JP3185389B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner that suppresses power consumption at the peak of daytime power demand.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid-Open No. Sho 62-280551, a heat storage tank is attached to an air conditioner to store cold heat using surplus electric power such as nighttime electric power. Some air conditioners can drive the compressor with low load and reduce power consumption even when air conditioning is performed at the same capacity as a normal air conditioner. In such an air conditioner,
Although the content of the invention that suppresses the power consumption of the compressor was described, the power consumption of a blower provided to improve the heat transfer characteristics of the outdoor heat exchanger (hereinafter referred to as an outdoor blower) was suppressed. Was not mentioned. Therefore,
If the outdoor blower is kept running during peak hours, the power consumption of the outdoor blower, which does not need to be operated, will be wasted, and if the operation of the outdoor blower is stopped, the control inside the control unit installed in the outdoor unit will stop. In this case, the temperature rise of the electronic components becomes severe, and there is a risk that the electronic components may be damaged.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide an air conditioner that shifts the power consumption at the peak of daytime power demand during the nighttime to an electronic component in the control unit of the outdoor unit during the peak shift. It is to suppress the power consumption of the outdoor blower without having any effect.

[0004]

In order to achieve the above-mentioned object, the present invention provides an intermittent operation of an outdoor blower during a peak shift, a lower rotation speed of the outdoor blower than during a normal operation, or a control device. Install a dedicated blower to cool the electronic components.

[0005]

In the present invention, there are three methods for solving the object. If a dedicated blower for cooling electronic components is installed, the cost increases but there is no control problem. However, the method of intermittent operation of the outdoor blower and the method of lowering the rotation speed of the outdoor blower from those in the normal operation are as follows.
It is necessary to suppress the power consumption of the outdoor blower by paying attention to the temperature rise of the electronic components in the control device. With respect to this point, an operation mode in which the temperature rise of the electronic component is the highest may be investigated by a preliminary study, and the control may be performed in such an operation mode so that the temperature rise of the electronic component does not matter. That is, in the case of the intermittent operation of the outdoor blower, the relationship between the ON time and the OFF time, and when the rotational speed is reduced, the set value of the rotational speed is devised so that the temperature rise of the electronic component does not become a problem.

[0006]

Embodiment 1 Hereinafter, an embodiment of a control system for intermittently operating an outdoor blower 7 during a power peak shift according to the present invention will be described with reference to FIGS. 1, 2, and 3. FIG. FIG. 1 shows an outdoor unit 2 and a heat storage tank 11 of the present invention. In FIG. 1, the heat storage heat exchanger 12 in the heat storage tank 11 is used as a condenser of the refrigeration cycle during the cooling period, or the heat storage heat exchanger 12 in the heat storage tank 11 is used as the evaporator of the refrigeration cycle during the heating period. When the operation is performed to reduce power consumption, it is not necessary to flow the refrigerant to the outdoor heat exchanger 6, and it is necessary to drive the outdoor blower 7 to improve the heat transfer characteristics of the outdoor heat exchanger 6. There is no. However, the temperature of the electronic component 8 in the outdoor electric component 5 rises when the compressor 1 is driven, and the outdoor blower 7
It also plays a role in cooling. Therefore, the outdoor blower 7 cannot be completely stopped. Therefore, the outdoor blower 7 is operated intermittently during the power peak shift operation as described above. This control method will be described with reference to the block circuit diagram of FIG. 2 and the flowchart of the intermittent operation of the outdoor blower 7 during the power peak shift operation in FIG. First, the relationship between the ON time and the OFF time of the outdoor blower 7 in the intermittent operation in which the temperature rise of the electronic component 8 does not become a problem in any environment during the power peak shift operation is determined by a preliminary test. Is stored in the memory 31 inside. Therefore, when the air-conditioning operation is performed during the power peak shift operation, the power consumption suppression operation of the compressor using cold storage or heat storage is started. At the same time, based on the relationship between the ON time and the OFF time stored in the memory 31, the outdoor blower 7 is intermittently operated via the output circuit 34 as judged by the CPU 32. Thereafter, when the power peak shift operation time period ends, the operation returns to the normal air conditioning operation. The above is the control method for intermittently operating the outdoor blower 7 during the power peak shift.

Embodiment 2 Next, an embodiment of a control method for driving the outdoor blower 7 at a low rotation speed during a power peak shift according to the present invention will be described with reference to FIGS. 1, 2 and 4.
Will be described with reference to a flowchart for driving at a low rotational speed. As in the first embodiment, first, during the power peak shift operation, the rotational speed of the outdoor blower 7 is determined by a preliminary test so that the temperature rise of the electronic component 8 does not become a problem in any environment. 31. When the power peak shift operation is performed during the actual air-conditioning operation, the outdoor blower 7 is driven at the rotation speed for the power peak shift stored in the memory 31, and when the power peak shift operation time period ends, the normal operation is performed. Return to air conditioning operation. The above is the control method for driving the outdoor blower 7 at a low rotation speed during the power peak shift.

Embodiment 3 Finally, an embodiment in which a dedicated blower 15 for cooling the electronic component 8 according to the present invention is installed will be described with reference to FIGS. FIGS. 5 and 6 are top views of the outdoor unit. FIG. 5 is a view showing a flow of ventilation when cooling the electronic component 8 by the normal outdoor blower 7, and FIG. 6 is a blower for cooling the electronic component. 1
5 is a diagram illustrating a flow of ventilation when cooling the electronic component 8. If the electronic component cooling blower 15 is installed as shown in FIG. 6, the electronic component 8 can be cooled even when the outdoor blower 7 is stopped during the peak power shift. At this time, the air blower room 12 and the outdoor electric component room 13 are separated by the shredder 14,
Blower 15 for cooling electronic components other than during peak power shift
When the outdoor blower 7 is driven, the electronic components 8
Need not be cooled, and all the air blown by the outdoor blower 7 can be used for improving the heat transfer characteristics of the outdoor heat exchanger 6, so that the air conditioning efficiency is improved.

[0009]

According to the present invention, in an air conditioner that shifts the power consumption at the peak of daytime power demand at night, the electronic components 8 in the control unit of the outdoor unit at the peak shift.
It is possible to suppress the power consumption of the outdoor blower 7 without impairing the air conditioner.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an outdoor unit and a heat storage tank according to the present invention.

FIG. 2 is a control block circuit diagram of the present invention.

FIG. 3 is a flowchart of an intermittent operation of an outdoor blower according to the present invention.

FIG. 4 is a flowchart for driving the outdoor blower at a low rotation speed during a power peak shift in the present invention.

FIG. 5 is a flow chart of ventilation of a conventional machine.

FIG. 6 is a flow chart of ventilation by an electronic component cooling blower according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Compressor, 2 ... Outdoor unit, 5 ... Outdoor electric goods, 6 ... Outdoor heat exchanger, 7 ... Outdoor blower, 8 ... Electronic components, 11 ... Heat storage tank, 12 ... Heat storage heat exchanger, 13 ... Outdoor Electrical equipment room, 14: Shiikiriita, 15: Blower for cooling electronic parts, 22: Fan motor for outdoor blower, 24: Fan motor for cooling electronic parts, 30: Microcomputer, 31: Memory, 32: CPU, 33: Input circuit 34, an output circuit, 35, a signal receiving unit, 37, a temperature sensor, 38, a remote controller.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 11/02 102 F25B 13/00 351

Claims (3)

(57) [Claims] Claims 1. A compressor, an outdoor electric device, an outdoor blower,
An outdoor unit having a heat storage tank having a heat exchanger for heat storage
Air conditioner that stores during nighttime cooling operation.
And operation control function of the cooling operation of the chilled heat storage heat exchanger of the heat storage tank as a condenser of the refrigeration cycle, Day
During the heating operation of the heat storage tank in the heat storage tank stored heat at night
In an air conditioner having at least one operation control function of performing a heating operation using a heat storage heat exchanger as an evaporator of a refrigeration cycle , the outdoor fan is intermittently operated during the operation control function. as the air conditioner. 2. Compressor, outdoor electric equipment, outdoor blower, inside
An outdoor unit having a heat storage tank having a heat exchanger for heat storage
Air conditioner that stores during nighttime cooling operation.
The heat storage heat exchanger in the cooled heat storage tank is
Operation control function for cooling operation as a vehicle condenser and daytime operation
During the heating operation of the heat storage tank in the heat storage tank stored heat at night
Heating operation with heat storage heat exchanger as refrigeration cycle evaporator
Air with at least one of the operation control functions
In conditioner, electricity for cooling the outdoor electric equipment
The goods cooling fan is provided, the electric component cooling blower so as to drive the or the warm <br/> when tufts operation during the cooling operation
Air conditioner. 3. A compressor, an outdoor electric device, an outdoor heat exchanger,
Outdoor blower that blows air to the outdoor heat exchanger, for internal heat storage
Air provided with an outdoor unit having a heat storage tank having a heat exchanger
This is a harmony machine that cools down during the daytime cooling operation.
The heat exchanger for heat storage in the heat storage tank
Operation control function for cooling operation as a condenser and daytime heating
During operation, for heat storage in the heat storage tank stored at night
Heating operation using a heat exchanger as an evaporator for a refrigeration cycle
Air conditioner provided with at least one of the rotation control functions
In the operation control function operation, the heat exchange for heat storage
Cooling operation without using the cooler as a condenser for the refrigeration cycle
Alternatively, the heat storage heat exchanger is used as an evaporator of a refrigeration cycle.
Air conditioner so as to reduce the rotational speed of the chamber outer feed air press from the time of the heating operation is not used to.