JP6988443B2 - Internal temperature control device - Google Patents

Description

The present invention relates to an internal temperature control device that performs heat shock treatment on crops stored in a storage.

Conventionally, there is a refrigerating apparatus described in Patent Document 1. This refrigerating apparatus includes a heat exchanger for heating that heats the inside of the container and a heat exchanger for cooling that cools the inside of the container. This refrigeration system controls the heat exchanger to heat the inside of the container for a predetermined period of time before controlling the heat exchanger to cool the inside of the container for cold storage of fruits and vegetables. I try to give a heat shock to the fruits and vegetables stored inside. By giving such a heat shock to fruits and vegetables, the occurrence of chilling injury and the like can be suppressed, and the quality can be maintained.

Japanese Unexamined Patent Publication No. 2016-133295

However, with the control as described in Patent Document 1, it may not be possible to obtain a sufficient quality maintenance effect due to heat shock depending on the situation before harvesting the crop. For example, crops harvested in spring may have a quality maintenance effect due to heat shock, but crops harvested in summer may not have a sufficient quality maintenance effect due to heat shock.

The present invention has been made in view of the above problems, and an object of the present invention is to ensure that a quality improvement effect due to heat shock can be obtained.

In order to achieve the above object, the invention according to claim 1 includes a cooler (13) for cooling the inside of the storage (2) and a heater (15) for heating the inside of the storage. Pre-harvest, which is a temperature control device inside the refrigerator that controls the cooler and heater to perform heat shock treatment on the crops stored in the storage, and is the temperature condition before harvesting the crops stored in the storage. Conditions are collected, heat shock treatment conditions to be applied to the crop are specified based on this pre-harvest condition, and coolers and heaters are controlled according to these heat shock treatment conditions.

According to such a configuration, the heat shock treatment conditions to be applied to the crops are specified based on the pre-harvest conditions which are the pre-harvest temperature conditions of the crops stored in the storage, and the crops are cooled according to the heat shock treatment conditions. Since the vessel and the heater are controlled, the quality improvement effect due to the heat shock can be obtained more reliably.

The reference numerals in parentheses of each means described in this column and the scope of claims indicate the correspondence with the specific means described in the embodiments described later.

It is the figure which showed the state of the storage which installed the temperature control device in the refrigerator. It is a block diagram of the temperature control device in a refrigerator. It is an external view of a house where an information processing apparatus is installed. It is an external view of a transport box. It is a figure showing the pre-harvest condition registered in the storage part of the temperature control device in a refrigerator. It is a flowchart of the control part of the refrigerator temperature control device. This is a comparative example of the chilling injury index when tomatoes are subjected to heat shock treatment including high temperature treatment and when tomatoes are stored at low temperature without being subjected to high temperature treatment. It is a figure which showed the effect when the strawberry of a different kind was treated at a high temperature.

The configuration of the internal temperature control device according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. The internal temperature control device 1 includes an evaporator 13 as a cooler for cooling the inside of the storage 2, and an electric heater 15 as a heater for heating the inside of the storage 2, and is a harvest of crops and the like. The temperature inside the storage 2 is controlled.

The internal temperature control device 1 includes a compressor 10, a radiator 11, an expansion valve 12, an evaporator 13, a heater contactor 103, an electric heater 15, a temperature sensor 16, a control unit 100, a storage unit 101, a receiver 102, and a barcode. It is equipped with a reader 104. The compressor 10, the radiator 11, the expansion valve 12, and the evaporator 13 constitute the compression type refrigeration cycle, and are connected via the refrigerant pipe 14.

The compressor 10 compresses and discharges the refrigerant. The compressor 10 is composed of an electric compressor that rotationally drives a fixed-capacity compression mechanism having a fixed discharge capacity by an electric motor. The rotation speed of the electric motor of the compressor 10 is controlled according to the control signal output from the control unit 100.

The refrigerant inlet side of the radiator 11 is connected to the refrigerant discharge side of the compressor 10. The radiator 11 is a heat exchanger that dissipates heat by exchanging heat between the outside air blown from the first blower 111 and the refrigerant discharged from the compressor 10.

The refrigerant inlet side of the expansion valve 12 is connected to the refrigerant outlet side of the radiator 11. The expansion valve 12 is a decompression device that decompresses and expands the refrigerant flowing out of the radiator 11. The expansion valve 12 is composed of an electric expansion valve having a valve body configured so that the throttle opening degree can be changed and an electric actuator for changing the throttle opening degree of the valve body. The throttle opening of the expansion valve 12 is controlled according to the control signal output from the control unit 100.

The refrigerant inlet side of the evaporator 13 is connected to the refrigerant outlet side of the expansion valve 12. The evaporator 13 is a heat exchanger that evaporates the refrigerant by exchanging heat between the air and the refrigerant that are circulated and blown in the internal space of the storage 2 by the second blower 131. The air blown from the second blower 131 to the evaporator 13 is cooled by the endothermic action of the latent heat of vaporization of the refrigerant in the evaporator 13. The evaporator 13 corresponds to a cooler that cools the inside of the storage 2.

The electric heater 15 is a device that heats the inside of the storage 2. The electric heater 15 of the present embodiment heats the inside of the storage 2 with the heat generated by passing an electric current through the resistor. The electric heater 15 corresponds to a heater that heats the inside of the storage 2.

The heater contactor 103 is composed of an electromagnetic contactor that opens and closes an electric circuit that supplies an electric current to the electric heater 15. The heater contactor 103 controls the opening and closing of the electric circuit according to the control signal output from the control unit 100.

The temperature sensor 16 is installed inside the storage 2. The temperature sensor 16 detects the internal temperature of the storage 2, and outputs a signal indicating the detected temperature to the control unit 100.

The control unit 100 is configured as a microcomputer including a CPU that performs control processing and arithmetic processing, a ROM that stores programs and data, a storage unit such as RAM, and the like. The control unit 100 performs various processes according to the program stored in the storage unit.

A storage unit 101, a receiver 102, and a barcode reader 104 are connected to the control unit 100.

The storage unit 101 is an external storage device that stores various data. The storage unit 101 is composed of a hard disk drive. Various data are written in the storage unit 101 in response to a write instruction from the control unit 100.

The receiver 102 is a device that receives a signal from the outside and outputs the received data to the control unit 100. The receiver 102 of the present embodiment can receive a signal transmitted from the information processing apparatus 3 described later.

The barcode reader 104 is a device that reads a barcode and outputs the read data. In the present embodiment, a barcode reader 104 is used to read a barcode attached to a transport box 4 such as a cardboard box or a plastic container for storing crops.

Next, the information processing apparatus 3 will be described with reference to FIG. The information processing device 3 is installed in the house to comprehensively manage the environment such as the temperature in the house in which the crop is cultivated and the occurrence of pests. The information processing apparatus 3 is composed of a computer including an operation unit, a display unit, and a control unit (none of which are shown). A plurality of temperature sensors 30 are connected to the information processing device 3. The temperature sensor 30 detects the temperature and outputs a signal indicating the detected temperature to the information processing apparatus 3.

The control unit of the information processing apparatus 3 is configured as a computer equipped with a CPU, a memory, an I / O, and the like, and the CPU executes various processes according to a program stored in the memory.

As the processing of the control unit of the information processing apparatus 3, the processing of periodically collecting the temperatures detected by the plurality of temperature sensors 30 and storing them in the memory as temperature data, and creating a barcode indicating the pre-harvest condition of the crop. There is a process, a process of printing the created barcode on a sticker with a printer (not shown), and the like.

The harvested crops are placed in a transport box 4 to which a bar code sticker on which a bar code indicating the pre-harvest conditions of the crop is printed is affixed, and are transported to the storage 2.

The crop pre-harvest conditions include information such as crop items (eg, tomatoes), varieties (eg, XX tomatoes), maturity (eg, mature green), and maximum temperature for 30 days immediately before harvesting. Is done.

FIG. 4 is an external view of the transport box 4. A bar code sticker 40 created by the information processing apparatus 3 is attached to the transport box 4. The crops harvested in the house are transported to the storage 2 using the transport box 4.

By the way, when summer vegetables such as tomatoes are stored at low temperature in a low temperature refrigerator, there is a problem that chilling injury is likely to occur. Specific examples of chilling injury include softening in which cells are destroyed and softened, for example, poor ripening in which tomatoes do not turn red, and pitting in which spots and darkening occur on the epidermis.

In order to suppress such chilling injury, the temperature control device 1 in the refrigerator of the present embodiment heats the inside of the storage before or during the low temperature storage of the crop, and the crop is stored in the storage. A heat shock treatment is performed to give a heat shock to the crop.

In this way, before or during low-temperature storage of crops, the inside of the storage is heated to stress the tomatoes, and then low-temperature storage makes it possible to suppress the occurrence of chilling injury, resulting in high quality. It will be possible to maintain.

According to the research by the present inventors, it was found that the optimum temperature condition for applying a heat shock differs depending on the pre-harvest condition, which is the temperature condition under which the crop is placed before harvesting. For example, tomatoes harvested in May and tomatoes harvested in November have different pre-harvest conditions such as the maximum temperature in a predetermined period immediately before harvesting and the integrated temperature until the crop is harvested. It was found that the optimum temperature conditions to be given to the crop differ depending on such pre-harvest conditions.

In the storage unit 101 of the internal temperature control device 1 of the present embodiment, heat shock treatment is performed on the crop so that the occurrence of chilling injury of the crop is suppressed when the pre-harvest condition of the crop satisfies a predetermined condition. The condition is remembered.

FIG. 5 is an example of registration data of heat shock processing conditions. The input information includes the item (tomato), variety (○○ tomato), maturity (for example, mature green), and the maximum temperature (25 ° C) for 30 days immediately before harvesting, and the output information includes the high temperature processing temperature (high temperature processing temperature (25 ° C)). 38 ° C.), high temperature treatment time (72 hours) is included.

The control unit 100 of the internal temperature control device 1 collects pre-harvest conditions, which are temperature conditions before harvesting the crops stored in the storage 2, and the crops stored in the storage 2 based on the pre-harvest conditions. The heat shock treatment conditions to be carried out are specified, and the treatment for controlling the cooler and the heater is carried out according to the heat shock treatment conditions.

Although FIG. 5 shows the registration data of the heat shock treatment conditions for XX tomatoes, in reality, the registration data of the heat shock treatment conditions for crops such as bananas, eggplants, and mangoes is also the temperature inside the refrigerator. It is registered in the storage unit 101 of the control device 1.

Next, the processing of the control unit 100 of the internal temperature control device 1 will be described with reference to FIG. It is assumed that the crops stored in the transport box 4 have been carried into the storage 2. The control unit 100 starts the process shown in FIG. 6 according to the operation of the operator.

First, the control unit 100 collects the pre-harvest conditions of the crops in the storage 2 in S100. Specifically, the pre-harvest conditions of the crop are collected by having the bar code reader 104 read the bar code of the bar code sticker 40 attached to the transport box 4 as shown in FIG. The pre-harvest conditions include crop items (eg, tomatoes), crop varieties (eg, XX tomatoes), and maximum temperature (eg, 25 ° C.) within a predetermined period immediately before harvesting the crop.

Next, in S102, the control unit 100 determines whether or not the crop in the storage 2 is a variety having a heat shock effect. For example, tomatoes, bananas, eggplants, mangoes and the like are determined to be items (varieties) having a heat shock effect, and apples and the like are determined to be items (varieties) having no heat shock effect.

Here, when the crop in the storage 2 is XX tomato, the control unit 100 determines the pre-harvest condition of the crop in the storage 2 based on the pre-harvest condition collected in S100 in S104. Is determined. Specifically, when the maximum temperature within a predetermined period immediately before harvesting the crops included in the pre-harvest conditions is below the predetermined temperature, the pre-harvest conditions of the crops collected by the information gathering department satisfy the predetermined conditions. judge.

More specifically, when the maximum temperature of the crops in the storage 2 on the 30th day immediately before harvesting is 26.4 ° C. or lower, the pre-harvest conditions of the crops collected by the information gathering department set the predetermined conditions. Judge that it is satisfied.

If the maximum temperature on the 30th day immediately before harvesting the crops in the storage 2 is higher than 26.4 ° C, it is determined that the pre-harvest conditions for the crops collected by the information gathering department do not meet the predetermined conditions. do.

Here, when the maximum temperature on the 30th day immediately before the harvest of the crop in the storage 2 is 26.4 ° C. or less based on the pre-harvest conditions collected in S100, the control unit 100 is set in S106. The heat shock processing conditions to be applied to the crop are read from the storage unit 101 and specified.

For example, as shown in FIG. 5, the crops in the storage 2 have the item (tomato), the variety (○○ tomato), and the maximum temperature (25 ° C.) for 30 days before harvesting, and the high temperature treatment temperature is high. When the high temperature treatment time is registered in the storage unit 101 as 38 ° C. and the high temperature treatment time is 72 hours, the high temperature treatment temperature is specified as 38 ° C. and the high temperature treatment time is 72 hours.

Next, the control unit 100 performs the heat shock treatment at the first temperature in S106 for the first period. Here, the heat shock treatment is carried out with the first temperature set to 38 ° C., which is the high temperature treatment temperature, and the first period set to 72 hours, which is the high temperature treatment time. The control unit 100 controls the heater contactor 103 and the electric heater 15 so that the temperature detected by the temperature sensor 16 approaches 38 ° C. for 72 hours.

Next, when the first period elapses, the control unit 100 carries out a low temperature storage process in S110. Here, the low temperature storage treatment is carried out so that the temperature in the storage 2 becomes the low temperature treatment temperature (for example, 3 ° C.) for 2 weeks (336 hours) which is the low temperature treatment period. Specifically, the rotation speed of the electric motor of the compressor 10, the first blower 111, the second blower 131, and the like are controlled so that the temperature detected by the temperature sensor 16 approaches the low temperature processing temperature for 336 hours. Then, when the second period elapses, the control unit 100 ends this process.

Further, at the time of determination in S104, if the maximum temperature on the 30th day immediately before harvesting the crop in the storage 2 is higher than 26.4 ° C. or lower, the control unit 100 sets the crop in S107. Specify the heat shock treatment conditions to be implemented. Here, the high temperature treatment temperature is specified as 41 ° C. and the high temperature treatment period is specified as 72 hours.

Next, the control unit 100 performs the heat shock treatment at the second temperature in S106 for the second period. Here, the heat shock treatment is performed with the second temperature set to 41 ° C., which is the high temperature treatment temperature, and the second period set to 72 hours, which is the high temperature treatment time. The control unit 100 controls the heater contactor 103 and the electric heater 15 so that the temperature detected by the temperature sensor 16 approaches 41 ° C. for 72 hours.

Next, when the second period elapses, the control unit 100 carries out a low temperature storage process in S110. Then, when the second period elapses, the control unit 100 ends this process.

Further, when the crop in the storage 2 is an item (variety) having no heat shock effect such as apple, the determination of S102 is NO, and the control unit 100 does not perform the heat shock treatments S106 and S108, and S110. Proceed to to carry out cold storage treatment.

Next, the chilling injury index when the tomato is subjected to heat shock treatment including high temperature treatment and when the tomato is stored at low temperature without performing high temperature treatment will be described with reference to FIG. 7.

FIG. 7 shows the case where tomatoes harvested in May, June, and November were subjected to heat shock treatment including high temperature treatment (high temperature treatment) and the tomatoes were stored at low temperature without high temperature treatment (no treatment). ) Shows a comparative example of the chilling injury index.

The chilling injury index is an index that comprehensively evaluates softening in which cells are destroyed and softened, for example, poor ripening in which tomatoes do not turn red, and pitting in which spots and darkening occur on the epidermis. The larger the chilling injury index, the worse the quality.

The maximum temperature of tomatoes harvested in May for 30 days before harvest was 26.4 ° C, the maximum temperature of tomatoes harvested in June before harvest was 29.9 ° C, and the maximum temperature of tomatoes harvested in November was 29.9 ° C. The maximum temperature for the previous 30 days is 28.6 ° C.

The high temperature treatment on the right side of FIG. 7 shows the chilling injury index when the high temperature treatment was carried out at 38 ° C. for 3 days, the temperature was stored at 3 ° C. for 2 weeks, and then the shelf holding test was carried out at 20 ° C. There is. The untreated product on the left side of FIG. 7 represents the chilling injury index when the product was stored at a low temperature of 3 ° C. for 2 weeks without being subjected to a high temperature treatment and then subjected to a shelf-holding test at 20 ° C.

When tomatoes harvested in May and June were subjected to heat shock treatment including high temperature treatment, the chilling injury index was smaller than when the tomatoes were stored at low temperature without high temperature treatment. ing. That is, the occurrence of chilling injury is suppressed by the heat shock treatment including the high temperature treatment.

However, when the tomatoes harvested in November were subjected to heat shock treatment including high temperature treatment, the chilling injury index became larger than that when the tomatoes were stored at low temperature without high temperature treatment. There is. That is, the occurrence of chilling injury is not suppressed by the heat shock treatment including the high temperature treatment.

In particular, the maximum temperature for 30 days before harvesting tomatoes harvested in May is 26.4 ° C, and when the maximum temperature for 30 days before harvesting tomatoes is 26.4 ° C or less, it is 38 ° C for 3 days. It was confirmed that the chilling injury index was significantly suppressed when the tomatoes were stored at a low temperature at 3 ° C. for 2 weeks after the high temperature treatment.

FIG. 8 shows the effect of high temperature treatment at 42 ° C. for 4 hours on strawberry varieties (○○ strawberry, △△ strawberry, XX strawberry). Specifically, it shows mold suppression, putrefaction control, ose control, wrinkle control, and taste maintenance. Ose means that it is crushed by its own weight.

The mold-suppressing effect was confirmed for ○○ strawberry and XX strawberry, but the mold-suppressing effect could not be confirmed for △△ strawberry. In addition, ○○ strawberry was able to maintain the taste, but △△ strawberry and XX strawberry could not maintain the taste.

As described above, when the heat shock treatment is carried out under the same conditions, it can be seen that the effect of the heat shock treatment differs depending on the variety. That is, it is preferable to change the heat shock treatment conditions for each product type.

As described above, the internal temperature control device of the present embodiment includes an evaporator 13 that cools the inside of the storage 2 and an electric heater 15 that heats the inside of the storage 2. Then, the evaporator 13 and the electric heater 15 are controlled to perform heat shock treatment on the crops stored in the storage 2. Further, the internal temperature control device collects pre-harvest conditions, which are temperature conditions before harvesting the crops stored in the storage 2, and sets heat shock treatment conditions to be applied to the crops based on the pre-harvest conditions. Identify. Then, the cooler and the heater are controlled according to the heat shock processing conditions.

According to such a configuration, the heat shock treatment conditions to be applied to the crops are specified based on the pre-harvest conditions which are the pre-harvest temperature conditions of the crops stored in the storage, and evaporation is performed according to the heat shock treatment conditions. Since the vessel 13 and the electric heater 15 are controlled, the quality maintenance effect due to the heat shock can be obtained more reliably.

Further, as described above, the temperature control device in the refrigerator stores the heat shock treatment conditions to be applied to the crop so that the occurrence of chilling injury of the crop is suppressed when the pre-harvest condition of the crop meets the predetermined conditions. The storage unit 101 is provided. Then, it is determined whether or not the pre-harvest condition of the crop collected by the information gathering unit satisfies the predetermined condition, and if it is determined that the pre-harvest condition of the crop satisfies the predetermined condition, it is carried out for the crop. The heat shock processing conditions to be performed are read from the storage unit and specified.

In this way, when it is determined that the pre-harvest condition of the crop satisfies the predetermined condition, the heat shock processing condition to be applied to the crop can be read from the storage unit and specified.

In addition, as described above, the Information Collection Department collects crop information including pre-harvest conditions and crop varieties of crops stored in the storage, and the Processing Condition Specific Department collects crops collected by the Information Collection Department. Identify the heat shock treatment conditions to be applied to the crop based on the crop pre-harvest conditions and crop varieties contained in the information.

In this way, since the heat shock treatment conditions to be applied to the crop are specified based on the crop pre-harvest conditions and the crop varieties, the coolers and heaters are used for different varieties of crops under different heat shock treatment conditions. Can be controlled.

Further, as described above, the pre-harvest condition includes the maximum temperature within a predetermined period immediately before the crop is harvested. Further, the storage unit stores the heat shock treatment conditions to be performed on the crop when the maximum temperature within the predetermined period immediately before harvesting, which is included in the pre-harvest condition, is equal to or lower than the predetermined temperature.

In addition, when the maximum temperature within the predetermined period immediately before harvesting of the crops included in the pre-harvest conditions is equal to or lower than the predetermined temperature, the temperature control device in the refrigerator sets the pre-harvest conditions of the crops collected by the information gathering unit to the predetermined conditions. Judge that it is satisfied.

In this way, when the maximum temperature within the predetermined period immediately before harvesting the crops included in the pre-harvest condition is below the predetermined temperature, the maximum temperature within the predetermined period immediately before harvesting the crops included in the pre-harvest condition is below the predetermined temperature. In this case, the heat shock treatment conditions to be applied to the crop can be read from the storage unit and specified.

Further, the internal temperature control device includes a bar code reader 104 that reads a bar code indicating the pre-harvest condition. Then, the pre-harvest conditions of the crop are collected by the barcode read by the barcode reader 104.

In this way, by collecting the pre-harvest conditions of the crop by the barcode read by the barcode reader 104, the pre-harvest conditions can be accurately collected.

(Other embodiments)
(1) In the above embodiment, when the pre-harvest conditions of the crop in the storage 2 are collected in S100, the bar code of the bar code sticker 40 is read by using the bar code reader 104 to pre-harvest the crop. Changed to collect harvest conditions.

On the other hand, the pre-harvest condition of the crop may be collected by receiving the signal indicating the pre-harvest condition of the crop in the storage 2 from the information processing apparatus 3 via the receiver 102.

In this way, by receiving a signal indicating the pre-harvest condition of the crop in the storage 2 from the information processing apparatus 3 via the receiver 102, the pre-harvest condition of the crop is collected, and the pre-harvest condition is accurately set. It can be collected quickly and quickly.

(2) In the above embodiment, the barcode reader 104 for reading the barcode is provided, but for example, a QR code reader for reading the QR code may be provided instead of the barcode reader 104 (QR). The code is a registered trademark).

(3) In the above embodiment, the pre-harvest conditions of the crops in the storage 2 are collected in S100. On the other hand, the amount of ethylene in the cultivated area before harvesting may be collected together with the pre-harvest conditions.

(4) In the above embodiment, the electric heater 15 is used as a heater for heating the inside of the storage, but the heater is not limited to the electric heater 15, and for example, a gas heater or the like can be used.

(5) In the above embodiment, an example of cultivating a crop in a house is shown, but it can also be applied to a case where the crop is cultivated in an alley.

(6) Pre-harvest conditions include crop items, crop varieties, fertilization history, cumulative temperature until the crop is harvested, cumulative humidity until the crop is harvested, maximum temperature until the crop is harvested, It can include at least one of the minimum temperature until the crop is harvested, the cumulative time the crop has been exposed to above a predetermined temperature and the pest outbreak situation.

The present invention is not limited to the above-described embodiment, and can be appropriately modified within the scope of the claims. Further, the above embodiments are not unrelated to each other, and can be appropriately combined unless the combination is clearly impossible. Further, in each of the above embodiments, it goes without saying that the elements constituting the embodiment are not necessarily essential except when it is clearly stated that they are essential or when they are clearly considered to be essential in principle. stomach. Further, in each of the above embodiments, when numerical values such as the number, numerical values, quantities, and ranges of the constituent elements of the embodiment are mentioned, when it is clearly stated that they are particularly essential, and when it is clearly limited to a specific number in principle. It is not limited to the specific number except when it is done. Further, in each of the above embodiments, when the material, shape, positional relationship, etc. of the constituent elements, etc. are referred to, except when specifically specified or when the material, shape, positional relationship, etc. are limited to a specific material, shape, positional relationship, etc. in principle. , The material, shape, positional relationship, etc. are not limited.

(summary)
According to the first aspect shown in part or all of the above embodiments, the temperature control device in the refrigerator includes a cooler for cooling the inside of the storage and a heater for heating the inside of the storage. It is equipped with. Then, the cooler and the heater are controlled to perform heat shock treatment on the crops stored in the storage.

In addition, the temperature control device inside the refrigerator is provided with an information collecting unit that collects pre-harvest conditions, which are temperature conditions before harvesting the crops stored in the storage. It also has a processing condition specifying unit that specifies the heat shock processing conditions to be applied to the crop based on the pre-harvest conditions collected by the information collecting unit. Further, it is provided with a temperature control unit that controls a cooler and a heater according to the heat shock processing conditions specified by the processing condition specifying unit.

Further, according to the second viewpoint, the temperature control device in the refrigerator performs a heat shock treatment on the crop so as to suppress the occurrence of chilling injury of the crop when the pre-harvest condition of the crop satisfies a predetermined condition. It has a storage unit that stores conditions.

In addition, it is determined whether or not the pre-harvest conditions of the collected crops satisfy the predetermined conditions, and if it is determined that the pre-harvest conditions satisfy the predetermined conditions, the heat shock treatment conditions to be applied to the crops are determined. , Read from the storage unit and specify.

In this way, when it is determined that the pre-harvest condition of the crop satisfies the predetermined condition, the heat shock processing condition to be applied to the crop can be read from the storage unit and specified.

Further, according to the third viewpoint, the information gathering unit collects crop information including pre-harvest conditions and crop varieties of crops stored in the storage. In addition, the processing condition specifying unit specifies the pre-harvest conditions of the crop included in the crop information collected by the information collecting unit and the heat shock processing conditions to be performed on the crop based on the crop variety.

In this way, since the heat shock treatment conditions to be applied to the crop are specified based on the crop pre-harvest conditions and the crop varieties, the coolers and heaters are used for different varieties of crops under different heat shock treatment conditions. Can be controlled.

Further, according to the fourth aspect, the pre-harvest condition includes the maximum temperature within a predetermined period immediately before the crop is harvested. Further, the storage unit stores the heat shock treatment conditions to be performed on the crop when the maximum temperature within the predetermined period immediately before harvesting, which is included in the pre-harvest condition, is equal to or lower than the predetermined temperature.

In addition, when the maximum temperature within the predetermined period immediately before harvesting the crops included in the pre-harvest conditions is equal to or lower than the predetermined temperature, the condition determination unit satisfies the predetermined conditions for the pre-harvest conditions of the crops collected by the information gathering unit. It is determined that there is.

Then, when the condition determination unit determines that the pre-harvest condition of the crop satisfies the predetermined condition, the processing condition specifying unit sets the maximum temperature within the predetermined period immediately before the harvest of the crop included in the pre-harvest condition to the predetermined temperature. The heat shock treatment conditions to be applied to the crop in the following cases are read from the storage unit and specified.

In this way, when the maximum temperature within the predetermined period immediately before harvesting the crops included in the pre-harvest condition is below the predetermined temperature, the maximum temperature within the predetermined period immediately before harvesting the crops included in the pre-harvest condition is below the predetermined temperature. In this case, the heat shock treatment conditions to be applied to the crop can be read from the storage unit and specified.

According to the fifth viewpoint, the pre-harvest conditions include crop items, crop varieties, fertilization history, cumulative temperature until the crop is harvested, cumulative humidity until the crop is harvested, and crop harvest. Includes at least one of the maximum temperature to be harvested, the minimum temperature to harvest the crop, the cumulative time the crop has been exposed to above a predetermined temperature and the pest outbreak situation.

Thus, the pre-harvest conditions include crop items, crop varieties, fertilization history, cumulative temperature until the crop is harvested, cumulative humidity until the crop is harvested, and maximum temperature until the crop is harvested. It can include at least one of the minimum temperature until the crop is harvested, the cumulative time the crop has been exposed to above a predetermined temperature and the pest outbreak situation.

Further, according to the sixth aspect, the temperature control device inside the refrigerator is provided with an identification information reader that reads an identification code indicating the pre-harvest condition, and the information collecting unit is a crop with the identification code read by the identification information reader. Collect pre-harvest conditions.

In this way, by collecting the pre-harvest conditions of the crop by the identification code read by the identification information reader, the pre-harvest conditions can be accurately collected.

Further, according to the seventh aspect, a receiver for receiving information for specifying the pre-harvest condition is provided, and the information collecting unit collects the pre-harvest condition via the receiver.

In this way, by receiving the signal indicating the pre-harvest condition via the receiver and collecting the pre-harvest condition, the pre-harvest condition can be collected accurately and promptly.

Explaining the correspondence between the configuration in the above embodiment and the configuration of the claims, the processing of S100 corresponds to the information collecting unit, the processing of S105 and S107 corresponds to the processing condition specifying unit, and S106 and S108. , S110 corresponds to the temperature control unit. Further, S104 corresponds to a condition determination unit, and a barcode reader 104 and a QR code reader (not shown) correspond to an identification information reader.

1 Internal temperature control device 10 Compressor 11 Radiator 12 Expansion valve 13 Evaporator 15 Electric heater 16 Temperature sensor 100 Control unit 101 Storage unit 102 Receiver 103 Heater contactor 104 Bar code reader 3 Information processing device 4 Transport box 30 Temperature Sensor 40 barcode seal

Claims (7)

A cooler (13) for cooling the inside of the storage (2) and a heater (15) for heating the inside of the storage are provided, and the cooler and the heater are controlled in the storage. An internal temperature control device that performs heat shock treatment on stored crops.
An information gathering unit (S100) that collects pre-harvest conditions, which are temperature conditions before harvesting the crops stored in the storage, and
A processing condition specifying unit (S105, S107) that specifies heat shock processing conditions to be performed on the crop based on the pre-harvest conditions collected by the information collecting unit.
An internal temperature control device including a temperature control unit (S106, S108, S110) for controlling the cooler and the heater according to the heat shock processing condition specified by the processing condition specifying unit. A storage unit (101) for storing heat shock treatment conditions to be performed on the crop so that the occurrence of chilling injury of the crop is suppressed when the pre-harvest conditions of the crop satisfy the predetermined conditions.
A condition determination unit (S104) for determining whether or not the pre-harvest condition of the crop collected by the information collection unit satisfies the predetermined condition is provided.
When the condition determination unit determines that the pre-harvest conditions of the crop satisfy the predetermined conditions, the processing condition specifying unit reads out the heat shock processing conditions to be applied to the crop from the storage unit. The internal temperature control device according to claim 1. The information collecting unit collects crop information including the pre-harvest conditions of the crop and the varieties of the crop stored in the storage.
The processing condition specifying unit specifies the heat shock treatment conditions to be performed on the crop based on the pre-harvest conditions of the crop and the varieties of the crop included in the crop information collected by the information collecting unit. The internal temperature control device according to claim 1 or 2. The pre-harvest condition includes the maximum temperature within a predetermined period immediately before the crop is harvested.
The storage unit stores the heat shock treatment conditions to be performed on the crop when the maximum temperature within the predetermined period immediately before harvesting, which is included in the pre-harvest conditions, is equal to or lower than the predetermined temperature.
In the condition determination unit, when the maximum temperature within a predetermined period immediately before harvesting of the crop included in the pre-harvest condition is equal to or lower than the predetermined temperature, the pre-harvest condition of the crop collected by the information collecting unit is the said. Judging that the prescribed conditions are met,
When the condition determination unit determines that the pre-harvest condition of the crop satisfies the predetermined condition, the processing condition specifying unit is the highest within the predetermined period immediately before the harvest of the crop included in the pre-harvest condition. The internal temperature control device according to claim 2 , wherein the heat shock processing conditions to be performed on the crop when the temperature is equal to or lower than a predetermined temperature are read out from the storage unit and specified. The pre-harvest conditions include the item of the crop, the variety of the crop, the fertilization history, the integrated temperature until the crop is harvested, the integrated humidity until the crop is harvested, and the crop until the crop is harvested. The storage according to any one of claims 1 to 3, which includes at least one of a maximum temperature, a minimum temperature until the crop is harvested, an accumulated time when the crop is exposed to a predetermined temperature or higher, and a pest outbreak situation. Internal temperature control device. The identification information reader (104) for reading the identification code indicating the pre-harvest condition is provided.
The internal temperature control device according to any one of claims 1 to 5, wherein the information collecting unit collects pre-harvest conditions for the crop by the identification code read by the identification information reader. A receiver (102) for receiving information for specifying the pre-harvest condition is provided.
The internal temperature control device according to any one of claims 1 to 5, wherein the information collecting unit collects the pre-harvest conditions via the receiver.

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