JP2006075697A - Dehumidifier and control method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dehumidifier capable of efficiently removing indoor humidity and a control method thereof.
SOLUTION: A support plate 11 having a water guide path 16 penetrating the front and back surfaces, heat radiation fins 17 and cooling fins 12 provided on a front surface side 22 and a back surface side 21 of the support plate 11, respectively, and heat radiation fins 17 and cooling fins. The Peltier element 13 interposed between the Peltier elements 13 is configured such that when the Peltier element 13 is energized, the back surface side 21 of the support plate 11 is cooled and dehumidified, and heat is radiated to the front surface side 22 of the support plate 11. The dew condensation water generated on the back surface side 21 of the support plate 11 is a dehumidifier guided to the front surface side 22 of the support plate 11 through the water conduit 16, and is used for ice melting that blows air toward the cooling fins 12. A dehumidifier comprising a fan 20.
[Selection] Figure 1

Description

  The present invention relates to a dehumidifier and a control method thereof.

  As a dehumidifier for removing indoor moisture, for example, a dehumidifier using a Peltier element as disclosed in Patent Document 1 is known. The Peltier element is also referred to as a thermoelectric element or an electronic cooling element, and exhibits a Peltier effect that performs electronic cooling and electronic heating by energization. The dehumidifier disclosed in Patent Document 1 includes a Peltier element 102, a heat radiating fin 103, a cooling fin 104, a water guide filter 105, and a temperature sensor 106, as shown in the schematic cross-sectional configuration diagram of FIG.

  The Peltier element 102 has a heat absorbing portion 107 that absorbs heat and a heat radiating portion 108 that radiates heat, the heat absorbing portion 107 and the cooling fin 104 are connected, and the heat radiating portion 108 and the heat radiating fin 103 are connected. Yes.

  The water guide filter 105 is a member for guiding the condensed water generated in the cooling fins 104 to the outside. One end 109 is connected to the lower part of the cooling fin 104, and the other end 110 connects the radiating fins 103. It is exposed through.

  The temperature sensor 106 is a sensor that detects the temperature around the cooling fin 104, and is provided on the top of the cooling fin 104. In addition, a heater (not shown) for heating the cooling fin 104 is provided in the vicinity of the temperature sensor 106.

  The dehumidifier 101 configured as described above is attached to the opening 112 formed in the wall 111 partitioning the dehumidifying space so that the cooling fins 104 are on the indoor side and the radiating fins 103 are on the outdoor side. Then, the Peltier element 102 is actuated to cool the cooling fins 104, the indoor moisture is condensed on the cooling fins 104 to form dew condensation water, and the dew condensation water is guided to the radiation fins 103 side through the water conduction filter 105 to be vaporized. This removes moisture in the room.

Further, in order to prevent the condensed water on the cooling fin 104 from freezing, when the temperature around the cooling fin drops to, for example, about 10 ° C., the heater is heated to warm the cooling fin 104, and the temperature around the cooling fin is For example, when the temperature rises to about 20 ° C., the heating of the heater is stopped.
JP 2000-274925 A

  However, since the dehumidifier disclosed in Patent Document 1 heats the heater by heating the heater so that the condensed water on the cooling fin does not freeze, the surface temperature of the cooling fin is sufficiently high. There was a problem that the dehumidifying effect was low without lowering. In particular, when the room temperature is low, the above problem has been remarkable because the heater is frequently heated to heat the cooling fin.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a dehumidifier capable of efficiently removing moisture in a room and a control method therefor.

  The above object of the present invention is to provide a support plate having a water guide path penetrating the front and back surfaces, radiation fins and cooling fins respectively provided on the front surface side and the back surface side of the support plate, and interposed between the radiation fins and the cooling fins. The Peltier element is configured so that the back side of the support plate is cooled and dehumidified by energization of the Peltier element, and is radiated to the front side of the support plate. A dehumidifier in which the condensed water generated on the side is guided to the surface side of the support plate through the water conduit, and includes a defrosting fan that blows air toward the cooling fin. Is achieved.

In this dehumidifier, it is preferable that a water guide member made of a moisture absorbing material is inserted into the water guide channel, and one end of the water guide member is thermally connected to the cooling fin.
In addition, a heat dissipating fin cover that covers the heat dissipating fins and a heat dissipating fan are further provided, and by the suction operation of the heat dissipating fan, the pressure inside the heat dissipating fin cover is reduced with respect to the pressure on the back side of the support plate. A negative pressure is preferred.

  A plurality of the cooling fins are provided, each of which is formed in a flat plate shape and disposed adjacent to the horizontal direction, and the ice melting fan is attached above the cooling fins. It is preferable.

  Moreover, it is preferable to further comprise temperature detection means for detecting the temperature at or near the surface of the cooling fin, and control means for controlling the operation of the ice melting fan based on the temperature detected by the temperature detection means.

  The object of the present invention is a method for controlling a dehumidifier according to any one of claims 1 to 4, wherein the temperature of the surface of the cooling fin or the vicinity thereof after energization of the Peltier element is measured by a temperature sensor. A step of detecting, a step of operating the ice melting fan for a predetermined time when a detected temperature detected by the temperature sensor is lowered to a first operation start temperature set in advance, and an operation of the ice melting fan. A step of measuring an evaluation time from the start until the detected temperature drops again to the first operation start temperature after the ice melting fan is stopped; the evaluation time and a preset reference time; If the evaluation time is greater than the reference time, the ice melting fan is operated, while if the evaluation time is less than the reference time, the detected temperature is It is achieved by the control method of the dehumidifier, characterized in that it comprises the step of operating the break-up fan when lowered to the second operation start temperature which is set lower than the first operation starting temperature.

  ADVANTAGE OF THE INVENTION According to this invention, the dehumidifier which can remove indoor moisture efficiently, and its control method can be provided.

  Hereinafter, a dehumidifier of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic cross-sectional configuration diagram of a dehumidifier 1 according to an embodiment of the present invention.

  As shown in FIG. 1, the dehumidifier 1 includes a support plate 11, a cooling fin 12, a cooling fin cover 13, a Peltier element 14, a heat transfer material 15, a water guiding member 16, a heat radiating fin 17, a heat radiating fin cover 18, and a heat radiating fan. 19 and an ice melting fan 20 are provided.

  The support plate 11 is a rectangular plate material, and for example, a plate material made of wood, metal, synthetic resin, or the like can be used.

The cooling fins 12 are fins that condense moisture in the indoor air to form condensed water, and a plurality of the cooling fins 12 are attached to the back surface side 21 of the support plate 11. The plurality of cooling fins 12 are each formed in a flat plate shape and are disposed adjacent to each other in the horizontal direction.
The cooling fin cover 13 is a box having a U-shaped cross section, and is attached to the back surface side 21 of the support plate 11 so as to cover the cooling fin 12. A predetermined size ice melting air intake port 23 is formed on the upper surface of the cooling fin cover 13, and a predetermined size ice melting air exhaust port is formed below the surface parallel to the support plate 11. 24 is formed.

  The Peltier element 14 is provided between the cooling fins 12 and the heat radiating fins 17 and includes a heat radiating portion 25 that radiates heat and a heat absorbing portion 26 that absorbs heat. The heat radiating portion 25 is thermally connected to one side 27 of the heat radiating fin 17, and the heat absorbing portion 26 is thermally connected to one side 28 of the heat transfer material 15. In addition, the other side 29 of the heat transfer material 15 and the cooling fin 12 are thermally connected, so that the heat absorbing portion 26 of the Peltier element 14 and the cooling fin 12 are thermally connected via the heat transfer material 15. Connected. As the heat transfer material 15, for example, a metal material such as copper can be used.

  The water guide path 16 is a flow path for guiding the condensed water accumulated at the bottom of the cooling fin 12 to the heat radiating fin 17, and passes through the front and back surfaces of the support plate 11 to communicate the cooling fin 12 and the heat radiating fin 17. It is formed to do. Further, a water guide member 30 made of a hygroscopic material is inserted into the water guide channel, and one end portion 31 of the water guide member 30 is thermally connected to the lower portion of the cooling fin 12 and the other end portion. 32 is thermally connected to the lower part of the radiating fin 17. Further, the bottom portion of the one end portion 31 of the water guide member 30 is in contact with the bottom surface of the cooling fin cover 13. As the moisture-absorbing material, for example, moisture-absorbing fibers such as highly crosslinked polyacrylate fibers and cellulosic fibers, sponge, cotton, and the like can be used.

  The heat radiating fin 17 is a fin for radiating the heat radiated from the heat radiating portion 25 of the Peltier element 14 to the outside and for vaporizing the condensed water led from the cooling fin 12 by the water guiding member 16. A plurality of attachments are made on the surface side 22. Each of the plurality of heat radiation fins 17 is formed in a pin shape extending in a direction perpendicular to the surface 20 of the support plate 11 and is disposed adjacent to each other. Further, the outer periphery of the end portion of the heat dissipating fin 19 formed of the plurality of heat dissipating fins 17 on the heat dissipating fan 19 side is covered with a cylindrical packaging member 43. The packaging member 43 can be formed of, for example, a metal material or plastic. It can also be formed by winding a cloth or a synthetic resin film.

  The radiating fin cover 18 is a box having a U-shaped cross section, and is attached to the surface side 22 of the support plate 11 so as to cover the radiating fins 17. The radiating fin cover 18 is formed with a plurality of slit-shaped outdoor air intake ports 33, and an outdoor air exhaust port 35 having a predetermined size is formed on a surface parallel to the support plate 11. .

The heat dissipating fan 19 is a fan for releasing the water vapor of the condensed water vaporized by the heat dissipating fins 17 and the heat dissipated from the heat dissipating fins 17 to the outside. The heat dissipating fins 19 cover the outdoor air exhaust ports 35. The cover 18 is attached to a surface parallel to the support plate 11.
The ice melting fan 20 is a fan for sending air to the cooling fins 12, and is attached above the cooling fins 12 on the back surface side 21 of the support plate 11. As the ice melting fan 20, for example, an axial fan or a sirocco fan can be used.

  Next, the operation of the dehumidifier 1 according to this embodiment will be described.

  First, with respect to the opening 41 formed in the wall 40 that partitions the dehumidifying space, the support plate 11 is placed so that the cooling fins 12 and the ice melting fan 20 are on the indoor side, and the heat radiation fins 17 and the heat radiation fan 19 are on the outdoor side. Attach to wall 40.

  Next, the Peltier element 14 is operated by supplying a DC voltage to the Peltier element 14 from a power source (not shown). At this time, since the heat absorption part 26 of the Peltier element 14 absorbs the heat of the cooling fin 12 via the heat transfer material 15, the cooling fin 12 is cooled, and the absorbed heat is radiated via the heat dissipation part 25 of the Peltier element 14. Heat is radiated from the fins 17.

  Since the cooling fin 12 is cooled by the operation of the Peltier element 14, moisture in the indoor air is condensed on the cooling fin 12 and becomes condensed water. Condensed water falls to the lower part of the cooling fin 12 due to gravity, accumulates on the bottom surface of the cooling fin cover 13, is absorbed by the water guide member 30 made of a moisture absorbing material inserted into the water guide path 16, and is guided to the heat radiating fin 17 side. The Then, it is vaporized by the heat radiated from the radiation fins 17 and becomes water vapor.

  The water vapor of the condensed water is sucked and released to the outside by the operation of the heat dissipating fan 19. That is, since the inside of the radiating fin cover 18 becomes negative pressure by the operation of the radiating fan 19, air flows into the radiating fin cover 18 from the outdoor air intake port 33 and is released from the radiating fan 19. The water vapor of the condensed water rides on the air flow and passes through the outdoor air exhaust port 35 and the heat dissipating fan 19 and is discharged to the outside. Similarly, the heat generated by the radiating fins is sucked by the operation of the radiating fan and released to the outside of the room.

  When the cooling of the cooling fins 12 is further advanced, the condensed water condensed on the cooling fins 12 freezes to become ice, but the freezing of the condensed water is actively advanced. When a large amount of condensed water freezes on the surface of the cooling fin 12, the ice melting fan 20 is operated. The air sent in by the ice melting fan 20 flows into the cooling fin cover 13 from the ice melting air inlet 23 provided on the upper surface of the cooling fin cover 13, and the ice on the cooling fin 12 is melted. The air flows out from the air exhaust port 24 into the room. The defrosted condensed water falls due to gravity and the wind pressure of the ice melting fan 20 and accumulates on the bottom surface of the cooling fin cover 13. Then, it is absorbed by the water guide member 30 made of the moisture absorbing material below the cooling fin 12 and guided to the side of the heat radiating fin 17, vaporized by the heat radiating fin 17, and then released to the outside by the heat radiating fan 19.

  After the ice melting fan 20 is stopped, the condensation water begins to freeze again, and the humidity in the room is removed. When a large amount of condensed water freezes on the cooling fin 12, the ice melting fan 20 is operated again to freeze the ice and discharge it outside the room in the same manner as described above.

In this way, the condensed water condensed on the cooling fins 12 is positively frozen, and when a large amount of condensed water freezes, the ice melting fan 20 is operated to defrost the ice, and a large amount of condensed water is taken outdoors. Since it is made to discharge | emit, the indoor humidity can be removed in large quantities collectively.
Further, the dewed condensed water is forcibly dropped to the bottom surface of the cooling fin cover 13 by the wind pressure of the ice melting fan 20 attached above the cooling fins 12 and is absorbed by the water guide member 30 made of a moisture absorbing material. Condensed water can be removed quickly.

  Moreover, since the surface temperature of the cooling fin 12 can be kept low by actively freezing the cooling fin 12, the humidity in the room can be efficiently removed even when the room temperature is low.

  Moreover, since the air is blown into the cooling fin cover 13 by the operation of the ice melting fan 20, the inside of the cooling fin cover 13 is pressurized. As a result, a pressure difference is generated between the cooling fin cover 13 and the radiating fin cover 18, and the condensed water absorbed in the water guiding member 30 easily flows to the radiating fin 17 side. Condensed water accumulated in the can be quickly discharged to the radiation fin 17 side. Further, since the air pressure in the radiating fin cover 18 located on the intake side of the radiating fan 19 is lowered by the operation of the radiating fan 19, the pressure difference between the cooling fin cover 13 and the radiating fin cover 18 is reduced. Therefore, the condensed water accumulated on the bottom surface of the cooling fin cover 13 can be discharged to the radiating fin 17 side more quickly.

  Further, after the ice melting fan 20 is stopped, the condensation of the condensed water starts again on the cooling fin 12 side, so that it is absorbed by the end portion 31 of the water guide member 30 made of a moisture absorbing material that is thermally connected to the lower portion of the cooling fin 12. Condensed water that has been frozen will also freeze. Therefore, since the water conduit 16 is blocked by the icing of the condensed water absorbed by the end portion 31 of the water guiding member 30, the condensed water guided to the radiating fin 17 side flows back to the cooling fin 12 side. Can be prevented. Furthermore, outdoor humid air can be prevented from flowing into the cooling fin 12 through the water conduit 16.

  In addition, since the radiating fins 17 are located on the intake side of the radiating fan 19, the air pressure on the radiating fins 17 side is lowered, and the vaporization of condensed water is promoted.

  Further, the condensed water absorbed on the heat radiating fin 17 side of the water guiding member 30 made of a moisture absorbing material is vaporized, so that the condensed water absorbed on the cooling fin 12 side of the water guiding member 30 is radiated by the capillary phenomenon. It will be guided to the side and the vaporization of condensed water will be promoted.

  Further, since the outer periphery of the end portion of the heat dissipating fin assembly 42 on the side of the heat dissipating fan 19 is covered with a cylindrical packaging member 43, the outdoor air intake port 33 of the heat dissipating fin cover 18 is activated by the operation of the heat dissipating fan 19. Thus, the air that has flowed into the radiating fin cover 18 from the radiating fin 17 can be guided so as to pass through the connecting portion side of the radiating fin 17 with the Peltier element 14. Thereby, the heat radiated by the radiating fins 17 and the water vapor of the dew condensation water can be efficiently and surely released to the outdoors.

  Next, the control method of the dehumidifier 1 which concerns on this embodiment is demonstrated. First, the dehumidifier 1 is incorporated in a dehumidification control device 51 as shown in FIG. FIG. 2 is a block diagram for explaining the dehumidification control device 51.

As shown in FIG. 2, the dehumidifier 1 is electrically connected to a control unit main body 52 that controls all operations. Further, a DC power source 53, an input unit 54, a temperature detection unit 55, a humidity detection unit 56, a storage unit 57, a timer unit 58, and a display unit 59 are electrically connected to the control unit main body 52.
The control unit main body 52 includes a dehumidifying operation control unit 60 and an ice melting fan control unit 61. The dehumidifying operation control unit 60 is a control unit that outputs an operation start signal and an operation stop signal to the Peltier element 14 and the heat dissipating fan 19, and the ice melting fan control unit 61 supplies an operation start signal and an operation stop to the ice melting fan 20. It is a control part which outputs a signal.

  The direct current power source 53 includes an AC / DC conversion unit that converts a commercial alternating current power source into a required direct current voltage.

  The input unit 54 is a part that receives an operation command from a user, and inputs a set humidity, inputs a start and stop of a dehumidifying operation, and the like.

  The temperature detection means 55 is a device that detects the surface temperature of the cooling fin 12, and for example, a temperature sensor such as a thermistor or a thermocouple can be used.

  The humidity detection means 56 is a device that detects the humidity in the room. For example, a humidity sensor such as a polymer film humidity sensor, a ceramic humidity sensor, or an electrolyte humidity sensor can be used.

  The storage unit 57 stores preset operation start temperature Tn, reference time tn, and allowable time tnmax. The operation start temperature Tn is a reference temperature for starting the operation of the ice melting fan 20, and the first operation start temperature T1, the second operation start temperature T2, and the third operation start temperature T3 are increased in a stepwise manner. ... is set.

The reference time tn is a reference time for starting the operation of the ice melting fan 20, and is set corresponding to the operation start temperature Tn. For the first operation start temperature T1, the first reference time tn is set. The second reference time t2... Is set for the time t1 and the second operation start temperature T2.
The allowable time tnmax is a reference time for operating the ice melting fan 20 when the dehumidifying operation of the dehumidifier 1 does not reach the operation start temperature Tn even if the dehumidifying operation is performed for a predetermined time. This allowable time tnmax is also set corresponding to the operation start temperature Tn. The first allowable time t1max for the first operation start temperature T1 and the second allowable time for the second operation start temperature T2. t2max... is set.

  The timer unit 58 evaluates the time until the surface temperature of the cooling fin 12 decreases to the operation start temperature Tn of the ice melting fan 20 again after the ice melting fan 20 is stopped after the operation of the ice melting fan 20 is stopped. It has a timer function.

  The display unit 59 is a part that displays indoor humidity, set humidity, and the like. For example, an LED display, a liquid crystal display, or the like can be used.

The control method of the dehumidification control device 51 configured as described above will be specifically described using a time chart example showing the operation steps of the ice melting fan 20 shown in FIG.
First, after the user inputs the set humidity from the input unit 54, the user inputs a signal for starting the dehumidifying operation from the input unit 54. Thereby, an operation start signal is input to the dehumidifying operation control unit 60 of the control unit main body 52, and the dehumidifying operation is started (point A).

  The surface temperature of the cooling fin 12 is lowered by the start of the dehumidifying operation. Until the surface detection temperature T of the cooling fin 12 detected by the temperature detection means 55 reaches the first operation start temperature T1 of the ice melting fan 20, only the dehumidifying operation is performed. When the surface detection temperature T of the cooling fin 12 is lowered to the first operation start temperature T1, that is, at the point B, the ice melting fan control unit 61 outputs a signal for starting the operation of the ice melting fan 20 to perform the dehumidifying operation. In parallel, the ice melting fan 20 is operated for a predetermined time. At this time, since the indoor air is blown to the cooling fins 12 by the operation of the ice melting fan 20, the surface detection temperature T of the cooling fins 12 rises. T decreases and reaches the first operation start temperature T1 again (point C).

  At the point C, when the operation of the ice melting fan 20 measured by the timer unit 58 is started (point B), the surface detection temperature of the cooling fin again decreases to the first operation start temperature T1 after the ice melting fan is stopped. The ice melting fan control unit 61 determines whether or not the evaluation time t1st of (C point) is equal to or shorter than the first reference time t1. At point C, since the evaluation time t1st is longer than the first reference time t1, the ice melting fan control unit 61 outputs a signal for operating the ice melting fan 20, and in parallel with the dehumidifying operation, the ice melting fan. 20 is activated for a predetermined time. After the surface detection temperature T of the cooling fin 12 rises in the same manner as described above, it decreases as the ice melting fan 20 stops and reaches the first operation start temperature T1 again (point D).

  The time for evaluation from when the operation of the ice melting fan 20 is started at the point C to when the surface detection temperature T of the cooling fin 12 is lowered to the first operation start temperature T1 again after the ice melting fan 20 is stopped (point D). Since t2nd is equal to or less than the first reference time t1, the ice melting fan control unit 61 does not operate the ice melting fan 20, and does not operate the ice melting fan 20, the second operation being lower than the first operation start temperature T1. When the surface detection temperature T of the cooling fin decreases to the start temperature T2, the ice melting fan 20 is operated (point E).

If the evaluation time t1st is equal to or less than the first reference time t1 at the point C, the ice melting fan control unit 61 does not operate the ice melting fan 20 and the surface detection temperature T of the cooling fin is the second temperature. When the temperature decreases to the operation start temperature T2, the ice melting fan 20 is operated.
Thereafter, the same control as described above is performed until the operation start time Tn reaches each stage of the third operation start time T3, the fourth operation start time T4,.

  Further, as shown in FIG. 4, for example, after the surface detection temperature T of the cooling fin 12 reaches the fourth operation start temperature T4 (point F), the operation time of the dehumidifier 1 is a predetermined fifth allowable time t5max. If the surface detection temperature T of the cooling fin does not decrease to the fifth operation start temperature T5 despite the elapse of time, when the fifth allowable time t5max elapses (point G), the ice melting fan control unit 61 Then, a signal for starting the operation of the ice melting fan 20 is output, the ice melting fan 20 is operated for a predetermined time, and the ice on the cooling fins 12 is iced.

  Further, the viewpoint of preventing the condensed water defrosted by the operation of the ice melting fan 20 from being vaporized in the cooling fin cover, and the condensed water absorbed in the water guide member after the ice melting fan 20 is stopped are quickly frozen. From this point of view, it is preferable that the ice melting fan 20 be stopped within a range of the temperature of the dewed water defrosted by the operation of the ice melting fan 20 within a range of about 0 ° C to 3 ° C. Therefore, although the operation time of the ice melting fan 20 depends on the size and number of the cooling fins 12 of the dehumidifier 1, it is preferably 30 seconds to 2 minutes, for example. In this embodiment, it is 2 minutes. Although it can be used outside this numerical range, if the operation time of the ice melting fan 20 is too short, it may be difficult to sufficiently ice the ice that has frozen on the cooling fins 12. On the other hand, if the operation time is too long, the temperature of defrosted condensed water may exceed 3 ° C., and the defrosted condensed water may vaporize in the cooling fin cover. In addition, it is difficult to quickly freeze the condensed water absorbed by the water guide member.

  By repeating the cycle as described above, the temperature of the cooling fin 12 can be lowered stepwise while removing the ice on the cooling fin 12, and the indoor humidity can be efficiently removed even when the room temperature is low. Can be removed.

  When the indoor humidity detected by the humidity detector 56 reaches the set humidity, the dehumidifying operation control unit 60 appropriately outputs a dehumidifying operation start signal and a stop signal to the Peltier element 14 and the heat dissipation fan 19. Operates to maintain the room humidity at the set humidity.

  As mentioned above, although one Embodiment of this invention was described, the specific aspect of this invention is not limited to the said embodiment. For example, a box body having a U-shaped cross section is used as the cooling fin cover 13, but as shown in the cross sectional view of FIG. 5, the protruding portion 44 extending to the cooling fin 12 side is parallel to the surface 21 of the support plate 11. You may use the box provided in the upper part of a smooth surface. By using the cooling fin cover 13 having such a cross-sectional shape, the air that has flowed into the cooling fin cover 13 due to the operation of the ice melting fan 20 does not flow to the cooling fin 12 side, but is used for ice melting at the lower part of the cooling fin cover 13. Outflow from the air exhaust port 24 can be effectively prevented. As a result, the air supplied from the ice melting fan 20 can be reliably guided to the cooling fins 12, and the ice on the cooling fins 12 can be efficiently melted.

  Moreover, in this embodiment, although the water guide member 30 which consists of a moisture absorption raw material is inserted in the water guide path 16, if the condensed water can be reliably guided to the radiation fin 17, the structure will not be specifically limited. For example, the water guide path 16 may be inclined downward from the cooling fin 12 side to the heat radiating fin 17 side without inserting the water guide member 30.

  In the present embodiment, the heat radiating fan 19 is attached to a surface parallel to the support plate 11 of the radiating fin cover 18, but the vapor generated in the radiating fin cover 18 and the heat generated from the radiating fin are surely received. If it can discharge | release outside and the atmospheric | air pressure in the radiation fin 17 can be made low, the attachment position will not be specifically limited. For example, the outdoor air exhaust port 35 may be formed on the upper surface of the radiating fin cover 18 and the radiating fan 19 may be attached to the upper surface.

  In the present embodiment, each of the plurality of heat radiating fins 17 is formed in a pin shape. However, the heat radiated from the heat radiating portion 25 of the Peltier element 14 is surely radiated to the outside, and dew condensation water is discharged. The shape is not particularly limited as long as it can be surely vaporized. For example, the plurality of heat radiating fins 17 may be formed in a flat plate shape and disposed close to each other in the horizontal direction.

Further, in the control method of the dehumidifier 1 of the present embodiment, the ice thawing fan 20 is controlled based on the surface temperature of the cooling fins 12, but at an appropriate timing to defrost the condensed water frozen on the cooling fins 12. If it can be obtained, it may be controlled based on a temperature other than the surface temperature of the cooling fin 12. For example, the control may be performed based on the temperature in the vicinity of the cooling fin 12.

It is a section schematic lineblock diagram of a dehumidifier concerning one embodiment of the present invention. It is a block diagram for demonstrating the dehumidification control apparatus with which the dehumidifier which concerns on one Embodiment of this invention is integrated. It is a time chart example for demonstrating the control method of the dehumidifier which concerns on this invention. It is a time chart example for demonstrating the control method of the dehumidifier which concerns on this invention. It is a cross-sectional schematic block diagram which shows the other Example of the dehumidifier which concerns on this invention. It is a cross-sectional schematic block diagram which shows the conventional dehumidifier.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dehumidifier 11 Support plate 12 Cooling fin 13 Cooling fin cover 14 Peltier element 15 Heat transfer material 16 Water conduit 17 Radiating fin 18 Radiating fin cover 19 Heat dissipating fan 20 Ice melting fan 30 Water guiding member

Claims (6)

A support plate having a water conduit that penetrates the front and back surfaces;
Radiating fins and cooling fins provided on the front side and the back side of the support plate, respectively;
A Peltier element interposed between the heat radiating fin and the cooling fin,
By energizing the Peltier element, the back side of the support plate is cooled and dehumidified, and is configured to dissipate heat to the front side of the support plate.
Condensation water generated on the back side of the support plate is a dehumidifier guided to the front side of the support plate through the water conduit,
A dehumidifier comprising an ice melting fan that blows air toward the cooling fin.   The dehumidification according to claim 1, wherein a water guide member made of a moisture absorbing material is inserted into the water guide channel, and one end of the water guide member is thermally connected to the cooling fin. vessel. A heat dissipating fin cover that covers the heat dissipating fin; and a heat dissipating fan;
3. The dehumidifier according to claim 1, wherein the pressure inside the heat radiating fin cover is made negative with respect to the pressure on the back surface side of the support plate by suction operation of the heat radiating fan. A plurality of the cooling fins are provided, each of which is formed in a flat plate shape and is disposed adjacent to the horizontal direction,
The dehumidifier according to any one of claims 1 to 3, wherein the ice melting fan is mounted above the cooling fin. Temperature detecting means for detecting the temperature at or near the surface of the cooling fin;
The dehumidifier according to any one of claims 1 to 4, further comprising control means for controlling the operation of the ice melting fan based on the temperature detected by the temperature detection means. A method for controlling a dehumidifier according to any one of claims 1 to 5,
Detecting the temperature at or near the surface of the cooling fin after energization of the Peltier element by the temperature sensor;
Operating the ice-melting fan for a predetermined time when the detected temperature detected by the temperature sensor has decreased to a preset first operation start temperature;
Measuring an evaluation time from when the operation of the ice melting fan is started until the detected temperature is lowered to the first operation start temperature after the ice melting fan is stopped;
When the evaluation time is compared with a preset reference time, and when the evaluation time is equal to or longer than the reference time, the ice melting fan is operated, while the evaluation time is smaller than the reference time The dehumidifier further comprises a step of operating the ice melting fan when the detected temperature falls to a second operation start temperature set lower than the first operation start temperature. Control method.

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