JP2013164204A - Indoor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor unit capable of preventing accuracy of detection in a thermistor from being degraded.SOLUTION: An indoor unit has a heat exchanger, an air blower, a bell mouth, and an electrical equipment unit. The electrical equipment unit includes a printed board, a sensor member for detecting temperature of air sucked from the inside of a room, and a case (32) having a case body (32a) having a shape capable of housing the printed board and a sensor member support part (32d) hung outside from the case body (32a) and having a shape capable of supporting a sensor member at a position allowing the sensor member to detect temperature of air sucked from the inside of the room. The case (32) has a heat conduction suppression part (32e) for suppressing transmission of heat generated by the printed board to a portion where the sensor member in the sensor member support part (32d) is supported via the case body (32a).

Description

  The present invention relates to an indoor unit in an air conditioner, and more particularly to a ceiling-suspended or ceiling-embedded indoor unit.

  Conventionally, as an indoor unit embedded in a ceiling in an air conditioner, for example, the one shown in Patent Document 1 below is known. The indoor unit described in Patent Document 1 sucks indoor air from the central portion of the lower surface of the casing, heat-exchanges the air with a heat exchanger, and then blows out air from four outlets provided on the lower surface of the casing. Is. This indoor unit includes a bell mouth that guides indoor air sucked from the central portion of the lower surface of the casing to a blower accommodated in a substantially central portion of the casing, and an electrical unit attached to the lower surface of the bell mouth. The electrical unit includes a circuit board on which electronic components that perform various controls are mounted, and a case that houses the circuit board.

JP 2011-153749 A

  Since many electronic components are mounted on the circuit board of the electrical unit in the indoor unit as described in Patent Document 1, heat is generated from the circuit board during operation of the indoor unit. Although this heat is transmitted to the case, a sensor member for detecting the temperature of air sucked from the room may be attached to the outer surface of the case. In this case, the heat is transmitted through the case to the sensor member. The temperature of the air sucked from the room by the sensor member may not be accurately detected.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an indoor unit that can suppress a decrease in detection accuracy of a sensor member.

  As means for solving the above-mentioned problems, the present invention includes a heat exchanger (12) through which a refrigerant flows, and a blower (14) that takes in indoor air and sends the air toward the heat exchanger (12). ), A bell mouth (16) that guides air taken in from the room to the blower (14), and an electrical unit (30) that performs predetermined control, wherein the electrical unit (30) A printed circuit board (31) on which an electronic component (31a) is mounted, a sensor member (34) for detecting the temperature of air sucked from the room, and a case body (32a) having a shape capable of accommodating the printed circuit board (31) And the shape which can support the said sensor member (34) in the position which can detect the temperature of the air which the said sensor member (34) inhales indoors while projecting outside from this case main body (32a). And a case (32) having a sensor member support portion (32d) having a heat resistance generated by the printed circuit board (31) via the case body (32a). The indoor unit which has a heat conduction suppression part (32e) which suppresses transmitting to the site | part which supports the said sensor member (34) in (32d) is provided.

  According to the indoor unit of the present invention, it is possible to suppress a decrease in detection accuracy of the sensor member. Specifically, the case has a shape projecting outward from the case main body and a sensor member support portion for supporting the sensor member, and heat generated by the printed circuit board is transmitted through the case main body. Since it has a heat conduction suppressing part that suppresses transmission to the part that supports the sensor member in the sensor member supporting part, the heat is blocked by the heat conduction suppressing part and is transmitted to the part that supports the sensor member. It becomes difficult. Thereby, since the said heat becomes difficult to be transmitted also to the said sensor member, generation | occurrence | production of the malfunction of reducing the detection accuracy of the said sensor member can be suppressed.

  In this case, it is preferable that the case main body (32a) is arranged so that at least a part in the height direction thereof overlaps with the bell mouth (16) in the height direction of the bell mouth (16).

  In this way, it is possible to reduce the thickness by the overlapping dimension of the case body and the bell mouth in the height direction.

  Moreover, in this invention, the said heat conduction suppression part (32e) is a hole provided in the said case main body (32a) side rather than the site | part in which the said sensor member (34) is supported in the said sensor member support part (32d). It is preferable that

  In this way, the heat can only be transmitted to the thermistor case from a portion excluding the hole, and this further suppresses a decrease in detection accuracy of the thermistor.

  In this case, the sensor member (34) is attached to the thermistor (35) for detecting the temperature of the air sucked from the room and the sensor member support (32d) so as to protect the thermistor (35). The sensor member support portion (32d) has a surface opposite to the surface supporting the thermistor (35) from the blower (14) to the heat exchanger (12). The thermistor case (36) has a shape that is in contact with the airflow that flows and blocks at least a part of the airflow from reaching the indoor side, and the thermistor case (36) has a shape that blocks at least a part of the hole (32e). preferable.

  If it does in this way, it can control that the air current reaches the room inside, protecting the thermistor. That is, the sensor member support portion prevents the surface opposite to the surface supporting the thermistor from contacting the air flow from the blower to the heat exchanger, but blocks at least a part of this air flow to the indoor side. Since the thermistor case has a shape that closes at least a part of the hole provided in the sensor member support portion, the airflow is suppressed from reaching the indoor side, and the airflow is efficiently generated. It can be led to the heat exchanger. In other words, according to the indoor unit of the present invention, the sensor member supporting portion and the thermistor have the problem that the airflow reaches the indoor side through a hole provided to suppress heat conduction from the printed circuit board to the thermistor. Thermistor case for protecting

  As mentioned above, according to this invention, the indoor unit which can suppress the fall of the detection accuracy of a sensor member can be provided.

It is a perspective view of the indoor unit of one embodiment of the present invention. It is a top view which shows the internal structure of the indoor unit shown in FIG. It is the figure which expanded the electrical equipment unit vicinity of the indoor unit shown in FIG. It is a figure which shows the state which removed the lid | cover of the electrical equipment unit shown in FIG. It is the figure which expanded the sensor member support part vicinity of the electrical equipment unit shown in FIG. It is the figure which looked at the sensor member support part vicinity shown in FIG. 5 from the different angle. It is sectional drawing of the indoor unit shown in FIG.

  An indoor unit according to an embodiment of the present invention will be described with reference to FIGS. FIG. 2 shows a state in which a decorative plate 11 described later is removed and viewed from the indoor side. FIG. 3 shows a state in which one of the fastening members 37 described later is omitted. FIG. 4 shows a state in which a part of the thermistor case 36 described later is broken. In the following description, the direction connecting the ceiling and the floor, that is, the thickness direction of the indoor unit is defined as the vertical direction.

  As shown in FIG. 1, the indoor unit in the present embodiment is a type suspended from the ceiling, that is, a ceiling suspended type indoor unit. The indoor unit includes a casing, and the casing includes a heat exchanger 12, a blower 14, a bell mouth 16, and an electrical unit 30 on which electronic components that perform various controls are mounted. Further, this indoor unit includes a drain pan (not shown) that receives water droplets generated from the heat exchanger 12 in the casing, a drain pump 18 that sucks up the water accumulated in the drain pan and discharges it to the outside of the indoor unit, and the location of indoor people A human detection sensor 19 for detecting the air, an air filter (not shown) for capturing dust in the air taken in from the room, and the like.

  The casing has a substantially rectangular shape and is suspended from the ceiling. This casing includes a substantially rectangular decorative frame 10a, corner covers 10c attached to the four corners of the decorative frame 10a, four wind direction plates 10d attached to the decorative frame 10a, and a top plate 10e attached to the top of the decorative frame 10a. And a decorative plate 11 attached to the lower part of the decorative frame 10a. The decorative frame 10a has an air outlet 10b for blowing air toward the room on each side. Each blower outlet 10b has a long shape in one direction along the longitudinal direction of each side. The corner cover 10c is substantially L-shaped, and is attached to the decorative frame 10a so as to cover the four corners of the decorative frame 10a. Each wind direction board 10d adjusts the direction of the wind which blows off from the blower outlet 10b. The wind direction plate 10d has a shape that is long in one direction, and is attached to the decorative frame 10a so that the longitudinal direction thereof coincides with the longitudinal direction of the air outlet 10b. The wind direction plate 10d has a rotation shaft at both ends in the longitudinal direction, and the rotation shaft is attached to the decorative frame 10a. The top plate 10e is attached to the decorative frame 10a so as to cover the opening provided in the upper part of the decorative frame 10a. The decorative plate 11 has a shape that covers an opening provided in the lower portion of the decorative frame 10a, and includes a suction grill 11a provided in the center thereof, and a sensor opening 11b provided in the vicinity of the suction grill 11a. The suction grill 11a is a part that sucks air from the room, and the sensor opening 11b is for exposing the human detection sensor 19 to the room. The decorative plate 11 has a side on one end side (right side in FIG. 1) pivotally supported by the decorative frame 10a, and a side on the other end side (left side in FIG. 1) is a chamber. It can be opened while rotating to be displaced inward.

  The heat exchanger 12 has a refrigerant flowing therein, and exchanges heat with air taken in from the room. As shown in FIG. 2, the heat exchanger 12 has a shape surrounding the blower 14. Specifically, the heat exchanger 12 has a shape that conforms to the outer shape of the decorative frame 10a and that both ends thereof are opposed at the same corner (upper right corner in FIG. 2). In addition, the end of one side (the lower side in FIG. 2) of the heat exchanger 12 is bent toward the inside of the decorative frame 10a so as not to interfere with the drain pump 18 installed in the vicinity of the corner. Has a shape.

  The blower 14 is provided in the approximate center of the casing, takes in air from the room, and sends the wind toward the heat exchanger 12. Specifically, the blower 14 generates an air current such that the air taken in from the room through the suction grill 11a is blown out from the outlets 10b through the heat exchanger 12 into the room. The blower 14 includes an impeller configured to generate the airflow and a motor that rotationally drives the impeller. In this embodiment, as such a blower 14, a centrifugal blower (turbo fan), that is, a fan capable of sending air taken from below to the side is used. In addition, as the air blower 14, not only a centrifugal air blower but a mixed flow air blower etc. can be used, for example.

  The bell mouth 16 guides air taken in from the room to the blower 14. Specifically, the bell mouth 16 has an opening that opens in the vertical direction at the center, and the diameter of the opening gradually decreases from the lower surface side to the upper surface side of the casing. The bell mouth 16 has a recess 16a having a shape that does not interfere with a sensor member support portion 32d (described later) and a sensor member 34 supported by the sensor member support portion 32d at a part of the periphery of the lower end thereof. The recess 16a is provided so as to cut out a part of the peripheral edge of the bell mouth 16 in the thickness direction.

  The electrical unit 30 is supported by the printed circuit board 31 on which electronic components 31 a for performing various controls are mounted, a case 32 that accommodates the printed circuit board 31, a lid 33 that is detachably attached to the case 32, and the case 32. And a fastening member 37 capable of fastening the case 32 and the lid 33.

  The case 32 has a box body 32a having an opening on one side (the upper side in FIG. 4 and the lower side in FIG. 7), and a flat plate-like flange projecting laterally from the end of the opening of the case body 32a. 32b. The case 32 is formed by processing a metal plate. As shown in FIGS. 4 and 7, the case main body 32a has a bottom wall on which the printed circuit board 31 is placed, and a side wall formed integrally with the bottom wall so as to rise from the peripheral edge of the bottom wall. . The side wall has a shape surrounding the periphery of the printed circuit board 31 and a depth dimension capable of accommodating the printed circuit board 31. In addition to the printed circuit board 31, a terminal block and the like are accommodated in the case main body 32a. The flange 32 b includes a flange main body 32 c having a shape that is long in one direction (the left-right direction in FIG. 4), and a sensor member support portion 32 d that supports the sensor member 34. As shown in FIG. 7, the flange 32b is provided at the lower end of the side wall of the case body 32a.

  As shown in FIG. 7, the flange main body 32 c is positioned slightly above the lower end of the bell mouth 16. The flange body 32c has a shaft portion insertion hole 32g having a shape into which a shaft portion (not shown) of the fastening member 37 can be inserted.

  The sensor member support portion 32d is provided so as to bisect the flange main body 32c in its longitudinal direction, and has a flat plate shape that protrudes in a direction orthogonal to the longitudinal direction and thickness direction of the flange main body 32c from the flange main body 32c. Present. That is, the sensor member support portion 32c has a shape projecting outward from the opening end portion of the case body 32a, and the flange 32b has a portion of the sensor member support portion 32d that is lateral to the case body 32a rather than the flange body 32c. It becomes the shape which protrudes. As shown in FIGS. 3 and 4, a part of the sensor member support portion 32 d (a portion on the bell mouth 16 side) is located in the concave portion 16 a of the bell mouth 16. Further, as shown in FIG. 7, the sensor member support portion 32 d has, together with the bell mouth 16, a space where the airflow generated by the blower 14 reaches the blower 14 from the room, and the airflow reaches the heat exchanger 12 from the blower 14. It is provided at a position where it is partitioned from the previous space. In other words, the upper surface of the sensor member support portion 32d is in contact with the airflow from the blower 14 toward the heat exchanger 12. The sensor member support portion 32d has a shape that blocks airflow from the blower 14 to the heat exchanger 12 from reaching the indoor side through the concave portion 16a, that is, a shape having substantially the same area as the inside of the concave portion 16a. Further, as shown in FIG. 7, the case 32 is disposed such that a portion (case body 32 a) above the sensor member support portion 32 d overlaps with the bell mouth 16 in the height direction of the bell mouth 16.

  The sensor member support portion 32d has a hole 32e. The hole 32e prevents heat generated by the printed circuit board 31 from being transmitted to the sensor member support portion 32d through the side wall of the case body 32a. That is, the hole 32e constitutes a “heat conduction suppressing portion”. As shown in FIGS. 5 and 6, the hole 32e is provided closer to the opening end of the case body 32a than the portion of the sensor member support 32d where the thermistor body 35a is supported, and the longitudinal direction of the flange 32b. And has a long shape in the same direction. Specifically, the hole 32e has a dimension that is at least half of the dimension in the longitudinal direction of the sensor member support portion 32d.

  In the present embodiment, the hole 32e is shown as the heat conduction suppressing portion. However, as the heat conduction suppressing portion, the heat generated by the printed circuit board 31 is transmitted to the portion of the sensor member support portion 32d where the thermistor body 35a is supported. It is only necessary to be able to suppress this, and it may be a thin-walled portion having a thickness dimension smaller than that of the sensor member support portion 32d other than the hole 32e.

  The sensor member support portion 32d has a locking portion 32f that locks the thermistor case 36 described later.

  As shown in FIG. 3, the lid 33 includes a closed portion 33a having substantially the same area as the opening of the case main body 32a, a flange portion 33b that overlaps the flange 32b, an end portion of the closed portion 33a, and an end portion of the flange portion 33b. And an upright part 33e connecting the parts.

  The flange portion 33 b includes a first notch portion 33 c having a shape that does not interfere with the sensor member 34, and a shaft portion insertion portion 33 d having a shape that allows the shaft portion of the fastening member 37 to be inserted. The dimension of the first notch 33c in the longitudinal direction is set to be substantially the same as the dimension of the sensor member 34 in the longitudinal direction of the thermistor case 36.

  The standing portion 33e has a shape that extends from one end (left side in FIG. 3) in the lateral direction of the flange portion 33b so as to stand in a direction substantially orthogonal to the flange portion 33b. The standing portion 33e is connected to the first notch 33c and has a second notch 33f having a shape that does not interfere with the sensor member 34, and a head avoiding portion 33g having a shape that does not interfere with the head 37a of the tightening member 37. Have The longitudinal dimension of the second notch 33 f is set to be substantially the same as the longitudinal dimension of the thermistor case 36 in the sensor member 34. The dimension in the height direction of the second notch 33 f is set to be substantially the same as the dimension in the height direction of the thermistor case 36 in the sensor member 34. The head avoiding portion 33g is connected to the shaft portion insertion portion 33d and has a shape that is slightly larger than the head portion 37a of the tightening member 37. Specifically, the head avoiding portion 33g can be inserted through the head 37a when the lid 33 is displaced in a direction orthogonal to the surface of the standing portion 33e (a direction orthogonal to the longitudinal direction of the flange portion 33b). Has a shape.

  The portion adjacent to the lid 33 on the peripheral edge of the bell mouth 16 is set to have substantially the same height as the position of the flange portion 33b when the lid 33 is attached to the case 32. When the cover 33 is removed by being displaced in a direction orthogonal to the surface, the lid 33 is slid and removed so that the upper surface of the collar portion 33 b is in contact with the lower surface of the bell mouth 16.

  In addition, the head avoidance part 33g may be provided in the collar part 33b instead of the standing part 33e. In this case, the shaft portion insertion portion 33d and the head avoidance portion 33g are arranged in the short direction of the flange portion 33b. That is, the head avoidance portion 33g is connected to the shaft portion insertion portion 33d on the rising portion 33e side of the shaft portion insertion portion 33d, and the shaft portion insertion portion 33d and the head avoidance portion 33g form a so-called dharma hole. .

  The sensor member 34 includes a thermistor 35 that detects the temperature of air sucked from the room, and a thermistor case 36 that protects the thermistor 35.

  The thermistor 35 includes a thermistor body 35 a having a detection unit that detects the temperature of air, and a cable 35 b that is connected to the thermistor body 35 a and can be connected to the printed circuit board 31. With the thermistor case 36 attached to the sensor member support portion 32d, the thermistor body 35a is supported by the sensor member support portion 32d so as to be exposed to the indoor side from the lower surface of the bell mouth 16.

  The thermistor case 36 is made of, for example, a synthetic resin and has a shape that covers the thermistor 35. The thermistor case 36 includes a back wall 36a provided on the opening end side of the case body 32a around the thermistor body 35a, a pair of side walls 36d connected to both ends of the back wall 36a, and a pair of side surfaces. A front wall 36e that connects the walls 36d, a rear wall 36a, a pair of side walls 36d, a bottom wall 36f that connects the lower ends of each of the front walls 36e, and a locking portion 32f provided on the sensor member support portion 32d. And a locked portion 36g that can be engaged. The thermistor case 36 is attached to the lower surface of the sensor member support portion 32d when the locked portion 36g engages with the locking portion 32f. The thermistor case 36 can be omitted.

  The back wall 36a has substantially the same area as the second notch 33f and has a shape that closes the second notch 33f. The back wall 36a includes a cable lead-out portion 36b for leading the cable 35b extending from the thermistor body 35a to the printed circuit board 31 side, and a closing surface 36c shaped to close at least a part of the hole 32e in the sensor member support portion 32d. Have. As shown in FIGS. 5 and 6, in the present embodiment, the blocking surface 36 c has a shape that blocks a part of the hole 32 e, but may have a shape that blocks all of the holes 32 e. The pair of side walls 36d has a shape extending from both ends in the longitudinal direction of the back wall 36a in the short direction of the flange portion 33b. The front wall 36e is connected to the pair of side walls 36d so as to be substantially parallel to the back wall 36a. The front wall 36e and the bottom wall 36f have communication holes that allow the inside and outside of the thermistor case 36 to communicate with each other. Therefore, the air taken in from the room by driving the blower 14 can contact the thermistor body 35a in the thermistor case 36 through this communication hole.

  Next, the driving operation of this indoor unit will be described.

  First, the motor of the blower 14 is driven and the impeller rotates. Then, in this blower 14, the indoor air taken in through the suction grill 11a generates an air flow toward the heat exchanger 12. Then, the air flow passes through the heat exchanger 12 from each outlet 10a to the room. At this time, the temperature of the air taken in from the room by the thermistor 35 is detected on the suction side of the blower 14. Further, the airflow from the blower 14 toward the heat exchanger 12 tends to go indoors through the recess 16a of the bell mouth 16, but the sensor member support portion 32d has a shape that blocks the airflow while being located in the recess 16a. Therefore, the air flow is efficiently guided to the heat exchanger 12. Here, during the driving operation of the indoor unit, heat is generated from the printed circuit board 31 in the electrical unit 30. This heat is conducted through the side wall of the case body 32a and travels to a portion of the sensor member support portion 32d where the thermistor 35 is supported. The sensor member support portion 32d has a hole 32e capable of blocking the heat conduction. Therefore, most of the heat is blocked by the hole 32e, and the heat is transmitted only from the portion excluding the hole 32e of the sensor member support portion 32d to the portion where the thermistor 35 is supported. Thereby, the fall of the detection accuracy of the thermistor 35 can be suppressed. Furthermore, the airflow tends to go indoors through the hole 32e of the sensor member support portion 32d. However, since the closed surface 36c of the thermistor case 36 blocks this airflow, the airflow is efficiently guided to the heat exchanger 12. Can do.

  As described above, in the electrical unit 30 of the present embodiment, the flange portion 33b of the lid 33 has the first notch portion 33c and the shaft portion insertion portion 33d, and the standing portion 33e has the second notch portion 33f and the head portion. Since it has the avoiding portion 33g, the lid 33 can be easily removed from the case 32 simply by loosening the tightening member 37 to the extent that it cannot be completely removed and sliding the lid 33 in a direction perpendicular to the surface of the upright portion 33e. Can do. Further, since the longitudinal dimensions of the first notch 33c and the second notch 33f are substantially the same as the longitudinal dimension of the thermistor case 36, the air heated by the heat generated by the printed circuit board 31 is the same. Generation | occurrence | production of the malfunction of leaking out of the case 32 through the 1st notch part 33c and the 2nd notch part 33f and reducing the detection accuracy of the thermistor 35 can be suppressed.

  Moreover, since the electrical equipment unit 30 of this embodiment has the head avoidance part 33g provided in the standing part 33e, compared with the case where the said head avoidance part 33g is provided in the collar part 33b, the said flange part 33b is short. It is possible to reduce the dimension in the hand direction. Accordingly, it is possible to shorten the dimension in the short direction of the flange 32b of the case 32, and as a result, it is possible to reduce the size of the electrical unit 30.

  Further, in the indoor unit of the present embodiment, the sensor member support portion 32d is located in the recess 16a of the bell mouth 16, and the case main body 32a is located above the lower end of the bell mouth 16, so To the lower end of the case 32, the indoor unit is thinned as a whole.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, the ceiling-suspended indoor unit has been described as an example. However, the present invention also applies to a ceiling-embedded indoor unit in which a portion of the casing excluding the decorative plate 11 is embedded in the ceiling. Applicable.

  In this embodiment, the sensor member support portion 32d is shown as being positioned in the recess 16a of the bell mouth 16, but the sensor member support portion 32d is not positioned in the recess 16a. You may be located in the side rather than a periphery. Even in this case, the vertical dimension of the bell mouth 16 and the case 32 does not increase.

  In the above embodiment, the flange 32b has a shape projecting sideways from the opening end of the case body 32a. However, the flange 32b faces downward from the opening end of the case body 32a. It may be of a shape protruding.

  Moreover, although the sensor member support part 32d showed about the example which has the heat conduction suppression part 32e in the said embodiment, the case main body 32a or the flange main body 32c may have the heat conduction suppression part 32e.

10a decorative frame 10b outlet 10c corner cover 10d wind direction plate 10e top plate 11 decorative plate 11a suction grill 11b sensor opening 12 heat exchanger 14 blower 16 bell mouth 18 drain pump 19 human detection sensor 30 electrical unit 31 printed circuit board 31a electronic component 32 case 32a case body 32b flange 32c flange body 32d sensor member support part 32e hole (heat conduction suppression part)
32f Locking portion 32g Shaft portion insertion hole 33 Lid 33a Closure portion 33b Hook portion 33c First notch portion 33d Shaft portion insertion portion 33e Standing portion 33f Second notch portion 33g Head avoidance portion 34 Sensor member 35 Thermistor 35a Thermistor body 35b Cable 36 Thermistor case 36a Rear wall 36b Cable lead-out part 36c Closed surface 36d Side wall 36e Front wall
36f Bottom wall 36g Locked portion 37 Tightening member 37a Head

Claims (4)

A heat exchanger (12) through which refrigerant flows, an air blower (14) that takes in indoor air and sends wind toward the heat exchanger (12), and air that is taken in from the indoor air blower (14) An indoor unit comprising a bell mouth (16) that leads to an electrical unit and an electrical unit (30) that performs predetermined control,
The electrical unit (30) can accommodate a printed circuit board (31) on which an electronic component (31a) is mounted, a sensor member (34) for detecting the temperature of air sucked from the room, and the printed circuit board (31). The case main body (32a) having a shape and the case main body (32a) project outward from the case main body (32a), and the sensor member (34) can be supported at a position where the temperature of the air sucked from the room can be detected. A case (32) having a sensor member support portion (32d) having an arbitrary shape,
The case (32) transmits heat generated by the printed circuit board (31) to a portion of the sensor member support portion (32d) that supports the sensor member (34) via the case body (32a). The indoor unit which has the heat conduction suppression part (32e) to suppress. The indoor unit according to claim 1,
The case main body (32a) is an indoor unit arranged so that at least a part of the height direction thereof overlaps with the bell mouth (16) in the height direction of the bell mouth (16). The indoor unit according to claim 1 or 2,
The said heat conduction suppression part (32e) is an indoor unit which is a hole provided in the said case main body (32a) side rather than the site | part in which the said sensor member (34) is supported in the said sensor member support part (32d). The indoor unit according to claim 3,
The sensor member (34) includes a thermistor (35) for detecting the temperature of the air sucked from the room, and a thermistor case (36) attached to the sensor member support (32d) so as to protect the thermistor (35). Have
The sensor member support portion (32d) has a surface opposite to a surface supporting the thermistor (35) in contact with the air flow from the blower (14) toward the heat exchanger (12), and It has a shape that blocks at least a part from reaching the indoor side,
The thermistor case (36) is an indoor unit having a shape that closes at least a part of the hole (32e).

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