Air conditioning device

Abstract

The present application provides an air conditioning device capable of suppressing damage to birds and animals and capable of measuring outside air temperature with higher accuracy. The air conditioning device includes an outdoor unit (10) having a casing (12) and a heat exchanger housed inside the casing (12), a fan for sucking air from the outside of the casing into the inside of the casing for heat exchange with the heat exchanger, and an outside air temperature sensor (80) for measuring the outside air temperature, provided at a position on the inflow side of the fan and closer to the inner side surface of the casing (12) than the heat exchanger.

Description

Technical Field

[0001] This invention relates to air conditioning devices. Background Technology

[0002] In the prior art, it is known that air conditioning units or heat pump units include an outdoor unit that has a heat exchanger, a fan, a compressor, and an engine that drives the compressor. In such outdoor units, for the control of the air conditioning unit or heat pump unit, there is a structure that includes an external air temperature sensor to measure the outside air temperature. In such outdoor units, to prevent damage to the external air temperature sensor from birds and animals, there is a structure that covers the external air temperature sensor. Alternatively, in outdoor units, to omit the cover and still allow for the measurement of outside air, it is known that an external air temperature sensor is installed at the engine's air vent. In such outdoor units, the external air temperature sensor is covered by the engine's air vent to prevent damage from birds and animals, and it measures the temperature of the outside air flowing into the air vent through the engine's drive, sending this temperature as the outside air temperature to a control unit, etc. (see, for example, Patent Document 1).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2018-204849 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] However, in the outdoor units of existing air conditioning or heat pump devices, no outside air flows in when the engine is not running, which may reduce the accuracy of the outside air temperature measurement by the outside air temperature sensor.

[0009] This invention provides an air conditioning device that can suppress harm from birds and animals and can measure the temperature of the outside air with higher accuracy.

[0010] Methods for solving problems

[0011] The present invention is an air conditioning device comprising an outdoor unit having a housing and a heat exchanger housed inside the housing. The air conditioning device is characterized in that: inside the housing are a fan for drawing air from the outside of the housing for heat exchange with the heat exchanger; and an external air temperature sensor disposed on the inflow side of the fan and closer to the inner surface of the housing than the heat exchanger, for measuring the external air temperature.

[0012] Therefore, the external air temperature sensor can measure the air flowing in from this inlet that has not passed through the heat exchanger. Thus, by measuring this air, the external air temperature sensor can measure the external air temperature with greater accuracy.

[0013] The effects of the invention

[0014] According to the present invention, it is possible to suppress harm from birds and animals, and to measure the external air temperature with higher accuracy. Attached Figure Description

[0015] Figure 1 This is a front view of the outdoor unit of an air conditioning device according to an embodiment of the present invention.

[0016] Figure 2 This is a 3D view of the outdoor unit from the front side.

[0017] Figure 3 This is a 3D view of the outdoor unit from the back side.

[0018] Figure 4 This is a top view of the outdoor unit.

[0019] Figure 5 This is a front view of the upper casing of the outdoor unit.

[0020] Explanation of reference numerals in the attached figures

[0021] 1. Air conditioning unit

[0022] 10 Outdoor Units

[0023] 12. Shell

[0024] 22, 50 columns

[0025] 70 Outdoor heat exchanger (heat exchanger)

[0026] 72 Axial flow fan (fan)

[0027] 80 External air temperature sensor

[0028] 82 Retaining components Detailed Implementation

[0029] The first invention is an air conditioning device, which includes an outdoor unit having a housing and a heat exchanger housed inside the housing. The air conditioning device is characterized in that: inside the housing are a fan that draws in air from the outside of the housing for heat exchange with the heat exchanger; and an external air temperature sensor disposed on the inflow side of the fan and closer to the inner surface of the housing than the heat exchanger, for measuring the external air temperature.

[0030] Therefore, the external air temperature sensor can measure the air flowing into the interior from the outside of the housing before it passes through the heat exchanger. Thus, by measuring this air, the external air temperature sensor can measure the outside air temperature with higher accuracy. Furthermore, because the external air temperature sensor is located inside the housing, it can block the entry of air from the outside of the outdoor unit, suppressing damage from birds and animals.

[0031] In the second invention, the housing has a corner, the heat exchanger is disposed along the inner side of the housing and bends along the corner of the housing, and the external air temperature sensor is disposed at a location between the bend of the heat exchanger and the corner of the housing.

[0032] Therefore, the external air temperature sensor is positioned within the air flowing into the housing, in a location where a portion of the air does not pass through the heat exchanger. Thus, by measuring this air, the external air temperature sensor can measure the external air temperature with greater accuracy.

[0033] In the third invention, an air inlet is provided in the housing, at a position closer to the inflow side of the fan than the heat exchanger, and the external air temperature sensor is located between the inflow side of the fan and the air inlet.

[0034] Therefore, the external air temperature sensor can measure the air flowing in from this inlet that has not passed through the heat exchanger. Thus, by measuring this air, the external air temperature sensor can measure the external air temperature with greater accuracy.

[0035] In the fourth invention, a holding member is provided in the housing to hold the external air temperature sensor, and the external air temperature sensor is held in a position away from the housing by the holding member.

[0036] This suppresses heat conduction from various parts of the housing to the external air temperature sensor. Consequently, the external air temperature sensor can more accurately measure the air flowing in from outside the housing 12, improving the accuracy of external air temperature measurement.

[0037] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0038] Figure 1 This is a front view showing the structure of the outdoor unit 10 of the air conditioning device 1 according to an embodiment of the present invention. Figure 1 In this designation, the lower panel 26 on the front side of the lower housing 16 is omitted.

[0039] Air conditioning unit 1 has a refrigeration cycle, which consists of an indoor heat exchanger housed in the indoor unit, and a compressor 30, an expansion valve, and an outdoor heat exchanger 70 housed in the outdoor unit. Figure 2 , 3 The air conditioning device 1 forms an air conditioning system for the conditioned space where the indoor unit is located by circulating refrigerant in the refrigeration cycle.

[0040] The outdoor unit 10 is a so-called top-flow type outdoor unit, which draws in outside air into the unit and blows the air upward through an outdoor heat exchanger 70 located on the side.

[0041] Outdoor unit 10 Figure 1 As shown, a box-shaped housing 12 extends vertically along its length. The housing 12 includes an upper housing 14 and a lower housing 16, both of which are box-shaped components, with the upper housing 14 mounted on the upper part of the lower housing 16.

[0042] The lower housing 16 includes: a rectangular base plate 20; columns 22 erected at the four corners of the base plate 20; and rectangular frames 24 connecting the four corners to the upper ends of the columns 22.

[0043] The base plate 20 is a plate-shaped component that is in contact with the mounting surface of the housing 12, and the base plate 20 functions as the base plate of the housing 12.

[0044] Lower panels 26, each formed in the shape of a plate, are provided between each column 22. These lower panels 26 form the front, back, and sides of the lower housing 16.

[0045] The interior space of the lower housing 16 becomes the machine room 27. This machine room 27 houses the compressor 30, accumulator 32, oil separator 34, capillary tubes (not shown), and refrigerant piping connecting them, which constitute the refrigerant circuit. Additionally, the machine room 27 houses: an engine 36 that functions as the drive source for the compressor 30; an exhaust heat exchanger 38 that facilitates heat exchange between the exhaust gas from the engine 36 and the cooling water that cools the engine 36; an intake box 40 that regulates the flow rate of air drawn into the engine 36; and an oil tank 42 that stores oil for lubricating the various parts within the engine 36.

[0046] Furthermore, an electrical box 44 is housed in the machine room 27. The electrical box 44 houses electronic components and control devices for controlling various parts of the outdoor unit 10, such as the refrigerant circuit or the engine 36. In other words, the electrical box 44 functions as the control unit of the outdoor unit 10.

[0047] The upper housing 14 includes: pillars 50 erected at the four corners of the frame 24; and a rectangular frame 52 connecting the four corners near the upper ends of these pillars 50.

[0048] The frame 24 is located at the bottom of the upper housing 14. Therefore, the internal space of the upper housing 14 is connected to the machine room 27 via the frame 24.

[0049] Within each column 50, upper panel 54, each formed in the shape of a plate, is provided on the side of the upper housing 14. These upper panel 54 form the side of the lower housing 16.

[0050] In addition, mesh members 56 are provided on both the front and back of the upper housing 14. The mesh member 56 is a member with a specified width and multiple mesh openings. Air can easily be drawn from the outside of the upper housing 14 into the inside through the mesh member 56.

[0051] The frame 52 has a shape substantially the same as the frame 24 and is connected to a portion located below the upper end of each post 50 by a specified width dimension. Therefore, the upper end of each post 50 protrudes upward beyond the upper surface of the frame 24.

[0052] A top plate 60 is provided on the upper part of the upper housing 14. The top plate 60 is a rectangular plate-shaped component forming the upper surface of the upper housing 14 and the housing 12, and functions as a side wall to shield the interior of the upper housing 14 and the housing 12 from the outside. The four corners of the top plate 60 are supported by the upper ends of each post 50.

[0053] The top plate 60 is provided with side plates 62 that are erected from each side with a specified width. Each side plate 62 of the top plate 60, which is disposed on the upper part of the upper housing 14, covers the upper end of each column 50 and the frame 52 when viewed from the side of the upper housing 14.

[0054] A pair of blowholes 64, each opening to a predetermined width, are provided on the top plate 60. Around the periphery of each blowhole 64, annular flared openings 66 protrude towards the upper side of the top plate 60. The upper openings of each flared opening 66 are covered by a mesh (not shown).

[0055] Furthermore, the top plate 60 in this embodiment is provided in a manner that allows it to be detached from the upper housing 14.

[0056] Figure 2This is a 3D view of the outdoor unit 10 from the front side. Figure 3 This is a 3D view of the outdoor unit 10 from the rear side. Furthermore, in Figure 2 , Figure 3 In the text, the top plate 60, each upper panel 54, and each mesh component 56 are omitted.

[0057] like Figure 2 , Figure 3 As shown, within each column 50, and approximately at the center of each side of the upper housing 14, there are support columns 58 extending in the vertical direction. These support columns 58 have approximately the same length as each column 50.

[0058] The interior space of the upper casing 14 becomes the heat exchange chamber 59. Inside the heat exchange chamber 59 are two outdoor heat exchangers 70 and two axial fans 72.

[0059] Each outdoor heat exchanger 70 functions as an evaporator for evaporating refrigerant supplied from the indoor unit or as a condenser for condensing refrigerant. In this embodiment, the outdoor heat exchanger 70 is a so-called finned tube type heat exchanger, which consists of copper refrigerant piping joined with multiple metal fins, and is integrally formed into a long, flat plate shape.

[0060] Each outdoor heat exchanger 70 is arranged in a direction orthogonal to the length direction along the vertical direction of the upper casing 14. The dimensions of each outdoor heat exchanger 70 in the direction orthogonal to the length direction are approximately the same as the dimensions of the upper casing 14 in the vertical direction.

[0061] Figure 4 This is a top view of outdoor unit 10. Figure 4 The top plate 60 of the Lieutenant General is omitted.

[0062] like Figure 4 As shown, one outdoor heat exchanger 70 is arranged along the inner side of the mesh member 56 on the front of the upper housing 14 and the inner side of the upper panel 54. In detail, the outdoor heat exchanger 70 extends along the length of one column 50 on the front side of the upper housing 14 to another column 50, and then extends to a support column 58 adjacent to the other column 50.

[0063] The other outdoor heat exchanger 70 is arranged along the inner side of the mesh member 56 on the back of the upper housing 14 and the inner side of the upper panel 54 on the other side in the longitudinal direction. In detail, the outdoor heat exchanger 70 extends in the longitudinal direction from one column 50 on the back side of the upper housing 14 to the other column 50, and then to the support column 58 adjacent to the other column 50.

[0064] Therefore, each outdoor heat exchanger 70 is bent along its length with a specified bending radius R at a designated location, forming an approximately L-shape when viewed from above. The bent portion of each outdoor heat exchanger 70 is located inside the column 50 on either the front or rear side.

[0065] In addition, each outdoor heat exchanger 70 is positioned below the frame 52 when viewed from above the outdoor unit 10.

[0066] Each axial fan 72 includes a motor 74 and an impeller 76. Each axial fan 72 is a device that draws air from outside the housing 12, i.e., the outdoor unit 10, into the heat exchange chamber 59 by rotational drive, where it exchanges heat with the refrigerant flowing in the outdoor heat exchangers 70, and then releases it back to the outside of the outdoor unit 10. Each axial fan 72, when viewed from above the upper housing 14, is positioned inside the frame 52. Each axial fan 72 is arranged at predetermined intervals along the width direction of the upper housing 14.

[0067] The electric motor 74 is a drive unit that rotates the impeller 76, and the electric motor 74 has a drive shaft (not shown) connected to the impeller 76.

[0068] Figure 5 This is a front view of the upper housing 14 of the outdoor unit 10. Figure 5 In the diagram, the mesh component 56 and the top plate 60 are omitted.

[0069] The impeller 76, rotated by the motor 74, is a rotating component that delivers air in the axial flow direction. For example... Figure 5 As shown, a portion of the air outlet side of each impeller 76 protrudes above the frame 52 when viewed from the front of the upper housing 14. This portion of the air outlet side of each impeller 76 is disposed inside each flare 66.

[0070] An external air temperature sensor 80 is provided inside the upper housing 14. The external air temperature sensor 80 measures the temperature of the air flowing into the upper housing 14 and sends the measurement result as the external air temperature to the control unit. In this embodiment, the external air temperature sensor 80 is a rod-shaped component with a predetermined length.

[0071] The external air temperature sensor 80 is held by a retaining member 82. In this embodiment, the retaining member 82 is formed by covering the surface of a linear metal material with a resin material. This retaining member 82 is plastically deformable. Near the corner of the retaining member 82 located at one of the corners formed by the front and one side of the upper housing 14, one end of the retaining member 82 is connected to the frame 52. Furthermore, the other end of the retaining member 82 is deformed to wrap around the external air temperature sensor 80, thereby holding the external air temperature sensor 80.

[0072] The external air temperature sensor 80, held by the holding member 82, is positioned near the post 50 at the corner formed by the front and one side of the upper housing 14 when viewed from above. That is, the external air temperature sensor 80 is located near the curved portion of the outdoor heat exchanger 70 when viewed from above.

[0073] In detail, when viewed from above, the external air temperature sensor 80 is positioned offset from directly above the outdoor heat exchanger 70. Specifically, when viewed from above, the external air temperature sensor 80 is positioned between the curved portion of the outdoor heat exchanger 70 and the column 50 and side plate 62. That is, when viewed from above, the external air temperature sensor 80 is positioned closer to the inner side of the upper housing 14 than the outdoor heat exchanger 70.

[0074] The external air temperature sensor 80, held by the holding member 82, is positioned above the frame 52 and below the top plate 60 when viewed from the front of the upper housing 14. Specifically, the external air temperature sensor 80 is positioned on the inflow side of the impeller 76 of the axial fan 72 in the vertical direction of the upper housing 14.

[0075] The external air temperature sensor 80 is disposed separately from either the upper surface of the frame 52 or the top plate 60. That is, the external air temperature sensor 80 is disposed in a position that does not contact either the upper surface of the frame 52 or the top plate 60.

[0076] Therefore, heat from various parts of the upper housing 14 can be prevented from being conducted to the external air temperature sensor 80. As a result, the external air temperature sensor 80 can more accurately measure the air flowing in from the outside of the housing 12, thereby improving the accuracy of the external air temperature measurement.

[0077] A wire 84 is connected to one end of the external air temperature sensor 80. This wire 84 is a component that connects the external air temperature sensor 80 and the electrical box 44. In this embodiment, the wire 84 extends from one end of the external air temperature sensor 80 along the upper surface of the frame 52 to one of the support pillars 58, and then extends downward along the support pillars 58 into the interior of the heat exchange chamber 59. When the wire 84 reaches the bottom of the heat exchange chamber 59, it extends through the frame 24 to the machine room 27 and connects to the electrical box 44.

[0078] In addition, the external air temperature sensor 80 and the electrical box 44 can also be wirelessly connected via various radio waves or electromagnetic waves.

[0079] Next, the function of this embodiment will be explained.

[0080] When the air conditioning unit 1 is in heating operation, the outdoor unit 10 starts working, the motor 36 is driven, and the compressor 30 is driven. The compressor 30 compresses the refrigerant and sends it out through the refrigerant piping, wherein the refrigerant is sealed inside the refrigeration cycle consisting of the outdoor heat exchangers 70, the accumulator 32, the capillary tubes (not shown), the indoor heat exchangers (not shown), and the refrigerant piping.

[0081] After the refrigerant releases heat from the indoor heat exchanger, it flows through the piping into the expansion valve, where it is depressurized, and then flows through the piping into each outdoor heat exchanger 70.

[0082] When the outdoor unit 10 starts working, each axial fan 72 is rotated before the motor 36 is driven. The rotating axial fans 72 cause air to flow from the outside of the outdoor unit 10 into the interior of the upper housing 14, i.e., the heat exchange chamber 59.

[0083] At this point, the mesh component 56, the gap between the upper panel 54 and the column 50, and the gap between the lower panel 26 and the column 22 function as inlets, through which air flows into the heat exchange chamber 59. The air flowing into the heat exchange chamber 59 passes through either of the two outdoor heat exchangers 70, thereby promoting heat exchange between the refrigerant flowing inside the outdoor heat exchanger 70 and the air. The refrigerant that has exchanged heat with the air is evaporated. Afterward, the refrigerant flows out of the outdoor heat exchanger 70, through piping into the compressor 30, where it is compressed again.

[0084] On the other hand, the air that has exchanged heat with the refrigerant is discharged from the outlet 64 to the outside of the upper housing 14 by the axial fan 72.

[0085] By repeating this action, the outdoor unit 10 absorbs heat from the outdoor air into the cooling cycle and releases it into the room.

[0086] Furthermore, when the air conditioning unit 1 is operating in cooling mode, the refrigerant circulation direction in the cooling cycle is opposite to that in heating mode.

[0087] Here, as each axial fan 72 rotates, air also flows in through the gaps between the top plate 60 and each column 50, the upper panel 54, and the mesh component 56. These gaps are all located above the outdoor heat exchangers 70, so the air flowing in through these gaps does not pass through either of the two outdoor heat exchangers 70, but is discharged from the outlet 64. That is, the air flowing in through the gaps between the top plate 60 and each column 50, the upper panel 54, and the mesh component 56 is discharged from the outlet 64 without exchanging heat with the refrigerant flowing inside the outdoor heat exchangers 70.

[0088] In this embodiment, the external air temperature sensor 80 is disposed above the frame 52 near one of the pillars 50. That is, the external air temperature sensor 80 is disposed between the top plate 60 and each pillar 50, the upper panel 54 and the mesh component 56, and between it and the axial fan 72.

[0089] Therefore, the external air temperature sensor 80 can measure the temperature of the air flowing into and out of the blow-outlet 64 from the gaps between the top plate 60 and the columns 50, the upper panel 54, and the mesh component 56. Since this air does not pass through either of the two outdoor heat exchangers 70, the estimated temperature is closer to the actual external air temperature. Therefore, the external air temperature sensor 80 can measure this air with higher accuracy.

[0090] As described above, when viewed from above, the external air temperature sensor 80 is positioned closer to the inner surface of the upper housing 14 than the outdoor heat exchanger 70. Furthermore, the external air temperature sensor 80 is positioned between the inner surface of the upper housing 14 and the axial fan 72.

[0091] Therefore, it is possible to measure the air flowing into the space between the top plate 60 and each column 50, the upper panel 54, and the mesh component 56, before it passes through the outdoor heat exchanger 70. Since this air does not pass through either of the two outdoor heat exchangers 70, the estimated temperature is closer to the actual outside air temperature. Therefore, the outside air temperature sensor 80 can measure this air, enabling a more accurate measurement of the outside air temperature.

[0092] As described above, the external air temperature sensor 80 of this embodiment measures the temperature of the air drawn into the housing 12 by the axial fan 72. Therefore, the external air temperature sensor 80 can measure the external air temperature regardless of whether the engine 36 is running.

[0093] Furthermore, the external air temperature sensor 80 is located inside the upper housing 14 and is surrounded by the top plate 60, the column 50, and the frame 52. Therefore, even without a cover for the external air temperature sensor 80, it is possible to prevent entry from the outside of the outdoor unit 10, suppress damage from birds and animals, and reduce the number of components in the outdoor unit 10.

[0094] As explained above, according to this embodiment, the air conditioning device 1 includes an outdoor unit 10, which has a housing 12 and an outdoor heat exchanger 70 housed inside the housing 12. An axial fan 72 is provided inside the housing 12 to draw air in from the outside of the housing 12 for heat exchange with the outdoor heat exchanger 70. Furthermore, an external air temperature sensor 80 for measuring the external air temperature is housed inside the housing 12, located on the inflow side of the axial fan 72 and closer to the inner surface of the housing 12 than the outdoor heat exchanger 70.

[0095] Therefore, it is possible to measure the air flowing into the space between the top plate 60 and each column 50, the upper panel 54 and the mesh component 56, before it passes through the outdoor heat exchanger 70. Thus, the external air temperature sensor 80 can measure this air, enabling more accurate measurement of the external air temperature. Furthermore, the external air temperature sensor 80 is disposed inside the upper housing 14, surrounded by the top plate 60, columns 50 and frame 52, thus preventing entry from the outside of the outdoor unit 10 and suppressing harm from birds and animals.

[0096] Furthermore, according to this embodiment, the outdoor heat exchanger 70 is arranged along the inner side of the housing 12 and has a portion that bends along the corner of the housing 12. Additionally, an external air temperature sensor 80 is provided at a location between the bent portion of the outdoor heat exchanger 70 and the corner of the housing 12.

[0097] Therefore, when viewed from above, the external air temperature sensor 80 is positioned between the housing 12 and the outdoor heat exchanger 70. Thus, the external air temperature sensor 80 can measure a portion of the air flowing into the unit that has not passed through the outdoor heat exchanger 70, enabling more accurate measurement of the external air temperature.

[0098] Furthermore, according to this embodiment, in the housing 12, a gap is provided at a position closer to the inflow side of the axial fan 72 than the outdoor heat exchanger 70, allowing air to flow in, and the external air temperature sensor 80 is configured to be provided between the inflow side of the axial fan 72 and the gap.

[0099] Therefore, the external air temperature sensor 80 can measure the air flowing in from the gap. Thus, the external air temperature sensor 80 can measure the air and measure the external air temperature with higher accuracy.

[0100] Furthermore, according to this embodiment, a holding member 82 for holding an external air temperature sensor 80 is provided in the housing 12, and the external air temperature sensor 80 is configured to be held in a position away from each part of the housing 12 by the holding member 82.

[0101] This suppresses heat conduction from the upper housing 14 to the external air temperature sensor 80. Consequently, the external air temperature sensor 80 can more accurately measure the air flowing in from outside the housing 12, improving the accuracy of external air temperature measurement.

[0102] The above embodiments illustrate one aspect of the present invention, which can be arbitrarily modified and applied without departing from the spirit of the present invention.

[0103] For example, in the above embodiment, the external air temperature sensor 80 is configured to be disposed on the inflow side of the axial fan 72, on the outer side of the curved portion of the outdoor heat exchanger 70, i.e., near one of the pillars 50. However, it is not limited to this; the external air temperature sensor 80 may also be disposed on the upper part of the frame 52, for example, near other pillars 50, as long as the outdoor heat exchanger 70 is not disposed directly below it, any position is acceptable.

[0104] Additionally, for example, in the above-described embodiment, the outdoor unit 10 has a pair of axial fans 72, but it is not limited to this and may also have a single axial fan 72.

[0105] Additionally, for example, in the above-described embodiment, the outdoor unit 10 has an engine 36, but it is not limited to this and may not have one.

[0106] In addition, for example, in the above-described embodiment, the outdoor heat exchanger 70 is configured as a finned tube type heat exchanger, but it is not limited to this, and may also be other types of heat exchangers such as microchannel heat exchangers made of aluminum, plate heat exchangers, etc.

[0107] In addition, for example, in the above-described embodiment, the air conditioning device 1 has a top-flow outdoor unit 10, but it is not limited to this and may also have a side-flow outdoor unit.

[0108] Industrial availability

[0109] As described above, the air conditioning device of the present invention can be appropriately utilized as an air conditioning device that can prevent the external air temperature sensor installed in the outdoor unit from being damaged by birds and animals, and can measure the external air temperature with higher accuracy.

Claims

1. An air conditioning device comprising an outdoor unit having a housing and a heat exchanger housed within the housing, the air conditioning device being characterized in that: A top plate is provided to shield the interior of the housing from the outside. The following are housed inside the housing: A heat exchange chamber housing a fan that draws air from the outside of the housing for heat exchange with the heat exchanger, and the heat exchanger itself; and The machine room houses the compressor and the engine that drives the compressor. An external air temperature sensor for measuring the external air temperature is installed in the heat exchange chamber. It is located on the inflow side of the fan, closer to the inner surface of the housing than the heat exchanger. The heat exchanger is configured to be located below the frame of the housing. The external air temperature sensor is a rod-shaped component, positioned above the frame and below the top plate. A retaining component for holding the external air temperature sensor is provided in the housing. The retaining component is a plastically deformable component formed by covering the surface of a linear metal material with a resin material. The external air temperature sensor is held at a distance from the housing by the retaining component. One end of the retaining member is connected to the frame, and the other end is deformed to wrap around the external air temperature sensor, thereby retaining the external air temperature sensor.

2. The air conditioning device as described in claim 1, characterized in that: The shell has corners. The heat exchanger is arranged along the inner side of the housing and bends along the corners of the housing. The external air temperature sensor is located between the curved portion of the heat exchanger and the corner of the housing.

3. The air conditioning device as described in claim 1, characterized in that: An air inlet is formed in the housing, closer to the fan than the heat exchanger, allowing air to flow in. The external air temperature sensor is located between the inflow side of the fan and the inlet.

4. The air conditioning device as described in claim 2, characterized in that: An air inlet is formed on the housing, closer to the fan than the heat exchanger, allowing air to flow in. The external air temperature sensor is located between the inflow side of the fan and the inlet.

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