JPH02251041A - Control device for air conditioner - Google Patents

Abstract

PURPOSE:To reduce an air conditioning load at a peak and to suppress consumption of energy by a method wherein a preheat temperature is set to a value lower than an air conditioning temperature, and a function to switch a non-air conditioning state to an air conditioning state through an intermediate state is provided. CONSTITUTION:A control device 2 for an air conditioner comprises a temperature detector 3 to detect a room temperature, a temperature setter 4 to set on air conditioning temperature, a reservation setter 5 to set the rise operation starting time of an air conditioner, a rise temperature deciding means 6 to decide a temperature set value during the starting of rise operation of the air conditioner based on a signal from a temperature setter 4, and an air conditioning operation starting switch 7 to start air conditioning operation of temperature set by the temperature setter. In this constitution, when a rise operation starting time is set by a reservation setter 5 and an air conditioning temperature is set by the temperature setter 4, since operation is effected at a rise temperature lower than an air conditioning temperature until the air conditioning operation starting switch 7 is pressed, a time in which an air conditioning temperature is adjusted to a set value is equal to that of a conventional device but a small capacity air conditioner can be realized, resulting in saving of energy.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is an air conditioner control system that reduces peak air conditioning loads and realizes energy savings by optimally controlling small-capacity air conditioners in residences, etc. It is related to the device.

BACKGROUND OF THE INVENTION Conventionally, air conditioning in homes has been controlled using an intermittent air conditioning system in which air conditioners are operated only during necessary times.

Therefore, it is necessary to reach the set temperature in a short time after the start of operation. However, immediately after air conditioning starts, it is necessary to handle the heat storage load of the building, which requires a larger heat source capacity than the capacity required in a steady state to compensate for the heat loss from the building. Inverters have been developed for this temporary increase in heat source capacity. However, even if the inverter operates at the maximum frequency, it is inevitable that it will take time to reach the set temperature.

Page 3 Therefore, in order to reach the set temperature at a predetermined time, there is a preheating method that processes the heat storage load in stages by starting operation several hours before the air conditioning start time, and the air conditioning time period is fixed. It was commonly used in buildings. In recent years, homes have also been equipped with a reservation timer setting function to preheat the temperature and reach the set temperature at a predetermined time.

Problems to be Solved by the Invention However, in the conventional configuration, the air conditioning start time is simply shifted by the start-up time of the air conditioner.
This has not led to a reduction in peak air conditioning loads. Therefore, the device must be operated for a longer period of time for preheating, which requires additional energy.

In order to solve the above problems, the present invention sets the preheating temperature lower than the air conditioning temperature and provides a function to reach the air conditioning state from the non-air conditioning state through an intermediate stage, thereby increasing the peak air conditioning load. The purpose is to provide an air conditioner control device that can reduce energy consumption and reduce energy consumption.

Means for Solving the Problems In order to achieve the above object, the air conditioner control device of the present invention includes a temperature detector for detecting room temperature, a temperature setting device for setting the air conditioning temperature, and an air conditioner stand. a reservation setting device for setting a startup start time; a startup temperature determining means for determining a temperature setting value at the start of startup operation of the air conditioner based on a signal from the temperature setting device; This configuration includes an air conditioning operation start switch that starts air conditioning operation at the specified temperature.

According to the above-described configuration, the present invention sets the startup operation start time of the air conditioner with the reservation setting device, sets the air conditioning temperature with the temperature setting device, and uses the startup temperature determination means based on the set air conditioning temperature. determines the temperature setting value at the start of startup operation of the air conditioner, and starts air conditioning operation at the temperature set by the temperature setting device in response to a signal from the air conditioning operation start switch, and until that point, the air conditioning humidity is It is possible to reduce energy consumption by operating at a lower temperature (higher in the case of air conditioning).

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings regarding heating.

FIG. 1 is a block diagram showing an embodiment of the present invention.
1 is an indoor unit of the air conditioner, and 2 is a control device for the air conditioner. The air conditioning mechanical control device 2 includes a temperature detector 3 that detects the room temperature, a temperature setting device 4 that sets the air conditioning temperature,
a reservation setting device 5 for setting the start time of the air conditioner, and a start-up temperature determining means 6 for determining the temperature setting value at the start of the start-up operation of the air conditioner based on the signal from the temperature setting device 4; and an air conditioning operation start switch 7 that starts air conditioning operation at the temperature set by the temperature setting device.

Next, the operation of the air conditioner control device configured as described above will be explained using the flowchart shown in FIG. Set the startup operation start time of the air conditioner using the reservation setting device 5,
Set the air conditioning temperature 6 degrees using the temperature setting device 4. Let this temperature be T'C. Below, the second
It operates according to the steps in the flowchart shown in the figure.

In step 101, the system waits until the startup start time. When the startup operation start time arrives, the process proceeds to step 102 and the startup operation is started.

In step 103, the temperature T″C set by the temperature setting device 4
The start-up temperature is determined by the start-up temperature determination means 6 from (T-4
)" C. In step 104, the temperature detector/device 3 checks whether the startup temperature has been reached. If the startup temperature has not been reached, startup operation is continued. Here, the room temperature reaches (T-4).
' If C has been reached, the process advances to step 105. In step 105, it is checked whether the air conditioning operation start switch 7 was pressed or not. If the air conditioning operation start switch 7 has not been pressed, the process proceeds to step 106; if it has been pressed, the process proceeds to step 107. In step 106, startup temperature maintenance operation is performed, and the process returns to step 105.
This continues until the air conditioning operation start switch 7 is pressed. In step 107, page 7 room temperature raising operation is performed until the air conditioning temperature set by the temperature setting device 4 is reached, and when the temperature is reached, normal air conditioning operation is started to maintain that temperature (step 103).
).

Figure 4 shows the results of evaluating the above operations for houses in the Tokyo area, and Figure 3 shows the air conditioning schedule at that time.
As shown in the figure. As shown in Figure 3, the air conditioning temperature during the heating period is 24.5°C, and in Figure 3(a), the minimum guaranteed temperature (base temperature) is set at 14.5°C 1 hour before the heating period. Increase room temperature, start-up temperature to 20.5°
In Fig. 3(b) and (c), as a comparison target, in Fig. 3(b), as simple intermittent air conditioning, only the heating period is set to 24°C. In C), as so-called timer reservation air conditioning, the period corresponding to the start-up temperature in FIG. 8(a) was set to 24.5°C, which is equal to the air conditioning temperature.

FIGS. 4(a), (b), and (C) show the changes in room temperature.

However, the capacity of the air conditioner is as shown in Fig. 4(b)>Fig. 4(C)>Fig. 4(a) due to the peak load relationship.

As shown in FIG. 4, the time required to reach the air conditioning temperature is approximately the same.

In addition, Tables 1, 2, and 3 show the respective peak loads, period loads, and period power consumption. In the case of Table 1, the peak load is 71% compared to Table 2 and 60% compared to Table 3.
This shows that heating can be done with a small-capacity air conditioner. Regarding the period load, Table 1 increases by 5% and 9% compared to Table 22 and Table 3. However, Table 1
In this example, since a small-capacity air conditioner is used, the periodic power consumption is 77% and 57% compared to Table 22 and Table 3, which shows that significant energy savings can be achieved.

Table 1 Table 2 on page 9 According to the configuration of the above embodiment, if the startup operation start time is set using the reservation setting device 5 and the air conditioning temperature is set using the temperature setting device 4, it is possible to set the start time when it is actually required. Until the air conditioning operation start switch 7 is pressed, the operation is performed at a startup temperature lower than the air conditioning temperature. Since it can be realized by a machine, it can save energy. In addition, here, the start-up temperature is based on the air conditioning temperature.
Although it is set to be 4°C lower, it can be changed by about 2 to 6°C within 10 minutes of reaching the air conditioning temperature by 10 Boehmies. Further, the start-up operation start time may be determined based not only on a clock but also on predictive data that requires air conditioning or a schedule.

In addition, when starting air conditioning operation after detecting a human body, it takes time to reach the air conditioning temperature with only intermittent operation, but in this example, the temperature rises to the startup temperature, so it takes a short time to reach the air conditioning temperature. It can be reached by

Furthermore, when determining the start-up temperature from a signal that detects the outside air temperature and a signal of the set air conditioning temperature, the height may be determined in consideration of the time it takes to reach the air conditioning temperature.

Further, although heating has been explained in the above embodiment, the same can be said about cooling.

More than the effects of the invention, as is clear from the examples, the present invention sets the startup operation start time of the air conditioner using the reservation setting device, sets the air conditioning temperature using the temperature setting device, and sets the set air conditioning temperature. Based on the start-up temperature determination method, step 11 determines the temperature setting value at the start of startup operation of the air conditioner, and the signal from the air-conditioning operation start switch starts air-conditioning operation at the temperature set by the temperature setting device. Since the system is configured to operate at a temperature lower than the air conditioning temperature (higher in the case of cooling) until that point, it is possible to reduce the peak air conditioning load and, therefore, to reduce the peak air conditioning load. This allows air conditioning to be achieved in the same time as conventional air conditioning systems, resulting in energy savings.

Furthermore, even if you do not use the air conditioning as planned, the amount of energy wasted can be reduced compared to conventional reservation timer settings.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG.
The figure is a flowchart showing the operation of the same embodiment, FIG. 3 is a timing chart showing the air conditioning schedule of the same embodiment,
FIG. 4 is a graph showing changes in room temperature according to the same example. 2...Air conditioner control device, 3...
Temperature detector, 4...Temperature setting device, 5...
・Reservation setting device, 6...Start-up temperature determination means, 7...
...Air conditioning start switch.

Claims (3)

[Claims] (1) A temperature detector that detects the room temperature, a temperature setting device that sets the air conditioning temperature, a reservation setting device that sets the startup operation start time of the air conditioner, and an air conditioner based on the signal from the temperature setting device. It is characterized by comprising a start-up temperature determination means for determining a temperature set value at the start of start-up operation of the conditioner, and an air-conditioning operation start switch that starts air-conditioning operation at the temperature set by the temperature setting device. Control device for air conditioners. (2) Air conditioning operation at the temperature set with the temperature setting device,
The control device for an air conditioner according to claim 1, which is configured to start based on a signal from a human body detection means for detecting a person returning home or entering a room. (3) Start-up temperature determining means that determines the temperature setting value at the start of startup operation of the air conditioner based on signals from an outside temperature detector that detects the outside temperature and a temperature setting device that sets the air conditioning temperature. A control device for an air conditioner according to claim 1.