JP2011020082A - Dehumidifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dehumidifier that does not have an independent water discharge path for collecting and discharging condensed water generated therein to outside of its body, has a reduced number of parts, and can be manufactured at a reduced manufacturing cost. <P>SOLUTION: The dehumidifier 11 includes: a dehumidifying path for introducing air from outside and discharging the air dehumidified by a dehumidifying means 51 to outside; and a regeneration path for blowing regenerating air heated by a heating means 64 to the dehumidifying means 51 to evaporate moisture adsorbed by the dehumidifying means 51 to regenerate the same and for supplying the regenerating air having passed through the dehumidifying means 51 to a radiator 81 to condense and recover the moisture present in the regenerating air, wherein the regeneration path is constituted of a high-temperature air flow path 105 that guides high-temperature regenerating air having passed through the dehumidifying means 51 to the radiator 81 and of a low-temperature air flow path 106 that guides low-temperature regenerating air cooled by the radiator 81 to the heating means 64. Further, the dehumidifier 11 includes a water discharge path disposed on the bottom face 98 of the high-temperature air flow path 105 and the low-temperature air flow path 106. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a dehumidifier that dehumidifies external air with a dehumidification rotor and regenerates the dehumidification rotor by passing high-temperature regeneration air through the dehumidification rotor.

  In the dehumidifier, when the high-temperature regenerated air after regenerating the adsorbent and the dehumidifying rotor is cooled, condensed water is generated. Therefore, it is necessary to collect this condensed water and drain it outside the main body.

  For this reason, for example, in Patent Document 1, when the regenerated air after regenerating the adsorbent is cooled, the dew condensation water generated in the circulation air passage is led to the lowest point by using the own weight of the dew condensation water due to the downward gradient. A dehumidifier with a configuration for collecting water is described.

  In Patent Document 2, a drain van is provided below the cooling heat exchanger that cools the regenerated air after the dehumidification rotor is regenerated, and the condensed water falling in the pipe of the cooling heat exchanger is condensed. Dehumidifier to collect is described.

  However, in any of the dehumidifiers described in any of the above patent documents, in order to collect and drain the dew condensation water, an independent water collecting part is provided in the dehumidifier, so that the number of parts increases and the manufacturing cost increases. was there.

JP 2007-185657 A Japanese Patent No. 3445790

  The present invention has been made in view of the above-mentioned conventional problems. In order to collect condensed water generated in the dehumidifier and drain it outside the main body, an independent drainage passage is not provided, the number of parts is reduced, and the manufacturing cost is reduced. It is an object of the present invention to provide a dehumidifier that can be used.

As a means for solving the above problems, a dehumidifier according to the present invention is:
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. And a recovery passage for collecting
The regeneration passage includes a high-temperature air flow passage that guides the high-temperature regeneration air that has passed through the dehumidifying means to the radiator, and a low-temperature air flow passage that guides the low-temperature regeneration air cooled by the radiator to the heating means. In the dehumidifier
A drainage passage is provided on the bottom surface of the high temperature air flow passage and the low temperature air flow passage.

  With this configuration, since the drainage passage is provided on the bottom surface of the regeneration passage, it is not necessary to provide a separate drainage passage, and the number of parts of the dehumidifier can be reduced and the manufacturing cost can be reduced.

It is preferable that the high temperature air flow passage and the low temperature air flow passage are adjacent to each other through a partition wall.
As a result, the high-temperature regeneration air and the low-temperature regeneration air exchange heat through the partition wall, so that the high-temperature regeneration air before flowing into the radiator is cooled in advance and the low-temperature regeneration air before flowing into the heating means. Can be pre-warmed.

The drainage passage constitutes a drainage port provided at the lowest point of the high temperature air flow passage and the low temperature air flow passage, and a bottom surface of the high temperature air flow passage and the low temperature air flow passage, and the drainage port from below the radiator It is preferable to consist of the guide surface which goes to.
The condensed water can flow in the drainage passage, that is, the high-temperature air flow passage and the low-temperature air flow passage toward the drainage port by its own weight by the guide surface.

It is preferable that the guide surface rises along the flow of hot air in the hot air flow passage.
As a result, the high-temperature air flowing in the high-temperature air flow passage collides with the guide surface, and the dust contained in the high-temperature air adheres to the condensed water flowing on the guide surface, so that the dust in the high-temperature air can be removed. it can.

It is preferable that ribs protruding inward are alternately provided in the high-temperature air flow passage and the low-temperature air flow passage, and the partition wall meanders in an uneven shape so as to avoid the rib.
Accordingly, by increasing the moving distance of the regeneration air in the high-temperature air flow passage, dust contained in the regeneration air can be easily dropped by its own weight, and can be attached to the dew condensation water in the drainage passage, thereby removing the dust. . Further, by causing the regenerative air to meander, dust is also attached to the dew condensation water generated on the side walls or partition walls of the high temperature air flow passage and the low temperature air flow passage, thereby making it easier to remove.

It is preferable that the low temperature air flow passage is disposed on the upstream side of the dehumidification passage, and the high temperature air flow passage is disposed on the downstream side of the dehumidification passage.
Compared with the case where a high-temperature air flow passage is provided upstream of the dehumidification passage by disposing a low-temperature air flow passage closer to the temperature of the air in the dehumidification passage, the air and the low temperature The temperature difference with the regeneration air in the air flow passage can be made closer. Therefore, it is possible to prevent the heat of the regeneration air from being taken away by the air upstream of the dehumidifying passage.

  According to the present invention, since the drainage passage is integrally provided in the regeneration passage, it is not necessary to provide a separate drainage passage for draining the dew condensation water, and the number of parts of the dehumidifier is reduced and the manufacturing cost is reduced. Can do.

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 an expansion perspective view of the dehumidification rotor of the dehumidifier of FIG. It is an enlarged side view of the gear of the dehumidification rotor of FIG. It is sectional drawing which shows the detection hole of a gear of FIG. 6, and the state of a photo interrupter. It is a figure which shows an output signal when the photo interrupter of FIG. 7 detects the normal rotation of a dehumidification rotor. It is a figure which shows an output signal when the photo interrupter of FIG. 7 detects reverse rotation of a dehumidification rotor. 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 a partial expanded sectional view of the heater case of the dehumidifier of FIG. FIG. 5 is a cross-sectional view of the dehumidifier of FIG. 4 taken along line BB. It is the sectional view on the AA line of the radiator of the dehumidifier of FIG. It is sectional drawing which shows the positional relationship of the radiator and heat exchange part of the dehumidifier of FIG. It is a partially broken perspective view of the radiator of FIG. It is a perspective view which shows the heat exchange part of the dehumidifier of FIG. It is a plane sectional view showing a modification of the heat exchange part 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 and a regeneration 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 14.

  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.

  As shown in FIG. 5, the dehumidifying rotor 51 includes a rotor body 52 made of a disk-shaped adsorbent and a rotor holder 53 attached to the outer peripheral edge of the rotor body 52. A rotor bearing 54 having a through hole 54 a is bonded and fixed to the center of the rotor body 52. Since the outer periphery of the dehumidifying rotor 51 is supported by a rotation support member 58, which will be described later, there is no support rib that extends radially outward from the center in order to support its own weight around the axis. Therefore, the opening area of the dehumidification rotor 51 increases, and more air can be sucked.

  For the rotor main body 52, a ceramic honeycomb-like 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.

  A gear portion 55 is formed on the outer periphery of the rotor holder 53, and the gear portion 55 is provided with a detection hole 56 for detecting the rotation and rotation direction of the dehumidifying rotor 51, as shown in FIG. . This detection hole 56 is provided in each gear 55a asymmetrically with respect to a straight line extending from the center of the dehumidifying rotor 51 and passing through the center of each gear 55a. The detection hole 56 may be provided in a fan shape on the upstream side in the rotational direction of the dehumidifying rotor 51 of the gear 55a. Then, the detection hole 56 is detected as an output signal by a photo interrupter 57 which is a non-contact sensor composed of a light emitting element 57a and a light receiving element 57b (see FIG. 7), and the rotational operation of the dehumidifying rotor 51 is determined. When the dehumidification rotor 51 is rotating forward, the output signal of the photo interrupter 57 forms a waveform with a short detection time next to a waveform with a long detection time, as shown in FIG. On the other hand, when the dehumidifying rotor 51 rotates in the reverse direction, as shown in FIG. 9, each gear 55a forms a waveform with a long detection time next to a waveform with a short detection time. Thus, the rotation and rotation direction of the dehumidification rotor 51 can be detected from the output signal of the photo interrupter 57.

  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. 10, 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. The rotation support member 58 meshes with the gear portion 55 of the rotor holder 53 and rotates following the rotation of the dehumidifying rotor 51. Accordingly, the detection hole 56 may be provided in the rotation support member 58 as shown in FIG. 11 instead of the gear portion 55 of the rotor holder 53. As a result, the gear 55a of the rotor holder 53 that has been enlarged to provide the detection hole 56 can be reduced in size, so that the entire dehumidification rotor 51 can be reduced in size. 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 moisture adsorbed from the dehumidifying 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 rotor main body 51, a portion corresponding to the 1/8 region faces the heater case 6, and the remaining 7/8 region is opened to allow ventilation and is located in the dehumidifying passage.

  As shown in FIG. 12, the heater case 67 has an L-shaped heater reflector 71 and an upstream opening 72 located upstream in the rotational direction of the dehumidifying rotor 51 and a downstream side in the rotational direction of the dehumidifying rotor 51. And is divided into a downstream opening 73 located at the center. A heater 64 is disposed in the upstream opening 72 so as to face the dehumidification rotor 51, and a heating region 76 for supplying regenerated air heated to the dehumidification rotor 51 is formed. On the other hand, the heater 64 is not provided in the downstream opening 73, and a cooling region 77 for supplying the regenerated air blown from the sub fan 63 directly to the dehumidifying rotor 51 is formed. The dehumidifying rotor 51 passes through the cooling region 77 following the heating region 76 as indicated by the arrow. The heater reflector 71 is made of metal, and here, stainless steel 430 is used.

  Further, as shown in FIG. 13, a substantially circular mounting portion 74 is integrally formed on the heater case 67 so as to face the rotor bearing 54 provided at the center of the dehumidifying rotor 51. On the surface of the rotor cover 111 described later that faces the rotor bearing 54, a protruding portion 112 that extends through the through hole 54 a of the rotor bearing 54 and extends to the mounting portion 74 of the heater case 67 is provided. The mounting portion 74 of the heater case 67 and the protruding portion 112 of the rotor cover 111 are connected by the screw 113, so that the gap between the heater 64 and the dehumidifying rotor 51 is kept within a certain range based on the mounting portion 74. Can do. Thereby, the air leak from a reproduction | regeneration air path | route can be prevented, and the fall of a dehumidification capability can be prevented. Further, by supporting the gap between the heater 64 and the dehumidifying rotor 51 within a certain range, the gap between the heater 64 and the dehumidifying rotor 51 is narrowed, and the heater 64 can be prevented from contacting the dehumidifying rotor 51.

  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.

  The PTC heater is preferably disposed in the heater case 67 in a fan shape that spreads radially outward from the center of the dehumidifying rotor 51. However, as long as the dehumidification rotor 51 can be sufficiently heated, the rectangular shape along the radial direction may be used. When this rectangular PTC heater is used, the heating time per unit length on the inner circumferential side of the dehumidifying rotor 51 is longer, the heating time per unit length on the outer circumferential side of the dehumidifying rotor 51 is shorter, and the dehumidifying rotor 51 Cannot be heated uniformly. For this reason, it is effective to increase the watt density on the outer peripheral side, reduce the watt density on the inner peripheral side, or reduce the area of the heater opening on the inner peripheral side. Here, the watt density is a value obtained by dividing the heater capacity by the heater surface area, and means the wattage per unit area.

  As shown in FIG. 14, the radiator 81 includes a first radiator portion 82 into which heat from the heater 64 flows, and a second radiator portion 83 into which regenerated air once cooled by the first radiator portion 82 flows. The upper part of these two radiator parts 83 is comprised with the cover body 84 which is a sealing part which seals and communicates. The radiator 81 is attached to the rectangular cylindrical portion 45 of the main body 12 on the upper side of the opposite end portion of the heat exchanging portion 91, which will be described later, on which the sub fan 63 is disposed (see FIG. 15).

  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. 16, the plurality of pipes 85 are integrally joined to the radiator 81 by welding the upper end to a single flat plate-shaped upper plate 86 and the lower end to a single flat plate-shaped lower plate 87. 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.

  By configuring the radiator 81 with the two radiator portions 82 and 83, a sufficient surface area can be increased. Further, by forming the first radiator portion 82 from the pipe 85a having a large diameter, the dew condensation water 14 generated in the first radiator portion 82 can flow downward regardless of the flow of the regeneration air directed upward. It has become.

  As shown in FIG. 17, the heat exchanging portion 91 has a hollow tank shape, and an insertion port 93 through which the pipe 85 of the radiator 81 is inserted is formed in the upper wall 92 of the heat exchanging portion 91. The upper wall 92 opposite to the insertion port 93 is formed with an inlet 94 through which the high temperature air conveyance passage 105 and the rotor cover 111 are inserted, and the regenerated air is conveyed from the rotor cover 111 through the inlet 94 to the high temperature air. It flows into the passage 105. The partition wall 104 is bent at the end of the heat exchanging portion 91 on the inlet 94 side so that the regenerated air in the low-temperature air conveyance passage 106 is sucked into the sub fan 63 through the outlet 95 formed in the side wall 103. It has become. A drainage port 99 for draining the condensed water 14 from the radiator 81 is provided at the lowest point of the bottom wall 98 that forms the bottom surface of the heat exchanging portion 91, and the bottom wall 98 of the heat exchanging portion 91 is connected to the radiator 81. The guide surface 101 is a downward slope toward the drain port 99 from below, and the inclined surface 102 is directed to the drain port 99 from the end of the bottom wall 98 opposite to the guide surface 101. The side wall 103 of the heat exchange part 91 is formed so as to cover the end surfaces of the upper wall 92 and the bottom wall 98.

  The heat exchanging portion 91 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. As a result, the high temperature air flow passage 105 and the low temperature air flow passage 106 can exchange heat via the partition wall 104.

  The partition 104 is made of a metal having high thermal conductivity, and is made of, for example, aluminum. Further, since a plurality of irregularities 107 are formed on the side surface of the partition wall 104, by increasing the surface area of the partition wall 104 and generating turbulent flow in the high temperature air flow passage 105 and the low temperature air flow passage 106, Heat exchange can be promoted.

  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. As a result, the regeneration air flows vertically downward from the rotor cover 111 into the high-temperature air flow passage 105, passes through the high-temperature air flow passage 105, and flows out vertically upward into the first radiator section 82. That is, the regeneration air is conveyed in a substantially U shape. Accordingly, dust having a specific gravity greater than that of the regenerating air is also dropped by centrifugal force in addition to falling due to its own weight, and thus it is easy to adhere to the dew condensation water 14 flowing through the guide surface 101, and dust in the regenerating air is more reliably removed. can do.

  The guide surface 101 rises from the drain port 99 at a predetermined angle along the flow direction of the air conveyed through the high-temperature air flow passage 105. Therefore, the high temperature air in the high temperature air flow passage 105 collides with the guide surface 101 and the dust in the air easily adheres to the dew condensation water 14 flowing through the guide surface 101, so that the dust in the high temperature air is further removed. Can do.

  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.

  The low temperature air flow passage 106 is located on the upstream side of the dehumidification passage, and the high temperature air flow passage 105 is attached to the main body 12 so as to be located on the downstream side of the dehumidification passage. When the ambient air is sucked from the intake port 28, the air on the upstream side of the dehumidifying passage is also sucked from the lower side so that the air contacts the low-temperature air flow passage 106. Thereby, compared with the case where the high temperature air flow passage 105 is provided on the upstream side of the dehumidification passage, the temperature of the regeneration air is reduced by bringing the temperature difference between the air on the upstream side of the dehumidification passage and the regeneration air in the low temperature air flow passage 106 closer. It is possible to prevent the air from being taken away by the air upstream of the dehumidifying passage.

  Further, the guide surface 101 of the heat exchanging portion 91, that is, the bottom surfaces of the high temperature air flow passage 105 and the low temperature air flow passage 106 store not only the drainage of the dew condensation water 14 generated here but also the dew condensation water 14 generated by the radiator 81. It can be used as a drainage passage for draining into the tank 105. The drainage passage is constituted by a drainage port 99 and a guide surface 101. Condensed water 14 generated in the radiator 81 is dropped on the guide surface 101 and is drained toward the drain port 99 by its own weight due to the inclination of the guide surface 101. With this configuration, the drainage passage is provided integrally with the high-temperature air flow passage 105 and the low-temperature air flow passage 106, so there is no need to provide a drainage passage using separate parts or the like, reducing the number of parts of the dehumidifier 11 and reducing the manufacturing cost. can do.

  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 dehumidifying rotor 51, the support ribs are not provided on the front and back surfaces as described above, the opening area of the dehumidifying rotor 51 is increased, and more air can be sucked.

  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. The air sucked into the main fan 47 and passing through the radiator 81 is hereinafter referred to as cooling air.

  In the regeneration passage, the sub-fan 63 is driven to flow into the heater case 67. In the heater case 67, after being heated by the heater 64 by the heater reflector 71, the high-temperature regenerated air that passes through the dehumidification rotor 51 and the low-temperature regenerated air that passes through the dehumidification rotor 51 without passing through the heater 64 are used. Distributed.

  When the high-temperature regeneration air passes through the dehumidification rotor 51, the moisture adsorbed on the dehumidification rotor 51 is heated and evaporated. When the low-temperature regeneration air passes through the dehumidification rotor 51, the heated dehumidification rotor 51 is cooled, thereby preventing the heat of the dehumidification rotor 51 from joining the dehumidification passage and being discharged outside the apparatus.

  The high-temperature and low-temperature regeneration air that has passed through the dehumidification rotor 51 flows into the high-temperature air flow passage 105 of the heat exchange unit 91 via the rotor cover 111. Since the hot air flow passage 105 is long in the lateral direction, the moving distance of the regeneration air becomes long. Therefore, the dust contained in the regeneration air can be easily dropped by its own weight, and can be attached to the dew condensation water 14 generated on the bottom wall 98 to remove the dust in the regeneration air. Further, the regenerated air in the high-temperature air flow passage 105 collides with the guide surface 101, and the dust in the regenerated air easily adheres to the condensed water 14 flowing through the guide surface 101, so that the dust can be further removed. The regenerative air moves in the rotor cover 111 vertically downward, moves in the high-temperature air flow passage 105 in a substantially horizontal direction, and moves the first radiator portion 82 vertically upward. As a result, the regenerated air is transported in a substantially U-shape, so that dust having a specific gravity greater than that of the regenerated air falls due to centrifugal force in addition to dripping due to its own weight, and thus adheres to the condensed water 14 flowing on the guide surface 101. In addition, dust in the regeneration air can be more reliably removed.

  The regenerated air that has passed through the high-temperature air flow passage 105 flows into the first radiator section 82 and is conveyed upward in the pipe 85a. When the regeneration air passes through the first radiator section 82, the regeneration air is cooled by heat exchange due to a temperature difference between the regeneration air and the cooling air passing through the radiator 81, and moisture contained in the regeneration air is condensed. The condensed water 14 is drained from the radiator 81 to the drainage passage of the heat exchanging portion 91 and is collected from the drainage port 99 to the water storage tank 15. With this configuration, since the drainage passage is provided integrally with the bottom wall 98, it is not necessary to provide a drainage passage using another part or the like, and the number of parts of the dehumidifier 11 can be reduced and the manufacturing cost can be reduced. 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 14 which generate | occur | produces in the pipe 85a, conveying regenerated air upwards, is It can be led to the lower end and drained.

  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. Specifically, the regeneration air in the second radiator 83, that is, the regeneration air that has been cooled, exchanges heat with the upstream side of the cooling air, so that the temperature of the regeneration air in the radiator 81 is further lowered to reduce the temperature of the radiator 81. The cooling performance can be improved.

  Further, in the heat exchanging portion 91, the regeneration air flows in the opposite direction through the partition wall 104 in the high temperature air flow passage 105 and the low temperature air flow passage 106. Heat exchange can be performed with the regenerated air. Thereby, the high temperature regeneration air before flowing into the radiator 81 can be cooled in advance, and the low temperature regeneration air before flowing into the heater 64 can be preheated.

  The regeneration air that has flowed out of 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.

  With respect to the heat exchanging portion 91, as shown in FIG. 18, a plurality of ribs 106 projecting inward may be provided on the side wall 103, and the partition wall 104 may meander in an uneven shape according to the shape of the rib 106. Accordingly, by increasing the moving distance of the regeneration air in the high-temperature air flow passage 105, dust contained in the regeneration air can be easily dropped by its own weight, and adhered to the dew condensation water 14 in the drain passage to remove the dust. Can do. Further, by causing the regenerative air to meander, dust is also attached to the dew condensation water 14 generated on the side wall 103 or the partition wall 104 of the high temperature air flow passage 105 and the low temperature air flow passage 106, thereby making it easier to remove.

11 Dehumidifier 14 Dew condensation water 21 Casing 51 Dehumidification rotor (dehumidification means)
64 Heater (heating means)
81 Radiator 99 Drain port 101 Guide surface 105 High-temperature air flow passage 106 Low-temperature air flow passage 108 Rib

Claims (6)

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. And a recovery passage for collecting
The regeneration passage includes a high-temperature air flow passage that guides the high-temperature regeneration air that has passed through the dehumidifying means to the radiator, and a low-temperature air flow passage that guides the low-temperature regeneration air cooled by the radiator to the heating means. In the dehumidifier
A dehumidifier characterized in that a drainage passage is provided on the bottom surface of the high temperature air flow passage and the low temperature air flow passage.   The dehumidifier according to claim 1, wherein the high-temperature air flow passage and the low-temperature air flow passage are adjacent to each other via a partition wall.   The drainage passage constitutes a drainage port provided at the lowest point of the high temperature air flow passage and the low temperature air flow passage, and a bottom surface of the high temperature air flow passage and the low temperature air flow passage, and the drainage port from below the radiator The dehumidifier according to claim 1, wherein the dehumidifier is formed of a guide surface facing toward the surface.   The dehumidifier according to claim 3, wherein the guide surface rises along a flow of high-temperature air in the high-temperature air flow passage.   The ribs protruding inward are alternately provided in the high-temperature air flow passage and the low-temperature air flow passage, and the partition is meandered in an uneven shape so as to avoid the rib. 4. The dehumidifier according to any one of 4.   The dehumidifier according to any one of claims 1 to 5, wherein the low-temperature air flow passage is disposed upstream of the dehumidification passage, and the high-temperature air flow passage is disposed downstream of the dehumidification passage.

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