JPH109624A - Method and device for humidifying - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent steam from being condensated to form water droplets by supplying the steam, from which the water droplets are removed, to a steam pipe and heating the steam by a heating pipe in the steam pipe and spraying the steam to air conditioned air from a steam spray nozzle to humidify the air conditioned air to a prescribed humidity. SOLUTION: In a separator 1 connected to a steam source, steam jetted from a steam outlet port flows in a spiral current along the lower surface of a spiral plate 8, descends along the inner surface of a main body 7, and collides with a baffle plate 12 on the bottom part therein. Thus, water droplets are separated and the spiral current moving upward in a thin spiral current is formed owing to a protruding part at the center of the baffle plate 12. Then, a part of steam passes through a connecting pipe connected to the side surface of the main body 7 is discharged to a steam pipe 2, sprayed from steam spray nozzles 4 and mixed with air-conditioned air. The rest of the steam is supplied to a heating pipe 5 in the steam pipe 2 through a connecting pipe 15 connected, to the upper surface of the main body 7, heats the steam in the steam pipe 2 and then exhausted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a humidifying apparatus, and more particularly to a humidifying method and apparatus suitable for use in combination with an air conditioner for a wide area such as a building.

[0002]

2. Description of the Related Art Conventionally, there is a known humidifying device which is combined with an air conditioner to appropriately maintain the humidity of a large space such as a building so that the air blown out from the air conditioner is given an appropriate humidity. It is. Humidification methods for such a humidification device are roughly classified into two methods, a method of giving moisture by atomizing water and a method of giving moisture by steam. Water can be atomized by spraying it from a nozzle to atomize it.
A method of dropping water droplets on a rotating disk at high speed, a method of passing water through a cloth, a method of atomizing with ultrasonic waves, and the like are known.However, in order to humidify a large space such as a building, a duct by water droplets is used. Corrosion occurred and the efficiency was poor and not suitable.

[0003] In the humidification method using steam, steam is directly charged into an air-conditioning duct.
It is most important that water droplets do not fly. In the conventional humidifier using steam, the steam in the steam pipe is insufficiently heated, so that the steam is likely to become water droplets in the steam pipe, and the structure of the steam ejection nozzle is such that the ejected steam easily entrains the water drops.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a humidifying method and apparatus for providing moisture with steam. The humidifying method has a good heating efficiency for steam in a steam pipe and effectively prevents steam from being dewed and turned into water droplets. In addition, it is possible to prevent humidification by using steam having a high degree of dryness without the risk of water droplets in the steam pipe being caught in the ejected steam.

[0005]

In order to solve the above-mentioned problems, the present invention adopts a method in which steam from which water droplets are separated and removed is supplied to a steam pipe, and the steam is supplied to a heating pipe arranged in the steam pipe. The steam is supplied by a circuit different from the steam supply circuit to the pipe, and while the steam in the steam pipe is heated by the heating pipe, the steam is blown out from the steam jet nozzle provided in the steam pipe to the conditioned air, and the conditioned air is supplied to the predetermined air. It is characterized by being humidified by humidity.

[0006] Further, the present invention is characterized in that water droplets are separated by a spiral flow by a spiral plate and a baffle plate.

Further, the present invention is characterized in that the steam in the steam pipe is directly heated by a heating pipe.

Further, the separator comprises a separator for separating water droplets from the steam, a steam pipe having a plurality of steam jet nozzles, and a heating pipe disposed in the steam pipe. Is connected to a separator or a steam source by a circuit different from the steam pipe.

[0009] Further, the steam jet nozzle attached to the steam pipe is slightly extended into the steam pipe.

[0010] The apparatus further includes a cylindrical main body, a spiral plate disposed substantially at the center of the main body, and a baffle plate disposed close to the inner bottom surface of the main body. , The steam is lowered as a spiral flow along the inner peripheral surface of the main body, and the steam is raised above the spiral plate by a baffle plate.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below. In the figure, (1) is a separator connected to a steam source, which separates and removes water droplets from steam from the steam source, and makes the steam dry. (2)
A steam pipe connected to the separator (1), which is connected to the separator (1) via a pressure regulating valve (3). A plurality of steam jet nozzles (4) are arranged in the steam pipe (2) at intervals in the longitudinal direction. A small-diameter heating pipe (5) is provided inside the steam pipe (2). The heating pipe
The pipe (5) is folded back at the closed end of the steam pipe in the steam pipe (2), and one end is connected to the separator (1), and the other end is connected to the exhaust pipe (6).

The separator (1) has a cylindrical main body (7), and a spiral plate (8) is fixed at a substantially central portion inside the main body (7). At the center of the spiral plate (8), a steam outlet pipe (9) penetrating vertically is fixed. As shown in the figure, the spiral plate (8) has a shape in which one disk is cut into a spiral shape, and a steam introduction pipe (10) is fixed between the cut portions. The steam introduction pipe (10) is closed at its tip, has a steam outlet (11) opened on the side face, and has the other end extending outward through the side wall of the main body (7) and connected to the steam source. You. The steam outlet (11) is opened so as to blow steam toward the lower surface of the spiral plate (8), and has a slightly downward angle so as to be directed in a direction parallel to the inclination of the spiral plate (8). ing. The steam blown out from the steam outlet (11)
It flows along the lower surface of (8) and forms a spiral flow and descends along the inner surface of the main body (7).

As shown in FIG. 4, the spiral plate (8), the lead-out pipe (9) and the steam introduction pipe (10) are joined together to form a unit, and are charged into the main body (7) as a unit from above. And fixed to the main body (7). The unitization of the spiral plate (8), the outlet pipe (9), and the steam introduction pipe (10) facilitates assembling these parts and mounting them in the main body (7).

A baffle plate (12) is fixed to the inner bottom of the main body (7) so as to float slightly upward from the inner bottom, and the baffle plate (12) is formed in a protruding shape whose center rises upward. Is formed. The spiral flow of steam that has descended along the inner surface of the main body (7) collides with the baffle plate (12) to separate water droplets, and at the same time, a narrow protrusion upward due to the central projection of the baffle plate (12). It rises as a spiral flow and passes through the outlet pipe (9) and enters above the main body (7). The water droplets separated by the baffle plate (12) form drain holes (13) formed in the lower surface of the main body (7).
Is discharged to the outside. After passing through the lead pipe (9), the body
Part of the steam entering the upper part of (7) flows out to the steam pipe (2) through the connecting pipe (14) connected to the side of the main body (7),
The steam is jetted from the steam jet nozzle (4) of the steam pipe and mixed with the conditioned air. The remainder of the steam is sent to the heating pipe (5) in the steam pipe via the connecting pipe (15) connected to the upper surface of the main body (7), and after heating the steam in the steam pipe, the exhaust pipe (6)
Is discharged from

The separator (1) has a water droplet separation effect in which the formation of a spiral flow by the spiral plate and the water droplet separation operation by the baffle plate are synergistic. That is, as shown in FIG. 11, the water droplet separation effect by the spiral flow has the efficiency shown by the line A (thin solid line), and the effect is maximized at a specific steam flow velocity. On the other hand, the water drop separation effect of the baffle plate
(A thin solid line), and has a substantially constant effect irrespective of the speed. The separator (1) of the present invention, in which the spiral flow and the baffle plate are combined, exhibits the effect of the line C (thick dotted line) that combines the effects of both the spiral flow and the baffle plate, and is extremely good without being affected by the speed of the steam flow. There is an advantage that a water droplet separation effect can be exhibited.

[0016] A steam jet nozzle disposed in the steam pipe (2)
(4) has a rivet-like structure slightly projecting into the inside of the steam pipe (2) as shown in FIGS. 9 and 10, and after inserting a nozzle body having a slightly smaller diameter than the nozzle mounting hole into the nozzle mounting hole. Increase the diameter and fix it in the nozzle mounting hole. The heating pipe (5) is a steam pipe
Since it is located inside (2) and the steam in the steam pipe comes into direct contact with the heating pipe, the heating efficiency is high. The heating pipe (5) is connected directly to the separator (1) and is separated from the steam pipe to the steam pipe (2) whose pressure is adjusted by the pressure adjusting valve (3). Even if the pressure of the steam is regulated by the pressure regulating valve (3), the heating pipe
The steam sent to (5) is not regulated. Therefore, the steam in the heating pipe can be kept at a high temperature,
Good heating efficiency of steam in the steam pipe. In addition, heating pipe (5)
Need not be connected to the separator as shown in the figure, and may be directly connected to the steam source without releasing the separator.

As shown in FIG. 9, the steam ejection nozzle (4)
By protruding inward of the steam pipe, even if there is a water drop that has been exposed on the inner wall of the steam pipe, there is no possibility that the water drop is caught in the steam ejected from the steam ejection nozzle and ejected.

As described above, according to the humidifier of the present invention, the steam supplied to the steam pipe and the steam supplied to the heating pipe are steams having substantially different steam sources. The steam in the pipe can be heated by the high-temperature steam in the heating pipe, and since the water droplets generated in the steam pipe do not squirt with the steam from the steam squirting nozzle, the steam squirting from the steam squirting nozzle must be dry. High steam. Such high-dryness steam is easily mixed with the conditioned air and absorbed by the air, so that water droplets do not exist in the conditioned air, so that corrosion of the duct and the like can be avoided.

[0019]

According to the present invention, the heating efficiency of the steam in the steam pipe is good, and it is possible to effectively prevent the steam from being dewed and formed into water droplets. Humidification can be performed using steam having a high degree of dryness without the possibility of being caught.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a humidification method of the present invention.

FIG. 2 is a longitudinal sectional view of a separator.

FIG. 3 is a sectional view taken along the line A-A 'of FIG. 2;

FIG. 4 is a perspective view of a spiral plate.

FIG. 5 is a plan view of a spiral plate.

FIG. 6 is a front view of a spiral plate.

FIG. 7 is a right side view of the spiral plate.

FIG. 8 is a perspective view of a steam ejection nozzle.

FIG. 9 is a sectional view taken along the line B-B ′ of FIG. 9;

FIG. 10 is a side view of a steam ejection nozzle.

FIG. 11 is a graph showing the effect of a separator.

[Explanation of symbols]

 (1) Separator (2) Steam pipe (3) Pressure control valve (4) Steam jet nozzle (5) Heating pipe (6) Exhaust pipe (7) Main body (8) Spiral plate (9) Outgoing pipe (10) Steam introduction Pipe (11) Steam inlet (12) Baffle plate (13) Drain hole (14) Connection pipe (15) Connection pipe

Claims (8)

[Claims] (1) A steam from which water droplets are separated and removed is sent to a steam pipe, and steam is sent to a heating pipe arranged in the steam pipe by a circuit different from a steam feeding circuit to the steam pipe. A humidifying method characterized in that the steam in a steam pipe is heated by a heating pipe, and is jetted from a steam jet nozzle provided in the steam pipe into conditioned air to humidify the conditioned air to a predetermined humidity. 2. The humidifying method according to claim 1, wherein water droplets are separated by a spiral flow by the spiral plate and the baffle plate. 3. The humidifying method according to claim 1, wherein the steam in the steam pipe is directly heated by a heating pipe. 4. A separator for separating water droplets from steam, a steam pipe provided with a plurality of steam ejection nozzles, and a heating pipe disposed in the steam pipe. A humidifier, wherein the humidifier is connected to a separator or a steam source by a circuit different from the steam pipe. 5. The humidifying device according to claim 4, wherein the separator separates water droplets by a spiral flow of the spiral plate and the baffle plate. 6. The humidifier according to claim 4, wherein the heating pipe is disposed in the steam pipe, and the steam in the steam pipe is brought into direct contact with the heating pipe for heating. 7. The humidifier according to claim 4, wherein the steam jet nozzle attached to the steam pipe slightly extends into the steam pipe. 8. A spiral body provided with a cylindrical main body, a spiral plate disposed substantially at the center of the main body, and a baffle plate disposed close to an inner bottom surface of the main body. A separator for a humidifier, wherein steam is dropped as a spiral flow along the inner peripheral surface of the main body and is raised above the spiral plate by a baffle plate.