KR20040016050A - Rotary dehumidifier apparatus dehumidifying method - Google Patents

Abstract

The present invention relates to a dehumidifying apparatus and a dehumidifying method, and more particularly, to an adsorption or absorption dehumidifying method. The present invention is a casing in which a dehumidifying region and a regenerating region are formed in a circumferential direction, and a dehumidifying agent is impregnated or coated. A rotor rotatably installed in a rehumidification area and a regeneration area inside the casing; a regeneration air supply device connected to the casing to supply air for regeneration of a dehumidifying agent to the regeneration area; and a dehumidification area to the dehumidification area connected to the casing. A processing fluid supply device for supplying a processing fluid for processing, and regeneration means for regenerating the dehumidifying agent which is installed in the regeneration zone and directly heats only a portion of the rotor in the regeneration zone to pass through the regeneration zone. It provides a dehumidifier.

Description

Rotary dehumidifier and dehumidification method {ROTARY DEHUMIDIFIER APPARATUS DEHUMIDIFYING METHOD}

The present invention relates to a dehumidifying apparatus and a dehumidifying method in more detail relates to an adsorption or absorption type dehumidifying method.

As a dehumidification method which removes moisture of air, it is classified into cooling type, compression type, adsorption type, absorption type, and the like.

Cooling dehumidification is a method of lowering the surface temperature below the dew point of air to condense moisture on the surface. Cooling dehumidification is a method that is useful when cooling and dehumidification at the same time in summer, there is a problem that can not obtain low dew point air due to the condensation (結露) phenomenon of the surface.

Compression type dehumidification method uses the phenomenon that when the air is compressed, the moisture in the air is also compressed and the moisture above the saturated steam pressure is condensed. However, the compression type dehumidification method requires excessive power, and is not used except for special applications.

Adsorption-type dehumidification is a method of adsorbing moisture to the surface by capillary force and surface tension using an adsorbent such as silica gel and activated carbon. Heating the adsorbent releases moisture, allowing regeneration. In the absorption type dehumidification method, dehumidification is carried out by chemical reaction between an absorbent such as lithium chloride, triethylene glycol, and water. Absorbent dehumidification is classified into wet and dry, in which the absorbent is in the liquid state and in the dry, the absorbent is in the solid state.

Adsorption or absorption dehumidification is widely used because it has the advantage of being able to obtain low dew point air and to treat a lot of plunder with a small device. However, the power consumed by the heating of the air has a lot of problems.

1 is a block diagram showing the configuration of a conventional rotary dehumidifier.

As one of the conventional adsorption / absorption dehumidifiers, the conventional rotary dehumidifier has a circular casing 10 having a dehumidification region 6 and a regeneration region 4 in the circumferential direction, as shown in FIG. (Adsorbent or absorbent) impregnated, the rotor 8 rotatably installed in the regeneration zone 4 and the dehumidification zone 6 in the casing 10, and a process for removing moisture in the dehumidification zone 6; And a treatment air supply device 3 for supplying air, and a regeneration air supply device 2 for supplying hot air for regeneration to the regeneration area 4.

The dehumidifier has a low water partial pressure when the ambient temperature is low, and a high water partial pressure when the ambient temperature is high. Dehumidifiers therefore absorb and release moisture, depending on the ambient temperature.

The regeneration air supply device 2 and the processing air supply device 3 are generally installed opposite to each other with the rotor 8 interposed therebetween.

The regeneration air supply device 2 supplies hot air for regeneration of the portion in the regeneration area 4 of the rotor 8 and includes an electric heater (not shown) to heat the air. .

Arrow 1 shown in FIG. 1 represents the flow of regenerated air, 5 represents the flow of treated air, and 7 represents the rotation direction of the rotor.

Referring to the operation of the conventional rotary dehumidifier having the configuration as described above are as follows.

As the rotor 8 rotates at a constant speed, the dehumidification region 6 passes through the processing air for removing moisture from the processing air supply device 3, and the processing air is dehumidified by the dehumidifying agent impregnated in the rotor 8. Water is absorbed and discharged into the dry air. At this time, the part of the dehumidification area 6 by the rotation of the rotor 8 is moved to the regeneration area 4, the moisture absorbed by the dehumidifier in the dehumidification process is the regeneration area 4 from the regeneration air supply device (2). It is released to the outside by the hot air passing through).

That is, in the conventional rotary dehumidifier, each part of the rotor 8 alternately passes through the dehumidification area 6 and the regeneration area 4 by rotation to perform a dehumidification process to continuously remove moisture.

In the conventional rotary dehumidifier, the air is heated by using an electric heater to supply high temperature air, and the air is supplied to the regeneration area 4. In particular, the air must be raised to about 140 ° C. for a smooth regeneration process. Due to the limited heat transfer area and time between the rotor 8 and the air, efficient heat exchange does not occur and high temperature air is discharged to the outside. Will result.

In addition, due to the heat of adsorption due to the adsorption of the rotor 8 of the heat and moisture transferred by the rotation and conduction of the rotor 8 from the regeneration region 4 to the dehumidification region 6, the temperature of the treated air rises. There is a need for additional cooling device 9, there is a problem that additional power for cooling is required.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a dehumidifying apparatus and a dehumidifying method capable of reducing the power required in the dehumidification and regeneration process and efficiently dehumidifying.

1 is a block diagram showing the configuration of a conventional rotary dehumidifier.

Figure 2 is a block diagram showing the configuration of a dehumidifier according to the present invention.

3 is a configuration diagram showing the configuration of the regeneration means of the dehumidifier of FIG.

***** Explanation of symbols for main parts of drawing *****

12: regenerative air supply device 13: treated air supply device

14: playback area 16: dehumidification area

18 rotor 19 cooling device

21: rotating shaft 22: first electrode

23: second electrode 24: power supply device

25: insulation member

The present invention was created in order to achieve the object of the present invention as described above, the dehumidifying apparatus according to the present invention is a casing formed with a dehumidification area and a regeneration area in the circumferential direction therein, the dehumidifier is impregnated or coated, the inside of the casing A rotor rotatably installed in the rehumidification area and the regeneration area of the regeneration area, a regeneration air supply device connected to the casing to supply air for regeneration of the dehumidifying agent to the regeneration area, and a dehumidification process to the dehumidification area connected to the casing. And a regeneration means for regenerating the dehumidifying agent passing through the regeneration zone by directly heating only a portion of the rotor in the regeneration zone, the process fluid supply device for supplying a processing fluid for the regeneration zone. It features.

In addition, the present invention is a dehumidification step of passing the dehumidifying process fluid for dehumidification by impregnating or coated with a dehumidifying part, and dehumidifying part by generating heat and passing air by applying electric energy to the dehumidifying part after the dehumidification process. It provides a dehumidifying method comprising a dehumidifying step of regenerating the dehumidifying unit by removing the moisture absorbed in the.

Hereinafter, with reference to the accompanying drawings, a dehumidifying apparatus and a dehumidifying method according to the present invention will be described in detail.

Figure 2 is a block diagram showing the configuration of a dehumidifier according to the present invention.

As shown in FIG. 2, the dehumidifying apparatus according to the present invention includes a casing (not shown) in which the regeneration region 14 and the dehumidification region 16 are formed in the circumferential direction, and the regeneration region is impregnated or coated with a dehumidifying agent. The rotor 18 rotatably provided in the 14 and the dehumidification zone 16 and the portion of the rotor 18 provided in the regeneration zone 14 are directly heated, and the regeneration zone ( And regeneration means for regenerating the dehumidifying agent by regeneration air passing through 14).

The casing has a cylindrical inner space, and the regeneration area 14 and the dehumidification area 16 are formed in the circumferential direction around the rotation shaft 21.

In addition, a regeneration air supply device 12 for supplying regeneration air to the regeneration area 14 and a process air supply device 13 for supplying process air to the dehumidification area 16 may include the rotor 18. When facing each other with the interposed between the casing is installed. In addition to air for dehumidification, other fluids containing moisture are also possible.

In addition, since the processed air passes through the dehumidification zone 16 and passes through the regeneration zone 14, the heated air is heated by the heat of the heated rotor 18 to increase the temperature. Thus, a cooling device 19 for cooling to an appropriate temperature is provided. ) Is connected to the casing and installed.

The rotor 18 is installed inside the casing so as to be rotatable in the regeneration region and the dehumidification region inside the casing, and rotates at a low speed (about 5 to 25 rph in the embodiment of the present invention; 5 to 25 revolutions per hour). .

In addition, the rotor 18 is a member impregnated or coated with a dehumidifying agent (adsorbent or absorbent) such as silica gel, lithium chloride or activated carbon, and its internal structure has a honeycomb (honeycomb) structure to increase the surface area per unit volume. . In particular, the rotor 18 is made of a heat generating member that generates heat by application of electricity while having electrical conductivity such as a metal or a ceramic heater.

3 is a configuration diagram showing the configuration of the regeneration means of the dehumidifier of FIG.

As shown in FIG. 3, the regeneration means applies a power source to directly heat only a portion of the rotor 18 corresponding to the regeneration area 14. The first electrode is provided on the rotating shaft 21 of the rotor 18. The second electrode 23 and the first electrode 22, which are in sliding contact with the outer circumferential surface belonging to the regeneration region 14 among the outer circumferential surfaces of the rotor 18 and the rotor 18, are electrically connected to the rotor 18. ) And a power supply device 24 for connecting the second electrode 23. In particular, the first electrode 22 may be integrally installed with the rotation shaft 21 of the rotor 18.

The regeneration means has a plurality of insulating members 25 installed in the radial direction of the rotor 18 at regular intervals in the circumferential direction such that only a portion of the rotor 18 in the regeneration region 14 is electrically connected. Include. The rotor 18 is prevented from conducting electricity in the dehumidification area 16 other than the regeneration area 14 by the insulating member 25.

In addition, the power supply device 24 experimentally supplies a power supply capable of generating heat suitable for regeneration of the dehumidifying agent of the rotor 18.

Here, reference numeral 11 denotes the flow direction of regenerated air, 15 denotes the flow direction of the treated air, and 17 denotes the rotation direction of the rotor.

On the other hand, the dehumidifier according to the present invention has been described with respect to the rotary dehumidifier, in the dehumidification apparatus using a dehumidifier using a member impregnated with a dehumidifying agent in the case of adsorption or absorption type dehumidifier is usually in the technical field to which the present invention belongs. Modifications and adaptations are possible by the efforts of those skilled in the art.

Referring to the operation of the dehumidifier according to the present invention having the structure as described above in detail.

When the operation of the dehumidifier is started, the rotor 18 is rotated in the dehumidification area 14 and the dehumidification area 16 in the casing at low speed. By rotating the rotor 18, each part of the rotor 18 passes through the regeneration region 14 and the dehumidification region 16 alternately.

In the regeneration region 14, power is applied by the power supply device 24 through the first electrode 22 and the second electrode 23 together with the rotation of the rotor 18. As a result, heat is generated in the portion of the rotor 18 in the regeneration region 14. With the generation of heat, the moisture partial pressure of the dehumidifying agent impregnated or coated in the rotor 18 is increased, and the absorbed moisture is discharged to the surroundings and discharged to the outside by the regeneration air. Here, the rotor is prevented from passing electricity in the dehumidification region 16 by a plurality of insulating members 25 installed radially at regular intervals in the circumferential direction.

In the dehumidification region 16, the process air is passed along with the rotation of the rotor 18, and the moisture of the process air is absorbed by the dehumidifying agent passing through the regeneration region 14. The treated air passing through the dehumidification area is cooled to an appropriate temperature via the cooling device 19.

On the other hand, in order to confirm the effect of the dehumidifying apparatus and the dehumidifying method according to the present invention was carried out experiments and numerical analysis in comparison with the conventional dehumidifying apparatus, the results are shown in Table 1.

Here, the air volume of the treated air was 588 m 3 / h, the air volume of the regenerated air was 196 m 3 / h, and the diameter of the rotor was 400 mm. And the performance coefficient of the cooler was set to 2.5. The total power required also depends on the heating amount of the electric heater and the power of the cooler.

Conventional (air heating method) Invention Process air inlet temperature (℃) 25 25 Process air inlet absolute humidity (g / kg) 10 10 Process air outlet temperature (℃) 48 36.2 Treated air outlet absolute humidity (g / kg) 3.77 3.77 Regenerative air inlet temperature (℃) 140 25 Regenerative Air Inlet Absolute Humidity (g / kg) 10 10 Regenerative air outlet temperature (℃) 70.3 45 Regenerated air outlet absolute humidity (g / kg) 28.7 28.7 Heating amount of electric heater (kW) 7.53 3.00 Cooling amount of the chiller (kW) 4.52 2.20 Power of the chiller (kW) 1.81 0.88 Total power (kW) 9.34 3.88

As shown in Table 1, in order to achieve the same dehumidification effect, the conventional dehumidifier (air heating type) requires 7.53 kW of power required for the electric heater and 1.81 kW of power of the cooler. In contrast, the dehumidifier according to the present invention requires 3.00 kW of power required for the electric heater and 0.88 kW of power of the cooler.

Accordingly, the power of the electric heater was reduced by 60.2%, the power of the cooler by 51.4%, and by 58.5% in terms of the total power required.

The dehumidifier and the dehumidification method according to the present invention provide a regeneration means capable of directly heating and regenerating the dehumidifying unit in the regeneration area, and can be regenerated by using less energy than the conventional dehumidification device, thereby reducing the required energy. There is this.

In addition, the dehumidifier and the dehumidification method according to the present invention has the advantage that the temperature of the rotor passed through the regeneration zone is lowered to reduce the amount of cooling for cooling the air after the dehumidification process can be efficiently dehumidification treatment with less energy .

Claims (6)

A casing having a dehumidification area and a regeneration area formed in the circumferential direction therein; A rotor impregnated or coated with a dehumidifying agent and rotatably installed in the rehumidifying area and the regenerating area inside the casing; A regeneration air supply device connected to the casing and supplying air for regeneration of a dehumidifying agent to the regeneration area; A processing fluid supply device connected to the casing for supplying a processing fluid for dehumidification to the dehumidification area; And a regeneration means for regenerating the dehumidifying agent which is installed in the regeneration zone and directly heats only a portion of the rotor in the regeneration zone to pass through the regeneration zone. The method of claim 1, And the regeneration area is heated by electric energy. The method according to claim 1 or 2, The regeneration means includes a first electrode provided on the rotation shaft of the rotor, A second electrode slidably contacting the outer circumferential surface corresponding to the regeneration area of the rotor to be electrically connected to the rotor; And a power supply device for supplying power by connecting the first electrode and the second electrode. The method of claim 3, The rotor is a rotary dehumidifier characterized in that the insulating member is installed for electrically insulating in the circumferential direction at regular intervals. The method of claim 1, The rotor is a rotary dehumidifier characterized in that the heat generating member for generating heat by electrical energy. A dehumidifying step of dehumidifying the processing fluid for dehumidification by passing the dehumidifying agent impregnated or coated with a dehumidifying part; And a dehumidifying step of generating heat by applying electrical energy to the dehumidifying part after the dehumidification process and passing air to remove moisture absorbed by the dehumidifying part to regenerate the dehumidifying part.