JP3204876U - Multi-point simultaneous local environment controller - Google Patents

Abstract

A multipoint simultaneous local environment control apparatus capable of simultaneously controlling a local temperature of an object at multiple points is provided. A multipoint simultaneous local environment control device (1) includes a pressurized air generator (2) that generates cold air or warm air as pressurized air, a plurality of bags (3) covering a local area (9a) of an object (9), and pressurized air. The air volume of the pressurized air supplied to the plurality of bag bodies 3 can be adjusted according to the distance from the generator 2 to the plurality of bag bodies 3, and the pressurized air with the adjusted air volume can be supplied to the plurality of bag bodies 3 A pressurized air supply structure 4. [Selection] Figure 1

Description

  The present invention relates to a multipoint simultaneous local environment control device.

According to the Intergovernmental Panel on Climate Change (IPCC), the warming of the climate system is unquestionable, and there is concern that global warming will have a significant impact on crop production.
For example, in the case of fruit trees that are perennial crops, in addition to being affected by weather fluctuations throughout the year, production is continued on the same tree for a long period of time, so varieties cannot be renewed or converted easily. For this reason, in order to contribute to the stable production of fruit trees, it is necessary to take immediate measures against quality defects due to global warming.
Among fruit trees, grapes have become a serious problem because of poor coloration of fruits throughout the country except Hokkaido. The cause of poor coloring is that anthocyanin biosynthesis in the skin is suppressed when the ripening stage of the fruit becomes high temperature. In particular, in facility cultivation using a greenhouse or the like, since the inside of the facility is likely to become high temperature, countermeasures against coloring defects are urgently needed.

For example, Non-Patent Document 1 discloses a method in which fruit bunches are arranged in a cylindrical duct, and cold air is blown from one side of the duct and discharged from the other opened side using a spot cooler. Yes.
Patent Document 1 discloses a vortex tube to which pressurized air is supplied, a hot air pipe through which hot air obtained from the vortex tube flows, a cold air pipe through which cold air obtained from the vortex tube flows, a hot air pipe and cold air There is disclosed a plant cultivation apparatus provided with a three-way valve that adjusts the mixing ratio of hot air and cold air that are respectively supplied from pipes, and an air pipe that guides the temperature-adjusted air locally to the plant.

Sogakuken 13 by 1. '14 [P Fruit Tree] P031 Effect of Duct Cooling to Fruit Bunch on Coloring of Grape 'Queen Nina' Yuka Miwa, Takeshi Isobe, Shinya Morikawa (Osaka Environmental Water Research Institute)

JP 2006-246879 A

However, in Non-Patent Document 1, there is a temperature gradient from one side of the duct that is the inflow side of cold air to the other side of the duct that is the outflow side of cold air. there were.
In Patent Document 1, air whose temperature is adjusted is supplied into a plurality of bags through a distribution pipe. However, since the flow rate of air supplied into each bag is limited, there is a difference in the temperature in each bag. Could occur.

  This invention is made | formed in view of the said situation, and makes it a subject to provide the multipoint simultaneous local environment control apparatus which can control the local temperature of a target object simultaneously in multiple points.

  As a means for solving the above-mentioned problems, the invention according to claim 1 is that the multipoint simultaneous local environment control device includes a pressurized air generator for generating cold air or warm air as pressurized air, and a plurality of bags covering the local area of the object. Body, and adjusting the air volume of the pressurized air supplied to the plurality of bag bodies according to the distance from the pressurized air generating device to the plurality of bag bodies, and adjusting the air volume A pressurized air supply structure capable of supplying the plurality of bags at the same time.

  According to a second aspect of the present invention, the pressurized air supply structure includes a first pipe connected to the pressurized air generator, a plurality of second pipes connected to the first pipe and the plurality of bags. And a pipe.

  The invention according to claim 3 is characterized in that inner diameters of the plurality of second pipes are different depending on distances from the pressurized air generating device to the plurality of bag bodies.

  The invention according to claim 4 is characterized in that the first pipe includes a cylindrical duct and a heat insulating layer covering an outer periphery of the duct.

  The invention according to claim 5 is characterized in that the second pipe is a heat insulating pipe connected to the first pipe, a hose that is at least partially covered by the heat insulating pipe and is slidably connected to the heat insulating pipe. It is characterized by providing.

  The device according to claim 6 further includes a thermostat capable of adjusting the temperature of the pressurized air at an arbitrary time.

  The invention according to claim 7 is characterized in that the thermostat can switch the power supply of the pressurized air generator on or off at an arbitrary time.

  According to the invention according to claim 1, since the pressurized air whose air volume is adjusted according to the distance from the pressurized air generator to the plurality of bags can be simultaneously supplied to the bags, Can be controlled simultaneously at multiple points.

  According to the second aspect of the present invention, since the pressurized air passing through the first pipe can be supplied to each bag body via the plurality of second pipes, the pressurized air generating device, the plurality of bag bodies, The structure can be simplified compared to the case where the pipes are directly connected by a plurality of pipes.

  According to the third aspect of the present invention, the air volume of the pressurized air supplied to the plurality of bags can be varied with a simple configuration in which the inner diameters of the plurality of second pipes are varied.

  According to the fourth aspect of the present invention, it is possible to avoid the influence of the outside air temperature on the pressurized air passing through the first pipe, so the temperature of the pressurized air supplied to each second pipe is maintained. be able to.

  According to the fifth aspect of the present invention, it is possible to avoid the influence of the outside air temperature on the pressurized air passing through the second pipe, so that the temperature of the pressurized air supplied to each bag body is maintained. Can do. In addition, since the installation position of the hose can be changed by sliding the hose with respect to the heat insulating pipe, the pressurized air can be easily supplied to each bag at various positions.

  According to the sixth aspect of the invention, since the temperature of the pressurized air can be automatically adjusted at an arbitrary time, power saving can be achieved as compared with the case where the temperature of the pressurized air is always constant. Can be planned.

  According to the invention according to claim 7, since the power on / off of the pressurized air generating device can be automatically switched at an arbitrary time, compared with the case where the power of the pressurized air generating device is always turned on. Thus, power saving can be achieved.

1 is a schematic diagram of a system according to an embodiment. It is a figure containing the cross section of the 1st piping which concerns on embodiment, and 2nd piping. It is a graph which shows the result of the influence which fruit bunch cooling has acquired on the skin color acquired by the Example with a comparative example.

  Embodiments of the present invention will be described below with reference to the drawings. In the following embodiments, as an example of a multi-point simultaneous local environment control device, a fruit cooling system (hereinafter simply referred to as “system”) capable of simultaneously cooling grape bunches (local area of an object) at multiple points. I will give you a description. In the drawings used for the following description, the scale of each member is appropriately changed in order to make each member a recognizable size.

<Entire system>
As shown in FIG. 1, the system 1 includes a cool air blower 2 (pressurized air generator) that generates cold air (cold air) as pressurized air, and a plurality (for example, FIG. (Only four are shown) 3, the cool air supply structure 4 (pressurized air supply structure) provided between the cool air blower 2 and the plurality of bag bodies 3, and the temperature of the cool air can be adjusted at any time The thermostat 5 is provided.

<Cool air blower>
The cold air blower 2 (spot cooler) is a device that cools air sucked from outside inside the main body and blows out cold air from the air outlets 2a and 2b. The cold air blower 2 has a rectangular parallelepiped shape extending vertically. A plurality of (for example, two in the present embodiment) cold air outlets 2 a and 2 b are provided at the upper end of the cold air blower 2. Here, “cold wind” means wind having a temperature lower than the outside air temperature. In the drawing, the flow of cold air is indicated by an arrow W1. Hereinafter, in the piping or the like, the end of the cool air fan 2 side (that is, the upstream side) is referred to as “upstream end”, and the end of the fruit cluster 9a (that is, the downstream side) is referred to as “downstream” based on the flow of the cool air. Sometimes called "end."

<Bag body>
The bag body 3 has a size that can accommodate the fruit clusters 9a. For example, the bag 3 is formed of a transparent film such as a biaxially stretched polypropylene film. The bag 3 is formed with a connection port 3a to which a downstream end of a second pipe 20 described later is connected. The bag body 3 is formed with an exhaust hole (not shown) through which the cool air supplied from the second pipe 20 can be exhausted. That is, the bag body 3 has air permeability. For example, the bag 3 is fixed to a branch or the like with a wire (not shown).

<Cool air supply structure>
The cold air supply structure 4 includes a plurality of (for example, two in the present embodiment) first pipes 10 connected to the cold air blower 2 and a plurality (for example, for example) connected to the first pipes 10 and the plurality of bag bodies 3. In FIG. 1, only four pipes are shown for convenience). In the following description, the first pipe 10 connected to one first outlet 2a of the two first pipes 10 will be described, and the first pipe 10 connected to the other second outlet 2b will be described. Is omitted.

<First piping>
As shown in FIG. 1, the first pipe 10 extends upward from the first air outlet 2a, then bends substantially at a right angle, and extends linearly along the branch. For example, the first pipe 10 is fixed to a branch or the like with a wire or the like (not shown).

1 and 2 together, the first pipe 10 includes a cylindrical duct 11 and a heat insulating layer 12 that covers the outer periphery of the duct 11.
The upstream end of the duct 11 is connected to the first air outlet 2a. Although not shown, the downstream end of the duct 11 is closed.

  The heat insulating layer 12 covers the entire outer periphery of the duct 11 over the entire longitudinal direction of the duct 11 except for a connecting portion (hereinafter referred to as “pipe connecting portion”) between the first pipe 10 and the second pipe 20. For example, the heat insulating layer 12 is formed of a fiber heat insulating material, a foam heat insulating material, or the like.

  Although not shown, the outer periphery of the heat insulating layer 12 is covered with a light reflecting film. The light reflecting film covers the entire outer periphery of the heat insulating layer 12 over the entire length of the duct 11 except for the pipe connection portion. For example, the light reflecting film is formed of a metal film or the like.

<Second piping>
The second pipe 20 is provided in the middle of the first pipe 10. Specifically, the plurality of second pipes 20 are arranged at intervals in the longitudinal direction of the first pipe 10. The second pipe 20 extends upward from the straight portion of the first pipe 10 toward the bag body 3. For example, the second pipe 20 is fixed to a branch or the like with a wire or the like (not shown).

  As shown in FIG. 2, the second pipe 20 includes a heat insulating pipe 21 connected to the first pipe 10, and a hose 22 that is at least partially covered with the heat insulating pipe 21 and is slidably connected to the heat insulating pipe 21. And. That is, the second pipe 20 is configured to be extendable and contractable in the longitudinal direction of the second pipe 20 by sliding the hose 22 with respect to the heat insulating pipe 21.

The heat insulating pipe 21 has a cylindrical shape having an inner diameter smaller than that of the duct 11. For example, the heat insulating pipe 21 is formed of a heat-insulating resin, rubber, or the like.
The hose 22 includes a first hose 23 disposed on the upstream side of the heat insulation pipe 21 and a second hose 24 disposed on the downstream side of the heat insulation pipe 21. The first hose 23 and the second hose 24 have a cylindrical shape having substantially the same outer diameter.

  The upstream end of the heat insulating pipe 21 is connected to the connection opening 11 a of the duct 11 in the first pipe 10 via the first hose 23. Thereby, the cold air from the duct 11 is supplied into the heat insulation pipe 21 through the first hose 23. For example, the first hose 23 is press-fitted into the upstream end opening 21 a of the heat insulating pipe 21 and the connection opening 11 a of the duct 11. In addition, the connection part of the 1st hose 23 and the connection opening 11a of the duct 11 is corresponded to a piping connection part.

  The downstream end of the heat insulation pipe 21 is connected to the connection port 3 a of the bag body 3 via the second hose 24. Thereby, the cold air supplied in the heat insulation pipe 21 is supplied into the bag body 3 through the second hose 24. For example, the second hose 24 is press-fitted into the downstream end opening 21 b of the heat insulating pipe 21. The downstream end of the second hose 24 is attached to the connection port 3 a of the bag body 3.

  The inner diameters of the plurality of second pipes 20 differ depending on the distance from the cold air blower 2 to the plurality of bags 3 (hereinafter referred to as “flow path length”). Here, the length of the flow path is the length of the flow path of the cold air from the first air outlet 2a to the connection port 3a of the bag body 3 (that is, from the upstream end of the first pipe 10 to the downstream end of the second pipe 20). Length). The inner diameter of the second pipe 20 increases as the flow path length increases. In other words, the inner diameter of the second hose 24 in the second pipe 20 increases stepwise as the flow path length increases. That is, the longer the flow path length, the greater the amount of cold air supplied into the bag body 3. With such a configuration, the cold air supply structure 4 adjusts the amount of cold air supplied to the plurality of bags 3 according to the flow path length, and simultaneously supplies the adjusted cold air to the plurality of bags 3. It is possible.

  For example, the inner diameters of the plurality of second pipes 20 include the amount of cold air at the first air outlet 2a, the wind pressure and temperature, the number of bag bodies 3, the target temperature in the bag body 3 and the like in addition to the flow path length. It can be set by thermal fluid analysis as the initial condition. Hereinafter, as an example, the flow path length when the number of the bag bodies 3 is four, the inner diameter of the downstream end of the second hose 24, the air volume at the downstream end of the second hose 24 (that is, supplied to the bag body 3). The relationship between the amount of cold air) and the temperature in the bag 3 is shown in Table 1.

<Thermostat>
The thermostat 5 can adjust the temperature of the cold air to an arbitrary time. As shown in FIG. 1, the thermostat 5 is provided in the cold air blower 2. The thermostat 5 adjusts the temperature of the cold air to an appropriate temperature by controlling the flow of thermal energy that flows into or is dissipated to the outside of the cold air fan 2. For example, by setting a timer (not shown) to a predetermined time, the temperature of the cool air supplied from the cool air fan 2 can be adjusted to an arbitrary temperature during the set time.

  Further, the thermostat 5 can switch the power of the cold air blower 2 on or off at an arbitrary time. For example, by setting a timer (not shown) to a predetermined time, the power supply of the cold air blower 2 is automatically turned on / off during the set time. Specifically, when the temperature in the bag body 3 becomes 25 ° C. or more at night, the cooler 2 can be turned on to start cooling the fruit bunches 9a.

As described above, the system 1 according to the above embodiment includes the cold air blower 2 that generates cold air as the pressurized air, the plurality of bags 3 that cover the fruit clusters 9a of the grapes 9, and the flow path length. A cold air supply structure 4 that adjusts the air volume of the cold air supplied to the plurality of bag bodies 3 and can simultaneously supply the cold air whose air volume has been adjusted to the plurality of bag bodies 3 is provided.
According to this configuration, since the cold air whose air volume is adjusted according to the flow path length can be simultaneously supplied to the respective bags 3, the temperature of the fruit bunches 9a of the grapes 9 can be simultaneously adjusted at multiple points. . That is, cold air can be supplied simultaneously and uniformly into the respective bags 3 arranged at various distances from the cold air fan 2. Therefore, it is possible to promote the coloring of the grapes 9 equally and to improve the sugar content and acidity evenly.
By the way, as a method of promoting the coloring of grapes, a method of cooling the inside of a facility with a heat pump or the like is known. However, the method of cooling the inside of the facility with a heat pump or the like has a problem in terms of economy because the cooling device is expensive and the maintenance cost such as electricity bill is high. On the other hand, according to the structure which concerns on this embodiment, in addition to being able to comprise the system 1 combining the commercially available cold air blower 2 and cheap materials (1st piping 10 and 2nd piping 20 grade | etc.,), Facilities Compared with the method of cooling the entire interior, it does not cost electricity, so it is economical.

  Further, according to this configuration, the cold air supply structure 4 includes the first pipe 10 connected to the cold air machine 2 and the plurality of second pipes 20 connected to the first pipe 10 and the plurality of bags 3. By providing, since the cold wind which passed through the 1st piping 10 can be supplied to each bag 3 via the several 2nd piping 20, the cold air machine 2 and the some bag 3 are several piping. The structure can be simplified compared to the case where the direct connection is made.

In addition, according to this configuration, the inner diameters of the plurality of second pipes 20 are different depending on the flow path length, so that the inner diameters of the plurality of second pipes 20 are different, The amount of cold air supplied to the bag 3 can be varied.
By the way, when each bag body is in various positions, the temperature in the bag body generally tends to increase as the flow path length increases. On the other hand, according to the configuration according to the present embodiment, the inner diameter of the second pipe 20 increases stepwise as the flow path length increases. The amount of cold air to be supplied is increased. Therefore, even if there is a difference in the flow path length, the temperature in each bag 3 can be efficiently and uniformly maintained.

  Further, according to this configuration, the first pipe 10 includes the cylindrical duct 11 and the heat insulating layer 12 that covers the outer periphery of the duct 11, so that the outside air temperature is generated in the cold air passing through the first pipe 10. Since it can avoid affecting, the temperature of the cold wind supplied to each 2nd piping 20 can be maintained.

  Moreover, according to this structure, the 2nd piping 20 is the heat insulation pipe 21 connected to the 1st piping 10, and the hose where the heat insulation pipe 21 was at least partially covered, and was slidably connected to the heat insulation pipe 21 22, it is possible to avoid the outside air temperature from affecting the cold air passing through the second pipe 20, so that the temperature of the cold air supplied to each bag body 3 can be maintained. In addition, since the installation position of the hose 22 can be changed by sliding the hose 22 with respect to the heat insulating pipe 21, it is possible to easily supply the cold air to each bag 3 at various positions.

  Further, according to this configuration, since the thermostat 5 that can adjust the temperature of the cold air at an arbitrary time is further provided, the temperature of the cold air can be automatically adjusted at an arbitrary time. As compared with the case where the power is always constant, power saving can be achieved.

  Further, according to this configuration, the thermostat 5 can switch the power of the cold air blower 2 on or off at an arbitrary time, so that the power of the cold air fan 2 can be automatically turned on or off at an arbitrary time. Since it can be switched, power saving can be achieved as compared with the case where the power supply of the cold air blower 2 is always turned on.

In addition, this invention is not limited to the said embodiment, A various design change is possible in the range which does not deviate from the summary.
For example, in the said embodiment, although the cold air machine 2 which generate | occur | produces cold air (cold air) was mentioned and demonstrated as a pressurized air generator, it is not restricted to this. For example, the pressurized air generator may be a warm air machine (heater) that generates warm air (warm air).

  Moreover, although the said embodiment mentioned and demonstrated the system which can cool simultaneously the fruit bunch 9a of the grape 9 by multipoint as a multipoint simultaneous local environment control apparatus, it is not restricted to this. For example, the system may be capable of simultaneously cooling a local area of a plant other than the grape 9 at multiple points. In other words, the system only needs to be capable of cooling or heating the local area of the object at multiple points simultaneously.

  Hereinafter, the present invention will be described in more detail by way of examples. However, the present invention is not limited to the following examples.

  The inventors of the present invention have confirmed by cooling the grape bunches using the system that the coloration of grapes can be promoted uniformly and the sugar content and acidity can be improved uniformly by the following test.

(Examination subject)
As a test object, “Ruby Roman” which is a kind of grapes was used. Specifically, the test target is “Rubi Roman” (F5BB rootstock) 9th grade 5 trees (nuclear-free cultivation, non-heated house cropping type, one letter) planted at Sand Dunes Agricultural Research Center (Kahoku City) in 2014 (Street branch / short tree pruning) was used.

(Comparative example)
In the comparative example, the test object was not cooled in the natural state, so-called no treatment. That is, the comparative example does not include a system.

(Example)
The system includes a spot cooler and a fruit bag (bag), and a system in which the inner diameter of a tube extending from a duct connected to the outlet of the spot cooler is increased stepwise according to the flow path length (the above embodiment) The system 1) according to the above was used. Only one spot cooler (2.4 kW, 2 outlets) manufactured by Daikin Industries, Ltd. was used. As the fruit bag, BIKOO (30 cm × 40 cm) manufactured by Nidaiki Co., Ltd. was used. The duct had a total length of 26 m (13 m × 2).

(Test area)
In the test section, an untreated section (n = 21) as a comparative example and a treated section (n = 60) as an example were installed. In the treatment area, the system was operated only for three weeks (July 23 to August 13) and at night (17:00 to 7:00 the next day) from 60 days after full bloom.

(Temporal center temperature)
In the untreated section and the treated section, the temperature of the fruit center was measured from August 5 to August 6 (that is, the temperature in the fruit bag). In the treatment area, there was almost no difference between the temperature at the outlet of the spot cooler and the temperature at the center of the fruit bunches, which is 13 m long. At night, the temperature at the center of the fruit bunches in the treated area was 4.5 ° C. lower than that in the untreated area.

(contents of the test)
For the coloring of the skin, the entire fruit bunch was examined using a “ruby roman exclusive color chart (10 steps)” every 7 days from 60 to 88 days after full bloom. In addition, from the 7 fruit buns randomly extracted on the 88th day (August 20th) after the harvest season in full bloom, three arbitrary fruit grains were collected per fruit bunker and cut from the top of the fruit with a cork borer. Using three 8 mm peels as one sample, the anthocyanin content in the peels was determined by a conventional method. Furthermore, fruit juice was collected from the fruit grains from which the fruit skin was collected, and the sugar content and acidity were measured.

(Test results)
FIG. 3 shows the result of the effect of fruit bunch cooling on the skin color, obtained by the above-described example, together with a comparative example. In the graph of FIG. 3, the “horizontal axis” is the survey date surveyed every 7 days from 60 days to 88 days after full bloom, and the “vertical axis” is the color chart (10 levels) value (hereinafter simply “CC value”). Respectively).

  As shown in FIG. 3, the CC value of the fruit skin in an Example obtained the favorable result which changes significantly high from the 2nd week after a process start with respect to a comparative example. Moreover, on the 88th day after full bloom in the harvest period, the CC value of the comparative example was 7.3, whereas the CC value of the example was 7.9, and a significantly high result was obtained.

  Hereinafter, Table 2 shows the results of the effect of fruit bunch cooling on sugar content and acidity obtained by the above-mentioned examples together with comparative examples.

  As shown in Table 2, regarding the sugar content (Brix value), the comparative example was 17.5%, whereas the example was 18.3%, and a significantly high result was obtained. Regarding the acidity, the comparative example was 0.31%, whereas the example was 0.34%, and a significantly high result was obtained.

  From the above results, it is possible to cool 60 fruit bunches with one spot cooler by the system of this test, to promote the coloration of “ruby roman” evenly, and to improve the sugar content and acidity evenly. Became clear.

1 ... System (Multi-point simultaneous local environmental control device)
2 ... Cooler (Pressurized air generator)
3 ... Bag body 4 ... Cold air supply structure (pressurized air supply structure)
5 ... Thermostat 9 ... Grapes (target)
9a ... Fruit bunch (local)
DESCRIPTION OF SYMBOLS 10 ... 1st piping 11 ... Duct 12 ... Heat insulation layer 20 ... 2nd piping 21 ... Heat insulation pipe 22 ... Hose

Claims (7)

A pressurized air generator for generating cold air or warm air as pressurized air;
A plurality of bags covering the local area of the object;
The air volume of the pressurized air supplied to the plurality of bag bodies is adjusted according to the distance from the pressurized air generating device to the plurality of bag bodies, and the compressed air whose air volume is adjusted is A pressurized air supply structure capable of simultaneously supplying the bag body;
A multipoint simultaneous local environment control device characterized by comprising: The pressurized air supply structure is
A first pipe connected to the pressurized air generator;
A plurality of second pipes connected to the first pipe and the plurality of bags;
The multi-point simultaneous local environment control apparatus according to claim 1, comprising:   3. The multipoint simultaneous local environment control device according to claim 2, wherein inner diameters of the plurality of second pipes are different depending on distances from the pressurized air generator to the plurality of bags.   4. The multipoint simultaneous local environment control device according to claim 2, wherein the first pipe includes a cylindrical duct and a heat insulating layer covering an outer periphery of the duct. 5.   The second pipe includes a heat insulating pipe connected to the first pipe, and a hose that is at least partially covered by the heat insulating pipe and is slidably connected to the heat insulating pipe. The multipoint simultaneous local environment control device according to any one of claims 2 to 4.   The multipoint simultaneous local environment control device according to any one of claims 1 to 5, further comprising a thermostat capable of adjusting the temperature of the pressurized air at an arbitrary time.   The multi-point simultaneous local environment control device according to claim 6, wherein the thermostat is capable of switching the power supply of the pressurized air generator on or off at an arbitrary time.

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