, 20B and a drain pan 40 for receiving dew condensation water generated in a heat exchanger 50 (shown in fig. 4) are provided inside the casing 10 of the indoor unit 1.

The drain pan 40 includes a drain pan main body 41 for receiving dew condensation water generated in the heat exchanger 50 (shown in fig. 4), and a guide portion 43 forming an air passage 42 for guiding air blown out from the

air blowers

20A, 20B to the bottom surface air outlet 12. The drain pan 40 is constructed of a thermally insulating material. The guide portion 43 is formed such that the air flow passage 42 overlaps the bottom face air outlet 12 in a bottom view. Further, a drain pipe 44 for discharging the liquid retained in the drain pan main body 41 to the outside of the casing 10 of the indoor unit 1 is connected to the drain pan 40. The connection portion between the drain pan body 41 and the drain pipe 44 is disposed on the right side surface grill 10c side of the housing 10. In other words, the connection portion between the drain pan main body 41 and the drain pipe 44 is provided in the vicinity of the corner C1 (shown in fig. 1). The drain pipe 44 of the present embodiment is an example of the piping of the present invention.

Referring to fig. 3, the housing 10 has a housing 18 for housing the refrigerant pipe 55 and the drain pipe 44. The housing 18 extends along the wall surface Wa. In other words, the housing section 18 extends along the direction in which the rear panel 10e extends (the left-right direction in fig. 3) when viewed from below. In other words, the housing 18 extends in a direction in which the 2

air blowers

20A, 20B are arranged. The housing 18 extends between a corner C1 where the bottom connection port 16A and the side connection port 17A are provided and a corner C2 where the bottom connection port 16B and the side connection port 17B are provided.

The housing portion 18 of the present embodiment is a space provided inside the housing 10, and is defined by the bottom surface grill 10a (shown in fig. 1), the rear surface panel 10e, and the guide portion 43 of the drain pan 40. In addition, the storage section 18, the bottom surface air outlet 12, and the air inlet 11 of the present embodiment are arranged in this order from the rear panel 10e side toward the front grille 10b side as viewed from below. In other words, the bottom face air outlet 12 of the present embodiment is provided on the opposite side of the rear face panel 10e with respect to the storage section 18 in a bottom view.

Fig. 4 is a bottom view of the indoor unit 1 of the air conditioner according to embodiment 1, with the bottom grill 10a, the drain pan 40, and the drain pipe 44 removed. In fig. 4, the same components as those in fig. 1 to 3 are denoted by the same reference numerals.

Referring to fig. 4, the indoor unit 1 of the air conditioner includes a heat exchanger 50, and the heat exchanger 50 is configured to surround 2

fans

20A and 20B from 4 directions, i.e., front, rear, left, and right. Specifically, the heat exchanger 50 includes a 1 st heat exchange portion 51 extending in the front-rear direction and disposed between the blower 20A and the right grille 10c, and a 2 nd heat exchange portion 52 extending in the left-right direction and disposed between the 2

blowers

20A, 20B and the front grille 10B. The heat exchanger 50 includes a 3 rd heat exchange portion 53 extending in the front-rear direction and disposed between the blower 20B and the left grille 10d, and a 4 th heat exchange portion 54 extending in the left-right direction and disposed between the 2

blowers

20A, 20B and the rear panel 10 e. The 1 st heat exchange portion 51, the 2 nd heat exchange portion 52, the 3 rd heat exchange portion 53, and the 4 th heat exchange portion 54 of the heat exchanger 50 of the present embodiment are integrally provided.

The 2 nd heat exchange portion 52 is provided to be connected to the 1 st heat exchange portion 51 at an end of one side (right side in fig. 4) and is provided to be connected to the 3 rd heat exchange portion 53 at an end of the other side (left side in fig. 4).

The 4 th heat exchange portion 54 is provided so as to be connected to the refrigerant pipe 55 at an end portion of one side (right side in fig. 4), and is provided so as to be connected to the 3 rd heat exchange portion 53 at an end portion of the other side (left side in fig. 4). The connection portion between the heat exchanger 50 and the refrigerant pipe 55 is disposed on the right side grill 10c side of the casing 10. In other words, the connection portion between the heat exchanger 50 and the refrigerant pipe 55 is provided in the vicinity of the corner C1 (shown in fig. 1) of the casing 10.

The refrigerant pipe 55 includes a pipe 55a and a pipe 55 b. The refrigerant pipe 55 of the present embodiment is covered with a pipe distribution cover 56 made of a heat insulating material. The refrigerant pipe 55 of the present embodiment is an example of the pipe of the present invention.

Fig. 5 is a sectional view taken along line V-V of fig. 3. In fig. 5, the same components as those in fig. 1 to 4 are denoted by the same reference numerals as those in fig. 1 to 4.

Referring to fig. 5, the ventilation path 42 has a bent portion 42a formed to be separated from the back panel 10 e. Specifically, the curved portion 42a of the air passage 42 of the present embodiment extends so as to be apart from the rear panel 10e from the upstream (upper side in the drawing) toward the downstream (lower side in fig. 5). The guide portion 43 of the drain pan 40 has a shape along the shape of the ventilation passage 42. In other words, the guide portion 43 has the bent portion 43a formed separately from the back panel 10 e. Specifically, the bent portion 43a of the guide portion 43 of the drain pan 40 of the present embodiment extends so as to be spaced apart from the rear surface panel 10e from one side (upper side in fig. 5) to the other side (lower side in fig. 5). The guide portion 43 of the drain pan 40 of the present embodiment is an example of the heat insulating material of the present invention.

As described above, the housing portion 18 of the housing 10 is defined by the bottom surface grill 10a, the rear surface panel 10e, and the guide portion 43 of the drain pan 40. The receiving portion 18 of the housing 10 is formed to be wider from one side (upper side of fig. 5) toward the other side (lower side of fig. 5) due to the shape of the bent portion 43a of the guide portion 43 of the drain pan 40. In other words, the space for accommodating the refrigerant pipe 55 and the drain pipe 44 is increased in accordance with the shape of the guide portion 43 of the drain pan 40.

The housing 18 is disposed on the back panel 10e side of the heat exchanger 50. Specifically, the housing 18 is disposed at a position closer to the back panel 10e than the 4 th heat exchange portion 54 of the heat exchanger 50.

The guide portion 43 has a rear surface side portion 43b that partitions the ventilation passage 42 and the housing 18. The rear surface side portion 43b of the guide portion 43 suppresses heat exchange between the air passing through the ventilation passage 42 and the container 18.

The

blowers

20A, 20B are provided such that the rotation axes R of the

blowers

20A, 20B extend in the vertical direction.

(flow of air)

Next, referring to fig. 6, a schematic diagram for explaining the flow of air blown out from the indoor unit 1 of the air conditioner according to the present embodiment is shown. Fig. 6 shows an example of an installation mode of the indoor unit 1 of the air conditioner, and the indoor unit 1 of the present embodiment is installed on a wall surface Wa above a window Wi. Referring to fig. 4, 5, and 6, the indoor unit 1 of the present embodiment blows air conditioned by the heat exchanger 50 in 4 directions, i.e., the front of the casing 10, the sides of the casing 10, and the lower side of the casing 10.

Referring to fig. 4, 5, and 6, the indoor unit 1 blows air conditioned by the heat exchanger 50 from the front air outlet 13 of the front grill 10b toward the front of the casing 10. The indoor unit 1 blows out conditioned air toward the left side of the casing 10 from the left side outlet 15 of the left side grill 10 d. The indoor unit 1 blows air conditioned by the heat exchanger 50 toward the right side of the casing 10 from the right side outlet 14 of the right side grill 10 c. The indoor unit 1 blows air conditioned by the heat exchanger 50 from the bottom surface air outlet 12 of the bottom surface grill 10a toward the lower side of the casing 10.

Referring to fig. 4, a part of the air blown out by the

blowers

20A, 20B in the centrifugal direction of the

blowers

20A, 20B passes through the 1 st heat exchange portion 51 of the heat exchanger 50, and is blown out into the room from the right side outlet 14 of the right side grill 10 c. In other words, the indoor unit 1 blows out the air conditioned by the 1 st heat exchange portion 51 of the heat exchanger 50 from the right side outlet 14 of the right side grill 10c toward the side of the casing 10 (see reference numeral a in fig. 4 and 6).

A part of the air blown out by the

fans

20A, 20B in the centrifugal direction of the

fans

20A, 20B passes through the 2 nd heat exchange portion 52 of the heat exchanger 50, and is blown out into the room from the front face air outlet 13 of the front grille 10B. In other words, the indoor unit 1 blows out the air conditioned by the 2 nd heat exchange portion 52 of the heat exchanger 50 from the front blowout port 13 (shown in fig. 1) of the front grill 10B toward the front of the casing 10 (see reference numeral B in fig. 4, 5, and 6).

A part of the air blown out by the

blowers

20A, 20B in the centrifugal direction of the

blowers

20A, 20B passes through the 3 rd heat exchange portion 53 of the heat exchanger 50 and is blown out into the room from the left side outlet 15 of the left side grill 10 d. In other words, the indoor unit 1 blows out the air conditioned by the 3 rd heat exchange portion 53 of the heat exchanger 50 from the left side outlet 15 of the left grill 10d toward the side of the casing 10 (see reference numeral C in fig. 4 and 6).

Referring to fig. 5, a part of the air blown out by the

blowers

20A, 20B in the centrifugal direction of the

blowers

20A, 20B passes through the 4 th heat exchange portion 54 of the heat exchanger 50, is guided to the air passage 42, and is blown out into the room from the bottom surface air outlet 12 of the bottom surface grill 10A. In other words, the indoor unit 1 blows out the air conditioned by the 4 th heat exchange portion 54 of the heat exchanger 50 from the bottom surface air outlet 12 of the bottom surface grill 10a toward the lower side of the casing 10 (see reference numeral D in fig. 5 and 6). The air blown out from the bottom surface air outlet 12 into the room is drawn to the wall surface Wa by the coanda effect and flows along the wall surface Wa.

According to the above embodiment, since the storage unit 18 for storing the piping such as the refrigerant piping 55 and the drain pipe 44 is disposed at the position closer to the back panel 10e than the heat exchanger 50, the piping is easily drawn out from the casing 10 when the indoor unit 1 of the air conditioner is attached to the wall surface Wa. As a result, the piping work is facilitated, and the workability of the installation work of the indoor unit 1 of the air conditioner to the wall surface Wa can be improved.

In the above embodiment, the casing 10 has the

bottom connection ports

16A and 16B and the

side connection ports

17A and 17B for inserting pipes such as the refrigerant pipe 55 and the drain pipe 44 at the two corners C1 and C2 of the casing 10. The construction of the piping is facilitated by appropriately selecting a connection port through which the piping is to be inserted from among the

bottom connection ports

16A, 16B and the

side connection ports

17A, 17B, depending on the installation position of the indoor unit 1 and the position of the piping hole (not shown) provided in the wall surface Wa. As a result, the workability of the installation process of the indoor unit 1 of the air conditioner to the wall surface can be improved.

In the above embodiment, the connection portion between the heat exchanger 50 and the refrigerant pipe 55 and the connection portion between the drain pan main body 41 and the drain pipe 44 are disposed in the vicinity of the corner portion C1 of the casing 10. Therefore, when an external pipe connected to a pipe such as the refrigerant pipe 55 or the drain pipe 44 is inserted through the bottom connection port 16B or the side connection port 17B provided in the corner C2, the pipe needs to be pulled back. According to the above embodiment, since the housing portion 18 extends between the corner C1 and the corner C2 of the casing 10, the pipe such as the refrigerant pipe 55 or the drain pipe 44 and the external pipe connected to the pipe are pulled back to the housing portion 18 provided in the casing 10. This eliminates the need to draw back piping such as the refrigerant piping 55 and the drain pipe 44 to the outside of the casing 10, and improves the appearance.

According to the above embodiment, since the guide portion 43 made of the heat insulating material is disposed between the heat exchanger 50 and the housing portion 18, heat exchange between the heat exchanger 50 and the housing portion 18 is suppressed, and condensation on the housing portion 18 is suppressed. This can suppress the dripping of dew condensation water from the outside of the apparatus.

According to the above embodiment, the rear surface side portion 43b of the guide portion 43 made of the heat insulating material is disposed between the ventilation passage 42 and the housing portion 18, so that heat exchange between the air passing through the ventilation passage 42 and the housing portion 18 is suppressed, and condensation on the housing portion 18 is suppressed. This can suppress the dripping of dew condensation water from the outside of the apparatus.

According to the above embodiment, since the bottom face air outlet 12 and the back panel 10e are disposed with the storage section 18 interposed therebetween in a bottom view, the bottom face air outlet 12 is provided apart from the wall surface Wa. As a result, it is possible to prevent the wall surface Wa from being contaminated by dust and the like entrained in the blown air, which is caused by the air blown out from the bottom surface air outlet 12 hitting the wall surface Wa.

In the above embodiment, the air passage 42 that guides the air from the

air blowers

20A, 20B to the bottom surface air outlet 12 has the curved portion 42a formed so as to be separated from the back surface panel 10e, and therefore the bottom surface air outlet 12 is provided so as to be separated from the wall surface Wa. As a result, it is possible to prevent the wall surface Wa from being contaminated by dust and the like entrained in the blown air, which is caused by the air blown out from the bottom surface air outlet 12 hitting the wall surface Wa.

In the above-described embodiment, the indoor unit 1 of the air conditioner blows air from the bottom surface air outlet 12 provided in the bottom surface of the casing 10, the front surface air outlet 13 provided in the side surface of the casing 10, the right side surface air outlet 14, and the left side surface air outlet 15, respectively. This makes it easier for the air conditioned by the heat exchanger 50 to spread throughout the entire indoor area, thereby improving the comfort of the user.

[ modified examples ]

Fig. 7 is a cross-sectional view similar to fig. 5 of an indoor unit 101 of an air conditioner according to a modification of the present embodiment.

Referring to fig. 7, in the indoor unit 101 according to the modification, the drain pan body 141 of the drain pan 140 and the guide portion 160 are formed separately. In the present modification, the ventilation passage 161 is defined by the drain pan main body 141 of the drain pan 140 and the guide portion 160 formed separately from the drain pan main body 141. The guide 160 of the present modification is an example of the heat insulating material of the present invention.

[ 2 nd embodiment ]

The indoor unit 201 of the air conditioner according to embodiment 2 has the same structure as the indoor unit 1 of the air conditioner according to embodiment 1 except for the structure of the bottom grill 10a, and fig. 3 and 4 are referred to. In embodiment 2, the same components as those in embodiment 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

Fig. 8 is a cross-sectional view similar to fig. 5 of an indoor unit 201 of an air conditioner according to embodiment 2 of the present invention.

Referring to fig. 8, bottom grill 10a of casing 10 of the present embodiment includes baffle 270 for changing the direction of air from bottom outlet 12.

The baffle 270 of the present embodiment is provided so that the air conditioned by the heat exchanger 50 is blown out obliquely downward from the bottom surface air outlet 12 toward the wall surface Wa side. In other words, the bottom air outlet 12 of the present embodiment blows air obliquely downward toward the wall surface Wa. Specifically, the baffle 270 is provided so as to extend from the upstream side toward the downstream side of the bottom face air outlet 12 toward the wall surface Wa side. In the present embodiment, the angle θ 1 formed by the plane D1 parallel to the wall surface Wa and the plane D2 parallel to the baffle 270 is 30 degrees.

In embodiment 2, the same operational effects as those in embodiment 1 are exhibited.

According to the above embodiment, the bottom surface air outlet 12 blows air obliquely downward toward the wall surface Wa side, and therefore, the air blown out from the bottom surface air outlet 12 flows obliquely downward toward the side opposite to the air inlet 11. As a result, a short circuit in which air blown out from the bottom surface air outlet 12 is sucked into the air inlet 11 can be suppressed.

The flap 270 may be rotatably attached to the housing 10 so that an angle θ 1 formed by a plane D1 parallel to the wall surface Wa and a plane D2 parallel to the flap 270 can be changed.

In the present embodiment, the bottom surface grill 10a has 1 baffle 270, but the bottom surface grill 10a may have a plurality of baffles 270.

[ embodiment 3 ]

The indoor unit 301 of the air conditioner according to embodiment 3 has the same configuration as the indoor unit 1 of the air conditioner according to embodiment 1, except for the configuration of the ventilation passage 342, and fig. 3 and 4 are referred to. In embodiment 3, the same components as those in embodiment 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

Fig. 9 is a cross-sectional view similar to fig. 5 of an indoor unit 301 of an air conditioner according to embodiment 3 of the present invention.

Referring to fig. 9, the drain pan 340 of the present embodiment includes: a drain pan main body 341 for receiving dew condensation water generated in the heat exchanger 50; and a guide portion 343 that forms a ventilation passage 342 that guides air blown out from the

air blowers

20A, 20B (shown in fig. 3) to the bottom surface air outlet 12. The air passage 342 of the present embodiment is provided so that the air conditioned by the heat exchanger 50 is blown out obliquely downward from the bottom surface air outlet 12 toward the wall surface Wa side. In other words, the bottom air outlet 12 of the present embodiment blows out the air conditioned by the heat exchanger 50 obliquely downward toward the wall surface Wa side. Specifically, the ventilation passage 342 has a deflection portion 342a extending from the upstream toward the downstream toward the wall surface Wa in the vicinity of the bottom surface air outlet 12. In the present embodiment, the angle θ 2 formed by the plane D1 parallel to the wall surface Wa and the plane D3 parallel to the deflection portion 342a of the ventilation passage 342 is 30 degrees.

In embodiment 3, the same operational effects as those in embodiment 1 are exhibited.

[ 4 th embodiment ]

The indoor unit 401 of an air conditioner according to embodiment 4 has the same configuration as the indoor unit 1 of an air conditioner according to embodiment 1, except for the configuration of the heat exchanger 450, and reference is made to fig. 1 and 2. In embodiment 4, the same components as those in embodiment 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

Fig. 10 is a bottom view similar to fig. 4 of an indoor unit 401 of an air conditioner according to embodiment 4 of the present invention.

Referring to fig. 10, the indoor unit 401 of the present embodiment includes a heat exchanger 450, and the heat exchanger 450 is configured to surround 2

fans

20A and 20B from 4 directions, i.e., front, rear, left, and right. Specifically, the heat exchanger 450 includes a 1 st heat exchange portion 451 extending in the left-right direction and disposed between the blower 20A and the rear panel 10e, and a 2 nd heat exchange portion 452 extending in the front-rear direction and disposed between the blower 20A and the right side grill 10 c. The heat exchanger 450 includes a 3 rd heat exchange portion 453 extending in the left-right direction and disposed between the 2

fans

20A and 20B and the front grille 10B, and a 4 th heat exchange portion 454 extending in the front-rear direction and disposed between the fan 20B and the left side grille 10 d. The heat exchanger 450 has a 5 th heat exchange portion 455 extending in the left-right direction and disposed between the blower 20B and the rear panel 10 e. The 1 st heat exchange portion 451, the 2 nd heat exchange portion 452, the 3 rd heat exchange portion 453, the 4 th heat exchange portion 454, and the 5 th heat exchange portion 455 of the heat exchanger 450 of the present embodiment are integrally provided.

The 2 nd heat exchange portion 452 is provided to be connected to the 1 st heat exchange portion 451 at an end of one side (lower side in fig. 10), and is provided to be connected to the 3 rd heat exchange portion 453 at an end of the other side (upper side in fig. 10).

The 4 th heat exchange portion 454 is provided to be connected to the 5 th heat exchange portion 455 at an end of one side (lower side in fig. 10) and is provided to be connected to the 3 rd heat exchange portion 453 at an end of the other side (upper side in fig. 10).

Further, the 5 th heat exchange portion 455 is provided so as to be connected to the refrigerant pipe 55 at an end portion on one side (lower side in fig. 10). The connection portion between the heat exchanger 450 and the refrigerant pipe 55 is disposed near the center of the casing 10 in the lateral direction.

In embodiment 4, the same operational effects as those in embodiment 1 are exhibited.

While the embodiments have been described above, it is to be understood that various changes in form and details may be made therein without departing from the scope and spirit of the appended claims.

For example, the

indoor units

1, 101, 201, 301, and 401 of the air conditioners may have a drain pump. In this case, the drain pipe 44 is drawn upward from the casing 10.

Description of the reference symbols

1 … indoor unit

10 … casing

10a … bottom grating

10b … front grille

10c … right side grid

10d … left side grid

10e … Back panel (mounting part)

10f … Top Panel

11 … suction inlet

12 … bottom outlet (1 st outlet)

13 … front outlet (No. 2 outlet)

14 … Right side outlet (No. 2 outlet)

15 … left side outlet (No. 2 outlet)

16A and 16B … bottom connection port

17A, 17B … side connection port

18 … storage part

20A, 20B … blower

30 … horn mouth

40 … drain pan

41 … drainage tray body

42 … ventilation path

43 … guide (thermal insulation material)

43a … flexure

43b … back side part

44 … water outlet pipe

50 … heat exchanger

51 … Heat exchange part 1

52 … Heat exchange part 2

53 … Heat exchange part No. 3

54 … heat exchange part 4

55 … refrigerant pipe

101 … indoor unit

140 … drainage tray

141 … drainage tray body

160 … guide (thermal insulation material)

161 … ventilation path

201 … indoor unit

270 … baffle

301 … indoor unit

340 … drain pan

341 … Drain tray body

342 … ventilation path

342a … deflection portion

343 … guide part

401 … indoor unit

450 … heat exchanger

451 … Heat exchange part 1

452 … heat exchange part 2

453 st 453 … No. 3 Heat exchange section

454 … heat exchange part 4

455 th 5 heat exchange portion 455 …

Corner of C1, C2 …

Claims

1. An indoor unit (1, 101, 201, 301, 401) of an air conditioner, characterized in that the indoor unit (1, 101, 201, 301, 401) of the air conditioner comprises:

at least 1 blower (20A, 20B);

heat exchangers (50, 450) configured to surround the blowers (20A, 20B) from 4 directions, i.e., front, rear, left, and right; and

a casing (10) for accommodating the blowers (20A, 20B) and the heat exchangers (50, 450),

the housing (10) has:

a suction port (11);

blow-out ports (12, 13, 14, 15);

a mounting portion (10e) provided on a side surface of the housing (10) for mounting the housing (10) to a wall surface (Wa); and

a housing section (18) which is disposed on the side of the mounting section (10e) with respect to the heat exchanger (50, 450) and which houses at least a pipe (55) connected to the heat exchanger (50, 450),

the air blowers (20A, 20B), the heat exchangers (50, 450), the mounting portion (10e), and the housing portion (18) are arranged in parallel in the order of the air blowers (20A, 20B), the heat exchangers (50, 450), the housing portion (18), and the mounting portion (10e) when viewed from the side.

2. An indoor unit (1, 101, 201, 301, 401) of an air conditioner according to claim 1,

the indoor unit (1, 101, 201, 301, 401) of the air conditioner has a heat insulating material (43, 160), and the heat insulating material (43, 160) is disposed between the heat exchanger (50, 450) and the storage unit (18).

3. Indoor unit (1, 101, 201, 301, 401) of an air conditioner according to claim 1 or 2,

the indoor unit (1, 101, 201, 301, 401) of the air conditioner includes a plurality of the blowers (20A, 20B),

a plurality of the blowers (20A, 20B) are arranged side by side,

the storage section (18) extends in a direction in which the plurality of air blowers (20A, 20B) are arranged.

4. An indoor unit (1, 101, 201, 301, 401) of an air conditioner according to any one of claims 1 to 3,

the housing (10) has corner portions (C1, C2) on the side of the mounting portion (10e),

the corner portions (C1, C2) have at least 1 connection port (16A, 16B, 17A, 17B) through which the pipe (55) is inserted.

5. An indoor unit (1, 101, 201, 301, 401) of an air conditioner according to any one of claims 1 to 4,

the air outlets (12, 13, 14, 15) include a 1 st air outlet (12) provided on the bottom surface of the casing (10) on the side of the mounting portion (10 e).

6. An indoor unit (1, 101, 201, 301, 401) of an air conditioner according to claim 5,

the 1 st air outlet (12) is provided on the opposite side of the mounting portion (10e) with respect to the housing portion (18) in a bottom view.

7. The indoor unit (201, 301) of an air conditioner according to claim 5 or 6,

the indoor unit (201, 301) of the air conditioner has a suction port (11), the suction port (11) is provided on the bottom surface of the casing (10) and on the opposite side of the installation section (10e) with respect to the 1 st discharge port (12),

the 1 st air outlet (12) blows air obliquely downward toward the wall surface (Wa).

8. An indoor unit (1, 101, 201, 301, 401) of an air conditioner according to any one of claims 5 to 7,

the casing (10) has a ventilation path (42, 161, 342) for guiding the air from the blower (20A, 20B) to the 1 st air outlet (12),

the ventilation passage (42) has a portion (42a) formed separately from the mounting portion (10 e).

9. An indoor unit (1, 101, 201, 301, 401) of an air conditioner according to claim 8,

the housing (18) is disposed on the mounting portion (10e) side of the ventilation passage (42, 161, 342).

10. An indoor unit (1, 101, 201, 301, 401) of an air conditioner according to any one of claims 5 to 9,

the air outlets (12, 13, 14, 15) include at least 1 second air outlet (13, 14, 15) provided on a side surface of the casing (10).

11. An indoor unit (1, 101, 201, 301, 401) of an air conditioner according to any one of claims 1 to 10,

the blowers (20A, 20B) are provided such that the rotational axes (R) of the blowers (20A, 20B) extend in the vertical direction.