JP2765914B2 - Humidifier - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a humidifier capable of efficiently connecting a plurality of humidifiers to use water for use.

<Prior Art> A general air conditioning system incorporates a humidifier for keeping air at a suitable humidity. As one of such humidifiers, for example, an ultrasonic humidifier is known,
By oscillating water in a thin film state or the like with ultrasonic waves, the water is scattered as fine water droplets in the air to perform humidification.
Therefore, in this case, since there is no need to directly humidify the water for humidification in advance, the energy used can be reduced.However, since the method is such that fine water droplets are generated by mechanical vibration and mixed into the air, the generated water droplets are generated. Various foreign substances can be mixed in the water droplet. In fact, scales such as calcium are mixed in the water droplets, and these scales appear as powder in the air as the water droplets evaporate, or fall on the floor or the like to pollute the environment.

In addition, if harmful substances such as bacteria are mixed in water droplets, there is a problem that these harmful substances are widely carried along with the diffusion of water droplets.

For this reason, conventionally, a humidifier 11 utilizing spontaneous evaporation as shown in FIG. 3 has been used. That is, in this humidifier 11,
Many corrugated plates 12 having a corrugated cross section are superposed in layers, and water flowing down along the corrugated surface of the corrugated plate 12 is supplied to an upper end side of the corrugated plate 12 from a discharge port (not shown). A discharge pipe 13 is provided. Also corrugated plate 12
A water receiving container 14 for receiving water flowing down along the corrugated plate 12 is provided at a lower end side of the water receiving container 14. The humidifier 11
A supply pipe 15 for supplying fresh water is connected via a valve 16, and the base end side of the discharge pipe 13 is fixed in a state of being inserted into water in the water receiving container 14. .
In the middle of the discharge pipe 13, the water in the water receiving container 14 is discharged.
There is provided a pump 17 for pressure-feeding to the end side of the pallet and supplying it to the corrugated plate 12.

Therefore, the water supplied from the supply pipe 15 into the water receiving container 14 flows through the discharge pipe 13 with the operation of the pump 17 and the corrugated plate 12
Is discharged from a discharge port (not shown) provided in the discharge pipe 13 located at the upper end of the corrugated plate 12 and flows down along the surface of the corrugated plate 12 while forming a thin water film. At this time, air 18 guided from a duct or the like (not shown) flows through the gap of the corrugated plate 12 and passes while contacting the surface of the water film described above.
The water spontaneously evaporates into the air 18 from the water film and humidifies the air. In this way, the water flowing down the corrugated plate 12 is always in a state of forming a thin water film, and humidifies by spontaneous evaporation of the water into the air that comes into contact with the surface of the water film. There is no fear that the scale or the like dissipates in the air. In addition, water that has reached the downstream end of the corrugated plate 12 without being humidified flows down into the water receiving vessel 14 as it is, is mixed with fresh water supplied from the supply pipe 15, and is again guided to the discharge pipe 13 for circulation. I do. However, in such a humidifier 11 of a so-called circulation type, the water receiving container 14
The water inside will be increasingly polluted. This is because the water flowing down the corrugated plate 12 rapidly absorbs dust and the like in the air that comes in contact with the water, and the scales and the like mixed in the supply water from the beginning are accumulated without being discharged to the outside. Because they are just

For this reason, consideration has been given to always discharging a part of the water in the water receiving container 14 to the outside to suppress an increase in the concentration of the scale and the like. That is, as shown in the figure, a discharge pipe 19 for discharging a part of water flowing in the discharge pipe 17 to the outside is connected to the discharge pipe 13 on the downstream side of the pump 17 and the discharge pipe 19 is connected to the discharge pipe 19.
A valve 20 for adjusting the amount of discharged water is interposed midway. In another type of humidifier, humidification is performed by allowing water to naturally evaporate while flowing down the corrugated plate 12, and then the remaining water is mixed with fresh water again, circulated and reused without reusing. There is also a so-called once-through type that discharges water.

By the way, the humidifier 11 using natural evaporation as described above
In the case where a plurality of are connected and installed, conventionally, for example, a configuration as shown in FIG. 4 has been used. In other words, a plurality of units (3 in the figure)
In the example in which the humidifier 11 is provided, first, a supply main pipe 22 for guiding water for humidification is provided to penetrate each floor, and is branched from the supply main pipe 22 for each floor to supply each humidifier 11. tube
A branch supply pipe 23 communicating with each of the fifteen is provided. Drainage main pipe for guiding drainage discharged from each humidifier 11
24 are provided through each floor, and a branch discharge pipe 25 branching from the drain main pipe 24 and communicating with each of the discharge pipes 19 of each humidifier 11 is provided for each floor. Further, in order to adjust the amount of water supplied to the entire humidifier 11, a main valve 26 is provided at the most upstream end side of the main supply pipe 22, and a valve 27 for adjusting the amount of water supplied to each floor is provided with a main supply pipe. It is provided on a branch supply pipe 23 located in the immediate vicinity of a branch portion with the branch 22.

If the humidifier 11 is connected and configured as described above, first, humidifying water flows from the supply source (not shown) in the supply main pipe 22 while the amount of water is adjusted by the main valve 26, and is further branched and provided for each floor. The water is divided and flows into the supply pipe 23, and is supplied to each humidifier 11 to perform humidification. After this, the pump
In the humidifier 11 of the type in which water is circulated by 17, a part of the circulating water is discharged, and in the humidifier 11 of the type in which the corrugated plate 12 flows down and then is discharged without circulation, the entire amount is It flows into 23, and further joins at the discharge main pipe 24 to be discharged to the outside.

<Problems to be Solved by the Invention> As one type of a conventional humidifier utilizing natural evaporation, there is the so-called circulation type described above. This is to mix the water provided for humidification with fresh water while flowing down the corrugated plate 12 and supply it to the corrugated plate 12 again to circulate, but at this time, remove the scale gradually accumulated in the circulating water Therefore, a part of the circulating water must be discharged to the outside. However, the amount of discharged water greatly changes depending on the degree of contamination of the air used by the humidifier 11. Because, if the air is very dirty, dust and the like mixed into the circulating water will increase.To keep the circulating water contamination concentration below a certain allowable value, always discharge more circulating water to the outside. Because it must be. Therefore, in general, the above-mentioned discharged water amount is set to be much larger than a necessary amount in order to cope with a change in the use condition of the humidifier 11 and the like, so that the waste water is extremely wasteful. In addition, in order to prevent such circulating water contamination and to achieve a simple apparatus configuration, the so-called once-through humidification described above, which discharges the entire amount of water after flowing down the corrugated plate 12 and subjected to humidification. Vessel 11 is used,
In this case, all of the water that can be sufficiently reused will be discarded, so it must be said that the configuration is extremely inefficient.
Further, if a plurality of such humidifiers 11 are connected as shown in FIG.
There is a problem that the above-mentioned extremely inefficient use of the used water is not improved at all because it is simply collected and discharged.

<Means for Solving the Problems> A humidifier according to the present invention includes a plurality of humidifiers for humidifying the air by allowing water to spontaneously evaporate into air by flowing water in a film form and the humidifier. A plurality of supply pipes for supplying the water to each of the humidifiers, a plurality of discharge pipes through which drainage discharged from each of the humidifiers flows, a plurality of the supply pipes and a plurality of the discharge pipes are connected to each other, And a water pipe through which the water is supplied to the supply pipe and drainage from the discharge pipe is poured.

<Operation> Water for humidification flows through the water pipe, and is supplied to the humidifier through a supply pipe branched from the water pipe. The supplied water gradually evaporates naturally into the air while flowing down in a humidifier in the form of a film to humidify the air. Part or all of the supply water left without being used for humidification by the humidification air flows into the water pipe through the drain pipe and merges with the supply water.
The merged water is supplied again to the humidifier via the supply pipe, and after being humidified as described above, flows again into the water pipe via the drain pipe.

<Embodiment> Hereinafter, an embodiment of the humidifier according to the present invention will be described in detail with reference to the drawings. It is to be noted that the same members as those of the above-described conventional technology are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in this embodiment in FIG. 1, water for humidification is supplied to a plurality of (three in this example) humidifiers 11 provided on each floor of a building 21 having a plurality of floors (three in this example). And a drain pipe 31 for discharging drainage from the humidifier 11 to the outside is provided through each floor. In addition, a branch supply pipe 23 for guiding humidifying water to the humidifier 11 provided on each floor is connected to the water pipe 31 of each part located on each floor, and the water is discharged from these humidifiers 11. And a branch discharge pipe 25 for guiding waste water to be discharged. Further, the supply pipe 15 and the discharge pipe 19 of the humidifier 11 provided on each floor are respectively connected to the branch supply pipe 23 and the branch discharge pipe provided on each floor, and the humidifier 11 is humidified. Water is supplied from the humidifier 11 while drainage water is supplied. The water supply pipe 31 and the branch supply pipe 23 are connected to the branch supply pipe.
It is connected via an adjustment tank 32 for adjusting the flow rate of the supply water flowing into 23.

Accordingly, water supplied to each humidifier 11 from a supply source (not shown) provided on the rooftop of the building 21 via the water supply pipe 31 and the branch supply pipe 23 is partially consumed for humidification, and is supplied to the air. Absorption of dust, etc., leads to gradual contamination. Therefore, part or all of the water flowing down the corrugated plate 12 of the humidifier 11
The water is discharged to the branch discharge pipe 25 via the drain pipe 19 of the humidifier 11.
However, this wastewater has a considerably lower concentration than the allowable pollution concentration, that is, it is still reusable in consideration of a change in the use condition of the humidifier 11, and the like. The degree of this contamination is very low. Therefore, in the present invention, this drainage is not discharged to the outside by an independent drainage main pipe 24 as in the prior art, but is re-flowed into a water pipe 31 through which the water supplied to the humidifier 11 flows to provide a cleaner supply. The water is merged with the water and further led to the branch supply pipe 23 downstairs to be reused as new supply water, thereby to efficiently use the supply water. In addition, the waste water that has reached the lowermost end of the water pipe 31 through such a process is discharged to the outside through a drainage tank 33 provided at the lowermost end of the water pipe 31.

In addition, a flow meter 34 is provided in the water pipe 31 between the connection part of the branch discharge pipe 25 located at the lowermost position and the drainage tank 33, and the water pipe located upstream of the adjustment tank 32 located at the uppermost position is provided. The 31 is provided with a solenoid valve 35. This result is used to detect the amount of waste water finally discharged from the water pipe 31 with the flow meter 34, and to open and close the solenoid valve 34 according to the flow rate, to adjust the total amount of supply water, and to achieve the most efficient use. It can be controlled to realize the situation. Further, a pollution concentration detector (not shown) is provided in the drainage tank 33, and the contamination concentration of the finally discharged wastewater is detected by the detector, and the electromagnetic concentration is adjusted so that the value becomes substantially equal to the allowable contamination concentration value. By operating the valve 34, more efficient use of the supply water may be measured.

Hereinafter, a detailed configuration of the adjustment tank 32 will be described. That is, as shown in FIG. 2, a schematic cross section of a mounting portion of the adjusting tank 32 has a downstream end of the water pipe 31a at an upper end of the adjusting tank 32 in the direction of gravity (hereinafter, the lower side in the figure is referred to as the direction of gravity). Are linked. In the adjustment tank 32, a water pipe 31b is provided.
Upstream end side is inserted a predetermined length from and passing water pipe 31a in a state of projecting up and down by H ₁ in a non-concentric with penetrating the lower end portion of the adjusting tank 32. Further, one end of a branch supply pipe 23 is connected to the lower end of the adjustment tank 32, and a humidifier is provided.
One end of the branch exhaust pipe 25 drainage flows from 11, the water pipe 31b at a predetermined length H ₂ in the vertical and continuation of the branch supply pipes 23
It is connected to. An air hole 33 is provided at the upper end of the adjustment tank 32.
And a water pipe located in the adjustment tank 32
At the lower end of 31b, a small-diameter rainfall hole 34 for draining water is formed.

Accordingly, the supply water flows into the adjustment tank 32 from the water pipe 31a and is supplied to the humidifier 11 via the branch supply pipe 23,
Substantially stored until a constant water level height H ₁ and exceeds this level, the middle flow into water communicating tube 31b from the upper end of the water pipe 31b branched drain pipe supplying water in the adjusting tank 32 remains
It merges with the wastewater from 25 and flows down to the next adjusting tank 32. Therefore floor humidifier 11 will receive always head pressure of an H ₁ as a whole, it is the uniformity of the supply flow rate can be achieved.
The rain holes 34 are used for draining supply water stored in the adjusting tank 32 or residual water in the branch supply pipe 23 provided with a slight downward slope.

By the way, in the present embodiment, a pair of the branch supply pipe 23 and the branch discharge pipe 25 is provided for each floor in pairs, but of course, a plurality of pairs may be provided for each floor, and the division for each floor is for convenience only. In short, branch supply pipe for water pipe 31
By connecting a plurality of pairs of the pipe 23 and the branch discharge pipe 25, the drainage from the humidifier 11 can be combined with the water pipe 31 and reused. In this embodiment, the branch supply pipe 23 is connected to the water pipe 31 via the adjustment tank 32 described above.However, an orifice or a valve may be used instead of the adjustment tank 32. Branch supply pipe 23
It is only necessary to be able to keep the flow rate of the supply water flowing into the tank uniform.

<Effects of the Invention> According to the humidifier of the present invention, a plurality of supply pipes for supplying humidifying water to each of the plurality of naturally evaporating humidifiers, and a plurality of drainage pipes from each of the humidifiers. Are connected to a water pipe, and water for humidification is supplied from the water pipe to each of the humidified air, and wastewater discharged from each of the humidifiers is poured into the water pipe to supply water. And the combined water can be supplied to the humidifier via the supply pipe, so that the wastewater that was originally discharged in a reusable state is combined with the supply water and supplied to the humidifier again. Since it can be reused as water, it is possible to greatly reduce water consumption, simplify the piping configuration, and reduce manufacturing costs.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a humidifier according to the present invention, FIG. 2 is a schematic configuration sectional view showing an adjusting tank in this embodiment, and FIG. FIG. 4 is a perspective view showing one example, and FIG. 4 is a schematic configuration diagram showing one example of a conventional humidifier. In the drawing, 11 is a humidifier, 12 is a corrugated plate, 15 is a supply pipe, 19 is a discharge pipe, 23 is a branch supply pipe, 25 is a branch discharge pipe, 31 is a water pipe,
32 is an adjustment tank, 33 is a drain tank, 34 is a solenoid valve, and 35 is a flow meter.

Claims (1)

(57) [Claims] 1. A plurality of humidifiers for humidifying the air by allowing the water to naturally evaporate into air by flowing down the water in a film form, and a plurality of supplies for supplying the water to each of the humidifiers. A pipe, a plurality of discharge pipes through which drainage discharged from each of the humidifiers flows, a plurality of the supply pipes, and a plurality of the discharge pipes are connected to supply the water to the supply pipe and discharge the water. A humidifier comprising: a water pipe into which drainage from the pipe is poured.