JPH081318B2 - Steam humidifier for air conditioning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] In the present invention, in an air conditioner such as a tenant building, in order to improve comfort, the space to be air-conditioned for each tenant or each floor is humidified with steam separately. In more detail, an air conditioner is provided corresponding to each of the plurality of air-conditioned spaces, a low-pressure steam generator for generating low-pressure steam is provided, and the steam generated by the low-pressure steam generator is supplied to the air-conditioned space. The present invention relates to a steam-type humidifying device for an air-conditioning facility, which is configured to deliver to

[Conventional technology]

The low-pressure steam generator represented by a vacuum boiler has been recently developed for the purpose of facilitating handling.In the past, low-pressure evaporation was also transferred at the pressure inside the steam generator, just like high-pressure steam. Based on the common sense that such a thing is done, the generated steam was supplied to the air-conditioned space. In other words, in the transfer of low-pressure steam, the pressure inside the steam generator is as low as atmospheric pressure, so if the transfer distance becomes too long, most of the steam will condense and the efficiency will decrease significantly. Since the transfer distance is limited to about 2 m, it is necessary to install a steam generator near the supply position.To this end, prepare low-pressure steam generators in the same number as multiple air-conditioned spaces and The steam generator was installed corresponding to the air-conditioned space. As a specific example thereof, as shown in FIG. 3, a duct (1B) for supplying conditioned air from the air conditioner (1) to the corresponding air-conditioned space (A),
Nozzle (4) for ejecting steam into the duct (1B)
a) is provided, a low pressure steam generator (2) is installed near this nozzle (1a), and the low pressure steam generator (2) and the nozzle (4a) are connected by a steam supply pipe (4 '). Therefore, by operating the low-pressure steam generator (2), the generated steam is ejected from the nozzle (4a) by the pressure in the low-pressure steam generator (2), and the steam is air-conditioned together with the conditioned air (A). ) Has been designed to supply.

[Problems to be solved by the invention]

However, in the case of the above-mentioned conventional means, since the low-pressure steam generator is individually installed in each air-conditioning target space, the air-conditioning target space can be independently humidified by controlling the operation of each low-pressure steam generator. The same number of low-pressure steam generators as the air-conditioned space and a space for installing the low-pressure steam generators are required. As a result, the cost is high and it is very difficult to secure the installation space for the steam generators.

An object of the present invention is to make it possible to perform humidification with low pressure steam at low cost and advantageously in terms of installation space.

[Means for solving problems]

The present invention was made by focusing on the fact that steam can be efficiently transferred over a long distance by a fan like other gases, overcoming the conventional viewpoint that steam must be transferred at the pressure in the steam generator. Therefore, the characteristic configuration of the steam-type humidifying device of the air conditioning equipment according to the present invention is a fan for feeding the steam generated in the low-pressure steam generator, and the steam fed by the fan is distributed to a plurality of air-conditioned spaces. And a valve for opening / closing a branch pipe to each of the air-conditioned spaces of the divided pipe. The actions and effects of this are as follows.

[Action]

Since the generated steam is transferred by a fan instead of the pressure inside the low-pressure steam generator, the low-pressure steam generator generates low-pressure steam and the generated steam is generated regardless of its internal pressure.
It can be efficiently transferred to a long distance without being condensed, and it is not necessary to install the low-pressure steam generator near the air-conditioning target space to which the generated steam is sent, or the air-conditioner corresponding thereto. Moreover, since the low-pressure steam can be transferred to a plurality of air-conditioned spaces by utilizing the ability to transfer low-pressure steam to a long distance, the number of low-pressure steam generators installed can be smaller than the number of air-conditioned spaces. . To put it to the extreme, by preparing a low-pressure steam generator with the ability to humidify multiple air-conditioned spaces as a whole, the low-pressure steam generator is
One is enough. In addition, one low-pressure steam generator is provided for a plurality of air-conditioned spaces, that is, one low-pressure steam generator is shared among a plurality of air-conditioned spaces, but each air-conditioned space is Since the steam supply from the distribution supply pipe is controlled separately, it is possible to independently humidify each air-conditioned space.

〔The invention's effect〕

Therefore, according to the present invention, although the plurality of air-conditioned spaces can be independently steam-humidified by using the low-pressure steam generator, the number of low-pressure steam generators can be reduced, the cost is low, and the installation space is low. It became possible to carry out in an advantageous way.

〔Example〕

 Next, examples of the present invention will be described.

As shown in FIG. 1, it is an air-conditioning facility that individually air-conditions each floor of the building as an independent air-conditioning target space (A), which is provided for each air-conditioning target space (A). Air conditioner (1) for temperature control and ventilation for each target space (A)
And a steam-type humidifier.

The air conditioner (1) is provided with a fan coil unit (1A) for temperature control corresponding to each room (R) in the space (A) to be air-conditioned and uses the outside air as air for air conditioning. An air conditioning air supply duct (1B) with a fan (1b) that distributes and supplies to the unit (1A), and an air conditioning air supply duct (1C) that supplies conditioned air from the fan coil unit (1A) to the room (R) , A return air duct (1D) that sends indoor air from the room (R) to the fan coil unit (1A) and an exhaust duct (1E) with a fan (1e) that discharges indoor air to the outside A total heat exchanger (1F) for exhaust heat recovery that exchanges heat between the outside air and the exhaust is provided. The fan / coil unit (1A) may be either a direct expansion type or a type that performs heating / cooling with hot water or cold water. Also, the exhaust path from each room (R) to the exhaust duct (1E) is located in the exhaust path (1G) under the floor.
And the exhaust duct (1E) through the exhaust passage (1G) through a hot water chamber or a toilet (R ') that does not require air conditioning.
It is configured to communicate with.

In the humidifier, one low-pressure steam generator (2) for generating low-pressure steam is installed on the same floor as the lowest floor in the air-conditioned space (A), and the low-pressure steam is generated. Fan (3) for feeding steam generated in the vessel (2)
And a distribution pipe (4) for distributing the steam supplied by the fan (3) to the air conditioning target space (A) on each floor, and supplying steam from the distribution pipe (4) to each air conditioning target space (A). It is configured by providing a control means for individually controlling.

The low-pressure steam generator (2) generates steam at atmospheric pressure of 100 ° C. by heating the supplied water with an electric heater.

The distribution pipe (4) does not directly supply steam into the air conditioning target space (A), but inside the air conditioning air supply duct (1B) of the air conditioner (1) corresponding to the air conditioning target space (A). The steam is ejected from the nozzle (4a) to the air conditioner, and more specifically, the rigid pipe (4
A), a connecting pipe (4B) for connecting the lower end of the rigid pipe (4A) to the low-pressure steam generator (2), and a nozzle (4a) for the air-conditioned space (A) on each floor. It is composed of a branch branch pipe (4C) to be connected to (an example of a branch pipe part).

The branched branch pipe (4C) is a solid pipe (4A) for the condensed drain.
The drain discharge pipe (4D) is connected to the lower end of the rigid pipe (4A) through an S-shaped trap (4b).

Of course, the rigid tube (4A) is covered with a heat insulating material to suppress vapor condensation.

The control means is a branch branch pipe (4C) of the distribution pipe (4).
Each is equipped with an electric ball valve (5), a humidity detection sensor (6) is provided in each of the exhaust paths (1G) of the air-conditioned space (A), and based on the detection information of the humidity detection sensors (6). And a control panel (7) for controlling the opening and closing of each of the electric ball valves (5) so that the humidity of the air-conditioned space (A) corresponding to the humidity detection sensor (6) becomes a set humidity. ing.

An electric ball valve (5) is installed in the branch pipe (4C).
Bypass pipes (8) for bypassing the valve are connected to the bypass pipes (8), and a manually operated valve (9) for ensuring steam supply when the electric ball valve (5) fails is interposed. There is.

Further, the nozzle (4a) is incorporated in a duct material forming an air conditioning air supply duct (1B) as shown in FIG.

[Another embodiment]

 Another embodiment of the present invention will be described below.

[1] In the above embodiment, one low-pressure steam generator (2) is provided for all of the air-conditioned space (A), but of course, a plurality of low-pressure steam generators (2) may be provided for implementation. Is also good.

[2] In the above embodiment, the steam is supplied to the air conditioning air supply duct (1B) to indirectly supply the steam to the air conditioning target space (A), but the steam is directly supplied to the air conditioning target space ( It may be supplied to A).

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

1 and 2 show an embodiment of a steam-type humidifying device for air conditioning equipment according to the present invention, FIG. 1 is a piping system diagram, and FIG. 2 is a schematic cross-sectional view of a main part. FIG. 3 is a piping system diagram showing a conventional example. (A) ... Air-conditioned space, (1) ... Air conditioner, (2) ...
… Low pressure steam generator, (3) …… Fan, (4) …… Distribution pipe, (4C) …… Branch pipe, (5) …… Valve.

Claims (1)

[Claims] 1. An air conditioner (1) is provided for each of a plurality of air-conditioned spaces (A), a low-pressure steam generator (2) for generating low-pressure steam is provided, and the low-pressure steam generator (2) is provided. ), The fan (3) for sending the steam generated by the low-pressure steam generator (2) in an air conditioning facility configured to send the steam generated by the low pressure steam generator (2) to the space (A) to be air-conditioned. ,
A distribution pipe (4) for distributing the steam supplied by the fan (3) to a plurality of air-conditioned spaces (A), and
A steam humidifier for air conditioning equipment, which is provided with a valve (5) for separately opening and closing a branch pipe (4C) to each of the air conditioning target spaces (A) in the distribution pipe (4).