JP3179938U - Air conditioning equipment for agricultural production facilities - Google Patents

Abstract

An air conditioner capable of performing efficient cooling or dehumidification by smoothly performing heat convection circulation in a room of an agricultural production facility.
An air conditioner is installed in an agricultural production facility, and is arranged outdoors through a heat pump type air conditioner composed of an indoor unit 3 and an outdoor unit 8, and a plurality of flexible ducts that lie sideways and bend in a U-shape. A plurality of resinous film-like ducts 4 connected to the machine and supplying cooled or dehumidified air sent from the indoor unit into the facility room through a number of ejection holes. The indoor unit is placed on a gantry, and the flexible duct connects the lower end to the discharge port and connects the upper end to the resin film-like duct, so that the cooled or dehumidified air is discharged from the discharge port. The direction of the flow is reversed from above and guided toward the facility room.
[Selection] Figure 5

Description

  The present invention adjusts the temperature and humidity of agricultural production facilities to suitable for crops, such as agricultural houses such as plastic greenhouses and glass greenhouses, and plant factories that grow plants in warehouses, tent domes, containers, etc. -Concerning air conditioners in agricultural production facilities for maintenance.

  The market price of agricultural products fluctuates greatly depending on the shipping time, and in order to increase the added value of the product and increase profitability, the shipping time is adjusted using agricultural production facilities such as agricultural houses and plant factories. Is extremely effective. Compared with outdoor cultivation that is immediately affected by the weather, these agricultural production facilities can control every growth environment, so that quality control and work are easy to perform, and a uniform and stable harvest is realized. In recent years, not only vegetables but also fruit trees such as citrus fruits have been cultivated in agricultural production facilities.

  Especially in the case of vegetables, the plant grows quickly and can be harvested in a relatively short period of cultivation of several months. Therefore, agricultural production facilities are mainly used for heating in the cold season.

  However, when trying to cultivate fruit trees indoors, they will continue to cultivate trees indoors throughout the year, requiring delicate temperature and humidity management throughout the seasons.

  Especially in vinyl houses, etc., the sunshine transmittance is high and the structure is suitable for heating the facility room in the cold season, but even if all the windows are opened in the midsummer season, ventilation is not enough. However, the inside of the facility becomes hot and humid more than necessary, causing serious damage to crops.

  Generally, when fruit trees are exposed to high temperatures, they have a negative effect on flower bud differentiation, leading to poor flowering.In particular, house oranges tend to mature in midsummer, and the temperature during maturity If it is too high, the coloration of the skin will be poor, so it is susceptible to the adverse effects of high temperature and high humidity in the midsummer season, and it is necessary to actively cool and dehumidify by night cooling even at night, By taking these measures, problems such as delays in harvesting and lowering of the product rate can be solved, and profitability can be improved.

  Furthermore, due to the global warming trend, it is not rare that even outside temperatures rise to around 40 ° C in the midsummer season. Management of the indoor temperature and humidity of agricultural production facilities during these times is extremely important for farmers. It is a difficult issue.

  Conventional air conditioners of agricultural production facilities that are already widely used mainly blow out air heated by burning fuel such as heavy oil into the room. The air conditioner of this system not only can not cope with cooling and dehumidification in the midsummer season, it also has a large economic burden due to the rising price of heavy oil, and further contributes to global warming due to the emission of carbon dioxide .

  Therefore, in order to deal with such problems, heat pump type air conditioners that can exchange heat with less energy using a heat pump heat pump cycle have begun to spread in the agricultural field, for example, Patent Document 1 A technique of using a heat pump type air conditioner for air conditioning in a garden house is disclosed.

  And this heat pump type air conditioner has cooling and dehumidifying functions in addition to the heating function of the chiller, so it can be used as an air conditioner in the midsummer season. It is possible to prevent floating skin reduction and to promote flowering.

Japanese Utility Model Publication No. 62-60815

  The horticultural house air conditioner of Patent Document 1 has a structure in which the front space in the casing is vertically divided by a partition wall to form a suction chamber and a blowout chamber. Since various other configurations are integrally assembled in the machine room, there is a problem that the apparatus becomes complicated, and is increased in size, weight, and cost. In addition, since the outlet direction of the outlet is fixed and the outlet position is unevenly distributed in the house room, air convection is difficult to be efficiently performed in the house room, which is a large space, and the temperature and humidity Unevenness occurred, and it was difficult to efficiently and average.

  The present invention has been made in view of the above-described conventional problems. It is an object of the present invention to provide an air conditioner for an agricultural production facility that has a simple structure and can be manufactured at low cost, and that can efficiently cool or dehumidify a room. Yes.

  In order to solve the above-mentioned problems, the present invention provides a heat pump type air conditioner, which is installed in an agricultural production facility, and includes an indoor unit that cools or dehumidifies indoor air and an outdoor unit that discharges heat to the outside. A plurality of resinous film ducts that are connected to the outdoor unit via a plurality of flexible ducts bent in a U-shape and that supply cooled or dehumidified air sent from the indoor unit to the room through a number of ejection holes. The indoor unit is mounted on a gantry at a position close to the side wall in the room, and an air inlet is provided on the side surface on the indoor side. The flexible duct has a lower end connected to the discharge port and an upper end connected to a resinous film-like duct, and is housed inside a case body provided with a discharge port on the side facing the suction port. By The direction of the flow of the cooled or dehumidified air flowing out from the discharge port is reversed from above, and the height position can be changed and guided to the room, and the film duct is suspended in the air in the room. In this state, the air conditioner of the agricultural production facility is characterized in that it is constructed in a long direction in one direction and is arranged in parallel with being spaced apart from each other.

  Further, the gantry on which the indoor unit is placed may be supported by aggregate, and the upper surface of the gantry may be set to a height of 500 mm or more from the ground to ensure air permeability in the lower space of the gantry.

  Further, the surface color of the resinous film-like duct may be a silver color so that sunlight is irregularly reflected.

  According to the air conditioner of the present invention, a heat pump type air conditioner that is installed in an agricultural production facility and is composed of an indoor unit that cools or dehumidifies indoor air and an outdoor unit that discharges heat to the outside, and a horizontal U-shape A plurality of resinous film-like ducts connected to the outdoor unit through a plurality of flexible ducts bent in a shape and supplying cooled or dehumidified air sent from the indoor unit into the room through a number of ejection holes. An air conditioner for an agricultural production facility, wherein the indoor unit is placed on a gantry at a position close to a side wall in the room, and a suction port is provided on a side surface on the indoor side. The flexible duct has a lower end connected to the discharge port and an upper end connected to the resinous film-like duct. Discharge port The direction of the flow of the cooled or dehumidified air flowing out from above is reversed from above, so that the height position can be changed and guided toward the room, and the film duct is suspended in the room. In the state, it is constructed from an air conditioner of an agricultural production facility characterized in that it is erected long in one direction and arranged in parallel with each other. Air that is cooled or dehumidified is blown out from a plurality of resin-made film ducts that are inverted inside and suspended in the air, so that thermal convection circulation is performed smoothly and efficient cooling or dehumidification is achieved. it can.

  In particular, by adopting the flexible duct connection structure, the degree of freedom of arrangement of the indoor unit and the resin film duct is high, and the position depends on conditions such as the scale of the agricultural production facility and the cultivation position of the crop. Regardless of the position in the room where the resin film duct is installed, the orientation and position of the supportable duct can be freely changed and adjusted without restricting the connection between the air conditioner and the resin film duct. It can be securely connected.

  At the same time, the resin film-like duct can be connected without causing twisting, bending or the like that would hinder the flow of air. As a result, it is possible to specifically realize a structure that blows out air that has been cooled or dehumidified from a high aerial position in the room even in a large space with a large capacity, and can efficiently perform cooling or cooling without causing almost any temperature unevenness in the facility room. Dehumidification can be performed. In addition, since the plurality of resin film-like ducts can efficiently cool or dehumidify the air in which fruit trees or the like are fruiting, it is possible to cultivate crops satisfactorily.

  Furthermore, since the indoor unit is supported at a high position from the ground, it can be prevented from being soiled or rusted at an early stage, easy to perform maintenance, and easy to install and adjust the position of the flexible duct connection structure.

  In addition, while supporting the gantry on which the indoor unit is placed with aggregates, setting the top surface of the gantry to a height of 500 mm or more from the ground to ensure air permeability in the lower space of the gantry, Without disturbing the air circulation, it is possible to spread the cold air to every corner.

  If the surface color of the resinous film duct is silver, a part of sunlight is diffusely reflected and released to the outside of the house, so that the lack of sunlight in winter can be supplemented. Cooling efficiency can also be increased, and in particular, the light reflected upward from the resinous film duct will irradiate the back side of leaves such as fruit trees, so that photosynthesis is promoted and growth can be promoted. It becomes. Moreover, pests such as aphids that inhibit the growth of fruit trees and the like have a habit of repelling silver, and can also exert repellent effects on pests.

It is a plane external view which shows the use condition of this invention. It is a top view which shows the Example of this invention. It is a side view which shows the Example of this invention. It is a front view which shows the Example of this invention. It is a horizontal external view which shows the use condition of this invention.

  Embodiments of an air conditioner for an agricultural production facility according to the present invention will be described below with reference to the accompanying drawings.

  The air conditioner of the present invention is, for example, a greenhouse for cultivating crops such as vegetables, flowers, fruit trees, an agricultural house such as a glass greenhouse, a plant factory that grows plants indoors such as warehouses, tent domes, containers, etc. The temperature and humidity suitable for crops are adjusted in the room of the agricultural production facility. In the embodiment shown in FIGS. 1 and 5, for example, a well-known plastic house is used, which is long in one direction and rectangular in plan view. The roof 1 is formed in an arch shape.

  The greenhouse, for example, is formed by coating a metal frame assembled in a predetermined shape with a translucent sheet such as polyvinyl chloride to form four side walls 2 and a roof 1 of the house, and on the ground in the house. A large number of crops are planted in multiple rows and cultivated. In addition, in FIG. 5, it has shown in the example in case the crops 12 are fruit trees, such as a tangerine.

  A plurality of (for example, five) air conditioners of the present invention can be installed according to the size of the facility, for example, and each indoor unit 3 has a plurality of (for example, four) resin film-like ducts 4. Is connected. Each indoor unit 3 is arranged close to the wall surface of one of the long side walls 2 facing the house, and is arranged side by side at a predetermined interval in the longitudinal direction. Yes. The number of air conditioners, the number of resin film-like ducts 4 and the like may be arbitrarily set according to the size of the facility, the type of crop, and the like.

  As shown in FIGS. 2 and 4, the resin film duct 4 is connected to the indoor unit 3 and blows out the cooled or dehumidified air sent from the indoor unit into the room through a number of blow holes. However, it is formed in a long cylindrical shape on one side so as to cross the room, and both ends are open. The resin film-like duct 4 is made of a flexible synthetic resin such as polyethylene or vinyl which is flexible and thin.

  The resin film duct 4 is flat so that the inner walls overlap when the air is not sent into the duct. When the air is sent from the indoor unit to the inside of the duct, the resin film duct 4 is substantially cylindrical by the wind pressure. It comes to swell in a shape. In the peripheral wall of the resin film-like duct 4, a large number of blowing holes are formed in a line at regular intervals along the longitudinal direction of the duct.

  The resin film-like duct 4 is suspended in the air from the indoor beam 13 and the like by wires, strings, ridges 14 and the like, and the longitudinal direction of the duct is suspended in the short side direction of the room, so that the entire duct Since it is installed so that air is blown in all directions from a large number of outlets provided randomly around the circumference, the air that has been cooled or dehumidified passes through the duct, thereby cooling or dehumidifying the interior space to every corner. Can do.

  In FIG. 1, the plurality of resin film-like ducts 4 are arranged in parallel at equal intervals, but in actuality, depending on the arrangement, position, type, etc. of the crops to be cultivated It may be set as appropriate, and sufficient effects can be obtained even if the large number of blow holes of the resin film duct 4 are provided only in the vertical direction.

  In FIG. 1, five indoor units 3 are arranged at substantially equal intervals in a position close to the indoor side wall 2, and each indoor unit 3 is supported at a predetermined height position by a gantry 9, from the indoor side. The height position of the air inlet 6 formed so as to suck in air is set to a predetermined height. The indoor unit 3 includes a blower and a heat exchanger, and is housed in a case body 10 provided with a suction port 6 and a discharge port 7. Further, an outdoor unit 8 is connected to the outside of the facility, and a heat medium pipe and wiring are connected to the indoor unit so as to perform a heat pump cycle that releases heat absorbed by the indoor unit 3 to the outside. A plurality of indoor units may be connected to the outdoor unit 8.

  As shown in FIGS. 2, 3, and 4, the case body 10 is provided in, for example, a flat rectangular box shape (a rectangular parallelepiped shape) that has a rectangular shape in plan view. Of the two side surfaces of the case body facing each other, an air suction port 6 is provided on one side wall, and a cold air discharge port 7 is provided on the other side wall. The case body 10 is arranged with the suction port 6 facing the room side and the discharge port 7 opposite to the suction port 6 facing the side wall 2 close to the case body. The case body 10 is arranged with a certain distance between the cool air discharge port 7 and the side wall 2, and a space for the flexible duct 5 described later is secured.

  As shown in FIG. 4, the air inlet 6 of the case body 10 is provided, for example, by opening the entire side surface of the case body into a rectangular shape. The suction port 6 is stretched with a net or filter for preventing foreign matter from entering. Further, the cool air discharge port 7 of the case body 10 is provided in a circular shape, for example, through the side surface with an opening area smaller than the side surface contour of the case body. Four discharge ports 7 are connected to one case body 10, and are formed in a line along the horizontal direction, that is, the longitudinal direction of the case body 10.

  The blower includes, for example, a sirocco fan installed in the case body 10 close to the inlet side, and the heat exchanger 11 forms a heat pump cycle in cooperation with the outdoor unit, for example, to generate heat. Consists of external condenser. The heat exchanger 11 is installed at an intermediate position inside the case body, which is an intermediate position between the suction port 6 and the discharge port 10 facing each other. In an operating state, the indoor unit 3 sucks air from the indoor side by a blower inside the case body 10.

  Inside the case body 10, the sucked air flows from the suction port 6 to the discharge port 7 in one direction in a substantially lateral direction. The air flowing in the lateral direction in the case body 10 is surely brought into contact with the heat exchanger, and the air is cooled or dehumidified. The cooled or dehumidified air flows out of the case body from the discharge port 7 by the wind power of the blower.

  The gantry 9 is a support means that is installed on the ground in the room and supports the indoor unit 3 at a predetermined height position. As shown in FIGS. 3 and 4, in the present embodiment, the gantry 9 includes, for example, a pedestal having a base surface formed in a rectangular shape in accordance with the size and shape of the case body 10 that houses the indoor unit 3, and a pedestal. The four-legged base structure is integrally provided with four support legs that support the corners of the frame of the part. The gantry 9 is formed by forming a substantially rectangular parallelepiped hollow space below the pedestal and opening four side surfaces of the hollow space. That is, the gantry 9 forms a hollow lower space directly below the pedestal, that is, directly below the supporting case body 10.

  Since all the side surfaces of the lower space of the gantry 9 are open and air can pass through the lower space, the air circulation by the indoor unit 3 can be minimized. .

  The gantry 9 has a height H from the ground to the upper surface of the gantry 9 of at least 500 mm or more. However, when the gantry 9 is set to 880 mm or less, which is a limit line of temperature and humidity distribution from the ground surface, the effect is obtained. Is. And the height of the open part of the lower space of the gantry 9 is secured at the same level.

  Note that if the height H of the upper surface of the gantry 9 is lower than 500 mm, the height of the lower space of the gantry 9 is lowered, which may hinder air circulation. Moreover, since the installation height of the main body of the indoor unit 3 is lowered, there is a possibility that the installation efficiency of the duct is lowered. Note that the gantry 10 may be configured such that, for example, the length of the support leg can be changed and the height position of the indoor unit can be adjusted.

  As shown in FIG. 3, the flexible duct 5 is connected to the cold air discharge port 7 of the case body 10 in order to guide the air cooled or dehumidified from the indoor unit 3 to the resin film duct 4. The one end is connected to the cool air discharge port 7 of the case body 10 and the other end is connected to the resin film duct 4. In the present embodiment, the flexible duct 5 connection structure has four flexible ducts 5 in accordance with the four cold air discharge ports 7 provided in the case body of the indoor unit 3. As described above, the case body 10 is installed with the suction port 6 facing the indoor side and the discharge port 7 facing the side wall, so that cooling or dehumidification flows from the cool air discharge port 7 to the outside of the case body 10 on the side wall side. The formed air is reversed in a U-turn shape from above toward the room side opposite to the air flow inside the case body 10, and is guided to the resin film duct 4 installed on the room side.

  Due to the flexible nature of the retainable duct 5, the connection length from the cold air discharge port 7 of the case body 10 to the resin film-shaped duct 4 and the flexible duct connected to the resin film-shaped duct 4 on the indoor side. The installation position of the other end of 5 can be freely changed. That is, the length of the flexible duct 5, the direction and angle of the other end side, the installation position, and the like are freely adjusted, and the flexible duct 5 is connected to each resin film-like duct 4 arranged in parallel in the room.

  Therefore, it is not necessary to design the position of the indoor unit 3 and the positions of the plurality of resin film-like ducts 4 by freely changing the direction of the flexible duct 5, and each resin film-like shape Connection can be easily made corresponding to the installation position of the duct 4.

  As a result, the installation position of the resin film duct 4 that forms the discharge port 7 of the air cooled or dehumidified into the room is not limited by the position of the indoor unit 3 or the position where the crop is planted. A plurality of resin film-like ducts 4 can be arranged side by side to send cooled or dehumidified air to the entire facility, and even if the room is a large-capacity space, average efficiency without causing temperature unevenness Good cooling or dehumidification can be specifically realized.

  In the present embodiment, for example, the flexible duct 5 can freely expand and contract and bend to hold the expanded and bent state and the bent state, and can also hold the duct internal space having a circular cross section even in the expanded and bent state. It consists of a metal bellows tube (flexible duct).

  The periphery of the flexible duct 5 is covered with, for example, a heat insulating material such as glass wool, and as shown in FIGS. 3 and 4, the supportable duct 5 is connected to the cold air discharge port 7 of the case body 10, for example. In addition to being bent upward from one end, it is bent again toward the indoor side, and laid down in a side view and bent into a U shape. Further, since the other end of the flexible duct 5 can be freely expanded and contracted as described above, it is connected to the resin film-like duct 4 through a connection holding portion at an appropriate position. The other end of the supportable duct 5 is inserted into an opening at one end of the resin film-shaped duct 4 and is connected to the resin film-shaped duct 4 from the outside through a metal connection ring in an airtight state.

  Next, the operation of the air conditioner according to the present embodiment will be described. When constructing an air conditioner for an agricultural production facility according to the present invention, for example, a plurality of resin film ducts 4 as shown in FIG. 1 between the crops 12 cultivated side by side in the agricultural production facility. Are placed side by side. In the room, indoor units 3 are juxtaposed at predetermined intervals at positions close to the side walls 2.

  The height H of the gantry 9 supporting the indoor unit 3 is set to about 500 mm or more. The supportable duct 5 is connected to the discharge port 7 of the case body 10, is laid down and bent into a U-shape, and is disposed with the other end directed indoors through the upper space of the gantry 9. It is connected to the resin film duct 4 at a predetermined position by changing the length or the position of the end portion or by changing the blowing direction. Since the flexible duct 5 has a high degree of freedom of connection, the flexible duct 5 is not limited to the installation position of the resin film duct 4, and a plurality of resin film ducts 4 arranged in parallel throughout the space in the facility room Connect securely.

  Further, even if the position of the resin film-shaped duct 4 changes depending on the position where the crop 12 is planted or the like, the connection can be easily and freely adjusted corresponding to the position of the resin film-shaped duct 4. The plurality of resin film ducts 4 are not limited to being arranged in parallel, and may be installed obliquely so that the directions in the longitudinal direction of the ducts are different from each other. Even in this case, the direction of the retainable duct 5 can be changed and the resin film duct 4 can be easily connected.

  When the air conditioner is operated, as shown in FIG. 5, in the indoor unit 3, air is sucked from the indoor side, and is cooled or dehumidified while flowing substantially horizontally in the case body. The cooled or dehumidified air flows from the cool air discharge port 7 of the indoor unit 3 to the flexible duct 5, is reversed by the supportable duct 5, is guided indoors, and enters the resin film duct 4. Infused. Then, the cooled or dehumidified air is blown into the facility room from the blowout hole of the resin film-like duct 4 and flows into the room.

  Furthermore, since the air inlet of the indoor unit 3 is set toward the indoor side and is installed at a high position from the ground, high-temperature air inside the indoor side is sucked and further cooled or dehumidified, so that thermal efficiency is good and early The temperature in the facility room can be lowered.

  In this way, air is sucked from the indoor side, reversed to the indoor side, and cooled or dehumidified air is blown out from the resin film-like duct 4 arranged in the air. Cooling or dehumidification can be performed while air is efficiently convected, and efficient cooling or dehumidification can be realized without causing temperature unevenness, and crops can be cultivated well.

The air conditioner of the agricultural production facility of the present invention described above is not limited to the configuration of the above-described embodiment alone, and is optional within the scope not departing from the essence of the present invention described in the claims of the utility model registration. May be modified.

  The air conditioner of the present invention can be used for agricultural production, for example, in greenhouses and glass greenhouses that grow crops such as vegetables, fruits and flowers, as well as plant factories that grow plants inside warehouses, tent domes, containers, etc. It can be widely used as a facility air conditioner.

DESCRIPTION OF SYMBOLS 1 Roof 2 Side wall 3 Indoor unit 4 Resin-made film-like duct 5 Flexible duct 6 Intake port 7 Outlet 8 Outdoor unit 9 Base 10 Case body 11 Heat exchanger

Claims (3)

  A heat pump type air conditioner that is installed in an agricultural production facility and is composed of an indoor unit that cools or dehumidifies the air in the facility room and an outdoor unit that discharges heat to the outside, and a plurality of flexures that lie sideways and bend in a U-shape Air conditioning of an agricultural production facility provided with a plurality of resin-made film-like ducts connected to the outdoor unit via a duct and supplying cooled or dehumidified air sent from the indoor unit into the facility room through a number of ejection holes The indoor unit is placed on a gantry at a position close to the wall surface in the facility room, and a suction port is provided on the side surface on the facility room side, and the side surface facing the suction port is provided. Is housed in a case body provided with a discharge port, and the flexible duct has a lower end connected to the discharge port and an upper end connected to a resinous film-like duct, thereby cooling the flexible duct from the discharge port. Or the direction of the flow of dehumidified air is reversed from above, and the height position can be changed and guided toward the facility room, and the film duct is suspended in the air in the facility room An air conditioner for an agricultural production facility, wherein the air conditioner is long installed in one direction and spaced apart from each other.   The gantry on which the indoor unit is placed is supported by an aggregate, and the upper surface of the gantry is set to a height of 500 mm or more from the ground, ensuring air permeability in the lower space of the gantry. Air conditioner for agricultural production facility as described.   The air conditioner of an agricultural production facility according to claim 1 or 2, wherein the surface color of the resinous film duct is a silver color so that sunlight is irregularly reflected.