JPH0618137A - Method for controlling operation of freezing and refrigerator show case - Google Patents

Abstract

PURPOSE:To enable monitoring of non-cooling of all show cases and stopping of non-cooling to be concentrically carried out even in the case that a plurality of freezing and refrigerator show cases are mounted and operating conditions of these show cases are different from each other, to improve workability of operation and to simplify an electrical wiring for the operation. CONSTITUTION:Operation control devices 10a, 10b... are arranged for every show case. A concentrated control device 6 which is connected to the operation control devices 10a, 10b... is mounted in a machine room. To the concentrated control device 6 are connected a group setting device 1 for dividing show cases having the same operating condition from each other for every group, a mode setting device 2 for setting an operating mode of each of the show cases and a timer device 3 for counting an operation starting and a stopping time for every group. The operation is started or stopped at the time set under an operation mode set in accordance with the outputs from the concentrated control device 6 to the operation control devices 10a, 10b... of each of the show cases.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the operation of a plurality of refrigerating and refrigerating showcases.

[0002]

2. Description of the Related Art As is well known, a refrigerating and refrigerating showcase is provided with a refrigerating device composed of a compressor, a condenser, a cooler, etc., and cool air cooled by the cooler keeps a constant temperature in a product storage. However, when the store is closed at night, an open-type showcase with an opening for loading and unloading products in the front is closed with a night cover to prevent outside air from entering the product storage. ing.

On the other hand, the closed type showcase having a door at the opening for taking in and taking out products does not open and close the door when the store is closed at night or the like, and the outside air does not enter the product storage. Therefore, in both types of showcases, the temperature inside the product storage does not rise significantly at night due to the invasion of outside air.

Therefore, the cooling operation of the showcase is stopped at night, and the cooling operation is started the next morning. Conventionally, a plurality of showcases are installed as a structure for performing such non-cooling and non-cooling stop. If it is open, a non-cooling switch is provided for each showcase, and this non-cooling switch is turned off for each showcase when the store is closed, and the next morning, this non-cooling switch is turned on again for each showcase to cool. Has started.

[0005]

Therefore, in order to perform non-cold and non-cold stop, it is necessary to turn the showcase one by one and turn the switch on and off for each showcase, which is troublesome. In addition, when multiple showcases are installed, the time until the temperature inside the refrigerator reaches the set value after cooling starts depends on the products to be stored and the installation conditions of the showcases. The workability was not good, because the switch had to be turned on at a different time for each showcase in anticipation of the time required for the inside of the refrigerator to reach a predetermined temperature.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example and to install a plurality of refrigerating and refrigerating showcases. It is an object of the present invention to provide an operation control method for a refrigerating and refrigerating showcase in which the management of cold and non-cold stop can be centralized and the workability can be improved, and the wiring for it can be simple.

[0007]

In order to achieve the above object, the present invention provides a centralized control in which an operation control device is provided for each of a plurality of open / close refrigeration open showcases, and the operation control device is connected to a transmission line in a machine room. A group setting device that installs a device and divides the showcases with the same operating conditions into the control circuit of the centralized control device into groups, a mode setting device that sets the operating mode of each showcase, and the operation start for each group And a timer device for counting the stop time to start and stop the operation at the time set in the operation mode set by the output from the centralized control device to the operation control device of each showcase, and to freeze a plurality of freezers. An operation control device is provided for each refrigeration open showcase, and a central control device that is connected to the operation control device by a transmission line is installed in the machine room. A group setting device that divides showcases with the same operating conditions into each group in the control circuit of the storage unit, a mode setting device that sets the operating mode of each showcase, and schedule data such as operation start and stop times for each group. The schedule data setting device to be set is connected, while the timer control device for counting the start and stop times of the showcase is connected to the control circuit of each operation control device, and the data from the schedule data setting device is connected to each device. The gist is to set the timer device for each showcase and start and stop the operation at the time set in the operation mode set by the output from the timer device.

[0008]

According to the first aspect of the present invention, the start and stop times of the operation are counted by the timer device for each showcase grouped by the group setting device, and at this time, the start and stop times of the operation are counted via the transmission line. The output from the central control unit to the operation control unit for each showcase automatically starts and stops the operation in the operation mode set for each showcase.

According to the second aspect of the present invention, in addition to the above operation, a timer device is provided on each showcase side, and the schedule data is set in the timer device by the output from the schedule data setting device on the centralized control device side. Since the start / stop of the operation is performed by the output from the timer device for each showcase, it is possible to prevent the operation control devices of all the showcases from stopping even if the central control device fails.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a control block diagram in which a first embodiment of an operation control method for a refrigerating / freezing showcase of the present invention is implemented.
In the figure, 6 is a centralized control device installed in a machine room or the like, 10a, 1
Reference numerals 0b, ... Show operation control devices provided for each of a plurality of showcases installed in the store.

The centralized control device 6 includes a control circuit 5, a group setting device 1 that divides a plurality of showcases having the same operating conditions into groups, and an operating mode of each showcase (always operating mode / Remote control mode), a mode setting device 2, a schedule timer device 3 that counts the operation start and stop times for each group, and a transmission circuit 4 that inputs and outputs to and from the showcase-side operation control devices 10a, 10b ,. The group setting device 1, the mode setting device 2, and the schedule timer device 3 are connected to the input side of the control circuit 5, and the transmission circuit 4 is connected to the output side of the control device 5.

Operation control devices 10a, 1 on the showcase side
0b, 10c, 10d, ... have the same operating condition name by the group setting device 1, for example, the operation control device 10
a, 10b belong to the group 11a, the operation control device 10c,
10d is divided into groups 11b.

Each operation control device 10a, 10b, 10c,
, 10d, ... By a control circuit 9, an address setting device 7 connected to the input side of the control circuit 9 for setting the body number of each showcase, and a transmission circuit 8 connected to the output side of the control circuit 9. Composed.

The plurality of showcase-side transmission circuits 8 and the central control device 6-side transmission circuit 4 are connected to each other through the transmission line 1.
Connect with 2.

Next, the operation will be described with reference to the flowcharts of FIGS. FIG. 2 is a flow chart of the centralized control device 6 side, and FIG. 3 is a showcase side operation control device 10a,
10b ... Flowchart 10b ... In the group setting device 1 of the centralized control device 6, the operating condition is set based on the main body number for identifying the showcase set for each showcase by the address setting device 7 of each showcase. Are divided into the same showcases [step (a)], and for the showcases determined by the control circuit 5 not to be grouped, after the group setting is performed, the transmission circuit 4
Output to the transmission circuit 8 of each showcase from the transmission line 12 to transmit to which group the showcase belongs [steps (b) and (c)].

Further, the mode setting device 2 sets the operation mode of each showcase to the constant operation mode or the remote control mode [step (d)], and the control circuit 5 judges that the mode is not set. For, regarding the showcase, the mode is set based on the body number of the showcase, and output from the transmission circuit 4 to the transmission circuit 8 of each showcase via the transmission line 12 to transmit in which mode the showcase is operated. Do [Step (e)
(F)].

Then, the schedule timer device 3 counts the operation start time of the showcases of each group, and when the operation start time comes [step (g) (h)], the control device 5 causes the transmission circuit 4 to operate. An operation command is output to the transmission circuits 8 of all the showcases via the transmission line 12 [step (i)].

Operation control devices 10a, 1 for each showcase
0b, 10c, 10d, ... Receive the transmission from the transmission circuit 4 of the centralized control device 6 in the transmission circuit 8 [step (wo)],
Whether or not this transmission is for the showcase is determined based on the body number, and if it is for the showcase, then if the received content is a mode setting command [step (wa)] The controller 9 performs a mode switching process [step (f)].

If the received content is an operation start command and the remote control mode is set [steps (yes) (ta) (re)], the operation is started [steps (tsu)]. In this way, the operation of each showcase is started from the central control device 6 by the data set in advance in the schedule timer device 3 from the central control device 6 to the operation control device 1 of each showcase.
Controlled by transmission to 0a, 10b ....

Similarly, if the control circuit 5 determines that the operation stop time has been reached by the input from the schedule timer device 3 in the centralized control device 6 [step (nu)], the control device 5 transmits the data. Circuit 4 to transmission line 1
An operation stop command is output to the transmission circuits 8 of all the showcases via 2 [step (l)].

Operation control devices 10a, 1 for each showcase
0b, 10c, 10d, ... When the transmission circuit 8 receives this operation stop command and it is judged that the operation is for the showcase, the control device 9 stops the operation [step (re) )]. In this way, the operation of each showcase is stopped by the schedule timer device 3 on the central control device 6 side.
Is controlled by transmission from the centralized control device 6 to the operation control devices 10a, 10b ...

In the first embodiment, the schedule timer device 3 is provided on the central control device 6 side, but in the second embodiment shown in FIG. 4, the schedule timer device 3 is provided in the operation control device 10a for each showcase. 10b, 10c, 10d,
.. on the central control device 6 side, each group 11a,
A schedule data setting device 13 for setting schedule data for each 11b is provided, and the schedule data setting device 13 is connected to the control circuit 5.

Then, the schedule data setting device 13
The data of the setting to the group 11a, via the transmission line 12
Operation control devices 10a, 10 of each showcase for each 11b
b, 10c, 10d, ..., and the operation control device 10a,
Data is set and stored in the schedule timer device 3 every 10b, 10c, 10d, ....

In this way, the start / stop of the operation of each showcase is controlled by the output from the schedule timer device 3 for each showcase in the same manner as in the first embodiment. Therefore,
In the case of the second embodiment, after the data is set in the schedule timer device 3 of each showcase by the schedule data setting device 13, the operation of each showcase is controlled by the output from each schedule timer device 3, Even if the central control device 6 breaks down, there is no problem in driving.

[0025]

As described above, according to the operation control method for a refrigerating / freezing showcase of the present invention, when a plurality of showcases are installed, a group setting function for each showcase and an operation mode switching function are provided. And the setting function of operation / stop is provided in the centralized control device, and each showcase is controlled from this centralized control device via the transmission line.
It is possible to save the trouble of turning around the showcases one by one and turning on / off the switch for each showcase at the start / stop time, thereby improving workability and operability.

Further, the wiring structure for that purpose is sufficient as long as the central control device and each showcase are connected by a transmission line.

[Brief description of drawings]

FIG. 1 is a control block diagram in which a first embodiment of an operation control method for a freezer-refrigerating showcase of the present invention is implemented.

FIG. 2 is a flowchart showing the operation of the centralized control device side of the first embodiment of the operation control method for a refrigerating / freezing showcase of the present invention.

FIG. 3 is a flowchart showing the operation on the operation control device side of each showcase of the first embodiment of the operation control method for a refrigerating / freezing showcase of the present invention.

FIG. 4 is a control block diagram in which the second embodiment of the operation control method for the freezer-refrigerating showcase of the present invention is implemented.

[Explanation of symbols]

 1 ... Group setting device 2 ... Mode setting device 3 ... Schedule timer device 4 ... Transmission circuit 5 ... Control circuit 6 ... Centralized control device 7 ... Address setting device 8 ... Transmission circuit 9 ... Control circuit 10a, 10b, 10c, 10d ... Operation Control device 11a, 11b ... Group 12 ... Transmission line 13 ... Schedule data setting device

[Procedure amendment]

[Submission date] July 2, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art As is well known, a refrigerating and refrigerating showcase is provided with a refrigerating device composed of a compressor, a condenser, a cooler, etc., and a cool air cooled by the cooler keeps a constant temperature in a product storage. , Used to cool and store the products in the product storage.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

By the way, when handling products such as meat and fresh fish, the meat and fresh fish are taken out of the showcase and transferred to the refrigerator when the store is closed at night. Therefore, in a showcase that handles this type of product, the cooling operation is stopped at night and the cooling operation is started the next morning.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

Conventionally, as a configuration for performing such non-cold and non-cold stop, when a plurality of showcases are installed, a non-cooling switch is provided for each showcase and each showcase is closed when the store is closed. The non-cooling switch is turned off, and the next morning, this non-cooling switch is turned on again for each showcase to start cooling.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

[0005]

Therefore, in order to perform non-cold and non-cold stop, it is necessary to turn the showcase one by one and turn the switch on and off for each showcase, which is troublesome. Also, when multiple showcases are installed, the time it takes for the temperature inside the refrigerator to reach the set value after cooling starts depends on the type of showcase and setting conditions. The workability was not good because the switch had to be turned on at a different time for each showcase in anticipation of the time required to reach the predetermined temperature.

Claims (2)

[Claims] 1. An operation control device is provided for each of a plurality of freeze-refrigerating open showcases, a central control device connected to the operation control device by a transmission line is installed in a machine room, and a control circuit of the central control device is operated. A group setting device that divides showcases having the same conditions into groups, a mode setting device that sets the operating mode of each showcase, and a timer device that counts the operation start and stop times for each group are connected, and An operation control method for a refrigerating / refrigerating showcase, characterized in that the operation is started and stopped at a time set in an operation mode set by an output from the centralized control device to the operation control device of each showcase. 2. An operation control device is provided for each of a plurality of freezer-refrigerating open showcases, a central control device connected to the operation control device by a transmission line is installed in a machine room, and a control circuit of the central control device is operated. Group setting device that divides showcases with the same conditions into groups, a mode setting device that sets the operating mode of each showcase, and a schedule data setting device that sets schedule data such as operation start and stop times for each group On the other hand, a timer device for counting the start and stop times of the showcase is connected to the control circuit of each operation control device, and the data from the schedule data setting device is connected to the timer device for each showcase. To start the operation at the time set in the operation mode set by the output from the timer device. A method of controlling operation of a refrigerating and refrigerating showcase characterized by stopping.