WO2019065680A1

WO2019065680A1 - Ventilation device

Info

Publication number: WO2019065680A1
Application number: PCT/JP2018/035572
Authority: WO
Inventors: 弘貴松浪; 誠上羽
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2017-09-28
Filing date: 2018-09-26
Publication date: 2019-04-04
Also published as: TWI782087B; JPWO2019065680A1; TW201920893A; CN111133143B; CN111133143A

Abstract

Provided is a ventilation device (1), comprising a main body (2), a ventilation part (3), a dehumidifier part (4), a degree of moisture sensing part (9), and a control part (5). An intake port (10) and an exhaust port (11) are disposed on the main body. The ventilation part vents air from the intake port to the exhaust port. The dehumidifier part senses the degree of moisture of a subject of interest. The control part controls the venting from the exhaust port. The degree of moisture sensing part comprises a light emission part (7) and a photoreceptor part (8). The light emission part emits, toward the subject of interest, a sensing light including a wavelength absorbed by water, and a reference light including a wavelength less prone to be absorbed by water than the wavelength of the sensing light. The photoreceptor part receives the sensing light and the reference light, which have been reflected by the subject of interest. The control part comprises a degree of moisture computation part for comparing the intensities of the sensing light and the reference light received by the photoreceptor part and computing the degree of moisture. The control part controls the ventilation on the basis of the degree of moisture computed by the degree of moisture computation unit.

Description

Air blower

The present invention relates to an air blower mainly used to dry laundry in a bathroom or to dry laundry in a room of a general household.

In recent years, with changes in lifestyles, there has been an increasing demand for drying laundry indoors at any time. Therefore, it has become widespread to use the indoor and non-residential portions as a place for drying laundry by using a blower.

As described in

Patent Documents

1 and 2, an air blower has already been devised which determines the dry state of a material to be dried such as clothing by various methods. As a case where it is determined that clothes to be dried is in a dry state, for example, when indoor air reaches a preset temperature, when it reaches a predetermined relative humidity selected by the user, before and after intermittent operation There are cases where the relative humidity change amount is detected and the amount of change reaches a predetermined change amount or less. Furthermore, when the relative humidity change amount is detected during intermittent operation and after the operation and the amount reaches a predetermined change amount or less, it is also determined that the clothes to be dried are dry.

Moreover, the air blower of patent document 3 detects the infrared rays discharge | released from clothes and a to-be-dried thing, and detects the temperature state of a to-be-dried thing, such as clothes, from the absolute amount of the infrared rays of a to-be-dried. The blower determines that the material to be dried is dry if the temperature of the material to be dried is higher than the room temperature for a certain period of time, for example, 30 minutes or more, and ends the air blowing operation.

Moreover, the air blower of patent document 4 is equipped with the flap and infrared sensor which adjust the wind direction of the left-right direction. The blower determines which of the three detection ranges of the front right, front center and front left of the blower is present from the temperature distribution by the infrared sensor. Then, the movable range of the flap is controlled so that the air is concentrated and blown to the determined detection range.

Japanese Patent Application Laid-Open No. 10-99597 JP-A-4-240495 JP 2007-240100 A JP, 2010-112604, A

By the way, changes in the environment such as climate and weather, the size of the space to be dried, and the material of the room to be dried greatly influence the determination of the drying state of the object to be dried such as clothing. Therefore, in the automatic drying control method in the conventional air blower, when the drying state of the object is determined by the predetermined value of the relative humidity or the displacement amount of the absolute humidity set in advance, the drying state can not be accurately detected. is there.

In addition, intermittent operation is repeated even after determining the dry condition of the object to be dried, such as clothing, and it is conceivable to provide a plurality of dry condition determination criteria according to the environment, but due to various environmental changes such as weather or climate There is a problem that the dry state can not be determined.

In the method using an infrared sensor, the object to be dried is determined by detecting the temperature distribution in the room. Therefore, if the temperature unevenness of the surrounding environment such as the cold window of the winter and the vicinity of the air outlet where the heater becomes high temperature or the temperature unevenness of the object to be dried by the high temperature wind blown from the air blower occurs I can not judge. Therefore, there is a problem that the determination accuracy of drying is poor, such as blowing air to the non-dried matter and the undried matter to be in a dry state, resulting in undried matter.

The present invention has been made in view of the above-described points, and flexibly copes with environmental changes such as climate and weather, and can accurately determine drying without being affected by the ambient temperature and the blowing of the blower. An object of the present invention is to provide a blower capable of enhancing the drying efficiency by reducing the excessive operation after drying of the material to be dried.

A blower according to one aspect of the present invention includes a main body, a blower, a dehumidifying part, a water content detector, and a controller. The main body is provided with an inlet and an outlet. The blower blows air from the suction port to the blowout port. The dehumidifying part dehumidifies the air sucked from the suction port. The water content detection unit detects the water content of the object. The control unit controls air flow from the air outlet. The moisture content detection unit includes a light emitting unit and a light receiving unit. The light emitting unit emits detection light including a wavelength that is absorbed by water toward the object and reference light that includes a wavelength that is less easily absorbed by water than the detection light. The light receiving unit receives the detection light and the reference light reflected by the object. The control unit includes a water content calculation unit that calculates the water content by comparing the intensities of the detection light and the reference light received by the light reception unit, and the control unit sends air based on the water content by the water content calculation unit. Control.

The blower according to the present invention irradiates light toward an object in a target range, and calculates the amount of water contained in the object by comparing the intensities of the detection light and the reference light reflected by the object. . Thereby, the water content of the object in the target range is accurately identified. Therefore, the drying state of the object can be accurately determined, and the object can be optimally dried.

FIG. 1 is a perspective view showing a schematic configuration of a dehumidifier according to Embodiment 1 of the present invention. FIG. 2 is a side view showing a schematic configuration of the dehumidifier. FIG. 3 is a schematic view showing the configuration of a light emitting unit and a light receiving unit of the same dehumidifier and an object. FIG. 4 is a block diagram showing a control configuration of the dehumidifier. FIG. 5 is a diagram showing an absorption spectrum of water and water vapor. FIG. 6 is a schematic view showing a detection range of the dehumidifier. FIG. 7 is a schematic view showing scanning directions of a light emitting unit and a light receiving unit of the dehumidifier. FIG. 8 is a flowchart of water content calculation of the same dehumidifier. FIG. 9 is a view showing a table of water content distribution of the dehumidifier. FIG. 10 is a block diagram showing a drying judgment unit of the dehumidifier. FIG. 11 is a perspective view showing a schematic configuration of a fan according to the first embodiment. FIG. 12 is a perspective view showing a schematic configuration of the bathroom dryer according to the first embodiment. FIG. 13 is a block diagram showing the drying judgment unit of the dehumidifier according to the second embodiment. FIG. 14 is a side view showing a schematic configuration of the dehumidifier according to the third embodiment. FIG. 15 is a block diagram showing a control configuration of the dehumidifier according to the third embodiment. FIG. 16 is a block diagram showing the operation of the air flow control unit of the dehumidifier according to the third embodiment.

Hereinafter, a blower according to an embodiment of the present invention will be described in detail with reference to the drawings. Each of the embodiments described below shows a preferable specific example of the present invention. Therefore, numerical values, shapes, materials, components, arrangements of components, connection configurations and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the components in the following embodiments, components that are not described in the independent claims indicating the highest concept of the present invention are described as optional components.

Further, each drawing is a schematic view, and is not necessarily illustrated exactly. Therefore, for example, the scale and the like do not necessarily match in each figure. Further, in each of the drawings, substantially the same configuration is given the same reference numeral, and overlapping description will be omitted or simplified.

Embodiment 1
(Dehumidifier)
The dehumidifier 1 will be described as an example of a blower. FIG. 1 is a perspective view showing a schematic configuration of the dehumidifier 1. FIG. 2 is a side view showing a schematic configuration of the dehumidifier 1. As shown in FIG.

The dehumidifier 1 includes a main body 2, a blower 3, a dehumidifier 4, a water content detector 9, and a controller 5.

The main body 2 is provided with a suction port 10 for sucking air outside the main body 2 into the main body 2, and a blowout port 11 for blowing air sucked from the suction port 10 to the outside of the main body 2. As shown in FIG. 2, the suction port 10 is provided below the main body 2, and the blowout port 11 is provided above the main body 2. In addition, the blower outlet 11 and the suction inlet 10 are provided so that it may concern on the same side.

The blower unit 3 guides indoor air from the suction port 10 to the blowout port 11. The indoor air sucked into the main body 2 from the suction port 10 is dehumidified by the dehumidifying unit 4 described later. The dehumidified room air is blown from the blowout port 11 to a target object in the target range as the dehumidified air.

The dehumidifying unit 4 dehumidifies the air sucked from the suction port 10. The dehumidifying part 4 is only required to be capable of dehumidifying room air, and is, for example, desiccant dehumidifying using a dehumidifying material such as silica gel or a heat pump of vapor compression type. The indoor air may be dedusted as well as dehumidified.

The water content detection unit 9 has a light emitting unit 7 and a light receiving unit 8, and detects the water content of the object 100. The light emitting unit 7 emits light toward the object 100. The light receiving unit 8 receives the light reflected by the object 100.

The control unit 5 controls the air blowing from the air outlet 11. The control unit 5 includes a light source control unit 51 (see FIG. 4) and a moisture content calculation unit 56 (see FIG. 4). The light source control unit 51 controls the light emitted from the light emitting unit 7. The water content calculation unit 56 detects the light received by the light receiving unit 8 and calculates the water content. In addition, the control unit 5 is composed of at least one microcontroller, and is a non-volatile memory in which an overall operation program of the dehumidifier 1 is stored, and a volatile memory which is a temporary storage area for executing the program. , An input / output port, and a processor for executing a program.

Specifically, the control unit 5 determines the dry state of the object based on the water content calculated by the water content calculation unit 56, and controls at least one of the blower unit 3 and the dehumidifying unit 4. The water content calculation unit 56 calculates the water content of the object 100 by comparing the intensities of two lights of different wavelengths received by the light receiving unit 8. Details will be described later. Thus, the control unit 5 performs appropriate drying judgment and drying control in accordance with the water content of the object 100.

Next, an outline of the configuration of the light emitting unit 7, the light receiving unit 8, and the control unit 5 according to the first embodiment will be described.

FIG. 3 is a schematic view showing the configuration of the light emitting unit 7 and the light receiving unit 8 and the object 100 according to the first embodiment. FIG. 4 is a block diagram showing a control configuration of the dehumidifier 1 according to the first embodiment.

In the present embodiment, as shown in FIG. 3, the light emitting unit 7 irradiates light toward the target 100 existing at a space. The light emitted from the light emitting unit 7 is reflected by the object 100. The reflected light RA 1 which is the reflected light is detected by the light receiving unit 8. Then, based on the reflected light RA1 detected by the light receiving unit 8, the water content calculation unit 56 shown in FIG. 4 calculates the water content included in the object 100. The amount of water contained in the object 100 refers to the water accumulated on the object 100 and the water having permeated to the surface portion of the object 100.

Each component will be described in detail below.

(Light emitting unit)
The light emitting unit 7 includes a detection light including a first wavelength band which is a light of a wavelength absorbed by water, and a reference light including a second wavelength band which is a light of a wavelength whose absorption by water is smaller than the first wavelength band. Toward the object 100. Specifically, the light emitting unit 7 includes a light projecting lens 21 and a light source 22.

The light projection lens 21 is a condensing lens that condenses the light emitted from the light source 22 on the object 100. Although the light projection lens 21 is a resin-made convex lens, it is not restricted to this.

The light source 22 is a light emitting diode (LED) light source that includes a first wavelength band forming detection light and a second wavelength band forming reference light, and emits continuous light having a peak wavelength on the second wavelength band side. Specifically, the light source 22 is an LED light source made of a compound semiconductor.

FIG. 5 is a diagram showing an absorption spectrum of water and water vapor. As shown in FIG. 5, the moisture has absorption peaks at wavelengths of about 1450 nm and about 1940 nm. Water vapor has an absorption peak at a wavelength slightly lower than the absorption peak of water, specifically at a wavelength of about 1350 nm to about 1400 nm and about 1800 nm to about 1900 nm.

For this reason, a wavelength band where the light absorbance of water is high is selected as the first wavelength band that forms detection light, and a wavelength band where the absorbance of water is smaller than the first wavelength band is selected as the second wavelength band that makes reference light. select.

And as an example, the average wavelength of the second wavelength band is made longer than the average wavelength of the first wavelength band. Further, with respect to the central wavelength defined by the central value of the wavelength which is the half value of the maximum transmittance of the optical band pass filter, for example, the central wavelength of the first wavelength band is 1450 nm, and the central wavelength of the second wavelength band is 1700 nm Do. Since the light source 22 emits light continuously including the first wavelength band and the second wavelength band, the object 100 receives the detection light including the first wavelength band that is largely absorbed by water, and the absorption by water. Reference light including a second wavelength band smaller than the first wavelength band is emitted.

(Light receiving section)
As shown in FIG. 3, the light receiving unit 8 receives the reflected light RA <b> 1 emitted from the light emitting unit 7 and reflected by the object 100. That is, the light receiving unit 8 receives the detection light and the reference light which are emitted from the light emitting unit 7 and reflected by the object 100.

The light receiving unit 8 includes a light receiving lens 71, a half mirror 34, a first light receiving element 73, a second light receiving element 43, a first band pass filter 72, and a second band pass filter 42. The reflected light RA1 is condensed by the light receiving lens 71, and is divided by the half mirror 34 into light passing through the first optical path LR01 and light passing through the second optical path LR02.

The light receiving lens 71 is a condensing lens for condensing the reflected light RA <b> 1 reflected by the object 100 on the first light receiving element 73 and the second light receiving element 43. The light receiving lens 71 is fixed to the light receiving unit 8 such that the focal point is located on the light receiving surface of the first light receiving element 73, for example. The light receiving lens 71 is, for example, a resin-made convex lens, but is not limited to this.

The half mirror 34 is disposed, for example, between the light receiving lens 71 and the first light receiving element 73, transmits half of the light collected by the light receiving lens 71, and reflects the remaining light. A first band pass filter 72 and a first light receiving element 73 are provided at the end of the first optical path LR01 which is an optical path of light transmitted through the half mirror 34.

The first band pass filter 72 is a band pass filter that extracts light of a first wavelength band, which is detection light, from the reflected light RA1. Specifically, the first band pass filter 72 is disposed between the half mirror 34 and the first light receiving element 73, and the reflected light RA1 transmitted through the half mirror 34 and incident on the first light receiving element 73. Provided on the light path of The first band pass filter 72 transmits light in the first wavelength band and reflects or absorbs light in other wavelength bands.

The first light receiving element 73 is a light receiving element that receives the light of the first wavelength band that is reflected by the object 100, passes through the half mirror 34, and passes through the first band pass filter 72, and converts it into a first electrical signal. is there. The first light receiving element 73 photoelectrically converts the received light of the first wavelength band to generate a first electric signal according to the amount of light received (that is, the intensity). The generated first electrical signal is output to the control unit 5. The first light receiving element 73 is, for example, a photodiode, but is not limited thereto. For example, the first light receiving element 73 may be a phototransistor or an image sensor.

The second band pass filter 42 is a band pass filter that extracts light of a second wavelength band, which is reference light, from the light reflected by the half mirror 34. Specifically, the second band pass filter 42 is disposed between the half mirror 34 and the second light receiving element 43, and the light of the light reflected by the half mirror 34 and incident on the second light receiving element 43 It is provided on the street. Then, the second band pass filter 42 transmits the light of the second wavelength band, and reflects or absorbs the light of the other wavelength bands.

The second light receiving element 43 is a light receiving element that receives the light of the second wavelength band reflected by the object 100 and transmitted through the second band pass filter 42 and converts the light into a second electric signal. The second light receiving element 43 photoelectrically converts the received light of the second wavelength band to generate a second electric signal according to the amount (that is, the intensity) of the received light. The generated second electrical signal is output to the control unit 5. The second light receiving element 43 is a light receiving element having the same shape as the first light receiving element 73. That is, when the first light receiving element 73 is a photodiode, the second light receiving element 43 is also a photodiode.

(Control unit)
The control unit 5 includes a light source control unit 51, a first amplification unit 52, a second amplification unit 53, a first signal processing unit 54, a second signal processing unit 55, a water content calculation unit 56, and a drying judgment. A unit 57 is provided.

The control unit 5 may be housed in the main body 2 or may be attached to the outer side surface of the main body 2. Alternatively, the control unit 5 is divided into a plurality, has a communication function such as wireless communication, and receives the first electric signal from the first light receiving element 73 and the second electric signal from the second light receiving element 43. It is also good.

The light source control unit 51 controls lighting of the light source 22 of the light emitting unit 7. The light source control unit 51 is configured of a drive circuit and a microcontroller. The light source control unit 51 includes a non-volatile memory storing a control program of the light source 22, a volatile memory which is a temporary storage area for executing the program, an input / output port, a processor for executing the program, and the like. Have. The light source control unit 51 controls the light source 22 so that lighting and extinguishing of the light source 22 are repeated in a predetermined light emitting cycle. Specifically, the light source control unit 51 outputs a pulse signal of a predetermined frequency (for example, 1 kHz) to the light source 22 to turn on and off the light source 22 at a predetermined light emission cycle.

The first amplification unit 52 amplifies the first electric signal output from the first light receiving element 73 and outputs the amplified first electric signal to the first signal processing unit 54. Specifically, the first amplification unit 52 is an operational amplifier that amplifies the first electrical signal.

The first signal processing unit 54 is configured by a microcontroller. The first signal processing unit 54 executes a program, a nonvolatile memory storing a processing program for the first electric signal, a volatile memory which is a temporary storage area for executing the program, an input / output port, and the like Processor etc. The first signal processing unit 54 performs passband limitation on the first electric signal and corrects the phase delay due to the passband limitation, and then performs multiplication processing with the light emission cycle of the light source 22. The process for the first electrical signal is a so-called lock-in amplifier process. This suppresses noise based on disturbance light generated in the first electrical signal.

The second amplification unit 53 amplifies the second electric signal output from the second light receiving element 43 and outputs the amplified second electric signal to the second signal processing unit 55. Specifically, the second amplification unit 53 is an operational amplifier that amplifies the second electrical signal.

The second signal processing unit 55 is configured by a microcontroller. The second signal processing unit 55 executes a non-volatile memory storing a processing program for the second electric signal, a volatile memory which is a temporary storage area for executing the program, an input / output port, and the program Processor etc. The second signal processing unit 55 performs passband limitation on the second electric signal and corrects the phase delay due to the passband limitation, and then performs multiplication processing with the light emission cycle of the light source 22. The process for the second electrical signal is a so-called lock-in amplifier process. This suppresses noise based on disturbance light generated in the second electrical signal.

The water content calculation unit 56 detects the water contained in the object 100 based on the first electric signal output from the first light receiving element 73 and the second electric signal output from the second light receiving element 43. Specifically, the water content calculation unit 56 detects the water content included in the object 100 based on the ratio (signal ratio) of the voltage level of the first electrical signal to the voltage level of the second electrical signal. In the present embodiment, the moisture content calculation unit 56 determines the target object based on the first electrical signal processed by the first signal processing unit 54 and the second electrical signal processed by the second signal processing unit 55. The amount of water contained in 100 is detected. The water content calculation unit 56 outputs the detected water content to the drying determination unit 57. The specific water content detection process will be described later.

The water content calculation unit 56 is, for example, a microcontroller. The water content calculation unit 56 has a nonvolatile memory storing a signal processing program, a volatile memory which is a temporary storage area for executing the program, an input / output port, a processor for executing the program, and the like. .

The drying determining unit 57 determines the drying of the object 100 based on the water content calculated by the water content calculating unit 56.

The specific drying judgment will be described later.

(Water content detection process)
The detection process of the water content by the water content calculation unit 56 will be described. In the present embodiment, the water content calculation unit 56 detects the water content included in the object 100 by comparing the light energy Pd of the detection light included in the reflected light RA1 with the light energy Pr of the reference light. Do. The light energy Pd of the detection light corresponds to the intensity of the first electric signal output from the first light receiving element 73, and the light energy Pr of the reference light is a second electric signal output from the second light receiving element 43. Corresponds to the strength of

The light energy Pd is represented by the following (formula 1).

(Formula 1) Pd = Pd0 × Gd × Rd × Td × Aad × Ivd
Here, Pd0 is the light energy of the light of the first wavelength band forming the detection light among the light emitted by the light source 22. Gd is the coupling efficiency (concentration factor) of the light of the first wavelength band to the first light receiving element 73. Specifically, Gd is a ratio of a part of the light emitted from the light source 22 to a part of the component diffused and reflected by the object (the object 100) (ie, the detection light included in the reflected light) Equivalent to.

Rd is the reflectance of the detection light by the object 100. Td is the transmittance of the detection light by the first band pass filter 72. Ivd is the light receiving sensitivity to the detection light included in the reflected light RA1 in the first light receiving element 73.

Aad is an absorptivity of the detection light by the component (water) contained in the object 100, and is expressed by the following (Formula 2).

(Formula 2) Aad = 10- ^{αa × Ca × D}
Here, αa is a predetermined absorption coefficient, and specifically, the absorption coefficient of the detection light by the component (water). Ca is a volume concentration of a component (water) contained in the object 100. D is a contribution thickness that is twice the thickness of the component that contributes to the absorption of the detection light.

More specifically, in the case of the object 100 in which the water is uniformly dispersed, Ca is contained in the component of the object 100 when light is incident on the object 100 and reflected and emitted from the object 100. It corresponds to the concentration. Further, D corresponds to an optical path length until reflection and emission from the object 100. For example, Ca is the concentration of water contained in the liquid phase covering the object 100. Moreover, D is a contribution thickness converted as an average thickness of the liquid phase covering the object 100.

Therefore, αa × Ca × D corresponds to the amount of component (the amount of water) contained in the object 100. From the above, it can be seen that the light energy Pd corresponding to the intensity of the first electrical signal changes in accordance with the amount of water contained in the object 100. In addition, since the absorbance of moisture is extremely small compared to moisture, it can be ignored.

Similarly, the light energy Pr of the reference light incident on the second light receiving element 43 is expressed by the following (Expression 3).

(Expression 3) Pr = Pr0 × Gr × Rr × Tr × Ivr
In the present embodiment, the reference light can be considered not to be substantially absorbed by the components contained in the object 100, so that it is equivalent to the absorptance by water Aad as understood in comparison with (Equation 1) Term is not included in (Expression 3).

In Equation (3), Pr0 is light energy of light of the second wavelength band forming the reference light among the light emitted by the light source 22. Gr is a coupling efficiency (condensing ratio) to the second light receiving element 43 of the reference light emitted from the light source 22. Specifically, Gr corresponds to the proportion of the part of the reference light that is to be a part of the component that is diffusely reflected by the object 100 (that is, the reference light included in the reflected light). Rr is the reflectance of the reference light by the object. Tr is the transmittance of the reference light by the second band pass filter 42. Ivr is the light receiving sensitivity to the reflected light of the second light receiving element 43.

In the present embodiment, since the light emitted from the light source 22, that is, the detection light and the reference light are coaxially irradiated with the same spot size, the coupling efficiency Gd of the detection light and the coupling efficiency Gr of the reference light are It becomes almost equal. Further, since the detection light and the reference light have relatively close peak wavelengths, the reflectance Rd of the detection light and the reflectance Rr of the reference light are substantially equal.

Therefore, the following (Expression 4) is derived by taking the ratio (signal ratio) between (Expression 1) and (Expression 3).

(Equation 4) Pd / Pr = Z × Aad
Here, Z is a constant term and is represented by (Equation 5).

(Eq. 5) Z = (Pd0 / Pr0) × (Td / Tr) × (Ivd / Ivr)
The light energy Pd0 and Pr0 are each predetermined as an initial output of the light source 22. Further, the transmittance Td and the transmittance Tr are predetermined by the transmission characteristics of the first band pass filter 72 and the second band pass filter 42, respectively. The light receiving sensitivity Ivd and the light receiving sensitivity Ivr are predetermined by the light receiving characteristics of the first light receiving element 73 and the second light receiving element 43, respectively. Therefore, Z shown in (Expression 5) can be regarded as a constant.

The water content calculation unit 56 calculates the light energy Pd of the detection light based on the first electrical signal, and calculates the light energy Pr of the reference light based on the second electrical signal. Specifically, the signal level (voltage level) of the first electrical signal corresponds to the light energy Pd, and the signal level (voltage level) of the second electrical signal corresponds to the light energy Pr.

Therefore, the water content calculation unit 56 can calculate the absorptance Aad of the water contained in the target based on (Expression 4). Thus, the water content calculation unit 56 can calculate the water content based on (Expression 2).

Although moisture (water vapor) is also present in the space, it is also assumed that the detection light and the reference light are absorbed by the water vapor. The control unit 5 may be provided with a correction unit that corrects the first electric signal and the second electric signal so as to cancel the absorption by the water vapor.

(Detection range of water content)
FIG. 6 is a plan view schematically showing the detection range of the dehumidifier according to the first embodiment. It is preferable that the detection range A be set equal to or wider than the range in which the air dehumidified by the dehumidifier 1 is blown. The detection range A is equal to or wider than the light receiving range of the light receiving unit 8. As shown in FIG. 6, the unit area R is an area where light detection is individually performed by the light receiving unit 8. The unit area R may have the same size as the detection range A, or may have a size smaller than the detection range A. For example, the unit area R has a size obtained by dividing the detection range A into six in the vertical direction and into six in the horizontal direction. As a method of detecting each of S11 to S66 of the unit region R, for example, an image sensor may be adopted as the first light receiving element 73 and the second light receiving element 43. FIG. 7 is a schematic view showing scanning directions of the light emitting unit and the light receiving unit of the dehumidifier according to the first embodiment. As another method, as shown in FIG. 7, a method of irradiating light while scanning the irradiation area of the light emitting unit 7 and scanning the light receiving area of the light receiving unit 8 simultaneously and receiving the reflected light RA1 of each area It is good. As a scanning method, for example, there is a method of rotatably arranging a pedestal on which the light emitting unit 7 and the light receiving unit 8 are fixed to two orthogonal axes using two stepping motors (not shown). One stepping motor is disposed at an angle at which the irradiation area can be scanned in the main scanning direction of FIG. 7, and the other stepping motor is disposed at an angle at which the irradiation area can be scanned in the sub-scanning direction of FIG. In FIG. 6 and FIG. 7, the case where six places are detected at equal intervals per row and six places are detected at equal intervals per column is illustrated.

Next, a scanning method in this case will be described using the flowchart of FIG. FIG. 8 is a diagram showing a flowchart of water content calculation according to the first embodiment. Here, positions in n rows and 6 columns of the unit region R are defined as Sn 6 (n = 1 to 6). That is, S11 is a position in one row and one column of the unit region R. First, the irradiation area of the light emitting unit 7 and the light receiving area of the light receiving unit 8 are moved to S11 of FIG. 7 (n = 1). Next, the designated position of each area (the irradiation area and the light receiving area) is set to Sn6 (Step 1). The stepping motor is driven to move the pedestal in parallel with the main scanning direction of FIG. 7, and the irradiation area and the light receiving area are positioned at Sn6 (Step 2). At the same time, it is determined whether the irradiation area and the light receiving area are located at the center of the unit area R. The determination as to whether or not the unit region R is located at the center is calculated, for example, from the number of drive steps of the stepping motor. If the irradiation area and the light reception area are not located at the center of the unit area R, the process returns to Step 2 to continue driving the stepping motor. When the irradiation area and the light reception area are located at the center of the unit area R, the light reception intensity is acquired, the ratio of the intensities, that is, the water content is calculated and stored in the table T. Thereafter, it is determined whether or not the unit area R currently positioned is Sn6 which is a designated position (Step 3). If the unit area R currently positioned is not Sn6, the process returns to Step 2 to continue driving the stepping motor. Here, if the unit region R currently positioned is Sn6, the driving of the stepping motor is stopped (Step 4). Thereafter, 1 is added to n to move the irradiation area and the light receiving area toward Sn6 in parallel to the sub-scanning direction of FIG.

Next, the designated position is set to Sn1 (Step 5). Then, the irradiation area and the light reception area are moved in the direction opposite to Step 2 in parallel with the main scanning direction of FIG. 7 and the stepping motor is driven to be positioned at the designated position Sn1 (Step 6). At the same time, it is determined whether the irradiation area and the light receiving area are located at the center of the unit area R. The determination as to whether or not the unit region R is located at the center is calculated, for example, from the number of drive steps of the stepping motor. If the irradiation area and the light reception area are not located at the center of the unit area R, the process returns to Step 6 to continue driving the stepping motor. When the irradiation area and the light reception area are located at the center of the unit area R, the light reception intensity is acquired, the ratio of the intensities, that is, the water content is calculated and stored in the table T.

Next, it is determined whether or not the unit area R currently located is Sn1 which is a designated position (Step 7). If the unit area R currently positioned is not Sn1, the process returns to Step 6 to continue driving the stepping motor. Here, if the unit area R currently positioned is Sn1, the driving of the stepping motor is stopped (Step 8).

If n is not 6 here, 1 is added to n and the irradiation area and the light receiving area are moved parallel to the sub-scanning direction of FIG. 7 toward the designated position Sn1 (Step 9). Thereafter, the process returns to Step 1 to repeat the operation. If n is 6, the detection operation is ended.

FIG. 9 is a view showing a table of water content distribution of the dehumidifier according to the first embodiment. When the detection operation is completed, the calculation result of the water content for each unit area R is temporarily recorded in a table T as shown in FIG. 9 and the drying is judged based on the information of the table T. The information in the table T may be determined individually for each unit region R, or may be averaged to be processed into one or a small number of pieces of information.

(Drying judgment)
Next, the operation of the drying judgment unit 57 will be described using the block diagram of FIG. FIG. 10 is a block diagram showing the drying judgment unit of the dehumidifier according to the first embodiment.

At the time of clothes drying, the drying determination unit 57 of the dehumidifier 1 determines the drying of the object 100 based on the table T of the water content input from the water content calculation unit 56. As a method of determining the drying, for example, the drying determining unit 57 has a water content comparing unit 62 that periodically compares the water content of the object 100 input from the water content calculating unit 56 with the water content threshold 61. The water content comparison unit 62 compares the information in the table T with the water content threshold value 61 to determine whether the object 100 is dry. The drying determination unit 57 may determine the drying for each unit region R by comparing the information for each unit region R of the table T with the moisture content threshold value 61. In addition, the drying determination unit 57 may average the information in the table T, process it into one or a small number of pieces of information, and compare it with the moisture amount threshold 61. For example, when the information of the unit region R is smaller than the water content threshold 61, the unit region R is determined to be dry.

As described above, the dehumidifier 1 according to the present embodiment includes the main body 2, the air blowing unit 3, the dehumidifying unit 4, the water content detection unit 9, and the control unit 5. The main body 2 is provided with an inlet and an outlet. The blower 3 blows air from the suction port 10 to the blowout port 11. The dehumidifying unit 4 dehumidifies the air sucked from the suction port 10. The water content detection unit 9 detects the water content of the object 100. The control unit 5 controls the air blowing from the air outlet 11. The moisture content detection unit 9 includes a light emitting unit 7 and a light receiving unit 8. The light emitting unit 7 includes a detection light including a first wavelength band that is a light including a wavelength absorbed by water, and a reference light including a second wavelength band that is a light including a wavelength that is less absorbed by water than the detection light. Light is emitted toward the object 100. The light receiving unit 8 receives the detection light and the reference light reflected by the object 100. The control unit 5 includes a water content calculation unit that calculates the water content by comparing the intensity of the detection light received by the light receiving unit 8 with the intensity of the reference light. And control part 5 controls ventilation based on a moisture content.

According to this configuration, environmental changes such as climate and weather, temperature unevenness of the surrounding environment such as in the vicinity of a cold window of the winter and a high temperature air outlet of a heating device, and a high temperature wind blown from the dehumidifier 1 The moisture content of the object 100 is detected without being affected by the temperature unevenness of the dried product. Since the water content of the material to be dried is accurately determined, the control unit 5 can control the air flow more accurately.

Moreover, the control part 5 may be equipped with the drying judgment part which judges drying of the target object 100 based on a moisture content. According to this configuration, it is possible to reduce and eliminate the excess drying operation and the insufficient drying of the material to be dried, and to make a highly accurate drying judgment.

The drying judgment unit 57 further includes a water content comparison unit 62 that compares the water content calculated by the water content calculation unit 56 with the water content threshold value 61 held inside. The water content comparison unit 62 determines that the water content data T is dry when the data T of the water content is smaller than the water content threshold value 61 held therein.

According to this configuration, the drying determination of the object 100 can be accurately performed regardless of the surrounding environment, the material of the object 100, and the type of clothing.

(Fan)
FIG. 11 is a perspective view showing a schematic configuration of the fan according to the first embodiment. FIG. 11 discloses a fan 81 provided with an axial fan 84 in which a plurality of blades 82 are fixed to the rotation shaft of a motor 83. The blades 82 attached to the axial fan 84 are covered by the front guard 86 and the rear guard 87, and the air can be blown by the rotation of the motor 83. The axial flow fan 84 is fixed to one end of the main body shaft 85, and the other end of the main body shaft 85 is fixed to the base 88. The axial fan 84 is installed with a structure that is movable in the left and right and up and down directions with respect to the main body shaft 85.

As shown in FIG. 11, the fan 81 includes a moisture amount detection unit 9 for detecting the moisture amount of the object 100 on the base 88. When the fan 81 blows and dries the object 100 dried in the room, the water content detection unit 9 accurately detects the water content of the clothes, and controls the wind direction, the air volume, the air blowing time, and the like of the fan 81. can do. For example, when it is determined that the amount of moisture in the dried clothes is high, control is performed to increase the air flow. In addition, it is also possible to control the wind direction of the axial fan 84 so as to be able to intensively blow air to clothes that are particularly dry, among clothes that are dried.

As described above, when the fan 81 is used to dry clothes or the like, the drying state can be accurately determined, and the operation of the fan 81 can be controlled.

(Bathroom Dryer)
FIG. 12 is a perspective view showing a schematic configuration of the bathroom dryer according to the first embodiment. FIG. 12 shows a bathroom dryer 91 used for drying clothes and drying in the bathroom. As shown in FIG. 12, the bathroom drier 91 includes a main body case 92, a heating unit 95, and a blower 93. The main body case 92 constitutes an exterior of the bathroom dryer 91. Further, the main body case 92 is provided with a suction port 10 for taking in the air of the bathroom into the bath dryer 91 and a blowout port 11 for blowing out the air sucked from the suction port 10. The heating unit 95 is provided in the air flow path connecting the suction port 10 and the blowout port 11, and heats the air sucked from the suction port 10. In addition, the blower 93 is provided in the blower path, and circulates the air from the suction port 10 to the blowout port 11.

The bathroom dryer 91 further includes a wind direction control unit 96, a ventilation unit 97, and an operation control unit 98. The wind direction control unit 96 changes the wind direction of the wind blown from the air outlet. The ventilation unit 97 ventilates the bathroom. The operation control unit 98 controls the heating amount, the air blowing amount, the wind direction, and the like of the bathroom dryer 91. The bathroom drier 91 has a drying mode for controlling the amount of heat, the amount of air, the direction of air, etc., for the purpose of drying the clothes or the bathroom.

In the drying mode such as clothes drying and bathroom drying, since the material, position, size, and the like of the object 100 to be dried are different, the bathroom dryer 91 needs to appropriately detect the drying state and control the operation. Therefore, the bathroom drier 91 includes a water content detection unit 9 that detects the water content of the object 100 to be dried. As shown in FIG. 12, when the bathroom dryer 91 blows and dries the clothes dried in the bathroom, the moisture amount detection unit 9 accurately detects the moisture amount of the clothes, and Can control the operation. For example, when it is determined that the amount of moisture in the dried clothes is high, the bathroom dryer 91 performs control to increase the air flow. In addition, it is also possible to control the wind direction control unit 96 of the bathroom dryer 91 so as to be able to intensively blow air to clothes that are particularly dry, among clothes that are dried.

Moreover, when using the bathroom dryer 91 for drying of a bathroom, the moisture content detection part 9 detects the moisture content of the especially wet location of the bottom part 101 grade | etc., Of a bathtub. The bathroom drier 91 can blow air with a necessary amount of heating, a blowing amount, and a blowing time to the bottom portion 101 of the bath according to the detected water amount.

As described above, when the bathroom dryer 91 is used to dry the clothes and the bathroom, the drying state can be accurately determined to control the operation of the bathroom dryer 91.

[Effect, etc.]
The control unit 5 can control the operation of the blowing unit 3 and the dehumidifying unit 4 and can control the blowing amount of the blowing unit 3 and the dehumidifying amount of the dehumidifying unit 4 based on the comparison result of the drying judgment unit 57. .

According to this configuration, after the drying of the object 100 is accurately determined, any one or more of the air blowing amount or the dehumidifying amount of the dehumidifier 1 can be controlled. Drying operation can be prevented. Specifically, the air blowing of the air blowing unit 3 may be stopped when the drying judgment unit 57 judges that the air is dry. Thereby, overdrying of the object 100 can be prevented, and optimal drying can be performed.

In addition, when the drying judgment unit 57 judges that the air is dry, the air blowing may be stopped after reducing the air blowing amount of the air blowing unit 3 and blowing the air for a certain period of time. This can prevent moisture absorption due to ambient moisture after the object is dried, and can reliably dry the object 100.

Furthermore, when the drying judgment unit 57 judges that the drying is performed, the dehumidification of the dehumidifying unit 4 may be stopped. This is performed when the ambient humidity is adequate. Thereby, overdrying and excessive driving of the object 100 can be eliminated, and a comfortable humidity environment can be provided.

In addition, when the drying judgment unit 57 judges that the drying is to be performed, the dehumidifying unit 4 may be de-humidified after reducing the dehumidifying amount of the dehumidifying unit 4 and blowing air for a predetermined time. This is performed when the ambient humidity is higher than the proper humidity. As a result, it is possible to prevent moisture absorption due to the ambient moisture after the object 100 is dried, and the object 100 can be reliably dried.

Second Embodiment
The first embodiment exemplifies the case where the drying determination is performed based on the table T of the water content detection result.

The dehumidifier 110 which concerns on Embodiment 2 compares the time change rate of a water content, and a threshold value, and performs dryness determination of a target object.

FIG. 13 is a block diagram showing the drying judgment unit of the dehumidifier according to the second embodiment. The drying determination unit 157 further includes a moisture content change rate threshold 163, a moisture content change rate calculation unit 164, and a moisture content change rate comparison unit 165, as shown in FIG. The water content change rate calculation unit 164 stores the water content data calculated by the water content calculation unit 56 a plurality of times, and calculates the time change rate T ′. The water content change rate comparing unit 165 compares the time change rate T ′ of the water content calculated by the water content change rate calculating unit 164 with the water content change rate threshold value 163. The water content change rate comparing unit 165 determines that the object 100 is dry when the time change rate T ′ of the water content is smaller than the water content change rate threshold 163 held therein. The temporal change rate T ′ of the water content may be calculated for each unit region R, or may be averaged to be processed into one or a small number of pieces of information.

Generally, the moisture content is different between a material with high moisture retention made of materials such as cotton and hair and a material with high quick-drying properties such as polyester. In the dehumidifier 110 according to the present embodiment, the degree of dryness can be determined from the rate of change of the water content, and optimum drying judgment can be made.

When the table T of the water content is smaller than the water content threshold 61 by the water content comparing unit 62, the drying determining unit 157 first determines that the water is in the temporary drying state, and then the water content change rate comparing unit 165 When the time change rate T ′ of the water content is smaller than the water content change threshold 163, the final dry state may be determined.

The object 100 containing a large amount of water, such as a thick material, has a small rate of change in dryness at the initial stage of drying, and there is a concern that the object 100 is determined to be dry although it contains a large amount of water. According to this configuration, the thick object 100 containing a large amount of water such as a thick material can also be prevented from being erroneously judged to be dry by using the water content comparison unit 62, so drying with high accuracy is possible. You can make a decision.

Third Embodiment
Next, the dehumidifier 210 according to the third embodiment will be described. FIG. 14 is a configuration diagram showing a schematic configuration of the dehumidifier according to the third embodiment. FIG. 15 is a block diagram showing a control configuration of the dehumidifier according to the third embodiment.

The dehumidifier 210 according to the third embodiment further includes a louver 6, as shown in FIG. Further, the control unit 5 includes a blowing control unit 257 instead of the drying determination unit 57.

The louver 6 can change at least one air blowing condition such as the air blowing range or direction of the dehumidified air or the air removed from the air blowing from the air outlet 11.

The blower control unit 257 is provided in the control unit 5 and controls the blower 3, the dehumidifying unit 4, and the louver 6.

[Blower control unit]
Next, the operation of the air flow control unit 257 will be described with reference to FIG. FIG. 16 is a block diagram showing the operation of the air flow control unit of the dehumidifier according to the third embodiment.

During clothes drying, the air flow control unit 257 of the dehumidifier 210 selects one of the air flow unit 3 and the louver 6 based on the water content table T shown in FIG. 9 at each detection position input from the water content calculation unit 56. Control at least one condition. Specifically, air is blown at an angle of the louver 6 toward a place where the ratio of the intensity of the measurement light to the reference light is small in T11 to T66, that is, the amount of water is large. The blower control unit 257 may control the dehumidifying unit 4 based on the table T of the water content.

As shown in FIG. 16, the air flow control unit 257 includes a ratio threshold comparison unit 262 and a change rate threshold comparison unit 264.

The ratio threshold comparator 262 compares the ratio threshold 261 held therein with the ratio of the intensity input from the water content calculator 56, that is, the table T of the water content. When the intensity ratio becomes larger than the ratio threshold 261 held inside, that is, the water content becomes smaller than a predetermined threshold, the air flow control unit 257 reduces the air flow from the air blowing unit 3 or stops. Control the

In addition, the change rate threshold comparison unit 264 compares the change rate threshold 263 stored therein with the ratio of the strengths input from the water content calculation unit 56, that is, the time change rate T ′ of the water content. Thereby, it is difficult to dry the unit region R in which the temporal change rate of the intensity ratio is smaller than the change rate threshold 263 held internally, that is, the temporal change rate T ′ of the water content is smaller than the predetermined threshold. It can be judged. As a result, air blowing control is performed such as increasing the air blowing amount of the air blowing unit 3 or directing the angle of the louver 6 to a unit area where the time change rate T 'of water content is small.

[Effect, etc.]
As described above, according to the dehumidifier 210 according to the present embodiment, the angle of the louver 6 is controlled according to the ratio of the intensity of the detection light to the reference light reflected from the object 100, that is, the amount of water. Optimal blowing according to the water content distribution of the object is performed.

According to this configuration, the ratio of strength, that is, the amount of water, can be accurately detected regardless of the temperature unevenness of the object, and the air can be intensively delivered to the unit region R that requires drying. Drying can be performed.

Specifically, the angle of the louver 6 is controlled with respect to a unit area having a small intensity ratio in the object, that is, a large amount of water, and the dehumidified air is concentrated and blown to the unit area. Thus, evaporation of water is promoted in the unit area having a large amount of water. Although the air flow to a unit area having a large strength ratio, that is, a small amount of water in the object 100 is reduced, the unit area has a small amount of water, and drying is performed without promoting evaporation of water by air blowing. Go forward. Thus, efficient drying can be performed according to the distribution of water content.

Further, the control unit 5 can control the air blowing amount of the air blowing unit 3 based on the ratio of the strengths, that is, the distribution of the water content.

According to this configuration, efficient drying can be performed by optimally controlling the amount of air dehumidified in accordance with the water content of the object.

In addition, the air flow control unit 257 includes a ratio threshold value comparing unit 262 that compares the intensity ratio with a predetermined ratio threshold value 261, and can control the air flow rate of the air blowing unit 3 based on the comparison result.

According to this configuration, it is possible to accurately determine the drying of the object, so it is possible to prevent excessive air flow to the dried object.

In the said embodiment, the case where judgment of ventilation control was performed based on the table T of a moisture content detection result was illustrated. However, the water content may be detected a plurality of times, and the air flow control may be determined based on the time change rate T '.

According to this configuration, for example, in a unit area where the intensity ratio is small, that is, the amount of water is large, it is determined that drying is completed in a short time. Therefore, by controlling the angle of the louver 6 based thereon, efficient drying can be achieved.

In addition, when the unit area with a small time change rate T ′ has a large amount of water, it may contain a large amount of water inside, or it may be difficult for dry air to reach, and it takes time to dry. By intensively drying the angle of the louver 6 in the direction in which the time change rate T ′ is small, the drying time of the difficult-to-dry region can be shortened, and the drying efficiency can be improved.

The air flow control unit 257 can change the air flow rate of the air blowing unit 3 in addition to the louver 6.

According to this configuration, when the object 100 is difficult to dry, that is, when the temporal change in the intensity ratio is small, strong drying can be performed to improve the drying rate, and efficient drying can be performed.

Further, the air flow control unit 257 includes a change rate threshold comparison unit 264 that compares the temporal change rate of the intensity ratio with a predetermined change rate threshold 263, and can control the air flow rate of the air blow unit 3 based on the comparison result.

According to this configuration, when the rate of change of the intensity ratio is larger than the predetermined rate of change threshold, it is considered that the air is dried naturally even if the air flow to the object is small. It can save excess energy and make it dry efficiently.

In addition, the present invention can be realized by arbitrarily combining components and functions in each embodiment without departing from the scope of the present invention or embodiments obtained by applying various modifications that those skilled in the art may think to each embodiment. The form is also included in the present invention.

In addition, the present invention can be realized by arbitrarily combining the components and functions in each embodiment within the scope obtained by applying various modifications conceived by those skilled in the art to each embodiment and the scope of the present invention. The embodiments of the present invention are also included in the present invention.

As described above, since the infrared reflected light intensity detection according to the present invention can enhance the measurement accuracy of the drying progress of the material to be dried, it is useful for the determination of the material to be dried and the operation control of the blower. .

DESCRIPTION OF

SYMBOLS

1, 110, 210 Dehumidifier 2 main body 3 ventilation part 4 dehumidification part 5 control part 6 louver 7 light emission part 8 light reception part 9 water content detection part 10 suction port 11 blowout port 21 projection lens 22 light source 34 half mirror 42 second band Pass filter 43 Second light receiving element 51 Light source control unit 52 First amplification unit 53 Second amplification unit 54 First signal processing unit 55 Second signal processing unit 56 Water

content calculation unit

57, 157 Drying judgment unit 61 Water content threshold 62 Water Amount comparison part 163 Water content change rate threshold 164 Water content change rate calculation part 165 Water content change rate comparison part 71 Light receiving lens 72 First band pass filter 73 First light receiving element 81 Fan 82 Blade 83 Motor 84 Axial fan 85 Main shaft 86 front guard 87 rear guard 88 base 91 bathroom dryer 92 main case 93 blower 95 heated portion 96 air direction control unit 97 the ventilation unit 98 operation control unit 100 object

Claims

A main body provided with an inlet and an outlet;
A blower for blowing air from the suction port to the blowout port;
A dehumidifying part dehumidifying the air sucked from the suction port;
A moisture content detection unit that detects the moisture content of the object;
A control unit that controls the air flow from the air outlet;
The water content detection unit
A detection light including a wavelength that is absorbed by water toward the object, and a light emitting unit that emits a reference light that includes a wavelength that is less easily absorbed by water than the detection light;
The control unit includes a light receiving unit that receives the detection light reflected by the object and the reference light, and the control unit calculates the amount of water by comparing the intensity of the detection light received by the light receiving unit with the intensity of the reference light. A water content calculation unit to
The said control part controls the said ventilation based on the said moisture content, The air blower characterized by the above-mentioned.
The blower according to claim 1, wherein the blower is an axial fan that rotates a plurality of blades by a motor to blow the blades.
The heating apparatus further comprises a heating unit disposed in a ventilation path from the suction port to the blowout port,
The blower according to claim 1, wherein the blower is disposed in the ventilating path and ventilates from the suction port to the blowout port.
The air blower according to claim 1, wherein the control unit comprises a drying judgment unit which judges the drying of the object based on the water content.
The said drying judgment part has a water content comparison part which compares the said water content and a predetermined water content threshold value, and judges that it is dry, when the said water content is smaller than the said predetermined water content threshold value. Blowing device as described.
The drying determination unit includes a water content change rate calculation unit that calculates a change rate of the water content, and a water content change rate comparison unit that compares the change rate with a predetermined change rate threshold, and the water content The air blower according to claim 4, wherein the air blower is determined to be dry when the rate of change of is smaller than the predetermined rate of change threshold.
The drying judgment unit is a water content comparison unit that compares the water content with a predetermined water content threshold value, a water content change ratio calculation unit that calculates the change ratio of the water content, and the change ratio and a predetermined change ratio It is judged as dry when the water content is smaller than the predetermined water content threshold and the water content change ratio is smaller than the predetermined content change threshold, and the water content change ratio comparing unit compares the threshold with the threshold. The blower according to claim 4.
The air blowing according to any one of claims 4 to 7, wherein the drying judging unit controls the operation of any one or more of the air blowing unit or the dehumidifying unit when judging the drying of the object. apparatus.
The air blowing apparatus according to any one of claims 4 to 7, wherein the drying judging unit stops the air blowing when judging the drying of the object.
The air blowing apparatus according to any one of claims 4 to 7, wherein when the drying judgment unit judges the drying of the object, the air blowing amount is reduced to operate for a certain period of time and then the air blowing is stopped.
The air blowing apparatus according to any one of claims 4 to 7, wherein the drying determining unit stops the dehumidifying unit when determining the drying of the object.
The air blower according to any one of claims 4 to 7, wherein the drying judgment unit reduces the amount of dehumidification and operates for a certain period of time when judging that the object is dried, and then stopping the dehumidifying unit. .
The louver further comprises a louver for changing the angle of the air blown out from the air outlet,
The control unit
The air flow control unit is configured to control air flow from the air outlet based on the water content calculated by the water content calculation unit.
The light emitting unit is
The air flow area blown from the air outlet is divided into a plurality of unit areas, and the detection light and the reference light are emitted for each of the unit areas,
The water content calculation unit
Calculating the water content for each of the plurality of unit areas;
The air flow control unit
The air blower according to claim 1, wherein the angle of the louver is changed based on the amount of water calculated for each of the plurality of unit areas.
The air flow control unit
The air blower according to claim 13, wherein an angle of the louver is changed so as to blow air toward a unit area having a large amount of water among the plurality of unit areas.
The air flow control unit
The air blower according to claim 13 or 14, wherein the air blowing amount by the air blowing unit is changed based on the water content calculated for each of the plurality of unit areas.
The air flow control unit
It has a ratio threshold comparison unit that compares the water content with a predetermined threshold,
The air blower according to claim 13, wherein the air blowing amount of the air blowing unit is changed based on the comparison result of the ratio threshold value comparing unit.
The water content calculation unit
Calculating a change rate of the water content for each of the plurality of unit areas;
The air flow control unit
The air blower according to claim 13, wherein an angle of the louver is changed based on the change rate.
The air flow control unit
The air blower according to claim 17, wherein an angle of the louver is changed so as to blow air toward a unit area having a small change rate among the plurality of unit areas.
The air flow control unit
The air blower according to claim 17, wherein the air blowing amount by the air blowing unit is changed based on the change rate for each of the plurality of unit areas.
The air flow control unit
A change rate threshold comparison unit that compares the change rate with a predetermined threshold;
The air blower according to claim 17, wherein the air blowing amount of the air blowing unit is changed based on the comparison result of the change rate threshold value comparing unit.