TW201923297A - Cold storage and cold storage management system - Google Patents

Abstract

An objective of the present invention is to provide a cold storage and a cold storage management system capable of accurately estimating cold storage capability. A cold storage 100A according to the present invention stores items and keeps the items cool and is used in delivery of the items, which includes: a cold accumulating body, and an estimating unit for setting a heat load level that is the level of a heat load received by the cold accumulating body from the ambient temperature during the delivery and estimating the refrigerating capacity of the cold accumulating body based on the heat load level.

Description

 Cold storage and cold storage management system  

The invention relates to a cold storage library for precooling a cold storage body for cold preservation, and a cold storage storage management system using the cold storage.

In the conventional technology, a logistics company, a distributor, and the like can mix and match a normal temperature product and a low-temperature product (for example, a product in which a fresh food material must be maintained in a low temperature state) in the same vehicle, and can be efficiently distributed. The product is stowed in a vehicle or the like in a state of being stored in a cold storage (hereinafter also referred to as "inside").

One type of cold storage system is equipped with a cold storage body, a cooling device, etc., and the cooling device is actuated to pre-cool the cold storage body before delivery, and the cooling device is stopped during delivery, and the interior of the storage is maintained at a low temperature by the cold storage body.

Patent Document 1 discloses a time period in which the cold storage of the cold storage body is kept cold in the cold storage body, and the time during which the cold heat stored in the cold storage body is exhausted is predicted, that is, the cold storage time in which the internal temperature can be maintained in the low temperature state is predicted (refer to Paragraph [0066]).

 (previous technical literature)    (Patent Literature)  

Patent Document 1: Japanese Patent No. 3875742

Here, the cold storage time varies depending on the outside air temperature around the cold storage (hereinafter also referred to as "ambient temperature"). However, the technique disclosed in the above Patent Document 1 does not take the ambient temperature into consideration, and thus cannot be accurate. Well presumed cold storage time.

If the estimation accuracy of the coldable time is low, the actual cold storage time is shorter than the predicted time, and the inside of the storage cannot be maintained at a low temperature until the end of the delivery. On the other hand, if the predicted time is shorter than the actual cold-storable time, although the storage can be kept at a low temperature until the end of the delivery, it is considered that the sufficient cold-keeping time required for the delivery cannot be ensured before delivery. Excessively pre-cooling the cold storage.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a cold storage and a cold storage management system that can accurately estimate the cooling capacity.

(1) In order to achieve the above object, the cold storage of the present invention is a cold storage for storing articles and storing the articles, and the cold storage system includes: a cold storage body; and an estimation unit that sets the cold storage body in the delivery. The level of the heat load subjected to the ambient temperature, that is, the heat load level, and the cold storage capacity of the cold storage body is estimated based on the aforementioned heat load level.

(2) In order to achieve the above object, the cold storage management system of the present invention includes: a cooling equipment; and a cooling storage management device that determines an operation plan including a running time of the cooling storage; the cooling storage and the cooling storage management device Each of the cooling equipment management apparatuses includes a history holding unit that holds the history, and the cooling equipment stores the history from the cold storage management apparatus via the communication device.

According to the present invention, it is possible to accurately estimate the coolable time in consideration of the ambient temperature.

1, 1A, 1B‧‧‧ cold storage management system

10‧‧‧ Coolant

11‧‧‧ cabinet

12‧‧‧ Temperature Sensor

20a‧‧‧Identification Marking Department

20b‧‧‧Cune Temperature Detection Department

20c‧‧‧Cune Temperature Control Department

20d‧‧‧Display Department

20e, 20e ' ‧ ‧ cold storage capacity calculation department

20f, 20f ' ‧ ‧ ‧ estimated cooling capacity calculation unit

20g‧‧‧Hot load rating determination department

20h‧‧‧External temperature history keeping department

20i‧‧‧ outside temperature acquisition unit (temperature acquisition unit)

20j‧‧ Notice to the Ministry of Control

20k‧‧ Notification Department

20 l ‧‧‧Transportation Department

20m‧‧‧ receiving department

20n‧‧‧External Air Temperature Mode Judgment Department

20p‧‧‧Location information detection device

30a‧‧‧Operation Plan Maintenance Department

30b‧‧‧ Cool Storage Department

30c‧‧‧Breakfast Storage Department

30d‧‧‧Transportation Department

30e‧‧‧Receiving Department

30f‧‧‧Display Department

40‧‧‧Air blower

41‧‧‧ cold airways

50‧‧‧Cune

50a‧‧‧Storage room

50b‧‧‧ cold storage room

60‧‧‧floor

70‧‧‧Cooling device

71‧‧‧Evaporator

72‧‧‧Compressor

73‧‧‧Condenser

74‧‧‧Expansion valve

100, 100A, 100B‧‧ ‧ cold storage

100a‧‧‧shell

100b‧‧‧

100c‧‧‧Mobile casters

200‧‧‧Transportation tools

300, 300A‧‧‧ cold storage management device

A1 to A3, B1 to B7‧‧‧ steps

J‧‧‧ Cool storage

The threshold of J0‧‧‧ Cooling allowance J

△J(D)‧‧‧ consumes cold heat

D, D1 to D4‧‧ ‧ time limit (time zone)

L‧‧‧heat load rating

M‧‧‧ outside temperature mode

P‧‧‧ Coolable time (cooling capacity)

Pe‧‧‧ Presumed cold storage time (estimated cooling capacity)

S‧‧‧ period

T0‧‧‧ reference temperature

Tav‧‧ average outside temperature (average temperature)

Tmax‧‧‧max outside temperature (maximum temperature)

TM‧‧‧ moments

TMs‧‧‧ Start of operation

Fig. 1 is a schematic view showing the outline of a cooling equipment management system and a cooling equipment according to each embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view showing the configuration of a cooling equipment according to each embodiment of the present invention.

Fig. 3 is a functional block diagram of a cooling equipment management system according to a first embodiment of the present invention.

Fig. 4 is a view for explaining a method of setting a reference temperature according to the first embodiment of the present invention.

Fig. 5 is a view for explaining a method of calculating the cold storage time according to the first embodiment of the present invention.

Fig. 6 is a flow chart showing an example of an operation flow of the cooling equipment according to the first embodiment of the present invention.

Fig. 7 is a flow chart showing an example of a flow of calculating the cold storage time according to the first embodiment of the present invention.

Figure 8 is a functional block diagram of a cold storage management system according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The following embodiments are merely illustrative, and there is no intention to exclude various modifications and techniques that are not explicitly described in the following embodiments. The configuration of each embodiment can be implemented without departing from the spirit and scope of the invention. Further, the configurations of the respective embodiments can be selected as needed or can be combined as appropriate.

Further, the so-called cold retention capability in the present invention includes a cold retention ability (for example, an estimated cold storage time) estimated by estimating the amount of stored heat at the time of precooling.

[1. Common configuration of each embodiment]

Hereinafter, a configuration common to each embodiment of the present invention will be described with reference to FIGS. 1 and 2 .

Fig. 1 is a schematic view showing the outline of a cooling equipment management system and a cooling equipment according to each embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view showing the configuration of a cooling equipment according to each embodiment of the present invention. Further, the cooling device 70 is represented by a refrigerant system diagram.

[1-1. Outline of the cold storage management system]

As shown in Fig. 1, the cooling equipment management system 1 includes a plurality of cooling equipment 100 and a cooling equipment management device 300. The cooling equipment management device 300 wirelessly communicates with a plurality of cooling equipment banks 100, and manages the cooling capacity of the plurality of cooling equipment 100.

The cooling equipment 100 can store articles in the interior (hereinafter referred to as "inside") and has a cool storage body (not shown in the first drawing) in the storage, and can maintain the temperature in the storage by the cold heat accumulated in the cold storage body. In low temperature containers. The cold storage 100 is used, for example, to store a low-temperature product (hereinafter also referred to as an "item") such as a required refrigerator and a frozen product to be delivered at a low temperature, and to carry it. The cold storage 100 is stored in a storage facility at a delivery point, and then mixed with a normal temperature product, such as a transportation vehicle 200 such as a truck, and transported to a delivery destination.

[1-2. Composition of cold storage library]

As shown in Fig. 1, the cooling equipment 100 has a casing 100a; the door 100b is attached to the front surface of the casing 100a so as to be openable and closable; and the moving caster 100c is attached to the lower surface of the casing 100a.

In addition, the outer surface of the cooling equipment 100 includes a display unit 20d that displays the cold storage time P (cooling capacity), and an outside air temperature acquisition unit 20i that acquires the outside air temperature around the cold storage 100 (hereinafter also referred to as "around" temperature"). The outside air temperature acquisition unit 20i is, for example, a temperature sensor that detects an outside air temperature.

As shown in Fig. 2, the interior 50 of the cooling equipment 100 is partitioned between the upper storage compartment 50a and the lower cold storage compartment 50b by the bottom plate 60. The storage compartment 50a is a space for accommodating articles, and the cold storage compartment 50b is a space for arranging the cool storage body 10 or the like which cools the storage compartment 50a.

A gap is formed between the front end of the bottom plate 60 (the right end of the bottom plate 60 in Fig. 2) and the inner side surface of the casing 100a, and the storage chamber 50a and the cold storage chamber 50b communicate with each other through the gap.

Inside the cold storage chamber 50b, a plurality of the casings 11 for accommodating the cool storage body 10 are arranged in a direction orthogonal to the paper surface of Fig. 2 so as to be spaced apart from each other with a gap therebetween. The cold storage body 10 is formed, for example, by sealing a cold storage material such as a mixture of sodium chloride and water or a mixture of a super absorbent polymer and water in a film, a resin container or the like. The cold accumulating body 10 can be solidified by cooling a liquid or gel-like cold accumulating material in advance to accumulate cold heat.

The cooling device 70 is used to store the cold heat for the cold storage body 10 before the cold storage of the articles in the storage compartment 50a, and is normally stopped during the period in which the articles are kept in the storage compartment 50a.

The cooling device 70 includes an evaporator 71, a compressor 72, a condenser 73, and an expansion valve 74. The evaporator 71, the compressor 72, the condenser 73, and the expansion valve 74 are connected in a ring shape by piping so that the refrigerant passes in the above-described order. The evaporator 71 is disposed in the cold storage chamber 50b. When the cooling device 70 is operated, the air flowing through the evaporator 71 and the air in the cold storage chamber 50b exchange heat, thereby cooling the air in the cold storage chamber 50b. As a result, as described above, the cool storage material is solidified and the cold storage body 10 accumulates cold heat.

On one side of the casing 100a, a blower 40 is provided in the vicinity of the top surface, and a cold air passage 41 extending vertically is provided. The cold air passage 41 connects the cold storage chamber 50b to the space behind the blower 40 (the left side of the blower 40 in Fig. 2).

The arrow in Fig. 2 indicates the direction in which the air generated by the operation of the blower 40 flows. That is, the circulation of the air circulated in the order of the blower 40, the storage compartment 50a, the cold storage compartment 50b, and the cold air passage 41 is formed by the operation of the blower 40. In detail, when the blower 40 is actuated, the air inside the regenerator 50b flows through the gap between the tanks 11 (the cool storage bodies 10) and is cooled by the cool storage body 10, and then guided to the rear of the blower 40 through the inside of the cold air passages 41. Then, the blower 40 blows out to the storage compartment 50a. Thereby, the articles stored in the storage compartment 50a are kept cold. The air in the storage chamber 50a flows back to the cold storage chamber 50b via the gap between the front end of the bottom plate 60 and the casing 100a.

Here, the casing 100a of the cooling equipment 100 is provided with a display unit 20d that displays the cold storage time P as described above. The display unit 20d is not limited to the arrangement portions of the first and second figures, as long as it is disposed on the outer peripheral surface of the casing 100a.

The so-called coldable time P means the time during which the storage compartment 50a can be held in a predetermined temperature zone. In other words, the insufficiency cooling time P is the total amount of the cold storage amount of each of the cool storage bodies 10, and the remaining time when the cold storage margin J is long enough to fall below the threshold value J0.

The cold storage remaining amount J is estimated based on the detection result of the temperature sensor 12 provided in the vicinity of the cool storage body 10 in the cold storage chamber 50b, and the cold storage time P is estimated based on the cold storage remaining amount J. The method of calculating the cold storage remaining amount J and the cold storage time P will be described later.

The temperature sensor 12 detects the surface temperature of at least one of the cases 11, the surface temperature of the cool storage body 10 in at least one of the cases 11, or the temperature inside the at least one of the heat storage bodies 10 in the casing 11. Further, the temperature sensor 12 is disposed at a plurality of measurement portions arranged in the air flow direction around the casing 11, and detects a corresponding temperature. In the following embodiments, the temperature sensor 12 is designed to detect the surface temperature of the cool storage body 10 in one of the casings 11.

[2. First embodiment]

Hereinafter, the first embodiment of the present invention will be described with reference to Figs. 3 to 7 .

Fig. 3 is a functional block diagram of a cooling equipment management system according to a first embodiment of the present invention.

Fig. 4 is a view for explaining a method of setting a reference temperature according to the first embodiment of the present invention.

Fig. 5 is a view for explaining a method of calculating the cold storage time according to the first embodiment of the present invention.

Fig. 6 is a flow chart showing an example of an operation flow of the cooling equipment according to the first embodiment of the present invention.

Fig. 7 is a flow chart showing an example of a flow of calculating the cold storage time according to the first embodiment of the present invention.

The cooling equipment 100 and the cooling equipment management apparatus 300 of the present embodiment are each constituted by a cooling equipment 100A and a cooling equipment management apparatus 300A shown in Fig. 3 . In addition, the cooling equipment management system 1 of the present embodiment is composed of a cooling equipment management system 1A including a plurality of cooling equipment 100A (only one cooling storage 100A is shown in FIG. 3 for simplicity) and a cooling equipment management device 300A. .

In the following, each configuration of the cooling equipment 100A and the cooling equipment management device 300A will be mainly described focusing on the configuration of the control.

[2-1. Composition of cold storage library]

The cooling equipment 100A includes an identification mark holding unit 20a, an internal temperature detecting unit 20b, an internal temperature control unit 20c, a display unit 20d, a cooling capacity calculation unit 20e, an estimated cold storage capacity calculation unit 20f, a heat load level determination unit 20g, and The outside air temperature history holding unit 20h, the outside air temperature acquisition unit 20i (temperature acquisition unit), the notification control unit 20j, the notification unit 20k, the transmission unit 20 l , and the reception unit 20 m. Further, the transmitting unit 20 l and the receiving unit 20m constitute the communication device of the present invention.

The identification mark holding unit 20a stores identification information of the cooling storage 100A, and is composed of a memory medium such as a ROM (Read Only Memory), a hard disk, a flash memory, a floppy disk, and a magneto-optical disk.

The internal temperature detecting unit 20b is constituted by a temperature sensor that measures the temperature inside the library. The internal temperature detecting unit 20b outputs information indicating the measured internal temperature (hereinafter simply referred to as "in-compartment temperature") to the internal temperature control unit 20c.

The internal temperature control unit 20c outputs the internal temperature and temperature band to the display unit 20d and the like. Here, the temperature zone refers to a temperature range in which the cooling equipment 100A is kept cold, and examples thereof include freezing, refrigeration, and low-temperature preservation. These temperature bands are set in advance in the cooling equipment 100A or are set by the user.

The display unit 20d is provided on the outer surface of the cooling equipment 100A so that the user can see it from the outside as described above. The display unit 20d displays various information such as the temperature inside the library, the temperature band, the operation plan, the information indicating that the pre-cooling is required, and the cooling capacity to be described later.

The outside air temperature acquisition unit 20i is configured to periodically obtain the outside air temperature (ambient temperature) around the cooling equipment 100A as described above, and is configured by a temperature sensor in the present embodiment. The outside air temperature information acquired by the outside air temperature acquisition unit 20i is output to the outside air temperature history holding unit 20h, which will be described later. In the present embodiment, the outside air temperature information acquired by the outside air temperature acquisition unit 20i is output to the cooling equipment management device 300A as reference information via the transmission unit 20 l , but may be omitted.

The outside air temperature history holding unit 20h associates the outside air temperature information periodically input from the outside air temperature obtaining unit 20i with the time information, and stores them in order. In other words, the outside air temperature history holding unit 20h holds the stored series of outside air temperature information as the outside air temperature history. The outside air temperature history holding unit 20h outputs the outside air temperature history information to the heat load level determining unit 20g.

The heat load level determination unit 20g estimates the maximum outside air temperature in the past predetermined period as the outside air temperature in the next transmission period based on the outside air temperature history information acquired from the outside air temperature history holding unit 20h, and sets the temperature as the reference temperature T0. Further, the heat load level determining unit 20g determines the heat load level L based on the reference temperature T0. The so-called heat load level L is a level at which the cold storage body 10 is subjected to a heat load from the outside air. In the present embodiment, the maximum outside air temperature is set to be equal to or less than the decimal point and is scaled by 1 [° C.], but is not limited thereto.

An example of a method of setting the reference temperature T0 by the thermal load level determining unit 20g will be described with reference to Fig. 4 .

The thermal load level determining unit 20g divides the back-to-back seven days (first predetermined period, 24 hours × 7) of the next transmission into time limits D1 (7:00 to 10:00) and time limit D2 (10:00 to 16: 00), time limit D3 (16:00 to 20:00), time limit D4 (20:00 to 7:00 on the following day). The heat load level determining unit 20g extracts the highest outside air temperature from the outside air temperature history information acquired from the outside air temperature history holding unit 20h for each of the time limits D1, D2, D3, and D4 in the past seven days.

The heat load level determining unit 20g then extracts the highest outside air temperature (the temperature indicated by an elliptical circle in FIG. 4) of the past seven days in each of the time limits D1, D2, D3, and D4 based on the extraction result, and sets the maximum outside air temperature to Reference temperature T0. In the example shown in Fig. 4, 18 °C is set for the time limit D1, 30 °C is set for the time limit D2, 20 °C is set for the time limit D3, and 17 °C is set for the time limit D4 as the reference temperature T0.

Further, in the present embodiment, four time limits D1, D2, D3, and D4 are set, but the number of time limits D may be any number.

The thermal load level determining unit 20g then determines the thermal load level L based on the reference temperatures T0 for each of the time limits D1, D2, D3, and D4.

The heat load level determining unit 20g sets the heat load level to six steps which are increased or decreased by 5 ° C, for example, in accordance with Table 1 below. That is, the time limit D at which the reference temperature T0 is 14 ° C or lower is set to the heat load level L1. The time limit D in which the reference temperature T0 is in the range of 15 ° C to 19 ° C is set to the heat load level L2. The time limit D of the reference temperature T0 in the range of 20 ° C to 24 ° C is set to the heat load level L3. The time limit D of the reference temperature T0 in the range of 25 ° C to 29 ° C is set to the heat load level L4. The time limit D in which the reference temperature T0 is in the range of 30 ° C to 34 ° C is set to the heat load level L5. The time limit D at which the reference temperature T0 is 35 ° C or higher is set to the heat load level L6. For example, the time limit D1 of Fig. 4 is set to the heat load level L2 with the reference temperature T0 being 18 °C.

The heat load level determining unit 20g outputs the set heat load level to the cooling capacity calculation unit 20e and the estimated cold storage capacity calculation unit 20f.

Further, the setting of the heat load level L is not limited to the setting of six steps which are increased or decreased by 5 ° C, and may be set to four steps which are increased or decreased by 10 ° C as shown in Table 2 below.

When the outside air temperature input from the outside air temperature acquisition unit 20i exceeds the reference temperature T0 after the setting of the reference temperature T0, the heat load level determination unit 20g considers that the outside air temperature may be higher than expected in the next transmission. control.

In the tracking control, the heat load level L that has been set based on the reference temperature T0 is changed to the heat load level L on the high temperature side. Regarding the changed aspect, it is possible to change only the predetermined level amount (for example, changing the level) to the high temperature side, or to change the pattern to the highest level, that is, the heat load level L6. Alternatively, it can be designed to manually switch the aspects.

In addition, when the state in which the outside air temperature is higher than the reference temperature T0 continues for a predetermined time or longer, the heat load level L may be changed to the high temperature side.

The cold storage capacity calculation unit 20e calculates the insufficiency cooling time P as the cooling capacity of the cooling equipment 100A, and outputs the cold storage time P to the display unit 20d, and when the cold storage time transmission instruction is received from the cooling equipment management device 300. The cold storage management device 300.

The cooling capacity calculation unit 20e calculates the cold storage time P based on the heat load level L set by the heat load level determination unit 20g.

Specifically, the cooling capacity calculation unit 20e first estimates the space of the cool storage body 10 from the detection results of the plurality of temperature sensors 12 (see FIG. 2) that detect the surface temperature of the cool storage body 10 (see FIG. 2). Temperature distribution. The cooling capacity calculation unit 20e calculates the current cold storage remaining amount J based on the temperature distribution and the ratio of the portion of the cold storage body 10 that exceeds the predetermined temperature.

The remaining cooling capacity J can be expressed as the number of cooling cooling joules, the percentage of cold storage remaining amount, and the number of cold storage bodies 10 that can be kept cold below a predetermined temperature. The number of joules of the cold storage capacity is expressed by the number of joules, and the remaining cooling capacity J is a state in which the cold storage volume 10 is completely frozen/solidified, that is, the cold storage allowance J after the complete cold storage is The ratio of the remaining cooling capacity J at 100%. Hereinafter, the remaining cooling capacity J is the number of joules of the remaining cooling capacity.

Further, the cooling capacity calculation unit 20e calculates the cold storage time P based on the cold storage remaining amount J. This calculation method will be described with reference to Fig. 5 .

The cooling capacity calculation unit 20e is cold heat (hereinafter referred to as "consumption cold heat") ΔJ(D) that is consumed from the cold storage body 10 for a certain period of time (here, one hour) in each time limit D. According to the following formula (1), the reference consumption cold heat ΔJ (35 fix) and the multiplication rate K (D) are used.

△J(D)=△J(35fix)×K(D)......(1)

Here, the reference consumption cold heat ΔJ (35 fix) refers to the consumed cold heat per unit time consumed from the cold storage body 10 when the outside air temperature is 35° C. and is stable. Further, the multiplication rate K(D) means a correction coefficient set according to the heat load level L of the time limit D. The multiplication rate K(D) is set to 1 when the outside air temperature is 35° C. or higher and the heat load level L is L6, and is in the order of L6, L5, L4, L3, L2, and L1 depending on the heat load level L (that is, As the heat load level L falls to a lower level, the lower the value is set.

The cooling capacity calculation unit 20e estimates that the cooling capacity is continued until the time cumulative value of the consumed cold heat ΔJ(D) exceeds the cooling remaining amount J before transmission, that is, the cooling remaining amount J during transmission becomes 0 (zero). The time or the remaining cooling amount J becomes a time below the threshold. Further, the cooling capacity calculation unit 20e calculates the time from the transmission start time to the time as the cold storage time P.

In the example shown in Fig. 5, the time at which the transportation means for transporting the cooling equipment 100A is started from the transmission departure place is 14 o'clock in the second half of the time limit D2. Therefore, the cold storage body 10 of the cooling equipment 100A consumes cold heat ΔJ (D2) per hour from 14:00 to 16:00 of the time limit D2, and consumes cold heat ΔJ (D3) every hour from 16:00 to 20:00 of the time limit D3. After 20 o'clock of the time limit D4, the cold heat ΔJ (D4) is consumed every hour. [Here, each calorific value is expressed by the following formula. △J(D2)=△J(35fix)×K(D2), △J(D3)=△J(35fix)×K(D3), △J(D4)=△J(35fix)×K(D4) ]. As a result, it is estimated that the cooling remaining amount J is substantially 0 (zero) at 23:00, and the cooling capacity calculating unit 20e calculates the insufficiency cooling time P for 9 hours from 14:00 to 23:00.

Further, in the present embodiment, the cold storage capacity P is used to indicate the cooling capacity, but the cold storage remaining percentage, the cooling residual joule number, and the number of coolable cold storage bodies 10 can be used.

The estimated cooling capacity calculation unit 20f receives the estimated cold storage time transmission instruction transmitted from the cooling equipment management device 300, and calculates the cold storage amount after the predetermined time has been pre-cooled from the current cooling remaining amount J, and the pre-cooling unit is used. The resulting cold storage amount is added to the cooling residual amount J, and the estimated cold storage time Pe is calculated. The calculation of the estimated cold storage time Pe by the estimated cooling capacity calculation unit 20f is the same as the calculation of the cold storage time P by the cooling capacity calculation unit 20e, except for the estimation of the heat storage amount by the pre-cooling calculation unit 20f. Description.

The estimated cold storage capacity calculation unit 20f calculates the estimated cold storage time Pe corresponding to the calculated cold storage remaining amount J, and transmits it to the cooling equipment management device 300.

As described above, the heat retention level determination unit 20g and the cooling capacity calculation unit 20e can estimate the cooling capacity (coolable time P), whereby the heat load level determination unit 20g and the cooling capacity calculation unit 20e can constitute the estimation of the present invention. unit.

In the same manner, the heat load level determining unit 20g and the estimated cold storage capacity calculating unit 20f can estimate the cooling capacity (estimated cold storage time Pe), whereby the heat load level determining unit 20g and the estimated cold storage capacity calculating unit 20f can constitute the present invention. The estimation unit of the invention.

Referring to Fig. 3 again, the notification control unit 20j outputs an operation command to the notification unit when the outside air temperature detected by the outside air temperature acquisition unit 20i continues for a predetermined time (third predetermined time) exceeds the reference temperature T0 during delivery. 20k.

The notification unit 20k notifies the user. The notification can be an audible notification or a visual notification. The notification unit 20k can be, for example, a clicker, and can communicate with the user's portable device by wireless communication, and can display and output sounds on the portable device. When the notification unit 20k receives an operation command from the notification control unit 20j, the notification unit 20k performs a notification that the outside air temperature around the cooling storage 100A is higher than expected.

Further, the notification control unit 20j can replace the notification of the voice by the notification unit 20k with the notification of the display by the display unit 20d.

The transport unit 20 l transmits the identification information of the cooling equipment 100A, the temperature zone, the internal temperature, the insufficiency cooling time P, and the estimated cold storage time Pe to the cooling equipment management device 300A.

The receiving unit 20m receives the cold storage time transmission instruction and the estimated cold storage time transmission instruction. Further, the receiving unit 20m receives the identification code of the cooling equipment 100A and the information of the operation plan.

[2-2. Structure of the cold storage management device]

As shown in Fig. 3, the cooling equipment management device 300A includes an operation plan holding unit 30a, a cooling storage unit 30b, a cooling storage unit specifying unit 30c, a display unit 30f, and a communication device. The communication device includes a transmission unit 30d and a reception unit 30e.

The operation plan holding unit 30a stores information on the operation plan of the distribution, and is composed of a memory medium such as a ROM, a hard disk, a flash memory, a floppy disk, and a magneto-optical disk. Here, the so-called operation plan refers to a plan for transporting goods, a cold storage 100A, and the like from a facility at a delivery destination to a delivery destination by means of a transportation vehicle such as a truck, and a transportation for each transportation vehicle. The tool attaches a management number.

For the information contained in the operation plan, for example, the operation plan number, the operation date (for example, the departure date and time from the delivery departure point and the arrival date and time of arrival at the delivery destination), the required cooling time, and the required number of units. . Here, the so-called operation plan number refers to an inherent management number in an operation plan of at least one day. The so-called departure date and time refers to the estimated departure time; the so-called arrival date and time refers to the expected arrival time. The so-called cooling time required refers to the cooling time required until the operation (distribution) is completed (that is, the time that must be maintained in the predetermined temperature band). The number of required units refers to the number of cold storages 100A for each temperature zone required for operation (for example, the number of cooling zones 100A for the cold zone and the number of cold storages 100A for the temperature zone) .

The cooling storage unit 30b stores, for example, an identification mark of the cooling equipment 100A, a cold storage time P, an estimated cold storage time Pe, and whether the cooling storage is pre-cooled (here, the identification mark of the cooling storage in the pre-cooling can still be performed. Various information such as allocation processing).

The cooling equipment distribution unit 30b extracts information on the operation plan in which the departure time is set in the predetermined time zone. The operation plan here is a plan for setting the departure time of the item within the range from the current time to the scheduled time. The cooling storage unit allocation unit 30b performs preliminary allocation of the cooling equipment 100A for one or a plurality of successive operation plans that are successively extracted as time passes.

Hereinafter, for the sake of clear explanation, unless otherwise stated, the preliminary allocation of the cold storage 100A in one operation plan will be described.

The cooling equipment distribution unit 30b selects the cooling equipment 100A from the plurality of cooling equipments 100A in accordance with the required cooling time of the operation plan, the required number of each temperature zone, and the presence or absence of the cooling equipment 100 in the pre-cooling.

The cooling equipment distribution unit 30b performs preliminary allocation of the cooling equipment 100A that can be used for the operation plan based on the cold storage time P and the estimated cold storage time Pe from the selected cooling equipment 100A.

When the cold storage storage unit 30b performs preliminary allocation of the cooling equipment 100A based on the estimated cold storage time Pe (that is, the cold storage time on the premise of pre-cooling), the preliminary distribution is performed as the cold storage 100A requiring pre-cooling. The meaning of the assignment is displayed on the display unit 30f of the cold storage management device 300A. In addition, the cooling equipment distribution unit 30b transmits the amount of cold storage due to pre-cooling, for example, by means of a communication device (that is, the transmission unit 30d of the cooling equipment management device 300A and the receiving unit 20m of the cooling equipment 100A). The amount of increase or the like is transmitted to the display unit 20d of the cooling equipment 100A. Thereby, the display unit 20d displays the intention of pre-cooling, the amount of increase in the amount of cold storage due to pre-cooling, and the like.

Here, the amount of increase in the amount of cold storage due to pre-cooling refers to the amount of cold storage that is increased by pre-cooling.

The cooling equipment determining unit 30c performs the allocation determination of the first cooling equipment 100A at a predetermined time earlier than the departure time and after the preliminary allocation. Here, the first cooling equipment 100A refers to the cooling equipment 100A that is initially allocated by the cold storage storage unit 30b among the plurality of cooling equipment 100A.

The cooling equipment determining unit 30c transmits the information of the operation plan to the cooling equipment 100A via the communication device. Thereby, the operation plan using the cooling equipment 100A is displayed on the display unit 20d of the cooling equipment 100A. Further, the cooling equipment identifying unit 30c outputs the information of the operation plan to the display unit 30f of the cooling equipment management device 300A. In this way, the display unit 30f displays the assigned operation plan and the cooling equipment 100A, and displays information such as the remaining cooling amount J of the cooling equipment 100A, the presence or absence of pre-cooling, and the amount of increase in the amount of cold storage due to pre-cooling.

The transport unit 30d transmits the cold storage time transmission instruction from the cooling equipment distribution unit 30b and the estimated cold storage time transmission instruction when the cold storage time calculation reference is estimated, to the cooling equipment 100A. Further, the transfer unit 30d transfers the identification mark of the cooling equipment 100A from the cooling and cooling storage unit 30c and the information of the operation plan to the cooling equipment 100A. In addition, when the estimated cold storage time calculation reference is used, it means a time before the transmission time and is a preset time.

Receiving portion 30e receives the line from the cooling equipment 100A transmits a 20 l cooling equipment 100A to the transmitting portion of the identification symbol, with temperature, interior temperature, cold time can be estimated and P cold time information Pe.

The display unit 30f displays the operation plan held in the operation plan holding unit 30a, the state of the cooling equipment 100A received by the receiving unit 30e, the status of the preliminary allocation, the status of the allocation determination, and the like for the operator to visually recognize.

When the preliminary distribution of the cooling equipment 100A is performed based on the estimated cold storage time Pe, the cold storage storage unit 30b displays information such as the result of the preliminary distribution on the display unit 30f of the cooling equipment management apparatus 300A. In addition, the cooling equipment distribution unit 30b transmits information such as the amount of increase in the amount of cold storage due to pre-cooling, which is required to be pre-cooled, to the cooling equipment 100A, for example, by the communication device. Thereby, the information is displayed on the display unit 20d of the cooling equipment 100A.

[2-3. Flowchart]

[2-3-1. Overall Action Flow]

An example of the overall operation flow of the cooling equipment 100A will be described with reference to the flowchart of Fig. 6 . In addition, this action flow is performed every time the cold storage 100 is operated.

First, the cooling equipment 100A is before the start of the cooling (before the start of the operation), and in step A1, the reference temperature T0 and the heat load level L are set for each time limit D. However, when the obtained actual outside air temperature continues to be higher than the reference temperature T0 for a predetermined time or longer, the cooling equipment 100A performs tracking control for changing the heat load level L to the high temperature side in step A2.

Next, in the cooling equipment 100A, in step A3, the cold storage time P and the estimated cold storage time Pe are calculated based on the heat load level L set in step A1 or step A2. This cold storage time P, the estimated cold storage time Pe is transmitted to the cooling equipment management device 300A, and the plan for the distribution of the cooling equipment 100A for the next operation is made.

Next, after the start of the cooling (after the start of the operation), in step A4, when the actual outside air temperature obtained continues for a predetermined period or longer than the reference temperature T0, the cooling equipment 100A performs notification.

Alternatively, the tracking control of step A2 may be performed in parallel with step A4 after the start of cooling.

[2-3-2. Calculation of coldable time]

An example of a method of calculating the cold-retainable time P for each time limit D performed by the cooling capacity calculation unit 20e will be described with reference to the flowchart of FIG.

First, in step B1, the cooling capacity calculation unit 20e calculates the current cold storage remaining amount J as the cooling remaining amount J when the operation start time TMs (time TM = TMs). Further, when the remaining cooling amount J is not the number of joules of the cooling remaining amount (for example, when the cooling remaining amount is percentage), it is converted into the cooling residual amount joules.

Next, in step B2, the consumed cold heat ΔJ(D) consumed for one hour of the cooling operation in the time limit D to which the operation start time TMs belongs is calculated, and in step B3, the cold storage remaining amount at the operation start time TMs is calculated. J subtracts the consumed cold heat ΔJ (D), and calculates the cool storage margin J after one hour has elapsed since the start of the operation.

In step B4, it is determined whether or not the cold storage remaining amount J is less than 0 (zero). If the cold storage remaining amount J is not less than 0 (zero), the process proceeds to step B7, the time TM is incremented by one hour, and then returns to step B2.

On the other hand, when it is determined in step B4 that the cool storage margin J is less than 0 (zero), the process proceeds to step B5, and the time TM is decremented by one hour. Next, the process proceeds to step B6, and when the time TM after the decrement is substantially zero (zero), the cold storage remaining amount J is calculated as the insufficiency cooling time P from the operation start time TMs to the decremented time TM, and the flow ends.

In addition, in this flowchart, if the cold storage time P is less than one hour, the calculation of the cold storage time P is calculated as "-1 hour", but in this case, the cold storage time P can be performed by a step not shown. Set to 0 (zero).

[2-4. Action and effect]

According to the first embodiment of the present invention, the following effects and effects can be obtained.

(1) The higher the ambient temperature during operation, the higher the heat load level L of the cold storage 100A subjected to the heat load of the surrounding external air, and the shorter the cold storage capacity (the cold storage time P and the estimated cold storage time Pe). That is, the cooling capacity varies depending on the ambient temperature.

In the present embodiment, the cooling capacity is estimated based on the thermal load level L estimated from the reference temperature T0, based on the estimated value of the ambient temperature during operation, that is, the ambient temperature, the time zone, the time zone, and the region. If it is changed, the cold storage capacity of the cooling equipment 100A can be accurately estimated.

Further, since the cooling ability of the cooling equipment 100A can be accurately estimated, the operation plan of the cooling equipment 100A can be appropriately formulated based on the cooling capacity.

(2) The heat load level L is set by setting the reference temperature T0 based on the history of the ambient temperature in the first predetermined period until the transmission. Therefore, the estimated temperature of the ambient temperature, that is, the reference temperature can be accurately estimated based on the actual history. T0.

(3) The ambient temperature varies depending on the time zone (time limit D). However, since the heat load level L is set by setting the reference temperature T0 for each time zone, the cold storage capability can be calculated more accurately.

(4) When the ambient temperature detected by the outside air temperature acquisition unit 20i is higher than the reference temperature T0, the heat load level L is changed to the high temperature side, and the cold storage capacity is re-estimated based on the changed heat load level L. Therefore, even if it is sudden The climate change, etc., causes the ambient temperature to change rapidly, and the cold retention ability can still be accurately estimated.

(5) When the state in which the ambient temperature detected by the outside air temperature acquisition unit 20i is higher than the second threshold temperature (the reference temperature T0 in the present embodiment) continues to be longer than the third predetermined period during operation, the notification unit 20k is activated. Notify. Therefore, it is possible to alert the operator who uses the cooling equipment 100A for distribution. The worker who is reminded to pay attention can respond appropriately, for example, moving the cooling storage 100A from the outside to the inside, or in the same room, but moving to a lower temperature.

[2-5. Variations]

(1) As shown by the two-dot chain line in Fig. 3, the outside air temperature history holding unit 20h included in the cooling equipment 100A may be provided in the cooling equipment management device 300A.

At this time, the outside air temperature information acquired by the outside air temperature acquiring unit 20i of the cooling equipment 100A is output to the outside air temperature history of the cooling equipment management device 300A via the transmitting unit 20 l of the cooling equipment 100A and the receiving unit 30e of the cooling equipment management device 300A. The part is accumulated for 20 hours. In addition, the outside air temperature history information of the outside air temperature history holding unit 20h of the cooling equipment management device 300A is output to the heat load level determining unit of the cooling equipment 100A via the transmitting unit 30d of the cooling equipment management device 300A and the receiving unit 20m of the cooling equipment 100A. 20g. At this time, the outside air temperature history holding unit 20h of the cooling equipment 100A is not used.

Alternatively, when the outside air temperature history holding unit 20h is provided in the cooling equipment management device 300A, the outside air temperature history holding unit 20h of the cooling equipment 100A may be omitted. Since the outside air temperature history holding unit 20h is only required to be provided in the cooling equipment management device 300A, the cost of the cold storage management system 1A can be reduced.

(2) The cooling capacity calculation unit 20e may set the reference temperature T0 based on the history of the outside air temperature of the cooling equipment 100 during cooling, and set the heat load level L. The outside air temperature in a non-use environment in which the standby is not kept cold is a noise for the calculation of the cooling capacity, and accordingly, the setting of the heat load level L is deliberately not used for the reference temperature T0. Therefore, the cooling capacity calculation unit 20e can estimate the cooling capacity more accurately.

In addition, the cold storage capacity calculation unit 20e may refer to only the history of the outside air temperature during the operation time (cooling time) based on the operation plan acquired from the cooling equipment management device 300A, for example, only the history of the ambient temperature during the cooling.

[3. Second embodiment]

[3-1. Composition]

Hereinafter, a second embodiment of the present invention will be described with reference to Fig. 8.

Figure 8 is a functional block diagram of a cold storage management system according to a second embodiment of the present invention.

The same components as those in the first embodiment are denoted by the same reference numerals, and their description is omitted.

As shown in Fig. 8, the cooling equipment 100 and the cooling equipment management device 300 of the present embodiment are each constituted by a cooling equipment 100B and a cooling equipment management device 300A. In addition, the cooling equipment management system 1 of the present embodiment is composed of a cooling equipment management system 1B including a plurality of cooling equipment 100B (only one cooling equipment 100B is shown in FIG. 8 for simplicity) and a cooling equipment management device 300A. The configuration of the cooling equipment 100B is different from that of the first embodiment.

Compared with the cooling equipment 100A (see Fig. 3) of the first embodiment, the cooling equipment 100B differs in the following points. In other words, the cooling equipment 100B includes an outside air temperature mode determining unit 20n instead of the heat load level determining unit 20g, a cold storage capacity calculating unit 20e ' instead of the cooling capacity calculating unit 20e, and an estimated cold storage capacity calculating unit 20f ' instead of the estimated cold storage capacity. Part 20f.

The outside air temperature mode determining unit 20n has a calendar function, determines the time period S to which the delivery time belongs, and sets the outside air temperature mode M based on the determined time period S.

The cooling capacity calculation unit 20e ' and the estimated cooling capacity calculation unit 20f ' respectively acquire the outside air temperature mode M from the outside air temperature mode determination unit 20n, set the reference temperature T0 based on the outside air temperature mode M, and set the heat load level L based on the reference temperature T0. . Further, the cooling capacity calculation unit 20e ' calculates the cold storage time P based on the heat load level L, and the estimated cooling capacity calculation unit 20f ' calculates the estimated cold storage time Pe based on the heat load level L. The calculation method of the cold storage time P and the estimated cold storage time Pe by the cold storage capacity calculation unit 20e ' and the estimated cold storage capacity calculation unit 20f ' is the same as the cooling capacity calculation unit 20e and the estimated cold storage capacity calculation unit 20f of the first embodiment. Therefore, the description is omitted.

Table 3 below shows an example of setting of the outside air temperature mode M, the reference temperature T0, and the heat load level L in each period S. In this example, the period S is set in accordance with the seasons (spring, summer, autumn and winter), and thus the outside air temperature mode M is set, but is not limited thereto. In addition, the season S may be distinguished by a season different from the four seasons.

In addition, the cooling equipment 100B performs tracking control for changing the heat load level L to the high temperature side in the same manner as the cooling equipment 100A of the first embodiment (see Fig. 6), but the conditions for performing tracking control are different.

Specifically, when the one-time operation is completed, the external air temperature mode determination unit 20n acquires the history information from the outside air temperature history holding unit 20h, and obtains the period (second predetermined period) or operation management for the one-time operation. The highest outside air temperature Tmax (highest temperature) and the average outside air temperature Tav (average temperature) in one day (second predetermined period).

Next, the outside air temperature mode determining unit 20n is (condition 1) the highest outside air temperature Tmax is higher than the reference temperature T0 (Tmax>T0), and (condition 2) the average outside air temperature is higher than the "reference temperature T0-ΔT" (first side) When the two conditions of the limit temperature) [Tav>(T0-ΔT) and ΔT>0 are satisfied, the outside air temperature mode M is changed to the high temperature side, and the heat load level L is changed to the high temperature side.

In this way, the outside air temperature mode determining unit 20n and the cooling capacity calculating unit 20e ' can estimate the cooling capacity (coolable time P), and the outside air temperature mode determining unit 20n and the cooling capacity calculating unit 20e ' can constitute the present invention. Presumptive department.

In the same manner, the outside air temperature mode determining unit 20n and the estimated cold storage capacity calculating unit 20f ' can estimate the cooling capacity (estimated cold storage time Pe), and the outside air temperature mode determining unit 20n and the estimated cold storage capacity calculating unit 20f ' can be used. The estimation unit of the present invention is constructed.

The other configurations are the same as those of the first embodiment, and thus the description thereof is omitted.

[3-2. Function and effect]

According to the second embodiment of the present invention, in addition to the effects of the first embodiment, the following effects and effects can be obtained.

(1) The reference temperature T0, the heat load level L, and the like are set in accordance with the period S to which the operation is performed. Therefore, compared with the first embodiment, the reference temperature T0 and the heat load level L are set based on the history of the outside air temperature, and it is not necessary to periodically acquire the outside air temperature and accumulate in order to acquire the history.

Therefore, the configuration, control, and the like for setting the reference temperature T0 and the heat load level L can be simplified.

(2) When Condition 1 and Condition 2 are satisfied, that is, when the outside air temperature is stably higher than the reference temperature T0 or the reference temperature T0 during operation, the heat load level L is changed to the high temperature side. Therefore, even if the outside air temperature is specifically increased, the cooling capacity at the time of operation, and thus the operation plan, can still be adapted to the actual climate.

[3-3. Variations]

(1) The outside air temperature mode determining unit 20n may set the setting of the outside air temperature mode M of each period S (the setting of the reference temperature T0 and the setting of the heat load level L) according to the type of operation of the cooling equipment 100B. By.

For example, the outside air temperature mode determining unit 20n sets the outside air temperature mode M for each period S (in this example, each month) as shown in Table 4 below for the cooling equipment 100B of the operation types A, B, and C, respectively. In addition, in the following Table 4, "low temperature" means "low temperature mode", "medium temperature" means "medium temperature mode", and "high temperature" means "high temperature mode".

Here, the type A is mainly used for night transportation, the type B is mainly used for daytime transportation, and the type C is used for both night transportation and day transportation. The cooling equipment 100B for long-distance distribution is often used for night transportation, that is, the type A used for short-distance transportation, and the cold storage 100B for short-distance distribution is often used for day transportation.

The outside air temperature mode determining unit 20n may be replaced with an area of operation (use) corresponding to the cooling equipment 100B, or an area corresponding to the operation type of the cooling equipment 100B, and corresponding to the operation (use) area of the cooling equipment 100B. The setting of the outside air temperature mode M in the period S (the setting of the reference temperature T0 and the setting of the heat load level L) is set as the difference.

For example, it is conceivable that the respective cooling equipments 100B for the operation types A, B, and C are applied to the settings shown in Table 4 when operating in a warm area, and the settings shown in Table 5 below are applied when operating in a cold area. In the settings shown in Table 5 below, since it is used in a cold area, the time period in which the low temperature mode is set is larger than the setting shown in Table 4 above. In the same manner as in the above Table 4, in the following Table 5, "low temperature" means "low temperature mode", "medium temperature" means "medium temperature mode", and "high temperature" means "high temperature mode".

The application area can also be manually input to the cooling equipment 100B by the operator. Alternatively, as shown by the two-dot chain line in Fig. 8, a position information detecting device 20p (for example, a GPS (Global Positioning System)) may be provided in the cooling equipment 100B, and a position may be input from the position information detecting device 20p. The information outside air temperature mode determining unit 20n automatically sets the outside air temperature mode M based on the operation area.

Since the external air temperature mode M, the reference temperature T0, and the heat load level L can be set to correspond to the operating conditions and the operating area of the cooling equipment 100B by setting the settings as exemplified in the above Table 4 and the above Table 5, the accuracy can be further improved. The cooling capacity is well calculated.

(2) As shown by the two-dot chain line in Fig. 8, the outside air temperature history holding unit 20h and the outside air temperature pattern determining unit 20n included in the cooling equipment 100B may be provided in the cooling equipment management device 300A.

At this time, the outside air temperature information acquired by the outside air temperature acquiring unit 20i of the cooling equipment 100B is output to the outside air temperature history of the cooling equipment management device 300A via the transmitting unit 20 l of the cooling equipment 100B and the receiving unit 30e of the cooling equipment management device 300A. Holding portion 20h. In addition, the outside air temperature mode M determined by the outside air temperature mode determining unit 20n of the cooling equipment management device 300A is output to the cooling capacity of the cooling equipment 100B via the transmitting unit 30d of the cooling equipment management device 300A and the receiving unit 20m of the cooling equipment 100B. The calculation unit 20e ' and the estimated cold storage capacity calculation unit 20f ' .

At this time, the outside air temperature mode determining unit 20n of the cooling equipment management device 300A can change the outside air temperature mode M in accordance with the information that the cold storage 100B is operating in accordance with the information held by the operation plan holding unit 30a. The outside air temperature history holding unit 20h and the outside air temperature pattern determining unit 20n of the cooling equipment 100B are not used.

Alternatively, when the outside air temperature history holding unit 20h and the outside air temperature mode determining unit 20n are provided in the cooling equipment management device 300A, the outside air temperature history holding unit 20h and the outside air temperature pattern determining unit 20n of the cooling equipment 100B may be omitted. It is only necessary to provide the outside air temperature history holding unit 20h and the outside air temperature pattern determining unit 20n in the cooling equipment management device 300A, so that the cost of the cold storage management system 1B can be reduced.

(3) In the second embodiment, the cooling capacity calculation unit 20e ' and the estimated cooling capacity calculation unit 20f ' set the reference temperature T0 from the outside air temperature mode M, and set the heat load level L from the reference temperature T0. On the other hand, at least one of the cooling capacity calculation unit 20e ' and the estimated cooling capacity calculation unit 20f ' may directly set the heat load level L from the outside air temperature mode M.

[4. Others]

In each of the above-described embodiments, the cold storage management systems 1A and 1B are configured to communicate with the cooling equipment 100A and 100B to communicate with the cooling equipment management device 300A. However, the cooling equipment of the present invention is not limited to use in the cold storage management system.

In other words, the cooling equipments 100A and 100B have a function of estimating the cooling capacity, and can be used as a single unit without being in communication with the cooling equipment management device 300A. When the cooling equipments 100A and 100B are not in communication with the cooling equipment management apparatus 300A, the communication apparatus can be omitted from the cooling equipment 100A and 100B.

 (industrial use possibility)  

In the present invention, it is possible to widely utilize a cooling equipment that is cold-cooled by pre-cooling a cold storage body, and a cold storage management system that performs management of a cooling equipment according to the cold storage capacity of the cooling equipment.

Claims (11)

 A cooling storage system is a cold storage for storing articles and storing the articles, and the cooling storage system includes: a cold storage body; and an estimating unit that sets a level of heat load from the ambient temperature during the delivery of the cold storage body. That is, the heat load level, and the cold storage capacity of the aforementioned cold storage body is estimated based on the aforementioned heat load level.    The cooling equipment according to the first aspect of the invention, wherein the estimating unit sets a reference temperature as an estimated value of the ambient temperature in the distribution, and sets the heat load level from the reference temperature.    In the cooling equipment according to the second aspect of the invention, the estimation unit acquires the history of the ambient temperature in the first predetermined period until the transmission, and sets the reference temperature based on the history.    The cold storage of the third aspect of the invention, wherein the estimating unit sets the reference temperature and the heat load level according to the history.    The cold storage of the third aspect or the fourth aspect of the invention, wherein the estimating unit sets the reference temperature and the heat load level based only on the history of the cooling equipment in the cold storage.    The cold storage tank according to the first or second aspect of the invention, wherein the estimation unit includes a period determination unit that determines a period to which the delivery is to be performed, and sets the heat load level based on the period.    The cold storage tank according to claim 6, wherein the estimating unit sets the heat load level based on at least one of an operation type of the cooling equipment and a region in which the distribution is performed.    The cooling equipment according to the second aspect of the invention is characterized in that the temperature-retaining unit detects the ambient temperature, and the estimating unit sets the heat when the ambient temperature obtained by the temperature acquiring unit is higher than the reference temperature. The load level is changed to the high temperature side, and the cooling capacity is re-estimated based on the changed heat load level.    The cold storage tank according to the second aspect of the invention is characterized in that the temperature acquisition unit is configured to detect the ambient temperature, and the estimation unit is the ambient temperature obtained by the temperature acquisition unit in a second predetermined period until the delivery. The average temperature is higher than the first threshold temperature, and when the maximum temperature of the ambient temperature acquired by the temperature acquiring unit is higher than the reference temperature in the second predetermined period, the reference temperature is corrected to the high temperature side. The first threshold temperature is lower than the aforementioned reference temperature by a predetermined temperature.    The cold storage of the first aspect of the invention is characterized in that: the temperature acquisition unit is configured to detect the ambient temperature; the notification unit is to notify; and the notification control unit controls the operation of the notification unit; and the notification control unit When the period in which the ambient temperature acquired by the temperature acquisition unit is higher than the second threshold temperature exceeds the third predetermined period, the notification unit is activated.    A cold storage management system comprising: a cold storage library as described in claim 3; and a cold storage management device, which determines an operation plan including a runtime of the aforementioned cold storage; the aforementioned cold storage and the aforementioned cold storage management Each of the devices includes a communication device that can communicate with each other, and the cooling storage management device includes a history holding unit that holds the history, and the cooling storage system acquires the history from the cooling storage management device via the communication device.