JPH0662677A - Raising/storage chamber for seedling - Google Patents

Abstract

PURPOSE:To provide a raising/storage chamber enabling seedlings of flower, etc., to be raised favorably therein. CONSTITUTION:Fairly thermally conductive inner boxes are arranged at specified intervals inside a thermal insulating outer box, and air is circulated throughout the space between the outer box and the inner boxes. The space is equipped with the first and the second heaters 23,24. When the outside temperature is lower, both heaters 23,24 are operated; on the contrary, when the outside temperature is higher, the second heater 24 alone is operated, or both the heaters are shutdown.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling growing storage having a function of germinating and growing seedlings of flowers such as chrysanthemums in a storage room.

[0002]

2. Description of the Related Art Conventionally, fresh flowers such as chrysanthemums are germinated and grown in a vinyl house, and then, for example, for the purpose of shipping adjustment, for example, Japanese Unexamined Patent Publication No.
-105186 (F25D17 / 08), a method of storing in a low temperature storage is adopted. That is, in the above-mentioned publication, a heat-conducting inner box is arranged inside the heat-insulating outer box with a space therebetween, and the inside of this inner box serves as a storage chamber, and cold air is circulated between both boxes. A low-temperature chamber that indirectly cools the storage chamber from the inner box is shown.With such a configuration, the storage chamber is not subjected to cooling due to direct cold air infiltration, so that drying is prevented, and therefore storage at high humidity is performed. However, it is possible to store while keeping the freshness of articles such as fresh flowers.

As described above, conventionally, it is necessary to carry seedlings such as chrysanthemums germinated and grown in a vinyl house into the low temperature warehouse as described above before shipping. If it is possible to handle seedlings such as chrysanthemums, it is extremely convenient because the above-mentioned transportation work and greenhouses are unnecessary.

[0004]

However, even if the chrysanthemum seedlings are stored in the storage room of the low temperature chamber as described in the above publication and the germination is to be grown there, the temperature in the storage room is + 25 ° C to +30 suitable for germination. It is impossible to raise the temperature to about ℃. Therefore, a method of arranging a heater in the storage chamber to heat the storage chamber is conceivable. However, if the storage chamber is directly heated, there is a problem that the temperature in the storage chamber greatly varies and good germination cannot be expected.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to provide a seedling-raising storehouse capable of favorably growing seedlings such as flowers in a storage chamber.

[0006]

A seedling-raising and storing cabinet according to the invention of claim 1 is provided with a heat-insulating outer box, which is arranged inside the outer box with a predetermined space therebetween to form a storage chamber inside. A heat-conducting inner box, a heater arranged in the interval, an air blower for circulating air in the interval, and a controller for controlling energization of the heater based on the outside air temperature. , This controller increases the heating value of the heater when the outside air temperature is low,
It is characterized in that it is reduced when the outside air temperature is high.

Further, the seedling raising storage of the invention of claim 2 is
A heat-insulating outer box, and a heat-conducting inner box that is disposed inside the outer box with a predetermined interval and forms a storage chamber inside,
A plurality of heaters and cooling devices arranged in the interval, a blower device for circulating air in the interval, and a plurality of heater control devices for controlling energization of each heater at a predetermined set value based on the outside air temperature. And a temperature control device for controlling the operation of the cooling device based on the temperature in the storage chamber,
The plurality of heater control devices have different set values, and the temperature control device operates the cooling device when the temperature in the storage chamber reaches a predetermined high temperature.

[0008]

According to the above-mentioned storage of the present invention, the air heated by the heat generated by the heater is circulated within the space between the inner and outer boxes, whereby the inside of the storage chamber is heated substantially uniformly from the wall surface of the inner box. . In addition, the control device responds to changes in the outside temperature,
When the outside air temperature is low, the heat generation amount of the heater is increased, and when the outside air temperature is high, the heat generation amount is decreased, so that a substantially uniform germination and growth environment is formed in the storage chamber regardless of changes in the outside air temperature. As a result, seedlings such as chrysanthemums stored in the storage chamber germinate and grow well.

According to the storage of the invention of claim 2,
The air heated by the heat generated by the plurality of heaters is circulated in the space between the inner and outer boxes, so that the inside of the storage chamber is heated substantially uniformly from the wall surface of the inner box. Further, since a plurality of heater control devices having different set values control the energization of the heaters respectively, the number of heaters that generate heat changes according to the change in the outside air temperature. It is possible to form a substantially uniform germination and growth environment. In particular, since the heater control devices that have different set values control the energization of multiple heaters, it is possible to use a simple mechanical thermostat, etc., and it is necessary to adjust the energization amount of the heater with expensive circuit elements. Disappears. Also, if the temperature inside the storage room becomes too high due to the heat generated by the heater, the cooling device is operated by the temperature control device to lower the air temperature in the space, so an optimal environment for germination and growth should be created in the storage room. The seedlings, such as chrysanthemums, that can be grown and are stored germinate well in the germination and growing environment.

[0010]

EXAMPLES Examples of the present invention will be described in detail below. FIG. 1 is an electric circuit diagram of a control device C of the seedling raising storage 1 of the present invention, FIG.
3 is a vertical sectional side view of the seedling growing storage 1, and FIG. 3 is a perspective view of the seedling growing storage 1 with the outer box 2 seen through. The seedling rearing storage 1 includes a top wall 2A, a bottom wall 2B, a front side wall 2C, a rear side wall (not shown), and left and right sides, each of which is composed of a single or a plurality of heat insulating panels having a convex portion or a concave portion at a connecting portion with an adjacent panel. Side wall 2
A heat-insulating outer box 2 having a box body formed by combining E and 2F, and a top wall 3A, a bottom wall 3B, a front wall 3C, not shown, which are arranged inside the outer box 2 at intervals. A box-shaped heat-conducting inner box 3 composed of rear side walls and left and right side walls 3E, 3F, a storage chamber 10 configured to be hermetically sealed in the inner box 3, and the upper, lower, front, rear, left and right boxes 2, And an air circulation space 11 formed between the three.

Each wall 3A, 3B, 3 which constitutes the inner box 3
C, 3E, and 3F (similar to the rear side wall) are each composed of a single or a plurality of panels made of stainless steel plates, and part of the left and right side walls 3E and 3F are generated from the seedlings of fresh flowers to be stored. Equipped with green tuff R that adsorbs ethylene gas. Further, the top wall 3A of the inner box 3 is gradually inclined to the left and right with the center as the apex, so that the water droplets attached to the lower surface of the top wall 3A do not fall downward as they are, but travel along the inner surfaces of the left and right side walls 3E, 3F. I am trying to flow. The front wall 2C of the outer box 2 is formed with an article entrance / exit through which agricultural products such as fresh flowers and seedlings are put in / out, and the article entrance / exit is closed so that the storage chamber 10 can be closed.

A cooler 12 which constitutes a refrigeration cycle of a cooling device 14 and a first blower 13 which comprises a blower fan and a blower fan motor are arranged on the lower surface of the upper end of the ceiling wall 3A which constitutes the air circulation space 11. A drainage device 15 including a drainage pipe with a heater, which is provided outside the outer box 2, is connected to the bottom of the cooler 12. Also, the top wall 3
A compressor 21 and a condenser 22 which constitute the refrigeration cycle of the cooling device 14 are installed on the upper surface of A. On the other hand, the first
A second blower 18 is attached to the lower left side of the upper wall 3A located on the leeward side of the blower 13 of the above, and the same electric heater is attached to the lower side of the top 3A between the blowers 13 and 18. The first and second heaters 23 and 24 are attached.

A controller 26 for setting or displaying the temperature in the storage chamber 10 is attached to the front wall 2C on the side of the heat insulating door D, and an electrical equipment box 27 is provided below the controller 26.
Is provided. As shown in FIG. 4, first and second outside air temperature thermostats 28 and 29 as a heater control device and an electronic thermostat 31 as a temperature control device are housed in the electrical equipment box 27. Temperature sensing part 2 of the first and second outside air temperature thermostats 28, 29
8A and 29A are arranged outside the outer box 2 to detect the outside air temperature, and the temperature sensing section 31A of the electronic thermostat 31 is provided inside the storage chamber 10 to detect the temperature of the storage chamber 10. Further, in the figure, 36 and 37 are the first and second heaters 2.
These are overheat protectors provided in the vicinity of 3 and 24, respectively.
A white, orange, and green power lamp 33W, a heating lamp 33I, and a cooling lamp 33G, which indicate the operation mode, are provided on the front surface of the lid 32 of the electrical equipment box 27, and the operation mode is switched between the heating mode and the cooling mode. A changeover switch 34 is provided.

In the electric circuit of the control device C of FIG. 1, the first heater 23 is a contact of the first outside air temperature thermostat 28, the overheat protector 36, and the changeover contact 3 of the changeover switch 34.
3 phase AC20 in series with the terminal 40 of 9 and the common terminal 41.
It is connected between the R and T phases of a 0V power supply. The second heater 24 is connected in series with the contacts of the second outside temperature thermostat 29, the overheat protector 37, and the contacts 42 of the changeover switch 34.
It is connected between the S and T phases of a 200 VAC power supply. The cooling device 14 detects the temperature in the storage room 10 and detects the temperature in the compressor 21.
Has its own thermostat 43 (setting is, for example, the temperature in the air circulation space 11 is 0 ° C. or less) for controlling the operation of
The electric components such as the compressor 21 are connected to the three-phase power source, but for the R phase, the contact 4 of the electronic thermostat 31 is used.
4 is installed. In addition, electronic thermostat 31
A contact 46 of the changeover switch 34 is connected in parallel to the contact 44 of the switch. The power supply lamp 33W is connected between the R phase and the T phase of the three-phase power supply, and the heating lamp 33I is connected between the R phase and the T phase of the power supply in series with the terminal 40 and the common terminal 41 of the changeover contact 39 of the changeover switch 34. The cooling lamp 33G is connected in series with the terminal 47 of the changeover contact 39 of the changeover switch 34 and the common terminal 41 between the R phase and the T phase of the power supply.

The operation of the above configuration will be described with reference to the timing chart of FIG. The first outside air temperature thermostat 28 is set to close the contact when the outside air temperature is + 10 ° C. or less, and the second outside air temperature thermostat 29 is set to close the contact when the outside air temperature is + 20 ° C. or less. Further, the overheat protectors 36 and 37 open their contacts when the temperature exceeds + 50 ° C. Furthermore, the electronic thermostat 31 has contact points 4 when the temperature in the storage chamber 10 rises above + 30 ° C.
4 shall be closed.

First, when seedlings of flowers such as chrysanthemums are germinated and grown in the storage 1, they are stored in the storage chamber 10 and the changeover switch 34 is set to the heating mode as shown in FIG.
When the changeover switch 34 is set to the heating mode, the common terminal 41 is closed to the terminal 40, the contact 42 is closed, and the contact 46 is opened. When a three-phase 200V power source is applied to the control device C in this state, the power source lamp 33W and the heating lamp 33I are energized and lighted. For example, if the outside air temperature is low and + 10 ° C. or lower at night such as in winter, the first and second
Since the outside air temperature thermostats 28 and 29 close their contacts, both the first and second heaters 23 and 24 are energized to generate heat. Here, the second blower 18 is constantly operated after the power is turned on, and the air heated by the heaters 23 and 24 as described above is evenly circulated in the air circulation space 11 as indicated by an arrow in FIG. 2 or 3. Let As a result, the inside of the storage chamber 10 is indirect from all the wall surfaces of the inner box 3, and
It is heated evenly.

When the outside air temperature rises and becomes higher than + 10 ° C., the first outside air temperature thermostat 28 opens the contact, so that the heat generation of the first heater 23 is stopped and the inside of the air circulation space 11 becomes the second. It is heated only by the heater 24. Further, when the outside air temperature rises and becomes higher than + 20 ° C., the second outside air temperature thermostat 29 also opens the contact, so that the heat generation of the second heater 24 also stops. When the outside air temperature is low, the temperature inside the storage chamber 10 also becomes low. Therefore, it is necessary to strongly heat the inside of the storage chamber 10. However, when the outside air temperature rises, the temperature inside the storage chamber 10 also tends to rise. Therefore, if both heaters 23 and 24 are made to generate heat in a state where the outside air temperature is high, the inside of the storage chamber 10 will be overheated. However, in the present invention, when the outside air temperature becomes higher than + 10 ° C., the heat generation of the first heater 23 is stopped, and the heating amount is reduced by switching to the heating by only the second heater 24, so that the excessive heating is prevented. can do.
Especially, two outside air temperature thermostats 2 with different set values
Since the amount of heat generation is changed by 8 and 29, a simple mechanical thermostat can be adopted, and the cost is reduced.

By these controls, the inside of the storage chamber 10 is uniformly heated to a temperature of about + 25 ° C. regardless of the fluctuation of the outside air temperature, so that an environment suitable for the germination and growth of seedlings such as chrysanthemums can be constructed. Become. This eliminates the need for a conventional germination and growing work using a greenhouse or the like. When the temperature inside the storage chamber 10 reaches an abnormally high temperature of + 30 ° C. or higher due to a further rise in the outside air temperature, the electronic thermostat 31 closes the contact 44, and the cooling device 14 is energized (the thermostat 43 is naturally (Closed), the compressor 21 and the first air blower 13 are operated to exchange heat with the cooler 12 and cool air is blown into the air circulation space 11. As a result, the inside of the storage chamber 10 is cooled from the wall surface of the inner box 3, and the temperature is lowered. Electronic thermostat 3
1 opens the contact point 44 at a temperature of, for example, + 20 ° C., and by controlling these, the inside of the storage chamber 10 is set to an optimum environment for seedling germination and growth.

When the germinated seedlings are stored until shipping by such control, the changeover switch 34 is switched to the cooling mode while being stored in the storage chamber 10 as it is. When the changeover switch 34 is set to the cooling mode, the common terminal 41 is closed to the terminal 47, the contact 42 is opened, and the contact 46.
Close. As a result, the heating lamp 33I is turned off, the cooling lamp 33G is turned on instead, the first and second heaters 23 and 24 are de-energized, and the contact 44 of the electronic thermostat 31 is short-circuited at the contact 46. Both are inoperative on the circuit. On the other hand, when the contact 46 is closed, the cooling device 14 is energized by opening and closing the thermostat 43.

Assuming that the set temperature in the storage chamber 10 in the cooling mode is 0 ° C., the thermostat 43 opens the contact point when the temperature in the air circulation space 11 reaches, for example, −3 ° C. It closes when the temperature rises to ℃. As a result, the compressor 21 and the first air blower 13 of the cooling device 14 are controlled to operate / stop, and the cool air that has exchanged heat with the cooler 12 flows from the first air blower 13 to the air circulation space 11
Is discharged inside. Then, as described above, the second air blower 18 which is constantly operated circulates evenly in the air circulation space 11 as indicated by the arrows in FIGS. 2 and 3. As a result, the wall surface of the inner box 3 is cooled to about -2 ° C on average, and the storage chamber 1
The inside of 0 is indirectly cooled from the wall surface of the inner box 3 and maintained at about 0 ° C. Further, the indirect cooling suppresses the drying in the storage chamber 10 and maintains the high humidity, so that the seedlings after the germination and growth can be stored with good freshness. Furthermore, since the ethylene gas generated from the seedlings is adsorbed by the green tuff R, aging of the seedlings due to ethylene gas is also prevented.

[0021]

As described in detail above, according to the invention of claim 1, the air heated by the heat generated by the heater is circulated within the space between the inner and outer boxes, so that the storage chamber is heated substantially uniformly from the inner wall surface. Can be warmed. In addition, the control device increases the heat generation amount of the heater when the outside air temperature is low and decreases it when the outside air temperature is high, which is suitable for seedling germination and growth regardless of changes in the outside air temperature. The environment can be configured in the storage room, and the seedlings stored in the storage room can be germinated and grown well.

According to the invention of claim 2, in addition to the above, the plurality of heater control devices having different set values control the energization of the heaters respectively, so that the adjustment of the heating amount by the heater is simple. This can be achieved by using a mechanical thermostat or the like, and the cost can be reduced. Further, when the temperature in the storage room becomes too high due to the heat generated by the heater, the cooling device is operated to lower the air temperature in the space, so that an optimum environment for germination and growth can be formed in the storage room. Is possible

[Brief description of drawings]

FIG. 1 is an electric circuit diagram of a control device for a seedling growing storage according to the present invention.

FIG. 2 is a vertical side view of a seedling growing storage.

FIG. 3 is a perspective view of a seedling growing storage in a state where an outer box is seen through.

FIG. 4 is a diagram showing a configuration of an electrical equipment box.

FIG. 5 is a timing chart explaining the operation of each device of the seedling growing storage.

[Explanation of symbols]

 1 Seedling Growth Storage Cabinet 2 Outer Box 3 Inner Box 10 Storage Room 11 Air Circulation Space 14 Cooling Device 18 Second Blower Device 23 First Heater 24 Second Heater 28 First Outdoor Air Temperature Thermostat 29 Second Outdoor Air Temperature Thermostat 31 Electronic thermostat 34 Changeover switch

Claims (2)

[Claims] 1. A heat-insulating outer box, a heat-conducting inner box which is disposed inside the outer box with a predetermined space therebetween and which forms a storage chamber therein, and a heat-conducting outer box which is arranged within the space. It is provided with a heater provided, an air blower that circulates air within the interval, and a controller that controls energization of the heater based on the outside air temperature, and the controller controls the heater when the outside air temperature is low. A seedling growing storage facility that increases the amount of heat generation and decreases it when the outside air temperature is high. 2. A heat-insulating outer box, a heat-conducting inner box which is disposed inside the outer box with a predetermined interval and which forms a storage chamber therein, and a heat-conducting outer box which is disposed within the interval. A plurality of heaters and cooling devices provided, a blower device that circulates air within the space, a plurality of heater control devices that respectively control the energization of each heater at a predetermined set value based on the outside air temperature, and the storage chamber And a temperature control device for controlling the operation of the cooling device based on the temperature of the plurality of heater control devices, each of the plurality of heater control devices has a different set value, and the temperature control device has a predetermined temperature in the storage chamber. A seedling-raising storehouse, characterized in that the cooling device is operated when the temperature becomes high.