WO2004044496A1

WO2004044496A1 - Air conditioner indoor unit and method of assembling the same

Info

Publication number: WO2004044496A1
Application number: PCT/JP2003/014232
Authority: WO
Inventors: Yuichi Terada
Original assignee: Daikin Industries, Ltd.
Priority date: 2002-11-14
Filing date: 2003-11-07
Publication date: 2004-05-27
Also published as: US20050115264A1; KR100605843B1; AU2003277626A1; JP3731070B2; CN100368734C; EP1568945A1; AU2003277626B2; JP2004163018A; CN1692253A; KR20040086376A; EP1568945A4

Abstract

An air conditioner indoor unit and a method of assembling the unit, where a heat exchanger can be easily installed. An air conditioner indoor unit (2) has a cross-flow fan (71), an indoor heat exchanger (50), and a lower casing (70). The indoor heat exchanger (50) has a substantially reversed letter V-shaped cross section. An auxiliary piping where a refrigerant flows is connected to the indoor heat exchanger (50), which is provided so as to cover the cross-flow fan (71) from above. The lower casing (70) supports the cross-flow fan (71). Each part of the lower casing (70) is positioned at a height equal to or below the height of the top portion of the cross-flow fan (71).

Description

Description Air conditioner indoor unit and method of assembling air conditioner indoor unit (Technical field)

The present invention relates to an indoor unit for an air conditioner and a method for assembling an indoor unit for an air conditioner. (Background technology)

Some air conditioner indoor units are equipped with a heat exchanger and a blower fan, and perform indoor air conditioning by sending the heat-exchanged air into the room. A pipe through which the refrigerant flows is connected to the heat exchanger, and heat exchange is performed between the refrigerant flowing from the pipe to the heat exchanger and room air. The heat exchanger and the blower fan are often arranged on the support unit so that the heat exchanger covers the upper part of the blower fan. In addition, the indoor unit of the air conditioner has a support unit that supports the blower fan. Conventionally, the support unit (bottom frame assembly) often has a shape extending to above the blower fan (see JP-A-2002-195595).

If the support unit has a shape that extends above the blower fan as described above, it may be difficult to mount the heat exchanger. In other words, if the support unit has a shape that extends above the blower fan, the piping connected to the heat exchanger and the support unit should be used when mounting the heat exchanger so as to cover above the blower fan. It is easy to come into contact with the socket. This makes it difficult to attach the heat exchanger to the support unit.

(Disclosure of the Invention)

An object of the present invention is to provide an indoor unit of an air conditioner and a method of assembling the indoor unit of the air conditioner, which can facilitate installation of a heat exchanger.

The indoor unit of the air conditioner according to claim 1 includes a blower fan, a heat exchanger, and a support unit. The heat exchanger has a substantially inverted V-shaped cross-section, is connected to a pipe through which a refrigerant flows, and is arranged so as to cover the upper part of the blower fan. Support unit Supports the blower fan. Each part of the support unit is located at a level equal to or lower than the height of the top of the blower fan.

In this indoor unit of the air conditioner, each part of the support unit is located at a position equal to or lower than the height of the top of the blower fan. The heat exchanger is arranged so as to cover the upper part of the blower fan. For this reason, when mounting the heat exchanger, each part of the support unit is less likely to obstruct the pipes connected to the heat exchanger. As a result, in the indoor unit of the air conditioner, the installation of the heat exchanger can be facilitated.

The indoor unit of the air conditioner according to claim 2 is the air conditioner according to claim 1, wherein the heat exchanger is arranged so as to cover the front, upper, and rear sides of the blower fan. If the heat exchanger is arranged so as to surround the front, upper and rear sides of the blower fan, the distance between the heat exchanger and the blower fan becomes shorter, and the indoor unit of the air conditioner can be downsized. On the other hand, since the distance between the heat exchanger and the blower fan becomes shorter, the support unit that supports the blower fan tends to obstruct the pipe connected to the heat exchanger. However, in this indoor unit of the air conditioner, each part of the support unit is located at a position equal to or lower than the height of the top of the blower fan. For this reason, even when the heat exchanger is arranged so as to surround the front, upper and rear sides of the blower fan, each part of the support unit is connected to the heat exchanger when the heat exchanger is mounted. There is little risk of obstructing the piping. Therefore, the size of the indoor unit of the air conditioner can be reduced, and the heat exchanger can be easily attached.

An air conditioner according to claim 3 is the indoor unit of the air conditioner according to claim 1 or 2, wherein the heat exchanger is attached to a support unit to which a blower fan is attached.

In this indoor unit of the air conditioner, the heat exchanger is attached to the support unit with the blower fan attached, so before the heat exchanger was attached, the blower fan was attached to the support unit. It is in a state. When the blower fan is attached to the support unit, each part of the support unit is lower than the height of the top of the blower fan. Therefore, the unit in which the blower fan and the support unit are combined is downsized, and the unit can be easily transported. For this reason, in this air conditioner indoor unit, the unit carrying the blower fan and the support unit is transported. The feedability can be improved.

An air conditioner according to a fourth aspect is the indoor unit of the air conditioner according to the third aspect, further comprising an electrical component box. The electrical component box accommodates the electrical components and is supported by the support unit so that the height of the electrical component box is equal to or less than the height of the top of the blower fan. Then, the electrical component box is attached to the support unit.

In this air conditioner indoor unit, the support unit, the blower fan, and the electrical component box can be united. Even when the electrical component box is attached to the support unit, each part of the support unit and the electrical component box are less than the height of the top of the blower fan. Therefore, the size of the unit including the support unit, the blower fan, and the electrical component box is reduced, and the transport becomes easier. For this reason, in the indoor unit of the air conditioner, it is possible to improve the transportability of the unit including the blower fan, the electrical component box, and the support unit.

The indoor unit of the air conditioner according to claim 5 is the indoor unit of the air conditioner according to claim 4, wherein the blower fan has a cylindrical shape and is arranged such that the central axis is horizontal. And a drive unit. The driving device rotationally drives the blower fan and is arranged coaxially with the blower fan. The electrical component box is arranged so that the high-power components of the electrical components are aligned with the driving device in the axial direction.

Among the electrical components housed in the electrical component box, the high-power components are relatively large components. Therefore, in order to realize a compact configuration in which the electrical box is not higher than the height of the top of the blower fan, the arrangement of the high-power components is a problem.

However, in this indoor unit of the air conditioner, the blower fan, the driving device, and the high-power components are arranged in the axial direction. That is, the blower fan, the driving device, and the high-power components are arranged side by side in the horizontal direction. For this reason, the electrical component box is prevented from becoming large in the vertical direction. Thereby, in the indoor unit of the air conditioner, it is possible to easily realize a configuration in which the electrical box is equal to or less than the height of the top of the blower fan. The indoor unit of the air conditioner according to claim 6 is the indoor unit of the air conditioner according to claim 4, further comprising a driving device that rotationally drives the blower fan. The support unit supports the blower fan, the electrical component box, and the driving device from below in a front view, and has a flat lower surface. In this air conditioner indoor unit, the support unit supports the blower fan, the electrical component box, and the drive device from below. Therefore, each component can be conveyed collectively with the blower fan, the electrical component box, and the driving device placed on the support unit. In addition, since the lower surface is formed flat, there is a sense of stability even when the blower fan, the electrical component box, and the driving device are mounted, and transport becomes easier.

A method for assembling an indoor unit of an air conditioner according to claim 7 includes a first step, a second step, and a third step. The first step is to attach the blower fan to the support unit where each part of the fan is supported at a position equal to or lower than the height of the top of the blower fan. In the second step, after the first step, a heat exchanger connected to the pipe through which the refrigerant flows and arranged so as to cover the upper portion of the blower fan is attached. In the third step, after the second step, a rear member that covers the rear side of the heat exchanger and forms a rear air flow path is attached.

According to this method of assembling the indoor unit of the air conditioner, since each part of the support unit is located at a position equal to or lower than the height of the top of the blower fan, each part of the support unit is attached to the heat exchanger when the heat exchanger is mounted. There is little risk of obstructing the connected piping. Further, since the rear member is attached after the heat exchanger is attached first, there is little possibility that the rear member obstructs a pipe connected to the heat exchanger. For this reason, in the method of assembling the indoor unit of the air conditioner, the installation of the heat exchanger can be facilitated. (Brief description of drawings)

Fig. 1 is an external view of the air conditioner.

FIG. 2 is a configuration diagram of a refrigerant circuit.

FIG. 3 (a) is a front view of the indoor unit.

FIG. 3 (b) is a right side view of the indoor unit.

FIG. 4 is a right side view of the indoor unit with the upper casing removed.

FIG. 5 is a right side sectional view of the indoor unit.

FIG. 6 is a top view of the right side portion of the indoor unit with the upper casing removed.

FIG. 7 is a side view of the lower unit.

FIG. 8 is a top view of the right part of the lower unit. FIG. 9 is a right side sectional view of the lower unit.

FIG. 10 is a flowchart showing a method of assembling the indoor unit.

FIG. 11 (a) is a schematic view of the right side of the indoor unit.

FIG. 11 (b) is a schematic diagram of a right side surface of an indoor unit according to another embodiment.

(Best mode for carrying out the invention)

[Overall configuration of air conditioner]

FIG. 1 shows an appearance of an air conditioner 1 to which an embodiment of the present invention is adopted.

The air conditioner 1 includes an indoor unit 2 mounted on an indoor wall or the like, and an outdoor unit 3 installed outdoors.

An indoor heat exchanger 50 is housed in the indoor unit 2, an outdoor heat exchanger 30 is housed in the outdoor unit 3, and each heat exchanger 30, 50 is connected by a refrigerant pipe 4. This constitutes a refrigerant circuit.

[Schematic configuration of refrigerant circuit of air conditioner]

Fig. 2 shows the configuration of the refrigerant circuit of the air conditioner 1. This refrigerant circuit mainly includes an indoor heat exchanger 50, an accumulator 31, a compressor 32, a four-way switching valve 33, an outdoor heat exchanger 30, and an electric expansion valve 34.

The indoor heat exchanger 50 provided in the indoor unit 2 performs heat exchange with the contacting air. The indoor unit 2 is provided with a cross flow fan 71 for sucking indoor air, passing the indoor air through the indoor heat exchanger 50, and discharging the air after the heat exchange into the room. The cross flow fan 71 is formed in a long and thin cylindrical shape, and is arranged so that the central axis is parallel to the horizontal direction. The cross flow fan 71 is driven to rotate by an indoor fan motor 72 provided in the indoor unit 2. The detailed configuration of the indoor unit 2 will be described later.

The outdoor unit 3 includes a compressor 32, a four-way switching valve 33 connected to the discharge side of the compressor 32, an accumulator 31 connected to the suction side of the compressor 32, and a four-way switching. An outdoor heat exchanger 30 connected to the valve 33 and an electric expansion valve 34 connected to the outdoor heat exchanger 30 are provided. The electric expansion valve 34 is connected to a pipe 41 via a filter 35 and a liquid shutoff valve 36, and the indoor heat exchanger 50 is connected via the pipe 41. Connected with the end. The four-way switching valve 33 is connected to a pipe 42 via a gas shutoff valve 37, and is connected to the other end of the indoor heat exchanger 50 via the pipe 42. The pipes 41 and 42 correspond to the refrigerant pipe 4 in FIG. In addition, the outdoor unit 3 is provided with a propeller fan 38 for discharging the air after the heat exchange in the outdoor heat exchanger 30 to the outside. The propeller fan 38 is driven to rotate by an outdoor fan motor 39.

[Configuration of indoor unit]

Fig. 3 (a) shows a front view of the indoor unit 2, and Fig. 3 (b) shows a side view of the indoor unit 2. The indoor unit 2 has a shape that is long in the horizontal direction when viewed from the front, and has a two-tone color in which colors are vertically divided when viewed from the front and the side.

The indoor unit 2 mainly includes an upper casing 6, a lower unit 7, and an indoor heat exchanger unit 5 housed inside the indoor unit 2. The upper casing 6 covers the upper part of the indoor unit 2. The lower unit 7 constitutes the lower part of the indoor unit 2. The upper casing 6 and the lower unit 7 are formed separately, and a boundary between the upper casing 6 and a part of the lower unit 7 appears as a horizontal line in the appearance of the indoor unit 2. Also, the upper casing 6 and a part of the lower unit 7 have different colors, and a single-toned color with a different color vertically above and below the horizontal line that is the boundary between the upper casing 6 and the lower unit 7. ing.

Hereinafter, each configuration of the indoor unit 2 will be described.

As shown in FIG. 4, the indoor heat exchanger unit 5 includes an indoor heat exchanger 50, an auxiliary pipe 51, an auxiliary support member 52, and the like. FIG. 4 is a side view of the indoor unit 2 with the upper casing 6 removed.

FIG. 5 shows a side cross-sectional view of the indoor unit 2.

The indoor heat exchanger 50 is attached so as to surround the front, upper and rear sides of the cross flow fan 71, and the cross flow fan 71 rotates to suck air from the suction ports 61, 611. The crossed air is passed through the cross-flow fan 71 to exchange heat with the refrigerant passing through the heat transfer tube. The indoor heat exchanger 50 is composed of the first indoor heat exchanger 50a, the second indoor heat exchanger 50b, and the third indoor heat exchanger. It is divided into four parts, 50c and the fourth indoor heat exchanger 50d. The indoor heat exchanger 50 is formed by joining the indoor heat exchangers 50a, 50b, 50c, and 50d, respectively, so that both ends are bent downward in a side view. It is formed so as to have a U-shaped cross section.

Each of the indoor heat exchangers 50a, 50b, 50c, 50d has a plate shape that is long in the horizontal direction. Each indoor heat exchanger 50 a, 50 b, 50 c, 50 d is composed of a heat tube bent multiple times at both ends and a plurality of strip-shaped fins through which the heat transfer tube passes. Have been. The heat transfer tubes are folded back by U-shaped heat transfer tubes at both ends of each indoor heat exchanger 50a, 50b, 50c, 50d.

The first indoor heat exchanger 50a has an upper end inclined toward the front of the indoor unit 2, and is arranged so as to cover the upper part from the upper center to the lower rear part of the fan 71 with a mouthpiece. The upper end of the second indoor heat exchanger 50b is inclined rearward of the indoor unit 2, and is disposed in front of the first indoor heat exchanger 50a. The upper end of the second indoor heat exchanger 50b is joined to the upper end of the first indoor heat exchanger 50a, and the first indoor heat exchanger 50a and the second indoor heat exchanger 50b are connected to each other. Are combined in an inverted V-shape in side view. The two indoor heat exchangers 50b are arranged so as to cover from the upper center to the upper front side of the cross flow fan 71.

The third indoor heat exchanger 50c is arranged below the second indoor heat exchanger 50b so as to cover the front of the cross flow fan 71. The upper end of the third indoor heat exchanger 50c is joined at an angle to the lower end of the second indoor heat exchanger 5Ob, and the third indoor heat exchanger 50G and the second indoor heat exchanger 5Ob are connected at an angle. 0b forms an obtuse angle. The third indoor heat exchanger 50 c is parallel to the height direction, that is, the vertical direction, and is perpendicular to the lower unit 7 that covers the horizontal plane below the indoor heat exchanger 50. . The lower end of the third indoor heat exchanger 50c is the lower end of the indoor heat exchanger 50c, and the lower end of the third indoor heat exchanger 50c, that is, the lower end on the front side of the indoor heat exchanger 50c. Is located at substantially the same height as the center axis of the cross flow fan 71.

The fourth indoor heat exchanger 50d is arranged below the first indoor heat exchanger 50a so as to cover the rear of the cross flow fan 71. The upper end of the fourth indoor heat exchanger 50d is joined at an angle to the lower end of the first indoor heat exchanger 50a, An obtuse angle is formed by the heat exchanger 50d and the first indoor heat exchanger 50a. The fourth indoor heat exchanger 50d is parallel to the height direction, and is perpendicular to the lower unit 7 that covers a horizontal plane below the indoor heat exchanger 50. The lower end of the fourth indoor heat exchanger 50d is the lower end on the rear side of the indoor heat exchanger 50, and the lower end of the fourth indoor heat exchanger 50d, that is, the indoor heat exchanger 5 The lower rear end of 0 is located at substantially the same I height as the center axis of the cross flow fan 71.

The third indoor heat exchanger 50c and the fourth indoor heat exchanger 50d have the same length in the height direction, and the third indoor heat exchanger 50c and the fourth indoor heat exchanger The upper and lower ends of 50 d are located at the same height. Therefore, the lower end on the front side and the lower end on the rear side of the indoor heat exchanger 50 are at the same height, and are located at substantially the same height as the center axis of the cross flow fan 71. In addition, the front lower end and the rear lower end of the indoor heat exchanger 50 extend vertically downward from the front and rear lower ends of the inverted V-shaped portion to substantially the same height as the center axis of the cross flow fan 71.

The first indoor heat exchanger 50 a, the second indoor heat exchanger 50 b, the third indoor heat exchanger 50 c, and the fourth indoor heat exchanger 50 d are both end portions (in the left-right direction in front view). Are fixed to each other by a fixing plate provided at the (end), and are integrally joined to form the indoor heat exchanger 50. The indoor heat exchanger 50 includes an inverted V-shaped portion formed by the first indoor heat exchanger 50a and the second indoor heat exchanger 50b, and a first indoor heat exchanger 50a. The second indoor heat exchanger 50b has a cross-sectional shape in which a linear portion extending downward from the lower end of the second indoor heat exchanger 50b is combined. The indoor heat exchanger 50 has a cross-sectional shape symmetrical to the front and rear with respect to a straight line parallel to the vertical direction passing through the inverted V-shaped vertex, and the first indoor heat exchanger 50a and the second indoor heat exchanger The heat exchanger 5 Ob and the third indoor heat exchanger 50c and the fourth indoor heat exchanger 50d are symmetrical back and forth. The indoor heat exchanger 50 is formed in a cross-sectional shape including the inverted V-shape symmetrical in the front-back direction as described above in a side view, but has a shape that is long in a lateral direction in a front view.

The auxiliary pipe 51 connects the indoor heat exchanger 50 with the refrigerant pipe 4 outside the indoor unit 2, and the refrigerant flowing between the indoor heat exchanger 50 and the outdoor heat exchanger 30. Flows. The auxiliary pipe 51 is, as shown in FIGS. 4 and 6, a heat transfer pipe of the indoor heat exchanger 50. It is connected to the. FIG. 6 is a top view of the right side portion of the indoor unit 2 from which the upper casing 6 has been removed. The auxiliary pipe 51 projects from the right side of the indoor heat exchanger 50 and is routed in the space on the right side of the indoor heat exchanger 50. The auxiliary pipe 51 protrudes from the right side of the indoor heat exchanger 50 and is bent toward the rear side of the indoor unit 2. A plurality of auxiliary pipes 51 are put together and covered with a protective tube 53. It has been. The combined auxiliary pipe 51 extends downward in the space on the right side of the indoor heat exchanger 50 along the back side of the indoor unit 2, and in the lower space on the rear side of the indoor unit 2 on the left side of the indoor unit 2. And is connected to the refrigerant pipe 4.

The auxiliary support members 52 are provided near both side surfaces of the indoor heat exchanger 50, and support the indoor heat exchanger 50 from the inside as shown in FIG. The indoor heat exchanger unit 5 has an inverted V-shape and is open at the bottom, so that the upper part of the unit heat exchanger unit 5 is attached to the lower unit unit to which the cross flow fan 71 and the indoor fan motor 72 are attached. And is supported by the lower unit 7 via the auxiliary support member 52.

The upper casing 6 forms the upper part of the indoor unit 2 as shown in FIGS. 3 and 5, and is composed of an upper front part 60, a top part 61, and upper side parts 62, 63. ing.

The upper front part 60 covers the front upper part of the indoor unit 2 and covers the front of the indoor heat exchanger 50. The upper front surface portion 60 is formed substantially flat, and a step is provided in a part thereof. On the upper surface of this step, there is provided a front-side suction port 61 composed of a slit-shaped opening that is long in the longitudinal direction of the indoor unit 2. Front suction port 6 01 is an indoor unit

2 is provided upward.

The top surface part 61 covers the top surface of the indoor unit 2 and covers the upper part of the indoor heat exchanger 50. The top surface portion 61 is provided with a top surface suction port 611 composed of a plurality of slit-shaped openings. The top surface suction port 61 1 is provided from the front side to the rear side of the top surface portion 61, and has a larger suction area than the front surface suction port 61. For this reason, sufficient air is sucked in from the rear side of the ceiling of the indoor unit 2.

The upper side portions 62, 63 cover the upper side portion of the indoor unit 2, and the indoor heat exchanger 50 Is covering the sides. The upper side portions 62 and 63 have an upper right side portion 62 and an upper left side portion 63, and the upper right side portion 62 is disposed on the right side of the indoor heat exchanger 50 when viewed from the front. The side surface portion 63 is disposed on the left side of the indoor heat exchanger 50.

The lower end of the upper casing 6 is formed horizontally, and the upper casing 6 is placed on the lower unit 7, so that the boundary between the upper casing 6 and the lower unit 7 becomes a horizontal line, and the indoor unit 2 Appears in front and side views

The lower unit 7 constitutes a lower portion of the indoor unit 2, and includes a lower casing 70, a cross flow fan 71, an indoor fan motor 72, an electrical component box 73, etc., as shown in FIGS. It is modularized and configured.

[Lower casing]

The lower casing 70 is composed of a lower front part 74, a bottom part 75, a lower side part 76, 77, a support part 78, etc., and has a color different from that of the upper casing 6. You.

The lower front part 74 is a part that appears in the field of view as the lower front part of the indoor unit 2 when viewed from the front, and is arranged such that the upper end is inclined toward the front side of the indoor unit 2. As shown in FIG. 3 (a), the upper end of the lower front part 74 is formed horizontally, and forms a horizontal boundary with the lower end of the upper casing 6. In addition, the lower front part 74 is provided with an outlet 714 formed of an opening along the longitudinal direction of the indoor unit 2. As shown in FIG. 5, the outlet 741 communicates with the space inside the support portion 78 in which the cross flow fan 71 is housed, and the air flow generated by the cross flow fan 71 Blows out into the room through the outlet 7 4 1. Further, the outlet 741 is provided with a horizontal flap 742 for guiding the air blown into the room. The horizontal flap 742 is rotatably provided around an axis parallel to the longitudinal direction of the indoor unit 2, and is driven to rotate by a flap motor (not shown), so that an air outlet is provided. 7 4 1 can be opened and closed.

The bottom surface portion 75 covers the bottom surface of the indoor unit 2 and is formed flat. The bottom part 75 is arranged horizontally, and the support part 78 is arranged thereon. The lower side surfaces 76 and 77 are portions that appear in the field of view as the lower side surface of the indoor unit 2 when viewed from the side, and cover the lower side surface of the indoor unit 2. The lower side portions 76 and 77 include a lower right side portion 76 and a lower left side portion 77. The lower right side portion 76 is disposed on the right side of the indoor unit 2 in a front view, and the lower left side portion 7 7 is located on the left side of the indoor heat exchanger 50. Also, the upper ends of the lower side surfaces 76 and 77 are formed horizontally like the lower front surface 74. When the upper casing 6 is placed on the lower unit 7, the lower end of the upper case 6 and the lower front part 74 of the lower unit 7 and the upper ends of the lower side parts 76, 77 match so that a horizontal boundary is formed. A line is configured.

The support portion 78 is surrounded by a lower front portion 74, a bottom portion 75, and lower side portions 76, 77. The upper surface of the support portion 78 is formed by a lower front portion 74 and a lower side portion 76. , 77 located above the upper end of 7. A cross flow fan 71, an indoor fan motor 72, an electrical component box 73, an indoor heat exchanger unit 5, etc. are attached to the support section 78 from above, and a cross flow fan 71, an indoor fan motor 72 The electrical component box 73 and the indoor heat exchanger unit 5 are supported from below.

The support portion 78 supports the indoor heat exchanger 50 via the auxiliary support member 52 of the indoor heat exchanger unit 5. The upper surface of the support portion 78 is substantially as high as the center axis of the cross flow fan. As shown in FIG. 7, drain pans 78 1, 78 2 and a fan accommodating portion 787 are provided on the upper surface of the support portion 78.

The drain pans 781, 782 receive water droplets generated on the surface of the indoor heat exchanger 50 during heat exchange, and are formed by concave members that are recessed downward from the upper surface of the support portion 78. ing. These drain pans 78 1 and 782 include a front drain pan 781 and a rear drain pan 782. The front drain pan 781, as shown in FIG. 5, is connected to the third indoor heat exchanger 50c. It is arranged below, that is, below the lower front end of the indoor heat exchanger 50. The rear drain pan 782 is arranged below the fourth indoor heat exchanger 50d, that is, the lower rear end of the indoor heat exchanger 50. The front drain pan 781 and the rear drain pan 782 are disposed in front of and behind the cross mouth opening fan 71. The front drain pan 7 8 1 and the rear drain pan 7 8 2 are located at approximately the same height, and the bottom surface of the front drain pan 7 8 1 and the rear drain pan 7 8 2 is at the height of the center axis of the cross flow fan 7 1. Although it is at a lower position, it is located close to the lower end of the indoor heat exchanger 50. ing. The front drain pan 781 and the rear drain pan 782 each have a bottom surface for receiving drain water slightly inclined to the right side of the indoor unit 2. As shown in FIG. 8, a communication portion 783 connecting the front drain pan 781 and the rear drain pan 782 is provided on the right side of the support portion 78, and the communication portion 783 Is provided with a drain hole 784 penetrating downward. As shown in FIG. 9, the drain hole 784 communicates with the inside of a drain hose 785 for discharging drain water from the drain pans 781 and 782 to the outside. Drain water dropped from the indoor heat exchanger 50 is received by the front drain pan 781 and the rear drain pan 782, collected at the communication portion 783, and drained from the drain hole 784 to the drain hose 7885. Is discharged outside the aircraft.

The fan accommodating section 787 is a section for accommodating the cross flow fan 71 and the indoor fan motor 72, and is provided near the center of the upper surface of the supporting section 78. The fan accommodating portion 787 is formed of a member that is recessed in a semi-cylindrical shape downward from the upper surface of the support portion 78, and accommodates the lower half of the cross flow fan 71 and the indoor fan motor 72. Further, inside the support portion 78, an air path is provided for communicating the housed cross-flow fan 71 with the outlet 741.

Further, the support portion 78 has a tongue portion 786 projecting upward from the upper surface of the support portion 78 between the rear drain pan 782 and the cross flow fan 71. The tongue 786 covers the rear of the cross flow fan 71, and the upper end of the tongue 786 is located at a height slightly lower than the top of the cross mouth-to-fan 71.

As described above, the front drain pan 781, the rear drain pan 782, and the fan accommodating section 787 are provided on the upper surface of the support section 78, and the tongue section 7886 protrudes upward. The other portion of the upper surface of 78 is formed substantially flat and horizontal, and is located at substantially the same height as the center line of cross flow fan 71.

As described above, the highest part of the support part 78 is the tongue part 78 6, but the tongue part 78 6 is located below the height of the top part of the cross flow fan 71 . The upper surface of the support portion 78 is located above the upper ends of the lower front surface portion 74 and the lower side surface portions 76, 77. For this reason, each part of the lower casing 70 including the support part 78 is lower than the height of the top part of the cross flow fan 71. The back side of the upper surface of the support portion 78 is also lower than the height of the cross flow fan 71, but the portion between the top surface portion 61 of the upper casing 6 and the back side of the upper surface of the support portion 78 is provided. Is closed by a mounting plate 8 attached to the indoor wall (see Fig. 5). The installation plate 8 has substantially the same length as the indoor heat exchanger 50 in the longitudinal direction of the indoor unit 2, and covers the rear side of the indoor heat exchanger 50. The mounting plate 8 covers the rear side of the indoor unit 2 to form an air flow path through which air to be heat-exchanged in the indoor heat exchanger 50 passes together with the upper casing 6, and particularly the rear air flow. Forming a road.

[Cross flow fan]

The cross flow fan 71 is formed in an elongated cylindrical shape, and is arranged so that the central axis is parallel to the horizontal direction. Blades are provided on the peripheral surface of the cross-flow fan 71, and the cross-flow fan 71 rotates around a central axis to generate an air flow. This air flow is a flow of air that is taken in from the front suction port 61 and the top surface suction port 61 1, passes through the indoor heat exchanger 50 and blows out from the outlet port 74 1 to the room. The cross flow fan 71 is located substantially at the center of the indoor unit 2 in a side view. The cross flow fan 71 is supported by the support portion 78, and the upper half of the supported cross flow fan 71 protrudes upward from the upper surface of the support portion 78.

[Indoor fan motor]

The indoor fan motor 72 drives the cross flow fan 71 to rotate around the central axis. The indoor fan motor 72 has a thin cylindrical shape having substantially the same diameter as the cross-opening fan 71. As shown in FIG. 8, the indoor fan motor 72 is disposed coaxially with the fan 71 on the right side of the cross flow fan 71, and the indoor fan motor 72 is mounted on the support portion 78. When installed, the heights of the tops of the indoor fan motor 72 and the cross flow fan 71 are substantially the same (see FIG. 7).

[Electric component box]

The electrical component box 73 houses a control board 731, which controls the operation of the indoor unit 2, as shown in FIGS. The electrical component box 73 has a rectangular parallelepiped box shape, is disposed between the lower right side surface portion 76 of the lower casing 70 and the support portion 78, and It is located on the right side of the internal heat exchanger unit 5. The electrical component box 73 is mounted and supported on the right side of the support portion 78 on the right side of the indoor fan motor 72, and is supported before the indoor heat exchanger unit 5 is mounted on the lower unit 7. Can be attached to parts 7 and 8. Further, the electrical component box 73 is disposed closer to the front side, and the space behind the electrical component box 73 is a space through which the auxiliary piping 51 of the indoor heat exchanger unit 5 described above passes. The electrical component box 73 is arranged such that, among the control components mounted on the control board 731, high-power components 7332 such as large-capacity capacitors and power transistors are aligned with the indoor fan motor 72 in the axial direction. The indoor fan motor 72 and the electrical component box 73 are arranged so as to overlap in a side view. When supported by the lower casing 70, the upper surface of the electrical component box 73 is positioned at approximately the same height as the top of the indoor fan motor 72, that is, the top of the cross flow fan 71. I have. .

Thus, all parts of the indoor fan motor 72, the electrical component box 73, and the lower casing 70 are located at the top of the cross flow fan 71 supported by the lower casing 70. The lower unit 7 is located below the height, and has a relatively small size in the height direction as a whole.

[Assembly method of indoor unit]

Next, a method of assembling the indoor unit 2 will be described.

The assembling of the indoor unit 2 mainly consists of assembling the lower unit 7 S1, installing the indoor heat exchanger unit 5 S2, installing the upper casing 6 S3, and installing the mounting plate 8 S4. Is done.

In the assembly S1 of the lower unit 7, the cross flow fan 71, the indoor fan motor 72, and the electrical component box 73 are attached to the lower casing 70. The lower casing 70 uses the same color material as the indoor unit 2 of the mass-produced air conditioner 1, and the lower casing 70 has the same color. The bottom surface 75 of the lower casing 70 is formed flat. Therefore, in the assembling work, other components are mounted on the lower casing 70 as a base. The cross flow fan 71 and the indoor fan motor 72 are mounted from above on the fan housing 787 near the center of the support 78 of the lower casing 70, and The lower half of one fan 71 and the indoor fan motor 72 is housed in the fan housing 787. The electrical component box 73 is attached to the right side of the support part 78.

Since the lower unit 7 is modularized, the assembly S1 of the lower unit 7 can be mass-produced separately from other processes.

In the installation S2 of the indoor heat exchanger unit 5, the indoor heat exchanger unit 5 is mounted on the lower unit 7 assembled as described above. The indoor heat exchanger unit 5 is open at the bottom, and is mounted over the lower unit 7 so as to cover the upper half of the cross flow fan 71 protruding from the upper surface of the support unit 78. In the mounting S3 of the upper casing 6, the upper casing 6 is mounted so as to cover the lower unit 7 from above. The upper casing 6 is provided in a plurality of types having different colors, and the upper casing 6 selected from the various types is attached to the lower unit 7. When the upper casing 6 is attached to the lower unit, the lower end of the upper casing 6 and the upper ends of the lower front surface 74 and the lower side surfaces 76, 77 of the lower casing 70 are aligned. When the color of the selected upper casing 6 is different from the color of the lower casing 70, the single-toned design in which the upper and lower colors are separated as described above appears on the indoor unit 2.

Attachment of the installation plate 8 At S4, the installation plate 8 is attached to the back of the indoor unit 2. The installation plate 8 is previously attached to the indoor wall surface, and the installation unit 8 is attached to the rear surface of the indoor unit 2 by attaching the indoor unit 2 assembled as described above to the wall surface. The mounting plate 8 covers the rear side of the indoor heat exchanger 50 and covers a portion from the rear side of the upper surface of the support portion 78 to the top surface portion 61.

〔Characteristic〕

[1]

In the indoor unit 2 of the air conditioner 1, the lower casing 70 is located at a position equal to or lower than the height of the top portion of the cross flap fan 71. Therefore, when attaching the indoor heat exchanger unit 5 to the lower unit 7, the lower casing 70 does not hinder the auxiliary pipe 51 connected to the indoor heat exchanger 50, and the indoor heat exchanger unit 5 Is easy to install.

[2] The indoor heat exchanger 50 provided in the indoor unit 2 of the air conditioner 1 is arranged so as to surround the front, the upper side, and the rear side of the cross flow fan 71, and the position of the indoor heat exchanger 50 is relatively low. I'm familiar. For this reason, the size of the indoor unit 2 in the height direction is reduced.

In addition, when the indoor unit of the air conditioner is downsized, other components of the indoor unit are likely to hinder the auxiliary piping, so that the installation of the indoor heat exchanger unit 5 is facilitated as described above. The present invention is particularly effective.

[3]

In the indoor unit 2 of the air conditioner 1, the lower unit 7 is modularized. Therefore, it is possible to perform the assembly S1 of the lower unit 7 in a place different from the final assembly of the indoor unit 2. Then, in this case, the lower unit 7 assembled in advance needs to be transported to the place where the indoor unit 2 is assembled.

In the indoor unit 2 of the air conditioner 1, the cross flow fan 71, the indoor fan motor 72, and the electrical component box 73 can be conveyed together in a state of being stacked on the lower casing 70. Each part of the lower unit 7 is equal to or less than the height of the top of the cross flow fan 71, and the lower unit 7 has a relatively small shape in the height direction as a whole. For this reason, space saving during transport is realized, and transport of the lower unit 7 is facilitated.

In the indoor unit 2 of the air conditioner 1, the lower unit 7 is modularized. The lower unit 7 includes electrical components such as a control board 731, an indoor fan motor 72, and a flap motor (not shown). Z), the electrical system can be inspected after the assembly S1 of the lower unit 7 is completed.

[ Four ]

In the indoor unit 2 of the air conditioner 1, the cross flow fan 71, the indoor fan motor 72, and the high-power components 732 are arranged side by side in the axial direction parallel to the horizontal direction. For this reason, the electrical component box 73 is prevented from becoming large in the vertical direction to accommodate the strong electrical components 732. Thus, in the indoor unit 2 of the air conditioner 1, a configuration in which the electrical box 73 is not more than the height of the top of the crossflow fan 71 despite having a simple rectangular parallelepiped shape is provided. It is easily possible. [ Five ]

In the indoor unit 2 of the air conditioner 1, the lower casing 70 supports the cross flow fan 71, the indoor fan motor 72, the electrical component box 73, and the like from below. Therefore, the cross-flow fan 71, the indoor fan motor 72, and the electrical component box 73 can be conveyed together on the lower casing. In addition, since the lower surface of the lower casing 70 is formed flat, there is a sense of stability even when the lower casing 70 has the crossover fan 7.1, the indoor fan motor 72, and the electrical component box 73 mounted thereon. Re-emission is easy.

[6]

In the method of assembling the indoor unit 2 of the air conditioner 1, since each part of the lower unit 7 is located at a position equal to or lower than the height of the top part of the cross flow fan 71, when the indoor heat exchanger unit 5 is attached. However, each part of the lower unit 7 does not hinder the auxiliary pipe 51 connected to the indoor heat exchanger 50. In addition, since the installation plate 8 is attached to the rear side of the indoor unit 2 after the indoor heat exchanger unit 5 is attached first, when the indoor heat exchanger unit 5 is attached, the indoor unit 2 There are no components on the back that hinder the installation. Therefore, in the method of assembling the indoor unit 2 of the air conditioner 1, the installation of the indoor heat exchanger unit 5 is facilitated.

[Other embodiments]

[1]

In the above embodiment, the upper surface of the support portion 78 of the lower unit 7 is formed to be substantially flat, but the upper surface of the support portion 78 does not necessarily have to be flat. It is only necessary that the height be equal to or less than the height of the cross flow fan 71. In addition, the height of other portions of the lower unit 7, such as the lower casing 70, as well as the support portion 78, may be equal to or less than the height of the top portion of the cross flow fan 71.

[2]

In the above embodiment, the electrical component box 73 is attached to the support portion 78 before the indoor heat exchanger unit 5 is attached to the lower unit 7, but the electrical component box 73 is a module of the lower unit 7. Otherwise, the electrical component box 73 may be installed after the indoor heat exchanger unit 5 is installed. [3]

In the above embodiment, the rear side of the indoor heat exchanger 50 is covered with the installation plate 8 attached to the indoor wall, but another member different from the installation plate 8 is the indoor heat exchanger unit 5. It may be attached to the rear side of the indoor heat exchanger 50 after the installation S2.

[ Four ]

In the above embodiment, the indoor heat exchanger 50 has a cross-sectional shape having an inverted V-shaped portion and a straight portion extending downward from the lower end thereof, but only the inverted V-shaped portion. May have the following cross-sectional shape. Also in this case, the indoor unit 2 can be reduced in size by arranging the indoor heat exchanger 50 at a relatively low position so as to cover the front, the upper side, and the rear side of the cross door opening fan 71. .

[ Five ]

In the above embodiment, the colors of the upper casing 6 and the lower casing 70 are different, and the indoor unit 2 has a two-tone color. However, the upper casing 6 and the lower casing 70 may have the same color.

[6]

In the above embodiment, as shown in FIG. 11 (a), the indoor unit 2 is vertically divided into an upper casing 6 and a lower unit 7 in appearance, but as shown in FIG. 11 (b). The upper casing 6b may cover the lower unit 7 like the indoor unit 2b shown. In the indoor unit 2b, the upper casing 6b covers the front, upper, lower, and both side surfaces of the indoor unit 2b, and covers the front, lower surface, and both side surfaces of the lower unit 7. Even with such an indoor unit 2b, the effect of facilitating the installation of the indoor heat exchanger unit 5 and the effect of facilitating the transfer of the lower unit 7 can be exhibited similarly. The upper casing 6b may cover only the front surface and the lower surface of the lower unit 7 without covering both side surfaces of the lower unit 7.

(Industrial applicability)

If the indoor unit of the air conditioner according to the present invention is used, there is little possibility that each part of the support unit will obstruct the pipes connected to the heat exchanger when the heat exchanger is mounted. The installation of the container can be facilitated.

Claims

The scope of the claims

1 ■

Blower fan (71)

A heat exchanger (50) having a substantially inverted V-shaped cross-section, connected to a pipe (51) through which a refrigerant flows, and arranged to cover an upper portion of the blower fan (71); A support unit (70) for supporting the fan (71);

With

Each part of the support unit (70) is located at a position equal to or lower than the height of the top of the blower fan (71).

Indoor units (2) of air conditioners (1).

2.

The heat exchanger (50) is arranged so as to cover the front, the upper side, and the rear side of the blower fan (71).

The indoor unit (2) of the air conditioner (1) according to claim 1.

3.

The heat exchanger (50) is attached to the support unit (70) with the blower fan (71) attached.

The indoor unit (2) of the air conditioner (1) according to claim 1 or 2.

Four.

An electrical component box (73) that accommodates electrical components and is supported by the support unit (70) so as to be no higher than the height of the top of the blower fan (71); The indoor unit (2) of the air conditioner (1) according to claim 3, wherein the air conditioner is attached to the support unit (70).

Five.

The blower fan (71) has a cylindrical shape, and is arranged so that the central axis is horizontal.

A driving device (72) that rotatably drives the blower fan (71) and is arranged coaxially with the blower fan (71); The electrical component box (73) is arranged so that a strong electrical component (732) among the electrical components is axially aligned with the drive device (72).

The indoor unit (2) of the air conditioner (1) according to claim 4.

6.

The apparatus further includes a driving device (72) that rotationally drives the blower fan (71), wherein the support unit (70) includes the blower fan (71), the electrical component box (7).

3) and the driving device (72) are supported from below in a front view, and the lower surface is formed flat.

The indoor unit (2) of the air conditioner (1) according to claim 4. A first step of attaching the blower fan (71) to a support unit (70) in which each part of the blower fan (71) is at a position equal to or lower than the height of the top of the blower fan (71) while supporting the blower fan (71); (S 1)

After the first step (S 1), a pipe (51) through which a refrigerant flows is connected, and a heat exchanger (50) arranged to cover the upper part of the blower fan (71) is mounted. Two steps (S2) and

After the second step (S2), a third step (S4) for attaching a back member (8) that covers the back side of the heat exchanger (50) and forms a back side air flow path. How to assemble the indoor unit (2) of the harmonizer (1).