JP3498239B2 - Showcase system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a showcase system installed in a store, and more particularly, to an electric power peak generated when a new product is stored in the showcase, which is caused by overcooling or overcooling the showcase. The present invention relates to power control that is suppressed by heating.

[0002]

2. Description of the Related Art FIG.
FIG. 9 is a configuration diagram of the conventional showcase system shown in FIG. 8, in which a showcase controller 1 including a personal computer is connected to the showcase 2. The showcase control device 1 is connected to the register 4 and the chain headquarters 5 in the store to build a product inventory management system (POS system).

In such a showcase system, the showcase control device 1 operates as shown in FIG. 15, for example. The sales amount data is input from the POS system, and the current storage amount in the showcase 2 is calculated. Judging from the calculated warehousing amount, if the warehousing amount is small, operate in energy saving operation mode, if it is medium, operate in normal operation mode, and if it is large, operate in quick cooling mode, and show according to the current warehousing situation. Case 2 is under temperature control operation.

[0004]

[Problems to be Solved by the Invention]

In such a conventional showcase system, when a merchandise such as a grocery item is stored, an electric power consumption peak is generated based on the stored merchandise, and when a plurality of showcases store the product in the same time zone. Generates an even larger power consumption peak. In such a situation, in the case of a real-life contract for commercial power or high-voltage power whose past power consumption peak value is the contracted power, that power peak will determine the contracted power for the next year, and the power tariff will be real. Tended to be excessive.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a showcase system that suppresses the peak of electric power used that occurs when a product is stored and evens the electric power used. And

[0007]

SUMMARY OF THE INVENTION According to the present invention, a showcase is placed in a store and the internal temperature is controlled by utilizing electric power, and the operation of the showcase is controlled so as to suppress the occurrence of power consumption peaks. And a showcase control device.

Further, the showcase control device includes a planned product storage time input means for inputting a planned product storage time,
According to the schedule determination means for determining a time zone for supercooling or overheating the inside of the showcase by the scheduled product storage time input by the scheduled product storage time input means, and according to the time zone determined by the schedule determination means. And a driving control means for controlling the driving of the showcase.

Further, the showcase control device includes a product scheduled arrival time input means for inputting a product scheduled arrival time,
Product scheduled storage time calculating means for calculating the product scheduled storage time in the showcase from the product scheduled arrival time input means input by the product scheduled arrival time input means, and the product scheduled storage time calculated by the product scheduled storage time calculation means A schedule determining means for determining a time zone for supercooling or overheating the inside of the showcase, and an operation control means for controlling the operation of the showcase in accordance with the time zone determined by the schedule determining means. Is.

Further, the showcase control device inputs a planned product storage number input means for inputting a planned product storage number in the showcase, and an error based on the product planned storage number input by the product planned storage number input means. Supercooling heating determining means for determining the degree of cooling or superheating, and the operation control means controls the operation of the showcase based on the outputs from the schedule determining means and the supercooling heating determining means. It was done like this.

Further, the showcase control device includes a power consumption peak time period input means for inputting a power consumption peak time period of the store, and the schedule determination means includes:
The time zone input by the power consumption peak time zone input means is removed, and the time zone of supercooling or overheating is determined.

Further, the showcase control device uses the power consumption data storage means for storing the relationship between the power consumption in the past and the time, and the peak power consumption time of the store from the data stored in the power consumption data storage means. A power consumption peak time period prediction unit for predicting a power consumption period, and the schedule determination unit determines a time period for supercooling or overheating by removing the time period predicted by the power consumption peak time period prediction unit. It was done like this.

Further, the showcase balances the first air passage having the regenerator material therein, the second air passage not having the regenerator material, and the amount of air flowing into the first and second air passages. An adjusting valve for adjusting, the showcase control device,
When the actual temperature in the showcase is lower than a predetermined target temperature, the adjusting valve control means is provided to control the adjusting valve so that the cool storage material stores cold.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1. 1 is a block diagram of a showcase system according to a first embodiment of the present invention. This showcase system comprises a showcase control device 1 and a showcase 2. The showcase control device 1 uses a power consumption peak time zone input means 1a for inputting a peak time zone of power consumption, a product scheduled storage time input means 1b for inputting a product scheduled storage time in the showcase 2, and a planned storage number of products. A planned product storage number input means 1c for inputting, a schedule deciding means 1d for determining a time zone (schedule) of supercooling or overheating of the showcase 2, and a supercooling heating for determining a degree (degree) of supercooling or overheating. The operation control means 1f for controlling the operation of the showcase 2 is provided based on the information from the determining means 1e, the schedule determining means 1d, and the supercooling / heating determining means 1e.

On the other hand, the showcase 2 is provided with a fan 2a for circulating the air inside the showcase, an indoor heat exchanger 2b, a thermistor 2c for detecting the temperature inside the showcase, and a front door 2d for putting in and taking out goods. The temperature inside the showcase 2 is monitored by the thermistor 2c, and is controlled by the showcase controller 1 to reach a preset target temperature. The product storage door may be provided separately from the front door 2d.

Next, the operation of the system of FIG. 1 will be described by taking the case of cooling the showcase 2 as an example. First, the scheduled storage time of the products in the showcase 2 by the planned product storage time input means 1b, the planned product storage number by the planned product storage number input means 1c, and the peak power consumption time input means 1
The peak hours of power consumption estimated by a are input respectively.

The input of the peak time of used electric power, the scheduled storage time of products, and the planned storage number of products will be described with reference to FIG. In the figure, 1g indicates a scheduled product storage time display section, 1h
Is a planned product storage number display unit, 1i is a power consumption peak start time display unit, 1j is a power consumption peak end time display unit, 1k
Is a numerical value input means for inputting a value to each of these display portions, S1
S4 are item selection switches. For example, when inputting 13:00 (13:00) as the planned product storage time, the item selection switch S1 at the left end is pressed to select the planned product storage time, and "1", "3",
Input "0" and "0". When the input is incorrect, the user inputs the correct value by pressing "c" of the numerical value input means 1k to clear the input. In the same manner, the planned number of products to be stored is 53, and the peak power hours are from 12:00 to 12:10.
Enter.

On the other hand, a temporary supercooling time which is a temporary supercooling time is set in advance in the schedule determining means 1d.
The supercooling time is a value indicating how many hours the supercooling takes, but if it is too short, it will be cooled at once and a power peak will occur during the supercooling. Therefore, the temporary supercooling time is set such that such a power peak does not occur and the power used is sufficiently leveled. Here, the temporary supercooling time is 1 hour. As described above, the schedule determining means 1d having the provisional supercooling time set has data of the planned product storage time from the planned product storage time input means 1b and the power consumption peak time zone from the power consumption peak time zone input means 1a. Further, the time zone for supercooling the showcase 2 is determined in consideration of the temporary supercooling time.

FIG. 3 is a diagram showing the operation of the schedule determining means 1d. The schedule deciding means 1d has a product scheduled storage time of 13:00 and a temporary supercooling time of 1 hour, so that the schedule deciding means 1d shows 12:00 to 13: 0 as indicated by a thin line in the figure.
0 is temporarily set as the supercooling time zone. However, the peak hours of power usage are from 12:00 to 12:10,
Since this time zone overlaps with the tentatively set time zone, the actual supercooling time zone is shortened between 12:10 and 13:00 as indicated by the bold line in the figure. However, if this time is shortened too much, the power peak occurs as described above. Therefore, when the schedule time becomes extremely short, it is necessary to shift the supercooling time zone before the peak power usage time zone. For example, when the supercooling time zone determined as described above is half or less of the temporary supercooling time (30 minutes or less in the case of the figure),
It is programmed to shift a part or all of the supercooling time before the peak power usage time.

The supercooling / heating determining means 1e obtains the cooling capacity required to cool the stored products, and calculates and determines the target temperature value in the showcase 2 required to obtain the cooling capacity. The cooling capacity φs required during the operation (scheduled operation) in the time period determined by the schedule determining means 1d is calculated by (cooling load φ1 during normal operation) + (cooling load φ2 required during product storage) To be done. Cooling load φ1 during normal operation is the amount of heat entering from the wall φ1
1, ventilation heat φ12, cooling load of goods φ1
3. Calculated as the total of the calorific value of the blower motor φ14, etc. In addition, the cooling load φ2 required when storing the product is (number of planned product storage N) × (required cooling heat φ2 per product)
1) / (supercooling time t). Furthermore, product 1
The required cooling heat φ21 per piece is calculated by (specific heat of product) × (volume of product) × (temperature difference before and after cooling). The specific heat of the product, the volume, and the temperature difference before and after cooling are set in advance. The planned product storage number N is calculated by substituting the value input by the planned product storage number input means 1c and the supercooling time t by the supercooling time determined by the schedule determining means 1d.

Next, the degree of supercooling is determined from the cooling capacity φs calculated as described above. Here, the degree of supercooling is obtained as the amount of change in the target temperature. FIG. 4 is an image diagram of determining the degree of supercooling. The horizontal axis represents the cooling capacity, and the vertical axis represents the degree of supercooling. This graph is fixed for each model of showcase. From this graph, the degree of supercooling α required to obtain the cooling capacity φs can be obtained.

The operation control means 1f controls the temperature in the showcase 2 based on the time period determined by the schedule determination means 1d and the degree of supercooling determined by the supercooling heating determination means 1e. In this example, 12:10
During 13:00, the target temperature in the showcase is changed by the supercooling degree α to operate.

As described above, by precooling or overheating the showcase before storing the products, it is possible to prevent a power peak from occurring after the products are stored.

Embodiment 2. This is a plurality of showcases 2 controlled by the showcase control device 1. For example, FIG. 5 is a configuration diagram of a system in which two showcases 2 and 3 are controlled by the showcase control device 1, and FIG. 6 is a peak power consumption period corresponding to FIG. It is an input explanatory view of a planned storage time and a planned storage number of products. In these figures, FIG.
The same reference numerals as those in FIG. 2 indicate the same or corresponding parts.

Next, the operation of the system shown in FIG. 5 will be described by taking the case of cooling the showcase 2 as an example. First, the scheduled storage time of the products in the showcase 2 by the planned product storage time input means 1b, the planned product storage number by the planned product storage number input means 1c, and the peak power consumption time input means 1
The peak hours of power consumption estimated by a are input respectively.

As shown in FIG. 6, first, the item selection switch S5 at the left end of the showcase number display portion 1l is pressed to select this item, and subsequently, by the numerical value input means 1k.
Enter "2" to specify showcase 2. After that, as in the case of the first embodiment, a numerical value is set on each display unit. Similarly, the showcase 3 is also set. Here, as summarized in FIG. 7, the product scheduled storage time and the product planned storage number of the showcase 2 are set to 14:00 and 53, respectively, and the product scheduled storage time and the product planned storage number of the showcase 3 are set. 1 for each
It is set to 4:30 and 13 pieces, and the power consumption peak time zone in this store is set to 12:00 to 12:10.

When there are a plurality of showcases in FIG.
The operation of the schedule determining means 1d is shown. If there are a plurality of showcases, the supercooling time zone (schedule) of the showcase with the latest scheduled storage time, here, the showcase 3, is determined first. Since the planned storage time of the product in Showcase 3 is 14:30 and the temporary supercooling time is 1 hour, 13:30 to 14:30 as shown by the thick line in the figure, first, the supercooling time zone of Showcase 3 To decide.

Then, the supercooling time zone of the showcase 2 is determined. The scheduled storage time for products in Showcase 2 is 14:
00, and the temporary supercooling time is 1 hour, the time from 13:00 to 14:00 is provisionally set in the supercooling time zone of the showcase 2 as indicated by the thin line in the figure. However, 13: 30-1
Since the time zone of 4:00 overlaps with the supercooling time of showcase 3 and power peaks may occur, the 30-minute schedule is moved forward as shown by the bold line in the figure, starting from 12:30.
13:30 is decided as the supercooling time zone of showcase 2.

The supercooling / heating determining means 1e determines the cooling capacity required to cool the stored products from the planned storage number of the products input for each showcase, and the showcase necessary to obtain the cooling capacity. The target temperature value within 2 is calculated. The calculation method is the same as that in the first embodiment, and therefore the description is omitted. Here, showcase 2 and showcase 3
The respective degrees of supercooling determined for the above are defined as α2 and α3.

The operation control means 1f controls the target temperature of the showcase based on the time period determined by the schedule determination means 1d and the degree of supercooling determined by the supercooling heating determination means 1e. In this example, 12: 30-1
During 3:30, the showcase 2 is operated by changing the target temperature from the target temperature by the supercooling degree α2, and between 13:30 and 14:30, by operating the showcase 3 by changing the target temperature by the warming and cooling degree α3. To do.

As described above, when there are a plurality of showcases, they are used by supercooling or overheating the showcases so that the supercooling heating time zones of the showcases do not overlap each other before the time when the products are stored. Power peaks can be avoided.

Embodiment 3. FIG. 9 is a configuration diagram of a showcase system according to Embodiment 3 of the present invention. This showcase system comprises a showcase control device 1 and a showcase 2. The showcase control device 1 uses a power consumption data storage unit 1m that detects and stores power consumption of a store where a showcase is placed, a power consumption peak time period prediction unit 1n that predicts a power consumption peak time period of a store,
The scheduled product arrival time input means 1o for inputting the scheduled arrival time of the product, and the scheduled product storage time calculation means 1p for calculating the scheduled storage time of the product in the showcase 2 from the time input by the scheduled product arrival time input means 1o. , The time zone of supercooling or overheating of the showcase 2 based on the outputs from the planned goods storage quantity input means 1c for inputting the planned goods storage quantity, the power consumption peak time zone prediction means 1n and the goods storage time prediction means 1p Supercooling heating determining means 1e, schedule determining means 1d, and supercooling heating determination which determine the degree (degree) of supercooling or overheating from the outputs of the schedule determining means 1d for determining (schedule) and the planned product storage number input means 1c. The operation control means 1f is provided for controlling the operation of the showcase 2 based on the output of the means 1e.

On the other hand, the showcase 2 has a fan 2a that circulates air inside the showcase, an indoor heat exchanger 2b, a thermistor 2c that detects the temperature inside the showcase, a storage door for storing products, and a product insertion / removal device. It has a front door 2d. The temperature inside the showcase 2 is the thermistor 2c
And the showcase control device 1 controls the temperature to reach a preset target temperature.

Next, the operation of the system shown in FIG. 9 will be described by taking the case of cooling the showcase 2 as an example. First, the planned product arrival time when the product arrives at the store is input by the planned product arrival time input means 1o, and the planned product storage number is input by the planned product storage number input means 1c.

The input of the planned arrival time of the product and the planned storage number of the product will be described with reference to FIG. In the figure, 1q is a planned product arrival display unit, 1h is a planned product storage number display unit, 1k
Is a numerical value input means for inputting each value, and S2 and S6 at the left end are item selection switches. For example, when inputting 12:45 as the planned product arrival time, the item selection switch S6 at the left end of the planned product arrival time input display section 1q is pressed to select the planned product arrival time, and the numerical value input means 1k is used. Input "1", "2", "4", "5". Similarly, the planned storage number of products is input, and here, the scheduled product arrival time is set to 12:45 and the number of product deliveries is set to 53. When the input is incorrect, the user inputs the correct value by pressing "c" on the numerical value input means 1k to clear the incorrect input.

The used power data storage means 1m detects the used power of the store with a power meter or the like, and accumulates the used power data for every fixed time. The time interval and the storage amount are arbitrarily determined by the used power peak time period prediction means 1n. Here, it is assumed that the data of the past 3 days is accumulated at 5-minute intervals.

The power consumption peak time zone predicting means 1n predicts the power consumption on the current day (today) based on the past time series data, and specifies the peak time zone. There are various known prediction methods such as a linear prediction method, a chaos method, and a neural network method, and any of them can be realized. Here, it is assumed that an approximate polynomial of past power data time series is created using a linear prediction method to predict future values. The order of the polynomial is determined by looking at the characteristics of each store. Here, a tenth-order approximation polynomial is created from the power time series data of the past three days accumulated in the used power data storage means 1m, and
It is assumed that today's power consumption data as shown in 1 is predicted.

Further, the used power peak time period prediction means 1
Based on the power consumption data for today calculated as described above and the preset peak threshold value, n specifies a peak time zone that exceeds the threshold value. This peak threshold value is a value determined by the scale and form of the store. For the following description, it is assumed that the peak time period determined here is 12:00 to 12:10.

The scheduled product storage time calculation means 1p calculates the scheduled product storage time by adding the time until the product is stored in the showcase to the scheduled product arrival time. The products delivered to the store are stored in the showcase 2 through the human hands, but the time differs depending on the store, such as the staffing. Therefore, each required time is input in advance for each store. Now, assuming that it takes 15 minutes from the arrival of the product to the storage in the showcase 2, the planned product storage time calculation means 1p considers the scheduled product arrival time of 12:45 and sets the planned product storage time at 13:00. And calculate.

On the other hand, the temporary supercooling time as described above is set in the schedule determining means 1d. Here, the temporary supercooling time is 1 hour. As described above, the schedule determining means 1d having the provisional supercooling time set has data on the planned storage time of the product from the planned storage time calculation means 1p and the peak power consumption time from the power consumption peak time prediction means 1n. And the supercooling time zone (schedule) of the showcase 2 is determined.

After that, the schedule determining means 1d,
Supercooling heating determination means 1e and operation mode control means 1
The operation of f is the same as that described in the first embodiment. However, in the first embodiment, the used power peak time zone input from the used power peak time zone input means 1a is different here in that it is determined by the used power peak time zone predicting means 1n. As described above, by precooling or overheating the showcase before storing the product based on the scheduled arrival time of the product at the store, it is possible to suppress the occurrence of a power peak after storing the product.

Fourth Embodiment FIG. 12 is a configuration diagram of a showcase system according to Embodiment 4 of the present invention. This system comprises a showcase controller 1 and a showcase 2. The showcase control device 1 uses the power consumption peak time period input means 1a for inputting the power consumption peak time period,
The scheduled storage time input means 1b for inputting the scheduled storage time for storing the product in the showcase 2, the scheduled product storage number input means 1c for inputting the scheduled storage number of the product, the time zone of overcooling or overheating of the showcase 2 The schedule deciding means 1d for deciding, the subcooling heating deciding means 1e for deciding the degree (degree) of supercooling or overheating, the operation control means 1f for controlling the operation of the showcase 2, and the adjusting valve 2i in the showcase 2 are provided. The adjusting valve control means 1r for switching is provided.

On the other hand, the showcase 2 is provided with a fan 2a for circulating the air inside the showcase, an indoor heat exchanger 2b, a thermistor 2c for detecting the temperature inside the showcase, and a front door 2d for loading and unloading products. The temperature inside is monitored by the thermistor 2c, and controlled by the showcase controller 1 so as to reach a preset target temperature. Further, the air circulation passage in the showcase 2 is provided with a normal first air passage 2g having nothing therein and a regenerator material 2f therein so that the cold temperature can be stored therein.
2h and the regulating valve 2i for passing cold air through the first air passage 2g or the second air passage 2h by switching the valve.
As the cold storage material 2f, for example, water is used when the temperature in the showcase is 0 ° C. or higher, and an inorganic salt aqueous solution is used when the temperature is 0 ° C. or lower. Other than this, paraffinic, sodium sulfate hydrate, brick, concrete and the like can be used.

In the system of FIG. 12, the operation of each means other than the adjusting valve control means 1r of the showcase control device 1,
The operation (temperature) control of the showcase 2 performed by these means is the same as that described in the first embodiment. Therefore, what is peculiar to the system of FIG. 12 is the switching control of the two air passages in the showcase 2, which is performed by the regulating valve control means 1r of the showcase control device 1.

Therefore, the operation of the regulating valve control means 1r will be described. The regulating valve control means 1r is the operation control means 1f.
From this, information on whether the operation is currently scheduled or not, the current target temperature, and the actual temperature inside the showcase 2 are acquired by the thermistor 2c. And
Based on these pieces of information, for example, the regulating valve 2i is controlled under the conditions shown in FIG.

That is, when the temperature inside the showcase 2 is higher than the target temperature during the scheduled operation, the adjusting valve 2i
Control to open the first air passage 2g, and otherwise, control valve 2i controls to open the second air passage 2h side. By doing so, of the cooling capacity φs, the cooling load φ1 in the normal operation can be used for cooling the inside of the refrigerator, and the cooling load φ2 required for storing the product can be stored in the cold storage material 2f. Immediately after the operation outside the schedule, the adjustment valve 2i is controlled to open the second air passage 2h side, the heat of the regenerator material 2f is used up first, and the temperature inside the showcase 2 becomes higher than the target temperature. The control is performed so that the first air passage 2g side is opened.

As described above, the unnecessary cold temperature is stored in the cold storage material so that the cooling power required in the future can be reduced and the power consumption can be prevented from occurring. Can be leveled. In the above example, the adjusting valve 2i was switched so as to completely open and close the two air passages, but the adjustment valves 2i are slid at the inlets of the two air passages, and their openings are set at an arbitrary ratio (for example, 70 % And 30
%) You may make it control.

The means described in each of the above embodiments may be configured by either hardware or software. In addition, in each of the above-described embodiments, the input of the planned product storage time and the planned product storage number may be input online from a distribution center or the like instead of being input at each store in which this system is installed.

[0049]

According to the first aspect of the present invention, the showcase control device can reduce the annual contracted electricity charge by suppressing the electric power peak of the electric power used for heating and cooling the showcase. There is.

[0050] In addition, since the over-cooling or over-heating the showcase until the goods storage time, to eliminate the use power peaks occurring after the commodity storage, leveling of the waste is not used power of energy is possible.

According to the invention of claim 2, a plurality of
Even if there is a showcase, the peak power consumption will occur.
You can avoid it.

Further, according to the invention of claim 3, the prediction of
Avoid peak times during which the showcase is overcooled or overheated.
By performing heating, the peak power consumption can be suppressed.

According to the invention of claim 4, the show
Install a cool storage material in the case to store more cold temperature than necessary
The power consumption during the supercooling period
Power consumption can be leveled.
It

[0054]

[0055]

[Brief description of drawings]

FIG. 1 is a configuration diagram of a showcase system according to a first embodiment.

FIG. 2 is an explanatory diagram of input of a peak power consumption period, a planned product storage time, and a planned product storage number according to the first embodiment.

FIG. 3 is an explanatory diagram of time zone determination by the schedule determination means in the first embodiment.

FIG. 4 is an explanatory diagram of determining a degree of supercooling by a supercooling heating determining unit according to the first embodiment.

FIG. 5 is a configuration diagram of a showcase system according to a second embodiment.

FIG. 6 is an explanatory diagram of input of a peak power consumption period, a planned product storage time, and a planned product storage number according to the second embodiment.

FIG. 7 is a diagram showing an example of inputting a peak power consumption period, a planned product storage time, and a planned product storage number according to the second embodiment.

FIG. 8 is an explanatory diagram of time zone determination by a schedule determination unit according to the second embodiment.

FIG. 9 is a configuration diagram of a showcase system according to a third embodiment.

FIG. 10 is a planned arrival time of goods in the third embodiment,
FIG. 8 is an explanatory diagram of input of a planned storage number of products.

FIG. 11 is an explanatory diagram of determination of a peak time zone by a used power peak time zone prediction means according to the third embodiment.

FIG. 12 is a configuration diagram of a showcase system according to a fourth embodiment.

FIG. 13 is a diagram for explaining the operation of the regulating valve control means in the fourth embodiment.

FIG. 14 is a configuration diagram of a conventional showcase system.

FIG. 15 is an operation flowchart of a conventional showcase system.

[Explanation of symbols]

1 showcase control device, 1a power consumption peak time zone input means, 1b planned product storage time input means, 1c
Product planned storage number input means, 1d schedule determination means, 1e supercooling heating determination means, 1f operation control means,
1m used power data storage means, 1n used power peak time prediction means, 1o planned product arrival time input means, 1
p Commodity scheduled storage time calculating means, 1r adjusting valve control means, 2 showcase, 2a fan, 2b heat exchanger, 2c thermistor, 2f regenerator material, 2g first air passage, 2h second air passage, 2i adjusting valve, A few showcases.

Continuation of the front page (56) References JP-A-9-145220 (JP, A) JP-A-8-178501 (JP, A) JP-A-8-235427 (JP, A) Actual Kai-Sho 57-104283 (JP , U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F25D 11/00 101

Claims (4)

(57) [Claims] 1. A showcase, which is placed in a store and whose internal temperature is controlled by utilizing electric power, and a showcase control device for controlling the operation of the showcase so as to suppress the occurrence of power consumption peaks. a showcase system, product pre the showcase controller, for inputting the commodity will housed time input means for inputting a product expected storage time to the showcase, the items expected storage number to the showcase
A fixed storage number input means and a power consumption pin for inputting the peak power consumption period of the store.
Time slot input means, preset time, and product planned storage time input means
Scheduled storage time of products from the above and the peak hours of power consumption
From the peak hours from the input means, the showcase
The time and the time period for supercooling or overheating the inside,
At the peak time before the scheduled storage time of the product and at the peak time
Schedule determination means for removing the intervening zone, and planned product storage input by the planned product storage number input means
The number and the time determined by the schedule determining means.
Undercooling heating decision to determine the degree of overcooling or overheating based on
Determining means , the schedule determining means and the supercooling heating determining means
The operation of the showcase is controlled based on the output from the stage.
A showcase system comprising: a driving control means for controlling . 2. A plurality of the showcases are provided, and the schedule determining means supercools each showcase.
Supercool each showcase to avoid overlapping heating time zones
Alternatively, the contract is characterized by determining the time period of overheating.
The showcase system according to claim 1 . 3. The showcase control device according to the past
Power data that stores the relationship between power consumption and time
And a storage means and the power consumption data storage means.
Predict peak hours of electricity consumption at the store from data
Power consumption peak time zone prediction means, and the schedule determination means, the power consumption peak time
Remove the time zone predicted by the zone forecasting means,
Determines the time zone of overheating.
Showcase system according to 1 or 2 . 4. The showcase has a cool storage material inside.
A first air passage, a second air passage having no regenerator material, and
Adjustment for adjusting the balance of the amount of air flowing into the first and second air passages
The showcase control device, and
When the hot temperature is lower than a predetermined target temperature, the regenerator material is
A control valve control hand that controls the control valve to store cold in the
4. Any one of claims 1 to 3, characterized in that it comprises a step.
Showcase system described there .