JP2023162155A - Air processing device - Google Patents

Abstract

To precisely find a state of irradiation with ultraviolet light by a light source.SOLUTION: An air processing device 10 comprises: a light source 31 which irradiates the inside of a casing 41 with ultraviolet light; a temperature sensor 51 which detects an ambient temperature of a light source 31; a current sensor 32 which detects the value of an electric current supplied to the light source 31; a measurement part 24 which measures an irradiation time of the light source 31; and a controller 24, wherein the controller 24 stops, based upon the temperature of air that the temperature sensor 51 detects, the current value that the current sensor 32 detects and the irradiation time that the measurement part 24 measures, the light source 31 once the amount of irradiation with the ultraviolet light from the light source 31 reaches a target irradiation amount when the light source 31 is driven.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to an air treatment device including an ultraviolet irradiation device.

Conventionally, as an ultraviolet irradiation device, one described in Patent Document 1 below is known. This ultraviolet irradiation device includes an irradiation unit that irradiates ultraviolet rays from a light source composed of an LED, a light source power supply unit that supplies power to drive the light source, and a current value of the power supplied from the light source power supply unit. and a control unit that calculates the irradiation energy generated by the light source by integrating the energy over time. The control unit determines the degree of deterioration of the light source from the cumulative value of irradiation energy.

Japanese Patent Application Publication No. 2006-289192

The progress of deterioration of ultraviolet light sources changes depending on various factors, which also affects the calculation of irradiation conditions such as irradiation intensity and irradiation energy. In the technique described in Patent Document 1, only the current value of the light source is taken into consideration when calculating the irradiation energy, so it is difficult to accurately calculate the irradiation state.

The present disclosure aims to accurately calculate the state of irradiation of ultraviolet rays by a light source.

(1) The air treatment device of the present disclosure includes:
casing and
a light source that irradiates the inside of the casing with ultraviolet rays;
a temperature sensor that detects the temperature around the light source;
a current sensor that detects a current value supplied to the light source;
a measurement unit that measures the irradiation time of the light source;
comprising a controller;
The controller controls the amount of ultraviolet rays emitted from the light source when the light source is driven based on the temperature of the air detected by the temperature sensor, the current value detected by the current sensor, and the irradiation time measured by the measurement unit. When the irradiation amount reaches the target irradiation amount, the light source is stopped.

According to the above configuration, it is possible to accurately determine the irradiation state using not only the current value of the light source but also the surrounding temperature, and to irradiate the required amount of ultraviolet rays (target irradiation amount) from the light source. It is possible to suppress unnecessary use and improve the lifespan.

(2) In the air treatment device according to (1) above, preferably, the controller controls the irradiation intensity of ultraviolet rays from the light source based on the temperature of the air detected by the temperature sensor and the current value detected by the current sensor. is calculated, and the irradiation amount is calculated from the calculated irradiation intensity and the irradiation time.

According to the above configuration, the irradiation intensity of the light source is determined using not only the current value of the light source but also the surrounding temperature, so the irradiation intensity can be calculated more accurately than when only the current value is used, and appropriate irradiation can be performed. amount of ultraviolet light can be irradiated into the casing.

(3) The air treatment device according to (2) above preferably further includes a notification section,
The controller causes the notification unit to notify when the calculated irradiation intensity reaches a predetermined value.

According to the above configuration, when the irradiation intensity reaches a predetermined value, for example, a value corresponding to the lifespan of the light source, by having the notification unit notify that fact, the user etc. can know when it is time to replace the light source. can.

(4) The air treatment device according to (2) above preferably further includes a notification section,
The controller predicts information regarding the actual life of the light source from the rated life of the light source based on the relationship between the calculated irradiation intensity and the rated irradiation intensity of the light source, and causes the notification unit to notify the information.

According to the above configuration, the user etc. can predict the lifespan information (the irradiation time at the end of the lifespan, the remaining time until the lifespan, etc.) according to the actual usage status of the light source and have the notification unit notify it. You can know when to replace it.

(5) In the air treatment device according to any one of (1) to (4) above, preferably, the air treatment device is an indoor unit of an air conditioner.

According to the above configuration, since the indoor unit of the air conditioner controls the indoor temperature, the light source becomes easily influenced by the temperature. Therefore, it is more effective to apply the present disclosure.

1 is a schematic configuration diagram of an air treatment device according to an embodiment of the present disclosure. It is a perspective view of an indoor unit. It is a sectional view of an indoor unit. It is a block diagram of a control system of an air conditioner. It is a graph showing the relationship between irradiation time and luminescence intensity for each operating temperature of the light source. It is a graph showing the relationship between irradiation time and luminescence intensity for each current used by the light source. FIG. 3 is a diagram illustrating a method of calculating the emission intensity of a light source. FIG. 3 is a diagram illustrating a method for predicting the life of a light source. 3 is a flowchart illustrating a process performed by a controller regarding the lifespan of a light source.

(Overview of air treatment equipment)
FIG. 1 is a schematic configuration diagram of an air treatment device according to an embodiment of the present disclosure.
The air processing device 10 shown in FIG. 1 is an air conditioner. The air conditioner cools and heats the indoor space S1 in the building B by performing a vapor compression type refrigeration cycle operation. The air conditioner 10 includes an indoor unit 11. The air conditioner 10 further includes an outdoor unit 12 and a refrigerant pipe 13. The refrigerant pipe 13 includes a liquid pipe 13L and a gas pipe 13G. In the air conditioner 10, a refrigerant circuit is configured by connecting an indoor unit 11 and an outdoor unit 12 through a refrigerant pipe 13.

The indoor unit 11 is arranged in the indoor space S1, and the outdoor unit 12 is arranged in the outdoor space S2. In the air conditioner 10 shown in FIG. 1, one indoor unit 11 is connected to one outdoor unit 12, but multiple indoor units 11 are connected to one outdoor unit 12. It's okay.

(Indoor unit configuration)
FIG. 2 is a perspective view of the indoor unit. FIG. 3 is a sectional view of the indoor unit.
The indoor unit 11 of this embodiment is of a ceiling-embedded type. The indoor unit 11 includes a casing 41 and a decorative panel 42. The casing 41 is a box-shaped body with an open bottom end, and is disposed in an opening formed in the ceiling.

The decorative panel 42 is made of a rectangular plate. A suction port 42a for sucking indoor air is formed in the center of the decorative panel 42. An elongated rectangular outlet 42b is formed around the inlet 42a of the decorative panel 42 to blow out temperature-controlled air into the room. The air outlet 42b is formed at four locations along the four sides of the decorative panel 42. Each outlet 42b is provided with a flap (wind direction plate) 45 that adjusts the direction of the conditioned air blown into the room from the outlet 42b, and a motor 46 as a drive unit that drives the flap 45. . A suction grill 43 is arranged at the suction port 42a of the decorative panel 42.

Inside the casing 41, an indoor fan 21, an indoor heat exchanger 22, a filter 44, a temperature sensor 51, an ultraviolet irradiation section 30, a controller 24, etc. are provided. The indoor fan 21 includes an impeller 21a and a motor 21b serving as a drive unit that rotates the impeller 21a. The indoor fan 21 sucks indoor air through the suction port 42 a of the decorative panel 42 and blows out the air toward the indoor heat exchanger 22 .

The indoor heat exchanger 22 is bent into a substantially rectangular shape when viewed from above so as to surround the indoor fan 21 . The indoor heat exchanger 22 performs heat exchange between the refrigerant flowing therein and the air blown out from the indoor fan 21 to cool or heat the air. The air that has passed through the indoor heat exchanger 22 is blown out indoors from the outlet 42b.

The temperature sensor 51 is arranged near the suction port 42a. The temperature sensor 51 detects the temperature of air sucked in from the suction port 42a. The temperature of the air detected by the temperature sensor 51 is substantially the same as the indoor temperature.

The filter 44 is disposed below the indoor fan 21 and removes dust and the like from the indoor air sucked in through the suction port 42a. The filter 44 is not limited to one that removes dust in the air, but may be one that removes viruses, bacteria, or odor components. Filter 44 may be composed of multiple layers. Filter 44 may contain a photocatalyst.

The ultraviolet irradiation section 30 cleans the filter 44. The ultraviolet irradiation unit 30 includes a light source 31 and a current sensor 32. The light source 31 irradiates the filter 44 with ultraviolet light. The light source 31 of this embodiment is an ultraviolet LED (Light Emitting Diode). The light source 31 sterilizes the filter 44 by irradiating the filter 44 with ultraviolet light. The light source 31 may irradiate the photocatalyst included in the filter 44 with ultraviolet rays to decompose odor components and the like. Current sensor 32 detects the current flowing through light source 31 .

FIG. 4 is a block diagram of the control system of the air conditioner.
The controller 24 is composed of, for example, a microcomputer including a control section 24a such as a CPU, and a storage section 24b such as a RAM or ROM. The controller 24 may include an integrated circuit such as an FPGA or an ASIC. Detection signals from the temperature sensor 51 and the current sensor 32 are input to the controller 24 .

The controller 24 controls the cooling operation and the heating operation (controls the evaporation temperature of the refrigerant, the air volume, etc.) based on the detected value of the temperature sensor 51 and the like. The controller 24 controls the operation of the ultraviolet irradiation section 30 based on the detected values of the temperature sensor 51 and the current sensor 32.

The controller 24 measures and accumulates the irradiation time of the light source 31. Therefore, the controller 24 functions as a measurement unit that measures the irradiation time of the light source 31. However, the irradiation time may be measured using a device other than the controller 24, and the controller 24 may acquire information on the device.

The air conditioner 10 further includes a remote controller 25 communicatively connected to the controller 24. The remote controller 25 can be used to start and stop the operation of the air conditioner 10, and to set target temperature, air volume, air direction, and the like. The remote controller 25 includes a display section (notification section) that displays the operating state and setting state.

(Control of ultraviolet irradiation unit 30)
The controller 24 drives the ultraviolet irradiation unit 30 before starting or ending the cooling operation or heating operation, and irradiates the filter 44 with ultraviolet rays to clean the filter 44. Furthermore, the controller 24 stops the ultraviolet irradiation section 30 after irradiating the ultraviolet rays with the amount of irradiation necessary for cleaning the filter 44 . For this control, the controller 24 performs processing (hereinafter also referred to as "first processing") for determining the emission intensity (irradiation intensity) and irradiation amount of the ultraviolet rays irradiated onto the filter 44.

On the other hand, the light source 31 deteriorates after long-term use, and its emission intensity gradually decreases. The light source 31 reaches the end of its lifespan when the emission intensity drops to a predetermined limit value. The controller 24 performs a process of detecting the lifespan of the light source 31 (hereinafter also referred to as "second process"). Further, the controller 24 performs a process (hereinafter also referred to as "third process") of predicting the period until the light source 31 reaches the end of its life. Each process will be explained in detail below.

(About the first process)
FIG. 5 is a graph showing the relationship between irradiation time and luminescence intensity for each operating temperature of the light source. FIG. 6 is a graph showing the relationship between irradiation time and emission intensity for each current value of the light source. Note that the irradiation time in FIGS. 5 and 6 is the cumulative time during which the light source 31 irradiated ultraviolet rays, and hereinafter also referred to as "cumulative irradiation time." In FIGS. 5 and 6, the luminescence intensity is shown as a percentage of the nearly virgin state. For example, in the examples shown in FIGS. 5 and 6, the emission intensity is approximately 1.1 when the irradiation time is 0. In these graphs, the numerical values attached to the horizontal and vertical axes are merely examples and do not limit the present disclosure.

As shown in the curves (deterioration curves) shown in FIGS. 5 and 6, the light source 31 gradually decreases in light emission intensity as the cumulative irradiation time increases. In particular, as shown in FIG. 5, in the light source 31, the degree of reduction in emission intensity (degree of deterioration) changes depending on the ambient temperature (usage temperature). Specifically, if the supplied current is the same, the light source 31 operates at a higher operating temperature (e.g., the 40° C. curve in FIG. 5) than at a lower operating temperature (e.g., the 25° C. curve in FIG. 5). The faster the deterioration, the faster the deterioration will occur. In other words, the light source 31 deteriorates more quickly as the heat influence from the surroundings increases.

Further, as shown in FIG. 6, in the light source 31, the degree of reduction in emission intensity (degree of deterioration) changes depending on the magnitude of the supplied current (current used). Specifically, if the ambient temperature is the same, the light source 31 performs better when the current is large (for example, the 200 mA curve in FIG. 6) than when the current is small (for example, the 170 mA curve in FIG. 6). Deterioration accelerates. This is thought to be because the larger the current, the greater the heat generation, and the light source 31 is affected by the heat.

The controller 24 acquires information on the temperature detected by the temperature sensor 51 and information on the current value of the light source 31 detected by the current sensor 32. The controller 24 uses this information to determine the light emission intensity of the light source 31. The storage section 24b of the controller 24 holds information about the characteristics of the light source 31. For example, the storage unit 24b of the controller 24 stores information (deterioration information) indicating deterioration curves as shown in FIGS. 5 and 6 as the characteristics of the light source 31. Specifically, the storage unit 24b of the controller 24 stores information on a deterioration curve for each predetermined temperature according to the current value as shown in FIG. 5, or information on a predetermined current according to the temperature as shown in FIG. Information on deterioration curves for each value is held in the form of formulas, tables, etc.

For example, the controller 24 controls each current value in predetermined current value increments (e.g., 5 mA increments) within the range of the current used by the light source 31 (e.g., TYP value (Typical value) ±20 mA) at a predetermined temperature interval (e.g., 5°C). It holds information indicating the deterioration curve of each step. Alternatively, the controller 24 may generate a current value at each predetermined current value (for example, in 5 mA increments) for each temperature in predetermined temperature increments (for example, in 5 °C increments) within the operating temperature range of the light source 31 (for example, -10 °C to 40 °C). It holds information indicating the deterioration curve.

The controller 24 selects appropriate deterioration curve information from the detected value of the temperature sensor 51 and the detected value of the current sensor 32, and determines the light emission intensity corresponding to the current cumulative irradiation time. For example, as shown in FIG. 5, when the detected value of the temperature sensor 51 is 40° C. at a certain current value and the cumulative irradiation time is 5000 hours, the controller 24 adjusts the deterioration curve L1 at 40° C. in FIG. is used to determine the emission intensity α1 (=0.88).

When the temperature around the light source 31 changes, the controller 24 uses information about the deterioration curve at the temperature after the change. For example, as shown in FIG. 5, if the operating temperature during cumulative irradiation time of 0 to 5000 hours is 40°C, and the operating temperature during cumulative irradiation time of 5000 to 10,000 hours is 25°C, then during 0 to 5000 hours The deterioration curve L1 at 40° C. is used, and the deterioration curve L2 at 25° C. is used for 5000 to 10000 hours. In this case, since the emission intensity α1 of the light source 31 is 0.88 at the time of 5000 hours, the deterioration curve L2 at 25°C becomes the deterioration curve L2 at 40°C after 5000 hours, as shown by the dotted line L2' in FIG. It is applied continuously from the position α1=0.88 of L1. As a result, the emission intensity α2 (=0.72) of the light source 31 with a cumulative irradiation time of 10,000 hours is larger than the emission intensity α3 (=0.69) when the 40°C deterioration curve L1 is used as is. becomes. As described above, the emission intensity can be determined accurately.

As described above, the controller 24 drives the ultraviolet irradiation section 30 before starting or after the cooling operation or heating operation ends, and irradiates the filter 44 with ultraviolet rays to clean the filter 44. The controller 24 determines the amount of irradiation after the light source 31 starts irradiating ultraviolet rays. After starting the ultraviolet irradiation, the controller 24 ends the ultraviolet irradiation when the amount of ultraviolet rays necessary to clean the filter 44 has been irradiated. In other words, the ultraviolet irradiation section 30 is driven for the irradiation time necessary to clean the filter 44. This irradiation amount can be determined by multiplying the emission intensity of the light source 31 determined as described above by the irradiation time and accumulating the result. In other words, the irradiation amount can be determined by the integral value of the deterioration curve applied according to the operating temperature and operating current as described above.

Since accurate light emission intensity and irradiation amount can be obtained through the above first processing, ultraviolet rays can be irradiated from the light source 31 to the filter 44 for only the time required to clean the filter 44, and unnecessary irradiation of the light source 31 is avoided. can be reduced, and the lifespan (usage limit) of the light source 31 can be extended.

(About the second process)
When the light source 31 reaches the end of its life, the controller 24 notifies the light source 31 of this fact. For example, the controller 24 makes a notification using the display section (notification section) of the remote controller 25 of the air conditioner 10. The lifespan of the light source 31 can be detected, for example, when the emission intensity of the light source 31 reaches a predetermined value α4 (see FIG. 5; for example, α4=0.5). The lifespan of the light source 31 may be detected when the total amount of irradiation from the light source 31 reaches a predetermined value.

In this embodiment, the light emission intensity and irradiation amount of the light source 31 are determined using appropriate deterioration curve information according to the operating temperature and operating current, so that it is possible to accurately determine that the light source 31 has reached the end of its service life. As a result, the usable irradiation time of the light source 31 can be extended (substantial life span).

Conventionally, taking into account variations in the performance of the light source 31 and assuming that it will be used under the most severe conditions (high temperature, high current), the light source 31 has been designed to emit light until it reaches its usage limit (life span). A cumulative irradiation time is set, and the life of the light source 31 is detected when the cumulative irradiation time is reached. For example, if the deterioration curve when the light source 31 is used at the highest operating temperature and operating current is the deterioration curve L1 shown in FIG. Regardless of changes in operating temperature and operating current, the life span is detected at the cumulative irradiation time h1 (approximately 16,000 hours) at which the emission intensity is expected to be α4. On the other hand, in this embodiment, a deterioration curve according to the operating temperature and operating current is applied, so if the operating temperature after 5000 hours is 25°C, the deterioration curve L2 at 25°C (actual The luminescence intensity is determined using the curves L2', L2''), and the lifetime is detected at the cumulative irradiation time h2 (approximately 18,500 hours) when the luminescence intensity becomes α4. Therefore, the difference in cumulative irradiation time (h2 -h1) can extend the usage limit (lifetime period) and increase the lifespan.

(About the third process)
FIG. 8 is a diagram illustrating a method for predicting the life of a light source. A curve L3 shown in FIG. 8 is a deterioration curve when the light source 31 is used under standard usage conditions (standard temperature and standard current). The standard temperature and standard current are, for example, rated values written in the product data sheet as indicating the characteristics of the light source 31. The curve L4 shown in FIG. 8 is a deterioration curve applied according to the actual operating temperature and operating current as described above. For example, the luminous intensity (rated luminous intensity) according to the deterioration curve L3 at an arbitrary time h3 is α6 = 0.65, and the luminous intensity α5 according to the deterioration curve L4 at the actual operating temperature and current is α5 = 0.70. Become.

The controller 24 predicts lifespan information according to actual usage conditions based on the relationship between the actual luminous intensity α5 and the rated luminous intensity α6 at an arbitrary time h3. Specifically, the controller 24 determines the degree of deterioration of the light source 31 under standard usage conditions and the degree of deterioration of the light source 31 under actual usage conditions. The degree of deterioration of the light source 31 in the standard usage condition is the value (1.0 - α6 = 0) obtained by subtracting the emission intensity at time h3 (α6 = 0.65) from the emission intensity in the unused state (=1.0). .35). The degree of deterioration of the light source 31 in the actual usage condition is the value (1.0 - α5 =0.30). The controller 24 determines the ratio between the standard degree of deterioration and the actual degree of deterioration (0.35/0.30=1.17 (117%)), and sets this ratio as the usage limit (rated life) under standard usage conditions. By multiplying by For example, if the usage limit h4 in the standard usage state is 20,000 hours, the controller 24 predicts the usage limit h5 in the actual usage state to be 2000 hours x 1.17 = 23,400 hours.

The controller 24 can also predict the usage limit in actual usage conditions by the following method. Specifically, the actual deterioration curve L4 is applied until an arbitrary time h3, and after that, the standard deterioration curve L3 (actually, the curve L3 in FIG. ') can be applied, and then the time h5 when the emission intensity α4 (for example, α4=0.5), which is the usage limit, is reached can be set as the usage limit.

The controller 24 can display information on the predicted lifespan on the display section of the remote controller 25. The lifetime information can be the cumulative irradiation time that is predicted to reach the lifetime. Alternatively, the lifetime information may be the remaining time until the cumulative irradiation time that is predicted to reach the lifetime. The user or the like can know when to replace the light source 31 from the notified lifespan information.

FIG. 9 is a flowchart illustrating a process performed by the controller regarding the life of the light source. The flow of the first to third processes described above will be described below with reference to FIG.
The controller 24 acquires the operating temperature from the temperature sensor 51 in step S1, and acquires the value of the current supplied to the light source 31 from the current sensor 32 in step S2. In step S3, the controller 24 selects the information on the deterioration curve according to the acquired operating temperature and operating current.

In step S4, the controller 24 calculates the luminescence intensity using the information on the selected deterioration curve. Next, in step S5, the controller 24 calculates the irradiation amount using the calculated light emission intensity.

In step S6, the controller 24 determines whether the light source 31 has reached the end of its lifespan based on the calculated light emission intensity or irradiation amount. If the determination in step S6 is affirmative (Yes), the controller 24 advances the process to step S7 and notifies via the display section of the remote controller 25 that the light source 31 has reached the end of its lifespan.

If the determination in step S6 is negative (No), the controller 24 advances the process to step S8 and predicts the time (cumulative irradiation time) when the life span will be reached. Next, in step S9, the controller 24 notifies information on the predicted lifespan via the display section of the remote controller 25. The controller 24 repeatedly executes the above series of processes as the light source 31 is driven.

(Other processing)
In addition to the first to third processes described above, the controller 24 can perform the following processes. The controller 24 determines that the emission intensity of the light source 31 determined from the information on the deterioration curve according to the operating temperature and the operating current is lower than the emission intensity of the light source 31 in an initial state without deterioration (1.1 in the example of FIG. 5). In this case, the light source 31 may be driven so that the light emission intensity is equal to that in the initial state by increasing the current supplied to the light source 31. When the operating temperature is above a predetermined value, the controller 24 may prohibit driving of the light source 31 in order to suppress deterioration of the light source 31, or may drive the light source 31 with the output limited. Good too. In the latter case, the filter 44 can be cleaned while suppressing deterioration of the light source 31.

[Operations and effects of embodiment]
(1) The air processing device 10 of the above embodiment, which is exemplified by an air conditioner, includes a casing 41, a light source 31 that irradiates the inside of the casing 41 with ultraviolet rays, and a temperature sensor 51 that detects the temperature around the light source 31. , a current sensor 32 that detects the value of the current supplied to the light source 31, a measurement unit 24 that measures the irradiation time of the light source 31, and a controller 24. The controller 24 controls the amount of ultraviolet rays emitted from the light source 31 when the light source 31 is driven based on the air temperature detected by the temperature sensor 51, the current value detected by the current sensor 32, and the irradiation time measured by the measurement unit 24. When the irradiation amount reaches the target irradiation amount, the light source 31 is stopped. According to this configuration, it is possible to accurately determine the irradiation state using not only the current value of the light source 31 but also the surrounding temperature, and to irradiate the light source 31 with ultraviolet rays of the necessary irradiation amount (target irradiation amount). It is possible to suppress wasteful use of and improve the lifespan. Furthermore, in the above embodiment, since the temperature sensor 51 used for indoor temperature control in the air conditioner 10 is used to detect the temperature around the light source 31, it is necessary to newly provide a temperature sensor dedicated to the light source 31. There is no

(2) In the air processing device 10 of the above embodiment, the controller 24 calculates the irradiation intensity of ultraviolet rays from the light source 31 based on the temperature of the air detected by the temperature sensor 51 and the current value detected by the current sensor 32. , the irradiation amount is calculated from the calculated irradiation intensity and irradiation time. As a result, the irradiation intensity of the light source 31 is calculated using not only the current value of the light source 31 but also the temperature around the light source 31, so the irradiation intensity can be calculated more accurately than when only the current value is used, and the irradiation intensity can be appropriately calculated. The inside of the casing 41 can be irradiated with ultraviolet rays of a certain amount.

(3) The air processing apparatus 10 of the above embodiment further includes a notification unit (remote controller) 25, and the controller 24 causes the notification unit 25 to notify when the calculated irradiation intensity reaches a predetermined value. According to this configuration, when the irradiation intensity reaches a predetermined value, for example, a value corresponding to the lifespan of the light source 31, the notification unit 25 notifies the user to know when to replace the light source 31. can do.

(4) The air treatment device 10 of the above embodiment further includes a notification unit 25, and the controller 24 operates based on the relationship between the calculated irradiation intensity α5 and the rated irradiation intensity α6 of the light source 31, as shown in FIG. , predicts information regarding the actual lifespan h5 of the light source 31 from the rated lifespan h4 of the light source 31, and causes the notification unit 25 to notify the information. According to this configuration, the user etc. can predict the lifespan information (cumulative irradiation time that will reach the lifespan, remaining time until the lifespan, etc.) according to the actual usage state of the light source 31 and have the notification unit 25 notify it. It is possible to know when to replace the light source 31.

(5) The air processing device 10 of the above embodiment is an indoor unit 11 of an air conditioner. Since the indoor unit 11 of the air conditioner controls the indoor temperature, the light source 31 is easily affected by the temperature. Therefore, it is more effective to apply the configuration of the above embodiment.

Although the embodiments 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 claims.
Although the air processing apparatus of the above embodiment is an air conditioner, it is not limited to an air conditioner as long as it has a light source that irradiates the filter with ultraviolet rays. The air treatment device may be, for example, an air cleaner. The light source may be one that irradiates ultraviolet light onto something other than the filter. Notification that the light source has reached the end of its lifespan and notification of information on the predicted lifespan are not limited to notification on the display section of the remote controller 25, and may be notification using sound, light, or the like. These notifications may be notifications using a device other than the remote controller 25.

10: Air conditioner (air treatment device)
24: Controller 25: Remote controller (notification section)
31: Light source 32: Current sensor 41: Casing 51: Temperature sensor

Claims (5)

a casing (41);
a light source (31) that irradiates the inside of the casing (41) with ultraviolet rays;
a temperature sensor (51) that detects the temperature around the light source (31);
a current sensor (32) that detects the value of the current supplied to the light source (31);
a measurement unit (24) that measures the irradiation time of the light source (31);
A controller (24);
The controller (24) determines the temperature of the air based on the temperature of the air detected by the temperature sensor (51), the current value detected by the current sensor (32), and the irradiation time measured by the measuring section (24). An air processing device that stops the light source (31) when the amount of ultraviolet rays from the light source (31) reaches a target amount when the light source (31) is driven. The controller (24) calculates the irradiation intensity of ultraviolet rays from the light source (31) based on the temperature of the air detected by the temperature sensor (51) and the current value detected by the current sensor (32), The air processing device according to claim 1, wherein the irradiation amount is calculated from the calculated irradiation intensity and the irradiation time. Further equipped with a notification section (25),
The air processing apparatus according to claim 2, wherein the controller (24) causes the notification section (25) to notify when the calculated irradiation intensity reaches a predetermined value. Further equipped with a notification section (25),
The controller (24) obtains information regarding the actual lifespan of the light source (31) from the rated lifespan of the light source (31) based on the relationship between the calculated irradiation intensity and the rated irradiation intensity of the light source (31). The air processing device according to claim 2, wherein the prediction is made and the notification section (25) makes the notification. The air processing device according to any one of claims 1 to 4, wherein the air processing device (10) is an indoor unit (11) of an air conditioner.

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