JPH05292845A - Local air-conditioner in water culture facility - Google Patents

Abstract

PURPOSE:To air-condition only the neighborhood of vegetables and maintain the temperature of the nutritive solution by introducing the air-conditioning air blown onto water-culture beds through an air-flow guide into a half-sealed space and returning the air to the suction opening of an air-conditioner. CONSTITUTION:The air-conditioning air from an air-conditioner 5 is blown through a delivery side duct 2 onto each water culture bed 1 and introduced through an air flow guide 3 into a half-sealed space under the water culture bed. The return side duct 7 is connected to the suction opening of the air- conditioner so as to recycle the air introduced into the half-sealed space to the air-conditioner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a local air conditioner for a hydroponic cultivation facility used in a plant factory or the like.

[0002]

2. Description of the Related Art Conventionally, some air conditioning in a plant cultivation facility such as a plant factory has been attempted to be locally air-conditioned, but it has been performed by air conditioning the entire building. An example thereof is a cooling device for greenhouses (Japanese Patent Laid-Open No. 52-121951).

[0003]

As described above, since the conventional apparatus has been designed to air-condition the entire building, it will also air-condition a space that is not directly related to the production of plants. There was a problem that it was bulky and that a cooling / heating machine was necessary to maintain the nutrient solution temperature.

In view of the above-mentioned state of the art, the present invention intends to provide an apparatus capable of air-conditioning only the vicinity of a plant and maintaining the temperature of the nutrient solution by using the residual cooling / warming air.

[0005]

Means for Solving the Problems The present invention is a means for blowing conditioned air onto a hydroponic bed from a sending duct connected to an outlet of an air conditioner, and the conditioned air blown to the lower part of the hydroponic bed. A local air conditioner for a hydroponic cultivation facility, comprising an air flow guide for guiding the provided semi-enclosed space and a return duct connected to the semi-enclosed space and a suction port of the air conditioner. Is.

To explain the present invention in more detail, the air outlet of the air conditioner is connected to a duct or the like, the conditioned air is drawn through the duct or the like to the vicinity of the hydroponic bed, and this air is fed to the hydroponic bed. By directly spraying the air on top, connecting the suction port of the air conditioner to a duct, etc., and connecting this to the space under the semi-sealed hydroponic bed, the pressure under the hydroponic bed is reduced and hydroponic cultivation is performed. An opening is provided in the space under the bed other than the duct hole connected to the intake port of the air conditioner, so that much air on the hydroponic bed is sucked into the space under the hydroponic bed, and this air is semi-sealed. It is constructed so that it is sucked into the air conditioner through the space under the cultivation bed or through a duct or the like.

[0007]

[Operation] The air discharged from the outlet of the air conditioner through the duct etc. onto the hydroponic bed does not spread greatly and flows to the inlet to the space below the hydroponic bed, so Air flows only through it and acts to locally air-condition.

The air sucked under the hydroponic bed also air-conditions the space under the hydroponic bed and plays a role of maintaining the temperature of the hydroponic solution through the bottom of the hydroponic bed.

Further, the air sucked into the air conditioner is passed through a duct or the like to be taken in from the space under the hydroponic bed, so that the hydroponic culture is carried out through an opening partly provided in the space under the hydroponic bed which is semi-sealed. The function of sucking the air on the bed under the hydroponic bed and the function of improving the efficiency of the air conditioner by sucking the air with a relatively low temperature during cooling and a relatively high temperature during heating. To do.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a perspective view of the whole, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof. 1 to 3, 1
Is a hydroponic bed, 2 is a duct for sending air from an air conditioner, which will be described later, and 3 sucks air on the surface of the hydroponic bed 1 into the space under the hydroponic bed 1 to make the flow uniform and stable. Air flow guide 4 to make the feed side duct 2 a duct support component for supporting the duct 2, 5 an air conditioner, 6 a hydroponic bed 1
A covering material surrounding the lower space, 7 is a return duct connecting the space under the hydroponic bed 1 to the suction part of the air conditioner 5, and 8 is an aid for sucking into the air conditioner 5, and one surface of the hydroponic bed It is a blower that also promotes the intake of clean air, and is provided as needed.

The air discharged from the outlet of the air conditioner 5 passes through the feed duct 2 and flows through the micro holes (not shown) formed in the feed duct 2 onto the hydroponic cultivation bed 1. The suction port of the air conditioner 5 is connected to the space under the hydroponic cultivation bed 1 surrounded by the covering material 6 via the return duct 7, and the air in the space under the hydroponic cultivation bed 1 is connected to the air conditioner 5 The space under the hydroponic bed 1 is depressurized by sucking from the suction port of the, and as a result, the air on the hydroponic bed 1 passes through the air flow guide 3 to the space under the hydroponic bed 1. Be sucked. Here, the air flow guide 3 determines the direction of the air to be sucked, and serves to make it easier to suck the air on the hydroponic cultivation bed 1. In this way, the air flowing from the sending side duct 2 onto the hydroponic cultivation bed 1 flows into the space under the hydroponic cultivation bed 1 through the air flow guide 3, and passes through the return side duct 7 to the air conditioner 5 Go into the suction mouth. Further, with this alone, since the suction capacity of the air conditioner 5 is reduced on the side of the return side duct 7 in the space under the hydroponic bed 1, the air collects, a local temperature distribution is generated, and The air suction capacity on the hydroponic bed 1 that passes through the flow guide 3 may also decrease.
In order to prevent this, the blower 8 is installed in the space under the hydroponic bed 1 on the side opposite to the insertion port of the return side duct 7 or at several places as needed, and local temperature distribution and
It is preferable to prevent a decrease in the ability of sucking air into the space under the hydroponic cultivation bed 1 that passes through the air flow guide 3.
Further, if the sending duct 2 is partially adhered to the duct support component 4 and the air conditioner 5 is temporarily stopped so that the sending duct 2 is deflated, the sending duct 2
The existing space can be used as a passage, and there is an advantage that the duct does not fall down.

Next, to explain the effect of this embodiment, first, the air blown out from the micro holes of the feed duct 2 onto the hydroponic bed 1 directly hits the hydroponic bed 1 and the air flow. The guide 3 sucks a large amount of air on the hydroponic bed 1 so that the air discharged onto the hydroponic bed 1 flows only on the hydroponic bed 1, and only the hydroponic bed 1 can be efficiently air-conditioned. Since the space not related to plants does not need to be air-conditioned, the cooling efficiency is high and running costs can be reduced.

Secondly, the air flowing into the space under the hydroponic bed 1 only air-conditions the hydroponic bed 1.
Air conditioning capacity still remains. The air that has flowed into the space under the hydroponic bed 1 has air-conditioning capacity and air-conditions the space under the hydroponic bed 1, and at the same time, the temperature of the hydroponic solution passes through the bottom of the hydroponic bed 1. It plays the role of holding, the equipment for holding the temperature of the hydroponic solution becomes unnecessary, and the load amount can be reduced.

Thirdly, since the air conditioner 5 sucks the air in the space under the hydroponic cultivation bed 1 which has the air conditioning capacity, the air conditioner 5 sucks the air having a low temperature during cooling and the air having a high temperature during heating.
The air-conditioning efficiency of the air conditioner 5 is increased because the air is sucked in.

Fourthly, the space under the hydroponic bed 1 has a large cross-sectional area, pressure loss is less likely to occur when sucking from the air conditioner 5 through the return duct 7, the flow becomes smooth, and the discharge amount of the air conditioner 5 becomes small. Can be prevented.

Fifth, by using the ducts 2 and 7, the air can be intensively flowed, so that a large air conditioner can be used and the equipment cost can be reduced as compared with the case where a large number of small air conditioners are used.

Sixth, since a part of the plant cultivation facility is locally air-conditioned, the maximum air-conditioning load is reduced, so that an air conditioner with low capacity can be used, and the equipment cost of the air conditioner can be reduced.

Seventhly, it is effective to apply moderate wind to promote the growth of plants, but when air conditioning the entire conventional plant cultivation facility, wind is strong near the air conditioner. ,
It can be distributed in the strength of the wind that hits the plant such that it is weak in the distant place, and there is a high possibility that it will be distributed in the growth of the plant. The device of the present invention can appropriately design the strength of the wind hitting the plant by arbitrarily changing the diameter of the minute holes in the sending duct 2, and by changing the position of the minute holes, it can be sprayed at any place. Moreover, the air on the hydroponic bed 1 can be supplied to the hydroponic bed 1 via the air flow guide 3.
By pulling into the space below, the distribution of wind strength can be almost eliminated, and plants can be grown uniformly and while promoting growth.

[0019]

As described above in detail, according to the present invention, compared with the conventional air-conditioning of the entire plant cultivation facility, by efficiently air-conditioning only the vicinity of the plant, the power consumption for air-conditioning can be reduced. The temperature of the nutrient solution can be maintained. Further, various effects shown in the embodiments can be obtained.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an embodiment of a local air conditioner for a hydroponic cultivation facility of the present invention.

2 is a front view of the apparatus of FIG.

FIG. 3 is a side view of the device of FIG.

Claims (1)

[Claims] 1. A means for blowing air-conditioned air onto a hydroponic bed from a sending duct connected to an outlet of an air conditioner, and a semi-enclosed space provided under the hydroponic bed with the blown air-conditioned air. A local air conditioner for a hydroponic cultivation facility, comprising: an air flow guide for inducing to an air conditioner; and a return side duct connected to the semi-enclosed space and a suction port of the air conditioner.