JP2023071328A - indoor unit - Google Patents

Abstract

To provide a space-saving indoor unit capable of achieving both of securing a piping space and highly efficient air conditioning.SOLUTION: In an indoor unit 100, a housing 101 is disposed, and the housing 101 is divided into a heat exchanger chamber 107 and a blower chamber 105 by a partitioning plate 103. At least one side face 101c of the housing 101 includes a side plate 151 and a substrate supporting plate 131 mounted with a substrate 133 and serving as a bottom surface of an electric component box 130. The substrate supporting plate 131 is positioned on an inner side of the housing 101 with respect to the side plate 151 and extends to a heat exchanger chamber 107 side with respect to the partitioning plate 103.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to indoor units.

Patent Literature 1 discloses an indoor unit of an air conditioner in which an electrical box is built in a housing. This indoor unit includes a partition plate that divides the housing into front and rear parts of the heat exchanger chamber and the blower chamber, and a second partition plate that is perpendicular to the partition plate and divides the housing into left and right sides. The second partition plate is fixed to the end of the heat exchanger to partition the electric component room in the fan room. An electrical component box is provided in the electrical component room. Also, the second partition partitions the piping chamber into the heat exchanger chamber.

JP 2012-141069 A

To provide an indoor unit which is space-saving and achieves both securing of piping space and highly efficient air conditioning.

An indoor unit according to the present disclosure includes a housing, and the housing is partitioned into a heat exchanger chamber and a blower chamber by a partition plate. At least one side surface of the housing includes a side plate and a substrate. and a substrate support plate to which is attached and serves as the bottom surface of the electrical box, wherein the substrate support plate is positioned inside the housing relative to the side plate and closer to the heat exchanger chamber than the partition plate. stretched to

The indoor unit according to the present disclosure is space-saving and can achieve both securing of piping space and highly efficient air conditioning.

Fig. 2 is a front perspective view of the indoor unit according to Embodiment 1; Fig. 2 is a perspective view of the indoor unit according to Embodiment 1 as seen from the upper left Plan view of the vicinity of the left side wall of the indoor unit according to Embodiment 1 FIG. 4 is a perspective view of the substrate support plate according to Embodiment 1 as seen from the rear right side; Front view of left side wall in Embodiment 1 Fig. 2 is a perspective view of the side plate according to Embodiment 1 as seen from the front left side; Fig. 2 is a perspective view of the indoor unit according to Embodiment 1 as seen from the front left The perspective view of the front panel according to Embodiment 1 as seen from the rear Front view of the drain pump support plate according to the second embodiment Perspective view around the drain pump support plate in the second embodiment

(Knowledge, etc. on which this disclosure is based)
At the time when the inventors came up with the present disclosure, the technical field of indoor units was in a situation where miniaturization of indoor units was required. Therefore, in the industry, there have been cases where an electrical box is incorporated in a housing of an indoor unit in order to reduce the width of the indoor unit (for example, Patent Document 1). Under such circumstances, the inventors came up with the idea of reducing the width of the indoor unit in the front-rear direction in order to achieve further space saving. In order to realize the idea, the inventors discovered that there is a problem that the width dimensions of the electrical component room and the piping room are both determined by the second partition plate. In the prior art, if the piping room is enlarged in order to secure the piping space, the electric equipment room is also enlarged, so the blower room is compressed and the efficiency of air conditioning is lowered. Also, if the electrical component room is made smaller in order to widen the blower room, the piping room becomes smaller, making it difficult to secure the piping space. The inventors have come to constitute the subject matter of this disclosure in order to solve this problem.
Therefore, the present disclosure provides an indoor unit that is space-saving and achieves both securing of piping space and highly efficient air conditioning.

Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters or redundant descriptions of substantially the same configurations may be omitted.
It should be noted that the accompanying drawings and the following description are provided to allow those skilled in the art to fully understand the present disclosure and are not intended to limit the claimed subject matter thereby.

(Embodiment 1)
Embodiment 1 will be described below with reference to FIGS. 1 to 8. FIG.

[1-1. composition]
FIG. 1 is a perspective view of the indoor unit 100 as seen from the front. Hereinafter, for the convenience of explanation, FR, LH, and UP in the drawings correspond to the front, left, and top of the indoor unit 100, respectively, and the front, back, top, bottom, left, and right directions described in the text are based on this. defined as
The indoor unit 100 is a duct-type indoor unit that is mainly arranged in a ceiling space, and stores devices used for air conditioning inside a box-shaped housing 101 . The housing 101 covers four sides of the indoor unit 100 with a front wall 101a (wall surface), a rear wall 101b, a left side wall (side surface) 101c, and a right side wall 101d, and covers the indoor unit 100 with a top panel 101e and a bottom panel 101f. It is configured to cover the top and bottom. The indoor unit 100 is fixed to the ceiling by means of fixing metal fittings 101n provided on the housing 101 .
In the present embodiment, indoor unit 100 includes decorative panel 102 to cover front wall 101a. The decorative panel 102 is a panel that is arranged to face the space to be conditioned to improve appearance, and air is conditioned by blowing air from the panel outlet 102a.

2 is a perspective view of the indoor unit 100 seen from the left side with the decorative panel 102 and the top panel 101e removed, and FIG. 3 is a state in which the decorative panel 102 and the top panel 101e are removed. 100 is a plan view; FIG. For the convenience of explanation, parts that hide the internal structure and detailed parts that are not used for explanation may be omitted from drawing in the drawings.
The housing 101 is partitioned by a partition plate 103 into a blower chamber 105 that houses the blower 110 and a heat exchanger chamber 107 that houses the heat exchanger 120 .

Two fans 110 are provided in the fan room 105 . Blower 110 includes blower fan 115 . Blower fan 115 is driven by drive shaft 113 driven by fan motor 111 . When the blower fan 115 is driven, the blower 110 causes the air in the blower chamber 105 to flow into the heat exchanger chamber 107 through the ventilation port 103 a provided in the partition plate 103 . At this time, air flows into the fan chamber 105 from the outside of the housing 101 through the air intake 106 provided in the bottom panel 101f. The air that flows in at this time passes through an air intake duct (not shown) connected to the air intake port 106 and flows in from the space to be conditioned or the outdoors.
Note that the configuration of this embodiment is an example, and the numbers of the blowers 110 and the fan motors 111 are not limited to the above configuration.

The heat exchanger chamber 107 includes a heat exchanger 120 , a drain pan 121 and a refrigerant pipe connection portion 150 .
In the present embodiment, the heat exchanger 120 is a fin-tube heat exchanger, and is connected to an external refrigerant pipe (not shown) via a refrigerant pipe connector 150 . The refrigerant pipe connection portion 150 includes a liquid connection pipe (refrigerant pipe) 155 and a gas connection pipe (refrigerant pipe) 157 . The liquid connection pipe 155 is connected to an external liquid pipe (not shown), and the gas connection pipe 157 is connected to an external gas pipe (not shown). The liquid connection pipe 155 and the gas connection pipe 157 each branch within the heat exchanger chamber 107 of the housing 101 and connect with the heat exchanger 120 .
The heat exchanger 120 exchanges heat between the air sent from the blower chamber 105 and the refrigerant flowing from the external refrigerant pipe through the refrigerant pipe connector 150 . Thereby, the heat exchanger 120 functions as an evaporator during the cooling operation of the indoor unit 100 and functions as a condenser during the heating operation of the indoor unit 100 . The air that has exchanged heat with the refrigerant in heat exchanger 120 passes through outlet 108 provided in front wall 101a and blows out from housing 101 to the outside.
The drain pan 121 is provided so as to cover substantially the entire bottom surface of the heat exchanger 120 and receives drain water generated in the heat exchanger 120 .

In this embodiment, the left side wall 101c is composed of the substrate support plate 131 and the side plate 151. As shown in FIG.
The substrate support plate 131 is a plate-like member extending from the rear wall 101b of the left side wall 101c across the partition plate 103 to the heat exchanger chamber 107. As shown in FIG. The substrate support plate 131 includes a support portion 131a extending in the front-rear direction of the indoor unit 100, and bent portions 131b that are bent toward the outside of the housing 101 at both end portions in the front-rear direction of the support portion 131a. A substrate 133 is attached to the support portion 131a.
Furthermore, the board support plate 131 forms the electrical equipment box 130 by being covered with an electrical equipment cover 137 indicated by a chain double-dashed line in FIG. That is, the board support plate 131 serves as the bottom surface of the electrical box 130 . Further, the substrate support plate 131 is positioned inside the housing 101 with respect to the side plate 151 . Therefore, the electric equipment box 130 is prevented from protruding outward from the side plate 151, and the space of the indoor unit 100 can be saved.
Further, the support portion 131 a of the substrate support plate 131 is located on the left side of the left end of the heat exchanger 120 . That is, the fan chamber 105 extends to the left side of the left end of the heat exchanger 120 .

The side plate 151 is a plate-shaped member connected to the substrate support plate 131 and extending to the front wall 101a. The side plate 151 has a side plate body portion 152 along the longitudinal direction of the indoor unit 100 and a bent portion 154 bent in two stages. The side plate body portion 152 of the side plate 151 is located outside the housing 101 with respect to the support portion 131 a of the substrate support plate 131 .
The bent portion 154 is provided at the rear end portion of the side plate body portion 152 . The bent portion 154 has an inwardly bent portion 154a bent inward in the left-right direction from the side plate body portion 152 and a rearwardly bent portion 154b bent backward from the inwardly bent portion 154a. The inner curved portion 154a is a surface in contact with the bent portion 131b, and the rear curved portion 154b is a surface in contact with the support portion 131a.

FIG. 4 is a perspective view of the vicinity of the substrate support plate 131 viewed from the rear right. The rear curved portion 154 b includes a fastening portion (end portion) 156 .
The fastening portion 156 has an inward folded surface 156a, a rearwardly folded surface 156b, and an outwardly folded surface 156c, which are sequentially folded inward in the left-right direction, backward, and outward in the lateral direction from the rear end of the rearwardly curved portion 154b. formed by
Therefore, the fastening portion 156 is recessed inward in the left-right direction of the housing 101 and has a space S inside the recess. The side plate 151 is fixed to the partition plate 103 by fastening the fastening portion rear folded surface 156 b and the L-shaped bent portion 103 b provided at the side end of the partition plate 103 with screws 159 . The bent portion 103b is formed by bending the left end of the partition plate 103 so as to be in parallel contact with the fastening portion rear folding surface 156b.
As a result, one end of the screw 159 that fixes the fastening portion rear folded surface 156 b and the bent portion 103 b by fastening fits in the space S formed by the fastening portion 156 . Therefore, interference between the screw 159 and the support portion 131a of the substrate support plate 131 can be suppressed. Further, even when a load is applied in the left-right direction from the partition plate 103, the fastening portion outer folded surface 156c abuts the substrate support plate 131, so that deformation of the fastening portion 156 can be suppressed.

FIG. 5 is a front view of the left side wall 101c, and FIG. 6 is a perspective view of the vicinity of the side plate 151 seen from the front left.
As shown in FIGS. 4 and 6, the bent portion 131b at the front end of the substrate support plate 131 has a first opening 131c, and the inwardly curved portion 154a of the side plate 151 has a second opening 154c. The first opening 131c and the second opening 154c overlap to form an opening A. As shown in FIG. The opening A communicates the interior of the electrical equipment box 130 with the heat exchanger chamber 107 . As shown in FIG. 5, the wiring 135 connected to the substrate 133 is drawn into the heat exchanger chamber 107 by being inserted through the opening A. As shown in FIG.

As shown in FIG. 6 , the side plate body portion 152 has a notch 153 . A liquid connection pipe 155 and a gas connection pipe 157 extend to the outside of the housing 101 from the notch 153 . The notch 153 includes a first pressing portion 153c and a second pressing portion 153d, which are semicircular concave portions. A drain pump support plate 160 indicated by a dashed line in the drawing and a pipe support plate 168 indicated by a dashed line in the drawing are attached to the notch 153 . Furthermore, the lower part of the notch 153 is covered with a side plate lower panel 152 a attached to the side plate 151 .

As shown in FIG. 5 , the drain pump support plate 160 includes a drain pump support portion 161 and a drain water discharge portion 163 . The drain pump support portion 161 (broken line in the drawing) supports the drain pump 123 (chain line in the drawing) inside the heat exchanger chamber 107 via the notch 153 .
The drain pump 123 pumps up the drain water received by the drain pan 121 . The pumped-up drain water flows through the drain pipe 125 (indicated by a two-dot chain line in the figure) and the drain water discharge portion 163 in order, and then flows out to the outside through an external drain hose (not shown).

Further, as shown in FIGS. 5 and 6, the pipe support plate 168 includes a third pressing portion 165 and a fourth pressing portion 167. As shown in FIG. Each of the third pressing portion 165 and the fourth pressing portion 167 is a semicircular concave portion.
The side plate 151 and the drain pump support plate 160 hold the liquid connection pipe 155 between the first pressing portion 153 c and the third pressing portion 165 . Also, the side plate 151 and the drain pump support plate 160 support the gas connection pipe 157 between the second pressing portion 153 d and the fourth pressing portion 167 .

FIG. 7 is a perspective view of the indoor unit 100 viewed from the front left.
The front wall (surface) 101a has a front panel 170 at the connection portion with the left side wall 101c. The front panel 170 includes a front portion 171 , mounting holes 173 , a mounting plate 175 and a heat exchanger support portion 177 .
The front part 171 faces the front of the housing 101 and is fixed to the left side of the housing 101 along the air outlet 108 . The mounting hole 173 is a rectangular hole formed in the front portion 171 . The mounting plate 175 is detachably attached to the front surface portion 171 by screwing so as to cover the mounting holes 173 .

The heat exchanger support portion 177 is a triangular portion formed by bending the front portion 171 toward the outlet 108 rearward. The heat exchanger support portion 177 supports the left end of the heat exchanger 120 . The refrigerant pipe connection portion 150 is provided in the pipe space between the heat exchanger support portion 177 and the left side wall 101c.
The lateral width of the piping space between the heat exchanger support portion 177 and the left side wall 101 c is determined by the lateral width of the heat exchanger 120 . Also, the heat exchanger support portion 177 is provided independently of the substrate support plate 131 . Therefore, the lateral width of the piping space and the lateral width of the fan chamber 105 determined by the arrangement of the substrate support plate 131 can be designed independently of each other. This makes it easier to ensure sufficient piping space and achieve high-efficiency air conditioning by enlarging the blower room 105 .

FIG. 8 is a perspective view of the vicinity of the front panel 170 as seen from the rear.
A refrigerant sensor 180 and a sterilization unit 190 are attached to the mounting plate 175 . The refrigerant sensor 180 and the sterilization unit 190 can be removed from the housing 101 by removing the mounting plate 175 from the front portion 171 .
The refrigerant sensor 180 is a sensor that detects refrigerant leaking from the heat exchanger 120 or the like. Refrigerant sensor 180 is attached to the lower part of the surface of mounting plate 175 that is the inner side of housing 101 . Refrigerant sensor 180 is connected to substrate 133 through opening A by wiring 135 .

The sterilization unit 190 includes an electrostatic atomizer (not shown) and an electrostatic atomizer substrate (not shown). An electrostatic atomizer is a device that generates mist containing charged fine particle water. Mist containing charged fine particle water can suppress viruses, molds, allergenic substances, and bacteria in the air, and can deodorize the air. The charged fine particle water contains active ingredients such as radicals that exhibit sterilizing action, deodorizing action, and the like. The mist generated by the electrostatic atomizer of the sterilization unit 190 flows to the air outlet 108 and flows outside the housing 101 together with the air blown from the air outlet 108 .
The electrostatic atomizer substrate is a substrate for controlling the electrostatic atomizer. The electrostatic atomizer substrate is connected to the substrate 133 via the opening A by wiring 135 .

[1-2. motion]
The operation and action of the indoor unit 100 configured as described above will be described below.
When the indoor unit 100 performs the air conditioning operation, gas refrigerant flows into the heat exchanger 120 through the refrigerant pipe connection portion 150 during the heating operation, and liquid refrigerant flows into the cooling operation.

In the blower chamber 105, the blower 110 sucks air from the outside of the housing 101 through the air inlet 106, and causes the sucked air to flow into the heat exchanger chamber 107 through the air inlet 103a.
Here, as described above, the fan chamber 105 is formed so that the width in the left-right direction increases from the left end of the heat exchanger 120 to the left side. Therefore, in the blower chamber 105, outside air can be easily taken in through the intake port 106. As shown in FIG.

The air that has flowed into heat exchanger chamber 107 exchanges heat with the refrigerant in heat exchanger 120, is heated during heating operation, is cooled during cooling operation, and is blown out of housing 101 from outlet 108.
At this time, the sterilization unit 190 provided on the mounting plate 175 of the front panel 170 generates mist containing charged fine particle water. The generated mist is carried to the space to be conditioned by the flow of air blown out from the outlet 108, and exerts a sterilization effect in the space to be conditioned.

[1-3. effects, etc.]
As described above, in the present embodiment, the indoor unit 100 includes the housing 101, and the housing 101 is divided into the heat exchanger chamber 107 and the fan chamber 105 by the partition plate 103. The left side wall 101c of the body 101 includes a side plate 151 and a board support plate 131 to which the board 133 is attached and which serves as the bottom surface of the electrical box 130. The board support plate 131 is located inside the housing 101 rather than the side plate 151. , and extends from the partition plate 103 to the heat exchanger chamber 107 side.
According to this configuration, it is possible to prevent the electrical box 130 from protruding leftward from the housing 101 . Therefore, the lateral width of the indoor unit 100 can be reduced. Further, by extending the substrate support plate 131 toward the heat exchanger chamber 107 side from the partition plate 103, the substrate 133 can be accommodated in the substrate support plate 131 even when the length of the housing 101 in the front-rear direction is small. Therefore, the length of the housing 101 in the front-rear direction can be reduced.
Furthermore, since the heat exchanger chamber 107 and the blower chamber 105 are partitioned by the board support plate 131, the side plate 151, and the partition plate 103, the second partition plate for partitioning the housing 101 to the left and right is not required. Therefore, it is possible to achieve both securing of piping space and high-efficiency air conditioning by securing a large blower room 105 .

In addition, as in the present embodiment, the partition plate 103 has the bent portion 103b formed at the side end portion, and the fastening portion 156 of the side plate 151 and the bent portion 103b are fastened so that the side plate 151 and the partition plate 103 are connected. and may be configured to be fixed.
With this configuration, the side plate 151 and the partition plate 103 can be fixed with a simple configuration.

Further, as in the present embodiment, the substrate support plate 131 and the side plate 151 may form an opening A, and the wiring 135 connected to the substrate 133 may pass through the opening A.
According to this configuration, the wiring 135 can be easily inserted.

Further, as in the present embodiment, heat exchanger chamber 107 may be provided with outlet 108 , and coolant sensor 180 may be provided on front wall 101 a having outlet 108 .
According to this configuration, the refrigerant sensor 180 can be provided even if the length of the side plate 151 in the front-rear direction is small. Thereby, the size of the indoor unit 100 can be reduced.

Further, as in the present embodiment, the front wall 101 a having the refrigerant sensor 180 has a mounting plate 175 to which the refrigerant sensor 180 is attached, and the mounting plate 175 can be removed from the housing 101 .
According to this configuration, the refrigerant sensor 180 can be easily removed from the housing 101 by removing the mounting plate 175 from the housing 101 . Therefore, maintenance of the refrigerant sensor 180 can be easily performed.

(Embodiment 2)
Embodiment 2 will be described below with reference to FIGS. 9 to 10. FIG. Descriptions of items equivalent to those described in the first embodiment and more detailed items than necessary will be omitted.

[2-1. composition]
FIG. 9 is a front view of the drain pump support plate 260 according to Embodiment 2. FIG. The drain pump support plate 260 includes a drain pump support portion 261 and a drain water discharge portion 263 . Moreover, the drain pump support plate 260 in the second embodiment includes a third pressing portion 265 and a fourth pressing portion 267 .
The drain pump support portion 261 supports the drain pump 123 . As in Embodiment 1, the drain water pumped up by the drain pump 123 flows through the drain pipe 125 and the drain water discharge portion 263 in order, and then flows out of the drain hose (not shown).

FIG. 10 is a perspective view of the periphery of the drain pump support plate 260 in the indoor unit 200 according to Embodiment 2. FIG. In Embodiment 2, the upper portion of notch 153 of side plate 151 is covered with drain pump support plate 260 . Further, the liquid connection pipe 155 and the gas connection pipe 157 are composed of a third pressing portion 265 and a fourth pressing portion 267 provided on the drain pump support plate 260, and a first pressing portion 153c and a second pressing portion 153c provided on the notch 153. It is supported between it and the pressing portion 153d.
That is, in the second embodiment, instead of providing the pipe support plate 168 in the first embodiment, the drain pump support plate 260 and the side plate 151 support the liquid connection pipe 155 and the gas connection pipe 157 .

[2-2. motion]
The operation and effect of the indoor unit 200 configured as described above will be described. Note that the same operations and effects as those of the indoor unit 100 in Embodiment 1 are omitted here.
In Embodiment 2, the liquid connection pipe 155 is supported by the third pressing portion 265 provided on the drain pump support plate 260 and the first pressing portion 153 c provided on the side plate 151 . Similarly, the gas connection pipe 157 is supported by the fourth pressing portion 267 provided on the drain pump support plate 260 and the second pressing portion 153 d provided on the side plate 151 .
Therefore, compared with the case where the pipe support plate 168 and the side plate 151 support the liquid connection pipe 155 and the gas connection pipe 157 as in the first embodiment, the number of parts is reduced in the second embodiment.

[2-3. effects, etc.]
As described above, in the present embodiment, the side plate 151 supports the drain pump support plate 260 , and the drain pump support plate 260 and the side plate 151 support the liquid connection pipe 155 and the gas connection pipe 157 .
According to this configuration, the liquid connection pipe 155 and the gas connection pipe 157 can be supported by the drain pump support plate 260, so the number of parts can be reduced. Therefore, the cost of the indoor unit 200 can be reduced.

(Other embodiments)
As described above, Embodiments 1 and 2 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments with modifications, replacements, additions, omissions, and the like. Also, it is possible to combine the constituent elements described in the first and second embodiments to form a new embodiment.
Therefore, other embodiments will be exemplified below.

In Embodiment 1, indoor unit 100 has been described to include decorative panel 102 so as to cover front wall 101a. The components provided on the front wall 101a may be any component that allows the indoor unit 100 to blow air from the air outlet 108 . Therefore, the component provided on the front wall 101a is not limited to the decorative panel 102. FIG. For example, a duct (not shown) may be provided to communicate between the front wall 101a and the space to be harmonized. However, when the decorative panel 102 is provided on the front wall 101a, the appearance from the front of the indoor unit 100 is improved, so that the decorative panel 102 can be easily installed so as to face the space to be harmonized.

In Embodiment 1, the ducted indoor unit 100 has been described as an example of the indoor unit. The indoor unit 100 may be one in which the heat exchanger chamber 107 and the blower chamber 105 are separated by the partition plate 103 . Therefore, the indoor unit is not limited to the duct type indoor unit 100 .

The present disclosure is applicable to indoor units.

100 indoor unit 101 housing 101a front wall (plane)
101b rear wall 101c left side wall (side)
101d Right side wall 101e Top panel 101f Bottom panel 101n Fixing bracket 102 Decorative panel 102a Panel outlet 103 Partition plate 103a Vent 103b Bent portion 105 Blower chamber 106 Intake port 107 Heat exchanger chamber 108 Blower outlet 110 Blower 111 Fan motor 113 drive Shaft 115 Blower fan 120 Heat exchanger 121 Drain pan 123 Drain pump 125 Drain pipe 130 Electrical box 131 Substrate support plate 131a Support portion 131b Bending portion 131c First opening 133 Substrate 135 Wiring 137 Electrical cover 150 Refrigerant pipe connection portion 151 Side plate 152 side board Body portion 152a Side plate lower panel 153 Notch 153c First pressing portion 153d Second pressing portion 154 Bent portion 154a Inner curved portion 154b Rear curved portion 154c Second opening 155 Liquid connection pipe (refrigerant pipe)
156 fastening part (end part)
156a Inner folding surface of fastening portion 156b Rear folding surface of fastening portion 156c Outer folding surface of fastening portion 157 Gas connection pipe (refrigerant pipe)
159 screw 160 drain pump support plate 161 drain pump support portion 163 drain water discharge portion 165 third holding portion 167 fourth holding portion 168 pipe support plate 170 front panel 171 front portion 173 mounting hole 175 mounting plate 177 heat exchanger support portion 180 Refrigerant sensor 190 Sterilization unit 200 Indoor unit 260 Drain pump support plate 261 Drain pump support part 263 Drain water discharge part 265 Third pressing part 267 Fourth pressing part A Opening S Space

Claims (6)

An indoor unit comprising a housing, wherein the housing is partitioned into a heat exchanger chamber and a fan chamber by a partition plate,
at least one side surface of the housing includes a side plate and a substrate support plate to which the substrate is attached and which serves as the bottom surface of the electrical box;
The indoor unit, wherein the substrate support plate is positioned inside the housing relative to the side plate, and extends toward the heat exchanger chamber from the partition plate. The partition plate has a bent portion at a side end,
The indoor unit according to claim 1, wherein the side plate and the partition plate are fixed by fastening an end portion of the side plate and the bent portion. The side plate supports a drain pump support plate,
The indoor unit according to claim 1, wherein the drain pump support plate and the side plate support the refrigerant pipe. The substrate support plate and the side plate form an opening,
The indoor unit according to claim 1, wherein the wiring connected to the substrate is inserted through the opening. The heat exchanger chamber has an outlet,
The indoor unit according to claim 1, wherein a refrigerant sensor is provided on the wall surface including the outlet. the wall surface including the refrigerant sensor includes a mounting plate to which the refrigerant sensor is attached;
The indoor unit according to claim 5, wherein the mounting plate is removable from the housing.

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