JP3294500B2 - Steam humidifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam humidifier, and more particularly to, for example, a steam humidifier that humidifies air by ejecting steam into an air passage in an air conditioner or a duct.

[0002]

2. Description of the Related Art An example of this type of conventional steam humidifier is disclosed in Japanese Patent Application Laid-Open No. Hei 8-5113 filed on Jan. 12, 1996.
No. 6,086,045. In this prior art, a horizontally supported spray header is disposed so as to cross a ventilation path, and steam ejected from an ejection port provided above the spray header is vertically (upward) by a plurality of standing resistors. It is intended to guide, spread and spray.

[0003]

However, in this prior art, the steam ejected from the ejection port is caused to flow along the standing resistor.
There is a limit in the vertical direction, and even if the standing resistor is extended further in the vertical direction (upward), it is difficult to supply steam as expected upward. Therefore, there is a problem that the method cannot be applied to a vertically long air conditioner extending in the vertical direction.

[0004] Further, there is a disadvantage that the steam ejected from the ejection port is cooled by the airflow or the standing resistor, and condensed water generated by the cooling is scattered in the airflow and wets the inside of the air conditioner. Furthermore, the fixing of the standing resistor is troublesome, and a plurality of standing resistors must be provided, so that the air resistance increases, and there is a concern that the steam diffusion capability may be reduced.

Therefore, a main object of the present invention is to provide a steam humidifier that can diffuse humidified steam over a wide area even in a vertically long air conditioner and does not wet the inside of the air conditioner. is there.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an air flow path.
And ejecting steam to a steam humidifier for humidifying air, humidifying tubes having a and a plurality of steam jetting holes arranged in the air flow path the axis as a vertical, et provided surrounding around the humidifying tubes
Is formed on the upstream side of the air flow path, extending in the longitudinal direction.
An outer box member having an opening, a porous partition member closing the opening and having a large number of holes formed therein, and an inner space of the outer box member.
It is a steam humidifier provided with a partition member for dividing the space in the longitudinal direction .

[0007]

The steam taken into the humidifying tube from the steam generating source is blown out of the humidifying tube through a plurality of steam outlets. The steam contacts the inner wall of the outer box member, thereby removing condensed water in the steam. Then, the steam in the outer box member is ejected into the airflow from a hole provided in the porous partition wall member. At this time, the condensed water in the steam is captured by the porous partition wall member. The captured condensed water falls on the porous partition wall member and the wall surface of the outer box member together with the condensed water condensed by the outer box member, and is discharged from the drain hole. Therefore, there is no possibility that the inside of the air conditioner will be wet with the condensed water.

[0008] The steam ejected from the steam ejection hole is
The upward flow is regulated by the partition plate. Therefore, there is no possibility that the steam spouted from the humidification tube rises at a stretch upward, and the steam in the outer box member is biased upward. Therefore, the steam can be uniformly diffused from below to above the air conditioner. Further, the vapor that has passed through the porous member is diffused over a wider range by the diffusion member.

[0009]

According to the present invention, in a vertically long air conditioner, humidified steam can be diffused evenly in the entire air flow, and the inside of the air conditioner is not wetted with condensed water. Further, since the humidifying tube can be easily attached, the workability such as maintenance is excellent. The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0010]

1 and 2, a steam humidifier 10 of this embodiment is built in, for example, a vertically long air conditioner 12, which humidifies air in the air conditioner 12. Is done. The air conditioner 12 includes a housing 16 having a return air port 14a and an air supply port 14b formed on an upper surface thereof. Inside the housing 16, an air filter 18, a cooling coil 20, a heating coil 22, a blower 24 are provided. And the electric motor 26 are arranged in this order from the airflow upstream side. Further, the outlet 28 of the blower 24 is connected to the air supply port 14b, and the steam humidifier 10 described in detail later is installed between the heating coil 22 and the blower 24.

That is, referring to FIGS. 3 and 4, steam humidifier 10 includes an outer box 30 which is set slightly shorter than the length of housing 16 in the longitudinal direction.
As shown in FIG. 4, it is formed, for example, in a substantially rectangular cross section.
An opening 38 extending in the longitudinal direction is provided on one side of the outer box 30.
Is formed. A drain hole 40 is formed at the lower end of the outer case 30, and condensed water in the steam condensed in the outer case 30 is discharged from the discharge hole 40.

At the longitudinal end of the outer box 30, fixing members 39 each having a substantially L-shape are provided, and the fixing members 39 are fixed to the heating coil 22 using bolts or the like. That is, the outer case 30 is disposed on the air conditioner 12 such that the longitudinal direction is vertical. Then, a humidifying tube 34 is disposed inside the outer box 30. Humidifier tube 34
Is formed, for example, in a substantially cylindrical shape, and a plurality of steam ejection holes 32 are provided at predetermined intervals so as to be arranged in the axial direction. The humidification pipe 3 is placed in the outer case 30 with its axis vertical so that the steam ejection hole 32 faces the downstream of the air flow.
4 are arranged. As shown in FIGS. 2 and 5, a steam inlet pipe 36 is connected to one end (upper end side) of the humidifying pipe 34, whereby steam from a not-shown steam generating source is supplied into the humidifying pipe 34.

On the other hand, as shown in FIGS. 7 and 8, a cap 46 having a discharge hole 44 is attached to the opening on the other end (lower end) side of the humidifier Is prevented from escaping, and the condensed water captured in the humidification tube 34 is discharged from the discharge hole 44. In addition,
As shown in FIGS. 8A and 8B, the cap 46 is easily and detachably fixed to the humidifying tube 34 by bolts or screws.

Inside the outer box 30, a humidifying tube 34 is further provided.
A partition plate 42 is provided so as to traverse. In this embodiment, as shown in FIG. 3, two partition plates 42 are arranged at predetermined intervals in the longitudinal direction. As a result, the space surrounding the humidifying tube 34 in the outer box 30 is divided, and the outer box 3
0, the first chamber 48a, the second chamber 48b, and the third chamber 48c.
Is formed. Therefore, the steam ejected from the steam ejection holes 32 is blocked by the partition plate 42 without rising inside the outer case 30 to its uppermost position. Therefore, the first room 48
a, steam is supplied to the second chamber 48b and the third chamber 48c almost uniformly. The partition plate 42 is made of a punched metal, a metal scourer, a wire mesh, a plate having a condensed water drop hole, or the like.

An opening 38 formed on one side of the outer box 30
As shown in FIGS. 4 to 7, a porous partition wall 50 having an infinite number of small holes 50 a and a substantially V-shaped cross section is formed in the opening 3.
8 to be closed. Thus, the steam ejected from the steam ejection holes 32 flows out of the plurality of holes 50a into the air conditioner 12, and contacts the wall surface of the porous partition wall 50 to capture condensed water in the steam. The captured condensed water falls along the wall surface of the porous partition wall 50 and is discharged from the discharge hole 40 described above. In this embodiment, a perforated metal is used as the porous partition wall 50, but a wire mesh, a metal scissor, or the like may be used instead.

In operation, when the blower 24 is driven at a predetermined rotation speed so as to satisfy the required air volume, the blower 24
Thereby, return air is taken into the housing 16 through the return air port 14a. This air is dust-removed by an air filter 18, cooled and heated to a predetermined temperature by a cooling coil 20 and a heating coil 22, humidified by a steam humidifier 10 as needed, and then returned to a blower 24 containing steam sucked. Air is sent out from the air supply port 14b.

In the steam humidifier 10, steam from a steam generation source (not shown) is supplied to the humidifier pipe 34 through a steam inlet pipe 36. Then, steam is ejected from the steam ejection holes 32 into the first chamber 48a, the second chamber 48b, and the third chamber 48c formed by the partition plate 42. The spouted (depressurized) steam hits the inner wall of the outer box 30, and the condensed water condensed there is discharged from the discharge hole 40 along the inner wall. The steam from which the condensed water has been removed is guided into the air conditioner 12 through the hole 50a of the porous partition wall 50. At this time, when the steam comes into contact with the porous partition wall 50, the same as before,
Condensed water in the steam is captured. The captured condensed water falls along the wall surface of the porous partition wall 50 and is discharged from the discharge hole 40. Therefore, the steam from which the condensed water has been removed is evenly jetted from the outer case 30 in the longitudinal direction.

The steam humidifier 10 of another embodiment shown in FIGS. 9 to 14 differs from the above-described embodiment in the following points. Therefore, in FIGS.
The same or similar portions as those in FIG. 8 are denoted by the same or similar reference numerals, and detailed description thereof will be omitted. That is, referring to FIGS. 9 to 11, a steam inlet pipe 36 is connected to a lower end of humidifying pipe 34, and steam is supplied into humidifying pipe 34 from below the humidifying pipe 34. Therefore, the humidifying pipe 3 to which the steam inlet pipe 36 was connected in the above-described embodiment.
At the upper end side of the cap 4 (see FIG. 5), instead of the steam inlet pipe 36, as shown in FIG.
6 is attached, whereby the upper end side opening of the humidifying tube 34 is sealed. In addition, even when steam is supplied into the humidifying tube 34 from below as in this embodiment, the humidifying tube 34
Since there is a possibility that the steam may be unilaterally biased upward, the partition plate 42 described in detail with reference to FIG. 3 is provided.

As shown in FIG. 13, the humidifying pipe 34 and the steam inlet pipe 36 are connected to each other by an elbow 52 which is bent at 90 ° and has a discharge hole 46 formed therein. Therefore, the condensed water in the steam condensed in the humidifying pipe 34 is discharged from the discharge hole 46 and the porous partition 5
The condensed water captured at 0 is discharged from the discharge hole 40. Further, as shown in FIG.
The first outer box 30a includes an outer box 30a and a second outer box 30b.
And the second outer box 30b are connected to each other by bolts or the like. Therefore, maintenance of the piping of the humidification pipe 34 and the humidification pipe 34 or the outer box 30 can be easily performed.

In the embodiment shown in FIG.
Substantially V-shaped porous partition wall 50 attached to the opening 38
Unlike the embodiment shown in FIG. 4, is disposed so as to protrude upstream of the airflow, and further, a diffusion plate 54 perpendicular to the airflow direction is disposed. Therefore, the steam ejected from the steam ejection holes 32 is first ejected by the porous partition walls 50 in a direction in which the steam expands with respect to the flow direction of the airflow, and the steam hits the diffusion plate 54 and is further diffused.

As described above, the steam supplied to the humidifying pipe 34 can be evenly dispersed in the vertical direction, and the moisture contained in the supplied steam and the condensed water in the steam humidifier 10 cause the steam inside the air conditioner 12 to be dispersed. Will no longer wet. Further, the steam humidifier 10 itself can be easily removed, and cleaning or inspection of the humidification tube 34 can be easily performed, which is convenient.

As shown in FIG. 16, when humidification is performed by the air conditioner 12 having a relatively wide width, the steam humidifier 10 is used.
Are arranged in the lateral direction so that the air conditioner 12
The inside can be humidified uniformly.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing an air conditioner in which a steam humidifier of the embodiment in FIG. 3 is incorporated.

FIG. 2 is a sectional side view of the air conditioner shown in FIG.

FIG. 3 is an illustrative view showing one embodiment of the present invention;

FIG. 4 is a sectional plan view of the embodiment in FIG. 3;

FIG. 5 is an enlarged sectional view of a portion A in FIG. 3;

FIG. 6 is an enlarged sectional view of a portion B in FIG.

FIG. 7 is an enlarged sectional view of a portion C in FIG. 3;

FIG. 8 is an illustrative view showing a method of joining a humidifying tube and a cap in the embodiment in FIG.
Is joining by screwing.

FIG. 9 is an illustrative view showing an air conditioner in which the steam humidifier of the embodiment in FIG. 11 is incorporated;

10 is a sectional side view of the air conditioner shown in FIG.

FIG. 11 is an illustrative view showing another embodiment;

FIG. 12 is an enlarged sectional view of a portion D in FIG.

13 is an enlarged sectional view of a portion E in FIG.

FIG. 14 is an exploded sectional view of a portion E in FIG.

FIG. 15 is an illustrative view showing an embodiment provided with a diffusion plate;

FIG. 16 is an illustrative view showing an example of arrangement of a steam humidifier when humidifying an air conditioner having a wide width.

[Description of Signs] 10 ... Steam humidifier 12 ... Air conditioner 32 ... Steam outlet hole 34 ... Humidifying tube 36 ... Steam inlet tube 38 ... Opening 40,44 ... Drain hole 42 ... Partition plate 46 ... Cap 50 ... Porous partition 54… Diffusion plate

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shogo Tomita 28 Hirade Industrial Park, Utsunomiya City, Tochigi Prefecture Inside the Tokugi Plant of Kubota Train Co., Ltd. 59-133927 (JP, U) JP-A-2-28026 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 6/18 F24F 6/00 301

Claims (2)

(57) [Claims] 1. A method for humidifying air by injecting steam into an air passage.
A steam humidifier , wherein the humidifier is disposed in the air flow path with the axis being vertical and has a plurality of steam ejection holes, and is provided so as to surround the humidification pipe.
On the upstream side, has an opening formed to extend in the longitudinal direction
An outer box member, a porous partition wall member that closes the opening and has a large number of holes formed therein, and an inner space of the outer box member in the longitudinal direction.
A steam humidifier comprising a partition member for dividing the steam humidifier. 2. A diffusing member is further provided on the upstream side of the air flow path rather than the porous partition member, so that the vapor passing through the porous partition member collides with the diffusing member. Item 4. The steam humidifier according to Item 1.