JPS6041527A - Dehumidifier - Google Patents

Abstract

PURPOSE:To increase the dehumidifying effect by heat-insulating cooling fins, furnished to the cooling and the heating surface of a cooling element, and the fixing bolts of a radiating conductive plate from the heat conductive plate in a dehumidifier having an electronic cooling element utilizing the Peltier effect. CONSTITUTION:The air dehumidifier is constituted of an external case 1 and an internal case 2 consisting of the upper part 3 made of metal and a heat-insulating lower part 4. Electronic cooling elements 10a and 10b utilizing the Peltier effect are arranged at the lower part of the internal case. Cooling fins 11a and 11b are furnished to the cooling surface of the electronic cooling element, and heat conductive plates 9a and 9b to the heating surface. And a cooling passage 6 is formed between both cases 1 and 2, and a dehumidifying passage 5 on the cooling fins. The moisture-contg. external air is sucked by a fan 7, and the moisture in the external air is condensed and removed by the dehumidifying passage 5 and the cooling passage 6. In this case, clamp bolts 15 of the heat conductive plates 9a and 9b and the cooling fins 11a and 11b are heat-insulated by a heat- insulating washer 16 to prevent the conduction of the heat on the heating side to the cooling fin, and the dehumidifying effect is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dehumidifying Rg that utilizes the Beltier effect to fasten the cooling fins on the cooling surface of an electronic cooling element and the heat conductive plate for heat radiation on the hot surface using tightening bolts. The purpose is to prevent heat from the heat generating side from being transferred to the cooling fins by shutting off the fins and the bolts, thereby increasing thermal efficiency and dehumidifying effect.

In general, a dehumidifier that condenses and dehumidifies water using an electronic cooling element that utilizes the Beltier effect has cooling fins on the cooling surface on the heat absorption side of the electronic cooling element, and heat radiation fins on the heat generating surface on the heat radiation side via a heat conductive plate. The dehumidifying air is guided to the cooling fins and cooled.
Dehumidification is performed by partial condensing the water vapor contained in the air and discharging it as water.

By the way, in the dehumidifier, it is necessary to place the cooling fins and the heat conductive plate in close contact with the cooling surface and the heat generating surface of the electronic cooling element so as to connect them for heat conduction. Tightening bolts are used to tighten the plates together.

However, when the type of tightening bolt is made of resin pol 1-, the tightening force is weak and the cooling fins and heat conductive plate cannot be tightly attached to the electronic cooling element, and the tightening force f=
When the j pole 1- is a metal bo/L/I-, heat conduction occurs between the cooling fin and the heat conductive plate via the metal bolt, the heat of the heat conductive plate is transferred to the cooling fin, and the cooling effect on the cooling fin is There is a drawback that the dehumidifying ability decreases.

This invention has been made with the points mentioned in P] and the heat conductive plate are integrally fastened together by tightening bolts from the heat conductive plate side,
A heat insulating washer comprising a small diameter cylindrical part made of a cross-sectional β material, into which the threaded part of the tightening bolt loosely inserts and which passes through the mI heat conduction plate, and a large diameter cylindrical part into which the head of the tightening bolt loosely fits. The present invention provides a dehumidifier characterized in that the heat conductive plate and the tightening bolt are thermally isolated.

Therefore, according to the dehumidifier of the present invention, by tightening the cooling fins and the heat conductive plate with PgT heat washers and tightening bolts, there is heat insulation between the threaded part of the tightening bolt and the heat conductive plate. The small-diameter cylindrical portion of the washer provides heat isolation, and the large-diameter cylindrical portion of the heat insulating washer provides heat isolation between the head of the tightening bolt and the heat conductive plate. of·
Heat can be reliably shut off using heat insulating washers, and for this reason, the cooling fins and heat conductive plate can be attached closely to the electronic cooling element using metal bolts on the tightening bolts. , can prevent heat conduction between the cooling fins and the heat conductive plate, eliminating the conventional drawbacks,
It can enhance the dehumidification effect.

Next, the present invention will be explained in detail with reference to drawings showing one embodiment thereof.

In the drawings, (1) is a cylindrical outer cake in the vertical direction with a square cross section, and (2) is a cylindrical inner cake in the vertical direction with a square cross section, which is formed to have a smaller diameter than outer case 7 (1). , consists of an upper metal cylinder (3) with good heat conduction and a lower heat-insulating cylinder (4) made of a heat insulating material such as resin, glass, mica, etc., and consists of an outer cake (1) and an inner cake (2). )toga2
The upper end of the inner cake (2) is arranged lower than the upper end of the outer cake 7 (1), and the outer cake (1) is provided in a multi-tubular structure.
A suction air hood is formed in the upper part of the inner cake (2), and the heat insulating cylinder (4) of the inner cake (2) is guided downward from the lower end of the outer cake (1).

(5) is a dehumidification passage formed vertically inside the inner cake (2), and (6) is a dehumidification passage formed along the entire circumference between the inner peripheral surface of the outer cake (1) and the outer peripheral surface of the inner cake (2). "1 downwardly formed cooling passages (7) are provided in the upper part of the outer cake (1) and each passage (5), +6) has a first
A fan (8) forcibly forms an air flow from the bottom to the top as shown by the arrow in FIG.
) is a fan guard provided at the upper end of the

(9a) and (91) are provided inside the inner case 7 (2) facing each other downward, and their respective outer surfaces conduct heat to the left inner surface and right inner surface of the metal cylinder body (3). It is a bonded heat conductive plate, and the double-way heat plate (ga), (91'
) is formed shorter than the inner case 7 (2), and the heat conductive plate 1'
9a).

(The lower end of 91 is almost the same as the lower end of inner cake (2).
, (+010 is a two-way hot plate (ga), (9b) respectively
The heating surfaces are attached to the lower inner surfaces of the two-way heat plates (9a) and (9h), that is, the inner surfaces of the portions corresponding to the heat insulating cylinders (4), in a heat conductive manner.

(11a) and (11h) are sub-electronic cooling elements (101),
(loI) (7) A thermal conductor (1
2a), (12b) with cooling fins connected in a thermally conductive manner and arranged opposite to each other in the lower part of the dehumidification passage (5), said thermal conductor (12a).

(It is constructed of 121-piece aluminum, etc., and a freeze prevention switch is housed inside, and the heat conductors (+28) and (+2b) are heat conductive plates (9FL) and (9b
) and the cooling fins (lla) and (l11)). (18a).

(7311) is the sub-electronic cooling element (10a), (1011
) and the same thermal conductor (12a).

A heat conductive plate (9a) provided on the outer periphery of (+21>), (
9h) and the cooling fins (oa) and (11ri), respectively.
is both way hot plate (9a), (9b) 117) upper m inner I
The heat dissipating fins are heat-conductingly bonded to the fl surfaces and disposed facing each other in the center of the dehumidifying passageway (5).

0υI'iAs shown in Figure 3, fasten the heat conductive plate (91) and the cooling fins (Ill) from the heat conductive plate (91) side, and attach the heat conductive plate (91) to the heat generating surface of the electronic cooling element (+Ob). , cooling fins (111) are metal fastening bolts that are brought into close contact with the cooling surfaces of the electronic cooling elements (1 and 1) via thermal conductors (1211), and the heat conductive plate (9a) on the left side and the cooling fins (I Ia) also has the same tightening pole) (1
! 'D is used. Near 0 is a small diameter cylindrical part (16K) that is made of galanu-containing resin IJ and into which the screw part (+5X) of 1-0 clause is loosely inserted, and the head of the tightening pore l-Qυ (15, Y). It is a thermal washer consisting of a large diameter cylindrical part (16y) that fits loosely, and a small diameter cylindrical part (16X) of the insulation washer OQ.
is formed to have a length equal to the thickness of the heat conductive plate (ga) (9"). For example, as shown in FIG.
h), the small diameter cylindrical part (16X) of the heat insulating washer OQ is fitted from the right side, and then the tightening port θ threaded part r15X) is loosely inserted into the small diameter cylindrical part (16X), and the heat insulating material (+3
The head (153') of the tightening bolt 0υ is loosely fitted into the large diameter cylindrical part (+6y) of the heat insulating washer OQ.

01) is both electronic cooling elements (
10a), (roll) power supply transformer 7.08
) is a rectifier diode.

This is a power supply board that incorporates a power supply circuit such as a smoothing capacitor and a control circuit for the fan (7).
'7) is converted into direct current by the power supply circuit, and both electronic cooling elements (+Oa) and (Ioh) are driven by the direct current. The water tray (21) is installed below the inner γ-nu (2) and has a drain (A) formed therein, and the water tray (21) is set aside as the water tray 00 to reduce the humidity of the air flowing into the dehumidifying passage (5). When the humidity detected by the sensor (2) exceeds, for example, 90, the control circuit (7) of the power supply board (+8) is activated by 5 mechanisms.

Next, the operation of the above embodiment will be explained.

First, 70 power transformers are used to connect both electronic cooling elements (1
.

(+011), the electronic cooling element C1oa),
(Thermal conductor (12B) due to the temperature drop of each cooling surface.

(1211) through both cooling fees: / (Ila), (
III)) As the temperature of the thermoelectric cooling element (+Oa) and the heat generating surface of each of the two grooves (9a) rises, the temperature of the two-groove hot plate (9a) decreases.

(9b) is raised, and the heat conductive plates (9a) and (91
)) heat is connected to the inner case (2) joined to the top of each
) metal cylinder body (3) and both 'yi, heat fin ('+4
a), ('+410).

When the humidity detected by the humidity sensor (211K) is low, 90% or less, the fan (7) is in a stopped state, and in the dehumidification passageway (5), the air inside is dissipated by the heat radiation fins (1s).

The dehumidifying passage (5) is New air flows in from below. Therefore, this incoming air is first cooled by both cooling fins ma) and (nb), and the water vapor contained in the air condenses to water, and the water receptacle 0
On the other hand, the air from which moisture has been removed becomes dry air and moves upward to the radiating fins (
14a), (14b), metal cylinder +3), etc., and is discharged from the upper end of the inner case (2) to the outside through the upper part of the outer case (1).

In addition, in the cooling passage (6), the air inside is warmed by the heat from the outer surface of the metal cylinder (3), expands, and moves upward, so that the cooling passage (6) is also filled with fresh air from below. The incoming air is sequentially warmed by the metal cylindrical body (3), moves upward, and is discharged to the outside from the upper end of the outer case ().

In this way, at low humidity, both passages (5), +
In 6), a gentle air flow is generated from the bottom to the top due to the natural convection of the air, and dehumidification is performed by the natural convection operation.

Next, when the humidity is high (over 90%), the control circuit starts driving the fan (7), and as mentioned above, air flows from the bottom to the top in both passages (5) and [6]. Since this is forcibly generated, the amount of air flowing into each passage (5) and +61 increases significantly, promoting the blowing of air to the cooling surface and the air blowing to the heat radiation surface, and the dehumidifying operation described above rapidly progresses. ,
Dehumidifying power is achieved by forced convection operation.

By the way, for example, in the tightening part between the heat conductive plate (91) and the cooling fin (111) shown in FIG.
The heat is transferred to the cooling fins (1111) and it is cooled,
A large diameter cylinder in which the tightening bolt 0 and the heat conductive plate (91) on the heat generating side are thermally insulated by the heat insulating washer Of9, and the tightening bolt 0 yen head (+5y) is loosely fitted. Department (+6X)
In the case, the opening is located in the insulating cylinder (4) of the inner case (2).
), the heat of the heat conductive plate (91)) is not transferred to the cooling fin cIlb via the tightening plate (IED).

Therefore, according to the embodiment described in iJ, the heat conductive plate (9a).

(91)) and the cooling fins (lla) and Cl1b) can each be tightened with a tightening port 0υ via a heat insulating washer OQ, so a resin bolt with a weak tightening force is used for the tightening port 00. It is possible to use Kokichi Nagu metal bolts, eliminate the conventional drawbacks, and obtain the same effect as mentioned above.Moreover, the lower part of the inner cake (2) is constituted by a heat-insulating cylinder (4). Since the opening of the heat insulating washer OQ can be closed, heat isolation between the heat conductive plate (ga), (91)) and the tightening bolt θ frame becomes more reliable.

[Brief explanation of the drawing]

The drawings show one embodiment of the dehumidifier of the present invention, and FIGS. 1 and 2 are an overall cutaway front view and a cutaway side view, FIG. 3 is a cutaway front view of the main parts, and FIG. FIG. (ga), (9b) ・'・Heat conductor plate, ('+Oa), (
+0b)--Electronic cooling element, (Ua), (Making...
Cooling fin, θυ...Tightening bolt, (■5x)...
Threaded part, (153')...Head, OQ...Insulating washer, (16X)...Small diameter cylindrical part, (16Y)...Large diameter cylindrical part. Agent: Patent Attorney Ryuobu Fujita Figure 1 Figure 2

Claims (1)

[Claims] ■ Cooling of electronic cooling element using the Beltier effect [ni
Cooling fins and heat dissipation J11/
In a dehumidifier in which the cooling fins described in FNL and the heat conduction plate described in 6J are integrally tightened with tightening bolts from the side of the heat conduction plate, the dehumidifier is made of a heat insulating material and is made of a heat insulating material. A heat insulating washer consisting of a small diameter cylindrical part into which the threaded part of 611 is loosely inserted, and a small diameter cylindrical part into which the heat conductive plate is fitted, and a large diameter cylindrical part into which the σr1 part of the tightening bolt 1 is loosely fitted is provided. and the tightening bolt are thermally isolated.