JP2001182981A - Underfloor dehumidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an underfloor dehumidifier which can ensure a sufficiently high dehumidification effect in a space under the floor in a short time. SOLUTION: A plurality of air outlets 51A-51D of a passage 15 for leading out dehumidified air delivered from the air outlet 33 of a dehumidifier 13 and the air inlet 59 of an air introduction passage 17 are distributed in a space 1 under the floor so that dehumidified air flows into the high humidity region in the space 1 under the floor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor dehumidifying apparatus for dehumidifying an underfloor space of a building.

[0002]

2. Description of the Related Art In general, an underfloor dehumidifier for dehumidifying an underfloor space of a building is forcibly blowing air from a specific portion of the building by an air supply fan and exhausting the air from the underfloor ventilation holes to the outside at another position to provide ventilation. I do. However, such an underfloor dehumidifier has a problem that it is not possible to always keep the humidity of the underfloor space below a predetermined humidity. Therefore, a sufficient antifungal effect and an effect of preventing termites from being adhered could not be obtained. Therefore, as disclosed in Japanese Patent Application Laid-Open No. H10-96536, a dehumidifier that dehumidifies air taken in from an intake port and discharges it from a discharge port, and a dehumidified air discharged from a discharge port in a predetermined space under the floor of a building. There has been proposed an underfloor dehumidifier provided with an air outlet passage leading out from the outlet and an air inlet passage near the dehumidifier that guides air in the underfloor space from the inlet to the inlet of the dehumidifier.

[0003]

In this conventional underfloor dehumidifying device, one outlet of the air outlet passage is disposed at a position close to the dehumidifier or at the center of the underfloor space. However, even if one outlet is arranged at such a position,
There is a problem that it takes a long time to sufficiently perform dehumidification in a high-humidity region where the humidity is particularly high in the underfloor space.

An object of the present invention is to provide an underfloor dehumidifier capable of sufficiently enhancing the dehumidifying effect of an underfloor space in a short time.

Another object of the present invention is to provide an underfloor dehumidifier capable of sufficiently enhancing the dehumidifying effect of an underfloor space having a corner.

Another object of the present invention is to provide an underfloor dehumidifier capable of preventing small animals such as rats from entering the air outlet passage or the air inlet passage.

Another object of the present invention is to provide an underfloor dehumidifier capable of preventing abnormal drying of the ceiling in the underfloor.

Another object of the present invention is to provide an under-floor dehumidifying apparatus which can be equipped with a dehumidifier corresponding to the position of a vent formed in a wall of a under-floor portion of a building.

[0009]

SUMMARY OF THE INVENTION An underfloor dehumidifier to be improved by the present invention is a dehumidifier which dehumidifies air taken in from an air inlet and discharges dehumidified air from a discharge port, and a dehumidifier discharged from the discharge port. An air outlet passage that leads the dehumidified air to a predetermined position in the underfloor space of the building from the outlet, and an air inlet that is connected to the inlet and guides the air in the underfloor space from the inlet to the dehumidifier near the dehumidifier. It has a passage and dehumidifies the underfloor space of the building. In the present invention, a plurality of outlets of the air outlet passage are provided, and the inlet and the plurality of outlets are provided in the underfloor space such that dehumidified air flows in a high humidity area where humidity tends to increase in the underfloor space. Distribute and arrange. As in the present invention, when the inlet and the plurality of outlets are dispersedly arranged in the underfloor space so that the dehumidified air flows into the high-humidity region, the dehumidified air derived from the outlet causes the dehumidified air to flow in the high-humidity region. The high-humidity air can be positively pushed out of the area and moved to the area where the inlet of the air introduction passage is located, so that the dehumidifying effect of the underfloor space can be sufficiently enhanced in a short time.

[0010] In order to concretely carry out such a configuration, an air outlet passage is constituted by a main outlet passage connected to a discharge port, and a plurality of sub outlet passages connected to the main outlet passage via a branch portion. Then, an outlet may be formed at each of the distal ends of the plurality of sub-outlet passages. By configuring the air outlet passage in this way,
The number of outlets can be easily increased or decreased.

When the underfloor space has a corner, the flow of air near the corner is often poor, resulting in a high humidity area. Therefore, in such an underfloor space, it is preferable to arrange at least one of the outlets so as to open toward the corner. In this way, the humid air moves along the base walls located on both sides of the corner, and the air moves smoothly.

The air flowing through the air outlet passage loses pressure due to friction with the inner wall of the air outlet passage. Therefore, it is preferable to set the length and the cross-sectional area of the air outlet passage so that the pressure of the air discharged from the outlet does not fall below 50% of the pressure of the air discharged from the outlet of the dehumidifier. . If the pressure of the air is lower than 50%, a sufficient air flow cannot be created in the underfloor space, and the dehumidifying effect cannot be increased in a short time.

The main part of the air outlet passage is preferably formed by a flexible pipe. If you do this,
The air outlet passage can be easily arranged even when there is an obstacle such as a base wall or a pipe under the floor. As the flexible pipe, for example, a cylindrical resin film, glass wool disposed on the inner peripheral surface of the resin film, cloth disposed on the inner peripheral surface of the glass wool, and disposed on the inner peripheral surface of the cloth. Using a soundproof flexible pipe composed of a metal wire and a spring spring,
Noise transmitted to the room above the floor can be eliminated.

[0014] The dehumidifier is preferably located in a location with poor sunshine, such as between the north and west sides of the building. This not only prevents the dehumidifier from being exposed to direct sunlight, but also allows the air in the underfloor space in a sunny place where relatively high humidity tends to be quickly taken into the dehumidifier. it can.

[0015] Since small animals such as rats are often present in the underfloor space, it is preferable to attach a cover member having ventilation and preventing entry of small animals to the outlet and the inlet.

When the outlet of the air outlet passage faces the ceiling (under the floor) under the floor of the building, dehumidified air is blown to the ceiling under the floor, and the ceiling under the floor abnormally dries. Floor may warp. Therefore, the air outlet passage
It is preferable that the outlet is hung on the ceiling under the floor of the building so that the outlet faces the ground. By arranging the air outlet passage in this way, it is possible to prevent the ceiling portion under the floor from drying abnormally.

Further, the dehumidifier is disposed outside the building, and the air outlet passage and the air inlet passage penetrate the wall of the building, and the outlet passage fixed portion and the inlet passage fixed portion fixed to the wall, respectively. In the case where it is provided, it is preferable to form a portion located between the discharge passage fixed portion and the introduction passage fixed portion and the discharge port and the intake port of the dehumidifier by a stretchable flexible pipe. In this way, even if the intake and discharge ports of the dehumidifier differ from the through-holes formed in the wall under the floor of the building and the existing vents, the height of the through-holes and vents can be reduced. The dehumidifier can be installed without much concern for the position or height. Therefore, installation of a dehumidifier becomes easy. Further, even if vibration is applied due to an earthquake or the like, it is possible to prevent the flexible pipe from deforming and applying excessive force to the air outlet passage, the air introduction passage, and the connection portion.

Although various types of dehumidifiers can be used, air to be dehumidified is blown to the moisture absorbing rotor to be absorbed by the moisture absorbing rotor, and the hot air blown to the moisture absorbing rotor at another position in the circumferential direction of the moisture absorbing rotor. It is preferable to use one having a dry structure that releases the absorbed moisture to the outside. This type of dehumidifier does not require a cooling medium or a compressor for compressing the cooling medium, so that the equipment cost is low, the service life is long, and there is an advantage that the noise is reduced only by the rotation sound of the moisture absorbing rotor. .

[0019]

1 and 2 are schematic diagrams showing an underfloor space of a building in which an underfloor dehumidifying device according to an embodiment of the present invention is arranged.

In the building 3 where the underfloor space 1 is to be dehumidified in this example, the underfloor space 1 has four corners 1A to 1D.
The upper part is closed with a floor 5, the lower ground is covered with an earth-poured concrete surface 7, and the side wall surrounding the underfloor space 1 is also closed.

The underfloor dehumidifier 11 for dehumidifying the underfloor space 1 has a dehumidifier 13, an air outlet passage 15, and an air inlet passage 17. The dehumidifier 13 is disposed substantially outside the center of the northern wall 2a of the building 2. The dehumidifier 13 is preferably arranged at a position where the sun is poor, for example, it is preferably arranged between the north side and the west side of the building 2. In the present embodiment, a so-called dry type dehumidifier 13 is used. More specifically, the dehumidifier 13
Is, as shown in FIG.
Air A1 to be dehumidified inhaled through the casing 21
And is sprayed on one side of the circumferential direction of the moisture absorbing rotor 23 which is rotated by a motor (not shown), so that the moisture absorbing rotor 23 absorbs moisture, and is branched from the intake port 19 to another position in the circumferential direction of the moisture absorbing rotor 23. The air A2 is blown while being heated by the blower 25 and the dehumidifying heater 27. This allows
The air A3 containing the absorbed moisture is discharged to the outside from the exhaust port 29, and the dehumidified air A4 is supplied to the discharge port 33 by the blower 31. In this example, about 80% of the air supplied from the intake port 19 is supplied to the moisture absorbing rotor 23, and the remaining about 2% is supplied.
0% is supplied to the blower 25. When a dry-type dehumidifier 13 is used as described above, a cooling medium and a compressor for compressing the cooling medium are not required, and equipment costs are reduced.
There is an advantage that low noise can be obtained only by the rotation sound.

In the underfloor dehumidifier 11, a humidity sensor 35 is disposed substantially at the center of the underfloor space 1 which is hardly affected by the flow of air in the underfloor space 1. A controller 37 for controlling the operation of the dehumidifier 13 is provided in the dehumidifier 13. Controller 37
Starts the operation of the dehumidifier 13 when the humidity measured by the humidity sensor 35 exceeds the set humidity, and stops the operation of the dehumidifier 13 when the humidity of the underfloor space 1 becomes lower than the set humidity. Configuration.

The air outlet passage 15 includes a main outlet passage 39 connected to the discharge port 33 of the dehumidifier 13, and a plurality of air outlet passages 15 connected to the main outlet passage 39 via the branch portion 41 (in this example, two outlets).
), And the dehumidified air discharged from the discharge port 33 of the dehumidifier 13 is provided with four outlets 51A to 51A to be described later provided in the auxiliary outlet passages 43A and 43B. It is led out from 51D into the underfloor space 1 of the building 3. As shown in FIG. 4, the main lead-out passage 39 penetrates the wall 2 a of the building 2, and is fixed to the introduction passage fixed portion 45 made of an iron pipe fixed to the wall 2 a, the introduction passage fixed portion 45, and the dehumidifier. 13 has a flexible pipe 47 disposed between the discharge port 33 and the discharge port 33, and a passage portion 49 extending between the introduction passage fixed portion 45 and the branch portion 41. In this example, the wall 2
The introduction passage fixed portion 45 is fixed to the wall portion 2a using an existing ventilation port formed in the wall portion 2a. The flexible pipe 47 is formed of a resin, and has a bellows structure that can expand and contract in the direction in which the flexible pipe 47 extends. As shown in the sectional view of FIG. 5, the passage portion 49 includes a cylindrical resin film 49a and a resin film 49.
a, a cloth 49c disposed on the inner peripheral surface of the glass wool 49b, and a cloth 49c disposed on the inner peripheral surface of the glass wool 49b.
and a spring 49d made of a metal wire disposed on the inner peripheral surface of the spring c. A space through which air passes is formed inside the spring 49d.

The auxiliary outlet passage 43A is formed of a flexible pipe similarly to the passage portion 49 of the main outlet passage 39, and includes a first passage 44A and two second passages 44B branched from the first passage 44A. , 44C.
At the distal end of the second passages 44B and 44C, an outlet 51 is provided.
A, 51B are formed. In addition, the sub lead-out passage 43B
Similarly to the sub-leading passage 43A, it is formed of a flexible pipe, and includes a first passage 44D and a first passage 4D.
It has two second passages 44E and 44F branching from 4D. At the tip of the second passages 44E and 44F,
Outlets 51C and 51D are formed. Outlet 51A
To 51D have the same structure.
1A as an example, as shown in FIG. 6, a net-shaped, slit-shaped or grid-shaped cover member 5 having air permeability and mesh size for preventing invasion of small animals such as rats.
1a is attached to the outlet 51A. The outlets 51A to 51D and the inlet 59 of the air introduction passage 17 to be described later are dispersedly arranged in the underfloor space so that dehumidified air flows in a high humidity area where the humidity increases in the underfloor space 1. ing. In this example, four corners 1 of the underfloor space
Since A to 1D are high humidity areas, the outlets 51A to 51D
D is open toward each of the corners 1A to 1D. As in this example, the inlet 59 and the plurality of outlets 51
When A to 51D are arranged, the dehumidified air derived from the outlets 51A to 51D can positively push out high-humidity air in the high-humidity area from the area and move it to the area where the inlet 59 is located. Therefore, the dehumidifying effect of the underfloor space 1 can be sufficiently enhanced in a short time. In this example, as described above, since the passage portion 49 of the main outlet passage 39 and the sub outlet passages 43A and 43B are formed by flexible pipes, the arrangement position of the outlet can be easily changed. The air flowing through the air outlet passage 15 loses pressure due to friction with the inner wall of the air outlet passage 15. Therefore, the length and diameter of the air outlet passage 15 are set so that the pressure of the air discharged from the outlets 51A to 51D does not fall below 50% of the pressure of the air discharged from the outlet 33 of the dehumidifier 13. Is set to In this example, the outlet port 51A is connected to the outlet port 33 of the air outlet passage 15.
To 51D are within 10 m, and the diameter of the air outlet passage 15 is 100 mm. As shown in FIG. 1, the second passages 44B, 44C, 4
4E and 44F are provided on the ceiling (under the floor 5) under the floor of the building 3 by a suitable means such as a string 46 such that the outlets 51A to 51D face the ground side by appropriate means such as a string 46. Hanged. Therefore, it is possible to prevent the ceiling part under the floor from being abnormally dried.

As shown in FIG. 4, the air introduction passage 17
Similarly to the main outlet passage 39 of the air outlet passage 15, the introduction passage fixed portion 53 made of an iron tube penetrating the wall 2 a of the building 2 and fixed to the wall 2 a, the introduction passage fixed portion 53, and the dehumidifier 13. And a passage portion 57 extending from the introduction passage fixed portion 53 into the underfloor space 1. Introductory passage fixed part 53
The flexible pipe 55 has the same structure as the introduction passage fixed portion 45 of the air outlet passage 15 and the flexible pipe 47. The passage 57 has the same structure as the passage 49 of the air outlet passage 15 except for the length. As shown in FIGS. 1 and 2, the passage portion 57 has an introduction port 59 at an end opposite to the introduction passage fixed portion 53. A cover member as shown in FIG. Inlet 5
9 is arranged at a position close to the dehumidifier 13, and the air in the underfloor space 1 which is led out from the outlets 51 </ b> A to 51 </ b> D and introduced into the inlet 59 is led to the inlet 19 of the dehumidifier 13. . In this example, the passage 57 is formed of the same flexible pipe as the passage 49, but the passage 5
Of course, 7 may be formed by a rigid pipe.

In the above example, the auxiliary outlet passage (43)
A) and (43B) are connected to the first passages (44A) and (44).
D) and two second passages (44B, 44C), (44E, 4) branched from the first passages (44A), (44D).
4F), but it goes without saying that the auxiliary lead-out passage may be constituted by only one passage.

In the above example, the outlets 51A to 51D are arranged so as to open toward the corners 1A to 1D of the underfloor space 1 having four corners. Since the position differs depending on the surrounding environment, the arrangement position of the outlet may be appropriately determined according to each situation. For example, in a newly-built house, the corners are not so humid, so the walls 2b and 2 are east and west of the building 2 as shown in FIG.
Outlets 151A and 151B can be arranged toward c.

In the above example, when the humidity becomes lower than the set humidity, the operation of the dehumidifier 13 is stopped. However, the dehumidifier 13 is operated such that the dehumidification is not performed but the circulation of the air is continued. You can also.

In the above example, the dehumidifier 13 has a dry structure without using a cooling medium or a compressor for compressing the cooling medium. However, a dehumidifier 13 using a compressor or the like for compressing the cooling medium or the cooling medium is usually used. Can be used.

[0030]

According to the present invention, the inlet and the plurality of outlets are dispersedly arranged in the underfloor space so that the dehumidified air flows into the high humidity area. Air can actively push out high-humidity air in the high-humidity area from that area and move it to the area where the inlet of the air introduction passage is located, so that the dehumidifying effect of the underfloor space can be sufficiently reduced in a short time Can be enhanced.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an underfloor space of a building in which an underfloor dehumidifying device according to an embodiment of the present invention is arranged.

FIG. 2 is a schematic diagram of an underfloor space of a building in which an underfloor dehumidifying device according to an embodiment of the present invention is arranged.

FIG. 3 is a schematic diagram used to explain functions of a dehumidifier used in the underfloor dehumidifier shown in FIG.

FIG. 4 is a partial sectional view showing the vicinity of a dehumidifier used in the underfloor dehumidifier shown in FIG.

5 is a sectional view of a passage portion of an air outlet passage used in the underfloor dehumidifier shown in FIG.

FIG. 6 is a plan view of an outlet of an air outlet passage used in the underfloor dehumidifier shown in FIG. 1;

FIG. 7 is a schematic diagram of an underfloor space of a building in which an underfloor dehumidifying device according to another embodiment of the present invention is arranged.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Underfloor space 1A-1D Corner 3 Building 5 Floor 11 Underfloor dehumidifier 13 Dehumidifier 15 Air lead-out passage 17 Air introduction passage 19 Inlet 33 Inlet 33 Outlet 35 Humidity sensor 39 Main lead-out passage 41 Branch 43A, 43B Secondary lead-out passage 47 , 55 Flexible pipes 51A to 51D Outlet 51a Cover member 59 Inlet

Claims (12)

[Claims] 1. A dehumidifier for dehumidifying air sucked from an air inlet and discharging dehumidified air from a discharge port, and guiding the dehumidified air discharged from the discharge port to a predetermined position in a space under the floor of a building. An air outlet passage leading out from an outlet, and an air inlet passage connected to the air inlet and leading air in the underfloor space from the inlet to the dehumidifier at a position close to the dehumidifier, the underfloor space of the building In the underfloor dehumidifier for dehumidifying, the outlet of the air outlet passage is provided with a plurality of outlets, and the inlet and the plurality of outlets are located in a high-humidity region where humidity tends to increase in the underfloor space. An underfloor dehumidifying device, wherein the underfloor dehumidifying device is dispersed and arranged in the underfloor space so that dehumidified air flows. 2. The air outlet passage includes a main outlet passage connected to the discharge port, and a plurality of sub outlet passages connected to the main outlet passage via a branch portion. The underfloor dehumidifier according to claim 1, wherein the outlet is formed at each end of the dehumidifier. 3. The underfloor dehumidifying apparatus according to claim 2, wherein the underfloor space has a corner, and at least one of the outlets opens toward the corner. . 4. The length and cross-sectional area of the air outlet passage are such that the pressure of the air discharged from the outlet does not fall below 50% of the pressure of the air discharged from the outlet of the dehumidifier. The underfloor dehumidifying apparatus according to claim 2, wherein the underfloor dehumidifying apparatus is set for each of the following. 5. The underfloor dehumidifier according to claim 1, wherein a main part of the air outlet passage is formed by a flexible pipe. 6. The flexible pipe includes a cylindrical resin film, glass wool disposed on an inner peripheral surface of the resin film, a cloth disposed on an inner peripheral surface of the glass wool, and an inner peripheral surface of the cloth. The underfloor dehumidifying apparatus according to claim 5, comprising a spring formed of a metal wire and disposed at the bottom. 7. The underfloor dehumidifier according to claim 1, wherein the dehumidifier is disposed outside the building at a position where the sunshine is poor. 8. The underfloor dehumidifier according to claim 7, wherein the dehumidifier is disposed at a position between a north side and a west side of the building. 9. The underfloor dehumidifying apparatus according to claim 1, wherein a cover member that has air permeability and prevents invasion of small animals is attached to the outlet and the inlet. 10. The underfloor dehumidifying apparatus according to claim 1, wherein the air outlet passage is suspended from a ceiling in a floor of the building such that the outlet port faces the ground. apparatus. 11. The dehumidifier is disposed outside a building, and the air outlet passage and the air inlet passage penetrate a wall of the building and are fixed to the outlet passage fixed to the wall. And a portion located between the discharge passage fixed portion and the introduction passage fixed portion and the discharge port and the intake port of the dehumidifier, respectively. The underfloor dehumidifier according to claim 1, wherein the underfloor dehumidifier is formed by: 12. The dehumidifier blows air to be dehumidified to a moisture absorbing rotor to absorb moisture by the moisture absorbing rotor, and removes moisture absorbed by warm air blown to the moisture absorbing rotor at another position in a circumferential direction of the moisture absorbing rotor. The underfloor dehumidifying apparatus according to claim 1, wherein the underfloor dehumidifying apparatus has a dry structure for discharging to the outside.