Air conditioning apparatus

Abstract

To improve air sterilization capability using ultraviolet light.SOLUTION: An air conditioning apparatus (10) comprises an irradiation unit (60) which forms an irradiation region (R) for ultraviolet light along an outflow surface (O1, O2) of a heat exchange part (H). The irradiation unit (60) has: an irradiation part (61) which is arranged at one end side of an air flow passage (34) in a first direction, and irradiates the other end side in the first direction with ultraviolet light; and an irradiation part (61) which is arranged on the other end side of the air flow passage (34) in the first direction, and reflects the ultraviolet light emitted from the irradiation part (61) toward the one end side in the first direction. An optical axis of reflected light from a first reflection part (70) deviates by a predetermined angle from an optical axis of the ultraviolet light from the irradiation part (61) in a second direction.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to an air conditioning apparatus. [Background technology]

[0002] Patent Document 1 discloses an air conditioner equipped with an LED that emits ultraviolet light. The LED is placed in an air flow path inside a casing. The LED emits ultraviolet light toward the air flow path. This ultraviolet light inactivates bacteria and viruses in the air flowing through the air flow path. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Publication No. 2022-126495 Summary of the Invention [Problem to be solved by the invention]

[0004] In an air conditioner such as that described in Patent Document 1, there is a demand for improvement in the ability to sterilize the air by the ultraviolet light emitted from the irradiation unit.

[0005] The object of the present disclosure is to improve the ability of ultraviolet light to sterilize air. [Means for solving the problem]

[0006] The first aspect relates to an air conditioner. The air conditioner includes a flow path forming member (31) that forms an air flow path (34) through which air flows, a plurality of fins (51) that are arranged in a first direction and have a longitudinal direction in a second direction, and a heat transfer tube (52) that penetrates the plurality of fins (51). The air conditioner also includes a heat exchanger (H) that is disposed in the air flow path (34), and an irradiation unit (60) that forms an ultraviolet irradiation region (R) along an air inflow surface (I1, I2) of the heat exchanger (H) or an air outflow surface (O1, O2) of the heat exchanger (H). The irradiation unit (60) includes an irradiation unit (61) that is disposed at one end of the air flow path (34) in the first direction and that irradiates ultraviolet light toward the other end in the first direction, and a first reflection unit (70) that is disposed at the other end of the air flow path (34) in the first direction and that reflects the ultraviolet light irradiated from the irradiation unit (61) toward the one end in the first direction. The optical axis of the light reflected by the first reflecting portion (70) is shifted by a predetermined angle in the second direction with respect to the optical axis of the ultraviolet light from the irradiating portion (61).

[0007] In a first aspect, the irradiation unit (60) forms an ultraviolet irradiation region (R) along the air inlet surface (I1, I2) or the outlet surface (O1, O2) of the heat exchanger (H). The irradiation section (61) of the irradiation unit (60) irradiates ultraviolet light from one end to the other end in a first direction, which is the arrangement direction of the fins (51). The first reflecting section (70) reflects the ultraviolet light irradiated from the irradiation section (61) from the other end to the one end in the first direction. At this time, the first reflecting section (70) reflects the ultraviolet light so that the optical axis of the ultraviolet light from the irradiation section (61) is shifted by a predetermined angle in a second direction, which is the longitudinal direction of the fins (51). Therefore, on the inlet surface (I1, I2) or the outlet surface (O1, O2) of the heat exchanger (H), the ultraviolet irradiation region (R) can be expanded in the arrangement direction of the fins (51) and the longitudinal direction of the fins (51). As a result, the air sterilization capacity is improved.

[0008] In the second aspect, the flow path forming member (31) of the first aspect has a first inner surface (35) formed at one end of the air flow path (34) in the first direction and a second inner surface (36) formed at the other end of the air flow path (34) in the first direction. The irradiation section (61) is supported by the first inner surface (35). The first reflection section (70) is supported by the second inner surface (36). The irradiation section (61) may be directly supported by the first inner surface (35) or indirectly supported by the first inner surface (35). The first reflection section (70) may be directly supported by the second inner surface (36) or indirectly supported by the second inner surface (36).

[0009] In the second mode, ultraviolet light is irradiated and reflected from the first inner surface (35) to the second inner surface (36) of the flow path forming member (31), so that the ultraviolet light irradiation area (R) can be expanded in the first direction.

[0010] In the third embodiment, the flow path forming member (31) in the second embodiment has a shape whose longitudinal direction is the first direction.

[0011] In the third aspect, the flow path forming member (31) has a shape in which the first direction is the longitudinal direction, and therefore the distance from the first inner surface (35) to the second inner surface (36), in other words, the distance from the irradiation portion (61) to the first reflection portion (70), is increased, thereby expanding the ultraviolet irradiation area (R) in the first direction.

[0012] In a fourth aspect, in any one of the first to third aspects, the air conditioner further includes a fan (42) disposed in the air flow path (34), and a control unit (C) that causes the irradiation unit (61) to irradiate ultraviolet light while the fan (42) is operating.

[0013] In a fourth embodiment, the air transported by the fan (42) can be sterilized by ultraviolet light.

[0014] In the fifth embodiment, in the fourth embodiment, the irradiation unit (60) forms an irradiation region (R) along the outflow surface (O1, O2) of the heat exchange section (H).

[0015] In the fifth aspect, an irradiation region is formed on the outlet surface (O1, O2) side of the heat exchanger (H). Here, in the air flow path (34), the air flow rate is likely to be uniform and rectified on the outlet surface (O1, O2) side of the heat exchanger (H). This makes it possible to prevent a decrease in the sterilization ability of the air in the ultraviolet irradiation region (R) due to uneven distribution of air or variations in air speed.

[0016] In the sixth aspect, in the fifth aspect, the fan (42) is disposed downstream of the heat exchanger (H) in the air flow path (34). The irradiation unit (60) forms an irradiation region (R) between the outlet surfaces (O1, O2) of the heat exchanger (H) and the fan (42).

[0017] In the sixth aspect, the ultraviolet light emitted from the irradiation unit (61) is more likely to hit the entire circumference of the rotating fan (42), thereby improving the ability to eliminate microorganisms growing on the surface of the fan (42).

[0018] In a seventh aspect, in the fourth aspect, an inlet (32) is formed in an upper portion of the flow path forming member (31) for drawing air outside the flow path forming member (31) into the air flow path (34). The heat exchange section (H) includes a first heat exchange section (H1) disposed below the inlet (32) and a second heat exchange section (H2) disposed below the first heat exchange section (H1). The irradiation unit (60) forms an irradiation region (R) along the outlet surface (O1, O2) of the first heat exchange section (H1).

[0019] In the seventh aspect, the first heat exchange section (H1) is closer to the inlet (32) than the second heat exchange section (H2). Therefore, the flow rate of air flowing through the first heat exchange section (H1) tends to be larger than that of the second heat exchange section (H2). The irradiation region (R) is formed on the side of the first heat exchange section (H1) where the flow rate of air is relatively large, thereby improving the ability to sterilize the air.

[0020] In an eighth aspect, in any one of the first to sixth aspects, an inlet (32) is formed in an upper part of the flow path forming member (31) for drawing air from outside the flow path forming member (31) into the air flow path (34). The irradiation section (61) is disposed near the lower end of the heat exchange section (H).

[0021] In the eighth aspect, since the irradiation section (61) is located at a position lower than the first reflection section (70), ultraviolet light directly emitted from the irradiation section (61) can be prevented from leaking outside the flow path forming member (31) through the inlet (32).

[0022] In a ninth aspect, in any one of the first to eighth aspects, the irradiation unit (60) is disposed at one end in the first direction of the air flow path (34), and includes a second reflecting section (80) that reflects the ultraviolet light reflected by the first reflecting section (70) toward the other end in the first direction. The optical axis of the reflected light of the second reflecting section (80) is shifted by a predetermined angle in the second direction with respect to the optical axis of the ultraviolet light of the first reflecting section (70).

[0023] In the ninth aspect, the second reflecting portion (80) reflects the ultraviolet light reflected by the first reflecting portion (70) toward the other end in the first direction. Here, the second reflecting portion (80) reflects the ultraviolet light so that the optical axis of the ultraviolet light reflected by the first reflecting portion (70) is shifted by a predetermined angle in the second direction, which is the longitudinal direction of the fins (51). This makes it possible to further expand the ultraviolet light irradiation area (R) in the longitudinal direction of the fins (51).

[0024] In a tenth aspect, in the ninth aspect, the first reflecting portion (70) has a curved first reflecting surface (71) recessed toward the other end side in the first direction, and the second reflecting portion (80) has a curved second reflecting surface (81) recessed toward one end side in the first direction.

[0025] In the tenth aspect, the first reflecting surface (71) and the second reflecting surface (81) are formed in a curved shape, which makes it easier for the reflected ultraviolet light to remain between the first reflecting surface (71) and the second reflecting surface (81). This makes it possible to prevent the angle of the reflected ultraviolet light from being significantly tilted in the second direction. As a result, it is possible to prevent the ultraviolet light from leaking outside the flow path forming member (31). [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a piping diagram of an air conditioning apparatus according to an embodiment. [Figure 2] FIG. 2 is a front view showing the appearance of the air conditioner. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. [Figure 4] FIG. 4 is a view of the front first heat exchange section as seen from the first outflow surface side. [Figure 5] FIG. 5 is a schematic diagram of the irradiation unit. [Figure 6] FIG. 6 is a block diagram showing the relationship between the main devices of the air conditioner and the control unit. [Figure 7] FIG. 7 is a diagram corresponding to FIG. 4, in which the direction of ultraviolet light from the irradiation unit is indicated by arrows. [Figure 8] FIG. 8 is a diagram corresponding to FIG. 3 of an air conditioner according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the embodiments shown below, and various modifications are possible within the scope of the technical concept of the present disclosure. Since the drawings are intended to conceptually explain the present disclosure, dimensions, ratios, or numbers may be exaggerated or simplified as necessary to facilitate understanding.

[0028] (1) Overview of air conditioning equipment The irradiation unit 60 is applied to an air conditioner 10. The air conditioner 10 conditions the air in an indoor space I, which is a target space. The air conditioner 10 adjusts the temperature of the air in the room.

[0029] As shown in Fig. 1, the air conditioner (10) has an outdoor unit (20), an indoor unit (30), a first connecting pipe (12), and a second connecting pipe (13). The outdoor unit (20) and the indoor unit (30) are connected to each other via the first connecting pipe (12) and the second connecting pipe (13), thereby forming a refrigerant circuit (11). The refrigerant circuit (11) performs a refrigeration cycle by circulating a refrigerant.

[0030] The outdoor unit (20) is installed outdoors. The outdoor unit (20) has an outdoor casing (20a) and outdoor elements housed in the outdoor casing (20a). The outdoor elements include a compressor (21), an outdoor heat exchanger (22), an expansion valve (23), a four-way switching valve (24), and an outdoor fan (25). The compressor (21) compresses the refrigerant it draws in and discharges the compressed refrigerant. The outdoor heat exchanger (22) exchanges heat between the refrigerant flowing therethrough and outdoor air transported by the outdoor fan (25). The expansion valve (23) reduces the pressure of the refrigerant. The four-way switching valve (24) switches the flow of the refrigerant between cooling operation and heating operation.

[0031] (2) Indoor unit configuration The configuration of the indoor unit (30) will be described with reference to Figures 2 to 4. In the following description, terms such as "front," "rear," "right," "left," "upper," and "lower" are based on the directions indicated by the arrows in Figures 2 and 3.

[0032] The indoor unit (30) is installed in the indoor space (I). The indoor unit (30) of this embodiment is a wall-mounted indoor air conditioner installed on a wall of the indoor space (I). The indoor unit (30) has a casing (31) and indoor elements housed in the casing (31). The indoor elements include an air filter (41), an indoor heat exchanger (50), an indoor fan (42), a drain pan (43), and a flap (44).

[0033] (2-1) Casing The casing (31) constitutes a flow path forming member that forms the air flow path (34). The casing (31) is formed in a horizontally elongated hollow shape. The longitudinal direction of the casing (31) corresponds to the left-right direction. The casing (31) has a front plate (31a), a rear plate (31b), an upper plate (31c), a lower plate (31d), a first side plate (31e), and a second side plate (31f). The front plate (31a) is formed on the front side of the casing (31) and constitutes the front surface of the casing (31). The rear plate (31b) is formed on the rear side of the casing (31) and constitutes the rear surface of the casing (31). The upper plate (31c) is formed on the upper side of the casing (31) and constitutes the upper surface of the casing (31). The lower plate (31d) is formed on the lower side of the casing (31) and constitutes the lower surface of the casing (31). The first side plate (31e) is formed on the right side of the casing (31) and constitutes the right surface of the casing (31). The second side plate (31f) is formed on the left side of the casing (31) and constitutes the left surface of the casing (31).

[0034] An inlet (32) is formed in the upper plate (31c), and an outlet (33) is formed in the lower plate (31d). The inlet (32) is an opening for taking air from the indoor space (I) into the air flow path (34). The outlet (33) is an opening for blowing air from the air flow path (34) into the indoor space (I). The air flow path (34) is formed inside the casing (31) from the inlet (32) to the outlet (33).

[0035] (2-2) Air filter The air filter (41) is disposed in the air flow path (34) upstream of the indoor heat exchanger (50). The air filter (41) is disposed along the air inlet (32) and on the far side of the air inlet (32). The air filter (41) is a mesh member. The air filter (41) collects dust in the air sucked through the air inlet (32).

[0036] (2-3) Indoor heat exchanger The indoor heat exchanger (50) is disposed in the air flow path (34) upstream of the indoor fan (42). The indoor heat exchanger (50) is a fin-and-tube heat exchanger. The indoor heat exchanger (50) exchanges heat between the refrigerant flowing therethrough and the indoor air transported by the indoor fan (42).

[0037] 3, the indoor heat exchanger (50) has a front first heat exchange section (H1), a front second heat exchange section (H2), and a rear heat exchange section (H3). The front first heat exchange section (H1), the front second heat exchange section (H2), and the rear heat exchange section (H3) each constitute a heat exchange section (H) of the heat exchanger (50).

[0038] The front first heat exchange section (H1) and the front second heat exchange section (H2) are disposed closer to the front plate (31a) of the casing (31). The front first heat exchange section (H1) is disposed closer to the top plate (31c) of the casing (31). The front first heat exchange section (H1) constitutes a first heat exchange section disposed below the air inlet (32). The front first heat exchange section (H1) is located in front of and above the indoor fan (42).

[0039] The front second heat exchange section (H2) constitutes a second heat exchange section disposed below the front first heat exchange section (H1). The front second heat exchange section (H2) is located in front of the indoor fan (42). A drain pan (43) is provided below the front second heat exchange section (H2).

[0040] In this embodiment, the lower edge of the lower end of the front first heat exchange section (H1) and the rear edge of the upper end of the front second heat exchange section (H2) are in contact with each other. The front first heat exchange section (H1) and the rear heat exchange section (H3) form a front heat exchange section whose overall outer shape is V-shaped when viewed from the left-right direction.

[0041] The rear heat exchange section (H3) is disposed closer to the rear plate (31b) of the casing (31). The rear heat exchange section (H3) is disposed closer to the top plate (31c) of the casing (31). The second rear heat exchange section (H2) is located behind the indoor fan (42).

[0042] The first front heat exchange section (H1), the second front heat exchange section (H2), and the rear heat exchange section (H3) each have a plurality of fins (51) arranged in a first direction and heat transfer tubes (52) passing through the plurality of fins (51). The fins (51) are formed in the shape of a substantially rectangular plate. The fins (51) have long sides and short sides perpendicular to the first direction. The fins (51) are formed in the shape of a rectangle extending in a direction perpendicular to the first direction and the air passage direction. The fins (51) are made of, for example, an aluminum material.

[0043] The fins (51) are arranged in a first direction so as to be parallel to one another in the thickness direction of the fins. The heat transfer tube (52) has a U-shaped portion (52a) and a straight portion (52b). The straight portion (52b) penetrates the fins (51) in the thickness direction. The extending direction of the straight portion (52b) corresponds to the first direction.

[0044] In this embodiment, the front-side first heat exchange section (H1) constitutes a heat exchange section corresponding to the irradiation unit (60). The longitudinal direction of the fins (51) of the front-side first heat exchange section (H1) corresponds to the second direction. The front-side first heat exchange section (H1) is formed with a first inflow surface (I1) and a first outflow surface (O1). The first inflow surface (I1) is a region of the front-side first heat exchange section (H1) into which air flows. The first outflow surface (O1) is a region from which air flows out after passing through the front-side first heat exchange section (H1).

[0045] Specifically, as shown in FIG. 4 , the front-side first heat exchange section (H1) has a first end plate (53) and a second end plate (54). The first end plate (53) is the plate located at the endmost position on one end side of the front-side first heat exchange section (H1) in the first direction. The second end plate (54) is the plate located at the endmost position on the other end side of the front-side first heat exchange section (H1) in the first direction. The first inlet surface (I1) is formed between the first end plate (53) and the second end plate (54) in the upstream portion of the front-side first heat exchange section (H1). The first outlet surface (O1) is formed between the first end plate (53) and the second end plate (54) in the downstream portion of the front-side first heat exchange section (H1).

[0046] (2-4) Indoor fan, drain pan, and flap The indoor fan (42) is an example of a fan. The indoor fan (42) is a cross-flow fan. The indoor fan (42) is driven to rotate by a fan motor. The direction of the rotation axis of the indoor fan (42) corresponds to the first direction. In other words, the indoor fan (42) has an outer shape whose longitudinal direction is the first direction.

[0047] The drain pan (43) is disposed below the indoor heat exchanger (50). The drain pan (43) is a tray that receives water generated in the casing (31). The drain pan (43) receives condensation water generated on the surface of the indoor heat exchanger (50).

[0048] The flap (44) constitutes an airflow direction adjusting unit that adjusts the direction of the blown air. The flap (44) adjusts the vertical direction of the blown air. The flap (44) may also adjust the horizontal direction of the blown air.

[0049] (3) Irradiation unit (3-1) Overall structure As shown in FIGS. 3 and 4, the air conditioner (10) includes an irradiation unit (60). The irradiation unit (60) is disposed in the air flow path (34) of the indoor unit (30). The irradiation unit (60) forms an ultraviolet irradiation region (R) in the air flow path (34). The irradiation unit (60) inactivates bacteria and viruses in the air in the air flow path (34) by ultraviolet light. The irradiation unit (60) of this embodiment is located downstream of the front first heat exchange section (H1). The irradiation unit (60) forms the irradiation region (R) along the first outlet surface (O1) of the front first heat exchange section (H1).

[0050] As shown in FIG. 4, the irradiation unit (60) has an irradiation section (61), a first reflection section (70), and a second reflection section (80). The irradiation section (61) and the second reflection section (80) are disposed at one end of the air flow path (34) in the first direction, and the first reflection section (70) is disposed at the other end of the air flow path (34) in the first direction. The irradiation section (61) irradiates ultraviolet light. The first reflection section (70) reflects the ultraviolet light irradiated by the irradiation section (61). The second reflection section (80) reflects the ultraviolet light irradiated by the first reflection section (70).

[0051] (3-2) Irradiation unit The irradiation unit (61) is supported by the first inner surface (35) of the first side plate (31e) of the casing (31). The first inner surface (35) is a surface of the first side plate (31e) that is formed on the air flow path (34) side. In other words, the first inner surface (35) is a surface that defines the air flow path (34) at one end side in the first direction. Strictly speaking, the irradiation unit (61) of this embodiment is indirectly supported by the first inner surface (35) via the first reflecting unit (70). The irradiation unit (61) may be directly supported by the first inner surface (35). The irradiation unit (61) may be indirectly supported by the first inner surface (35) via another component part in the casing (31).

[0052] The irradiation section (61) is disposed on the first inner surface (35) near the lower end of the front first heat exchange section (H1). The distance from the lower end of the front first heat exchange section (H1) to the irradiation section (61) is shorter than the distance from the upper end of the front first heat exchange section (H1) to the irradiation section (61). The irradiation section (61) is supported by one end (lower end) of the second reflecting section (80) in the second direction.

[0053] 5, the irradiation unit 61 includes an LED (Light Emitting Diode) 62, a reflector 63, a lens 64, and a control board 65 that controls the LED 62. The reflector 63 and the lens 64 constitute a light distribution control unit that distributes ultraviolet light from the LED 62.

[0054] The LED (62) is a light source that emits ultraviolet rays. The peak wavelength of the ultraviolet rays emitted by the LED (62) is 280 nm or less. This can improve the air sterilization effect. The peak wavelength of the ultraviolet rays emitted by the LED (62) is preferably 255 nm or more and 275 nm or less. This can improve the air sterilization effect in particular. The peak wavelength of the ultraviolet rays emitted by the LED (62) may be 230 nm or less. This can improve the safety of human exposure in the event that the ultraviolet rays leak outside the casing (31).

[0055] The reflector 63 is a curved reflecting plate that reflects the ultraviolet light emitted from the LED 62. The lens 64 condenses the ultraviolet light emitted from the LED 62. The reflector 63 and the lens 64 cause the ultraviolet light from the irradiation unit 61 to be emitted along a first optical axis A1.

[0056] The control board (65) has an electric circuit that controls the LEDs (62). The control board (65) is included in the control unit (C), which will be described in detail later. The control unit (C) switches the LEDs (62) on and off and adjusts the output of the LEDs (62). The control unit (C) of this embodiment is incorporated into an air conditioning controller that controls the air conditioner (10). The LEDs (62) and the control board (65) are provided with heat dissipation members (not shown) that dissipate heat from the LEDs (62).

[0057] (3-3) 1st reflection section The first reflecting portion (70) is supported by the second inner surface (36) of the second side plate (31f) of the casing (31). The second inner surface (36) is a surface of the second side plate (31f) that is formed on the air flow path (34) side. In other words, the second inner surface (36) is a surface that defines the air flow path (34) on the other end side in the first direction. The first reflecting portion (70) may be directly supported by the second inner surface (36) or indirectly supported by the second inner surface (36) via another member (such as a fixture or adhesive tape).

[0058] The first reflecting portion (70) is formed in a plate shape extending along the second direction. The first reflecting portion (70) of this embodiment is located downstream of the front first heat exchange portion (H1). The first reflecting portion (70) extends along the first outflow surface (O1) of the front first heat exchange portion (H1). One longitudinal end of the first reflecting portion (70) is located near the lower end of the front first heat exchange portion (H1). The other longitudinal end of the first reflecting portion (70) is located near the upper end of the front first heat exchange portion (H1).

[0059] The first reflecting portion (70) has a first reflecting surface (71). When viewed in a cross section in a third direction perpendicular to the first and second directions, the first reflecting surface (71) has a curved shape that is recessed toward the other end in the first direction. This prevents ultraviolet rays reflected by the first reflecting surface (71) from being significantly tilted outward in the second direction.

[0060] When viewed in a cross section in the second direction, the first reflecting surface (71) preferably has a curved shape that is concave toward the other end in the first direction. In other words, the first reflecting surface (71) preferably has a spherical or parabolic shape. This prevents ultraviolet rays reflected by the first reflecting surface (71) from being significantly tilted outward in the third direction.

[0061] The specular reflectance r of the first reflecting surface (71) of the first reflecting portion (70) is preferably 50% or more. The specular reflectance r is expressed by the following formula (1).

[0062] r[%]=(E2 / E1)×100···(1) formula E1 is the amount of ultraviolet light [mW] that enters the reflecting section, and E2 is the amount of ultraviolet light [mW] that is reflected by the reflecting section.

[0063] As shown in FIG. 4, the distance from the first inner surface (35) to the midpoint C1 of the first reflecting surface (71) in the second direction is defined as L1. In this case, it is preferable that the radius of curvature R1 of the first reflecting surface (71) is equal to or greater than L1. If R1 is smaller than L1, the focal point of the first reflecting surface (71) will be too close to the first reflecting portion (70), and the ultraviolet rays reflected by the first reflecting surface (71) will be significantly tilted outward in the second direction. It is preferable that the radius of curvature R1 of the first reflecting surface (71) is equal to or less than 2×L1. If R1 is larger than 2×L1, the ultraviolet rays reflected from the first reflecting surface (71) will be too close to the irradiated portion (61), accelerating deterioration of the irradiated portion (61) due to the ultraviolet rays.

[0064] (3-4)Second reflection section The second reflecting portion (80) is supported on the first inner surface (35) of the first side plate (31e) of the casing (31). The second reflecting portion (80) may be directly supported on the first inner surface (35) or indirectly supported on the first inner surface (35) via another member (such as a fixture or adhesive tape). The second reflecting portion (80) faces the first reflecting portion (70) across the irradiation region (R). When viewed in the first direction, the first reflecting portion (70) and the second reflecting portion (80) at least partially overlap, but preferably they entirely overlap.

[0065] The second reflecting portion (80) is formed in a plate shape extending in the second direction. In this embodiment, the second reflecting portion (80) is located downstream of the front first heat exchange portion (H1). The second reflecting portion (80) extends along the first outflow surface (O1) of the front first heat exchange portion (H1). One longitudinal end of the second reflecting portion (80) is located near the lower end of the front first heat exchange portion (H1), and the other longitudinal end of the second reflecting portion (80) is located near the upper end of the front first heat exchange portion (H1).

[0066] The second reflecting portion (80) has a second reflecting surface (81). When viewed in a cross section in a third direction perpendicular to the first and second directions, the second reflecting surface (81) has a curved shape that is recessed toward one end in the first direction. This prevents ultraviolet rays reflected by the second reflecting surface (81) from being significantly tilted outward in the second direction.

[0067] When viewed in cross section in the second direction, the second reflecting surface (81) preferably has a curved shape that is concave toward the other end in the first direction. In other words, the second reflecting surface (81) preferably has a spherical or parabolic shape. This prevents ultraviolet rays reflected by the second reflecting surface (81) from being significantly tilted outward in the third direction.

[0068] The regular reflectance r of the second reflecting surface (81) of the second reflecting portion (80) is preferably 50% or more.

[0069] 4, the distance from the second inner surface (36) to the midpoint C2 of the second reflecting surface (81) in the second direction is defined as L2. In this case, it is preferable that the radius of curvature R2 of the second reflecting surface (81) is equal to or greater than L2. This is because if R2 were smaller than L2, the focal point of the second reflecting surface (81) would be too close to the second reflecting portion (80), and the ultraviolet rays reflected by the second reflecting surface (81) would be significantly tilted outward in the second direction.

[0070] (3-5) Control unit The control unit (C) shown in Fig. 6 controls the air conditioner (10). The control unit (C) includes an MCU (Micro Control Unit), an electric circuit, and an electronic circuit. The MCU includes a CPU (Central Processing Unit), a memory, and a communication interface. The memory stores various programs to be executed by the CPU.

[0071] Strictly speaking, the control unit (C) is configured by connecting an outdoor control unit provided in the outdoor unit (20) and an indoor control unit provided in the indoor unit (30) via communication lines. The control unit (C) controls the ON / OFF switching and rotation speed of the compressor (21), the ON / OFF switching and rotation speed of the outdoor fan (25), the ON / OFF switching and rotation speed of the indoor fan (42), the opening of the expansion valve (23), the state of the four-way switching valve (24), the angle of the flap (44), etc.

[0072] The control unit (C) controls the irradiation unit (61). Specifically, the control unit (C) controls the ON / OFF switching of the LED (62) and the output of the LED (62). The output of the LED (62) here includes the intensity, illuminance, and irradiation time of the ultraviolet light emitted from the LED (62). The output of the LED (62) includes the ON time, OFF time, cycle, and duty ratio in the operation of intermittently repeating ON / OFF.

[0073] (4) Operation of the air conditioner The air conditioner (10) performs cooling operation and heating operation.

[0074] The cooling operation is an operation in which the air in the indoor space (I) is cooled to approach a set temperature (target temperature). In the cooling operation, the four-way selector valve (24) is in the first state (the state shown by the dashed line in FIG. 1). In FIG. 1, the flow of the refrigerant during the cooling operation is indicated by dashed arrows. In the cooling operation, the refrigerant compressed by the compressor (21) dissipates heat in the outdoor heat exchanger (22) and is then decompressed by the expansion valve (23). The decompressed refrigerant evaporates in the indoor heat exchanger (50). The air cooled by the indoor heat exchanger (50) is supplied to the indoor space (I). The refrigerant evaporated in the indoor heat exchanger (50) is drawn into the compressor (21).

[0075] The heating operation is an operation in which the air in the indoor space (I) is heated to approach a set temperature (target temperature). In the heating operation, the four-way selector valve (24) is in the second state (the state shown by the solid line in FIG. 1). In FIG. 1, the flow of the refrigerant in the heating operation is indicated by the solid arrows. In the heating operation, the refrigerant compressed by the compressor (21) dissipates heat in the indoor heat exchanger (50) and is then decompressed by the expansion valve (23). The air heated by the indoor heat exchanger (50) is supplied to the indoor space (I). The decompressed refrigerant evaporates in the outdoor heat exchanger (22) and is then drawn into the compressor (21).

[0076] (5) Operation of the irradiation unit The control unit (C) operates the irradiation unit (60) in cooling operation or heating operation. The control unit (C) controls the irradiation unit (61) to irradiate ultraviolet light while the indoor fan (42) is operating.

[0077] 7, the irradiation section (61) irradiates ultraviolet light from one end side (the first inner surface (35) side) in the first direction toward the other end side (the second inner surface (36) side) in the first direction. For example, a first optical axis (A1) that is the optical axis of the ultraviolet light of the irradiation section (61) coincides with the first direction. Since the irradiation section (61) irradiates ultraviolet light from the first inner surface (35) to the second inner surface (36), the irradiation region (R) can be formed over the entire arrangement direction of the fins (51) of the front first heat exchange section (H1).

[0078] The ultraviolet light emitted from the irradiating section (61) is reflected by the first reflecting section (70). The first reflecting section (70) reflects the ultraviolet light from the other end side in the first direction (the second inner surface (36) side) toward one end side in the first direction (the first inner surface (35) side).

[0079] The second optical axis (A2), which is the optical axis of the light reflected by the first reflecting section (70), is offset by a predetermined first angle θ1 in the second direction from the first optical axis (A1) of the irradiating section (61). Specifically, the second optical axis (A2) is offset by the first angle θ1 toward the other end in the second direction from the first optical axis (A1). The first angle θ1 is a predetermined angle greater than 0°. This allows the irradiation region (R) of the irradiation unit (60) to be expanded in the second direction, i.e., in the longitudinal direction of the fins (51). The ultraviolet light reflected by the first reflecting section (70) reaches from the second inner surface (36) to the first inner surface (35), so that the irradiation region (R) expanded in the second direction can be formed over the entire arrangement direction of the fins (51) of the front first heat exchange section (H1). The first angle θ1 is preferably 1° or greater.

[0080] The ultraviolet light reflected by the first reflecting portion (70) is reflected by the second reflecting portion (80). The first reflecting portion (70) reflects the ultraviolet light from one end side in the first direction (the first inner surface (35) side) toward the other end side in the first direction (the second inner surface (36) side).

[0081] The third optical axis (A3), which is the optical axis of the light reflected by the second reflecting portion (80), is offset by a predetermined second angle θ2 in the second direction from the second optical axis (A2) of the first reflecting portion (70). Specifically, the third optical axis (A3) is offset by the second angle θ2 toward the other end in the second direction from the second optical axis (A2). The second angle θ2 is a predetermined angle greater than 0°. This allows the irradiation region (R) of the irradiation unit (60) to be expanded in the second direction, i.e., in the longitudinal direction of the fins (51). The ultraviolet light reflected by the second reflecting portion (80) reaches from the second inner surface (36) to the first inner surface (35), so that the irradiation region (R) expanded in the second direction can be formed over the entire arrangement direction of the fins (51) of the front first heat exchanger (H1). The second angle θ2 is preferably 1° or greater.

[0082] θ1 and θ2 are shifted to the same side (the other end side) in the second direction. Therefore, the first reflecting portion (70) and the second reflecting portion (80) can expand the irradiation area (R) to the other end side in the second direction. Note that the angles θ1 and θ2 are exaggerated in FIG. 7.

[0083] The ultraviolet light of the third optical axis (A3) reflected by the second reflecting portion (80) reaches the first reflecting portion (70) again. The first reflecting portion (70) reflects the ultraviolet light so as to be shifted by a predetermined angle toward the other end in the second direction. The ultraviolet light reflected by the first reflecting portion (70) reaches the second reflecting portion (80) again. The second reflecting portion (80) reflects the ultraviolet light so as to be shifted by a predetermined angle toward one end in the second direction. The ultraviolet light reflected by the second reflecting portion (80) reaches the first reflecting portion (70) again. The first reflecting portion (70) reflects the ultraviolet light so as to be shifted by a predetermined angle toward one end in the second direction.

[0084] As described above, in the irradiation unit (60), the ultraviolet rays are reflected alternately between the first reflecting portion (70) and the second reflecting portion (80). As a result, an ultraviolet ray irradiation region (R) can be formed along the entire first outflow surface (O1) of the front first heat exchange portion (H1).

[0085] It is preferable that the irradiation area (R) overlaps the entire first outflow surface (O1) when viewed in the third direction, thereby achieving sterilization power for the entire air that has passed through the first outflow surface (O1).

[0086] The front-side first heat exchange section (H1) is located closer to the air inlet (32) than the front-side second heat exchange section (H2), and therefore the flow rate of air passing through the front-side first heat exchange section (H1) is greater than the flow rate of air passing through the front-side second heat exchange section (H2). Furthermore, because air flows from the front side of the casing (31) to the air inlet (32), the flow rate of air passing through the front-side first heat exchange section (H1) is greater than the flow rate of air passing through the rear-side heat exchange section (H3). Therefore, the flow rate of air passing through the irradiation region (R) is increased, and the ability to sterilize indoor air can be improved.

[0087] When air passes through the front first heat exchanger (H1), the fins (51) and the heat transfer tubes (52) straighten the air, and the distribution of the air flow rate in the air passing direction is made uniform. Therefore, when the irradiation region (R) is formed along the first outlet surface (O1) of the front first heat exchanger (H1), the air sterilization capability can be improved compared to when the irradiation region (R) is formed along the first inlet surface (I1).

[0088] The irradiation region (R) is disposed in the air flow path (34) between the front first heat exchange section (H1) and the indoor fan (42). Therefore, the irradiation region (R) can sterilize the indoor fan (42). Here, since the indoor fan (42) is rotating, the entire periphery of the indoor fan (42) can be sterilized. Furthermore, the irradiation region (R) is formed over a wide area from the first inner surface (35) to the second inner surface (36). Therefore, the entire longitudinal direction of the indoor fan (42), which is a cross-flow fan, can be sterilized.

[0089] (6) Effects of the embodiment (6-1) The irradiation unit (60) forms an ultraviolet irradiation region (R) along the first outlet surface (O1) of the front first heat exchanger (H1). The irradiation unit (60) includes an irradiation section (61) disposed at one end of the air flow path (34) in the first direction and irradiating ultraviolet light toward the other end in the first direction, and a first reflection section (70) disposed at the other end of the air flow path (34) in the first direction and reflecting the ultraviolet light emitted from the irradiation section (61) toward the one end in the first direction. The optical axis of the reflected light from the first reflection section (70) is shifted by a predetermined angle in the second direction with respect to the optical axis of the ultraviolet light from the irradiation section (61).

[0090] In this configuration, the irradiation section (61) of the irradiation unit (60) irradiates ultraviolet light from one end toward the other end in a first direction, which is the arrangement direction of the fins (51). The first reflecting section (70) reflects the ultraviolet light irradiated from the irradiation section (61) from the other end toward the one end in the first direction. At this time, the first reflecting section (70) reflects the ultraviolet light so that the optical axis of the ultraviolet light from the irradiation section (61) is shifted by a predetermined angle in a second direction, which is the longitudinal direction of the fins (51). Therefore, on the first outflow surface (O1) of the front first heat exchange section (H1), the irradiation area (R) of the ultraviolet light can be expanded in the arrangement direction of the fins (51) and the longitudinal direction of the fins (51). As a result, the air sterilization capability is improved.

[0091] In addition, the optical axis of the light reflected by the first reflecting portion (70) is shifted by a predetermined angle in the second direction with respect to the optical axis of the ultraviolet light from the irradiating portion (61), so that the light reflected by the first reflecting portion (70) is prevented from striking the irradiating portion (61), thereby suppressing deterioration of the components of the irradiating portion (61).

[0092] The optical axis of the ultraviolet light emitted by the irradiating unit (61) only needs to include a vector component in the first direction. The optical axis of the light reflected by the first reflecting unit (70) only needs to include a vector component that is shifted by a predetermined angle in the second direction with respect to the optical axis of the ultraviolet light from the irradiating unit (61).

[0093] (6-2) The casing (31) has a first inner surface (35) formed at one end of the air flow path (34) in the first direction, and a second inner surface (36) formed at the other end of the air flow path (34) in the first direction. The irradiation section (61) is supported by the first inner surface (35). The first reflection section (70) is supported by the second inner surface (36).

[0094] With this configuration, the irradiation region (R) can be formed across the entire area of ​​the air flow path (34) in the first direction. This irradiation region (R) is formed not only by the ultraviolet light emitted by the irradiating portion (61) but also by the ultraviolet light reflected by the first reflecting portion (70). This increases the area of ​​the irradiation region (R) for the air flowing through the air flow path (34), thereby increasing the linear velocity of the air passing through the irradiation region (R) and lengthening the residence time of the air. As a result, the sterilization effect of the air can be further improved.

[0095] The irradiation section (61) and the first reflection section (70) are located at the ends of the air flow path (34), and therefore, the presence of the irradiation section (61) and the first reflection section (70) can prevent an increase in flow path resistance of the air flow path (34).

[0096] (6-3) The casing (31) has a shape in which the longitudinal direction is the first direction, and therefore the irradiation region (R) can be further expanded in the first direction, which further increases the retention time of the air flowing through the irradiation region (R), thereby further improving the sterilization effect of the air.

[0097] (6-4) The air conditioner (10) further includes an indoor fan (42) arranged in the air flow path (34), and a control unit (C) that causes the irradiation unit (61) to irradiate ultraviolet light while the indoor fan (42) is in operation.

[0098] In this configuration, the air transported by the indoor fan (42) can be sterilized by ultraviolet light.

[0099] (6-5) The irradiation unit (60) forms an irradiation region (R) along the first outflow surface (O1) of the front first heat exchange section (H1).

[0100] In the air flow path (34), the flow rate of the air is easily made uniform and rectified at the first outlet surface (O1) of the front first heat exchange section (H1), which makes it possible to prevent a decrease in the sterilization ability of the air due to uneven distribution of the air or variations in the air speed in the ultraviolet irradiation region (R).

[0101] In addition, the fins (51) and the heat transfer tubes (52) themselves of the front first heat exchanger part (H1) can be sterilized by the ultraviolet light in the irradiation region (R).

[0102] The front first heat exchanger (H1) is located between the inlet (32) and the irradiation region (R), which prevents ultraviolet rays from the irradiation region (R) from leaking out of the casing (31) through the inlet (32).

[0103] (6-6) The indoor fan (42) is disposed downstream of the front first heat exchange section (H1) in the air flow path (34). The irradiation unit (60) forms an irradiation region (R) between the first outlet surface (O1) of the front first heat exchange section (H1) and the indoor fan (42).

[0104] In this configuration, ultraviolet light emitted from the irradiating section (61) is more likely to reach the entire circumference of the rotating fan (42), thereby improving the ability to eliminate microorganisms that grow on the surface of the indoor fan (42).

[0105] (6-7) An inlet (32) is formed in the upper part of the casing (31) for drawing room air outside the casing (31) into the air flow path (34). The heat exchanger (H) includes a first front heat exchanger (H1) disposed below the inlet (32) and a second front heat exchanger (H2) disposed below the first front heat exchanger (H1). The irradiation unit (60) forms an irradiation region (R) along the first outlet surface (O1) of the first front heat exchanger (H1).

[0106] Since the flow rate of air flowing through the front first heat exchange section (H1) is greater than the flow rate of air flowing through the front second heat exchange section (H2), the indoor air in the indoor space (I) can be efficiently sterilized by the irradiation region (R).

[0107] (6-8) The casing (31) has an inlet (32) formed in an upper portion thereof. The irradiation section (61) is disposed near the lower end of the front first heat exchange section (H1). This prevents ultraviolet light emitted from the irradiation section (61) from leaking out of the casing (31) through the inlet (32) located above the irradiation section (61). The irradiation section (61) may also be disposed near the upper end of the front first heat exchange section (H1).

[0108] (6-9) The irradiation unit (60) is disposed at one end in the first direction of the air flow path (34), and has a second reflecting section (80) that reflects the ultraviolet light reflected by the first reflecting section (70) toward the other end in the first direction. The optical axis of the reflected light of the second reflecting section (80) is shifted by a predetermined angle in the second direction with respect to the optical axis of the ultraviolet light of the first reflecting section (70).

[0109] In this configuration, the ultraviolet irradiation area (R) can be further expanded in the longitudinal direction of the fin (51).

[0110] The optical axis of the light reflected by the second reflecting portion (80) may include a vector component that is shifted by a predetermined angle in the second direction with respect to the optical axis of the light reflected by the first reflecting portion (70).

[0111] The first reflecting portion (70) has a curved first reflecting surface (71) recessed toward the other end in the first direction, and the second reflecting portion (80) has a curved second reflecting surface (81) recessed toward one end in the first direction.

[0112] In this configuration, the first reflecting surface (71) and the second reflecting surface (81) are formed in a curved shape, which makes it easier for the reflected ultraviolet light to remain between the first reflecting surface (71) and the second reflecting surface (81). This makes it possible to prevent the angle of the reflected ultraviolet light from being significantly tilted in the second direction. As a result, it is possible to prevent the ultraviolet light from leaking outside the flow path forming member (31).

[0113] (7) Variations The irradiation unit (60) may form an irradiation region (R) along, for example, the first inlet surface (I1) of the front first heat exchange section (H1). The irradiation section (61) is disposed near the upper end or the lower end of the front first heat exchange section (H1).

[0114] As shown in FIG. 8 , the irradiation unit (60) may form an irradiation region (R) along the second inlet surface (I1, I2) of the front second heat exchange section (H2). In this configuration, the longitudinal direction of the fins (51) of the front second heat exchange section (H2) corresponds to the second direction. The irradiation section (61) is disposed, for example, near the lower end of the front second heat exchange section (H2). The irradiation section (61) may also be disposed near the upper end of the front second heat exchange section (H2). The irradiation unit (60) may form an irradiation region (R) along the second outlet surface (O2) of the front second heat exchange section (H2). The irradiation section (61) is disposed near the upper end or the lower end of the front second heat exchange section (H2).

[0115] In this configuration, an irradiation region (R) is formed above the drain pan (43), which can suppress the growth of bacteria in the drain pan (43).In addition, ultraviolet light is less likely to leak to the outside of the casing (31) through the inlet (32).

[0116] The irradiation unit (60) may form an irradiation region (R) along the inlet or outlet surface of the rear heat exchange section (H3). The irradiation section (61) is disposed near the upper end or the lower end of the rear heat exchange section (H3).

[0117] (8) Other embodiments A separate flow path forming member for partitioning the air flow path (34) may be provided inside the casing (31). In this case, the flow path forming member inside the casing (31) may be formed with a first inner surface (35) for supporting the irradiation unit (61) and the second reflecting unit (80) and a second inner surface (36) for supporting the first reflecting unit (70). The flow path forming member may be any member that forms a surface that defines the air flow path (34). The flow path forming member (31) may be, for example, a partition plate separating the air flow path (34) from the electrical component compartment, a support plate for the heat exchanger (50), or a frame for a drain pan.

[0118] The heat transfer tube (52) does not have to be a circular tube, but may be a flat multi-hole tube.

[0119] The light distribution control section of the irradiation section (61) may be the reflector (63) alone, the lens (64) alone, or another element that can distribute the ultraviolet light of the LED (62).

[0120] The control unit (C) may cause the irradiation unit (60) to irradiate ultraviolet light while the fan (42) is stopped, which can suppress the growth of bacteria while the air conditioner (10) is stopped.

[0121] The first reflecting surface (71) of the first reflecting section (70) may be flat. In this case, it is preferable to tilt the first reflecting surface (71) in the second direction, or to irradiate ultraviolet light from the irradiating section (61) toward the first reflecting surface (71) at an angle in the second direction. The second reflecting surface (81) of the second reflecting section (80) may be flat. In this case, it is preferable to tilt the second reflecting surface (81) in the second direction, or to irradiate ultraviolet light from the irradiating section (61) toward the second reflecting surface (81) at an angle in the second direction.

[0122] The first reflecting portion (70) and the second reflecting portion (80) do not have to be rectangular in shape with the second direction as the longitudinal direction, but may be square in shape or rectangular in shape with the second direction as the lateral direction.

[0123] The irradiation unit (60) may form an ultraviolet irradiation region (R) along the outlet surfaces (O1, O2) and inlet surfaces (I1, I2) of the outdoor heat exchanger (22) of the outdoor unit (20).

[0124] The air conditioner (10) may be an indoor multi-type having two or more indoor units (30) or an outdoor multi-type having two or more outdoor units (20). The air conditioner (10) does not have to be a separate type, but may be an integrated type in which a user-side heat exchanger and a heat-source-side heat exchanger are housed in a single casing. The air conditioner (10) does not have to be a stationary type. Specifically, the air conditioner (10) may be a container refrigeration system that cools the interior space of a transport container, or may be an air conditioner for a vehicle.

[0125] The air conditioner (10) may be installed above the ceiling. In this case, a fan is disposed upstream of a heat exchanger inside the casing (31) of the air conditioner (10). The irradiation unit (60) is disposed, for example, between the heat exchanger and the fan.

[0126] Although the embodiments and modifications have been described above, it will be understood that various changes in form and details are possible without departing from the spirit and scope of the claims. Elements of the above embodiments, modifications, and other embodiments may be combined or substituted as appropriate.

[0127] Although the embodiments and modifications have been described above, it will be understood that various modifications in form and details are possible without departing from the spirit and scope of the claims. Furthermore, the above embodiments, modifications, and other embodiments may be combined or substituted as appropriate as long as the functionality of the subject matter of the present disclosure is not impaired.

[0128] The terms "first," "second," "third," etc. mentioned above are used to distinguish the terms to which these terms are attached, and do not limit the number or order of the terms. [Industrial Applicability]

[0129] INDUSTRIAL APPLICABILITY As described above, the present disclosure is useful for air conditioning apparatuses. [Explanation of symbols]

[0130] 10 Air conditioning equipment 31 Casing (flow path forming member) 32 Intake port 34 Air flow path 35 First inner surface 36 Second inner surface 42 Indoor fan (fan) 51 Finn 52 Heat transfer tube 60 irradiation units 61 Irradiation unit 70 1st reflection section 71 1st reflective surface 80 2nd reflection section 81 Second reflective surface C control section H Heat exchange section H1 Front first heat exchange section (first heat exchange section) H2 Front 2nd heat exchange section (2nd heat exchange section) I1,I2 Inflow surface O1,O2 outflow surface R irradiation area

Claims

1. a flow path forming member (31) that forms an air flow path (34) through which air flows; a heat exchange section (H) that is disposed in the air flow path (34), the heat exchange section (H) having a plurality of fins (51) that are arranged in a first direction and have a longitudinal direction in the second direction and a heat transfer tube (52) that penetrates the plurality of fins (51); an irradiation unit (60) that forms an ultraviolet irradiation region (R) along the air inflow surface (I1, I2) of the heat exchange section (H) or the air outflow surface (O1, O2) of the heat exchange section (H), The irradiation unit (60) an irradiation section (61) disposed at one end of the air flow path (34) in the first direction and configured to irradiate ultraviolet light toward the other end in the first direction; a first reflecting section (70) that is arranged on the other end side of the air flow path (34) in the first direction and that reflects the ultraviolet light irradiated from the irradiating section (61) toward one end side in the first direction, The optical axis of the reflected light from the first reflecting portion (70) is shifted by a predetermined angle in the second direction with respect to the optical axis of the ultraviolet light from the irradiating portion (61). Air conditioning equipment.

2. The flow path forming member (31) a first inner surface (35) formed on one end side of the air flow path (34) in the first direction; a second inner surface (36) formed on the other end side of the air flow path (34) in the first direction, the irradiation portion (61) is supported by the first inner surface (35), The first reflecting portion (70) is supported by the second inner surface (36). The air conditioning apparatus according to claim 1.

3. The flow path forming member (31) has a shape whose longitudinal direction is in the first direction. The air conditioning apparatus according to claim 2.

4. a fan (42) disposed in the air flow path (34); a control unit (C) that controls the irradiation unit (61) to irradiate ultraviolet light while the fan (42) is in operation. The air conditioning apparatus according to any one of claims 1 to 3.

5. The irradiation unit (60) forms the irradiation region (R) along the outflow surface (O1, O2) of the heat exchange section (H). The air conditioning apparatus according to claim 4.

6. the fan (42) is disposed in the air flow path (34) downstream of the heat exchange section (H); The irradiation unit (60) forms the irradiation region (R) between the outlet surfaces (O1, O2) of the heat exchange section (H) and the fan (42). The air conditioning apparatus according to claim 5.

7. An intake port (32) is formed at an upper portion of the flow path forming member (31) for sucking air outside the flow path forming member (31) into the air flow path (34), The heat exchange section (H) a first heat exchange section (H1) disposed below the suction port (32); a second heat exchange section (H2) disposed below the first heat exchange section (H1), The irradiation unit (60) forms the irradiation region (R) along the outflow surface (O1, O2) of the first heat exchange section (H1). The air conditioning apparatus according to claim 4.

8. An intake port (32) is formed at an upper portion of the flow path forming member (31) for sucking air from outside the flow path forming member (31) into the air flow path (34), The irradiation part (61) is located lower than the first reflection part (70). The air conditioning apparatus according to any one of claims 1 to 3.

9. The irradiation unit (60) a second reflecting portion (80) that is disposed at one end side in the first direction of the air flow path (34) and that reflects the ultraviolet light reflected by the first reflecting portion (70) toward the other end side in the first direction; The optical axis of the reflected light from the second reflecting portion (80) is shifted by a predetermined angle in the second direction with respect to the optical axis of the ultraviolet light from the first reflecting portion (70). The air conditioning apparatus according to any one of claims 1 to 3.

10. The first reflecting portion (70) has a curved first reflecting surface (71) recessed toward the other end in the first direction, The second reflecting portion (80) has a curved second reflecting surface (81) recessed toward one end side in the first direction. The air conditioning apparatus according to claim 9.

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