JP2001215027A - Air conditioning system for building for stable and plantation room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system capable of obtaining excellent cooling effect and humidifying effect as the air conditioning system for a building for a stable and a plantation room. SOLUTION: When a house 1 is evacuated with a fan 3 provided therein, the house 1 becomes negative pressure therein to introduce fresh air into the house 1 through an air permeable pad 7n of an evaporation/cooling apparatus 5. If hereupon fine water droplets or mists are blown from an spray nozzle 8b coupled with a water conduit 8a to an outer surface of the air permeable pad 7, heat of the fresh air is absorbed owing to contact with the water mists, and hence temperature is lowered with vaporization heat. In the present invention, there is used a self-supporting corrugated plate 7a of cellulose fibers where water resistant processing is applied to the air permeable pad 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-conditioning system used for agricultural buildings such as a piggery or a shiitake mushroom cultivation room for cooling and humidifying the inside of the building.

[0002]

2. Description of the Related Art Conventionally, the cooling of a livestock barn such as a piggery has been performed by using an inexpensive fan or ventilator since an expensive air conditioner such as an air conditioner cannot be adopted.

[0003] In the case of a cultivation room for shiitake mushrooms or the like in which humidity conditions greatly affect the yield, air having the temperature most suitable for the cultivation conditions is adjusted by a cooler or a heater and sent into the room to increase the growth of shiitake mushrooms. Various metabolic gases such as carbon dioxide excreted are reduced to a certain concentration that does not hinder the growth of shiitake mushrooms, and indoor air is circulated by a circulating fan etc. while these conditions are satisfied. The cultivation environment is adjusted according to the method. In particular, in cultivation of shiitake mushrooms, high humidity of at least 80% to 85% relative humidity is required. If humidification is required, an ultrasonic humidifier installed in one corner of the cultivation room is operated,
It is a general method to humidify to a preset humidity.

[0004]

For this reason, heatstroke and the like occur in livestock barns in summer due to an increase in temperature. There is a problem that oxygen deficiency is caused by the accumulation of heavy ammonia gas and carbon dioxide in the lower part of the barn, which causes the proliferation of bacteria and reduces the resistance of livestock (child pigs, etc.) in childhood and increases mortality. Was. Conventionally, humidifiers and circulating fans placed in a cultivation room are small in size, so that the convection of humidified air is uneven due to the small size. Otherwise there was a problem. An object of the present invention is to provide an air-conditioning system for a livestock barn and a cultivation room building that can obtain an excellent cooling effect and a humidifying effect and that is excellent in economic efficiency in view of the above problems.

[0005]

The air-conditioning system for a livestock barn and cultivation room building according to the present invention, which has achieved the above objects, comprises a plurality of livestock barns and cultivation room buildings provided at one end side in a closed space. A plurality of air permeable pads, exhaust means provided to face the air permeable pads, and fountain means for spraying fine water droplets or mist on the air permeable pads, each pad comprising a water-resistant cellulose fiber. It is a multi-porous body in which a plurality of self-supporting corrugated sheets are overlapped with a ridge, and the inside of the building is cooled by heat of vaporization generated when water attached to the air passage pad evaporates.

Further, the air-conditioning system for a livestock house and a cultivation room according to the present invention is a building for a livestock house and a cultivation room in a closed space, wherein a plurality of air-permeable pads installed at one end thereof, A plurality of self-supporting corrugated sheets each comprising exhaust means provided opposite to the permeable pad and fountain means for spraying fine water droplets or mist on the air permeable pad, each pad being made of water-resistant cellulose fiber. It is a multi-porous body superimposed on the ridges, wherein the inside of the building is humidified by fine water droplets or fog passing through the air passage pad.

The corrugated plate constituting the pad is formed at an angle of about 30 to 60 degrees, preferably at an angle of about 45 degrees, with respect to the bottom surface of the pad. However, it is characterized in that a nonwoven fabric made of polyethylene is subjected to a coating process or a lamination process with a synthetic resin.

[0008]

Next, an embodiment of the present invention will be described with reference to an embodiment shown in the drawings. The air-conditioning system of the present invention is particularly suitable for an elongated building 11 (see FIG. 4) such as a pig house, a poultry house, or a shiitake mushroom growing room.
It can also be used for other buildings with relatively open interiors.

[0009]

FIG. 1 shows a dome-shaped aggregate (not shown).
Exhaust means such as an exhaust fan 3 is attached to one end 2 in the longitudinal direction of the house 1 in which the space is covered by the covering sheet 1a to form a closed space. Then, an evaporative cooling device 5 comprising a ventilation means 6 having a plurality of air permeable pads 7 and a water spray means 8 is attached to the other end 4 of the house by an exhaust fan 3.
It is arranged so that it may face. The exhaust fan 3 discharges air from the house 1 to create a negative pressure in the house 1,
The outside air is taken in from the evaporative cooling device 5. By placing the exhaust fan 3 and the evaporative cooling device 5 as far apart as possible, a tunnel effect is created, and an air flow path is formed from one inside of the house 1 to the other. The exhaust fan 3 can be of any commonly known type. Here, as the covering sheet 1a, a tough and flame-retardant polyethylene nonwoven fabric (for example, Tyvex (trade name: manufactured by Asahi DuPont Flashpan Products Co., Ltd.)) is coated or laminated with a synthetic resin. Use things.

[0010] The evaporative cooling device 5 comprises a ventilation means 6 and a water spray means 8. As shown in FIG. 2, the ventilation means 6 has a plurality of air permeable pads 7 arranged in a vertical wall shape in a rectangular opening frame 6a for taking in outside air, and completely closes the opening frame 6a. As shown in FIG. 3, the air permeable pad 7 has a plurality of self-supporting corrugated plates 7a.
, And the inclination angle θ of the concave and convex strips of each corrugated plate 7a is formed at an angle of about 30 to 60 degrees, preferably about 45 degrees with respect to the base. The opposed corrugated plates 7a are overlapped at the ridges to form a honeycomb-shaped void. The corrugated sheet is made of water-insoluble cellulose paper. The standard dimensions of the air permeable pad 7 are about 150 cm in length, 30 cm in width, and about 10 cm in thickness.

The flow of the spray water adhering to the air permeable pad 7 is better as the inclination angle θ of the concave and convex strips is larger, but the void area becomes smaller at 30 degrees or less or 60 degrees or more, and the air permeability is impaired. Therefore, an angle of 45 degrees at which the air gap area is the largest is most desirable.

A water spray means 8 is arranged on the outer surface of the air permeable pad 7 for cooling the outside air taken in. The spraying means 8 includes a plurality of spraying nozzles 8b connected to a number of water pipes 8a connected to each other. The spray nozzle 8 b is arranged such that the central axis in the spray direction is perpendicular to the outer surface of the air permeable pad 7. The spray nozzle 8b is
Usually, it is desirable to arrange the space approximately 45 cm in both the vertical and horizontal directions, and to arrange the space approximately 75 cm away from the surface of the air permeable pad 7. If there is too much water coming out of the spray nozzle 8b, the effect of transferring thermal energy by evaporation is reduced, and the air permeable pad 7
It is important that the spray is as fine as possible, as it is too wet.

It is desirable that the water pipe 8a has three lines, that is, upper, middle, and lower, all of which are connected to each other. Of the three horizontal water pipes 11, the middle water pipe is provided with valves 8c at both ends, and only the middle water pipe is stopped so that the upper and lower water pipes can be operated. In this case, the spray amount of the middle water pipe is desirably larger than the spray amounts of the upper and lower water pipes. The preferred flow rate of the water and water pipe spray nozzles is about 2 liters per hour, while the preferred flow rate of the middle water pipe spray nozzles is about 4 liters per hour. The required flow rate can be changed according to the size of the house 1 for cooling.

In the air conditioning system of the present invention, water is supplied to the water pipe 8a and sprayed from the spray nozzle 8b until the temperature inside the house 1 is lowered. Stop supplying water when the temperature drops.
These operations can be performed manually.
It is desirable to provide a thermostat-based temperature control system inside and perform automatic control. In this case, when the internal temperature of the house 1 rises to a set value, water is automatically supplied and spraying starts. When the internal temperature drops to the set value, the water supply stops automatically. In addition, a temperature control system for sensing and controlling the external temperature only for the operation of the intermediate water pipe is provided.

[0015] The starting temperature of the control system based on the external temperature is set higher than the starting temperature of the internal control system so that the control system does not operate except when the ambient temperature becomes extremely high. For example, if the temperature at which the internal thermostat activates the spraying operation of the upper and lower water pipes is set to 28 ° C. and the external thermostat is set to 35 ° C., the intermediate water pipe can be activated only when the external temperature becomes extremely high. ,
When the temperature rise is negligible, water is saved and pad 7
To prevent excessive wetting. The size of the evaporative cooling device 5 is determined by the total length and the size of the house 1, but is preferably about 10% of the total length of the house 1.

In the air-conditioning system according to the present invention thus constructed, when the air is exhausted by the fan 3 of the house 1, the inside of the house 1 becomes negative pressure, and the outside air is introduced into the house 1 through the pad 7 of the evaporative cooling device 5. You. At this time, as shown in FIG. 2, if fine water droplets or mist is sprayed on the outer surface of the pad 7 from the spray nozzle 8b connected to the water pipe 8a, the heat of the outside air is absorbed by the contact with the spray water. The temperature decreases due to the heat of vaporization. Also, since the spray water on the verge of vaporization is partially taken into the house 1 with the outside air, the humidity in the room rises, but the temperature drops 12 ° C. below the outside temperature on average. For this reason, in a barn in summer, it is possible to prevent the occurrence of heatstroke and the like due to an increase in temperature. House 1
Since the inside is totally ventilated, it is possible to prevent heavy ammonia gas and carbon dioxide from staying in the lower part of the barn, thereby preventing oxygen deficiency and bacterial growth.
That is, there is no unevenness in the convection of the humidified air, so that the humidification state does not differ depending on the place even in the same room as in the related art, and the growth of shiitake and the like can be performed uniformly.

Further, the relationship between the external air intake speed and the static pressure when spray water is sprayed and when spray water is not sprayed is measured using the pad 7 having an angle of 45 degrees between the corrugated strips of the corrugated plate 7a. The change of the static pressure with the rise is substantially constant regardless of the presence or absence of the spray. This means that the pad 7 of the present invention
Indicates that the spray water does not hinder ventilation, and the power load on the fan 3 can be reduced. Therefore,
It is more economical than air conditioners such as air conditioners.

[0018]

As described above, the present invention is configured as described above.
There is an excellent effect that an excellent cooling effect and a humidifying effect can be obtained as an air conditioning system for a livestock barn and a cultivation room building.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a house according to the present invention.

FIG. 2 is a partially cutaway perspective view showing the evaporative cooling device.

FIG. 3 is a perspective view schematically showing a structure of a transmission pad.

FIG. 4 is a perspective view showing another embodiment of the building according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 House 1a Covering sheet 2 House end (exhaust fan side) 3 Exhaust fan 4 House end (evaporative cooling device side) 5 Evaporative cooling device 6 Ventilation means 6a Opening frame 7 Air permeable pad 7a Corrugated plate 8 Water spray means 8a Water supply Pipe 8b Spray nozzle 8c Valve

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01K 1/00 A01K 1/00 FZ

Claims (5)

[Claims] 1. A closed house for a livestock house and a cultivation room building, a plurality of air permeable pads provided at one end thereof, exhaust means provided opposite to the air permeable pads, A fountain means for spraying fine water droplets or fog on the permeable pad, wherein each pad is a multi-porous body in which a plurality of self-supporting corrugated sheets made of water-resistant cellulose fibers are overlapped with a ridge. An air conditioning system for livestock and cultivation room buildings, wherein the inside of the building is cooled by heat of vaporization generated when water attached to the air passage pad evaporates. 2. In a building for a livestock house and a cultivation room in a closed space, a plurality of air permeable pads provided at one end thereof, exhaust means provided opposite to the air permeable pads, A fountain means for spraying fine water droplets or fog on the permeable pad, wherein each pad is a multi-porous body in which a plurality of self-supporting corrugated sheets made of water-resistant cellulose fibers are overlapped with a ridge. An air conditioning system for livestock and cultivation room buildings, wherein the inside of the building is humidified by fine water droplets or fog that has passed through an air passage pad. 3. The corrugated plate constituting the pad has an angle of about 30 to 60 degrees, preferably about 4 degrees, with respect to the bottom surface of the pad.
The air conditioning system for livestock and cultivation room buildings according to claim 1 or 2, wherein the air conditioning system is formed at five degrees. 4. The building for livestock and cultivation rooms according to claim 1, wherein the building is closed with a covering sheet. 5. The building for livestock and cultivation rooms according to claim 4, wherein the covering sheet is formed by coating or laminating a nonwoven fabric made of polyethylene with a synthetic resin.