JPH0160740B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in an operation control device for air conditioning heat source equipment such as a heat pump.

[Prior art]

In general, the start and stop times of air conditioning heat source equipment are determined according to the start and end times of use of the room, premises, etc. to be air conditioned, and a one-week schedule is set. The operation of heat source equipment has become automatic.

However, although Saturday is a holiday, if there is a holiday in the same week, you will be required to work, or you will be required to work on a specific week, or you will be required to leave work all at the same time on a specific day of a specific week, etc. Conventionally, in such a case, the schedule must be reset each time, resulting in the disadvantage that operation of the control device becomes troublesome.

[Summary of the invention]

The purpose of the present invention is to fundamentally solve such drawbacks of the conventional technology, and by specifying the day of the week and setting the driving schedule to be changed, and instructing the execution of these operations, The present invention provides an extremely effective operation control device for heat source equipment that performs control based on an operation schedule that is set from time to time.

〔Example〕

Hereinafter, details of the present invention will be explained with reference to figures showing examples.

Figure 1 is an instrumentation diagram, in which a heat pump H/
Pumps P ₁ to P ₃ are provided to supply the pumps P ₁ to H/P ₃ , and the cold water or hot water supplied by these is further cooled during cooling by the heat pumps H/P ₁ to H/P ₃ . During heating, the water is heated further before being discharged into the heat storage tank AT. By repeating this process for a period of time depending on the required amount of heat storage, the cold or hot water in the heat storage tank AT is heated up. When the temperature reaches a predetermined value, heat is stored.

In addition, a three-way valve V ₁ is installed on the inlet side of pumps P ₁ to P ₃ .
~V ₃ is provided, heat pump H/P ₁ ~H/P ₃
Mix cold water or hot water from near the discharge ports of the heat pumps H/P ₁ to H/P ₃ to keep the temperature at the inlet side of the heat pumps H/P 1 to H/P 3 almost constant, thereby improving the operating efficiency of the heat pumps H/P ₁ to H/P ₃ . It has become a thing.

In addition, temperature sensors T ₁ to _{T 3} are installed in the heat storage tank AT.
is inserted and detects the temperature of the heat storage tank according to the heat storage amount of each part, and the heat pump H/P ₁ ~
Temperature sensors T ₄ to _{T 6} and T ₇ to _{T 9} are provided on the outlet side and inlet side of H/P ₃ , respectively, and a temperature sensor T ₁₀ for detecting outside air temperature is provided. The detected power is given to the control unit CONT, and the control unit CONT controls the heat pumps H/ _P1 to H/ _P3 , pumps _P1 to _P3 , and three-way valves _V1 to _V3 according to each detected power. It has become a thing.

That is, heat storage operation is generally performed during the discount electricity rate period at night, and a start signal is sent from the control unit CONT to the heat pumps H/P ₁ to H/P ₃ and pumps P ₁ to _{P 3} based on the timing operation. ,
The heat storage temperature is monitored according to the detection power of the temperature sensors _T1 to _T3 , and the heat storage is performed so that the temperature is within the range determined by the predetermined target value and the outside temperature detected by the temperature sensor _T10 . The operation is controlled by controlling the three-way valves V ₁ to _{V 3} according to the detection power of the temperature sensors T ₇ to T ₉ , and varying the above-mentioned mixing situation, while controlling the detection power of the temperature sensors T ₄ to T ₆ . Early prediction of changes in heat storage temperature in the heat storage tank AT based on the
When the heat storage temperature reaches a point at which the operation is to be stopped, a stop signal is sent to the heat pumps H/P ₁ to H/P ₃ and pumps P ₁ to _{P 3} to stop the heat storage operation.

However, the amount of heat stored by the heat storage tank AT is generally less than the amount of heat required for one day's worth of air conditioning, and in order to compensate for the shortage, compensatory operation is performed even outside of discounted electricity rate hours. In this case as well, the same control as described above is performed.

The cold water or hot water in the heat storage tank AT is supplied by a pump that operates according to the control of a separately installed control device.
P ₁ and P ₅ are supplied to air conditioners AC ₁ to _{AC 3} such as fan coil units via header H, and then returned to the heat storage tank AT via these and this process is repeated. There is.

Figure 2 is a block diagram of the control unit CONT, which is centered around the processor CPU, fixed memory ROM,
Variable memory RAM, keyboard KB, display DP, and interfaces I/F ₁ and I/F ₂ are arranged around the periphery and connected by a bus bar, and the processor CPU executes instructions stored in the fixed memory ROM. It accepts the detection power of each temperature sensor T ₁ to T ₁₀ via interface I/F ₁ and commands from the keyboard KB as data, and performs control operations while accessing the variable memory RAM as necessary. Make a judgment and interface I/
It is designed to be sent to each part via _F2 .

Note that necessary data is displayed on a display DP using a character display, etc., making monitoring and operation convenient.

Figure 3 is _a flowchart showing the operation status.
Enter the start and stop times using the numeric keys, etc. inside, and perform the "setting of operation schedule" to be changed. If necessary, perform the same operation n times on different days of the week, then execute the keyboard KB. If the command switch “execute command by Kp” is executed,
These data are stored in variable memory RAM.

Figure 4 shows the processor that responds to the above data.
This is a flowchart showing the control status of the CPU.
The clock circuit in the processor CPU measures the time and determines the day of the week, and if "designated day of the week?" becomes Y (YES) by comparing it with the data in the variable memory RAM, the data corresponding to "execute command by Kp" becomes variable. ``Is there an execution command?'' is determined based on whether or not it is in the memory RAM, and if the answer is Y, ``change operation control is performed according to the operation schedule of the specified day of the week'' according to the data in the variable memory RAM.

In contrast to the above, when N (NO) is selected for "Specified day of the week?" and N is selected for "Is there an execution command?", "normal operation control" is performed according to the operation schedule that is regularly stored in advance in the variable memory RAM.

Therefore, if the "execution command by Kp" is not issued, the heat pumps H/P ₁ to H/P ₃ will perform heat storage operation and compensation operation as usual, but by issuing the "execution command by Kp", the execution command switch will be activated.
Depending on the operation of Kp, on the specified day of the week,
Start and stop times are determined based on the changed operation schedule, heat storage operation and compensation operation are performed according to these times, and on a day other than the designated one, the system automatically returns to a steady state.

Therefore, with a simple operation, it is possible to change the desired operating schedule on any day of the week, and the operating state of the heat source equipment can be set economically in accordance with changes in work conditions, etc.

However, as a heat source device, heat pump H/
In addition to P ₁ to H/P ₃ , boilers, refrigerators, etc. may be used, and the configuration shown in Figure 1 can be selected arbitrarily depending on the conditions, and the control unit CONT can be a combination of various logic circuits. The same effect can be obtained even if a dedicated one is used, and various modifications can be made in FIG. 3, such as replacing the steps or omitting unnecessary steps depending on the situation.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, the operation schedule can be changed for each day of the week with a simple operation. A remarkable effect can be obtained in terms of control.

[Brief explanation of drawings]

The figure shows an embodiment of the present invention, and FIG. 1 is an instrumentation diagram;
FIG. 2 is a block diagram of the control section, FIG. 3 is a flowchart of the operating situation, and FIG. 4 is a flowchart of the control situation. AT... Heat storage tank, H/P ₁ ~ H/P ₃ ... Heat pump (heat source equipment), P ₁ - _{P 5} ... Pump, AC ₁ ~
AC ₃ ...Air conditioner, CONT...Control unit, _T1 to _T10 ...
...Temperature sensor, CPU...Processor, ROM...
Fixed memory, RAM...variable memory, KB...keyboard.

Claims (1)

[Claims] 1. In an operation control device that controls the start and stop of the heat source equipment according to the operation schedule for each day of the week that determines the start and stop times of the heat source equipment, a day-of-the-week designation controller that specifies the day of the week on which the operation schedule is to be changed; a schedule setting operation device for setting an operation schedule to be performed; an execution command switch for specifying the execution of the contents specified by the day of the week designation operation device and the contents set by the schedule setting operation device; An operation control device for a heat source device, comprising: a control section that performs control based on an operation schedule set by the schedule setting controller when the day of the week designated by the day of the week designation controller arrives.