Indoor unit and air conditioning device

Abstract

The invention provides an indoor unit and an air-conditioning device, which can irradiate ultraviolet rays to conditioned air and can suppress the generation of noise caused by the arrangement of an ultraviolet module. The indoor unit includes a cross-flow fan, a heat exchanger, and an ultraviolet module. The cross-flow fan generates an airflow. The heat exchanger is a heat exchanger through which an air flow passes. The ultraviolet module has a light emitting diode that irradiates ultraviolet light to a ventilation path through which the air flow that has passed through the heat exchanger passes. A first partition portion provided on one side in the longitudinal direction of the cross-flow fan partitions one side in the longitudinal direction of the ventilation path. The ultraviolet module is provided in the ventilation path, and is provided in the longitudinal direction at a position closer to the side than the surface of the first partition section facing the ventilation path.

Description

Technical Field

[0001] The present invention relates to an indoor unit and an air conditioning device. Background Art

[0002] Patent document 1 (Japanese Patent Publication No. 2022-160292) discloses an indoor unit for an air conditioner, which has an ultraviolet irradiation device at the intake port or the blow-out port inside the shell. The ultraviolet irradiation device has a light-emitting diode for irradiating ultraviolet rays and a light distribution control unit for converting the light distribution of the ultraviolet rays into parallel light.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2022-160292

[0006] Indoor units using crossflow fans are known to generate noise (known as NZ noise, etc.) when the incoming airflow passes through the crossflow fan or components arranged near the crossflow fan. In the indoor unit disclosed in Patent Document 1, depending on the arrangement of the light-emitting diodes and the ultraviolet module including the light-emitting diodes, the airflow may be obstructed by the ultraviolet module, generating noise. Therefore, there is room for improvement in the arrangement of the ultraviolet module. Summary of the Invention

[0007] An object of the present disclosure is to provide an indoor unit and an air conditioner that can irradiate conditioned air with ultraviolet rays and suppress the generation of noise caused by the arrangement of an ultraviolet module.

[0008] The indoor unit of the first aspect is an indoor unit of an air conditioner, and includes a cross-flow fan, a heat exchanger, and an ultraviolet module.

[0009] The cross-flow fan generates airflow. The heat exchanger is a heat exchanger through which the airflow passes. The ultraviolet module includes a light-emitting diode that irradiates ultraviolet light onto the ventilation path through which the airflow passing through the heat exchanger passes.

[0010] A first partition provided on one side of the cross flow fan in the longitudinal direction partitions one side of the ventilation path in the longitudinal direction. The ultraviolet module is provided in the ventilation path and is provided on one side of the surface of the first partition facing the ventilation path in the longitudinal direction.

[0011] In this indoor unit, the UV module is positioned to the side of the surface of the first partition facing the ventilation path, thereby not obstructing the flow of air (conditioned air) flowing into the crossflow fan. Consequently, the indoor unit can irradiate the conditioned air with UV rays while suppressing noise generated by the UV module's placement.

[0012] The indoor unit according to the second aspect is the indoor unit according to the first aspect, wherein the heat exchanger includes a plurality of heat transfer fins arranged at predetermined intervals in the longitudinal direction, and the ultraviolet module is arranged outside a fin arrangement region in which the plurality of heat transfer fins are arranged in the longitudinal direction.

[0013] According to this indoor unit, the ultraviolet module does not hinder the smooth flow of the airflow passing through the fin arrangement region, and thus it is possible to suppress a decrease in the heat exchange efficiency of the heat exchanger.

[0014] The indoor unit according to a third aspect is the indoor unit according to the first aspect or the second aspect, wherein the first partition is made of resin.

[0015] According to this indoor unit, since the ultraviolet module is fixed to the first partition portion made of resin having low thermal conductivity, it is possible to suppress heating of the ultraviolet module by heat from the heat exchanger during heating operation.

[0016] The indoor unit according to a fourth aspect is the indoor unit according to any one of the first to third aspects, wherein the ultraviolet module is arranged at a position overlapping with a rotor included in a motor that drives the cross flow fan when viewed from the front.

[0017] The indoor unit according to a fifth aspect is the indoor unit according to any one of the first to fourth aspects, wherein the indoor unit further includes a reflecting member and a second partition.

[0018] The reflective member reflects ultraviolet light emitted from the ultraviolet module. The second partition is disposed on the other side of the ventilation path in the longitudinal direction, and together with the first partition, partitions the ventilation path. The reflective member is fixed to the second partition so as not to protrude from the second partition into the ventilation path.

[0019] According to this indoor unit, since the reflecting member is not disposed in the ventilation path, the generation of noise due to the reflecting member can also be suppressed.

[0020] The indoor unit according to a sixth aspect is the indoor unit according to any one of the first to fifth aspects, wherein the reflecting member is arranged at a position overlapping with a rotor included in a motor that drives the cross flow fan when viewed from the front.

[0021] A seventh aspect of the indoor unit is the indoor unit according to any one of the first to sixth aspects, wherein the ultraviolet module is arranged at a position such that the shortest distance between the optical axis of the light-emitting diode and the cross-flow fan is greater than the shortest distance between the heat exchanger and the cross-flow fan.

[0022] The crossflow fan, which is larger and more complex than the UV module, is more likely to cause noise than the UV module. In this indoor unit, the distance between the crossflow fan and the UV module is greater than the distance between the crossflow fan and the heat exchanger, effectively suppressing noise caused by the UV module.

[0023] An air-conditioning apparatus according to an eighth aspect includes an outdoor unit and the indoor unit according to any one of the first to seventh aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of an air conditioning device 10 including a utilization unit 30 .

[0025] Figure 2 It is a front view of the utilization unit 30.

[0026] Figure 3 It is along Figure 2 sectional view of the utilization unit 30 taken along line AA.

[0027] Figure 4 This is a diagram showing the interior of the utilization unit 30 as viewed from the front.

[0028] Figure 5 This is an enlarged view of the periphery of the ultraviolet module 37 and the reflecting member 38 as viewed from the front.

[0029] Figure 6 This is an enlarged view of the periphery of the ultraviolet module 37 and the reflecting member 38 of the utilization unit 30 according to the modification A, as viewed from the front.

[0030] Description of labels

[0031] 10: Air conditioning unit

[0032] 20: Heat source unit (outdoor unit)

[0033] 30: Utilization unit (indoor unit)

[0034] 31: Heat exchanger (using heat exchanger)

[0035] 31b: Heat transfer fins

[0036] 32: Use fans (cross flow fans)

[0037] 32a: Motor

[0038] 32b: Rotor

[0039] 36: Divider

[0040] 36a: First partition

[0041] 36b: Second partition

[0042] 36as: Noodles

[0043] 36bs: Noodles

[0044] 37: UV module

[0045] 37a: Light-emitting diode

[0046] 38: Reflective components

[0047] a: Fin configuration area

[0048] d1: shortest distance

[0049] d2: shortest distance

[0050] f: airflow

[0051] o: optical axis

[0052] P: Ventilation path DETAILED DESCRIPTION

[0053] <First embodiment>

[0054] (1) Overall structure

[0055] The utilization unit 30 according to one embodiment of the present disclosure is used in an air conditioning apparatus. Figure 1 Schematic diagram of an air conditioning device 10 including a utilization unit 30 .

[0056] The air conditioning apparatus 10 includes a heat source unit 20, a usage unit 30, and refrigerant pipes 12 and 13. The usage unit 30 and the heat source unit 20 are connected by the refrigerant pipes 12 and 13 to form a refrigerant circuit 11.

[0057] The heat source unit 20 includes a compressor 21, a four-way valve 22, a heat source heat exchanger 23, an expansion valve 24, a accumulator 25, and a heat source fan 28. The utilization unit 30 includes a utilization heat exchanger 31 and a utilization fan 32. In the refrigerant circuit 11, the compressor 21, the four-way valve 22, the heat source heat exchanger 23, the expansion valve 24, the accumulator 25, and the utilization heat exchanger 31 are connected by piping, and the refrigerant circuit 11 is filled with refrigerant. The heat source unit 20 is an example of an outdoor unit.

[0058] The air conditioner 10 performs a vapor compression refrigeration cycle in the refrigerant circuit 11 to realize cooling and heating operations as air conditioning operations. The utilization unit 30 is installed in the air-conditioned space (not shown). The heat source unit 20 is installed outside the air-conditioned space.

[0059] In the cooling operation mode, the four-way valve 22 is switched to the connection state shown by the solid line, connecting the compressor 21 to the heat source heat exchanger 23 and connecting the utilization heat exchanger 31 to the accumulator 25. In the heating operation mode, the four-way valve 22 is switched to the connection state shown by the dotted line, connecting the compressor 21 to the utilization heat exchanger 31 and connecting the heat source heat exchanger 23 to the accumulator 25.

[0060] (1-1) Refrigerant Circulation During Refrigeration Operation

[0061] During cooling operation, the gas refrigerant compressed by the compressor 21 is transported to the heat source heat exchanger 23 through the four-way valve 22. The refrigerant condenses by exchanging heat in the heat source heat exchanger 23 with the air (heat source) outside the air-conditioned space blown by the heat source fan 28. The refrigerant that has undergone heat exchange in the heat source heat exchanger 23 is expanded and decompressed in the expansion valve 24 and then transported to the utilization heat exchanger 31 of the utilization unit 30 through the refrigerant piping 13. The low-temperature, low-pressure refrigerant transported from the expansion valve 24 to the utilization heat exchanger 31 of the utilization unit 30 evaporates by exchanging heat in the utilization heat exchanger 31 with the air inside the air-conditioned space blown by the fan 32. At this time, the air that has undergone heat exchange with the refrigerant is cooled. The gas refrigerant or the refrigerant in a gas-liquid two-phase state that has undergone heat exchange in the utilization heat exchanger 31 is drawn into the compressor 21 through the refrigerant piping 12, the four-way valve 22, and the accumulator 25. The conditioned air cooled by the utilization heat exchanger 31 is blown from the utilization unit 30 to the air-conditioned space, thereby cooling the room.

[0062] (1-2) Refrigerant Circulation During Heating Operation

[0063] During heating operation, the gas refrigerant compressed by compressor 21 passes through four-way valve 22 and refrigerant piping 12 and is transported to utilization heat exchanger 31. In utilization heat exchanger 31, the refrigerant condenses through heat exchange with the air in the air-conditioned space blown by fan 32. The air undergoing heat exchange with the refrigerant is heated. The refrigerant that has undergone heat exchange in utilization heat exchanger 31 is transported through refrigerant piping 13 to expansion valve 24. The low-temperature, low-pressure refrigerant, which has undergone expansion and decompression in expansion valve 24, is then transported to heat source heat exchanger 23, where it evaporates through heat exchange with the air outside the air-conditioned space blown by heat source fan 28. The gas refrigerant or gas-liquid two-phase refrigerant that has undergone heat exchange in heat source heat exchanger 23 passes through four-way valve 22 and accumulator 25 and is drawn into compressor 21. The conditioned air heated by utilization heat exchanger 31 is blown from utilization unit 30 into the air-conditioned space, thereby heating the room.

[0064] (2) Detailed structure

[0065] (2-1) Utilization Unit 30

[0066] The utilization unit 30 includes a utilization heat exchanger 31, a utilization fan 32, a housing 33, an air filter 34, a baffle 35, a partition 36, an ultraviolet module 37, a reflective member 38, and a control device 39. The utilization unit 30 is a wall-mounted unit that is mounted on a wall surface WL of the air-conditioned space and has a substantially rectangular parallelepiped shape that is long in the horizontal direction (left-right direction). The utilization unit 30 is an example of an indoor unit.

[0067] Figure 2 It is a front view of the utilization unit 30. Figure 3 It is along Figure 2 sectional view of the utilization unit 30 taken along line AA. Figure 4 This is a diagram showing the interior of the utilization unit 30 as viewed from the front. Figure 5 This is an enlarged view of the periphery of the ultraviolet module 37 and the reflecting member 38 as viewed from the front.

[0068] The directions of up, down, left, right, front, and back mentioned in the following description correspond to the directions indicated by the arrows in the figures. Figure 4 In the figure, for convenience, the housing 33 and the air filter 34 are shown through, and a portion of the heat exchanger 31 is omitted. Figure 5 In the figure, for convenience, the housing 33 and the air filter 34 are shown through, and a part of the heat exchanger 31 and the fan 32 are omitted.

[0069] (2-1-1) Housing 33

[0070] The housing 33 is a generally rectangular parallelepiped shape that is elongated horizontally (left-right). It houses the heat exchanger 31, fan 32, air filter 34, UV module 37, and reflector 38. The housing 33 has an air inlet 33a, an outlet 33b, and a wiring storage space 33c. The housing 33 is installed in the air-conditioned space with its rear surface 33R in contact with the wall WL.

[0071] The suction port 33a is an opening formed in the upper portion of the housing 33 and serves as an inlet for air to flow into the interior of the housing 33. The blowout port 33b is an opening formed in the lower portion of the housing 33 and serves as an outlet for the airflow f (conditioned air). The utilization unit 30 draws air from the air-conditioned space into the housing 33 through the suction port 33a and blows the conditioned air out through the blowout port 33b.

[0072] The wiring storage space 33c is a space extending in the left-right direction and formed in front of the air outlet 33b.

[0073] In the casing 33 , in the flow path of the air flow f flowing from the suction port 33 a to the blowout port 33 b , an air filter 34 , a heat exchanger 31 , a fan 32 , and a baffle 35 are arranged in this order from the position closest to the suction port 33 a .

[0074] (2-1-2) Air filter 34

[0075] The air filter 34 removes dust from the air of the target space supplied to the heat exchanger 31. The air filter 34 is arranged in the casing 33 so as to allow substantially all of the air supplied to the heat exchanger 31 to pass therethrough.

[0076] (2-1-3) Using the heat exchanger 31

[0077] The heat exchanger 31 exchanges heat between the refrigerant and the air in the air-conditioned space. Airflow f generated by a fan 32 passes through the heat exchanger 31. The heat exchanger 31 is a fin-and-tube heat exchanger comprising a plurality of heat transfer tubes 31a, a plurality of heat transfer fins 31b, a plurality of U-shaped tubes 31c, a tube sheet 31d, and a sealing member 31e. The heat transfer tubes 31a, heat transfer fins 31b, U-shaped tubes 31c, and tube sheet 31d are formed from aluminum or an aluminum alloy. The heat exchanger 31 is an example of a heat exchanger.

[0078] The plurality of heat transfer tubes 31 a are arranged inside the casing 33 with their longitudinal directions extending along the left-right direction and at predetermined intervals therebetween.

[0079] The plurality of heat transfer fins 31b are arranged inside the housing 33 at right angles to the horizontal direction and at predetermined intervals therebetween. The heat transfer fins 31b have a plurality of holes through which the heat transfer tubes 31a pass. The plurality of heat transfer fins 31b are arranged in the horizontal direction between the two tube sheets 31d.

[0080] The heat transfer fin 31b has a first portion 31ba, a second portion 31bb, a third portion 31bc, a first bent portion 31bd, and a second bent portion 31be. The heat transfer fin 31b is formed into a C-shape open downward when viewed from the left and right directions (see FIG. Figure 3 ).

[0081] The first bent portion 31bd is located at the uppermost portion of the heat exchanger 31. The second bent portion 31be is located at the frontmost portion of the heat exchanger 31.

[0082] The first bent portion 31bd includes a connecting portion that connects the first portion 31ba and the second portion 31bb. The second bent portion 31be includes a connecting portion that connects the second portion 31bb and the third portion 31bc.

[0083] The first bent portion 31bd and the second bent portion 31be are portions where the heat transfer fin 31b is bent when viewed from the left-right direction.

[0084] The first portion 31ba connects the first curved portion 31bd to the rearmost end of the heat transfer fin 31b. The first portion 31ba is formed so as to extend downward as it approaches the rear from the first curved portion 31bd. The second portion 31bb connects the first curved portion 31bd to the second curved portion 31be. The second portion 31bb is formed so as to extend downward as it approaches the front from the first curved portion 31bd. The third portion 31bc connects the second curved portion 31be to the lowest end of the heat transfer fin 31b. The third portion 31bc extends downward from the second curved portion 31be.

[0085] The U-shaped tube 31c connects the ends of two predetermined heat transfer tubes 31a. Some heat transfer tubes 31a are connected at their ends to a pipe connected to one of the refrigerant pipes 12 and 13. This allows refrigerant flowing from either of the refrigerant pipes 12 and 13 into the heat transfer tube 31a to flow through the multiple heat transfer tubes 31a while being redirected by the U-shaped tube 31c.

[0086] The tube sheet 31d supports the plurality of heat transfer tubes 31a at their longitudinal ends. The tube sheet 31d is arranged inside the housing 33 perpendicular to the left-right direction. The tube sheet 31d has a shape substantially identical to that of the heat transfer fins 31b and has a plurality of holes formed therein for the heat transfer tubes 31a to pass through.

[0087] The sealing member 31e is a plate-shaped member that prevents air from passing through the first curved portion 31bd. The sealing member 31e covers the surface of the first curved portion 31bd that faces the air filter 34. The heat transfer fin 31b may be formed so that the width thereof as viewed from the left and right directions is thinner than that of other portions at the first curved portion 31bd (see FIG. 3 ). Figure 3 In this case, the heat exchange efficiency of the heat exchanger 31 is likely to be lower around the first curved portion 31bd than in other parts. The sealing member 31e prevents the airflow f from passing through the first curved portion 31bd, where the heat exchange efficiency is lower than in other parts, thereby preventing a decrease in the heat exchange efficiency of the heat exchanger 31.

[0088] (2-1-4) Using fan 32

[0089] The fan 32 generates an air flow f which flows into the casing 33 from the suction port 33a, passes through the air filter 34 and the heat exchanger 31, and is blown out from the blowout port 33b. The fan 32 is a cross-flow fan.

[0090] The utilization fan 32 is arranged with its rotation axis extending in the left-right direction. It is surrounded by the utilization heat exchanger 31 and positioned downstream of the utilization heat exchanger 31 in the airflow f. The utilization fan 32 includes a motor 32a, which is an actuator that rotationally drives the main body of the utilization fan 32. The motor 32a includes a rotor 32b. The motor 32a is connected to a control device 39. The rotational speed of the motor 32a is controlled by the control device 39.

[0091] (2-1-5) Baffle 35

[0092] The damper 35 controls the airflow blown out from the air outlet 33b (specifically, controls the direction and / or amount of the airflow). The damper 35 includes a damper body 35a and a motor 35b.

[0093] The baffle body 35a is located at the air outlet 33b. The motor 35b is an actuator that rotationally drives the baffle body 35a. The motors 35b are located on both sides of the air outlet 33b. The motors 35b are connected to the control device 39 via a wiring harness 35c. The wiring harness 35c is housed in the wiring storage space 33c.

[0094] (2-1-6) Partition 36

[0095] The partition 36 is arranged at both ends of the heat exchanger 31 and is a plate-shaped component that separates the ventilation path P. The ventilation path P is a path that allows the air flow f flowing into the shell from the suction port 33a to pass directly to the blow-out port 33b. The partition 36 is arranged at both ends of the heat exchanger 31 in such a manner that the main surface is perpendicular to the left-right direction. The partition 36 prevents the air flow f (conditioned air) that has passed through the heat exchanger 31 from leaking to the left and right directions before reaching the blow-out port 33b. The partition 36 has a concave and convex shape in the left-right direction. The partition 36 is made of resin. The partition 36 can be composed of one component or a plurality of components.

[0096] The partition 36 includes a first partition 36a disposed at the left end of the heat exchanger 31 and a second partition 36b disposed at the right end of the heat exchanger 31. In other words, the first partition 36a, located on one side (the left side) in the longitudinal direction (left-right direction) of the fan 32, partitions one side of the ventilation path P in the longitudinal direction. Furthermore, the second partition 36b, located on the other side (the right side) of the ventilation path P in the left-right direction, partitions the ventilation path P together with the first partition 36a. The first partition 36a supports the UV module 37 and the rotating shaft of the fan 32 (not shown). The second partition 36b supports the motor 32a of the fan 32 and the reflector 38.

[0097] (2-1-7) Ultraviolet module 37

[0098] The ultraviolet module 37 irradiates ultraviolet rays to the ventilation path P through which the air flow f passing through the heat exchanger 31 passes. The ultraviolet module 37 includes a light emitting diode 37a, a control substrate 37b, and a power supply line 37c.

[0099] The light emitting diode 37a irradiates ultraviolet light onto the ventilation path P. The control board 37b carries electronic components for controlling the light emitting diode 37a and is electrically connected to the light emitting diode 37a. The power supply wiring 37c is a wiring for supplying power to the light emitting diode 37a and the control board 37b and is connected to the control device 39.

[0100] The ultraviolet module 37 is fixed to the partition 36. More specifically, the ultraviolet module 37 is fixed to the first partition 36a so that the optical axis o of the light emitting diode 37a passes between the heat exchanger 31 and the fan 32. The ultraviolet module 37 is provided in the ventilation path P and is provided on a surface 36as of the first partition 36a that is opposite to the ventilation path P in the left-right direction (see FIG. Figure 5 ) to one side (left side). Here, being provided in the ventilation path P also includes being at least partially in contact with the ventilation path P. The light emitting diode 37a of the ultraviolet module 37 is opposite to and in contact with the ventilation path P at a position to the left of the surface 36as of the first partition 36a.

[0101] like Figure 5 As shown, the ultraviolet module 37 may be arranged outside the fin arrangement region a where the plurality of heat transfer fins 31b are arranged in the longitudinal direction of the fan 32. The fin arrangement region a is an area sandwiched by the planes 31bs of the heat transfer fins 31b located at both ends in the left-right direction of the plurality of heat transfer fins 31b (see Figure 5 ).

[0102] The control board 37b is arranged near the light emitting diode 37a. More specifically, the control board 37b is fixed to the first partition 36a together with the light emitting diode 37a.

[0103] The power supply wire 37c is housed in the wire housing space 33c together with the wire harness 35c connected to the motor 35b.

[0104] (2-1-8) Reflection member 38

[0105] The reflecting member 38 reflects the ultraviolet rays emitted from the ultraviolet module 37 .

[0106] The reflective member 38 has a reflective surface 38a capable of reflecting ultraviolet rays emitted by the ultraviolet module 37. The reflective member 38 is arranged on the opposite side of the ultraviolet module 37 across the ventilation path P. More specifically, the reflective member 38 is fixed to the second partition 36b so that the optical axis o of the light-emitting diode 37a hits the reflective surface 38a.

[0107] like Figure 5 As shown, the reflective member 38 may be fixed to the second partition 36b in a manner that does not protrude from the second partition 36b toward the ventilation path P. In other words, the reflective member 38 may be fixed to the second partition 36b in a manner that the surface facing the ventilation path P and the surface of the second partition 36b facing the ventilation path P are coplanar. Figure 5 As shown, the reflection member 38 may be arranged at a position overlapping with the rotor 32b included in the motor 32a that drives the fan 32 when viewed from the front.

[0108] (2-1-9) Control device 39

[0109] The control device 39 controls the UV module 37 and each actuator (the motor 32a of the fan 32 and the motor 35b of the baffle 35). The control device 39 is electrically connected to the control board 37b of the UV module 37, the motor 32a, and the motor 35b via wiring. The control device 39 is housed in the electrical component box 40 and is located on the right side of the motor 32a (see FIG. Figure 4 ).

[0110] The control device 39 is implemented as a computer. It includes a control arithmetic unit and a storage device. The control arithmetic unit can use a processor such as a CPU or GPU. The control arithmetic unit reads a program stored in the storage device and performs predetermined arithmetic processing according to the program. Furthermore, the control arithmetic unit can write arithmetic results to the storage device or read information stored in the storage device according to the program.

[0111] (3) Characteristics

[0112] (3-1)

[0113] The usage unit 30 is an indoor unit of the air-conditioning apparatus 10. The usage unit 30 includes a usage fan 32, a usage heat exchanger 31, and an ultraviolet module 37.

[0114] The fan 32 generates the air flow f. The heat exchanger 31 is a heat exchanger through which the air flow f passes. The ultraviolet module 37 includes a light emitting diode 37a that irradiates ultraviolet light to the ventilation path P through which the air flow f passing through the heat exchanger 31 passes.

[0115] A first partition 36a provided on one side (left side) in the longitudinal direction of the fan 32 partitions one side in the longitudinal direction of the ventilation path P. The ultraviolet module 37 is provided in the ventilation path and is provided on one side of a surface 36bs of the first partition 36a facing the ventilation path P in the longitudinal direction.

[0116] In the utilization unit 30, the ultraviolet module 37 is located to the left of the surface 36as of the first partition 36a that faces the ventilation path P. Therefore, the ultraviolet module 37 does not obstruct the flow of the airflow f flowing into the utilization fan 32. Therefore, according to the utilization unit 30, the conditioned air can be irradiated with ultraviolet rays while suppressing the generation of noise caused by the placement of the ultraviolet module 37.

[0117] (3-2)

[0118] The heat exchanger 31 includes a plurality of heat transfer fins 31b arranged at predetermined intervals in the longitudinal direction. The ultraviolet module 37 is arranged in the longitudinal direction outside the fin arrangement region a where the plurality of heat transfer fins 31b are arranged.

[0119] According to the utilization unit 30 , the ultraviolet module 37 does not hinder the smooth flow of the airflow f passing through the fin arrangement region a, and thus a decrease in the heat exchange efficiency of the heat exchanger 31 can be suppressed.

[0120] (3-3)

[0121] The first partition 36a is made of resin.

[0122] According to the utilization unit 30 , since the ultraviolet module 37 is fixed to the first partition portion 36 a made of resin having low thermal conductivity, it is possible to suppress the ultraviolet module 37 from being heated by the heat of the heat exchanger 31 during the heating operation.

[0123] (3-4)

[0124] The utilization unit 30 further includes a reflecting member 38 and a second partition 36 b .

[0125] The reflecting member 38 reflects the ultraviolet rays emitted from the ultraviolet module 37 .

[0126] The second partition 36 b is provided on the other side in the longitudinal direction across the ventilation path P, and partitions the ventilation path P together with the first partition 36 a .

[0127] The reflecting member 38 is fixed to the second partition portion 36 b so as not to protrude from the second partition portion 36 b toward the ventilation path P.

[0128] According to the utilization unit 30 , since the reflecting member 38 is not disposed in the ventilation path P, the generation of noise due to the reflecting member 38 can also be suppressed.

[0129] (3-5)

[0130] The reflecting member 38 is disposed at a position overlapping with the rotor 32 b included in the motor 32 a that drives the fan 32 when viewed from the front.

[0131] (4) Modification

[0132] (4-1) Modification A

[0133] In the utilization unit 30 of the above embodiment, the ultraviolet module 37 is provided in the first partition 36 a , but the ultraviolet module 37 may be provided in the second partition 36 b . Figure 6 This is an enlarged view of the periphery of the ultraviolet module 37 and the reflecting member 38 of the utilization unit 30 according to the modification A, as viewed from the front. Figure 6 In the figure, for convenience, the housing 33 and the air filter 34 are shown through, and a part of the heat exchanger 31 and the fan 32 is omitted.

[0134] The ultraviolet module 37 is provided on the right side of the surface 36bs of the second partition 36b facing the ventilation path P. The ultraviolet module 37 is arranged so as to overlap with the rotor 32b included in the motor 32a driving the fan 32 when viewed from the front.

[0135] The reflective member 38 is fixed to the first partition 36a so that the optical axis o of the light emitting diode 37a shines on the reflective member 38. The reflective member 38 is fixed to the first partition 36a so as not to protrude from the first partition 36a into the ventilation path P.

[0136] (4-2) Modification B

[0137] The ultraviolet module 37 may be arranged at a position such that the shortest distance d1 between the optical axis o of the light emitting diode 37a and the fan 32 is greater than the shortest distance d2 between the heat exchanger 31 and the fan 32 (see FIG. Figure 3 ).

[0138] The fan 32 , which is larger than the ultraviolet module 37 and has a complicated shape, is more likely to obstruct the flow of the air flow f flowing into the fan 32 than the ultraviolet module 37 .

[0139] According to the utilization unit 30 of variant example B, by making the distance between the utilization fan 32 and the ultraviolet module 37 greater than the distance between the utilization fan 32 and the utilization heat exchanger 31, the influence of the ultraviolet module 37 on the flow of the airflow f flowing into the utilization fan 32 can be relatively reduced, and the generation of noise caused by the ultraviolet module 37 can be effectively suppressed.

[0140] in addition, Figure 3 The positions of the shortest distance d1 and the shortest distance d2 shown are examples, and the shortest distance may be achieved at other positions.

[0141] Summary

[0142] While the embodiments of the present disclosure have been described above, it should be understood that various changes in form and details can be made without departing from the spirit and scope of the present disclosure as described in the claims.

Claims

1. An indoor unit (30), which is an indoor unit (30) of an air conditioning device (10), wherein: The indoor unit (30) comprises: a cross-flow fan (32) that generates an air flow (f); a heat exchanger (31) through which the airflow (f) passes; and The ultraviolet module (37) includes a light emitting diode (37a) for irradiating ultraviolet rays to a ventilation path (P) through which the airflow (f) passing through the heat exchanger (31) passes. A first partition (36a) provided on one side in the longitudinal direction of the cross flow fan (32) partitions the one side in the longitudinal direction of the ventilation path (P). The ultraviolet module (37) is provided in the ventilation path (P) and is provided at a position closer to the one side than the surface (36as) of the first partition (36a) facing the ventilation path (P) in the longitudinal direction.

2. The indoor unit (30) according to claim 1, wherein: The heat exchanger (31) has a plurality of heat transfer fins (31b) arranged at predetermined intervals in the longitudinal direction. The ultraviolet module (37) is arranged in the longitudinal direction outside the fin arrangement region (a) where the plurality of heat transfer fins (31b) are arranged.

3. The indoor unit (30) according to claim 1, wherein: The first partition (36a) is made of resin.

4. The indoor unit (30) according to claim 1, wherein The ultraviolet module (37) is arranged at a position overlapping with a rotor (32b) included in a motor (32a) that drives the cross-flow fan (32) when viewed from the front.

5. The indoor unit (30) according to claim 1, wherein The indoor unit (30) further comprises: a reflective component (38) for reflecting ultraviolet rays emitted from the ultraviolet module (37); as well as a second partition (36b) provided on the other side of the longitudinal direction across the ventilation path (P) and partitioning the ventilation path (P) together with the first partition (36a); The reflecting member (38) is fixed to the second partition (36b) so as not to protrude from the second partition (36b) toward the ventilation path (P).

6. The indoor unit (30) according to claim 5, wherein: The reflecting member (38) is arranged at a position overlapping with a rotor (32b) included in a motor (32a) that drives the cross-flow fan (32) when viewed from the front.

7. The indoor unit (30) according to claim 1, wherein: The ultraviolet module (37) is arranged at a position such that the shortest distance (d1) between the optical axis (o) of the light emitting diode (37a) and the cross flow fan (32) is greater than the shortest distance (d2) between the heat exchanger (31) and the cross flow fan (32).

8. An air conditioning device (10), comprising: The indoor unit (30) according to any one of claims 1 to 7; and Outdoor unit (20).

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