JPH0632923U - Dehumidifying water discharge structure of electronic dehumidifier - Google Patents

Abstract

(57) [Summary] [Purpose] To accelerate the evaporation of dehumidified water. A heat generating surface of a thermoelectric module 11 is fixed to an inner surface of a heat radiating plate 4 fixed so as to close an opening 2 of a back wall 1a of a housing 1, and a cooling heat sink 12 is fixed to the heat absorbing surface. . A water receiver 13 is provided below the cooling heat sink 12, and a water drain hole 14 is formed in the heat dissipation plate 4 portion at the inner bottom surface position of the water receiver 13.
A heat radiation heat sink 15 is fixed to the outer surface of the heat radiation plate 4, and a container-shaped water absorbing body cover 17 is fixed to the heat radiation plate 4 portion below the heat radiation heat sink 15.
A water absorbing body 18 is housed inside 7. Water absorber cover 17
A large number of slits 19 are formed in the. A vertically long duct 20 whose upper and lower surfaces are open is fixed to the outer surface of the heat radiating plate 4 so as to cover the water absorber cover 17 and the heat radiating heat sink 15.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for discharging dehumidified water of an electronic dehumidifier.

[0002]

[Prior art]

 Small electronic dehumidifiers using thermoelectric modules are used in various storage and drying cabinets. Since storing dehumidified water in a tank or the like is cumbersome to manage, the dehumidified water has been vaporized outside (see Japanese Utility Model Publication No. 3-7924 or Japanese Utility Model Publication No. 3-86023).

The structure for discharging dehumidified water of these electronic dehumidifiers is as follows. Water condensed on the surface of the cooling heat sink, which is placed inside the storage and cooled by the thermoelectric module, is collected in the water receiver located below the cooling heat sink and is provided outside the storage through the drain hole. Guided by the water absorber. Since the water absorber is in contact with the heat sink or the housing and is heated, the dehumidified water in the water absorber evaporates from its surface.

[0004]

[Problems to be solved by the device]

 In the case of these evaporation structures of dehumidified water, if the dehumidification rate is higher than the evaporation rate at the outside, water may not be able to be absorbed in the water absorber and overflow. If water comes in contact with the water absorber, it may cause inconvenience to wet the walls and floors of storage rooms.

An object of the present invention is to increase the evaporation rate of dehumidification water of an electronic dehumidifier.

[0006]

[Means for Solving the Problems]

 The structure of the present invention is configured such that the condensed water condensed on the surface of the cooling body arranged inside the housing and connected to the heat absorption surface of the thermoelectric module is guided to the outside of the housing, and the water absorption body arranged outside the housing is introduced. In the dehumidified water discharge structure of the electronic dehumidifier that absorbs and evaporates water, the radiator that radiates the heat generated on the heat generating surface of the thermoelectric module and the water absorber are surrounded by ducts whose upper and lower surfaces are open. Characterize.

[0007]

[Action]

 The dehumidified water absorbed by the water absorber evaporates from the surface of the water absorber. At this time, the air in the duct is heated by the radiator and rises in temperature, and is guided to the duct and rises, so that convection is promoted by the stack effect, and evaporation of dehumidified water from the surface of the water absorber is promoted.

[0008]

【Example】

 1 shows an embodiment of the present invention, and is a partially cutaway sectional view showing a dehumidifying unit attached to a wall portion of a housing, FIG. 2 is a right side view of the dehumidifying unit of FIG. 1, and FIG. It is a left side view of a dehumidification unit.

A dehumidifying unit 3 is attached to an opening 2 formed in a back wall 1a of a housing 1 such as a storage cabinet. In the electronic dehumidifier 10 in the dehumidifying unit 3, the heat generating surface of the thermoelectric module 11 is in close contact with the inner surface of the heat radiating plate 4, the cooling heat sink 12 is in close contact with the heat absorbing surface of the thermoelectric module 11, and the cooling heat sink 12 is in contact with the heat radiating plate 4. It is fixed with a screw. The heat dissipation plate 4 is arranged outside the rear wall 1a so as to close the opening 2 of the rear wall 1a of the housing 1, and is fixed to the rear wall 1a with screws.

The cooling heat sink 12 has a large number of vertically oriented cooling fins 12 b protruding from the surface of the cooling plate 12 a. The upper end of the protruding end surface of the cooling fin 12 b is a vertical surface, but the lower part is obliquely downward. It has an inclined surface facing.

A water receiver 13 is arranged below the cooling heat sink 12 and fixed to the heat dissipation plate 4. The water receiver 13 is formed of a pair of side walls 13a and 13b and a front wall 13c arranged around the cooling heat sink 12, and a bottom wall 13d arranged below the cooling heat sink 12. Most of the upper portion of the front wall 13c is cut out so that the cooling heat sink 12 is exposed, and the bottom wall 13d is inclined downward from both sides toward the center portion in the left-right direction, and the entire heat radiation is performed. It inclines downward toward the plate 4. A water drain hole 14 is formed in the thickness direction in a portion of the heat radiating plate 4 corresponding to the center position of the inner bottom surface of the water receiver 13 in the left-right direction.

A heat dissipation heat sink 15 is fixed to the outer surface of the heat dissipation plate 4, and the heat dissipation heat sink 15 is arranged at a position facing the thermoelectric module 11.

An evaporation unit 16 of dehumidified water is arranged below the heat radiation heat sink 15. In the evaporation section 16 of the dehumidified water, a container-shaped water absorbent body cover 17 is fixed to the outer surface of the heat radiating plate 4 with its open side facing the heat radiating plate 4 side. The body 18 is stored. Since the water absorbent body cover 18 is arranged so as to cover the water draining hole 14 formed in the heat dissipation plate 4, the dehumidifying water passes through the water draining hole 14 and the water absorbent body 18 in the water absorber cover 17 is described later. Is absorbed by. A large number of slits 19 are formed in the water absorbent body cover 17 so that the dehumidified water absorbed by the water absorbent body 18 is evaporated and discharged to the outside.

A vertically long duct 20 having a U-shaped cross-section whose upper and lower surfaces are open is fixed to the outer surface of the heat radiating plate 4 so as to cover the water absorber cover 17 and the heat radiating heat sink 15. A power supply unit 21 is disposed and fixed beside the duct 20.

The operation of the electronic dehumidifier 10 will be described below. When the thermoelectric module 11 is energized from the power supply unit 21, the cooling heat sink 12 is cooled by the thermoelectric module 11, and when cooled to the dew point temperature or lower, the water vapor in the housing 1 is exposed on the surface of the cooling heat sink 12. Condensate. When the condensed water grows greatly, it drops by its own weight and falls on the water receiver 13, flows on the bottom surface of the water receiver 13 and is absorbed by the water absorber 18 through the water drain holes 14 formed in the heat dissipation plate 4.

The dehumidified water absorbed by the water absorbing body 18 evaporates from the surface of the water absorbing body 18 and evaporates to the outside from the slit 19 formed in the water absorbing body cover 17 that houses the water absorbing body 18. At this time, the water absorber 18 is heated by the heat dissipation plate 4 heated by the heat generating surface of the thermoelectric module 11, so that evaporation from the water absorber 18 is promoted. Furthermore, the air in the duct 20 is heated by the heat radiation heat sink 15 heated by the heat generating surface of the thermoelectric module 11 and rises in temperature, and is guided by the duct 20 to rise, so that convection is promoted by the stack effect. The evaporation of dehumidified water from the surface of the water absorbing body 18 is promoted.

The dehumidifying unit 3 was assembled in the test apparatus 50 shown in FIG. 4 and the effect of this example was confirmed. The test apparatus 50 has two chambers, a dehumidifying chamber 52 and a vaporizing chamber 53, which are partitioned by a central partition wall 51, and the dehumidifying unit 3 is attached to an opening 54 formed in the partition wall 51. . That is, the heat dissipation plate 4 of the dehumidifying unit 3 is attached to the opening 54 of the partition wall 51 so as to close the opening 54, the cooling heat sink 12 is arranged in the dehumidifying chamber 52, and the evaporation portion 16 of the dehumidifying water is evaporated. It is located in Hygrometers 55 and 56 are installed in the dehumidification chamber 52 and the evaporation chamber 53, respectively, and the humidity of the chambers 52 and 53 can be controlled by the humidity control devices 57 and 58.

The main dimensions of the dehumidifying unit 3 are as follows. Thermoelectric module: Current: 2A Voltage: 4V Cooling heat sink: Vertical: 40mm Horizontal: 98mm Fin height: 17mm Radiating heat sink: Vertical: 70mm Horizontal: 98mm Fin height: 22mm Radiating plate Thickness: 4mm Vertical: 333mm Horizontal: 225mm Dehumidification The chamber 52 and the evaporation chamber 53 are kept at a dehumidifying chamber temperature: 25 ° C., a dehumidifying chamber relative humidity: 45% RH, and an evaporation chamber temperature: 25 ° C.

In the case of the present embodiment, water did not splash from the water absorbing body 18 until the relative humidity of the evaporation chamber 53 reached 90%. However, it was confirmed that when the duct 20 surrounding the water absorber 18 and the heat radiation heat sink 15 was removed, the water overflowed from the water absorber 18 when the relative humidity of the evaporation chamber 53 was 80% or more.

5 to 8 show another embodiment of the present invention, FIG. 5 is a partially cutaway sectional view showing a dehumidifying unit attached to a wall portion of a housing, and FIG. 7 is a right side view of the dehumidifying unit of FIG. 7, and FIG. 7 is a left side view of the dehumidifying unit of FIG.

A dehumidifying unit 3A is attached to an opening 2 formed in a back wall 1a of a housing 1 such as a storage cabinet. In the electronic dehumidifier 30 of the dehumidifying unit 3A, the heat generating surface of the thermoelectric module 31 is in close contact with the inner surface of the heat radiating plate 4, and the cooling plate 32 is in close contact with the heat absorbing surface of the thermoelectric module 31. The heat dissipation plate 4 is arranged outside the rear wall 1a so as to close the opening 2 of the rear wall 1a of the housing 1, and is fixed to the rear wall 1a with screws.

A container-shaped heat sink cover 33 is fixed to the inner surface of the heat radiating plate 4 with the open side facing the heat radiating plate 4 and the cooling plate 32 is arranged in the heat sink cover 33. Has been done. A number of slits 34 are formed in the heat sink cover 33 to supply the air inside the housing 1 to the cooling plate 32. The heat sink cover 33 has a substantially rectangular shape when viewed from the front, the inner bottom surface is inclined downward toward the heat radiating plate 4 side, and the water drain hole is formed in the heat radiating plate 4 portion at the end position of the inner bottom surface. 35 is formed. The drain hole 35 is formed in a horizontally long shape along the bottom surface of the heat sink cover 33.

An evaporation unit 36 of dehumidified water is arranged on the outer surface of the heat dissipation plate 4. A container-shaped water absorbent body cover 37 is fixed to the outer surface of the heat radiating plate 4 with the open side facing the heat radiating plate 4 in the dehumidified water evaporating section 36. Is stored. Since the water absorbent body cover 37 is arranged so as to cover the water draining hole 35 formed in the heat dissipation plate 4, the dehumidified water passes through the water draining hole 35 and the water absorbent body 38 in the water absorbent body cover 37 is described later. Is absorbed by. The water absorbent body cover 37 is provided with a large number of slits 39 so that the dehumidified water absorbed by the water absorbent body 38 is evaporated and discharged to the outside.

A vertically long duct 40 having a U-shaped cross section with an open upper and lower surface is fixed to the outer surface of the heat radiating plate 4 so as to cover the water absorbent body cover 37 and the heat radiating plate 4 portion above it. A power supply unit 41 is arranged and fixed beside the duct 40.

The operation of the electronic dehumidifier 30 in this embodiment will be described below. When the thermoelectric module 31 is energized from the power supply section 41, the thermoelectric module 31 cools the cooling plate 32 and cools it to a temperature below the dew point temperature. Then, water vapor in the housing 1 is condensed on the surface of the cooling plate 32. When the condensed water grows greatly, it drops by its own weight and falls to the inner bottom surface of the heat sink cover 33, flows through the inner bottom surface and is absorbed by the water absorbing body 38 through the water drain holes 35 formed in the heat dissipation plate 4.

The dehumidified water absorbed by the water absorbing body 38 evaporates from the surface of the water absorbing body 38 and evaporates to the outside from the slit 39 formed in the water absorbing body cover 37 accommodating the water absorbing body 38. At this time, since the water absorbing body 38 is heated by the heat dissipation plate 4 heated by the heat generating surface of the thermoelectric module 31, evaporation from the water absorbing body 38 is promoted. Furthermore, the air in the duct 40 is heated by the heat dissipation plate 4 heated by the heat generating surface of the thermoelectric module 31 and rises in temperature, and is guided by the duct 40 to rise, so that convection is promoted by the stack effect. Thus, evaporation of dehumidified water from the surface of the water absorbing body 38 is promoted.

[0027]

[Effect of device]

 As described above, according to the present invention, the radiator in which the heat generated on the heat generating surface of the thermoelectric module and the water absorber are surrounded by the duct whose upper and lower surfaces are open, so that the air in the duct dissipates heat. Since the body heats it and raises its temperature, and it is guided to the duct and rises, convection is promoted by the stack effect and evaporation of dehumidified water from the surface of the water absorber is promoted.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view showing a dehumidifying unit mounted on a wall portion of a housing according to an embodiment of the present invention.

FIG. 2 is a right side view of the dehumidifying unit of FIG.

FIG. 3 is a left side view of the dehumidifying unit of FIG.

FIG. 4 is a cross-sectional view showing a state in which a dehumidifying unit is attached to the test apparatus.

FIG. 5 is a partially cutaway sectional view showing a dehumidifying unit attached to a wall portion of a housing according to another embodiment of the present invention.

FIG. 6 is a right side view of the dehumidifying unit of FIG.

FIG. 7 is a left side view of the dehumidifying unit of FIG.

[Explanation of symbols]

 1 Housing 1a Rear wall 2 Opening 3 3A Dehumidifying unit 4 Heat dissipation plate 10, 30 Electronic dehumidifier 11, 31 Thermoelectric module 12 Cooling heat sink 13 Water receiver 14, 35 Drain hole 15 Radiating heat sink 16, 36 Evaporating part of dehumidified water 17, 37 Water absorbing body cover 18, 38 Water absorbing body 19, 39 Slit 20, 40 Duct 21, 41 Power supply section 32 Cooling plate 33 Heat sink cover 34 Slit

Claims (3)

[Scope of utility model registration request] 1. Condensed water condensed on the surface of a cooling body arranged inside the housing and connected to a heat absorption surface of a thermoelectric module is guided to the outside of the housing, and the condensed water is introduced to the water absorbing body arranged outside the housing. In a dehumidified water discharge structure of an electronic dehumidifier that absorbs and evaporates water, a radiator that radiates heat generated on a heating surface of the thermoelectric module and the water absorber are surrounded by ducts whose upper and lower surfaces are open. The dehumidifying water discharge structure of the electronic dehumidifier. 2. The heat generating surface of the thermoelectric module is fixed to the inner surface of the housing, and the heat radiator is arranged above the water absorbing body and is fixed to the outer surface of the housing. The structure for discharging dehumidified water of the electronic dehumidifier according to 1. 3. The heat generating surface of the thermoelectric module is fixed to the inner surface of the housing, the housing wall to which the thermoelectric module is fixed forms a radiator, and the duct is located above the water absorbing body and the water absorbing body. The dehumidified water discharge structure for an electronic dehumidifier according to claim 1, wherein the dehumidified water surrounds a casing wall portion.