JP5243005B2 - Dehumidifier - Google Patents

Description

  The present invention relates to a dehumidifier.

  Prior art document information related to the dehumidifier of the present invention includes the following.

JP-A-6-126099 JP 2007-240100 A

  Patent Document 1 discloses a drum-type clothes drying method in which the temperature of clothes is detected by an infrared sensor focused on the center of the drum, and the degree of drying of the clothes is determined from the temperature difference from the warm air supplied into the drum. The machine is listed.

  However, in this clothes dryer, the clothes are stirred inside by the rotation of the drum, so that wrinkles are generated and the degree of drying of all clothes cannot be accurately determined. Therefore, depending on the cloth of the clothes, there are those that are dried (heated) too much and those that are not completely dried. Further, if there is something that has not been completely dried, there is a disadvantage that moisture is transferred to the dried clothes.

  Further, Patent Document 2 includes a dehumidifier that includes dehumidifying means for dehumidifying moisture contained in the air, sucks room air into the dehumidifying means by a blowing means, and circulates the dehumidified processing air into the room. Have been described. And in this patent document 2, the temperature detection means for detecting the temperature of indoor air, the humidity detection means for detecting the humidity of indoor air, and the infrared detection means for detecting the temperature of a to-be-dried object It is arranged so that the degree of drying of the clothes is determined based on the detection results of the temperature detecting means, the humidity detecting means and the infrared detecting means, and the output control of the dehumidifying means and the blowing means is performed.

  The dehumidifier of Patent Document 2 is not a sealed space such as a drum, but performs drying in a state where clothes are dried in a large room, so that the problem as in Patent Document 1 does not occur. .

  However, in Patent Document 2, the degree of drying of clothing is determined based on the detection result of the infrared detection unit and the detection result of the temperature detection unit and the humidity detection unit for detecting the temperature and humidity of the indoor air. Therefore, there is a problem that it is easily influenced by the determination of the degree of drying of clothes due to a change in the indoor environment. Also, it takes time to judge the situation even though it is actually dry. Furthermore, when there is a dry area in the middle part, it is extremely difficult to judge the situation.

  The present invention has been made in view of conventional problems, and it is an object of the present invention to provide a dehumidifier capable of accurately and quickly determining the degree of drying of clothing and performing optimal clothing drying control.

In order to solve the above-mentioned problem, the dehumidifier of the present invention sucks indoor air from the suction port by the blowing means, and circulates and supplies the treated air dehumidified by heating by the dehumidifying means including the heater to the room from the outlet. In the dehumidifier, a wind direction changing means for changing the blowing direction into the room by the blowing means, a temperature detecting means for the outlet for detecting the temperature of the processing air supplied from the outlet to the room, and a preset detection range An infrared sensor for detecting the temperature of a detection object located inside, a detection position changing means for changing a detection position by the infrared sensor, a detection temperature (To) by the temperature detection means for the outlet, and a blower means coefficient corresponding to the air volume and (alpha), based on the detected temperature (Ti) by inlet temperature detecting means for detecting the temperature of suction air in the room sucked from the suction port Temperature estimation means for estimating by calculation the a can be added to the detection target temperature (Tn) by process air that is heated to blown from the air outlet in the formula Tn = To- (To-Ti) × α And drying the detection object based on the estimated temperature (Tn) by the temperature estimation means and the detected temperature (Tc) of the detection object by the infrared sensor while changing the blowing direction of the processing air by the wind direction changing means. And a control means for executing a clothes drying mode for determining the degree.

According to this dehumidifier, the clothing that is the detection target by the processing air based on the temperature of the processing air at the air outlet and at least one of the amount of air blown by the air blowing means and the temperature detected by the temperature detecting means for the suction port Calculate and estimate the temperature that can be added to. Since the degree of drying of the detection object is determined based on the estimated temperature and the temperature detected by the infrared sensor, it is possible to sufficiently cope with changes in the indoor environment. Therefore, it is possible to prevent the inconvenience that the situation cannot be judged even though it is actually dry.

Here, when the amount of air blown by the blower is large (strong), the heat of the processing air can be sufficiently applied to the detection target. On the other hand, when the air volume is small (weak), the processing air cannot be sufficiently applied to the detection target. Therefore, the temperature that can be applied to the detection target can be accurately estimated by setting the amount of air blown by the blower means as various conditions. As a result, it is possible to reliably determine the degree of drying of the detection object.

Further, the detected temperature at the suction plug mouth is equivalent room temperature and substantially, the process air to the detection target becomes large temperature drops to reach when the room temperature is low. Conversely, when the room temperature is high, the temperature that falls before the processing air reaches the detection target becomes low. Therefore, the temperature that can be added to the detection target can be accurately estimated by setting the temperature detected by the suction port temperature detection means to various conditions. As a result, it is possible to reliably determine the degree of drying of the detection object.

In this case, it is preferable that the control means includes the temperature detected by the suction port temperature detection means (To) as a condition for determining the degree of drying. In this way, the degree of drying of the detection object can be accurately determined.

  Moreover, in this dehumidifier, it is preferable to change the detection by the infrared sensor in synchronization with the blowing direction by the wind direction changing means. If it does in this way, it can control that the temperature detected by an infrared sensor influences with the heat of processing air.

  Moreover, it is preferable to make the ventilation displacement speed of the area | region which can be judged that the detection target object is dry within the detection range by the said infrared sensor faster than the ventilation displacement speed of the area | region which can be judged that it is not drying. If it does in this way, the efficiency which dries all the clothes can be improved.

  Furthermore, it is preferable that the driving motor of the wind direction changing means is also used as the driving means of the infrared sensor. In this way, the number of parts can be reduced, so that the cost can be reduced.

  In the dehumidifier of the present invention, the degree of drying of the detection target is determined based on the estimated temperature of the processing air when it reaches the detection target and the temperature detected by the infrared sensor, so that it can sufficiently cope with changes in the indoor environment. . Therefore, the actual degree of drying of the detection object can be determined accurately and quickly.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show a dehumidifier according to an embodiment of the present invention. As shown in FIG. 1, this dehumidifier roughly divides the interior of a housing 10 made of a hexahedron that is long in the height direction and whose depth in the front-rear direction is thinner than the width in the left-right direction into a dehumidification passage 11 and a regeneration passage 12. Inside the heater 17, the dehumidifying rotor 19, the heat exchanger 21, and the regenerative air circulation fan 22 that constitute the dehumidifying means, and the indoor air circulation fan 23 that constitutes the air blowing means are disposed in the horizontal direction, and the lower part. The tank 26 is disposed in the tank.

  The housing 10 is formed with a suction port 13 formed of a plurality of slits on the back side, and a filter (not shown) is disposed on the inner surface of the suction port 13. Further, on the front side of the housing 10, an air outlet 14 communicating with the suction port 13 is formed in the upper portion, and a partition wall 15 constituting an involute passage is provided so as to guide air toward the air outlet 14. Yes. Inside the housing 10, the heat exchanger 21, the dehumidifying rotor 19, the heater 17, and the regenerative air circulation fan 22 are sequentially arranged from the suction port 13 side toward the front side. An indoor air circulation fan 23 is disposed in the partition wall 15. The heater 17 and the regenerative air circulation fan 22 are disposed in a duct portion 16 provided in the housing 10, and the duct portion 16 is connected to the heat exchanger 21 via a dehumidifying rotor 19. The duct portion 16 and the heat exchanger 21 that communicate with each other constitute a regeneration passage 12 that is partitioned from other dehumidification passages 11.

  The heater 17 is formed by winding a continuous coil around a mica plate, generates heat by power supplied from a power supply circuit (not shown), and heats the supplied dehumidification rotor 19 and the dehumidification rotor 19 disposed in the vicinity. To do. In the vicinity of the heater 17, a thermistor 18 serving as a temperature detecting means for detecting the heating temperature by the heater 17 is disposed.

  The dehumidifying rotor 19 has both the passages 11, 12 such that a region of about 3/4 is located in the dehumidifying passage 11 and a region of about 1/4 facing the heater 17 is located in the regeneration passage 12. It is arrange | positioned so that rotation is possible ranging over. The dehumidifying rotor 19 is obtained by holding a mesh-shaped ceramic honeycomb bonded with zeolite or silica gel by a holding member made of resin. The dehumidifying rotor 19 is rotated at a constant rotation speed set in advance by the rotor drive motor 20.

  The heat exchanger 21 constitutes a part of the regeneration passage 12 and is disposed so as to shield the dehumidification passage 11. The heat exchanger 21 is formed by welding a pair of panels formed in a symmetrical shape by vacuum forming or pressure forming, thereby forming a continuous passage through which regenerated air passes and a plurality of suction air passing outside. It is made of resin in which a through hole is formed. One end of the internal passage is connected to one end of the duct portion 16 provided with the heater 17 via the dehumidification rotor 19, and the other end is connected to the other end of the duct portion 16 provided with the regenerative air circulation fan 22. The

  The regeneration air circulation fan 22 and the indoor air circulation fan 23 are sirocco fans, and are rotated by a regeneration air circulation motor 24 and an indoor air circulation motor 25 which are driving means. The indoor air circulation motor 25 is a motor that can rotate at preset multi-stage rotational speeds.

  The tank 26 has a box-like shape with an upper opening that is detachably disposed in the lower part of the housing 10, and stores dehumidified water condensed in the heat exchanger 21. A float (not shown) floating in the stored water is disposed in the tank 26. The housing 10 is provided with a reed switch 27 as a full water detecting means for detecting the full water in the tank 26, and a magnet for operating the contact of the reed switch 27 is disposed in the float. The housing 10 is provided with a micro switch 28 as a tank detecting means for detecting the mounting state and the non-mounting state of the tank 26 at a disposing portion where the tank 26 is detachably disposed.

  And in the dehumidifier of this embodiment, as shown to FIG. 3 (A)-(D), in order to change the ventilation direction to the room | chamber interior by the indoor air circulation fan 23, a pair of movable louvers 29, 31 and a movable infrared sensor 33 are provided for detecting the dry state of the clothing that is the detection target when the clothing drying mode is executed.

  The first louver 29 also serves as a cover for closing the air outlet 14 of the housing 10, and is configured to be rotatable by a first louver drive motor 30. The first louver 29 serves as a first air direction changing means for changing the air blowing direction into the room by the indoor air circulation fan 23 up and down (vertical direction). The first louver drive motor 30 employs a stepping motor capable of positioning the air blowing direction at a predetermined angle (altitude).

  The second louver 31 is made up of a plurality of plates disposed above the partition wall 15 so as to be positioned below the first louver 29, and is synchronized with the second louver drive motor 32 via a link member. It is configured to be rotatable. The second louver 31 serves as second wind direction changing means for changing the air blowing direction into the room by the indoor air circulation fan 23 to the left and right (horizontal direction).

  The infrared sensor 33 is a single-element thermal sensor that detects the temperature (drying degree) of clothing by detecting a change in electrical characteristics caused by a change in the temperature of the element due to the thermal energy generated by the output infrared rays. Here, the detection principle by the infrared sensor 33 will be described. First, when the heated treated air is blown to wet clothing, the moisture at the location where the treated air hits evaporates, thereby removing the latent heat of vaporization and cooling the clothing, so that the surface temperature hardly changes. . However, as the evaporation of moisture proceeds, the latent heat of vaporization is not lost because there is no moisture, so the portion that has been exposed to the processing air is heated as it is. Therefore, the dry state of the clothes can be determined by detecting the surface temperature of the clothes with the infrared sensor 33.

  The infrared sensor 33 is disposed as a unit integrally incorporated in the casing 34 so as to be located beside the air outlet 14 of the housing 10. As shown in FIGS. 4A to 4C, the casing 34 has a shape obtained by cutting a part of the outer periphery of the cylinder in a plane, and has an opening 35 that exposes the infrared sensor 33 to the flat portion 34 a. I have. The casing 34 is configured to be rotatable by shaft portions 36 provided on both sides thereof being pivotally attached to the housing 10 and connecting a first sensor drive motor 37 to the shaft portion 36. Thus, the casing 34 serves as first detection position changing means for changing the detection position by the infrared sensor 33 up and down (vertical direction). The first sensor drive motor 37 is a stepping motor that can position the blowing direction at a predetermined angle (altitude).

  Inside the casing 34, an inner case 39 provided with an infrared sensor 33 and a substrate 38 is rotatably mounted. Similar to the casing 34, the inner case 39 has a shape obtained by cutting a part of the outer periphery of the cylinder in a planar manner, and is disposed so that the infrared sensor 33 is exposed on the flat portion 39a. The inner case 39 is connected to the second sensor drive motor 41 via a pair of gears 40A and 40B, and the detection position by the infrared sensor 33 is changed to the left and right (horizontal direction) by driving the second sensor drive motor 41. It plays the role of the 2nd detection position change means to do.

  As shown in FIG. 3A, an operation panel 42 is arranged on the upper surface of the housing 10 for the user to execute and select a predetermined operation. The operation panel 42 is provided with a plurality of switches 43 and an LED 44 for displaying a selected state by turning on and off.

  The dehumidifier configured as described above controls each component according to a preset program by the microcomputer 45 which is a control means mounted on a control board (not shown), and executes a dehumidifying operation in a normal dehumidifying mode or a clothing drying mode. These controls are executed when the micro switch 28 detects the mounting state of the tank 26 and the reed switch 27 detects that the tank 26 is not full.

  In the normal dehumidification mode, when the user selects “strong” wind operation, the indoor air circulation fan 23 is operated at a high speed with the energization amount to the indoor air circulation motor 25 increased, and the heater 17 is always powered. To operate in a high temperature (strong) state. Further, when the user selects the “weak” wind operation, the indoor air circulation fan 23 is operated at a low speed with the energization amount to the indoor air circulation motor 25 being small, and the heater 17 is cooled at a low temperature ( Operate in a weak state. Further, when the user selects “automatic standard” operation, the “strong” wind operation, the “weak” wind operation, and the intermediate between them are based on the detection value of the humidity sensor 46 disposed in the vicinity of the suction port 13. A certain “medium” wind operation is automatically selected and operated.

  Further, in the clothes drying mode, the microcomputer 45 is a temperature estimation means for estimating the temperature Tn at which the processing air can be applied to the clothes based on the temperature To detected by the outlet thermistor 47 and various conditions inside and outside the apparatus. Play a role. And while changing blast volume (speed) based on the dry state of clothes, the louver drive motors 30 and 32 change the blowing direction of the process air dehumidified indoors. In addition, the detection positions are changed in synchronization with the sensor drive motors 37 and 41 so as to maintain a constant phase angle with the blowing direction. Further, the degree of drying of the clothes is determined based on the estimated temperature Tn and the temperature Tc detected by the infrared sensor 33. When it is determined that all the clothes are dried, the clothes drying mode is terminated.

Specifically, the estimated temperature Tn is estimated (calculated) by the following calculation formula using various conditions including the temperature detected by the inlet thermistor 48 and the coefficient α corresponding to the air flow rate of the indoor air circulation fan 23. It is configured.
Tn = To− (To−Ti) × α

  That is, the detected temperature Ti at the suction port 13 is substantially the same as the room temperature, and when the room temperature (Ti) is low, the temperature that falls before the processing air reaches the clothing increases. Conversely, when the room temperature (Ti) is high, the temperature that falls before the processing air reaches the clothing is low. Therefore, the temperature that can be added to the clothes can be accurately estimated by setting the detected temperature Ti at the suction port 13 as various conditions.

  Moreover, when the air volume by the indoor air circulation fan 23 is large (strong), the heat of the processing air can be sufficiently applied to the clothes. On the other hand, when the air volume is small (weak), it is impossible to sufficiently apply the treatment air to the clothing. Therefore, the temperature that can be applied to the clothes can be accurately estimated by setting the coefficient α corresponding to the amount of air blown by the indoor air circulation fan 23 as various conditions. The coefficient α is set to 0.2 when the air volume is “strong” wind and to 0.8 when the air volume is “weak” wind.

Further, the drying determination of the clothing is based on the estimated temperature Tn, the detection temperature Ti by the suction port thermistor 48, and the coefficient β corresponding to the time until the detection by the infrared sensor 33 after blowing the processing air on the clothing. In addition, the determination is made by comparing with the temperature Tc detected by the infrared sensor 33.
Tc ≦ Tn− (Tn−Ti) × β (non-dry)
Tc> Tn- (Tn-Ti) × β (dry)

  That is, since the room temperature (Ti) is one of the most important determination conditions in determining the drying of clothes, the dry state of the clothes can be accurately determined by using the detected temperature Ti at the suction port 13 as a determination condition.

  Moreover, since the detection temperature Tc by the infrared sensor 33 is greatly influenced by the temperature of the processing air, the coefficient β corresponding to the time until the detection by the infrared sensor 33 after the processing air is blown on the clothing is used as the determination condition. Thus, the dry state of the clothes can be accurately determined. Note that the coefficient β is set to be small if the time t from when the processing air is sprayed until detection is short, and to be large so as to approach “1” if the time t is long.

  Moreover, in the clothes drying mode of the present embodiment, if there is an area where it can be determined that the object to be detected is dry in the range detectable by the infrared sensor 33 by driving the sensor drive motors 37 and 41, the area passes through that area. The ventilation displacement speed (for example, 0.4 rad / sec) to be performed is configured to be faster than the ventilation displacement speed (for example, 0.15 rad / sec) in an area where it can be determined that it is not dry. In addition, when there are areas on both sides where it can be determined that the clothes are not dried, the areas are not blown and detected thereafter.

  Next, the control by the microcomputer 45 according to the dry state of clothing will be specifically described.

  First, as shown in FIG. 5, the user dries the clothes and installs the dehumidifier so as to be within the air blowing range and the detection range described in the instruction manual or the like. Then, the clothes drying mode is executed by operating the operation panel 42.

  Then, the microcomputer 45 first operates the first sensor drive motor 37, moves the detection direction of the infrared sensor 33 in the vertical direction, sets the detection height to the first altitude, and stops. Next, as shown in FIGS. 6 and 7, the second sensor drive motor 41 is operated to move the detection direction of the infrared sensor 33 in the horizontal direction, and the range in which the clothes are dried at the first altitude ( Whether it is dried or not). When the horizontal direction is detected for one or more round trips, the second sensor drive motor 41 is stopped and moved again in the vertical direction to change the detected height to the second height higher than the first height and moved in the horizontal direction. And detect the area where the clothes are dried. Thereby, as shown in FIG. 8, the range where the clothes are dried can be recognized, and the recognition range is set as the blowing range and the detection range.

  Thereby, the range of the width direction and the height direction where clothes are dried can be recognized correctly. As a result, when the garment is dried in two upper and lower tiers, or when there is a high level difference even with only one tier, it is possible to reliably blow the processing air to the garment over the whole depending on the situation.

  Thereafter, the heater 17 and the regenerative air circulation fan 22 are operated, and the first louver drive motor 30 is operated to adjust the blowing height to the height at which the clothes are dried and then stopped, and then the second louver drive. The motor 32 is operated to blow the process air only in the range where the clothes are dried, and the temperature Tc of the clothes is detected by the infrared sensor 33 to determine the dry state.

  At this time, when the temperature To of the processing air is high, a difference in temperature occurs between the time when the processing air is hit and the time when the processing air is not hit even in the dry clothes, so that the accuracy of the clothes drying determination is deteriorated. Moreover, when the focus of the blowing direction of process air and the detection direction of clothing temperature is the same, the precision of clothing drying judgment will worsen by the influence of the shaking of the clothing by ventilation.

  Therefore, in this embodiment, as shown in FIG. 9, the detection direction of the infrared sensor 33 is changed by the second sensor drive motor 41 so as to maintain a constant phase angle with the blowing direction by the second louver drive motor 32. And in order to prevent reliably that the ventilation range to clothing overlaps with the detection range by the infrared sensor 33, it is set as the structure which makes the height of a ventilation direction different from the height of a detection direction. Specifically, the height of the detection direction by the infrared sensor 33 is higher than the blowing direction of the processing air in the range where the clothes are dried.

  In this way, the clothes are dried, and the estimated temperature Tn, the detected temperature Ti at the suction port 13 and the coefficient β are compared with the detected temperature Tc by the infrared sensor 33, as shown in FIG. In the range S1 where the clothes are dried, if it is determined that the clothes dried in the predetermined range S2 in the middle region are dried, the air displacement speed when passing through the dry range S2 is set to the air displacement in another range. Make it faster than speed. Of course, the detected displacement speed by the infrared sensor 33 is also shifted in synchronization.

  Also, as shown in FIG. 10 (B), in the range S1 where the clothes are dried, if it is determined that the clothes that have been dried in the region located at the end are dried, the air blowing range is excluded so as to exclude the drying range S3. Change to S1 '.

  Furthermore, when the clothes are dried in two upper and lower tiers, or when the difference in height is large even at one tier, the air flow height is changed by operating the first louver drive motor 30. The detected altitude is changed by operating the first sensor drive motor 37 in synchronization. The vertical altitude change may be performed after it is determined that the entire horizontal direction has been dried, or may be configured so as to be changed after one reciprocation in the horizontal direction.

  Thus, in the dehumidifier of this embodiment, based on the temperature To of the process air in the blower outlet 14, and various conditions (Ti, (alpha)) inside and outside the apparatus, it adds to the clothing which is a detection target object by process air. Since the possible temperature is estimated and the degree of drying of the clothing is determined based on the estimated temperature Tn and the detected temperature Tc by the infrared sensor 33, it is possible to sufficiently cope with changes in the indoor environment. Therefore, it is possible to accurately and quickly determine the actual degree of drying of the clothes, and it is not possible to determine the actual dryness despite the fact that the clothes are actually dried.

  In particular, the various conditions for estimating the temperature Tn include the amount of air blown by the indoor air circulation fan 23. Moreover, the detection temperature Ti at the suction port 13 that is substantially equivalent to room temperature is included as various conditions for estimating the temperature Tn. Therefore, the temperature that can be applied to the clothes can be accurately estimated.

  In addition, as a condition for determining the degree of drying of clothes, a coefficient β corresponding to the estimated temperature Tn, the detection temperature Ti by the suction port thermistor 48, and the time until detection by the infrared sensor 33 after blowing the processing air on the clothes. Is determined by comparing with the temperature Tc detected by the infrared sensor 33, and the degree of dryness of the clothing detection target can be accurately determined.

  Furthermore, since the detection direction by the infrared sensor 33 is changed in synchronism so as to maintain a predetermined phase angle with respect to the blowing direction of the processing air, the detection temperature by the infrared sensor 33 is affected by the heat of the processing air. It can be suppressed. Moreover, in the detection range by the infrared sensor 33, the air displacement rate in the region (range S2) where it can be determined that the detection target is dry is faster than the air displacement rate in the region where it can be determined that the object is not dry. Therefore, the efficiency of drying all clothing can be improved.

  In addition, the dehumidifier of this invention is not limited to the structure of the said embodiment, A various change is possible.

  For example, in the above-described embodiment, the infrared sensor 33 is disposed as an infrared unit that can be rotated in the vertical and horizontal directions by the pair of sensor drive motors 37 and 41, but the infrared sensor 33 is disposed in the first louver 29, for example. Thus, the first louver drive motor 30 for rotating in the vertical direction may also be used, and the first sensor drive motor 37 may not be mounted. Further, when the detection of the vertical direction is not required, the infrared sensor 33 may be provided in the second louver 31 so that a dedicated motor for rotating the infrared sensor 33 is not mounted. In this way, the number of parts can be reduced, so that the cost can be reduced.

  Moreover, in the said embodiment, if it is judged that the clothes hung on the area | region located in an edge in the range S1 where clothes are dried, air blowing range S1 'will be changed so that the dry range S3 may be excluded. Although it was configured, it may be configured to dehumidify by increasing the displacement speed in the same manner as the drying range S2 of the intermediate region.

  Furthermore, in the said embodiment, it was set as the structure containing the coefficient (beta) corresponding to the detection temperature Ti in the suction inlet 13, and the time until it detects by the infrared sensor 33 as conditions for judging clothing. May be added as a determination condition, and other factors may be added as a determination condition.

It is the schematic which shows the dehumidifier which concerns on embodiment of this invention. It is a block diagram which shows the structure of a dehumidifier. 1 shows a configuration of the dehumidifier of FIG. 1, (A) is a plan view, (B) is a partial front view, (C) is a cross-sectional view of the main part of (B), and (D) is another part of (B). It is principal part sectional drawing. An infrared unit is shown, (A) is a top view, (B) is sectional drawing, (C) is another sectional drawing. It is the schematic which shows the ventilation and detection range by a dehumidifier. It is the schematic which shows 1 process of the range detection by an infrared sensor. It is the schematic which shows another 1 process of the range detection by an infrared sensor. It is the schematic which shows the ventilation after a range detection, and a detection range. It is the schematic which shows the execution state of clothing drying mode. It is the schematic for demonstrating control in clothes drying mode.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Housing 11 ... Dehumidification passage 12 ... Regeneration passage 13 ... Suction port 14 ... Air outlet 17 ... Heating heater (dehumidification means)
19 ... Dehumidification rotor (dehumidification means)
21 ... Heat exchanger (dehumidification means)
22 ... Regenerative air circulation fan (dehumidification means)
23. Indoor air circulation fan (air blowing means)
29 ... 1st louver (wind direction changing means)
31 ... 2nd louver (wind direction changing means)
33 ... Infrared sensor 34 ... Casing (detection position changing means)
37... First sensor drive motor (detection position changing means)
39 ... Inner case (detection position changing means)
41 ... Second sensor drive motor (detection position changing means)
45 ... Microcomputer (control means)
47 ... Thermistor for air outlet 48 ... Thermistor for air inlet

Claims (5)

In a dehumidifier that sucks indoor air from a suction port by a blowing means and heats and dehumidifies it by a dehumidifying means including a heater, and circulates the processed air from the outlet to the room.
Wind direction changing means for changing the blowing direction into the room by the blowing means;
Temperature detection means for the air outlet for detecting the temperature of the processing air supplied from the air outlet into the room;
An infrared sensor for detecting the temperature of a detection object located within a preset detection range;
Detection position changing means for changing the detection position by the infrared sensor;
Inlet temperature detection for detecting the temperature detected by the temperature detecting means for the air outlet (To) , the coefficient (α) corresponding to the amount of air blown by the air blowing means, and the temperature of the intake air sucked from the air inlet. Based on the detected temperature (Ti) by the means, a temperature (Tn) that can be added to the detection object by the heated process air blown from the outlet is calculated by the formula Tn = To− (To−Ti ) Temperature estimation means for calculating and estimating by × α ,
While changing the blowing direction of the processing air by the wind direction changing means, the degree of drying of the detection object is determined based on the estimated temperature (Tn) by the temperature estimation means and the detected temperature (Tc) of the detection object by the infrared sensor. Control means for executing a clothing drying mode to be determined;
A dehumidifier characterized by comprising: 2. The dehumidifier according to claim 1, wherein the control unit includes a temperature detected by the suction port temperature detection unit (To) as a condition for determining the degree of drying.   The dehumidifier according to claim 1 or 2, wherein detection by the infrared sensor is changed in synchronization with a blowing direction by the wind direction changing means.   2. The air displacement rate in a region where it can be determined that the detection target is dry within the detection range by the infrared sensor is faster than the air displacement rate in a region where it can be determined that the object is not dry. The dehumidifier according to any one of claims 3 to 4.   The dehumidifier according to any one of claims 1 to 4, wherein a driving motor of the wind direction changing unit is also used as a driving unit of the infrared sensor.

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