Indoor unit and air conditioner

Abstract

To provide an indoor unit of an air conditioner capable of radiating ultraviolet ray to conditioned air, and restraining noise due to arrangement of an ultraviolet module.SOLUTION: An indoor unit comprises a cross flow fan, a heat exchanger, and an ultraviolet module. The cross flow fan generates an air flow. An air flow passes through the heat exchanger. The ultraviolet module has a light emission diode for radiating ultraviolet ray to a ventilation path, through which the air flow passing through the heat exchanger passes. The ventilation path is partitioned on one longitudinal side by a first partition part provided on one longitudinal side of the cross flow fan. The ultraviolet module is provided to the ventilation path, and nearer one side than a face opposite to the ventilation path of the first partition part in a longitudinal direction.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] This invention relates to an indoor unit and an air conditioning device. [Background technology]

[0002] Patent Document 1 (JP 2022-160292 A) discloses an indoor unit for an air conditioner in which an ultraviolet irradiation device having a light-emitting diode that irradiates ultraviolet light and a light distribution control unit that converts the distribution of the ultraviolet light into parallel light is arranged at an intake or exhaust port inside the housing. Summary of the Invention [Problem to be solved by the invention]

[0003] It is known that indoor units using crossflow fans generate noise (called NZ noise, etc.) when the incoming airflow passes through the crossflow fan or components arranged in the vicinity of the crossflow fan. Even in the indoor unit disclosed in Patent Document 1, depending on the arrangement of the light-emitting diodes and the ultraviolet module containing them, there is a risk of noise being generated when the airflow is obstructed by the ultraviolet module, so there is room for improvement in the arrangement of the ultraviolet module.

[0004] The present disclosure aims to provide an indoor unit and an air conditioner that are capable of irradiating conditioned air with ultraviolet rays while suppressing the generation of noise caused by the placement of an ultraviolet module. [Means for solving the problem]

[0005] An indoor unit according to a first aspect is an indoor unit for an air conditioner. The indoor unit includes a crossflow fan, a heat exchanger, and an ultraviolet module.

[0006] The crossflow fan generates an airflow, the heat exchanger is a heat exchanger through which the airflow passes, and the ultraviolet module has a light-emitting diode that irradiates ultraviolet light onto the ventilation path through which the airflow passes after passing through the heat exchanger.

[0007] The ventilation path is partitioned on one side in the longitudinal direction by a first partition provided on one side in the longitudinal direction of the crossflow fan. The ultraviolet module is provided in the ventilation path and is provided on one side in the longitudinal direction of the first partition facing the ventilation path.

[0008] In this indoor unit, the ultraviolet module is located on one side of the surface of the first partition that faces the ventilation path, so it does not interfere with the flow of air (conditioned air) flowing into the crossflow fan. Therefore, with this indoor unit, it is possible to irradiate ultraviolet rays onto the conditioned air while suppressing noise caused by the placement of the ultraviolet module.

[0009] The indoor unit of a second aspect is the indoor unit of the first aspect, wherein the heat exchanger has a plurality of heat transfer fins arranged at predetermined intervals in the longitudinal direction, and the ultraviolet module is arranged outside the fin arrangement area in the longitudinal direction where the plurality of heat transfer fins are arranged.

[0010] According to this indoor unit, the ultraviolet module does not impede the smooth flow of air that has passed through the fin arrangement area, and therefore a decrease in the heat exchange efficiency of the heat exchanger is suppressed.

[0011] An indoor unit according to a third aspect is the indoor unit according to the first or second aspect, wherein the first partition portion is made of resin.

[0012] According to this indoor unit, the ultraviolet module is fixed to the first partition section made of resin with low thermal conductivity, so the ultraviolet module is prevented from being heated by the heat of the heat exchanger during heating operation.

[0013] An indoor unit according to a fourth aspect is any one of the indoor units according to the first aspect to the third aspect, in which the ultraviolet module is arranged in a position that overlaps with a rotor included in a motor that drives the crossflow fan when viewed from the front.

[0014] An indoor unit according to a fifth aspect is any one of the indoor units according to the first aspect to the fourth aspect, wherein the indoor unit further comprises a reflecting member and a second partition portion.

[0015] The reflecting member reflects ultraviolet light emitted from the ultraviolet module. The second partition is provided on the other side of the ventilation path in the longitudinal direction and divides the ventilation path together with the first partition. The reflecting member is fixed to the second partition so as not to protrude from the second partition into the ventilation path.

[0016] According to this indoor unit, since the reflective member is not disposed in the ventilation path, noise caused by the reflective member is also suppressed.

[0017] An indoor unit according to a sixth aspect is any one of the indoor units according to the first aspect to the fifth aspect, wherein the reflecting member is arranged in a position that overlaps with a rotor included in a motor that drives the crossflow fan when viewed from the front.

[0018] The indoor unit of a seventh aspect is any one of the indoor units of the first aspect to the sixth aspect, in which the ultraviolet module is positioned so that the shortest distance between the optical axis of the light-emitting diode and the crossflow fan is greater than the shortest distance between the heat exchanger and the crossflow fan.

[0019] The crossflow fan, which is larger and has a more complex shape than the UV module, is more likely to cause noise than the UV module. With 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, so noise caused by the UV module is effectively suppressed.

[0020] An air conditioner according to an eighth aspect includes an indoor unit according to any one of the first to seventh aspects and an outdoor unit. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a schematic diagram of an air conditioning device 10 having a utilization unit 30. FIG. [Figure 2] FIG. 2 is a front view of the utilization unit 30. [Figure 3] 3 is a cross-sectional view of the utilization unit 30 taken along line AA in FIG. 2. FIG. [Figure 4] FIG. 2 is a view of the interior of the utilization unit 30 as seen from the front. [Figure 5] 3 is an enlarged view of the periphery of the ultraviolet module 37 and the reflecting member 38 as seen from the front. [Figure 6] 10 is an enlarged view of the ultraviolet module 37 and the reflective member 38 of the utilization unit 30 of Modification A, seen from the front. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0022] First Embodiment (1) Overall structure A utilization unit 30 according to an embodiment of the present disclosure is used in an air conditioning apparatus. Figure 1 is a schematic diagram of an air conditioning apparatus 10 having a utilization unit 30.

[0023] The air conditioner 10 includes a heat source unit 20, a utilization unit 30, and refrigerant pipes 12 and 13. The utilization unit 30 and the heat source unit 20 are connected by the refrigerant pipes 12 and 13 to form a refrigerant circuit 11.

[0024] The heat source unit 20 has a compressor 21, a four-way valve 22, a heat source heat exchanger 23, an expansion valve 24, an accumulator 25, and a heat source fan 28. The utilization unit 30 has a utilization heat exchanger 31 and a utilization fan 32. The refrigerant circuit 11 connects 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 with piping, and is filled with refrigerant. The heat source unit 20 is an example of an outdoor unit.

[0025] The air conditioner 10 performs cooling and heating air conditioning operations by running a vapor compression refrigeration cycle in a refrigerant circuit 11. The utilization unit 30 is installed in a space to be air-conditioned (not shown). The heat source unit 20 is installed outside the space to be air-conditioned.

[0026] In the cooling operation mode, the four-way valve 22 switches to the connection state indicated by the solid lines, connecting the compressor 21 and the heat source heat exchanger 23, and connecting the utilization heat exchanger 31 and the accumulator 25. In the heating operation mode, the four-way valve 22 switches to the connection state indicated by the dashed lines, connecting the compressor 21 and the utilization heat exchanger 31, and connecting the heat source heat exchanger 23 and the accumulator 25.

[0027] (1-1) Refrigerant circulation during cooling operation In cooling operation, gas refrigerant compressed by the compressor 21 is sent to the heat source heat exchanger 23 through the four-way valve 22. In the heat source heat exchanger 23, the refrigerant exchanges heat with air (heat source) outside the space to be air-conditioned, which is blown by the heat source fan 28, and condenses. The refrigerant that has exchanged heat in the heat source heat exchanger 23 is expanded and reduced in pressure by the expansion valve 24 and sent to the utilization heat exchanger 31 of the utilization unit 30 through the refrigerant piping 13. The low-temperature, low-pressure refrigerant sent from the expansion valve 24 to the utilization heat exchanger 31 of the utilization unit 30 exchanges heat with the air in the space to be air-conditioned, which is blown by the utilization fan 32, in the utilization heat exchanger 31, and evaporates. At this time, the air that has exchanged heat with the refrigerant is cooled. The gas refrigerant or refrigerant in a gas-liquid two-phase state that has exchanged heat 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 out from the utilization unit 30 into the space to be air-conditioned, thereby cooling the room.

[0028] (1-2) Refrigerant circulation during heating operation During heating operation, gas refrigerant compressed by the compressor 21 is sent to the utilization heat exchanger 31 through the four-way valve 22 and the refrigerant piping 12. In the utilization heat exchanger 31, the refrigerant exchanges heat with air in the air-conditioned space blown by the utilization fan 32, causing it to condense. During this process, the air that has exchanged heat with the refrigerant is heated. The refrigerant that has exchanged heat in the utilization heat exchanger 31 is sent to the expansion valve 24 through the refrigerant piping 13. The low-temperature, low-pressure refrigerant that has been expanded and decompressed in the expansion valve 24 is sent to the heat-source heat exchanger 23, where it exchanges heat with air outside the air-conditioned space blown by the heat-source fan 28, causing it to evaporate. The gas refrigerant or refrigerant in a gas-liquid two-phase state that has exchanged heat in the heat-source heat exchanger 23 passes through the four-way valve 22 and the accumulator 25 and is drawn into the compressor 21. The conditioned air heated in the utilization heat exchanger 31 is blown from the utilization unit 30 into the air-conditioned space, thereby heating the room.

[0029] (2) Detailed configuration (2-1) Usage unit 30 The utilization unit 30 includes a utilization heat exchanger 31, a utilization fan 32, a casing 33, an air filter 34, a flap 35, a partition 36, an ultraviolet module 37, a reflecting member 38, and a control device 39. The utilization unit 30 is a wall-mounted unit that is attached to the wall surface WL of the space to be air-conditioned and has a substantially rectangular parallelepiped shape that is elongated in the horizontal direction (left-right direction). The utilization unit 30 is an example of an indoor unit.

[0030] Fig. 2 is a front view of the utilization unit 30. Fig. 3 is a cross-sectional view of the utilization unit 30 taken along line AA in Fig. 2. Fig. 4 is a view of the interior of the utilization unit 30 as seen from the front. Fig. 5 is an enlarged view of the periphery of the ultraviolet module 37 and the reflecting member 38 as seen from the front.

[0031] The directions of up, down, left, right, front, and rear referred to in the following description correspond to the directions indicated by arrows in each drawing. In Fig. 4, for convenience, the casing 33 and the air filter 34 are shown in a see-through manner, and the heat utilization exchanger 31 is partially omitted. In Fig. 5, for convenience, the casing 33 and the air filter 34 are shown in a see-through manner, and the heat utilization exchanger 31 and the heat utilization fan 32 are partially omitted.

[0032] (2-1-1) Casing 33 The casing 33 has a generally rectangular parallelepiped shape that is long in the horizontal direction (left-right direction). The casing 33 houses the utilization heat exchanger 31, utilization fan 32, air filter 34, ultraviolet module 37, and reflector 38 inside. The casing 33 has an intake port 33a, an outlet port 33b, and a wiring accommodation space 33c. The casing 33 is installed in the space to be air-conditioned so that the back surface 33R is in contact with the wall surface WL.

[0033] The intake port 33a is an opening formed in the upper part of the casing 33, and is an air inlet into the interior of the casing 33. The outlet port 33b is an opening formed in the lower part of the casing 33, and is an outlet for the airflow f (conditioned air). The utilization unit 30 draws air from the space to be air-conditioned into the casing 33 through the intake port 33a, and blows out the conditioned air from the outlet port 33b.

[0034] The wire accommodation space 33c is a space formed in front of the air outlet 33b and extending in the left-right direction.

[0035] Within the casing 33, in the flow path of the airflow f flowing from the intake port 33a to the outlet port 33b, an air filter 34, a utilization heat exchanger 31, a utilization fan 32, and a flap 35 are arranged in this order from the position closest to the intake port 33a.

[0036] (2-1-2) Air filter 34 The air filter 34 removes dust from the air in the target space that is supplied to the utilization heat exchanger 31. The air filter 34 is disposed in the casing 33 so that substantially all of the air that is supplied to the utilization heat exchanger 31 passes through the air filter 34.

[0037] (2-1-3) Utilized heat exchanger 31 The utilization heat exchanger 31 causes the refrigerant to exchange heat with the air in the space to be air-conditioned. An airflow f generated by a utilization fan 32 passes through the utilization heat exchanger 31. The utilization heat exchanger 31 is a fin-and-tube type heat exchanger having a plurality of heat transfer tubes 31a, a plurality of heat transfer fins 31b, a plurality of U-shaped tubes 31c, a tube plate 31d, and a sealing member 31e. The heat transfer tubes 31a, the heat transfer fins 31b, the U-shaped tubes 31c, and the tube plate 31d are made of aluminum or an aluminum alloy. The utilization heat exchanger 31 is an example of a heat exchanger.

[0038] The heat transfer tubes 31a are arranged inside the casing 33 so that their longitudinal directions are aligned with the left-right direction and so that they are spaced apart at predetermined intervals.

[0039] The heat transfer fins 31b are arranged inside the casing 33 so as to be perpendicular to the left-right direction and spaced apart at predetermined intervals in the left-right direction. The heat transfer fins 31b have a plurality of holes formed therein through which the heat transfer tubes 31a pass. The heat transfer fins 31b are arranged between the two tube plates 31d in the left-right direction.

[0040] 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 so as to have a C-shape that opens downward when viewed from the left and right (see FIG. 3).

[0041] The first bent portion 31bd is located at the top of the utilization heat exchanger 31. The second bent portion 31be is located at the front of the utilization heat exchanger 31.

[0042] 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.

[0043] 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.

[0044] The first portion 31ba connects the first bent portion 31bd and the rearmost end of the heat transfer fin 31b. The first portion 31ba is formed so as to extend downward from the first bent portion 31bd toward the rear. The second portion 31bb is formed so as to extend downward from the first bent portion 31bd toward the front. The third portion 31bc is formed so as to connect the second bent portion 31be and the lowermost portion of the heat transfer fin 31b. The third portion 31bc extends downward from the second bent portion 31be.

[0045] The U-shaped tube 31c connects the ends of two predetermined heat transfer tubes 31a. Some of the heat transfer tubes 31a have ends connected to a pipe that is connected to one of the refrigerant pipes 12, 13. This allows the refrigerant that flows into the heat transfer tube 31a from one of the refrigerant pipes 12, 13 to flow through the multiple heat transfer tubes 31a while turning around at the U-shaped tube 31c.

[0046] The tube sheet 31d supports the heat transfer tubes 31a at their longitudinal ends. The tube sheet 31d is disposed inside the casing 33 so as to be perpendicular to the left-right direction. The tube sheet 31d is formed in substantially the same shape as the heat transfer fins 31b, and has a plurality of holes formed therein through which the heat transfer tubes 31a pass.

[0047] The sealing member 31e is a plate-shaped member that prevents air from passing through the first bent portion 31bd. The sealing member 31e covers the surface of the first bent portion 31bd that faces the air filter 34. The heat transfer fins 31b may be formed so that the width, as viewed in the left-right direction, at the first bent portion 31bd is thinner than at other portions (see FIG. 3). In this case, the heat exchange efficiency of the utilization heat exchanger 31 is likely to be lower around the first bent portion 31bd than at other portions. The sealing member 31e prevents the airflow f from passing through the first bent portion 31bd, where the heat exchange efficiency is lower than at other portions, thereby preventing a decrease in the heat exchange efficiency of the utilization heat exchanger 31.

[0048] (2-1-4) Fan usage 32 The utilization fan 32 generates an airflow f that flows into the casing 33 from the intake port 33a, passes through the air filter 34 and the utilization heat exchanger 31, and is blown out from the outlet 33b. The utilization fan 32 is a cross-flow fan.

[0049] The utilization fan 32 is arranged so that its rotation axis is aligned in the left-right direction and is surrounded by the utilization heat exchanger 31 downstream of the utilization heat exchanger 31 in the airflow f. The utilization fan 32 is equipped with a motor 32a which is an actuator that rotates and 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 control device 39 controls the rotation speed of the motor 32a.

[0050] (2-1-5) Flap 35 The flap 35 controls the airflow blown out from the air outlet 33b (specifically, controls the direction and / or amount of the airflow). The flap 35 has a flap main body 35a and a motor 35b.

[0051] The flap body 35a is disposed at the air outlet 33b. The motor 35b is an actuator that rotates the flap body 35a. The motors 35b are disposed on both the left and right sides of the air outlet 33b. The motors 35b are connected to the control device 39 via harnesses 35c. The harnesses 35c are housed in the wiring housing space 33c.

[0052] (2-1-6) Partition 36 The partitions 36 are plate-shaped members disposed at both ends of the utilization heat exchanger 31 and separating the air passage P. The air passage P is a path along which the airflow f that flows into the casing from the intake port 33a passes until it reaches the outlet port 33b. The partitions 36 are disposed at both ends of the utilization heat exchanger 31 so that their main surfaces are perpendicular to the left-right direction. The partitions 36 prevent the airflow f (conditioned air) that has passed through the utilization heat exchanger 31 from leaking in the left-right direction before it reaches the outlet port 33b. The partitions 36a have an uneven shape in the left-right direction. The partitions 36 are made of resin. The partitions 36 may be made of a single member or multiple members.

[0053] The partition 36 includes a first partition 36a disposed at the left end of the utilization heat exchanger 31 and a second partition 36b disposed at the right end of the utilization heat exchanger 31. In other words, one side of the ventilation path P in the longitudinal direction (left-right direction) is partitioned by the first partition 36a provided on one side (left side) of the utilization fan 32 in the longitudinal direction (left-right direction). The second partition 36b is provided on the other side (right side) in the left-right direction across the ventilation path P, and partitions the ventilation path P together with the first partition 36a. The first partition 36a supports the ultraviolet module 37 and a rotation shaft (not shown) of the utilization fan 32. The second partition 36b supports the motor 32a of the utilization fan 32 and the reflecting member 38.

[0054] (2-1-7) UV Module 37 The ultraviolet module 37 irradiates ultraviolet light onto the air passage P through which the airflow f passes after passing through the heat utilization exchanger 31. The ultraviolet module 37 has a light emitting diode 37a, a control board 37b, and a power supply wiring 37c.

[0055] The light-emitting diode 37a irradiates ultraviolet light onto the ventilation path P. The control board 37b has electronic components mounted thereon that control 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.

[0056] 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 utilization heat exchanger 31 and the utilization fan 32. The ultraviolet module 37 is provided in the ventilation path P and is provided on one side (left side) of a surface 36as of the first partition 36a (see FIG. 5) that faces the ventilation path P in the left-right direction. Here, being provided in the ventilation path P also includes at least a portion of the ultraviolet module 37 being in contact with the ventilation path P. The light-emitting diode 37a of the ultraviolet module 37 faces and is in contact with the ventilation path P on the left side of the surface 36as of the first partition 36a.

[0057] 5, the ultraviolet module 37 may be arranged outside a fin arrangement area a in which the plurality of heat transfer fins 31b are arranged in the longitudinal direction of the utilization fan 32. The fin arrangement area a is an area sandwiched between planes 31bs that include the heat transfer fins 31b located at both ends in the left-right direction among the plurality of heat transfer fins 31b (see FIG. 5).

[0058] The control board 37b is disposed near the light emitting diode 37a. More specifically, the control board 37b is fixed to the first partition portion 36a together with the light emitting diode 37a.

[0059] The power supply wiring 37c is accommodated in the wiring accommodation space 33c together with a harness 35c connected to the motor 35b.

[0060] (2-1-8) Reflective member 38 The reflecting member 38 reflects the ultraviolet light emitted from the ultraviolet module 37 .

[0061] The reflecting member 38 has a reflecting surface 38a that can reflect the ultraviolet light emitted by the ultraviolet module 37. The reflecting member 38 is disposed on the opposite side of the ventilation path P from the ultraviolet module 37. More specifically, the reflecting member 38 is fixed to the second partition section 36b so that the optical axis o of the light-emitting diode 37a is aligned with the reflecting surface 38a.

[0062] 5, the reflecting member 38 may be fixed to the second partition 36b so as not to protrude from the second partition 36b into the ventilation path P. In other words, the reflecting member 38 may be fixed to the second partition 36b so that the surface facing the ventilation path P is flush with the surface of the second partition 36b facing the ventilation path P. Furthermore, as shown in FIG. 5, the reflecting member 38 may be disposed in a position that overlaps with the rotor 32b included in the motor 32a that drives the utility fan 32 when viewed from the front.

[0063] (2-1-9) Control device 39 The control device 39 controls the ultraviolet module 37 and each actuator (the motor 32a of the utility fan 32 and the motor 35b of the flap 35). The control device 39 is electrically connected to the control board 37b of the ultraviolet module 37, the motor 32a, and the motor 35b via wiring. The control device 39 is housed in an electrical component box 40 and is disposed to the right of the motor 32a (see FIG. 4).

[0064] The control device 39 is realized by a computer. The control device 39 includes a control and arithmetic device and a storage device. A processor such as a CPU or a GPU can be used as the control and arithmetic device. The control and arithmetic device reads a program stored in the storage device and performs predetermined arithmetic processing in accordance with the program. Furthermore, the control and arithmetic device can write the results of calculations to the storage device and read information stored in the storage device in accordance with the program.

[0065] (3) Features (3-1) The utilization unit 30 is an indoor unit of the air conditioner 10. The utilization unit 30 includes a utilization fan 32, a utilization heat exchanger 31, and an ultraviolet module 37.

[0066] The utilization fan 32 generates an airflow f. The utilization heat exchanger 31 is a heat exchanger through which the airflow f passes. The ultraviolet module 37 has a light-emitting diode 37a that irradiates ultraviolet light onto an air passage P through which the airflow f passes after passing through the utilization heat exchanger 31.

[0067] The ventilation path P is partitioned on one side in the longitudinal direction by a first partition 36a provided on one side (left side) in the longitudinal direction of the utilization fan 32. The ultraviolet module 37 is provided in the ventilation path and is provided on one side in the longitudinal direction of a surface 36bs of the first partition 36a that faces the ventilation path P. In the utilization unit 30, the ultraviolet module 37 is provided to the left of the surface 36as of the first partition 36a that faces the ventilation path P, and therefore does not interfere with the flow of the airflow f flowing into the utilization fan 32. Therefore, the utilization unit 30 is capable of irradiating ultraviolet rays onto the conditioned air, while suppressing the generation of noise caused by the placement of the ultraviolet module 37.

[0068] (3-2) The utilization 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 outside the fin arrangement area a in which the plurality of heat transfer fins 31b are arranged in the longitudinal direction.

[0069] According to the utilization unit 30, the ultraviolet module 37 does not impede the smooth flow of the airflow f that has passed through the fin arrangement area a, so that a decrease in the heat exchange efficiency of the utilization heat exchanger 31 is suppressed.

[0070] (3-3) The first partition portion 36a is made of resin.

[0071] According to the utilization unit 30, the ultraviolet module 37 is fixed to the first partition portion 36a made of resin with low thermal conductivity, so that the ultraviolet module 37 is prevented from being heated by the heat from the utilization heat exchanger 31 during heating operation.

[0072] (3-4) The usage unit 30 further includes a reflecting member 38 and a second partition portion 36b.

[0073] The reflecting member 38 reflects the ultraviolet light emitted from the ultraviolet module 37 .

[0074] The second partition portion 36b is provided on the other side in the longitudinal direction with the ventilation path P interposed therebetween, and separates the ventilation path P together with the first partition portion 36a.

[0075] The reflecting member 38 is fixed to the second partition portion 36b so as not to protrude into the ventilation path P from the second partition portion 36b.

[0076] According to the utilization unit 30, the reflecting member 38 is not disposed in the ventilation path P, and therefore noise caused by the reflecting member 38 is also suppressed.

[0077] (3-5) The reflecting member 38 is disposed at a position overlapping with the rotor 32b included in the motor 32a that drives the utility fan 32 when viewed from the front.

[0078] (4) Variations (4-1) Variation A In the utilization unit 30 according to the above embodiment, the ultraviolet module 37 is provided in the first partition 36a, but the ultraviolet module 37 may be provided in the second partition 36b. Fig. 6 is an enlarged view of the periphery of the ultraviolet module 37 and the reflecting member 38 of the utilization unit 30 according to Modification A, as viewed from the front. For convenience, Fig. 6 shows the casing 33 and the air filter 34 in a see-through manner, and the utilization heat exchanger 31 and utilization fan 32 are partially omitted.

[0079] The ultraviolet module 37 is provided on the right side of the surface 36bs of the second partition portion 36b that faces the ventilation path P. In addition, the ultraviolet module 37 is disposed at a position overlapping with the rotor 32b included in the motor 32a that drives the utilization fan 32 when viewed from the front.

[0080] The reflecting member 38 is fixed to the first partitioning portion 36a so that the optical axis o of the light-emitting diode 37a hits the reflecting member 38. The reflecting member 38 is also fixed to the first partitioning portion 36a so that it does not protrude into the ventilation path P from the first partitioning portion 36a.

[0081] (4-2) Variation B The ultraviolet module 37 may be positioned so that the shortest distance d1 between the optical axis o of the light-emitting diode 37a and the utilization fan 32 is greater than the shortest distance d2 between the utilization heat exchanger 31 and the utilization fan 32 (see Figure 3).

[0082] The utilization fan 32 , which is larger than the ultraviolet module 37 and has a more complex shape, is more likely to obstruct the flow of the airflow f flowing into the utilization fan 32 than the ultraviolet module 37 is. According to the utilization unit 30 of variant B, the distance between the utilization fan 32 and the ultraviolet module 37 is made greater than the distance between the utilization fan 32 and the utilization heat exchanger 31, thereby making it possible to relatively reduce the influence of the ultraviolet module 37 on the flow of the airflow f flowing into the utilization fan 32, and effectively suppressing the generation of noise caused by the ultraviolet module 37.

[0083] Note that the positions of the shortest distance d1 and the shortest distance d2 shown in FIG. 3 are merely examples, and the shortest distance may be at another position.

[0084] <Conclusion> Although the embodiments of the present disclosure have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the present disclosure as defined in the claims. [Explanation of symbols]

[0085] 10: Air conditioning equipment 20: Heat source unit (outdoor unit) 30: Usage unit (indoor unit) 31: Heat exchanger (utilized heat exchanger) 31b: Heat transfer fin 32: Fan used (cross flow fan) 32a: Motor 32b: rotor 36: Partition 36a: First partition 36b: Second partition 36as :face 36bs:face 37: UV module 37a: Light-emitting diode 38: Reflective material a: Fin placement area d1: Shortest distance d2: Shortest distance f: airflow o :Optical axis P: Ventilation path [Prior art documents] [Patent documents]

[0086] [Patent Document 1] Japanese Patent Publication No. 2022-160292

Claims

1. An indoor unit (30) of an air conditioning device (10), a cross-flow fan (32) for generating an airflow (f); a heat exchanger (31) through which the air flow (f) passes; an ultraviolet module (37) having a light-emitting diode (37a) for irradiating ultraviolet light onto an air passage (P) through which the airflow (f) that has passed through the heat exchanger (31) passes; Equipped with The ventilation path (P) is a first partition portion (36a) provided on one side of the cross-flow fan (32) in the longitudinal direction, which partitions the one side in the longitudinal direction; The ultraviolet module (37) The partition wall is provided in the ventilation path (P) and is provided on the one side in the longitudinal direction of a surface (36as) of the first partition portion (36a) facing the ventilation path (P). Indoor unit (30).

2. The heat exchanger (31) A plurality of heat transfer fins (31b) are arranged at predetermined intervals in the longitudinal direction, The ultraviolet module (37) In the longitudinal direction, the heat transfer fins (31b) are arranged outside the fin arrangement area (a) in which the heat transfer fins (31b) are arranged. The indoor unit (30) according to claim 1.

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

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

5. a reflecting member (38) that reflects ultraviolet light emitted from the ultraviolet module (37); a second partition portion (36b) that is provided on the other side of the ventilation path (P) in the longitudinal direction and that partitions the ventilation path (P) together with the first partition portion (36a); Furthermore, The reflecting member (38) The second partition portion (36b) is fixed to the second partition portion (36b) so as not to protrude from the second partition portion (36b) into the ventilation path (P). The indoor unit (30) according to claim 1.

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

7. The ultraviolet module (37) The light-emitting diode (37a) is disposed at a position where 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). The indoor unit (30) according to claim 1.

8. An indoor unit (30) according to any one of claims 1 to 7; An outdoor unit (20) Air conditioning device (10).

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