JPH1047705A - Dehumidifying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dehumidifying apparatus without wasting high humidity air once produced in a body, which prevents the amount of humididfication from being lowered owing to the migration of air in a gap between a humidifying rotor and the body. SOLUTION: There are provided a first fan 4 which sucks air to be dehumidified into a body 1, feeds the air to a rotatable humidifying rotor 9 after passage through one passage 6a of a sensible heat exchanger 6 and exhausting the air dehumidified in the humidifying rotor 9 to the outside of the body 1, a second fan 5 which sends air heated by a heater 16 to the humidifying rotor 9 and evaporates water in the humidifying rotor for regeneration of the humidifying rotor 9 and which in turn sends a humidified air to the other passage 6c of the sensible heat exchanger 6 and then causes the sensible heat exchanger 6 to produce dew condensation and thereafter circulates the air to the humidifying rotor 9 after passage through the heater 16, and means for recovering due condensation water condensed in the sensible heat exchanger 6. Hereby, there are prevented the air dehumidified across the humidifying rotor 9 and the high humidity air produced by regenerating the humidifying rotor from being mixed to hereby increase the amount of dehumidification.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifying device which can be installed without requiring duct piping work.

[0002]

2. Description of the Related Art As a conventional dehumidifying device for dehumidifying moisture in the air, there is, for example, a device filed in Japanese Patent Application No. Hei 6-324015.

As shown in FIGS. 1 and 2, the dehumidifying device of this application uses a fan a to remove a part of the air to be dehumidified into a main body b, and to rotatably provide a moisture absorbing rotor c in the main body b. To the outside of the main body b after the moisture absorption by the moisture absorption rotor c, and the rest of the intake air passes through one of the passages f of the sensible heat exchanger e provided in the main body b via the heater g to the moisture absorption rotor c. Regenerate the moisture absorption rotor c by sending,
The dehumidified air is sent to the other passage h of the sensible heat exchanger e to cause dew condensation to occur in the sensible heat exchanger e, and the dew water is collected. .

[0004]

However, the above conventional dehumidifier has the following problems.

(Problem 1) In the dehumidifier using the moisture absorbing rotor c, the humid air generated during heating and regeneration of the moisture absorbing rotor c is cooled by the air around the main body b in the passage h of the sensible heat exchanger e. Therefore, the air temperature at the outlet of the passage h is slightly higher than the ambient temperature and the relative humidity thereof is 100%, and the air at the outlet of the passage h contains more moisture than the surrounding air of the main body b. In.

Therefore, if the air cooled by the sensible heat exchanger e is directly discharged to the outside of the main body b as in the dehumidifier of the above-mentioned application, the dehumidification efficiency is not good, and the high-humidity air is not discharged. Even if the air is sucked and reused from the fan a, the high-humidity air is mixed and diluted with the air around the main body b by the fan a, so that the dehumidifying efficiency cannot be improved.

(Problem 2) The dehumidifier of the above application has four chambers around the moisture absorbing rotor c, and it is practically difficult to completely seal the space between these chambers. In particular, in the method in which the moisture absorbing rotor c is automatically rotated by its own weight, a gap is required between the moisture absorbing rotor c and the main body b because the rotating force generated in the moisture absorbing rotor c is weak.

Further, in the dehumidifying device of the above-mentioned application, the air sucked by the fan a is divided into two and sent to the moisture absorbing rotor c and the sensible heat exchanger e. The pressure at the inlet f of the passage e is almost the same, and the pressure is higher than that around the body b. Sensible heat exchanger e
The air that has flowed into the passage f in this order sequentially passes through the heater g, the passage i of the moisture absorbing rotor c, and the passage h of the sensible heat exchanger e, and the pressure decreases. Become. Therefore, the pressure at the outlet of the passage i of the moisture absorbing rotor c is lower than the inlet of the passage k of the moisture absorbing rotor c. For this reason, the air near the entrance of the passage k of the moisture absorbing rotor c flows to the exit of the passage i of the moisture absorbing rotor c, and the high humidity air generated in the body of the moisture absorbing rotor c decreases in both temperature and humidity, and the amount of dehumidification also decreases. is there.

Further, since the air that has flowed out of the passage k of the moisture absorbing rotor c is immediately exhausted to the outside of the main body b, the pressure near the exit of the passage k of the moisture absorbing rotor c is substantially equal to the pressure outside the main body b. Therefore, the pressure at the inlet of the passage i of the moisture absorbing rotor c is higher than that at the outlet of the passage k of the moisture absorbing rotor c. Therefore, the moisture absorbing rotor c
A part of the air heated by the heater g near the entrance of the passage i flows to the exit of the passage k of the moisture absorption rotor c, and the amount of humid air generated in the moisture absorption rotor c decreases and the amount of dehumidification also decreases. There is.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and does not waste high-humidity air once generated in the main body, and moves air in the gap between the hygroscopic rotor and the main body. It is an object of the present invention to provide a dehumidifier that does not cause a decrease in the amount of dehumidification.

[0011]

In order to achieve the above object, according to the first aspect of the present invention, air to be dehumidified is sucked into a main body, and the air is rotated through one passage of a sensible heat exchanger. A first fan that sends the air to the free moisture absorbing rotor and discharges the air dehumidified by the moisture absorbing rotor to the outside of the main body; A second fan that regenerates and sends the high-humidity air to the other passage of the sensible heat exchanger to generate dew in the sensible heat exchanger, and then circulates again to the moisture absorbing rotor via a heater; Means for collecting dew water condensed in the sensible heat exchanger.

According to the above configuration, the air which has been regenerated from the moisture absorbing rotor and has become highly humid is circulated to the moisture absorbing rotor again through the heater after the moisture is removed by the sensible heat exchanger. It is not discharged outside. Also, since the fan that sends the air to be dehumidified to the moisture absorbing rotor and the fan that sends the air for regeneration to the moisture absorbing rotor are separated, the pressures of the chambers provided before and after the moisture absorbing rotor can be made almost the same. Since the air to be recovered and the air for regeneration do not mix, the amount of dehumidification is improved.

In order to achieve the above object, a second aspect of the present invention is such that the moisture absorbing rotor rotates by utilizing the weight of the absorbed moisture.

According to the above configuration, it is not necessary to provide a drive source for the moisture absorbing rotor, so that the configuration is simplified and the power consumption can be reduced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. 3 is a partially cutaway perspective view of the dehumidifier, FIG. 4 is a sectional view taken along line AA in FIG. 3, and FIG. 5 is an operation explanatory view.

In FIG. 3, reference numeral 1 denotes a main body of a dehumidifier, and a container 2 for storing dew water is provided on the inner bottom of a box-shaped case 1a.
Is provided. On the container 2, two first and second fans 4 and 5 that are simultaneously rotated by a fan motor 3 are installed, and the air around the main body 1 taken into the main body 1 by the first fan 4 is The air is taken into the duct 8 through the passage 6 a and the chamber 7 of the sensible heat exchanger 6 installed above the container 2, and is sent to the moisture absorbing rotor 9.

The hygroscopic rotor 9 has a disk shape and is rotatably housed in a cylindrical hygroscopic rotor case 10. The front and rear surfaces of the hygroscopic rotor case 10 are semicircular at opposite positions. Chambers 12 and 13 are provided. The moisture absorbing rotor 9 has a number of passages 9 impregnated or coated with a substance that absorbs or adsorbs moisture, such as calcium chloride, lithium chloride, silica gel, molecular sieves, or the like.
a, 9b are provided so as to penetrate the front and rear surfaces, a shaft 9c provided at the center is rotatably supported by the moisture absorbing rotor case 10, and a duct 8 is provided in one of the chambers 12, 13. Is connected, and when the air that has flowed into the chamber 12 from the duct 8 passes through the passage 9 b of the moisture absorbing rotor 9, moisture in the air is dehumidified.

The air that has passed through the passage 9b of the moisture absorbing rotor 9 is drawn into the first fan 4 from the chamber 13 provided on the opposite side through the duct 14, and then goes out of the main body 1 through an air exhaust port (not shown). It is designed to be exhausted.

On the other hand, the air sent from the second fan 5 is sent from the duct 15 to another passage 6b of the sensible heat exchanger 6, and the air passing through the passage 6b is sent to the chamber 17 in which the heater 16 is provided. And heated by the heater 16. The air that has passed through the chamber 17 flows through the duct 18 into one of the chambers 19, 20 provided on the front and rear surfaces of the moisture absorbing rotor case 10.

The chambers 19 and 20 are smaller than the other chambers 12 and 13 so that the air sent into one chamber 19 passes through the passage 9a of the moisture absorbing rotor 9 and then reaches the other chamber 20. Has become. The air that has reached the chamber 20 is sent to the passage 6c of the sensible heat exchanger 6 through the chamber 23 provided above the sensible heat exchanger 6 by the duct 22, and the air passing through the passage 6c is subjected to the sensible heat exchange. Room 25 of drain pan 24 installed at the bottom of vessel 6
And is sent to the second fan 5 by the duct 26 to be circulated again through the above path.

FIG. 4 shows the inner bottom of the drain pan 24.
As shown in FIG. 7, a drain hole 24a is opened, and a float valve 27 is provided in the drain hole 24a. The float valve 27 includes a valve body 27a for opening and closing the drain hole 24a,
It consists of a float 27b attached to the upper part of 27a, and when dew water accumulates in the drain pan 24, it is released by buoyancy to drain the dew water in the drain pan 24 into the lower container 2. ing.

The sensible heat exchanger 6 is connected to the passages 6a and 6a.
b, 6c, and these passages 6a, 6b and passage 6
The air flowing through c is configured to exchange heat with each other.

Next, the operation of the dehumidifier constructed as described above will be described. When a power switch (not shown) is turned on to start dehumidification, the fan motor 3 operates and the first fan 4
Then, the second fan 5 rotates and the heater 16 is energized. The air sucked by the first fan 4 from an air suction port (not shown) reaches the moisture absorbing rotor 9 through the passage 6a of the sensible heat exchanger 6, and when passing through the passage 9b of the moisture absorbing rotor 9, water vapor in the air is absorbed. Then, dehumidification is performed. The dehumidified and dried air is discharged from the first fan 4 from an air exhaust port (not shown), and the moisture absorbing rotor 9 absorbs water vapor in the air, so that the chambers 12 and 13 become heavier. It rotates by itself in the direction of the arrow.

On the other hand, the air sent out by the second fan 5 reaches the heater 16 via the passage 6b of the sensible heat exchanger 6, is heated to a high temperature by the heater 16, and then reaches the passage 9a of the moisture absorbing rotor 9. The passage 9a on the side of the chambers 19 and 20 absorbs water vapor in the air on the side of the chambers 12 and 13 and becomes highly humid.
The high-temperature air heated by the heater 16 flows into the high-humidity passage 9a due to its own rotation, and the air that has been generated by passing steam becomes high-temperature and high-humidity. The moisture-absorbing rotor 9 is regenerated by depriving of the moisture, becomes a state capable of absorbing water vapor again, and rotates by itself toward the chambers 12 and 13.

The high-temperature, high-humidity air is supplied to the sensible heat exchanger 6.
And passes through the passage 6c. At this time, the high-temperature and high-humidity air is cooled by the air passing through the passages 6b and 6c of the sensible heat exchanger 6, and dew condensation occurs on the surface of the passage 6c. The temperature of the air flowing out of the passage 6c does not become lower than the temperature of the air passing through the passage 6a, and the relative humidity is 100%.
Higher than the absolute humidity of the surrounding air. This humid air is second
After being sucked into the fan 5, it is blown out to the duct 15 again without being discharged out of the main body 1, and circulates in the above path.

The dew water generated in the passage 6c of the sensible heat exchanger 6 is collected in a drain pan 24. The drain hole 24a at the bottom of the drain pan 24 is provided with a float valve 27 to prevent air from flowing.
However, when dew water accumulates in the drain pan 24, the float 27b rises to open the valve body 27a. Can be

The amount of water stored in the container 2 is the amount of dehumidification of the dehumidifier, and the dehumidification can be performed by taking out the container 2 from the main body 1 and discharging it when it is properly collected.
With the above configuration, the path having the second fan 5 has the chamber 20 as an inlet and the chamber 19 as an outlet. The pressures of these chambers are almost the same as those of the chambers 12 and 13. Accordingly, the gap between the moisture absorbing rotor case 10 and the moisture absorbing rotor 9 between the chambers 19 and 20 and the chambers 12 and 13 is small or
If the distance between the chambers 9 and 20 and the chambers 12 and 13 is sufficiently large, the air flowing into the chamber 19 is sucked into the chamber 20 without being mixed with the air in the chambers 12 and 13, and the dehumidification is performed as in a conventional dehumidifier. No efficiency loss occurs.

In the above embodiment, the dehumidifying rotor 9 has a disk shape, but may have a polygonal cylindrical shape or a rectangular parallelepiped shape. Further, in the above embodiment, the moisture absorbing rotor 9 is rotatably supported, and is rotated by itself by the weight of the absorbed water vapor. However, it may be linked with the fan motor 3 by the power transmission means. Further, in the above-described embodiment, heat is recovered when the air flowing into the chamber 17 having the heater 16 is passed through the passage 6b of the sensible heat exchanger 6 to cool the high-temperature and high-humidity air. You may.

On the other hand, in the dehumidifying device that rotates the moisture absorbing rotor 9 by its own weight, the moisture absorbing rotor 9 does not rotate smoothly unless a gap is provided between the moisture absorbing rotor 9 and the partitions located on both sides thereof. For this reason, in the conventional dehumidifying device, a gap of 1 mm is provided between the moisture absorbing rotor 9 and the partition. However, every time the gap is widened by 1 mm, the dehumidifying amount is reduced by about 10%, and the dehumidifying efficiency is reduced. I have.

However, in the dehumidifying device according to the embodiment of the present invention, even if the gap between the moisture absorbing rotor 9 and the moisture absorbing rotor 10 was increased to 4 mm, the amount of dehumidification hardly decreased. Therefore, according to the dehumidifying device of the present invention, the dimensional tolerance during mass production can be made large, which facilitates manufacture and assembly, and furthermore, dust and the like enter between the moisture absorbing rotor 9 and the moisture absorbing rotor case 10, so that the moisture absorbing rotor 9 There is no problem such as inability to rotate.

[0031]

According to the present invention, as described in detail above, the moisture absorbed by the moisture absorbing rotor is evaporated into the air heated by the heater, and the moisture absorbing rotor is regenerated so that it can absorb moisture again. The effect can be maintained for a long time, and the air containing water vapor evaporated from the moisture absorption rotor is circulated again through the sensible heat exchanger, so that the conventional highly humid air containing water vapor flows out of the main body. The dehumidifying effect is greatly improved as compared with the exhausted one.

In the present invention, a fan for blowing air to be dehumidified and a fan for regenerating the moisture absorbing rotor are separately provided.
Since the air for regenerating the moisture absorbing rotor is circulated, the pressures of the respective chambers provided before and after the moisture absorbing rotor are substantially the same. As a result, even if the gap between the moisture absorbing rotor and the moisture absorbing rotor case is increased, the air does not mix with each other, so that the high humidity air generated by the conventional moisture absorbing rotor is mixed with the moisture reducing rotor to reduce the amount of dehumidification. Problems such as a decrease in the amount of high-humidity air that is sent to the exchanger to remove moisture and a decrease in the amount of dehumidification can be solved.

Further, the gap between the moisture absorbing rotor and the moisture absorbing rotor case can be increased, so that the dimensional tolerance in mass production can be increased. This facilitates manufacture and assembly, and can be provided at low cost. There is no problem such as intrusion of dust and the like into the gap between the rotor and the moisture absorbing rotor case, and the rotation of the moisture absorbing rotor becomes impossible.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a conventional dehumidifier.

FIG. 2 is a diagram illustrating the operation of a conventional dehumidifier.

FIG. 3 is a partially cutaway perspective view of the dehumidifier according to one embodiment of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is an operation explanatory view of the dehumidifying device according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 4 1st fan 5 2nd fan 6 Sensible heat exchanger 6a passage 6b passage 9 Moisture absorption rotor 16 heater

Claims (2)

[Claims] An air to be dehumidified is sucked into a main body, and the air is sent to a rotatable hygroscopic rotor through one passage of a sensible heat exchanger and dehumidified by the hygroscopic rotor. A first fan 4 for discharging air out of the main body 1 and a heater 16
The heated air is sent to the dehumidification rotor 9 to evaporate the moisture in the moisture absorption rotor 9 to regenerate the moisture absorption rotor 9, and the highly humid air is sent to the other passage 6 c of the sensible heat exchanger 6. A second fan 5 that circulates through the heater 16 again to the moisture absorbing rotor 9 after being sent to generate dew in the sensible heat exchanger 6, and means for collecting dew water condensed in the sensible heat exchanger 6. A dehumidifier comprising: 2. The dehumidifying device according to claim 1, wherein the moisture absorbing rotor 9 rotates by utilizing the weight of the absorbed moisture.