CN216204235U

CN216204235U - Ceiling suspension type indoor unit of air conditioner

Info

Publication number: CN216204235U
Application number: CN201990001196.2U
Authority: CN
Inventors: 木村刚士; 须原遼太; 塩滨豪典; 仲山聡通
Original assignee: Daikin Industries Ltd
Current assignee: Daikin Industries Ltd
Priority date: 2018-11-30
Filing date: 2019-10-07
Publication date: 2022-04-05
Anticipated expiration: 2029-10-07
Also published as: WO2020110466A1; JP6863360B2; JP2020085405A

Abstract

A ceiling-suspended air conditioner indoor unit (30) is provided with: a housing (40); at least one of a refrigerant pipe (80), a drain pipe (83), and a terminal block (141); and decorative covers (61, 62), the refrigerant pipeline (80), the drainage pipeline (83) and the terminal base (141) are respectively arranged on the shell (40), the refrigerant pipeline (80) is provided with first connecting parts (81a, 82a), the drainage pipeline (83) is provided with a second connecting part (83a) connected with the drainage hose (150), the terminal base (141) is provided with a third connecting part (142) for connecting the wiring (144), and the decorative covers (61, 62) are independent from the shell (40), can be installed on the shell (40) and can be detached from the shell (40). The decorative covers (61, 62) cover at least one of the first connecting portions (81a, 82a), the second connecting portion (83a), and the third connecting portion (142). As a result, the ease of maintenance and the appearance of the indoor unit can be improved.

Description

Ceiling suspension type indoor unit of air conditioner

Technical Field

The present disclosure relates to a ceiling suspension type indoor unit of an air conditioner.

Background

Heretofore, the following ceiling suspension type air conditioner indoor unit (hereinafter also simply referred to as "indoor unit") has been known. The heat exchanger includes a housing that houses the heat exchanger, and is provided such that a refrigerant pipe and a drain pipe protrude from a side surface of the housing (for example, patent document 1). A refrigerant pipe connected to the heat exchanger, the refrigerant flowing inside thereof; the drain pipe is used to drain the drain water generated in the heat exchanger.

Patent document 1: japanese laid-open patent publication No. Hei 11-173599

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved by Utility model

In many cases, a refrigerant pipe and a drain pipe provided in the indoor unit casing are provided with a connection portion for connecting a member (for example, a connection pipe or a drain hose through which the refrigerant flows inside) for connecting the refrigerant pipe and the drain pipe to the outside of the indoor space to be air-conditioned. Preferably, the connection unit is easily accessible to an operator when the operator performs maintenance on the indoor unit. However, if the ease of contact is regarded as important and these connection portions are exposed, the aesthetic appearance of the indoor unit is impaired.

The purpose of this disclosure lies in: the maintenance easiness and the appearance of the indoor unit are improved.

Technical solution for solving technical problem

The disclosure of the first aspect is directed to the indoor unit 30 of the ceiling-suspended air conditioner 10. The air conditioner includes a case 40, a heat exchanger 31,

decorative covers

61 and 62, a refrigerant pipe 80, a drain pipe 83, and a terminal block 141, an air passage 57 is formed inside the case 40, the heat exchanger 31 is housed in the case 40, the

decorative covers

61 and 62 are independent from the case 40 and can be attached to and detached from the case 40, the refrigerant pipe 80 is connected to the heat exchanger 31, and the drain pipe 83 is used for discharging drain water generated in the heat exchanger 31, and is characterized in that: the refrigerant pipe 80 has

first connection portions

81a, 82a, the

first connection portions

81a, 82a are connected to the

coupling pipes

13, 14, the

connection pipes

13, 14 connect the indoor unit 30 and the outdoor unit 20, the refrigerant flows through the

connection pipes

13, 14, the drainpipe 83 has a second connection part 83a, the second connection part 83a is connected with a drain hose 150 for discharging the drain to the outside of the indoor unit 30, the terminal block 141 has a third connecting portion 142 to which a wiring 144 is connected, at least one of the first connecting

portions

81a and 82a, the second connecting portion 83a, and the third connecting portion 142 is covered with the

decorative covers

61 and 62, in a state where the

decorative covers

61 and 62 are removed from the housing 40, at least one of the first connecting

portions

81a and 82a, the second connecting portion 83a, and the third connecting portion 142 is exposed from the housing 40.

In the disclosure of the first aspect, the refrigerant piping 80, the drain piping 83, and the terminal block 141 are included in the indoor unit 30. At least one of the

first connection portions

81a and 82a of the refrigerant pipe 80, the second connection portion 83a of the drain pipe 83, and the third connection portion 142 of the terminal block 141 is covered with the

decorative covers

61 and 62. This can improve the appearance of the indoor unit 30.

In addition, in the disclosure of the first aspect, the trim covers 61, 62 can be attached to and detached from the housing 40. Therefore, when the

first connection portions

81a and 82a, the second connection portion 83a, or the third connection portion 142 are to be repaired, the worker can easily contact the

first connection portions

81a and 82a, the second connection portion 83a, or the third connection portion 142 by removing the

decorative covers

61 and 62 from the housing 40. Since the first connecting

portions

81a, 82a, the second connecting portion 83a or the third connecting portion 142 are exposed from the housing 40 if the trim covers 61, 62 are removed from the housing 40. Thus, according to the disclosure of the first aspect, the indoor unit 30 can be easily maintained.

The disclosure of the second aspect is based on the disclosure of the first aspect, and is characterized in that: the fixing portion 90 is provided to fix the

decorative covers

61 and 62 to the housing 40, and the fixing portion 90 is configured to be switchable between a fixed state in which the

decorative covers

61 and 62 are fixed to the housing 40 and a non-fixed state in which the

decorative covers

61 and 62 are removable from the housing 40 by sliding the

decorative covers

61 and 62 along the

side surfaces

45a and 46a of the housing 40.

In the disclosure of the second aspect, the trim covers 61, 62 are fixed to the housing 40 when the fixing portion 90 is in a fixed state. On the other hand, when the fixing portion 90 is in the unfixed state, the trim covers 61 and 62 can be removed from the housing 40. Here, by sliding the

decorative covers

61 and 62 along the

side surfaces

45a and 46a of the housing 40, the fixed state and the non-fixed state of the fixing portion 90 can be switched. Therefore, the indoor unit 30 can be more easily maintained.

The disclosure of the third aspect is based on the disclosure of the second aspect, and is characterized in that: the fixing portion 90 can be switched between the fixed state and the non-fixed state by sliding the trim covers 61 and 62 in the horizontal direction along the

side surfaces

45a and 46a of the housing 40.

In the third aspect of the disclosure, the

decorative covers

61 and 62 are slid in the horizontal direction along the

side surfaces

45a and 46a of the housing 40, whereby the fixed state and the non-fixed state of the fixing portion 90 can be switched. Therefore, when the fixed state and the non-fixed state of the fixing portion 90 are switched, it is not necessary to lift the

decorative covers

61 and 62 attached to the casing 40 of the indoor unit 30 at a high indoor position, and the burden on the operator can be reduced.

The disclosure of the fourth aspect is based on the disclosure of any one of the first to third aspects, and characterized in that: the

decorative covers

61 and 62 cover at least one of the

first connection portions

81a and 82a and the second connection portion 83 a.

In the disclosure of the fourth aspect, at least one of the

first connection portions

81a, 82a of the refrigerant pipe 80 and the second connection portion 83a of the drain pipe 83 is covered by the

decorative covers

61, 62.

The disclosure of the fifth aspect is based on the disclosure of the fourth aspect, and is characterized in that: the

first connection portions

81a, 82a and the second connection portion 83a are disposed between the

same side

45a, 46a of the housing 40 and the trim covers 61, 62, and the linking

ducts

13, 14 and the drain hose 150 extend across a horizontal plane HP extending along the upper surface 41a of the housing 40.

In the disclosure of the fifth aspect, the

first connection portions

81a, 82a of the refrigerant piping 80 and the second connection portion 83a of the drain piping 83 are located on the

same side faces

45a, 46a side of the housing 40 and outside the housing 40. Therefore, for example, when the

first connection portions

81a and 82a and the second connection portion 83a are to be subjected to warranty, the warranty can be made easier. The

connection pipes

13 and 14 connected to the

first connection portions

81a and 82a and the drain hose 150 connected to the second connection portion 83a extend across a horizontal plane HP extending along the upper surface 41a of the housing 40. In other words, the connecting

pipes

13 and 14 and the drain hose 150 extend across the horizontal plane HP from bottom to top. The "lower" and "upper" as used herein refer to "lower" and "upper" in the installed state of the indoor unit 30.

The disclosure of the sixth aspect is based on the disclosure of the fourth aspect, and is characterized in that: the casing 40 has a blow-out port 56 for blowing out conditioned air formed in a front surface 43a thereof, the

first connection portions

81a, 82a and the second connection portion 83a are disposed between the

same side surfaces

45a, 46a of the casing 40 and the

decorative covers

61, 62, a surface of the casing 40 facing the front surface 43a is a rear surface 44a, and the

connection ducts

13, 14 and the drain hose 150 extend across a plane P extending along the rear surface 44 a.

In the disclosure of the sixth aspect, the

first connection portions

same side faces

first connection portions

connection pipes

13 and 14 connected to the

first connection parts

81a and 82a and the drain hose 150 connected to the second connection part 83a extend across a plane P extending along the rear surface 44a of the housing 40. In other words, the linking

pipes

13, 14 and the drain hose 150 extend across the plane P from front to back. Note that "from front to rear" means a direction from the front surface 43a where the air outlet 56 is formed toward the rear surface 44a where the air inlet 55 is formed.

A seventh aspect is disclosed on the basis of any one of the above-described first to sixth aspects, characterized in that: the

decorative covers

61 and 62 cover the third connecting portion 142.

In the seventh disclosure, the third connecting portion 142 of the terminal block 141 is covered by the

decorative covers

61 and 62.

The disclosure of the eighth aspect is based on the disclosure of any one of the above-described first to seventh aspects, characterized in that: the

decorative covers

61 and 62 cover the screws 47 provided on the lower surface 42a of the housing 40 on the

side surfaces

45a and 46a with respect to the center of the lower surface 42a from below.

In the disclosure of the eighth aspect, the screws 47 provided on the lower surface 42a of the housing 40 are covered from below by the trim covers 61, 62. Therefore, as compared with a case where the screw 47 is exposed, for example, the screw 47 is less visible to an indoor person, and the appearance of the indoor unit 30 can be improved.

The disclosure of the ninth aspect is based on the disclosure of any one of the above-described first to eighth aspects, characterized in that: an air outlet 56 for discharging the conditioned air is formed in the front surface 43a of the casing 40, a surface facing the front surface 43a is a rear surface 44a, and an air inlet 55 for sucking the indoor air is formed in the rear surface 44a, and the

decorative covers

61 and 62 are detachable from the

side surfaces

45a and 46a of the casing 40 while being attached to the

side surfaces

45a and 46a other than the front surface 43a and the rear surface 44 a.

In the ninth aspect of the disclosure, air in the room is sucked from the suction port 55 formed in the rear surface 44a of the casing 40. The sucked air flows through the casing 40 and is discharged into the room from the air outlet 56 formed in the front surface 43a of the casing 40. The

decorative covers

61, 62 are attachable to and detachable from the

side surfaces

45a, 46a of the housing 40 other than the front surface 43a and the back surface 44 a.

Drawings

Fig. 1 is a refrigerant circuit diagram of an air conditioning apparatus according to an embodiment;

fig. 2 is a perspective view of the indoor unit of the embodiment viewed from obliquely above;

fig. 3 is a plan view of the indoor unit according to the embodiment;

fig. 4 is a sectional view showing the indoor unit taken along line IV-IV of fig. 3;

fig. 5 is a perspective view of the indoor unit according to the embodiment viewed from a rear oblique lower side;

fig. 6 is a perspective view of the indoor unit of the embodiment viewed from a rear oblique lower side, and is a view showing a state where the decorative cover is removed;

fig. 7 is a perspective view of the electronic component box according to the embodiment viewed from a rear oblique lower side;

fig. 8 is a right side view of the electronic component box according to the embodiment, with a right side plate of the electronic component box main body omitted;

fig. 9 is a perspective view of the right trim cover of the embodiment viewed from diagonally above behind;

fig. 10 is a schematic plan sectional view for explaining the fixing portion.

Detailed Description

Embodiments of the present invention will be explained. The air conditioner 10 of the present embodiment includes an indoor unit 30 and an outdoor unit 20 connected to the indoor unit 30, and the air conditioner 10 conditions indoor air.

In the present specification, the terms indicating the directions such as "up", "down", "right", "left", "front surface", "back surface", and the like all refer to the directions when the indoor unit 30 in the installed state is viewed from the front side (front surface side).

-air conditioning device-

Referring to fig. 1, an air conditioner 10 will be described.

As shown in fig. 1, the air conditioner 10 includes an indoor unit 30 and an outdoor unit 20. In the air conditioner 10, a compressor 21, a four-way selector valve 22, an outdoor heat exchanger 23, an expansion valve 24, and an indoor heat exchanger 31, which will be described later, are connected by pipes to constitute a refrigerant circuit 11 that performs a vapor compression refrigeration cycle.

Indoor machine

The indoor unit 30 is installed in an indoor space to be air-conditioned, and includes an indoor heat exchanger 31 and an indoor fan 32.

The indoor heat exchanger 31 exchanges heat between the refrigerant flowing inside the indoor heat exchanger and the indoor air supplied from the indoor fan 32. The indoor heat exchanger 31 is constituted by, for example, a fin-and-tube heat exchanger. The indoor heat exchanger 31 constitutes a heat exchanger.

The indoor fan 32 is used to supply indoor air to the indoor heat exchanger 31 and supply conditioned air to the indoor space.

Outdoor machine

The outdoor unit 20 is installed outdoors, and includes a compressor 21, a four-way selector valve 22, an outdoor heat exchanger 23, an outdoor fan 25, an expansion valve 24, a liquid-side normally-closed valve 26, and an air-side normally-closed valve 27.

The compressor 21 sucks in the low-pressure gas refrigerant flowing out of the heat exchanger functioning as an evaporator of the indoor heat exchanger 31 and the outdoor heat exchanger 23, compresses the refrigerant, and discharges the high-temperature high-pressure gas refrigerant. The high-pressure gas refrigerant discharged from the compressor 21 flows into the heat exchanger functioning as a radiator of the indoor heat exchanger 31 and the outdoor heat exchanger 23.

The four-way selector valve 22 is used to reversibly switch the direction of refrigerant flow in the refrigerant circuit 11. Specifically, the four-way selector valve 22 is switchable between a first state (indicated by solid lines in fig. 1) in which the indoor heat exchanger 31 is in the evaporator and the air-conditioning apparatus 10 is performing a cooling operation, and a second state (indicated by broken lines in fig. 1) in which the indoor heat exchanger 31 is in the radiator and the air-conditioning apparatus 10 is performing a heating operation.

The outdoor heat exchanger 23 exchanges heat between the refrigerant flowing inside the outdoor heat exchanger and outdoor air supplied from the outdoor fan 25. The outdoor heat exchanger 23 is constituted by, for example, a fin-and-tube heat exchanger.

The outdoor fan 25 is used to supply outdoor air to the outdoor heat exchanger 23.

The expansion valve 24 is used to reduce the pressure of the refrigerant flowing out of the heat exchanger functioning as a radiator of the indoor heat exchanger 31 and the outdoor heat exchanger 23. The expansion valve 24 is constituted by, for example, an electronic valve whose opening degree is adjustable.

Work in operation

The air conditioner 10 selectively performs a cooling operation and a heating operation.

In the cooling operation, the four-way selector valve 22 is set to the first position, and the refrigerant circulates through the refrigerant circuit 11. The outdoor heat exchanger 23 functions as a radiator, and the indoor heat exchanger 31 functions as an evaporator. The indoor unit 30 cools air drawn from the indoor space in the indoor heat exchanger 31, and then blows the cooled air to the indoor space.

In the heating operation, the four-way selector valve 22 is set to the second position, and the refrigerant circulates through the refrigerant circuit 11. The indoor heat exchanger 31 functions as a radiator, and the outdoor heat exchanger 23 functions as an evaporator. The indoor unit 30 heats air drawn from the indoor space in the indoor heat exchanger 31, and then blows the heated air to the indoor space.

-indoor units-

The indoor unit 30 of the present embodiment is a ceiling-suspended indoor unit, and is installed near the ceiling of an indoor space. Here, the indoor unit 30 of the present embodiment will be described with reference to fig. 2 to 10 as appropriate.

As shown in fig. 2 to 6 and 9, the indoor unit 30 is formed in a flat rectangular parallelepiped shape as a whole. The indoor unit 30 includes a casing 40, a blowing unit 70, a pair of

decorative covers

61 and 62, and a fixing portion 90.

Housing

As shown in fig. 3 and 6, the housing 40 is formed in a flat rectangular parallelepiped shape. The housing 40 includes an upper panel 41, a bottom panel 42, a front panel 43, a rear panel 44, a right panel 45, and a left panel 46.

The outer surface of the upper panel 41 forms an upper surface 41a of the housing 40. The outer surface of the bottom panel 42 forms a lower surface 42a of the housing 40. The outer surface of the front panel 43 forms a front surface 43a of the housing 40. The outer surface of the rear panel 44 forms a rear surface 44a of the housing 40. The outer surface of the right panel 45 forms a right side surface 45a of the housing 40. The outer surface of the left panel 46 forms a left side surface 46a of the housing 40. The right side surface 45a and the left side surface 46a constitute side surfaces, respectively.

As shown in fig. 4, casing 40 has suction port 55 formed in rear panel 44 and discharge port 56 formed in front panel 43. Alternatively, the casing 40 has a suction port 55 formed in the back surface 44a thereof and a discharge port 56 formed in the front surface 43a thereof. An air passage 57 is formed in the casing 40 from the suction port 55 to the discharge port 56. The indoor heat exchanger 31 and the indoor fan 32 are housed in an air passage 57 in the casing 40. In the air passage 57, the indoor fan 32 is disposed closer to the intake port 55 side with respect to the center of the air passage 57 in the front-rear direction, and the indoor heat exchanger 31 is closer to the discharge port 56 than the indoor fan 32. In addition, a drain pan 33 is disposed below the indoor heat exchanger 31.

As shown in fig. 3 and 6, a refrigerant pipe 80 and a drain pipe 83 are provided in the housing 40.

The refrigerant pipe 80 includes first and

second connection pipes

81 and 82 and a liquid pipe connection end 81a and a gas pipe connection end 82a to which the

coupling pipes

13 and 14 are connected. Here, the connecting

pipes

13 and 14 are respectively constituted by a liquid pipe 13 and a gas pipe 14, and the liquid pipe 13 and the gas pipe 14 are used for connecting the indoor unit 30 and the outdoor unit 20, and a refrigerant flows inside them (see also fig. 1). In addition, the first connection pipe 81 and the second connection pipe 82 are respectively pipe-shaped members connected to the indoor heat exchanger 31.

The liquid pipe connection end 81a is provided at the protruding end of the first connection pipe 81; the air pipe connection end 82a is provided at the protruding end of the second connection pipe 82. The liquid tube connection end 81a makes the first connection tube 81 and the liquid tube 13 communicate with each other; the air pipe connection end 82a makes the second connection pipe 82 and the air pipe 14 communicate with each other. The liquid pipe connection end 81a and the air pipe connection end 82a are respectively exposed from the housing 40, and in the illustrated example, the liquid pipe connection end 81a and the air pipe connection end 82a are disposed between the right panel 45 and the right trim cover 61 of the housing 40. The liquid pipe connection end 81a and the air pipe connection end 82a constitute a first connection portion and are covered by the right decorative cover 61.

In addition, the connecting

pipes

13, 14, in other words, the liquid pipe 13 and the air pipe 14 extend across a horizontal plane HP that expands along the upper surface 41a of the housing 40 (see fig. 4). In other words, the liquid pipe 13 extends upward from the portion connected to the liquid pipe connection end 81a, and crosses the horizontal plane HP from bottom to top; the air pipe 14 extends upward from the portion connected to the air pipe connection end 82a, and crosses the horizontal plane HP from bottom to top.

The drain pipe 83 includes a hose connection part 83a for connecting a pump connection pipe not shown and the drain hose 150. Here, the drain hose 150 is used to discharge the drain generated in the indoor heat exchanger 31 to the outside of the indoor unit 30. The pump connection pipe is provided in the casing 40 and connected to a drain pump, not shown, for drawing out the drain water in the drain pan 33.

The hose connection part 83a is formed of a cylindrical member attached to the right panel 45 of the housing 40. The hose connection part 83a communicates the outflow end of the pump connection pipe and the inflow end of the drain hose 150 with each other. The hose connection part 83a is exposed from the housing 40, and in the illustrated example, is disposed between the right panel 45 of the housing 40 and the right trim cover 61. The drain pipe 83 may be formed of a member integrally formed with the pump connection pipe and the hose connection member 83 a. The hose connection member 83a constitutes a second connection portion, and is covered by the right trim cover 61. The member constituting the second connection portion is not limited to the hose connection member 83 a. For example, the second connection portion may be formed by a connection portion of a natural drainage hose that drains drainage in the drainage tray 33 by gravity.

In addition, the drain hose 150 extends across a horizontal plane HP (see fig. 4) extending along the upper surface 41a of the housing 40. In other words, the drain hose 150 extends upward from the portion connected to the hose connection member 83a, and crosses the horizontal plane HP from bottom to top.

As shown in fig. 6, a screw 47 for fastening the bottom panel 42 to the right panel 45 is provided on the lower surface 42a of the case 40 toward the right side surface 45a with respect to the center of the lower surface 42 a. The same screws are provided on the lower surface 42a of the housing 40 toward the left side surface 46a with respect to the center of the lower surface 42a, and illustration thereof is omitted.

As shown in fig. 5 and 6, the electronic component box 100 is provided on the housing 40. The electronic component box 100 is formed in a box shape having a substantially rectangular parallelepiped shape. As shown in fig. 6 and 7, the electronic component box 100 is provided on the casing 40 so that the shortest side is the left-right direction and the longest side is the front-rear direction. In addition, two terminal blocks 141 are accommodated in the electronic component box 100.

The electronic component box 100 includes an electronic component box main body 110 and a cover 120. The cover 120 can be attached to and detached from the electronic component box main body 110.

The electronic component box main body 110 is formed in a box shape with an open lower surface, and forms a front side surface, a rear side surface, an upper surface, and right and left side surfaces of the electronic component box 100. The electronic component box main body 110 includes an upper plate 111, a front plate 112, a rear plate 113, a right plate 114, and a left plate 115, the upper plate 111 forming an upper surface of the electronic component box 100; the front side plate 112 forms a front side surface of the electronic component box 100; the rear side plate 113 forms the rear side 102 of the electronic component box 100; the right side plate 114 forms the right side surface 103 of the electronic component box 100; the left side plate 115 forms a left side surface of the electronic component box 100.

The cover 120 includes a cover body 121 and a protruding plate 122. The cover body 121 is a rectangular tray shaped member having a size capable of covering the lower surface of the electronic component box body 110. The probe plate 122 is a plate-like portion connected to the cap body 121, and extends to the right side of the cap body 121. The cover 120 is attached to the electronic component box main body 110, and the cover main body 121 covers the lower surface of the electronic component box main body 110. The cover main body 121 of the cover 120 forms the lower surface 101 of the electronic component box 100.

As shown in fig. 8, each terminal block 141 is a so-called relay terminal block. Each terminal block 141 has a connection terminal 142 to which an electric wire 144 extending to the outside of the electronic component box 100 is connected. The electric wire 144 may be, for example, a power supply line or a wiring line connecting the indoor unit 30 and the outdoor unit 20. The electric wire 144 is a member requiring regular maintenance, and the right trim cover 61 needs to be removed during maintenance. Each terminal block 141 is fixed to the left side plate 115 of the electronic component box main body 110 of the electronic component box 100 via a stay or the like. The connection terminal 142 constitutes a third connection portion, and the electric wire 144 constitutes a wiring.

Blow-out unit

As shown in fig. 2 and 3, the blowing unit 70 is formed in a rectangular parallelepiped shape having a long lateral length, and the blowing unit 70 is provided so as to cover the front surface of the housing 40. The blowout unit 70 is arranged with its back surface in contact with the front panel 43 of the housing 40.

As shown in fig. 4, a discharge-side passage 71 is formed inside the blowing unit 70. The inlet end of the discharge-side passage 71 is open toward the rear surface of the blowout unit 70, and the outlet end thereof is open toward the front surface of the blowout unit 70. The inlet end of the discharge-side passage 71 is connected to the blow-out port 56 of the casing 40.

A plurality of (four in the present embodiment) airflow direction adjustment vanes 72 are provided at the outlet end of the discharge-side passage 71. The wind direction adjustment vane 72 is an elongated rectangular plate-like member. The airflow direction adjustment vane 72 is disposed so that its longitudinal direction is substantially horizontal, and crosses the outlet end of the discharge-side passage 71 in the left-right direction (see fig. 2). The four airflow direction adjustment vanes 72 are arranged at the outlet end of the discharge-side passage 71 so as to be parallel to each other in the longitudinal direction thereof and at equal intervals in the vertical direction. Each wind direction adjustment vane 72 is rotatable within a predetermined angular range about a rotation axis formed along the longitudinal direction thereof. If the angle of the airflow direction adjustment vane 72 changes, the direction of the air discharged from the discharge-side passage 71 changes in the vertical direction.

Decoration cover

The decorative covers 61 and 62 are elongated rectangular parallelepiped members. One side surface of the long side of the

decorative covers

61, 62 is open. In addition, the lengths of the trim covers 61 and 62 are substantially equal to the length from the back surface of the casing 40 to the front surface of the blowout unit 70. The trim covers 61, 62 include a right trim cover 61 disposed on the right side of the housing 40 and a left trim cover 62 disposed on the left side of the housing 40. No air passage is formed inside each of the

decorative covers

61 and 62.

The decorative covers 61 and 62 are attached to the casing 40 so that the open side faces face the casing 40 side, and cover the side faces of the casing 40 and the side faces of the blowing unit 70. The right decorative cover 61 covers the right side face 45a of the housing 40 and the right side face of the blowout unit 70. Therefore, the right decorative cover 61 covers the liquid pipe connection end 81a and the gas pipe connection end 82a of the refrigerant pipe 80 and the hose connection part 83a of the drain pipe 83. The left trim cover 62 covers the left side surface 46a of the housing 40 and the left side surface of the blowout unit 70. Further, the screws 47 are covered by the

decorative covers

61 and 62 from below.

Fixed part

The indoor unit 30 is provided with the same fixing portions 90 on both left and right sides, and only the fixing portion 90 on the right side will be described below. The fixing portion 90 includes a fixing hole 91 formed in the right panel 45 of the housing 40 or the blow-out unit 70 and a fixing hook 92 provided to the right trim cover 61.

As shown in fig. 6, one fixing hole 91 is formed in each of the upper and lower portions of the right panel 45 of the housing 40. Two fixing holes 91 are also formed in the front portion of the blowing unit 70 in a vertically aligned manner.

As shown in fig. 9, a total of four fixing hooks 92 are provided in the right trim cover 61 at positions corresponding to the fixing holes 91. Specifically, the right trim cover 61 is provided at its upper portion with one fixing hook 92, at its lower portion with one fixing hook 92, and at its front portion with two fixing hooks 92. The fixing hook 92 is formed in a hook shape with a protruding end portion bent toward the rear of the right trim cover 61.

Fig. 10 shows the fixing portion 90 in a detached state at its upper stage, the fixing portion 90 in an unfixed state at its middle stage, and the fixing portion 90 in a fixed state at its lower stage. As shown in the lower part of fig. 10, the right fixing portion 90 can fix the right trim cover 61 to the housing 40.

Next, the operation of the fixing portion 90 will be described with reference to fig. 10.

First, in order to switch the fixing portion 90 from the detached state to the unfixed state, each fixing hook 92 on the right trim cover 61 and the corresponding fixing hole 91 on the housing 40 or the blow-out unit 70 are opposed to each other (upper stage portion of fig. 10), and then each fixing hook 92 is inserted into the corresponding fixing hole 91 (middle stage portion of fig. 10). Thus, the fixing portion 90 is in an unfixed state. Here, the removed state is a state in which the right trim cover 61 has been removed from the housing 40. The unfixed state is a state in which the right trim cover 61 can be attached to the housing 40.

Next, in order to switch the fixing portion 90 from the unfixed state to the fixed state, the right trim cover 61 is slid in the horizontal direction along the right side surface 45a of the housing 40. More specifically, the right trim cover 61 is slid rearward (lower portion in fig. 10). Thus, each fixing hook 92 is engaged with the corresponding fixing hole 91, and the fixing portion 90 is fixed. Here, the fixed state is a state in which the right trim cover 61 is fixed to the housing 40.

By the above operation, the fixing portion 90 can be switched from the detached state to the fixed state via the unfixed state. In other words, the right trim cover 61 can be attached to the housing 40 by the above operation.

On the other hand, by performing the operation in reverse to this, the fixing portion 90 can be switched from the fixed state to the detached state via the non-fixed state. In other words, the right trim cover 61 can be removed from the housing 40 by the reverse operation to the above.

Specifically, in order to switch the fixing portion 90 from the fixed state to the non-fixed state, the right trim cover 61 is slid in the horizontal direction along the right side surface 45a of the housing 40. More specifically, the right trim cover 61 is slid forward. Thus, the engagement of each fixing hook 92 with the corresponding fixing hole 91 is released, and the fixing portion 90 is in a non-fixed state. Here, the unfixed state is a state in which the right trim cover 61 can be removed from the housing 40.

Next, in order to switch the fixing portion 90 from the unfixed state to the detached state, each fixing hook 92 of the right trim cover 61 is pulled out from the corresponding fixing hole 91 of the housing 40 and the blow-out unit 70. Thus, the fixing portion 90 is in a detached state.

As described above, the fixing portion 90 can be switched from the unfixed state to the detached state or the fixed state. In other words, the unfixed state is a state in which the right trim cover 61 can be attached to the housing 40 and a state in which the right trim cover 61 can be detached from the housing 40.

Effects of the embodiment

The indoor unit 30 of the present embodiment includes a casing 40, an indoor heat exchanger 31,

decorative covers

61 and 62, a refrigerant pipe 80, a drain pipe 83, and a terminal block 141. The housing 40 has an air passage 57 formed therein; the indoor heat exchanger 31 is housed in the case 40; the

decorative covers

61, 62 are independent from the housing 40 and can be mounted on the housing 40 and dismounted from the housing 40; the refrigerant pipe 80 is connected to the indoor heat exchanger 31; the drain line 83 is used to drain the drain water generated in the indoor heat exchanger 31. The refrigerant pipe 80 has a liquid pipe connection end 81a and a gas pipe connection end 82a, the liquid pipe connection end 81a and the gas pipe connection end 82a are connected to the

connection pipes

13 and 14, the

connection pipes

13 and 14 connect the indoor unit 30 and the outdoor unit 20, and the refrigerant flows through the

connection pipes

13 and 14; the drain line 83 has a hose connection part 83a, and the hose connection part 83a is connected with a drain hose 150 for discharging the drain water to the outside of the indoor unit 30; the terminal block 141 has a connection terminal 142 to which a wiring 144 is connected; the liquid pipe connection end 81a, the air pipe connection end 82a, and the hose connection member 83a are covered with the

decorative covers

61 and 62, and the liquid pipe connection end 81a, the air pipe connection end 82a, and the hose connection member 83a are exposed from the housing 40 in a state where the

decorative covers

61 and 62 are removed from the housing 40. Therefore, the liquid pipe connection end 81a and the gas pipe connection end 82a of the refrigerant pipe 80 and the hose connection part 83a of the drain pipe 83 are covered by the

decorative covers

61, 62. This improves the appearance of the indoor unit 30. The decorative covers 61 and 62 can be attached to the housing 40 and detached from the

decorative covers

61 and 62. Therefore, when the liquid pipe connection end 81a and the liquid pipe connection end 82a or the hose connection member 83a are to be repaired, the operator can easily touch the liquid pipe connection end 81a and the liquid pipe connection end 82a or the hose connection member 83a by removing the

decorative covers

61 and 62 from the housing 40. This is because the liquid pipe connection end 81a and the air pipe connection end 82a and the hose connection part 83a are exposed from the housing 40 if the

decorative covers

61, 62 are removed from the housing 40. Thus, according to the present embodiment, the indoor unit 30 can be easily maintained.

The indoor unit 30 of the present embodiment includes a fixing portion 90 that can fix the

decorative covers

61 and 62 to the casing 40. Since the

decorative covers

61 and 62 slide along the right side surface 45a or the left side surface 46a of the housing 40, the fixing portion 90 can be switched between a fixed state in which the

decorative covers

61 and 62 are fixed to the housing 40 and an unfixed state in which the

decorative covers

61 and 62 can be removed from the housing 40. Therefore, when the fixing portion 90 is in the fixed state, the trim covers 61, 62 are fixed to the housing 40. On the other hand, when the fixing portion 90 is in the unfixed state, the trim covers 61 and 62 can be removed from the housing 40. Here, by sliding the

escutcheons

61, 62 along the right side surface 45a or the left side surface 46a of the case 40, it is possible to switch between the fixed state and the non-fixed state of the fixing portion 90. Therefore, the indoor unit 30 can be more easily maintained.

In the indoor unit 30 according to the present embodiment, the fixing portion 90 can be switched between the fixed state and the non-fixed state because the

decorative covers

61 and 62 slide in the horizontal direction along the right side surface 45a or the left side surface 46a of the casing 40. Therefore, the

decorative covers

61 and 62 can be switched between the fixed state and the non-fixed state of the fixing portion 90 by sliding in the horizontal direction along the right side surface 45a or the left side surface 46a of the housing 40. Therefore, when switching between the fixed state and the non-fixed state of the fixing portion 90, the operator can reduce the burden without lifting the

decorative covers

61 and 62 attached to the casing 40 in the indoor unit 30 at a high indoor position.

In the indoor unit 30 according to the present embodiment, the liquid pipe connection end 81a, the air pipe connection end 82a, and the hose connection member 83a are disposed between the right side surface 45a of the casing 40 and the decorative cover 61, and the

connection pipes

13 and 14 and the drain hose 150 extend across a horizontal plane HP extending along the upper surface 41a of the casing 40. Therefore, the liquid pipe connection end 81a and the gas pipe connection end 82a of the refrigerant pipe 80 and the hose connection part 83a of the drain pipe 83 are located on the same right side surface 45a side of the housing 40 and outside the housing 40. Therefore, for example, when the tube connection end 81a, the tube connection end 82a, and the hose connection member 83a are to be repaired, the repair can be made easier. The

connection pipes

13 and 14 connected to the liquid pipe connection end 81a and the air pipe connection end 82a, and the drain hose 150 connected to the hose connection member 83a extend across a horizontal plane HP extending along the upper surface 41a of the housing 40. In other words, the connecting

pipes

13 and 14 and the drain hose 150 extend across the horizontal plane HP from bottom to top.

In the indoor unit 30 according to the present embodiment, the

decorative covers

61 and 62 cover the screws 47 formed on the lower surface 42a of the casing 40 toward the right side surface 45a and the left side surface 46a with respect to the center of the lower surface 42a from below. Therefore, the screws 47 provided on the bottom panel 42 of the case 40 are covered by the trim covers 61 and 62 from below. Therefore, as compared with a case where the screw 47 is exposed, for example, the screw 47 is less visible to an indoor person, and the appearance of the indoor unit 30 can be improved.

In the indoor unit 30 according to the present embodiment, the casing 40 has a blow-out port 56 for blowing out conditioned air formed in the front surface 43a thereof, and has a back surface 44a facing the front surface 43a, and a suction port 55 for sucking in indoor air formed in the back surface 44a, and the

decorative covers

61 and 62 are detachable from the right side surface 45a and the left side surface 46a of the casing 40 while being attached to and detached from the right side surface 45a and the left side surface 46a of the casing 40. According to this configuration, the air in the room can be sucked through the suction port 55 formed in the rear surface 44a of the casing 40. The sucked air flows through the casing 40 and is blown out into the room from the air outlet 56 formed in the front surface 43a of the casing 40. The decorative covers 61, 62 can be attached to and detached from the right and left

side surfaces

45a, 46a in the case 40, respectively.

(other embodiments)

The above embodiment may have the following configuration.

Modification 1-

For example, the connecting

pipes

13 and 14 and the drain hose 150 may extend so as to intersect a plane P (see fig. 4) extending along the rear surface 44a of the housing 40. In other words, the liquid tube 13 and the air tube 14 may extend rearward from the portion connected to the liquid tube connection end 81a and the air tube connection end 82a and cross the plane P from front to rear, and the drain hose 150 may extend rearward from the portion connected to the hose connection member 83a and cross the plane P from front to rear.

Modification 2-

For example, the right side plate 114 may be omitted from the electronic component box 100. In this case, the connection terminals 142 on the terminal blocks 141 are exposed from the housing 40, more largely from the electronic component box 100, and are covered by the right trim cover 61.

Form 3

For example, at least one of the liquid tube connection end 81a, the air tube connection end 82a, and the hose connection part 83a may be provided to the left panel 46 of the housing 40. In this case, of the liquid pipe connection end 81a, the air pipe connection end 82a, and the hose connection member 83a, the member provided on the left panel 46 is covered by the left decorative cover 62.

The 4 th form of example

For example, the liquid pipe connection end 81a, the air pipe connection end 82a, the hose connection part 83a, and the connection terminal 142 may be provided so that at least one of them is exposed from the housing 40. Here, it is preferable that the liquid pipe connection end 81a, the air pipe connection end 82a, the hose connection member 83a, and the connection terminal 142 are covered by any one of the

decorative covers

61 and 62, which are present in the indoor unit 30 and are exposed from the casing 40.

Modification 5-

For example, since the rear surface 44a of the housing 40 is substantially vertical, the plane P extending along the rear surface 44a is substantially vertical, but if the rear surface 44a of the housing 40 is inclined with respect to the vertical, the plane P may be an inclined plane inclined with respect to the vertical.

Form 6

For example, each of the

decorative covers

61 and 62 may cover only the casing 40 without covering the blowing unit 70.

Modification 7-

For example, the housing 40 and the blowout unit 70 may be formed integrally.

The embodiments and modifications have been described above, but it is understood that various changes and modifications can be made without departing from the spirit and scope of the claims. The above embodiments and modifications may be appropriately combined and replaced as long as the functions of the objects of the present disclosure are not affected.

Industrial applicability-

In summary, the present disclosure is useful for a ceiling suspension type air conditioner indoor unit.

-description of symbols-

10 air conditioner

13 liquid pipe (connecting pipe)

14 trachea (connecting pipe)

20 outdoor machine

30 indoor machine

31 indoor heat exchanger (Heat exchanger)

40 casing

41a upper surface

42a lower surface

43a front surface

44a back side

45a right side (side)

46a left side (side)

47 screw

56 air outlet

57 air passage

61 Right decorative cover (decorative cover)

62 left decorative cover (decorative cover)

80 refrigerant pipe

81a liquid tube connection end (first connection)

82a air pipe connecting end (first connecting part)

83 drainage pipeline

83a hose connecting part (second connecting part)

90 fixed part

141 terminal base

142 connecting terminal (third connecting part)

144 electric wire (Wiring)

150 water drain hose

HP level

P plane

Claims

1. A ceiling-suspended air conditioner indoor unit, which is an indoor unit (30) of a ceiling-suspended air conditioner (10), and which includes a casing (40), a heat exchanger (31), a decorative cover, a refrigerant pipe (80), a drain pipe (83), and a terminal block (141), wherein an air passage (57) is formed inside the casing (40), the heat exchanger (31) is housed in the casing (40), the decorative cover is independent of the casing (40) and can be attached to and detached from the casing (40), the refrigerant pipe (80) is connected to the heat exchanger (31), and the drain pipe (83) is configured to drain water generated in the heat exchanger (31), and the indoor unit is characterized in that:

the refrigerant pipe (80) has a first connection portion connected to a connection pipe that connects the indoor unit (30) and the outdoor unit (20) and through which the refrigerant flows,

the drain duct (83) has a second connection part (83a), the second connection part (83a) is connected with a drain hose (150) for discharging the drain water to the outside of the indoor unit (30),

the terminal block (141) has a third connecting portion (142) to which a wiring (144) is connected,

at least one of the first connecting portion, the second connecting portion (83a), and the third connecting portion (142) is covered by the decorative cover, and at least one of the first connecting portion, the second connecting portion (83a), and the third connecting portion (142) is exposed from the housing (40) in a state where the decorative cover is removed from the housing (40).

2. A ceiling-suspended type air conditioner indoor unit as set forth in claim 1, wherein:

the ceiling suspension type air conditioner indoor unit comprises a fixing part (90) capable of fixing the decorative cover to the shell (40),

the fixing part (90) can be switched between a fixed state in which the decorative cover is fixed to the housing (40) and an unfixed state in which the decorative cover can be removed from the housing (40) by sliding the decorative cover along the side surface of the housing (40).

3. A ceiling-suspended type air conditioner indoor unit as set forth in claim 2, wherein:

the fixing section (90) can be switched between the fixed state and the non-fixed state by sliding the garnish in a horizontal direction along a side surface of the housing (40).

4. A ceiling-suspended type air conditioner indoor unit as set forth in any one of claims 1 to 3, wherein:

the decorative cover covers at least one of the first connecting portion and the second connecting portion (83 a).

5. A ceiling-suspended type air conditioner indoor unit as set forth in claim 4, wherein:

the first and second connection portions (83a) are arranged between the same side of the housing (40) and the trim cover,

the connecting duct and the drain hose (150) extend across a Horizontal Plane (HP) extending along the upper surface (41a) of the housing (40).

6. A ceiling-suspended type air conditioner indoor unit as set forth in claim 4, wherein:

an air outlet (56) for blowing out the conditioned air is formed in the front surface (43a) of the casing (40),

the surface of the case (40) facing the front surface (43a) is a rear surface (44a), and the connecting duct and the drain hose (150) extend across a plane (P) extending along the rear surface (44 a).

7. A ceiling-suspended type air conditioner indoor unit according to any one of claims 1 to 6, characterized in that:

the decorative cover covers the third connecting portion (142).

8. A ceiling-suspended type air conditioner indoor unit as set forth in any one of claims 1 to 7, wherein:

the decorative cover covers a screw (47) provided on a lower surface (42a) of the housing (40) and located on a side with respect to the center of the lower surface (42a) from below.

9. A ceiling-suspended type air conditioner indoor unit as set forth in any one of claims 1 to 8, wherein:

an air outlet (56) for discharging conditioned air is formed in a front surface (43a) of the casing (40), a surface facing the front surface (43a) is a rear surface (44a), an air inlet (55) for sucking indoor air is formed in the rear surface (44a),

the trim cover is attachable to and detachable from a side surface of the housing (40) other than the front surface (43a) and the back surface (44 a).