Indoor unit

Abstract

This prevents mold and bacteria from growing on the positive pressure surface of the blades of a cross-flow fan. [Solution] The cross-flow fan (40) has multiple blade sections (45) having a positive pressure surface (46) arranged at intervals in the circumferential direction. The irradiation unit (50) irradiates ultraviolet light toward the cross-flow fan (40). The irradiation unit (50) has an irradiation section (51) that irradiates ultraviolet light and a light-collecting section (52) that collects the ultraviolet light irradiated from the irradiation section (51). The optical axis (55) of the ultraviolet light that is collected by the light-collecting section (52) and directed toward the cross-flow fan (40) coincides with the positive pressure surface (46) of the blade section (45).

Description

Technical Field

[0001] The present disclosure relates to an indoor unit.

Background Art

[0002] Patent Document 1 discloses an air conditioner including a cross-flow fan (blower fan), a lower guide that guides air flowing below the cross-flow fan to an air outlet, and a sterilization lamp disposed in the lower guide and irradiating ultraviolet rays toward the cross-flow fan.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

[0004] By the way, when ultraviolet rays are irradiated over a wide range toward the cross-flow fan, while the negative pressure surface (outer surface) of the blade portion of the cross-flow fan is irradiated with ultraviolet rays, it becomes difficult for the positive pressure surface (inner surface) of the blade portion to be irradiated with ultraviolet rays, and there is a problem that mold and bacteria growing on the positive pressure surface of the blade portion cannot be suppressed.

[0005] An object of the present disclosure is to suppress the generation of mold and bacteria on the positive pressure surface of the blade portion of the cross-flow fan.

Problems to be Solved by the Invention

[0006] A first aspect of the present disclosure is an indoor unit comprising a cross-flow fan (40) having multiple blade sections (45) having a positive pressure surface (46) arranged at intervals in the circumferential direction, and an irradiation unit (50) that irradiates ultraviolet light toward the cross-flow fan (40), wherein the irradiation unit (50) has an irradiation section (51) that irradiates the ultraviolet light and a light-collecting section (52) that collects the ultraviolet light irradiated from the irradiation section (51), and the optical axis (55) of the ultraviolet light toward the cross-flow fan (40) after being collected by the light-collecting section (52) coincides with the positive pressure surface (46) of the blade section (45).

[0007] In the first embodiment, by aligning the ultraviolet light axis (55) with the positive pressure surface (46) of the wing portion (45), it becomes easier to irradiate the positive pressure surface (46) with ultraviolet light, and the growth of mold and bacteria on the positive pressure surface (46) can be efficiently suppressed.

[0008] A second aspect of this disclosure is an indoor unit of the first aspect, wherein the inner end of the positive pressure surface (46) located on the inner circumference side of the cross-flow fan (40) is defined as P1, the outer end of the positive pressure surface (46) located on the outer circumference side of the cross-flow fan (40) is defined as P2, the intermediate position on the positive pressure surface (46) between the inner end P1 and the outer end P2 is defined as M, the first position P3 is a position on the positive pressure surface (46) a predetermined first distance L1 away from the intermediate position M toward the inner end P1, and the second position P4 is a position on the positive pressure surface (46) a predetermined second distance L2 away from the intermediate position M toward the outer end P2, and the optical axis (55) of the ultraviolet light overlaps the region on the positive pressure surface (46) between the first position P3 and the second position P4.

[0009] In the second embodiment, by overlapping the ultraviolet light axis (55) within the region between the first position P3 and the second position P4 on the positive pressure surface (46), mold and bacteria growing on the positive pressure surface (46) can be efficiently suppressed.

[0010] A third aspect of this disclosure is an indoor unit of the second aspect, wherein the length from the inner end P1 to the outer end P2 on the positive pressure surface (46) is L, and the condition L1 = L2 = L / 4 is satisfied.

[0011] In the third embodiment, by overlapping the ultraviolet light axis (55) within the region that satisfies the above-described conditions, mold and bacteria growing on the positive pressure surface (46) can be efficiently suppressed.

[0012] A fourth aspect of this disclosure is the indoor unit of the second aspect, wherein the optical axis (55) of the ultraviolet light coincides with the intermediate position M on the positive pressure surface (46).

[0013] In the fourth embodiment, by aligning the ultraviolet light axis (55) with the intermediate position M on the positive pressure surface (46), mold and bacteria growing on the positive pressure surface (46) can be suppressed even more efficiently.

[0014] A fifth aspect of the present disclosure is an indoor unit of any one of the first to fourth aspects, wherein the irradiation unit (50) is positioned to overlap the cross-flow fan (40) when viewed from the radial direction of the cross-flow fan (40).

[0015] In the fifth embodiment, ultraviolet light can be irradiated onto the positive pressure surface (46) of the blade (45) from a position that overlaps with the cross-flow fan (40) when viewed from the radial direction of the cross-flow fan (40).

[0016] A sixth aspect of the present disclosure is an indoor unit of the fifth aspect, wherein the cross-flow fan (40) comprises a plurality of fan blocks (41) having blade portions (45) arranged at intervals in the axial direction, and partition plates (42) arranged between adjacent fan blocks (41).

[0017] In the sixth embodiment, even in a cross-flow fan (40) in which a partition plate (42) is placed between adjacent fan blocks (41), ultraviolet rays are not blocked by the partition plate (42), and ultraviolet rays can be irradiated onto the positive pressure surface (46).

[0018] The seventh aspect of the present disclosure is that in the indoor unit according to the fifth or sixth aspect, a plurality of the irradiation units (50) are arranged at intervals in the axial direction of the cross-flow fan (40).

[0019] In the seventh aspect, the plurality of irradiation units (50) can irradiate ultraviolet rays over a wide range in the axial direction of the cross-flow fan (40).

[0020] The eighth aspect of the present disclosure is that in the indoor unit according to any one of the first to fifth aspects, the irradiation unit (50) has a reflection part (58) that reflects the ultraviolet rays condensed by the condenser part (52) toward the positive pressure surface (46).

[0021] In the eighth aspect, by reflecting the ultraviolet rays toward the positive pressure surface (46) by the reflection part (58), the degree of freedom in the layout of the irradiation part (51) and the condenser part (52) of the irradiation unit (50) can be increased.

Brief Description of the Drawings

[0022] [Figure 1] FIG. 1 is a refrigerant circuit diagram of an air conditioner according to Embodiment 1. [Figure 2] FIG. 2 is a side cross-sectional view showing the configuration of the indoor unit. [Figure 3] FIG. 3 is a plan view showing the arrangement of the irradiation unit with respect to the cross-flow fan. [Figure 4] FIG. 4 is a side cross-sectional view showing a state where the optical axis of ultraviolet rays is overlapped with the positive pressure surface of the wing part. [Figure 5] FIG. 5 is a plan view showing the arrangement of the irradiation unit with respect to the cross-flow fan according to Embodiment 2. [Figure 6] FIG. 6 is a side cross-sectional view showing a state where the optical axis of ultraviolet rays is overlapped with the positive pressure surface of the wing part. [Figure 7] FIG. 7 is a plan view showing the arrangement of the irradiation unit with respect to the cross-flow fan according to Embodiment 3. [Figure 8] FIG. 8 is a side cross-sectional view showing a state where the optical axis of ultraviolet rays is overlapped with the positive pressure surface of the wing part.

Mode for Carrying Out the Invention

[0023] 《Embodiment 1》 As shown in FIG. 1, the air conditioner (10) includes an outdoor unit (20), an indoor unit (30), a first connecting pipe (12), and a second connecting pipe (13). The refrigerant circuit (11) is configured by connecting the outdoor unit (20) and the indoor unit (30) to each other via the first connecting pipe (12) and the second connecting pipe (13). The refrigerant circuit (11) performs a refrigeration cycle by circulating the refrigerant.

[0024] The outdoor unit (20) is installed outdoors. The outdoor unit (20) has an outdoor casing (20a), a compressor (21), an outdoor heat exchanger (22), an expansion valve (23), a four-way switching valve (24), an outdoor fan (25), and a control unit (15).

[0025] The compressor (21) compresses the inhaled refrigerant and discharges the compressed refrigerant. The outdoor heat exchanger (22) exchanges heat between the refrigerant flowing inside the outdoor heat exchanger (22) and the outdoor air conveyed 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 the cooling operation and the heating operation.

[0026] The control unit (1) controls the air conditioner (10). The control unit (15) is incorporated in an air conditioning controller for controlling the air conditioner (10). The control unit (15) controls, for example, 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 and rotation speed of the cross-flow fan (40), the opening degree of the expansion valve (23), the state of the four-way switching valve (24), etc.

[0027] The indoor unit (30) is installed indoors. As shown in Figure 2, the indoor unit (30) includes a casing (31), an indoor heat exchanger (35), an air filter (36), a drain pan (37), a flap (38), a cross-flow fan (40) as an indoor fan, and an irradiation unit (50).

[0028] The casing (31) is formed in a hollow shape that extends in the depth direction of the paper in Figure 2. An intake port (32) is formed on the upper surface of the casing (31). An outlet port (33) is formed on the lower surface of the casing (31).

[0029] An air passage (34) is formed inside the casing (31), extending from the intake port (32) to the outlet port (33). The intake port (32) is an opening for drawing indoor air into the air passage (34). The outlet port (33) is an opening for blowing the air from the air passage (34) into the room.

[0030] The air filter (36) is positioned along the intake port (32). The air filter (36) is a mesh-like material. The air filter (36) collects dust particles in the air drawn in from the intake port (32).

[0031] The indoor heat exchanger (35) is located downstream of the air filter (36) in the air passage (34). The indoor heat exchanger (35) is, for example, a fin-and-tube type heat exchanger. The indoor heat exchanger (35) exchanges heat between the refrigerant flowing inside the indoor heat exchanger (35) and the indoor air transported by the cross-flow fan (40).

[0032] The cross-flow fan (40) is positioned downstream of the indoor heat exchanger (35) in the air passage (34). The indoor heat exchanger (35) is positioned to surround the cross-flow fan (40). The cross-flow fan (40) is rotationally driven by a fan motor (48) (see Figure 1). Details of the cross-flow fan (40) will be described later.

[0033] The drain pan (37) is located below the indoor heat exchanger (35). The drain pan (37) is a tray that receives water generated inside the casing (31). The drain pan (37) receives condensation water generated on the surface of the indoor heat exchanger (35).

[0034] The flap (38) adjusts the direction of the air blown out from the outlet (33). The flap (38) adjusts the vertical direction of the air blown out. The flap (38) may also adjust the horizontal direction of the air blown out. The angle of the flap (38) is controlled by the control unit (15).

[0035] <Operation of the air conditioning system> The air conditioning unit (10) performs both cooling and heating operations. During cooling operation, the four-way switching valve (24) enters the first state (shown by the solid line in Figure 1). In Figure 1, the flow of refrigerant during cooling operation is shown by the solid arrow.

[0036] During cooling operation, the refrigerant compressed by the compressor (21) releases heat in the outdoor heat exchanger (22), and is then depressurized by the expansion valve (23). The depressurized refrigerant evaporates in the indoor heat exchanger (35). The air cooled by the indoor heat exchanger (35) is supplied to the room. The refrigerant evaporated in the indoor heat exchanger (35) is drawn back into the compressor (21).

[0037] During heating operation, the four-way switching valve (24) enters the second state (shown by the dashed line in Figure 1). Figure 1 shows the refrigerant flow during heating operation, indicated by the dashed arrows.

[0038] During heating operation, the refrigerant compressed by the compressor (21) releases heat in the indoor heat exchanger (35) and is then depressurized by the expansion valve (23). The air heated by the indoor heat exchanger (35) is supplied to the room. The depressurized refrigerant evaporates in the outdoor heat exchanger (22) and is then drawn into the compressor (21).

[0039] <Cross-flow fan> As shown in Figure 3, the cross-flow fan (40) has a plurality of fan blocks (41), partition plates (42), and a closing plate (43). The fan blocks (41), partition plates (42), and closing plates (43) are formed integrally.

[0040] The fan block (41) has multiple blade sections (45). The blade sections (45) are spaced apart in the circumferential direction of the cross-flow fan (40) (see Figure 4). Multiple fan blocks (41) are spaced apart in the axial direction of the cross-flow fan (40).

[0041] The partition plate (42) is formed from a ring-shaped plate material (see Figure 2). The partition plate (42) is placed between adjacent fan blocks (41). The closing plate (43) is formed from a disc-shaped member. The closing plate (43) is placed at both axial ends of the cross-flow fan (40). The closing plate (43) is provided with a rotating shaft (44).

[0042] As shown in Figure 2, the cross-flow fan (40) rotates around the axis (O) of the rotation shaft (44). The cross-flow fan (40) rotates clockwise in Figure 2.

[0043] As shown in Figure 4, the blade portion (45) is formed in a curved shape that is concave toward the rear in the direction of rotation. The blade portion (45) has a positive pressure surface (46) and a negative pressure surface (47). The positive pressure surface (46) is the surface that generates positive pressure on the side of the cross-flow fan (40) in the direction of rotation. The negative pressure surface (47) is the surface that generates negative pressure on the opposite side of the cross-flow fan (40) in the direction of rotation.

[0044] Incidentally, on the positive pressure surface (46) of the wing section (45), the pressure increases in order to push out the air. As a result, dust and debris are easily pressed against and adhere to the positive pressure surface (46) of the wing section (45) due to the positive pressure. Furthermore, since the positive pressure surface (46) of the wing section (45) is curved in a way that it is concave toward the rear in the direction of rotation, moisture tends to accumulate on the positive pressure surface (46), making it easy for mold and bacteria to grow.

[0045] Therefore, in this embodiment, it is possible to suppress the growth of mold and bacteria on the positive pressure surface (46) of the blade portion (45) of the cross-flow fan (40).

[0046] <Irradiation Unit> As shown in Figure 2, the indoor unit (30) is equipped with an irradiation unit (50). The irradiation unit (50) irradiates ultraviolet light toward the cross-flow fan (40). In the example shown in Figure 2, two irradiation units (50) are provided spaced apart in the circumferential direction of the cross-flow fan (40). The two irradiation units (50) irradiate ultraviolet light toward different blade sections (45) of the cross-flow fan (40).

[0047] As shown in Figure 4, the irradiation unit (50) includes an irradiation section (51), a light-gathering section (52), and a control board (53).

[0048] The irradiation unit (51) emits ultraviolet light. The irradiation unit (51) is composed of, for example, an LED (Light Emitting Diode). The peak wavelength of the ultraviolet light emitted by the irradiation unit (51) is, for example, 280 nm or less, preferably 255 nm to 275 nm. This improves the sterilization effect.

[0049] Furthermore, the peak wavelength of the ultraviolet light emitted by the irradiation unit (51) may be 230 nm or less. This improves the safety of human exposure in the event that ultraviolet light leaks outside the casing (31).

[0050] The light-gathering unit (52) focuses the ultraviolet light emitted from the irradiation unit (51) in a diffused manner. The light-gathering unit (52) is composed of, for example, a lens. As a result, ultraviolet light is emitted from the irradiation unit (50) along a predetermined optical axis (55).

[0051] Here, the optical axis (55) is the high-intensity ultraviolet ray focused by the light-gathering section (52). In the example shown in Figure 4, the optical axis (55) is represented by a straight line passing through the center of the lens of the light-gathering section (52) and perpendicular to the lens surface.

[0052] The timing of the irradiation of ultraviolet light by the irradiation unit (50) may be performed with the rotation of the cross-flow fan (40) stopped, or with the rotation of the cross-flow fan (40) running.

[0053] The control board (53) controls the irradiation unit (51). The control board (53) is included in the control unit (15). The control board (53) controls the ON / OFF switching of the irradiation unit (51) and the output of the irradiation unit (51). The output of the irradiation unit (51) here includes the intensity, illuminance, and irradiation time of ultraviolet light emitted from the irradiation unit (51). The output of the irradiation unit (51) includes the ON time, OFF time, and period in the operation of intermittently switching ON / OFF.

[0054] As shown in Figure 3, the irradiation unit (50) is positioned so as to overlap the cross-flow fan (40) when viewed from the radial direction of the cross-flow fan (40). Multiple irradiation units (50) are arranged at intervals along the axial direction of the cross-flow fan (40). In the example shown in Figure 3, two irradiation units (50) are arranged at intervals along the axial direction of the cross-flow fan (40).

[0055] The number and arrangement of the irradiation units (50) are merely examples and are not limited to these. For example, a configuration with only one irradiation unit (50) or a configuration with three or more irradiation units (50) is also possible.

[0056] In this embodiment, as shown in Figure 4, the arrangement of the irradiation unit (50) is designed so that the optical axis (55) of the ultraviolet light that is focused by the light concentrator (52) and directed toward the cross-flow fan (40) overlaps with the positive pressure surface (46) of the blade (45).

[0057] Specifically, let P1 be the inner end of the positive pressure surface (46) located on the inner circumference side of the cross-flow fan (40), P2 be the outer end of the positive pressure surface (46) located on the outer circumference side of the cross-flow fan (40), M be the midpoint between the inner end P1 and the outer end P2 on the positive pressure surface (46), P3 be the first position P3, located a predetermined first distance L1 away from the midpoint M toward the inner end P1 on the positive pressure surface (46), P4 be the second position P4, located a predetermined second distance L2 away from the midpoint M toward the outer end P2 on the positive pressure surface (46), and L be the length from the inner end P1 to the outer end P2 on the positive pressure surface (46).

[0058] The irradiation unit (50) is positioned such that the ultraviolet light axis (55) overlaps with the region between the first position P3 and the second position P4 on the positive pressure surface (46). For example, the irradiation unit (50) is positioned such that the condition L1=L2=L / 4 is satisfied.

[0059] In the example shown in Figure 4, the ultraviolet light axis (55) is aligned with the intermediate position M on the positive pressure surface (46).

[0060] -Effects of Embodiment 1- According to this embodiment, by aligning the ultraviolet light axis (55) with the positive pressure surface (46) of the wing portion (45), it becomes easier to irradiate the positive pressure surface (46) with ultraviolet light, and the growth of mold and bacteria on the positive pressure surface (46) can be efficiently suppressed.

[0061] According to this embodiment, by aligning the ultraviolet light axis (55) with the region between the first position P3 and the second position P4 on the positive pressure surface (46), mold and bacteria growing on the positive pressure surface (46) can be efficiently suppressed.

[0062] According to this embodiment, by aligning the ultraviolet light axis (55) with a region that satisfies the condition L1=L2=L / 4, mold and bacteria growing on the positive pressure surface (46) can be efficiently suppressed.

[0063] According to this embodiment, by aligning the optical axis (55) of ultraviolet light with the intermediate position M on the positive pressure surface (46), mold and bacteria growing on the positive pressure surface (46) can be suppressed even more efficiently.

[0064] According to this embodiment, ultraviolet light can be irradiated onto the positive pressure surface (46) of the blade portion (45) from a position that overlaps with the cross-flow fan (40) when viewed from the radial direction of the cross-flow fan (40).

[0065] According to this embodiment, even in a cross-flow fan (40) in which a partition plate (42) is placed between adjacent fan blocks (41), ultraviolet rays are not blocked by the partition plate (42), and ultraviolet rays can be irradiated onto the positive pressure surface (46).

[0066] According to this embodiment, ultraviolet light can be irradiated over a wide area in the axial direction of the cross-flow fan (40) by multiple irradiation units (50).

[0067] Embodiment 2 In the following description, the same reference numerals are used for parts that are the same as those in Embodiment 1, and only the differences will be described.

[0068] As shown in Figure 5, the irradiation unit (50) includes an irradiation section (51), a light-gathering section (52), a control board (53), and a reflecting section (58). The irradiation section (51), the light-gathering section (52), and the control board (53) are positioned at a distance from each other in the axial and radial directions of the cross-flow fan (40).

[0069] The reflecting parts (58) are positioned so as to overlap the cross-flow fan (40) when viewed from the radial direction of the cross-flow fan (40). The reflecting parts (58) are, for example, reflective mirrors. Multiple reflecting parts (58) are arranged at intervals along the axial direction of the cross-flow fan (40). In the example shown in Figure 5, four reflecting parts (58) are arranged at intervals along the axial direction of the cross-flow fan (40). The four reflecting parts (58) are arranged such that the distances from each reflecting part (58) to the cross-flow fan (40) are different.

[0070] The light-gathering section (52) focuses the ultraviolet light that is diffused from the irradiation section (51). The reflecting section (58) reflects the ultraviolet light focused by the light-gathering section (52) toward the positive pressure surface (46) of the blade section (45). The optical axis (55) of the ultraviolet light that is reflected by the reflecting section (58) and heads toward the cross-flow fan (40) coincides with the positive pressure surface (46) of the blade section (45) (see Figure 6).

[0071] -Effects of Embodiment 2- According to this embodiment, by reflecting ultraviolet light toward the positive pressure surface (46) using the reflective portion (58), the degree of freedom in the layout of the irradiation portion (51) and the light-collecting portion (52) of the irradiation unit (50) can be increased.

[0072] Embodiment 3 As shown in Figure 7, the irradiation unit (50) includes an irradiation section (51), a light-gathering section (52), and a control board (not shown). The irradiation unit (50) is positioned to overlap the cross-flow fan (40) when viewed from the radial direction of the cross-flow fan (40).

[0073] The irradiation unit (51) is composed of, for example, a fluorescent lamp that emits ultraviolet light. The irradiation unit (51) extends along the axial direction of the cross-flow fan (40). The light-collecting unit (52) extends between the irradiation unit (51) and the cross-flow fan (40) along the axial direction of the cross-flow fan (40).

[0074] The light-gathering unit (52) focuses the ultraviolet light that is diffused from the irradiation unit (51). The optical axis (55) of the ultraviolet light that is focused by the light-gathering unit (52) and heads toward the cross-flow fan (40) coincides with the positive pressure surface (46) of the blade section (45) (see Figure 8).

[0075] -Effects of Embodiment 3- According to this embodiment, by aligning the ultraviolet light axis (55) with the positive pressure surface (46) of the wing portion (45), it becomes easier to irradiate the positive pressure surface (46) with ultraviolet light, and the growth of mold and bacteria on the positive pressure surface (46) can be efficiently suppressed.

[0076] Other embodiments While 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. Furthermore, elements of the embodiments, modifications, and other embodiments described above may be combined or substituted as appropriate. The terms "first," "second," "third," etc., described above are used to distinguish the phrases to which these terms are attached, and do not limit the number or order of such phrases. [Industrial applicability]

[0077] As explained above, this disclosure is useful for indoor units. [Explanation of Symbols]

[0078] 30 Indoor unit 40 Cross-flow fan 41 Fan Block 42 partition plates 45 Wings 46 Positive pressure surface 50 irradiation units 51 Irradiation area 52 Light-gathering section 55 Optical axis 58 Reflector

Claims

1. A cross-flow fan (40) has multiple blade sections (45) having a positive pressure surface (46) arranged at intervals in the circumferential direction, The system includes an irradiation unit (50) that irradiates ultraviolet light toward the cross-flow fan (40), The irradiation unit (50) is The irradiation unit (51) that irradiates ultraviolet light, It has a light-gathering unit (52) that collects the ultraviolet light irradiated from the irradiation unit (51), The optical axis (55) of the ultraviolet light, which is focused by the light-gathering section (52) and directed toward the cross-flow fan (40), coincides with the positive pressure surface (46) of the blade section (45). Indoor unit.

2. In the indoor unit of claim 1, The inner end of the positive pressure surface (46) located on the inner circumference side of the cross-flow fan (40) is defined as P1, the outer end of the positive pressure surface (46) located on the outer circumference side of the cross-flow fan (40) is defined as P2, the midpoint between the inner end P1 and the outer end P2 on the positive pressure surface (46) is defined as M, the first position P3 is a predetermined first distance L1 away from the midpoint M on the positive pressure surface (46) toward the inner end P1, and the second position P4 is a predetermined second distance L2 away from the midpoint M on the positive pressure surface (46) toward the outer end P2. The optical axis (55) of the ultraviolet light overlaps the region between the first position P3 and the second position P4 on the positive pressure surface (46). Indoor unit.

3. In the indoor unit of claim 2, Let L be the length from the inner end P1 to the outer end P2 on the positive pressure surface (46). L1 = L2 = L / 4 The conditions are met Indoor unit.

4. In the indoor unit of claim 2, The optical axis (55) of the ultraviolet light coincides with the intermediate position M on the positive pressure surface (46). Indoor unit.

5. In any one of the indoor units according to claims 1 to 4, The irradiation unit (50) is positioned so as to overlap the cross-flow fan (40) when viewed from the radial direction of the cross-flow fan (40). Indoor unit.

6. In the indoor unit of claim 5, The aforementioned cross-flow fan (40) Multiple fan blocks (41) having the blade portion (45) are arranged at intervals in the axial direction, A partition plate (42) is positioned between adjacent fan blocks (41), Indoor unit.

7. In the indoor unit of claim 5, Multiple irradiation units (50) are arranged at intervals in the axial direction of the cross-flow fan (40). Indoor unit.

8. In any one of the indoor units according to claims 1 to 4, The irradiation unit (50) has a reflecting section (58) that reflects the ultraviolet light focused by the light concentrating section (52) toward the positive pressure surface (46). Indoor unit.

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