JP6832766B2 - Humidifier and its control method - Google Patents

Description

The present disclosure relates to a humidifier and a method for controlling the humidifier.

In recent years, due to increasing health consciousness, a humidifying device for giving appropriate humidity to indoor air has been widely used. For example, vaporization-type humidifiers that realize humidification without heating and evaporating water are becoming more widespread because they can control humidity without affecting the temperature inside the room.

Japanese Unexamined Patent Publication No. 2005-98630 (Patent Document 1) discloses a humidifying device that automatically controls an appropriate humidifying amount according to the temperature and humidity in a room. The humidifying device has a continuous operation mode in which the blowing means for blowing air through the humidifying filter is continuously operated and an intermittent operation mode in which the blowing means is intermittently operated according to the difference between the detected humidity detected by the humidity sensor and the preset humidity. Switching control to.

Japanese Unexamined Patent Publication No. 2005-98630

The indoor air temperature fluctuates due to fluctuations in outside air temperature, on / off of heating / cooling, etc. In the case of a house that is highly airtight and cannot be expected to be sufficiently ventilated, dew condensation may occur due to an increase in relative humidity as the temperature decreases. The humidifying device according to Patent Document 1 is studying appropriate humidification control and maintaining a comfortable indoor space, but does not teach or suggest any technical means for preventing dew condensation in the room.

It is an object of the present disclosure to provide a humidifying device capable of preventing dew condensation while giving appropriate humidity to indoor air in a certain aspect, and a control method thereof.

According to certain embodiments, a humidifying device configured to be able to humidify the room is provided. The humidifier has a measuring unit that measures the indoor air temperature and the relative humidity in the room, an input unit that accepts the input of the expected minimum temperature outside the room, the lowest temperature in the past, and the minimum temperature in the room. A predictor that predicts the future indoor minimum temperature based on the correlation with the outdoor temperature at that time and the expected minimum outdoor temperature, and the predicted indoor temperature with respect to the saturated water vapor amount at the current indoor temperature. It is provided with a calculation unit that calculates the ratio of the saturated water vapor amount at the lowest temperature as the target relative humidity, and a humidification control unit that executes humidification control so that the relative humidity in the room becomes less than the target relative humidity.

According to other embodiments, a method of controlling a humidifier configured to humidify the room is provided. The control method includes a step of measuring the indoor air temperature and the relative humidity in the room, a step of accepting an input of the expected minimum air temperature outside the room, a past minimum air temperature in the room, and when the room reaches the minimum air temperature. The step of predicting the future indoor minimum temperature based on the correlation with the outdoor temperature and the expected outdoor minimum temperature, and the predicted indoor minimum with respect to the saturated water vapor amount at the current indoor temperature. It includes a step of calculating the ratio of the saturated water vapor amount at the air temperature as a target relative humidity and a step of executing humidification control so that the relative humidity in the room becomes less than the target relative humidity.

According to the present disclosure, dew condensation can be prevented while giving appropriate humidity to the indoor air.

It is a figure which showed the schematic structure of the information processing system according to Embodiment 1. It is a front perspective view of the humidifying apparatus according to Embodiment 1. It is a rear perspective view of the humidifying apparatus according to the first embodiment, and is the figure which removed some parts from the main body. It is a block diagram for demonstrating an example of the hardware configuration of the humidifier according to Embodiment 1. FIG. It is a functional block diagram of the humidifier according to Embodiment 1. FIG. It is a figure which shows the correlation between the minimum indoor air temperature and the outdoor air temperature. It is a figure which shows an example of the processing procedure of the humidifier according to Embodiment 1. FIG. It is a functional block diagram of the humidifier according to Embodiment 2. It is a figure for demonstrating the calculation method of the amount of water vapor lost by ventilation in a room. It is an image diagram for demonstrating the advantage by correction of a target relative humidity.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are designated by the same reference numerals. Their names and functions are the same. Therefore, the detailed description of them will not be repeated.

[Embodiment 1]
<System configuration>
FIG. 1 is a diagram showing a schematic configuration of an information processing system 1000 according to the first embodiment. With reference to FIG. 1, the information processing system 1000 includes a humidifying device 100, a wireless router 600, and a server 900. The humidifier 100 and the wireless router 600 are installed in the building 800.

In the information processing system 1000, the humidifying device 100 is communicably connected to the server 900 via the wireless router 600 and the network 700. The network 700 includes various networks such as the Internet and a mobile terminal communication network.

The humidifying device 100 is, for example, a device for humidifying the interior of the building 800. In the present embodiment, the humidifying device 100 will be described as an air purifier having a humidifying function and a function of purifying the air with a purifying filter for purifying the air in the room. However, the humidifying device 100 may be a device dedicated to humidification that does not have an air purifying function.

The server 900 is, for example, a device operated by the Japan Meteorological Agency or a meteorological company. The server 900 distributes past, present, and future weather information from all over the country. Specifically, the server 900 distributes information on past actual weather data (for example, temperature, humidity, weather, etc.) and expected weather data (for example, expected maximum temperature, expected minimum temperature, weather forecast, etc.).

The humidifying device 100 humidifies the room based on the information acquired from the server 900 and the indoor temperature information and the humidity information so that dew condensation does not occur in the room. The detailed treatment of the humidifier 100 will be described later.

<Appearance and internal structure of humidifier>
FIG. 2 is a front perspective view of the humidifying device according to the first embodiment. FIG. 3 is a rear perspective view of the humidifying device according to the first embodiment, and is a view in which some parts are removed from the main body.

With reference to FIGS. 2 and 3, the humidifying device 100 according to the first embodiment has a housing 1, is provided with an outlet 17 and a suction port 18 on the front side 23, and a tank receiver 40 and a side surface side. A water supply tank 41 is provided. An operation panel 204 is provided on the upper surface of the housing 1 of the humidifier 100.

The air outlet 17 is provided with a plurality of juxtaposed vertical wind direction plates 17a and horizontal wind direction plates 17b (a posture extending in a substantially horizontal direction). The suction port 18 has a substantially rectangular shape when viewed from the front. A dustproof filter is detachably attached to the suction port 18 in a vertical position.

Inside the housing 1, a purifying filter accommodating portion (not shown) for accommodating various purifying filters is formed. The purification filter storage portion is a space that is open to the rear surface side of the housing 1 and is recessed in a rectangular parallelepiped shape. The deodorizing filter 7a and the dust collecting filter 7b are stacked and stored in the purifying filter storage unit in this order from the rear side.

On the rear surface side of the humidifying device 100, a removable rear panel 2b that covers the opening of the purification filter accommodating portion is provided. The rear panel 2b is provided with a suction port 2a and an outlet 15. The deodorizing filter 7a and the dust collecting filter 7b are prevented from falling off from the purifying filter accommodating portion by the rear panel 2b.

A humidifying filter unit 3 and a water tank 4 corresponding to a water storage tank are provided on the front side of the dust collecting filter 7b. The water tank 4 is placed on the bottom plate of the housing 1, and together with the humidifying filter unit 3 supported by the water tank 4, can be pulled out from one side portion (right side in the front view) of the housing 1.

The humidifying filter unit 3 has water absorption and breathability, and includes a disk-shaped water absorption filter 31 folded in a zigzag manner and an annular holding frame 30 for storing and holding the water absorption filter 31. A ring gear 32 having teeth formed over the entire circumference is provided on the outer peripheral surface of the holding frame 30 at the center in the width direction. A part of the outer peripheral side of the water absorption filter 31 is arranged so that it can be flooded in the water tank 4.

<Hardware configuration>
(Humidifier)
FIG. 4 is a block diagram for explaining an example of the hardware configuration of the humidifier according to the first embodiment. With reference to FIG. 4, the humidifier 100 includes a processor 202, a memory 203, an operation panel 204, a speaker 206, a temperature sensor 208, a humidity sensor 210, an ion generator 212, a drive circuit 214, and the like. It includes a fan 216 and a communication interface (I / F) 218. The humidifying device 100 further includes a timer for measuring time and an input / output interface for inputting / outputting to / from an external device.

The processor 202 is typically an arithmetic processing unit such as a CPU (Central Processing Unit) or an MPU (Multi Processing Unit). The processor 202 controls the operation of each part of the humidifying device 100 by reading and executing the program stored in the memory 203.

The memory 203 is realized by a RAM (Random Access Memory), a ROM (Read-Only Memory), or the like. The memory 203 stores a program executed by the processor 202, data used by the processor 202, and the like.

The operation panel 204 includes various buttons (power button, air cleaning on button, humidified air cleaning on button, air volume switching button, voice guide button, etc.), a display for displaying various information, and a display lamp. The indicator lamps include a maintenance lamp for notifying the maintenance time such as cleaning of equipment, a water supply lamp for notifying the water supply time, and the like.

The speaker 206 outputs audio under the control of the processor 202. For example, by operating the voice guide button, information on the operation and operation of the humidifying device 100 is output by voice via the speaker 206.

The temperature sensor 208 detects the ambient temperature of the humidifier 100. The humidity sensor 210 detects the humidity around the humidifier 100.

The ion generator 212 generates positive and negative ions. The ion generator 212 is provided with a needle-shaped discharge electrode (not shown) so as to be exposed in the air passage, and supplies an AC waveform or impulse waveform voltage to the discharge electrode from a feeding portion (not shown). The discharge electrode generates ions.

The drive circuit 214 rotates and drives the fan 216 based on the command of the processor 202. When the fan 216 is rotated by driving the drive circuit 214, external air (indoor air) is sucked from the suction port 2a of the rear panel 2b, and the sucked air passes through the deodorizing filter 7a and the dust collecting filter 7b. In addition, it is purified into air that is free of odors and dust.

The purified air is humidified by the water absorption filter 31 (when the humidification operation is ON) or is not humidified (when the humidification operation is OFF), passes through, and is sucked into the center of the fan 216. The air sucked into the center of the fan 216 is blown into the room from the air outlet 15. When the air volume of the fan 216 is increased, the amount of air passing through the humidifying filter unit 3 increases, so that the amount of water vaporized increases.

The communication interface (I / F) 218 is a communication interface for exchanging various data with another device (for example, a server 900), and is realized by an adapter, a connector, or the like. The communication method may be a wireless communication method using a wireless LAN or the like, or a wired communication method using USB (Universal Serial Bus) or the like.

(server)
The server 900 only needs to be able to provide information processing as described later as a whole, and a known hardware configuration can be adopted. For example, the server 900 receives a processor for executing various processes, a memory for storing programs and data, a communication interface for transmitting and receiving various data to and from the humidifying device 100, and instructions from an administrator. Includes an input interface for.

<Functional configuration>
FIG. 5 is a functional block diagram of the humidifying device 100 according to the first embodiment. With reference to FIG. 5, the humidifying device 100 has, as main functional configurations, an information input unit 302, a measuring unit 306, a relationship calculation unit 308, a prediction unit 310, a target humidity calculation unit 312, and a humidification control unit. 314 and is included. These functions are typically realized by the processor 202 of the humidifier 100 executing a program stored in the memory 203. Note that some or all of these functional configurations may be realized by hardware. Further, the humidifying device 100 further includes a history information storage unit 304 realized by the memory 203.

The information input unit 302 receives (receives) the input of weather information from the server 900 via the communication interface 218. Specifically, the information input unit 302 provides outdoor expected temperature information (for example, expected minimum temperature and its time) and outside temperature information (actual values of past and present outside air temperature) in the area where the building 800 is provided. And, the humidity information of the outside air (actual value of the humidity of the outside air in the past and present) is received. Typically, the information input unit 302 stores the outside air temperature information in the history information storage unit 304. As a result, the history information storage unit 304 stores the history information of the outside air temperature in the predetermined period A (for example, the past several months up to the present) from the past to the present. The information input unit 302 may be configured to receive input of expected minimum air temperature, outside air temperature information, and outside air humidity information via the operation panel 204.

The information input unit 302 outputs the acquired expected minimum outdoor air temperature (hereinafter, also referred to as “expected minimum outside air temperature”) to the prediction unit 310. The expected minimum outside air temperature is the expected minimum outside air temperature during the period in which the humidifying device 100 is provided to prevent dew condensation, and is, for example, the expected minimum outside air temperature today or tomorrow.

The measuring unit 306 measures the air temperature in the room where the humidifying device 100 is provided (hereinafter, also referred to as “indoor air temperature”) using the temperature sensor 208, and uses the humidity sensor 210 to measure the relative humidity (hereinafter, also referred to as “indoor air temperature”) in the room. Hereinafter, it is also referred to as “indoor humidity”). Relative humidity is a ratio (percentage) of the actual measured value of water vapor, with the maximum amount of water vapor (saturated water vapor) that can be contained in the atmosphere at a certain temperature as 100. The measuring unit 306 stores the measured indoor air temperature and indoor humidity in the history information storage unit 304. As a result, the history information storage unit 304 stores the history information of the indoor air temperature and the indoor humidity of the predetermined period B from the past to the present. The predetermined period A and the predetermined period B may be the same or different.

The relationship calculation unit 308 refers to the history information storage unit 304 (specifically, with reference to the history information of the outside air temperature and the history information of the room temperature), and the past minimum temperature in the room and the room are The correlation K with the outdoor air temperature when the minimum temperature is reached (time) is calculated.

FIG. 6 is a diagram showing the correlation between the indoor air temperature and the outdoor air temperature. The vertical axis (Y-axis) in FIG. 6 indicates the minimum indoor air temperature (° C.) in a day, and the horizontal axis (X-axis) indicates the outside air temperature (° C.) when the indoor air temperature reaches the minimum temperature. Shown. The straight line 500 in FIG. 6 is a straight line that linearly approximates the indoor minimum air temperature and the outside air temperature. Typically, the relationship calculation unit 308 calculates the straight line as information indicating the correlation K between the indoor air temperature and the outdoor air temperature. The relationship calculation unit 308 outputs the correlation K (for example, an expression showing a straight line) to the prediction unit 310.

In FIG. 6, the relationship calculation unit 308 obtains the correlation K based on a scatter plot in which the minimum indoor air temperature in a day is on the vertical axis and the outside air temperature when the minimum air temperature is reached is on the horizontal axis. However, the configuration is not limited to this. For example, the relationship calculation unit 308 correlates based on a scatter plot in which the indoor minimum temperature for a predetermined period (for example, one week) is the vertical axis and the outside air temperature when the minimum temperature is reached is the horizontal axis. The configuration may be such that the relationship K is obtained. Further, the relation calculation unit 308 may be configured to obtain the correlation K by using various approximation methods such as logarithmic approximation other than linear approximation and polynomial approximation.

Again, with reference to FIG. 5, the prediction unit 310 predicts the future indoor minimum temperature based on the correlation K and the expected minimum outside air temperature received by the information input unit 302. For example, suppose that the equation of the straight line showing the correlation K is "Y = aX + c". In this case, Y is calculated by substituting the expected minimum outside air temperature into X, and this is used as the predicted value of the future indoor minimum temperature. The prediction unit 310 outputs the predicted minimum temperature in the room to the target humidity calculation unit 312.

Specifically, when the information input unit 302 receives the input of the expected minimum outdoor temperature within a predetermined time (for example, within 24 hours) from the present, the prediction unit 310 has the correlation K and the predetermined time from the present. Predict the indoor minimum temperature within a predetermined time from the present based on the expected minimum outdoor temperature within. The predetermined time is arbitrarily set by the user. For example, the humidifying device 100 receives information indicating when it is desired to prevent dew condensation (that is, information indicating a predetermined time) from the present to the future (for example, 24 hours ahead) via the operation panel 204.

The target humidity calculation unit 312 calculates the ratio of the saturated water vapor amount at the minimum indoor temperature predicted by the prediction unit 310 to the saturated water vapor amount at the current indoor temperature as the target relative humidity. For example, assume that the current air temperature (air temperature around the humidifier 100) measured by the measuring unit 306 is 25 ° C, and the predicted future minimum temperature in the room is 15 ° C. In this case, the saturated water vapor amount at 25 ° C. is 23.1 g / m3, and the saturated water vapor amount at 15 ° C. is 12.8 g / m3, so the target relative humidity is 55.4%. Is calculated.

As the current temperature rises, the saturated water vapor content increases, so the target relative humidity decreases. On the other hand, as the current temperature decreases, the saturated water vapor content decreases, so the target relative humidity increases. Therefore, the target humidity calculation unit 312 sequentially changes the target relative humidity according to the current air temperature.

The humidification control unit 314 executes the humidification control so that the relative humidity in the room becomes less than the target relative humidity. Specifically, the humidification control unit 314 controls the humidification amount by controlling the ON / OFF time width of the humidification operation and controlling the rotation speed of the humidification rotor of the fan 216 per hour. For example, the humidification control unit 314 is driven to increase the amount of humidification by transmitting a control signal to the drive circuit 214 so as to increase the rotation speed of the humidifying rotor of the fan 216, and to decrease the rotation speed of the humidifying rotor of the fan 216. The amount of humidification is reduced by transmitting a control signal to the circuit 214.

In this way, if the target relative humidity is set according to the current temperature, the amount of water vapor at the current temperature will be the amount of saturated water vapor at the predicted future minimum temperature in the room (that is, 12.8 g / g /. Since it does not exceed m3), dew condensation in the room can be prevented.

<Processing procedure>
FIG. 7 is a diagram showing an example of a processing procedure of the humidifying device 100 according to the first embodiment. Each step of the humidifier 100 below is realized mainly by the processor 202 executing the program stored in the memory 203. For example, the user wants to humidify the room for 24 hours from the present time while preventing dew condensation in the room. Further, it is assumed that the correlation K is stored in the memory 203. The processor 202 repeatedly executes the process shown in FIG. 7 at a predetermined control cycle.

With reference to FIG. 7, the processor 202 of the humidifier 100 detects the room temperature via the temperature sensor 208 and the room relative humidity via the humidity sensor 210 (step S10). The processor 202 receives the expected minimum outside air temperature within 24 hours from the present time via the communication interface 218 (step S12). The processor 202 predicts the indoor minimum air temperature within 24 hours based on the correlation K read from the memory 203 and the expected minimum outside air temperature received (step S14).

The processor 202 calculates the target relative humidity based on the saturated water vapor amount at the current indoor air temperature and the saturated water vapor amount at the predicted minimum indoor air temperature within 24 hours (step S16). The processor 202 executes humidification control so that the relative humidity in the room becomes less than the target relative humidity (step S18).

<Advantage>
According to the first embodiment, by adjusting the target relative humidity according to the current air temperature, it is possible to prevent dew condensation while giving an appropriate humidity to the indoor air.

[Embodiment 2]
In the second embodiment, the configuration for correcting the target relative humidity described above will be described in consideration of the ventilation in the room.

FIG. 8 is a functional block diagram of the humidifying device 100A according to the second embodiment. With reference to FIG. 8, the functional configuration of the humidifying device 100A corresponds to a configuration in which a ventilation water vapor amount calculation unit 316 and a correction unit 318 are added to the functional configuration of the humidifying device 100.

The ventilation water vapor amount calculation unit 316 calculates the amount of water vapor lost due to ventilation in the room. Hereinafter, a specific calculation method will be described.

FIG. 9 is a diagram for explaining a method of calculating the amount of water vapor lost due to ventilation in the room. FIG. 9A is an image diagram showing the time change of the relative humidity in the room. FIG. 9B is an image diagram showing the time change of the humidification amount of the humidifier 100A. Initially, the relative humidity in the room shall be less than the target relative humidity.

With reference to FIG. 9, the humidifier 100A supplies the indoor air with the amount of water vapor lost per unit time due to indoor ventilation when the indoor relative humidity is higher than the outdoor relative humidity. If it is smaller than the amount of water vapor (humidification amount) per unit time, the relative humidity in the room rises and reaches the target relative humidity (see FIG. 9A).

When the relative humidity in the room reaches the target relative humidity, the humidifying device 100A maintains the relative humidity at the target relative humidity by controlling the humidification amount. The amount of water vapor per unit time supplied to the room by the humidifier 100A when the relative humidity in the room maintains the target relative humidity coincides with the amount of water vapor per unit time lost due to ventilation. In other words, in order to maintain the target relative humidity, the humidifying device 100 supplies the same amount of humidification (corresponding to the required amount of humidification in FIG. 9B) to the room as the amount of water vapor lost by ventilation.

Here, the amount of water vapor lost by ventilation (hereinafter, also referred to as "ventilated water vapor amount") is represented by the following relational expression (1). Absolute humidity is the density (mass per volume) of water vapor contained in the atmosphere.

Ventilated water vapor amount = (absolute humidity of indoor air-absolute humidity of outdoor air) x (volume of ventilated air) ... (1)
The absolute humidity of the air in the room is measured by the measuring unit 306 using the humidity sensor 210. The absolute humidity of the outdoor air is acquired from the server 900 by the information input unit 302. The amount of ventilation water vapor when the relative humidity in the room maintains the target relative humidity is known because it corresponds to the amount of humidification supplied to the room from the humidifier 100A.

Therefore, the ventilation water vapor amount calculation unit 316 uses the absolute humidity of the indoor air, the absolute humidity of the outdoor air, the ventilation water vapor amount, and the relational expression (1) to obtain the ventilation of the air per unit time. The volume (hereinafter, also referred to as "ventilation volume") can be calculated. The ventilation water vapor amount calculation unit 316 sequentially stores the ventilation amount per unit time as history information in the history information storage unit 304. The average value of the ventilation volume per unit time accumulated in the history information storage unit 304 serves as an index showing how much the room is ventilated per unit time.

Next, the ventilation water vapor amount calculation unit 316 estimates the ventilation water vapor amount (hereinafter, also referred to as “total ventilation water vapor amount”) lost from the current time to the time when the lowest temperature in the room is observed. The current time is t1, and the time when the indoor air temperature reaches the indoor minimum temperature (hereinafter, also referred to as “predicted minimum temperature”) predicted by the prediction unit 310 is t2. However, it is assumed that the time t2 is the same time as the time of the expected minimum temperature outside the room and is known.

Here, assuming that the amount of draft in the room, the operating state of the 24-hour ventilation fan, and the like are constant, the ventilation volume per unit time in the room in the period T is constant. Therefore, the ventilation volume substantially matches the average value of the ventilation volume per unit time in the past accumulated in the history information storage unit 304. Further, the estimated value of the absolute humidity of the outdoor air at the time t in the period T can be obtained from the server 900 or the like. Therefore, assuming that the absolute humidity of the indoor air in the period T is constant, the amount of ventilation water vapor in the period T is expressed as a function of the time t using the equation (1).

The ventilation water vapor amount calculation unit 316 time-integrates the ventilation water vapor amount which is a function of the time t in the period T from the current time t1 to the time t2, so that the total ventilation water vapor amount lost from the current time t1 to the time t2. To estimate. That is, the total ventilation water vapor amount is a time integral value of the ventilation water vapor amount in the period T.

Again, with reference to FIG. 8, the correction unit 318 corrects the target relative humidity based on the amount of water vapor lost due to ventilation in the room.

Specifically, the correction unit 318 calculates the corrected water vapor amount by adding the total ventilation water vapor amount calculated (estimated) by the ventilation water vapor amount calculation unit 316 to the saturated water vapor amount at the predicted minimum temperature. The correction unit 318 corrects the target relative humidity calculated by the target humidity calculation unit 312 so as to be the ratio of the corrected water vapor amount to the saturated water vapor amount at the current indoor air temperature.

In this way, when the target relative humidity calculated by the target humidity calculation unit 312 is corrected by the correction unit 318, the humidification control unit 314 humidifies the room so that the relative humidity in the room is less than the corrected target relative humidity. Take control.

FIG. 10 is an image diagram for explaining the advantages of correcting the target relative humidity. FIG. 10 shows a psychrometric chart showing a change of state of air. Here, it is assumed that the current temperature is 25 ° C and the predicted minimum temperature in the room is 15 ° C.

The target relative humidity before being corrected by the correction unit 318 (that is, the target relative humidity calculated by the target humidity calculation unit 312) is the saturated water vapor amount at the predicted minimum temperature in the room with respect to the saturated water vapor amount at the current temperature. Is the ratio of. Therefore, the target relative humidity corresponds to the relative humidity at the point C2 where the air temperature changes from the point C1 corresponding to the air temperature of 15 ° C. and the relative humidity of 100% to 25 ° C. in FIG.

On the other hand, for the target relative humidity corrected by the correction unit 318, the corrected water vapor amount was added to the state of the point C1 corresponding to the air temperature of 15 ° C. and the relative humidity of 100% (that is, the absolute humidity increased by the corrected water vapor amount). ) Corresponds to the relative humidity at point C4 where the temperature changed from point C3 to 25 ° C. That is, the corrected target relative humidity (relative humidity corresponding to the point C4) is larger than the uncorrected target relative humidity (relative humidity corresponding to the point C2). This makes it possible to keep the relative humidity in the room higher while preventing future dew condensation in the room.

[Embodiment 3]
As the third embodiment, it is also possible to provide a program that causes the computer to function and execute the control as described in the first and second embodiments described above. Such a program is recorded as a program product by recording it on a non-temporary computer-readable recording medium such as a flexible disk attached to a computer, a CD-ROM (Compact Disk Read Only Memory), a ROM, a RAM, and a memory card. It can also be provided. Alternatively, the program can be provided by recording on a recording medium such as a hard disk built in the computer. The program can also be provided by downloading via the network.

The program may be a program module provided as a part of a computer operating system (OS), in which necessary modules are called in a predetermined array at a predetermined timing to execute processing. In that case, the program itself does not include the above module and the process is executed in cooperation with the OS. A program that does not include such a module may also be included in the program according to the present embodiment.

Further, the program according to the present embodiment may be provided by being incorporated into a part of another program. Even in that case, the program itself does not include the modules included in the other programs, and the processing is executed in cooperation with the other programs. A program incorporated in such another program may also be included in the program according to the present embodiment.

[Other embodiments]
(1) In the above-described embodiment, the processor 202 of the humidifying device 100 may be configured to receive the relative humidity (desired relative humidity) desired by the user via the operation panel 204. In this case, the processor 202 determines whether or not the desired relative humidity is equal to or greater than the target relative humidity calculated by the above process. When the desired relative humidity is less than the target relative humidity, the processor 202 executes humidification control so that the relative humidity in the room becomes the desired relative humidity.

On the other hand, when the desired relative humidity is equal to or higher than the target relative humidity, the processor 202 executes the humidification control so that the relative humidity in the room becomes the target relative humidity. In this case, the processor 202 may display on the display of the operation panel 204 that the desired relative humidity exceeds the target relative humidity, or may output audio via the speaker 206.

(2) The configuration exemplified as the above-described embodiment is an example of the configuration of the present invention, can be combined with another known technique, and a part thereof is not deviated from the gist of the present invention. It is also possible to change the configuration by omitting it.

Further, in the above-described embodiment, the treatments and configurations described in the modified examples and other embodiments may be combined as appropriate.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims, not the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Housing, 2a, 18 suction port, 2b rear panel, 3 humidification filter unit, 4 water tank, 7a deodorizing filter, 7b dust collection filter, 15,17 air outlet, 17a, 17b air direction plate, 23 front, 30 holding frame, 31 Water absorption filter, 32 ring gear, 41 water supply tank, 100, 100A humidifier, 202 processor, 203 memory, 204 operation panel, 206 speaker, 208 temperature sensor, 210 humidity sensor, 212 ion generator, 214 drive circuit, 216 fan, 218 communication interface, 302 information input unit, 304 history information storage unit, 306 measurement unit, 308 relationship calculation unit, 310 prediction unit, 312 target humidity calculation unit, 314 humidification control unit, 316 ventilation water vapor amount calculation unit, 318 correction unit, 500 straight lines, 600 wireless routers, 700 networks, 800 buildings, 900 servers, 1000 information processing systems.

Claims (4)

It is a humidifying device that can humidify the room.
A measuring unit that measures the indoor air temperature and the relative humidity in the room,
An input unit that accepts the input of the expected minimum temperature outdoors,
The future minimum temperature in the room is predicted based on the correlation between the past minimum temperature in the room, the temperature outside the room when the room reaches the minimum temperature, and the expected minimum temperature outside the room. Prediction department and
A calculation unit that calculates the ratio of the predicted saturated water vapor amount at the minimum temperature in the room to the saturated water vapor amount at the current temperature in the room as the target relative humidity.
A humidification control unit that executes humidification control so that the relative humidity in the room is less than the target relative humidity .
A correction unit for correcting the target relative humidity based on the amount of ventilation water vapor lost due to ventilation in the room is provided.
The correction unit calculates the corrected water vapor amount by adding the ventilation water vapor amount to the predicted saturated water vapor amount at the lowest temperature in the room, and the corrected water vapor amount with respect to the saturated water vapor amount at the current temperature in the room. Correct the target relative humidity so that it is a proportion of the amount,
When the target relative humidity is corrected by the correction unit, the humidification control unit executes a humidification control so that the relative humidity in the room becomes less than the corrected target relative humidity . The input unit accepts the input of the expected minimum temperature outside the room within a predetermined time from the present.
The humidifying device according to claim 1, wherein the prediction unit predicts the minimum temperature inside the room within a predetermined time from the present based on the correlation and the expected minimum temperature outside the room within a predetermined time from the present. .. The humidifying device according to claim 1 or 2 , wherein the input unit receives the expected minimum air temperature outside the room from an external server. It is a control method of a humidifier configured to be able to humidify the room.
A step of measuring the air temperature in the room and the relative humidity in the room,
Steps to accept the input of the expected minimum temperature outdoors,
The future minimum temperature of the room is predicted based on the correlation between the past minimum temperature of the room, the temperature of the outside when the room reaches the minimum temperature, and the expected minimum temperature of the outside. Steps to do and
A step of calculating the ratio of the predicted saturated water vapor amount at the minimum temperature in the room to the saturated water vapor amount at the current temperature in the room as a target relative humidity.
A step of executing humidification control so that the relative humidity in the room is less than the target relative humidity ,
Including the step of correcting the target relative humidity based on the amount of ventilation water vapor lost by ventilation in the room.
The correction step calculates the corrected water vapor amount by adding the ventilation water vapor amount to the predicted saturated water vapor amount at the minimum temperature in the room, and corrects the saturated water vapor amount at the current temperature in the room. Including correcting the target relative humidity to be a percentage of the amount of water vapor
The control method further includes a step of executing humidification control so that when the target relative humidity is corrected, the relative humidity in the room becomes less than the corrected target relative humidity .