JPS6073232A - Demand of refrigerating and air-conditioning machine - Google Patents

Abstract

PURPOSE:To minimize the variability in indicating temperatures compared with set temperatures by a method wherein stopping command is inputted into a machine having an enough margin in temperature from a central control unit upon generating a demand signal in the demand unit in which a charge for electric power is restricted to a value lower than a given value by limiting the consuming amount of electric power for the air-conditioning machine. CONSTITUTION:The inputs of set temperature, indicating temperature and the like of respective refrigerating machines, air-conditioning machines and auxiliary machines are inputted into the central control unit 4 through an inputting unit 4a and the data thereof are memorized into a memory 4b. On the other hand, a demand signal 1A is inputted upon demanding from a demand controller 1 through an inputting unit 4c and the data thereof are memorized into the memory unit 4d. In a step 41, when the demand signal 1A is inputted into the central control unit 4, the central control unit 4 calls immediately the set temperature and the indicating temperature in the memory unit 4b through an operating unit 4e, operates the degree of margins in the temperatures of respective stores and rooms (step 42) and outputs the stopping command 4a to the machine and equipment which has the most enough margin in the temperature through an output unit 4f (step 44).

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention reduces the amount of electricity used in each refrigerator and room by limiting the amount of electricity used by refrigerators and air conditioners. This relates to demand for refrigerators and air conditioners that can maintain the temperature as close to the set temperature as possible.

[Prior art]

Conventionally, there has been a device of this type as shown in FIG.

In this FIG. 1, 1 is a demand controller, 2a
2e is a refrigerator, an air conditioner, and their auxiliary equipment, and 3 is a control line. Through this control line 3, the refrigerator, the air conditioner, and their auxiliary machines 2a to 2e are connected to the demand controller.

Next, the operation will be explained. The refrigerator, the air conditioner, and their auxiliary machines 2a to 2e freeze and air condition the inside of each refrigerator and the room based on respective set temperatures.

On the other hand, the demand controller 1 constantly monitors the amount of power used per unit time of the entire system.

Note that the order in which the refrigerator, air conditioner, and auxiliary equipment are to be stopped when the power exceeds the specified power value is registered in advance in the demand controller 1.

If fc exceeds the specified value, demand controller 1
ij: A demand signal is issued, and according to the registered order, they are stopped through the control line 3 until they reach the specified value or less, and if the condition below the specified value continues for a certain period of time, the demand signal is released and the devices are operated sequentially again. .

For example, in Fig. 1, a refrigerator, an air conditioner, and their auxiliary equipment 2a, 2b, 2c, 2d, and 2e are connected to the demand controller 1, but here the stopping order is determined by the cooling and cooling equipment, the air conditioner, and their auxiliary equipment. Auxiliary machines 2a, 2c, 2e, 2b,
2d, the demand controller 1 will control the refrigerator, air conditioner, and their auxiliary equipment 2a when the demand signal is issued.
First, issue a stop command.

In this state, monitor the power consumption, and if it exceeds the specified value, the refrigerator, air conditioner, and other auxiliary equipment 2c to 2e-2b
-2d and sequentially send stop commands.

Conversely, when the demand signal is released, the refrigerator, air conditioner, and their auxiliary machines 2d-2b-2e-2cm2a become operational in this order.

Conventionally, the demand for refrigerators and air conditioners is in the order registered in advance as described above, so even if a situation occurs where a high-ranking machine has a low temperature margin and a low-ranking machine has a high temperature margin, the stop order will be changed. cannot be changed, and there is a drawback that the difference between the indicated temperature and the set flow rate within each chamber or room tends to vary widely.

[Summary of the invention]

This invention was made in order to eliminate the above-mentioned drawbacks of the conventional technology.The central control device calculates the temperature margin of each chamber and indoor temperature by inputting the set temperature and commanded temperature in each chamber, and then outputs a demand signal. When this happens, the central controller issues a stop command to those with a high temperature margin, and proposes a demand for refrigerators and air conditioners that can minimize variations in set temperature and indication groove.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of demands for refrigerators and air conditioners according to the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram showing the configuration of one embodiment.

In FIG. 2, the same parts as in FIG. 1 will be described with the same reference numerals.

1 in FIG. 2 is a demand controller, 2a to 2e
are the refrigerator, air conditioner, and auxiliary equipment (cooling tower, cooling water, pump, etc.), 3 is the control line, and 4 is the central control unit. Note that the demand controller 1 is connected only to the central control device 4.

As is clear from comparing this Figure 2 with Figure 1,
In the figure, a central control unit 4 is newly added to the configuration of FIG. 1.

Further, FIG. 3 shows the internal configuration of the central control device 4. In this Fig. 3, a refrigerator, an air conditioner, and auxiliary equipment 2a to 2
An input section 4a and a storage section 4b which input and store inputs such as the foot temperature and instruction temperature of e.

Input s4 for receiving and storing the demand signal 1A from the demand controller 1; c-storage section 4d; and the storage contents of these storage sections 4b and 4d are operated to the controller, refrigerator, air conditioner, and auxiliary machines 2a to 2e. , an arithmetic unit 4e that gives a stop command 4A, and an output unit 4f.

Next, the demand operation of the refrigerator and air conditioner of the present invention configured as described above will be explained.

The central control device 4 monitors the operating status of each device and can issue a command to stop the operation. Two people constantly input inputs such as set temperatures and commanded temperatures for each refrigerator, air conditioner, and auxiliary machines 2a to 2c to this central control device 4 through an input section 4a, and these data are stored in a storage section 4b. .

On the other hand, one demand signal is input from the demand controller 1 through the input section 4c at the time of demand, and the data is stored in the storage section 4d.

Here, regarding the operation when a demand occurs, 70 in FIG.
-Explain using charts. In step 41,
When the central controller 4 inputs the demand (fi No. 1A),
The central control device 4 immediately calls up the set temperature and instruction temperature in the storage section 4b in the calculation section 4e, calculates the margin of temperature in each refrigerator and room (Step 42), and issues a stop command 4A to the equipment with the greatest margin. is output through the output part 4f (stesoge 44)
.

Furthermore, if the demand signal continues for one person (stesoge 43), a stop command 4A is given to the second most available device.
The same operation is repeated until one person's demand signal is released.

Next, the time of demand release will be described using the 70-chart in FIG. 5. In Figure 5, 7 steps 51, 5
At 2t, the operations are similar to steps 41 and 42 in FIG.

Next, in step 53, the demand signal for one person is canceled, and after a certain period of time has elapsed, the central controller 4 issues an operation permission command to the device with the least temperature margin (step 54).

Further, if the demand signal 1A is released for a certain period of time, the same operation is repeated for the next device with less capacity. For example, when one person issues a demand signal, depending on the calculation result, the refrigerator
Air conditioners and their auxiliary equipment 2b, 2d, 2a, 2
If one application of c and 2e has a margin of flow rate, the central control device 4 controls the refrigerator, air conditioner, and their auxiliary equipment 2b-2.
The stop command 4A is issued in the order of 2b-2d-2a-2 until the demand signal 1A is released.

On the other hand, when the demand signal is released, if there is insufficient hot water for the refrigerator, air conditioner, and their auxiliary equipment 2a, 2b, 2c, 2d, and 2e in that order, the central controller will shut down the refrigerator while the demand signal is released. , air conditioners and their auxiliary equipment 2a-
Allow operation in the order of 2b-2cm2d-2e.

In the above embodiment, the central control unit @4 and the demand controller 1 are separated, but they may be integrated.

In addition, the refrigerator, air conditioner, and auxiliary equipment 2a to 2e to be connected
There is no limit to the number of units. Furthermore, there are no restrictions on the type of control line 3, the wiring method, or the signal transmission method.

〔Effect of the invention〕

As described above, according to the demands of the refrigerator and air conditioner of the present invention, the central control device C (by taking in the installed temperature and indicated temperature in each compartment and room of the refrigerator and air conditioner, respectively By calculating the flow rate margin of B, and when a demand signal is generated, the central controller issues a stop command to the high temperature margin B, so that the width and room temperature of each refrigerator can be kept close to the set maximum limit. As a result, power consumption can be kept below a certain level.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the demand of a conventional refrigerator and air conditioner, FIG. 2 is a block diagram showing the configuration of an embodiment of the demand of a refrigerator and air conditioner of the present invention, and FIG. 3 is a block diagram of the demand of a conventional refrigerator and air conditioner. A block diagram showing the detailed configuration of the central control unit for the demands of refrigerators and air conditioners, FIG. 4 is a control flowchart when a demand signal is generated in the demands of refrigerators and air conditioners of the present invention, and FIG. FIG. 4 is a control flowchart when the demand of the air conditioner and the air conditioner is canceled. 1...Demand controller, 2FL~'lo-refrigerator, air conditioner and auxiliary equipment, 3...ili control line, 4...
・Central FTT control device Note that the same reference numerals in the drawings indicate parts corresponding to the same straddle. O lal O χ 1 4 t 4 Figure 76 □

Claims (2)

[Claims] (1) A plurality of refrigerators, air conditioners, and their auxiliary equipment are connected to a central control device, and a demand signal is input to the central control device from the demand controller, and each refrigerator, air conditioner, and each storage When the set temperature and commanded temperature for each room are input to the central control device, the central control device
Calculate the room temperature margin and when a demand signal is generated,
A stop command is issued from refrigerators, air conditioners, and their auxiliary equipment that have a temperature margin, and when the demand signal is released, an operation command is issued from refrigerators, air conditioners, and their auxiliary equipment that do not have a temperature margin. demand for refrigerators and air conditioners. (2) A demand controller for a refrigerator or an air conditioner according to claim 1, wherein the demand controller and the central control device are integrated.