JP2011025191A - Dehumidifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dehumidifier equipped with a radiator capable of sufficiently cooling a fluid to be condensed. <P>SOLUTION: The dehumidifier 11 includes: a dehumidifying passage for fetching air from the outside, dehumidifying the fetched air by a dehumidifying means 51 and discharging the dehumidified air to the outside; a regenerating passage for blowing the regenerating air heated by a heating means 64 in the dehumidifying means 51 to evaporate the moisture adsorbed on the dehumidifying means 51 and regenerate the dehumidifying means 51 and supplying the regenerating air passing through the dehumidifying means 51 to the radiator 81 to condense the moisture in the regenerating air and recover the condensed water; and a cooling passage for fetching air from the outside and cooling the radiator 81 with the fetched air. The radiator 81 comprises a plurality of pipes 85a, 85b and has a high-temperature radiator part 82 through which the high-temperature regenerating air is made to pass and a low-temperature radiator 83 through which the regenerating air which is made to pass through the high-temperature radiator part 82 and turned back is made to pass. The high-temperature radiator part 82 is arranged on the downstream side of the cooling passage and the low-temperature radiator part 83 is arranged on the upstream side of the cooling passage. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a dehumidifier having a radiator that condenses and cools high-temperature air generated to regenerate a dehumidification rotor.

  Conventionally, a dehumidifier having various radiators has been proposed.

  For example, in Patent Document 1, a fluid to be condensed taken into a radiator from a fluid to be condensed introduction portion moves in one direction along a fluid to be condensed passage pipe provided in the vertical direction, and is discharged to a lower discharging portion. A dehumidifier equipped with a radiator that is cooled by blowing air from a dehumidifying fan until it reaches is described.

  Patent Document 2 includes a radiator that performs heat exchange with the air passing through the pipe and cools it while the regeneration air flows downward in the pipe joined between the upper mounting plate and the lower mounting plate. Dehumidifier is described.

  However, in any dehumidifier equipped with the radiator described in any patent document, the fluid to be condensed is cooled until the fluid to be condensed is taken in from the upper fluid to be condensed and reaches the lower discharging portion. Since it is necessary to condense, there is a problem that the fluid to be condensed may not be sufficiently cooled.

Japanese Patent No. 3947301 JP 2003-329377 A

  This invention is made | formed in view of the said conventional problem, and makes it a subject to provide the dehumidifier provided with the radiator which can fully cool a to-be-condensed fluid.

The present invention includes a dehumidifying passage that takes in air from the outside, dehumidifies it by a dehumidifying means, and discharges it to the outside.
The regeneration air heated by the heating means is blown out to the dehumidification means, the moisture adsorbed on the dehumidification means is evaporated and regenerated, and the regeneration air that has passed through the dehumidification means is supplied to the radiator to condense the moisture in the regeneration air. A recovery passage to be collected,
A cooling passage for taking in air from outside and cooling the radiator;
The radiator is composed of a plurality of pipes, and includes a high-temperature radiator section through which high-temperature regeneration air passes, and a low-temperature radiator section through which regeneration air that has passed through the high-temperature radiator section and passed back passes. Machine,
The high-temperature radiator is disposed on the downstream side of the cooling passage, and the low-temperature radiator is disposed on the upstream side of the cooling passage.

  As a result, the regenerated air that has passed through the high-temperature radiator section and turned back flows into the low-temperature radiator section, and exchanges heat with the upstream cooling air. Therefore, the regenerated air that has been cooled by the high-temperature radiator section exchanges heat with the upstream-side cooling air, so that the regenerative air temperature in the radiator can be further lowered to improve the cooling performance of the radiator.

In the radiator, it is preferable that communication portions are provided at both ends of the plurality of pipes, and the regeneration air is folded back at least once by a partition plate disposed in the communication portions.
Thus, the regenerative air can be folded back at least once only by providing the partition plate, so that the structure of the radiator can be simplified. In addition, by folding the regenerated air at least once, the number of times that the regenerated air flowing in the radiator exchanges heat with the air in the cooling passage can be increased, and the cooling performance can be improved.

It is preferable that the diameter of the pipe constituting the high-temperature radiator is larger than the diameter of the pipe constituting the low-temperature radiator.
Thereby, since the cross-sectional area of the pipe which comprises the high temperature radiator part becomes large, the dew condensation water which generate | occur | produces in a pipe can be guide | induced to the lower end of a pipe, and can be dripped, conveying regeneration air upwards.

It is preferable that the radiator is disposed so as to be close to the heating unit and overlap a part of the dehumidifying unit.
As a result, when the dehumidifying means is rotated from the radiator toward the heating means, the air taken from outside passes through the dehumidifying means via the radiator on the upstream side of the heating means in the rotation direction of the dehumidifying means. Air that has become hot due to the exchange passes through the dehumidifying means. Further, on the downstream side of the dehumidifying means rotation direction from the heating means, the air taken from the outside directly passes through the dehumidifying means. Therefore, the temperature of the low temperature dehumidifying means is increased before passing through the heating means, and the high temperature dehumidifying means is cooled earlier after passing through the heating means, so that the dehumidifying efficiency of the dehumidifying means can be improved.

  Further, when the dehumidifying means is rotated from the heating means toward the radiator, the dehumidified air passes through the radiator and is heated by exchanging heat, and then passes through the dehumidifying means after being heated by the heating means. Therefore, the cooling of the dehumidifying means heated by the heating means can be delayed, and the adsorption start time of the dehumidifying means that adsorbs moisture in the air only below a certain temperature is delayed. Therefore, the amount of dehumidification can be reduced by reducing the amount of moisture adsorbed to the dehumidifying means.

  According to the present invention, the regenerated air that has been cooled performs heat exchange with the upstream cooling air, so that the regenerative air temperature in the radiator can be further lowered to improve the cooling performance of the radiator.

It is a partial fracture perspective view of a dehumidifier concerning the present invention. FIG. 2 is a partially broken perspective view of the dehumidifier viewed from the opposite direction to FIG. 1. It is a perspective view of the partition member of the dehumidifier of FIG. It is a perspective view of the partition member seen from the direction opposite to FIG. It is a front view which shows the state which attached the dehumidification rotor to the dehumidifier of FIG. It is a figure which shows schematically the reproduction | regeneration channel | path of the dehumidifier of FIG. It is the sectional view on the AA line of the radiator of the dehumidifier of FIG. FIG. 8 is a partially broken perspective view of the radiator of FIG. 7. It is a perspective view which shows the dehumidifier which has arrange | positioned the radiator of FIG. 1 on the dehumidification rotor. It is a plane sectional view showing a modification of the radiator of FIG. (A) is the elements on larger scale which show the modification of the pipe which comprises the radiator of FIG. 7, (b) is the elements on larger scale which show the further modification of (a). It is a partial expanded sectional view which shows the state which attaches the pipe of FIG. 11 to a lower board. It is a partial expanded sectional view which shows the modification of the lower board which attaches the pipe of FIG.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows a dehumidifier 11 according to an embodiment of the present invention. The dehumidifier 11 includes a dehumidifying passage, a regeneration passage, and a cooling passage inside the main body 12.

  The main body 12 is obtained by dividing the internal space of a substantially rectangular parallelepiped casing 21 into two front and rear portions by a partition member 41.

  The casing 21 includes a front cover 22 disposed on the upstream side of the dehumidifying passage, a rear cover 23 disposed on the downstream side of the dehumidifying passage, and a top cover 24 disposed on the upper portion thereof.

  On the front surface of the front cover 22, an air inlet 28 made up of a plurality of slits for taking air into the dehumidifier 11 is formed.

  As shown in FIG. 2, a lattice-shaped exhaust port 33 for discharging the air inside the dehumidifier 11 to the outside is formed on the upper surface of the rear cover 23.

  The top cover 24 has a substantially rectangular parallelepiped shape, and a recess 36 reaching the exhaust port 33 of the rear cover 23 is formed on the top surface. An opening / closing plate 38 is rotatably attached to a support shaft 37 on the front cover 22 side of the recess 36. The direction in which the air inside the dehumidifier 11 is exhausted to the outside can be adjusted by rotating the opening / closing plate 38 and disposing it at a predetermined position.

  As shown in FIGS. 3 and 4, the partition member 41 is formed with a circular opening 44 and a rectangular tube portion 45 that is adjacent to the circular opening 44 and is provided so that air can blow through. . A separation wall 46 is provided below the circular opening 44 and the rectangular tube portion 45, and a heat exchanging portion 91, which will be described later, is disposed above the separation wall 46. Is provided with a water storage tank 15 for collecting condensed water.

  A main fan 47 is accommodated on the rear side of the partition member 41. An involute passage 49 for guiding the blown air to the exhaust port 33 is formed around the blowout port 48 of the main fan 47.

  The dehumidification passage is a passage from the intake port 28 to the exhaust port 33, and a dehumidification rotor 51 that adsorbs moisture in the air and a main fan 47 are disposed in the middle.

  For the rotor body 52 of the dehumidifying rotor 51, a ceramic honeycomb adsorbent combined with zeolite, silica gel or the like is used. For example, a dehumidifying rotor having a low heat-resistant temperature (for example, 300 ° C. to 400 ° C.) is used as the adsorbent. The dehumidifying rotor having a low heat-resistant temperature is regenerated at a low temperature such as 200 ° C. to 300 ° C. Therefore, it is possible to reduce the amount of heat generated by the heater 64, which is a heating means for heating and regenerating the rotor body 52, to reduce the power consumption of the dehumidifier 11, and to appropriately control the temperature of the heater 64.

  Further, the dehumidifying rotor 51 is disposed in the circular opening 44 of the partition member 41, and is supported by two rotation support members 58 provided at two locations as shown in FIG. 5, via a drive gear 59a provided at one location. The dehumidification rotor 51 rotates around the center.

  The rotation support member 58 is disposed below the center of the circular opening 44 of the partition member 41 and along the periphery of the circular opening 44 of the partition member 41 so as to support the dehumidification rotor 51. Here, a gear that meshes with the rotor holder 53 and rotates is employed as the rotation support member 58. However, the rotation support member 58 may be a roller as long as it can support the dehumidification rotor 51.

  The drive gear 59 a is fixed to the rotating shaft of the dehumidifying rotor drive motor 59. The dehumidifying rotor drive motor 59 is disposed above the center of the circular opening 44 of the partition member 41 and is disposed along the periphery of the circular opening 44 of the partition member 41 between the dehumidification rotor 51 and a radiator 81 described later. It is installed.

  The main fan 47 is a known sirocco fan.

  The regeneration passage is a passage for removing water adsorbed from the dehumidification rotor 51 and regenerating it, and constitutes a closed loop shown in FIG. In the middle of the regeneration path, a heater unit 61, a radiator 81, and a heat exchanging portion 91 that communicates the heater unit 61 and the radiator 81 are provided. Hereinafter, the air flowing in the regeneration passage is referred to as regeneration air.

  As shown in FIG. 4, the heater unit 61 includes a unit main body 62, a sub fan 63 provided at one end of the unit main body 62, and a heater 64 provided at the other end of the unit main body 62. Yes.

  The unit main body 62 includes a fan case 66 in which the sub fan 63 is disposed, and a hollow rectangular parallelepiped heater case 67 provided along the radial direction of the dehumidifying rotor 51.

  The sub fan 63 is a known sirocco fan, and sucks the regenerated air in the heat exchanging portion 91 and blows it out into the heater unit 61 to circulate the air in the closed loop.

  The heater case 67 faces the surface of the dehumidification rotor 51 from the periphery to the center of the dehumidification rotor 51 and is disposed at a predetermined interval in the radial direction. Of the surface of the dehumidifying rotor 51, a portion corresponding to the 1/8 region faces the heater case 67, and the remaining 7/8 region is open so as to allow ventilation and is located in the dehumidifying passage.

  The heater 64 heats the air passing through the upstream opening 72 and supplies it to the dehumidification rotor 51, and directly heats the dehumidification rotor 51. Thereby, the water | moisture content adsorbed by the dehumidification rotor 51 can be evaporated, and the adsorption | suction capability of the dehumidification rotor 51 can be recovered.

  Here, as described above, a low temperature regeneration type dehumidification rotor that regenerates at a low temperature such as 200 ° C. to 300 ° C. is used as the dehumidification rotor 51. Thereby, the manufacturing cost of the dehumidifier 11 can be reduced. Since this low temperature regeneration type dehumidification rotor has low adsorption speed and adsorption performance of the dehumidification element, it is necessary to ensure a wide adsorption area. Therefore, as the heater 64 used here, in order to reduce the area occupied by the heater, a PTC heater which is a small heater that has high heat dissipation performance and can be operated even at a high watt density is used.

  The PTC heater generates heat by power supplied from a power source (not shown). The PTC heater is made of a semiconductor ceramic mainly composed of barium titanate (BaTi03). If the temperature of the heater increases, the resistance value is increased to suppress the amount of heat generated. For this reason, the PTC heater does not reach a high temperature, and the low temperature regeneration type dehumidification rotor having low heat resistance can be used.

  As shown in FIG. 7, the radiator 81 includes a first radiator 82 that is a high-temperature radiator into which heat from the heater 64 flows, and a low temperature at which regeneration air that has been once cooled by the first radiator 82 flows. The second radiator 83, which is a general radiator, and the lid 84, which is a communicating portion that seals and communicates the upper ends of the two radiators 82, 83, are configured. The radiator 81 is attached to the rectangular cylindrical portion 45 of the main body 12.

  Each radiator part 82 and 83 is comprised from the some pipe 85 (85a, 85b) which consists of synthetic resin materials, such as polyethylene and a polypropylene. The first radiator portion 82 is constituted by a pipe 85a having a large diameter, and the second radiator portion 83 is constituted by a pipe 85b having a small diameter. As shown in FIG. 8, the plurality of pipes 85 are integrally attached to the radiator 81 by being welded to one flat plate upper plate 86 at the upper end and one flat plate lower plate 87 at the lower end. It is composed. The lower end of the first radiator section 82 communicates with a high temperature air flow passage 105 of a heat exchange section 91 described later, and the lower end of the second radiator section 83 communicates with a low temperature air flow passage 106 of a heat exchange section 91 described later. Yes. The lid 84 is a hollow rectangular parallelepiped with one surface open, and is screwed to the upper plate 86. Accordingly, the regenerative air in the radiator 81 passes from the high-temperature air flow passage 105 through the first radiator 82 that conveys the regenerative air upward, is folded back by the lid 84, and the second radiator that conveys the regenerative air downward. It flows into the part 83 and is conveyed to the low temperature air flow passage 106.

  As shown in FIG. 3, the heat exchanging portion 91 has a hollow tank shape, and is attached below the dehumidifying rotor 51 and the radiator 81 of the main body 12 and above the separation wall 46. Inside the heat exchanging portion 91, a partition wall 104 having the same shape as the side wall 103, a high temperature air flow passage 105 that conveys high temperature air that has passed through the dehumidification rotor 51 from the heater 64 to the radiator 81, and a low temperature that is cooled by the radiator 81. The air is divided into a low-temperature air flow passage 106 that conveys the air to the heating unit 64. The partition wall 104 is made of a metal having high thermal conductivity, and is made of, for example, aluminum.

  One end of the high-temperature air flow passage 105 is opposed to the heater case 67 via the dehumidification rotor 51 and communicates with the rotor cover 111 extending so as to retreat from the surface area of the dehumidification rotor 51, and the other end is The first radiator portion 82 communicates with the first horizontal plane 94. Therefore, the high-temperature regeneration air is conveyed in the direction of the arrow in FIG.

  One end of the low-temperature air flow passage 106 communicates with the second radiator portion 83, and the other end communicates with the heater unit 61. Therefore, the low temperature regeneration air is conveyed in the direction of the arrow in FIG.

  Condensed water generated in the radiator 81 drops on the bottom surface of the heat exchanging portion 91 and is drained by its own weight toward the drain port 99 (see FIG. 6) due to the inclination of the bottom surface.

  Next, the dehumidifying operation of the dehumidifier 11 according to the present embodiment will be specifically described.

  When the main fan 47 is driven, the ambient air sucked from the intake port 28 flows toward the dehumidification rotor 51 side and the radiator 81 side which are dehumidification passages.

  In the dehumidifying passage, when the air sucked from the intake port 28 passes through the dehumidifying rotor 51, the contained moisture is adsorbed. Thus, the dried air flows through the involute passage 49 and is discharged into the room from the exhaust port 33 of the rear cover 23.

  In the radiator 81, the air sucked from the intake port 28 passes through the first radiator section 82 and the second radiator section 83 in the same manner as described above, exchanges heat with the regenerated air flowing in these radiators 81, and regenerates. Cool the air. Hereinafter, the air sucked into the main fan 47 and passing through the radiator 81 is referred to as cooling air, and the passage through which this cooling air passes is referred to as a cooling passage.

  In the regeneration passage, the regeneration air that has flowed into the heater case 67 by driving the sub fan 63 is heated by the heater 64 in the heater case 67 and then passes through the dehumidifying rotor 51.

  When the high-temperature regeneration air passes through the dehumidification rotor 51, the moisture adsorbed on the dehumidification rotor 51 is heated and evaporated. The regenerated air that has passed through the dehumidifying rotor 51 moves vertically down the rotor cover 111 and flows into the first radiator 82 through the high-temperature air flow passage 105.

  The regeneration air that has flowed into the first radiator 82 is conveyed upward in the pipe 85a. When the regeneration air passes through the first radiator 82, the regeneration air is cooled by heat exchange due to a temperature difference with the cooling air passing through the radiator 81, and moisture contained in the regeneration air is condensed. The condensed water is dropped from the radiator 81 onto the bottom surface of the heat exchange unit 91, flows to the drain port 99, and is collected in the water storage tank 15. Moreover, since the diameter of the pipe 85a which comprises the 1st radiator part 82 is large, ie, the cross-sectional area of the pipe 85a becomes large, the dew condensation water which generate | occur | produces in the pipe 85a while conveying regeneration air upwards is made to the lower end of the pipe 85a. Can lead to and drain.

  The regeneration air that has flowed out of the first radiator section 82 is folded back by the lid 84 and flows into the second radiator section 83 to exchange heat with the cooling air on the upstream side. Specifically, the regeneration air in the second radiator 83, that is, the regeneration air that has been cooled, exchanges heat with the upstream cooling air, so that the temperature of the regeneration air in the radiator 81 is further reduced to reduce the temperature of the radiator 81. The cooling performance can be improved.

  The regeneration air that has flowed out of the second radiator 83 and flowed into the low-temperature air flow passage 106 is supplied again toward the heater case 67 by the sub fan 63.

  The present invention is not limited to the above embodiment, and various modifications can be made.

  As shown in FIG. 9, the radiator 81 may be installed so as to overlap a part of the surface of the dehumidifying rotor 51. Specifically, the radiator 81 is installed so as to be adjacent to the rotor cover 111 and overlaps substantially half of the surface of the dehumidifying rotor 51.

  As a result, when the dehumidifying rotor 51 is rotated in the direction of arrow B, the air taken in from the intake port 28 passes through the dehumidifying rotor 51 via the radiator 81 on the upstream side of the heater 64 in the rotational direction of the dehumidifying rotor 51. The air that has become hot due to heat exchange with the air passes through the dehumidifying rotor 51. In addition, on the downstream side in the rotational direction of the dehumidification rotor 51 with respect to the heater 64, the air taken in from the intake port 28 directly passes through the dehumidification rotor 51. Therefore, the temperature of the low-temperature dehumidification rotor 51 is increased before passing through the heater 64, and the high-temperature dehumidification rotor 51 is cooled more quickly after passing through the heater 64, so that the dehumidification efficiency of the dehumidification rotor 51 can be improved.

  Further, when the dehumidifying rotor 51 is rotated in the direction of arrow C, the dehumidified air passes through the radiator 81 and is heated by exchanging heat, and then passes through the dehumidifying rotor 51 after being heated by the heater 64. Therefore, the cooling of the dehumidification rotor 51 heated by the heater 64 can be delayed, and the adsorption start time of the dehumidification rotor 51 that adsorbs moisture in the air only at a certain temperature or less is delayed. Therefore, the amount of dehumidification can be intentionally reduced by reducing the amount of moisture adsorbed on the dehumidification rotor 51.

  With the above configuration, it is possible to select whether to reduce the amount of dehumidification or to improve the dehumidification efficiency simply by changing the rotation direction of the dehumidification rotor 51, so there is no need to switch the heater 64 in multiple stages, The score can be reduced. Further, when the amount of dehumidification is reduced, the amount of condensed water generated in the radiator 81 is reduced, and the latent heat of evaporation imparted to the regeneration air is reduced, so that the temperature rise at the radiator outlet can be reduced.

  Next, as shown in FIG. 10, the radiator 81 can be configured by four radiator sections 121 (122, 123, 124, 125). The radiator 81 includes four radiator sections 121, a lid body 126 that seals and communicates with the upper ends of the four radiator sections 121, a bottom body 127 that seals and communicates with the lower ends of the four radiator sections 121, and a rectangular flat plate. And a partition plate 128.

  A partition groove 132 is provided between the second radiator portion 123 and the third radiator portion 124 on the upper surface 131 of the lid body 126 and the upper plate 86 of the radiator portion 121 so as to face each other. The inside of the lid body 126 is partitioned into a first upper passage 133 and a second upper passage 134 by fitting a partition plate 128 into the partitioning recess 132.

  The bottom body 127 is screwed to the lower plate 87 so that the lower ends of the four radiator portions 121 are sealed and communicated. The lower surface 135 and the lower plate 87 of the bottom body 127 are disposed between the first radiator section 122 and the second radiator section 123 and between the third radiator section 124 and the fourth radiator section 125 so as to face each other in the same manner as the lid body 126. A partitioning recess 132 is provided on the side. The inside of the bottom body 127 is connected to the first lower passage 136 communicating with the high-temperature air flow passage 105 and the lower ends of the second radiator portion 123 and the third radiator portion 124 by fitting the partition plate 128 into the partitioning recess 132. The second lower passage 137 and the third lower passage 138 communicating with the low-temperature air flow passage 106 are partitioned.

  The regenerated air in the radiator 81 passes from the first lower passage 136 through the first radiator 122 that guides the regenerated air upward, is folded back by the first upper passage 133, and is guided to the second regenerative air downward. It flows into the radiator section 123. Then, the regeneration air that has flowed out from the lower end of the second radiator portion 123 is folded back in the second lower passage 137 and flows into the third radiator portion 124 that guides the regeneration air upward. Next, the regeneration air that has flowed out of the third radiator section 124 is folded back in the second upper passage 134, flows through the fourth radiator section 125 that guides the regeneration air downward, and reaches the third lower passage 138. As a result, by refolding the regeneration air three times, the number of times that the regeneration air flowing in the radiator 81 exchanges heat with the cooling air can be increased, and the cooling performance can be enhanced.

  Further, since the regenerated air can be circulated and circulated in the plurality of radiator portions 121 only by providing the partition plate 128, the configuration of the radiator 81 can be simplified.

  In the above-described embodiment, the lower end of the pipe 85 is formed at a right angle to the axis. However, as shown in FIG. 11, the lower end of the pipe 139 is inclined with respect to the axis such as an acute notch or a V shape. You may form in. As a result, the contact area between the dew condensation water and the inner peripheral surface of the pipe 139 becomes smaller at the lower end of the pipe 139, so that dew condensation water tends to drip from the lower end of the pipe 139.

  In this case, the lower end of the pipe 139 cannot be welded to the lower plate 87. Therefore, as shown in FIG. 12, the radiator 121 is attached to the lower plate 87 by inserting the lower end of the pipe 139 into the through hole 142 of the elastic sheet 141 such as silicon rubber formed smaller than the outer diameter of the pipe 139. A configuration of fixing while improving airtightness can also be adopted.

  Further, as shown in FIG. 13, by increasing the thickness L of the lower plate 87 that is in close contact with the lower end portion of the pipe 139, the pressure loss of the gap between the pipe 139 and the through hole 142 of the lower plate 87 is increased, and the air The structure which improves the airtightness in the radiator 81 by preventing the leakage of the above can also be adopted.

  Furthermore, if polypropylene is used as the material of the pipe 139, a water repellent effect can be obtained. Further, if a silicon water repellent or a fluorine water repellent is added or applied to the inner peripheral surface of the pipe 139, a higher water repellent effect can be obtained. For example, when 5% of a silicon-based additive is added, the falling weight of condensed water adhering to the inner peripheral surface can be reduced by about 30%. As a result, the contact area between the inner peripheral surface of the pipe 139 and the water droplets of condensed water is reduced, and the surface tension acting between the inner peripheral surface and the water droplets is also reduced. Start to fall down. Therefore, the area of the water droplets of condensed water occupying the inner peripheral area of the pipe 139 becomes small, so that the regenerated air easily passes through the pipe 139. Since the condensed water easily falls in the pipe 139, a water film is formed and stays at the lower end of the pipe 139 to prevent the regeneration air from passing. Can be prevented.

  As another example, by applying a hydrophilic effect to the inner peripheral surface of the pipe 139 by, for example, applying a fluorine-based hydrophilic agent to the inner peripheral surface of the pipe 139, the condensed water easily falls in the pipe 139. Become.

11 Dehumidifier 51 Dehumidification rotor (dehumidification means)
64 Heater (heating means)
81 Radiator 82 First radiator (high-temperature radiator)
83 Second radiator (low temperature radiator)
84 Lid (Communication part)
85 Pipe 122 First radiator (high-temperature radiator)
125 4th radiator (low temperature radiator)
126 Lid (Communication part)
127 Bottom body (communication part)
128 Partition plate (partition member)
139 Pipe

Claims (4)

A dehumidifying passage that takes in air from the outside, dehumidifies it with dehumidifying means, and discharges it to the outside;
The regeneration air heated by the heating means is blown out to the dehumidification means, the moisture adsorbed on the dehumidification means is evaporated and regenerated, and the regeneration air that has passed through the dehumidification means is supplied to the radiator to condense the moisture in the regeneration air. A recovery passage to be collected,
A cooling passage for taking in air from outside and cooling the radiator;
The radiator is composed of a plurality of pipes, and includes a high-temperature radiator section through which high-temperature regeneration air passes, and a dehumidification section having a low-temperature radiator section through which regeneration air after passing through the high-temperature radiator section passes. Machine,
The dehumidifier according to claim 1, wherein the high-temperature radiator portion is disposed on the downstream side of the cooling passage, and the low-temperature radiator portion is disposed on the upstream side of the cooling passage.   2. The dehumidifier according to claim 1, wherein the radiator is provided with communication portions at both ends of the plurality of pipes, and the regeneration air is folded back at least once by a partition member disposed in the communication portions.   The dehumidifier according to claim 1 or 2, wherein a diameter of a pipe constituting the high-temperature radiator section is made larger than a diameter of a pipe constituting the low-temperature radiator section.   The dehumidifier according to any one of claims 1 to 3, wherein the radiator is disposed so as to be close to the heating unit and overlap a part of the dehumidifying unit.

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